JP3661365B2 - Seedling transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multiple-row planting seedling transplanter capable of stopping seedling planting of an arbitrary row.
[0002]
[Prior art]
In multi-row planting seedling transplanters such as rice transplanters, the seedling mounting surface of the seedling platform is divided into the number of planting strips, and the seedlings mounted on each seedling mounting surface correspond to each seedling mounting surface. Planted in the field with the number of planting devices provided. Each seedling surface is provided with a seedling reduction switch that turns on when the remaining amount of seedlings falls below a certain level, and the amount of seedlings on the seedling mounting surface decreases during planting work. When is turned on, a warning is given by a lamp, buzzer, or the like.
[0003]
In addition, for seedling transplanters equipped with fertilizer application, fertilizer hoppers in each row are provided with a fertilizer reduction switch that turns on when the remaining amount of fertilizer falls below a certain level. When the remaining amount of fertilizer decreases and any of the fertilizer reduction switches is turned on, a warning is given by a lamp, a buzzer or the like.
[0004]
This type of multi-row seedling transplanting machine is provided with a clutch that is usually called a “畦 clutch” that is used when working at the heel. This hook clutch is provided in the transmission path to the planting device of each strip, and is individually turned on and off. When the 操作 clutch is operated to “disengage”, the seedling planting of the strip stops.
[0005]
[Problems to be solved by the invention]
When planting only some of the strips at the time of work at the shore, etc., for the strips that have been planted, it is possible to empty the seedlings on the seedling placement surface, or work with a small remaining amount. is there. The same applies to fertilizers. In such a case, conventionally, when the seedling reduction switch (or fertilizer reduction switch) of the article is turned on, a warning informing the seedling reduction (or fertilizer reduction) has been output. This is not only a nuisance and an annoyance for the operator, but even if the remaining amount of seedlings (or fertilizer) in the planting operation is low, it is not known. There was a problem that unplanted sections (or non-fertilizer sections) occurred. Moreover, the trouble which caused the planting part to descend | fall suddenly and collide a planting part with a ridge etc. generate | occur | produced during the work in a headland. An object of the present invention is to solve such problems.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is configured as follows. That is, seedling transplantation machine of the present invention, the planting unit having a seedling mounting table and planting apparatus, vertically movable mounted on the traveling vehicle traveling by driving the drive wheels via the auxiliary transmission device from the engine The seedling mounting surface of the seedling mounting base is divided into the number of planting strips, and the seedlings mounted on these seedling mounting surfaces are planted for the number of planting strips corresponding to the respective seedling mounting surfaces. A multi- row seedling transplanting machine that is planted in a field with a device, and a clutch that turns on and off the driving of the planting device in units of two adjacent lines , and is provided on both sides of the machine body so that it can stand up and fall freely A drawing marker that can be fixed to a storage position when not in use, a sub-transmission motor that shifts the sub-transmission device, a sub-transmission lever that operates the sub-transmission device, and a sub-transmission that detects the operation position of the sub-transmission lever Lever sensor and automatic deceleration adjustment lever that can adjust the deceleration speed The absolute travel speed of the airframe calculated from the detection value of the auxiliary transmission lever sensor and the detection value of the engine rotation sensor is adjusted by the automatic deceleration adjustment lever by the operation of “raising” to raise the planting part. Output to the sub-transmission motor so as to achieve a predetermined deceleration speed, after a predetermined time from the operation of the planting part `` lowering '', or to return to the original speed by the operation of the clutch `` on '' that drives the planting part, Further, when the clutch is “disengaged”, the drawing marker operation switch is “disconnected”, or the drawing marker is stored, the ascending speed of the planting portion is fast and the descending speed is slow. provided with a control apparatus for automatically controlling such a seedling decrease detecting means for detecting that the remaining amount of the seedlings of each seedling surface is reduced below a predetermined level, the seedlings down of conditions in which the clutch is turned oN It is characterized by providing a warning means for warning in a predetermined manner when any of the detection unit detects a decrease seedlings.
[0007]
Ignore the information on the seedling reduction detection means for the line with the clutch disengaged, and output a warning means based on the information on the seedling reduction detection means for the line with the clutch engaged, so only some of the lines are planted When performing the above, a warning notifying that a seedling has decreased is not continuously output, and a warning is appropriately output when the number of seedlings remaining in the planting operation is low.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 and 2 are general views of a rice transplanter which is an example of a seedling transplanter. The rice transplanter 1 has a six-row planting portion 4 mounted on the rear side of the traveling vehicle 2 via an elevating link device 3 so as to be movable up and down, and sprays fertilizer near the side portion of each planting row. A fertilizer application device 5 is provided, which is configured as a riding fertilizer planting machine as a whole.
[0009]
The traveling vehicle 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 as drive wheels. Front wheel final cases 13 and 13 are provided on the left and right sides of the transmission case 12 arranged at the front of the airframe, and the front wheels 10 and 10 are attached to a front wheel axle projecting outward from a lower portion of the front wheel final cases 13 and 13. ing. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case is freely rollable around a rear wheel rolling shaft provided horizontally at the front and rear of the main frame 15 at the left and right central portions of the rear end. 18 and 18 are provided, and the rear wheels 11 and 11 are attached to the rear wheel axle protruding outward from the rear wheel gear case.
[0010]
The engine 20 is mounted on the main frame 15. The rotational power extracted by the engine output shaft 20a protruding from the left side surface of the engine 20 is transmitted to the drive shaft 22a of the hydraulic pump 22 via the first belt transmission device 21, and further continuously variable from the hydraulic pump drive shaft 22a. It is transmitted to the mission input shaft 12a protruding to the left side of the front portion of the mission case 12 via the operable second belt transmission device 23.
[0011]
The rotational power input to the mission case 12 from the mission input shaft 12a passes through the main transmission in the case, and then is separated into traveling power and externally extracted power. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch 28 provided at the rear part of the traveling vehicle body 2 and then transmitted to the planting unit 4 and the fertilizer application device 5 to drive both drive units.
[0012]
The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is disposed in front of the seat 31, a panel 33 having various instruments attached thereto is provided on the top thereof, and a handle 34 for steering the front wheels 10 and 10 is further provided above the panel 33. Is provided. Further, in the vicinity of the seat 31, a main transmission lever 35 for operating the main transmission, an auxiliary transmission lever 36 for operating the second belt transmission 23, which is an auxiliary transmission, other various levers and pedals, and various controls in general. A control box 37 having a built-in control unit 37a (see FIG. 3) is provided. Reference numeral 38 in the figure denotes a spare seedling stage on which a seedling for replenishment is placed, and is provided on the left and right sides of the front portion of the traveling vehicle 2 so as to be rotatable in a horizontal plane.
[0013]
As shown in FIG. 4, the second belt transmission 23 includes a drive-side split pulley 120 fitted to the hydraulic pump drive shaft 22a, a driven-side split pulley 121 fitted to the mission input shaft 12a via the main clutch C, The transmission belt 122 is hung on. One component 121a of the driven-side split pulley 121 is fixed to the mission input shaft 12a, and the other component 121b is slidable in the axial direction with respect to the mission input shaft 12a, and the movable component 121b is a bearing. The position is regulated by a shift operation cam 124 that can freely rotate through 123. On the outer surface side of the speed change operation cam 124, ridges 124 a and 124 a that are inclined in the circumferential direction are formed, and the ridges 124 a and 124 a abut against rollers 125 a and 125 a provided on the fixed cam 125. Yes. A shift operation rod 126 is connected to the arm 124 b of the shift operation cam 124. When the speed change rod 126 is moved back and forth (up and down in the drawing), the speed change cam 124 rotates to change the contact points of the ridges 124a and 124a to the rollers 125a and 125a. The regulated movable component 121b moves in the axial direction according to the tension of the transmission belt 122, whereby the effective diameter of the driven-side split pulley 121 changes.
[0014]
One component 120a of the drive-side split pulley 120 is fixed to the hydraulic pump drive shaft 22a, and the other component 120b is slidable in the axial direction with respect to the hydraulic pump drive shaft 22a. The position of the member 120 b is regulated by a speed change operation cam 128 that can rotate freely through a bearing 127. A protrusion 128a inclined in the circumferential direction is formed on the outer surface side of the speed change operation cam 128, and a roller 129 provided on the outer surface portion of the transmission case 10 is in contact with the protrusion 128a. The other arm 124 c of the driven side shifting operation cam 124 and the arm 128 b of the driving side shifting operation cam 128 are connected by a connecting member 130. Thus, when the effective diameter of the driven side split pulley 121 is increased, the effective diameter of the drive side split pulley 120 is decreased, and when the effective diameter of the driven side split pulley 121 is decreased, the effective diameter of the drive side split pulley 120 is increased. It is like that.
[0015]
The speed change operation mechanism of the second belt transmission 23 is configured as shown in FIG. That is, the lever shaft 42 is rotatably supported by the lever shaft support cylinder 41 fixed to the body frame, and the auxiliary transmission lever 36 is rotatably fitted to one end portion of the lever shaft. The operation position of the auxiliary transmission lever 36 is detected by the auxiliary transmission lever sensor 43. A boss 45 is attached to the other end of the lever shaft 42, and the speed change operation rod 126 is connected to the tip of a rotating plate 46 integral with the boss. When the lever shaft 42 is rotated by the auxiliary transmission motor 47, the second belt transmission device 23 is subjected to a speed change operation via the speed change operation rod 126. The shift position is detected by the auxiliary transmission motor sensor 48.
[0016]
During normal work or running, the control unit is arranged so that the control target value of the shift position represented by the detection value of the sub-shift lever sensor 43 matches the actual shift position indicated by the detection value of the sub-shift motor sensor 48. 37 a is output to the auxiliary transmission motor 47. Thereby, traveling speed control according to the operation position of the auxiliary transmission lever 36 is performed.
[0017]
Further, when the aircraft is turning, the control unit 37a controls the auxiliary transmission motor 47 so that the absolute traveling speed of the aircraft calculated from the detection value of the auxiliary transmission lever sensor 43 and the detection value of the engine rotation sensor 50 becomes a predetermined deceleration speed. Output. For example, when the finger up lever 101 described later is operated to the planting portion “raising”, it automatically decelerates, and after a predetermined time from operating the lever to the planting portion “lowering” or by planting portion “lowering” operation, It may be controlled to return to the original speed when the clutch 28 is “on”. As a result, regardless of the operation position of the auxiliary transmission lever 36, the vehicle is automatically decelerated to a constant speed suitable for turning, so that the turning can be performed safely. The deceleration speed can be adjusted with the automatic deceleration adjusting lever 51. The operation position of the automatic deceleration adjusting lever 51 is input to the control unit 37a by the automatic deceleration adjusting lever sensor 51a.
[0018]
In the above automatic deceleration control, the speed control is not performed when the auxiliary transmission motor 47 is output to the speed increasing side, and the control target value is set to be lower than the lowest speed in the speed change range by the auxiliary transmission motor 47. Sometimes, the auxiliary transmission motor 47 is controlled to the lowest speed.
[0019]
The elevating link device 3 has a parallel link configuration, and includes one upper link 60 and a pair of left and right lower links 61 and 61. These links 60, 61, 61 are rotatably attached to a link base frame 62 erected on the rear end of the main frame 15 on the base side, and a vertical link 63 is connected to the tip side thereof. And the planting part 4 is connected with the vertical link 63 so that rolling is possible. A hydraulic elevating cylinder 65 is interposed between a support member fixed to the main frame 15 and a tip of a swing arm 64 integrally formed with the upper link 60, and the upper link 60 is expanded and contracted by hydraulic pressure. Rotate up and down, and the planting part 4 attached to the vertical link 63 moves up and down while maintaining a substantially constant posture. The hydraulic lift cylinder 65 is controlled to extend and contract by a hydraulic lift valve 66 provided in the traveling vehicle 2.
[0020]
The planting unit 4 has a six-row planting structure and includes a transmission case 70 that also serves as a frame, and a total of six sets of planting devices 71 on the left and right sides of the rear end of the transmission case 70a, 70, 70a. ... is provided. Power is transmitted from the planting clutch 28 to the planting drive shaft 74 of the transmission case 70 through the planting transmission shaft 73, and the chains 75, 75 in the planting transmission portions 70a, 70, 70a are transmitted from the planting drive shaft. Power is transmitted to each planting device 71,. A saddle clutch 76, 76, 76 is provided at the transmission portion of the planting drive shaft 74 and the chains 75, 75, 75. The clutch pins 76a, ... of the saddle clutches 76, ... are operated by the saddle clutch operating motors 78, ... via wires 77, .... The operating position of the eaves clutch lever 79 is detected by the sensor 79a, and the control unit 37a outputs the operation position to the eaves clutch operating motors 78,... Based on the sensor information. Therefore, by operating the heel clutch lever 79, the driving of the planting device 71 can be turned on and off in units of two adjacent lines.
[0021]
In addition, on the upper side of the transmission case 70, a seedling stage 80 is provided so as to be inclined so that the front side is higher. The upper surface of the seedling mounting base 80 is partitioned into seedling mounting surfaces 80a,... Corresponding to the number of planting strips, and a soiled mat-like seedling is mounted on each seedling mounting surface 80a. The seedling stage 80 is reciprocated left and right by a lateral feed mechanism in the transmission case 70, and the seedling receiving frame 81 in which the seedlings on the seedling mounting surfaces 80 a,. Are supplied one by one to the seedling outlet 81a,. The planting devices 71,... Take it out and plant it in the field. A pair of belt-type seedling vertical feed devices 82,... Are provided at the bottom of each seedling placement surface 80a,... And all seedlings for one horizontal row located at the lower end of the seedling placement surface 80a,. Then, the seedling vertical feed device 82, ... operates to transfer the seedlings downward.
[0022]
The seedling vertical feed device 82 has the endless belt 82c hung on the driving roller 82a and the driven roller 82b, and the endless belt 82c is intermittently rotated by rotating the driving roller 82a in conjunction with the left and right reciprocation of the seedling mount 80. It is configured to move. The drive rollers 82a,... Are attached to a common shaft of the respective strips, and the drive rollers of the respective strips rotate integrally. On the other hand, each of the driven rollers 82b,... Is attached to a different shaft. Both ends of this driven roller shaft are supported by bearing plates 83 and 83 so as to be movable up and down in parallel with the seedling placement surface, and the center portion thereof is restricted by a driven roller restricting tool 84. The driven roller restricting tool 84 is interlocked with the rotation of the corresponding saddle clutch operating motor 78 through the wire 85. When the saddle clutch 76 is disengaged, the driven roller restricting tool 84 moves to the drive roller side, and the belt 82c is loosened and the driving roller 82a is idled, and the seedling vertical feeding device 82 does not transfer the seedling.
[0023]
Between the pair of seedling vertical feed devices 82, 82,..., Seedling reduction sensors (seedling reduction detection means) 87 that detect that the remaining amount of seedlings on the seedling placement surface 80a,. Is attached. These seedling reduction sensors 87,... Are connected to the control unit 37a, and when any of the sensors detects seedling reduction, the control unit 37a outputs to the seedling reduction warning lamp 88 and the seedling reduction warning buzzer 89. However, the information of the seedling reduction sensor 87 of the line in which the hook clutch 76 is “disconnected” is ignored, and any of the seedling reduction sensors 87 of the line in which the remaining hook clutch 76 is “on” is ignored. A warning is output when seedling loss is detected.
[0024]
A center float 90 and a pair of left and right side floats 91 and 91 are provided below the planting portion 4. These floats are pivotably mounted so that the front end moves up and down according to the unevenness of the field topsoil surface. When the aircraft is advanced with each float in contact with the ground, the float slides while leveling the mud surface. To do. A seedling is planted by the planting devices 71,.
[0025]
Moreover, the drawing markers 93 and 93 are provided on both the left and right sides of the planting part 4 so as to be able to stand and fall. As shown in FIG. 8, the drawing markers 93 and 93 stand up and down alternately in synchronization with the turning motion of the aircraft, and the overdrawn drawing marker draws the aircraft path in the next stroke to the field surface soil surface. It has become. The drawing marker operation switch 94 (see FIG. 3) turns the drawing marker operation on and off. Further, the drawing markers 93 and 93 can be fixed to the storage position by the hook 95 during transportation or storage.
[0026]
The raising / lowering control of the planting part 4 is based on the planting position lever sensor 100a that detects the operation position of the planting position lever 100, the finger up lever sensor 101a that detects the operation position of the finger up lever 101, and the rotation amount of the upper link 61. The lift link sensor 102 to detect, the float angle sensor 103 to detect the angle of attack of the center float 90 (the angle of the float with respect to the horizontal plane), the saddle clutch lever sensor 79a,..., The line marker operation switch 94, and the line marker 93, Information of the drawing marker storage sensor 104 that detects that 93 is in the storage position is input to the control unit 37a, and the control unit 37a outputs the hydraulic lift valve 68 based on the information. Specifically, the control is performed as follows.
[0027]
When the planting position lever 100 is operated to “planting” located at one end of the operation range, the planting unit 4 descends to the working position, and performs ground elevation control described later. When the planting position lever 100 is operated to a “position” other than the “planting”, the planting unit 4 moves up and down to a position corresponding to the operation position. The position of the planting part 4 is read from the value of the lifting link sensor 102. When the planting position lever 100 is operated to “planting”, the planting clutch 28 is “on”, and when the planting position lever 100 is operated to “position”, the planting clutch 28 becomes “OFF”.
[0028]
The finger up lever 101 is configured to operate with a finger from the neutral position to the “up” side or “down” side and automatically return to the neutral position when the finger is released from the lever. When the finger up lever 101 is operated to “raise”, the planting part 4 is raised to the uppermost position. Further, when the operation is performed to “lower”, the planting unit 4 is lowered to the work position, and the ground lifting control described later is performed. The planting clutch 28 is “ON” when the planting unit 4 is in the working position, and the planting clutch 28 is “OFF” when the planting unit 4 is in any other position.
[0029]
When the planting part 4 exists in a work position, the ground raising / lowering control based on the information of the float angle 103 is performed. That is, when the front part of the center float 90 moves upward and the angle of attack decreases, the hydraulic lift valve 66 is actuated in the direction of extending the hydraulic lift cylinder 65, and conversely, the front part of the center float 90 moves downward and the angle of attack. Is increased, the hydraulic lift valve 66 is actuated in a direction to contract the hydraulic lift cylinder 65. Thereby, the planting part 4 is always maintained at a fixed height with respect to the field scene during planting work.
[0030]
Further, when any of the hook clutches 76 is “disengaged”, the drawing marker operation switch 94 is “disconnected”, or the drawing markers 93 and 93 are stored, the ascending is quick. The ascending / descending speed of the planting part 4 is automatically changed so as to slow down. In each of the above cases, it is determined that the work is being performed on the headland. Therefore, the raising / lowering control is made insensitive so that the planting unit 4 is suddenly lowered and the planting unit 4 does not collide with a ridge or the like.
[0031]
The fertilizer applicator 5 is provided with a fertilizer storage unit 110 and a fertilizer feeding unit 111, ... on the upper rear side of the traveling vehicle 2, and the granular fertilizer stored in the fertilizer storage unit 110 is fed out by a certain amount by the fertilizer feeding unit 111, ... The fertilizer is transferred to the fertilizer guides 113,... Attached to the floats 90, 91, 91 through the fertilizer transfer pipes 112,... The fertilizer is dropped into a fertilizer groove formed near the portion.
[0032]
.. Are driven by a fertilizer driving mechanism (not shown) transmitted from the planting clutch 28. This fertilizer drive mechanism is provided with a fertilizer clutch that can be turned on and off in units of two. The fertilizer application clutch is interlocked with the rotation of the corresponding hook clutch operating motor 78 via the wires 115.
[0033]
The lower part of the fertilizer storage part 110 is hopper-shaped for each strip, and a fertilizer decrease sensor (fertilizer decrease detection means) 116,... For detecting that the remaining amount of fertilizer has decreased below a certain level in the hopper-shaped part. It is attached. These fertilizer reduction sensors 116,... Are connected to the control unit 37a. When any one of the sensors detects a decrease in fertilizer, the control unit 37a detects the fertilizer reduction warning lamp (warning unit) 117 and the fertilizer reduction warning buzzer (warning unit). It outputs to 118. However, the information of the fertilizer reduction sensor 117 of the row where the rod clutch 76 is “disconnected” is ignored, and any of the fertilizer reduction sensors 117 of the row where the remaining rod clutch 76 is “ON” is ignored. A warning is output when seedling loss is detected.
[0034]
【The invention's effect】
As is apparent from the above description, the seedling transplanting machine according to the present invention is configured such that any one of the heel clutches is “off”, the drawing marker operation switch is “off”, or the drawing marker to when is accommodated is elevation control so lowering speed of the planting unit is slow Runode, abruptly planting unit is lowered portion with the plant working in the headland to ridge like It has become possible to prevent accidents causing collisions. In addition, the information of the seedling decrease detection means of the line in which the clutch for individually turning on / off the driving of the planting device of each line is “disconnected” is ignored, and the information of the line in which the clutch is “on” is ignored. Since any of the seedling reduction detecting means is configured to warn in a predetermined method when the seedling reduction is detected, for example, when working on a headland, the streak that has stopped planting is placed on the seedling. When emptying the seedlings on the surface, or when working with a small remaining amount, it is prevented that warnings are output continuously, and the remaining amount of seedlings in the row during planting work is reduced In some cases, the operator can be surely informed.
[0035]
In addition, the present invention is not limited to a warning about seedling reduction, but can be applied to a warning output when fertilizer or other sprayed materials are reduced.
[Brief description of the drawings]
FIG. 1 is an overall side view of a rice transplanter.
FIG. 2 is an overall plan view of a rice transplanter.
FIG. 3 is a block diagram of a control device.
FIG. 4 is a plan sectional view of a second belt transmission device.
FIG. 5 is a front view of a speed change operation mechanism of a second belt transmission device.
FIG. 6 is a transmission mechanism diagram of a planting part.
FIG. 7 is a plan view of the seedling vertical feeding device.
FIG. 8 is a diagram illustrating an operation of a drawing marker.
FIG. 9 is a rear view of the fertilizer application apparatus.
[Explanation of symbols]
1 Rice transplanter (seedling transplanter)
2 Traveling vehicle 3 Elevating link device 4 Planting unit 5 Fertilizer 37 a Control unit 71 Planting device 76 畦 Clutch 78 畦 Clutch operating motor 79 畦 Clutch lever 79 a 畦 Clutch lever sensor 80 Seedling stage 80 a Seedling surface 82 Seedling vertical feed Device 87 Seedling reduction sensor (Seedling reduction detection means)
88 Seedling reduction warning lamp (Warning means)
89 Seedling reduction warning buzzer (warning means)
116 Fertilizer decrease sensor (fertilizer decrease detection means)
117 Fertilizer decrease warning lamp (Warning means)
118 Fertilizer decrease warning buzzer (warning means)

Claims (1)

A planting unit having a seedling table and a planting device is mounted on a traveling vehicle that is driven by driving a driving wheel from an engine via an auxiliary transmission, so that the planting surface of the seedling table is planted. Multiple seedlings that are planted on the field using the planting equipment for the number of planting strips provided for each seedling placement surface. A transplanter, a clutch for turning on and off the drive of the planting device in two adjacent units, and a drawing marker provided on both sides of the machine body, which can stand up and down, and can be fixed in the storage position when not in use A sub-transmission motor for shifting the sub-transmission device, a sub-transmission lever for operating the sub-transmission device, a sub-transmission lever sensor for detecting the operation position of the sub-transmission lever, and automatic deceleration capable of adjusting the deceleration speed An adjustment lever is provided to raise the planting part. The sub-transmission motor so that the absolute travel speed of the airframe calculated from the detection value of the sub-transmission lever sensor and the detection value of the engine rotation sensor becomes the predetermined deceleration speed adjusted by the automatic deceleration adjustment lever To the original speed after a predetermined time from the operation of the planting part `` down '' or by the operation of the clutch `` on '' that drives the planting part, and whether the clutch is `` off '', When the line drawing marker operation switch is set to “OFF” or the line drawing marker is stored, a control device for automatically controlling the planting portion so that the ascending speed is fast and the descending speed is slow is provided. and seedling decrease detecting means for detecting that the remaining amount of the seedlings of each seedling surface is reduced below a predetermined level, either seedlings reduction of said seedling reduction detecting means conditions where the clutch is turned oN Seedling transplanter, characterized in that a and warning means for warning in a predetermined manner when knowledge.

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