JP4988296B2 - Sweet potato seedling machine - Google Patents

Description

  The present invention relates to a sweet potato cutting seedling machine for transplanting sweet potato seedlings.

  In the sweet potato seedling planting machine for planting sweet potato seedlings in the field, the sweet potato seedlings are transported to the vicinity of the transplanting mechanism by the seedling supply mechanism, the stem ends are gripped by the planting claws, and the planting claws are swung vertically. In some cases, the planting operation is performed by causing the tip of the planting claw to enter the field. Various models have been developed for this form of sweet potato seedling machine, and technical improvements have been made to improve the efficiency of planting work. For example, as disclosed in Japanese Patent Application Laid-Open No. 2000-333515, there is one in which work efficiency is improved by smoothly supplying seedlings.

  In addition, in the mechanism of transplanting sweet potato seedlings, a method of grasping sweet potato seedlings with openable left and right claws and projecting a rod from both claws and fixing the sweet potato seedlings on a rotating drum, A method of sticking out a rod is used.

  Further, in a farm field covered with a multi-film, the multi-cutter mechanism is configured separately from the implantation mechanism, and the multi-film is cut and then implanted.

In addition, it is desirable that the sweet potato seedlings have a planting posture in which the end of the stem is on the bottom and the main stalk is slanted and laid down to make the sweet potato grow healthy.
JP 2000-333515 A

  However, in the conventional technique, while aiming to improve the working efficiency, it did not take into account the mistake in seeding with the planting claws and the planting posture. For this reason, although speeding-up of seedling supply etc. was aimed at, there existed inconveniences, such as a lack of a stock due to a mistake in seedling collection and a poor growth of sweet potato due to an inappropriate planting posture.

  In addition, in the method of implanting the sweet potato seedlings, in the method of projecting the rods, the sweet potato seedlings are damaged, resulting in poor growth of the sweet potato seeds.

  In order to solve the above problems, the present invention proposes a configuration of an implantation mechanism that realizes prevention of seedling mistakes, proper implantation posture of sweet potato seedlings, and implantation without damaging sweet potato seedlings. It is.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
As described in claim 1, the sweet potato seedling (50) is conveyed to the vicinity of the implantation mechanism (7) by the seedling supply mechanism (8), and a pair of left and right implantation nails (7) constituting the implantation mechanism (7) 12a) (12b), the stem end of the sweet potato seedling (50) is grasped and seedlings are taken, and the implanted nails (12a) (12b) are swung up and down, and the implanted nails (12a) By implanting (12b) into the field, in the field covered with the multi-film (55), the multi-film (55) is cut by the implantation nails (12a) and (12b), and then implantation is performed. It is a sweet potato cutting seedling machine, and the pair of left and right implanted nails (12a) (12b) is configured to open and close in the direction of travel by the nail opening and closing mechanism (20), and the implanted nails (12a) (12b) ) Of the seedling supply mechanism (8) at the time of seedling collection is the sweet potato seedling (5 ) And the planted claw (12a) (12b) enters the field, tears the multi-film (55) by a distance (S1) in the front and back, and reaches the lowest point. The movement trajectory at the time of planting is inclined to a low height before and after, and the main stem (50b) of the sweet potato seedling (50) is moved below the multi-film (55) by the planted claws (12a) (12b). Implanted in a slanted state tilted at a low angle before and after the front height, and after the planting operation, the planting claws (12a) and (12b) rise from the lowest point, and the movement trajectory in the range pulled out from the field is also A low inclination is formed, and the movement trajectory during implantation of the implantation claw (12a) (12b) and the movement trajectory during extraction are intersected at the upper part of the multi-film (55), and the implantation claw (12a ) (12b) is a distance (S From), configured to be pulled out obliquely forward, it is to shorten the distance (S1) is in the range dissecting the multi-film (55).

Since it comprised as described in Claim 1, the planting attitude | position in the state which inclined the main stem 50b diagonally and was laid is implement | achieved, and a sweet potato can be grown healthy.
In addition, after planting the sweet potato seedlings 50 (positions P17 to P22), the planting claws 12a are quickly extracted from the field, so that the distance at which the planting claws 12a tear the multi-film 55 in the front-rear direction is minimized. It can be kept small, and problems such as the growth of weeds that can be caused by forming holes in the multi-film 55 can be prevented.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 is a side view showing a sweet potato cutting seedling machine to which the present invention is applied, FIG. 2 is a side sectional view showing a configuration of an implantation mechanism, FIG. 3 is a perspective view showing a configuration of a claw opening / closing mechanism, and FIG. FIG. 5 is a side view showing the static locus of the implanted nail, FIG. 6 is a side view showing the moving locus, and FIG. 7 is a side view of the implanted nail when receiving the sweet potato seedling. 8 is a side view of the implantation nail when the sweet potato seedling is implanted, FIG. 9 is a side view showing the static locus of the implantation nail in the second embodiment, and FIG. 10 is a side view showing the movement locus.

  As shown in FIG. 1, the sweet potato seedling machine 1 is configured to support the machine body 4 by providing front and left guide wheels 2 and rear and left and right drive wheels 3. A hydraulic package 41, a fuel tank 42, and an irrigation tank 43 are disposed in front of the machine body 4. An engine 5 and a transmission 6 connected to the engine 5 are arranged at substantially the center of the body 4.

  Behind the airframe 4, an implantation mechanism 7 and a seedling supply mechanism 8 that supplies seedlings to the implantation mechanism 7 are disposed symmetrically. The sweet potato seedling machine 1 travels by transmitting the output of the engine 5 to the transmission 6, transmitting power from the transmission 6 to the drive wheel sprocket 3 a through the transmission chain, and causing the vehicle body 4 to travel by the drive wheel 3. The implantation mechanism 7 includes an implantation mission 9, a drive link 14, and a seedling ridge 13. Drive is transmitted from the transmission 6 to the implantation mission 9 via the transmission chain and the implantation sprocket 9a, and the drive link 14 is rotated.

  In addition, a seedling supply mechanism (right seedling supply mechanism 8) that forms a “V” shape with a pair of left and right endless rubber belts 18 in the rear view of the body is disposed in front of the planting mechanism 7. The left and right rubber belts 18 are driven to be fed back and forth from each other. By alternately feeding the sweet potato seedlings to the bottom of the “V” shape, the sweet potato seedlings are fed one by one to the cutting seedling ridge 13. It is possible to be delivered. 1 shows the right seedling supply mechanism 8, in which a seedling partition plate 19, 19... Is projected from a rubber belt 18 and is partitioned into a space partitioned by the seedling partition plate 19, 19. By placing the sweet potato seedlings, the sweet potato seedlings are transported at predetermined intervals.

  Next, the implantation mechanism 7 will be described. The implantation mechanism 7 shown in FIG. 2 includes a driven arm 11 that is configured to be swingable on the pivot 9b of the implantation mission 9, a drive link 14 that rotates by driving within the implantation mission 9, and a claw opening and closing at the tip. It is comprised from the insertion seedling ridge 13 provided with the planting nail | claw 12a * 12b which has the mechanism 20 (FIG. 3), the rear end of the insertion seedling ridge 13 is pivoted to the front-end | tip of the said follower arm 11, and the middle part of the insertion seedling ridge 13 is carried out By pivoting to the tip of the drive link 14, the rotation of the drive link 14 causes the insertion seedling ridge 13 to swing the planting claws 12a and 12b vertically in a side view.

  As shown in FIGS. 2 to 4, the claw opening / closing mechanism 20 is configured inside the case 13a of the insertion wrinkle 13, and opens and closes the pair of left and right implantation claws 12a and 12b provided at the tip of the case 13a. As a result, the sweet potato seedlings are opened / opened when the sweet potato seedlings are taken / planted, and the sweet potato seedlings are held in the closed state between the seedling collection time and the planting completion period. Is what you want to do. Thus, since it is not the structure which protrudes and implants a rod, a sweet potato seedling is not damaged and the growth failure of a sweet potato does not come.

  As shown in FIG. 3, the pawl opening / closing mechanism 20 has a disc-shaped shaft 21 fitted with a cam 22 and a swing arm 24 that swings the tip up and down around a rotation shaft 23 (FIG. 2). An interlocking arm 26 having one end fixed to the left claw shaft 15 a and the other end positioned above the tip of the swing arm 24, and a spring acting on the upper surface of the anti-left claw shaft 15 a of the interlocking arm 26. 29, an action plate body 27a provided at the end of the anti-interlocking arm of the left claw shaft 15a, an interlocking column 28 projecting forward from the action plate body 27a, engaging with the interlocking column 28, and rearward to the right The claw shaft 15b includes a driven plate body 27b, and the right claw shaft 15b and the left claw shaft 15a are disposed in a symmetrical relationship, and are connected to the action plate body 27a and the driven plate body 27b. Are fixedly provided with upper portions of the implantation claws 12a and 12b.

  The shaft 21 is fixed to the tip of the drive link 14 that moves in a circular motion, and the cam 22 is configured so that a substantially half-circular side surface is large in the radius of the shaft 21. There is a configuration that acts on the swing arm 24 so that the open state is realized when the seedlings of the planting claws 12a and 12b are taken and when the planting is completed. The spring 29 acts as a push spring on the upper surface of the interlocking arm 26 on the side opposite to the left claw shaft 15a, thereby urging the left claw shaft 15a in a direction to rotate counterclockwise (FIG. 4). Yes.

  With the above configuration, as the drive link 14 rotates, the shaft 21 revolves around the drive link shaft 14a. When the cam 22 acts on the swing arm 24 along with the revolution, the tip of the swing arm 24 is moved to the interlock arm. Acting on the lower surface of the distal end of 26, the distal end of the interlocking arm 26 is pushed upward against the urging force of the spring 29a, and the left claw shaft 15a is rotated clockwise (FIG. 4). By the clockwise rotation of the left pawl shaft 15a, the action plate 27a is also rotated clockwise, and the interlocking column 28 is moved upward. Then, the driven plate body 27b that engages with the interlocking column 28 is rotated counterclockwise about the right claw shaft 15b so as to be pushed up by the interlocking column 28. That is, the action plate 27a and the driven plate 27b operate simultaneously. The implanting claws 12a and 12b are closed by the operation of the action plate 27a and the driven plate 27b described above. (Fig. 4)

  On the other hand, in the rotation range in which the cam 22 does not act on the swing arm 24 in the rotation of the drive link 14, the upper surface of the interlock arm 26 on the side opposite to the left claw shaft 15a is pushed down by the biasing force of the spring 29 that is a push spring. Thus, the left claw shaft 15a rotates counterclockwise (FIG. 4). By the counterclockwise rotation of the left claw shaft 15a, the action plate body 27a similarly rotates counterclockwise, and the interlocking column 28 moves downward. Then, the driven plate body 27b engaged with the interlocking column 28 is rotated clockwise about the right claw shaft 15b so as to be pushed down by the interlocking column 28. That is, the action plate 27a and the driven plate 27b operate simultaneously. The implanting claws 12a and 12b are opened by the operation of the action plate body 27a and the driven plate body 27b. The open state is such that when the stalk end 50a (FIG. 7) of the sweet potato seedling 50 is grasped, the stalk end 50a is wide enough to bend, and when the stalk end 50a is bent or raised. Also, it can be securely held.

  Next, the structure and shape of the implantation claws 12a and 12b will be described in detail. As shown in FIG. 4, the planting claws 12 a and 12 b are configured as a pair of left and right, and as described above, close each other's inner surfaces close to each other, and sandwich the end of the sweet potato seedling stalk between them. It is. Further, as shown in FIG. 2, the implanting claws 12 a and 12 b have a lower part (front end side) than the intermediate part 33 as a “gripping part 35”, and the front and rear surfaces of the grasping part 35 are respectively referred to as “front lower end face”. 31 ”and“ rear lower end surface 32 ”, both of which are substantially parallel in a side view, and the front lower end surface has a front height and a low level when implanted. Further, the grasping portion 35 is provided with the driven arm 11 and the drive link 14 so as to be substantially orthogonal to the stem end portion 50a (right angle R shown in FIG. 7) in a side view at the time of seedling collection.

  Furthermore, the upper part of the midway part 33 is referred to as a “nail base part 46”, and the front surface and the rear surface of the grip part 35 are referred to as “front upper end face 36” and “rear upper end face 37”, respectively. Further, the nail base 46 is bent rearward at the midway portion 33, so that the implanted claws 12a and 12b have a substantially "<" shape in the left side view.

  Then, starting from the tips 39 (FIG. 2) of the implanting claws 12a and 12b, the sides from the rear lower end surface 32, the midway portion 33, and the rear upper end surface 37 to the middle portion 33 side end have an acute cross-sectional shape. As a multi-cutter blade 45 having a knife-like shape, the multi-film 55 can be cut at the same time when transplanting (transplanting) a farm scene covered with the multi-film 55 without providing a multi-film cutter mechanism having another configuration. I am doing so.

  In addition, the implanting claws 12a and 12b are formed in a substantially “<” shape in the front view shown in FIG. 4 and are attached symmetrically so that the lower part is in close contact with the middle part 33 when closed, and the left and right parts are The triangular space 34 is formed with a wide interval. As shown in FIG. 4, when the left and right implanting claws 12a and 12b are in the closed state, the substantially "<" shape is formed so that the gripping portions 35 and 35 are vertical surfaces in the vertical direction. The upper nail bases 46 and 46 have a shape in which the upper part is spread outward to form a space 34 between the left and right nail bases 46 and 46. That is, a vertical gripping portion 35 is formed on the front lower end surface 31 shown in FIG. 2, and a substantially “V” -shaped space when the left and right implantation claws 12a and 12b are brought together by the front upper end surface 36. 34 is formed.

  Next, the features of the locus formed by the implantation claws 12a and 12b in the implantation mechanism 7 having the above configuration will be described. FIG. 5 shows a locus formed by the tip of the implanted nail 12a in a side view, and shows a (static) locus L1 when the movement of the implanted nail 12a due to the advance of the aircraft is not taken into account. is there. FIG. 6 shows the locus formed by the tip of the implantation nail 12a in a side view, but shows the (movement) locus L2 when the movement of the implantation nail 12a due to the advance of the aircraft is taken into account. It is. Moreover, the positions P1 to P24 in the figure indicate the positions of the tips of the implantation claws 12a per unit time.

  In the above trajectory, the movement distance per unit time of the positions P22 to P1, which is the range at the time of seedling collection, is smaller than that in the range of positions P1 to P7 which is the range immediately after entering the farming field. It has become. Further, the movement distance per unit time of the positions P8 to P17 in the ground is smaller than that of the positions P17 to P22, which is a range after being extracted from the ground. That is, the moving speed of the planting claws 12a and 12b is slow when the seedling is taken and in the ground, and is fast after the seedling is taken out and pulled out from the ground. Therefore, at the time of seedling collection, it can move slowly and can securely grasp the sweet potato seedling 50 (stem end portion 50c), and it can move slowly and reliably implant even in the ground. It can be done.

  Further, the locus L1 of the planted claws 12a and 12b when the planted claws 12a and 12b grab and receive the sweet potato seedlings 50, that is, positions P1 to P2 where the operation of gripping the sweet potato seedlings 50 is performed as shown in FIG. The locus L1 in the range is substantially orthogonal to the stem end portion 50a of the sweet potato seedling 50. Further, the conveying direction 54 of the sweet potato seedling 50 by the seedling supply mechanism 8 (rubber belt 18) and the moving direction of the gripping part 35 when the sweet potato seedling 50 is seeded by the planting claws 12a and 12b are made substantially parallel. ing.

  Further, as shown in FIG. 6, the trajectory in the range from position P7 to P13, which is the range from just before entering the field to reaching the lowest point, is low before and after in the side view. That is, the sweet potato seedlings 50 gripped at a substantially right angle with respect to the grip part 35 are plunged into the field.

  Further, as shown in FIG. 6, the trajectory in the range from positions P14 to P19, which is a range when being pulled out from the field from the lowest point, is low before and after in a side view. That is, the implanting claws 12a and 12b are pulled obliquely in the forward direction of the machine body so that the multi-film 55 is not broken.

  Next, the action and effect of the trajectory features formed by the implantation nails 12a and 12b will be described. First, when receiving the sweet potato seedlings 50 (positions P22 to P1), the relative speed between the sweet potato seedlings 50 and the implantation nails 12a and 12b acts so that the implantation nails 12a and 12b However, there is no failure in removing the seedlings of the sweet potato seedlings 50, and there is obtained an effect that a defect such as a stock loss due to failure in removing the seedlings does not occur.

  Second, after the sweet potato seedling 50 is implanted (positions P17 to P22), the implanted nails 12a and 12b act so as to be quickly extracted from the field. Further, the distance S1 for tearing the multi-film 55 in the front-rear direction can be suppressed as small as possible, and an effect of preventing problems such as growth of weeds caused by forming the holes can be obtained.

  Thirdly, at the time of seedling removal, the locus L2 (L1) is substantially orthogonal to the stem end portion 50a of the sweet potato seedling 50, and the grip portion 35 is parallel to the locus L1, so that the implantation nails 12a and 12b Acts so that the time for which the stem end portion 50a exists between the grip portions 35 of both claws becomes longer. And if the implantation nail | claw 12a * 12b will be in a closed state in the meantime, the stem end part 50a can be grasped reliably. In other words, since there is a time allowance for the timing of starting the operation to close the implantation claws 12a and 12b, it is possible to cope with a case where the operation start time is deviated or when the stem end portion 50a is slightly bent. Can prevent seedling mistakes.

  Fourth, at the time of seedling collection, the conveyance direction 54 of the rubber belt 18 and the locus L2 are substantially parallel. Therefore, the conveyance speed of the sweet potato seedling 50 by the rubber belt 18 (seedling supply mechanism 8) and the planting claw 12a. -Since it acts so that a relative speed with 12b becomes small, the mistake of the seedling removal by the difference in both moving speeds can be prevented.

  Fifthly, since the locus to the lowest point after entering the field is designed to form a front and rear slope, the planting claws 12a and 12b have sweet candy as shown in FIG. It acts so that the main stem 50b of the seedling 50 is planted so as to be low before and after. In this way, a planting posture in which the main stem 50b is inclined and laid down is realized, and sweet potatoes can be grown healthy.

  Sixth, since the locus of the range drawn from the field from the lowest point forms a low slope before and after, the implantation claws 12a and 12b are obliquely forward as shown in FIG. Pulled out. In this way, the distance S1, which is a range in which the multi-film 55 is torn, can be shortened as much as possible.

  Next, the special action and effect by making the implantation nail | claw 12a * 12b into the shape mentioned above is demonstrated. First, as shown in FIG. 7, the gripping portions 35 of the planting claws 12 a and 12 b have a shape orthogonal to the stem end portion 50 a in a side view at the time of seedling collection. 50a and the grip part 35 can be crossed at a substantially right angle R, and the timing of setting the implantation claws 12a and 12b to the closed state within a wide range M1 in the longitudinal direction in a side view of the grip part 35 can be met. Since it is good, generation | occurrence | production of the seedling removal mistake which may arise by the shift | offset | difference of the timing which the planting nail | claw 12a * 12b closes can be prevented. In other words, since there is a time allowance for the timing of starting the operation to close the implantation claws 12a and 12b, it is possible to cope with a case where the operation start time is deviated or when the stem end portion 50a is slightly bent. Can prevent seedling mistakes.

  Second, as shown in FIG. 8, the front lower end surface 31 (FIG. 2) is formed by forming the front lower end surface 31 to be inclined at the front high and low when the lowest point in the movement locus is implanted. ) Abuts on the main stem 50b, and the main stem 50b can be transplanted in a state where the main stem 50b is laid down at a low height before and after. In this way, an optimal planting posture in the growth of the sweet potato seedling 50 is achieved, and a healthy growth of sweet potato is realized.

  Thirdly, as shown in FIG. 2, in the grip portions 35, 35 below the midway portion 33, the front lower end surface 31 and the rear lower end surface 32 are in a substantially parallel relationship in a side view, When the planting claw 12 is pulled out from the field, the rear lower end surface 32 is pulled out obliquely forward and upward. Thus, the multi-cutter blade 45 formed on the rear lower end surface 32 is prevented from moving upward, and the range in which the multi-film 55 is torn can be minimized.

  Fourthly, by making the implantation claw 12 into a “<” shape when viewed from the front, as shown in FIG. 4, vertical surfaces are formed in the grip portions 35 and 35 below the midway portion 33. Thus, a space 34 is formed between the implantation claws 12a and 12b above the midway portion 33. In this way, as shown in FIG. 8, it becomes possible to allow the stem 50c and the leaf 50d to exist between the spaces 34, so that they do not interfere with the implanted nails 12a and 12b, and the sweet potato seedling 50 is stable. In this state, the sweet potato seedling 50 is not damaged by entering the field and applying an excessive force to the main stem 50b of the sweet potato seedling 50.

  And, fifthly, by making the planting claw 12 into a “<” shape when viewed from the side, as shown in FIG. 7, even when the planting claw 12 is close to the seedling supply mechanism 8, Since the space 44 between the front upper end surface 36 and the seedling supply mechanism 8 is maintained, the implantation claw 12 does not interfere with the rubber belt 18 and the idler 47, and the seedling supply mechanism 8 and the seedling supply mechanism 8 It becomes possible to shorten the distance between the insertion mechanism 7 and the airframe to be compact.

  Next, a second embodiment of the configuration of the implantation mechanism will be described. The structure of the implantation mechanism 70 of the second embodiment shown in FIGS. 9 and 10 includes a guide body 61 provided in the implantation mission 9, a drive link 14 that rotates by driving in the implantation mission 9, and a claw at the tip. The guide body 61 is formed with a guided body 62 composed of an insertion seedling ridge 13 provided with planting claws 12 a and 12 b having an opening / closing mechanism 20 (FIG. 3) and pivotally connected to the rear end of the insertion seedling ridge 13. The inside of the long hole 63 is engaged so as to be slidable, and the middle part of the insertion seedling rod 13 is pivotally connected to the tip of the driving link 14, so that the insertion seedling rod 13 is implanted by the rotation of the driving link 14. The claws 12a and 12b are swung in the vertical direction in a side view. Compared with the configuration shown in FIG. 2 described above, this configuration is configured such that the guide mechanism 61 and the guided body 62 are configured by the driven arm 11 in the implantation mechanism 7.

  Next, the features of the trajectory formed by the implantation claws 12a and 12b and the operation and effect of the implantation mechanism 70 having the above configuration will be described. FIG. 9 shows the trajectory formed by the tip of the implanted nail 12a (the same applies to the implanted nail 12b in the following description), and the locus when the movement of the implanted nail 12a due to the advance of the aircraft is not taken into account. L3 is shown. FIG. 10 shows the locus formed by the tip of the implanted nail 12a, but shows the locus L4 when the movement of the implanted nail 12a due to the advance of the aircraft is taken into account. Moreover, the positions P1 to P24 in the figure indicate the positions of the tips of the implantation claws 12a per unit time.

  In the above trajectory, the movement distance per unit time of the positions P22 to P1, which is the range at the time of seedling collection, is smaller than that in the range of positions P1 to P7 which is the range immediately after entering the farming field. It has become. Further, the movement distance per unit time of the positions P8 to P17 in the ground is smaller than that of the positions P17 to P22, which is a range after being extracted from the ground. That is, the moving speed of the planting claws 12a and 12b is slow when the seedling is taken and in the ground, and is fast after the seedling is taken out and pulled out from the ground. From this, at the time of seedling collection, it can move slowly and can securely grasp the sweet potato seedling 50 (stem end portion 50c), and it can move slowly even in the ground and reliably implant. It can be done.

  Due to the characteristics of the moving speed of the implanted nails 12a, when receiving the sweet potato seedling 50 (positions P22 to P1), the relative speed between the sweet potato seedling 50 and the implanted nails 12a becomes small. 12a does not fail to collect the sweet potato seedlings 50, and there is no problem such as lack of stock due to failure of seedling removal.

  In addition, after planting the sweet potato seedlings 50 (positions P17 to P22), the planting claw 12a is quickly extracted from the field, and therefore the distance S2 at which the planting claw 12a tears the multi-film 55 in the front-rear direction is set. It can be suppressed as small as possible, and problems such as the growth of weeds that can be generated by forming holes in the multi-film 55 can be prevented.

  Here, about the distance which the implantation nail | claw 12a cuts the multi-film 55 in the front-back direction, distance S2 in the implantation mechanism 70 shown in FIG. 10 which is a present Example, and the implantation shown in FIG. 6 in the above-mentioned Example Comparing the distance S1 in the mechanism 7, it can be seen that the distance S2 is shorter than the distance S1. This is based on the fact that the trajectory L4 can be deformed by changing the shape of the guide elongated hole 63 constituting the guide body 61. The shape of the guide elongated hole 63 is reduced so as to make the distance S2 as short as possible. By simulating, it is possible to shorten the distance to cut the multi-film 55. That is, in the structure constituted by the driven arm 11 shown in FIG. 6, the change in the locus L <b> 2 based on the change in the length of the driven arm 11 is different from the guide long hole 63 in the structure of the guide body 61. Since the locus L4 can be changed based on the shape change, the degree of freedom to change the shape of the locus is widened and the distance S2 can be shortened.

  In this way, by adjusting the locus L4 drawn by the implantation claw 12a so that the distance S2 for tearing the multi-film 55 in the front-rear direction is as short as possible (by adjusting the shape of the guide body 61 and the guide long hole 63). ), Problems such as growth of weeds that may be caused by forming holes in the multi-film 55 can be prevented.

  As described above, according to the present invention, the sweet potato seedlings are transported to the vicinity of the planting mechanism by the seedling supply mechanism, the stem ends are grasped by a pair of left and right planting nails, and the seedlings are taken, and the planting nails are shaken in the vertical direction. In the sweet potato seedling machine that performs the planting work by moving the planted claw into the field, the pair of left and right planted claws are configured to open and close by a claw opening and closing mechanism, and at the time of planting the planted claw Since the trajectory at is substantially perpendicular to the stem end, there is a time allowance for the operation start timing when the implantation nail is in the closed state, so if the operation start time is shifted or the stem end is slightly bent. It is possible to cope with the situation, and to prevent mistakes in seedling collection.

  In addition, in the planting claw, the locus from just before entering the field until reaching the lowest point, and the locus when pulling out from the field from the lowest point is the front height and low in the side view. Can be planted in a slanted state with its main stem tilted diagonally, allowing sweet potatoes to grow healthy, and shortening the range to cut the multifilm as much as possible to prevent problems such as weed growth be able to.

  Also, in the implanted nail, the upper part from the middle part is a nail base, and when the left and right implanted nails are in a closed state, a space is formed between the left and right nail bases. It is possible to allow stems and leaves to exist between the spaces, and these do not interfere with the implanted nails, and the sweet potato seedlings enter the field in a stable state, making it impossible for the main stems of the sweet potato seedlings. The sweet potato seedlings will not be damaged by applying excessive force. In addition, after the planting claws are opened and the sweet potato seedlings 50 are released, the space is further widened, so that when the planting nails are extracted, the planting claws do not interfere with the stems and leaves. There are no problems such as seedlings or disruption of the planting posture.

It is a side view which shows the sweet potato cutting seedling machine to which this invention is applied. It is side surface partial sectional drawing which shows the structure of the implantation mechanism. It is a perspective view which shows the structure of a nail | claw opening / closing mechanism. It is a front view which shows the operation | movement which opens and closes a implantation nail | claw. It is a side view which shows the static locus | trajectory of an implantation nail | claw. It is a side view which similarly shows a movement locus | trajectory. It is a side view of the implantation nail | claw at the time of receiving a sweet potato seedling. It is a side view of the implantation nail | claw at the time of planting a sweet potato seedling. It is a side view which shows the static locus | trajectory of the implantation nail | claw in a 2nd Example. It is a side view which similarly shows a movement locus | trajectory.

7 Planting Mechanism 8 Seedling Supply Mechanism 12a Planting Claw 12b Planting Claw 50 Sweet Potato Seedling 50a Stem End

Claims (1)

The sweet potato seedling (50) is conveyed to the vicinity of the implantation mechanism (7) by the seedling supply mechanism (8), and the pair of left and right implantation nails (12a) (12b) constituting the implantation mechanism (7) Grabbing the stalk end of the sweet potato seedling (50), taking seedlings, swinging the implanted nails (12a) and (12b) in the vertical direction, and causing the implanted nails (12a) and (12b) to enter the field Thus, in a field covered with a multi-film (55), after cutting the multi-film (55) with the planting claws (12a) (12b), a sweet potato insertion seedling machine for performing a transplanting operation, The pair of left and right planting claws (12a) and (12b) are configured to be opened and closed by the claw opening and closing mechanism (20) to the left and right in the advancing direction, and the seedling supply mechanism (8) for the implanted nails (12a) and (12b). The trajectory at the time of seedling harvesting in this case is made to be substantially orthogonal to the stem end of the sweet potato seedling (50). When the planting claw (12a) (12b) rushes into the field, tears the multi-film (55) by a distance of the front and rear (S1), and reaches the lowest point, Inclined to high, low and low, the main stalk (50b) of the sweet potato seedling (50) is tilted diagonally at the front, high, low and low below the multi-film (55) by the implanted nails (12a) (12b). After the planting operation, the planting claw (12a) (12b) rises from the lowest point, and the moving trajectory in the range pulled out from the field also forms a low slope before and after the planting. The movement trajectory during the implantation work of the claws (12a) and (12b) and the movement trajectory during the extraction work are crossed at the top of the multi-film (55), and the implantation claws (12a) and (12b) are connected to the field. Pull diagonally forward from the distance (S1), which is the range torn when entering. Configured to wither, sweet potato挿苗machine, characterized in that to shorten the distance (S1) is in the range dissecting the multi-film (55).

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