JP6996434B2 - Passenger rice transplanter with fertilizer application device - Google Patents

Description

The present invention relates to a passenger-type rice transplanter equipped with a fertilizer application device that applies fertilizer at the same time as the seedling transplanting operation.

As described in Patent Document 1, a passenger-type rice transplanter equipped with a fertilizer application device sends out granular fertilizer by blowing a blower through a fertilizer hose connected to a seedling planting part from a feeding part of a fertilizer tank mounted on the machine to plant seedlings. Fertilizer is applied in the vicinity of.

Japanese Unexamined Patent Publication No. 2017-140047

In the passenger-type rice transplanter equipped with the fertilizer application device, it is necessary to confirm whether the fertilizer is surely sprayed before the seedling transplanting work, but if the blower is driven as it is and the fertilizer is sprayed as a trial. There is a problem that a large amount of fertilizer is discharged by a strong blast at the stop position of the aircraft.

In view of such a problem of the conventional passenger-type rice transplanter equipped with a fertilizer application device, the present invention performs a trial fertilizer application with a small amount of fertilizer before transplanting with a passenger-type rice transplanter equipped with a fertilizer application device to obtain a fertilizer application state. The purpose is to be able to confirm and start the porting work.

The above-mentioned conventional problems are solved by the following technical means.

The invention of claim 1 is a passenger-type rice transplanter equipped with a fertilizer application device for sending granular fertilizer by blowing air from a blower 58 in a fertilizer application hose 62 passed from a feeding unit 61 of a fertilizer tank 60 mounted on a traveling vehicle body 2 to a seedling planting unit 4. The machine is a passenger-type rice transplanter equipped with a fertilizer application device, which is provided with a trial switch 63 for intermittently driving the blower electric motor 53 for a predetermined time.

The invention of claim 2 is the passenger-type rice transplanter with a fertilizer application device according to claim 1, wherein the trial switch 63 is provided in the vicinity of the feeding portion 61 of the fertilizer tank 60.

The invention according to claim 3 is the fertilizer application device according to claim 1, wherein the planting switch 68 for starting the drive of the seedling planting unit 4 is driven on under the condition that the fertilizer application switch is turned on. It will be a passenger-type rice transplanter with a switch.

In the invention of claim 1, the fertilizer is supplied from the fertilizer tank 60 to the seedling planting section 4 by turning on the trial switch 63 and intermittently driving the electric motor 53 for the blower for a predetermined time to reduce the amount of air blown. Then, since the supply state can be visually confirmed by visually observing the fertilizer sent in the fertilizer application hose 62, the fertilizer consumption before the transplanting work can be reduced. Further, since the blower electric motor 53 may be a normal electric motor instead of being driven by an inverter, it can be configured at low cost.

In the invention of claim 2, in addition to the effect of claim 1, the trial switch 63 can be operated while checking the movement of the fertilizer inside near the fertilizer tank 60.

In the invention of claim 3, in addition to the effect of claim 1, when the planting switch 68 is turned on and the transplanting work is started, fertilizer is surely sprayed to the seedling planting section 4.

It is a left side view of a passenger-type rice transplanter. It is a top view of a passenger-type rice transplanter. It is a block diagram of the power transmission system and the control system of a passenger-type rice transplanter. It is a schematic plan view near the auxiliary shift lever. It is a schematic rear view of a passenger-type rice transplanter. It is a schematic front view (part 1) of a passenger-type rice transplanter. It is a schematic front view (No. 2) of a passenger-type rice transplanter. It is a schematic front view (No. 3) of a passenger-type rice transplanter. It is a partially enlarged rear view of a fertilizer tank. It is a perspective view of a planting operation lever. It is a control flowchart figure of the electric motor for a blower.

Hereinafter, an embodiment of a passenger-type rice transplanter with a fertilizer application device according to the present invention will be described in detail with reference to the drawings.

In this specification, the front-rear and left-right direction standards define the front-rear and left-right reference based on the traveling direction of the vehicle body when viewed from the driver's seat.

First, the configuration of the passenger-type rice transplanter 8 will be specifically described with reference to FIGS. 1 and 2.

FIG. 1 shows a state in a side view of a passenger-type eight-row rice transplanter 8 equipped with a traveling vehicle body 2, and FIG. 2 shows a state in a plan view.

In the passenger rice transplanter 8, the seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via the elevating link mechanism 3, and the main body portion of the fertilizer application device 5 is provided on the rear upper side of the traveling vehicle body 2. ..

The traveling vehicle body 2 is a four-wheel drive vehicle provided with a pair of left and right front wheels 10 and a pair of left and right rear wheels 11 as driving wheels. The front wheel final case 13 is provided on the side, and the left and right front wheels 10 are attached to the left and right front wheel axles protruding outward from each front wheel support portion whose steering direction of the left and right front wheel final case 13 can be changed.

Further, the front end portion of the main frame 15 is fixed to the back surface portion of the mission case 12, and the rear wheel gear case 18 is provided as a fulcrum with the rear wheel rolling shaft provided horizontally in the front and rear at the left and right center portions of the rear end of the main frame 15. The rear wheel 11 is attached to a rear wheel axle that is freely rolled and projects outward from the rear wheel gear case 18.

The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the mission case 12 via the belt transmission device 21 and the HST 23.

The rotational power transmitted to the transmission case 12 is changed by the transmission in the transmission case 12, and then branched into a traveling power and an external extraction power and taken out. Then, a part of the traveling power is transmitted to the front wheel final case 13 to drive the front wheels 10, and the rest is transmitted to the rear wheel gear case 18 to drive the rear wheels 11.

Further, the external extraction power is transmitted to the planting clutch case 25 provided at the rear of the traveling vehicle body 2, then transmitted to the seedling planting portion 4 by the planting transmission shaft 26, and to the fertilizer application device 5 by the fertilization transmission mechanism. Be transmitted.

The upper part of the engine 20 is covered with the engine cover 30, and the driver's seat 31 is installed on the engine cover 30. In front of the driver's seat 31, there is a front cover 32 having various operation mechanisms built-in, and above the front cover 32, a steering handle 34 for steering and operating the front wheels 10 is provided.

The left and right sides of the lower ends of the engine cover 30 and the front cover 32 are horizontal floor steps 35. The floor step 35 is partly in a grid pattern (see FIG. 2), and mud on the shoes of a worker walking on the floor step 35 falls into the field.

Further, a seedling pedal 70 and a parking pedal 71 are provided on the right side of the floor step 35, and when the seedling pedal 70 is depressed, the rotation of the engine 20 is reduced to the idling rotation and the grounding of the left and right markers 200L and 200R is switched to the seedling. The operation of raising the planting portion 4 from the field is performed. This seedling pedal 70 stops the running of the traveling vehicle body 2 and replenishes the replenishment mat seedlings by stepping on the mat seedlings when the mat seedlings disappear from the spare seedling frame 38 and returns to the shore where the replenishment mat seedlings are placed. It becomes easier to turn and transplant to the next row.

The parking pedal 71 stabilizes the stopping posture of the traveling vehicle body 2 by ensuring the running stop, but the seedling pedal 70 and the parking pedal 71 can be connected to the seedling pedal 70 integrally with one step. If it is stepped on, the operation becomes simpler at the time of seedling splicing work.

When the temperature of the engine cooling water is low, the engine 20 is not lowered to idling or stopped even if the idling stop mechanism is provided. The idling stop mechanism starts the engine 20 in order to avoid battery consumption when the stop time is long.

The elevating link mechanism 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41. The upper link 40 and the lower link 41 are rotatably attached to a rear gate-shaped link base frame 42 whose base side is erected at the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. Has been done. A connecting shaft 44 rotatably supported by the seedling planting portion 4 is inserted and connected to the lower end of the vertical link 43, and the seedling planting portion 4 is rotatably connected around the connecting shaft 44.

An elevating hydraulic cylinder 46 is provided between the support member fixed to the main frame 15 and the tip of a swing arm (not shown) integrally formed with the upper link 40, and the elevating hydraulic cylinder 46 is hydraulically expanded and contracted. As a result, the upper link 40 rotates up and down, and the seedling planting portion 4 moves up and down while maintaining a substantially constant posture.

The seedling planting section 4 has an eight-row planting structure, in which a planting transmission case 50 that also serves as a frame and mat seedlings are placed and reciprocated left and right to supply seedlings one by one to the seedling outlet 51a of each row and laterally. When all the seedlings for one row are supplied to the seedling outlet 51a, the seedlings are transferred downward by the seedling feeding belt 51b, and the seedlings supplied to the seedling outlet 51a are planted in the field by the seedling planting tool 54. It is equipped with an attachment device 52 and the like.

The rear part of the planting transmission case 50 is branched into four, and a planting drive shaft is rotatably supported at each of the branched rear ends, and a rotary case is provided on the left and right protruding portions of the planting drive shaft. The central portion of 16 is fixedly attached so as to rotate integrally.

Further, a planting rotation shaft is rotatably supported at both ends of the rotary case 16, and a seedling planting tool 54 is attached to each of these two planting rotation shafts.

At the lower part of the seedling planting portion 4, a center float 55 is provided in the center, and a middle float 57 and a side float 56 are provided on both left and right sides thereof. When the aircraft is advanced with these floats 55, 57, 56 grounded on the mud surface of the field, the floats 55, 57, 56 slide while leveling the mud surface, and the seedling planting device 52 slides on the land leveling trace. Seedlings are planted.

The floats 55, 57, and 56 are rotatably attached so that the front end side moves up and down in response to the unevenness of the topsoil surface of the field, and the vertical movement of the front part of the center float 55 controls the angle of attack during planting work. The seedling planting depth is always constant by switching the hydraulic valve that controls the elevating hydraulic cylinder 46 according to the detection result by a sensor (not shown) and raising and lowering the seedling planting unit 4. maintain.

The fertilizer application device 5 dispenses a certain amount of granular fertilizer stored in the fertilizer tank 60 by a feeding unit 61, and the fertilizer is attached to the left and right sides of the center float 55 and the side float 56 by a fertilizer application hose 62 (FIG. It is configured to be guided to (not shown) and dropped into the fertilizer application structure formed near the side of the seedling planting strip by the groove body (not shown) provided on the front side of the fertilizer application guide. The air generated by the blower 58 driven by the electric motor 53 for the blower is blown into the fertilizer hose 62 via a long air chamber 59 in the left-right direction, and the fertilizer in the fertilizer hose 62 is forcibly conveyed by wind pressure. It has become.

As shown in FIG. 9, a trial switch 63 is provided in the vicinity of the feeding portion 61 on the back surface of the fertilizer tank 60, and when the trial switch 63 is continuously pressed, the electric motor 53 for the blower is intermittently driven for a predetermined time in each fertilizer application hose 62. The fertilizer sent can be visually confirmed.

FIG. 10 shows a planting operation lever 67, and when the fertilizer discharge lever 69 provided on the planting operation lever 67 is turned on and the planting switch 68 is pressed to turn it on, the planting operation of the seedling planting portion 4 is started. Since the planting operation is not started even if the planting switch 68 is pressed without turning on the fertilizer discharge lever 69, fertilizer application is surely performed together with the transplanting operation.

FIG. 11 is a control flowchart of the electric motor 53 for the blower. When the fertilizer discharge lever 69 is in the fertilizer application position, the link sensor that detects the ascending / descending of the seedling planting portion 4 rotates the blower 58 under the condition of detecting the descending state. However, when the trial switch 63 is turned on, the blower 58 is intermittently driven for t seconds by power control to confirm the spraying of fertilizer.

When the fertilizer discharge lever 69 is on the discharge side, the blower 58 is driven to discharge the fertilizer regardless of the state of the link sensor, and the discharge end buzzer is discharged T seconds after the remaining amount sensor in the hopper detects nothing. Sounds and the push switch is pressed or the discharge end buzzer is stopped after U seconds have elapsed.

A first leveling rotor 27a and a second leveling rotor 27b (a combination of the first leveling rotor 27a and the second leveling rotor 27b may be simply referred to as a leveling rotor) are attached to the seedling planting portion 4.

Further, the seedling mounting table 51 is configured to slide in the left-right direction on the rail by using the support roller 65a of the rectangular support frame 65 having the full width in the left-right direction and the up-down direction to support the entire seedling planting portion 4. Is.

Further, a pair of spare seedling frames 38 on which seedlings for replenishment are placed are provided on both left and right sides of the front portion of the traveling vehicle body 2.

Next, the configuration and operation of the power transmission system and the control system of the passenger rice transplanter 8 of the present embodiment will be specifically described with reference to FIGS. 3 and 4.

Here, FIG. 3 is a block diagram of a power transmission system and a control system of the passenger rice transplanter 8 according to the embodiment of the present invention, and FIG. 4 is an auxiliary speed change lever of the passenger rice transplanter 8 according to the embodiment of the present invention. It is a schematic plan view near 100.

In FIG. 3, the power transmission system is shown using a solid line, and the control system is shown using a dotted line. Further, in FIG. 4, the movement of the auxiliary shift lever 100 is illustrated by using an arrow.

As described above, the rotational power transmitted to the mission case 12 is separated into a traveling power and an external extraction power, and the traveling power is used as follows.

The rear wheel 11 rotates by utilizing the driving force transmitted from the engine 20 via the HST 23 as the main transmission. Then, the auxiliary shift lever 100 sets the mode of transmitting the driving force to the rear wheel 11 or the in-situ planting mode A for causing the seedling planting tool 54 to plant seedlings on the spot without rotating the rear wheel 11. Select according to the lever operation position.

More specifically, as the lever operation position of the auxiliary shift lever 100, a position corresponding to any of the planting travel mode B, the neutral mode C, the road traveling mode D, and the in-situ planting mode A is selected (FIG. 4). Further, which lever operation position of the auxiliary shift lever 100 is selected is detected by the auxiliary shift lever sensor 101.

The external extraction power is transmitted to the feed case 180, then to the seedling planting tool 54, and also to the fertilizer application device 5, and is transmitted to the lateral feed screw shaft (not shown) to be transmitted to the seedling mounting table 51. Is used to reciprocate in the left-right direction, and is also transmitted to a seedling feed drive shaft (not shown) to drive the seedling feed belt 51b.

That is, the external extraction power is used as follows.

The seedling stand 51 reciprocates in the left-right direction by utilizing the driving force transmitted from the engine 20 via the HST 23, and the seedling planting tool 54 plants the seedlings mounted on the seedling stand 51. Then, the planting clutch mechanism 120 selects an on mode or an off mode as a mode for transmitting the driving force to the seedling mounting table 51, the seedling planting tool 54, and the like.

More specifically, the seedling mounting table 51 is reciprocated in the left-right direction by a sliding mechanism such as a lead cam mechanism in which the lead metal is in contact with the lead cam shaft. Then, switching between connection and disconnection of the planting clutch mechanism 120 using the planting clutch on / off actuator such as the planting clutch servomotor is a command from the planting clutch switch 121 based on the planting clutch on / off operation of the operator. , Or in response to a command from the controller 160. Further, whether the planting clutch mechanism 120 is connected or disconnected is detected by the planting clutch sensor 122.

The HST lever 111 as the main shift lever indicates the output value of the HST 23 according to the lever operation position.

More specifically, the change of the opening degree of the HST trunnion shaft 112 using the HST output variable actuator such as the HST servo motor is a command from the HST lever 111 based on the operator's HST lever operation, or a command from the controller 160. It is done according to the order. The HST lever operation amount is detected by the HST sensor 113 using a potentiometer or the like, and the opening degree of the HST trunnion shaft 112 is also detected by the HST sensor 113.

The edge-aligning mode switch 150 as the edge-aligning mode selection member selects the edge-aligning mode for stopping the seedling loading table 51 by moving it toward the left or right edge according to the operation of the operator.

Whether or not the seedling stand 51 is brought to the edge is detected by the edge sensor 131 using a limit switch or the like.

When the edge alignment described in detail later is performed, the operator disengages the minority clutch 181 that switches the on / off state of the transmission of the driving force to the left and right seedling planting tools 54, which the seedling planting device 52 has. It is desirable that the seedling planting portion 4 is raised as well as being performed in advance based on the operation of the small number of clutch levers.

When the minority strip clutch 181 is disengaged, the seedling feeding by the seedling feeding belt 51b and the fertilizing by the fertilizing device 5 in the corresponding planting suspension strip are also suspended.

Next, the configuration and operation of the passenger rice transplanter 8 of the present embodiment with respect to (A) edge-alignment control, (B) in-situ planting control, and (C) seedling stand tilt adjustment control by the controller 160 are described in detail in order. I will describe it.

(A) Edge alignment control With reference mainly to FIG. 3, an edge alignment control for moving the seedling loading table 51 toward the left or right edge and stopping it will be described.

The edge alignment is executed when the edge alignment mode is selected by pressing the edge alignment mode switch 150.

When the lever operation position of the HST lever 111 is in the neutral position and the opening degree of the HST trunnion shaft 112 corresponds to the neutral position, the edge alignment mode is turned on each time the edge alignment mode switch 150 is pressed down. And the off state are alternately selected, otherwise the off state of the edge justification mode is always selected when the edge justification mode switch 150 is pressed down.

The edge-aligned mode lamp (not shown) turns on when the edge-aligned mode is selected and turns off when the edge-aligned mode is off. Further, the orange center mascot lamp 9 flashes, for example, with a cycle of 500 ms and an ontime of 250 ms when the edge-aligned mode is selected.

In the present embodiment, the edge alignment mode is selected for the edge alignment control, (1) the planting clutch mechanism 120 is connected, and (2) the transmission output amount of the HST 23 is the second. It actually starts when all of the predetermined conditions that the value exceeds one reference value are satisfied. The fact that the transmission output amount of the HST23 exceeds the first reference value means that, for example, the HST lever operation amount is 80% or more of the forward operation amount (BLVn (lever expansion value) exceeds 198). .. The first reference value is set to a large value so that the offset control is executed accurately.

Regarding the opening degree of the HST trunnion shaft 112, when the edge alignment control is executed, the HST output control having a different target value is executed depending on the on / off state of the sparsely planted check switch (not shown). If not, normal HST output control according to the HST lever operation amount is executed.

For example, when the adjustable range is 0 to 255, the default target value ha3a corresponding to the off state of the sparsely planted check switch is 150, and the default target value ha3b corresponding to the on state of the sparsely planted check switch is 190. .. Of course, such a default target value is set according to the type of the passenger rice transplanter 8 and the like. However, the default target value ha3b is set to a large value so that the edge alignment control is accurately executed even when the sparse planting check in which the output amount of the transmission of the HST 23 is suppressed is executed.

The buzzer (not shown) sounds intermittently, for example, with a cycle of 1 second and an on-time of 300 milliseconds when the edge alignment control is executed, and the edge alignment control is performed by the edge alignment sensor 131. When it is terminated according to the detection, it sounds for one second, for example.

When the edge alignment control is completed, the planting clutch mechanism 120 is disengaged and the edge alignment mode is turned off.

In the edge alignment control, (1) the planting clutch mechanism 120 was disengaged, (2) the transmission output amount of the HST23 fell below the second reference value, and (3) the edge alignment mode was turned off. If at least one of the three conditions is met, it will be interrupted or terminated. The fact that the transmission output amount of the HST 23 is less than the second reference value means that, for example, the HST lever operation amount is 75% or less of the forward operation amount (BLVn is less than 192). The second reference value is set slightly smaller than the first reference value so that the offset control is not interrupted or terminated unnecessarily.

By the way, the edge alignment in which the seedling loading table 51 is moved to the left or right edge and stopped is typically before the planting work in which the consumption of seedlings is required to be as uniform as possible in the left-right direction. Or, it is performed after the planting work is performed in which the large passenger rice transplanter 8 whose folding structure is adopted at the left and right ends of the seedling loading platform 51 is loaded on the loading platform of a light truck or the like.

In such a case, normally, the seedlings are not loaded on the seedling loading table 51, the auxiliary transmission lever 100 is operated in advance, and the traveling power is not transmitted to the rear wheels 11.

Therefore, in a typical procedure when the operator wants to perform edge alignment, the engine 20 is generating power, but the amount of operation of the auxiliary transmission lever of the auxiliary transmission lever 100 is zero, and the traveling power is the rear wheel. After confirming that the transmission has not been transmitted to 11, the predetermined edge-aligned mode on / off operation, planting clutch on / off operation, and HST lever operation as described in detail above are performed in this order.

However, if it is not confirmed for some reason that the auxiliary shift lever operation amount of the auxiliary shift lever 100 is zero and the auxiliary shift lever operation amount is not actually zero, the passenger rice transplanter 8 starts rapidly. There is a risk that it will end up.

This is because, conventionally, when the edge alignment mode is selected, the output value of the HST 23 is (a) zero if the lever operating position of the HST lever 111 does not exceed a predetermined position, and (b). This is because HST output control is often adopted, in which if the lever operating position of the HST lever 111 exceeds a predetermined position, the lever operating position is increased to a predetermined value according to the lever operating position of the HST lever 111.

Therefore, when the edge alignment mode is selected, the HST output control such that the output value of the HST 23 is increased to a predetermined value according to the lever operation position of the HST lever 111 is the HST output control of the present embodiment. Has been adopted as.

That is, when the operator performs the end-alignment mode on operation and the planting clutch on operation and starts the HST lever operation, the output value of the HST 23 is gradually increased according to the lever operation position of the HST lever 111.

Then, even if the lever operating position of the auxiliary shift lever 100 is not in the neutral position, the passenger rice transplanter 8 starts gradually without starting rapidly.

Therefore, the operator immediately notices that the lever operation position of the auxiliary shift lever 100 is not the neutral position, and can appropriately operate the auxiliary shift lever 100 so that the passenger rice transplanter 8 does not start.

Therefore, there is almost no possibility that the passenger rice transplanter 8 will start rapidly when the edge alignment mode is selected.

Of course, when the edge alignment mode is selected, the output value of the HST 23 is set to zero regardless of the lever operation position of the HST lever 111 unless the lever operation position of the auxiliary shift lever 100 is in the neutral position. Other embodiments are also conceivable.

Then, there is almost no possibility that the passenger rice transplanter 8 will start when the edge alignment mode is selected.

When the HST output control of another embodiment is adopted, the output of the HST 23 is output if the lever operation position of the auxiliary shift lever 100 is in the neutral position when the edge alignment mode is selected. The value may be increased to a predetermined value according to the lever operating position of the HST lever 111, or (a) is set to zero if the lever operating position of the HST lever 111 does not exceed the predetermined position, and (b). If the lever operating position of the HST lever 111 exceeds the predetermined position, the lever operating position may be increased to a predetermined value according to the lever operating position of the HST lever 111.

(B) In-situ planting control With reference mainly to FIG. 3, in-situ planting control for planting seedlings on the seedling planting tool 54 without rotating the rear wheel 11 will be described.

The in-situ planting is executed when the position corresponding to the in-situ planting mode A is selected as the lever operation position of the auxiliary shift lever 100 (see FIG. 4).

An embodiment in which a dedicated switch for selecting the in-situ planting mode A is used is conceivable, but in the present embodiment, the auxiliary shift lever 100 is also used as such a switch. Therefore, there is almost no possibility that the passenger rice transplanter 8 will start when the in-situ planting mode A is selected.

Of course, for example, when the stop pedal switch (not shown) is turned off, the seedling planting portion 4 is lowered, and the floats 55, 56, and 57 are in the grounded state, they are planted in place. An embodiment in which mode A can be selected, but if not, in-situ planting mode A cannot be selected is also conceivable.

In the present embodiment, the in-situ planting mode A is selected for the in-situ planting control, and (1) the HST safety control for performing the automatic operation of the HST23 is not executed, (2). The link mechanism automatic elevating mode of the elevating link mechanism 3 is executed, (3) the floats 55, 56 and 57 are in the grounded state, and (4) the lever operating position of the HST lever 111 is the neutral position, and the HST. It is actually started when all of the predetermined conditions that the opening degree of the trunnion shaft 112 corresponds to the neutral position is satisfied.

In the above HST safety control, when an abnormal state of the HST sensor 113 is detected due to interruption of energization due to disconnection or occurrence of abnormal energization due to failure, or the stop pedal (not shown) controls in-situ planting. This control is performed when the HST23 is forcibly neutralized by stepping on to the action position to stop and reacting with the safety switch. Then, during the execution of the HST safety control, the opening degree of the trunnion shaft 112 of the HST is not changed even if the HST lever 111 is operated.

Regarding the opening degree of the HST trunnion shaft 112, when the in-situ planting control is executed, the HST output control having different target values is executed according to the on / off state of the sparse planting check switch.

This is the same as in the case of the offset control described above.

That is, for example, when the adjustable range is 0 to 255, the default target value ha3a corresponding to the off state of the sparsely planted check switch is 150, and the default target value ha3b corresponding to the on state of the sparsely planted check switch is 190. Is. Of course, such a default target value is set according to the type of the passenger rice transplanter 8 and the like. However, the default target value ha3b is set to be large so that the in-situ planting control is accurately executed even when the sparse planting check in which the output amount of the transmission of the HST 23 is suppressed is executed.

The buzzer sounds intermittently, for example, with an on-time of 300 milliseconds when the in-situ planting control is being executed, and the green and orange center mascot lamps 9 blink in conjunction with the buzzer.

Of course, the planting clutch mechanism 120 is automatically connected in response to a command from the controller 160.

Then, for example, an in-situ planting control monitoring timer value of 10 seconds is set, and an in-situ planting control operation timer value of 1200 milliseconds is set. The in-situ planting control operation timer value is set according to the type of the seedling planting tool 54 so that the planting of the seedlings at the ridge is performed only once by the planting rod rotation.

Until 1200 milliseconds set as the in-situ planting control operation timer value elapses, the above-mentioned HST output control is continuously executed, and the planting clutch mechanism 120 is continuously connected. This is to ensure that the seedling loading table 51 is moved and the seedling planting tool 54 is rotated in the same manner as in the case of the edge alignment control described above.

After the in-situ planting control operation timer has expired after 1200 ms, for example, the HST trunnion axis neutral wait timer value of 500 ms is set and the opening of the HST trunnion shaft 112 is set to the neutral position. HST output control with the corresponding default target value ha3 is executed and the planting clutch mechanism 120 is subsequently connected.

For example, when the adjustable range is 0 to 255, the default target value ha3 is 101. Of course, such a default target value is set according to the type of the passenger rice transplanter 8 and the like.

Until the elapse of 500 milliseconds set as the HST trunnion axis neutral wait timer value, HST output control with the default target value ha3 corresponding to the neutral position of the opening of the HST trunnion axis 112 is continuously executed. The planting clutch mechanism 120 is subsequently connected. This is to ensure that the planting rod rotation in the seedling planting tool 54 is performed until the planting rod reaches a predetermined stop position.

After the timer of the HST trunnion shaft neutral wait timer has passed after 500 milliseconds, the HST output control having the default target value ha3 corresponding to the neutral position of the opening of the HST trunnion shaft 112 is continuously executed and planted. The clutch mechanism 120 is disengaged.

When the lever operating position of the HST lever 111 is in the neutral position and the opening degree of the HST trunnion shaft 112 corresponds to the neutral position, the controller 160 ends the in-situ planting control.

When the in-situ planting control is completed, the planting clutch mechanism 120 is connected. This is to ensure that normal planting after in-situ planting is performed without the need for a command from the planting clutch switch 121 based on the operator's planting clutch on / off operation.

The in-situ planting control is as follows: (1) The in-situ planting mode A is no longer selected before the elapse of a predetermined time, that is, the lever operation position of the auxiliary shift lever 100 is other than the position corresponding to the in-situ planting mode A. The fingerup lever 111a (see FIG. 11) for manually operating the elevating link mechanism 3 operated to the position was operated for planting, and (3) as the in-situ planting control monitoring timer value. The set 10 seconds have passed since the in-situ planting control was started, (4) the lever operation position of the HST lever 111 is no longer in the neutral position, and (5) the HST safety control is now executed. It is interrupted when at least one of the seven conditions (6) that the automatic ascending / descending mode of the link mechanism is no longer executed and (7) the floats 55, 56 and 57 are no longer in the grounded state is satisfied.

When the in-situ planting control is interrupted, the HST output control having the default target value ha3 corresponding to the neutral position of the opening degree of the HST trunnion shaft 112 is executed.

However, in the planting clutch mechanism 120, among the above-mentioned seven conditions, (1) the in-situ planting mode A is not selected before the elapse of a predetermined time, and (2) the finger gap lever 111a performs planting. If at least one of the two conditions that the operation was performed is satisfied, the connection is continued, but in other cases, the connection is disconnected.

When the lever operating position of the HST lever 111 is in the neutral position and the opening degree of the HST trunnion shaft 112 corresponds to the neutral position, the controller 160 ends the in-situ planting control.

By the way, in-situ planting for planting seedlings on the spot in the seedling planting tool 54 without rotating the rear wheel 11 typically does not require manual complementary seedling planting at the ridge. In order to do so, it is done before the normal planting work that accompanies the vehicle running.

However, if the position corresponding to the in-situ planting mode A is not selected as the lever operation position of the auxiliary shift lever 100 for some reason and the in-situ planting control is interrupted, there is a risk that the subsequent normal planting will not be performed. There is.

This is because, conventionally, for example, when the in-situ planting mode A is not selected before the predetermined time of 1 second elapses, the off mode is selected as the mode for transmitting the driving force to the seedling planting tool 54. This is because the planted clutch driving force transmission mode selection control is often adopted.

The auxiliary shift lever 100 is urged, and when the operator's hand is separated from the auxiliary shift lever 100, the lever operation position of the auxiliary shift lever 100 corresponds to the neutral mode C from the position corresponding to the in-situ planting mode A. It returns to the position where it does (see Fig. 4).

Therefore, when the in-situ planting mode A is selected at least until the predetermined time elapses, the output value of the HST23 is increased to the predetermined value and turned on until the predetermined time elapses. The mode is selected as the mode for transmitting the driving force to the seedling planting tool 54, but if the in-situ planting mode A is not selected before the predetermined time elapses, the output value of the HST23 is set to zero. , The on-mode is selected as it is as the driving force transmission mode to the seedling planting tool 54, and the planting clutch driving force transmission mode selection control is adopted as the planting clutch driving force transmission mode selection control of the present embodiment. Has been done.

Therefore, it is possible to suppress the occurrence of so-called idle running, in which only the vehicle running of the passenger rice transplanter 8 is carried out without being planted.

Of course, the in-situ planting mode A was selected, but even if the in-situ planting mode A was not selected before the on-mode was selected as the mode for transmitting the driving force to the seedling planting tool 54, it was turned on. An embodiment in which the mode is selected as the mode for transmitting the driving force to the seedling planting tool 54 is also conceivable.

Then, there is almost no possibility that only the vehicle of the passenger rice transplanter 8 will run without being planted.

(C) Seedling stand tilt adjustment control The seedling stand tilt adjustment control for adjusting the tilt of the seedling stand 51 will be described with reference mainly to FIG.

Here, FIG. 5 is a schematic rear view of the passenger rice transplanter 8 according to the embodiment of the present invention.

In FIG. 5, the power transmission system is shown using a solid line, the control system is shown using a dotted line, and the movement of the seedling stand 51 is shown using an arrow. ..

The seedling stand tilt detecting member 191 is a means for detecting the tilt of the seedling stand 51.

More specifically, the seedling stand tilt detecting member 191 is configured by using a slope sensor that detects the amount of rotation of the seedling stand 51 from the horizontal reference line H with respect to the field scene.

The seedling stand tilt adjusting mechanism 192 is a means for adjusting the tilt of the seedling stand 51 based on the detected tilt of the seedling stand 51.

More specifically, the seedling loading table tilt adjusting mechanism 192 is a rolling mechanism for maintaining the horizontal state of the seedling loading table 51, and the seedling loading is performed so that the detection result of the seedling loading table tilt detecting member 191 indicates the horizontal state. It is configured by using a rolling motor having a rotating actuator for rotating the base 51.

The controller 160 as an abnormality occurrence determination mechanism is a means for determining that an abnormality has occurred when the detected inclination of the seedling mounting table 51 deviates from a predetermined range until a predetermined time elapses. ..

More specifically, the controller 160 uses a timer, for example, as a slope sensor value of 8 bit A / D (Analog-to-Digital) over a predetermined time of 5 seconds, and (1) a disconnection determination value (= 7). ) When the following detection value is input, or (2) the detection value of the short determination value (= 248) or more is input, it is determined that an abnormality has occurred.

When the controller 160 determines that an abnormality has occurred, the occurrence of the abnormality is notified by the sound of a buzzer or the like, so the operator must interrupt the work and perform inspection work of the seedling loading table 51 or the like. ..

However, the operator confirms that it is determined that an abnormality has occurred even though an abnormality such as a disconnection in the slope sensor or a 5V short circuit in which the slope sensor voltage value exceeds 5V has not actually occurred. Because of this, the planting work of seedlings must be temporarily suspended, which may result in a decrease in work efficiency.

This is because, in the current configuration of the passenger rice transplanter 8, when the high-speed turning to the right is performed with the seedling stand 51 moved to the right end, it is equal to or less than the disconnection determination value or more than the short determination value. This is because the detected value may occur instantaneously.

Therefore, the abnormality occurrence determination control, such as determining that an abnormality has occurred when the detected inclination of the seedling mounting table 51 deviates from the predetermined range until the predetermined time elapses, is carried out in the present implementation. It is used as a control for determining the occurrence of abnormalities in the form.

Then, even though the abnormality has not actually occurred, it is determined that the abnormality has occurred, and there is almost no possibility that the work efficiency will be lowered as a result.

Next, the electric rear marker automatic storage and deployment control of the electric rear markers 200R and 200L for forming a linear mark as a guideline for the next planting row in the field scene will be described with reference mainly to FIGS. 6 to 8.

Here, FIGS. 6 to 8 are schematic front views (No. 1 to No. 3) of the passenger rice transplanter 8 according to the embodiment of the present invention.

In the present embodiment, the storage deployment of the electric rear markers 200R and 200L is selected as the lever operation position of the auxiliary shift lever 100, the planting travel mode B, the neutral mode C, the road traveling mode D, and the in-situ planting mode. It is automatically performed based on the position corresponding to any of A (see FIG. 4).

More specifically, it is as follows.

First, when the road traveling mode D is selected as the lever operation position of the auxiliary shift lever 100, the rotation amounts θR and θL from the reference line H of the electric rear markers 200R and 200L are approximately 90 degrees. Both the electric rear markers 200R and 200L are housed (see FIG. 6). This is because the electric rear markers 200R and 200L are not used in such a case.

Next, when the planting traveling mode B, the neutral mode C, or the in-situ planting mode A is selected as the lever operation position of the auxiliary speed change lever 100, one of the rotation amounts θR and θL is set to almost 0 degrees. One of the electric rear markers 200R and 200L is unfolded, and the other of the electric rear markers 200R and 200L is semi-expanded so that the other of the momentums θR and θL has an angle of 70 degrees (see FIG. 7). Because in such cases, one of the electric rear markers 200R and 200L is used or is about to be used to form a linear mark in the field, the other of the electric rear markers 200R and 200L is next. This is because it should be put on standby in preparation for the work of.

When the vehicle turning is detected by a vehicle turning sensor (not shown) or the like, both the electric rear markers 200R and 200L are semi-deployed so that the turning amounts θR and θL are at an angle such as 70 degrees. It may be (see FIG. 8). This is because, in such a case, the electric rear markers 200R and 200L should be put on standby for the next work.

Further, when the planting clutch mechanism 120 is connected, the electric rear markers 200R and 200L may be housed. This is because, in such a case, the seedling stand 51 may be reciprocated in the left-right direction, so that the electric rear marker 200R and the 200L water wheel blades housed in the seedling stand 51 are extended grids of the seedling stand 51. This is because it easily interferes with a part, and there is a concern that equipment damage may occur due to such interference.

Further, when (1) the edge alignment mode switch 150 is pushed down, or (2) the edge alignment control is terminated in response to the detection by the edge alignment sensor 131, the electric rear markers 200R and 200L may be stored. good. This is because the edge alignment is often performed after the planting work in which the passenger rice transplanter 8 is loaded on the loading platform of a light truck or the like is performed. Of course, the edge alignment may be performed before the planting work is performed, so that the planting clutch mechanism 120 is disconnected so that the electric rear markers 200R and 200L are not unnecessarily stored. The electric rear markers 200R and 200L may be housed only when the rear wheel pulse signal indicating the rotation state of the wheel 11 is detected.

When the left and right markers 200L and 200R are switched by depressing the seedling pedal 70, the deployment direction is not switched by another switching operation.

In addition, when the left and right markers 200L and 200R are switched by raising and lowering the seedling planting portion 4 and running backward to notify the center mascot lamp 9 by blinking, when the seedling joint pedal 70 is depressed, the left and right markers 200L, Do not switch the 200R again.

Further, when the fertilizer lamp for notifying that the fertilizer is exhausted in the fertilizer tank 60 is lit, the left and right markers 200L and 200R are not switched to be notified.

2 Traveling vehicle body 4 Seedling planting part 53 Electric motor 58 Blower 60 Fertilizer tank 61 Feeding part 62 Fertilizer application hose 63 Trial switch 68 Planting switch

Claims (3)

A fertilizer application device that sends granular fertilizer by blowing air from a blower (58) through a fertilizer application hose (62) that has passed from a feeding section (61) of a fertilizer tank (60) mounted on a traveling vehicle body (2) to a seedling planting section (4). In the passenger-type rice transplanter with
A passenger-type rice transplanter equipped with a fertilizer application device, which is provided with a trial switch (63) that drives the electric motor (53) for a blower intermittently for a predetermined time. The passenger-type rice transplanter with a fertilizer application device according to claim 1, wherein the trial switch (63) is provided in the vicinity of the feeding portion (61) of the fertilizer tank (60). The planting switch (68) for starting the drive of the seedling planting portion (4) is equipped with the fertilizer application device according to claim 1, wherein the drive on is effective under the condition that the fertilizer application switch is turned on. Passenger rice transplanter.

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