JP2015053897A - Rice planter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that makes rice planting work using a rice planter more efficient.SOLUTION: A planting device of a rice planter according to the invention includes: multiple floats 351 that contact the ground by allowing their bottom surfaces to follow a field surface; and multiple land leveling plates 352 that include land leveling claws projecting downward. The floats 351 and the land leveling plates 352 are arranged alternately in a horizontal direction. In conducting rice planting work, wheel tracks due to turning remain along ridge side regions of the field. Since the floats 351 and the land leveling plates 352 are arranged across the rice planter in the horizontal direction, the wheel tracks along the ridge side regions are leveled even if seedlings are planted in a state where the wheel tracks due to turning remain. Accordingly, a step of leveling the wheel tracks due to turning can be omitted. The floats 351 and the land leveling plates 352 do not overlap with one another in a front-back direction. Accordingly, driving force required for land leveling is minimized.

Description

  The present invention relates to a rice transplanter.

  Conventionally, various devices have been made to improve the efficiency of rice planting work. For example, when performing rice planting work in one field while reciprocating a rice transplanter, a method of efficiently performing rice planting work by devising the order of rice planting as shown in FIG. 12 is known. .

  In the method shown in FIG. 12, first, as a pre-process, the process proceeds along the edge of the region A1 shown in FIG. The area A1 is an area from the shoreline to the distance of the width W for one process of the rice transplanter. In the previous process, by running the rice transplanter while using the creasing marker, a marker line is formed at the center of the region T1 that passes in the next first process.

  After the scoring in the previous process, the rice transplanter is turned in the area A2. A region A2 is a region from the end of the advance direction of the previous process to the distance of the width W for one process of the rice transplanter.

  Next, as the first step, the process proceeds while performing rice planting with the planting device along the lines formed in the previous step. Thereby, seedlings are planted in the region T1. Also in this 1st process, the line | wire which becomes a mark is formed in the center of the area | region T2 which passes in the following process by running a rice transplanter using a creasing marker. When the rice planting work for the area T1 is completed, the rice transplanter is turned in the area A3. The region A3 is a region from the edge of the traveling direction of the first process to the distance of the width W.

  Subsequently, as a second step, seedlings are planted in the region T2 as in the first step. In this way, the planting process is repeated while reciprocating the rice transplanter, and rice planting is performed while leaving the regions A1 to A4 each having a width W.

  When the rice planting operation is performed as described above, the wheel marks of the rice transplanter remain in order to perform the turning of the rice transplanter in the areas A2 and A3 at the shore. Therefore, it is necessary to level the unevenness of the field due to the wheel marks before planting the areas A1 to A4 at the heel in the final process.

  2. Description of the Related Art Conventionally, a rice transplanter equipped with leveling means such as a float has been known as a technique for planting rice while leveling the unevenness of the field. A conventional rice transplanter is described in Patent Document 1, for example. The rice transplanter described in Patent Document 1 is provided with a float and a leveling member as leveling means. Thereby, a seedling can be transplanted while leveling the unevenness of the field.

JP 2003-304717 A

  In the rice transplanter described in Patent Document 1, a wide leveling member in the left-right direction is provided in front of the float at a position overlapping all the floats. A planting beak is provided behind the float. By doing in this way, leveling can be performed about the whole left-right direction of a rice transplanter.

  However, in the rice transplanter described in Patent Document 1, since the leveling member is arranged in the entire left and right direction of the rice transplanter, the resistance due to the leveling member is large, and the load on traveling of the rice transplanter increases. For this reason, it is difficult to increase the traveling speed of the rice transplanter. Therefore, in the structure of the rice transplanter of Patent Document 1, it is difficult to further increase the efficiency of the rice planting operation.

  In order to perform more efficient rice planting work, it is required to suppress the ratio of the leveling member in the left-right direction while maintaining the leveling effect in the entire left-right direction.

  This invention is made | formed in view of such a situation, and it aims at providing the technique which makes the rice planting operation | work using a rice transplanter more efficient.

  In order to solve the above-mentioned problem, the first invention of the present application is a rice transplanter, and includes a traveling unit having a plurality of wheels, and a planting device for planting seedlings in a field. A plurality of floats that ground the lower surface following the farm scene, and a plurality of earth leveling plates having leveling claws protruding downward, and the float and the earth leveling plate are: Alternatingly arranged in the left-right direction, the widest widest part of each float in the left-right direction and the earth leveling plate are arranged in a straight line in the left-right direction.

  2nd invention of this application is the rice transplanter of 1st invention, Comprising: It has an even number of the floats, and an odd number of the earth leveling boards arranged between the floats adjacent on the right and left, The planting device is disposed behind the traveling unit, and the wheels of the traveling unit include a front main wheel, a rear main wheel, and a rear auxiliary wheel, the front main wheel and the rear main wheel. Each overlaps with the earth leveling plate in the front-rear direction, the rear auxiliary wheel overlaps with the float in the front-rear direction, and the earth leveling plate disposed in the center overlaps with any of the wheels in the front-rear direction. Don't be.

  3rd invention of this application is the rice transplanter of 1st invention or 2nd invention, Comprising: The lower end part of the said soil leveling board is arrange | positioned below the said lower surface of the said adjacent float, The said leveling board Swings up and down following the adjacent float.

  4th invention of this application is the rice transplanter in any one of 1st invention from 3rd invention, Comprising: The 1st storage position extended upwards from a rice transplanter main body, and the 1st use extended from the said rice transplanter main body to the side An arm that is pivotally attached to the position, a creasing marker that is fixed to the arm, and a collar that is pivotally attached to a collar marker mounting portion provided near the tip of the arm. And when the arm is placed at the first use position, the muscle marker forms a muscle that serves as a mark on the field, and the collar marker is the collar marker mounting portion. The second storage position extending along the arm and toward the base of the arm, and when the arm is in the first use position, further toward the side from the collar marker attaching portion. Extending in a second use position; It is rotatable.

  5th invention of this application is the rice transplanter of 4th invention, Comprising: The said edge marker has the rod-shaped part formed with the elastic member, and the mark part fixed to the front-end | tip of the said rod-shaped part. And the arm fits the rod-shaped portion inside and fixes the rod-shaped portion to the second storage position, and fits the first guide groove and the rod-shaped portion inside to fix the second use position. A second guide groove.

  6th invention of this application is the rice transplanter of 4th invention or 5th invention, Comprising: When the said arm is in the said 1st use position, the said scoring marker rotates below the said arm. Have

  7th invention of this application is a rice transplanter in any one of 1st invention to 6th invention, Comprising: It further has a control part which controls each part of the said planting apparatus, The said planting apparatus is a seedling box A plurality of pot seedling transplanting units for taking out the pot seedlings from the plant and transplanting the pot seedlings to a field, the pot seedling transplanting unit placing the seedling box on the seedling placing base and the seedling placing stand A seedling take-out unit that takes out the pot seedlings from the seedling box one row at a time, and an automatic supply unit that supplies the seedling box to the seedling mount, and the planting device includes the pot There is a self-sufficiency lamp and a missing stock lamp corresponding to each of the seedling transplanting units, and the pot seedling transplanting unit is provided in at least one of the seedling mounting table or the automatic supply unit, respectively, Automatic seedling box feeding center that detects the supply status And a stock removal sensor that is provided in the seedling removal unit and detects a conveyance state in the row to be removed of the seedling box, and the control unit is based on a signal from the seedling box automatic supply sensor, When the automatic supply failure of the seedling box is detected, the corresponding self-sufficiency failure lamp is turned on or flashes, and when the control unit detects the conveyance failure of the seedling box based on the signal from the stock loss sensor, it corresponds. The missing stock lamp lights up or flashes.

  8th invention of this application is the rice transplanter of 7th invention, Comprising: The said planting apparatus has a lamp panel, and the said lamp panel respond | corresponds to two said pot seedling transplanting units which adjoin 2 A self-sufficient lamp and two missing lamps are provided.

  A ninth invention of the present application is the rice transplanter according to any one of the first to eighth inventions, wherein the planting device places a seedling box for pot seedlings, and the seedling mounting table. An automatic supply unit for supplying the seedling box, and the seedling stage extends obliquely downward from an upper end portion, and the automatic supply unit holds a bottom portion of the seedling box, and a bottom plate portion, An automatic supply rail comprising a side plate portion extending along the side surface of the seedling box and an upper plate portion covering an upper portion in the vicinity of the side portion of the seedling box, and an end portion on the downstream side of the automatic supply rail The vicinity extends obliquely toward the upper end portion of the seedling stage, and the first end portion on the downstream side of the upper plate portion and the second end portion on the downstream side of the side plate portion correspond to the bottom plate portion. The straight line connecting the first end and the third end in the cross section viewed from the left and right direction is located on the downstream side of the third end on the downstream side is the bottom of the seedling platform Substantially parallel, further comprising a connection plate for fixing the said seedling mounting table and near the second end of the side plate portion.

  According to the first to ninth inventions of the present application, the float and the earth leveling plate are arranged in a straight line over the entire left and right direction of the rice transplanter. Therefore, even if seedlings are planted with the wheel marks from turning left, the entire width of the rice transplanter is evenly distributed, including the wheel marks in the part along the edge. Thereby, the process of leveling the wheel marks by turning can be omitted. In addition, each of the float and the leveling board does not overlap with the other floats and leveling boards in the front-rear direction. Thereby, the driving force required for leveling is minimized.

  According to the 2nd invention of this application, the wheel trace of the main wheel which remains deeply is leveled with a leveling board, and the wheel trace of an auxiliary wheel is leveled with a float. Thereby, the field can be leveled efficiently and effectively. In addition, a leveling board is also arranged in the center where it does not overlap the wheel. Thereby, not only the wheel marks can be leveled, but also the unevenness in the field can be leveled before the rice planting work.

  According to the third invention of the present application, soil leveling can be performed in accordance with the height of the field scene detected by the float. Thereby, the soil leveling of the field can be performed reliably.

  According to the fourth aspect of the present invention, the edge marker can be stored along the arm. Thereby, it is not necessary to store the border marker separately from the rice transplanter body or to prepare it separately when necessary.

  According to the fifth invention of the present application, the presence of the first guide groove prevents the heel marker from interfering with driving the rice transplanter during storage. Further, the presence of the second guide groove determines the mounting angle of the edge marker during use. Thereby, it is not necessary to adjust the mounting angle every time, and the operation efficiency increases.

  According to the sixth invention of the present application, it is possible to rotate the creasing portion perpendicularly to the field compared to the case where the creasing portion is provided at the tip of the arm. Thereby, the resistance by a creasing part can be minimized.

  According to the seventh invention of the present application, the cause of the abnormality can be quickly recognized by providing the lamp for each unit and for each cause. Thereby, the interruption time by abnormality in a planting process can be shortened.

  According to the eighth invention of the present application, the cause of the abnormality can be confirmed more quickly by reducing the number of panels that need to be visually recognized. In addition, in the 8-row rice transplanter, the lamps of all pot seedling transplanting units can be confirmed by providing one panel on each side. For this reason, it can provide in the position which is easy to see a panel.

  According to the ninth invention of the present application, the positional deviation of the seedling box transferred to the seedling stage is suppressed without reducing the height at which the pot seedling of the seedling box transferred on the seedling stage contacts. Thereby, the transfer of the seedling box from the automatic supply rail to the seedling stage can be performed more smoothly without increasing the possibility that the pot seedling will be damaged. In addition, the connection plate suppresses a shift in the relative position between the vicinity of the downstream end portion of the automatic supply rail and the seedling mounting table. Thereby, the transfer of the seedling box from the automatic supply rail to the seedling stage can be performed more smoothly.

It is a side view of a rice transplanter. It is a side view of a planting apparatus. It is the block diagram which showed the control system of the planting apparatus. It is a bottom view of a leveling part, a planting nail, and a rear wheel. It is a partial front view of a planting apparatus. It is a front view of a marker. It is the schematic which showed the rice planting process by the rice transplanter of this invention. It is a partial cross-sectional view of an automatic supply rail. It is a fragmentary longitudinal cross-sectional view of a planting apparatus. It is the schematic which showed the rice planting process by the conventional rice transplanter.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present application, the traveling direction of the rice transplanter is referred to as “front direction”, and the direction opposite to the traveling direction of the rice transplanter is referred to as “rear direction”. Moreover, in this application, an up-down direction is defined according to the attitude | position at the time of use of a rice transplanter. Moreover, in the attitude | position at the time of use of a rice transplanter, the horizontal and perpendicular | vertical direction is called a left-right direction. Note that the left direction and the right direction are defined with reference to the state facing the front direction. In the drawings, there are cases where “front” is assigned to the front, “rear” to the rear, “left” to the left, and “right” to the right.

<1. Overall structure of rice transplanter>
FIG. 1 is a side view of the rice transplanter 1. The rice transplanter 1 is a device for transplanting a plurality of rice pot seedlings grown in a seedling box to a paddy field. As shown in FIG. 1, the rice transplanter 1 of this embodiment has the traveling part 2 and the planting apparatus 3 attached to the back of the traveling part 2 so that raising / lowering was possible.

  The traveling unit 2 includes a plurality of wheels 20 including front wheels 21 and rear wheels 22, and a traveling vehicle body 23 that is supported by the wheels 20 so as to be able to travel. In the present embodiment, the front wheel 21 has two front main wheels 211, and the rear wheel 22 has two rear main wheels 221 and four rear auxiliary wheels 222. The rear auxiliary wheel 222 is attached to each of the left and right sides of the rear main wheel 221. However, the traveling unit 2 may be used with the rear auxiliary wheel 222 removed.

  At the time of transplanting the pot seedlings, the rice transplanter 1 advances the traveling vehicle body 23 by the wheels 20 and the planting device 3 sequentially transplants the pot seedlings to the field. The rice transplanter 1 according to the present embodiment is a so-called rear mount type in which a planting device 3 is disposed behind the traveling unit 2.

  The traveling vehicle body 23 includes a driver's seat 231, an operation unit 232 including a handle, various levers, and the like, a display panel 233, and an alarm lamp 234. When the driver sits on the driver's seat 231 and operates the operation unit 232, the rice transplanter 1 is driven. The display panel 233 displays the control content of each part of the rice transplanter 1. The warning light 234 is provided in front of the driver seat 231. The warning light 234 is disposed at a position where it is easy for a driver who is seated in the driver's seat 231 to see.

  The planting device 3 is attached to the rear of the traveling vehicle body 23 via the link 11 so as to be movable up and down. The rice transplanter 1 raises the planting device 3 when moving or turning without transplanting the pot seedling. Thereby, it is suppressed that the planting apparatus 3 malfunctions by the contact with a road or a farm field. Moreover, the rice transplanter 1 lowers the planting apparatus 3 to a position where a float 351 described later comes into contact with the field when transplanting the pot seedling. Thereby, a pot seedling can be planted in the suitable depth of a farm field.

  FIG. 2 is a side view of the planting device 3. FIG. 3 is a block diagram showing a control system of the planting device 3. As shown in FIG. 2, the planting device 3 includes an automatic supply unit 31, a seedling placing table 32, a seedling removing unit 33, a transplanting unit 34, a leveling unit 35, a marker 36, and a lamp panel 37. The planting apparatus 3 is a part which takes out a pot seedling from a seedling box and plants the pot seedling in a field.

  In addition, as shown in FIG. 3, the rice transplanter 1 includes a control unit 10. The control unit 10 is electrically connected to the automatic supply unit 31, the seedling extraction unit 33, the lamp panel 37, the display panel 233, the warning lamp 234, and the warning buzzer 12. In accordance with signals input from the switch sensors 611 to 615 in the automatic supply unit 31 and the push-out sensor 332 and the seedling box sensor 333 in the seedling taking-out unit 33, the control unit 10 includes a lamp panel 37, a display panel 233, and an alarm lamp. 234 and the alarm buzzer 12 are controlled.

  The rice transplanter 1 of this embodiment is an 8-row rice transplanter. Therefore, the planting apparatus 3 of the present embodiment has four pot seedling transplanting units 30. The pot seedling transplanting unit 30 includes an automatic supply unit 31, a seedling placing table 32, a seedling taking out unit 33, and a transplanting unit 34, respectively. Since one transplant part 34 has two planting claws 341, the planting apparatus 3 has eight planting claws 341. That is, the rice transplanter 1 of this embodiment is an eight-row planting machine having eight planting claws 341.

  The automatic supply unit 31 includes an automatic supply rail 311 and a transport mechanism 312 (see FIG. 3). The automatic supply unit 31 transports the seedling box placed on the automatic supply rail 311 to the seedling mounting base 32 by the transport mechanism 312 and supplies the seedling box to the seedling mounting base 32. The detailed configuration of the automatic supply unit 31 will be described later.

  A seedling box is placed on the seedling stage 32. The seedling stage 32 extends obliquely downward from the upper end portion toward the front. The automatic supply unit 31 and the seedling stage 32 are provided with a transport mechanism 312 for transporting the seedling box. The transport mechanism 312 transports the seedling box from the automatic supply unit 31 to the seedling stage 32. Further, the transport mechanism 312 transports the seedling box placed on the seedling placing stand 32 in accordance with the timing of taking out the pot seedling in the seedling picking unit 33.

  The seedling extraction unit 33 extracts the pot seedlings from the seedling box placed on the seedling mounting table 32 one by one. The transplanting part 34 plants the pot seedling taken out from the seedling box by the seedling taking-out part 33 to the farm field leveled by the leveling part 35. The transplanting part 34 has a planting claw 341 for planting a pot seedling in a field. The detailed configuration of the leveling unit 35 will be described later.

  The marker 36 is a part that forms a travel reference line for the next process in the field. In this embodiment, as shown in FIG. 1, the marker 36 is attached to the side portion of the planting device 3, but the present invention is not limited to this. If the marker 36 is the main body of the rice transplanter 1, the marker 36 may be attached to the traveling unit 2 or another place of the planting device 3. Since FIG. 1 is a left side view of the rice transplanter 1, only the left marker 36 is shown, but the rice transplanter 1 of the present embodiment also has the marker 36 on the right side.

  The lamp panel 37 is a panel for displaying the type of abnormality when an abnormality occurs in the operation of the planting device 3 during the rice planting operation. The detailed configuration of the lamp panel 37 will be described later.

<2. Structure of leveling section>
Next, a detailed configuration of the leveling unit 35 will be described. FIG. 4 is a bottom view of the leveling unit 35, the planting claw 341, and the rear wheel 22 of the traveling unit 2. FIG. 5 is a front view of the leveling unit 35.

  As shown in FIG. 4, the leveling unit 35 of the present embodiment includes four floats 351 and three earth leveling plates 352. Each of the floats 351 is disposed below the pot seedling transplanting unit 30.

  Each of the floats 351 is a part of the transplant part 34. The float 351 detects the height of the field by leveling the unevenness formed on the field and grounding the lower surface following the field scene. The transplanting unit 34 transplants pot seedlings using the planting claws 341 in accordance with the height of the field detected by the float 351.

  The float 351 has a wide portion 353 having the widest width in the left-right direction, and a width detail 354 located behind the wide portion 353. Planting claws 341 are arranged on the left and right sides of the width detail 354. Further, the planting claw 341 is disposed behind the wide portion 353. Thereby, at the time of transplanting the pot seedling, the pot seedling is planted by the planting claws 341 in the field leveled by the wide portion 353.

  The earth leveling plate 352 is a fork-like plate extending obliquely downward from the front toward the rear. That is, the earth leveling plate 352 has a plurality of leveling claws protruding downward. The earth leveling plate 352 swings up and down following the adjacent float 351. Thereby, the soil leveling plate 352 performs soil leveling in accordance with the height of the field scene detected by the float 351. Further, as shown in FIG. 5, the lower end portion of the earth leveling plate 352 is disposed below the lower surface of the adjacent float 351.

  The float 351 and the earth leveling plate 352 are arranged over substantially the entire left-right direction of the rice transplanter 1. As shown in FIGS. 4 and 5, the earth leveling plate 352 is disposed between two floats 351 that are adjacent on the left and right. That is, the float 351 and the earth leveling plate 352 are alternately arranged in the left-right direction. Thereby, the soil leveling board 352 levels the field between the floats 351 at the time of transplanting a pot seedling. Therefore, when transplanting a pot seedling at the time of dredging where a turning mark remains, the seedling can be planted while leveling the turning mark.

  On the other hand, the float 351 and the earth leveling plate 352 do not overlap in the front-rear direction. Moreover, the rice transplanter 1 travels straight toward the front when transplanting seedlings. Thereby, both the float 351 and the earth leveling board 352 do not level the same position on the field. Therefore, an unnecessary load is not applied to the traveling of the rice transplanter 1. That is, rice planting work is made efficient.

  Moreover, as shown in FIG. 4, the wide part 353 with the widest width of the float 351 and the earth leveling board 352 are arrange | positioned on the straight line in the left-right direction. Therefore, the float 351 and the earth leveling plate 352 level the field at the same position in the front-rear direction. As a result, when the float 351 or the soil leveling plate 352 leveles the field, the leveled soil does not easily accumulate on the left and right of the float 351 or the soil leveling plate 352. That is, the leveling effect by the leveling unit 35 is enhanced.

  Here, as described above, the rice transplanter 1 of the present embodiment is a so-called rear mount type in which the planting device 3 is arranged behind the traveling unit. For this reason, as shown in FIG. 4, the leveling part 35 and the planting nail | claw 341 are arrange | positioned behind the wheel 20. As shown in FIG.

  In the rice transplanter 1 of the present embodiment, the two left and right front main wheels 211 (see FIG. 1) and the two left and right rear main wheels 221 and the earth leveling plates 352 disposed on the left and right sides of the three are front and rear, respectively. Overlapping directions. Further, the four rear auxiliary wheels 222 overlap with the four floats 351, respectively. Thereby, at the time of transplanting the pot seedling, the wheel marks of the front main wheel 211 and the rear main wheel 221 are leveled by the earth leveling plate 352, and the wheel marks of the rear auxiliary wheel 222 are leveled by the float 351. That is, the wheel traces of the main wheels that remain deep are leveled by the earth leveling plate 352 having a high leveling effect, and the wheel traces of the auxiliary wheels that remain relatively shallow are leveled by the float 351 that has a lower leveling effect than the leveling plate 352. The Thereby, the leveling effect by the leveling unit 35 is enhanced while suppressing the load on traveling by the leveling unit 35.

  Of the three, the middle earth leveling plate 352 does not overlap with any of the wheels 20 in the front-rear direction. However, if the leveling section 35 does not have the soil leveling plate 352, the soil tends to accumulate on the center side of the float 351 when the two floats 351 at the center level the field. Moreover, if the leveling part 35 does not have the said earth leveling board 352, the wheel trace at the time of turning cannot be equalized in the center part in which the said earth leveling board 352 is located. Thus, the leveling effect by the leveling part 35 is heightened by arrange | positioning the earth leveling board 352 in the center.

<3. Marker configuration>
Next, the detailed configuration of the marker 36 will be described. FIG. 6 is a front view of the marker 36 in each state. 6A shows the storage state of the marker 36, FIG. 6B shows the first use state of the marker 36, and FIG. 6C shows the second use state of the marker 36. As shown in FIG. 6, the marker 36 includes an arm 41, a muscle marker 42, and a saddle marker 43.

  The arm 41 pivots on the side of the planting device 3 to a first storage position P11 shown in FIG. 6A and a first use position P12 shown in FIGS. 6B and 6C. It is attached as possible. In the first storage position P11, the arm 41 extends upward from the side portion of the planting device 3. In the first use position P12, the arm 41 extends laterally from the side portion of the planting device 3.

  The arm 41 includes a heel marker attaching portion 411 and a creasing marker attaching portion 412. The collar marker attaching portion 411 is provided near the tip of the arm 41. The collar marker attaching portion 411 is a so-called knob bolt. Thereby, the collar marker 43 is attached to the arm 41 so that rotation is possible. The scoring marker attaching portion 412 is provided on the base side of the arm 41 with respect to the saddle marker attaching portion 411.

  As shown in FIG. 6B, the creasing marker 42 includes a creasing portion 421 and a support portion 422. The creasing portion 421 is a so-called water wheel marker. The support part 422 includes a base part 423, a connection part 424, and a water wheel attachment part 425. The base 423 is fixed to the arm 41 via a spring 426 at the creasing marker mounting portion 412 of the arm 41. The base 423 extends substantially in parallel with the arm 41. The connection part 424 extends vertically from the tip of the base part 423. The water turbine attachment portion 425 extends substantially parallel to the arm 41 from the tip of the connection portion 424.

  The creasing portion 421 of the creasing marker 42 is disposed below the arm 41 when the arm 41 is in the first use position P12. Further, the lower end portion of the creasing portion 421 is disposed below the float 351. As a result, when the arm 41 is in the first use position P12 and the rice transplanter 1 travels while transplanting seedlings, the creasing portion 421 rotates while contacting the farm field. Thereby, the creasing part 421 forms the line | wire which becomes a driving | running | working reference line of the following process in a farm field.

  In particular, in this embodiment, the creasing portion 421 is provided not at the tip of the arm 41 but at the tip of the support portion 422 branched from the arm 41. For this reason, the creasing part 421 can be rotated substantially perpendicularly to the field. Thereby, resistance by creasing part 421 can be suppressed and the load on the run of rice transplanter 1 can be reduced more.

  As shown in FIG. 6C, the edge marker 43 includes a rod-shaped portion 431 and a mark portion 432. The rod-shaped part 431 is formed of an elastic member. Further, the mark portion 432 is fixed to the tip of the rod-shaped portion 431. The mark portion 432 is colored with a conspicuous color such as red or orange, for example. Note that the edge marker 43 may not have the mark portion 432.

  The heel marker 43 is placed on the heel marker attachment portion 411 of the arm 41 with a second storage position P21 shown in FIGS. 6A and 6B and a second use position P22 shown in FIG. , Is attached to be rotatable. In the second storage position P <b> 21, the edge marker 43 extends along the arm 41 and toward the base of the arm 41. In addition, when the arm 41 is in the first use position P12 at the second use position P22, the collar marker 43 extends further laterally from the collar marker attaching portion 411.

  The arm 41 has a first guide groove 413 and a second guide groove 414. The first guide groove 413 is disposed closer to the root side than the brim marker attaching portion 411. Further, as shown in FIGS. 6A and 6B, the first guide groove 413 fits the rod-shaped portion 431 of the collar marker 43 inside, and places the collar marker 43 in the second storage position P21. Fix it. As a result, when the heel marker 43 is not used, the heel marker 43 can be stored without being removed from the arm 41. That is, the border marker 43 can be stored integrally with the rice transplanter. Therefore, when performing the rice planting work, it is not necessary to prepare the dredge marker 43 separately from the rice transplanter.

  The arm 41 of this embodiment has two first guide grooves 413. Thereby, in the 2nd accommodation position P21, the edge marker 43 is fixed more reliably. As a result, positional deviation and shaking of the heel marker 43 when the heel marker 43 is not used are suppressed. Therefore, it is hard to get in the way when the close-up marker 43 drives the rice transplanter during storage.

  The second guide groove 414 is disposed on the distal end side with respect to the collar marker attaching portion 411. Then, as shown in FIG. 6C, the second guide groove 414 fits the rod-shaped portion 431 of the collar marker 43 inside, and fixes the collar marker 43 at the second use position P22. Thereby, when using the collar marker 43, the collar marker 43 can be fixed in an appropriate direction without adjusting the angle of the collar marker 43. That is, the preparation of the border marker 43 can be performed quickly. Therefore, the efficiency of rice planting work is improved.

  Now, the rice planting process using the border marker 43 will be described. FIG. 7 is a schematic view showing a rice planting process by the rice transplanter 1.

  In the method shown in FIG. 7, as the first step, the planting is performed while planting with the planting apparatus while aligning the mark portion 432 of the heel marker 43 with the heel. Thereby, seedlings can be planted in the region T1 adjacent to the region A1 without running the rice transplanter 1 in the region A1 from the border to the distance W of the width W for one step of the rice transplanter 1. Thereby, the rice transplanter 1 can be made to travel to the area A1, and the pre-process for forming a streak as a mark in the area T1 passing in the first process can be omitted. Therefore, rice planting work can be made efficient.

  In the first step, the arms 41 of both the left and right markers 36 are arranged at the first use position P12, and creasing is performed using both the right and left creasing markers 42. As a result, a streak is formed at the center between the region A1 to be planted in the final step and the region T2 to be passed in the next second step. In addition, the mark portion 432 of the collar marker 43 can be aligned with the collar marker 43 by setting the collar marker 43 of the marker 36 on the collar side to the second use position P22.

  After the first step, the collar marker 43 on the heel side is stored in the second storage position P21, and both the left and right arms 41 are stored in the first storage position P11. And in area | region A2, a rice transplanter turns. The region A2 is a region from the end of the traveling direction of the first process to the distance of the width W for one process of the rice transplanter.

  Next, as a second step, seedlings are planted in the region T2. In the second step, the arm 41 of the marker 36 on the region T3 side that passes in the next third step is arranged at the first use position P12. Thereby, the rice transplanter 1 forms the mark used as a mark in the center of area | region T3, planting in area | region T2. In this way, the planting process is repeated while reciprocating the rice transplanter 1, and rice planting is performed while leaving the regions A1 to A4 each having a width W.

  Thus, since the rice transplanter 1 has the border marker 43, since a previous process can be abbreviate | omitted, rice planting work can be made efficient. Moreover, since the operation | work which switches the border marker 43 to the 2nd storage position P21 and the 2nd use position P22 can be performed rapidly as above-mentioned, a rice planting operation | work can be made still more efficient.

<4. Configuration of automatic supply section>
Next, a detailed configuration of the automatic supply unit 31 will be described. FIG. 8 is a partial cross-sectional view of the automatic supply rail 311. In FIG. 8, the position of the seedling box when placed on the automatic supply rail 311 is indicated by a broken line. FIG. 9 is a partial longitudinal sectional view of the planting device 3. As described above, the automatic supply unit 31 includes the automatic supply rail 311 and the transport mechanism 312. As shown in FIG. 2, the automatic supply rail 311 of this embodiment includes an upper rail 51 and a lower rail 52. Two seedling boxes can be placed on the upper rail 51. In addition, three seedling boxes can be placed on the lower rail 52.

  The vicinity of the downstream end of the upper rail 51 extends toward the downstream end of the lower rail 52. As a result, the seedling box is smoothly supplied from the upper rail 51 to the downstream side of the lower rail 52. Further, the vicinity of the downstream end of the lower rail 52 extends obliquely toward the upper end of the seedling stage 32. Therefore, the seedling box is smoothly supplied from the lower rail 52 to the seedling mounting base 32.

  As shown in FIG. 8, each of the automatic supply rails 311 has a center rail 53 and a pair of side rails 54. The side rail 54 is formed in a U shape by a bottom plate portion 541, a side plate portion 542, and an upper plate portion 543. When the seedling box is placed on the automatic supply rail 311, the bottom of the seedling box comes into contact with the upper surfaces of the central rail 53 and the bottom plate part 541. Further, when the seedling box is placed on the automatic supply rail 311, the side plate portion 542 extends along the side surface of the seedling box, and the upper plate portion 543 covers the upper portion near the side portion of the seedling box.

  As illustrated in FIG. 3, the transport mechanism 312 includes five switch sensors 611 to 615 and four drive units 621 to 624. The switch sensors 611 to 615 are sensors for detecting whether or not there is a seedling box at a predetermined position on the automatic supply rail 311 or the seedling mounting base 32. As illustrated in FIG. 3, when the automatic supply unit 31 is operated, the control unit 10 controls the operations of the drive units 621 to 624 based on detection signals from the switch sensors 611 to 615.

  As shown in FIG. 2, each of the first switch sensor 611, the second switch sensor 612, and the third switch sensor 613 is disposed on one of the left and right side rails 54 of the automatic supply rail 311. The fourth switch sensor 614 is disposed near the upper end of the seedling table 32. The fifth switch sensor 615 is disposed on the lower side of the seedling placing table and above the seedling extracting unit 33.

  The first drive unit 621, the second drive unit 622, and the third drive unit 623 are disposed in the vicinity of the first switch sensor 611, the second switch sensor 612, and the third switch sensor 613, respectively. The fourth drive unit 624 is disposed near the upper end of the seedling stage and below the fourth switch sensor 614.

  As shown in FIG. 8, each of the driving units 621 to 624 includes a pair of sprockets 631 attached to the side rails 54 on both sides of the automatic supply rail 311, and a motor 632 that drives each sprocket 631. The transport mechanism 312 rotates the sprocket 610 while engaging the plurality of claws with the holes provided at the edge of the seedling box, so that the seedling box placed on the automatic supply rail 311 or the seedling stage 32 is removed. transport.

  Next, the detailed shape of the downstream end of the automatic supply rail 311 will be described. FIG. 9 is a partial cross-sectional view of the planting device 3 as viewed from the left-right direction. As shown in FIG. 9, the seedling stage 32 has a bottom portion 321 and a roof portion 322. The roof portion 322 is disposed above the vicinity of both end portions of the bottom portion 321.

  When the fifth switch sensor 615 does not detect the seedling box at a predetermined position, the automatic supply unit 31 transfers the seedling box from the automatic supply rail 311 to the seedling stage 32. At this time, the first driving unit 621 and the fourth driving unit 624 transport the seedling box rearward and upward, so that the seedling box is transferred from the downstream end of the automatic supply rail 311 to the seedling mounting stage 32. Then, it is transported to the upper end side of the seedling stage 32. Before the transfer, the direction of the seedling box is determined by being guided by the side rail 54. After the transfer, the seedling box is guided by the edge of the seedling box passing under the roof portion 322 provided on the seedling mounting table 32 and transported to the upper end side of the seedling mounting table 32. Therefore, it is preferable that the automatic supply rail 311 and the roof portion 322 are close to each other. If it does so, when a seedling box transfers from the automatic supply rail 311 to the seedling stand 32, the direction of a seedling box will shift | deviate and the transfer defect will be suppressed.

  The seedling box contains a plurality of pot seedlings. The leaf part of the pot seedling may spread upward from the root part of the pot seedling. The upper plate part 543 of the automatic supply rail 311 and the roof part 322 of the seedling mounting base 32 are configured to cover the upper part of the edge part of the seedling box. That is, the upper plate portion 543 and the roof portion 322 do not overlap with the root portion of the pot seedling in the vertical direction. When the seedling box is placed on the automatic supply rail 311 or when the seedling box is transported near the roof portion 322, the upper plate portion 543 and the roof portion 322 are at a height near the root portion of the pot seedling. Because it is located and does not overlap with the root of the pot seedling in the vertical direction, it is difficult to contact the pot seedling.

  On the other hand, when the seedling box is transported on the seedling stage 32, depending on the height of the pot seedling, the leaf part of the pot seedling comes into contact with the central rail 53 of the automatic supply rail 311 and the lower surface of the bottom plate part 541. Further, when the leaf part of the pot seedling spreads upward from the root part, the leaf part of the pot seedling may contact the lower surface of the upper plate part 543. Thus, when the pot seedling leaves contact the automatic supply rail 311, the pot seedling leaves may be damaged. Therefore, it is preferable not to make the distance between the downstream end of the automatic supply rail 311 and the bottom surface of the seedling stage 32 close to each other and to realize smooth transfer of the seedling box.

  As shown in FIG. 9, the first end portion 551 that is the downstream end portion of the upper plate portion 543 and the second end portion 552 that is the downstream end portion of the side plate portion 542 are downstream of the bottom plate portion 541. It is located on the downstream side of the third end portion 553 that is the side end portion. Thereby, the guide of the seedling box by the side plate part 542 and the upper plate part 543 is ensured while ensuring the relative distance between the center rail 53 and the bottom plate part 541 that are easily in contact with the leaf part of the pot seedling and the bottom part 321 of the seedling mounting base 32. Function is enhanced. That is, the transfer of the seedling box becomes smooth while suppressing the leaf portion of the pot seedling from contacting the automatic supply rail 311.

  Further, as shown by a broken line in FIG. 9, the straight line connecting the first end portion 551 and the third end portion 553 is substantially parallel to the bottom portion 321 of the seedling stage 32 in the cross section viewed from the left-right direction. . In this way, the shortest distance between the lower surface of the upper plate portion 543 and the bottom portion 321 of the seedling stage 32 is substantially the same as the shortest distance between the lower surface of the central rail 53 and the bottom plate portion 541 and the bottom portion 321. As a result, the guide function of the seedling box by the side plate portion 542 and the upper plate portion 543 is further enhanced without increasing the number of contact points with the automatic supply rail 311 in the leaf portion of the pot seedling. That is, the transfer of the seedling box becomes smoother.

  The automatic supply unit 31 includes a connection plate 313 that fixes the automatic supply rail 311 and the seedling table 32. The connection plate 313 fixes the vicinity of the second end portion 552 of the side plate portion 542 and the seedling mounting table 32. By fixing the vicinity of the second end portion 552 of the side plate portion 542, a relative positional shift between the vicinity of the end portions on the downstream side of the side plate portion 542 and the upper plate portion 543 and the seedling mount 32 is suppressed. Thereby, the transfer of the seedling box from the automatic supply rail 311 to the seedling stage 32 is further smoothed.

<5. Warning method for abnormal occurrence>
Subsequently, a warning method when an abnormality occurs in the planting device 3 during the rice planting operation will be described. The main causes of abnormality of the planting device 3 at the time of rice planting work are poor automatic supply and missing stock.

  The automatic supply failure is a state in which the automatic supply unit 31 is not normally supplying the seedling box to the seedling stage 32. As shown in FIG. 3, the control unit 10 determines whether the automatic supply failure state is present depending on whether the detection signals from the switch sensors 611 to 615 normally correspond to the operation control signals output to the drive units 621 to 624. Judge whether or not.

  Examples of automatic supply failures include out of seedling boxes and transfer failures. For example, when all the five switch sensors 611 to 615 of the automatic supply unit 31 do not detect the seedling box, the control unit 10 determines that the seedling box has run out. In addition, the first switch sensor 611 detects the seedling box, that is, in a state where the seedling box is arranged near the downstream end of the automatic supply rail 311, the first driving unit 621 and the fourth driving unit. 624 is driven to start transporting the seedling box backward and upward. Thereafter, if the first switch sensor 611 does not detect the seedling box within a predetermined time, and the fourth switch sensor 614 disposed near the upper end of the seedling stage detects the seedling box, the control unit 10 Judges that the transfer of the seedling box was successful. On the other hand, when the above-mentioned conditions are not satisfied within a predetermined time, the control unit 10 determines that the seedling box has been transferred incorrectly.

  Thus, the planting apparatus 3 of this embodiment plays the role of the seedling box automatic supply sensor in which each switch sensor 611 to 615 of the automatic supply unit 31 detects the supply state of the seedling box.

  On the other hand, a missing line is a planting failure in which pot seedlings cannot be planted normally in rice planting operations. In many cases, the missing strain is caused by a conveyance failure of the seedling box in the vicinity of the seedling extraction unit 33. Therefore, as shown in FIG. 2, in addition to the push-out mechanism 331, the seed take-out part 33 of the present embodiment includes a push-out sensor 332 that detects the operation of the push-out mechanism 331, and a seedling box conveyance failure near the seed take-out part 33. And a seedling box sensor 333.

  The push-out mechanism 331 pushes the pot seedling out of the seedling box by moving a plurality of pins back and forth at a predetermined position. The push-out sensor 332 detects the forward / backward movement of the plurality of pins every time and transmits a detection signal to the control unit 10. The pot seedling taken out from the seedling box by the push-out mechanism 331 is transported by a predetermined transport mechanism and is planted in the field by the planting claws 341 of the transplanting section 34.

  The seedling box sensor 333 is a sensor that detects conveyance of the seedling box on the downstream side of the pushing mechanism 331. In the seedling box, the empty part from which the pot seedling has been taken out by the push-out mechanism 331 is sequentially transported to the downstream side. When the empty portion of the seedling box passes near the seedling box sensor 333, the seedling box sensor 333 is rotated by contacting the seedling box moving to the downstream side. Thereby, the seedling box sensor 333 detects the conveyance state of the seedling box on the downstream side of the push-out mechanism 331.

  The control unit 10 checks the detection signal from the seedling box sensor 333 while counting the number of pin extrusions based on the detection signal from the extrusion sensor 332. If the seedling box sensor 333 cannot detect the feeding of the seedling box even if the number of push-outs of the pin exceeds a preset number, the control unit 10 determines that a stock loss has occurred. As described above, in the present embodiment, the extrusion sensor 332 and the seedling box sensor 333 constitute a stock removal sensor that detects a stock loss (that is, a conveyance failure in the row to be taken out of the seedling box).

  As shown in FIG. 5, the planting device 3 of the present embodiment has two right and left lamp panels 37, a right lamp panel 371 and a left lamp panel 372, on the front side. Each of the lamp panels 37 is disposed at a position that is easily visible from the vicinity of the driver's seat 231. The lamp panel 37 includes two self-sufficiency lamps 71 and two missing lamps 72 corresponding to two adjacent pot seedling transplanting units 30.

  Here, as shown in FIG. 5, the four pot seedling transplanting units 30 are referred to as a first unit 301, a second unit 302, a third unit 303, and a fourth unit 304 in order from the right. On the right side of the right lamp panel 371, a first self-sufficiency lamp 711 and a first missing lamp 721 corresponding to the first unit 301 are provided. Further, on the left side of the right lamp panel 371, a second self-sufficiency lamp 712 and a second missing lamp 722 corresponding to the second unit 302 are provided. Similarly, a third self-sufficient lamp 713 and a third missing lamp 723 corresponding to the third unit 303 are provided on the right side of the left lamp panel 372. Further, on the left side of the left lamp panel 372, a fourth self-sufficiency lamp 714 and a fourth missing lamp 724 corresponding to the fourth unit 304 are provided.

  When the controller 10 detects an automatic supply failure of a seedling box in a pot seedling transplanting unit 30 based on signals from the switch sensors 611 to 615 that are seedling box automatic supply sensors, the self-supply corresponding to the pot seedling transplanting unit 30 is detected. The defective lamp 71 is lit. Further, when the control unit 10 detects a conveyance failure of the seedling box in a certain pot seedling transplanting unit 30 based on the signals from the push-out sensor 332 and the seedling box sensor 333, the missing stock lamp 72 corresponding to the pot seedling transplanting unit 30 is detected. Lights up.

  As described above, since each of the self-sufficiency lamps 71 and each of the missing plant lamps 72 and the corresponding pot seedling transplanting units 30 are arranged at the corresponding positions on the left and right, any pot seedling transplanting unit 30 has an abnormality. It is easy to confirm whether it occurred. Further, since the lamp is provided for each cause of the abnormality, it is easy to identify the abnormal part. Thereby, the interruption time of the operation | work by abnormality of the rice transplanter 1 can be shortened in the rice planting operation. As a result, the rice planting work can be made more efficient.

  In the present embodiment, when the control unit 10 detects an automatic supply failure or a conveyance failure of the seedling box, the self-sufficiency failure lamp 71 or the missing stock lamp 72 provided in the lamp panel 37 is turned on, and the driver seat 231 The warning lamp 234 arranged in front is turned on, and the warning buzzer 12 sounds. Thereby, the worker sitting in the driver's seat 231 can quickly recognize the abnormality. Therefore, it is possible to prevent the occurrence of further abnormality by driving the rice transplanter in the abnormal state. As a result, the rice planting work can be made more efficient.

<6. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  In the above embodiment, the earth leveling plate is a fork-like plate extending obliquely downward from the front toward the rear, but the present invention is not limited to this. The earth leveling plate may be, for example, a plate that does not have a fork-shaped notch.

  In the above-described embodiment, the self-sufficiency defective lamp, the missing stock lamp, and the warning lamp are lit when an abnormality occurs, but may be blinked instead of being lit.

  Moreover, although the rice transplanter of said embodiment was an 8-row rice transplanter which has eight planting claws, the rice transplanter of this invention is not restricted to an 8-row rice transplanter. For example, the present invention may be applied to a 4-row rice transplanter.

  Moreover, about the detailed structure of a rice transplanter, you may differ from the shape shown by each figure of this application. Moreover, you may combine suitably each element which appeared in said embodiment and modification in the range which does not produce inconsistency.

DESCRIPTION OF SYMBOLS 1 Rice transplanter 3 Planting apparatus 10 Control part 20 Wheel 30 Pot seedling transplanting unit 31 Automatic supply part 32 Seedling stand 33 Seedling removal part 34 Transplanting part 35 Leveling part 36 Marker 37 Lamp panel 41 Arm 42 Muscle marker 43 Edge marker 71 Self-sufficiency lamp 72 Missing lamp 234 Warning light 311 Automatic supply rail 313 Connection plate 332 Extrusion sensor 333 Seedling box sensor 341 Planting claw 351 Float 352 Earth leveling plate 411 Edge marker mounting portion 413 First guide groove 414 2nd Guide groove 431 Bar-shaped portion 432 Mark portion 541 Bottom plate portion 542 Side plate portion 543 Upper plate portion 551 First end portion 552 Second end portion 553 Third end portion 611, 612, 613, 614, 615 Switch sensor P11 First storage position P12 First use position P21 Second storage position P22 Second use position

Claims (9)

A traveling unit having a plurality of wheels;
A planting device for planting seedlings in a field;
Have
The planting device is
A plurality of floats that ground the bottom surface following the farm scene,
A plurality of leveling boards having leveling claws projecting downward;
Have
The float and the leveling plate are alternately arranged in the left-right direction,
A rice transplanter in which the widest portion of each float that is widest in the left-right direction and the earth leveling plate are arranged in a straight line in the left-right direction. The rice transplanter according to claim 1,
An even number of floats;
An odd number of the earth leveling plates arranged between the left and right floats;
Have
The planting device is disposed behind the traveling unit,
The wheel of the traveling unit is
The front main wheel,
The rear main wheel,
A rear auxiliary wheel,
Including
Each of the front main wheel and the rear main wheel overlaps the earth leveling plate in the front-rear direction,
The rear auxiliary wheel overlaps with the float in the front-rear direction,
The earthmoving plate arranged in the center is a rice transplanter that does not overlap with any of the wheels in the front-rear direction. The rice transplanter according to claim 1 or 2,
The lower end of the earth leveling plate is disposed below the lower surface of the adjacent float,
The soil leveling plate swings up and down following the adjacent float. A rice transplanter according to any one of claims 1 to 3,
An arm rotatably attached to a first storage position extending upward from the rice transplanter body and a first use position extending laterally from the rice transplanter body;
A scoring marker fixed to the arm;
A heel marker, which is pivotally attached to a heel marker mounting portion provided near the tip of the arm, and
Have
When the arm is arranged at the first use position, the creasing marker forms a muscle that serves as a mark on the field,
The border marker is
A second storage position extending from the collar marker mounting portion along the arm and toward the base of the arm;
When the arm is in the first use position, the second use position extends further laterally from the collar marker mounting portion;
A rice transplanter that can rotate. The rice transplanter according to claim 4,
The border marker is
A rod-shaped portion formed of an elastic member;
A mark portion fixed to the tip of the rod-shaped portion;
Have
The arm is
A first guide groove that fits the rod-like portion inside and fixes the rod-like portion in the second storage position;
A second guide groove for fitting the rod-like portion inside and fixing the rod-like portion at the second use position;
Having a rice transplanter. The rice transplanter according to claim 4 or claim 5,
The creasing marker is a rice transplanter having a creasing portion that rotates below the arm when the arm is in the first use position. A rice transplanter according to any one of claims 1 to 6,
A controller for controlling each part of the planting device;
The planting device has a plurality of pot seedling transplanting units that take out pot seedlings from a seedling box and transplant the pot seedlings to a field,
The pot seedling transplanting unit is
A seedling stage for placing the seedling box;
From the seedling box placed on the seedling stage, the seedling taking-out unit that takes out the pot seedling one row at a time,
An automatic supply unit for supplying the seedling box to the seedling stage;
Have
The planting device has a self-sufficiency lamp and a stock loss lamp corresponding to each of the pot seedling transplanting units,
Each of the pot seedling transplanting units is
A seedling box automatic supply sensor that is provided in at least one of the seedling stage or the automatic supply unit and detects an automatic supply state of the seedling box,
The stock removal sensor, which is provided in the seedling extraction unit, detects a conveyance state in the extraction target row of the seedling box,
Have
When the control unit detects an automatic supply failure of the seedling box based on a signal from the seedling box automatic supply sensor, the corresponding self-sufficiency failure lamp lights or flashes,
When the control unit detects a conveyance failure of the seedling box based on a signal from the stock removal sensor, the corresponding stock removal lamp is lit or blinked. The rice transplanter according to claim 7,
The planting device has a lamp panel,
The said lamp panel is a rice transplanter provided with the two said self-sufficiency lamps and two lacking lamps corresponding to the two said pot seedling transplanting units adjacent to each other. A rice transplanter according to any one of claims 1 to 8,
The planting device is
A seedling stand for placing a seedling box of pot seedlings;
An automatic supply unit for supplying the seedling box to the seedling stage;
Have
The seedling stand extends obliquely downward from the upper end,
The automatic supply unit is
A bottom plate portion for holding a bottom portion of the seedling box;
A side plate portion extending along the side surface of the seedling box,
An upper plate covering the upper part near the side of the seedling box; and
An automatic supply rail consisting of
The vicinity of the downstream end of the automatic supply rail extends obliquely toward the upper end of the seedling platform,
The first end portion on the downstream side of the upper plate portion and the second end portion on the downstream side of the side plate portion are located downstream from the third end portion on the downstream side of the bottom plate portion,
In the cross section viewed from the left-right direction, the straight line connecting the first end and the third end is substantially parallel to the bottom of the seedling platform,
The rice transplanter further comprising a connection plate for fixing the vicinity of the second end portion of the side plate portion and the seedling mounting base.

Images