JP2018000043A - Seedling trans-planter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling trans-planter, in which the seedling planted on a ridge surface laid by a mulch film, so that water droplets to be stored on the mulch film may not trouble the planting work.SOLUTION: A trans-planter for planting a seed to be transplanted, by raising and lowering the planting tool 42 on a ridge U surface, on which a multi film is laid, comprises a drainage system 38 for excluding water droplets on the multi film on the front side of the planting tool 42, and is characterized in that the drainage system 38 is constituted to reserve the exhaust gas having the heat of an engine 9 once in a discharge tank 102, and then blows the exhaust gas over the multi film through an exhaust guide cylinder 103.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seedling transplanting machine for transplanting a seedling by a perforated planting tool that repeatedly moves up and down on a ridge surface on which a multifilm is laid.

  The following patent documents 1 and 2 describe a seedling transplanting machine in which a transplanted seedling is planted with a perforated planting tool in a planting hole melted by a heating element in a multi-film laid on the ridge surface.

JP-A-5-146230 JP 2010-110224 A

  However, in the above-mentioned conventional seedling transplanting machine, there are cases where the transplanting operation is carried out with the seedling transplanting machine on the cocoon on which the multifilm was laid the day before, but the surface of the multifilm is wet due to rain or night dew. In some cases, the heating element is cooled by the heat of vaporization of the water, and the planting hole may not be melted. In such a case, the unmelted or drowned portion of the multifilm disturbs the planting posture of the transplanted seedlings and worsens the subsequent growth state.

  An object of the present invention is to prevent water droplets accumulated on a multi-film from obstructing the transplanting operation in seedling transplanting in which a transplanted seedling is planted with a planting tool on the surface of the multi-film.

  The problems of the present invention are solved by the following technical means.

  The invention described in claim 1 excludes water droplets on the multi-film on the front side of the planting tool 42 in the seedling transplanting machine for planting a transplanted seedling by raising and lowering the planting tool 42 on the heel U surface on which the multi-film is laid. A seedling transplanting machine characterized in that a drainage device 38 is provided.

  The invention described in claim 2 is the seedling transplanter according to claim 1, characterized in that the drainage device 38 blows out hot air onto the multi-film.

  The invention described in claim 3 is the seedling transplanter according to claim 2, wherein the drainage device 38 blows exhaust gas from the engine 9 onto the multi-film.

  According to a fourth aspect of the present invention, the exhaust gas from the engine 9 is once accumulated in the exhaust tank 102, and then the exhaust gas is ejected onto the multi-film by the exhaust guide cylinder 103. A transplanter.

  According to a fifth aspect of the present invention, there is provided an exhaust lid 109 that enables exhaust gas to be directly discharged to the outside air at an exhaust gas introduction portion from the engine 9 to the exhaust tank 102. A transplanter.

  According to the sixth aspect of the present invention, the opening / closing of the exhaust cover 109 and the operation of the travel clutch operation tool 204 for engaging / disengaging the clutch of the travel unit 1a are interlocked. The seedling transplanter according to claim 5, wherein the seedling transplanter is switched to the outside air discharge side.

  According to the first aspect of the present invention, by removing the water droplets accumulated on the multi-film by the drainage device 38, the multi-film can be smoothly moved up and down without sticking to the planting tool 42, and the transplanted seedling does not fall down and stands up. It will be planted in the cocoon, and the subsequent growth will be improved.

  According to invention of Claim 2, in addition to the effect of Claim 1, warm air dries on the multi-film and is effective in preventing sticking with the planting tool 42. The attachment operation is even better.

  According to the third aspect of the present invention, in addition to the effect of the second aspect, the configuration is achieved by using the exhaust gas of the engine 9 that is the power source of the airframe without providing a separate device for generating warm air. Simplify.

  According to the fourth aspect of the invention, in addition to the effect of the third aspect, the exhaust gas from the engine 9 is temporarily stored in the exhaust tank 102 so that the high-temperature exhaust gas is not directly blown onto the multi-film. The planting hole is not distorted by melting the multi-film.

  According to the fifth aspect of the invention, in addition to the effect of the fourth aspect, when there is no water droplet on the multi-film and drying is not necessary, the exhaust lid 109 is opened to reduce the exhaust load of the engine 9. Light work can be done.

  According to the sixth aspect of the present invention, in addition to the effect of any one of the first to fifth aspects, the traveling clutch operation tool 204 is used while traveling on the multi-film while drying the exhaust film with exhaust gas. When the travel is stopped with the switch turned off, the exhaust lid 109 is switched to the outside air discharge so that the exhaust gas continues to be blown to one place on the multi-film so as not to melt or partially melt the multi-film.

Whole side view of vegetable transplanter Whole plan view of vegetable transplanter Perspective view of the connecting part of the running part and planting part Perspective view of sensor Side view of unloader Top view of take-out device Top view of the seedling stand Cross section of seedling tray moving device Action side view sectional view of the seedling stand Action plan view of seedling stand Action cross section of seedling stand Action explanation perspective view of regulating means Side sectional view showing the transmission structure of the mechanism for switching the lateral movement Flat cross-sectional developed view showing the transmission structure of the mechanism for switching the lateral movement Plan view of lateral movement switching lever Hydraulic circuit diagram Side view of seedling planting device Top view of seedling planting device Expanded side view of drainage device Enlarged front view of drainage device Whole side view of vegetable transplanter with drainage device Lower side sectional view of the tray feeder Lower enlarged side sectional view of the tray feeder Enlarged plan view of the preliminary stage Side sectional view of another embodiment tray supply device

  Hereinafter, an embodiment of a vegetable transplanter as an example of a seedling transplanter of the present invention will be described with reference to the examples shown in the drawings. In the description of the embodiment, the left and right directions in the forward direction of the aircraft are referred to as left and right, respectively, the forward direction is referred to as forward, and the backward direction is referred to as rear. However, the configuration of the present invention is not limited.

  As an embodiment of the present invention, a vegetable transplanter as an example of a transplanter will be described in detail with reference to the drawings. In addition, although this vegetable transplanter does not form a planting hole with a heating element, the present invention is more effective with such a vegetable transplanter.

  As shown in FIGS. 1 and 2, the vegetable transplanting machine 1 has a feeding device 4, a planting device 5, and the like while the machine body is advanced in a state of straddling U by a traveling unit 1 a having traveling wheels 2 and 3. The planting part 1b consisting of is configured to plant the transplanted strain in the tray on the upper surface of the ridge U. The worker appropriately steers the aircraft with the steering handle 6 provided at the rear of the aircraft while walking between the toes U. Hereinafter, the configuration of each unit will be described.

  In the traveling unit 1 a, the engine 9 is disposed on the driving frame 19 at the front portion of the traveling unit mission case 7. A hydraulic pump 10 that is driven by the power of the engine is provided on the left side surface of the engine 9.

  Further, as shown in FIGS. 19 to 21, an exhaust lid 109 closed and biased by a spring 112 is provided at the discharge port of the tail pipe 100 </ b> T facing the rear of the muffler 100 provided on the left side surface of the engine 9. A drainage device 38 is configured by connecting an exhaust hose 101 to a side surface.

  The exhaust lid 109 is connected to a main clutch lever 204, which is a travel clutch operating tool, by a wire 113, and when the main clutch lever 204 is inserted to start traveling, the wire 113 is loosened and the exhaust lid 109 is pulled by a spring 112 to be exhausted. When the outlet is closed and the exhaust gas is guided to the exhaust hose 101 and the main clutch lever 204 is turned off to stop traveling, the wire 113 is pulled to open the exhaust lid 109 and exhaust the exhaust gas backward from the exhaust port. That is, the exhaust gas is guided to the exhaust hose 101 during the work travel. When the exhaust gas is exhausted in a large amount and strongly, the exhaust lid 109 opens against the pulling force of the spring 112, and the amount of exhaust gas passing through the exhaust hose 101 is limited.

  The exhaust hose 101 is connected to a rectangular exhaust tank 102 mounted on the driving frame 19 and is provided with an exhaust guide cylinder 103 that is wide open laterally from the exhaust tank 102 toward the front and lower side. It is sprayed to blow off water droplets and dry.

  In this way, in this embodiment, the drainage device 38 is dried by passing the exhaust gas of the engine 9 through the exhaust tank 102 to lower the temperature and spraying it on the multi-film, but as another embodiment, the drainage device 38. Alternatively, a structure may be used in which strong wind is blown on the multi-film to blow off moisture.

  Further, a fuel tank 11 and the like are provided on the upper side of the engine 9, and a bonnet 12 covers the upper part thereof.

  A long connecting frame 13 having a rectangular shape in side view is integrally provided on the back surface of the traveling unit mission case 7, and the front end portion of the main frame 14 that connects the traveling unit 1 a and the steering handle 6 to the right rear end of the connecting frame. Are firmly connected. The main frame 14 extends rearward, bends obliquely upward in the middle, and extends as it is to the rear position of the planting portion 1b. And the front-end part of the steering handle 6 is attached to the rear-end part so that rotation adjustment is possible, and the left-right grip 6a of the steering handle 6 can adjust height.

  A left and right traveling transmission case 16 is integrally attached to a left and right pivoting cylinder portion 15 projecting from the left and right side surfaces of the traveling portion transmission case 7, and the left and right rear wheels 2 that are driving traveling wheels are pivotally supported at the distal end portion of the traveling transmission case 16. Has been. In addition, left and right front wheel support rods 18 are attached to the left and right ends of a front wheel support frame 17 provided on the lower side of the engine 9 so as to be swingable around a pivot shaft 17a in the front-rear direction. Left and right front wheels 3, which are driven wheels, are pivotally supported at the lower ends.

  The traveling unit 1a is provided with a machine body control mechanism that controls the machine body position by moving the left and right rear wheels 2 up and down relative to the machine body. In this airframe control mechanism, an elevating cylinder 21 is provided rearward from a hydraulic valve unit 20 disposed on a traveling unit mission case 7, and a balance rod 22 is provided at the tip of a piston rod of the cylinder 21 in a vertical axis. It is attached so that it can rotate freely. The front and rear ends of the piston rod slide along a guide shaft 24 supported by the hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. The left and right end portions of the balance rod 22 are connected to the left and right swing arms 25 fixed to the left and right rotating cylinder portion 15 via left and right connecting rods 26. The left connecting rod 26 has a rolling cylinder 27 incorporated therein, and the length of the connecting rod 26 can be changed by expanding and contracting the cylinder 27.

  The elevating cylinder 21 and the rolling cylinder 27 are operated by controlling the hydraulic oil supplied from the hydraulic pump 10 with a control valve (not shown) in the hydraulic valve unit 20. When the elevating cylinder 21 is expanded and contracted, the left and right rear wheels 2 move up and down by the same amount in the same direction, and the aircraft moves up and down. Further, when the rolling cylinder 27 is expanded and contracted, the left and right rear wheels 2 move up and down by the same amount in the opposite direction, and the body tilts left and right.

  The planting part 1 b is fixed to the upper surface of the connecting frame 13 at the lower part of the planting part transmission case 30 that is transmitted from the traveling part mission case 7, and the first planting transmission case is arranged on the upper part of the planting part mission case 30. The base of 31 is fixed, and the base of the second planting transmission case 32 is fixed to the tip of the first planting transmission case 31. The first planting transmission case 31 and the second planting transmission case 32 are connected to each operation mechanism of the planting device 5 described later. The first planting transmission case 31 and the second planting transmission case 32 are connected to each other. The planting drive transmission system D1 to the planting device 5 is configured. The post planting tool 42 of the planting device 5 is disposed on the rear side of the traveling unit 1a. In addition, a preliminary stage 36 on which a seedling tray is placed is attached to a frame 34 whose base is fixed to the upper part of the planting part mission case 30.

  As shown in FIG. 24, the preliminary mounting table 36 is provided in two upper and lower stages on a mounting stay 37 provided on the left and right sides of the frame 34 so as to be held in a horizontal and upright posture by a mounting shaft 39. An empty tray base 153 for placing T is provided, and a portal arm-shaped empty tray presser 154 is provided on the front side of the frame 34 so as to be pivotable on the same axis as the fixed axis of the mounting stay 37 so as to be pivotable forward and backward. The empty tray T placed on the empty tray table 153 is pressed so as not to fly. Since the left and right arms of the empty tray presser 154 are wider than the width of the tray T, it is possible to place the empty trays T while being rotated backward.

  As shown in FIG. 3, the input shaft 30a of the planting part mission case 30 protrudes forward from the lower end of the case, and by inserting it into the PTO extraction part 7a of the traveling part mission case 7, the PTO It is connected to a shaft on the traveling part side in the take-out part. Further, the planting part mission case 30 is detachably attached to the connecting frame 13 by bolts 35. For this reason, by removing the bolts 35,... And removing the input shaft 31a from the PTO extraction part 7a, the planting part 1b can be removed from the traveling part 1a, and the planting part 1b can be easily maintained.

  In the side view, the planting part mission case 30 is provided rearward and upward from the connection frame 13, and the first planting transmission case 31 is provided rearward and downward from the upper end part of the planting part mission case 30, and the second planting The auxiliary transmission case 32 is provided in the horizontal direction from the lower end of the first planting transmission case 31. With this configuration, a space for moving the balance rod 22 below the second planting transmission case 32 is ensured without making the longitudinal length of the airframe longer than necessary.

  The supply device 4 is arranged on the upper rear side of the main frame 14 and is inclined so that the rear side becomes higher in a tray T containing a plurality of transplanted strains S such as soil block seedlings in the vertical and horizontal directions. The tray supply device 40 that is intermittently moved in the vertical and horizontal directions and is placed on the front side of the tray supply device 40, and the grafts are taken out from the tray T one by one by the extraction claw 41. It is comprised from the taking-out apparatus 43 conveyed to the planting tool 42. FIG.

  The tray T is formed of a thin plastic and has flexibility, and has a large number of pot parts P arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The opening edge portions are connected to each other in a planar shape and molded. And the seedlings S, such as a soil block seedling, are nurtured by sowing and raising seedlings in the floor soil filled in the pot part P.

  Next, the tray supply device will be described. As shown in FIG. 23, a perspective side view of the internal configuration of the tray supply device 40 includes a mounting plate 96 for placing and guiding the tray T integrally formed with a group of aligned pots, and the mounting plate. An outer guide 213 for bending the tray T received from 96 downward and guiding it to the lower side of the mounting plate 96; a tray receiver 214 for accommodating the tray T discharged from the outer guide 213; and an outer guide A feeding tool 215 that feeds and moves the tray T by a predetermined distance from the back surface side along the rear surface 213, and a check roller 216 that can rotate around the feeding tool 215.

  The check roller 216 is configured such that the tray supply device 40 supported by the lateral movement shaft 105 so as to be movable in the left-right direction can act on the feeder 215 at a position where the tray supply device 40 reaches the left-right side end position. In this case, by arranging the lateral movement shaft 105 at a low position in the dead space formed in the inner peripheral portion for the bending feed of the tray T, it is possible to reduce the size without causing interference with the feeding tool 215. A low center of gravity can be achieved.

  As shown in FIG. 23, an enlarged side view of the main part of the feeder 215 includes a feed rod 221 that can be engaged with the groove D between the pots on the back surface side of the tray T, and supports the feed rod 221 so as to be swingable. A feed arm 222 and a relay link 223 connected to the feed rod 221 are provided.

  The feed rod 221 is bent in a U-shape, and has an entry portion 221a extending in a straight line that can enter the groove portion D between the pots on the back surface side of the tray T at the distal end portion. A shaft 221b is provided to pivotally support the distal end portion of the feed arm 222, and a proximal end arm 221c is provided so as to be swingably connected to the relay link 223, whereby an entry portion 221a with respect to the inter-pot groove D of the tray T is provided. Is configured to be able to advance and retreat. The support shaft 221b is provided with a torque spring 224 as an urging tool for entry, and the entry portion 221a is urged in the direction of entering the inter-pot groove D of the tray T without crushing the tray. Further, if necessary, a lever 225 for forcibly retracting the entry portion 221a from the inter-pot groove portion D is provided on the feed rod 221. The entry portion 221a is provided across the left and right width of the tray T.

  The feed arm 222 is provided with a support shaft 222a at the base end portion, and is pivotally supported within the feed operation range of the feed rod 221 at the distal end portion. In addition, the feed arm 221 is a stepping control cam that performs a backward operation from the feed position. 222b is provided. This step control cam 222b is formed so that the feed rod 221 can go backward in the range exceeding the length of the pot portion P of the tray T under the action of the check roller 216. In addition, a spring 226 is provided on the feed arm 222 as a feed urging tool to urge the feed rod 221 in the feed direction, and the feed position of the pot portion P0 immediately above the entry portion 221a is adjusted to the take-out position. A stopper 227 for setting the limit position of the feeding operation is provided.

  The relay link 223 is swingably connected to the proximal end arm 221c of the feed rod 221 by a long hole connecting portion 223a formed at the distal end, and the proximal end is pivotally supported on the support shaft 222a of the feed arm 222. In addition, an engagement control cam 223c that controls the swing of the feed rod 221 to retract the entry portion 221a from the tray T is provided. The engagement control cam 223c is formed such that the entry portion 221a can be retracted from the inter-pot groove portion D according to the action of the check roller 216.

  The reciprocal relationship between the step control cam 222b of the feed arm 222 and the engagement control cam 223b of the relay link 223 is determined by the engagement control cam 223b via the relay link 223 so that the entry portion 221a is straightly removed from the inter-pot groove D. While the retracting portion 221a of the feed rod 221 is retracted from the inter-pot groove portion D, the feed arm 222 is slightly moved backward by the step control cam 222b, and further, the approach portion 221a is moved to the adjacent pot portion P1. Thus, the outer shapes of both cams are configured so that the check roller 216 acts.

  The operation of the tray supply device 40 having the above configuration will be described. The tray supply device 40 is configured such that the check roller 216 acts in common on the step control cam 222b of the feed arm 222 and the engagement control cam 223b of the relay link 223. While the engagement control cam 223b retreats the entry portion 221a of the feed rod 221 via the relay link 223 from the pot-to-pot groove D immediately below the pot portion P0 at the take-out position, the feed control 222 is slightly moved by the step control cam 222b. The entry portion 221a goes straight out from the groove portion D between the pots, and the entry portion 221a moves to the adjacent pot portion P1 by the return operation of the feed arm 222 following this.

  When the check roller 216 further rotates and the engagement control cam 223b and the step control cam 222b are released, the entry portion 221a of the feed rod 221 is adjacent to the pot portion from the back side of the tray T by the biasing force of the torque spring 224. Next, when the feed arm 222 is swung to the restriction position of the stopper 227 by the urging force of the spring 226, the adjacent pot portion P1 is pushed by entering the inter-pot groove portion D immediately below the adjacent pot portion P1. Is positioned at the take-out position, whereby the tray T is fed and moved by a distance corresponding to one pitch.

  When the tray T is fed and moved, the take-out device 43 operates to take out the transplant S. Since this extraction operation avoids the main axis of the transplant S from the surface side of the tray T and the extraction claw 41 acts on the lower half position of the pot portion P, the groove portion D between the pots immediately below the point of action is D Is positioned by the entry portion 221a, so that the operation point of the extraction claw 41 can be aligned with high accuracy. Further, by operating the take-out device 43 with the entry portion 221a engaged with the groove portion D between the pots, the tray T is restrained by the entry portion 221a. Stock S can be taken out.

  With respect to the operation timing of the take-out device 43, the rotational speed of the check roller 216 is set to be 1/2 or less of the operation speed of the take-out device 43, so that the feeding operation time of the tray T is less than 180 degrees and Since it is shorter than the take-out cycle, even if there is an error in the timing at which the check roller 216 acts on the feeder 215 at the left and right end positions where the lateral movement speed by the horizontal movement shaft 105 is reduced, the take-out operation from the tray T is performed. By the time the tray T can be reliably fed, the take-out device 43 transfers the transplant S to the planting device 5 so that the transplant S is planted in the field.

  Thus, the tray supply device 40 includes the feeding tool 215 that engages with the groove portion D between the pots formed on the back side of the tray T and feeds it to a predetermined position. The transplanted strains are sequentially taken out from the device 40 and transferred to the planting device 5 to plant the transplanted strain. At this time, the feeder 215 of the tray supply device 40 is engaged with the groove D between the pots on the back surface of the tray T. Therefore, the feeding accuracy is ensured by tray feeding in a pot unit, and the transplanted strain S can be reliably taken out and delivered to the planting device 5 by the take-out device 43 in a fixed arrangement. .

  FIG. 25 shows another embodiment of the tray supply device 40, in which a tray feed roller 157 is provided below the upper curved portion of the mounting plate 96 on which the tray T is placed, and is rotated by a cam arm 160 instead of the feed arm 222. An auxiliary conveying rod 155 is provided from the feeding arm 222 along the lower surface of the mounting plate 96, and a rack formed at the upper end of the auxiliary conveying rod 155 is meshed with a pinion gear 156 provided coaxially with the tray feeding roller 157. With this rotation, the tray feed roller 157 rotates and feeds the bottom surface of the tray T. A one-way clutch is provided between the tray feed roller 157 and the pinion gear 156 so that the tray feed roller 157 rotates only in the feed direction. Further, the tray feed roller 157 is a rubber roller and is preferably rotated so as to feed longer than the tray feed amount of the feed rod 221. Further, the tray T is guided so as not to float near the tray feed roller 157.

  In addition, if the number of tray feed rollers 157 is two or more or a wide belt is used, the feeding action is further improved. Further, it is also possible to drive a feed roller provided at the upper portion by adding a transport rod that is interlocked with a long hole to the auxiliary transport rod 155.

  In this alternative embodiment, the feed rod 221 feeds the front tray T on the mounting plate 96, and the feed action by the rotation of the tray feed roller 57 acts on the rear tray T following the front tray T. Therefore, the rear tray T is sent without stagnation following the front tray T.

  The extraction device 43 shown in FIGS. 5 and 6 includes the extraction claw 41 and a claw driving mechanism 44 that drives the extraction claw 41. The take-out claw 41 is composed of a bar having a pair of left and right tips, and is provided so as to be closer to each other on the tip side. The claw driving mechanism 44 drives the extraction claw 41 to reciprocate between the tray T and the planting tool 42 while changing the posture of the extraction claw 41. A claw support 45 to which the pair of extraction claw 41 is attached, A claw guide body 46 that guides the advancement and retraction of the take-out claw 41, and a support 47 that supports the claw support body 45 and the claw guide body 46 so as to reciprocate in the longitudinal direction.

  This claw drive mechanism 44 is attached to a transmission case 50 attached to a support body 49 made of a plate material having a lower end welded and fixed to a connecting frame 48 fixed at both ends between the main frame 14 and the planting part mission case 30. Mounting is supported. The transmission case 50 includes an input shaft 51 projecting on both right and left sides and an output shaft 52 projecting on the right side. A passive sprocket 53 provided at the right end of the input shaft 51 and the right side of the planting section mission case 30 are provided. A drive chain 56 is provided between the drive sprocket 55 provided at the tip of the drive shaft 54 protruding in the direction of power, and the power from the engine 9 is transmitted. That is, the passive sprocket 53 provided at the right end of the input shaft 51, the drive sprocket 55 of the drive shaft 54 of the planting part mission case 30, and the drive chain 56 provided between the two sprockets 53 and 55 are connected to the take-out device 43. A transplant takeout drive transmission system D2 is constructed. The output shaft 52 is linked to the input shaft 51 via a gear transmission mechanism, and the tray supply device 40 is driven by the output shaft 52.

  A crank 57 is provided at the tip of the input shaft 51 that protrudes to the left side of the transmission case 50, and a crank pin 58 protrudes laterally from the crank 57, and the input shaft 51 is coaxial with the crank 57. A drive cam 59 is provided. A lower portion of the swing arm 60 is pivotally connected to the lower left portion of the transmission case 50 via a swing shaft 61 so as to be rotatable around the left and right axes. A groove cam 62 extending in the arm longitudinal direction is formed, and a roller 63 externally fitted to the crank pin 58 of the crank 57 is inserted into and engaged with the groove cam 62.

  A support tool 47 is pivotally connected to the upper portion of the swing arm 60 via a pin 64, and this support tool 47 includes a cylindrical portion 47a through which a pipe claw support 45 is inserted and guided so as to be movable in the axial direction. The claw support 45 can be moved toward and away from the tray T. In addition, the pair of extraction claws 41 that are pierced from the oblique direction into the block soil of the transplant S in the pot portion P are attached to the tip of the claw support 45.

  A plate-like support member 65 is attached and fixed to the upper surface of the transmission case 50 by bolts, and a roller 67 is attached to the support 47 through a bracket 66 so as to be freely rotatable. Is engaged with a cam groove 70 formed in a guide plate 69 that is swingably mounted on the pin 68. The guide plate 69 has a rolling roller 71 at the tip of the downward projecting arm, and this rolling roller 71 is in contact with the driving cam 59, and the driving cam 59 rotates counterclockwise in FIG. Thus, the guide plate 69 can be swung around the pin 68. The guide plate 69 is urged in a direction in which the roller 71 is pressed against the drive cam 59 by a spring 72 interposed between the guide plate 69 and the support member 65.

  A coil that urges the nail support 45 in the direction of retreating between the base 73 provided at the base end portion of the nail support 45 and the cylindrical portion 47a of the support 47 that fits and holds the nail support 45. A spring 74 is interposed, and a claw attachment 75 is fitted and fixed to the front end portion of the claw support 45. The bases of the pair of extraction claws 41 are pivotally supported by the claw attachments 75 via shafts 76, respectively, and the pair of extraction claws 41 can swing so that the distal ends thereof move relative to the claw attachments 75. It has become.

  An extrusion link 77 is pivotally connected to a lower end portion of the support tool 47 via a pin 78. A long groove 79 is formed at the tip of the push-out link 77 and is engaged with a pin 80 provided on the protruding arm of the claw attachment 75. The push-out link 77 is provided with a substantially arc-shaped cam plate 81 that can come into contact with the crank pin 58 of the crank 57. The claw guide body 46 is inserted into the claw support body 45, the base body 73, and the claw fixture 75 so as to be slidable in the longitudinal direction. The claw guide body 46 is formed of a round bar or the like and is taken out at the front end thereof. A guide portion 82 having a guide hole for inserting and guiding the claw 41 is provided, an L-shaped operation member 83 is attached to the rear end, and a stopper 84 is fixed to the middle portion. A coil spring 85 is fitted between the coil springs 85 and 73.

  An operating piece 86 is pivotally supported on the support 47 and is urged clockwise in FIG. 5 by a spring. The operating piece 86 has a substantially T-shape having one leg and both arms, A lock portion 86a is formed on one arm, a release portion 86b is formed on the other arm, and a pushing portion 86c is formed on the foot. The actuating member 83 fixed to the claw guide body 46 has a portion parallel to the claw guide body 46, and the parallel portion is guided to slide by a support tool 47 in a non-rotating state, and protrudes from the sliding surface. The movement of the claw guide body 46 in the protruding direction is restricted by engaging with the lock portion 86a of the operating piece 86.

  A lock arm 87 is pivotally supported on the base 73 at the rear end of the claw support 45. The lock arm 87 is urged clockwise by a spring in FIG. A flange 89 that can be engaged with the joint 88 is formed. In the above configuration, when the input shaft 51 rotates counterclockwise from the state shown in FIG. 5, the crank 57 rotates along with the roller 63 fitted to the crank pin 58 to push the cam plate 81 and push the link. 77 is swung to the tray T side, whereby the claw mounting tool 75 and the claw support body 45 are pushed toward the tray T side with respect to the support tool 47 as shown in FIG. , 85 are compressed. Thereby, the extraction nail | claw 41 protrudes and stabs the block soil of the transplant S, and the restoring force for the nail | claw support body 45 to retreat is held.

  When the extraction claw 41 protrudes and pierces the block soil of the transplant S, the extraction claw 41 is regulated by the guide hole of the guide portion 82, and the distance between the tips of the left and right extraction claws 41 is reduced. The take-out pawl 41 is configured to be pierced into the block soil. Further, the claw support 45 is protruded, and the state of the claw support 45 is maintained by engaging the hook portion 89 of the lock arm 87 with the engaging portion 88 of the support 47, and the swing arm 60 and the guide plate 69 swing. do not do.

  From this state, when the input shaft 51 further rotates counterclockwise, the roller 63 slides in the groove cam 62 of the swing arm 60 so that the swing arm 60 moves away from the tray T around the swing shaft 61. By swinging in the direction, the take-out claw 41 moves backward with respect to the tray T together with the claw support 45, the claw guide 46 and the support 47, and the block soil of the transplant S is taken out from the pot portion P.

  Thereafter, when the input shaft 51 further rotates counterclockwise, the take-out claw 41 moves in a direction away from the tray T together with the claw support body 45, the claw guide body 46 and the support tool 47, and the roller 67 moves in the cam groove 70. The front raised portion is slid so that the take-out claw 41 and the like are changed to a substantially downward posture so that the transplant S is in a downward posture and the transplant S is positioned above the front portion of the planting tool 42.

  Then, when the take-out claw 41 has moved to a substantially downward posture, the pushing portion 86c of the operating piece 86 comes into contact with a lock releasing member provided on the support member 65 so that the position thereof can be adjusted. When the operating piece 86 is rotated, the lock on the operating member 83 by the locking portion 86 a of the operating piece 86 is first released, and the claw guide body 46 protrudes by the urging force of the spring 85 and is held by the extraction claw 41. The transplant S is removed from the take-out claw 41 by being pushed out and dropped into the planting tool 42 from above. Thereafter, when the operating piece 86 further rotates, the lock arm 87 is pushed up by the release portion 86b to release the engagement between the flange portion 89 and the engagement portion 88, and the claw guide body 46 is accompanied by the biasing force of the coil spring 74. As a result, the nail support 45 moves backward.

  After that, the input shaft 51 is moved to the state shown in FIG. 5 by the counterclockwise rotation of FIG. 5 and the above operation is repeated.

  As shown in FIG. 2, the tray supply device 40 includes a mounting table 90 on which the tray T is mounted. The mounting table 90 moves in the left-right direction to a pair of upper and lower guide rails 91 a and 91 b arranged in the left-right direction. It is supported freely. The upper guide rail 91a is connected and supported by a horizontal frame 92 fixed to the rear end of the main frame 14 and a left and right upper connection body 93, and the lower guide rail 91b is connected to the second planting transmission case 32 and the support body. 49 and the left and right connecting bodies 94, respectively. The left and right ends of the pair of upper and lower guide rails 91a and 91b are connected by a left and right saddle frame 95, and have a rectangular frame shape with high strength in plan view.

  Further, the mounting table 90 has a mounting plate 96 (FIG. 9) for supporting the bottom of the tray T across the horizontal row of pot portions P (therefore, the upper surface of the mounting plate 96 supports the tray T. The mounting plate 96 is disposed between a pair of side plates 97 opposed to each other in the left-right direction, and the left and right end portions of the mounting plate 96 are opposed surfaces of the left and right side plates 97. It is fixed to (the inner surface in the left-right direction).

  A vertical movement shaft 98 is disposed in the left-right direction at the upper part between the left and right plates 97, and a feed rod described later that engages with a gap between the pot portions P in the vertical direction (vertical direction) of the tray T. A feeder 215 with 221 is attached. Therefore, the tray T is pushed by the feed rod 221 and can be moved vertically. The left and right side plates 97 are connected by other connecting members in addition to the longitudinal movement shaft 99.

  At the upper end portion of the mounting plate 96 of the mounting base 90, an extended mounting portion 300 made of a flat plate formed of a resin material in a slat-like shape is rotatably provided. That is, the base portion of the extended mounting portion 300 is rotatably mounted on the rotation fulcrum shaft 301 provided at the upper end portion of the mounting plate 96, and the mounting surface 96 a on which the tray T of the mounting plate 96 is mounted. The posture can be freely changed between an inclined state Z1 located on the extended line and a forward inclined state Z2 bent forward from the extended line of the mounting surface 96a. Then, an arm 302 provided integrally with the extension mounting portion 300 and a planting lift lever 203 described later (to perform on / off operation of a planting clutch transmitted to the supply device 4 and the planting device 5 and to lift and lower the machine body). Are connected by the operation wire 303, and when the planting clutch is turned off or the machine body is raised by the planting lift lever 203 for turning the machine body, the extended mounting part 300 is placed via the operation wire 303. It is linked so that the posture is changed from the inclined state Z1 positioned on the extended line of the mounting surface 96a of 96 to the forward inclined state Z2 bent forward from the extended line of the mounting surface 96a.

  Reference numerals 304 denote left and right tray holders respectively provided on the left and right sides of the upper end portion of the mounting plate 96 of the mounting table 90, and each of the upper and lower positions of the mounting plate 96 extends upward and bends inward. It is configured to be able to support the upper side surface of the tray T where there are no transplants on the left and right sides of the tray T. That is, when the posture of the extended mounting portion 300 is changed from the inclined state Z1 positioned on the extended line of the mounting surface 96a of the mounting plate 96 to the forward inclined state Z2 bent forward from the extended line of the mounting surface 96a, The receiving tool 304 supports the left and right side portions of the tray T to prevent the transplanted strain from being damaged due to the tray T falling forward or being bent.

  Reference numeral 305 denotes an adjustment bolt that regulates the angle of the forward mounting portion 300 in the forward inclined state, and the extension mounting portion 300 is configured such that the tip of the adjustment bolt 305 contacts an arm 302 provided integrally with the extension mounting portion 300. The angle of the forward inclined state Z2 is regulated. That is, as the adjustment bolt 305 protrudes toward the arm 302 side, the tip of the adjustment bolt 305 comes into contact with the arm 302 more quickly when the posture of the extension platform 300 is changed to the forward inclined state Z2, and the angle of the forward inclined state is increased. Becomes smaller. In the case of the tray T formed of a soft material, if the angle of the forward inclined state of the extension mounting portion 300 is increased, the tray T bends forward and damages the transplant. The angle of the forward inclined state of the part 300 is reduced.

  As described above, when the planting clutch is disengaged or the aircraft is lifted by the planting lift lever 203 during the turning of the machine body, the extended mounting part 300 is attached to the mounting surface 96a of the mounting plate 96 via the operation wire 303. Since the posture is changed from the tilted state Z1 located on the extended line to the forward tilted state Z2 bent forward from the extended line of the mounting surface 96a, the left and right grips 6a of the steering handle 6 are grasped and the rear part of the aircraft is pushed down to turn the aircraft. Since the extended mounting portion 300 extending toward the worker who automatically performs the posture change automatically toward the front, the operator can perform a turning operation with good workability without the extension mounting portion 300 being in the way.

  Here, the lateral movement mechanism of the tray T will be described. The left and right side plates 97 are inserted between the left and right bearing members 104 which are arranged on the left and right sides of the mounting base 90 and are attached to and supported by the left and right saddle frames 95 and at the same pitch. A lateral movement shaft 105 formed with a special screw (Napya screw) that joins the valleys of the cut left and right screws is supported so as to be rotatable about the left and right axis. The lateral movement shaft 105 is associated with the special screw on the axis. A mating slider 106 is externally fitted. The slider 106 is engaged with a pair of left and right engaging pieces 107 provided on the back surface of the mounting plate 96 of the mounting table 90.

  Power is transmitted from the output shaft 52 to the lateral movement shaft 105 via the winding transmission mechanism 108a in the transmission case 108, and the lateral movement shaft 105 is intermittently driven to rotate the lateral movement shaft 105 intermittently. When it is driven to rotate, the slider 106 intermittently moves in the left-right direction and is turned back at the end of the screw formed on the horizontal movement shaft 105, so that the mounting table 90 is reciprocated in the left-right direction. A mounting drive system D3 is configured by the winding transmission mechanism 108a in the transmission case 108.

  The lateral movement shaft 105 is stopped when the transplant S is taken out from the pot part P by the take-out claw 41, and rotates after the transplant S is taken out from the pot part P. The stage 90 is configured to rotate intermittently so as to move the mounting 90 by one pitch in the horizontal arrangement direction (left-right direction). Note that the lateral movement amount can be switched in the transmission case 50 so that the lateral movement amount corresponding to the pitch in the lateral direction of the pot portion P of the two types of trays T that are selectively used can be selected.

  Next, the vertical movement mechanism of the tray T will be described. The left and right arms 111 and 111 are provided on the vertical movement operating shaft 110 that rotates together with the horizontal movement shaft 105, and a pair of left and right is provided at the tip so as to be able to act on a feeder 215 described later. Checking rollers 216 and 216 are provided.

  When the mounting table 90 moves to the left and right ends, the corresponding check rollers 216 and 216 of the longitudinal movement operating shaft 110 act on the feeder 215, so that the tray T is placed in the vertical arrangement direction of the pot portions P. Only one pitch of the pot part P is transferred in the (perpendicular direction orthogonal to the left-right direction).

  As a result, when the removal of the transplant S of the soil block from the horizontal row of pot portions P is completed, the tray T is moved vertically by an amount corresponding to the vertical interval of the pot portions P. The portion of the tray T after the transplant S has been taken out is folded back to the lower surface side of the mounting plate 96, and as shown in FIGS. Guide members 114 that are formed in an arc shape and guide the tray T are fixedly attached to the left and right ends and the center.

  Reference numeral 310 denotes an electric motor that drives and rotates the horizontal movement shaft 105 to move the mounting table 90 left and right. When a supply switch 311 provided on the operation panel 202 is pressed, the horizontal movement shaft 105 is driven and rotated to drive the mounting table 90. Toward the left and right side ends (for example, the steering handle 6 offset from the left and right center of the aircraft and the position opposite to the left and right sides of the aircraft), the platform 90 is moved to the left and right by the platform moving end detection sensor 312 provided on the guide rail 91a. Move until it is detected that it has moved to one end.

  Therefore, when the transfer operation is started by placing the tray T on the mounting table 90 and pressing the supply switch 311, the mounting table 90 moves to the left and right side ends (for example, the steering handle 6 offset from the left and right center of the body and the left and right sides of the body). To the opposite position in the direction) and stop, so that at the beginning of the transplantation work, the extraction device 43 can always take out the transplant from the transplant at the end of the tray T, without wasting the transplant, and Therefore, transplantation can be performed with good workability.

  In addition, when the aircraft is turning (when the planting clutch is disengaged or the aircraft is raised using the planting lift lever 203), the electric motor 310 is operated to control the steering handle 6 and the aircraft that are offset from the left and right center of the aircraft. When it is moved to the opposite end position in the left-right direction and the turning is completed (when the planting clutch is engaged or the aircraft is lowered by the planting lift lever 203), the electric motor 310 is reversely operated. When the platform 90 is returned to the original position, the extension extending toward the operator who performs the turning operation of the aircraft by grasping the left and right grips 6a of the steering handle 6 and pushing down the rear of the aircraft when the aircraft is turning. Since the platform 300 moves to the opposite side of the aircraft in the left-right direction with respect to the steering handle 6, the platform 90 disappears in front of the steering handle 6, and the operator works without the extension platform 300 being in the way. Well turning work can be performed.

  Furthermore, when the structure is such that the electric motor 310 is operated to move the platform 90 to the higher side of the farm scene detected by the pendulum 200 for detecting the horizontal inclination of the aircraft when turning on an inclined ground, the aircraft can turn with a good balance. It can be done and the turning work can be done easily.

  On the left and right guide members 114, holding members 115 that hold down the left and right edge sides of the upper surface of the tray T to prevent the bottom of the pot portion P of the tray T from moving (raising) away from the placement plate 96. Is provided. The holding member 115 is formed by bending an elastically deformable steel bar, the base side 115a is attached and fixed to the guide member 114, and the midway part comes into contact with the upper surface of the tray T and presses it. The tip side is configured to be separated from the tray T.

  A restricting means 116 for restricting movement in the direction away from the placement surface 96a of the tray T is disposed on the rear side of the left and right pressing members 115 in the tray T longitudinal movement direction. The restricting means 116 is formed by bending an elastically deformable steel bar, and a midway portion serves as a pressing portion 116a that contacts the left and right side edges of the upper surface of the tray T, and one end side connects the pressing portion 116a to the tray T side. It is set as the attaching part 116b attached to the side plate 97 so that it may be elastically pressed, and the other end side is made into the knob part 116c formed in the arch shape.

  The attachment portion 116b is rotatably attached to the side plate 97 by a bolt 93, and a restricting posture for restricting the movement of the pressing portion 116a away from the mounting surface 96a of the tray T (see FIGS. 9 to 12). (Indicated by a solid line), the tray T is moved vertically on the mounting plate 96 by gripping the knob portion 116c and pulling up the pressing portion 116a and turning the regulating means 116 outward in the left-right direction around the attachment portion 116b. The restricting means 116 can be freely changed to a retracted posture (indicated by a phantom line in FIG. 12) that can be placed from the position.

  The mounting plate 96 of the above-described table 90 is provided with a detecting means 117 for detecting the passage of the tray T located near the right-side (or left-side) regulating means 116. The detection means 117 includes a contact member 118 that contacts the bottom of the pot portion P on the right end side of the tray T, a biasing member 119 that biases the contact member 118 toward the pot portion P, and a microswitch. It is comprised from contact sensors 120, such as.

  The contact member 118 is supported by a support member 121 whose rear side in the tray vertical movement direction is fixed to the lower surface side of the mounting plate 96 so as to be rotatable around the left and right axes via a support shaft 122. Through the opening 123 formed on the mounting plate 96, the mounting plate 96 can protrude to the mounting surface 96 a side so as to be freely retractable. Further, a stopper 124 is fixed to the contact member 118 so as to contact the lower surface of the mounting plate 96 and restrict the rotation of the contact member 118 in the protruding direction (the direction protruding from the opening 123 toward the tray T). Has been provided.

  The urging member 119 is formed of a spring plate or the like, the rear side in the tray vertical movement direction is fixed to the support member 121, and the front side in the tray vertical movement direction is in contact with the lower surface of the contact member 118, and its elastic force Thus, the contact member 118 is urged in the protruding direction. The contact sensor 120 is fixedly attached to the support member 121, and the contact 120 a is in contact with the middle portion of the biasing member 119.

  Therefore, the contact member 118 is pressed by the pot portion P and retracted to the lower surface side of the mounting plate 96 while the tray T passes over the detection means 117 as indicated by a virtual line in FIG. Then, the contact 120a of the contact sensor 120 is pressed via the biasing member 119, and the presence of the tray T is detected. Then, as shown by the solid line in FIG. 9, when the tray T passes over the detection means 117, the last pot portion P is separated from the contact member 118, and the contact member 118 is placed on the mounting surface by the urging member 119. While projecting to the 96a side, the pressing of the contact 120a of the contact sensor 120 is released, and it is detected that the tray T is separated from the detecting means 117, that is, the passage of the tray T.

  When the detection means 117 detects the passage of the tray T, the detection means is operated to notify the operator that the tray T has to be replenished by operating a notifying means including a buzzer and a lamp. In the example shown in FIG. 9 (FIG. 9), the detection means 117 detects the passage of the tray T when the second pot part P from the rear in the longitudinal arrangement direction of the pot parts P comes to the take-out position by the take-out claw 41. Although the tray T is replenished, the passage of the tray T may be detected on the rear side of the pot portion P in the longitudinal arrangement direction.

  When the operator knows that the tray T has passed the detecting means 117 by the operation of the notifying means 117, the right and left regulating means 116 is changed to the retracted position, and the tray T is placed and replenished on the placing plate 96. Thereafter, the left and right regulating means 116 are returned to the regulating posture. As described above, since the detection unit 117 is provided in the vicinity of the regulation unit 116, malfunction of the detection unit 117 due to the floating of the tray T can be prevented. Therefore, the detection unit 117 may be provided anywhere as long as the lifting of the tray T can be regulated by the regulation unit 116.

  Note that the regulating means 116 may regulate the lifting of the tray T by simply contacting the tray T without pressing the left and right side edges of the upper surface of the tray T. You may make it contact the wall (part which connects the opening edge of the pot part P) lower surface. Further, as the detection means 117, a contact of a contact sensor such as a micro switch or a limit switch may be directly brought into contact with the tray T or the contact member 118.

  Here, a mechanism for switching the lateral movement amount of the power transmission mechanism from the input shaft 51 and the lateral movement mechanism of the tray T will be described. 13 to 15, a spur gear 125 is spline-fitted to the input shaft 51, and is disposed in the transmission case 50 in parallel with the input shaft 51 and the output shaft 52. An intermediate shaft 126 that is rotatably supported is provided. A transmission gear 127 that meshes with the toothless gear 125 is spline-fitted to the intermediate shaft 126, and intermittently connected from the input shaft 51 to the intermediate shaft 126. Power is transmitted to the intermediate shaft 126, and the intermediate shaft 126 rotates intermittently.

  The intermediate shaft 126 is fitted with a first lateral movement drive gear 128 and a second lateral movement drive gear 129 that are spaced apart in the axial direction so as to be relatively rotatable about the central axis of the intermediate shaft. On the other hand, on the output shaft 52, a first lateral movement driven gear 130 meshed with the first lateral movement drive gear 128 and a second lateral movement driven gear 131 meshed with the second lateral movement drive gear 129 are integrally rotatable. Is externally fitted.

  Further, the intermediate shaft 126 is spline-fitted between the first lateral movement drive gear 128 and the second lateral movement drive gear 129 so that it can rotate integrally with the intermediate shaft 126 and can move in the axial direction. A shifter 132 is provided. The shifter 132 is provided with first engagement teeth 134 that mesh with the first meshing teeth 133 formed on the first lateral movement drive gear 128, and the second meshing that is formed on the second lateral movement drive gear 129. Second engagement teeth 136 that mesh with the teeth 135 are provided.

  Accordingly, when the shifter 132 is moved in the axial direction and the first engagement tooth 134 is engaged with the first engagement tooth 133, the first lateral movement drive gear 128, the shifter 132, and the first lateral movement driven gear 130 are used. When power is transmitted and the second engagement teeth 136 are engaged with the second meshing teeth 135, power is transmitted via the second lateral movement drive gear 129, the shifter 132, and the second lateral movement driven gear 131. The output shaft 52 is intermittently rotated, and power is transmitted from the output shaft 52 to the lateral movement shaft 105 as described above, and the lateral movement shaft 105 is intermittently rotated.

  The rotation ratio between the first lateral movement drive gear 128 and the first lateral movement driven gear 130 is larger than the rotation ratio between the second lateral movement drive gear 129 and the second lateral movement driven gear 131, and the pot portion P Corresponding to two types of trays T having different pitches, the lateral movement amount of the tray T can be switched in two stages. A transverse feed switching lever 137 is disposed on the upper surface of the transmission case 50, and the transmission case 50 is inserted through an insertion hole 138 formed in the upper wall of the case 50 so as to be rotatable about a vertical axis. A rotation pin 139 is provided, and a shift pin 140 to be inserted into the circumferential groove 132a of the shifter 132 is fixed to the lower end portion of the rotation shaft 139, and the rotation operation about the axis of the rotation shaft 139 is performed. Thus, the shift pin 140 swings around the axis of the rotation shaft 139 so that the shifter 132 can be moved in the direction of the axis of the intermediate shaft 126.

  The upper part of the rotation shaft 139 protrudes from the insertion hole 138 and is fitted to the lower side of the protruding part so that one end side of the interlocking plate 141 rotates integrally. 142 is fixed. A collar 143 is externally fitted in an intermediate portion of the protruding portion of the rotating shaft 139 so as to be relatively rotatable, and an upper portion of the protruding portion of the rotating shaft 139 is a screw shaft portion 144. 145 and a washer 146 are externally fitted, and a nut 147 is screwed.

  The collar 143 is fitted with the lateral movement switching lever 137 so as to be relatively rotatable. A spring receiving portion 148 is integrally formed with the lateral movement switching lever 137. Further, a torsion coil spring 149 is externally fitted between the lateral movement switching lever 137, the interlocking plate 141 and the contact plate 145 of the collar 143, and these springs 137 and 149 are twisted in opposite directions. In addition, one end of the spring 149 is hooked on the engaging pin 142 and the other end is hooked on the spring receiving portion 148 of the lateral movement switching lever 137.

  Therefore, when the lateral movement switching lever 137 is rotated about the axis of the rotation shaft 139, the interlocking plate 141 is rotated together with the spring 149, the rotation shaft 139 is rotated, and the shifter 132 is moved to the intermediate shaft 126. By moving the lateral movement switching lever 137 from the position indicated by the solid line to the position indicated by the phantom line or from the position indicated by the phantom line to the position indicated by the solid line in FIG. The horizontal movement amount of the tray T is switched.

  When the lateral movement amount of the tray T is switched, if the first engagement teeth 134 do not mesh with the first meshing teeth 133 or the second engagement teeth 136 do not mesh with the second meshing teeth 135, one spring 149 Even if the rotation shaft 139 and the interlocking lever 125 do not rotate, the rotation operation of the lateral movement switching lever 137 is allowed, and in this state, the first or second meshing is performed. When the teeth 133 and 135 are engaged with the first or second engaging teeth 134 and 136, the rotating shaft 139, the interlocking lever 125, and the like are rotated by the biasing force of the twisted spring 149, and the tray Switching of the lateral movement amount of T is completed.

  Therefore, when the lateral movement amount of the tray T is switched, the first or second engagement teeth 134, 136 and the first or second engagement teeth 133, 135 are used to operate the lateral movement switching lever 137. There is no need to synchronize the timing of each part so as to engage with each other. By simply operating the lateral movement switching lever 137, the spring charging function is used to automatically switch at a position where the switching timing is suitable, and the tray T is laterally moved. The amount can be easily switched.

  A screw hole 150 is formed in the upper part of the transmission case 50, and a knob bolt 151 that is screwed into the screw hole 150 is provided. A first engagement tooth 134 is provided on the transverse feed switching lever 137 with a first engagement tooth 134. A pair of insertion holes 152 that match the screw holes 150 are formed to penetrate in a state where the engagement teeth 133 are engaged with each other and a state where the second engagement teeth 136 are engaged with the second engagement teeth 135. By engaging the knob bolt 151 with the screw hole 150 in a state where the first engagement tooth 134 is engaged with the first engagement tooth 133 or the second engagement tooth 136 is engaged with the second engagement tooth 135, The feed switching lever 137 can be fixed.

  The planting device 5 includes a cup-shaped planting tool 42 with a sharp lower end. The planting tool 42 includes a front member 42a and a rear member 42b. The left and right front member mounting arms 162A are rotatably supported by a front member rotating shaft 161A located behind the planting tool 42. The rear member 42a is integrally attached to the left and right rear member attachment arms 162B rotatably supported by the rear member rotation shaft 161B located in front of the planting tool 42. It has been. Therefore, when both members 42a and 42b rotate with the rotation shafts 161A and 161B as fulcrums, the lower portion of the planting tool 42 opens and closes. The front member 42a and the rear member 42b rotate in conjunction with each other by an interlocking pin 163 loosely fitted in a slot formed in the front member mounting arm 162A and the rear member mounting arm 162B. Between the leg 162aA of the front member mounting arm 162A and the leg 162aB of the rear member mounting arm 162B, a spring 164 that urges the front member 42a and the rear member 42b to close is stretched. The planting tool 42 performs a predetermined operation by the following operation mechanism.

  A rear link support arm 167A is rotatably attached to a support portion 33a protruding upward from the second planting transmission case 32, and a base member is pivotally attached to the support arm 167A. The moving shaft 161A is connected. A rear link drive arm 169A provided at the rear end of the second planting transmission case 32 is connected to an intermediate portion of the rear link 168A. Further, a front link support arm 167B is rotatably attached to the planting part mission case 30, and a rear member rotation shaft 161B is connected to the rear end of the front link 168B whose base is pivotally attached to the support arm. Yes. A front link drive arm 169B provided at a rear end portion of the first planting transmission case 31 is connected to an intermediate portion of the front link 168B. When both the drive arms 169A and 169B are driven and rotated, the rear link 168A and the front link 168B swing up and down while changing the position of the base portion back and forth, and the planting tool 42 moves up and down while maintaining a fixed posture.

  An opening / closing arm 171 is rotatably attached to the base portion of the rear link 168A, and the distal end portion of the opening / closing arm 171 and the front side member attachment arm 162A are connected by an opening / closing rod 172. An opening / closing cam 173 that rotates integrally with the rear link drive arm 169A is attached to an intermediate portion of the rear link 168A. A roller 174 as a cam follower of the opening / closing cam is provided on the opening / closing arm 171. The opening / closing cam 173 is engaged with the roller 174 in a stroke in which the planting tool 42 is lifted from a position near the bottom dead center. When the opening / closing cam 173 is engaged with the roller 174, the opening / closing rod 172 is pulled, the front member 42a and the rear member 42b are rotated in conjunction with each other, and the planting tool 42 is opened. When the opening / closing cam 173 does not engage with the roller 174, the planting tool 42 is closed by the tension of the spring 164.

  When the planting tool 42 is at the top dead center, the transplant is dropped by the supply device 4. The supplied transplant is guided into the planting tool through a cylindrical transplant guide 176 attached to the front member rotating shaft 161A and the rear member rotating shaft 161B. The planting tool 42 holding the transplant is lowered, and at the bottom dead center, the lower part of the planting tool 42 pierces the topsoil portion of the cocoon and forms a transplant hole. Almost simultaneously with this, the planting tool 42 is opened, and the held transplant strain is opened into the transplant hole. The planting tool 42 rises as it is, and the planting tool 42 is closed when it rises to near the top dead center.

  In order to maintain the planting performance of the planting tool 42, the outer peripheral surface and inner peripheral surface of the planting tool 42 are made of rubber material or the like in the process in which the planting tool 42 is planted and raised in the field. The structure which makes the scraper which contacts and slides and removes the earth and sand adhering to the planting tool 42 is known. The scraper that is slidably in contact with the inner peripheral surface of the planting tool 42 enters the planting tool 42 when the planting tool 42 is opened and raised. Although it is the structure which drops the earth and sand of a surrounding surface, if the structure which closes the planting tool 42 a little immediately after a scraper enters in the planting tool 42, the resistance which carries out sliding contact with the planting tool 42 inner peripheral surface of a scraper will become large. We can drop earth and sand well.

  Reference numeral 177 denotes a cylindrical fixed guide which is fixed to the front side of the lower guide rail 91b in a posture inclined forward by a fixed arm 178, and the extraction claw 41 is extracted from the tray T and transplants the transplant S It is provided to guide the transplant S to the transplant guide 176 of the planting tool 42 when dropping into the tool 42 from above. The posture inclined before the fixed guide 177 is inclined in the same direction as the direction in which the nail guide body 46 projects and pushes and removes the transplant S from the extraction claw 41, and the planting tool 42 below the extraction claw 41. The transplant can be securely dropped from above, and the posture of the transplant S which has been pushed out from the take-out claw 41 and released is also stabilized by the fixed guide 177 in the previously inclined posture. It is dropped into 42 and the planting posture of the transplant is very good. Further, since the fixed guide 177 is fixed to the lower guide rail 91b that supports the mounting table 90 so as to be movable left and right, the positional relationship between the tray T on the mounting table 90 and the fixed guide 177 is always constant, and the take-out The nail | claw 41 takes out from the tray T, and the transplanted strain S is reliably dropped into the fixed guide 177 and the planting posture of the transplanted strain is stabilized.

  A pair of left and right pressure-reducing wheels 180 are disposed behind the planting position. The left and right pressure-reducing wheels 180 are rotatably mounted in the middle of a swing frame 187 that is swingably supported by a support frame 186 fixed to the front and rear intermediate portion of the main frame 14. A rod 188 extends upward from the center of the left and right of the rear end portion of the swing frame 187, and the upper end portion of the rod 188 has a base portion fixed to the rear end portion of the main frame 14. The support arm 189 is supported through the through hole 189a. The rod 188 is provided with a weight 190 penetrating through the rod 188. By adjusting the number of the weights 190, the pressure reducing load of the left and right pressure reducing wheels 180 can be adjusted. Reference numeral 191 denotes a hairpin that prevents the rod 188 from coming out of the through hole 189a of the support arm 189.

  The left and right pressure wheels 180 are attached obliquely so that the distance between them is narrower toward the lower part, rolls on the heel surface as the aircraft progresses, and removes the soil around the transplant hole after the transplant strain has been planted. It collapses to refill the hole and lightly crushes the trace. Reference numeral 192 denotes a sensor for detecting the upper surface of the eaves. When the sensor 192 rotates up and down, the link mechanism 193 transmits the rotation to the up and down control valve 20a, and the angle of the sensor 192 returns to the original direction. Is activated. As a result, the aircraft is controlled to move up and down so that the height from the upper surface of the cocoon to the aircraft is kept constant, and the planting depth of the transplanted strain is controlled to be constant regardless of changes in the height of the cocoon. The growth of transplanted plants after planting is good.

  The sensor 192 is pivotally supported by a shaft 196 on an arm 195 whose rear end is fixed to a pivot shaft 194 pivotally supported on the left side of the main frame 14 and whose front end extends forward. Has been. The rotation shaft 194 is connected to the base of the planting depth adjustment lever 197. When the planting depth adjustment lever 197 is engaged and locked with the adjustment engagement portion of the engagement guide 198, the rotation shaft 194 is fixed. The rotation of the rotation shaft 194 is fixed, so that the vertical height of the shaft 196 of the arm 195 is fixed. Therefore, the sensor 192 rotates around the shaft 196 while sliding on the top surface of the arm 195, Thus, the planting depth of the transplanted strain is always controlled to be constant regardless of the height change of the ridge. Then, by adjusting the position of the planting depth adjustment lever 197 with respect to the adjustment engagement portion of the engagement guide 198 and engaging and locking it, the vertical height position of the shaft 196 of the arm 195 is set. Since it can be adjusted, the planting depth of the transplant can be adjusted because the reference position for controlling the height of the aircraft relative to the heel can be freely set.

  The right / left tilt control valve 20b in the hydraulic valve unit 20 is switched in conjunction with the movement of the left / right tilt detection pendulum 200. When the fuselage is tilted to the left and right, the rolling cylinder 27 is actuated appropriately to Control to return to left and right horizontally.

  The steering handle 6 is substantially U-shaped in plan view with both ends extending rearward, and left and right grips 6a are attached to both ends. When turning or traveling on the road, the operator holds the left and right grips 6a to operate.

  Left and right side clutch levers 201 are respectively provided below the left and right grips 6a. In addition, an operation panel 202 is provided at the base of the steering handle 6, and a planting clutch that engages and disengages the planting clutch that is transmitted to the supply device 4 and the planting device 5 and planting is operated on the operation panel 202. A lift lever 203, a main clutch lever 204 for turning on and off the main clutch, and the like are provided. Reference numeral 205 in the figure denotes an inter-strain adjustment lever that adjusts the planting interval of the transplant.

  The operation | work which transplants a vegetable transplant strain | stump | stock to a farm field by said vegetable transplanter 1 is demonstrated. First, a tray T on which a vegetable transplant is grown is loaded on the mounting table 90. Then, the operator grasps the left and right grips 6a of the steering handle 6 at the rear part of the aircraft and walks along the ridges behind the right rear wheel 2 to turn on the main clutch lever 204 to move the left and right front wheels 3 and the left and right rear wheels 2 together. The airframe is advanced along the groin, the planting lift lever 203 is operated, the planting clutch is engaged, and the body control mechanism is controlled to perform the transplanting operation. At this time, the extraction claw 41 takes out the transplanted strains one by one from the tray T of the mounting table 90 that reciprocates left and right, and drops it into the planting tool 42. Then, after the planting tool 42 has planted the transplant on the heel, the pair of left and right pressure wheels 180 gently press the left and right sides of the transplant.

DESCRIPTION OF SYMBOLS 1a Traveling part 9 Engine 38 Drainage device 42 Planting tool 102 Exhaust tank 103 Exhaust guide cylinder 109 Exhaust lid 204 Traveling clutch operation tool (main clutch lever)

Claims (6)

In a seedling transplanting machine for planting transplanted seedlings by raising and lowering the planting tool (42) on the ridge (U) surface on which the multi-film is laid,
A seedling transplanter provided with a drainage device (38) for removing water drops on the multi-film on the front side of the planting tool (42).   The seedling transplanter according to claim 1, wherein the drainage device (38) blows hot air over the multi-film.   The seedling transplanter according to claim 2, wherein the drainage device (38) sprays exhaust gas from the engine (9) onto the multi-film.   The exhaust gas from the engine (9) is temporarily accumulated in an exhaust tank (102), and then the exhaust gas is jetted onto the multi-film by an exhaust guide tube (103). Seedling transplanter.   The seedling according to claim 4, wherein an exhaust lid (109) is provided at an exhaust gas introduction portion from the engine (9) to the exhaust tank (102) so that the exhaust gas can be directly discharged to the outside air. Transplanter. When the opening / closing of the exhaust lid (109) and the operation of the traveling clutch operating tool (204) for engaging / disengaging the clutch of the traveling portion (1a) are interlocked, and the traveling clutch operating tool (204) is switched to the clutch disengaged, the exhaust lid The seedling transplanter according to claim 5, wherein (109) is switched to the outside air discharge side.