KR102282269B1 - rice transplanter - Google Patents

Abstract

The rice transplanter 1 scrapes a seedling with the planting claw 30 from the seedling mat mounted on the seedling loading stand 29, and the seedling planting apparatus 23 which plant|plants in a pavement, and the chemical|medical agent spreader which disperse|spreads a chemical|medical agent ( 400), and at the time of planting the seedling mat of high-density seedlings, and at the time of planting of the seedling mat of standard-type seedlings in which the seedlings are grown at a lower density than the seedling mat of high-density seedlings, change the drug spreading amount of the drug spreader 400 is configured to do so.

Description

rice transplanter

This invention relates to a rice transplanter provided with the seedling planting apparatus which scrapes a seedling with a planting claw from the seedling mat mounted on the seedling loading stand, and plants it in a field.

Conventionally, in the rice transplanter used for the seedling planting operation|work to a field, the seedling planting apparatus which has a seedling loading stand and the transplanting mechanism in which the planting claw was formed is attached to the rear part of a traveling body. As a transplant mechanism of a seedling planting apparatus, the type which has two planting claws in one rotary case is common. In this case, if a rotary case rotates one rotation, each two planting claws will rotate 1 reverse direction with respect to a rotary case. That is, each planting claw has a structure which rotates, revolving around the rotation axis center of a rotary case.

In the seedling planting operation, the planting claw is rotated while revolving around the axis of the rotary case while continuously transversing the seedling loading table loaded with the seedling mat at predetermined intervals, and rotating the planting claw toward the seedling loading table and the pavement surface. It is reciprocated between the two, and the seedlings are scraped from the seedling mat one week at a time and planted in the pavement.

The seedling mat used in the seedling planting operation by the rice transplanter is a rectangular seedling box with an inner diameter of about 580 mm (length) × about 280 mm (width) × about 30 mm (height). It was sown, germinated in the state covered with soil, and seeded to form a mat. As the types of seedling mats, in addition to the seedling mats of standard-type seedlings in which about 100 g to 130 g of rice seeds are sown per seedling box, the seedling amount per seedling box is 200 g to 300 g The seedling mat of a high-density seedling is known (for example, refer patent document 1).

In the seedling mat of the high-density seedling, compared with the seedling mat of the standard type seedling, the seedlings are densely grown. When using the seedling mat for high-density seedlings, the area for scraping the seedling mat with the planting claw is smaller than when using the seedling mat for standard seedlings, in order to make the number of seedlings per week that the planting claw scrapes from the seedling mat appropriately. The seedling planting conditions of a rice transplanter are set by an operator so that it loses. Thereby, the number of seedling mats required for the planting operation per unit area can be reduced, and economical efficiency is improved.

Japanese Laid-Open Patent Publication No. 2015-043731

In the rice planting operation using a seedling mat, a box application agent is spread|dispersed toward the seedling mat mounted on the seedling loading stand for the purpose of insecticide and sterilization of a seedling. However, since the density of seedlings is different between the seedling mat of high-density seedlings and the seedling mat of standard-type seedlings, if the spraying amount is set according to the seedling mat of standard-type seedlings, the seedling mats of high-density seedlings cannot be sufficiently insecticidal or sterilized, When the box application amount was set according to the seedling mat of the high-density seedling, there was a problem that an excessive amount of the chemical was dispersed in the seedling mat of the standard-type seedling.

This invention is made|formed in view of said current situation, and makes it a technical subject to implement chemical|medical agent dispersion|distribution suitably.

The rice transplanter according to the present invention is a rice transplanter equipped with a seedling planting device for scraping a seedling with a planting claw from a seedling mat mounted on a seedling loading stand and planting it in a field, and a chemical spreader for dispersing a chemical. At the time of planting of the seedling mat and the planting of the seedling mat of the standard type seedling in which the seedlings were grown at a lower density than the seedling mat of the said high-density seedling, it is comprised so that the chemical|medical agent dispersion amount of the said chemical|medical agent spreader may be changed.

In the rice transplanter of this invention, the said chemical|medical agent spreader is a structure which disperses the chemical|medical agent to the seedling mat mounted on the said seedling loading stand, When planting the seedling mat of the said high-density seedling, when planting the seedling mat of the said standard type seedling On the other hand, you may make it comprised so that the chemical|medical agent dispersion amount of the said chemical|medical agent spreader may be increased.

Moreover, the rice transplanter of this invention WHEREIN: You may make it the said chemical|medical agent spreader spread|dispersing a chemical|medical agent to the groove|channel cut to the said pavement with the tooling machine formed in the said seedling planting apparatus.

The rice transplanter of the present invention is a rice transplanter equipped with a seedling planting device for scraping a seedling with a planting claw from a seedling mat placed on a seedling loading stand and planting it in a field, and a chemical spreader for dispersing a chemical, High-density seedlings of seedlings At the time of planting of the mat and the planting of the seedling mat of the standard type seedling in which the seedlings were grown at a lower density than the seedling mat of the high-density seedling, it is constituted so as to change the amount of drug spread in the drug spreader. At the time of planting of the bush and the seedling mat of the standard type seedling, the chemical dispersion amount can be made different, and the chemical|medical agent of the appropriate dispersion amount can be spread|dispersed according to the seedling mat of a high-density seedling and the seedling mat of a standard type seedling, respectively.

In the rice transplanter of the present invention, the drug spreader is a configuration for dispersing a drug to the seedling mat placed on the seedling loading stand, and when planting the seedling mat of the high-density seedling, when planting the seedling mat of the standard seedling On the other hand, since it is configured to increase the amount of drug spread in the drug spreader, sufficient insecticide and sterilization of seedlings in the seedling mat of high-density seedlings can be performed at the time of planting operation using the seedling mat of high-density seedlings, , it is possible to realize the healthy growth of seedlings planted in the field.

In the rice transplanter of the present invention, the drug spreader is to spread the drug to the grooves made in the pavement by the chopper formed in the seedling planting device, and to the seedling mat of high-density seedlings and the seedling mat of standard-type seedlings. An appropriate amount of each drug may be dispersed in the package. In the rice transplanter of this aspect, a chemical|medical agent spreader disperse|distributes a chemical|medical agent to the package instead of a seedling mat. Therefore, in the rice transplanter of this aspect, the upper limit is formed in the chemical|medical agent dispersion amount per one seedling mat, and even if it is a case where an appropriate amount of chemical|medical agent cannot be spread|dispersed with respect to the seedling mat of a high-density seedling on a seedling loading stand, high-density seedling seedling mat At the time of planting, an appropriate amount of the drug can be dispersed in the packaging. Here, the amount of chemical dispersion per unit area dispersed in the field at the time of planting the seedling mat of the high-density seedling may be smaller or larger than that of the seedling mat of the standard seedling.

BRIEF DESCRIPTION OF THE DRAWINGS It is a left side view of the riding type rice transplanter in embodiment.
Figure 2 is a plan view of the riding-type rice transplanter.
It is a left side view which shows the positional relationship of an engine, a transmission case, and a rear axle case.
4 is a plan view showing the positional relationship between the engine, the transmission case, and the rear axle case.
5 is a plan view of a driving operation unit omitting the steering wheel;
6 is a drive system diagram of a riding-type rice transplanter.
7 is a hydraulic circuit diagram of a riding type rice transplanter.
It is a left side view of a seedling planting apparatus.
It is a front view of a seedling planting apparatus.
It is a top view of a seedling planting apparatus.
It is a top view for demonstrating the periphery of a planting depth adjustment axis and a seedling extraction adjustment axis.
Fig. 12 is a left sectional view for explaining the adjustment of the seedling vertical take-out amount.
13 is a front perspective view for explaining an actuator mechanism cover;
It is a perspective view for demonstrating a planting depth adjustment actuator mechanism.
It is a right side view for demonstrating operation|movement of a planting depth adjustment actuator mechanism.
It is a perspective view for demonstrating the seedling taking-out control actuator mechanism.
It is a left side view for demonstrating the operation|movement of a seedling take-out control actuator mechanism.
It is a top view for demonstrating a raising/lowering sensor mechanism and a surface detection sensor mechanism.
It is a left side for demonstrating a raising/lowering sensor mechanism and a surface detection sensor mechanism.
20 is a rear view of the box application sprayer.
21 is a left side view of the box application sprayer.
22 is a side cross-sectional view of the dispensing unit;
23 is a side cross-sectional view of the periphery of the dispersion amount adjusting mechanism and the one-way clutch mechanism;
Fig. 24 is a plan view of the periphery of the seedling outlet;
25 is a plan view of an implantation instrument.
26 is a left side view of the implantation instrument.
It is a rear view which shows the planting claw guide structure.
It is an exploded perspective view of a planting claw guide structure.
29 : is a figure which shows the outlet cover and the planting claw guide, (A) shows the outlet cover for high-density seedlings, (B) shows the outlet cover for standard type seedlings.
It is an exploded perspective view which shows the attachment/detachment structure of a planting claw and an extrusion piece.
Fig. 31 is a front view, a plan view, and a left view of a planting claw, an extruded piece and a push rod, in which (A) shows for high-density seedlings, (B) shows for standard-type seedlings.
Fig. 32 is a front view, a plan view, a left view and a right view of the extruded piece cover;
It is a schematic functional block diagram regarding seedling planting control.
34 is a view showing an example of a selection item displayed on a liquid crystal panel.
It is a flowchart for demonstrating one Embodiment of setting of seedling planting conditions, and seedling planting control.
It is a flowchart for demonstrating other embodiment of setting of seedling planting conditions, and seedling planting control.
It is a flowchart for demonstrating embodiment of setting of seedling planting conditions, and box application agent dispersion|distribution control.
Fig. 38 is a rear view of the drug dispenser.
Fig. 39 is a left side view of the drug dispenser.
Fig. 40(A) is a schematic diagram showing the display state of the liquid crystal panel after the dense seeding mode is selected, and Fig. 40(B) is a schematic diagram showing the display state of the liquid crystal panel when the standard mode is selected.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment which embodied this invention is demonstrated based on drawing at the time of applying to the riding type rice transplanter 1 (henceforth simply referred to as rice transplanter 1) of an 8 row planting type. In addition, in the following description, toward the advancing direction of the traveling body 2, the left is simply called the left, and similarly, the right is simply called the right toward the advancing direction.

First, the outline|summary of the rice transplanter 1 is demonstrated, referring FIGS. The rice transplanter 1 of the embodiment includes a traveling body 2 supported by a pair of left and right front wheels 3 and a pair of left and right rear wheels 4 as a traveling unit. The engine 5 is mounted on the front part of the traveling body 2 . Power from the engine 5 is transmitted to the rear transmission case 6 to drive the front wheels 3 and the rear wheels 4, so that the traveling body 2 is configured to travel forward and backward. The front axle case 7 protrudes from the left and right sides of the transmission case 6, and the front axle 3 is steerably mounted on the front axle 36 extending from the front axle case 7 in the left and right outward directions. . A cylindrical frame 8 is protruded from the rear of the transmission case 6, and the rear axle case 9 is fixedly formed on the rear end side of the cylindrical frame 8, and the rear axle case ( 9) A rear wheel 4 is mounted on a rear axle 37 extending in the left and right outward directions.

1 and 2 , on the upper surface side of the front part and the central part of the traveling body 2, the operation step (body cover) 10 for operator boarding is provided. The front bonnet 11 is arrange|positioned above the front part of the work step 10, and the engine 5 is installed in the inside of the front bonnet 11. As shown in FIG. A traveling shift pedal 12 for stepping operation is disposed on the rear side of the front bonnet 11 among the upper surfaces of the work step 10 . Although details are abbreviate|omitted, the rice transplanter 1 of embodiment is the drive of the speed change electric motor according to the step amount of the travel speed change pedal 12, and the shift power output from the hydraulic continuously variable transmission 40 of the transmission case 6 is It is designed to be adjusted.

Further, in the driving operation unit 13 on the upper surface side of the rear portion of the front bonnet 11, a control handle 14, a traveling main gear lever 15, and a working lever 16 as a lifting operation tool are formed (Fig. 5). The steering seat 18 is arrange|positioned via the seat frame 17 behind the front bonnet 11 among the upper surfaces of the work step 10. As shown in FIG. Moreover, in the left and right sides of the front bonnet 11, the spare seedling mounting stand 24 on either side is formed with the work step 10 interposed therebetween.

A link frame 19 is formed standing up at the rear end of the traveling body 2 . The seedling planting apparatus 23 for 8 rows planting is connected to the link frame 19 via the raising/lowering link mechanism 22 which consists of the lower link 20 and the top link 21 so that raising/lowering is possible. In this case, the hitch bracket 38 is formed in the front surface side of the seedling planting apparatus 23 via a rolling fulcrum axis (not shown). By connecting the hitch bracket 38 to the rear part side of the raising/lowering link mechanism 22, the seedling planting apparatus 23 is arrange|positioned in the back of the traveling body 2 so that raising/lowering is possible. The cylinder base end side of the hydraulic lifting/lowering cylinder 39 (hydraulic lifting/lowering control mechanism) is supported by the upper surface rear part of the normal flame|frame 8 so that an up-down rotation is possible. The rod tip side of the lifting cylinder 39 is connected to the lower link 20 . As a result of vertically rotating the raising/lowering link mechanism 22 by the expansion/contraction movement of the raising/lowering cylinder 39, the seedling planting apparatus 23 goes up and down. Moreover, the seedling planting apparatus 23 rotates around the said rolling fulcrum axis, and is comprised so that the inclination posture of a left-right direction can be changed.

An operator drives the seedling planting apparatus 23, and drives the seedling planting apparatus 23, boarding on the work step 10 from the raising/lowering step 25 in the side of the work step 10, and moving the inside of a field by driving operation, and puts a seedling into a field. A seedling planting operation (rice planting operation) to be planted is performed. Moreover, in the seedling planting operation|work, an operator supplies the seedling mat on the preliminary|backup seedling loading stand 24 to the seedling planting apparatus 23 at any time.

1 and 2, the seedling planting apparatus 23 to the planting input case 26 and the planting input case 26 to which the motive power which passed through the transmission case 6 is transmitted from the engine 5 The planting transmission case 27 of 4 sets (1 set by 2 sets) of 8 groups to connect, the seedling planting mechanism 28 formed in the rear end side of each planting transmission case 27, and the seedling loading stand for 8 rows planting ( 29) and the float 32 for non-bottom leveling arrange|positioned at the lower surface side of each planting transmission case 27 is provided. In the seedling planting mechanism 28, the planting transmission case 27 which has the two planting claws 30 for 1 set is formed. The planting transmission case 27 for two sets is arrange|positioned by the planting transmission case 27. By one rotation of the output shaft of the planting transmission case 27, the two planting claws 30 cut out and hold the seedling of each 1 week, respectively, and plant it in the rice paddy ground stopped by the float 32. On the front surface side of the seedling planting apparatus 23, the stationary rotor 85 which makes a pavement level even (stops) is formed so that raising/lowering is possible. As shown in FIG. 20, in the seedling planting apparatus 23, the box application agent spreader (medical agent spreader) 400 which disperse|distributes the box application agent to the seedling mat mounted on the seedling loading stand 29 is provided. .

Although detailed later, the motive power which passed through the transmission case 6 from the engine 5 is not only transmitted to the front wheel 3 and the rear wheel 4, but the planting input case 26 of the seedling planting apparatus 23 ) is also transmitted. In this case, the motive power which goes to the seedling planting apparatus 23 from the transmission case 6 is once transmitted to the weekly shift case 75 formed in the upper right side of the rear axle case 9, and the weekly shift case 75 Power is transmitted from ) to the planting input case 26. Each seedling planting mechanism 28 and the seedling loading stand 29 drive with the said transmitted motive power. Power to the weekly transmission mechanism 76 and the seedling planting apparatus 23 which switch the week of the seedling to be planted in the weekly transmission case 75, for example to a news, a standard type, or a dense type, etc. The planting clutch 77 which steps transmission is incorporated (refer FIG. 6).

Moreover, the line marker 33 is provided in the right and left outer side of the seedling planting apparatus 23. The line marker 33 has a marker ring body 34 for drawing a line, and a marker arm 35 that rotatably supports the marker ring body 34 . The base end side of each marker arm 35 is pivotally supported by the left and right outer sides of the seedling planting apparatus 23 so that left and right rotation is possible. The line marker 33 includes a working posture formed by landing on the paddy field to form a trajectory that serves as a reference in the next step based on the operation of the work lever 16 in the driving operation unit 13, It is constructed so that it can be rotated in a non-working posture separated from the paddy field by raising it.

As shown in FIG.3 and FIG.4, the traveling body 2 is equipped with the body frame 50 of a pair of right and left extended back and forth. Each body frame 50 is divided into two into a front frame 51 and a rear frame 52 . The rear end of the front frame 51 and the front end of the rear frame 52 are fixed by welding to the horizontally long intermediate connecting frame 53 . The front ends of the pair of left and right front part frames 51 are welded and fixed to the front frame 54 . The rear end sides of the pair of left and right rear part frames 52 are welded and fixed to the rear frame 55 . The front frame 54, the left and right both front frame 51 and the intermediate connecting frame 53 are comprised in the planar view square frame shape. Similarly, the intermediate connection frame 53, the both left and right rear part frames 52, and the rear frame 55 are also comprised in the planar view square frame shape.

As shown in FIG. 4 , the front and rear portions of the right and left front frame 51 are connected by two front and rear base frames 56 . The middle portion of each of the base frames 56 is formed in a shape bent in a U shape so as to be positioned lower than the left and right front portion frames 51 . The left and right ends of each base frame 56 are welded and fixed to the corresponding front frame 51 . The engine 5 is mounted on both front and rear base frames 56 and supported by vibration-proof support via a substantially flat engine base 57 and a plurality of vibration-proof rubbers (not shown). The rear base frame 56 is connected to the front part of the transmission case 6 via the rear relay bracket 60 .

As can be seen from FIG. 4 , the parts near the rear of both the left and right front part frames 51 are connected to the front axle case 7 protruding from the left and right sides of the transmission case 6 . On the central side of the intermediate connecting frame 53, both ends of the U-shaped frame 61 extending in the rear-oblique downward direction when viewed from the side are fixed by welding. The middle part of the U-shaped frame 61 is connected to the middle part of the normal frame 8 which connects the transmission case 6 and the rear axle case 9 (refer FIGS. 3 and 4). The upper end side of the two vertical frames 62 on the right and left is fixed by welding to the middle part of the rear frame 55 . The middle part of the rear axle support frame 63 long horizontally is welded and fixed to the lower end side of the right and left vertical frame 62. Both left and right ends of the rear axle support frame 63 are connected to the rear axle case 9 . Further, a muffler 65 for reducing exhaust sound of the engine 5 is disposed below the step support 64 protruding outwardly from the left front frame 51 .

3 and 4 , a power steering unit 66 is formed in a front portion of the transmission case 6 disposed at the rear of the engine 5 . Although details are omitted, the handle shaft is rotatably disposed inside the handle post formed standing up on the upper surface of the power steering unit 66 . A steering handle 14 is fixed to the upper end of the handle shaft. A steering output shaft (not shown) protrudes downwardly on the lower surface side of the power steering unit 66 . The steering shaft 68 (refer FIG. 4) which steers the left and right front wheels 3 is connected to the said steering output shaft, respectively.

The engine 5 of the embodiment is disposed on the intermediate portion of the front and rear both base frames 56 with the output shaft 70 (crankshaft) oriented in the left-right direction. The left and right widths of the engine 5 and the engine stand 57 are smaller than the inner dimension between the left and right both front frame 51 , and the lower side of the engine 5 and the engine stand 57 are of the front and rear both base frames 56 . In the state arranged on the middle part, it is exposed below the left and right both front part frames 51 . In this case, the output shaft 70 (axis line) of the engine 5 is in the position which overlaps with the right and left front part frame 51 in side view. An exhaust pipe 69 communicating with the exhaust system of the engine 5 is disposed on one left and right side surface (left side surface in the embodiment) of the engine 5 . The proximal end side of the exhaust pipe 69 is connected to each cylinder of the engine 5 , and the distal end side of the exhaust pipe 69 is connected to the exhaust inlet side of the muffler 65 .

In the driving operation unit 13 shown in FIG. 5 , the driving main gear lever 15 is located on the left and right one side (the left side in the embodiment) with the steering wheel 14 interposed therebetween. By operating the driving main gear lever 15 along the guide groove 83 formed in the driving operation unit 13, the driving mode of the rice transplanter 1 is switched to each mode of forward, neutral, reverse, seedling replenishment and movement. composing The work lever 16 is located on the other left and right side (the right side in the embodiment) with the control handle 14 interposed therebetween. The work lever 16 bears several operation independently of the raising/lowering operation of the seedling planting apparatus 23, the step operation of the planting clutch 77, and the selection operation of the right and left line marker 33, and is operated crosswise. made possible.

In this case, when the work lever 16 is operated forward once, the seedling planting apparatus 23 will fall, and when it is operated forward once again, the planting clutch 77 will operate (it will be a power connection state). . Conversely, when the work lever 16 is operated rearwardly once, the planting clutch 77 will operate off (it will be in a power cutoff state), and when a rearward operation is performed once again, the seedling planting apparatus 23 will rise. When canceling the raising/lowering operation|movement of the seedling planting apparatus 23, the work lever 16 is tilted to a reverse direction. For example, when stopping the descending movement of the seedling planting apparatus 23 on the way, what is necessary is just to operate the work lever 16 backward. When the work lever 16 is tilted to the left once, the left line marker 33 becomes the working posture, and when the work lever 16 is tilted to the left once again, the left line marker 33 returns to the non-working posture. When the work lever 16 is tilted to the right once, the right line marker 33 becomes the working posture, and when the work lever 16 is tilted to the right once again, the right line marker 33 returns to the non-working posture.

Next, the drive system of the rice transplanter 1 is demonstrated, referring FIG. The output shaft 70 of the engine 5 projects outwardly from both left and right side surfaces of the engine 5 . The engine output pulley 72 is formed at the protruding end of the output shaft 70 protruding from the left side of the engine 5, and the transmission input pulley 73 is disposed on the transmission input shaft 71 protruding from the transmission case 6 to the left outward. to form, and the transmission belt is wound around both pulleys (72, 73). Power is transmitted from the engine 5 to the transmission case 6 via both pulleys 72 and 73 and the transmission belt.

In the transmission case 6, a hydraulic continuously variable transmission 40 comprising a hydraulic pump 40a and a hydraulic motor 40b, a planetary gear unit 41, a hydraulic continuously variable transmission 40 and a planetary gear unit 41 are passed through. A gear-type auxiliary transmission mechanism 42 for shifting one shifting power to a plurality of stages, a main clutch 43 for stepping power transmission from the planetary gear device 41 to the gear-type auxiliary transmission mechanism 42, and a gear-type part A traveling brake 44 or the like for braking the output from the transmission mechanism 42 is provided. The hydraulic pump 40a is driven by the power from the transmission input shaft 71, hydraulic oil is supplied from the hydraulic pump 40a to the hydraulic motor 40b, and shift power is output from the hydraulic motor 40b. The shift power of the hydraulic motor 40b is transmitted to the gear-type auxiliary transmission mechanism 42 via the planetary gear device 41 and the main clutch 43 . And from the gear-type auxiliary transmission mechanism 42, it branches to 2 directions of the front-back wheel 3 and 4 and the seedling planting apparatus 23, and power is transmitted.

A part of the branching power directed to the front and rear wheels 3 and 4 is transmitted from the gear-type auxiliary transmission mechanism 42 through the differential gear mechanism 45 to the front axle 36 of the front axle case 7, left and right The front wheel 3 is rotationally driven. The remainder of the branch power directed to the front and rear wheels 3 and 4 is from the gear-type auxiliary transmission mechanism 42, a free joint shaft 46, a rear drive shaft 47 in the rear axle case 9, left and right 1 It is transmitted to the rear axle 37 of the rear axle case 9 via the pair of friction clutch 48 and the gear reduction mechanism 49 to rotationally drive the left and right rear wheels 4 . When the travel brake 44 is actuated, the output from the gear-type auxiliary transmission mechanism 42 disappears, and therefore both the front and rear wheels 3 and 4 are braked. Moreover, when turning the rice transplanter 1, the friction clutch 48 inside the turning in the rear axle case 9 is turned off, the rear wheel 4 inside a turning is made to rotate freely, and power is transmitted. It turns by rotational driving of the rear wheel 4 .

In the rear axle case 9 , a rotor drive unit 86 having a stationary rotor clutch for power steps to the stationary rotor 85 is provided. Power transmitted from the gear-type auxiliary transmission mechanism 42 to the joint shaft 46 is also branched and transmitted to the rotor drive unit 86, and from the rotor drive unit 86 through the joint shaft 87 to a stationary rotor Power is transmitted to (85). The pavement surface is leveled by rotational driving of the stationary rotor 85 .

The branching motive power which goes to the seedling planting apparatus 23 is transmitted to the weekly transmission case 75 via the PTO transmission shaft mechanism 74 with a free joint shaft formed. In the weekly transmission case 75, the weekly transmission mechanism 76 for switching the week of the seedling to be planted to, for example, a news, a standard type, or a compact type, and a planting clutch that steps transmission of power to the seedling planting apparatus 23 ( 77) is provided. The motive power transmitted to the weekly transmission case 75 is transmitted to the planting input case 26 via the weekly transmission mechanism 76, the planting clutch 77, and the free joint shaft 78.

In the planting input case 26, the seedling stand lateral feed mechanism 79 which horizontally feeds the seedling loading stand 29, and the seedling vertical feed mechanism 80 which vertically feeds and conveys the seedling mat on the seedling loading stand 29. ) and the planting output shaft 81 which transmits power from the planting input case 26 to each planting transmission case 27 is provided. By the motive power transmitted to the planting input case 26, the seedling stand lateral feed mechanism 79 and the seedling vertical feed mechanism 80 drive, the seedling loading stand 29 is continuously reciprocally traversed and moved, and a seedling When the mounting table 29 arrives at the reciprocating end (return point of reciprocation), the seedling mat on the seedling mounting table 29 is intermittently vertically transferred and conveyed. The motive power which passed through the planting output shaft 81 from the planting input case 26 is transmitted to each planting transmission case 27, and rotates the planting transmission case 27 and the planting claw 30 of each planting transmission case 27. drive it In addition, when forming a fertilization apparatus, power is transmitted from the weekly shift case 75 to a fertilization apparatus.

Inside the planting input case 26, the intermediate shaft 211 of the left-right length and the seedling loading stand drive shaft 212 are arrange|positioned in parallel form. The motive power transmitted to the planting input case 26 is transmitted to the seedling stand horizontal transfer mechanism 79 and the seedling length transfer mechanism 80 via the intermediate shaft 211 and the seedling loading stand drive shaft 212 . A plurality of transverse feed control driven gears 214 are fixed to the seedling loading table drive shaft 212, while a transverse feed control driving gear 213 corresponding to the transverse feed control driven gear 214 is provided on the intermediate shaft 211. is fitted loosely. It is selective from the intermediate shaft 211 by the slide key 215 which can slide with the slide lever (not shown) formed in the planting input case 26 only in any one of the several sheets of transverse feed control drive gear 213 Power is transmitted to the seedling loading table drive shaft 212 to rotate.

Each set of the transverse feed control gears 213 and 214 has a different ratio of the number of teeth, respectively, and when the combination of the transverse feed control gears 213 and 214 is changed, the rotation ratio of the seedling loading table drive shaft 212 is changed . As a result, the lateral feed pitch of the seedling loading stand 29 changes, and the scraping amount of the seedling of a seedling mat changes. In the embodiment, there are four types of combinations of the transverse feed adjustment gears 213 and 214, and the number of transverse feeds is set to any of 18, 20, 26, and 30 times. Here, the frequency|count of horizontal feeding means the frequency|count that the two planting claws 30 scrape a seedling from a seedling mat for 1 set, while horizontally feeding the seedling loading stand 29 to any moving end left and right. The combination of the transverse feed adjustment gears 213 and 214 corresponding to 30 transverse feed times is applied in the case of using a seedling mat of high-density seedlings.

Next, the hydraulic circuit structure of the rice transplanter 1 is demonstrated, referring FIG. The hydraulic circuit 90 of the rice transplanter 1 is provided with the hydraulic pump 40a and hydraulic motor 40b which are components of the hydraulic continuously variable transmission 40, and the charge pump 91 and the work pump 92. The hydraulic pump 40a, the charge pump 91 and the working pump 92 are driven by the power of the engine 5 . The hydraulic pump 40a and the hydraulic motor 40b are respectively connected to the suction side and the discharge side via a closed-loop flow path 93 . The charge pump 91 is connected to the closed-loop flow path 93 . It is comprised so that the swash plate angle of the hydraulic pump 40a may be adjusted by the drive of the variable speed electric motor according to the step amount of the travel speed pedal 12, and the hydraulic motor 40b may be driven positively or reversely. .

The work pump 92 is connected to a power steering unit 66 that assists in the operation of the steering wheel 14 . The power steering unit 66 includes a steering hydraulic pressure switching valve 94 and a steering hydraulic motor 95 . By operating the steering wheel 14 , the steering hydraulic pressure switching valve 94 is switched to drive the steering hydraulic motor 95 , thereby assisting the operation of the steering wheel 14 . As a result, the left and right front wheels 3 can be easily steered with a small operating force.

The power steering unit 66 is connected to the flow divider 96 . The flow divider 96 is branched into a first flow path 97 and a second flow path 98 . The 1st flow path 97 is connected to the raising/lowering switching valve 99 which supplies hydraulic oil to the raising/lowering cylinder 39. As shown in FIG. The raising/lowering switching valve 99 is a 4-port 2-position switchable into 2 positions: a supply position 99a which supplies hydraulic oil to the raising/lowering cylinder 39, and a discharge position 99b which discharges hydraulic oil from the raising/lowering cylinder 39. It is a switching type mechanical switching valve. The seedling planting apparatus 23 moves up and down via the raising/lowering link mechanism 22 by switching the raising/lowering switching valve 99 by operation of the work lever 16 and making the raising/lowering cylinder 39 expand/contract. Moreover, the flow divider 96 and the raising/lowering switching valve 99 are accommodated in the valve unit 89 provided in the transmission case 6 rear part.

The electromagnetic on/off valve 101 is provided in the cylinder flow path 100 from the raising/lowering switching valve 99 to the raising/lowering cylinder 39. As shown in FIG. The electromagnetic on/off valve 101 is switchable into two positions: an open position 101a for supplying/discharging hydraulic oil to and from the lifting cylinder 39, and a closed position 101b for stopping supply/discharge of hydraulic oil to and from the lifting cylinder 39. It is an electronic control valve. Therefore, when the electromagnetic solenoid 102 is excited and the electromagnetic on-off valve 101 is made into the open position 101a, the raising/lowering cylinder 39 will be able to expand and contract, and the seedling planting apparatus 23 will be able to lift and lower. When the electromagnetic solenoid 102 is de-energized and the solenoid on/off valve 101 is set to the closed position 101b by the return spring 103, the lifting cylinder 39 is held in a non-expandable motion, and the seedling planting device 23 ) stops lifting and lowering at any height position.

In addition, between the electromagnetic on-off valve 101 and the lifting cylinder 39 in the cylinder flow path 100 , an accumulator 105 is connected via an accumulator flow path 104 . At the time of abrupt operating hydraulic pressure fluctuations in the lifting cylinder 39, the accumulator 105 absorbs the operating hydraulic pressure fluctuations, and the lifting cylinder 39 is closed by the combination of the lifting switching valve 99 and the electromagnetic on/off valve 101 It is made to expand and contract smoothly, and the seedling planting apparatus 23 is raised and lowered lightly.

The 2nd flow path 98 of the flow divider 96 is connected to the rolling control unit 106 which controls the left-right inclination attitude|position of the seedling planting apparatus 23. The rolling control unit 106 incorporates an electromagnetic control valve 107 that supplies hydraulic oil to the rolling cylinder 108 . As a result of operating the rolling cylinder 108 integrally formed in the rolling control unit 106 by the switching operation|movement of the electromagnetic control valve 107, the seedling planting apparatus 23 is hold|maintained in a horizontal attitude|position. Moreover, the hydraulic circuit 90 of the rice transplanter 1 is also equipped with a relief valve, a flow volume control valve, a check valve, an oil filter, etc.

Next, with reference to FIGS. 8-11, the structure of the seedling planting apparatus 23 is demonstrated. The seedling planting apparatus 23 is equipped with the planting frame 111 which connects between the front ends of the planting transmission case 27 of 4 sets of 8 groups. The planting frame 111 is extended and formed in the left-right direction. The planting input case 26 is attached to the center part of the planting frame 111. The planting input case 26 performs the horizontal feed shaft of the seedling stand horizontal feed mechanism 79 which performs the horizontal feed of the left-right direction of the seedling loading stand 29, and vertical feed of the seedling on the seedling loading stand 29. The vertical feed drive shaft 80a of the seedling vertical feed mechanism 80 to do, and the planting output shaft 81 of the seedling planting mechanism 28 are rotated.

The planting depth adjustment shaft 121 is pivoted so that the front-end part lower side of the planting transmission case 27 can rotate freely. Bracket 113a, 113b arrange|positioned to the planting depth adjustment shaft 121 on each float 32a, 32b rear end upper surface is connected via planting depth adjustment link 114a, 114b. Moreover, the proximal end of the planting depth adjustment member 122 which adjusts the reference|standard planting depth is adhering to the planting depth adjustment shaft 121. The planting depth adjustment member 122 is rotated by the planting depth adjustment actuator mechanism mentioned later making the planting depth adjustment shaft 121 a rotation support point, and is position-adjusted. By position-adjusting the planting depth adjustment member 122, the height position of brackets 113a, 113b through the planting depth adjustment shaft 121 and planting depth adjustment link 114a, 114b, and also float 32a, 32b Control target) is placed at the desired planting depth set height. The sensing arm of the elevation sensor mechanism 311 is attached to the front end of the center float 32a. The raising/lowering sensor mechanism 311 detects the change of a float inclination angle (planting depth). Above the center float 32a, the surface detection sensor mechanism 331 attached to the front surface of the planting frame 111 is arrange|positioned. The surface detection sensor mechanism 331 detects a change in the surface position of the pavement. A float melting mechanism 116 is attached to the front end of the side float 32b for regulating the vertical movement range of the front end of the side float 32b.

Next, the rolling control device 109 is demonstrated. As shown in FIG. 9, the lower end of the hitch bracket 38 is connected with the support point member 141 fixedly formed in the planting frame 111 substantially center via the rolling support point shaft 142 so that it can rotate freely. A hydraulic rolling cylinder 108 is mounted on a mounting seat 143 formed on the upper end side of the hitch bracket 38 . A front end of the piston rod 145 of the cylinder 108 is connected to a fixing bracket 147 mounted on a rolling arm 146 . A rolling control unit 106 for reciprocally driving the double-acting cylinder 108 is integrally formed with the cylinder 108 . A pair of spring hooks formed on the receiving plate 148 fixed to the upper surface of the mounting sheet 143 and the upper rail frame 151 on the back side of the seedling loading table 29 with the center of the upper rail frame 151 interposed therebetween. In between, a rolling compensation spring 149 is provided. When a pendulum-type rolling sensor (not shown) detects the inclination of the seedling planting apparatus 23, it controls the piston rod 145 of the cylinder 108 forward and backward, and the seedling planting apparatus 23 around the rolling fulcrum axis 142. ) is rocked from side to side, and it is comprised so that horizontal maintenance of the seedling planting apparatus 23 may be aimed at.

Moreover, the seedling stand horizontal feeding mechanism 79 and the seedling vertical feeding mechanism 80 are connected to the planting input case 26. As shown in FIG. The transfer body 79a of the seedling stand horizontal transfer mechanism 79 is connected to the lower back side of the seedling loading stand 29, and the seedlings in the left and right width direction along the upper rail frame 151 and the lower rail frame 152 The loading table 29 is moved horizontally. For this reason, the seedling mat on the seedling loading stand 29 is horizontally conveyed and conveyed continuously reciprocally.

On the other hand, a pair of longitudinal feed drive cams 80b are being fixed to the longitudinal feed drive shaft 80a of the seedling longitudinal feed mechanism 80. As shown in FIG. When the seedling loading table 29 reaches the reciprocating end (return point of reciprocation), each longitudinal feed driving cam 80b rotationally driven by the longitudinal feed driving shaft 80a hits the tip of the driven cam 153. It touches and rotates the driven cam (153). Thereby, the seedling vertical feeding belt 155 in the endless belt shape is intermittently driven, and the seedling mat on the seedling loading stand 29 is intermittently vertically fed and conveyed toward the seedling takeout side (the inclined lower end side of the seedling loading table 29).

The seedling longitudinal feed belt 155 includes a vertical feed drive roller mounted on a horizontally long vertical feed roller shaft 154 formed on the lower end side of the seedling loading table 29 , and a middle section of the seedling loading table 29 . It is wound around the longitudinal feed driven roller mounted on the left and right horizontally long longitudinal feed driven roller shaft 157 formed in the part. By placing two rectangular seedling mats in series on the seedling mat loading surface of the seedling loading table 29, and intermittently driving the seedling vertical conveying belt 155, the inclined lower side of the seedling mat loading surface of the seedling loading table 29 The seedling mat is vertically transferred and conveyed toward (the seedling taking-out side). The length of the seedling transfer working surface of the seedling longitudinal transfer belt 155 is longer than the length of one seedling mat. In addition, the seedling take-out interlocking cam 138 fixed to the seedling take-out control shaft 136 and the driven cam 153 mounted on the vertical feed driving roller shaft 154 are connected through the interlocking wire 156, In response to the change in the vertical take-out amount, the seedling longitudinal feed amount is also changed, and an appropriate seedling vertical feed is performed according to the seedling longitudinal take-out amount.

Moreover, as shown in FIG. 12, in the seedling planting apparatus 23, the seedling take-out control tool 132 which makes the seedling take-out board 131 of the lower end of the seedling loading stand 29 move up and down, and adjusts the seedling vertical taking-out amount is formed. has been The seedling take-out control tool 132 is being fixed to the guide rod 134 upper part supported by the guide member 133 bolted to the planting transmission case 27 so that it could vertically move freely. The base end of the seedling take-out control cam 135 is fixed to the seedling take-out control shaft 136 extended in the left-right direction. The tip of the seedling take-out control cam 135 is inserted into the seedling take-out control tool 132 . Moreover, the base end of the seedling take-out control member 137 is being fixed to the seedling take-out control shaft 136. As shown in FIG. The seedling take-out control member 137 is positionally adjusted by the seedling take-out control actuator mechanism 181 to be described later, so that the seedling take-out control shaft 136 and the seedling take-out control cam 135 pass through the seedling take-out plate 131 and the seedling take-out The adjustment tool 132 and the guide rod 134 move up and down, and adjustment of the seedling quantity for 1 share which the planting claw 30 takes out is performed. The seedling taking-out adjustment shaft 136 is supported so that it can rotate freely by each bearing plate fixed and formed in the planting transmission case 27 upper part.

Next, the structure of the adjustment actuator mechanism group 161 which has the planting depth adjustment actuator mechanism 171 and the seedling extraction adjustment actuator mechanism 181 is demonstrated, referring FIGS. 13-17. The adjustment actuator mechanism group 161 is equipped with the planting depth adjustment actuator mechanism 171, the seedling taking-out adjustment actuator mechanism 181, and the actuator mechanism cover 162. The adjustment actuator mechanism group 161 is attached to the planting frame 111 in the left side position rather than the rolling fulcrum axis 142. In the adjustment actuator mechanism group 161, the adjustment actuator mechanisms 171 and 181 are arranged adjacent to each other in the left-right direction. The seedling taking-out adjustment actuator mechanism 181 is arrange|positioned rather than the planting depth adjustment actuator mechanism 171 at the traveling body 2 center side.

The planting depth adjustment actuator mechanism 171 and the seedling taking-out adjustment actuator mechanism 181 have basically the same structure. The adjustment actuator mechanism (171, 181) includes a feed screw (172, 182), a slider (173, 183), an electric adjustment motor (174, 184), a feed screw upper support member (175, 185), Feed screw lower support members 176 and 186 are provided. By rotating the feed screws 172 and 182 by the adjusting motors 174 and 184, the sliders 173 and 183 are linearly moved on the feed screws 172, 182. The feed screw upper support members 175 and 185 freely rotatably support the upper end sides (regulating motor side) of the feed screws 172 and 182 . The feed screw lower support members 176 and 186 support the lower ends of the feed screws 172 and 182 rotatably. Further, the adjustment actuator mechanisms 171 and 181 may be configured with a hydraulic motor for rotating the feed screws 172 and 182 instead of the electric adjustment motors 174 and 184 .

The actuator mechanism cover 162 is provided with a slider anti-rotation groove 164d opened along the feed screw 172 and a slider anti-rotation groove 164e opened along the feed screw 182 . The rotation preventing projections 173a and 183a of the sliders 173 and 183 are inserted into the slider rotation preventing grooves 164d and 164e.

The operation of the planting depth adjustment actuator mechanism 171 is demonstrated, referring FIGS. 14 and 15 . The planting depth adjustment member 122 mentioned above is connected with the slider 173 of the planting depth adjustment actuator mechanism 171 via a fusion mechanism. The front-end|tip part of the planting depth adjustment member 122 by which a base end part adhered to the planting depth adjustment shaft 121 is arrange|positioned in the planting depth adjustment actuator mechanism 171 right vicinity from the upper side of the planting frame 111. The base end of the rod-shaped member 123 extended forward downward is attached to the front-end|tip part of the planting depth adjustment member 122. The pin member 124 protruded to the planting depth adjustment actuator mechanism 171 side is attached to the front-end|tip part of the rod-shaped member 123. On the other hand, the slider 173 is equipped with an engaging member 173b having a groove into which the tip end of the pin member 124 is engaged. In this way, the slider 173 of the planting depth adjustment actuator mechanism 171, and the planting depth adjustment member 122 are connected.

The planting depth adjustment actuator mechanism 171 is driven by the planting depth adjustment motor 174 according to the set planting depth adjusted by the item setter 502 (refer FIG. 5) arrange|positioned in the operation operation part 13 The slider 173 is moved by rotating the feed screw 172 . The position of the slider 173 is detected, for example, by a float position sensor 178 (here a potentiometer) mounted on the left side surface 164b of the feed screw cover member 164 . When the engaging member 173b moves together with the slider 173, the planting depth adjustment member 122 makes the planting depth adjustment shaft 121 a rotation fulcrum via the pin member 124 and the rod-shaped member 123, and rotates. and position is adjusted. The item in which the planting depth adjustment shaft 121 and the planting depth adjustment links 114a, 114b mentioned above are rotated by rotation of the planting depth adjustment shaft 121, and the float 32 is arrange|positioned at the drive operation part 13 It is arrange|positioned at the setting planting depth position according to the setting planting depth set by the setter 502 (refer FIG. 5). The item setter 502 will be described later.

The operation of the seedling take-out control actuator mechanism 181 is demonstrated, referring FIGS. 16 and 17 . The seedling take-out control member 137 described above is connected to the slider 183 of the seedling take-out control actuator mechanism 181 via a flex mechanism. The proximal end of the connecting member 139 extending forward is attached to the seedling take-out control member 137 . The front-end|tip part of the connection member 139 is arrange|positioned in the vicinity of the left side of the seedling taking-out adjustment actuator mechanism 181 from the upper side rather than the planting frame 111. An elongated hole 139a along the longitudinal direction of the connecting member 139 is formed at the distal end of the connecting member 139 . On the other hand, the slider 183 is provided with an engaging pin member 183b inserted into the elongated hole 139a via a pin supporting member 183c. When the engaging pin member 183b is inserted into the long hole 139a of the connecting member 139, the slider 183 of the seedling take-out control actuator mechanism 181 and the seedling take-out control member 137 are connected.

The seedling take-out control actuator mechanism 181 turns the feed screw 182 by driving the seedling take-out control motor 184 in accordance with the set seedling take-out amount adjusted by the item setter 502 (refer to FIG. 5). The slider 183 is moved by rotating it. When the engaging pin member 183b is moved together with the slider 183 , the seedling take-out control member 137 is rotated via the connecting member 139 with the seedling take-out control shaft 136 as a pivot point to adjust its position. By rotation of the seedling take-out control member 137, the seedling take-out control cam 135 is rotated via the seedling take-out control shaft 136, and the seedling take-out plate 131 is set by the item setter 502 to set the seedling. The seedlings set according to the vertical blowout amount are arranged at the vertical blowout amount position. In addition, as for the position of the slider 183, for example, the position of the front-end|tip part of the rod-shaped member 188 for a detection by which the base end part adhered to the seedling take-out adjustment shaft 136, the sensor bracket 189 to the planting frame 111. The seedling taking out plate sensor 190 (here, a potentiometer) mounted through .

Next, the elevation sensor mechanism 311 and the surface detection sensor mechanism 331 are demonstrated, referring FIGS. 18 and 19 . The raising/lowering sensor mechanism 311 and the surface detection sensor mechanism 331 are adjacently attached to the center part of the planting frame 111 from center float 32a upper direction.

In the elevation sensor mechanism 311, the lower end side of the sensing arm 312 is freely rotatably connected to the front part of the center float 32a via a bracket 313, and the upper end side of the sensing arm 312 is planted. It is linked to the depth link mechanism (314). The planting depth link mechanism 314 includes the link bracket 315 fixed to the front surface of the planting frame 111, and the link body 317 connected to the link bracket 315 via the rotation support shaft 316, A sensor support member 319 connected to a front portion of the link body 317 via a connecting pin 318 is provided. The correction arm 321 erected on the planting depth adjustment shaft 121 and formed is connected to the lower part of the link body 317 via the correction rod 320 of a substantially U shape. The lower end on the rear side of the sensor support member 319 is connected to the link bracket 315 via a sensor link rod 322 having a substantially U shape. A swing support shaft 323 arranged in the left-right direction is supported by the sensor support member 319 . By rotation of the planting depth adjustment shaft 121, the correction arm 321 and the correction|amendment rod 320 displace, the link body 317 rotates the rotation support shaft 316 as a fulcrum, and the sensor support member 319. is oscillating up and down.

The rear part of the left swing plate 324 is connected to the left end of the swing support shaft 323 , and the upper end of the sensing arm 312 is connected to the front part of the left swing plate 324 . Further, on the left end side of the swing support shaft 323 , the proximal end of the regulating plate 330 interlocking with the left swing plate 324 is more loosely fitted from the sensor support member 319 side than the left swing plate 324 . On the right side of the sensor support member 319, an elevation sensor 325 (here, a potentiometer) is formed via a sensor bracket 326 . Connecting the rear portion of the right swinging plate 327 to the right end of the swinging support shaft 323, and standing on the right side of the right side of the right swinging plate 327, the elevating sensor 325 in the long groove of the long groove 328 formed engage the detection arm 329 of The raising/lowering sensor 325 detects the amount of rotational displacement of the rocking|fluctuation support shaft 323, and makes it possible to detect the float angle (inclination angle) which shows the up-down direction attitude|position of the center float 32a. A coil spring 350 is formed taut between the front end of the regulating plate 330 and the front lower portion of the sensor supporting member 319, the front end of the right swinging plate 327 and the front of the sensor supporting member 319 A coil spring 351 is formed taut between the lower parts.

The surface detection sensor mechanism 331 is attached to the link bracket 332 fixed to the front surface of the planting frame 111. The rear part of the link body 334 is connected to the upper part of the link bracket 332 through a rotation support shaft 333 , and the upper part of the sector gear case 336 is connected through the connecting rod 335 to the front part of the link body 334 . connect A portion near the lower right side of the sector gear case 336 is connected to the lower portion of the link bracket 332 via a sensor link rod 337 having a substantially J shape. The right end of the connecting rod 335 is connected to the front left end of the approximately J-shaped sensor link rod 322 of the elevating sensor mechanism 311 via the connecting plate 338 . The sector gear case 336 moves up and down in association with the displacement of the sensor support member 319 of the raising/lowering sensor mechanism 311 which fluctuates up and down with rotation of the planting depth adjustment shaft 121.

A surface detection swing shaft 339 extending in the left-right direction is rotatably supported by the sector gear case 336 . The proximal ends of a pair of left and right surface detection arms 340 and 340 are attached to the left and right both ends of the surface detection swing shaft 339, and the surface detection members 341 and 341 are attached to the front ends of the surface detection arms 340 and 340. ) is installed. A sensor shaft 342 that rotates in association with the rotation of the surface detection swing shaft 339 via the sector gear pair 343 is formed inside the sector gear case 336 . A surface detection sensor 344 (here, a potentiometer) is formed on the left side of the sector gear case 336 , and the detection shaft of the surface detection sensor 344 is connected to the left end of the sensor shaft 342 . The surface detection sensor 344 detects the amount of rotational displacement of the surface detection swing shaft 339 via the sector gear pair 343 and the sensor shaft 342, and the displacement of the surface detection members 341 and 341 and the pavement surface The height to the predetermined point (For example, the planting depth adjustment shaft 121) of the seedling planting apparatus 23 is made detectable.

Next, the box application agent spreader 400 is demonstrated, referring FIGS. 20-23. The box trial agent spreader 400 is a support frame 401 connected to the upper surface of the rear part of the planting transmission case 27 of the seedling planting mechanism 28, and the four dispersion units 402 supported by the support frame 401. ) is provided. The four dispersion|spreading units 402 are the position above the lower end part of the seedling loading stand 29, and oppose the seedling loading table 29, and are arrange|positioned side by side in the left-right direction.

Each dispensing unit 402 dispenses a predetermined amount of the box application agent from the hopper 403 containing the granular box application agent by driving the feeding mechanism 404, and from the spray nozzle 405 to the seedling loading table 29 ), spread the box application agent toward the seedling mat placed in . Each hopper 403 has an upper end and a lower end open while the lower end is bifurcated, and the upper end opening is closed by an openable and openable cover member 406 . A feeding mechanism 404 is connected to the lower end of the bifurcated hopper 403 . Each dispensing unit 402 is provided with two sets of a feeding mechanism 404 and a dispersing nozzle 405, and the feeding mechanism 404 and the dispersing nozzle 405 are arranged so as to substantially coincide with the intertidal pitch.

The feeding mechanism 404 feeds the box trial agent in the hopper 403 to the spray nozzle 405 at a predetermined supply rate by rotationally driving the feeding roll 408 accommodated in the feeding case 407 . The feeding roll 408 is substantially disk-shaped, and the some recessed part 408a is formed in the outer peripheral surface at equal intervals. The gap between the feeding roll 408 and the side wall of the hopper 403 is filled by a brush-like member 409 disposed in front of the feeding roll 408 and a sealing member 410 disposed behind the feeding roll 408 . .

The feeding roll 408 is rotationally driven by the normal feeding|feeding-out drive shaft 411 extended in the left-right direction. The driving force of the feeding|feeding-out drive shaft 411 is taken out from the planting transmission case 27. In this embodiment, the driving force extraction mechanism 412 connected to the rear part of the one planting transmission case 27 among the four planting transmission cases 27 is attached. The driving force take-out mechanism 412 is a crank plate 414 attached to the rear end of the drive take-out shaft 413 for rotational motion of the drive take-out shaft 413 to which power is transmitted from the planting transmission case 27 inside, and the crank plate ( 414) Converts to vertical reciprocating motion by the lower link rod 415 with the lower end attached to the tip. The upper side of the lower link rod 415 is connected to the manual lever plate 416 freely rotatably mounted on the lever plate support shaft 417 extending in the left and right direction, and the manual lever plate 416 is rotated and reciprocated. make it The rear end side of the upper link rod 418 arranged in the front-rear direction is connected to the manual lever plate 416 , and the upper link rod 418 is reciprocated back and forth to transmit power to the one-way clutch mechanism 420 .

The one-way clutch mechanism 420 converts the front-back reciprocating motion of the upper link rod 418 into a rotary reciprocating motion, and intermittently rotates the transmission drive shaft 421 extending in the left-right direction. In the one-way clutch mechanism 420 , the link lever member 422 is rotatably supported by the transmission drive shaft 421 , and the front end side of the upper link rod 418 is positioned above the link lever member 422 . Connect. On the transmission drive shaft 421, the clutch lever member 423 of the one-way clutch is pivotally supported on the right side of the link lever member 422 so that it can rotate freely. A drive pin 424 projecting to the left is fixed to the proximal end side of the clutch lever member 423, and a regulating pin 425 projecting to the right side is fixed to the front end side of the clutch lever member 423. The torsion coil spring 426 is fitted to the outside of the transmission drive shaft 421, one end of the torsion coil spring 426 is hooked to the drive pin 424, and the other end is fixed to the support frame 401 by a fixing member ( 427) hang on The drive pin 424 is elastically supported at the lower end of the link lever member 422 by the elasticity of the torsion coil spring 426 . The link lever member 422 is reciprocally driven by the forward and backward reciprocating motion of the upper link rod 418, and the clutch lever member 423 of the one-way clutch is driven to reciprocate with it, and the inside of the clutch lever member 423 is The transmission drive shaft 421 intermittently rotates in one direction by the action of the one-way clutch.

The rotatable range of the clutch lever member 423 is limited by the dispersion amount adjusting mechanism 430 . The dispersion amount regulating mechanism 430 includes a scattering amount regulating member 433 that linearly moves on a feed screw 432 rotated by a rotation operation of the scattering amount regulating dial 431 . The dispersion amount adjusting member 433 has a stopper member 434 at its lower end. The stopper member 434 is disposed on the arc trajectory of the regulating pin 425 of the clutch lever member 423 so that its position can be adjusted. When the dispersion amount regulating member 433 and the stopper member 434 are moved in the direction away from the regulating pin 425 , the rotatable range of the clutch lever member 423 increases while the dispersion amount regulating member 433 and the stopper member When 434 is moved in the direction adjacent to the regulating pin 425 , the rotatable range of the clutch lever member 423 is narrowed. Since the rotation angle of the transmission drive shaft 421 per one reciprocation of the upper link rod 418 becomes large, the rotation speed of the transmission drive shaft 421 becomes large, so that the rotatable range of the clutch lever member 423 is large. Conversely, the rotational speed of the transmission drive shaft 421 becomes small, so that the rotatable range of the clutch lever member 423 is small.

The rotational driving force of the transmission drive shaft 421 is transmitted to the feeding drive shaft 411 of the dispensing unit 402 via the transmission mechanism 435 connected to both ends of the transmission drive shaft 421 . Inside the transmission mechanism 435, a pair of gears (not shown) fixed to the feeding drive shaft 411 and the transmission drive shaft 421 one by one are arranged, and by the meshing of these gears, the feeding drive shaft 411 is It rotates in the opposite direction to the transmission drive shaft 421 . The feeding roll 408 intermittently rotates by the intermittent rotational drive of the feeding drive shaft 411, and the box sample in the hopper 403 passes through the recessed portion 408a of the feeding roll 408 and the spray nozzle 405. It is spread towards the seedling mat. Since the box application spreader 400 is fixed to the planting transmission case 27, the seedling mat on the seedling loading stand 29 is transferred to the seedling stand horizontal transfer mechanism 79 and the seedling vertical transfer mechanism 80 (refer to Fig. 6 ). ) relative to the scattering nozzle 405 by driving in the transverse and longitudinal directions. Thereby, the box application agent is spread evenly on the seedling mat.

In the box application sprayer 400, the rotational speed of the transmission drive shaft 421 is adjusted by adjusting the positions of the spraying amount adjusting member 433 and the stopper member 434 in the spraying amount adjusting mechanism 430, By adjusting the rotation speed of the feeding drive shaft 411, and also the rotation speed of the feeding roll 408, the dispersion amount of the box application agent disperse|distributed from the dispersion|spreading nozzle 405 is comprised so that adjustment is possible. The position adjustment of the dispersion amount adjusting member 433 and the stopper member 434 is performed by a dispersion amount adjusting actuator mechanism 436 disposed adjacent to the right side of the dispersion amount adjusting mechanism 430 and rotating the feed screw 432 . position is adjusted. The dispersion amount regulating actuator mechanism 436 includes a scattering amount regulating motor 437 for rotating the feed screw 432 , and a scattering amount sensor 438 (here, a potentiometer) for detecting the position of the dispersion amount regulating member 433 . be prepared Based on the box application agent dispersion amount set by the item setter 502 (refer to Fig. 5) described later, the position of the dispersion amount adjusting member 433 is adjusted so as to become a set dispersion amount. In addition, it is also possible to manually rotate the dispersion amount adjusting dial 431 to adjust the dispersion amount.

Next, the detailed structure of the seedling planting mechanism 28 and its periphery is demonstrated, referring FIGS. 24-29. In the rear of the planting input case 26, the seedling extraction board 131 which has the seedling extraction port 220 is arrange|positioned so that it may extend in a substantially horizontal horizontal direction. A lower rail frame 152 extending in the substantially horizontal horizontal direction is fixed to the lower back surface of the seedling loading table 29 . The lower slide shoe 223 formed in the seedling take-out plate 131 is fitted in the lower rail frame 152 in a slidable manner from below.

At the point of each seedling outlet 220 in the seedling take-out board 131, the outlet cover 226 which surrounds the inner peripheral edge of the seedling outlet 220, and the length intermediate part of the planting claw 30 are left and right both sides The planting claw clamping guide 227 to clamp and the planting claw tip guide 228 which opposes the front-end|tip side of the planting claw 30 are attached and detachable. In this case, in the bolt attachment hole 241 formed at two points in the vicinity of each seedling take-out port 220 in the seedling take-out plate 131, the attachment hole on the upper end side of the planting claw tip guide 228 ( 242), the hole 243 for attachment of the outlet cover 226, and the hole 244 for attachment on the upper end side of the planting claw pinching guide 227 are fastened together with the bolt 229 in the state which overlapped one by one. . Presence of the outlet cover 226 improves the strength of the fulcrum of each seedling outlet 220 in the seedling take-out plate 131, and stabilizes the scraping amount of the seedling of the seedling mat by the planting claw 30 contributing to The upper end side of the planting claw tip guide 228 and the planting claw clamping guide 227 also contributes to the intensity|strength improvement of the fulcrum of each seedling outlet 220 by a fastening structure together.

In embodiment, two types of combinations of the outlet cover 226, the planting claw clamping guide 227, and the planting claw tip guide 228 are prepared as the outlet unit 230. One is for a seedling mat for high-density seedlings, and the other is for a seedling mat for standard-type seedlings. It is comprised so that the air outlet unit 230 may be replaced according to which type of seedling mat of which specification is used. In the outlet cover 226, the groove width dimension ΔW of the opening groove 231 through which the planting claw 30 passes is different in width between the high density seedling object and the standard type seedling object. 29, the groove width dimension ΔWa (see (A)) of the air outlet cover for high density seedlings 226a is set to be narrower than the groove width dimension ΔWb (see (B)) of the standard type seedling outlet cover 226b are doing

In this embodiment, the mounting hole 244 of the planting claw holding guide 227 is formed long horizontally, and the attachment position of the planting claw holding guide 227 to the seedling take-out board 131 is taken out. With respect to the seedling outlet 220 of the publication 131 and the hole 241 for bolt mounting, it is adjustable in the width direction of the opening groove 231. Thereby, the planting claw pinching guide 227 of the same shape can be made suitable for both the groove width dimension ΔWa of the outlet cover 226a for high-density seedlings and the groove width dimension ΔWb of the outlet cover 226b for standard type seedlings. Therefore, the planting claw clamping guide 227 can be common in the outlet unit 230 for the seedling mat of high density seedling and the outlet unit 230 for the seedling mat of the standard type seedling, and the design cost of the planting claw clamping guide 227 and Manufacturing cost can be reduced.

25, 26 and 30, the seedling clamped by the planting claw 30 and the planting claw 30 to the longitudinal both ends side of each rotary case 31 in the seedling planting mechanism 28. The U-shaped extrusion piece 234 to extrude and the push rod 235 which slides the extrusion piece 234 along the planting claw 30 are provided. The planting claw 30 is detachably attached with the stud bolt 237 and the nut 238 to the planting main body part 236 located in the longitudinal both ends of the rotary case 31. The extruded piece 234 is fixed to the tip of the push rod 235 .

As shown in FIG. 31, in embodiment, the combination of the planting claw 30, the extrusion piece 234, and the push rod 235 is preparing two types as a planting claw unit. One is for a seedling mat for high-density seedlings, and the other is for a seedling mat for standard-type seedlings. The front-end|tip side of the planting claw 30a for high-density seedlings is comprised narrower than the base-end side. In this case, the front-end|tip side of the planting claw 30b for standard type seedlings is set to the width of about 14 mm, whereas the front-end|tip side of the planting claw 30a for high-density seedlings is set to the width of about 11 mm.

On the other hand, the outer side of the bifurcated upper end in the extruded piece 234a for high-density seedlings is formed in a chamfered shape in which the corners are cut out so as to be obliquely downward from the inside to the outside. And the bifurcated upper end side of the extrusion piece 234a is adjoined so that it can slide freely on the back surface of the narrow front-end|tip side of the planting claw 30a for high-density seedlings. Thus, when the front-end|tip side of the planting claw 30a and the bifurcated upper end side of the extruded piece 234a are comprised narrowly, scraping the seedlings for 1 share from the seedling mat of high-density seedlings is made easy, , it can suppress that the scraped seedling fills in the U-shaped extruded piece 234a. On the other hand, the extruded piece 234b for standard type seedlings is formed to have a substantially uniform thickness. And the bifurcated upper end side of the extrusion piece 234b is adjoined so that it can slide freely on the back surface of the front-end|tip side of the planting claw 30b for standard type seedlings.

Moreover, as shown in FIG. 32, the extruded piece cover 251 is attached to the extruded piece 234a for high-density seedlings, and the push rod 235 front-end|tip part, and the extruded piece 234a and the extruded piece cover 251 are two. You may make it approach the back surface of the front-end|tip side of the planting claw 30b for standard type seedlings with the forked upper end side. The extruded piece cover 251 has a substantially U-shape, and has a cavity 252 having an inner wall conforming to the outer circumferential shape of the extruded piece 234a and the push rod 235, and the tip side of the bottom of the inner wall of the extruded piece 234a. A front locking projection 253 in contact with the site, and a pair of rear locking projections 254 in contact with the lower portion of the bifurcated rear side surface (the proximal side side of the push rod 235) of the extruded piece 234a. is equipped with The extruded piece cover 251 is formed of a flexible material metal or resin.

The front end of the extruded piece 234a and the extruded piece cover 251 is directed from the rear locking projection 254 side toward the front locking projection 253 side, and the spacing between the rear locking projections 254 and 254 is It is inserted into the cavity 252 while widening. While the front locking projection 253 abuts against the tip side portion of the inner wall bottom of the extruded piece 234a, the rear locking projections 254 and 254 hold the push rod 235 while the extruded piece 234a is pressed. Abuts against the rear surface of the extruded piece cover 251 is mounted on the extruded piece 234a and the push rod 235 front end. Thereby, even if it does not replace the extrusion piece 234a and the push rod 235, while replacing|exchanging the planting claw 30a for high-density seedlings for the planting claw 30b for standard type seedlings, only attaching the extruded piece cover 251 Therefore, it is possible to easily respond to the seedling mat of standard type seedlings. In other words, both the seedling planting work using the seedling mat of the standard type seedling and the seedling planting work using the seedling mat of the high-density seedling can be realized with one rice transplanter, without the complicated replacement of the push rod 235. , the versatility of the rice transplanter can be improved.

Next, the control system of the rice transplanter 1 regarding seedling planting is demonstrated. As shown in FIG. 33, the planting operation controller 500 (control apparatus) as a control means which mainly bears control concerning the seedling planting apparatus 23 is mounted on the traveling body 2 . The planting operation controller 500 is a CPU (Central Processing Unit) that executes various arithmetic processing and control, a ROM (Read Only Memory) in which a control program and various data are stored, and a control program and various data temporarily stored It has a storage device 501 including a RAM (Random Access Memory), an input interface, and the like.

On the input side of the planting operation controller 500, an item setting device 502 for selecting and setting various seedling planting conditions, a hydraulic sensitivity setting device 503 for setting a reference float angle, and an elevation sensor for detecting a float angle ( 325), the lower link 20 or the upper link 21 (refer to Fig. 1) is composed of a sensor such as a potentiometer mounted on the rotating portion of the position sensor for detecting the position of the seedling planting device 23 (504), A vehicle speed sensor 505 that detects travel output from the transmission case 6, a float position sensor 178 that detects the position of the float 32, and a seedling take-out plate sensor that detects the position of the seedling take-out plate 131 ( 190), a surface detection sensor 344 for detecting the position of the surface detection body 341, a dispersion amount sensor 438 for detecting the position of the dispersion amount adjusting member 433 of the dispersion amount adjusting mechanism 430, and a box; The box application sprayer attachment sensor 506 which detects attachment of the application agent spreader 400 with respect to the seedling planting apparatus 23 is electrically connected.

To the output side of the planting operation controller 500, the raising/lowering switching valve 99 which controls the expansion and contraction movement of the raising/lowering cylinder 39, the electromagnetic on/off valve 101, and the planting depth adjustment motor which adjusts the position of the float 32 ( 174), the motor drive circuit unit 511 of the seedling take-out plate 131, the motor drive circuit unit 512 of the seedling take-out control motor 184 for adjusting the position of the seedling take-out plate 131, and a dispersion amount control motor for adjusting the box application spray amount A liquid crystal panel 522 (display unit) that displays various setting items and the like is electrically connected to the motor drive circuit unit 513 at 437 and the display panel 521 in the operation operation unit 13 . In addition, although FIG. 33 is a schematic functional block diagram and illustration is abbreviate|omitted, various sensors, a drive apparatus, etc. are electrically connected to the planting operation controller 500 other than that.

As shown in FIG. 5 , in the driving operation unit 13 , the hydraulic sensitivity setter 503 is disposed near the right side of the rear part of the driving operation unit 13 , and the item setting unit 502 includes a steering wheel ( 14) is arranged in the vicinity of the left front side of the handle shaft. The hydraulic sensitivity setter 503 is constituted by a switch such as a rotary encoder. The item setter 502 is constituted by a switch such as a rotary encoder in which a push switch is formed. When the item setter 502 is operated to rotate the knob in either of the left and right directions, various setting items are displayed on the liquid crystal panel 522 of the display panel 521 when the item setter 502 is rotated, as shown in FIG. are displayed sequentially. In addition, in FIG. 34, only a part of the various setting items of the rice transplanter 1 is shown.

When the item setter 502 is pressed and operated while the desired item selection screen 523 is displayed on the liquid crystal panel 522, it moves to the setting screen 524 of the setting item, and the item setter 502 Adjustment or change of the selected item becomes possible by the knob rotation operation of . When the item setter 502 is pressed while the setting screen 524 is displayed, the condition of the selected item is determined and the item selection screen 523 is displayed. In this embodiment, by the item setter 502, selection of seedling planting mode (seedling mode), adjustment of planting depth (planting depth) of a seedling, adjustment of seedling vertical extraction amount (seedling extraction amount), box application Adjustment of the dispersion amount (box application), etc. are performed. Here, the setting item of the box application spraying amount (box application) is a box application sprayer mounting sensor (for detecting the attachment of the box application agent spreader 400 (see FIG. 21) to the seedling planting device 23) ( You may make it display when 506) (refer FIG. 33) detects attachment of the box application agent spreader 400. FIG.

In addition, selection and setting of these items are not limited to the configuration implemented by the item setter 502 . For example, the selection of the seedling mode and the standard mode may be switched with a changeover switch, and may be switched every time the pushbutton type switch for mode selection is pressed. Moreover, you may set the planting depth adjustment of a seedling, seedling longitudinal extraction amount adjustment, and adjustment of the box application agent dispersion|distribution amount, respectively with the rotary encoder type setting machine.

With reference to FIG. 35, one Embodiment of setting of seedling planting conditions and seedling planting control is demonstrated. The rice transplanter 1 is configured such that a standard mode corresponding to the seedling mat of the standard type seedling and a wheat seedling mode corresponding to the seedling mat of the high-density seedling in which the seedlings are grown at a higher density than the seedling mat of the standard type seedling are selectable. The planting operation controller 500 memorize|stores the control program for standard mode, and the control program for dense seedling mode in the storage device 501 . When using a seedling mat for high-density seedlings, a high-density seedling outlet cover 226a, a planting claw 30a and an extruded piece 234a are mounted. 30b) and the extruded piece 234b are mounted (see FIGS. 30 and 31).

When the wheat seedling mode is selected on the item selection screen 523 (see FIG. 34) of the seedling mode by the operation of the item setter 502 (step S1: Yes), the control program for the seedling mode is read and input (step S2) . In the dense seedling mode, on the item selection screen 523 and the setting screen 524 of the seedling removal amount (seedling vertical extraction amount), the adjustable range of the seedling vertical extraction amount is limited to the predetermined range on the lower limit side (step S3) . In other words, when planting the seedling mat of high-density seedlings, the range in which the seedling take-out control member 137 can be displaced by the seedling take-out control actuator mechanism 181 (refer to FIG. By electrically controlling the limit, the adjustable range of the seedling vertical ejection amount is limited to the predetermined range on the lower limit side. In this embodiment, while in the standard mode, the adjustable range of the seedling vertical take-out amount is 8 to 17 mm (1 scale 1 mm and 10 scales), as shown in FIG. 34 , in the dense seedling mode, the seedling vertical take-out amount is adjusted. The possible range 525 is limited to 8 to 13 mm (6 divisions on the lower limit side). When the operator selects the dense seedling mode during the planting operation using the high-density seedling mat, the seedling vertical extraction amount can be suppressed to 13 mm or less even if the seedling vertical extraction amount setting is forgotten. While it is possible to prevent that a number becomes extremely large and it becomes useless seedling consumption, and to be able to perform an appropriate rice planting operation, the burden of the operator regarding seedling vertical take-out amount setting can be reduced.

In addition, as described above, the seedling lengthwise feed amount by intermittent driving of the seedling longitudinal feed belt 155 (refer to Figs. 9 and 12) is via the interlocking wire 156, the seedling take-out interlocking cam 138 (Fig. 8). See) and the follower cam 153 are connected, so that the seedling vertical feed amount also changes in response to the change in the seedling vertical take-out amount. Therefore, when using the seedling mat for high-density seedlings, when the seedling vertical take-out amount is set to be smaller than when using the seedling mat for standard-type seedlings, the seedling longitudinal feed amount is also reduced, and appropriate vertical seedling feed according to the seedling vertical take-out amount is performed. Accordingly, when using the seedling mat for high-density seedlings, compared to when using the seedling mat for standard seedlings, the consumption rate of the seedling mat can be reduced, and the number of seedling mats required for the planting operation per unit area can be reduced, and seedling loading The frequency|count of replenishing the seedling mat to the stand 29 can be reduced, and the time reduction required for a seedling planting operation|work, and the effort reduction of an operator and a work assistant can be aimed at.

Then, in wheat seedling mode, the planting depth control of the seedling in seedling planting work is demonstrated. At the time of dense seedling mode selection, compared with the time of standard mode selection, the raising/lowering control of the hydraulic cylinder 39 (hydraulic raising/lowering control mechanism) is correct|amended so that the planting depth of a seedling may deepen. When the seedling planting apparatus 23 is lowered by operation of the work lever 16 and a seedling planting operation is started (step S4: Yes), it goes up and down by operation of the raising/lowering switching valve 99 and the electromagnetic on/off valve 101. The cylinder 39 is driven to the lowering side. In the lifting cylinder 39 until the elevation sensor value V of the elevation sensor 325 and the target value V1, which is the hydraulic sensitivity (target inclination angle of the center float 32a) coincide (the inclination angle of the center float 32a is constant) By this, descending control of the seedling planting apparatus 23 is carried out, and raising/lowering control of the seedling planting apparatus 23 is performed so that the target planting depth may be kept constant (V=V1) after that.

During the seedling planting operation, the hydraulic sensitivity set value of the hydraulic sensitivity setter 503, the lifting sensor value V of the lifting sensor 325, and the vehicle speed sensor value of the vehicle speed sensor are read and input (step S5: Yes), and the hydraulic sensitivity setter ( 503), the hydraulic pressure sensitivity (sensitivity) of the hydraulic cylinder 39 is corrected to the insensitive side (the side where the front portion of the float 32a rises) (step S6), and the elevation sensor value and the corrected sensitivity value A target value V1 that is a hydraulic pressure sensitivity is calculated based on the and the vehicle speed sensor value (step S7). Here, as the traveling speed of the traveling body 2 becomes faster, the float 32 tends to ascend forward and the amount of sinking of the float 32 increases, while the traveling speed of the traveling body 2 decreases, the float 32 ) becomes a forward downward tendency and the amount of subsidence of the float 32 decreases, so in said step S6, according to a vehicle speed sensor value, the target value V1 is computed so that seedling planting depth may become constant.

The raising/lowering control of the seedling planting apparatus 23 is carried out so that the raising/lowering sensor value V and the target value V1 may correspond (step S8). When raising/lowering sensor value V and target value V1 correspond, raising/lowering of the seedling planting apparatus 23 is stopped, without operating the hydraulic cylinder 39. When the elevation sensor value V is smaller than the target value V1, the solenoid on/off valve 101 is connected to the open position 101a, and the elevation switching valve 99 is connected to the discharge position 99b to move the lifting cylinder 39 to the shaft. (縮) It is operated and the seedling planting apparatus 23 is descended so that the raising/lowering sensor value V and the target value V1 may correspond. When the elevation sensor value V is larger than the target value V1, the solenoid on/off valve 101 is connected to the open position 101a, and the elevation switching valve 99 is connected to the supply position 99a, so that the elevation sensor value V and the target value V1 are connected. The seedling planting apparatus 23 is raised so that this may correspond.

On the other hand, when the standard mode is selected on the item selection screen 523 (see Fig. 34) of the seedling mode (step S1: No), the control program for the standard mode is read and input (step S11). In the standard mode, on the item selection screen 523 and the setting screen 524 of the seedling removal amount (seedling vertical extraction amount), the adjustable range of the seedling vertical extraction amount is not electrically limited, and 8 to 17 mm It is selectable from the range of (10 divisions by 1 mm in 1 division).

Then, the planting operation of the seedling is started in the standard mode, and when the planting operation of the seedling is in progress (step S12: Yes), the hydraulic sensitivity set value of the hydraulic sensitivity setter 503 and the raising/lowering sensor value V of the raising/lowering sensor 325 are The vehicle speed sensor value of the vehicle speed sensor 505 is read and input (step S13: Yes), and a target value V1 that is the hydraulic pressure sensitivity is calculated (step S14). Here, in the standard mode, the hydraulic sensitivity set value is not corrected as in step S6 in the dense seedling mode. And the seedling planting apparatus 23 is controlled so that the raising/lowering sensor value V and the target value V1 may correspond (step S15).

In this embodiment, when selecting the seedling mode, as in step S3 above, the hydraulic sensitivity of the hydraulic cylinder 39 is corrected to the insensitive side with respect to the hydraulic sensitivity setting value of the hydraulic sensitivity setter 503, compared with the standard mode selection. The raising/lowering control of the hydraulic cylinder 39 (hydraulic raising/lowering control mechanism) is correct|amended so that the planting depth of a seedling may deepen. In the rice planting operation using the seedling mat of the high-density seedling, compared with the case of using the seedling mat of the standard type seedling, since the area in which the planting claw 30 scrapes the seedling mat is small, the seedlings planted in the field are easy to float. Therefore, when selecting the wheat seedling mode corresponding to the seedling mat of the high-density seedling, the lifting control of the hydraulic cylinder 39 is automatically corrected so as to increase the planting depth of the seedling compared to the time of selecting the standard mode corresponding to the seedling mat of the standard type seedling. By doing so, while being able to prevent floating seedlings, the burden of the operator regarding planting depth setting of a seedling can be reduced.

Moreover, even if in said step S7 and S14, the target value V1 of hydraulic sensitivity is corrected so that the settlement amount of the center float 32a may become constant using the sensor value of the surface detection sensor 334, and the planting depth of a seedling becomes constant. do. The settlement amount of the center float 32a is calculated from the sensor value of the surface detection sensor 334 which detects the actual height of the pavement surface, and the target value V1 of the hydraulic sensitivity is set on the insensitive side (the front part of the float 32a) so that the settlement amount becomes constant. It is corrected to the rising side) or the sensitive side (the side where the front portion of the float 32a descends). Here, at the time of selecting the seedling mode, the target value V1 of the hydraulic sensitivity is calculated and corrected by using the corrected sensitivity value after the hydraulic sensitivity set value is corrected to the insensitive side in step S6.

With reference to FIG. 36, setting of seedling planting conditions, and other embodiment of seedling planting control are demonstrated. In this embodiment, instead of said step S6 (at the time of dense seedling mode selection) of embodiment demonstrated with reference to FIG. 35, step S3-1 which correct|amends the position of the float 32 so that the planting depth of a seedling may deepen is included. In step S3-1, with respect to the planting depth setting value (refer FIG. 34) set by operation of the item setter 502, a planting depth setting value is correct|amended so that the planting depth of a seedling may deepen. In this embodiment, by drive of the planting depth adjustment motor 174 (refer FIG. 15), only the correction amount rotates the planting depth adjustment member 122 forward, and the position of the float 32 is planted depth adjustment shaft 121. corrected to the side. Thereby, the claw advance amount (distance of the front-end|tip part of the planting claw 30, and the float 32 bottom surface) of the planting claw 30 at the time of a seedling planting operation becomes large, and the planting depth of a seedling deepens. Thus, in the dense seedling mode using the seedling mat of the high-density seedling, by automatically correcting the position of the float 32 so as to deepen the planting depth of the seedling, the area in which the planting claw 30 scrapes the seedling mat is Even if it is small, while being able to prevent floating seedling, the burden of the operator regarding planting depth setting of a seedling can be reduced.

With reference to FIG. 37, embodiment of box application agent dispersion|distribution control is demonstrated. In this embodiment, step S3-2 which correct|amends the box application agent dispersion|distribution amount is included at the time of wheat seedling mode selection. The box application spray amount of the box application agent spreader 400 (see FIGS. 20 to 23 ) is the set value of the box application agent dispersion amount (box application) set by the operation of the item setting device 502 ( FIG. 34 ) reference), or by rotating the dispersion amount adjusting dial 431 (see FIG. 23). At the time of the wheat seedling mode selection, the chemical|medical agent dispersion amount set value is corrected with respect to the chemical|medical agent dispersion amount set value so that the chemical|medical agent dispersion amount may increase (step S3-2). In this embodiment, the dispersion amount regulating member 433 is moved in the direction away from the regulating pin 425 (rear-tilt upward direction) by a correction amount by driving the scattering amount regulating motor 437 (see FIG. 23 ). Thus, the positions of the dispersion amount adjusting member 433 and the stopper member 434 are corrected.

In the seedling mat of the high-density seedling, since the seedlings are grown densely, when the box application amount is the same as when the seedling mat of the standard type seedling is used, sufficient insecticide or sterilization of the seedling cannot be performed. Therefore, when using the seedling mat for high-density seedlings (when the wheat seedling mode is selected), by automatically setting the box application amount to be large, insecticide and sterilization of sufficient seedlings in the seedling mat of high-density seedlings can be performed, and While it is possible to realize healthy growth of seedlings, the burden on the operator regarding the setting of the box application agent dispersion amount can be reduced.

As mentioned above, like embodiment described, the rice transplanter 1 of the said embodiment scrapes a seedling with the planting claw 30 from the seedling mat mounted on the seedling loading stand 29, and the seedling planting apparatus ( 23), and a standard mode with a large amount of scraping corresponding to the seedling mat of the standard type seedling, and a low scraping amount corresponding to the seedling mat of the high-density seedling in which the seedlings are grown at a higher density than the seedling mat of the standard type seedling Since the dense seedling mode is configured to be selectable, the setting of the rice transplanter at the time of using the seedling mat for high-density seedlings can be easily set, and the burden on the operator can be reduced.

Moreover, the rice transplanter 1 of the said embodiment raises and lowers the seedling planting apparatus 23 based on the detection value of the raising/lowering sensor 325 which detects the inclination angle of the float 32a which adjusts the planting depth of a seedling. As a structure provided with the hydraulic cylinder 39 (elevation control mechanism), when selecting the dense seedling mode, compared with the time of selecting the standard mode, since it is comprised so that the planting depth of a seedling becomes deep, the seedling mat of a high density seedling is used In the planting operation, the planting claw 30 scrapes the seedling mat because the area in which the seedling mat is scraped is small, so the seedlings planted in the pavement are easy to float, but by automatically correcting the lifting control of the hydraulic cylinder 39 to deepen the planting depth of the seedlings , while being able to prevent floating seedlings, the burden on the operator regarding the planting depth setting of a seedling can be reduced.

Moreover, the rice transplanter 1 of the said embodiment is a structure which can adjust the seedling vertical extraction amount of the planting claw 30 by position adjustment of the seedling extraction board 131 arrange|positioned below the seedling loading stand 29, When the dense seedling mode is selected, the adjustable range of the seedling vertical take-out amount is limited to the predetermined range on the lower limit side. Therefore, when the operator selects the dense seedling mode, when the operator selects the dense seedling mode, the seedling vertical take-out is limited to the predetermined range on the lower limit side. Even if you forget to set the amount, the vertical seedling withdrawal amount can be suppressed within a predetermined range on the lower limit side, so that the number of seedlings per week is extremely large and wasteful seedling consumption is prevented and proper planting operation can be performed. Together with this, it is possible to reduce the burden on the operator regarding the setting of the seedling vertical take-out amount.

Moreover, the rice transplanter 1 of the said embodiment is a structure provided with the box application sprayer 400 (medicine spreader) which spreads a chemical|medical agent to the seedling mat mounted on the seedling loading stand 29, Comprising: The wheat seedling mode of At the time of selection, compared to the time of selection of the standard mode, since it is configured to increase the amount of chemical spread of the box application sprayer 400, at the time of planting operation using the seedling mat of high density seedling, the operator selects the wheat seedling mode. When selected, by automatically setting a large amount of box application agent spraying, insecticide and sterilization of sufficient seedlings in the seedling mat of high-density seedlings can be achieved, and healthy growth of seedlings planted in the box can be realized. It is possible to reduce the burden on the operator regarding the setting of the spraying amount of the application agent.

Moreover, the rice transplanter 1 of the said embodiment scrapes a seedling with the planting claw 30 from the seedling mat mounted on the seedling loading stand 29, and the seedling planting apparatus 23 which plant|plants in a pavement, and a seedling A rice transplanter provided with the hydraulic cylinder 39 (lifting/lowering control mechanism) which raises and lowers the seedling planting apparatus 23 based on the detection value of the raising/lowering sensor 325 which detects the inclination angle of the float 32a which adjusts planting depth In the case of planting the seedling mat of high-density seedlings, compared to the planting of the seedling mat of standard-type seedlings in which the seedlings were grown at a lower density than the seedling mat of high-density seedlings, the planting depth of the seedlings is constructed so as to be deeper than that of the seedling mat of high-density seedlings. Floating seedling can be prevented even if it is a case where the area in which the planting claw 30 scrapes a seedling mat is small in the rice planting operation using the seedling mat of.

Moreover, the rice transplanter 1 of the said embodiment correct|amends the hydraulic pressure sensitivity (sensitivity) of the hydraulic cylinder 39 (lifting/lowering control mechanism) to the insensitive side at the time of planting the seedling mat of a high-density seedling, so that the planting depth of a seedling may deepen. Since it comprises, without separately forming a member for deepening the planting depth, only by correcting the hydraulic pressure sensitivity of the hydraulic cylinder 39 at the time of planting the seedling mat of high-density seedlings, the planting depth of the seedlings is easily deepened and floating seedlings are prevented. can do.

Moreover, the rice transplanter 1 of the said embodiment is a structure by which the float 32 is position-controlled with the displacement of the planting depth adjustment member 122 position-controlled by the planting depth adjustment actuator mechanism 171, High-density seedling At the time of planting of the seedling mat of Just by correcting the position of the float 32 in the bush, the planting depth of the seedling can be deepened easily, and floating seedlings can be prevented.

Moreover, the rice transplanter 1 of the said embodiment scrapes a seedling with the planting claw 30 from the seedling mat mounted on the seedling loading stand 29, and the seedling planting apparatus 23 which plant|plants in a pavement, and a chemical|medical agent In the rice transplanter equipped with a box application spreader 400 (drug spreader) to spread, the seedling mat of a standard type seedling in which the seedlings are grown at a lower density than the seedling mat of high-density seedlings during planting of the high-density seedlings seedling mat At the time of planting, since the drug dispersion amount of the box application sprayer 400 is configured to be changed, the drug dispersion amount is different at the time of planting the seedling mat of high-density seedlings and the planting of the seedling mat of standard-type seedlings. , it is possible to spray an appropriate amount of the drug according to the seedling mat for high-density seedlings and the seedling mat for standard-type seedlings, respectively.

Moreover, in the transplanter 1 of the said embodiment, at the time of planting of the seedling mat of a high-density seedling, compared with the planting of the seedling mat of a standard type seedling, the chemical|medical agent dispersion amount of the box application spraying machine 400 (medicinal|medical agent spreader) In the case of planting work using the seedling mat of high-density seedlings, sufficient insecticide and sterilization of seedlings in the seedling mat of high-density seedlings can be performed, and healthy growth of seedlings planted in the field can be realized. can

Next, another embodiment of a rice transplanter is demonstrated, referring FIGS. 38 and 39 . The rice transplanter of this embodiment is equipped with the chemical|medical agent spreader 440 which applies a chemical|medical agent to the groove|channel which the cutting machine 441 formed in the seedling planting apparatus 23 cuts out to a field|pavement. The chemical|medical agent spreader 440 is provided in the back of the seedling loading stand 29.

The chemical|medical agent spreader 440 has the structure similar to the box application agent spreader 400 (refer FIGS. 20-24). In the chemical|medical agent spreader 440, the upper end side of the eight hoses 445 is connected to the lower part of the delivery case 407 of the delivery mechanism 404 instead of the eight spray nozzles 405.

In this embodiment, eight small balls 441 are formed. Each grocer 441 is fixed to the back surface of the floats 32a, 32b so that it may be arrange|positioned diagonally forward of the position where a seedling is planted by the planting claw 30. An embedding chute 442 having a cross-section C-shaped is fixed to the rear portion of the jigsu 441. To the upper end side of the embedding chute 442 , the lower end side of the hose 445 is connected via a boot 443 . In addition, a covering plate 444 fixed to the floats 32a and 32b is formed behind the embedding chute 442 .

The drug delivered from the lower part of the delivery case 407 of the drug spreader 440 is transferred to the embedding chute 442 through the hose 445 and the boot 443, and the packing machine 441 forms. It is spread by the guidance of the embedding chute 442 in the groove. The grooves of the pavement in which the chemical is dispersed are backfilled by the cover plate 444 . Thereby, a chemical|medical agent is embedded in the side of the seedling row planted by the planting claw 30.

The chemical|medical agent spreader 440 is similar to the box application agent spreader 400 (refer FIGS. 20-24), and the dispersion|distribution amount adjustment member 433 and the stopper member 434 in the dispersion amount adjustment mechanism 430 are By adjusting the rotation speed of the transmission drive shaft 421 by position adjustment, the amount of chemical|medical agent disperse|distributed from the embedding chute 442 is comprised so that adjustment is possible.

In this embodiment, as one of the item selection screens 523 displayed on the liquid crystal panel 522 (see FIG. 5 ), the setting screen ( (refer to (a4) of FIG. 40(A) and (b4) of FIG. 40(B)) are shown. In addition, in this embodiment, the item selection screen 523 and the setting screen 524 of the box application agent dispersion amount identified by the character of "box application" shown in FIG. 34 are not displayed. The drug dispersion amount of the drug spreader 440 is set by operation of the item setter 502 (refer to FIG. 5 ). Moreover, the chemical|medical agent dispersion amount of the chemical|medical agent spreader 440 can also be set by manual rotation operation of the dispersion|distribution amount adjustment dial 431 (refer FIG. 39).

As shown in Fig. 40(A), when the item setter 502 is pressed while the item selection screen 523 (a1) of the seedling mode is displayed on the liquid crystal panel 522, the setting screen of the seedling mode Proceeding to (524), the characters of "seedling mode" are displayed in reverse (a2). Subsequently, when the item setter 502 is pressed and operated after the character of "Damage" is displayed in reverse by the knob rotation operation of the item setter 502, the secrecy mode is selected and displayed on the liquid crystal panel 522. The item selection screen 523 (a3) of the seedling mode in which the characters of "wheat seedling" are displayed in reverse is displayed. When a dense seedling mode is selected, the planting operation controller 500 (refer FIG. 33) will read and input the control program for dense seedling mode. In this embodiment, as shown in (a4) of Fig. 40 (A), the initial dispersion amount setting value of the chemical spreader 440 at the time of selecting the dense seedling mode is the initial dispersion amount setting value at the time of selecting the standard mode (Fig. 40 ( It is corrected so that it becomes small compared with (b4) of B).

In addition, after the wheat seedling mode is selected, for a predetermined period of time, the item selection screen 523 (a3) of the seedling mode in which the characters of "wheat seedling" are displayed in reverse, and the item selection screen 523 (a4) of the drug dispersion amount are set They are alternately displayed on the liquid crystal panel 522 at a period (for example, a period of 2 seconds). Thereby, attention is urged|stimulated to an operator about the change of the chemical|medical agent dispersion amount setting value. In addition, this alternating display operation is canceled even before the lapse of the predetermined time when the item setter 502 is pressed by the operator or the knob is rotated.

On the other hand, when the standard mode is selected, as shown in Fig. 40(B), by the operator's operation of the item setter 502, the liquid crystal panel 522 is displayed on the seedling mode item selection screen 523 ( b1), the seedling mode setting screen 524 (b2) in which the characters of “seedling mode” are inverted, and the seedling mode item selection screen 523 (b3) in which the characters of “standard” are inverted are displayed in this order. When the standard mode is selected, the planting operation controller 500 reads and inputs the control program for standard mode, and sets the initial dispersion amount setting value (refer (b4)) at the time of standard mode selection. Also, similarly to when the wheat seedling mode is selected, after the standard mode is selected, the item selection screen 523 (b3) of the seedling mode in which the characters of “standard” are displayed in reverse, and the item selection screen 523 ( b4) This is alternately displayed on the liquid crystal panel 522 at a predetermined cycle, and the change of the chemical|medical agent dispersion amount setting value is alerted to an operator. In addition, the alert to the operator by the said alternating display operation|movement is applicable also to embodiment of the box application agent dispersion|distribution control demonstrated with reference to FIG.

As described above, in this embodiment, in the same manner as in the embodiment of box application agent dispersion control described with reference to FIG. 37 , when the wheat seedling mode or the standard mode is selected, the drug dispersion set value is automatically set, and when the wheat seedling mode is selected, The dispersion amount setting value is corrected. In addition, after the seedling mode selection operation is performed and the initial dispersion amount set value is set, when the dispersion amount set value is changed by the operator's operation, the chemical spreader 440 is configured to supply the chemical to the hose based on the changed dispersion amount set value. (445) is fed. Also in embodiment of box trial agent dispersion|distribution control demonstrated with reference to FIG. 37, when the dispersion|distribution amount set value is changed by operation of an operator after it became selection operation of seedling mode, it is the same.

In this embodiment, the chemical|medical agent spreader 440 disperse|distributes a chemical|medical agent to the groove|channel cut into the pavement with the tooling machine 441 formed in the seedling planting apparatus 23. As shown in FIG. Moreover, at the time of planting of the seedling mat of a high-density seedling, and the planting of the seedling mat of a standard type seedling, the initial stage dispersion amount setting value of the chemical|medical agent dispersion amount of the chemical|medical agent spreader 440 differs. Thereby, the chemical|medical agent spreader 440 can spread|disperse the chemical|medical agent of the appropriate quantity according to the seedling mat of a high-density seedling, and the seedling mat of a standard type seedling, respectively, to a field. In addition, since the rice transplanter of this embodiment spreads the chemical not on the seedling mat but on the pavement, there is an upper limit on the amount of chemical spread per one seedling mat, so that an appropriate amount of the chemical cannot be dispersed on the seedling mat of high-density seedlings. Even if it is a case, an appropriate amount of a chemical|medical agent can be spread|dispersed to a field at the time of planting of the seedling mat of a high-density seedling.

In addition, when planting the seedling mat of high-density seedlings, the number of seedlings per week is reduced compared to the time of planting of the seedling mat of standard-type seedlings in that a narrow planting claw 30a for high-density seedlings (see FIG. 31) is used. tends to Then, in this embodiment, at the time of selection of the dense seedling mode, the chemical|medical agent dispersion amount with respect to the pavement per unit area is made small compared with the time of standard mode selection. Thereby, both at the time of planting of the seedling mat of high-density seedlings, and at the time of planting of the seedling mat of standard type seedlings, an appropriate amount of a chemical|medical agent is spread|dispersed to the field, and while being able to realize the sound growth of the seedling planted in the field, a chemical|medical agent It is possible to reduce the burden on the operator regarding the setting of the dispersion amount.

Further, for example, when planting a seedling mat of high-density seedlings, the number of seedlings per week tends to increase compared to when planting a seedling mat of standard-type seedlings, etc. You may comprise in a bush so that the chemical|medical agent dispersion amount of a chemical|medical agent spreader may be increased compared with the time of planting of the seedling mat of a standard type seedling. For example, the program for wheat seedling mode and the program for standard mode may be designed so that the amount of chemical|medical agent dispersion with respect to the packaging per unit area at the time of selection of a wheat seedling mode becomes large compared with the time of standard mode selection.

The present invention is not limited to the above-described embodiment, and can be embodied in various aspects. The configuration of each part is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

1: Rice transplanter
23: seedling planting device
29: seedling loading stand
30: planting claw
400: box application spreader (drug spreader)

Claims (3)

In the rice transplanter provided with the seedling planting apparatus which scrapes the seedling with a planting claw from the seedling mat mounted on the seedling loading stand, and plantes it in a pavement, and the chemical|medical agent spreader which spreads a chemical|medical agent,
The drug spreader is configured to spread the drug toward the seedling mat placed on the seedling loading table,
It is possible to select the wheat seedling mode for planting the high-density hair-growth seedling mat and the standard mode for planting the standard-type hair-growth seedling mat in which the seedlings are grown at a lower density than the high-density hair-growth seedling mat.
At the time of planting of the said wheat seedling mode, compared with the time of planting of the said standard mode with respect to the same seedling extraction amount, it is correct|amending so that the chemical|medical agent dispersion amount of the said chemical|medical agent spreader may increase. In the rice transplanter provided with the seedling planting apparatus which scrapes the seedling with a planting claw from the seedling mat mounted on the seedling loading stand, and plantes it in a pavement, and the chemical|medical agent spreader which spreads a chemical|medical agent,
The said chemical|medical agent dispersing machine is a structure which disperse|distributes a chemical|medical agent to the groove|channel formed in the said packaging by the mouthpiece formed in the said seedling planting apparatus,
It is possible to select the wheat seedling mode for planting the high-density hair-growth seedling mat and the standard mode for planting the standard-type hair-growth seedling mat in which the seedlings are grown at a lower density than the high-density hair-growth seedling mat.
At the time of planting of the said wheat seedling mode, compared with the time of planting of the said standard mode with respect to the same seedling extraction amount, it is correct|amending so that the chemical|medical agent dispersion amount of the said chemical|medical agent spreader may increase. delete

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