JP6502273B2 - Seedling takeout guide member and seedling transplanting machine having the same - Google Patents

Description

  The present invention relates to a seedling removal guide member for guiding a seedling scraped off from the lower end of a seedling mat downward, and a seedling transplanting machine including the same.

  A seedling transplanting machine is conventionally known that includes a seedling removal guide member for guiding a seedling scraped off from the lower end of a seedling mat downward. Patent Document 1 discloses a seedling transplanting machine (rice transplanter) provided with a seedling guide structure as a seedling takeout guiding member of this type. The seedling guide structure of this patent document 1 includes a seedling placing table on which a seedling mat is placed, a seedling placing table rail (guide rail) for supporting the seedlings at the lower end of the seedling mat in a row, and the seedling mat It is provided in a rice transplanter provided with the planting claw which takes out the seedling object for scraping off, and it plants on the ground. In the rice transplanter of Patent Document 1, the planting claw enters the lower end portion of the seedling mat, scrapes off the seedling to be scraped off, and the seedling outlet (seedling passing port) formed in the seedling platform rail Guide the seedling downward through. The above-mentioned seedling guide structure is provided around the seedling outlet.

  In more detail, the said seedling guide structure of the said patent document 1 becomes a structure provided with the left-right paired side guide body and a front seedling guide body. The left and right side guide bodies extend downward from the seedling outlet. The front seedling guide body is disposed between the front end edges of the pair of left and right side guide bodies, and extends downward substantially along the front end edges. With such a configuration, in the seedling guide structure of Patent Document 1, since the seedling scraped off by the planting claw is guided downward while being sandwiched by a pair of side guide bodies on the left and right, the posture of the seedling in the left and right direction Disturbance is regulated. Further, since the front surface of the seedling is guided downward along the front seedling guide body, forward disturbance of the posture of the seedling is also regulated.

JP 2000-175527 A

  However, in the configuration of Patent Document 1, when viewed from the side, the pair of left and right side guide bodies and the front seedling guide body extend long downward with almost no gap between them. (See FIG. 2 of Patent Document 1 above). Therefore, as the seedling is guided downward while being sandwiched between the left and right pair of side guide bodies and the front seedling guide body, the portion (block portion) of the seedling soil is the seedling guide Rubbing inside the structure could have been disturbed and adversely affect the planting accuracy of the seedlings. Furthermore, the block part of a seedling may be destroyed by rubbing with a seedling guide structure. Further, soil may be deposited inside the seedling guide structure, and the deposited soil may inhibit the transportation of the seedling and eventually cause poor planting.

  The present invention has been made in view of the above circumstances, and an object thereof is to hold a seedling in a stable state and guide it downward, and to be able to be planted on the ground in a state suitable for growing a seedling It is to

Means and effect for solving the problem

  The problem to be solved by the present invention is as described above, and next, means for solving the problem and its effect will be described.

  According to a first aspect of the present invention, a seedling removal guide member having the following configuration is provided. That is, this seedling removal guide member is a member attached to a seedling transplanting machine provided with a seedling loading stand, a guide rail, and a planting claw. A seedling mat is placed on the seedling platform. The guide rail supports the lower end of the seedling mat. The planting claw enters the lower end portion of the seedling mat, scrapes off the seedling to be scraped off, passes through the seedling passage formed in the guide rail, guides the seedling downward, and moves to the ground Implant. The seedling removal guide member includes a seedling front guide and a pair of left and right seedling side guides. The seedling front guide portion is disposed so as to protrude downward in front of a planting nail passage space which is a space through which the planting claw passes after the tip end passes through the seedling passage port, and the tip of the planting nail It is formed along the locus of The pair of left and right seedling side guide portions are disposed so as to protrude downward at the side of the planting claw passage space, and are connected to the seedling front guide portion at the base end thereof from the side When viewed, the gap with the seedling forward guide portion is formed to gradually increase toward the lower end.

  Thereby, the seedling which is held by the planting claw and guided downward travels between the pair of left and right seedling side guides. For this reason, the disorder of the horizontal direction of the attitude | position of scraped-off seedlings can be suppressed. At this time, the front of the seedling is guided downward along the seedling front guide. For this reason, it is possible to suppress forward inclination of the posture of the scraped seedlings. Furthermore, when viewed from the side, the distance between the pair of left and right seedling side guide portions and the seedling front guide portion increases as it goes downward. For this reason, the seedling which is held by the planting claws and guided downward is at a proximal end of the seedling take-out guide member with the soil portion (block portion) in contact with the pair of left and right seedling lateral guide portions Be hardened. Thereafter, as the seedling is guided downward, the portion where the pair of left and right seedling side guides contact the seedling gradually shifts toward the tip of the leaf, and the pair of left and right seedling side guides and the seedling By the resistance generated between them, it is possible to suppress that the holding angle of the seedling with respect to the planting claws becomes extremely large by the centrifugal force. Thus, the seedlings can be held in a stable posture by the planting claws and guided downward, and thus can be planted on the ground in an appropriate posture. Moreover, it can suppress that a seedling falls out from a planting claw by the frictional force which arises between a pair of seedling side direction guide parts on either side and a seedling. Further, when viewed from the side, the space between the seedling front guide and the pair of left and right seedling side guides spreads downward as it goes downward, so the soil is inside the seedling extraction guide member. It is easy to be discharged downward, and soil is less likely to be deposited inside the seedling removal guide member. Therefore, since adhesion of the soil to the seedlings can be prevented, the seedlings can be planted well.

  In the seedling removal guide member, preferably, the seedling front guide portion and the pair of left and right seedling side guide portions are integrally formed.

  This produces the following effects. That is, conventionally, a member for guiding the front surface of the seedling when it is held by the planting claw and transported to the ground, a member for guiding the left side surface of the seedling, and a member for guiding the right side surface of the seedling As it was provided separately, the assembly to the guide rail was complicated. In this respect, in this configuration, the member for guiding the front surface of the seedling held by the planting claw and transported to the ground is integrally molded with the member for guiding the side surface of the seedling, so that assembly is easy Become. In particular, the member for guiding the seedling contacts the seedling and wears the surface, so it needs to be replaced at the time of wear, but with this configuration, the work of taking out the seedling takeout guide member becomes easy, thus improving maintainability. .

  It is preferable to set it as the following structures in the said seedling extraction guide member. That is, the said seedling front guide part has a plate-shaped curved plate part curved along the locus | trajectory of the front-end | tip of the said planting claw. The lateral width of at least a part of the curved plate portion is larger than the distance between the pair of left and right seedling side guides.

  Thereby, it can suppress that the soil which collapsed from the block part of the seedling scraped off with the planting claw splashes toward the front of a seedling extraction guidance member. For this reason, it can suppress that soil accumulates on the member and apparatus (for example, float) arrange | positioned in the front downward direction of a seedling extraction guide member.

  It is preferable to set it as the following structures in the said seedling extraction guide member. That is, at the left and right center portions of the curved plate portion, a protruding portion that protrudes toward the rear is formed. The protrusion is elongated along a path of the tip of the planting claw.

  As a result, the planting claw can be moved downward along the projection, and the planted claw can be transported to the vicinity of the ground while restraining the seedling scraped off by the planting claw from falling from the planting claw.

  It is preferable to set it as the following structures in the said seedling extraction guide member. That is, in the seedling front guide portion, a rod-like guide rod is formed to extend downward along the trajectory of the tip of the planting claw from the lower end of the curved plate portion. The protrusion is formed in a shape continuous with the guide rod.

  Thereby, the seedling scraped off by the planting claw can be transported to the vicinity of the ground along the guide rod while suppressing the seedling from falling from the planting claw. Moreover, since guidance of a seedling is performed by the rod-shaped guide rod with a small contact area with a seedling, adhesion and deposition of the soil of the mat part of a seedling can be suppressed. Furthermore, since the shape is continuous between the protrusion and the guide rod, it is possible to smoothly transition from the guidance of the seedlings by the protrusions to the guidance of the seedlings by the guide rods.

  In the seedling removal guide member, it is preferable that both the seedling front guide portion and the pair of left and right seedling side guide portions be formed of resin.

  Thus, by forming the seedling removal guide member by a material having a large attenuation of vibration different from the conventional metal material, it is possible to prevent the situation where the seedling removal guide member is damaged due to the resonance phenomenon.

  According to a second aspect of the present invention, there is provided a seedling transplanting machine comprising the seedling removal guide member.

  As a result, the seedlings can be held in a stable posture by the planting claw and guided downward, and thus can be planted on the ground in an appropriate posture. Moreover, since it becomes difficult to deposit soil inside a seedling extraction guidance member, adhesion to the seedling of soil can be prevented and planting can be performed favorably.

The side view which shows the whole structure of a rice transplanter provided with the seedling extraction guidance member which concerns on one Embodiment of this invention. The top view which shows the whole structure of a rice transplanter. The side view explaining the rotation locus of a planting claw. The side view which shows the detailed composition of the lower end part circumference of a seedling loading stand. The perspective view which shows the structure of the seedling passage formed in a lower guide rail. The left side of the lower guide rail is shown in cross section. The perspective view which shows a mode that the seedling taking-out opening formation member was attached to the edge of the seedling passage port of FIG. The left side of the lower guide rail is shown in cross section. The perspective view which shows the detailed structure of a seedling taking-out opening formation member. The perspective view which shows the detailed structure of the seedling taking-out opening formation member when it sees at an angle different from FIG. Side surface sectional drawing which shows a mode when the seedling of the removal object is cut off from a seedling mat. The perspective view which shows the detailed structure of a seedling extraction guidance member. The perspective view which shows the detailed structure of a seedling extraction guide member when it sees at an angle different from FIG. The side view which shows a mode that scraped-off seedling is guided by a seedling extraction guidance member.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an overall configuration of a rice transplanter 1 provided with a seedling removal guide member 50 according to an embodiment of the present invention. FIG. 2 is a plan view showing the overall configuration of the rice transplanter 1. In FIG. 2, a schematic configuration around the seedling outlet N is shown in an enlarged manner in a two-dot chain circle. FIG. 3 is a side view illustrating the rotation trajectory of the planting claw 22. As shown in FIG.

  A rice transplanter (seedling transplanting machine) 1 provided with a seedling removal and guide member 50 according to an embodiment of the present invention is disposed at the rear of the traveling machine body 2 and the traveling machine body 2 as shown in FIGS. And a planting unit 3.

  The traveling body 2 includes a pair of left and right front wheels 4 and a pair of left and right rear wheels 5, and is configured to be capable of traveling by the driving force of the engine 10. That is, the driving force of the engine 10 is transmitted to the front wheels 4 and the rear wheels 5 through the transmission case 9. The engine 10 is mounted inside the hood 11. Further, at a position between the front wheel 4 and the rear wheel 5 in the front-rear direction of the traveling body 2, a driver's seat 6 on which the operator gets is provided. In front of the driver's seat 6, a steering handle 7 for the operator to steer the traveling vehicle 2 is disposed.

  The rice transplanter 1 is equipped with the control part of illustration abbreviation | omission. The said control part is comprised as a computer, and based on the signals, such as a sensor with which each part of the rice transplanter 1, was equipped, it is comprised so that each structure of the rice transplanter 1 may be controlled.

  The planting unit 3 is connected to the rear of the traveling machine body 2 via a lift link mechanism 12. Further, a PTO shaft 13 for outputting the driving force of the engine 10 to the planting unit 3 and an elevating cylinder 14 for driving the planting unit 3 up and down are disposed at the rear of the traveling machine body 2 .

  The lifting link mechanism 12 shown in FIG. 1 is configured by a parallel link structure including a top link 18 and a lower link 19 and the like. The lower link 19 is connected to a lift cylinder 14. With this configuration, the entire planting unit 3 can be vertically moved up and down by causing the elevating cylinder 14 to extend and contract.

  The planting unit 3 mainly includes a planting input case 26, a plurality (three) of planting units 20, a seedling platform 17, and a plurality of floats 16.

  The motive power input to the PTO shaft 13 from the engine 10 through the transmission case 9 is transmitted to the planting input case 26 shown in FIG. 1. Thus, the power transmitted from the engine 10 through the transmission case 9 is transmitted not only to the front wheels 4 and the rear wheels 5 but also to the planting input case 26 of the planting unit 3. The power transmitted from the planting input case 26 drives a planting unit 20 described later, and the seedling loading stand 17 is reciprocated.

  Each planting unit 20 includes a planting transmission case 27 and a rotation case 21. Power from the planting input case 26 is transmitted to the planting transmission case 27. Two rotation cases 21 are attached to each planting transmission case 27, and each rotation case 21 is configured to perform planting for one line by two pairs of planting claws 22.

  Specifically, when the rotation case 21 is rotationally driven by the power from the planting transmission case 27, the tip end portions of the two pairs of planting claws 22 have a looped rotation locus as shown in FIG. Is configured to draw and operate. When the tip end of the planting claw 22 moves from the top to the bottom, the seedlings are located at the lower end (the rear end in the present embodiment) of the seedling mat M placed on the seedling platform 17 described later. Seedlings to be scraped off) S is scraped from the seedling mat M and guided downward by the seedling removal guide member 50 while holding the soil portion (block portion) of the seedling S, the seedling S is put on the field It is configured to be implanted.

  As shown in FIG. 1, the seedling loading stand 17 is arrange | positioned at the front upper part of the planting unit 20, and the seedling mat M can be mounted. The seedling loading stand 17 is configured to be laterally feed movable (reversible in the lateral direction) in a reciprocating manner. In addition, the seedling loading stand 17 is configured to be able to intermittently and vertically transfer the seedling mat M downward at the reciprocating movement end of the seedling loading stand 17. By this structure, the seedling loading stand 17 can supply the seedling of the seedling mat M to each planting unit 20. Thus, in the rice transplanter 1, the seedlings can be sequentially supplied to each of the planting units 20, and the seedlings can be planted continuously.

  The float 16 shown in FIG. 1 is provided in the lower part of the planting part 3, and it is arrange | positioned so that the lower surface can contact the ground. When the float 16 contacts the ground, the field before planting seedlings is leveled.

  Subsequently, the configuration of the seedling stage 17 will be described in more detail with reference to FIGS. 1 to 4. FIG. 4 is a side view showing a detailed configuration around the lower end portion of the seedling loading stand 17.

  The upper part of the seedling loading stand 17 is supported by an upper guide rail (not shown) so that the seedling loading stand 17 can move in the left-right direction of the machine. Further, as shown in FIG. 4, the lower part of the seedling loading stand 17 is supported by the lower guide rail (guide rail) 28 so that the seedling loading stand 17 can be moved in the left-right direction of the machine. The upper guide rail and the lower guide rail 28 are disposed horizontally with their longitudinal direction directed in the left-right direction of the machine. In addition, the lower guide rail 28 of this embodiment is the lower end part of the seedling mat M mounted in the seedling loading stand 17, as shown in FIG. 3 (most downstream row-like seedling of a seedling vertical feeding conveyance direction) It also has a function as a seedling receiving part that supports

  The seedling loading stand 17 is configured to be able to reciprocate transversely feed by an unillustrated lateral feed mechanism, and to vertically intermittently convey the seedling mat M downward at the reciprocation end by the seedling vertical feed mechanism (not illustrated). Be done. The transverse feed mechanism and the seedling vertical feed mechanism of the seedling loading stand 17 are driven by the power transmitted from the planting input case 26 shown in FIG. As a result, while the seedling loading stand 17 is moved laterally for reciprocating movement, the seedling mat M on the seedling mounting stand 17 is intermittently when the seedling loading stand 17 reaches the reciprocating movement end (the return point of the reciprocating movement). It is vertically fed and conveyed downward.

  As shown in FIG. 1, the seedling loading stand 17 which exists in the back of the traveling body 2 is inclined and arrange | positioned so that a front part may be high and a rear part may become low. As shown in FIG. 2, a seedling mat mounting surface (mounting surface) A on which the seedling mat M can be mounted is formed on the top surface of the seedling loading stand 17. The seedling mat mounting surface A is constituted by a surface exposed to the side on which the seedling mat M of the seedling mat mounting surface forming member 30 and the lower rail frame 31 is placed. Since the rice transplanter 1 of this embodiment is a rice transplanter for six-row planting, six (six rows) seedling mat mounting surface forming members 30 are provided.

  The seedling vertical feed mechanism is provided at a portion of the seedling mat mounting surface forming member 30. As shown in FIG. 2, each seedling vertical feed mechanism includes an endless seedling vertical feed belt 29 disposed in a pair on the left and right so that a part of the seedling vertical feeding mechanism is exposed to the seedling mat mounting surface A. With the seedling mat M placed on each seedling mat mounting surface A, the seedling vertical feed belt 29 is driven to direct the seedling mat mounting surface A toward the seedling removal side (lower end side of the seedling loading stand 17) The seedling mat M is longitudinally fed and conveyed. As a result, the seedlings of the seedling mat M are scraped off by the planting claws 22 sequentially from the top side of the seedling longitudinal feed conveyance direction.

  In addition, the seedling loading stand 17 and the lower guide rail 28 can be displaced with respect to the rotation locus | trajectory of the planting claw 22. As shown in FIG. Specifically, the operator operates the seedling scraping amount adjustment lever (not shown) to keep the rotation locus of the planting claw 22 as it is, while integrally holding the seedling loading stand 17 and the lower guide rail 28 in FIG. The position relative to the planting claw 22 can be displaced by moving up and down in the direction of the arrow (along a guide rail not shown). Thereby, for example, by moving the seedling loading stand 17 and the lower guide rail 28 upward relative to the planting claw 22, the approach position of the planting claw 22 to the seedling mat M is lower than usual. It is possible to make the longitudinal length at which the seedlings are scraped at one time smaller than usual. Such a specification is used, for example, in order to make the number of seedlings to be scraped substantially equal to that in a normal case, for example, in the case of scraping seedlings from a seedling mat grown with high density.

  Below, the structure of the lower guide rail 28 as a guide rail and its periphery is demonstrated in more detail with reference to FIGS. 4-6. FIG. 5 is a perspective view showing a configuration of a seedling passage opening 28n formed in the lower guide rail 28. As shown in FIG. FIG. 6 is a perspective view showing a state where the seedling outlet forming member 35 is attached to the edge of the seedling passage port 28n of FIG.

  As shown in FIG. 4, a lower rail frame 31 extending horizontally horizontally is fixed to the lower part of the back surface of the seedling platform 17 (surface opposite to the side on which the seedlings are placed) using a bolt or the like not shown. It is done. A shoe 32 is fixed to the lower rail frame 31, and can be fitted to a fitting portion 28 a (described later) of the lower guide rail 28 via the shoe 32.

  As shown in FIG. 2, the lower guide rail 28 is a member extending horizontally and horizontally from the left reciprocating end of the seedling stage 17 to the right reciprocating end. The lower guide rail 28 is configured as a member made of metal (in this embodiment, made of aluminum) formed by extrusion molding. As shown in FIG. 4, the lower guide rail 28 is a row including the seedlings S to be scraped in the seedling mat M placed on the seedling mat mounting surface A (in other words, It is arranged to face the column). As shown in FIG. 5, a rectangular seedling passage opening 28 n is formed in a notched shape at a position facing the planting claw 22 in a longitudinal middle portion of the lower guide rail 28. Although only one seedling passage opening 28n is illustrated in FIG. 5, since the rice transplanter 1 of the present embodiment is six-row planted, six seedling passage openings 28n are formed in the lower guide rail 28. A seedling outlet forming member 35, which will be described in detail later, is attached to the edge of each seedling passage port 28n. Thus, as shown in FIG. 6, the seedling outlet N is formed, and when the seedling S scraped off by the planting claw 22 is taken out, the tip of the seedling S and the planting claw 22 is the seedling outlet N. pass. In this configuration, the planting claw 22 scrapes off the seedling S to be scraped off, and the tips of the scraped seedling S and the planting claw 22 pass through the seedling outlet N along the locus in FIG. 3. By moving the planting claw 22 so as to move, the seedling S can be transported to the field by a curved route.

  As shown in FIGS. 4 and 5, the lower guide rail 28 includes a pair of a fitting portion 28a, a seedling bottom receiving portion 28b, a connecting portion 28c, a seedling top receiving portion 28d, and a seedling passage port 28n. The notches 28e and 28e to be disposed and the groove 28f are mainly formed.

  The fitting portion 28 a is an elongated substantially rectangular parallelepiped portion extending horizontally and horizontally, and is formed in a shape that can be fitted into an elongated recess formed in the shoe 32. The lower rail frame 31 is slidable with respect to the fitting portion 28 a by the fitting portion 28 a being fitted to the rail portion of the lower rail frame 31 via the shoes 32, whereby the seedling loading stand 17 is It slides relative to the lower guide rail 28 and can be reciprocated.

  The seedling bottom surface receiving portion 28 b is a long, horizontally extending horizontally extending plate-like portion disposed at the lower end portion of the lower guide rail 28. The seedling bottom receiving part 28b is opposed to the bottom of a portion (hereinafter, may be referred to as a mat portion) formed in a mat shape by the floor soil and the roots on the top side of the seedling mat M in the vertical feeding direction. And has a receiving surface facing rearward and upward.

  The connecting portion 28 c is a long plate-like portion extending horizontally and horizontally. The connecting portion 28 c is configured to connect the fitting portion 28 a and an end on the upstream side in the vertical feeding direction of the seedling bottom receiving portion 28 b.

  The seedling head receiving portion 28d is a horizontally long horizontally extending plate-like portion extending from the lower end of the seedling bottom surface receiving portion 28b (the downstream end of the seedling bottom surface receiving portion 28b in the longitudinal feeding conveyance direction of the seedling mat M). As shown in FIG. 4, the seedling top receiving part 28 d extends in a direction in which the angle between the seedling bottom receiving part 28 b and the seedling bottom receiving part 28 b is acute when viewed in the direction of the lateral feed movement of the seedling loading stand 17. . The seedling head receiving portion 28d is disposed to face the side surface of the seedling at the head of the seedling mat M in the vertical feed conveyance direction, and can receive the head seedling. At the rear of the seedling front receiving portion 28d, a step portion 28s extending horizontally horizontally is formed.

  As shown in FIG. 5, the seedling passage opening 28n is a notch formed so as to extend to the seedling top receiving portion 28d, the seedling bottom surface receiving portion 28b, and the connecting portion 28c. The seedling passage opening 28n is formed in a rectangular shape so as to extend from the tip of the seedling top receiving portion 28d to the middle portion of the connecting portion 28c. As will be described in detail later, a seedling outlet formation member 35 is attached to the edge of the seedling passage 28n (see FIG. 6).

  The notches 28e and 28e shown in FIG. 5 are circular notches formed in the seedling top receiving part 28d. Two notches 28e and 28e are formed for one seedling passage port 28n, and are disposed symmetrically on the left and right sides of the seedling passage port 28n.

  The groove portion 28 f is formed to protrude in an L shape from the bottom surface of the seedling front receiving portion 28 d. The groove 28f is formed in a shape that is long in the left-right direction over the entire area of the seedling front receiving portion 28d. The groove portion 28 f is formed in a slit shape in which the side facing the tip end side of the seedling front receiving portion 28 d is opened.

  In the lower guide rail 28 configured as described above, the seedlings on the lower end portion of the seedling mat M are supported in a row as shown in FIG. 3 by the seedling bottom surface receiving portion 28b and the seedling top receiving portion 28d. When the planting claw 22 enters the seedling S to be scraped of the seedling mat M placed on the seedling mat mounting surface A, the seedling S to be scraped is pushed by the planting claw 22 The bottom surface (bottom surface of the mat portion) of the seedling in the vicinity of the seedling S to be scraped out of the seedlings on the leading side in the vertical feed conveyance direction of the seedling mat M is received by the seedling bottom surface receiving portion 28b. In addition, regarding the portion of the seedling S to be scraped, the mat portion does not actually contact the seedling bottom receiving portion 28b because it faces the seedling passage port 28n (seedling seedling outlet N). By supporting the mat portion on the seedling bottom surface receiving portion 28b (and the mat receiving portions 40bl and 40br described later), the posture of the seedling S to be scraped is also appropriately adjusted.

  Next, the configuration of the seedling outlet forming member 35 will be described in detail with reference to FIGS. 6 to 8. FIG. 7 is a perspective view showing a detailed configuration of the seedling outlet forming member 35. As shown in FIG. FIG. 8 is a perspective view showing a detailed configuration of the seedling outlet forming member 35 when viewed at an angle different from that of FIG. 7.

  The seedling outlet formation member 35 shown in FIGS. 7 and 8 is a member that forms a seedling outlet N for taking out the seedling S scraped off by the planting claw 22. The seedling outlet forming member 35 is inserted into the groove 28f of the lower guide rail 28 and fixed by tightening a bolt (fastening member) 45 shown in FIG. 4 to the fitting portion 28a of the lower guide rail 28. Thereby, as shown in FIG. 6, the seedling outlet formation member 35 is attached so as to fill the edge of the seedling passage opening 28n. The seedling outlet forming member 35 of the present embodiment is made of a wear resistant material such as stainless steel.

  The seedling outlet formation member 35 includes a main body 40 and a removal guide portion 41.

  As shown in FIG. 7 and FIG. 8, the main body 40 has a mounting flat portion 40a, a pair of mat receiving portions 40bl and 40br, a pair of mat leading end portions 40cl and 40cr, and a pair of folded portions 40dl and 40dr, And a pair of positioning projections 40s and 40s.

  The mounting flat portion 40a is a substantially rectangular plate-like portion. A pair of mounting holes 40h, 40h are formed side by side in the mounting flat portion 40a, and the shaft portions of the bolts 45 can be inserted into the mounting holes 40h. From the rear end of the mounting flat portion 40a, a curved surface portion 40k extends downward in a gentle curve. The curved surface portion 40k is connected to a support boundary guide portion 41a of the takeout guide portion 41 described later, and a seedling mat support portion 35s is configured at this connection portion. The curved surface portion 40k is connected to the mat receiving portion 40bl and the right side mat receiving portion 40br.

  A pair of mat receiving parts is comprised by left mat receiving part 40bl and right mat receiving part 40br.

  The left mat receiving portion 40bl is connected to the left side of the rear end of the mounting flat portion 40a via the curved surface portion 40k and extends downward. The left mat receiving portion 40bl forms a plane substantially perpendicular to the mounting flat portion 40a. The right mat receiving portion 40br is connected to the right side of the rear end of the mounting flat portion 40a via the curved surface portion 40k and extends downward. The right mat receiving portion 40 br forms a plane substantially perpendicular to the mounting flat portion 40 a. The left side mat receiving portion 40bl and the right side mat receiving portion 40br are arranged in pairs on both sides of the seedling outlet N, and support the seedling at the lower end portion of the seedling mat M similarly to the seedling bottom surface receiving portion 28b. be able to.

  The pair of mat leading end receiving portions is composed of a left side mat leading end receiving portion 40cl and a right side mat leading end receiving portion 40cr. The left mat leading end receiving portion 40cl extends rearward and upward from the lower end of the left mat receiving portion 40bl. Specifically, when viewed in the direction of the lateral feed movement of the seedling loading stand 17, the left mat leading end receiving portion 40cl extends in a direction in which the angle formed with the left mat receiving portion 40bl is an acute angle. The right mat top receiving portion 40cr extends rearward and upward from the lower end of the right mat receiving portion 40br. Specifically, when viewed in the direction of the lateral feed movement of the seedling loading stand 17, the right mat top receiving portion 40cr extends in a direction in which the angle formed with the right mat receiving portion 40br is an acute angle. The left mat leading end receiving portion 40cl and the right mat leading end receiving portion 40cr are disposed in pairs on both sides of the seedling outlet N, and the seedling at the lower end of the seedling mat M is the same as the seedling leading end receiving portion 28d. It can be received.

  The pair of turn-back portions is composed of a left turn-back portion 40dl and a right turn-back portion 40dr. The left turnup portion 40dl extends horizontally from the rear end of the left mat leading end receiving portion 40cl toward the left side by a slight distance, and then its front end portion extends forward and downward. That is, the left side folded portion 40 dl is formed in a shape folded outward (left side) at the rear end of the left mat leading end receiving portion 40 cl. A stepped portion 40p is formed in a portion after the left side folded portion 40dl is folded. The right turnup portion 40dr extends horizontally a short distance from the rear end of the right mat leading receiving portion 40cr to the right, and then its front end portion extends forward and downward. That is, the right side folded portion 40dr is formed in a shape folded outward (right side) at the rear end of the right side mat leading end receiving portion 40cr. A stepped portion 40p is formed in a portion of the right side folded portion 40dr after being folded.

  A rectangular notch whose one side (rear side) is open is formed between the left side mat receiving portion 40bl and the left side mat top receiving portion 40cl, and the right side mat receiving portion 40br and the right side mat top receiving portion 40cr. Be done. The seedling outlet N which takes out the seedling S scraped off by the planting claw 22 is arrange | positioned inside this notch (the detail is mentioned later).

  A pair of positioning projections 40s and 40s shown in FIG. 7 are provided in the portion immediately before the folding of the pair of folding portions 40dl and 40dr. The positioning projection 40s protrudes in a short cylindrical shape substantially perpendicular to the plane formed by the folded portions 40dl and 40dr. The positioning projection 40s can be inserted into the notch 28e formed in the lower guide rail 28.

  Further, the seedling outlet forming member 35 includes a takeout guide portion 41 attached to the main body 40. The takeout guide portion 41 has an end face that faces the rear upper side or the front upper side, and the seedling takeout opening N is formed in the inner side of the end face. The takeout guide portion 41 guides the seedling S scraped off by the planting claw 22 and taken out through the seedling taking outlet N. The takeout guide portion 41 is fixed to the main body 40 by welding or the like.

  The takeout guide portion 41 includes a support boundary guide portion 41a and a pair of reception boundary guide portions 41l and 41r. The takeout guide portion 41 of this embodiment is made of a wear resistant material such as stainless steel.

  The support boundary guide portion 41a shown in FIG. 8 is a flat plate-like portion extending downward and forward from the portion where the main body 40 branches left and right. The support boundary guide portion 41 a is located above the seedling S that has passed through the seedling outlet N, and plays a role of guiding the front surface of the seedling S. The rear end surface of the support boundary guide portion 41a is connected to the curved surface portion 40k of the main body 40. Further, a seedling mat support portion 35s is formed on the rear end surface of the support boundary guide portion 41a.

  A pair of receiving boundary guide parts is comprised by the left receiving boundary guide part 41l and the right receiving boundary guide part 41r.

  The left reception boundary guide portion 41l is a substantially L-shaped flat plate portion continuously provided to the right end of the left mat reception portion 40bl, the right end of the left mat front reception portion 40cl, and the left end of the support boundary guide portion 41a. . The left receiving boundary guide portion 41l forms a plane substantially perpendicular to the left mat receiving portion 40bl, the left mat leading end receiving portion 40cl, and the supporting boundary guide portion 41a, and tapers downward as shown in FIG. It extends in the shape of That is, the left receiving boundary guide portion 411 extends downward from the boundary between the seedling outlet N and the left mat receiving portion 40bl. The left receiving boundary guide portion 41 l is located on the left side of the seedling S that has passed through the seedling outlet N, and serves to guide the left side surface of the seedling S.

  The right receiving boundary guide portion 41r is a substantially L-shaped flat plate portion continuously provided to the left end of the right mat receiving portion 40br, the left end of the right mat top receiving portion 40cr, and the right end of the supporting boundary guide portion 41a. . The right receiving boundary guide portion 41r forms a plane substantially perpendicular to the right mat receiving portion 40br, the right mat leading end receiving portion 40cr, and the supporting boundary guide portion 41a, as shown in FIGS. 7 and 9. It extends in a tapered shape. That is, the right receiving boundary guide portion 41r extends downward from the boundary between the seedling outlet N and the right mat receiving portion 40br. The right receiving boundary guide portion 41r is located on the right side of the seedling S that has passed through the seedling outlet N, and serves to guide the right side surface of the seedling S.

  The seedling outlet N is formed such that the rear side is open, and the seedling mat support portion 35s is located in the part connecting the left side mat receiving portion 40bl and the right side mat receiving portion 40br opposite to the open side. ing. The seedling mat support portion 35s is arranged to straddle a part of the curved surface portion 40k of the main body 40 and the rear end surface of the support boundary guide portion 41a of the takeout guide portion 41. As shown in FIG. 4 and FIG. 9 described later, when the seedling outlet forming member 35 is attached to the lower guide rail 28, the seedling mat support portion 35s is the lower end AE of the seedling mat mounting surface A of the seedling loading stand 17. The seedling mat is disposed at a position on the downstream side in the vertical feeding conveyance direction. At the same time, the seedling mat support portion 35s is disposed at a position upstream of the seedling outlet N in the seedling mat longitudinal feed conveyance direction.

  The seedling outlet forming member 35 configured in this manner can be fixed to the lower guide rail 28 from the rear lower side. Specifically, the tips of the pair of folded portions 40dl and 40dr of the main body 40 are inserted into the groove 28f, and at the same time, the positioning projections 40s and 40s are inserted into the notches 28e and 28e. Thus, the seedling outlet forming member 35 can be positioned with respect to the lower guide rail 28.

  In this state, align the mounting holes 40h and 40h of the mounting flat portion 40a with the screw holes (not shown) formed on the bottom of the fitting portion 28a of the lower guide rail 28, and insert the bolt 45 The seedling outlet forming member 35 can be attached to the lower guide rail 28 by screwing and tightening the screw holes. In addition to the seedling outlet formation member 35, the seedling take-out guide member 50 is also attached to the lower guide rail 28 by co-fastening, which will be described later.

  The seedling S to be scraped which is disposed above the seedling outlet N of the seedling outlet forming member 35 configured as described above is subjected to a shearing force as shown by an arrow in FIG. It is cut off from. FIG. 9 is a side cross-sectional view showing how the seedlings S to be scraped off are cut off from the seedling mat M. As shown in FIG.

  More specifically, the bottom surface (bottom surface of the mat portion) of the seedling immediately above the seedling S to be scraped is supported by the seedling mat support portion 35s. Although the seedlings are scraped in order from the left and right ends of the seedling mat M to the other end by the lateral feed reciprocating movement of the seedling loading stand 17 described above, the bottom of the seedling on the immediate side of the seedling S to be scraped is the left side It is supported by the upper surface of the mat receiving portion 40bl and the left receiving boundary guide portion 41l, or the upper surface of the right mat receiving portion 40br and the right receiving boundary guide portion 41r. In this state, as shown in FIG. 9, when the planting claw 22 enters the seedling S to be scraped, the seedling S receives a force F1 acting from the planting claw 22 in the planting claw approach direction. At the same time, the seedling S receives a force F2 acting from the seedling mat support 35s in a direction opposite to the planting claw approach direction. Although not shown by an arrow in FIG. 9, for the seedling S, the upper surface of the left mat receiving portion 40bl and the left receiving boundary guide portion 41l or the right mat receiving portion 40br and the right receiving boundary guide portion 41r. The upper surface also receives a force acting in the direction opposite to the planting claw approach direction. Thereby, a shearing force acts on the seedling S to be scraped, and the seedling S is cut from the seedling mat M.

  By the way, in the conventional seedling transplanting machine, the seedling receiving frame for supporting the lower end of the seedling mat is provided at the lower end of the seedling platform on which the seedling mat is placed, and the seedling receiving frame is planted It is known that a seedling outlet is formed in which a nail is introduced to take out a target to be scraped off. In this type of seedling transplanting machine, generally, when scraping and removing the seedling, the planting claws are made to enter while supporting the seedling mat at the position of the lower end of the seedling platform. Therefore, there was a relatively long distance between the position where the seedling mat is supported from below and the approach position of the planting claw. As a result, the lower end of the seedling mat may be fluttered. In addition, due to the same reason, there was a case where it was not possible to concentrate stress sufficiently when cutting off the seedling to be scraped off from the seedling mat by a shearing force.

  In this respect, in the rice transplanter 1 of the present embodiment, as shown in FIG. 9, the seedlings are placed downstream of the lower end AE of the seedling mat mounting surface A in the seedling vertical feed conveyance direction, Since the seedling mat support portion 35s is disposed at the position on the upstream side in the vertical feeding conveyance direction, the lower end portion of the seedling mat M is supported from below by the seedling mat support portion 35s. Therefore, the lower end portion of the seedling mat M is less likely to flutter than the conventional configuration. In addition, the distance between the position where the seedling mat M is supported from below (in the present embodiment, the position supported by the seedling mat support 35s corresponds to this) and the approach position of the planting claw 22 Of the seedling S to be scraped off from the seedling mat M by a shearing force, and the stress can be sufficiently concentrated to be cut cleanly. In particular, even when the seedling platform 17 and the lower guide rail 28 are displaced upward with respect to the rotation trajectory of the planting claw 22 so as to shorten the scraping length of the seedling in the longitudinal direction, the above-mentioned As described above, since the lower end portion of the seedling mat M is supported from below by the seedling mat support portion 35s, stable scraping of the seedling can be realized.

  In the rice transplanter 1 of the present embodiment, the seedling outlet forming member 35 is removed from the lower guide rail 28 to form another seedling outlet in which the seedling outlet is formed larger than the seedling outlet forming member 35. It is configured to be exchangeable with a member (not shown). Alternatively, it is also possible to remove the seedling outlet formation member 35 and use the seedling passage 28n as a seedling outlet. Thereby, with one rice transplanter 1, good scraping can be performed, for example, on both a seedling mat to which seedlings are raised at high density and a seedling mat to which seedlings are raised at a general density. .

  Below, with reference to FIG.10 and FIG.11 etc., the structure of the seedling extraction guide member 50 is demonstrated in detail. FIG. 10 is a perspective view showing the detailed configuration of the seedling removal guide member 50. As shown in FIG. FIG. 11 is a perspective view showing a detailed configuration of the seedling removal guide member 50 when viewed at an angle different from that of FIG.

  The seedling removal guide member 50 shown in FIG. 10 and FIG. 11 is fastened to the fitting portion 28a of the lower guide rail 28 using a bolt 45 as shown in FIG. 4 and FIG. Mounted around the

  As shown in FIGS. 10 and 11, the seedling removal guide member 50 includes a mounting flat portion 50a, a seedling front guide portion 50b, a pair of seedling side guide portions 50cl and 50cr, and the like. In the present embodiment, the mounting flat portion 50a, the seedling front guide portion 50b, and the pair of seedling side guide portions 50cl and 50cr are all formed of resin, and are integrally molded as a whole seedling extraction guide member 50. .

  The mounting flat portion 50a is a substantially rectangular flat portion. A rectangular notch 50n is formed at the left and right center of the mounting flat portion 50a. Mounting holes 50h are respectively formed on the left and right sides of the mounting flat portion 50a across the notch 50n. The seedling removal guide member 50 is inserted into the mounting holes 50h and 50h with the open end of the cutout portion 50n being directed rearward, and is tightened together with the seedling removal opening forming member 35 by inserting the bolt 45 described above. It is attached to the fitting portion 28 a of the lower guide rail 28.

  The seedling front guide portion 50b is disposed to project downward in front of the planting claw passage space X, which is a space through which the tip of the planting claw 22 passes after passing through the seedling passage port 28n (seedling outlet N). Ru. The seedling front guide portion 50 b is formed in a shape along the trajectory of the tip of the planting claw 22.

  More specifically, as shown in FIG. 10 and the like, the seedling front guide portion 50b has a curved plate portion 50d, a projecting portion 50e, and a guide rod 50f. The seedling front guide portion 50 b is a plate-like portion curved along the trajectory of the tip of the planting claw 22. In the present embodiment, the lateral width of the curved plate portion 50d of the seedling front guide portion 50b is larger than the distance between the pair of seedling lateral guide portions 50cl and 50cr over the entire area. The protrusion 50 e is formed to project rearward from the left and right center of the curved plate 50 d. The protrusion 50 e is elongated along the path of the tip of the planting claw 22. The guide rod 50f is a bar-like portion provided with its upper end continuing to the lower end of the protrusion 50e and extending downward. Guide rod 50f is provided along the path of the tip of planting claw 22.

  The pair of seedling side guide parts is constituted by the left seedling side guide part 50cl and the right seedling side guide part 50cr.

  Left seedling side direction guide part 50cl is arranged to project downward on the left side of planting claw passing space X. The left seedling side direction guide part 50cl is connected with the curved plate part 50d of the seedling front guide part 50b in the base end part. In other words, when viewed from the side (when viewed in the direction of the lateral feed movement of the seedling platform 17), the left seedling side direction guide part 50cl is the same as the curved plate part 50d at its base end. There is no gap between them. And when it sees from a side, the space | interval of left seedling side direction guide part 50cl and curved-plate part 50d spreads gradually as it goes below. When the seedling outlet forming member 35 and the seedling takeout guide member 50 are attached to the lower guide rail 28, the left receiving boundary is on the inner surface (the surface exposed to the planting claw passing space X) of the left seedling side direction guide portion 50cl. The outer surface of the guide portion 41 l abuts and is in alignment.

  Right seedling side direction guide part 50cr is arranged so that it may project downward on the right side of planting claw passage space X. The right seedling side direction guide part 50cr is connected with the curved plate part 50d of the seedling front guide part 50b in the base end part. In other words, when viewed from the side, the right seedling side direction guide portion 50cr is in a state in which there is no gap between the right seedling side direction guide portion 50cr and the curved plate portion 50d at the base end thereof. And when it sees from a side, the space | interval of the right seedling side direction guide part 50cr and the curved plate part 50d will spread gradually as it goes below. When the seedling outlet forming member 35 and the seedling takeout guide member 50 are attached to the lower guide rail 28, the right receiving boundary is on the inner surface (the surface exposed to the planting claw passing space X) of the right seedling side direction guide portion 50cr. The outer surface of the guide portion 41r abuts and is in alignment.

  Next, how the seedling S is guided downward by the seedling removal guide member 50 configured as described above will be described with reference to FIG. FIG. 12 is a side view showing how the scraped-off seedlings S are guided by the seedling removal guide member 50. As shown in FIG.

  Seedling S after passing through the seedling passage port 28n (seedling outlet N) is guided by the above-mentioned seedling takeout guide member 50 (see FIG. 12), and is held by the planting claw 22 and guided downward. The seedling S passes between the pair of left and right seedling side guides 50cl and 50cr. For this reason, the disorder of the horizontal direction of the attitude | position of scraped-off seedling S is suppressed. In addition, at that time, the front surface of the seedling S is guided downward along the seedling front guide portion 50b. For this reason, the inclination to the front of the attitude | position of scraped-off seedling S can be suppressed. Furthermore, when viewed from the side, the distance between the pair of left and right seedling side guide portions 50cl and 50cr and the seedling front guide portion 50b increases as it goes downward. For this reason, the seedling S which is held by the planting claw 22 and guided downward is blocked by the left and right pair of seedling side guide portions 50cl and 50cr at the base end of the seedling removal guide member 50 It hardens to some extent, but can not harden excessively. Also, the resistance generated between the seedling S and the pair of left and right seedling side guide portions 50cl and 50cr can prevent the seedling S from being in an extremely forward inclined position, and in turn can be planted on the ground in an appropriate position. Can. Further, when viewed from the side, since the gap between the seedling front guide portion 50b and the pair of left and right seedling side guide portions 50cl and 50cr extends downward, the seedling extraction guide member 50 It becomes difficult to deposit soil inside. Therefore, it is possible to prevent the situation where the deposited soil adheres to the seedling S and causes a planting failure.

  As explained above, the seedling taking-out and guiding member 50 of the present embodiment is a member attached to the rice transplanter 1 including the seedling platform 17, the lower guide rail 28, and the planting claw 22. The seedling mat M is placed on the seedling platform 17. The lower guide rail 28 supports the lower end of the seedling mat M. The planting claw 22 enters the lower end portion of the seedling mat M, scrapes the seedling S to be scraped off, passes the seedling passage port 28n formed in the lower guide rail 28, and moves the seedling S downward. Guide and plant on the ground. The seedling removal guide member 50 includes a seedling front guide portion 50b and a pair of left and right seedling side guide portions 50cl and 50cr. The seedling front guide portion 50b is disposed so as to project downward in front of the planting claw passage space X, which is a space through which the planting claw 22 passes after the tip of the planting claw 22n passes through. It is formed along the trajectory of the tip. The pair of left and right seedling side guide parts 50cl and 50cr are arranged to project downward at the side of the planting claw passage space X, and are connected to the seedling front guide part 50b at the base end thereof. When viewed from the side, the gap with the seedling front guide portion 50b is formed so as to gradually increase toward the lower end.

  Thereby, the seedling S held by the planting claw 22 and guided downward travels between the pair of left and right seedling side guides 50cl and 50cr. For this reason, the disorder of the horizontal direction of the attitude | position of scraped-off seedling S can be suppressed. In addition, at that time, the front surface of the seedling S is guided downward along the seedling front guide portion 50b. For this reason, the inclination to the front of the attitude | position of scraped-off seedling S can be suppressed. Furthermore, when viewed from the side, the distance between the pair of left and right seedling side guide portions 50cl and 50cr and the seedling forward guide portion 50b increases as it goes downward. For this reason, the seedling S held by the planting claws 22 and guided downward is a soil portion (block portion) at the base end portion of the seedling removal guide member 50 to the pair of left and right seedling lateral guide portions 50cl It is hardened to some extent in contact. Thereafter, as the seedling S is guided downward, the portion where the left and right pair of seedling side guides 50cl and 50cr contact the seedling S gradually shifts toward the tip of the leaf, and the left and right pair of seedling sides The resistance generated between the guide portions 50cl and 50cr and the seedling S can prevent the holding angle of the seedling S with respect to the planting claw 22 from becoming extremely large due to the centrifugal force. Therefore, the seedling S can be held in a stable posture by the planting claw 22 and guided downward, and thus can be implanted on the ground in an appropriate posture. Further, due to the frictional force generated between the pair of left and right seedling side guide portions 50cl and 50cr and the seedling S, it is possible to suppress that the seedling S falls off from the planting claw 22. Further, when viewed from the side, since the gap between the seedling front guide portion 50b and the pair of left and right seedling side guide portions 50cl and 50cr extends downward, the seedling extraction guide member 50 The soil tends to be discharged downward in the inside of the seedling removal guide member 50, and the soil does not easily accumulate on the inside (inner side) of the seedling removal guide member 50. Therefore, since adhesion of the soil to the seedlings can be prevented, the seedlings can be planted well.

  Further, in the seedling removal guide member 50 of the present embodiment, the seedling front guide portion 50b and the pair of left and right seedling side direction guides 50cl and 50cr are integrally formed.

  This brings about the following effects. That is, conventionally, a member for guiding the front surface of the seedling when it is held by the planting claw and transported to the ground, a member for guiding the left side surface of the seedling, and a member for guiding the right side surface of the seedling Since it was provided separately, the individual members had to be positioned, and assembly to the guide rail was complicated. In this respect, in this configuration, a member (seedling front guide portion 50b) for guiding the front surface of the seedling S held by the planting claw 22 and transported to the ground and a member (one pair of right and left for guiding the side surface of the seedling S) Since the seedling side guides 50cl and 50cr) are integrally formed, the assembly becomes easy. In particular, the member for guiding the seedlings S contacts the seedlings S and wears the surface, so it needs to be replaced at the time of wear, but in the present configuration the attaching and detaching work of the seedling removal guide member 50 becomes easy. Improve.

  Moreover, in the seedling removal guide member 50 of this embodiment, the seedling front guide part 50b has the plate-shaped curved plate part 50d curved along the locus | trajectory of the front-end | tip of the planting claw 22. As shown in FIG. The lateral width of at least a part of the curved plate portion 50d is larger than the distance between the pair of left and right seedling side guide portions 50cl and 50cr.

  Thereby, it can be suppressed that the soil which has collapsed from the block portion of the seedling S scraped off by the planting claw 22 is spattered forward of the seedling removal guide member 50. For this reason, it can suppress that soil accumulates on the member and apparatus (for example, float) arrange | positioned under the seedling extraction guide member 50 in front of and below.

  Moreover, in the seedling removal guide member 50 of this embodiment, the protrusion part 50e which protrudes toward back is formed in the left-right center part of the curved plate part 50d. The protrusion 50 e is elongated along the path of the tip of the planting claw 22.

  As a result, the planting claw 22 can be moved downward along the protrusion, and the seedling S scraped off by the planting claw 22 is transported to the vicinity of the ground while suppressing falling from the planting claw 22 be able to.

  In the seedling takeout guide member 50 of the present embodiment, a bar-like guide rod 50f is formed in the seedling front guide portion 50b so as to extend downward along the trajectory of the tip of the planting claw 22 from the lower end of the curved plate portion 50d. ing. The protrusion 50e is formed in a shape continuous with the guide rod 50f.

  As a result, the seedlings S scraped off by the planting claws 22 can be transported to the vicinity of the ground along the guide rods 50 f while suppressing the seedlings S from falling from the planting claws 22. Further, since the seedling S is guided by the rod-like guide rod 50f having a small contact area with the seedling S, adhesion and deposition of soil on the mat portion of the seedling can be suppressed. Furthermore, since the shape is continuous by the protrusion 50e and the guide rod 50f, the guide of the seedling S by the protrusion 50e can be smoothly transferred to the guide of the seedling S by the guide rod 50f.

  In the seedling removal guide member 50 of the present embodiment, both the seedling front guide portion 50b and the pair of left and right seedling side guide portions 50cl and 50cr are formed of resin.

  Thus, by forming the seedling removal guide member 50 of a material having a large damping of vibration different from the conventional metal material, it is possible to prevent the situation where the seedling removal guide member 50 is broken due to the resonance phenomenon.

  The rice transplanter 1 of this embodiment is provided with the said seedling extraction guidance member 50. As shown in FIG.

  As a result, the seedlings S can be held in a stable posture by the planting claws 22 and guided downward, and thus can be implanted on the ground in an appropriate posture. Moreover, since it becomes difficult for soil to accumulate on the inside (inner side) of the seedling taking-out guide member 50, adhesion of the soil to the seedling can be prevented, and planting can be performed favorably.

  The preferred embodiment of the present invention has been described above, but the above-described configuration can be modified, for example, as follows.

  The shapes of the seedling front guide portion 50b and the seedling side guide portions 50cl and 50cr can be changed as appropriate. For example, the curved plate portion 50d can be changed to a shape in which the lateral width thereof gradually decreases as it approaches the lower end. The height of the lower end of the curved plate portion 50d can also be changed to be higher or lower than the above configuration.

  The height of the upper end of the protrusion 50e is the height in the vicinity of the portion where the seedling side guide parts 50cl and 50cr and the seedling front guide part 50b are connected, but may be higher or lower. Furthermore, although the shape of the guide rod 50f is a flat rod elongated in the front-rear direction, it may be changed to, for example, a round rod.

  The seedling front guide portion 50b and the pair of left and right seedling side guide portions 50cl and 50cr may be configured by different members.

  In the above embodiment, the seedling loading stand 17 is disposed to be inclined so that the front is high and the rear is low. However, the present invention is not necessarily limited thereto, and the present invention can also be applied to a seedling transplanting machine in which the seedling platform is inclined so that the front part is low and the rear part is high.

  In the above embodiment, the lower portion of the seedling mat M placed on the seedling loading stand 17 (seedling bottom receiving part 28b and seedling top receiving part 28d) and the seedling loading stand 17 on the lower rail frame 31 Although the part (fitting part 28a) which makes it slidable shall be provided integrally, it does not restrict to this, and these parts may be constituted as an individual member.

  In the above-described embodiment, the seedling transplanting machine according to the present invention is a riding rice transplanter that carries out a seedling transplanting operation by the operator. However, the present invention is not necessarily limited thereto, and it is also possible to apply the present invention to a seedling transplanting machine in which the operator performs a seedling transplanting operation while pushing by hand.

  In the above embodiment, the seedling transplanting machine according to the present invention is a rice transplanter, but the present invention is not limited to this. For example, the present invention may be applied to a seedling transplanting machine used for planting herbaceous etc. it can. Moreover, also when applying this invention to a rice transplanter, it can be applied not only to the six row planted rice transplanter like this embodiment but to, for example, an eight row planted rice transplanter.

1 Rice transplanter (seedling transplanter)
17 seedling platform 22 planting claw 28 lower guide rail (guide rail)
28n Seedling passage port 50 Seedling take-out guide member 50b Seedling front guide portion 50cl, 50cr Left and right pair of seedling side guide portions M Seedling mat S (for scraping) seedling

Claims (7)

A seedling platform on which a seedling mat is placed,
A guide rail supporting the lower end of the seedling mat;
Planting claws which enter the lower end portion of the seedling mat, scrape off the seedling to be scraped, pass the seedling passage formed in the guide rail, guide the seedling downward and plant it on the ground;
A seedling removal guide member attached to a seedling transplanting machine comprising
The tip of the planting claw passes through the seedling passage port and is disposed so as to project downward in front of the planting claw passing space which is a space through which the planting claw passes, and is formed along the locus of the tip of the planting claw Seedling forward guide section, and
The planting claw is disposed so as to project downward at the side of the passage space, and is connected to the seedling front guide at its proximal end, and when viewed from the side, the seedling forward as it goes toward the lower end. A pair of left and right seedling side guides formed so that the distance between the guide and the guide gradually increases,
A seedling extraction guide member comprising: The seedling removal guide member according to claim 1, wherein
A seedling removal guide member characterized in that the seedling front guide portion and the pair of left and right seedling side direction guides are integrally formed. It is a seedling extraction guidance member according to claim 1 or 2,
The seedling front guide portion has a plate-like curved plate portion curved along a locus of the tip of the planting claw,
A seedling removal and guide member characterized in that the lateral width of at least a part of the curved plate portion is larger than the distance between the pair of left and right seedling side guides. The seedling removal guide member according to claim 3, wherein
The left and right center portions of the curved plate portion are formed with a protruding portion that protrudes rearward,
The said protrusion part is formed elongate along the locus | trajectory of the front-end | tip of the said planting claw, The seedling extraction guidance member characterized by the above-mentioned. The seedling removal guide member according to claim 4, wherein
From the lower end of the curved plate portion, a rod-like guide rod is formed in the seedling front guide portion so as to extend downward along the path of the tip of the planting claw,
The seedling removal guide member characterized in that the protrusion is formed in a shape continuous with the guide rod. The seedling removal guide member according to any one of claims 1 to 5, wherein
A seedling removal and guide member characterized in that each of the seedling front guide portion and the pair of left and right seedling side direction guide portions is made of resin.   A seedling transplanting machine comprising the seedling removal guide member according to any one of claims 1 to 6.

Images