JP5320235B2 - Soil disinfector - Google Patents

Description

  The present invention relates to a technology of a soil disinfector that is pulled by a towing vehicle and injects a chemical solution into a field in order to improve the cultivation of horticultural crops, vegetables, and the like, and in particular, to enhance the effect of the chemical solution, It is related with the technique of leveling the field.

  2. Description of the Related Art Conventionally, a technique of a soil disinfecting machine that is pulled by a towing vehicle such as a tractor or a management machine and injects a chemical solution into a field for cultivating horticultural crops, vegetables, and the like and then smoothes the field is known. As a technique of such a soil disinfecting machine, the technique described in Patent Document 1 is known.

  The soil disinfecting machine described in Patent Document 1 includes an arm, a flat plate supported by the arm so as to be rotatable up and down, and a spring that biases the flat plate downward. In such a configuration, when the soil disinfector is pulled while the lower end of the leveling plate is in contact with the field, the field can be leveled and leveled by the leveling plate.

  However, when the soil disinfector is towed by a tow traveling vehicle, the rear wheel of the tow traveling vehicle passes to form ridges in the field, and soil from the field is attracted between the rear wheels. May be formed (hereinafter, simply referred to as “slip portion”). In such a case, depending on the leveling plate, it may not be possible to completely fill the basket and level the field. As a result, the gas obtained by vaporizing the chemical solution from the traces of the soot may be discharged, resulting in unevenness of the effect of the chemical solution.

Japanese Patent Laid-Open No. 7-23686

  This invention is made | formed in view of the above situations, and provides the soil disinfection machine which can level a field more evenly.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, it is a soil disinfector which is pulled by the towing vehicle and injects the chemical liquid into the field, and is disposed behind the towing vehicle and averages the surface of the field after the chemical liquid is injected. A flat plate and a distribution portion that is disposed on the front side surface of the flat plate and distributes the soil left and right and allows a predetermined amount of soil to pass rearward, the distribution portion including a distribution member, and the distribution member Is formed in a sharp shape that decreases in width from the rear to the front, and the lower end is disposed at a position higher than the lower end of the flat plate, and further, the lateral width can be changed, A protruding plate is provided along the pair of left and right side surfaces of the distribution member that can protrude downward from the lower end of the side surface .

According to a second aspect of the present invention, in the soil disinfector according to the first aspect, there are provided auxiliary plates that are disposed at both ends of the front side surface of the flat plate and guide the soil to the inside of the flat plate .

  As effects of the present invention, the following effects can be obtained.

In Claim 1, it is a soil disinfector which is pulled by the towing vehicle and injects the chemical liquid into the field, and is disposed behind the towing vehicle and averages the surface of the field after the chemical liquid is injected. A flat plate and a distribution portion that is disposed on the front side surface of the flat plate and distributes the soil left and right and allows a predetermined amount of soil to pass rearward, the distribution portion including a distribution member, and the distribution member Is formed in a sharp shape that decreases in width from the rear to the front, and the lower end is disposed at a position higher than the lower end of the flat plate, and further, the lateral width can be changed, The soil can be distributed to the left and right and to the rear by a distribution unit provided with a protruding plate that can protrude downward from the lower end of the side surface along the pair of left and right side surfaces of the distribution member .

  In this way, the soil is distributed in the entire width direction of the leveling plate in advance, and then the surface of the field is leveled with the leveling plate. Can be leveled.

Further , the soil can be distributed to the left and right along the outer edge of the distribution member whose width increases from the front to the rear.

  Moreover, the soil can be passed to the rear of the distribution member through the lower side of the distribution member. Thereby, soil can be distributed over the entire width direction of the flat plate.

Further , by changing the width of the leveling member, the soil of the close soil portion can be distributed to an arbitrary width.
Thereby, the soil can be caused to flow into the ridge formed by the wheels of the towing vehicle by adjusting the width of the leveling member to be substantially the same as the width between the wheels of the towing vehicle. In addition, when the soil disinfector is mounted on a towing vehicle with a different width between the left and right wheels, the width of the distribution member can be adjusted to the width between the wheels of the towing vehicle, improving versatility. Can be made.

Further , by projecting the protruding plate downward from the distribution member, the soil can be distributed also by the protruding plate, and the amount of soil distributed to the left and right can be increased compared to the case of only the distribution member. . Thus, the amount of soil distributed to the left and right can be adjusted according to the state of the field, and the field can be leveled more evenly.

In claim 2 , by guiding the soil from both ends of the flat plate to the inside, it is possible to prevent the soil from flowing out to the outside of the flat plate, and the field can be surely leveled by the flat plate.

  In addition, even if it is not possible to allow a sufficient amount of soil to level the cocoon to flow into the cocoon, the soil guided by the auxiliary plate from both ends of the slab to the inside is supplied to the cocoon. By making it flow, the said soot can be leveled reliably.

The side view which shows the whole structure of the soil disinfector which concerns on one Example of this invention. The perspective view which shows the mounting part and chemical | medical solution injection | pouring part of a soil disinfection machine. The perspective view which shows arrangement | positioning of a chemical | medical solution pump and a driving wheel. The perspective view which shows the structure of a soil leveling part. Explanatory drawing which shows the impact mitigation mechanism of a chemical | medical solution injection nail, (a) is explanatory drawing which shows the nail support condition before receiving an impact, (b) is explanatory drawing which shows the nail support condition after receiving an impact. Side surface partial sectional drawing which shows a chemical | medical solution pump and its drive structure. The perspective view which shows 1st embodiment of a flat plate and a distribution part. BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the mode of the leveling work in 1st embodiment, (a) is a side view, (b) is a top view. The perspective view which shows 2nd embodiment of a flat plate and a distribution part. Schematic plan view showing a state of leveling work in the second embodiment, (a) is a case where the width of the distribution unit is adjusted narrowly, (b) is a case where the width of the distribution unit is adjusted wide. The perspective view which shows 3rd embodiment of a flat plate and a distribution part, (a) is the figure which showed the mode of attachment of a protrusion board, (b) was the figure which showed the mode that the protrusion board was protruded below. The perspective view which shows 4th embodiment of a flat plate and a distribution part. The plane schematic diagram which shows the mode of leveling work in 4th embodiment. The perspective view which shows the structure of a stand. The side schematic diagram which shows the soil disinfection machine supported by the stand. The side schematic diagram which shows the soil disinfection machine after changing the attachment height of a stand. The side schematic diagram which shows the soil disinfection machine supported by the stand in a forward leaning posture. The side schematic diagram which shows the state which match | combined the position of a soil disinfector and a quick frame. The side schematic diagram which shows the state which connected the soil disinfector via the quick frame.

  Below, the soil disinfector 1 which is one Embodiment of the soil disinfector which concerns on this invention is demonstrated.

  As shown in FIG. 1, the soil disinfecting machine 1 is connected to a rear portion of a tractor 2 that is a towing vehicle so as to be lifted and lowered via a lifting mechanism 3. The elevating mechanism 3 includes a pair of left and right lower links 4 and 4 and a top link 5 and a quick frame 6 connected to the lower links 4 and 4 and the top link 5. The soil sterilizer 1 is not limited to the tractor 2 shown in the present embodiment, but can be sterilized in the field by pulling the soil sterilizer 1 such as other management machines. If it is.

  As shown in FIGS. 1 and 2, the quick frame 6 is a frame configured in a substantially triangular shape, and has an upper notch 7a that opens upward at one apex located at the upper end. The upper connecting portion 7 is also fixedly provided at two apex portions positioned at the left and right lower ends with a lower connecting portion 8 having a lower notch portion 8a opened rearward. The rear end of the top link 5 is connected to the upper connecting portion 7, and the rear ends of the lower links 4, 4 are connected to the lower connecting portion 8.

  The soil disinfecting machine 1 includes a mounting unit 10 for mounting the soil disinfecting machine 1 on the lifting mechanism 3, a chemical solution injection unit 20 for injecting a chemical solution into the soil, and a soil for leveling the soil after the chemical solution injection. It is composed of a flat part 50. The soil leveling unit 50 is a multi-type that holds a chemical solution in the field by stretching a multi-film on the field after the chemical solution is injected even if the soil is flattened by the pressure-reducing roller 75. There may be. The soil leveling unit 50 in the following embodiment will be described as a full surface suppression type that can be configured to make the total length of the soil disinfector 1 relatively short.

  In the mounting portion 10, a pair of left and right side plates 11, 11 are arranged to face each other in parallel. A top link mast 13 is erected. Further, connecting pins 11a and 11a project from the front end of the side plates 11 and 11 to the left and right, respectively, and the connecting pins 11a and 11a are respectively locked to the lower notch 8a so The lower connecting portions 8 of the frame 6 are connected to the mounting portions 10 respectively. Further, a connecting pin 13 a is horizontally mounted on the upper end portion of the top link mast 13, and the connecting pin 13 a is locked to the upper notch portion 7 a, whereby the upper connecting portion 7 of the quick frame 6 is attached to the mounting portion 10. Connected. Thus, the quick frame 6 provided in the lifting mechanism 3 of the tractor 2 enables the soil disinfector 1 to be reliably towed while being supported to be liftable.

  A machine casing 21 formed in a horizontally long rectangular shape in a plan view is horizontally disposed in the chemical solution injection section 20, and the machine casing 21 includes a pair of left and right plate-like main frames 21L and 21R, The front and rear support frames 21F and 21B are in the form of square pipes that connect and support the front end portions and the rear end portions of the main frames 21L and 21R, respectively. Then, two front mounting plates 23 and 23 are projected forward on the front surface of the front support frame 21F, and the side plates 11 and 11 are overlapped on the outside of the front mounting plates 23 and 23 and fastened with bolts or the like. On the other hand, a rear mounting plate 24 is erected on the upper surface of the center of the left and right sides of the rear support frame 21B, and the upper end portion of the rear mounting plate 24 is connected to the upper and lower middle portions of the top link mast 13 via the connecting stay 25. Has been. Thereby, the machine casing 21 can be firmly connected and supported to the mounting portion 10.

  Inside the machine frame 21, a pair of left and right vertical frames 26, 26 project forward from the rear support frame 21B, and the left and right chemical liquid tank mounting tables 27. 27 (see FIG. 1) is fixed, and chemical tanks 28 and 28 are mounted on the chemical tank mounting tables 27 and 27, respectively.

  A pair of left and right subsoilers 30, 30 are extended downward on the front support frame 21 F of the machine casing 21 via subsoiler support members 29, 29. The subsoiler support members 29 and 29 are configured so that the horizontal position of the airframe can be adjusted. The horizontal positions of the subsoiler support members 29 and 29 are adjusted so that the subsoilers 30 and 30 are positioned behind the rear wheels 9 and 9 of the tractor 2, respectively. . Moreover, the length of the part extended below the subsoilers 30 and 30 is adjusted to a length that pierces the soil that has been stepped and solidified by the rear wheels 9 and 9. By configuring in this way, when the soil disinfector 1 is pulled by the tractor 2, the soil that has been stepped and solidified by the rear wheels 9, 9 can be dug by the subsoilers 30 and 30 to be soft again.

  From the rear support frame 21B of the machine frame 21, chemical solution injection claws 31, 31... Extend obliquely downward and forward toward the soil, and a plurality of chemical solution injection claws 31, 31. Rows (4 rows in this embodiment) are arranged side by side. Chemical solution nozzles 32, 32,... For injecting the chemical solution into the soil are fixed to the rear of the chemical solution injection claws 31, 31,. Further, a pair of left and right flat frames 51 and 51 are fixed on the rear surface of the rear support frame 21B.

  In the present embodiment, the chemical liquid injection claws 31, 31... Are arranged side by side in the left-right direction. However, the present invention is not limited to this. It is also possible to adopt a configuration in which they are arranged by being shifted by a distance. By comprising in this way, the distance between adjacent chemical | medical solution injection | pouring nail | claws 31 * 31 can be taken large, and since it becomes easy for soil to pass between the said chemical | medical solution injection | pouring nail | claws 31 * 31, the soil disinfection machine 1 is the said soil. The resistance force received from can be reduced.

  As shown in FIG. 3, the front end upper portion of the drive wheel support frame 33 is fixed to the front end lower portion of the leveling frame 51. A pump support frame 34 is erected in the middle of the front and rear of the drive wheel support frame 33, and a chemical liquid pump 36 is disposed via a pump support stay 35 that is provided laterally at the upper end of the pump support frame 34. A driving wheel 38 that is rotatably supported by the driving wheel support frame 33 via a driving wheel rotation shaft 37 is disposed below the chemical pump 36. In this embodiment, the same number of chemical liquid injection claws 31, 31..., That is, two for each of the left and right pump support frames 34, a total of four chemical liquid pumps 36, 36. 38 ... are provided.

  As shown in FIGS. 1 and 2, an L-shaped attachment in a side view in which the same number of chemical flow confirmation meters 39 as the chemical liquid pump 36 are juxtaposed in the horizontal direction of the machine body is disposed above the left and right central part of the machine frame 21. The plate 40 is disposed, the mounting plate 40 is fixed to the upper end portion of the pole 41, and the lower end portion of the pole 41 is erected on a pole mounting member 42 fixed to the substantially right and left central portion of the rear support frame 21B. Yes. 1, the chemical tank 28 and the chemical pump 36 are connected by a suction hose 43, and the chemical pump 36 and a chemical flow check meter 39 are connected by a discharge hose 44 to check the chemical flow. The total 39 and the chemical nozzle 32 are connected by an injection hose 45.

  In such a configuration, the chemical liquid in the chemical liquid tank 28 is sucked by the chemical liquid pump 36, and passes through the chemical liquid tank 28, the suction hose 43, the chemical liquid pump 36, the discharge hose 44, the chemical liquid flow check meter 39, and the injection hose 45. .., And the chemical liquid injection claws 31...

  Further, as shown in FIG. 4, in the soil leveling portion 50, a leveling plate stay 53 is suspended from the front and rear middle portions of the left and right leveling frames 51, 51 via a fixing member 52. A flat plate 55 is supported on the lower end portion through a flat plate rotation shaft 54 so as to be vertically rotatable. In the middle of the flat plate stay 53, an arm 56 extends rearward, and a rear end of the arm 56 and a mounting portion 55 a provided on the rear side surface of the flat plate 55 are connected by a rod 57. Further, a spring 58 is inserted through the rod 57 between the arm 56 and the attachment portion 55a, and is fixed at an arbitrary position by a snap pin or the like. The flat plate 55 is urged downward by the spring 58, and the urging force can be adjusted by changing the fixing positions at both ends of the spring 58. A distribution unit 100 is disposed at a substantially central portion on the left and right sides of the front side surface of the flat plate 55. In the above configuration, the front-rear direction position of the flat plate 55 can be adjusted by changing the front-rear mounting position of the fixing member 52 with respect to the flat frame 51. Further, the vertical position of the flat plate 55 can be adjusted by changing the vertical mounting position of the flat plate stay 53 with respect to the fixing member 52.

  Further, a horizontal frame 70 is horizontally mounted on the rear ends of the left and right flat frames 51 and 51 in the left-right direction of the machine body. More specifically, the through-hole 51a that vertically penetrates the rear ends of the flat frames 51 and 51 and a through-hole (not shown) that vertically penetrates the horizontal frame 70 are overlapped in plan view. By inserting the pin 51b through the hole 51a and the like, the flat frames 51 and 51 and the horizontal frame 70 are connected. Front ends of a pair of connecting stays 71 and 71 are supported at both left and right ends of the horizontal frame 70 so as to be vertically rotatable, and a roller frame 72 is horizontally mounted on the rear ends of the connecting stays 71 and 71. A roller spring 73 is disposed between a substantially right and left central portion of the horizontal frame 70 and a substantially right and left central portion of the roller frame 72, and the roller frame 72 is urged downward by the urging force of the roller spring 73. Is done. A pair of roller support stays 74 and 74 are extended downward at the left and right ends of the roller frame 72, and the axle 75 a of the pressure reducing roller 75 is rotatably supported between the lower ends of the roller support stays 74 and 74. Has been. In such a configuration, the pressure reducing roller 75 can rotate up and down together with the roller frame 72 and is biased downward by the biasing force of the roller spring 73. It is possible to prevent the divergence of the chemical injected into the field. Further, by changing the fixing positions of the upper and lower end portions of the roller spring 73, the force for biasing the pressure reducing roller 75 downward can be adjusted, and consequently the pressure applied to the soil surface by the pressure reducing roller 75 is adjusted. be able to.

  A scraper 76 is also supported between the rearward protruding ends of the roller support stays 74. The scraper 76 is composed of a prismatic member, and is disposed so as to be close to the outer peripheral surface of the pressure reducing roller 75. When the soil moisture content is high and the soil easily adheres, the scraper 76 reduces the pressure reducing roller 75. The soil adhering to the surface can be removed, so that the efficiency of the crushing work is not lowered.

  In such a configuration, the unevenness of the soil surface above the chemical liquid injection position where the chemical liquid was injected by the chemical liquid nozzles 32, 32... Of the chemical liquid injection claws 31, 31. After that, it is possible to prevent the vaporized chemical solution in the soil from being diffused into the air by being pressed down and solidified by the pressure reducing roller 75.

  Next, the mounting structure of the chemical liquid injection claws 31, 31... Will be described in detail.

  As shown in FIG. 5, the chemical liquid injection claw 31 is fastened and fixed by upper and lower bolts 47 and 48 to a claw support plate 46 having a reverse L-shape in a side view and projecting rearward from the rear surface of the rear support frame 21B. Yes. A plurality of mounting holes 31a through which the upper and lower bolts 47 and 48 can be inserted are drilled at regular intervals in the upper part of the chemical solution injection claw 31, and mounting holes (not shown) are also drilled in the claw support plate 46. The medicinal solution injection claw 31 is moved obliquely up and down and fastened and fixed at an arbitrary height so that the support height of the medicinal solution injection claw 31 can be adjusted stepwise.

  Further, of the upper and lower bolts 47, 48, one bolt, in this embodiment, the bolt 47 disposed on the upper side, one having a lower strength than the other bolt 48 is used. If the obstacle 120 such as the above-mentioned obstacle 120 collides with the chemical injection claw 31, the upper bolt 47 having a lower strength is broken first by the collision force at that time, and the remaining lower bolt 48 is removed. With the center, the tip of the chemical liquid injection claw 31 rotates backward from the position 121 to the position 122. As a result, the obstacle 120 is pushed outwardly to the left and right as it slides on the side surface of the chemical injection claw 31.

  That is, the chemical injection nail 31 is attached to the nail support plate 46 of the soil disinfecting machine 1 with the upper and lower bolts 47 and 48, and one of the upper and lower bolts 47 and 48 has a lower strength than the other. Even if an obstacle 120 such as a stone in the soil collides with the chemical injection nail 31, the low strength bolt, in this embodiment, the bolt 47 is broken first, and the high strength remaining without breaking. The chemical injection claw 31 rotates around the bolt 48, and the obstacle 120 can be pushed to the left and right, and the impact force received by the chemical injection claw 31 at the time of collision can be reduced to prevent damage. .

  Next, the drive configuration of the chemical liquid pump 36 will be described in detail. In the following, the leftmost chemical liquid pump 36 and its drive configuration will be described, but the drive configuration is the same for the drive configurations of the other chemical pumps 36.

  As shown in FIGS. 3 and 6, in the chemical liquid pump 36, the diaphragm 80 is sandwiched and fixed from above and below by a valve mounting member 80 a and a diaphragm mounting member 80 b, and the valve mounting member 80 a, of these, is placed in the diaphragm 80. A suction port 81 and a discharge port 82 that communicate with each other project upward, and the suction port 81 and the discharge port 82 are connected to a suction hose 43 and a discharge hose 44, respectively. The diaphragm mounting member 80 b is fixed to a pump support base 35 a that is fixed to the pump support stay 35. On the other hand, a connecting rod 83, which is a reciprocating body, is suspended from the lower center of the diaphragm 80. The lower portion of the connecting rod 83 is inserted into the pump support base 35a and the pump support stay 35, and the lower end of the connecting rod 83 is Via a pin support portion 83a, a connecting pin 84 is rotatably connected to a midway portion of the pump lever 85. A pump spring 86 is disposed between the pump support base 35a and the pin support portion 83a, and the pin support portion 83a is urged downward by the urging force thereof. The connecting pin 84 is provided with a cam follower 87.

  The front portion of the pump lever 85 is pivotally supported by lever shafts 88 that are horizontally mounted on both sides of the drive wheel support frame 33, and the pump lever 85 can be turned up and down with the lever shaft 88 as a fulcrum. On the other hand, the rear part of the pump lever 85 extends rearward.

  A cam 89 is fixed to the right end of the drive wheel shaft 38a, which is the rotation center of the drive wheel 38, and the drive wheel rotation shaft 37 is inserted through the drive wheel shaft 38a. In this manner, the cam follower 87 is always biased downward by the biasing force of the pump spring 86 so that the cam follower 87 can be brought into contact with the cam 89 in a biased state.

  In such a configuration, when the drive wheel 38 is driven while rolling on the soil, the cam 89 of the chemical pump 36 is rotationally driven via the drive wheel shaft 38 a, and the cam follower 87 in contact with the outer periphery of the cam 89 is moved up and down. The diaphragm 80 can be moved up and down via the pin support portion 83a and the connecting rod 83, and the reciprocating drive of the diaphragm 80 sucks the chemical liquid from the chemical liquid tank 28 and pressure-feeds it to the chemical liquid nozzle 32 of the chemical liquid injection claw 31. can do.

  The cam 89 has four cam projections 89a formed at equal intervals on the outer periphery of the basic circle 89b. However, the number of cam convex portions 89a is not limited, and may be 3 or less or 5 or more, respectively.

  A lever handle 85a is formed at the rear end of the pump lever 85, and the chemical pump 36 can be driven manually by grasping the lever handle 85a and rotating the pump lever 85 in the vertical direction.

  Thereby, it is possible to individually operate the chemical pumps 36 without rotating the drive wheels 38 serving as a drive source, and it is possible to release air manually before or during the work. As a result, as in the present embodiment, even when a plurality of chemical liquid pumps 36 are configured to be capable of parallel operation, only the chemical liquid pumps 36 that require air bleeding can be operated. In other words, it is not necessary to rotate the driving wheels 38 and operate all the chemical pumps 36 simultaneously when releasing air, and wasteful consumption of chemical liquids can be prevented.

  In addition, a restriction plate 90 is provided horizontally below the rear portion of the pump lever 85, and an adjustment rod 91 is screwed up and down in a substantially central portion in the left-right direction of the restriction plate 90. The adjustment rod 91 supports the driving wheel. It is provided so as to penetrate the upper and lower surfaces of the restriction plate mounting member 92 that is fixed in the rear part of the frame 33 and is U-shaped in side view.

  A lock nut 91a and a tightening nut 91b are screwed up and down at the lower part of the adjustment rod 91. On the other hand, the upper portion of the adjustment rod 91 is locked to the upper surface of the restriction plate mounting member 92, and a handle 93 is provided at the upper end of the adjustment rod 91, between the handle 93 and the upper surface of the restriction plate mounting member 92. A spring 94 is fitted on the outer periphery of the adjusting rod 91, and the adjusting rod 91 can always be biased upward by the biasing force of the spring 94.

  Further, adjustment bolts 95 and 95 are screwed into both the left and right sides of the limiting plate 90 so that a protrusion 85b formed on the lever handle 85a can abut on the upper end of the adjustment bolt 95. A lock nut 95 a is screwed into a portion of the adjustment bolt 95 immediately below the restriction plate 90.

  A scale plate 96 is attached to the rear surface of the limiting plate attachment member 92, and an opening 92 a that is long in the vertical direction is formed along the scale of the scale plate 96 at a substantially central portion of the scale plate 96 in the rear view. A not-shown mark for matching the scale of the scale plate 96 is formed in the center of the limit plate 90 in the rear view.

  In such a configuration, when the handle 93 is grasped and the adjustment rod 91 is rotated in a predetermined direction to move the restriction plate 90 upward, the pump lever 85 is moved upward via the adjustment bolt 95 with the lever shaft 88 as a fulcrum. And the bottom dead center of the chemical pump 36 also moves upward. Thereby, a stroke becomes short and the chemical injection amount of the chemical pump 36 can be reduced.

  On the other hand, when the adjusting rod 91 is rotated in the direction opposite to the predetermined direction by grasping the handle 93 and moving the limiting plate 90 downward, the pump lever 85 uses the lever shaft 88 as a fulcrum, And the bottom dead center of the chemical pump 36 moves downward. Thereby, a stroke becomes long and the chemical injection amount of the chemical pump 36 can be increased. In other words, by adjusting the vertical position of the limiting plate 90, the amount of the chemical solution injected can be freely changed.

  Thus, the vertical position of the pump lever 85 set by the adjusting rod 91 can be further finely adjusted by rotating the adjusting bolt 95, whereby individual chemical solutions resulting from the individual characteristics of the diaphragm 80. The difference in the amount of chemical solution injected from the pump 36 is eliminated.

  Furthermore, by tightening the lock nut 91a and the tightening nut 91b, the adjustment rod 91 is fixed so as not to rotate while the limit plate 90 is moved to a predetermined vertical position, and the lock nut 95a is tightened. Thus, the adjustment bolt 95 can be fixed so as not to rotate in a state where the vertical position of the pump lever 85 is adjusted, and the set chemical solution injection amount of the chemical solution pump 36 is not changed. In addition, although the soil disinfector 1 according to the present embodiment is configured to operate the chemical pump 36 by rotationally driving the driving wheel 38, the configuration may be configured to operate the chemical pump 36 by the driving force of the motor. .

  Next, the configuration of the flat plate 55 and the distribution unit 100 according to the first embodiment will be described in detail.

  As shown in FIG. 7, the upper end portion of the flat plate 55 is bent toward the rear, and the lower end portion is bent toward the front. A pair of left and right mounting holes 55b and 55b for inserting fasteners such as bolts are formed in the vicinity of the central portion of the flat plate 55 in the left-right direction.

  The distribution unit 100 is configured by a distribution member 110 formed by bending a plate-like member at the left and right central portions, and the distribution member 110 has a lateral width that decreases from rear to front in plan view. Moreover, it is configured in a sharp shape such that the height decreases from the rear toward the front in a side view. In this manner, the distribution member 110 is formed as a member having a pair of left and right left side surfaces 111 and right side surfaces 112. In addition, mounting portions 111a and 112a are formed at the rear ends of the left side surface 111 and the right side surface 112 of the distribution member 110 so as to be parallel to the flat plate 55, respectively. Mounting holes 111b and 112b for inserting fasteners are respectively formed.

  Then, with the distribution member 110 in contact with the front side surface of the flat plate 55 such that the mounting holes 55b and 55b of the flat plate 55 and the mounting holes 111b and 112b of the distribution member 110 overlap, The distribution member 110 is attached to the flat plate 55 by the fasteners.

  When the distribution member 110 is attached to the flat plate 55, the distribution member 110 is configured to be positioned at the center in the left-right direction of the flat plate 55. Further, the height of the lower end of the distribution member 110 is configured to be higher than the height of the lower end of the flat plate 55 (see H in FIG. 8A), and the horizontal width of the distribution member 110 is It is comprised so that it may become substantially the same as the width | variety between rear-wheels 9 * 9.

  In such a configuration, as shown in FIG. 8, when the soil disinfector 1 is pulled by the tractor 2, the rear wheels 9 and 9 of the tractor 2 move while stepping on the soil, so that the soil is rear wheels 9 and 9. To the left and right of the rear wheels 9, 9 Since the portion of the soil through which the rear wheels 9 and 9 have passed is soiled by the rear wheels 9 and 9, groove-shaped ridges 131 and 131 are formed. The soil of the ridges 131 and 131 part that has been squeezed by the rear wheels 9 and 9 is dug back by the left and right subsoilers 30 and 30 to become soft soil again, but between this left and right subsoilers 30 and 30, A close soil portion 130 in a state where the soil is gathered and piled up is formed.

  In the rear of the tractor 2, the distribution member 110 distributes the soil forming the close soil portion 130 in the left-right direction while breaking down the close soil portion 130 by the front end portion thereof, and also distributes a predetermined amount of soil from below to the rear direction. And let it pass. The soil distributed in the left-right direction is guided by the distribution member 110 and flows into the left and right ridges 131, and the ridges 131 are filled with the soil. Thereafter, the soil distributed in the left-right direction and the soil passed from the lower side of the distribution member 110 to the rear side are leveled by the lower end of the leveling plate 55. Here, the predetermined amount is an amount such that the soil can be distributed to the entire left and right width of the flat plate 55 by the soil distributed in the left-right direction and the soil distributed backward through the lower part of the distribution member 110.

  As described above, first, the soil forming the close soil portion 130 is distributed while being crushed by the distribution member 110, and then the soil can be leveled more evenly by the leveling plate 55. In addition, by allowing the soil forming the close soil portion 130 to flow into the ridge 131 by the distribution member 110, the soil can be effectively moved from a place where the amount of soil is large (the close soil portion 130) to a place where the soil is small (the ridge 131). Can be distributed. Thereby, compared with the case where the soil is leveled only with the leveling plate 55, the straw 131 can be effectively eliminated and the field can be leveled more evenly. Further, depending on the field conditions (such as the amount of water contained in the soil), the straw 131 can be eliminated by using only the distribution member 110 and the flat plate 55 without using the subsoilers 30 and 30.

  Further, since a predetermined amount of soil can be passed backward from below the distribution member 110, the soil can be distributed not only to the left and right portions of the leveling plate 55 but also to the central portion. Thereby, the soil can be distributed over the entire lateral width of the flat plate 55, and the field can be leveled more evenly. Furthermore, the height of the lower end of the distribution member 110 is higher than the height of the lower end of the flat plate 55 and is attached to the flat plate 55, so that unnecessary grooves are not formed by the distribution member 110 and the field is more even. Can be leveled.

  Moreover, since the lower end of the leveling plate 55 is bent forward, it can be expanded effectively in the left-right direction while crawling the soil, and the field can be leveled more evenly. Further, since the leveling plate 55 is biased downward by the spring 58, the field can be leveled while following the field scene. In addition, when a certain load is applied to the leveling plate 55 and the distribution member 110 during leveling of the field, the leveling plate 55 and the distribution member 110 rotate backward against the urging force of the spring 58. To do. Accordingly, it is possible to prevent the leveling plate 55 and the distribution member 110 from being deformed by holding a large amount of soil and the tractor 2 from slipping. Furthermore, by changing the attachment position of the spring 58 or changing the type of the spring 58, the urging force against the flat plate 55 can be adjusted according to the unevenness or hardness of the soil.

  In addition, in this embodiment, although it was set as the structure which passes soil back from the downward direction of the distribution member 110, it does not restrict to this. For example, it is possible to form a notch for allowing the soil to pass through in the left and right central portions of the distribution member 110 and to pass the soil backward through the notch. In this case, it is desirable that the notch be formed in a width or shape that allows a predetermined amount of soil to pass smoothly in the backward direction.

  Below, the structure of the flat plate 255 and the distribution part 200 which concern on 2nd embodiment is demonstrated.

  As shown in FIG. 9, the distribution unit 200 includes a left side plate 211 and a right side plate 212 that are substantially triangular plate materials. A mounting portion 211a is formed at the rear end of the left side plate 211 so as to be parallel to the flat plate 255, and mounting holes 211b and 211b for inserting fasteners such as bolts are formed in the mounting portion 211a. The The shape of the right side plate 212 is formed so as to be symmetrical with the shape of the left side plate 211. A mounting portion 212a is formed at the rear end of the right side plate 212, and mounting holes 212b and 212b are formed in the mounting portion 212a. The left side plate 211 and the right side plate 212 are attached to the flat plate 255 with fasteners such as bolts and nuts with their sides 211c and 212c in contact with each other. The distribution unit 200 attached to the flat plate 255 is configured to be positioned at the center in the left-right direction of the flat plate 255. Further, the height of the lower end of the distribution unit 200 is configured to be higher than the height of the lower end of the flat plate 255, and the horizontal width of the distribution unit 200 is the width between the rear wheels 9, 9 of the tractor 2. It is comprised so that it may become substantially the same.

  The flat plate 255 is provided with mounting holes 255b, 255b,... For inserting fasteners for fastening the distributor 200. Further, another mounting hole 255c / 255c / so that it can be attached to the flat plate 255 in a state where the angle formed by the left side plate 211 and the right side plate 212 is changed (in the present embodiment, the angle formed is large).・ ・ Is also drilled.

  In such a configuration, as shown in FIG. 10A, in the rear of the tractor 2, the distribution member 110 divides the soil forming the close soil portion 130 in the left-right direction while breaking the close soil portion 130 by the front end portion thereof. And a predetermined amount of soil is passed from the lower side to the rear side. The soil distributed in the left-right direction is guided by the distribution member 110 and flows into the left and right ridges 131, and the ridges 131 are filled with the soil. Thereafter, the soil distributed in the left-right direction and the soil that has passed from the lower side to the rear side of the distribution member 110 are leveled by the lower end of the leveling plate 255.

  Further, as shown in FIG. 9, by changing the mounting holes 255b, 255b... To which the left side plate 211 and the right side plate 212 are attached to the mounting holes 255c, 255c. Can be increased from Ws to WL (see FIG. 10). Thereby, even when the soil disinfecting machine 1 is mounted on the tractor 2 where the distance between the left and right rear wheels 9, 9 is wide, the soil forming the close soil portion 130 can be surely flowed into the fence 131. it can. In this way, by adjusting the lateral width of the distribution unit 200 according to the distance between the rear wheels 9, 9 of the tractor 2 to which the soil disinfector 1 is mounted, the distance between the rear wheels 9, 9 is different. Even if it is 2, soil can be poured into the ridge 131 and the field can be leveled.

  In the present embodiment, two types of mounting holes are formed in the leveling plate 255, but more mounting holes can be drilled to further adjust the lateral width of the distribution portion. It can also be set as a simple structure. Furthermore, it is also possible to replace the left side plate 211 and the right side plate 212 with different shapes according to the distance between the rear wheels 9, 9 and the state of the field.

  Further, the left side plate 211 and the right side plate 212 according to the present embodiment are formed of a material having a strength or a thickness that does not bend or deform due to the resistance of soil, but is reinforced with other plate materials or the like. Thus, it is possible to prevent the bending and deformation.

  In addition, the left side plate 211 and the right side plate 212 according to the present embodiment may be connected by a hinge. This facilitates adjustment of the angle between the left side plate 211 and the right side plate 212. Further, when the left side plate 211 and the right side plate 212 are removed from the flat plate 255, the left side plate 211 and the right side plate 212 are integrally connected, so that they can be easily carried and stored.

  Below, the structure of the flat plate 55 and the distribution part 300 which concern on 3rd embodiment is demonstrated.

  As shown in FIG. 11, the distribution unit 300 includes a distribution member 310 formed by bending a plate-like member at the left and right central portions, and a left protruding plate 320 and a right protruding plate 330 that are substantially triangular plate materials. Is done. The distribution member 310 has mounting holes 111d, 111d,... And mounting holes for fastening the left protruding plate 320 and the right protruding plate 330 to the left side surface 111 and the right side surface 112 of the distribution member 110 according to the first embodiment, respectively. 112d, 112d,...

  A long hole 321 and a long hole 331 are formed in the left protruding plate 320 and the right protruding plate 330, respectively. The elongated holes 321 and 331 of the left protruding plate 320 and the right protruding plate 330 overlap with the mounting holes 111d and 111d... And the mounting holes 112d and 112d of the left side surface 111 and the right side surface 112 of the distribution member 310, respectively. The left projecting plate 320 and the right projecting plate 330 are attached to the distribution member 310 with fasteners such as bolts and nuts in the contacted state.

  Three attachment holes 111d, 111d,... Are formed in the left side surface 111 of the distribution member 310, and the attachment holes 111d, 111d,. Further, the long hole 321 formed in the left protruding plate 320 is formed to have a shape along the same circumference as the mounting holes 111d, 111d,... Drilled in the left side surface 111 of the distribution member 310. Similarly to the left side surface 111, the right side surface 112 of the distribution member 310 has three mounting holes 112d, 112d,... Arranged on the same circumference, and the long hole 331 formed in the right protruding plate 330 also has a right side. It is formed to have a shape along the same circumference as the mounting holes 112d, 112d,.

  In such a configuration, as shown in FIG. 11A, the long hole 321 of the left protruding plate 320 overlaps the upper two mounting holes 111d and 111d of the mounting holes 111d and 111d. When attached to the distribution member 310 while being in contact with the left side, the left protruding plate 320 does not protrude downward from the left side surface 111 of the distribution member 310. Similarly, the right protruding plate 330 is in contact with the long holes 331 of the right protruding plate 330 so as to overlap the upper two mounting holes 112d and 112d of the mounting holes 112d and 112d. When attached to the distribution member 310, the right protruding plate 330 does not protrude downward from the right side surface 112 of the distribution member 310.

  In this state, when the soil disinfector 1 is pulled by the tractor 2, the leveling plate 55 and the distribution unit 300 can level the field equally as in the first embodiment.

  As shown in FIG. 11 (b), the long hole 321 of the left protruding plate 320 is brought into contact with the lower two mounting holes 111 d and 111 d of the mounting holes 111 d and 111 d. When attached to the distribution member 310 in a state, the front vertex 322 of the left protruding plate 320 protrudes downward from a part of the lower end of the left side surface 111 along the left side surface 111 of the distribution member 310. . Similarly, the right protruding plate 330 is in contact with the long holes 331 of the right protruding plate 330 so as to overlap the two lower mounting holes 112d and 112d of the mounting holes 112d and 112d. When attached to the distribution member 310, the front apex portion 332 of the right protruding plate 330 protrudes downward from a part of the lower end of the right side surface 112 along the right side surface 112 of the distribution member 310.

  In this state, when the soil disinfector 1 is pulled by the tractor 2, the distribution member 310 forms the close soil portion 130 while breaking the close soil portion 130 by the front end portion behind the tractor 2. While distributing the soil in the left-right direction, a predetermined amount of soil is passed from the lower side to the rear side. Further, the top portion 322 and 332 of the left protruding plate 320 and the right protruding plate 330 distribute the soil forming the close soil portion 130 in the left-right direction. Thus, the amount of soil distributed to the left and right can be increased by increasing the area in contact with the soil as compared with the case of the distribution member 310 alone. Thereby, when the ridge 131 is deep, the soil flowing into the ridge 131 can be increased, and the ridge 131 can be buried more effectively, and as a result, the field can be leveled more evenly. Further, by adjusting the attachment angle of the left protruding plate 320 and the right protruding plate 330 according to the distance between the rear wheels 9, 9, the brim 131 can be filled more effectively.

  Further, the left projecting plate 320 and the right projecting plate 330 are attached to the distribution member 310 by the long holes 321 and 331, so that the mounting angle of the left projecting plate 320 and the right projecting plate 330 is set to the length of the long holes 321 and 331. You can also fine-tune the range. This makes it possible to finely adjust the amount of soil distributed to the left and right according to the field conditions such as the soil wetness and the depth of the ridge 131. It is also possible to change the adjustable range of the mounting angle of the left protruding plate 320 and the right protruding plate 330 by increasing or decreasing the number of mounting holes 111d and 112d of the distribution member.

  Even if the left protruding plate 320 and the right protruding plate 330 protrude downward to distribute the soil to the entire left and right width of the flat plate 55, not only from the left and right of the distribution member 310 but also from below. It is desirable that a predetermined amount of soil be passed in the backward direction. Moreover, the change method of the shape and attachment position of the left protrusion board 320 and the right protrusion board 330 is not limited to this embodiment, What is necessary is just a structure which can change the area which touches soil.

  Below, the structure of the flat plate 455 and the distribution part 100 which concern on 4th embodiment is demonstrated.

  As shown in FIG. 12, the distribution part 100 is comprised by the distribution member 110 formed by bending a plate-shaped member in the left-right center part similarly to 1st embodiment. Mounting holes 455b, 455b and mounting holes 455c, 455c,... For inserting fasteners such as bolts are formed in the vicinity of the center portion of the leveling plate 455 in the left-right direction and in the vicinity of both left and right ends.

  A pair of left and right left auxiliary plates 410 and right auxiliary plate 420 are attached to the flat plate 455. The left auxiliary plate 410 is a substantially triangular plate member, and a mounting portion 411 is formed at the rear end thereof so as to be parallel to the flat plate 455, and a bolt or other fastener is inserted through the mounting portion. Mounting holes 412 and 412 are formed. With the attachment holes 412 and 412 of the left auxiliary plate 410 and the attachment holes 455c and 455c in the vicinity of the left end portion of the flat plate 455 in contact with each other, the left auxiliary plate is fastened by a fastener such as a bolt or nut. 410 is attached to the flat plate 455. When the left auxiliary plate 410 is attached to the flat plate 455, the front end portion of the left auxiliary plate 410 extends toward the left front. Further, the right end portion of the left auxiliary plate 410 is disposed so as to be located behind the left rear wheel 9 of the tractor 2.

  The right auxiliary plate 420 is a substantially triangular plate material, and a mounting portion 421 is formed at the rear end thereof so as to be parallel to the flat plate 455, and a fastener such as a bolt is inserted through the mounting portion 421. Mounting holes 422 and 422 are formed. With the mounting holes 422 and 422 of the right auxiliary plate 420 and the mounting holes 455c and 455c in the vicinity of the right end of the flat plate 455 in contact with each other, the right auxiliary plate is fastened by a fastener such as a bolt or nut. 420 is attached to the flat plate 455. When the right auxiliary plate 420 is attached to the flat plate 455, the front end portion of the right auxiliary plate 420 extends toward the front right. Further, the left end portion of the right auxiliary plate 420 is disposed so as to be located behind the right rear wheel 9 of the tractor 2.

  In such a configuration, as shown in FIG. 13, at the rear of the tractor 2, the distribution member 110 distributes the soil forming the close soil portion 130 in the left-right direction while breaking the close soil portion 130 by the front end portion thereof. In addition, a predetermined amount of soil is passed from the lower side to the rear side. The soil distributed in the left-right direction is guided by the distribution member 110 and flows into the left and right ridges 131, and the ridges 131 are filled with the soil.

  Further, the left soil of the ridge 131 formed by the left rear wheel 9 is guided by the left auxiliary plate 410 so as to flow into the ridge 131. Further, the right soil of the ridge 131 formed by the right rear wheel 9 is guided by the right auxiliary plate 420 to flow into the ridge 131. Thereafter, the soil distributed in the left-right direction and the soil that has passed from the lower side to the rear side of the distribution unit are leveled by the lower end of the flat plate 455.

  By arranging the left auxiliary plate 410 and the right auxiliary plate 420 as described above, the soil can be guided from both ends of the flat plate 455 to the inside thereof, and the soil is prevented from flowing out of the flat plate 455. The farm can be surely leveled by the leveling plate 455. Moreover, the soil outside the ridge 131 can be made to flow into the ridge 131, and the soil can be made to flow into the ridge 131 more effectively. Thereby, when the soil outside the ridge 131 is raised, or when the soil is uneven on the outside of the ridge 131, the field can be leveled more evenly.

  Note that the left auxiliary plate 410 and the right auxiliary plate 420 according to the present embodiment are formed of a material having a strength or a thickness that does not bend or deform due to the resistance of the soil, It is also possible to adopt a configuration that reinforces and prevents bending and deformation.

  Next, a method for connecting the soil disinfector 1 to the tractor 2 will be described. 15 to 19, illustration of members such as the subsoiler 30 and the chemical liquid injection claw 31 and fasteners such as bolts and nuts are omitted as appropriate for convenience of explanation.

  As shown in FIG. 14, the soil disinfector 1 is supported by a stand 150 when not connected to the tractor 2. The stand 150 includes a stand frame 151 erected in the vertical direction and a stand frame base portion 152 that supports a lower portion of the stand frame 151. Hereinafter, only the stand 150 connected to the left part of the soil disinfector 1 will be described, but the stand 150 having the same configuration is also connected to the right part.

  The stand frame 151 is formed of a pipe material. In the vicinity of the upper end portion thereof, two upper mounting holes 151a and 151a penetrating the stand frame 151 in the left-right direction are formed side by side, and in the vicinity of the lower end portion thereof. The two lower mounting holes 151b and 151b penetrating the stand frame 151 in the left-right direction are formed side by side.

  The stand frame base portion 152 is formed of a pipe material horizontally provided in the front-rear direction, and a pair of connecting plates 153 and 153 are fixedly provided in the front-rear halfway portion. In the vicinity of the upper ends of the connecting plates 153 and 153, one upper mounting hole 153a that penetrates the connecting plates 153 and 153 to the left and right is formed. In the vicinity of the lower end portion of the connecting plates 153 and 153, there are one first lower mounting hole 153b and a first lower mounting hole 153b that pass through the connecting plates 153 and 153 in the vertical direction below the upper mounting hole 153a. In the rear, one second lower mounting hole 153c that penetrates the connecting plates 153 and 153 from side to side is formed side by side. In addition, wheels 152 a and 152 a are fixed to the lower portions of the front and rear ends of the stand frame base portion 152.

  The lower part of the stand frame 151 is inserted between the connecting plates 153 and 153 of the stand frame base 152, and the two lower mounting holes 151b and 151b of the stand frame 151, the upper mounting hole 153a of the stand frame base 152, and the first lower part The mounting holes 153b are overlapped with each other with bolts 154, nuts 155, and the like. Further, the upper portion of the stand frame 151 is inserted between the main frame 21L and the stand attachment portion 22 fixed to the middle portion of the main frame 21L, and an upper attachment hole 151a on the lower side of the stand frame 151 In the state where the mounting holes 22a drilled in the stand mounting portion 22 are overlapped, they are connected by inserting pins 156 into the upper mounting holes 151a and the mounting holes 22a.

  As shown in FIG. 15, the height of the soil disinfector 1 can be kept low by connecting the stand 150 to the main frame 21 </ b> L using the lower upper mounting hole 151 a of the stand frame 151. Thereby, space saving at the time of transportation and storage of the soil disinfecting machine 1 can be achieved.

  When connecting the soil disinfector 1 to the quick frame 6 of the tractor 2, as shown in FIG. 16, first, the stand 150 is connected to the main frame 21L using the upper mounting hole 151a on the upper side of the stand frame 151. Thereby, the soil disinfector 1 can be supported at a high position.

  Next, as shown in FIG. 17, the bolts 154 and nuts 155 fastened to the first lower mounting holes 153b of the stand frame base 152 are removed, the stand frame 151 is inclined forward, and the lower side of the stand frame 151 is lowered. The lower mounting hole 151b is fastened with a bolt 154, a nut 155, or the like in a state where the lower mounting hole 151b is overlapped with the second lower mounting hole 153c of the stand frame base 152. As a result, the soil disinfecting machine 1 is supported by the stand 150 in a state where it is inclined forward.

  Next, as shown in FIG. 18, the upper notch 7 a of the quick frame 6 included in the lifting mechanism 3 is positioned below the connecting pin 13 a that is laid on the top link mast 13 of the soil disinfector 1. Next, the soil disinfecting machine 1 is moved. In addition, the operation | work which aligns this position can also be performed by moving the tractor 2 other than moving the soil disinfector 1. FIG.

  Finally, as shown in FIG. 19, the lifting mechanism 3 is raised to lock the connecting pin 13a in the upper notch 7a, and the lifting mechanism 3 is further lifted to lower the quick notch lower notch. The connecting pin 11a is locked to the portion 8a. Thereafter, when work is performed, the stand 150 is removed. Thus, when the tractor 2 equipped with the quick frame 6 is used, the soil disinfector 1 can be easily inclined by simply tilting the soil disinfector 1 forward, aligning the quick frame 6 and raising the lifting mechanism 3. 1 can be attached to the tractor 2.

1 Soil disinfector 2 Tractor (towing vehicle)
6 Quick frame 10 Mounting portion 20 Chemical solution injection portion 50 Soil leveling portion 55 Level flat plate 100 Distribution portion 110 Distribution member 150 Stand 200 Distribution portion 255 Level plate 300 Distribution portion 310 Distribution member 320 Left protruding plate 330 Right protruding plate 410 Left auxiliary plate 420 right auxiliary plate 455 flat plate

Claims (2)

A soil disinfector that is towed by a towing vehicle and injects chemicals into the field,
A flat plate arranged behind the towing vehicle and leveling the surface of the field after the chemical solution is injected, and arranged on the front side surface of the flat plate, distributing the soil left and right, and a predetermined amount of soil A distribution section that passes backward,
The distribution unit includes a distribution member;
The distribution member is formed in a sharp shape that decreases in width from the rear toward the front, and is arranged at a position where the height of the lower end is higher than the lower end of the flat plate,
Furthermore, in order to be able to change the horizontal width,
A soil disinfecting machine provided with a projecting plate capable of projecting downward from the lower end of the side surface along a pair of left and right side surfaces of the distribution member . The soil disinfector according to claim 1, further comprising an auxiliary plate disposed at both ends of the front side surface of the flat plate and guiding the soil to the inside of the flat plate .

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