JP2016220607A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter capable of adjusting a discharge position of fertilizer.SOLUTION: A transplanter comprises: a machine body; a travel device provided in the machine body; a planting tool supported on the machine body movably in a vertical direction for forming planting holes by being driven into a field, and planting seedlings to the planting holes; a fertilizing device provided in the machine body for feeding fertilizer to the vicinity of the planted seedlings; and an adjustment member for adjusting a discharge position of the fertilizer. The fertilizing device comprises: a fertilizer tank for storing the fertilizer; a delivery device for delivering the fertilizer in the fertilizer tank; a fertilizer discharge part located near the planting tool; and a guide tube for guiding the fertilizer delivered from the delivery device to the fertilizer discharge part. The adjustment member adjusts the discharge position of the fertilizer discharged from the fertilizer discharge part.SELECTED DRAWING: Figure 18A

Description

  The present invention relates to a transplanter for transplanting seedlings such as tobacco seedlings and lettuce seedlings.

Conventionally, the technique disclosed in Patent Document 1 is known as a transplanter.
The transplanter disclosed in Patent Document 1 includes an airframe, a traveling device, a planting tool that is supported by the airframe so as to move up and down, descends, enters a farm field, and plants seedlings, and a fertilizer that supplies fertilizer. Have.

Japanese Utility Model Publication No. 5-76218

In conventional transplanters, the fertilizer discharge position could not be adjusted.
Then, an object of this invention is to provide the transplant machine which can plant a seedling and fertilize, and can adjust the discharge position of a fertilizer in view of the said problem.

The technical means taken by the present invention to solve the technical problems are characterized by the following points.
The transplanter of the invention according to claim 1 is a machine body, a traveling device provided in the machine body, supported by the machine body so as to be movable up and down, and enters a farm field to form a planting hole and the planting hole A planting tool for planting seedlings, a fertilizer supplying device for supplying fertilizer to the vicinity of the planted seedlings, and an adjusting member for adjusting the discharge position of the fertilizer.

In the transplanter of the invention according to claim 2, the fertilizer application includes a fertilizer tank that stores fertilizer, a feeding device that feeds out the fertilizer in the fertilizer tank, a fertilizer discharge section located in the vicinity of the planting tool, And a guide pipe that guides the fertilizer fed from the feeding device to the fertilizer discharge section, and the adjustment member adjusts a discharge position of the fertilizer discharged from the fertilizer discharge section.
In the transplanter of the invention according to claim 3, the fertilizer discharge portion has a discharge port facing downward, and the adjustment member includes a first adjustment member disposed inside the machine body of the discharge port, and the discharge port. A second adjusting member disposed outside the fuselage, and the first adjusting member and the second adjusting member are supported by the fertilizer discharger so as to be swingable about a front-rear axis.

  In the transplanter of the invention according to claim 4, the fertilizer discharge part has a discharge tube having the discharge port at a lower end, and the first adjustment member and the second adjustment member are attached to the discharge tube, and are discharged. The cylinder is adjustable around the front-rear axis.

The present invention has the following effects.
The seedling can be planted by the planting tool, the fertilizer can be supplied in the vicinity of the seedling planted by the fertilizer application device, and the discharge position of the fertilizer can be adjusted by the adjusting member.
Further, the fertilizer stored in the fertilizer tank can be fed out by the feeding device, and the fed fertilizer can be guided to the fertilizer discharge section through the guide tube, and the discharge position of the fertilizer discharged from the fertilizer discharge section is adjusted by the adjustment member be able to.

The adjustment member includes a first adjustment member disposed on the inside of the discharge port and a second adjustment member disposed on the outside of the discharge port. The first adjustment member and the second adjustment member are disposed on the outside of the discharge port. By supporting the member so as to be swingable around the longitudinal axis, the fertilizer discharge position can be adjusted well.
In addition to the adjustment of the fertilizer discharge position by the first adjustment member and the second adjustment member, the direction of the discharge port at the lower end of the discharge tube can be changed, so the range of adjustment of the fertilizer discharge position can be increased. In addition, the adjustment of the fertilizer discharge position can be finely adjusted.

It is a side view of a transplant machine. It is a top view of a transplant machine. It is a side view of an airframe. It is a systematic diagram which shows power transmission. It is the side view which showed arrangement | positioning of a planting apparatus, a seedling supply apparatus, a fertilizer application apparatus, and a irrigation apparatus. It is a side view of a planting apparatus. It is a side view of a soil removal board and a soil removal board support mechanism. It is a side view of a seedling supply device. It is a top view of a seedling supply device. It is a side view of the member which supports a seedling stand and a seedling stand. It is a rear view of a seedling stand and a support part. It is the elements on larger scale of the support part of a seedling stand. It is a side view of a locking mechanism. It is a side view which shows the state which a seedling stand is located in a 1st position. It is a side view which shows the state which a seedling stand is located in a 2nd position. It is a rear view of a fertilizer applicator. It is a perspective view of a feeding roll. It is explanatory drawing of extension. It is a rear view of a fertilizer discharge part. It is a perspective view of a fertilizer discharge part. It is a side view of a fertilizer discharge part. It is a back sectional view of a manure discharge part. It is a side view of an arm operation mechanism. It is a top view of a pulling lever. It is a plane sectional view of a cam roller. It is a left side view of an irrigation apparatus. It is a plane sectional view of an irrigation apparatus. It is a back sectional view of an irrigation apparatus. It is a side view of the right side of an irrigation apparatus. It is side surface sectional drawing of the left side of an irrigation apparatus. It is C arrow line drawing of FIG. FIG. 29 is an arrow D diagram of FIG. 28. It is a rear view of a cam drive shaft, a cam, and a cam adjustment mechanism. It is a side view of a cam. It is a side view of a cam adjustment mechanism. It is a side view which shows the action | operation of an opening-and-closing lid. It is a side view of an implantation apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 35 shows a transplantation device 3 including the transplanter 1 and a carriage 2 that accompanies the transplanter 1. The transplanter 1 is a walking type transplanter that plants the seedling 5 in a farm field. Specifically, the transplanter 1 is referred to as cell-molded seedlings such as tobacco and vegetables, soil block seedlings, pot seedlings, etc. while moving along the straws 4 across the straws 4 formed in the field. This is a transplanter for planting the seedling 5 at a predetermined interval.

  The carriage 2 includes a loading platform 6, a traveling device 7 that supports the loading platform 6 so as to travel, and a prime mover such as an engine 8 mounted on the loading platform 6. The traveling device 7 is a crawler traveling device 7 and is driven by an engine 8. A water supply tank 9 and a water supply pump 10 are mounted on the loading platform 6. A multi-film laying device 11 for laying the multi-film is provided at the rear part of the loading platform 6.

FIG. 1 shows a side view of the transplanter 1, and FIG. 2 shows a plan view of the transplanter 1. In the embodiment, the direction of the arrow A1 in FIGS. 1 and 2 will be referred to as the front, the direction of the arrow A2 in FIGS. 1 and 2 as the rear, the direction of the arrow B1 in FIG. 2 as the left, and the direction of the arrow B2 in FIG. .
Moreover, as shown in FIG. 2, the horizontal direction which is a direction orthogonal to the front and rear of the transplanter 1 will be described as the body width direction. The direction from the central part of the transplanter 1 toward the right part or the left part will be described as the outside of the machine body. In other words, the outward direction of the aircraft is the direction away from the transplanter 1 in the width direction of the aircraft. The direction opposite to the outside of the aircraft will be described as the inside of the aircraft. In other words, the in-machine direction is the width direction of the machine body and the direction approaching the transplanter 1.

As shown in FIGS. 1 and 2, the transplanter 1 includes a machine body 12, a traveling device 13, a planting device 14, a seedling supply device 15, a seedling mount 16, a fertilizer application device 17, and an irrigation device 18. And.
As shown in FIG. 3, the airframe 12 includes a mission case 19, a gantry 20, and a main frame 21. The mission case 19 is located between the gantry 20 and the main frame 21. The gantry 20 is attached to the front portion of the mission case 19. The gantry 20 protrudes forward from the mission case 19. The main frame 21 is attached to the rear part of the mission case 19. The main frame 21 protrudes rearward from the mission case 19. The main frame 21 includes a first frame 22 attached to the rear portion of the mission case 19 and a second frame 23 attached to the front and rear middle portions of the first frame 22. A steering handle 24 is attached to the rear portion of the second frame 23. The steering handle 24 extends rearward.

  As shown in FIG. 1, an engine 258, which is one of prime movers, and a fuel tank 25 are mounted on the gantry 20, that is, on the front portion of the airframe 12. The power of the engine 258 is input to the transmission case 19 via a power transmission mechanism such as a belt transmission mechanism. The power input into the mission case 19 is output from the mission case 19 via a clutch, a transmission mechanism, or the like. The traveling device 13, the planting device 14, the seedling supply device 15, the fertilizer application device 17, and the irrigation device 18 are driven by the power output from the mission case 19.

  FIG. 4 shows a mission case 19 and a power transmission system of a work system that transmits power from the mission case 19 to the planting device 14, the seedling supply device 15, the fertilizer application device 17, and the irrigation device 18. The mission case 19 has a first output shaft 26 that outputs the power of the traveling system, and a second output shaft 27 that outputs the power of the work system. The first output shaft 26 projects from the right and left lower portions of the mission case 19 in the body width direction. The second output shaft 27 protrudes leftward from the rear part of the mission case 19. A first sprocket 28 is attached to the second output shaft 27 so as to be integrally rotatable.

The power transmission system of the working system includes a first drive shaft 29, a second sprocket 30, a third sprocket 31, a second drive shaft 32, a fourth sprocket 33, a third drive shaft 34, a fifth sprocket 35, and a fourth drive shaft. 36, a sixth sprocket 37, a first chain 38, a second chain 39, a third chain 40, and a tension sprocket 41.
The first drive shaft 29 is a drive shaft that drives the planting device 14. The second sprocket 30 and the third sprocket 31 are attached to the first drive shaft 29 so as to be integrally rotatable. The second drive shaft 32 is a drive shaft that drives the fertilizer application 17. The fourth sprocket 33 is attached to the second drive shaft 32 so as to be integrally rotatable. The third drive shaft 34 is a drive shaft that drives the seedling supply device 15. The fifth sprocket 35 is attached to the third drive shaft 34 so as to be integrally rotatable. The fourth drive shaft 36 is a drive shaft that drives the irrigation apparatus 18. The sixth sprocket 37 is attached to the fourth drive shaft 36 so as to be integrally rotatable.

The first chain 38 is wound around the first sprocket 28 and the second sprocket 30. The power from the second output shaft 27 is transmitted to the first drive shaft 29 by the first chain 38. The second chain 39 is wound around the third sprocket 31, the fourth sprocket 33, the fifth sprocket 35 and the sixth sprocket 37. As a result, the power from the first drive shaft 29 is transmitted to the second drive shaft 32, the third drive shaft 34 and the fourth drive shaft 36. The third chain 40 transmits power from the sixth sprocket 37 to the seventh sprocket 43 attached to the cam drive shaft 42 so as to be integrally rotatable. The tension sprocket 41 imparts tension to the second chain 39. Thus, in conjunction with the first drive shaft 29 of the planting device 14, the second drive shaft 32 of the fertilizer application device 17 and the first of the seedling supply device 15 The third drive shaft 34, the fourth drive shaft 36 of the irrigation apparatus 18 and the cam drive shaft 42 are driven. That is, in conjunction with the planting device 14, the fertilizer application device 17, the seedling supply device 15, and the irrigation device 18 are driven. The second to seventh sprockets 30, 31, 33, 35, 37, 43 are formed to have the same diameter, and the first driving shaft 29 makes one rotation, whereby the second to fourth driving shafts 32, 34, 36 and the cam driving shaft. 42 rotates once.

As shown in FIGS. 2 and 3, the traveling device 13 is a device that supports the vehicle body 12 so as to be able to travel. The traveling device 13 is provided on the right and left sides of the airframe 12 and has a front wheel 44 and a rear wheel 45. Each of the front wheel 44 and the rear wheel 45 is a tire wheel that rolls in the groove between the flanges 4, and the position of the front wheel 44 and the rear wheel 45 can be adjusted in the body width direction relative to the body 12. The front wheel 44 is an idle wheel.
The inward side of the axle case 46 is connected to the right and left sides of the transmission case 19 so as to be rotatable about a horizontal axis (axis in the machine width direction). The upper part of the transmission case 47 is connected to the outer side of each axle case 46. A rear axle 48 is provided at the lower part of each transmission case 47. A rear wheel 45 is supported on each rear axle 48 so as to be integrally rotatable. The right end side of the first output shaft 26 is inserted into the right axle case 46, and the left end side of the first output shaft 26 is inserted into the left axle case 46. The power from the first output shaft 26 is transmitted to the rear axle 48 via the transmission shaft in the axle case 46 and the power transmission mechanism in the transmission case 47. As a result, the rear axle 48 is driven around the axis and the rear wheel 45 rotates.

  The right front wheel 44 is rotatably supported by a lower portion of the right front wheel support arm 49 via a front axle 50. The left front wheel 44 is rotatably supported via a front axle 50 under the left front wheel support arm 49. A square tube portion 51 is provided on the upper portion of each front wheel support arm 49. Each square tube portion 51 is supported on an arm support shaft 52 so as to be rotatable around a horizontal axis. The arm support shaft 52 is attached to the front portion of the gantry 20 so as to be rotatable around a horizontal axis.

  A front portion of the connecting arm 53 is connected to the arm support shaft 52 so as to be relatively rotatable. The rear portion of the connecting arm 53 is connected to the axle case 46 so as to be relatively rotatable. The axle case 46 and the arm support shaft 52 are interlocked by an interlocking link 54. When the axle case 46 rotates, the arm support shaft 52 rotates, and both the transmission case 47 and the front wheel support arm 49 swing up and down. As a result, the right and left front wheels 44 and the right and left rear wheels 45 move up and down at the same time so that the airframe 12 can move up and down.

As shown in FIGS. 1 and 5, the planting device 14 is provided in the rear part of the machine body 12.
As shown in FIG. 6, the planting device 14 includes a planting tool 55 for planting the seedling 5 and a planting tool support device 56 that supports the planting tool 55 so as to be movable up and down.
The planting tool 55 enters the field when descending to form a planting hole 66 (see FIGS. 1 and 16), and the seedling 5 is planted in the planting hole 66. The planting tool 55 is open at the top, and can hold the seedling 5 that has been introduced from above. Specifically, the planting tool 55 has an openable / closable opener 57 (beak-type opener).

The planting tool support device 56 includes a first link 58, a second link 59, a swing plate 60, a third link 61, and a fourth link 62.
Upper ends of the first link 58 and the second link 59 are pivotally supported by a support plate 63 fixed to the main frame 21. The lower ends of the first link 58 and the second link 59 are pivotally supported by the swing plate 60. Front ends of the third link 61 and the fourth link 62 are pivotally supported on the swing plate 60. The rear end sides of the third link 61 and the fourth link 62 are pivotally supported by the planting tool 55.

A link shaft 64 is provided in the middle of the third link 61. One end side of the rotary arm 65 is pivotally supported on the link shaft 64. The other end side of the rotary arm 65 is fixed to the first drive shaft 29. Accordingly, when the first drive shaft 29 rotates, the third link 61 and the fourth link 62 swing up and down, and the first link 58 and the second link 59 swing back and forth, so that the planting tool 55 Moves along a substantially elliptical trajectory that is long up and down. The first drive shaft 2
By one rotation of 9, the planting tool 55 moves up and down and reciprocates up and down once.

  The planting tool 55 is in a state in which the opening device 57 is closed at the top dead center of the moving range, and the seedling 5 is dropped and supplied from the seedling supply device 15. When the planting tool 55 descends and enters the field, the opening device 57 opens. When the opening device 57 is opened, a planting hole 66 (see FIGS. 1 and 16) is formed in the field, and the seedling 5 is discharged into the planting hole 66. The planting tool 55 moves rearward and upward while closing the opening device 57 after releasing the seedling 5. The back-and-forth movement of the planting tool 55 in the substantially elliptical locus is canceled because the airframe 12 is moving forward. Therefore, the planting tool 55 enters into the vertical position with respect to the rod 4 and comes out in a substantially vertical position to plant the seedling 5 in a substantially upright position.

  As shown in FIG. 6, a soil removal board 68 that forms a large hole 67 (see FIGS. 1 and 16) larger than the planting hole 66 in the front-rear direction and in the body width direction is provided in front of the lower portion of the planting tool 55. Yes. The earth removing plate 68 is formed of a sheet metal material. As shown in FIG. 7, an elastic plate material 69 protruding upward from the soil discharge plate 68 is attached to the front upper portion of the soil discharge plate 68. A resin member 70 is attached to the front side of the earth discharging plate 68.

As shown in FIG. 7, the earth removal board 68 is supported by the earth removal board support mechanism 71. The earth discharge plate support mechanism 71 includes a support rod 72, an urging member 73, and an operation member 74.
The front end side of the support rod 72 is pivotally supported by a support member 75 provided at the lower end of the mission case 19. An earth discharging plate 68 is attached to the rear end side of the support rod 72. The support rod 72 moves up and down in conjunction with the planting tool 55. The support rod 72 is bent upward so as to approach the first drive shaft 29, and a contact plate 76, a bar 77, and a guide pin 78 are fixed to the middle of the support rod 72.

  The urging member 73 is formed by a tension coil spring. The lower end of the urging member 73 is hooked on the bar 77. The upper end of the urging member 73 is connected to an adjustment rod 79 provided on the main frame 21. The urging member 73 urges the middle part of the support rod 72 upward. Further, by adjusting the position of the adjustment rod 79 up and down, the urging force for lifting the support rod 72 can be adjusted.

  The operating member 74 is moved downward by the rotation of the first drive shaft 29 to lower the support rod 72. A base portion of a swing arm 80 is pivotally supported on the link shaft 64, and an actuating member 74 is pivotally supported on the tip of the swing arm 80 via a swing shaft 81. The actuating member 74 is made of a plate material having a four-leg shape, and a cylindrical boss member 82 is fixed thereto. The boss member 82 is connected to the swing arm 80 via a swing shaft 81.

A restricting portion 83 is formed on the leg portion located at the front upper portion, and a roller 85 capable of contacting the contact plate 76 via the shaft 84 is provided on the leg portion located at the front lower portion. As the roller 85 moves down, the front and rear halfway portions of the support rod 72 are pushed down. Further, a long hole 86 that fits into the guide pin 78 is formed in the leg portion located in the lower rear portion, and a stopper portion 87 is formed in the leg portion located in the upper rear portion.
When the operating member 74 rotates about the swing shaft 81, the restricting portion 83 contacts the base of the swing arm 80 and restricts the upward rotation of the operating member 74.

  Since the support rod 72 is always urged upward by the urging member 73, when the guide pin 78 is at the upper end of the elongated hole 86, an upward urging force is applied to the operating member 74, and the regulating portion 83 is shaken. The guide pin 78 is urged in the direction in contact with the base of the moving arm 80, and allows the guide pin 78 to move downward through the elongated hole 86. The stopper portion 87 abuts on the base portion of the swing arm 80, thereby restricting the operation member 74 from rotating around the swing shaft 81 by a predetermined angle or more in the counterclockwise direction.

When the restricting portion 83 is restricted from turning upward by the urging force from the support rod 72 and is in contact with the base of the swing arm 80, the actuating member 74 is integrated with the swing arm 80 and the first drive shaft 29. Rotate around. As a result, the operating member 74 is moved downward along with the downward rotation of the link shaft 64, and the roller 85 comes into contact with the contact plate 76 of the support rod 72 by this rotation, and the support rod 72 is lowered. When the support rod 72 descends, the earth removal board 68 enters the rod 4 to form a large hole 67 larger than the planting hole in the front-rear direction and the body width direction. When the large hole 67 is formed, the elastic plate member 69 prevents the soil removed by the earth removing plate 68 from moving over the earth removing plate 68 to the large hole 67 side. Further, the resin plate prevents soil from adhering to the front surface of the soil discharge plate 68. The planting tool 55 has a large hole 6
A planting hole 66 is formed at a substantially central portion in the front and rear direction of 7.

As shown in FIGS. 1 and 8, the seedling supply device 15 is provided at the rear of the machine body 12 and at the rear upper side of the planting tool 55. That is, the planting tool 55 is provided below the front portion of the seedling supply device 15.
As shown in FIGS. 8 and 9, the seedling supply device 15 is a device that supplies the seedling 5 to the planting tool 55 when the planting tool 55 is raised, and includes a turntable 88, a seedling supply tool 89, A supply drive mechanism 90 and a setting member 91 are provided.

The turntable 88 is rotatably supported on the vertical axis 92.
A large number of seedling supply tools 89 are arranged in the circumferential direction on the outer peripheral side of the turntable 88 and rotate integrally with the turntable 88. The seedling supply tool 89 can input the seedling 5 from above, and can store and drop the seedling 5. Specifically, the seedling supply tool 89 includes a cup 93 and a bottom lid 94. The bottom lid 94 is provided below the bottom opening of the cup 93 so as to be openable and closable via a hinge. In the state where the bottom lid 94 is closed, the seedling 5 is held in the cup 93.

The supply drive mechanism 90 includes a third drive shaft 34, a vertical axis 92 that supports the turntable 88, and a transmission unit 95 that transmits power from the third drive shaft 34 to the vertical axis 92. The transmission means 95 includes a worm 96 and a worm wheel 97. The supply drive mechanism 90 drives the turntable 88 in synchronization with the vertical movement of the planting tool 55.
The setting member 91 is a rod-like member that determines opening and closing of the bottom lid 94. The setting member 91 is provided below the turntable 88, and is disposed in the vicinity of the bottom surface of the bottom cover 94 of the seedling supply tool 89 and the separation portion disposed in a position away from the bottom surface of the bottom cover 94. Including. A separation portion of the setting member 91 is a seedling supply position 98. The proximity portion supports the bottom lid 94 and closes. Since the separating portion is separated from the lower surface of the bottom cover 94, the bottom cover 94 is released from being closed, and the seedling 5 is dropped and supplied to the planting tool 55 located immediately below the seedling supply position 98. When the seedling supply tool 89 passes the seedling supply position 98 (separating portion), the bottom lid 94 rides on the setting member 91 and the bottom lid 94 is closed.

  As shown in FIG. 1, the seedling mount 16 is disposed in front of the seedling supply device 15. The seedling table 16 is formed in a width extending from the right traveling device 13 to the left traveling device 13. The seedling stage 16 is a stage for placing the seedling 5 supplied to the seedling supply device 15. The seedling 5 is grown in a state of being put in a cell tray (nursing seedling tray), and the cell tray is placed on the seedling placing stand 16, and the seedling 5 on the seedling placing stand 16 is supplied to the seedling supply device 15.

  As shown in FIGS. 10 to 12, the seedling stage 16 is supported on a support body 99 attached to the machine body 12 via a fixed frame 100 and a movable frame 101. The support body 99 includes a front leg portion 102 supported by the connection frame 53, a rear leg portion 103 supported by the main frame 21, and a connection portion 104 that connects upper ends of the front leg portion 102 and the rear leg portion 103. .

  The fixed frame 100 is attached to the connecting portion 104 of the support body 99. A first guide groove 105 and a second guide groove 106 are formed in the fixed frame 100. The first guide groove 105 has an inclined shape that extends forward and backward and shifts downward as it goes forward. The second guide groove 106 is inclined so as to extend forward and backward and shift upward as it goes forward. A locking groove 107 is formed at the front end of the second guide groove 106.

The movable frame 101 has a first guide roller 108 fitted in the first guide groove 105 and a second guide roller 109 fitted in the second guide groove 106. The movable frame 101 is supported by the fixed frame 100 via the first guide roller 108 and the second guide roller 109. The movable frame 101 is attached to the lower part of the seedling mount 16. The seedling stage 16 can be changed in position to a first position 110 shown in FIG. 14 and a second position 111 shown in FIG.
The first position 110 is a normal position (a position such as when the seedling stage 16 is used), and an operator who accompanies the transplanter 1 takes the seedling 5 from the seedling stage 16 and removes the seedling 5. This is the position where the seedling supply device 15 is supplied. In the state where the seedling stage 16 is located at the first position 110, the first guide roller 108 is located at the rear end of the first guide groove 105, and the second guide roller 109 is located at the rear end of the second guide groove 106. It is located, and the seedling mount 16 is inclined downwardly. Also,
In the first position 110, the rear part of the seedling platform 16 is located close to the upper position of the fertilizer tank 112. Thereby, the seedling stage 16 and the fertilizer tank 112 (fertilizer 17) can be arranged in a compact manner.

  The second position 111 is a position (retreat position) where the seedling stage 16 is retracted from the position above the fertilizer tank 112. From the first position 110, when the first guide roller 108 moves forward in the first guide groove 105 and the second guide roller 109 moves forward in the second guide groove 106, the seedling stage 16 moves forward. Then, it moves to the second position 111. Therefore, in the present embodiment, at the second position 111, the rear portion of the seedling stage 16 is retracted forward from the upper position of the fertilizer tank 112. Thus, even if the seedling stage 16 and the fertilizer tank 112 are disposed close to each other (compactly disposed), it becomes easy to supply the fertilizer to the fertilizer tank 112, maintain the fertilizer tank 112, and the like. Further, in a state where the seedling placing table 16 is located at the second position 111, the second guide roller 109 is fitted into the locking groove 107, and thereby the rearward movement of the seedling placing table 16 is restricted. Moreover, in the 2nd position 111, the seedling stand 16 becomes a substantially horizontal state.

In addition, you may make it retract | save the seedling stand 16 from the upper position of the fertilizer tank 112 to upper direction or the front upper direction.
A lock mechanism 113 that fixes the seedling mount 16 to the first position 110 is provided at the rear portion of the fixed frame 100. As shown in FIG. 13, the lock mechanism 113 includes a lock lever 114 and an urging member 115. A boss 116 is provided in the middle of the lock lever 114. The boss 116 is pivotally supported on the rear end of the fixed frame 100 via a lever shaft 119. A front portion of the lock lever 114 is a hook portion 117 that engages with the second guide roller 109. The rear portion of the lock lever 114 is a grip portion 118 that operates the lock lever 114. The urging member 115 is composed of a tension coil spring. One end of the coil spring is hooked to a first spring hook member 119 fixed to the boss portion 116. The other end of the coil spring is hooked on a second spring hook member 120 fixed to the fixed frame 100. The urging force of the coil spring acts in the direction in which the hook portion 117 is engaged with the second guide roller 109 located at the rear end position of the second guide groove 106. When the hook portion 117 is engaged with the second guide roller 109, the seedling stage 16 is held at the first position 110. By depressing the grip portion 118 of the lock lever 114, the hook portion 117 swings upward around the lever shaft 119 and disengages from the second guide roller 109.

As shown in FIG. 1, the fertilizer application device 17 is provided at the rear part of the machine body 12. As shown in FIG. 16, the fertilizer application device 17 includes a fertilizer tank 112 that stores fertilizer, and a fertilizer supply device 121 that supplies the fertilizer in the fertilizer tank 112 to the vicinity of the planting portion of the seedling 5.
As shown in FIG. 1, the fertilizer tank 112 has a pair and is provided on the right side and the left side of the machine body 12. Further, the fertilizer tank 112 is disposed in front of the seedling supply device 15 and below the rear portion of the seedling mount 16 and is attached to the body 12. The fertilizer tank 112 is formed with an inlet for introducing fertilizer. The insertion port is closed by a lid 122 so as to be freely opened and closed. At the lower end of the fertilizer tank 112, an annular edge portion that forms a discharge port 123 for discharging the fertilizer is formed. The insertion port is closed by a lid 122 so as to be freely opened and closed.

As shown in FIGS. 16 and 17, the fertilizer supply device 121 is attached to the machine body 12 together with the fertilizer tank 112. The fertilizer supply device 121 includes a feeding device 124, a fertilizer discharge unit 125, a guide tube 126, and an arm operation mechanism 127. The feeding device 124, the fertilizer discharge unit 125, and the guide tube 126 have a pair corresponding to the fertilizer tank 112.
The feeding device 124 is a device that feeds the fertilizer in the fertilizer tank 112. The fertilizer discharge part 125 is a part which discharges the fertilizer in the vicinity of the planted seedling 5. The guide tube 126 is a member that guides the fertilizer fed from the feeding device 124 to the fertilizer discharge unit 125, and includes a flexible tube. The arm operating mechanism 127 is a mechanism that operates an opening / closing arm 128 described later.

The feeding device 124 is provided below the fertilizer tank 112 and includes a case 264, a feeding roll 129, and a discharge duct 130. An annular edge portion (receiving portion) that forms the receiving port 263 is formed at the upper end of the case 264. The receiving port 263 communicates with the discharge port 123 formed at the lower end of the fertilizer tank 112 and receives the fertilizer discharged from the discharge port 123 of the fertilizer tank 112. The inner wall 264A of the case 264 is close to the surface of the feeding roll 129. An annular edge portion that forms a discharge port 265 for discharging fertilizer from the case 264 is formed at the lower portion of the case 264 and on the side facing the receiving port 263.

The feeding roll 129 is accommodated in the case 264. The second drive shaft 32 passes through the left and right cases 264 and the feeding roll 129 in the case 264. The feeding roll 129 can rotate integrally with the second drive shaft 32 and is driven by the rotation of the second drive shaft 32.
As shown in FIGS. 17A and 17B, the feeding roll 129 includes a feeding portion 132 and a non-feeding portion 133. The feeding portion 132 has a plurality of grooves 131 formed by denting the surface of a cylindrical roll in the radially inward direction. In this embodiment, the plurality of grooves 131 are provided at predetermined intervals in the circumferential direction of the feeding roll 129. Moreover, the non-feeding-out part 133 is the site | part comprised by making a cylindrical roll flat without being recessed. The feeding roll 129 is rotatably supported by the case 264, and the feeding portion 132 (the plurality of grooves 131) and the non-feeding portion 133 rotate inside the case 264 as the feeding roll 129 rotates.

  In a situation where the feed roll 129 is rotating, when the groove 131 reaches the vicinity of the receiving portion, the fertilizer put into the receiving port 263 of the case 264 enters the groove 131. When the groove 131 reaches the edge forming the discharge port 265 of the case 264 with the fertilizer contained, the fertilizer in the groove 131 is discharged from the groove 131 to the discharge port 265. Then, the fertilizer at the discharge port 265 falls into the discharge duct 130 from below the case 264. On the other hand, when the non-feeding part 133 passes in the vicinity of the receiving part under the condition where the feeding roll 129 is rotating, the fertilizer that has entered the receiving port 263 stays, and the lower part of the case 264, that is, the discharge port 265. Do not move toward. That is, when the non-feeding part 133 passes near the receiving part, the fertilizer is not fed from the case 264.

As shown in FIG. 16, the discharge duct 130 is provided at the lower end of the case 264 and discharges the fertilizer fed by the feeding roll 129 by dropping it downward. Further, the upper end portion of the guide tube 126 is connected to the lower portion of the discharge duct 130.
The fertilizer discharge part 125 is located in the vicinity of the side of the planting tool 55 and in the vicinity of the upper surface of the rod 4. One fertilizer discharge part 125 is arranged on the right side of the planting tool 55, and the other fertilizer discharge part 125 is arranged on the left side of the planting tool 55.

18-20 has shown the fertilizer discharge part 125 of the left side. Since the right fertilizer discharge part 125 is symmetrical, illustration is omitted.
The fertilizer discharge unit 125 includes a discharge tube 134, a shutter 135, an opening / closing arm 128, and a biasing spring 136.
The discharge tube 134 is formed of a rectangular tube-shaped member that is open at both axial ends. The discharge cylinder 134 is arranged in an inclined shape so as to move toward the inside of the machine body as the axis moves downward. The lower end of the guide tube 126 is connected to the upper end of the discharge tube 134. Accordingly, the fertilizer in the fertilizer tank 112 fed from the feeding device 124 is guided to the upper end portion of the discharge cylinder 134 through the guide pipe 126 and passes through the passage in the discharge cylinder 134 and the lower end of the discharge cylinder 134. It is possible to discharge from the opening. An opening at the lower end of the discharge cylinder 134 is a discharge port 137 for discharging fertilizer.

  The discharge cylinder 134 is attached to the machine body 12 via the first bracket 138. The first bracket 138 is formed in an L shape from a first wall 139 and a second wall 140 orthogonal to the first wall 139. The first wall 139 is fixed to a mounting portion (not shown) fixed to the body 12 by bolts. The second wall 140 is attached to a mounting seat 143 provided on the front surface of the discharge tube 134 by a first bolt 141 and a second bolt 142.

The first bolt 141 is located above the second bolt 142. Both the first bolt 141 and the second bolt 142 have axial centers in the front-rear direction. As shown in FIG. 18, a first insertion hole 144 and a second insertion hole 145 are formed in the second wall 140. The first insertion hole 144 is a circular hole through which the first bolt 141 is inserted. The second insertion hole 145 is an arc hole through which the second bolt 142 is inserted. The second insertion hole 145 is an arc-shaped hole with the first insertion hole 144 as the center. Accordingly, when the first bolt 141 and the second bolt 142 are loosened, the discharge tube 134 can swing in an arc shape (indicated by an arrow X1 in FIG. 20) with respect to the first bracket 138 about the first bolt 141. Become. As a result, the direction of the discharge port 137 of the discharge tube 134 (the fertilizer discharge position) can be changed in the body width direction.

  The shutter 135 is provided in the middle of the discharge tube 134. A shutter shaft 146 having an axial center in the front-rear direction is disposed below the shutter 135 and on the outer side of the machine body. A shutter 135 is supported on the shutter shaft 146. The shutter shaft 146 passes through the front and rear walls 147 and 148 of the discharge tube 134. The front portion of the shutter shaft 146 passes through the front wall 147 of the discharge tube 134 and is supported by the mounting seat 143 so as to be rotatable about the axis. The rear portion of the shutter shaft 146 passes through the rear wall 148 of the discharge tube 134 and is rotatably supported by a shaft support member 149 provided on the outer surface of the rear wall 148. The rear portion of the shutter shaft 146 passes through the shaft support member 149.

  As shown in FIG. 20, the shutter 135 rotates around the axis of the shutter shaft 146 (see arrow X2 in FIG. 20), so that the position of the shutter 135 can be changed between a closed position indicated by a solid line and an open position indicated by a virtual line. Has been. The closed position is a position where the fertilizer passage inside the discharge cylinder 134 is blocked and the fertilizer is accumulated in the discharge cylinder 134 (fertilizer discharge portion 125). The open position is a position for opening the passage in the discharge cylinder 134 and discharging the fertilizer stored in the discharge cylinder 134 (fertilizer discharge portion 125).

  As shown in FIGS. 18 and 20, in the discharge cylinder 134, a guide plate 150 that guides the fertilizer introduced into the discharge cylinder 134 toward the body side of the shutter 135 in the closed position (the opening side of the shutter 135). Is provided. The upper part of the guide plate 150 is fixed to the inner surface of the lower side wall 151 of the discharge tube 134. The lower part of the guide plate 150 is inclined so as to move downward (in the direction away from the lower wall 151 of the discharge tube 134) as it goes downward.

  The open / close arm 128 is provided on the back surface outside the discharge tube 134. The rear part of the shutter shaft 146 is fixed to the middle part of the opening / closing arm 128. A lower end of a biasing spring 136 made of a tension coil spring is hooked on the inward side of the opening / closing arm 128. The upper end of the urging spring 136 is hooked on the second bracket 153 fixed to the upper part of the discharge tube 134. The second bracket 153 is formed in an L shape from the upper wall 154 and the front wall 155 extending downward from the front end of the upper wall 154. The front wall 155 is fixed to the upper part of the outer surface of the rear wall 148 of the discharge tube 134. The upper end of the biasing spring 136 is hooked on the upper wall 154 of the second bracket 153.

  One end of an outer cable 157 of a Bowden cable 156 (operation cable) is fixed to the upper wall 154 of the second bracket 153. One end of the inner cable 158 of the Bowden cable 156 is pivotally supported on the outer side of the body of the opening / closing arm 128 via a connection tool 159. A stopper 160 that contacts the lower side wall 151 of the discharge tube 134 is provided at the lower end of the open / close arm 128 on the outer side of the machine body. The stopper 160 is in contact with the lower wall 151 of the discharge tube 134, so that the rotation of the opening / closing arm 128 by the urging force of the urging spring 136 is restricted.

  With the stopper 160 in contact with the lower wall 151 of the discharge tube 134, the shutter 135 is located at the closed position. When the inner cable 158 is pulled, the opening / closing arm 128 rotates clockwise in FIG. 18 against the urging force of the urging spring 136, and the shutter 135 is repositioned to the open position. When the tension of the inner cable 158 is released, the urging force of the urging spring 136 causes the opening / closing arm 128 to rotate counterclockwise in FIG. 18 and the shutter 135 returns to the closed position.

An adjustment member 161 that adjusts the discharge position of the fertilizer discharged from the fertilizer discharge section 125 is provided in the fertilizer discharge section 125 (lower part of the discharge tube 134). The adjustment member 161 includes a first adjustment member 162 and a second adjustment member 163. The first adjustment member 162 is disposed inside the body of the discharge port 137, and the second adjustment member 163 is a body of the discharge port 137. Arranged outside.
As shown in FIGS. 18 to 20, the first adjustment member 162 includes a first front plate portion 164 located on the front wall 147 side of the discharge tube 134 and a first rear located on the rear wall 148 side of the discharge tube 134. A plate portion 165, a first main plate portion 166 connecting the inboard side of the first front plate portion 164 and the first rear plate portion 165, and a first attachment plate portion extending upward from the upper end of the first rear plate portion 165 167.

The second adjustment member 163 includes a second front plate portion 168 positioned on the front wall 147 side of the discharge tube 134, a second rear plate portion 169 positioned on the rear wall 148 side of the discharge tube 134, and a second front plate portion. 168 and a second main plate portion 170 connecting the second rear plate portion 169 to the outer side of the machine body, and a second attachment plate portion 171 extending upward from the upper end of the second rear plate portion 169.
The first mounting plate portion 167 is swingably mounted (angle adjustable) around the front-rear axis by a first adjustment bolt 173 screwed into a nut member 172 fixed to the outer surface of the rear wall 148 of the discharge cylinder 134. Yes. The second attachment plate portion 171 is attached so as to be swingable about the front-rear axis (adjustable in angle) by a second adjustment bolt 174 screwed into a nut member 172 fixed to the outer surface of the rear wall 148 of the discharge cylinder 134. Yes.

  When the first adjustment bolt 173 is loosened, the first adjustment member 162 can swing around the first adjustment bolt 173 as indicated by an arrow X3 in FIG. Further, when the second adjustment bolt 174 is loosened, the second adjustment member 163 can swing around the second adjustment bolt 174 as indicated by an arrow X4 in FIG. By adjusting the swing angle of the first adjustment member 162 and / or the second adjustment member 163, the fertilizer discharge position in the body width direction can be adjusted satisfactorily. Further, as described above, by changing the orientation of the discharge port 137 at the lower end of the discharge cylinder 134, the adjustment range of the fertilizer discharge position can be increased, and the adjustment of the fertilizer discharge position can be finely adjusted. Can be adjusted.

  As shown in FIGS. 16 and 21 to 23, the arm operating mechanism 127 includes the Bowden cable 156, the cam roller 175, and the pulling lever 176 described above. The cam roller 175 and the pulling lever 176 are provided inside the machine body of the left feeding device 124. The cam roller 175 and the pulling lever 176 are provided on a fertilizer bracket 177 that supports the feeding device 124. The fertilizer bracket 177 is attached to a mounting portion (not shown) provided on the machine body 12.

  The cam roller 175 has a disk-shaped disk part 178 and a projecting part 179 that projects from the disk part 178 toward the outer periphery. A circular hole 180 is formed at the center of the cam roller 175, and a boss 181 is inserted into the circular hole 180 so as to be relatively rotatable. The second drive shaft 32 is inserted into the boss 181 so as to be rotatable together. The cam roller 175 is formed with a pair of arc-shaped long holes 182 centered on the axis of the second drive shaft 32. An adjustment disc 183 made of a disc having the same diameter as that of the disc portion 178 is arranged on the cam body 175 on the inward side of the machine roller. The adjustment disk 183 is fixed to the boss 181. A nut member 184 is fixed to the adjustment disc 183. A bolt insertion hole 185 is formed in the adjustment disc 183 at a position corresponding to the nut member 184. The cam roller 175 is attached to the adjustment disc 183 by an adjustment bolt 186 that is inserted through the long hole 182 and the bolt insertion hole 185 and screwed into the nut member 184.

  The pulling lever 176 includes a first pulling lever 187 and a second pulling lever 188. The first pulling lever 187 is a lever for operating the open / close arm 128 of the right fertilizer discharger 125, and the second pulling lever 188 is a lever for operating the open / close arm 128 of the left fertilizer discharger 125. is there. The first pulling lever 187 and the second pulling lever 188 are arranged above the cam roller 175 in the machine width direction. One end portions (rear end portions) of the first pulling lever 187 and the second pulling lever 188 are supported by the fertilization bracket 177 via a bearing 189 so as to be rotatable around the horizontal axis. An engagement roller 190 formed of a bearing roller is provided between the first and second pulling levers 187 and 188 in the middle of the first pulling lever 187 and the second pulling lever 188. The engagement roller 190 is supported by the first pulling lever 187 and the second pulling lever 188 by a pin 191 so as to be rotatable around the horizontal axis.

  A connector 192 is provided at the other end (front end) of the first and second pulling levers 187 and 188. The other end of the inner cable 158 connected to the right opening / closing arm 128 is connected to the connection tool 192 of the first pulling lever 187. The other end of the inner cable 158 connected to the left opening / closing arm 128 is connected to the connection tool 192 of the second pulling lever 188.

  The cam roller 175 rotates once corresponding to one reciprocation of the planting tool 55 in the vertical direction. When the planting tool 55 enters the basket 4 (farm field) to plant the seedling 5, the overhanging portion 179 of the cam roller 175 contacts the engagement roller 190 and pushes the engagement roller 190 upward. Then, both the first pulling lever 187 and the second pulling lever 188 swing upward and move the other end side of the inner cable 158. When the inner cable 158 is pulled, the outer sides of the right and left opening / closing arms 128 are pulled up and the shutter 135 is opened. At this time, the feeding portion 132 of the feeding roll 129 faces upward, and the feeding of the fertilizer from the feeding roll 129 is stopped. When the overhanging portion 179 of the cam roller 175 is disengaged from the engaging roller 190 and the lifting force of the inner cable 158 is released, the shutter 135 is closed and the fertilizer is fed from the feeding roll 129.

  In the transplanter 1 described above, seedlings can be planted by the planting tool 55 and fertilizer can be supplied in the vicinity of the seedlings planted by the fertilizer application device 17. Here, since the transplanter 1 includes the adjustment member 161, the fertilizer discharge position can be adjusted. For example, the fertilizer stored in the fertilizer tank 112 can be fed by the feeding device 124, and the fed fertilizer can be guided to the fertilizer discharge unit 125 through the guide pipe 126, and the discharge position of the fertilizer discharged from the fertilizer discharge unit 125 can be determined. It can be adjusted by the adjusting member 161.

  Since the transplanter 1 includes the shutter 135, the fertilizer fed from the feeding device 124 can be stored in the fertilizer discharge unit 125 or the guide tube 126 by closing the shutter 135. Then, the fertilizer stored in the fertilizer discharge portion 125 or the guide tube 126 can be discharged to the outside by opening the shutter 135. That is, the fertilizer can be discharged to the outside in a short time by opening the shutter 135, and the fertilization timing can be easily set by opening and closing the shutter 135. That is, fertilization can be performed on the ground or the like at an intended timing in a short time.

  The feeding roll 129 includes a feeding unit 132 that feeds the fertilizer in the fertilizer tank 112 while the shutter 135 is closed, and a non-feeding unit 133 that does not feed the fertilizer in the fertilizer tank 112 while the shutter 135 is open. have. Therefore, while the shutter 135 is closed, the fertilizer fed from the feeding roll 129 can be guided to the fertilizer discharging section 125 or the guide pipe 126, and the fertilizer before fertilization is brought close to the lower part (ground) of the machine body in advance. I can leave.

Further, when the adjustment bolt 186 is loosened and the cam roller 175 is rotated around the second drive shaft 32, the timing at which the overhanging portion 179 of the cam roller 175 contacts the engagement roller 190 can be adjusted.
In this embodiment, the fertilizer is stored in the fertilizer discharge unit 125 (discharge tube 134). However, the fertilizer may be stored in the guide tube 126.

As shown in FIG. 1, the irrigation device 18 is provided at the rear part of the machine body 12. The irrigation device 18 includes an irrigation tank 193 that stores water, and a water supply device 194 that supplies the water in the irrigation tank 193 to the planting portion of the seedling 5.
As shown in FIG. 5, the irrigation tank 193 is provided behind the planting tool 55 and below the seedling supply device 15, that is, below the rear portion of the seedling supply device 15.

As shown in FIGS. 24 to 27, the irrigation tank 193 has a front wall 195, a back wall 196, a right side wall 197, a left side wall 198, a top wall 199, and a bottom wall 200, and has a box shape. Is formed. The top wall 199 is detachably attached to the upper ends of the front wall 195 and the back wall 196 via bolts or the like. Mounting bolts 201 are fixed to the upper part of the front wall 195 and the upper part of the rear wall 196. The irrigation tank 193 is attached to a bracket (not shown) fixed to the machine body 12 via the attachment bolt 201. The bottom wall 200 is provided with a drain plug 202 for draining water from the irrigation tank 193.

A seventh sprocket 43 is disposed on the right side of the right side wall 197. The seventh sprocket 43 is attached to a cam drive shaft 42 that penetrates the irrigation tank 193 in the body width direction. The cam drive shaft 42 is supported on the right side wall 197 and the left side wall 198 via bearing devices 203 and 204 so as to be rotatable around the axis.
A water supply port 205 and a return port 206 are provided on the left side of the upper portion of the back wall 196. The water supply port 205 and the return port 206 are formed of a pipe material. The water supply port 205 is a member for taking the water in the water supply tank 9 mounted on the carriage 2 into the irrigation tank 193. The return port 206 is a member for returning the water in the irrigation tank 193 to the water supply tank 9. A water supply pump 10 that sucks water from the water supply tank 9 is mounted on the carriage 2, and a discharge port of the water supply pump 10 and a water supply port 205 are connected by a supply hose 207. One end of a return hose 208 is connected to the return port 206, and the other end side of the return hose 208 is inserted into the water supply tank 9. Therefore, the water in the water supply tank 9 circulates from the water supply pump 10 to the water supply tank 9 through the irrigation tank 193.

As shown in FIGS. 24 to 28, the water supply device 194 includes an irrigation pipe 209, a lid device 210, a lid operation mechanism 211, and a cam adjustment mechanism 212.
The irrigation pipe 209 is a pipe member that guides the water in the irrigation tank 193 to the planting part of the seedling 5. The lid device 210 is a device that opens and closes one end side of the irrigation pipe 209. The lid operating mechanism 211 is a device that operates the lid device 210. The cam adjustment mechanism 212 is a mechanism that adjusts the lid operation mechanism 211.

  As shown in FIG. 25, the irrigation pipe 209 is disposed on the front side of the irrigation tank 193. A pair of irrigation pipes 209 are provided in the body width direction, and are arranged on the right side of the planting tool 55 and the left side of the planting tool 55 (see FIG. 2). As shown in FIGS. 24 and 25, the irrigation pipe 209 includes a first drain pipe 213 fixed to the lower portion of the front wall 195, a second drain pipe 214 connected to the first drain pipe 213, and the first drain pipe 213. 2 and a third drain pipe 215 connected to the drain pipe 214. One end side of the first drain pipe 213 is inserted into the irrigation tank 193. One end side of the first drain pipe 213 serves as a drain port 216 for discharging water in the irrigation tank 193.

The second drain pipe 214 is constituted by a straight pipe, and one end side is inserted into the other end side of the first drain pipe 213. One end side of the second drain pipe 214 is attached to the other end side of the first drain pipe 213 by a bolt 217 and a nut 218. The first drain pipe 213 and the second drain pipe 214 are inclined outward from the machine body.
The third drain pipe 215 is an elbow pipe, and one end is fitted and fixed to the other end of the second drain pipe 214. The other end of the third drain pipe 215 is directed toward the inside of the aircraft. The water in the irrigation tank 193 is supplied to the planting part of the seedling 5 through the first drain pipe 213, the second drain pipe 214, and the third drain pipe 215. The planting part includes the surroundings of the seedling (roots and leaves) and the seedling itself (roots and leaves).

  As shown in FIGS. 24, 28, 29, and 30, the lid device 210 is provided in the irrigation tank 193. The lid device 210 includes an opening / closing lid 219, a lid bracket 220, and a biasing spring 221. The opening / closing lid 219 is a member that opens and closes the drain port 216. The lid bracket 220 is a member that supports the opening / closing lid 219. The biasing spring 221 is a member that presses the opening / closing lid 219 against the drain port 216.

  As shown in FIG. 28, the open / close lid 219 is provided for the right and left irrigation pipes 209, respectively. The opening / closing lid 219 includes a mounting plate 222, a packing 223, and a presser plate 224. A packing 223 is overlaid on the mounting plate 222 and a presser plate 224 is overlaid on the packing 223. The packing 223 is attached to the mounting plate 222 by screws 225 that pass through the holding plate 224 and the packing 223 and are screwed into the mounting plate 222. The drain port 216 is closed by pressing the packing 223 against the drain port 216.

  As shown in FIG. 28, the mounting plate 222 is provided with a pivot plate 226, and this pivot plate 226 is pivotally supported by a lower portion of the lid bracket 220 via a pivot 259 so as to be rotatable around a horizontal axis. ing. A bracket shaft 227 is provided on the top of the lid bracket 220. The bracket shaft 227 is supported by a bracket stay 228 fixed to the inner surface of the front wall 195, and the lid bracket 220 can swing around the bracket shaft 227.

The urging spring 221 is composed of a torsion coil spring and is externally fitted to the bracket shaft 227. One end of the urging spring 221 is hooked to the lid bracket 220. The other end of the biasing spring 221 is hooked to the bracket stay 228. The urging force of the urging spring 221 acts in a direction to press the opening / closing lid 219 against the drain port 216.
As shown in FIG. 28, the lid operating mechanism 211 is provided in the irrigation tank 193. The lid operating mechanism 211 is provided for the right and left open / close lids 219, respectively. The lid operating mechanism 211 includes a cam 229 and a cam engaging portion 230.

  As shown in FIGS. 31 and 32, the cam 229 has a pushing portion 231 that opens the opening / closing lid 219 by pushing the cam engaging portion 230. The cam 229 includes a first cam plate 232 and a second cam plate 233 superimposed on the first cam plate 232. The first cam plate 232 includes a disk-shaped first base portion 234 and a first portion 235 projecting from the first base portion 234 toward the outer periphery. The second cam plate 233 includes a disk-shaped second base 236 and a second portion 237 that projects from the second base 236 toward the outer periphery. The first portion 235 and the second portion 237 constitute a pushing portion 231.

The right and left first cam plates 232 are fixed to the first cylinder 238, respectively. A cam drive shaft 42 is fitted into each first cylinder 238, and a pin 239 is inserted into the first cylinder 238 and the cam drive shaft 42. Thus, the first cylinder 238 is supported on the cam drive shaft 42 so as to be rotatable together.
The right second cam plate 233 is fixed to the right end of the second cylinder 240. The left second cam plate 233 is fixed to the left end of the second cylinder 240. The second cylinder 240 is provided over the right first cylinder 238 and the left first cylinder 238, and is fitted on the right first cylinder 238 and the left first cylinder 238 so as to be relatively rotatable. Yes. Therefore, the second cam plate 233 is rotatable relative to the first cam plate 232 around the rotation center of the cam 229 (cam drive shaft 42). By rotating the second cam plate 233 relative to the first cam plate 232, the length 241 of the pushing portion 231 around the rotation center of the cam 229 can be changed.

The left first cam plate 232 has two arc-shaped first pin insertion holes 242 around the rotation center of the cam 229. The left second cam plate 233 has a circular second pin insertion hole 243. Two second pin insertion holes 243 are formed corresponding to the first pin insertion holes 242.
An engagement plate 244 is provided on the left side of the left first cam plate 232. The engagement plate 244 is provided with an engagement pin 245 through which the first pin insertion hole 242 and the second pin insertion hole 243 are inserted. Two engagement pins 245 are provided corresponding to the first pin insertion hole 242 and the second pin insertion hole 243. The engagement plate 244 is fixed to the right end of the third cylinder 246 that is fitted to the left side of the cam drive shaft 42 so as to be relatively rotatable. The third cylinder 246 passes through the left bearing device 204 and protrudes leftward from the irrigation tank 193.

  As shown in FIGS. 28 and 29, the cam engagement portion 230 is constituted by a bearing roller. The cam engagement portion 230 is attached to an engagement bracket 247 that is an upper portion of the lid bracket 220 and extends rearward from the back surface via a roller shaft 248 so as to be rotatable about a horizontal axis. Therefore, the cam engaging portion 230 swings integrally with the opening / closing lid 219 around the axis of the bracket shaft 227.

As shown in FIG. 28, the portion of the cam 229 other than the pushing portion 231 is configured not to contact the cam engaging portion 230. When the cam 229 is not in contact with the cam engagement portion 230, the opening / closing lid 219 is pressed against the drain port portion 216 by the biasing spring 221, and the drain port portion 216 is closed by the opening / closing lid 219.
As shown in FIG. 34, when the pushing portion 231 of the cam 229 comes into contact with the cam engaging portion 230 and pushes the cam engaging portion 230, the lid bracket 220 rotates around the bracket shaft 227 and the opening / closing lid 219 is moved. Separated from the drain port 216, the drain port 216 opens. Thereby, the water in the irrigation tank 193 is drained to the planting part of the seedling 5 through the irrigation pipe 209.

  As shown in FIG. 31, the cam adjustment mechanism 212 is provided on the left side of the irrigation tank 193. As shown in FIGS. 31 and 33, the cam adjustment mechanism 212 includes a first adjustment plate 249 and a second adjustment plate 250. The first adjustment plate 249 is externally fitted to the portion of the third cylinder 246 that protrudes to the left from the irrigation tank 193 so as to be integrally rotatable. The second adjustment plate 250 is externally fitted to a portion of the cam drive shaft 42 protruding leftward from the third cylinder 246 so as to be integrally rotatable. The cam drive shaft 42 protrudes leftward from the second adjustment plate 250, and a portion protruding leftward from the second adjustment plate 250 is a screw portion 251. The screw member 251 is screwed with a nut member 252 for retaining. A circular bolt insertion hole 253 is formed in the first adjustment plate 249. A nut member 254 whose screw hole matches the bolt insertion hole 253 is fixed to the right side surface of the first adjustment plate 249. The first adjustment plate 249 is provided with a first grip portion 255.

The second adjustment plate 250 is formed with an arc-shaped adjustment groove 256 centered on the axis of the cam drive shaft 42. An adjustment bolt 261 is inserted through the adjustment groove 256. The adjustment bolt 261 is screwed into the nut member 254 through the bolt insertion hole 253. The second adjustment plate 250 is provided with a second grip 257.
By loosening the adjustment bolt 186 and rotating the first adjustment plate 249 around the axis of the cam drive shaft 42, the third cylinder 246 rotates and the engagement plate 244 rotates. When the engagement plate 244 rotates, the second cam plate 233 rotates relative to the first cam plate 232, and the length 241 of the pushing portion 231 is adjusted. Accordingly, the opening time of the opening / closing lid 219, that is, the timing of irrigation can be easily adjusted.

Further, the cam adjustment mechanism 212 can adjust the relative rotation of the first cam plate 232 and the second cam plate 233 from the outside of the irrigation tank 193.
In addition, the second adjustment plate 250 is formed with a plurality of marks 260 made of dents. Thereby, stepwise adjustment of the opening time of the opening / closing lid 219 can be easily performed.
Since the irrigation tank 193 can supply water from the water supply tank 9 provided separately from the transplanter 1 into the irrigation tank 193, the continuous operation time of the irrigation apparatus 18 can be increased. Further, by mounting the water supply tank 9 on the carriage 2, it is not necessary to provide the transplanter 1 with a large irrigation tank 193, and it is possible to prevent an increase in weight and poor weight balance due to the provision of the large irrigation tank 193 in the transplanter 1. be able to.

  After the operation of the fertilizer supply device 121, that is, after the shutter 135 is opened, the water supply device 194 supplies the water in the irrigation tank 193 to the planting part of the seedling 5 by changing the open / close lid 219 from the closed state. Therefore, when performing fertilization and irrigation, it can prevent that a fertilizer mixes with irrigation and it retains in the planting part of the seedling 5, and can prevent the fertilizer burn of the seedling 5. In this embodiment, irrigation is performed after fertilization by the fertilizer supply device 121. However, the present invention is not limited to this. Fertilization may be performed after irrigation, or fertilization and irrigation may be performed simultaneously.

In addition, the irrigation pipe 209 is arranged so that the water discharged from the irrigation device 18 hits the back surface of the earth discharging plate 68. By applying water to the back surface of the soil discharge plate 68, the soil adhering to the soil discharge plate 68 can be washed away.
Further, by opening and closing the lid 219 by pushing the cam engaging portion 230 by the pushing portion 231 of the cam 229, thereby allowing the water in the irrigation tank 193 to be discharged from the drain port portion 216, A large amount of water can be discharged in a short time.

The transplanter described above has a fertilizer application device 17 that supplies fertilizer to the vicinity of the planted seedling 5 and an irrigation device 18 that irrigates the planted seedling 5. Therefore, planting work, fertilization work, and irrigation work can be carried out with one machine. In other words, planting work, fertilizing work, and irrigation work can be performed simultaneously. For example, after planting work and fertilization work are performed with one machine, it is not necessary to perform irrigation work with another machine, and planting, fertilization, and irrigation can be easily performed.

  In addition, the engine 258 and the fuel tank 25 are mounted on the front part of the machine body 12, and the seedling supply device 15, the planting tool 55 and the irrigation tank 193 are mounted on the rear part of the machine body 12, thereby improving the weight balance. it can. Furthermore, the planting tool 55 is provided below the front part of the seedling supply device 15, and the irrigation tank 193 is disposed behind the planting tool 55 and below the rear part of the seedling supply device 15, thereby arranging these in a compact manner. be able to.

An irrigation tank 193 is provided below the seedling supply device 15. Therefore, the whole transplanter 1 can be made compact.
In addition, a fertilizer tank 112 is provided above the rear axle 48 that supports the rear wheel 45 to put the fertilizer. Therefore, the balance of the transplanter 1 at the time of traveling etc. can be maintained even in a situation where the fertilizer enters the fertilizer tank 112.

Further, since the fertilization tank 112 is provided in front of the seedling supply device 15, the fertilizer tank 112 can be provided using the space in front of the seedling supply device 15.
Further, by arranging the seedling stage 16 above the fertilizer tank 112 and supporting the seedling stage 16 so as to be retractable forward or upward from the upper position of the fertilizer tank 112, the seedling stage 16 can be compactly arranged, Fertilizer supply to the fertilizer tank 112, maintenance of the fertilizer tank 112, etc. can be performed satisfactorily. Furthermore, the fertilizer tank 112 can be enlarged.

As mentioned above, although this invention was demonstrated, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
For example, the irrigation device has a reciprocating piston pump having a piston that is pushed and pulled in conjunction with the vertical movement of the planting tool, and is a device that supplies water from the irrigation tank to the seedling by this reciprocating piston pump. May be.

DESCRIPTION OF SYMBOLS 12 Airframe 13 Traveling device 17 Fertilizing device 55 Planting tool 112 Fertilizer tank 124 Feeding device 125 Fertilizer discharge part 126 Guide pipe 134 Discharge cylinder 137 Discharge port 161 Adjustment member 162 1st adjustment member 163 2nd adjustment member

Claims (4)

The aircraft,
A traveling device provided in the airframe;
A planting tool that is supported by the machine body so as to move up and down, enters a farm field, forms a planting hole, and plants a seedling in the planting hole;
A fertilizer applying device for supplying fertilizer to the vicinity of the planted seedling provided in the aircraft;
An adjusting member for adjusting the discharge position of the fertilizer;
Transplanter equipped with. The fertilizer application
A fertilizer tank for storing fertilizer;
A feeding device for feeding out the fertilizer in the fertilizer tank;
A fertilizer discharger located in the vicinity of the planting tool;
A guide pipe for guiding the fertilizer fed from the feeding device to the fertilizer discharging section;
The transplanter according to claim 1, wherein the adjustment member adjusts a discharge position of the fertilizer discharged from the fertilizer discharge unit. The fertilizer discharge part has a discharge port facing downward,
The adjustment member includes a first adjustment member disposed outside the body of the discharge port, and a second adjustment member disposed outside the body of the discharge port,
The transplanter according to claim 2, wherein the first adjustment member and the second adjustment member are supported by the fertilizer discharge portion so as to be swingable about a front-rear axis. The fertilizer discharge part has a discharge cylinder having the discharge port at the lower end,
The first adjustment member and the second adjustment member are attached to a discharge cylinder,
The transplanter according to claim 3, wherein the discharge cylinder is adjustable around the front-rear axis.

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