Mobile agricultural machine with fertilizer applicator

Abstract

To provide a mobile agricultural machine with a fertilizer applicator capable of stably and surely scattering a granular fertilizer not only on a conventional shallow layer but also on a deep layer.SOLUTION: A fertilizer applicator 20 includes: a fertilizer hopper 22 for storing a granular fertilizer; a plurality of shallow side furrows 40 for forming furrows for spreading the granular fertilizer from the fertilizer hopper on a surface layer; deep furrows 30 for forming furrows for spreading the granular fertilizer on deep layers between the furrows; a fertilizing hose 24 for supplying the granular fertilizer to the shallow side furrows; and a lower hose 26 connected to the fertilizing hose so as to divert a part of the granular fertilizer passing through the fertilizing hose and send it to the deep furrows. The fertilizer applicator is composed of: a plurality of deep inter-row furrows 30A configured to spread the granular fertilizer for two rows on the deep inter-row layer; and an outer end deep inter-row furrow 30B configured to spread the granular fertilizer for one or two rows on both sides of a leveling float in a width direction of the agricultural machine.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a mobile agricultural machine equipped with a fertilizer applicator that is capable of spreading granular fertilizer deep between rows. [Background technology]

[0002] Patent Document 1 discloses a fertilization device provided with a fertilization nozzle for side stripe application that applies paste fertilizer to shallow positions and a fertilization nozzle for deep layer application that applies paste fertilizer to deeper positions.

[0003] Paste fertilizers are notoriously expensive, and granular fertilizers applied to the surface are only effective for the initial growth stage. Although slow-release granular coatings could be used, this could lead to environmental problems with microplastics. Therefore, deep application of uncoated granular fertilizers is expected.

[0004] The fertilizer nozzle for deep fertilization described in Patent Document 1 penetrates below the surface of the field to spread paste fertilizer, and it is possible to use it for granular fertilizer. However, there is a problem that it cannot be used in this application because the nozzle diameter must be large to spread granular fertilizer and a configuration is required to push out the granular fertilizer against the pressure of the muddy water applied to the nozzle tip.

[0005] It is also possible to provide a furrow in front of the fertilizer nozzle for deep layer application and drop granular fertilizer into the furrow formed as the nozzle moves forward, but in the invention described in Patent Document 1, a ground leveling float is provided above the fertilizer nozzle for deep layer application, so even if a furrow is provided immediately before this fertilizer nozzle for deep layer application, the formed furrow will be immediately closed by mud pushed by the ground leveling float, and there is also the problem that the nozzle will become clogged with mud, making it impossible to drop the granular fertilizer into it.

[0006] Furthermore, Patent Document 2 discloses a rice transplanter in which granular fertilizer is introduced into a circular rotor provided with grooves for burying the fertilizer, and then released into the muddy soil when the lower end of the rotor descends below the field surface.

[0007] A problem with this rice transplanter is that it is not possible to push the granular fertilizer in the trench into the mud. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 9-294439 [Patent Document 2] Japanese Utility Model Application Publication No. 51-122011 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention aims to provide a mobile agricultural machine with a fertilizer applicator that can stably and reliably spread granular fertilizer in the deep layer between rows. Another objective of the present invention is to provide a mobile agricultural machine with a fertilizer applicator that can receive debris that remains in the deep layer furrows between rows at the outer ends of the fertilizer applicator and debris that is about to become entangled in the shallow layer furrows at the side rows. [Means for solving the problem]

[0010] The present invention relates to a mobile agricultural machine with a fertilizer applicator that spreads granular fertilizer, the mobile agricultural machine having left and right front and rear wheels that are rotatable in a forward direction while in contact with the surface of a field and that are arranged in parallel in a width direction perpendicular to the forward direction, a sensor float that is provided in a middle position in the agricultural machine width direction between the pair of left and right rear wheels and at a position rearward of the rear wheels, and a plurality of ground leveling floats that are arranged on both sides of the sensor float in the agricultural machine width direction, the fertilizer applicator comprising a fertilizer applicator hopper that stores the granular fertilizer, a plurality of side row shallow layer furrows for forming furrows in the side rows of each planting position for dropping the granular fertilizer near the surface of the field, a plurality of deep layer furrows for forming furrows between the rows for dropping the granular fertilizer at positions deeper than the furrows formed by the side row shallow layer furrows, and a plurality of fertilizer applicators for forming a furrow for dropping the granular fertilizer between the rows. The above problem is solved by a mobile agricultural machine with a fertilizer applicator, which comprises a fertilizer hose that supplies granular fertilizer from a machine hopper above the side row shallow layer furrow, and a lower hose connected to the fertilizer hose so as to divert a portion of the granular fertilizer passing through the fertilizer hose and send it to the deep layer furrow, and the deep layer furrow is composed of a plurality of inter-row deep layer furrows that are connected to the tip of the lower hose at the middle position in the agricultural machine width direction of the sensor float and each of the ground leveling floats and are configured to spread granular fertilizer in the deep layer between the rows, and outer end inter-row deep layer furrows that are arranged on both sides of the ground leveling float in the agricultural machine width direction and are configured to spread one or two rows of granular fertilizer therein.

[0011] Here, the term "row spacing" refers to the space between rows of seedlings, etc. planted by agricultural machinery in the direction of its movement, and also includes the space between an already planted row of seedlings, etc. and the adjacent row to which the next seedlings will be planted.

[0012] The present invention also provides a fertilizer applicator comprising: a side-row shallow layer furrow on the outer side in the agricultural machine width direction among the plurality of side-row shallow layer furrows provided outside the outer end-row deep layer furrow; and a soil cover plate for covering the furrow with mud after spreading granular fertilizer in the furrow formed by the side-row shallow layer furrows; and an outer end leveling plate with a flow receiving function, which is integrally provided with an outer end leveling plate at an outer position on both sides in the fertilizer applicator width direction, and the oscillating shallow layer furrow and the oscillating soil cover plate are provided at both ends in the agricultural machine width direction of the fertilizer application range. The above problem is solved by a mobile agricultural machine with a fertilizer applicator, which is characterized in that the oscillating mechanism is configured to support the oscillating shallow layer furrow work and the oscillating soil cover plate so that they can be oscillated up and down in conjunction with the planting depth in the same manner as a float, and the oscillating shallow layer furrow work and the oscillating soil cover plate maintain their functions as shallow layer furrow work and soil cover plate while ensuring a sufficient distance from the deep layer furrow work, thereby allowing impurities remaining in the deep layer furrow between the outer end rows to be diverted rearward. Effect of the Invention

[0013] According to the present invention, the soil leveling float has deep inter-row furrows on both sides in the width direction, which are configured to spread granular fertilizer in the deep layer between the rows. Therefore, while the mobile agricultural machine is moving forward, the furrows formed by the deep inter-row furrow furrows are not immediately filled in by the rear soil leveling float while the fertilizer is falling, so that the granular fertilizer can be dropped stably into the furrows.

[0014] In addition, according to the present invention, the oscillating shallow layer furrowing and the oscillating soil cover plate maintain their functions as shallow layer furrowing and soil cover plates, while ensuring a sufficient distance from the deep layer furrowing, thereby having the effect of accommodating debris that tends to become entangled in the outer end strip deep layer furrowing and side strip shallow layer furrowing to the rear. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a side view showing a mobile agricultural machine with a fertilizer applicator according to an embodiment of the present invention; [Diagram 2] Bottom view taken along line II-II in Figure 1 [Diagram 3] Plan view taken along line III-III in Figure 1 [Figure 4] Rear view taken along line IV-IV in Figure 1 [Diagram 5] FIG. 3 is a front view of the fertilizer applicator according to the embodiment; [Figure 6] FIG. 2 is a perspective view showing a deep inter-row furrow in the fertilizer applicator according to the embodiment. [Figure 7] FIG. 2 is a bottom view showing a schematic diagram of the positional relationship of the main parts of the fertilizer applicator according to the embodiment in the width direction and the front-rear direction of the agricultural machine. [Figure 8] FIG. 2 is a perspective view showing the inter-row deep layer furrows at both ends in the width direction of the fertilizer applicator according to the embodiment and related parts. [Figure 9] FIG. 11 is a perspective view showing a main part of a mobile agricultural machine according to a second embodiment. [Figure 10] FIG. 10 is a perspective view showing a main part of the mobile agricultural machine according to the second embodiment as viewed from the X direction in FIG. [Figure 11] FIG. 2 is a bottom view showing the main parts of the mobile agricultural machine as viewed from below. [Figure 12] XII-XII line view in Fig. 10 [Figure 13] FIG. 11 is a front view of the main part of the mobile agricultural machine shown in FIG. 10 as viewed from the front in the direction of travel. [Figure 14] FIG. 11 is a side view showing details of a receiving mechanism of a mobile agricultural machine according to a second embodiment. [Figure 15] FIG. 4 is a perspective view of the receiving mechanism seen from below. [Figure 16] FIG. 11 is a perspective view showing a leveller in the receiving mechanism. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, the mobile agricultural machine is a rice transplanter, but the present invention is not limited to the rice transplanter.

[0017] [Example 1] As shown in Figures 1 to 5, a mobile agricultural machine with a fertilizer applicator 10 according to a first embodiment of the present invention has a fertilizer applicator 20 for spreading granular fertilizer, which includes left and right front wheels 12 and rear wheels 14 arranged in parallel in a width direction perpendicular to the forward direction and capable of rotating in a forward direction while in contact with the surface of a farm field, a pair of left and right first auxiliary wheels 15A and second auxiliary wheels 15B arranged adjacent to the inside and outside of the width direction of the left and right rear wheels 14 and capable of rotating integrally with the rear wheels 14, ground leveling floats 16A and 16B arranged at rear positions of the left and right rear wheels 14, and a sensor float 16C arranged between these ground leveling floats 16A and 16B. Reference numeral 44 in Figure 1 denotes a seedling carrier.

[0018] The fertilizer applicator 20 also has a fertilizer applicator hopper 22 for storing granular fertilizer, a plurality of side row shallow layer furrows 40 for forming furrows for dropping granular fertilizer into the side row positions near the surface of the field, and a plurality of deep layer furrows 30 for forming furrows between the rows at positions deeper than the furrows formed by the side row shallow layer furrows 40 for dropping granular fertilizer into the furrows.

[0019] 1, the fertilizer applicator 20 is equipped with a fertilizer hose 24 that supplies granular fertilizer from the fertilizer applicator hopper 22 to the side-row shallow layer furrow 40. The fertilizer hose 24 is composed of a shallow layer side-row fertilizer hose 25, a deep layer inter-row fertilizer hose 25A that diverts a portion of the granular fertilizer, and a lower hose 26 that is connected to the deep layer inter-row fertilizer hose 25A and sends the granular fertilizer to the deep layer furrow 30.

[0020] As shown in FIG. 4, the shallow layer side stripe fertilizer application hose 25 is provided with a diversion pipe 43 that diverts the granular fertilizer to two shallow layer side stripe trenches 40.

[0021] The deep layer groove making 30 is composed of an inter-row deep layer groove making 30A and an outer end inter-row deep layer groove making 30B.

[0022] The inter-row deep layer furrowing 30A is located at the midpoint in the widthwise direction of the agricultural machine between the leveling floats 16A, 16B and the sensor float 16C in a plan view, and is connected to the end of the lower hose 26, and is configured to spread two rows of granular fertilizer in the deep layer between the rows.

[0023] In addition, the outer end row-to-row deep layer furrow 30B is connected to the tip of the lower hose 26 at a position further outward in the width direction of the agricultural machine than the ground leveling floats 16A, 16B at both outer positions in the width direction of the agricultural machine, and is configured to spread one row of granular fertilizer on the widthwise outer side of the ground leveling floats 16A, 16B.

[0024] As shown in Figure 6, the inter-row deep furrow cutting 30A is capable of adjusting the height at which granular fertilizer is spread depending on how the mud is pushed, and is provided with an angle of attack above the furrow cutting (described in detail later).It has a furrow cutting leveling plate 31 which presses down the overflow portion that rises higher than the top surface of the mud in the field when moving forward, thereby leveling the ground.

[0025] The deep inter-row trench cutting tool 30A has an upper end surface 32A and a lower end surface 32B which are open, and in horizontal cross section, has a trench cutting body 32 consisting of a V-shaped semi-cylinder with a convex front end, and this trench cutting body 32 has an upper end surface 32A and a lower end surface 32B which are formed with angles of attack α1 and α2 above the trench cutting tool, and is configured so that the upper end surface 32A is provided with the above-mentioned trench cutting leveling plate 31.

[0026] The groove making body 32 has a square cylindrical front cover portion 32C rising upward from its front end portion, and a vertical height adjustment plate 34 having a bolt insertion hole 34A is attached integrally to its rear end.

[0027] Opposite this height adjustment plate 34, on the frame 21 side of the fertilizer applicator 20, there is a bolt hole 21A parallel to the height adjustment plate 34, into which a mounting bolt 35 inserted through the bolt insertion hole 34A is screwed, so that the height adjustment plate 34 can be changed in the vertical position and fixed by the mounting bolt 35.

[0028] In detail, bolt holes 21A are provided on the frame 21 side in two left and right rows and at equal intervals in the vertical direction, and bolt insertion holes 34A, which are more than the number of bolts, are provided on the height adjustment plate 34 in two left and right rows, at equal pitch in the vertical direction, at positions overlapping with the bolt holes 21A, so that the height adjustment plate 34 and the groove making body 32 integrated with it can be positioned in the vertical direction relative to the bolt holes 21A on the frame 21 side and fixed by mounting bolts 35.

[0029] As shown in FIG. 8, the outer end inter-row deep layer groove 30B has substantially the same configuration as the inter-row deep layer groove 30A, so a description thereof will be omitted.

[0030] In addition, the fertilizer applicator 20 is provided with a furrow cutting straw mixing plate 33 on the front side of each inter-row deep furrow 30A in the traveling direction, the furrow cutting plate 33 having an attack angle on its upper surface that enables furrow cutting even in hard fields.

[0031] 1 and 7, reference numeral 63 denotes a headland leveling rotor. This headland leveling rotor 63 is disposed above the deep layer furrow 30 between the front auxiliary bar of the furrow cutting and straw mixing plate 33 and the mounting flange.

[0032] FIG. 7 is a schematic diagram showing the positional relationship in the width direction and the front-rear direction of the agricultural machine of the main parts of the fertilizer applicator 20 according to the embodiment.

[0033] As shown in the same figure, the fertilizer applicator 20 has a plurality of leveling floats 16A, 16B and sensor floats 16C arranged in a width direction perpendicular to the direction of travel, and of these, a pair of left and right outer end inter-row deep layer furrows 30B are provided on both widthwise outer sides of the leveling floats 16A, 16B at both ends in the width direction (in Figure 7, which is a bottom view, the right side of the leveling float 16A and the left side of the leveling float 16B; in top view, the opposite side to Figure 7), and on both outsides thereof, side row shallow layer furrows 40 are provided.

[0034] As shown in Fig. 8, outside the outer end row deep layer furrow 30B, the side row shallow layer furrow 40 is provided on the outer side in the width direction of the agricultural machine among the multiple side row shallow layer furrows 40, and an outer end ground leveling plate 41 having an attack angle is provided from the front side in the forward direction, and further, in front of that, a soil cover plate 42 is provided for covering the furrow with mud after spreading granular fertilizer in the furrow formed by the side row shallow layer furrow 40. Also, a furrow cutting and straw filtration plate 33 is provided in front of the outer end row deep layer furrow 30B.

[0035] As shown in FIG. 4, the inter-row deep layer furrow work 30A is arranged behind the first auxiliary wheel 15A, and the outer end inter-row deep layer furrow work 30B is arranged behind the second auxiliary wheel 15B, with the two located at the same position in the width direction of the agricultural machine.

[0036] In the mobile agricultural machine 10 of this embodiment, when it moves forward to the left in Figure 1, the rear wheel 14 and the auxiliary wheels 15A, 15B located on the outside of the rear wheel 14 in the width direction stir up the field surface, and at a position behind it, the furrow cutting straw insertion plate 33 cuts into the top surface of the field with an angle of attack that allows furrows to be easily cut, so that the inter-row deep furrow making furrow 30A located behind this furrow cutting straw insertion plate 33 easily forms a furrow into which granular fertilizer can be dropped.

[0037] As shown in FIG. 4, granular fertilizer is appropriately dropped into the furrow from the tip of the lower hose 26 arranged on the rear side of the furrow body 32 at the front end of the inter-row deep furrow 30A.

[0038] At this time, the mud pushed out to the left and right by the furrow making body 32 tries to rise upward, but is pressed down by the furrow making leveling plate 31 and flows outward in the width direction, so that the mud is prevented from overflowing the furrow making leveling plate 31 and flowing into the furrow making body 32.

[0039] Granular fertilizer is dropped into the shallow parts of the field from a shallow layer side stripe fertilizer application hose 25 shown in FIG.

[0040] The fertilizer applicator 20 according to the embodiment of the present invention has the following effects.

[0041] The deep inter-row furrowing 30A is arranged between the rows between the ground leveling floats 16A, 16B and the sensor float 16C, so that the length of the furrowing in the front-to-rear direction is secured and soil can be covered by piling soil on the outside of each float using the ground leveling floats 16A, 16B and the sensor float 16C.

[0042] Next, the height of the inter-row deep furrow 30A is adjustable, so that the depth to which the granular fertilizer is applied can be adjusted, and the height can be easily adjusted according to the degree of mud compression, tillage depth, and root growth of each variety.

[0043] In addition, the inter-row deep trenching 30A is provided with a trenching leveling plate 31 having attack angles α1 and α2 above the trenching, and therefore has a leveling function to prevent mud from overflowing above the trenching.

[0044] In addition, the outer end leveling plate 41 is provided on the outer end inter-row deep layer furrow making 30B, and the side row shallow layer furrow making 40 and the soil cover plate 42 are attached to it, so it is possible to omit the small floats that were provided on both sides of the conventional 8-row rice transplanter and provide furrow making and soil cover plates. Furthermore, the furrow cutting and straw sieving plate 33 with a smaller attack angle is provided at the front integrally with each inter-row deep layer furrow making 30A and the outer end inter-row deep layer furrow making 30B, so furrows can be cut reliably even in hard fields. Also, by reducing the attack angle, it is easy to sieve straw into the ground.

[0045] Furthermore, in this embodiment, a deep furrow cutting between the outer end rows 30B is provided in the space on both sides of the width of the agricultural machine where a single-row mini-float was previously provided, so that furrow cutting assistance can be achieved by the second auxiliary wheel 15B without affecting adjacent seedlings, and granular fertilizer can also be spread in the above-mentioned space. Furthermore, the deep furrow cutting between the outer end rows 30B has angles of attack α1 and α2 in the direction of travel, so that it can replace a mini-float.

[0046] In addition, the deep layer furrow 30B between the outer end rows in the above embodiment is designed to spread one row of granular fertilizer on the outer side in the width direction of the agricultural machine, but the present invention is not limited to this and can also be applied to the case where two rows of fertilizer are spread.

[0047] [Example 2] The mobile agricultural machine with fertilizer applicator 20A (see Figure 9) of Example 2 has a basic configuration similar to that of Example 1, which includes left and right front wheels 12 and rear wheels 14 arranged in a width direction perpendicular to the forward direction and capable of rotating in a forward direction while in contact with the surface of the field, a first auxiliary wheel 15A and a second auxiliary wheel 15B arranged coaxially with the rear wheels 14 on the inside and outside of the rear wheels 14 in the agricultural machine width direction, a sensor float 16C arranged in a middle position in the agricultural machine width direction between the pair of left and right rear wheels 14 and at a position rearward of the rear wheels 14, and a plurality of ground leveling floats 16A, 16B arranged on both sides of the sensor float in the agricultural machine width direction, and an outer end ground leveling plate with a receiving function (hereinafter referred to as a receiving ground leveling plate) 50 is provided thereon.

[0048] Here, the receiving ground leveling plate 50 has the same configuration as the outer end ground leveling plate 41 in the first embodiment, but is given a different symbol because it is provided with a swinging shallow layer furrowing plate 50A and a swinging soil cover plate 50B as described below.

[0049] As shown in Figure 9, the fertilizer applicator 20A is configured as follows: on both outer sides of the fertilizer applicator 20 in Example 1 above, the side row shallow layer furrow 40 shown in Figure 8, together with the soil cover plate 42, are assumed to have been moved to a more outer position so as to create a gap S (see Figure 15) between the outer end row deep layer furrow 30B adjacent to it just inside, so that no impurities will remain. At these positions, as shown in Figures 9 to 13, a swaying shallow layer furrow 50A and a swaying soil cover plate 50B are provided, which are capable of catching and draining these materials and achieving the function of catching and draining them up and down by utilizing the swinging of the leveling plate 50.

[0050] In other words, a receiving and leveling plate 50 equipped with a oscillating shallow layer furrow work 50A and a oscillating soil cover plate 50B is placed at both ends of the fertilization range of the fertilizer applicator 20A in the width direction of the agricultural machine, and an outer end inter-row deep layer furrow work 30B is placed on the inside in the width direction of the agricultural machine with a gap S interposed therebetween.

[0051] The gap S is preferably 20 mm to 50 mm. If the gap S is less than 20 mm, the receiving and leveling plate 50 and the outer end inter-row deep layer furrow 30B may come into contact with each other due to vibration in the width direction of the agricultural machine while the agricultural machine is in operation, and if the gap S exceeds 50 mm, no foreign matter is generated.

[0052] Here, the outer ends of the fertilization range of the fertilizer applicator may be located at both ends in the width direction of the agricultural machine of the pillow ground leveling rotor 63 shown in Figures 1 and 7.

[0053] In addition, in the conventional method, floats or the like are not provided at the outer positions in the width direction of the agricultural machine, i.e., outside the fertilization range applied by the fertilizer applicator, because they would interfere with the adjacent rows on the outside. However, the receiving and leveling plate 50 of this embodiment 2 simply needs to have a wiper function to prevent debris from becoming entangled in the deep layer furrow 30B between the outer end rows, and can be configured to be thin in the width direction of the agricultural machine, so there is no interference with the adjacent rows.

[0054] As shown in FIG. 16, the receiving ground leveling plate 50 has a plate body 51 having the same configuration as the outer end ground leveling plate 41 in the first embodiment. This plate body 51 is composed of a swing stay part 54 at the swing base end side into which a swing pin 53 with a rotation prevention plate is inserted, and a leveller part 60 at the swing tip side, and is swingable around the swing pin 53 as a whole. Furthermore, the receiving ground leveling plate 50 is swingable by the swing type shallow layer furrowing 50A, the swing type soil cover plate 50B, and the swing mechanism 50C that supports them in a vertical direction swingable around the swing pin 53 in conjunction with the planting depth in the same manner as the float, on the plate body 51. The swing range is the range indicated by the solid line and the two-dot chain line 60A at the tip of the leveller part 60 in FIG. 15. The swing pin 53 in FIG. 16 is shown in a state in which the rotation prevention plate is not provided.

[0055] This oscillating type shallow layer furrowing 50A and oscillating type soil cover plate 50B maintain their functions as a shallow layer furrowing and as a soil cover plate, while ensuring sufficient distance from the deep layer furrowing 30, thereby allowing impurities remaining in the outer end inter-row deep layer furrowing 30B to be diverted rearward.

[0056] Specifically, the oscillating mechanism 50C has a support lever 52 attached to the main body of the fertilizer applicator 20 by an extension pipe 52A so as to be freely oscillating, and the oscillating stay portion 54 attached to the outer surface of the tip of the lever in the width direction of the agricultural machine by a swing pin 53 so as to be freely oscillating.When granular fertilizer is spread, the oscillating stay portion 54, which moves in conjunction with the up and down movement of the field surface, forms a relative flow in the vertical direction along the side of the oscillating shallow layer furrow 50A, thereby catching impurities that tend to get entangled in the side row shallow layer furrow 40.

[0057] Here, the swing stay portion 54 and the leveller portion 60 are formed as a continuous, integrated unit by bending a single metal plate as shown in FIGS.

[0058] Conventionally, levellers have been constructed by fastening a plastic leveling plate and an iron oscillating stay with bolts, but when a single metal plate is folded to form it into a continuous, integrated unit as in this embodiment, the receiving leveling plate 50 can be made smaller in width, and the side row shallow layer furrow 40 can be positioned further outboard from the outermost planting position, thereby ensuring sufficient gaps between the inner outer end row deep layer furrow 30B and the receiving leveling plate 50 and the side row shallow layer furrow 40, which greatly reduces mud push.

[0059] In the configuration of Figure 15, the leveller section 60 presses down the surface of the mud while the agricultural machinery is operating. However, in places where the surface of the mud is concave or there is a lot of moisture, the receiving and levelling plate 50 will sag, so the sagging is suppressed by the stopper 62 shown in Figure 15.

[0060] This stopper 62 is composed of a hook hole 62A provided at the tip of the oscillating stay portion 54, which is part of the leveler portion 60 shown in Figure 15, a ring-shaped band 62B that hangs down from above and is inserted into the hook hole 62A, and a support band 62C that hangs down from the main body side of the fertilizer applicator 20A, and prevents the receiving and leveling plate 50 from sagging beyond a certain level.

[0061] 15 and 16 is provided with a rotation prevention plate, which can prevent the rocking caused by wear of the rocking pin 53 and the hole caused by the edge of the metal plate of the rocking stay portion 54, and also has the effect of reducing the surface pressure on the pipe receiving the rocking pin 53 while suppressing wear, making it less susceptible to wear. Note that the rocking pin 53 can be made of a material with high wear resistance, making the rotation prevention plate unnecessary.

[0062] The mobile agricultural machine with fertilizer applicator 20A of Example 2 is configured by providing an oscillating shallow layer furrow 50A and an oscillating soil cover plate 50B at the positions on both outer sides of the width of the agricultural machine when it is assumed that the side strip shallow layer furrow 40 has been moved to the outer position together with the soil cover plate 42 in the fertilizer applicator 20 of Example 1 described above. However, the present invention is not limited to this, and can also be applied to a case where a fertilizer applicator having a normal shallow layer furrow and / or deep layer furrow and a float as the basic configuration is provided with a flow receiving mechanism.

[0063] In the first and second embodiments, the mobile agricultural machine has a pair of left and right first auxiliary wheels 15A arranged coaxially with the pair of left and right rear wheels 14 and adjacent to both inner sides in the width direction of the machine, and a pair of left and right second auxiliary wheels 15B arranged adjacent to both outer sides in the width direction of the machine, but the present invention is not limited to this and can also be applied to a mobile agricultural machine that does not have auxiliary wheels. [Industrial Applicability]

[0064] In the agricultural field, it can be used for mobile agricultural machinery equipped with fertilizer applicators. [Explanation of symbols]

[0065] 10…Mobile agricultural machinery 12…Front wheel 14…Rear wheel 15A…First auxiliary wheel 15B…Second auxiliary wheel 16A, 16B…Ground leveling float 16C…Sensor float 20, 20A...Fertilizer 21...Frame 21A…Bolt hole 22...Fertilizer applicator hopper 24…Fertilizer hose 25…Shallow layer side stripe fertilizer hose 25A…Deep layer inter-row fertilizer hose 26…Downward hose 30...Deep groove 30A…Deep groove between rows 30B…Deep groove between outer end rows 31... Groove leveling plate 32… Groove making body 32A…Top end surface 32B…Bottom end surface 32C…Front cover part 33…Grooved straw strainer plate 34…Height adjustment board 34A...Bolt insertion hole 35...Mounting bolt 40…Side groove for shallow layer 41…Outer edge leveling plate 42…Soil cover plate 43...Diversion pipe 44…Seedling stand 50...Outer end leveling plate with receiving function (receiving leveling plate) 50A... Swinging shallow trenching 50B... Swinging soil cover plate 50C...Oscillation mechanism 51…Plate body 52…Support lever 52A…Extension pipe 53...Oscillating pin 54...Swing stay part 60…Leveller section 62...Stopper 62A…Hook hole 62B…Ring-shaped band 62C…Support band 63...Pillow ground leveling rotor

Claims

1. A mobile agricultural machine with a fertilizer applicator for spreading granular fertilizer, the mobile agricultural machine having left and right front and rear wheels that are rotatable in a forward direction while in contact with a surface of a field and arranged in parallel in a width direction perpendicular to the forward direction, a sensor float provided in a middle position in the agricultural machine width direction between the pair of left and right rear wheels and in a position rearward of the rear wheels, and a plurality of ground leveling floats that are arranged on both sides of the sensor float in the agricultural machine width direction, The fertilizer applicator includes: a fertilizer applicator hopper for storing granular fertilizer; a plurality of side-row shallow layer furrows for forming furrows for dropping granular fertilizer near the surface of the field in the side rows of each planting position; A plurality of deep layer furrows for forming furrows between the rows for dropping granular fertilizer at a position deeper than the furrows formed by the side row shallow layer furrows; A fertilizer hose that supplies granular fertilizer from the fertilizer applicator hopper to above the side shallow layer furrow; A lower hose connected to the fertilizer hose so as to divert a portion of the granular fertilizer passing through the fertilizer hose and send it to the deep layer furrow. The deep layer furrows are, in a plan view, configured to be connected to the tip of the lower hose at the middle position in the agricultural machine width direction of the sensor float and each of the ground leveling floats and to spread granular fertilizer in the deep layer between the rows, and outer end inter-row deep layer furrows are arranged on both sides of the ground leveling float in the agricultural machine width direction and are configured to spread one or two rows of granular fertilizer therein.

2. In claim 1, A mobile agricultural machine with a fertilizer applicator, characterized in that it has a pair of first auxiliary wheels (left and right) arranged coaxially with the pair of left and right rear wheels and adjacent to both inner sides in the width direction of the agricultural machine, and a pair of second auxiliary wheels (left and right) arranged adjacent to both outer sides in the width direction of the agricultural machine, and the multiple inter-row deep layer furrowing furrows located in the widthwise middle of each ground leveling float are arranged rearward at the same position as the widthwise positions of the first and second auxiliary wheels.

3. In claim 1, The mobile agricultural machine with a fertilizer applicator is characterized in that the height position at which granular fertilizer is spread in the inter-row deep furrow can be adjusted depending on how the mud is pressed down.

4. In claim 1, The mobile agricultural machine with a fertilizer applicator is characterized in that the inter-row deep furrow is provided with an angle of attack above the furrow and has a furrow leveling plate that presses down the overflow portion that rises higher than the top surface of the mud in the field when the machine moves forward, thereby leveling the ground.

5. In claim 4, The deep inter-row groove is A mobile agricultural machine with a fertilizer applicator, comprising a furrow making body formed of a semi-cylindrical body whose upper end, lower end and rear end are open and whose front end is V-shaped and protruding forward in horizontal cross section, said furrow making body having upper and lower end faces formed with an angle of attack above the furrow making, and said upper end face being provided with said furrow making ground leveling plate.

6. In claim 1, A mobile agricultural machine with a fertilizer applicator, characterized in that the fertilizer applicator has a furrow cutting straw mixing plate with an attack angle capable of cutting furrows on the upper surface of a hard field in front of the inter-row deep furrows.

7. In any one of claims 1 to 6, A mobile agricultural machine with a fertilizer applicator is characterized in that, outside the outer end row deep layer furrow, one of the multiple side row shallow layer furrows is provided on the outer side in the width direction of the agricultural machine, and this side row shallow layer furrow is provided with an outer end leveling plate having an attack angle from the front in the forward direction, and in front of that is provided a soil covering plate which covers the furrow with mud after granular fertilizer is spread in the furrow formed by the side row shallow layer furrow, and further, a furrow cutting and straw sorting plate is provided in front of the outer end row deep layer furrow.

8. In any one of claims 1 to 6, The fertilizer applicator includes: The fertilizer applicator includes: a side row shallow layer work furrow on the outer side in the agricultural machine width direction among the plurality of side row shallow layer work furrows provided outside the outer end row deep layer work furrow; and an outer end leveling plate with a flow receiving function, which is integrally provided with an outer end leveling plate at an outer position on both sides in the fertilizer applicator width direction, and a soil cover plate for covering the furrow with mud after spreading granular fertilizer in the furrow formed by the side row shallow layer work furrows; A rocking shallow layer furrow and a rocking soil cover plate are provided at both ends of the fertilizer application range in the agricultural machine width direction, The swing mechanism is configured to support the swing type shallow layer furrow and the swing type soil cover plate so that they can swing up and down in conjunction with the planting depth in the same manner as the float, This mobile agricultural machine with a fertilizer applicator is characterized in that the oscillating shallow layer furrow work and the oscillating soil cover plate maintain their functions as shallow layer furrow work and soil cover plate, while ensuring a sufficient distance from the deep layer furrow work, thereby allowing impurities remaining in the deep layer furrow work between the outer end rows to be diverted backward.

9. In claim 8, A mobile agricultural machine equipped with a fertilizer applicator, characterized in that both end positions of the fertilization range in the agricultural machine width direction are positions adjacent to the outside of the outermost planting rows in the agricultural machine width direction.

10. In claim 8, The swing mechanism has a support lever attached to the main body of the fertilizer applicator by a swing shaft, and a swinging stay portion attached to the outer surface of the tip of the support lever in the width direction of the agricultural machine by a swing pin so that it can swing freely, and is configured so that when granular fertilizer is spread, the swinging stay portion swings up and down along the side of the swinging shallow layer furrow in conjunction with the up and down movement of the field surface, thereby catching any debris that may become entangled in the side row shallow layer furrow.

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