JP2014155462A5 - - Google Patents

Description

Seedling transplanter

  The present invention relates to a seedling transplanter for transplanting seedlings in a field.

  The riding rice transplanter described in Prior Art Document 1 is for planting seedlings loaded in a seedling placement tank on a field with a seedling transplanting device, and moves forward and backward by operation of a travel operation lever and by operation of an auxiliary transmission operation lever. It is possible to switch the running state to “road form”, “planting form”, and “neutral form”. When the driving state is "on the road", the power from the engine is distributed to both the driving transmission system and the planting transmission system, and a fixed planting interval is maintained regardless of the level of the driving speed by the driving operation lever. The seedling planting device plantes the seedlings.

  The passenger rice transplanter described in Prior Art Document 2 automatically adjusts the engine speed to the HST output when the travel control lever is operated forward or backward to increase or decrease the output of the hydrostatic continuously variable transmission (HST). It is provided with an auto accelerator mechanism that makes it correspond.

JP 2012-205504 A JP 2010-252638 A

  When the traveling state is in the “planting mode”, the rotational power to the traveling transmission system and the planting transmission system are interlocked, so the aircraft is moved backward to start planting from the field end and the seedling is placed on the field end. When attempting to start planting by lowering the planting device, it may not be possible to plant seedlings for the first strain depending on the timing of interlocking and the working conditions of the field.

  In order to solve this problem, the planting is done manually by the planting of the part, or the auxiliary transmission lever is set to the "neutral form" position where the driving transmission system and the planting transmission system are not linked. After planting one stock, it is necessary to perform complicated operations such as immediately operating the sub-shift lever to the “planting mode” position. In this case, in order to operate the sub-shift operation lever from the “neutral configuration” to the “planting configuration”, the planting operation lever is turned off or the traveling operation lever is placed in the neutral position to plant seedlings. It is necessary to pause.

  When planting seedlings by hand, there is a problem that the time and labor consumed by the worker increases. Moreover, when performing a complicated operation, there is a problem that the planting accuracy of the seedling is lowered if the operation is wrong or the timing of the operation is not matched.

  The automatic accelerator mechanism increases or decreases the engine speed in conjunction with the operation amount of the travel operation lever, and is configured to have an appropriate engine speed based on a general field condition. For this reason, when the viscosity of the field is strong, the rotation speed does not increase to the required engine speed, and a sufficient torque may not be obtained.

  When no additional operation is performed, there is a problem that the traveling speed that matches the operation amount of the traveling operation lever cannot be obtained and the work efficiency is lowered. In addition, it is possible to increase the engine speed with an accelerator pedal at the foot of the worker. In this case, however, the worker is not limited to the hand that operates the travel control lever or the handle, but the foot that operates the accelerator pedal. However, there is a problem that operability is deteriorated.

  Furthermore, when it is necessary to use the diff lock mechanism, such as when turning at the end of the field, it is necessary to step on the diff lock mechanism pedal at the same time, and the operator must stand on the seat and step on the two pedals with both feet. In this respect, the operability is further deteriorated.

  Therefore, it is a problem to be solved by the present invention to provide a seedling transplanter equipped with a transmission system that solves these problems.

In order to solve the above-mentioned problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is provided with a traveling portion on the traveling vehicle body (2), a seedling planting device (4) provided at the rear of the traveling vehicle body (2), and the traveling portion and the seedling planting device (4). A switching operation for providing a transmission (23) for transmission to the vehicle, a planting clutch mechanism (112, 115) for switching the drive of the seedling planting device (4), and for switching the transmission to the traveling unit. A member (16) is provided, and a fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided, and the switching operation member (16) is transmitted to the traveling unit. When the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the planting is detected. The clutch mechanism (112, 115) is connected and the transmission (23 The transmission from, and a seedling transplantation machine, characterized in that the arrangement for driving the seedling planting device (4) remain running stop state by the operation of the switching operation member (16).

According to the second aspect of the present invention , a traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and the transmission is transmitted to the traveling unit and the seedling planting device (4). A shifting operation member (23) for switching on and off, and a planting clutch mechanism (112, 115) for switching on and off the drive of the seedling planting device (4). 16), a fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided, and an operation member (14) for operating the transmission (23) is provided. An output switching actuator (103) for shifting the transmission (23) based on the operation of the operating member (14) is provided, and a planting actuator (104) for switching on / off of the planting clutch mechanism (112, 115). ) is provided, said output switching actuator (10 ) And provided with a control device for controlling the planting actuator (104) (100), said control device (100), said operating member (14) to operate the stop position, and the said switch operating member (16) When operated to a predetermined position, the output switching actuator (103) is operated to shift the transmission (23), and the planting actuator (104) is operated to drive the seedling planting device (4). that the content was was a seedling transplanting machine it said.

According to the third aspect of the present invention , a traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and the transmission is transmitted to the traveling unit and the seedling planting device (4). A shifting operation member (23) for switching on and off, and a planting clutch mechanism (112, 115) for switching on and off the drive of the seedling planting device (4). 16), a fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided, and it is determined that the switching operation member (16) is operated to a predetermined position. When the position planting detection member (101) detects, the planting clutch mechanism (112, 115) is connected, and the travel stop by the operation of the switching operation member (16) by transmission from the transmission (23). The seedling planting device (4) is driven in the state. Wherein the position planting detection member (101) has passed a predetermined time from when the detection state, or to cut the planting clutch mechanism (112, 115), or stops the output of the transmission (23) that the configuration and the was seedling transplanter characterized.

According to the fourth aspect of the present invention , a traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and the transmission is transmitted to the traveling unit and the seedling planting device (4). A shifting operation member (23) for switching on and off, and a planting clutch mechanism (112, 115) for switching on and off the drive of the seedling planting device (4). 16), a fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided, and it is determined that the switching operation member (16) is operated to a predetermined position. When the position planting detection member (101) detects, the planting clutch mechanism (112, 115) is connected, and the travel stop by the operation of the switching operation member (16) by transmission from the transmission (23). The seedling planting device (4) is driven in the state. The rotary detecting member for detecting the rotation of the planting rotation axis (106) of the seedling planting apparatus (4) is provided, said fixed position planting detection member (101) is the rotation detection member from when the detection state (106 ) is when detecting rotation, and with the or cut the planting clutch mechanism (112, 115), or the transmission (23) seedling transplanter you characterized in that a structure for stopping the output of.

According to the fifth aspect of the present invention , a traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and the transmission is transmitted to the traveling unit and the seedling planting device (4). A shifting operation member (23) for switching on and off, and a planting clutch mechanism (112, 115) for switching on and off the drive of the seedling planting device (4). 16), a fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided, and it is determined that the switching operation member (16) is operated to a predetermined position. When the position planting detection member (101) detects, the planting clutch mechanism (112, 115) is connected, and the travel stop by the operation of the switching operation member (16) by transmission from the transmission (23). The seedling planting device (4) is driven in the state. Wherein upon detecting an operation to a predetermined position of the place planting detection member (101) is continuously first predetermined time switching operation member (16), and shift the transmission (23) to the first predetermined value, the When the fixed position planting detection member (101) detects an operation of the switching operation member (16) to a predetermined position continuously for a second specified time after the transmission (23) is shifted to the first specified value, transmission (23) and a second predetermined value seedling transplanter you characterized thereby shifting to.

According to the sixth aspect of the present invention , a traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and transmitted to the traveling unit and the seedling planting device (4). A shifting operation member (23) for switching on and off, and a planting clutch mechanism (112, 115) for switching on and off the drive of the seedling planting device (4). 16), a fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided, and it is determined that the switching operation member (16) is operated to a predetermined position. When the position planting detection member (101) detects, the planting clutch mechanism (112, 115) is connected, and the travel stop by the operation of the switching operation member (16) by transmission from the transmission (23). The seedling planting device (4) is driven in the state. Wherein the transmission of the driving portion to stop providing a biasing member for biasing the neutral position location direction to the switching operation member (16) (105), stopping the operation to the predetermined position of the switching operation member (16) and switching operation member (16) has a neutral position wherein the moving the location with position planting detection member (101) seedling transplanter you characterized in that a non-detection state.

According to a seventh aspect of the present invention, the traveling vehicle body (2) is provided with an engine (20), an operating member (14) for operating the transmission (23) is provided, and is interlocked with the operation of the operating member (14). An automatic accelerator mechanism (121) that operates the automatic accelerator member (128) to increase or decrease the rotational speed of the engine (20) is provided, and the engine rotational speed is adjusted to the lever grip (122) at the upper end of the operating member (14). The throttle lever (123) to be operated is provided, and connecting members (124, 130, 131) for interlocking the throttle lever (123) and the automatic accelerator member (128) are provided. The seedling transplanter according to any one of items 6 is used.
According to an eighth aspect of the present invention, an engine stop member (107) for stopping the engine (20) is provided. When the control device (100) operates the engine stop member (107), the engine (20) After stopping, the continuously variable transmission (23) is set in the output stop state, and the operation position of the travel operation lever (14) when the engine stop member (107) is operated is stored. 14) is moved to the “neutral” position, and when the engine (20) is started again, the output switching actuator (103) is activated, and the output from the continuously variable transmission (23) corresponds to the operation position. The seedling transplanting machine according to claim 7, wherein the seedling transplanting machine is configured to increase in a stepwise manner until the output is increased.

According to the first aspect of the invention, when it has been operated switching operation member (16) in position place the planting detection member (101) is detected, seedling in a state of stopping the transmission of the run line section by planting device (4) is operated, it is possible to instill seedlings in place, effort is not necessary to replanting seedlings manually be reduced.
In addition, since the switching operation member (16) can be operated to a predetermined position only when it is in the neutral position, the planting operation of the seedling to the fixed position is simplified, the operability is improved, and the planting of the seedling is improved. Accuracy is improved.

According to the second aspect of the present invention, when the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the seedling planting is performed in a state where transmission to the traveling unit is stopped. By operating the attaching device (4), seedlings can be planted at a fixed position, so that it is not necessary to manually plant the seedlings and labor is reduced.

In addition, planting seedlings at a fixed position using an output switching actuator (103) for switching the output of the transmission (23) and a planting actuator (104) for turning on and off the planting clutch mechanism (112, 115). By doing so, an increase in the number of parts is suppressed and the planting accuracy of the seedling is improved.

According to the third aspect of the present invention, when the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the seedling planting is performed in a state where transmission to the traveling unit is stopped. By operating the attaching device (4), seedlings can be planted at a fixed position, so that it is not necessary to manually plant the seedlings and labor is reduced.
Further, when a predetermined time elapses after the fixed position planting detection member (101) enters the detection state, the planting clutch mechanism (112, 115) is disconnected or the output of the transmission (23) is stopped. By doing so, planting of the seedling is automatically stopped, so that it is prevented that the seedling is planted in the same place, and the consumption of the seedling is suppressed.

According to the fourth aspect of the present invention, when the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the seedling planting is performed in a state where transmission to the traveling unit is stopped. By operating the attaching device (4), seedlings can be planted at a fixed position, so that it is not necessary to manually plant the seedlings and labor is reduced.
When the rotation detection member (106) detects the rotation of the planting rotation shaft of the seedling planting device (4) after the fixed position planting detection member (101) is in the detection state, the planting clutch mechanism (112, 115) is cut off or the output of the transmission (23) is stopped, so that seedling planting is automatically stopped, so that seedlings are not planted in the same place. The consumption of seedlings is reduced.

According to the fifth aspect of the present invention, when the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the seedling planting is performed in a state where transmission to the traveling unit is stopped. By operating the attaching device (4), seedlings can be planted at a fixed position, so that it is not necessary to manually plant the seedlings and labor is reduced.

Further, when the fixed position planting detection member (101) detects the switching operation member (16) for a certain period of time or longer, the transmission (23) is shifted stepwise, thereby maintaining the seedling planting device (4) and the seedling. When performing operations such as moving the planting device (4) to the left and right ends and aligning the lower ends of the seedlings loaded on the seedling planting device (4), the transmission (23) is shifted without running the machine. Therefore, the work efficiency of the seedling planting device (4), such as maintenance and edge alignment, is improved.
Moreover, since the transmission (23) can be shifted without operating the operating member (14), the work efficiency is further improved.

According to the sixth aspect of the present invention, when the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the seedling planting is performed in a state where transmission to the traveling unit is stopped. By operating the attaching device (4), seedlings can be planted at a fixed position, so that it is not necessary to manually plant the seedlings and labor is reduced.
Further, when the operation of the switching operation member (16) is stopped, the biasing member (105) moves the switching operation member (16) to the “neutral form” position, so that the operator moves the switching operation member (16) to “ There is no need to move to the “neutral form” position, and operability is improved.

Further, even if the operator forgets to move the switching operation member (16) to the “neutral form” position, it is possible to prevent the seedling planting device (4) from operating continuously. Is prevented from being planted, and consumption of seedlings is reduced.

According to the invention of claim 7, wherein, in addition to the effect of the invention as claimed in any one of claims 6, by providing the throttle lever (123) to the lever grip (122), running The engine speed can be adjusted at the same time as the speed is adjusted, which improves operability and keeps the running speed and engine speed in line with the field conditions. Accuracy is improved.
In addition, since the throttle lever (123) and the automatic accelerator member (128) are connected by the connecting members (124, 130, 131), the number of parts is reduced and the maintainability is improved.

According to the invention described in claim 8, in addition to the effect of the invention described in claim 7, when the engine stop member (126) is operated, the control device (100) records the operation position of the operation member (14). When the engine (20) is restarted, the output from the continuously variable transmission (23) is increased to the same extent as when the engine stop member (126) is operated. Since it is possible to automatically return to the traveling speed, it is possible to improve work efficiency while saving fuel.
Further, the control device (100) operates the output switching actuator (103) stepwise so that the output of the continuously variable transmission (23) does not increase suddenly, so that the engine (20) is restarted. Rapid start is prevented, and seedling planting accuracy and safety are ensured.

It is a side view of the seedling transplanter concerning a first embodiment of the present invention. It is a top view of the seedling transplanting machine of FIG. It is explanatory drawing of the control part etc. of the seedling transplanter of FIG. It is a front view of the control part of the seedling transplanter of FIG. It is a drive system figure of the seedling transplanting machine of FIG. It is a drive system figure at the time of "road configuration" of the seedling transplanter of FIG. It is a drive system figure at the time of "planting form" of the seedling transplanter of FIG. It is a drive system figure at the time of the "neutral form" of the seedling transplanter of FIG. It is a block diagram which shows the control system of the seedling transplanter of FIG. It is an operation | movement flowchart of the seedling transplanter of FIG. It is an operation | movement flowchart of the seedling transplanter concerning 2nd embodiment of this invention. It is an operation | movement flowchart of the seedling transplanter concerning 3rd embodiment of this invention. It is a structural diagram of the traveling operation lever of the seedling transplanter according to the fourth embodiment of the present invention. It is an operation | movement flowchart of the seedling transplanter concerning 5th embodiment of this invention. It is a side view of the seedling transplanter concerning a fifth embodiment. It is explanatory drawing of the control panel of the seedling transplanter concerning 6th embodiment. It is explanatory drawing of the control panel of the seedling transplanter concerning 7th embodiment. It is a block diagram of the front wheel suspension of the seedling transplanter concerning 8th embodiment.

  Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings. The forward and backward directions and the left and right directions are based on the forward direction of the seedling transplanter.

  The seedling transplanting machine according to the first embodiment of the present invention is a traveling part composed of left and right front wheels 10 and 10 and left and right rear wheels 11 and 11, as shown in FIGS. And a transmission case 12 that transmits transmission power integrally with the engine 20, left and right front wheel final cases 13 and 13 that transmit and support the left and right front wheels 10 and 10, and left and right rear wheels that transmit and support the left and right rear wheels 11 and 11. A seedling planting planting a seedling plant that is provided with transmission parts such as gear cases 18 and 18 so as to be able to run on the field and that can be moved up and down by a lifting link mechanism 3 at the rear part of the traveling body 2. And an attachment device 4.

  The power transmission path of the seedling transplanter is as follows. The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a belt transmission device 21 and a hydraulic continuously variable transmission 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted.

  A part of the traveling power is transmitted to the front wheel final case 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear case 18 to drive the rear wheels 11 and 11. The left and right front wheel final cases 13 and 13 transmit and support the left and right front wheels 10 and 10 on the side of the transmission case 12, and the left and right rear wheel gear cases 18 and 18 pivot the left and right rear wheels 11 on the left and right sides of the body. An axle to be worn is provided so as to protrude from the left and right sides of the machine body, and receives right and left shift power from the transmission case 12.

  By operating the travel operation lever 14, the operator can continuously (steplessly) shift the hydraulic continuously variable transmission 23 from the 9th forward position through the neutral position to the 6th reverse position. It is a structure which can change a "road form", a "neutral form", and a "planting form" by the operation of the known sub-transmission in the gear-type transmission. Details of this part will be described later.

  Next, the external take-out power is transmitted to one of the planting clutch mechanisms inside the planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling planting device 4 by the planting transmission shaft 26. The fertilizer transmission mechanism 28 transmits the fertilizer to the fertilizer application device 5. The seedling planting device 4 includes a transmission case 50 that receives power from the planting transmission shaft 26 at the rear of the machine body, and an operator supplies seedlings to the seedling mounting table 51 and is arranged in parallel according to the planting condition. The seedlings placed in 52 are planted in the field. Note that the operator can cut off both the traveling power and the external extraction power by depressing the brake pedal.

The configuration of the seedling planting device 4 is as follows.
The seedling planting device 4 provided at the rear of the traveling body 2 of the seedling transplanter shown in this case has a six-row planting structure, a seedling planting transmission case 50 that also serves as a frame, a mat seedling, and a left-and-right reciprocating movement. A seedling placement stand 51 that feeds seedlings downward by a seedling feeding belt 51b,... When supplied to the seedling outlet 51a,. , Planting rods 52 for taking seedlings supplied to the seedling outlet 51a,... And planting them in the field, planting rotary shafts for rotating the planting rods 52, left and right for drawing the aircraft path in the next process to the topsoil surface A pair of drawing markers 19 and the like are provided. In the lower part of the seedling planting device 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with the center float 55 and the left and right side floats 56, 56 in contact with the mud surface of the field, each float 55, 56 slides while leveling the mud surface and is planted on the leveling track. Seedlings are planted by the bales 52,. Each of the floats 55, 56, and 56 is rotatably attached so that the front end side thereof moves up and down according to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. The planting depth of the seedling is always maintained constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting device 4. The seedling planting device 4 is an example of a leveling device, and the left and right side rotors 27a, 27a that are in contact with the field scene in front of the left and right side floats 56, 56 and the field scene in front of the center float 55 A leveling rotor device 27 composed of a center rotor 27b that is in contact with and leveling is attached. The seedling mounting table 51 is configured to slide in the left-right direction using the support roller 65a of the rectangular support frame 65 having a full width in the left-right direction and the up-down direction that supports the entire seedling planting device 4 as a rail.

  The raising / lowering link mechanism 3 which raises / lowers the seedling planting apparatus 4 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. The upper link 40 and the pair of lower links 41, 41 are pivotally attached to a rear-view portal-shaped rear frame 42 whose base side is erected at the rear end portion of the main frame 15, and a vertical link at the front end side thereof. 43 are connected. A connecting shaft 44 that is rotatably supported by the seedling planting device 4 is inserted into and connected to the lower end portion of the vertical link 43, and the seedling planting device 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm integrally formed with the upper link 40. The upper link 40 is expanded and contracted by hydraulically extending the cylinder 46. It rotates up and down and the seedling planting device 4 moves up and down with a substantially constant posture. In addition, the potentiometer which is a raising / lowering detection member is arrange | positioned between the rear frame 42, the upper link 40, and the lower links 41 and 41, and the raising or lowering of the seedling planting apparatus 4 is detected based on a change in angle. .

The configuration around the seedling transplanter operator is as follows.
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 provided in front of the seat 31, and a steering panel 33 is provided on the upper surface thereof, and a handle 34 for steering the front wheels 10 is provided above it. A travel operation lever 14 is provided on the right side of the handle 34, and an engine cover 30 provided with an auxiliary transmission operation member 16 on the left side and the lower left and right sides of the front cover 32 are formed as horizontal floor steps 35, and a clutch pedal or the like is provided. Has been placed. The floor step 35 is partly grid-like, and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

  The fertilizer application device 5 is provided at the rear upper part of the traveling vehicle body 2 and feeds the granular fertilizer stored in the fertilizer hopper 60 by a predetermined amount by the feeding portions 61,..., And the fertilizer is fed by the fertilizer hoses 62,. , 56, 56 are guided to the fertilizer guides attached to the left and right sides of the fertilizer, and are dropped into a fertilizer structure formed in the vicinity of the side portion of the seedling planting strip by a grooved body 64, ... provided on the front side of the fertilizer guide. . Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. It is designed to be transported.

  On both the left and right sides of the front part of the traveling vehicle body 2, the left and right spare seedling platforms 38, 38 on which the seedlings for replenishment are placed can be pivoted to a position protruding sideways from the machine body and a position stored inside. The left and right auxiliary seedling platforms 38 are supported by a support frame 49 having a base side disposed below the floor step 35 of the traveling vehicle body 2.

  The preliminary seedling stage 38 is configured in three stages by a parallel link mechanism composed of a plurality of moving link members, a first preliminary seedling mounting plate 38a, a second preliminary seedling mounting plate 38b, and a third preliminary seedling mounting plate 38c. Has been. In the preliminary seedling stage 38, the preliminary seedling mounting plates 38a, 38b, and 38c are arranged in the front-rear direction on substantially the same plane by the rotation of the parallel link mechanism and the preliminary seedling mounting plates 38a, 38b, and 38c. Are switched to the storage state arranged in the vertical direction overlapping in plan view. This switching is performed by the switching device 70. The switching device 70 is configured by an electric motor or the like, and is provided inside the case 71.

  The power transmission path when the auxiliary transmission operating member 16 is operated will be described with reference to the drive system diagrams of FIGS. The operator does not have to operate each of the plurality of connecting / disconnecting means to make the seedling transplanter perform a desired operation (road running, planting travel, etc.), and it is sufficient to operate the speed change operation member 16.

  FIG. 5 shows a drive system diagram of the seedling transplanter of FIG. The transmission receives power from the engine 20 and supplies power to a “traveling transmission system” that receives traveling power and a “planting transmission system” that receives planting power that is a part of the external extraction power. The “traveling transmission system” can provide power to the “planting traveling transmission system” on the field, which can reduce the speed and obtain torque, or the “road traveling transmission system” on the road, which can obtain the speed while suppressing torque. Supply. The “planting transmission system” supplies power to the “seedling planting unit” constituting the seedling planting device 4. The first connecting / disconnecting means 111 for power is provided between the transmission and the “traveling transmission system”, the second connecting / disconnecting means 112 is provided between the transmission and the “planting transmission system”, and the “traveling transmission system”. The third connecting / disconnecting means 113 between the “planting traveling transmission system” and the fourth connecting / disconnecting means 114 between the “traveling transmission system” and the “road traveling transmission system”, and the “planting transmission system”. And the “seed planting part” are each provided with a fifth disconnecting means 115. And the 2nd connection / disconnection means and the 5th connection / disconnection means which turn on and off the motive power to a "seedling planting part" are made into a "planting clutch mechanism."

  FIG. 6 shows a case where the sub-speed change operation member 16 is in a “road configuration”, that is, the traveling state of the traveling vehicle body 2 is in a mode suitable for traveling on a road outside the field. In this case, the first connecting / disconnecting means 111 and the fourth connecting / disconnecting means 114 are connected, and the other connecting / disconnecting means are disconnected. When the sub-shift operation member 16 is positioned in the “on-road configuration” by the operator, the plurality of connecting / disconnecting means are operated so as to be in the state shown in FIG.

  FIG. 7 shows a case where the auxiliary transmission member 16 is in the “planting mode”, that is, the traveling state of the traveling vehicle body 2 is in a mode suitable for traveling on the field. In this case, the first connection / disconnection means 111, the second connection / disconnection means 112, the third connection / disconnection means 113, and the fifth connection / disconnection means 115 are connected, and the fourth connection / disconnection means 114 is disconnected.

  FIG. 8 shows a case where the auxiliary transmission member 16 is in the “neutral form”. In this case, the second connection / disconnection means 112 and the fifth connection / disconnection means 115 are connected, and the first connection / disconnection means 111, the third connection / disconnection means 113, and the fourth connection / disconnection means 114 are disconnected. That is, since traveling power is not transmitted, the traveling vehicle body 2 is not driven back and forth, and only the seedling planting portion is driven.

  Next, the configuration and the like around the auxiliary transmission operation member 16 of the seedling transplanter according to the first embodiment will be described. FIG. 3A is a view of the periphery of the control unit of the seedling transplanter as viewed from the front and obliquely above, and FIG. 3B is a view of the operation groove for operating the auxiliary transmission operation member 16 in the control unit viewed from the front. It is a figure. FIG. 4 is a front view of the control unit, and FIG. 9 is a block diagram of a control system for the seedling transplanter according to the first embodiment.

  The sub-transmission operating member 16 is arranged in a straight line with the positions of “road configuration”, “neutral configuration”, and “planting configuration” in front and rear, and provided with a lateral groove that can be operated on the right side from the “neutral configuration” position. The field end planting switch 101 which is a touch sensor is provided in a part. An urging member 105 is provided at the base of the auxiliary transmission operation member 16 to return to the “neutral form” position when the operator stops the operation of the auxiliary transmission operation member 16 operated in the lateral groove. The urging member 105 is a torque spring that is fitted to the rotation shaft of the auxiliary transmission operation member 16.

  A travel potentiometer 102 capable of detecting the operation angle of the travel operation lever 14 is provided at the base of the travel operation lever 14, and the value of the travel potentiometer 102 is transmitted to the control device 100. The control device 100 operates the output switching actuator 103 that changes the output of the hydrostatic continuously variable transmission 23 in conjunction with the numerical value of the travel potentiometer 102. Here, the output switching actuator 103 is a servo motor.

  When the operator operates the auxiliary transmission operation member 16 along the lateral groove from the “neutral form” position and contacts the field end planting switch 101 at the end of the groove to turn on the field end planting switch 101, the control device 100 Then, the output switching actuator 103 is operated to increase the output from the continuously variable transmission 23 to the first specified value. Here, the first specified value is a value of an output sufficient to operate only the seedling planting device 4 without causing the traveling vehicle body 2 to travel, and is recorded in the control device 100 or the like in advance. . At the same time, the planting actuator 104 is operated to connect the planting clutch mechanisms 102 and 105.

  When the sub-transmission operation member 16 is operated from the “neutral form” position and the field end planting switch 101 is turned on, the planting clutch mechanisms 112 and 115 are connected and the output from the continuously variable transmission 23 is set to a predetermined value. Since the seedling planting device 4 can be operated without moving the machine body at an arbitrary timing, it can be appropriately applied to the field edge without manual labor or complicated operations. Seedlings can be planted. This makes it possible to use the field effectively.

  Further, by using the output switching actuator 103 and the planting actuator 104 which are existing actuators, seedlings can be appropriately planted at the field edge while suppressing an increase in the number of parts.

  When the operation of the sub-transmission operation member 16 is stopped, the biasing member 105 returns the sub-transmission operation member 16 to the “neutral form” position, so that the output switching actuator 103 puts the continuously variable transmission 23 into the output stop state. In other words, after planting seedlings where necessary, the running state is surely "neutral", improving operability and preventing seedlings from being planted continuously in one place, reducing seedling consumption. .

  FIG. 10 shows an operation flow when the field end planting switch 101 is used in the seedling transplanter according to the first embodiment of the present invention. An operator takes the seedling transplanter back to the field edge to plant the seedling on the field edge. Thereafter, in step 001 (hereinafter referred to as S001), the operator holds the auxiliary transmission operating member 16 with the left hand and operates it from the “neutral form” position to the right side to set the field end planting switch 101 to “ON”. When a signal indicating that the field end planting switch 101 is “ON” is transmitted to the control device 100, the control device 100 operates the output switching actuator 103 for operating the swash plate of the hydrostatic continuously variable transmission 23 in S002. Then, the output from the continuously variable transmission 23 is increased to the first specified value. In addition, the planting actuator 104 is operated in S003 to turn on the second connecting / disconnecting means 112 and the fifth connecting / disconnecting means 115 constituting the planting clutch mechanism. In S004, the timer function provided in the control device 100 is used to count the time after the field end planting switch 101 is set to “ON”. In S005, it is determined whether or not the time for planting one seedling, that is, the time for one rotation of the planting rotation shaft has elapsed. If it has not elapsed, the process does not proceed to the next step S006 until it elapses, and if it has elapsed, the process proceeds to S006. In S006, the planting actuator 104 is operated to disconnect the planting clutch mechanism. In S007, it is determined whether or not a time for one more rotation of the planting rotary shaft has passed by the timer function. If the time has not elapsed, the process does not proceed to the next step S009 until the time elapses. In step S009, the output switching actuator 103 is operated, the continuously variable transmission 23 is stopped, and the series of operations ends.

  After the field end planting switch 101 is turned on, the controller 100 automatically switches the planting clutch mechanisms 112 and 115 when a time for planting one seedling, that is, a time for one rotation of the planting rotation shaft has elapsed. In this configuration, the continuously variable transmission 23 is automatically set in the output stop state, so that even if the operator operates the auxiliary transmission operation member 16 and the field end planting switch 101 remains on, the seedling is automatically generated. Planting is stopped, so that it is prevented that seedlings are planted in duplicate, and consumption of seedlings is reduced.

  In addition, since a series of operations can be performed only by touching the field end planting switch 101 once, operability is improved.

  FIG. 11 shows an operation flow when the field end planting switch 101 is used in the seedling transplanter according to the second embodiment of the present invention. In S101, the operator sets the field end planting switch 101 to “ON”. When a signal indicating that the field end planting switch 101 is “ON” is transmitted to the control device 100, the control device 100 operates the output switching actuator 103 for operating the swash plate of the hydrostatic continuously variable transmission 23 in S102. Then, the output from the continuously variable transmission 23 is increased to the first specified value. In addition, the planting actuator 104 is operated in S103, and the second connecting / disconnecting means 112 and the fifth connecting / disconnecting means 115 constituting the planting clutch mechanism are set to “ON”. In S104, the rotation detection member 106 that detects the rotation of the planting rotation shaft starts rotation detection, and in S105, it is determined whether or not the planting rotation shaft has made one rotation, that is, rotation for planting one seedling. . If it has not made one revolution, it does not proceed to the next step S106 until one revolution, and proceeds to S106 after one revolution. In S106, the planting actuator 104 is operated to disconnect the planting clutch mechanism. In step S107, the output switching actuator 103 is operated, the continuously variable transmission 23 is stopped, and the series of operations ends.

  After the field end planting switch 101 is turned on, the control device 100 automatically detects the planting clutch when the rotation detecting member 106 detects that one seedling has been planted, that is, the planting rotation shaft has made one rotation. By turning off the mechanisms 112 and 115 and then automatically setting the continuously variable transmission 23 to the output stop state, the operator operates the auxiliary transmission operating member 16 and the field end planting switch 101 remains on. In addition, since planting of seedlings is automatically stopped, it is possible to prevent seedlings from being duplicately planted and to reduce the consumption of seedlings.

  In addition, since a series of operations can be performed only by touching the field end planting switch 101 once, operability is improved.

  FIG. 12 shows an operation flow when the field end planting switch 101 is used in the seedling transplanter according to the third embodiment of the present invention. In S201, the operator sets the field end planting switch 101 to “ON”. When a signal indicating that the field end planting switch 101 is “ON” is transmitted to the control device 100, in S202, the control device 100 determines whether or not the field end switch 101 is “ON” for the first specified time or more by the timer function. . The first specified time is, for example, about 10 seconds, which is a time required for the planting rotary shaft to rotate three times, and is recorded in the control device 100 in advance. If it is less than the first specified time, the process does not proceed to the next step S204 until the first specified time. In S204, the output switching actuator 103 is operated to increase the output of the continuously variable transmission 23 to the second specified value. The second specified value is larger than the first specified value and is a so-called “medium speed” value that is about twice as fast as the rotation speed of the planting rotary shaft, and is recorded in the control device 100 in advance. Has been. In S205, it is determined whether or not the field end switch 101 is “ON” for the second specified time or more after the first specified time has elapsed. The second specified time is approximately the same as the first specified time, and is recorded in the control device 100 in advance. When it is less than the second specified time, the process proceeds to S217, and the output of the continuously variable transmission 23 is maintained at the “medium speed” value. If it is the second specified time or more, the process proceeds to S207. In S207, the output switching actuator 103 is operated to increase the output of the continuously variable transmission 23 to the third specified value. The third specified value is larger than the second specified value, and is recorded in the control device 100 in advance as a so-called “high speed” value that is about three times as fast as the rotation speed of the planting rotary shaft is the first specified value. ing. In S208, the output of the continuously variable transmission 23 is maintained at the “high speed” value, and the series of operations is terminated.

  When the field end planting switch 101 is in the on state for a predetermined time or longer, the control device 100 operates the output cut-off actuator 103 to increase the output from the continuously variable transmission 23, thereby maintaining the seedling planting device 4. Or, when performing operations such as moving the seedling planting device 4 to the left and right ends and aligning the lower ends of the seedlings loaded on the seedling planting device 4, the field end switch 101 is simply kept in the on state. The output of the continuously variable transmission 23 can be increased without causing the vehicle to travel. This makes it possible to efficiently perform the edge-alignment work of the seedling planting device 4.

  Further, since the output of the continuously variable transmission 23 can be increased without operating the traveling operation lever 14, the operation of the seedling planting device 4 alone can be performed even on sloping ground. Therefore, it is not necessary to move to a flat place when the seedling planting device 4 is end-aligned, and the work efficiency is further improved.

  FIG. 13 shows a structural diagram of the traveling operation lever 14 of the seedling transplanter according to the fourth embodiment of the present invention. 13A is a rear view of the travel operation lever 14, and FIG. 13B is a side view. The operator rotates the traveling operation lever 14 with the right hand to the front side (left side in FIG. 13) or the rear side (right side in FIG. 13) with the lever rotation fulcrum 126 as an axis. As a result, the hydrostatic continuously variable transmission 23 is operated. The seedling transplanter according to the fourth embodiment has an automatic accelerator mechanism 121. The automatic accelerator mechanism 121 increases or decreases the rotational speed of the engine 20 in conjunction with the operation amount of the traveling operation lever 14. That is, when the traveling operation lever 14 is rotated back and forth around the lever rotation fulcrum 126, the operation pin 129 interlocked therewith operates clockwise around the automatic accelerator member rotation fulcrum 127, and the automatic accelerator member 128 is operated. Is rotated clockwise about the automatic accelerator member rotation fulcrum 127. As a result, the accelerator cable 132 is pulled upward in FIG. 13 and the rotational speed of the engine 20 increases.

  In addition, a throttle lever 123 is provided on the lever grip 122 at the upper end of the traveling operation lever 14 according to the fourth embodiment. The throttle lever 123 is provided on the left side surface of the lever grip 122 so that the operator can operate with the thumb of the right hand. The throttle lever 123 is connected to the first connecting rod 130, the connecting arm 124, the second connecting rod 131, and the automatic accelerator member 128 in this order. When the operator rotates the throttle lever 123 upward, the first connecting rod 130, the connecting arm 124, and the second connecting rod 131, which are connecting members, operate in the direction of the arrow in the figure, and interlock with the operation of the throttle lever 123. Thus, the automatic accelerator member 128 can be rotated clockwise. By adopting such a configuration, the operator can further increase the engine speed from the engine speed by the automatic accelerator mechanism.

  By providing the throttle lever 123 on the lever grip 122, the engine speed can be adjusted while adjusting the running speed, so that the operability is improved and the running speed and the engine speed are adjusted according to the field conditions. Since it is possible to continue, work efficiency and seedling planting accuracy are improved. Moreover, since the conventional accelerator pedal can be made unnecessary, the number of parts can be reduced and the feet can be left free, thereby reducing the labor of the operator. In particular, when a differential lock mechanism is used, the operability is further improved.

  Since the throttle lever 123 and the automatic accelerator member 128 are connected by a connecting member, the number of parts is reduced and the maintainability is improved.

  In FIG. 14, the operation | movement flowchart of the seedling transplanter concerning 5th embodiment of this invention is shown. The seedling transplanting machine according to the fifth embodiment is provided with an engine stop member 107 on the right side of the auxiliary transmission operation member 16 (see FIG. 3). In S301, the operator operates the button switch that is the engine operation member 107. In S302, the control device 100 stops the engine 20, and in S303, the output switching actuator 103 is operated to put the continuously variable transmission 23 in the output stopped state. In S304, the operation position of the travel operation lever 14 when the engine stop member 107 is operated is stored. After the storage, the travel operation lever 14 is moved to the "neutral" position in S305. The operation position of the travel operation lever 14 is read from the numerical value of the travel potentiometer 102. Note that the operation of moving the travel operation lever 14 to the “neutral” position in S305 may be omitted.

  In S306, control device 100 determines whether engine 20 has been restarted by the operator. The process does not proceed to S307 before restarting, and proceeds to S307 when restarting. Here, the engine 20 is restarted by a method of starting by rotating a normal key. In S307, the controller 100 reads the current value of the travel potentiometer 102. In S308, the output switching actuator 103 is operated so as to obtain the value of the travel potentiometer 102 stored in S304, and the output from the continuously variable transmission 23 is obtained. Increase in steps. In S309, the control device 100 determines whether or not the output of the continuously variable transmission 23 has reached the output before the engine 20 is stopped. The output before the engine 20 is stopped is an output corresponding to the operation position of the travel operation lever 14 when the engine stop member 107 is operated. If it is determined that it has not been reached, it does not proceed to S310, but if it is determined that it has arrived, the process proceeds to S310. In S310, the output switching actuator 103 is operated, the output from the continuously variable transmission 23 is maintained, and the series of operations is terminated.

  When the engine stop member 107 is operated, the control device 100 records the operation position of the travel operation lever 14, and when the engine 20 is restarted, the output from the continuously variable transmission 23 increases to the same extent as when the engine stop member 107 is operated. By doing so, it is possible to automatically return to the traveling speed before the stop after completion of the seedling replenishment work, etc., so that the work efficiency can be improved while saving fuel.

  Further, the control device 100 is configured to actuate the output switching actuator 103 step by step so that the output of the continuously variable transmission 23 is not suddenly increased, thereby preventing a sudden start after the engine 20 is restarted. Planting accuracy and safety of seedlings are ensured.

  FIG. 15 shows a side view of the seedling transplanter according to the fifth embodiment. The seedling transplanter according to the fifth embodiment includes a center pole 141 at the tip, and a front guide bar 142 horizontally from the lower mounting portion of the center pole 141 toward the front. A front mark 143 is provided at the front end of the front guide bar 142 in a vertically downward direction. The length of the front guide bar 142 is set so that the length from the front mark 143 to the rear end of the planting basket 52 is twice the length in the left-right direction of the plurality of seedling placement platforms 51. For example, in the case of a six-row seedling transplanter, the length from the front mark 143 to the rear end of the planting basket 52 is the same as the length in the left-right direction of the twelve seedling mounting bases 51.

  By providing the front mark 143, it is possible to leave an unplanted area having a width suitable for the seedling transplanter to make one reciprocation at the end of the field and perform the planting operation. Therefore, the operator can easily determine the unplanted area, and the work efficiency is improved. The front guide bar 142 is configured to rotate at the lower mounting portion of the center pole 141. When the operator operates the handle 34 for turning, the front guide bar 142 rotates in the direction of the handle operation.

  FIG. 16 is an explanatory diagram of the control panel 33 of the seedling transplanter according to the sixth embodiment. FIG. 16A is a front view of the control panel 33, and FIGS. 16B to 16D respectively show the display states of the liquid crystal numerical value display portion 151 on the control panel 33. The control panel 33 according to the sixth embodiment includes a liquid crystal numerical value display unit 151 that indicates the state of each device of the seedling transplanter. The liquid crystal numerical display unit 151 is divided into a numeric part 152, a numeric frame part 153, and a numeric background 154, respectively, and shows different device states depending on the part to be lit. For example, when the speed of the seedling transplanter is shown, only the numerical part is turned on and the other parts are turned off as shown in FIG. When judging whether the side clutch is turned on or off for each line, only the numeric background 154 is turned on as shown in (c), and the other parts are turned off. In the case of displaying a strip that has caused seedling breakage or fertilizer clogging, the numeric background 154 blinks and the other portions are turned off. Thereby, the state of the apparatus can be displayed using the same part. Which display is performed when a plurality of lighting / flashing commands is issued is recorded in the control device 100 in advance.

  FIG. 17 is an explanatory diagram of the control panel 33 of the seedling transplanter according to the seventh embodiment. The control panel 33 according to the seventh embodiment includes LR display units 155 at the left and right ends of the liquid crystal display unit. When the traveling state is changed by the auxiliary transmission operation member 16, the LR display device 155 displays the state of the different devices in the traveling state. For example, when the sub-shift operation member 16 is set to the “road configuration”, the blinker in the direction of turning when turning left and right is blinked by operating the rotation switch portion 157 of the combination switch 156 left and right. At this time, the LR display 155 blinks the display in the turning direction in the same manner as the blinker so as to display the state of the blinker. When the sub-transmission operation member 16 is in the “planting mode”, the drawing marker 19 is tilted by operating the rotation switch portion 157 of the combination switch 156 left and right. At this time, the LR display 155 is configured such that the LR display in the tilted direction is lit so as to display the state of the drawing marker 19.

  Further, the operation of the push button switch unit 158 at the center of the combination switch 156 is also changed when the traveling state is changed by the auxiliary transmission operation member 16. For example, when the traveling state is “road configuration”, the horn sounds when the push button switch unit 158 is pressed, and when the traveling state is “planting configuration”, the drawing marker 19 is switched between right and left. As a result, it is possible to perform a plurality of operations only by providing one combination switch, and the cost can be reduced.

  FIG. 18 shows a configuration diagram of the suspension 159 of the front wheel 10 of the seedling transplanter according to the eighth embodiment. Power from the drive shaft is transmitted to the front wheel 10 through the bevel gear 160. At this time, the suspension 159 is provided above the drive shaft connected to the bevel gear 160, and the shaft center of the suspension 159 is configured to be inclined to the center of the body from the kingpin shaft center. When the suspension 159 is provided below the drive shaft, the suspension 159 is configured such that the axis of the suspension 159 does not pass through the kingpin central axis and the kingpin angle is close to zero. When a plurality of suspensions 159 are provided, the main suspension is wound around the central axis of the kingpin and the sub suspension is configured to have different angles. By doing in this way, the spring part of a suspension comes to slide smoothly.

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 2 Traveling vehicle body 4 Seedling planting device 14 Traveling operation lever 16 Sub-transmission operation member 20 Engine 23 Continuously variable transmission device 51 Seedling mounting stand 52 Seedling implantation pad 100 Controller 101 Field end planting switch 103 Output switching actuator 104 Planting actuator 105 Biasing member 106 Rotation detection member 107 Engine stop member 112 Second connecting / disconnecting member (planting clutch mechanism)
115 Fifth connecting / disconnecting member (planting clutch mechanism)
121 Automatic accelerator mechanism 122 Lever grip 123 Throttle lever 124 Linking arm (cooperating member)
128 Accelerator member 130 First connecting rod (cooperating member)
131 Second connecting rod (linkage member)

Claims (8)

The travel portion provided in the run line vehicle body (2), said vehicle body (2) rear seedling planting device (4) provided in the speed change device for a transmission driving part and NaeUe with device (4) to (23) provided, the seedling planting apparatus planting clutch mechanism to turn on and off the driving movement of (4) (112, 115) is provided, provided the switching operation member (16) to turn on and off operation of the transmission to the traveling portion, the A fixed position planting detection member (101) for detecting an operation of the switching operation member (16) to a predetermined position is provided ,
The switching operation member (16) is configured to be operable to a predetermined position only when the switching operation member (16) is in a neutral position for stopping transmission to the traveling unit.
When the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the planting clutch mechanism (112, 115) is connected and the transmission (23). A seedling transplanter configured to drive the seedling planting device (4) in a state where the traveling operation is stopped by the operation of the switching operation member (16) by transmission from the plant. A traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and a transmission (23) is provided for transmission to the traveling unit and the seedling planting device (4). The seedling planting device (4) is provided with a planting clutch mechanism (112, 115) for switching on and off, and a switching operation member (16) for switching on and off the transmission to the traveling unit is provided. A fixed position planting detection member (101) for detecting an operation of the member (16) to a predetermined position is provided,
An operation member (14) for operating the transmission (23) is provided, an output switching actuator (103) for operating the transmission (23) based on an operation of the operation member (14) is provided, and the planting A planting actuator (104) for switching on / off of the clutch mechanism (112, 115), a control device (100) for controlling the output switching actuator (103) and the planting actuator (104), and
The control device (100) operates the output switching actuator (103) to operate the transmission device when the operation member (14) is operated to the stop position and the switching operation member (16) is operated to the predetermined position. It causes speed change (23), seedling transplantation machine you characterized by actuating it has a structure for driving the seedling planting device (4) the planting actuator (104). A traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and a transmission (23) is provided for transmission to the traveling unit and the seedling planting device (4). The seedling planting device (4) is provided with a planting clutch mechanism (112, 115) for switching on and off, and a switching operation member (16) for switching on and off the transmission to the traveling unit is provided. A fixed position planting detection member (101) for detecting an operation of the member (16) to a predetermined position is provided,
When the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the planting clutch mechanism (112, 115) is connected and the transmission (23). By the transmission from, it is set as the structure which drives the said seedling planting apparatus (4) with the driving | running | working stop state by operation of the said switching operation member (16),
When the constant position planting detection member (101) for a predetermined time elapses from when the detection state, the planting clutch mechanism (112, 115) whether to disconnect, or the output of the speed change device (23) seedling transplanter you characterized in that a structure for stopping. A traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and a transmission (23) is provided for transmission to the traveling unit and the seedling planting device (4). The seedling planting device (4) is provided with a planting clutch mechanism (112, 115) for switching on and off, and a switching operation member (16) for switching on and off the transmission to the traveling unit is provided. A fixed position planting detection member (101) for detecting an operation of the member (16) to a predetermined position is provided,
When the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the planting clutch mechanism (112, 115) is connected and the transmission (23). By the transmission from, it is set as the structure which drives the said seedling planting apparatus (4) with the driving | running | working stop state by operation of the said switching operation member (16),
Rotation detection member (106) is provided, before Kijo position planting detection member (101) is the rotation detection member from when the detection state to detect the rotation of the planting rotation axis of the seedling planting apparatus (4) ( When 106) detects the rotation of the planting rotary shaft, to characterized in that said planting clutch mechanism (112, 115) whether to disconnect, or a configuration for stopping the output of the speed change device (23) Seedling transplanter. A traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and a transmission (23) is provided for transmission to the traveling unit and the seedling planting device (4). The seedling planting device (4) is provided with a planting clutch mechanism (112, 115) for switching on and off, and a switching operation member (16) for switching on and off the transmission to the traveling unit is provided. A fixed position planting detection member (101) for detecting an operation of the member (16) to a predetermined position is provided,
When the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the planting clutch mechanism (112, 115) is connected and the transmission (23). By the transmission from, it is set as the structure which drives the said seedling planting apparatus (4) with the driving | running | working stop state by operation of the said switching operation member (16),
When the fixed position planting detection member (101) detects an operation of the switching operation member (16) to a predetermined position continuously for a first specified time, the transmission (23) is shifted to a first specified value,
When the fixed position planting detection member (101) detects an operation of the switching operation member (16) to a predetermined position continuously for a second specified time after the transmission (23) is shifted to the first specified value, seedling transplanter it characterized thereby shifting the transmission (23) to a second predetermined value. A traveling part is provided in the traveling vehicle body (2), a seedling planting device (4) is provided at the rear part of the traveling vehicle body (2), and a transmission (23) is provided for transmission to the traveling unit and the seedling planting device (4). The seedling planting device (4) is provided with a planting clutch mechanism (112, 115) for switching on and off, and a switching operation member (16) for switching on and off the transmission to the traveling unit is provided. A fixed position planting detection member (101) for detecting an operation of the member (16) to a predetermined position is provided,
When the fixed position planting detection member (101) detects that the switching operation member (16) has been operated to a predetermined position, the planting clutch mechanism (112, 115) is connected and the transmission (23). By the transmission from, it is set as the structure which drives the said seedling planting apparatus (4) with the driving | running | working stop state by operation of the said switching operation member (16),
Wherein the transmission of the driving portion to stop providing a biasing member for biasing the neutral position location direction to the switching operation member (16) (105), stopping the operation to the predetermined position of the switching operation member (16) and switching operation member (16) is seedling transplanter you wherein position planting sensing member moves to the neutral position location (101) is a non-detection state. The traveling vehicle body (2) is provided with an engine (20), an operation member (14) for operating the transmission (23) is provided,
An automatic accelerator mechanism (121) for operating the automatic accelerator member (128) linked to the operation of the operation member (14) to increase or decrease the rotational speed of the engine (20);
A throttle lever (123) for operating the engine speed is provided on the lever grip (122) at the upper end of the operation member (14),
The throttle lever (123) and according to claims 1, wherein the providing an automatic accelerator member (128) cooperative member for interlocking the (124,130,131) to any one of claims 6 Seedling transplanter.   An engine stop member (107) for stopping the engine (20) is provided;
  When the control device (100) operates the engine stop member (107), the engine (20) is stopped, the continuously variable transmission (23) is stopped, and the engine stop member (107) is stopped. ), When the operation position of the travel operation lever (14) is stored, the travel operation lever (14) is moved to the “neutral” position,
  When the engine (20) is started again, the output switching actuator (103) is actuated, and the output from the continuously variable transmission (23) is gradually increased to the output corresponding to the operation position. The seedling transplanter according to claim 7.