JP5114440B2 - Subsoil improvement work machine - Google Patents

Description

  The present invention relates to a working machine for improving the subsoil of a heavy clay.

  In fields such as upland and grassland in the heavy clay zone, the subsoil layer under the soil layer is usually clay, and it is compressed by the running of a tractor etc. to form a solid bottom. Compared with other fields, soil physical properties such as air permeability, water permeability and water retention are low, and productivity of agricultural products and flowers is low. As a method for improving such a heavy clay subsoil layer (hereinafter also referred to as subsoil) and a working machine used therefor, for example, the subsoil improvement method and subsoil improvement described in Patent Document 1 Work machines are known.

  The working machine for improving subsoil described in Patent Document 1 cultivates (excavates) a soil layer (hereinafter also referred to as soil) with a plow, and exposes the first soil layer. A groove is excavated in the subsoil layer by (ii), and a hydrophobic material is poured into this groove, and then the chisel is used to crush the subsoil around the groove to widen the groove width and the hydrophobic material that has been thrown into the groove Unravel and mix the ground soil that has been crushed (swelling and softening). Next, when the work implement moves next to the first subsoil layer and plow newly cultivates the second subsoil layer, the first subsoil layer cultivated just before that soil and The trench is covered with soil, that is, the cultivated soil is covered so that the subsoil layer exposed from the soil layer is restored.

JP-A-2-211801

  However, the above-described conventional subsoil improvement work machine has a problem that the hydrophobic material cannot be uniformly introduced into the groove, and the dispersion performance of the hydrophobic material is low. That is, when the hydrophobic material in the tank is fed backward and conveyed backward by the conveyor and dropped onto the cross feed conveyor, the rear feed conveyor and the cross feed conveyor are arranged orthogonal to each other. It is dropped and accumulated in one place in the width direction on the transverse conveyor. In other words, since it is not evenly distributed and dropped in the width direction of the transverse feed conveyor, the hydrophobic material thrown into the groove from the transverse feed conveyor varies in the longitudinal direction of the groove. In addition, when the hydrophobic material in the tank is fed backward and conveyed by the conveyor, only the lowermost hydrophobic material placed on the backward fed conveyor is conveyed, and the upper hydrophobic material is not conveyed. Hydrophobic material bridges are formed between them, and the transport amount of the hydrophobic material by the backward delivery conveyor varies.

  Therefore, in order to reduce such a variation in the transport amount of the hydrophobic material, conventionally, an operator manually breaks the bridge of the hydrophobic material generated in the tank with an appropriate tool such as a bar, The hydrophobic material dropped onto the conveyor was scraped out and distributed evenly in the width direction of the conveyor.

  However, since the hydrophobic material scraping and the bridge breaking work by such an operator are performed while the subsoil improvement work machine is towed by the tractor and the subsoil improvement work is being performed, the work of two people A worker who operates the tractor and a worker who scrapes the hydrophobic material and breaks the bridge, and a worker who drives the tractor and scrapes the hydrophobic material and breaks the bridge Therefore, careful driving and sufficient safety confirmation and ensuring are required, so there is a lot of mental burden, and there is a heavy physical burden on workers who scrape hydrophobic materials and break bridges There was a problem.

  The present invention has been made in order to solve the above-described conventional problems. The object of the present invention is to eliminate the need for the operator to scrape the hydrophobic material and break the bridge. An object of the present invention is to provide a working machine for improving the subsoil, which can make the input amount of the material into the groove constant, can save labor and improve the dispersion performance of the hydrophobic material.

  In order to achieve the above object, a working machine for improving subsoil according to the present invention includes a machine body with a tire, a tank for storing a hydrophobic material installed on the machine body, and an inner bottom portion of the tank. Conveying material from the front to the rear and discharging it from the rear opening of the tank to the outside, and conveying the hydrophobic material discharged from the rear opening of the tank toward one side of the machine body A transverse conveyor, a plow disposed below the machine body to cultivate a soil layer to expose the subsoil layer, and disposed rearward of the plow so as to be movable up and down below the machine body, Hydrophobic that scrapes and disperses the pillars excavating grooves in the subsoil layer and the hydrophobic material dropped on the transverse feed conveyor from the rear opening of the tank in a direction perpendicular to the conveying direction of the transverse feed conveyor Equipped with a material scraping adjustment device And those are.

  Moreover, the working machine for subsoil improvement which concerns on this invention makes the said hydrophobic material scraping adjustment apparatus and the said horizontal feed conveyor interlock | cooperate in the said invention.

  Moreover, the working machine for improving subsoil according to the present invention includes a rear scraping device that is provided in the upper part of the tank and scrapes the hydrophobic material in the tank.

  In the subsoil improvement work machine according to the present invention, the hydrophobic material scraping adjusting device includes a fin roller having a plurality of scraping fins provided on the outer periphery of the rotating shaft so as to be spaced apart from each other in the axial direction. is there.

  The subsoil improvement work machine according to the present invention includes a hydraulic shutter that opens and closes the rear opening of the tank.

  Moreover, the working machine for improving subsoil according to the present invention is such that at least two plows are vertically arranged in the front-rear direction by shifting in the left-right direction of the machine body.

  Furthermore, the working machine for improving the subsoil according to the present invention is provided with an opener on the column that protects the groove and introduces a hydrophobic material dropped from the transverse conveyor into the groove.

  In the present invention, the hydrophobic material dropped onto the lateral feed conveyor from the rear delivery conveyor is scraped and dispersed in the direction orthogonal to the traveling direction of the lateral feed conveyor by the hydrophobic material scraping adjustment device. The amount of hydrophobic material can be made uniform in the direction. Therefore, the operator does not need to scrape off the hydrophobic material and can save labor, and a certain amount of the hydrophobic material can be put into the groove, so that the dispersion performance of the hydrophobic material can be improved.

  In the invention in which the hydrophobic material scraping adjustment device and the transverse feed conveyor operate in conjunction with each other, the hydrophobic material can be continuously put into and dispersed in the groove, and the continuous drive device of the transverse feed conveyor can be adjusted with the hydrophobic material scraping adjustment. It can also be used as a device.

  In the invention provided with the rear scraping device, the hydrophobic material above the inside of the tank is scraped out, so that no bridge of the hydrophobic material is generated in the tank. Since a certain amount of the hydrophobic material can be conveyed by the conveyor, the spraying performance can be improved.

  In the invention in which the hydrophobic material scraping adjusting device includes a fin roller having a plurality of fins for scraping, the fin roller scrapes and loosens the hydrophobic material, and therefore can cope with any hydrophobic material.

  In the invention provided with the hydraulic shutter, the shutter can be controlled to be opened and closed by remote control from the driver's seat, and the opening degree of the rear opening of the tank can be adjusted quickly. Further, when the hydrophobic material is stored in the tank, the hydrophobic material can be prevented from spilling out from the rear opening by closing the rear opening of the tank with the shutter.

  In the invention in which at least two plows are installed vertically, each plow shares the soil and cultivates it, so that the soil can be cultivated widely, and the resistance of the soil to each plow can be reduced. it can.

  In the invention in which the opener is provided in the column, the opener can protect the groove formed by the column and prevent the groove wall from collapsing. Moreover, the hydrophobic material dropped from the transverse feed conveyor can be thrown into the groove.

It is a side view which shows one Embodiment of the working machine for subsoil improvement which concerns on this invention. It is a front view of the work machine for concentric soil improvement. It is a top view of the working machine for concentric soil improvement. It is a side view of a hydrophobic material throwing-down part. It is the VV sectional view taken on the line of FIG. It is sectional drawing which shows the tank inside of the working machine for concentric soil improvement. It is a perspective view of a back scraping apparatus. (A), (b) is the front view and side view of the back scraping apparatus. It is a perspective view of a pillar and an opener. It is a figure which shows the reciprocating plowing method by outside plowing. (A)-(d) is a figure which shows a subsoil improvement process. It is a top view of the working machine for subsoil improvement which shows other embodiment of this invention. FIG. 13 is a front view of the work machine for improving concentric soil.

  1 to 3, the subsoil improvement work machine indicated by reference numeral 1 as a whole is intended to improve the subsoil by introducing and spraying a hydrophobic material A to a field H such as a field and grassland in a heavy clay zone. An airframe 2 that is towed by a tractor not shown is provided. The airframe 2 includes a frame 3 having a rectangular frame shape that is long in the front-rear direction, and three tires 5 that are attached to the lower side of the frame 3 so as to be movable up and down, and are moved up and down by a hydraulic cylinder 4. A tank 6 for storing A and a hydraulic tank 7 are installed, and a top link 8 and a lower link 9 connected to the tractor are attached to the front end. The hydraulic cylinder 4 holds the body 2 by lowering the tire 5 to the lowest position indicated by a two-dot chain line in FIG. 1 when the subsoil improvement work machine 1 is not working, and at the uppermost position indicated by a broken line when working. The airframe 2 is raised and held.

  In the field H, a soil layer B having a surface layer portion of about 25 to 30 cm in thickness is formed, and a subsoil layer C made of clay is formed in the lower layer.

  As the hydrophobic material A, organic compost (for example, bark compost), sand, shells, chips and the like are used.

  Although the tank 6 has a box shape that is long in the front-rear direction with the upper part opened, the lower part has an inverted trapezoidal shape that spreads upward, and the upper part is formed in a rectangular box shape. A rear delivery conveyor 10 that conveys from the rear to the rear is disposed, and a rear opening 11 is formed at the lower back. The rear delivery conveyor 10 is a belt conveyor and has substantially the same length and width as the bottom of the tank 6. The rear opening 11 is formed corresponding to the rear delivery conveyor 10 and is opened and closed by a hydraulic shutter 12. The hydraulic shutter 12 is controlled to open and close when an operator operates a switch at the driver's seat of the tractor to drive the hydraulic cylinder 12A. Further, a rear scraping device 13 that scrapes the hydrophobic material A stored in the rear upper portion of the tank 6 and closer to the rear is disposed in the rear and upper portion of the tank 6.

  3 and 6 to 8, the rear scraping device 13 includes a drive shaft 14 rotatably supported between the left and right side walls 6 a and 6 b of the tank 6, and a number of scrapes attached to the drive shaft 14. And a motor (not shown) that rotates the drive shaft 14 in a scraping direction indicated by an arrow 17 in FIGS. The scraping blades 15 are formed of elongated rectangular plate-like blades that are attached at a certain interval in the axial direction of the drive shaft 14, and are arranged in the axial direction of the drive shaft 14 in pairs. Further, the pair of scraping blades 15a and 15b is mounted with a 180 ° phase shift in the circumferential direction of the drive shaft 14 and a required mounting angle α () so as to be inclined with respect to the axis of the drive shaft 14. For example, it is attached with α = 60 °: FIG. Further, a pair of adjacent blades 15a and 15b adjacent to each other in the axial direction of the drive shaft 14 are attached with a 90 ° phase shift in the circumferential direction of the drive shaft 14 so as to be orthogonal to each other.

  In FIG. 1 and FIG. 3 to FIG. 6, the rear side of the machine body 2 is a side which transports the hydrophobic material A transported by the rear delivery conveyor 10 and dropped from the rear opening 11 of the tank 6 to the hydrophobic material lowering portion 20. A feed conveyor 21 is provided. The transverse feed conveyor 21 is composed of a belt conveyor, and is disposed so as to be orthogonal to the backward delivery conveyor 10, and conveys the hydrophobic material A to the right end of the rear end of the machine body 2. The hydrophobic material throwing-down portion 20 is located at the right end of the rear end of the machine body 2 and immediately below the end of the transverse feed conveyor 21. Further, in the vicinity of the terminal end above the transverse feed conveyor 21, the hydrophobic material A dropped from the backward delivery conveyor 10 onto the transverse feed conveyor 21 is in a direction perpendicular to the conveying direction of the transverse feed conveyor 21, in other words, the machine body 2. A hydrophobic material scraping adjustment device 22 is disposed so as to be scraped in the front-rear direction and uniformly dispersed.

  The hydrophobic material scraping adjusting device 22 is attached to a rotary shaft 26 rotatably supported between the front and rear walls 25a and 25b of the transverse feed conveyor 21, and to the outer periphery of the rotary shaft 26 with a predetermined interval in the axial direction thereof. The fin roller is composed of a plurality of scraping fins 27. Such a hydrophobic material scraping adjusting device 22 transmits the rotation of the motor 29 that drives the drive shaft 28 of the lateral feed conveyor 21 via the chain 30, so that the horizontal feed conveyor 21 is dropped and sprayed when the hydrophobic material A is dropped. Accordingly, the motor 29 is also used as a drive device for the hydrophobic material scraping adjusting device 22.

  In FIG. 1, FIG. 4, FIG. 6 and FIG. 9, a coulter 34, a plow 35 and a pillar 36 are further arranged on the lower right side of the machine body 2. The coulter 34 is used to cut the residue in the field H as the subsoil improvement work machine 1 travels forward. The colter 34 is formed in a disk shape and is rotatable below the right front end of the machine body 2 and a spring or the like. These shock absorbers (not shown) can be moved up and down and tilted in the left-right direction.

  The plow 35 cultivates the soil layer B and exposes the subsoil layer C. The plow 35 is on the right side immediately after the colter 34 and below the colter 34, and is the lowest when not working. It is arranged so as to be located slightly above the position of the tire 5. Further, the plow 35 is formed to have a shape and an inclination angle that can cultivate the soil B and reverse it to the right in the traveling direction. That is, the plow 35 reverses the plowing portion 35A tilted to the right and behind the plowing soil B, and the plowing soil B cultivated by the plowing portion 35A. A reversing portion 35B having a butterfly wing shape is integrally formed. The inclination angle β of the plow 35 with respect to the machine center axis is approximately 40 ° (FIG. 3).

  The pillar 36 excavates a groove 40 (FIG. 11) for introducing and dispersing the hydrophobic material A on the surface of the subsoil layer C exposed by the cultivation of the soil layer B by the plow 35, Immediately after the plow 35, the plow 35 is disposed so as to be movable up and down, and is configured to be lifted and lowered by a hydraulic cylinder 41. Further, the pillar 36 has a width sufficiently smaller than the width W (FIG. 3) of the plow 35 and is disposed so as to be positioned on the substantially center line in the width direction of the plow 35. When the subsoil improvement work machine 1 is not in operation, the hydraulic cylinder 41 raises and holds the beam pillar 36 to the uppermost position so as to be substantially the same height as the plow 35 as shown by the solid line in FIG. During the subsoil improvement work, the pillar 36 is lowered and held at the lowest position below the plow 35 indicated by the two-dot chain line, for example, about 30 cm. In FIG. L is the ground surface; L is the lower level of the plow 35, Q. The bottom level of the groove 40 excavated by the L beam column 36 is shown.

  1, FIG. 3 to FIG. 6 and FIG. 9, an opener 45 that is substantially U-shaped in plan view and that opens to the top and bottom and is formed by a metal plate is attached to the back of the pillar 36. The opener 45 has a function of protecting the groove 40 excavated by the pillar 36 and preventing the groove wall from collapsing, and a function of feeding the hydrophobic material A dropped from the transverse feed conveyor 21 into the groove 40. , And are attached to the pillars 36A of the pillars 36 so as to be located directly below the hydrophobic material charging portion 20. The opener 45 is formed longer than the width of the transverse feed conveyor 21 and has a rear end extending rearward from the transverse feed conveyor 21 and is formed sufficiently higher than the groove 40 excavated by the pillar 36 and is formed at the lower end front end. A guide member 47 (not shown) is provided at the rear end of the lower end of the pillar 36 with the same height as the lower end of the column 36 and guides the hydrophobic material A dropped from the transverse conveyor 21 to the opener 45 in the upper opening. The lower end of FIGS. 5 and 9) is inserted. Further, the opener 45 has a function of widening the groove 40 by making the width larger than the width of the column 36. The guide member 47 is formed in an oval cylindrical body having a flat cross-sectional shape by an elastic material such as rubber, and is attached to a cover 48 that covers the upper side of the transverse feed conveyor 21.

Next, the subsoil improvement work by the subsoil improvement work machine 1 having the above structure will be described.
In FIG. 1, the subsoil improvement work machine 1 stores a hydrophobic material A in a tank 6, and is then connected to a tractor T (FIG. 10) and conveyed to a predetermined field H. When transporting to the field H, the tire 5 is lowered and held by the hydraulic cylinder 4 to a lowermost position slightly lower than the lower end of the plow 35, and the column 36 is raised to the uppermost position by the hydraulic cylinder 41. As a result, when the subsoil improvement work machine 1 is transported, only the tire 5 contacts the road surface and supports the machine body 2, so that the plow 35 and the pillar 36 do not plow the road surface. Further, it is possible to prevent the plow 35 or the pillar 36 from being damaged.

  The types of tillage by the subsoil improvement work machine 1 include: a. A reciprocating tillage method that plows while reciprocating the cultivated land; b. Cultivating method for plowing around the cultivated land, c. One-way plowing tillage only on the cultivated land, d. Four types of sequential tillage methods are known in which the entire cultivated land is cultivated while meandering and the gravel soil is reversed in the same direction. In the present embodiment, an example in which plowing is performed by the reciprocating tillage method using the turnover tillage shown in FIG. That is, in the reciprocating tillage method using the reverse turnout, the plowing unit 49 is plowed while the subsoil improving work machine 1 reciprocally travels from both sides of the cultivated land (field H) toward the center of the plowing unit 49. Then, the gravel soil is inverted to the outside (the right side in the traveling direction), and a plurality of grooves 40 are excavated at a predetermined pitch.

  The left and right ends of the farm field H form a turning and moving part of the tractor T, and when the subsoil is improved by the plowing unit 49, the subsoil improvement work machine 1 does not improve the subsoil and is called a non-plowing called a common headland. Portions 50 and 51 (shaded portions in FIG. 10) are formed. These non-plowing parts 50 and 51 are substantially equal to the total length (about 10 m) of the tractor T and the subsoil improvement work machine 1, and this part is after the subsoil improvement work of the plowing part 49 is completed. Then, the soil layer B and the trench 40 are excavated by the one-way cultivation method by the subsoil improvement work machine 1, and the hydrophobic material A is charged, spread, and then covered with the soil.

  When the tractor T pulls the subsoil improvement work machine 1 and arrives at the field H, the tractor T stops the subsoil improvement work machine 1 at the right end of the right non-plowing portion 50 in FIG. To do. Next, the tire 5 is raised to the uppermost position by the hydraulic cylinder 4 and the airframe 2 is relatively lowered, and the plow 35 is brought into contact with the surface of the subsoil layer C that has been excavated in the right non-plow portion 50. . Further, the pillar 36 is lowered to the lowest position by the hydraulic cylinder 41, and the lower ends of the pillar 36 and the opener 45 are inserted into grooves formed in advance on the surface of the subsoil layer C. When the machine body 2 is lowered as the tire 5 rises, the lower end of the coulter 34 is pushed into the soil formation layer B by the weight of the subsoil improvement work machine 1 as shown in FIG.

  When the preparation of the subsoil improvement work by the subsoil improvement work machine 1 is completed, the operator starts the subsoil improvement work by the subsoil improvement work machine 1 by moving the tractor T forward. Simultaneously with the start of traveling of the tractor T, the power supply switches of the rear feed conveyor 10, the rear scraping device 13, and the lateral feed conveyor 21 are turned on to drive them. When the transverse feed conveyor 21 is driven, the hydrophobic material scraping adjusting device 22 is also operated in conjunction with this. Further, the hydraulic cylinder 12A is driven to operate the hydraulic shutter 12, and the rear opening 11 of the tank 6 is opened.

  When the rear delivery conveyor 10, the rear scraping device 13, the lateral feed conveyor 21 and the hydrophobic material scraping adjustment device 22 are driven, the hydrophobic material A accumulated in the lower layer in the tank 6 is moved backward by the rear delivery conveyor 10. It is transported, dropped onto the lateral feed conveyor 21 from the rear opening 11, and transported above the hydrophobic material feeding unit 20 by the lateral feed conveyor 21.

  On the other hand, the upper layer hydrophobic material A accumulated in the upper rear portion of the tank 6 is scraped rearward by the rear scraping device 13, thereby preventing the bridge from being generated. That is, when the lowermost hydrophobic material A stored in the tank 6 is moved by the rear delivery conveyor 10, if the upper layer hydrophobic material A does not move, the upper and lower portions of the hydrophobic material A Slip occurs between them. For this reason, a cavity is formed between the upper layer portion and the lower layer portion of the hydrophobic material A, and the hydrophobic material A in the upper layer portion from this cavity forms a bridge that connects the left and right side walls 6a, 6b of the tank 6. When such a bridge is formed, the transport amount of the hydrophobic material A by the rear delivery conveyor 10 varies. Therefore, by scraping out the upper layer hydrophobic material A by the rear scraping device 13, a bridge is not formed, and the transport amount of the hydrophobic material A by the rear delivery conveyor 10 can be made substantially constant.

  The hydrophobic material A dropped on the lateral feed conveyor 21 is evenly distributed in the width direction of the lateral feed conveyor 21 by being scraped by the hydrophobic material scraping adjusting device 22 in the middle of being transported toward the hydrophobic material feeding unit 20. Dispersed and dropped into the hydrophobic material charging unit 20 from the end of the transverse feed conveyor 21 by a certain amount. That is, the hydrophobic material A is dropped into the opener 45 by a certain amount through the guide member 47.

  On the other hand, when the subsoil improvement work machine 1 is pulled by the tractor T and moves forward, the plow 35 plows the soil B at the right end of the field H and reverses it to the right side to expose the subsoil layer C (FIG. 11). (A)). The column 36 excavates the groove 40 (FIG. 11B) by passing through the subsoil layer C exposed by the plow 35, and the opener 45 protects the groove 40 to prevent the groove wall from collapsing. Widen (FIG. 11, (c)). Further, as described above, the opener 45 puts and spreads the hydrophobic material A dropped from the end of the transverse feed conveyor 21 through the guide member 47 into the widened groove 40 and generates the improved subsoil F (FIG. 11 (c)). )). In FIG. 11, B ′ is the soil that has been cultivated and inverted.

  The subsoil improvement work machine 1 moves forward and arrives at the right end of the left non-plow portion 51, and then plows the soil B in the first row, excavates the groove 40, and inputs and disperses the hydrophobic material A. finish. Then, it turns left and moves to the left end of the left non-plow portion 51. At the time of this turning movement, the subsoil improvement work machine 1 is lifted using the three-point hitch of the tractor T, and the column 36 is moved up to the uppermost position and moved to the left end of the left non-plow portion 51. When moving and stopping, the subsoil improvement work machine 1 is lowered to return the pillar 36 to its original height. Next, it moves forward toward the left end of the right non-plow portion 50, and in the same way as above, plowing the soil formation layer B in the first row on the left, excavating the groove 40, putting in the hydrophobic material A, spraying, and improving Soil F is generated. When the right non-plowing portion 50 is advanced to the left end and the plowing of the soil layer B in the left first row, the excavation of the groove 40, the introduction of the hydrophobic material A, and the application are finished, the left non-plowing portion 51 Move to the left side of the work start position G. At this time as well, the subsoil improvement work machine 1 is raised and the pillar 36 is raised as described above. That is, when moving in the left and right non-plowing parts 50 and 51, the subsoil improvement working machine 1 is moved in the same state as that when the tractor T is transported.

  The subsoil improvement work machine 1 moves to the left side of the work start position G of the right non-plowing portion 51 and then moves forward again toward the left non-plowing portion 51 to make the right second row of soil formation layers B. Plowing, excavation of the groove 40, introduction of the hydrophobic material A, and dispersion are performed to generate the improved subsoil F. At this time, the soil B ′ cultivated by the plow 35 and inverted to the right side is exposed from the groove 40 and the soil layer B in which the right-side improved core soil F, that is, the hydrophobic material A at the right end is charged and dispersed. The subsoil layer C is covered and returned to the original state (FIG. 11D). Similarly, the subsoil improvement work machine 1 turns counterclockwise toward the center of the field H and repeats traveling, so that the soil B in the field H other than the left and right non-tillage parts 50 and 51 can be obtained. Tillage, excavation of the groove 40, introduction of the hydrophobic material A, dispersion, covering of the groove 40 and the subsoil C with the soil B are performed.

  After the subsoil improvement work of the tilling part 49 by the subsoil improvement working machine 1 is completed, the subsoil improvement work of the left and right non-plowing parts 50 and 51 is continued. For the left and right non-plow portions 50 and 51, the soil layer B is excavated by the one-way plowing method with the subsoil improvement work machine 1 as described above to form the grooves 40 on the surface of the subsoil layer C, Further, the hydrophobic material A is put into the groove 40 and dispersed, and the subsoil layer C exposed from the groove 40 and the soil layer B is covered with the excavated soil B ′ and returned to the original state. End of the work to improve the subsoil

  Thus, in the subsoil improvement work machine 1 according to the present invention, the hydrophobic material A on the lateral feed conveyor 21 is scraped in the front-rear direction of the machine body 2 by the hydrophobic material scraping adjusting device 22 provided above the lateral feed conveyor 21. The amount of the hydrophobic material A to be fed from the transverse feed conveyor 21 into the groove 40 can be made constant, and the dispersion of the hydrophobic material A in the longitudinal direction of the groove 40 can be eliminated. Can do. In addition, since the rear scraping device 13 is provided above the interior rear of the tank 6, the bridge due to the hydrophobic material A does not occur, the dispersion of the transport amount of the hydrophobic material A by the rear delivery conveyor 10 is eliminated, and the subsoil is improved. The spraying performance of the hydrophobic material A by the working machine 1 can be improved. Moreover, it is necessary for one worker to drive the subsoil improvement work machine 1 by driving the tractor T, and another worker rides on the machine body 2 to scrape the hydrophobic material A and break the bridge. It is possible to save labor. Furthermore, the soil physical properties such as air permeability, water permeability, water retention and fertility of the field H can be improved by the swelling and softening of the subsoil layer C and the introduction and dispersion of the hydrophobic material A.

12 and 13 are a plan view and a front view showing a working machine 100 for improving subsoil according to another embodiment of the present invention.
In the present embodiment, the two colters 34A and 34B and the plows 35A and 35B are vertically shifted from each other in the front-rear and left-right directions. The plows 35A and 35B have the same size as the plow 35 used in the above-described embodiment, and are respectively disposed immediately after the coulters 34A and 34B. The amount of displacement of the plows 35A, 35B in the left-right direction is set to a value substantially equal to or slightly smaller than the plow width W, and the amount of displacement in the front-rear direction is set to an appropriate value. Since other configurations are the same as those of the above-described embodiment, the same components and portions are denoted by the same reference numerals, and description thereof is omitted.

  In such a subsoil improvement work machine 100, the plows 35A and 35B have the same size as the plow 35 shown in FIG. It can be plowed, so the number of grooves 40 can be halved and the working time can be shortened. In addition, when the plowing width of the soil layer B is 2 W and the plowing with one large plow is compared with the plowing with two small plows 35A and 35B, the plowing is performed with one large plow. Since the plowing resistance of each of the plows 35A and 35B can be halved compared to the plowing resistance in the case, there is no need to manufacture a plow having a high strength and rigidity, and an inexpensive off-the-shelf plow is used. Can do. The number of plows is not limited to two, and two or more plows may be used depending on the size of the plow, the groove width of the groove 40 and the tilling width of the soil B.

  DESCRIPTION OF SYMBOLS 1 ... Subsoil improvement work machine, 2 ... Airframe, 5 ... Tire, 6 ... Tank, 10 ... Backward delivery conveyor, 11 ... Back opening, 12 ... Hydraulic shutter, 13 ... Backward scraping device, 21 ... Side feed Conveyor, 22 ... hydrophobic material scraping adjusting device, 26 ... rotating shaft, 27 ... scraping fin, 35, 35A, 35B ... plow, 36 ... pillar, 40 ... groove, 45 ... opener, A ... hydrophobic material, B ... product Soil layer, C ... subsoil layer, F ... improved subsoil.

Claims (7)

With tires,
A tank for storing a hydrophobic material installed on the airframe;
A rear delivery conveyor disposed on the inner bottom of the tank to convey the hydrophobic material from the front to the rear and discharge the hydrophobic material to the outside from the rear opening of the tank;
A transverse feed conveyor for conveying the hydrophobic material discharged from the rear opening of the tank toward one side of the machine body;
A plow disposed below the aircraft to cultivate the soil layer and expose the subsoil layer;
Positioned behind the plow and disposed below the fuselage so as to be movable up and down, and a pillar for excavating a groove in the subsoil layer,
Work for improving subsoil including a hydrophobic material scraping adjustment device that scrapes and disperses the hydrophobic material dropped from the rear opening of the tank onto the lateral feed conveyor in a direction perpendicular to the conveying direction of the lateral feed conveyor Machine. The working machine for improving subsoil according to claim 1,
A working machine for improving the subsoil that links the hydrophobic material scraping adjusting device and the transverse feed conveyor. In the working machine for improving subsoil according to claim 1 or 2,
A working machine for improving subsoil provided with a rear scraping device that is provided above the tank and scrapes the hydrophobic material in the tank. In the working machine for subsoil improvement according to any one of claims 1, 2, and 3,
A working machine for improving subsoil, wherein the hydrophobic material scraping adjusting device comprises a fin roller having a plurality of scraping fins provided on an outer periphery of a rotating shaft so as to be spaced apart from each other in the axial direction. In the working machine for subsoil improvement as described in any one of Claims 1-4,
A working machine for improving subsoil, comprising a hydraulic shutter that opens and closes a rear opening of the tank. In the working machine for subsoil improvement as described in any one of Claims 1-5,
A subsoil improvement work machine in which at least two plows are vertically shifted in the front-rear direction by shifting the plow in the left-right direction. In the working machine for the subsoil improvement according to any one of claims 1 to 6,
A working machine for improving subsoil, which protects the groove and is provided with an opener on the pillar to introduce a hydrophobic material dropped from the transverse conveyor into the groove.

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