JP6546009B2 - Transplant machine - Google Patents

Description

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

DESCRIPTION OF RELATED ART Conventionally, the disclosed technique of patent document 1 and patent document 2 is known as a transplant machine.
The transplanting machine disclosed in Patent Document 1 includes an airframe, a traveling device, a planter which is supported by the airframe so as to move up and down and descends and rushes into a field to plant seedlings, and a watering device for watering.
The transplanting machine disclosed by patent document 2 has the fertilization apparatus which supplies a fertilizer other than a fuselage, a traveling apparatus, and a planting tool.

JP 2000-139120 A Japanese Utility Model Application Publication No. 5-76218

In the transplantation machine of Patent Document 1, no fertilization device is provided. Moreover, in the transplant machine of patent document 2, the irrigation apparatus is not provided. Therefore, in the transplanting machine in Patent Document 1 and Patent Document 2, it is impossible to carry out the planting operation, the fertilizing operation and the watering operation with one machine.
Then, an object of the present invention is to provide a transplanting machine which can carry out planting work, fertilization work and irrigation work with one machine in view of the above-mentioned problems.

The technical measures taken by the present invention to solve the above technical problems are characterized by the following points.
An implanter according to an aspect of the present invention is supported by an airframe, a traveling device provided to the airframe, and the airframe so as to be vertically movable, and descends and rushes into a field to form a planting hole. A planting tool for planting a seedling in a hole, a fertilizer application device provided on the machine body for supplying fertilizer to the vicinity of the planted seedling, an irrigation system provided for the machine body for watering a planted part of the seedling, the planting And a seedling supply device for supplying a seedling to the planter when the attachment is raised, the planting member is provided below the front of the seedling supply device, and the irrigation device is stored. From the rear of the planting tool and below the seedling feeder, vertically overlapping with the seedling feeder and from the rear end of the seedling feeder It includes irrigation tank which is disposed a position forward of the interior of the irrigation tank A closing cover which swings to open and close the drainage port portion, the lid and the lid operating mechanism for swinging is provided with, said the front of the irrigation tank and one end side is to the drainage port portion A watering pipe is inserted into the watering tank and extends forward from the watering tank to the side of the planting tool, and the other end of the watering pipe is separated from the planting tool It is directed to the planting tool side and supplies water from the side to the planting part of the seedlings.

Further, the irrigation pipe is provided on the left side and the right side of the planting tool, and the irrigation device is provided with a cam drive shaft penetrating the irrigation tank in the width direction of the body behind the irrigation pipes on the right and left. The lid operating mechanism is provided for an opening / closing lid for opening and closing the outlet of the right irrigation pipe and an opening / closing lid for opening and closing the outlet of the left irrigation pipe, and integrated with the opening / closing lid It has a cam engaging portion that swings, and a cam that rotates integrally with the cam drive shaft and pushes the cam engaging portion to open the open / close lid.
Moreover, the irrigation device may have a control mechanism for adjusting the opening time of the cover by adjusting the pre Kifuta actuating mechanism, the adjusting mechanism is provided outside of the watering tank.

In addition, a motor mounted on the front of the vehicle and a steering handle provided on the rear of the vehicle are provided, and the planting tool, the seedling feeder and the irrigation tank are provided on the rear of the vehicle. It is provided.
Further, the fertilizing device has a fertilizer tank for storing fertilizer, and a fertilizer supply device for supplying the fertilizer in the fertilizer tank near the planting part of the seedlings, and the traveling device includes the right side and the left side of the vehicle. The fertilizer tank is provided above a rear axle supporting the rear wheel.

Further, the seedling supply device is a turntable that can rotate around the vertical axis, and a large number of seedling supply tools that are arranged in the circumferential direction on the outer peripheral side of the turntable and that rotates integrally with the turntable. And the irrigation tank is formed from one side to the other side in the machine body width direction of the turntable, and the left side of the planting implement is provided. The right side and the right side are provided with the irrigation pipe, and the left irrigation pipe is a left part of the irrigation tank and extends forward from the left side of the planting implement, and the right irrigation pipe is The right side of the irrigation tank extends forward from the right side of the planting implement .
In addition, the seedling loading stand for placing the seedling supplied to the seedling supply device is provided, and the fertilization device supplies a fertilizer tank for storing the fertilizer and the fertilizer in the fertilizer tank to the vicinity of the planting part of the seedling And a fertilizer supply device, wherein the seedling platform is disposed above the fertilizer tank and supported to be forwardly or upwardly retractable from an upper position of the fertilizer tank.

In addition, the soil is disposed in front of the planting tool and supported by the machine body so as to be vertically movable, and is vertically moved in conjunction with the planting tool to form a large hole larger than the planting hole. A plate is provided, and water discharged from the irrigation device is applied to the back of the drainage plate.
In addition, an elastic plate member is provided on the upper side of the earth removal board so as to project upward from the earth removal board.

Moreover, the resin member affixed on the front surface of the said earth removal board is provided.

According to the present invention, the following effects are achieved.
The transplanter has a planting tool for planting seedlings in a field, a fertilizing device for supplying fertilizer in the vicinity of the planted seedlings, and a watering device for watering the planted part of the seedlings. Therefore, the planting operation, the fertilizing operation and the irrigation operation can be performed by one machine. For example, after carrying out the planting work and the fertilizing work with one machine, it is not necessary to carry out the watering work with another machine, and it is possible to easily carry out planting, fertilization and watering.

Also, the fertilizer in the fertilizer tank can be supplied to the planting part of the seedling, and the water in the irrigation tank can be supplied to the planting part of the seedling.
It is possible to supply the seedlings to the planting tool from the seedling supply device provided at the rear of the airframe and to plant the seedlings on the rear side of the airframe and quickly supply the water of the irrigation tank to the seedlings after planting. Can.

Further, by providing the irrigation tank below the seedling supply device, the whole transplanter can be made compact.
Further, by providing a fertilizer tank for loading fertilizer above the rear axle supporting the rear wheel, it is possible to maintain the balance of the transplanting machine at the time of traveling, etc. even when the fertilizer tank is loaded with fertilizer.

Moreover, since the fertilization tank is provided ahead of a seedling supply apparatus, a fertilizer tank can be provided using the space ahead of the said seedling supply apparatus.
In addition, by arranging the seedling platform above the fertilizer tank and supporting it forwardly or upwardly from the upper position of the fertilizer tank, it is possible to satisfactorily supply the fertilizer to the fertilizer tank, maintain the fertilizer tank, etc. Can. In addition, the fertilizer tank can be made larger.

In addition, the soil attached to the drainage board is applied by applying the water discharged from the irrigation system to the back of the drainage board that moves up and down in conjunction with the planting tool to form a large hole that is larger than the planting hole. It can be washed away.
Moreover, when a large hole is formed by the earth removal board by having an elastic plate material provided to project upward from the earth removal board, the soil removed by the earth removal board passes over the earth removal board and becomes a large hole. It can be prevented from moving. Furthermore, since it is an elastic plate, damage can be prevented even if it contacts surrounding members and the like.

  In addition, by adhering the resin member to the front surface of the earth removal board, the adhesion of soil to the earth removal board can be reduced.

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 showing power transmission. It is the side view which showed arrangement | positioning of a planting apparatus, a seedling supply apparatus, a fertilization apparatus, and an irrigation apparatus. It is a side view of a planting device. It is a side view of a drainage board and a drainage board support mechanism. It is a side view of a seedling supply apparatus. It is a top view of a seedling supply apparatus. It is a side view of the seedling stand and the member which supports a seedling stand. It is a rear view of a seedling loading stand and a support part. It is the elements on larger scale of the support part of a seedling loading stand. It is a side view of a lock mechanism. It is a side view which shows the state which a seedling loading stand is located in a 1st position. It is a side view which shows the state which a seedling loading stand is located in a 2nd position. It is a rear view of a fertilization apparatus. It is a perspective view of a delivery roll. It is explanatory drawing of a delivery. 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 fertilizer discharge part. It is a side view of an arm operating mechanism. It is a top view of a pulling lever. It is a plane sectional view of a cam roller. It is a side view of the left side of the irrigation device. It is a plane sectional view of an irrigation device. It is a back sectional view of an irrigation device. It is a side view of the right side of the irrigation device. It is side sectional drawing of the left side of an irrigation apparatus. FIG. 29 is a view on arrow C in FIG. 28. FIG. 29 is a view on arrow D in 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 / closing lid. It is a side view of a transplant device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 35 shows an implanting device 3 provided with the implanting device 1 and a carriage 2 accompanying the implanting device 1. The transplanting machine 1 is a walking type transplanting machine for planting the seedlings 5 in the field. Specifically, the transplanter 1 is referred to as cell molded seedlings of tobacco, vegetables, etc., soil block seedlings, pot seedlings, etc. while moving along the ridge 4 across the ridge 4 formed in the field. It is a transplanter which transplants the seedlings 5 at predetermined intervals.

  The carriage 2 has a loading platform 6, a traveling device 7 for supporting the loading platform 6 so as to be able to travel, and a motor such as an engine 8 mounted on the loading platform 6. The traveling device 7 is a crawler-type traveling device 7 and is driven by the engine 8. A water supply tank 9 and a water supply pump 10 are mounted on the loading platform 6. At the rear of the carrier 6, a multi-film laying device 11 for laying a multi-film is provided.

FIG. 1 shows a side view of the implanter 1 and FIG. 2 shows a plan view of the implanter 1. In the embodiment, the arrow A1 direction in FIGS. 1 and 2 is described as the front, the arrow A2 direction in FIGS. 1 and 2 as the rear, the arrow B1 direction in FIG. 2 as the left, and the arrow B2 direction in FIG. .
Moreover, as shown in FIG. 2, the horizontal direction which is a direction orthogonal to the front and back of the transplant machine 1 is demonstrated as a body width direction. The direction from the center to the right or the left of the transplant machine 1 will be described as the direction outside the aircraft. In other words, the extracorporeal direction is the direction of the width of the vehicle and the direction away from the implanter 1. The direction opposite to the direction outside the aircraft will be described as the direction inside the aircraft. In other words, the inside of the vehicle is the direction of the width of the vehicle and the direction approaching the implanter 1.

As shown in FIG. 1 and FIG. 2, the transplanter 1 includes an airframe 12, a traveling device 13, a planting device 14, a seedling supply device 15, a seedling platform 16, a fertilizing device 17, and a watering device 18. And have.
As shown in FIG. 3, the airframe 12 has a transmission 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 of the mission case 19. The gantry 20 is
It projects forward from the mission case 19. The main frame 21 is attached to the rear of the mission case 19. The main frame 21 protrudes rearward from the mission case 19. The main frame 21 has a first frame 22 attached to the rear of the transmission case 19 and a second frame 23 attached to the front and rear midway portion of the first frame 22. A steering handle 24 is attached to the rear of the second frame 23. The steering handle 24 extends rearward.

  As shown in FIG. 1, an engine 258 which is one of the prime movers and a fuel tank 25 are mounted on the gantry 20, that is, at the front 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 transmission case 19 is output from the transmission case 19 via a clutch, a transmission mechanism, and the like. The driving device 13, the planting device 14, the seedling supply device 15, the fertilizing device 17, and the irrigation device 18 are driven by the power output from the transmission case 19.

  FIG. 4 shows a transmission case 19 and a power transmission system of a working system for transmitting power from the transmission case 19 to the planting device 14, the seedling supply device 15, the fertilizing device 17, and the irrigation device 18. The transmission 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 working system. The first output shaft 26 projects from the lower portion on the right and left sides of the transmission case 19 in the vehicle width direction. The second output shaft 27 projects leftward from the rear of the transmission 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 integrally rotatably mounted on the first drive shaft 29. The second drive shaft 32 is a drive shaft that drives the fertilization device 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 feeder 15. The fifth sprocket 35 is integrally rotatably attached to the third drive shaft 34. The fourth drive shaft 36 is a drive shaft that drives the irrigation device 18. The sixth sprocket 37 is integrally rotatably attached to the fourth drive shaft 36.

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. Thus, 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 mounted integrally rotatably on the cam drive shaft 42. Since the tension sprocket 41 applies tension to the second chain 39, the second drive shaft 32 of the fertilizing device 17 and the second of the seedling supply device 15 are interlocked with the first drive shaft 29 of the planting device 14. The third drive shaft 34, the fourth drive shaft 36 of the irrigation device 18, and the cam drive shaft 42 are driven. That is, in conjunction with the planting device 14, the fertilization 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 when the first drive shaft 29 makes one rotation, the second to fourth drive shafts 32, 34, 36 and the cam drive shaft 42 make one revolution.

As shown to FIG. 2, FIG. 3, the traveling apparatus 13 is an apparatus which supports the vehicle body 12 so that driving | running | working is possible. 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. The front wheel 44 and the rear wheel 45 are tire wheels that respectively roll on the groove 4 and are adjustable in position in the vehicle width direction with respect to the vehicle body 12. The front wheels 44 are idle wheels.
The inboard side of the axle case 46 is rotatably connected to the right and left sides of the transmission case 19 about a horizontal axis (an axis in the width direction of the machine). The upper part of the transmission case 47 is connected to the vehicle body side of each axle case 46. A rear axle 48 is provided below the transmission case 47. A rear wheel 45 is integrally rotatably supported on each rear axle 48. 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 about the axial center, and the rear wheel 45 rotates.

  The right front wheel 44 is rotatably supported on the lower portion of the right front wheel support arm 49 via a front axle 50. The left front wheel 44 is rotatably supported by the lower portion of the left front wheel support arm 49 via a front axle 50. A rectangular tube portion 51 is provided at the upper portion of each front wheel support arm 49. Each rectangular tube portion 51 is rotatably supported by the arm support shaft 52 about the horizontal axis. The arm support shaft 52 is rotatably attached to the front of the gantry 20 about the horizontal axis.

  The 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 rotatably connected to the axle case 46. The axle case 46 and the arm support shaft 52 are interlocked by the interlocking link 54. When the axle case 46 rotates, the arm support shaft 52 rotates, and the transmission case 47 and the front wheel support arm 49 both swing up and down. As a result, the right and left front wheels 44 and the right and left rear wheels 45 are simultaneously moved up and down so that the machine body 12 can be moved up and down.

As shown in FIGS. 1 and 5, the planting device 14 is provided at the rear of the machine body 12.
As shown in FIG. 6, the planting device 14 has a planting tool 55 for planting the seedlings 5 and a planting tool support device 56 for supporting the planting tool 55 so as to be able to move up and down.
The planting tool 55 rushes into the field at the time of lowering to form a planting hole 66 (see FIG. 1 and FIG. 16), and at the same time planting the seedlings 5 in the planting hole 66. The planting tool 55 is open at the top and can hold the seedlings 5 fed from above. Specifically, the planting tool 55 has an openable and closable opener 57 (a beak type opener).

The planting tool supporting 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 end sides of the first link 58 and the second link 59 are pivotally supported by a support plate 63 fixed to the main frame 21. Lower end sides of the first link 58 and the second link 59 are pivotally supported by the swing plate 60. The front end sides of the third link 61 and the fourth link 62 are pivotally supported by the swing plate 60. 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 at an intermediate portion of the third link 61. One end of a rotating arm 65 is pivotally supported by the link shaft 64. The other end side of the rotating arm 65 is fixed to the first drive shaft 29. Therefore, as 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 forward and backward. Moves up and down a long, substantially elliptical locus. And by one rotation of the 1st drive shaft 29, the planting tool 55 moves up and down, and makes 1 reciprocation up and down.

  The planting tool 55 is in the state where the opening device 57 is closed at the top dead center of the movement range, and the seedlings 5 are dropped and supplied from the seedling feeder 15. When the planting tool 55 descends and enters the field, the opener 57 opens. When the opening device 57 is opened, a planting hole 66 (see FIG. 1 and FIG. 16) is formed in the field and the seedlings 5 are discharged to the planting hole 66. After releasing the seedlings 5, the planting implement 55 moves rearward and upward while closing the opening device 57. The back and forth movement of the planting tool 55 in the substantially elliptical path is canceled because the airframe 12 is moving forward. Therefore, the planting tool 55 rushes in a posture close to perpendicular to the weir 4 and comes out in a posture close to substantially vertical, and plants the seedlings 5 in a substantially upright posture.

  As shown in FIG. 6, an earth removing plate 68 is provided at the lower front of the planting tool 55 to form a large hole 67 (see FIGS. 1 and 16) larger in the front and rear direction of the planting hole 66 and in the machine width direction. There is. The earth removing plate 68 is formed of sheet metal. As shown in FIG. 7, an elastic plate 69 protruding upward from the earth removing plate 68 is attached to the front upper portion of the earth removing plate 68. In addition, a resin member 70 is attached to the front side of the earth removing plate 68.

As shown in FIG. 7, the earth unloading plate 68 is supported by the earth unloading plate support mechanism 71. The earth discharge plate support mechanism 71 has a support rod 72, a biasing 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 transmission case 19. A drainage plate 68 is attached to the rear end side of the support bar 72. Further, the support rod 72 moves up and down in conjunction with the planting tool 55. Further, the support rod 72 is bent upward so as to approach the first drive shaft 29, and a pressure plate 76, a bar 77, and a guide pin 78 are fixed to this middle part.

  The biasing member 73 is formed by a tension coil spring. The lower end of the biasing member 73 is hooked to the bar 77. The upper end of the biasing member 73 is connected to an adjustment rod 79 provided on the main frame 21. The biasing member 73 biases the front and rear mid portions of the support rod 72 upward. In addition, by adjusting the position of the adjustment rod 79 vertically, it is possible to adjust the biasing force for pulling up the support rod 72.

  The actuating member 74 is moved downward by the rotation of the first drive shaft 29 to lower the support rod 72. The base of the swing arm 80 is pivotally supported by the link shaft 64, and the actuating member 74 is pivotally supported by the tip of the swing arm 80 via the swing shaft 81. The actuating member 74 is made of a four-leg plate material, and a cylindrical boss member 82 is fixed, and 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 located at the front upper portion, and a roller 85 capable of coming into contact with the backing plate 76 via the shaft 84 is provided on the leg located at the front lower portion. The downward movement of the roller 85 pushes down the front and rear midway portion of the support rod 72. Further, an elongated hole 86 fitted to the guide pin 78 is formed in a leg portion located at the rear lower portion, and a stopper portion 87 is formed at the leg portion located at the rear upper portion.
The restricting portion 83 abuts on the base of the swing arm 80 and restricts the upward swing of the actuating member 74 when the actuating member 74 pivots about the swing shaft 81.

  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 long hole 86, an upward biasing force is applied to the actuating member 74, thereby swinging the restricting portion 83. It is biased to abut the base of the movable arm 80 and allows the guide pin 78 to move down the slot 86. The stopper portion 87 abuts on the base of the swing arm 80 to restrict the actuating member 74 from pivoting around the swing shaft 81 in a counterclockwise direction by a predetermined angle or more.

  When the restricting portion 83 restricts upward rotation by the biasing force from the support rod 72 and abuts on the base of the swing arm 80, the actuating member 74 is integrated with the swing arm 80 to form the first drive shaft 29. Rotate the roar. As a result, the actuating member 74 moves downward with the downward rotation of the link shaft 64, and the roller 85 abuts on the contact plate 76 of the support rod 72, thereby lowering the support rod 72. When the support bar 72 is lowered, the earth removing plate 68 is pushed into the bar 4 to form a large hole 67 which is larger than the planting hole in the longitudinal direction and in the width direction of the machine. When the large hole 67 is formed, the elastic plate 69 prevents the soil removed by the earth removing plate 68 from moving over the earth removing plate 68 and moving to the large hole 67 side. In addition, the resin plate prevents soil from adhering to the front surface of the earth removing plate 68. The planting tool 55 forms a planting hole 66 at substantially the front and rear center of the large hole 67.

As shown in FIG. 1 and FIG. 8, the seedling feeder 15 is provided at the rear of the machine body 12 and at the upper rear of the planting tool 55. That is, the planting implement 55 is provided below the front part of the seedling feeder 15.
As shown in FIGS. 8 and 9, the seedling supply device 15 is a device for supplying the seedlings 5 to the planting attachment 55 when the planting attachment 55 is lifted, and includes a turntable 88, a seedling supply attachment 89, A supply drive mechanism 90 and a setting member 91 are provided.

The turntable 88 is rotatably supported by the longitudinal axis 92.
A large number of seedling supply tools 89 are arranged in the circumferential direction on the outer peripheral side of the turn table 88, and integrally rotate with the turn table 88. The seedling supply tool 89 can load the seedling 5 from above, can store the seedling 5 and can drop it. Specifically, the seedling supply tool 89 has 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 able to open and close via a hinge. In a state in which the bottom lid 94 is closed, the seedlings 5 are held in the cup 93.

The supply drive mechanism 90 includes a third drive shaft 34 and a longitudinal axis 92 for supporting the turntable 88.
And transmission means 95 for transmitting power from the third drive shaft 34 to the longitudinal axis 92. 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 the opening and closing of the bottom cover 94. The setting member 91 is provided below the turntable 88, and is a proximity portion disposed close to the lower surface of the bottom lid 94 of the seedling supply tool 89 and a separation portion disposed at a position away from the lower surface of the bottom lid 94. And contains. The separated portion of the setting member 91 is a seedling supply position 98. The proximity portion supports and closes the bottom lid 94. Since the separated portion is separated from the lower surface of the bottom lid 94, the closure of the bottom lid 94 is released, and the seedlings 5 are 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 part), the bottom cover 94 rides on the setting member 91 and the bottom cover 94 is closed.

  As shown in FIG. 1, the seedling loading stand 16 is disposed in front of and above the seedling supply device 15. Further, the seedling loading stand 16 is formed to have a width ranging from the traveling device 13 on the right side to the traveling device 13 on the left side. The seedling platform 16 is a platform on which the seedlings 5 supplied to the seedling feeder 15 are placed. The seedlings 5 are grown in a state of being placed in a cell tray (growing tray), and the cell trays are placed on the seedling platform 16 together with the seedlings 5 on the seedling platform 16 being supplied to the seedling feeder 15.

  As shown in FIGS. 10 to 12, the seedling platform 16 is supported by a support 99 attached to the machine body 12 via a fixed frame 100 and a movable frame 101. The support 99 has a front leg 102 supported by the connecting frame 53, a rear leg 103 supported by the main frame 21, and a connecting portion 104 connecting the front leg 102 and the upper end of the rear leg 103. .

  The fixed frame 100 is attached to the connecting portion 104 of the support 99. The fixed frame 100 is formed with a first guide groove 105 and a second guide groove 106. The first guide groove 105 is inclined such that it extends in the front-rear direction and moves downward as it goes forward. The second guide groove 106 extends in the longitudinal direction and is inclined to move upward as it goes forward. At the front end of the second guide groove 106, a locking groove 107 is formed.

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 platform 16. The seedling loading stand 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 using the seedling platform 16), and a worker accompanying the transplanting machine 1 takes the seedlings 5 on the seedling platform 16 from the seedlings 5 This position is to supply the seedling supply device 15. When the seedling loading stand 16 is 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 at the rear end of the second guide groove 106. It is located, and the seedling loading stand 16 is inclined backward and downward. Further, at the first position 110, the rear portion of the seedling platform 16 is located close to the upper position of the fertilizer tank 112. By this, the seedling loading stand 16 and the fertilizer tank 112 (fertilization apparatus 17) can be arrange | positioned compactly.

  The second position 111 is a position (retracting position) for retracting the seedling platform 16 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 loading stand 16 moves forward And move to the second position 111. Therefore, in the present embodiment, at the second position 111, the rear portion of the seedling platform 16 is retracted forward from the position above the fertilizer tank 112. As a result, even if the seedling platform 16 and the fertilizer tank 112 are disposed close to each other (in a compact arrangement), the supply of fertilizer to the fertilizer tank 112 and the maintenance of the fertilizer tank 112 can be facilitated. Further, in a state where the seedling loading stand 16 is positioned at the second position 111, the second guide roller 109 is fitted in the locking groove 107, whereby the backward movement of the seedling loading stand 16 is restricted. Further, at the second position 111, the seedling platform 16 is in a substantially horizontal state.

The seedling platform 16 may be retracted upward or forward from the upper position of the fertilizer tank 112.
At the rear of the fixed frame 100, a lock mechanism 113 for fixing the seedling platform 16 at the first position 110 is provided. As shown in FIG. 13, the lock mechanism 113 has a lock lever 114 and a biasing member 115. A boss 116 is provided in the middle of the lock lever 114. The boss portion 116 is pivotally supported at 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 engaged with the second guide roller 109. The rear portion of the lock lever 114 is a grip portion 118 for operating the lock lever 114. The biasing member 115 is composed of a tension coil spring. One end of the coil spring is hooked to a first spring hooking member 119 fixed to the boss portion 116. The other end of the coil spring is hooked to a second spring hooking member 120 fixed to the fixed frame 100. The biasing force of the coil spring acts on the second guide roller 109 positioned at the rear end position of the second guide groove 106 in the direction in which the hook portion 117 engages. As the hook portion 117 engages with the second guide roller 109, the seedling loading stand 16 is held at the first position 110. By depressing the grip portion 118 of the lock lever 114, the hook portion 117 pivots upward around the lever shaft 119 and is disengaged from the second guide roller 109.

As shown in FIG. 1, the fertilizer application device 17 is provided at the rear of the airframe 12. As shown in FIG. 16, the fertilizer application device 17 has a fertilizer tank 112 for storing fertilizer, and a fertilizer supply device 121 for supplying the fertilizer in the fertilizer tank 112 near the planting part of the seedlings 5.
As shown in FIG. 1, the fertilizer tank 112 is provided in a pair, and is provided on the right side and the left side of the machine body 12. The fertilizer tank 112 is disposed in front of the seedling feeder 15 and below the rear of the seedling platform 16 and is attached to the machine body 12. The fertilizer tank 112 is formed with an inlet for feeding the fertilizer. The inlet is closed open / close by a lid 122. At the lower end of the fertilizer tank 112, an annular edge is formed to form a discharge port 123 for discharging the fertilizer. The inlet is closed open / close by a lid 122.

As shown to FIG. 16, 17, the fertilizer supply apparatus 121 is attached to the body 12 with the fertilizer tank 112. As shown in FIG. The fertilizer supply device 121 includes a delivery device 124, a fertilizer discharge unit 125, a guide pipe 126, and an arm operating mechanism 127. The delivery device 124, the fertilizer discharger 125, and the guide pipe 126 have a pair corresponding to the fertilizer tank 112.
The delivery device 124 is a device for delivering the fertilizer in the fertilizer tank 112. The fertilizer discharge part 125 is a part which discharges a fertilizer to the vicinity of the planted seedlings 5. The guide tube 126 is a member for guiding the fertilizer delivered from the delivery device 124 to the fertilizer discharge unit 125, and is made of a flexible tube. The arm operating mechanism 127 is a mechanism for operating an open / close arm 128 described later.

  The delivery device 124 is provided below the fertilizer tank 112 and includes a case 264, a delivery roll 129, and a discharge duct 130. At the upper end of the case 264, an annular edge (receiving part) forming the receiving port 263 is formed. The receiving port 263 is in communication 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 delivery roll 129. At the lower part of the case 264, on the side opposite to the receiving port 263, an annular edge is formed which forms a discharge port 265 for discharging the fertilizer from the case 264.

The delivery roll 129 is housed in a case 264. The second drive shaft 32 passes through the left and right cases 264 and the delivery roll 129 in the case 264. The delivery roll 129 is rotatable 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 delivery roll 129 includes a delivery unit 132 and a non-delivery unit 133. The delivery unit 132 has a plurality of grooves 131 formed by recessing the surface of a cylindrical roll in a radially inward direction. In this embodiment, the plurality of grooves 131 are provided at predetermined intervals in the circumferential direction of the delivery roll 129. Moreover, the non-delivery part 133 is the site | part comprised by flat-izing a cylindrical roll without denting. The delivery roll 129 is rotatably supported by the case 264, and the delivery portion 132 (the plurality of grooves 131) and the non-delivery portion 133 rotate in the case 264 with the rotation of the delivery roll 129.

  Under the condition where the delivery roll 129 is rotating, when the groove 131 reaches near 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 outlet 265 of the case 264 with the fertilizer contained therein, the fertilizer in the groove 131 is discharged from the groove 131 to the outlet 265. Then, the fertilizer at the discharge port 265 falls from the lower side of the case 264 to the discharge duct 130. On the other hand, when the non-delivery portion 133 passes near the receiving portion under the condition that the delivery roll 129 is rotating, the fertilizer that has entered the receiving port 263 remains and the lower portion of the case 264, that is, the outlet 265 Do not move towards That is, when the non-delivery part 133 passes near the receiving part, the fertilizer is not delivered 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 out by the delivery roll 129 by dropping it downward. Further, the upper end portion of the guide pipe 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 weir 4. One fertilizer discharge part 125 is disposed on the right side of the planting tool 55, and the other fertilizer discharge part 125 is disposed on the left side of the planting tool 55.

18 to 20 show the fertilizer discharger 125 on the left side. The fertilizer discharger 125 on the right side is symmetrical, so the illustration is omitted.
The fertilizer discharger 125 includes a discharge cylinder 134, a shutter 135, an open / close arm 128, and a biasing spring 136.
The discharge cylinder 134 is formed of a square cylindrical member whose both ends in the axial direction are open. The discharge cylinder 134 is disposed in an inclined manner to shift toward the inside of the machine as the axis goes downward. The lower end portion of the guide pipe 126 is connected to the upper end portion of the discharge cylinder 134. Therefore, the fertilizer in the fertilizer tank 112 delivered from the delivery device 124 is guided to the upper end 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 the fertilizer.

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

  The first bolt 141 is located above the second bolt 142. The first bolt 141 and the second bolt 142 both have an axial center 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 holes 145 are arc holes through which the second bolts 142 are inserted. The second insertion hole 145 is a circular arc-shaped hole centered on the first insertion hole 144. Therefore, when the first bolt 141 and the second bolt 142 are loosened, the discharge cylinder 134 can swing in an arc shape (indicated by an arrow X1 in FIG. 20) about the first bolt 141 with respect to the first bracket 138. Become. By this, the direction of the discharge port 137 of the discharge cylinder 134 (the discharge position of the fertilizer) can be changed in the machine width direction.

The shutter 135 is provided in the middle of the discharge cylinder 134. A shutter shaft 146 having an axial center in the front-rear direction is disposed below the shutter 135 and on the vehicle-external side. The shutter 135 is supported by the shutter shaft 146. The shutter shaft 146 penetrates the front and rear walls 147 and 148 of the discharge cylinder 134. The front portion of the shutter shaft 146 penetrates the front wall 147 of the discharge cylinder 134 and is rotatably supported by the mounting seat 143 about the axial center. The rear portion of the shutter shaft 146 is rotatably supported by a pivoting member 149 provided on the outer surface of the rear wall 148 through the rear wall 148 of the discharge cylinder 134. The rear portion of the shutter shaft 146 passes through the pivot support member 149.

  As shown in FIG. 20, by rotating the shutter 135 about the axial center of the shutter shaft 146 (see arrow X2 in FIG. 20), the position can be changed between the closed position shown by a solid line and the open position shown by a virtual line. It is done. The closed position is a position at which the passage for passage of the fertilizer, which is the inside of 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 where the passage in the discharge cylinder 134 is opened to discharge the fertilizer accumulated in the discharge cylinder 134 (fertilizer discharge portion 125).

  As shown in FIGS. 18 and 20, a guide plate 150 for guiding the fertilizer introduced into the discharge cylinder 134 to the inside of the discharge cylinder 134 (the opening side of the shutter 135) of the shutter 135 in the closed position. Is provided. The upper portion of the guide plate 150 is fixed to the inner surface of the lower side wall 151 of the discharge cylinder 134. The lower portion of the guide plate 150 is inclined in such a manner as to move toward the inside of the vehicle (a direction away from the lower side wall 151 of the discharge cylinder 134) as it goes downward.

  The open / close arm 128 is provided on the outer back surface of the discharge cylinder 134. The rear portion of the shutter shaft 146 is fixed to a midway portion of the open / close arm 128. The lower end of a biasing spring 136, which is a tension coil spring, is retained on the inboard side of the open / close arm 128. The upper end of the biasing spring 136 is latched to a second bracket 153 fixed to the upper portion of the discharge cylinder 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 top of the outer surface of the rear wall 148 of the discharge cylinder 134. The upper end of the biasing spring 136 is latched to 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 outboard side of the open / close arm 128 via a connector 159. At the lower end of the open / close arm 128 on the vehicle body side, a stopper 160 that contacts the lower side wall 151 of the discharge cylinder 134 is provided. The stopper 160 abuts on the lower side wall 151 of the discharge cylinder 134 to restrict the rotation of the open / close arm 128 by the biasing force of the biasing spring 136.

  With the stopper 160 in contact with the lower wall 151 of the discharge cylinder 134, the shutter 135 is in the closed position. When the inner cable 158 is pulled, the open / close arm 128 rotates clockwise in FIG. 18 against the biasing force of the biasing spring 136, and the shutter 135 is changed to the open position. When the tension of the inner cable 158 is released, the biasing force of the biasing spring 136 causes the open / close arm 128 to rotate in the counterclockwise direction in FIG. 18 to return the shutter 135 to the closed position.

In the fertilizer discharge part 125 (the lower part of the discharge cylinder 134), the adjustment member 161 which adjusts the discharge position of the fertilizer discharged from the fertilizer discharge part 125 is provided. The adjusting member 161 has a first adjusting member 162 and a second adjusting member 163. The first adjusting member 162 is disposed on the inner side of the discharge port 137, and the second adjusting member 163 is an airframe of the discharge port 137. It is located outside.
As shown in FIGS. 18 to 20, the first adjustment member 162 is a first front plate portion 164 located on the front wall 147 side of the discharge cylinder 134 and a first rear located on the rear wall 148 side of the discharge cylinder 134. A plate portion 165, a first main plate portion 166 connecting the first front plate portion 164 and the first rear plate portion 165 to the inner side of the machine body, and a first mounting plate portion extending upward from the upper end of the first rear plate portion 165 And H. 167.

The second adjustment member 163 includes a second front plate portion 168 located on the front wall 147 side of the discharge cylinder 134, a second rear plate portion 169 located on the rear wall 148 side of the discharge cylinder 134, and a second front plate portion And a second mounting plate 171 extending upward from the upper end of the second rear plate 169.
The first mounting plate portion 167 is mounted so as to be pivotable (adjustable in angle) about a longitudinal axis by a first adjustment bolt 173 screwed to a nut member 172 fixed to the outer surface of the rear wall 148 of the discharge cylinder 134 There is. The second mounting plate portion 171 is attached so as to be pivotable (adjustable in angle) about a longitudinal axis by a second adjustment bolt 174 screwed to a nut member 172 fixed to the outer surface of the rear wall 148 of the discharge cylinder 134 There is.

  When the first adjustment bolt 173 is loosened, the first adjustment member 162 can swing around the first adjustment bolt 173 as shown by an arrow X3 in FIG. 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, adjustment of the discharge position of the fertilizer in the widthwise direction of the machine can be favorably performed. Further, as described above, by changing the direction of the discharge port 137 at the lower end of the discharge cylinder 134, the range of adjustment of the discharge position of the fertilizer can be enlarged, and the adjustment of the discharge position of the fertilizer is finely It can be adjusted.

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

  The cam roller 175 has a disc-like disc portion 178 and an overhang portion 179 projecting from the disc portion 178 toward the outer periphery. A circular hole 180 is formed at the center of the cam roller 175, and a boss 181 is relatively rotatably inserted through the circular hole 180. The second drive shaft 32 is integrally rotatably inserted into the boss 181. 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 adjusting disc 183 made of a disc having the same diameter as the disc portion 178 is disposed on the in-vehicle side of the cam roller 175 in an overlapping manner. The adjustment disc 183 is fixed to the boss 181. Further, a nut member 184 is fixed to the adjusting 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 adjusting disc 183 by means of an adjusting bolt 186 inserted into the long hole 182 and the bolt insertion hole 185 and screwed to the nut member 184.

  The pulling lever 176 has a first pulling lever 187 and a second pulling lever 188. The first pulling lever 187 is a lever for operating the opening and closing arm 128 of the right fertilizer discharging portion 125, and the second pulling lever 188 is a lever for operating the opening and closing arm 128 of the left fertilizer discharging portion 125. is there. The first pulling lever 187 and the second pulling lever 188 are arranged side by side in the machine width direction above the cam roller 175. One end (rear end) of the first pulling lever 187 and the second pulling lever 188 is rotatably supported by the fertilization bracket 177 via a bearing 189 so as to be rotatable about the horizontal axis. An engagement roller 190, which is a bearing roller, is provided midway between the first pulling lever 187 and the second pulling lever 188 and between the first pulling lever 187 and the second pulling lever 188. The engagement roller 190 is rotatably supported by the pin 191 on the first pulling lever 187 and the second pulling lever 188 about the horizontal axis.

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

The cam roller 175 makes one rotation corresponding to one vertical reciprocation of the planting tool 55. When the planting tool 55 rushes into the weir 4 (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, the first pulling lever 187 and the second pulling lever 188 both swing upward and pull the other end of the inner cable 158. When the inner cable 158 is pulled, the outboard side of the right and left open / close arms 128 is pulled up, and the shutter 135 is opened. At this time, the delivery portion 132 of the delivery roll 129 is directed upward, and the delivery of the fertilizer from the delivery roll 129 is stopped. When the protruding portion 179 of the cam roller 175 is disengaged from the engagement roller 190 and the pull-up force of the inner cable 158 is released, the shutter 135 is closed and the fertilizer is fed out from the delivery roll 129.

  As described above, in the transplanting machine 1 described above, it is possible to plant seedlings by the planting tool 55 and to supply fertilizer in the vicinity of the planted seedlings by the fertilizing device 17. Here, since the transplanter 1 is provided with the adjustment member 161, the discharge position of the fertilizer can be adjusted. For example, the fertilizer stored in the fertilizer tank 112 can be delivered by the delivery device 124, and the delivered fertilizer can be guided to the fertilizer discharge unit 125 via the guide pipe 126, and the discharge position of the fertilizer discharged from the fertilizer discharge unit 125 Adjustment can be performed by the adjustment member 161.

  Since the transplanter 1 is provided with the shutter 135, the fertilizer delivered from the delivery device 124 can be stored in the fertilizer discharge part 125 or the guide pipe 126 by closing the shutter 135. Then, the fertilizer accumulated in the fertilizer discharge portion 125 or the guide pipe 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 timing of fertilization can be easily set by opening and closing the shutter 135. That is, it is possible to fertilize the ground etc. in a short time and at the intended timing.

  Further, the delivery roll 129 delivers the fertilizer in the fertilizer tank 112 while the shutter 135 is closed, and the non-delivery part 133 which does not deliver the fertilizer in the fertilizer tank 112 while the shutter 135 is open. have. Therefore, while the shutter 135 is closed, the fertilizer delivered from the delivery roll 129 can be guided to the fertilizer discharge portion 125 or the guide pipe 126, and the fertilizer before fertilization is brought close to the lower part (ground) of the airframe in advance. Can be

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

As shown in FIG. 1, the irrigation device 18 is provided at the rear of the airframe 12. The irrigation device 18 has an irrigation tank 193 for storing water, and a water supply device 194 for supplying the water in the irrigation tank 193 to the planting part of the seedlings 5.
As shown in FIG. 5, the irrigation tank 193 is provided at the rear of the planting implement 55 and below the seedling feeder 15, that is, below the rear of the seedling feeder 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, an upper side wall 199, and a bottom side wall 200. Is formed. The upper surface wall 199 is detachably attached to upper ends of the front wall 195 and the rear wall 196 via bolts or the like. Mounting bolts 201 are fixed to the top of the front wall 195 and the top of the rear wall 196. The irrigation tank 193 is attached to a bracket (not shown) fixed to the airframe 12 via the attachment bolt 201. The bottom wall 200 is provided with a drain plug 202 for draining the water in the irrigation tank 193.

The 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 which penetrates the irrigation tank 193 in the vehicle width direction. The cam drive shaft 42 is rotatably supported by the right side wall 197 and the left side wall 198 via bearing devices 203 and 204 around an axial center.
A water supply port 205 and a return port 206 are provided on the upper side of the back wall 196 and on the left side. 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 in the water in the water supply tank 9 mounted on the truck 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. The carriage 2 is mounted with a water supply pump 10 for sucking up water from a water supply tank 9, and a discharge port of the water supply pump 10 and a water supply port 205 are connected by a supply hose 207. Further, one end of a return hose 208 is connected to the return port 206, and the other end of the return hose 208 is inserted into the water supply tank 9. Therefore, the water in the water supply tank 9 is circulated 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 operating mechanism 211, and a cam adjusting mechanism (adjusting mechanism) 212.
The irrigation pipe 209 is a pipe member for guiding the water in the irrigation tank 193 to the planting part of the seedlings 5. The lid device 210 is a device for opening and closing one end side of the irrigation pipe 209. The lid operating mechanism 211 is a device for operating the lid device 210. The cam adjustment mechanism 212 is a mechanism that adjusts the lid operating mechanism 211.

  As shown in FIG. 25, the irrigation pipe 209 is disposed on the front side of the irrigation tank 193. The irrigation pipes 209 are provided in a pair in the machine width direction, and are disposed on the right side of the planting tool 55 and on 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 drainage pipe 213 fixed to the lower portion of the front wall 195, a second drainage pipe 214 connected to the first drainage pipe 213, and the second drainage pipe 214. And a third drain pipe 215 connected to the second drain pipe 214. One end of the first drain pipe 213 is inserted into the irrigation tank 193. One end side of the first drainage pipe 213 is a drainage port portion 216 for draining water in the irrigation tank 193.

The second drain pipe 214 is constituted by a straight pipe, and one end thereof is inserted into the other end of the first drain pipe 213. One end of the second drainage pipe 214 is attached to the other end of the first drainage pipe 213 by a bolt 217 and a nut 218. The first drain pipe 213 and the second drain pipe 214 are inclined forward toward the outside of the machine.
The third drainage pipe 215 is an elbow pipe, and one end thereof is fitted and fixed to the other end of the second drainage pipe 214. The other end of the third drainage pipe 215 is directed toward the inside of the vehicle. The water in the irrigation tank 193 is supplied to the planted part of the seedlings 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 seedlings (roots, around the leaves) and the seedlings themselves (roots, leaves).

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

  As shown in FIG. 28, the open / close lid 219 is provided for each of the right and left irrigation pipes 209. The open / close lid 219 has a mounting plate 222, a packing 223, and a pressing plate 224. The packing 223 is superposed on the mounting plate 222 and the holding plate 224 is superposed on the packing 223. The packing 223 is attached to the mounting plate 222 by a screw 225 which penetrates the holding plate 224 and the packing 223 and is screwed to the mounting plate 222. The drainage port 216 is closed by pressing the packing 223 against the drainage port 216.

  As shown in FIG. 28, the mounting plate 222 is provided with a pivot plate 226, which is pivotally supported at the lower part of the lid bracket 220 via a pivot 259 about a transverse 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 is pivotable about the bracket shaft 227.

The biasing spring 221 is a torsion coil spring and is externally fitted to the bracket shaft 227. One end of the biasing spring 221 is latched to the lid bracket 220. The other end of the biasing spring 221 is latched to the bracket stay 228. The biasing force of the biasing spring 221 acts in the direction of pressing the open / close lid 219 against the drainage port portion 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 has a cam 229 and a cam engaging portion 230.

As shown in FIGS. 31 and 32, the cam 229 has a pressing portion 231 that opens the open / close lid 219 by pressing the cam engaging portion 230. Further, the cam 229 has a first cam plate 232 and a second cam plate 233 superimposed on the first cam plate 232. The first cam plate 232 has a disk-shaped first base 234 and a first portion 235 protruding from the first base 234 toward the outer periphery. The second cam plate 233 has a disk-shaped second base 236 and a second portion 237 protruding from the second base 236 toward the outer periphery. The pressing portion 231 is configured by the first portion 235 and the second portion 237.

The right and left first cam plates 232 are fixed to the first cylindrical body 238, respectively. The cam drive shaft 42 is fitted into each first cylindrical body 238, and a pin 239 is inserted into the first cylindrical body 238 and the cam drive shaft 42. Thus, the first cylindrical body 238 is integrally rotatably supported by the cam drive shaft 42.
The right second cam plate 233 is fixed to the right end of the second cylindrical body 240. The left second cam plate 233 is fixed to the left end of the second cylindrical body 240. The second cylindrical body 240 is provided across the first cylindrical body 238 on the right side and the first cylindrical body 238 on the left side, and is externally fitted with the first cylindrical body 238 on the right side and the first cylindrical body 238 on the left side relatively rotatably. There is. Therefore, the second cam plate 233 is rotatable relative to the first cam plate 232 about 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 pressing 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 centered on 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 holes 242 and the second pin insertion holes 243. The engagement plate 244 is fixed to the right end of the third cylindrical body 246 fitted on the left side of the cam drive shaft 42 so as to be relatively rotatable. The third cylindrical body 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 engaging portion 230 is constituted by a bearing roller. The cam engaging portion 230 is rotatably attached to an engagement bracket 247 which is an upper portion of the lid bracket 220 and extends rearward from the rear surface via a roller shaft 248. Therefore, the cam engagement portion 230 integrally pivots with the opening / closing lid 219 around the axial center of the bracket shaft 227.

As shown in FIG. 28, the portions other than the pressing portion 231 of the cam 229 are configured not to contact the cam engaging portion 230. When the cam 229 is not in contact with the cam engaging portion 230, the opening / closing lid 219 is pressed against the drainage opening 216 by the biasing spring 221, and the drainage opening 216 is closed by the opening / closing lid 219.
As shown in FIG. 34, when the pressing portion 231 of the cam 229 contacts the cam engaging portion 230 and pushes the cam engaging portion 230, the lid bracket 220 rotates around the bracket shaft 227 and the open / close lid 219 Away from the outlet 216, the outlet 216 opens. Thereby, the water in the irrigation tank 193 is drained to the planted part of the seedlings 5 via 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 has a first adjustment plate 249 and a second adjustment plate 250. The first adjustment plate 249 is integrally fitted on a portion of the third cylindrical body 246 which protrudes leftward from the irrigation tank 193 so as to be integrally rotatable. The second adjustment plate 250 is fitted on a portion of the cam drive shaft 42 projecting leftward from the third cylindrical body 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. A nut member 252 for retaining is screwed into the screw portion 251. A circular bolt insertion hole 253 is formed in the first adjustment plate 249. On the right side surface of the first adjustment plate 249, a nut member 254 whose screw hole matches the bolt insertion hole 253 is fixed. Further, 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 adjusting bolt 261 is inserted through the adjusting groove 256. The adjustment bolt 261 is screwed into the nut member 254 through the bolt insertion hole 253. In addition, a second grip portion 257 is provided on the second adjustment plate 250.
By loosening the adjustment bolt 186 and rotating the first adjustment plate 249 around the axis of the cam drive shaft 42, the third cylindrical body 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 pressing portion 231 is adjusted. By this, the opening time of the opening / closing lid 219, that is, the timing of irrigation can be easily adjusted.

Further, relative rotation adjustment of the first cam plate 232 and the second cam plate 233 can be performed from the outside of the irrigation tank 193 by the cam adjustment mechanism 212.
Further, a plurality of marks 260 formed of a recess are formed on the second adjustment plate 250. Thereby, the stepwise adjustment of the opening time of the open / close lid 219 can be easily performed.
The water in the water supply tank 9 provided separately from the transplanter 1 can be supplied to the irrigation tank 193 into the irrigation tank 193, so the continuous working time of the irrigation device 18 can be increased. Further, by mounting the water supply tank 9 on the carriage 2, it is not necessary to provide the large irrigation tank 193 in the transplanting machine 1, and weight increase and poor weight balance due to the provision of the large irrigation tank 193 in the transplanting machine 1 are prevented. be able to.

  The water supply device 194 changes the open / close lid 219 from the closed state to the open state after the operation of the fertilizer supply device 121, that is, after the shutter 135 is opened, and supplies the water in the irrigation tank 193 to the planting part of the seedlings 5. Therefore, when carrying out fertilization and irrigation, it can be prevented that fertilizer is mixed with irrigation and stagnated in the planting part of the seedlings 5, and fertilizer burning of the seedlings 5 can be prevented. In this embodiment, although irrigation is performed after fertilization by the fertilizer supply device 121, the present invention is not limited to this, and fertilization may be performed after irrigation, or fertilization and irrigation may be performed simultaneously.

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

  The above transplanter has a fertilizing device 17 for supplying fertilizer to the vicinity of the planted seedlings 5 and a watering device 18 for watering the planted seedlings 5. Therefore, the planting operation, the fertilizing operation and the irrigation operation can be performed by one machine. In other words, the planting operation, the fertilizing operation and the irrigation operation can be performed simultaneously. For example, after carrying out the planting work and the fertilizing work with one machine, it is not necessary to carry out the watering work with another machine, and it is possible to easily carry out planting, fertilization and watering.

  In addition, by mounting the engine 258 and the fuel tank 25 on the front of the fuselage 12 and mounting the seedling feeder 15, the planting tool 55 and the irrigation tank 193 on the rear of the fuselage 12, the weight balance can be improved. it can. Furthermore, the planting tool 55 is provided at the lower front of the seedling feeder 15, and the irrigation tank 193 is disposed at the rear of the planting tool 55 and below the rear of the seedling feeder 15, thereby arranging them compactly. be able to.

In addition, the irrigation tank 193 is provided below the seedling supply device 15. Therefore, the entire implanting device 1 can be made compact.
Further, a fertilizer tank 112 for containing fertilizer is provided above the rear axle 48 which supports the rear wheel 45. Therefore, even in a situation where the fertilizer tank 112 contains fertilizer, it is possible to maintain the balance of the transplanting machine 1 at the time of traveling or the like.

Moreover, since the fertilization tank 112 is provided ahead of the seedling supply apparatus 15, the fertilizer tank 112 can be provided using the space ahead of the said seedling supply apparatus 15.
Further, the seedling loading stand 16 can be disposed compactly by disposing the seedling loading stand 16 above the fertilizer tank 112 and retractably supporting it from the upper position of the fertilizer tank 112 forward or upward. Supply of fertilizer to the fertilizer tank 112, maintenance of the fertilizer tank 112, and the like can be favorably performed. Furthermore, the fertilizer tank 112 can be enlarged.

Although the present invention has been described above, it should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the above description but by claims, and is intended to include all modifications within the meaning and scope equivalent to claims.
For example, the watering apparatus has a reciprocating piston pump having a piston that is pushed and pulled in conjunction with the vertical movement of the planting tool, and this reciprocating piston pump supplies water to the seedlings to the seedlings. May be

DESCRIPTION OF SYMBOLS 5 seedling 12 airframe 13 traveling apparatus 15 seedling supply apparatus 16 seedling stand 17 fertilization apparatus 18 irrigation apparatus 44 front wheel 45 rear wheel 48 rear axle 55 planting tool 67 large hole 68 earth removal board 69 elastic board material 70 resin member 112 fertilizer tank 121 fertilizer Supply device 193 Irrigation tank 194 Water supply device 258 prime mover (engine)

Claims (10)

The aircraft,
A traveling device provided on the body;
A planting tool which is vertically movably supported by the machine body and descends to enter a field to form a planting hole and to plant seedlings in the planting hole;
A fertilizer application device provided on the airframe and supplying fertilizer in the vicinity of the planted seedlings;
A watering device provided on the airframe for watering the planting part of the seedlings;
A seedling feeder for feeding seedlings to the planting tool when the planting tool is raised;
Equipped with
The planting implement is provided below the front of the seedling feeder.
The irrigation device, which has a water outlet portion for discharging the pooled water inside, said a lower rear and the seedling supply device of the planting device overlap in the vertical direction and the seedling supply device and the Including an irrigation tank located forward of the rear end of the seedling feeder ,
Inside the irrigation tank, an opening / closing lid that swings to open / close the drainage port and a lid operating mechanism that swings the opening / closing lid are provided .
In the front of the irrigation tank, one end side is the drainage port portion, and an irrigation pipe is inserted into the irrigation tank and extends from the irrigation tank forward to the side of the planting tool. ,
The other end side of the watering pipe is separated from the planting tool and directed to the planting tool side to supply water from the side to the planting part of the seedlings . The irrigation pipe is provided on the left side and the right side of the planting tool,
The irrigation apparatus includes a cam drive shaft penetrating the irrigation tank in the width direction of the vehicle behind the right and left irrigation pipes.
The lid operating mechanism is provided for each opening and closing lid for opening and closing the outlet of the right irrigation pipe and for the opening and closing lid for opening and closing the outlet of the left irrigation pipe, and integrally swings with the opening and closing lid The transplantation machine according to claim 1, further comprising: a cam engaging portion for rotating the opening / closing lid integrally with the cam drive shaft and pressing the cam engaging portion to open the opening / closing lid. The irrigation device may have a control mechanism for adjusting the opening time of the cover by adjusting the pre Kifuta actuating mechanism,
The implanter according to claim 1 or 2, wherein the adjustment mechanism is provided outside the irrigation tank . A motor mounted on the front of the vehicle,
A steering handle provided at the rear of the vehicle;
Equipped with
The transplanter according to any one of claims 1 to 3, wherein the planter, the seedling feeder and the irrigation tank are provided at the rear of the machine body. The fertilization device includes a fertilizer tank for storing fertilizer, and a fertilizer supply device for supplying the fertilizer in the fertilizer tank in the vicinity of the planting part of the seedlings.
The traveling device has front wheels and rear wheels provided on the right and left sides of the airframe,
The transplanter according to any one of claims 1 to 4, wherein the fertilizer tank is provided above a rear axle supporting the rear wheel. The seedling feeder is
A turntable that can rotate around the vertical axis,
A large number of seedling supply tools arranged in the circumferential direction on the outer peripheral side of the turn table and integrally rotating with the turn table, having a seedling supply tool for dropping seedlings held inside and supplying them to the planting tools ,
The irrigation tank is formed from one side to the other side in the machine body width direction of the turntable ,
The irrigation pipe is provided on the left side and the right side of the planting tool,
The left irrigation pipe is the left part of the irrigation tank and extends forward from the left side of the planting tool, and the right irrigation pipe is the right part of the irrigation tank, the planting The transplantation machine according to any one of claims 1 to 5, which extends forward from the right side of the tool . It has a seedling loading stand on which the seedling supplied to the seedling supply device is placed,
The fertilization device includes a fertilizer tank for storing fertilizer, and a fertilizer supply device for supplying the fertilizer in the fertilizer tank in the vicinity of the planting part of the seedlings.
The transplanter according to any one of claims 1 to 6, wherein the seedling platform is disposed above the fertilizer tank and is retractably supported forward or upward from a position above the fertilizer tank. An earth removal board which is disposed in front of the planting tool and supported by the machine body so as to be movable up and down and which moves up and down in conjunction with the planting tool to form a large hole in front and rear of the planting hole. Equipped
The transplantation machine according to any one of claims 1 to 7, wherein water discharged from a watering apparatus is applied to the back surface of the drainage plate.   9. The implanting machine according to claim 8, further comprising an elastic plate provided at an upper portion of the earth removing plate so as to project upward from the earth removing plate.   The implanter according to claim 8 or 9, further comprising a resin member attached to the front surface of the drainage plate.

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