JP7029004B2 - Working machine - Google Patents

Description

The present invention uses a riding-type rice transplanter for planting seedlings (corresponding to agricultural materials) in a field, a riding-type sowing machine for supplying seeds (corresponding to agricultural materials) to the field, fertilizers, chemicals, etc. (corresponding to agricultural materials) in the field. Related to work machines such as passenger-type work machines supplied to.

A passenger-type rice transplanter, which is an example of a working machine, has a configuration as disclosed in Patent Document 1. In Patent Document 1, the power of the engine (corresponding to the driving part) is transmitted to the transmission, and the power of the transmission is branched in parallel and transmitted to the wheels for traveling and the seedling planting device (corresponding to the working device). Has been done.

As a result, seedlings are planted on the rice field by the seedling planting device between the stocks (corresponding to the supply interval) set in advance along the traveling direction of the aircraft, and the transmission is operated to change the traveling speed of the aircraft. Even so, since the power transmitted to the seedling planting device is the power of the transmission, the space between the plants by the seedling planting device is maintained at regular intervals.

In Patent Document 1, the power of the transmission is transmitted to the seedling planting device through the inter-strain transmission device, and by operating the inter-strain transmission device, the space between the stocks by the seedling planting device is set to a desired interval. Can be done. By changing between the stocks, it is possible to change the supply amount of seedlings to be planted (total amount of seedlings planted in one paddy field, amount of seedlings used per unit mileage, etc.).

Japanese Unexamined Patent Publication No. 2014-70653

In Patent Document 1, the inter-stock transmission is a transmission having a gear shifting type having a plurality of gear shifting positions. In recent years, the supply interval and supply amount of agricultural materials (total amount of agricultural materials supplied in one field, amount of agricultural materials used per unit mileage, etc.) are appropriate according to the condition of the field and agricultural materials. There is a growing demand to set it to.

An object of the present invention is to make it possible to appropriately set the supply interval and supply amount of agricultural materials in a working machine provided with a working device for supplying agricultural materials to a field along the traveling direction of the machine. There is.

The working machine of the present invention is provided with a transmission for transmitting the power of the driving unit and a working device for supplying agricultural materials to the field along the traveling direction of the machine, and the power of the transmission is used for the traveling transmission system and the traveling transmission system. It is branched in parallel to the work transmission system, the power of the traveling transmission system is transmitted to the wheels for traveling, the power of the work transmission system is transmitted to the working device through the continuously variable transmission, and the stepless transmission system is transmitted. An operation unit for operating the transmission is provided on the upper surface of the continuously variable transmission.
Further, the working machine of the present invention is provided with a transmission for transmitting the power of the driving unit and a working device for supplying agricultural materials to the field along the traveling direction of the machine, and the power of the transmission is transmitted for traveling. It is branched in parallel to the system and the work transmission system, the power of the traveling transmission system is transmitted to the wheels for traveling, and the power of the work transmission system is transmitted to the working device through the continuously variable transmission. An operation unit for operating the continuously variable transmission is provided on the upper surface of the continuously variable transmission, and an operation mechanism for operating the operation unit is provided at a position higher than the continuously variable transmission in the vertical direction. There is.

According to the present invention, the power of the work transmission system is transmitted to the working device through the continuously variable transmission device, and by operating the continuously variable transmission device, the maximum speed position and the lowest speed position of the continuously variable transmission committee device are transmitted. Many supply intervals and supply amounts (total amount of agricultural materials supplied in one field, amount of agricultural materials used per unit mileage, etc.) can be set between the two.
As a result, the supply interval and the supply amount can be finely and appropriately set according to the state of the field and agricultural materials, and the work accuracy of the working machine can be improved.

When the operation mechanism for operating the continuously variable transmission is provided, according to the present invention, the operation unit for operating the continuously variable transmission is provided on the upper surface portion of the continuously variable transmission, and the operation mechanism for operating the operation unit is provided. It is installed at a position higher than the continuously variable transmission in the vertical direction.
As a result, the operation mechanism and the operation unit of the continuously variable transmission are arranged at a high position from the field. The possibility of adhesion to the operation unit of the device is low, and it is possible to reduce the malfunction of the operation mechanism and the malfunction of the operation unit of the continuously variable transmission due to the adhesion of mud and the like.

In the present invention
The continuously variable transmission is provided on the right or left side of the mission case.
It is preferable that the operating mechanism is arranged so as to overlap with the mission case or the continuously variable transmission in a plan view.

According to the present invention, since the mission case or the continuously variable transmission is located under the operation mechanism, even if the mud or the like in the field is blown off by the traveling wheels or the like, the mud or the like is the mission case or the continuously variable transmission. Since it is likely to be blocked by the transmission, it is unlikely that mud or the like will adhere to the operation mechanism.

In the present invention
It is preferable that the operating mechanism is arranged on the rear side of the continuously variable transmission.

According to the present invention, even if the position of the operating mechanism is lowered while maintaining the state in which the operating mechanism is provided at a higher position than the continuously variable transmission in the vertical direction, the lower part of the operating mechanism is on the upper part of the continuously variable transmission. It does not interfere.
As a result, for example, when the floor or the like is arranged on the upper side of the operation mechanism, the position of the floor or the like can be lowered by lowering the position of the operation mechanism as described above, and the position of the floor or the like is higher than necessary. There is no need to modify the floor or the like to avoid interference with the operating mechanism.

In the present invention
The continuously variable transmission is provided on the right or left side of the mission case.
It is preferable that the transmission is provided on the right or left side of the transmission case.

When the transmission and the continuously variable transmission are provided, according to the present invention, the transmission and the continuously variable transmission are separately provided on the right and left side portions of the mission case, so that the left and right weight balance of the working machine can be balanced. Can be good.

In the present invention
The operation unit is an operation shaft that protrudes upward from the upper surface portion of the continuously variable transmission and is rotated around the first axis in the vertical direction.
An operating arm that is swingably supported around the second axis in the vertical direction of the operating mechanism and is swung by the operating mechanism.
A linking member extending horizontally from the operation axis and connected to the operation arm is provided.
It is preferable that the operation arm is swung by the operation mechanism and the operation shaft is rotationally operated via the linking member.

According to the present invention, when the operation shaft of the continuously variable transmission and the operation arm of the operation mechanism are connected by a linking member and the operation shaft of the continuously variable transmission is operated by the operation mechanism, the continuously variable transmission is performed. Since the operation axis of the device and the operation arm of the operation mechanism can be arranged at substantially the same height in the vertical direction, the operation of the operation arm of the operation mechanism of the continuously variable transmission can be performed without waste through the linking member. It is transmitted to the operation shaft, and the operation shaft of the continuously variable transmission is operated without difficulty.

In the present invention
It is preferable that the operation mechanism is provided with an actuator that generates an operation force for operating the operation unit.

According to the present invention, since the operation unit of the continuously variable transmission is operated by the actuator, the operation unit of the continuously variable transmission can be easily operated.
When various controls are performed in the continuously variable transmission, the actuator makes it easy to operate the operation unit of the continuously variable transmission in accordance with the control.

In the present invention
It is preferable that the continuously variable transmission is a hydrostatic type continuously variable transmission.

According to the present invention, since the continuously variable transmission is a hydrostatic continuously variable transmission, by operating the hydrostatic continuously variable transmission, the power transmitted to the working device is slightly changed to the high speed side. It is possible to perform fine shifts without difficulty, such as shifting to a slightly lower speed side.

In the present invention
It is preferable that the working device is a seedling planting device for intermittently planting seedlings in a field at a supply interval set in advance along the traveling direction of the machine.

In a passenger-type rice transplanter, which is a work machine, a seedling planting device (corresponding to a work device) intermittently feeds seedlings (corresponding to agricultural materials) to the field at preset supply intervals along the traveling direction of the machine. Plant in.

According to the present invention, in a passenger-type rice transplanter, which is a working machine, power is transmitted to a seedling planting device via a continuously variable transmission, so that the continuously variable transmission can finely and appropriately adjust the supply interval and supply amount of seedlings. Can be set.

In the present invention
It is preferable that the working device is a sowing device that supplies seeds to the field along the traveling direction of the machine.

In a passenger-type seeder, which is a working machine, seeds (corresponding to agricultural materials) are intermittently supplied to the field by a sowing device (corresponding to a working device) at preset supply intervals along the traveling direction of the machine. Or continuously supply seeds to the field.

According to the present invention, in a passenger-type seeder, which is a working machine, power is transmitted to the seeding device via the continuously variable transmission, so that the seed supply interval and the supply amount are finely and appropriately set by the continuously variable transmission. be able to.

It is a side view of a passenger-type rice transplanter. It is a top view of a passenger-type rice transplanter. It is a cross-sectional plan view which shows the vicinity of a traveling transmission system in a mission case. It is a cross-sectional plan view which shows the vicinity of a work transmission system in a mission case. It is a figure which shows the linkage state of a control device and each part. It is a top view of the vicinity of a continuously variable transmission and an operation mechanism. It is sectional drawing seen from the VII direction of FIG. It is a top view of the vicinity of a continuously variable transmission and an operation mechanism in the 1st alternative embodiment of the invention. It is a vertical sectional side view of the operation mechanism in the 1st alternative embodiment of the invention. It is a top view of the vicinity of a continuously variable transmission and an operation mechanism in the 2nd alternative embodiment of the invention. It is a vertical sectional side view of a continuously variable transmission and an operation mechanism in the 2nd alternative embodiment of the invention.

In the embodiment of the present invention, a passenger-type rice transplanter, which is an example of a working machine for planting in a field (paddy field), is shown.
In FIGS. 1 to 11, F indicates a forward direction, B indicates a backward direction, U indicates an upward direction, and D indicates a downward direction. R indicates the right direction, and L indicates the left direction.

(Overall configuration of passenger rice transplanter)
As shown in FIGS. 1 and 2, the passenger-type rice transplanter includes a right and left front wheel 1 (corresponding to a traveling wheel) and a right and left rear wheel 2 (corresponding to a traveling wheel). A hydraulic cylinder 4 for raising and lowering the link mechanism 3 and the link mechanism 3 is provided at the rear of the machine body 11, and a seedling planting device 5 (corresponding to a working device) is supported at the rear of the link mechanism 3.

The seedling planting device 5 includes a planting transmission case 6 arranged at predetermined intervals in the left-right direction, a rotating case 7 rotatably supported on the right and left sides of the rear portion of the planting transmission case 6, and a rotating case. It is provided with a pair of planting arms 8, a float 9, a seedling stand 10 and the like provided at both ends of the 7.

Right and left markers 12 are provided on the right and left lateral sides of the seedling planting device 5. The marker 12 can be changed to an action posture (see FIG. 1) in contact with the rice field G (see FIG. 5) and a retractable posture upward away from the rice field G, and the rotating body 12a can rotate at the tip of the marker 12. Is supported by. In the acting posture of the marker 12, the rotating body 12a of the marker 12 comes into contact with the field surface G, and the rotating body 12a of the marker 12 forms an index on the field surface G while rotating as the machine body 11 travels.

(Structure near the driver)
As shown in FIGS. 1 and 2, the aircraft 11 is provided with a driver's seat 13 and a steering handle 14 for steering and operating the front wheel 1.

The right and left support frames 16 are provided on the right and left portions of the front portion of the machine body 11, and the spare seedling rest 15 is supported by the support frame 16. A support frame 17 is connected over the upper part of the right and left support frames 16.

In the support frame 17, the measuring device 18 is attached to a portion of the support frame 17 located at the left and right center CL of the machine body 11 in a plan view. The measuring device 18 is provided with a receiving device (not shown) for acquiring position information by a satellite positioning system and an inertial measurement device (not shown) for detecting the inclination (pitch angle, roll angle) of the machine body 11. The measuring device 18 outputs positioning data indicating the position of the machine body 11.

In the rear axle case 22 that supports the right and left rear wheels 2, an inertial measurement unit 19 that measures inertial information is attached to a portion located at the left and right center CL of the airframe 11 in a plan view. The inertial measurement of the inertial measurement unit 19 and the measuring device 18 is configured by an IMU (Inertial Measurement Unit).

As a typical example of the above-mentioned satellite positioning system (GNSS: Global Navigation Satellite System), there is a GPS (Global Positioning System). The GPS is a receiving device of the measuring device 18 by using a plurality of GPS satellites orbiting over the earth, a control station that tracks and controls the GPS satellites, and a receiving device included in the target to be positioned (airframe 11). It measures the position of.

The inertial measurement unit 19 includes a gyro sensor (not shown) capable of detecting the angular velocity of the yaw angle of the machine body 11 and an acceleration sensor (not shown) for detecting accelerations in three axial directions orthogonal to each other. The inertial information measured by the inertial measurement unit 19 includes the directional change information detected by the gyro sensor and the position change information detected by the acceleration sensor.
As a result, the position of the machine 11 and the orientation of the machine 11 are detected by the measuring device 18 and the inertial measurement unit 19.

(Structure near the mission case)
As shown in FIG. 1, a mission case 20 is supported on the front portion of the airframe 11, and right and left front wheels 1 are attached to a front axle case 21 connected to the right and left lateral portions of the mission case 20. Is supported. The rear axle case 22 is supported by the rear portion of the fuselage 11, and the right and left rear wheels 2 are supported by the rear axle case 22.

As shown in FIGS. 1 and 3, the engine 23 (corresponding to the driving part) is supported on the front part of the mission case 20. A hydrostatic type continuously variable transmission 24 (corresponding to a transmission) is connected to the left lateral side of the mission case 20, and the power of the engine 23 is input to the continuously variable transmission 24 via the transmission belt 25. It is transmitted to the shaft 24a.

The continuously variable transmission 24 is configured to be steplessly variable to the neutral position, the forward side and the reverse side, and the continuously variable transmission 24 is provided by the speed change lever 30 provided on the left lateral side of the steering handle 14. Manipulate.

(Structure of running transmission system to front wheels and rear wheels)
As shown in FIG. 3, a pump 26 is connected to the right lateral portion of the mission case 20, and the pump 26 supplies hydraulic oil to the hydraulic cylinder 4. The input shaft 24a of the continuously variable transmission 24 is inserted into the mission case 20, and the transmission shaft 27 is connected to the input shaft 26a of the pump 26 and the input shaft 24a of the continuously variable transmission 24.

Inside the transmission case 20, transmission shafts 28 and 29 are supported along the left-right direction, and the output shaft 24b of the continuously variable transmission 24 is connected to the end of the transmission shaft 28. Inside the transmission case 20, a gear shifting type auxiliary transmission 31 is provided over the transmission shafts 28 and 29.

The auxiliary transmission 31 includes a low-speed gear 32 and a high-speed gear 33 connected to the transmission shaft 28, and a shift gear 34 integrally rotated and slidably fitted to the transmission shaft 29 by a spline structure. The shift gear 34 can be slid by an auxiliary shift lever (not shown) provided in the vicinity of the driver's seat 13.

In the auxiliary transmission 31, when the shift gear 34 is engaged with the low speed gear 32, the power of the transmission shaft 28 is transmitted to the transmission shaft 29 in a low speed state, and when the shift gear 34 is engaged with the high speed gear 33, the power of the transmission shaft 28 is transmitted. It is transmitted to the transmission shaft 29 in a high speed state.
When the planting work is performed in the paddy field, the auxiliary transmission 31 is operated in a low speed state, and when traveling at a high speed on a road or the like, the auxiliary transmission 31 is operated in a high speed state.

Right and left front axles 35 that transmit power to the right and left front wheels 1 are supported across the mission case 20 and the front axle case 21, and the front wheel differential device is located between the right and left front axles 35. 36 is provided. The transmission gear 37 connected to the transmission shaft 29 and the transmission gear 38 connected to the case 36a of the front wheel differential device 36 are in mesh with each other.

The output shaft 39 is supported in the rear portion of the transmission case 20 along the front-rear direction, and the bevel gear 40 connected to the case 36a of the front wheel differential device 36 and the bevel gear 39a formed in the front portion of the output shaft 39 mesh with each other. is doing.

As shown in FIGS. 1 and 3, a transmission shaft 41 is connected to the rear portion of the output shaft 39 via a universal joint (not shown), and the rear portion of the transmission shaft 41 is connected to a universal joint (not shown). Is connected to an input shaft (not shown) of the rear axle case 22 via.

With the above configuration, the power shifted by the continuously variable transmission 24 is transferred from the output shaft 24b of the continuously variable transmission 24 to the transmission shaft 28, the auxiliary transmission 31, the transmission shaft 29, the transmission gears 37 and 38, and the front wheel differential device. It is transmitted to the right and left front wheels 1 via the 36 and the front axle 35.
The power transmitted to the front wheel differential device 36 is transmitted to the right and left rear wheels via the bevel gear 40, the output shaft 39 (bevel gear 39a), the transmission shaft 41, and the transmission shaft (not shown) inside the rear axle case 22. It is transmitted to 2.

A multi-plate type brake 42 is externally fitted to the output shaft 39, and the brake 42 can be operated in the braking state by stepping on the brake pedal 43 shown in FIG. By braking the output shaft 39 with the brake 42, the front wheels 1 and the rear wheels 2 can be braked.

The diff lock member 44 is integrally rotated and slidably fitted to the left front axle 35 by a key structure. By stepping on a diff lock pedal (not shown) provided on the lower side of the driver's seat 13, the diff lock member 44 is slid and engaged with the case 36a of the front wheel diff device 36 to engage the front wheel diff device 36. It can be operated in the differential lock state.

With the above configuration, the power of the continuously variable transmission 24 (transmission device) is branched in parallel to the traveling transmission system and the work transmission system, and the power of the traveling transmission system is the front wheels 1 and the rear wheels 2 (wheels for traveling). It is in a state of being transmitted to.

(Structure of work transmission system to seedling planting device)
As shown in FIG. 4, a hydrostatic type continuously variable transmission 45 is connected to the right lateral side of the mission case 20, and the input shaft 45a of the continuously variable transmission 45 and the transmission shaft 28 are connected to each other. ing. The input shaft 45a of the continuously variable transmission 45 projects to the opposite side of the mission case 20, and the fan 46 that sends cooling air to the continuously variable transmission 45 is connected to the protruding portion of the input shaft 45a of the continuously variable transmission 45. ing.

Inside the transmission case 20, transmission shafts 47 and 48 are supported along the left-right direction, and the output shaft 45b of the continuously variable transmission 45 is connected to the end of the transmission shaft 47.

A cylindrical transmission shaft 49 is rotatably fitted to the outside of the transmission shaft 47 via a needle bearing, and a transmission gear 50 having two sets of gears is rotatable outside the transmission shaft 48 via a bearing. It is externally fitted to. The transmission gear 47a formed on the transmission shaft 47 and the large diameter gear portion of the transmission gear 50 are occluded, and the transmission gear 51 connected to the transmission shaft 49 and the small diameter gear portion of the transmission gear 50 are occluded. ..

Inside the transmission case 20, a gear shifting type non-constant speed transmission 52 is provided over the transmission shafts 48 and 49, and a bevel gear 53 is connected to the transmission shaft 48. The output shaft 54 is supported in the rear portion of the transmission case 20 along the front-rear direction, the bevel gear 55 is externally fitted to the front portion of the output shaft 54 via the planting clutch 56, and the bevel gears 53 and 55 are occluded. ..

As shown in FIGS. 1 and 4, a transmission shaft 57 is connected to the rear portion of the output shaft 54 via a universal joint (not shown), and the rear portion of the transmission shaft 57 is connected to a universal joint (not shown). It is connected to the input shaft (not shown) of the seedling planting device 5 via.

With the above configuration, the power shifted by the continuously variable transmission 24 is transferred from the output shaft 24b of the continuously variable transmission 24 via the transmission shaft 28 and the input shaft 45a of the continuously variable transmission 45 to the continuously variable transmission 45. It is in a state of being transmitted to.

The power transmitted by the continuously variable transmission 45 is transmitted from the output shaft 45b of the continuously variable transmission 45 to the transmission shaft 47 (transmission gear 47a), transmission gears 50, 51, transmission shaft 49, non-constant speed transmission device 52, and transmission. It is in a state of being transmitted to the seedling planting device 5 via the shaft 48, the bevel gears 53 and 55, the planting clutch 56, the output shaft 54, and the transmission shaft 57.

When the planting clutch 56 is operated in the transmission state, power is transmitted to the seedling planting device 5 to operate the seedling planting device 5.
When the seedling planting device 5 is activated, as shown in FIG. 2, the rotary case 7 is rotationally driven in the counterclockwise direction of FIG. 5 as the seedling pedestal 10 is driven back and forth laterally. A set of planting arms 8 alternately take out seedlings A (corresponding to agricultural materials) from the lower part of the seedling stand 10 and plant them on the rice field G. As a result, as shown in FIG. 5, the seedling A is intermittently planted on the rice field G at the preset inter-strain L1 (corresponding to the supply interval) along the traveling direction F1 of the machine body 11.
When the planting clutch 56 is operated in the cut-off state, the power to the seedling planting device 5 is cut off, the seedling planting device 5 is stopped, and the seedling pedestal 10 and the rotary case 7 are stopped.

With the above configuration, the power of the continuously variable transmission 24 (transmission) is branched in parallel to the traveling transmission system and the work transmission system, and the power of the work transmission system is the continuously variable transmission 45 and the non-constant speed transmission 52. It is in a state of being transmitted to the seedling planting device 5 (working device) through the seedling planting device 5.

(Structure of non-constant speed transmission)
As shown in FIG. 4, the non-constant speed transmission 52 includes a constant speed gear 58 and a non-constant speed gear 59 connected to a transmission shaft 49, a constant speed gear 60 externally fitted to the transmission shaft 48 so as to be relatively rotatable, and a constant speed gear 60. The non-constant speed gear 61 is provided, and the constant speed gears 58 and 60 are occluded, and the non-constant speed gears 59 and 61 are occluded.

The key-shaped speed change member 62 is slidably supported inside the transmission shaft 48, and the speed change member 62 is slidably operated to engage with one of the constant speed gear 60 and the non-constant speed gear 61. As a result, the constant speed gear 60 and the non-constant speed gear 61 with the speed change member 62 engaged can be connected to the transmission shaft 48.

The constant velocity gears 58 and 60 are circular gears having the same diameter. As a result, when the speed change member 62 is engaged with the constant speed gear 60, the power of one rotation of the transmission shaft 49 is transmitted to the transmission shaft 48 as the power of one rotation in the constant speed state of the angular velocity.

The non-constant speed gears 59 and 61 are elliptical gears, eccentric gears or non-circular gears. As a result, when the speed change member 62 is engaged with one of the non-constant speed gears 61, the power of one rotation of the transmission shaft 49 is transmitted to the transmission shaft 48 as the power of one rotation. Of these, the angular velocity changes to high and low.

(Arrangement of operation mechanism to operate continuously variable transmission)
As shown in FIGS. 6 and 7, on the lower side of the floor 88 (see FIGS. 1 and 2), the frame 67 connected to the machine body 11 is steplessly overlapped with the continuously variable transmission 45 in a plan view. It is arranged on the upper side of the transmission 45, and the operation mechanism 74 is connected to the bracket 67a of the frame 67.

The operation shaft 45c (trunnion shaft) (corresponding to the operation unit) for operating the swash plate (not shown) of the continuously variable transmission 45 projects upward from the front portion of the upper surface portion of the continuously variable transmission 45, and is operated. The shaft 45c is rotatable around the first shaft core P1 in the vertical direction.

As described later (configuration of the operation mechanism), the operation mechanism 74 and the operation shaft 45c of the continuously variable transmission 45 are connected, and the operation shaft 45 of the continuously variable transmission 45 becomes the first axis by the operation mechanism 74. It is rotated around the core P1.

As a result, the operating mechanism 74 is arranged below the floor 88 (see FIGS. 1 and 2) and is provided at a position higher than the continuously variable transmission 45 in the vertical direction. The operation mechanism 74 is arranged so as to overlap with both the mission case 20 and the continuously variable transmission 45 in a plan view.

(Structure of operation mechanism)
As shown in FIGS. 6 and 7, a flat plate-shaped substrate 75 is provided. A cylindrical boss portion 75a and a connecting portion 75b bent in a channel shape are connected to the substrate 75, and an end portion of the substrate 75 is bent and extended to form a support portion 75c. The connecting portion 75b of the substrate 75 is bolted to the bracket 67a of the frame 67.

A small fan-shaped operation arm 76 in a plan view is provided, and gear teeth 76a are formed at the end of the operation arm 76. The support shaft 76b connected to the operation arm 76 is rotatably supported by the boss portion 75a of the board 75, and the operation arm 76 swings around the second axis P2 in the vertical direction on the boss portion 75a of the board 75. It is supported freely.

The gear case 77 is bolted to the lower surface of the support portion 75c of the substrate 75, and the pinion gear 77a of the gear case 77 meshes with the gear teeth 76a of the operation arm 76. An electric motor 78 (corresponding to an actuator) is connected to the gear case 77, and the pinion gear 77a of the gear case 77 is rotationally driven by the power of the electric motor 78 via a worm gear mechanism (not shown) inside the gear case 77. To.

The arm 45d is connected to the operation shaft 45c of the continuously variable transmission 45, and the linking member 79 is connected to the upper surface portion of the operation arm 76 and the upper surface portion of the arm 45d of the continuously variable transmission 45. .. The linking member 79 has a rod shape and is adjustable in length by bolts and nuts.

The operation arm 76 of the operation mechanism 74 and the arm 45d of the continuously variable transmission 45 are arranged at substantially the same height in the vertical direction (side view). As a result, the linking member 79 extends from the operation shaft 45c (arm 45d) of the continuously variable transmission 45 in a substantially horizontal state when viewed from the side, and is connected to the operation arm 76 of the operation mechanism 74.

The channel-shaped support member 80 is connected to the substrate 75 so as to straddle the boss portion 75a of the substrate 75, and a potentiometer-type angle sensor 81 is attached to the upper surface portion of the support member 80. The detection shaft 81a of the angle sensor 81 is inserted and connected to the upper end of the support shaft 76b of the operation arm 76.

With the above configuration, the operation mechanism 74 includes a substrate 75, an operation arm 76, a gear case 77, an electric motor 78, a support member 80, an angle sensor 81, and the like.

In the operation mechanism 74, when the pinion gear 77a of the gear case 77 is rotationally driven by the electric motor 78, the operation arm 76 is oscillated around the second shaft core P2, and the continuously variable transmission 45 is operated via the linking member 79. The operation shaft 45c (arm 45d) is rotated around the first shaft core P1 to operate the continuously variable transmission 45.
By detecting the angle of the operating arm 76 with the angle sensor 81, the shifting position of the continuously variable transmission 45 is detected.

(Configuration of control system to operate continuously variable transmission)
As shown in FIG. 5, the airframe 11 is provided with a control device 63. A setting unit 64 for setting the set stock L1 is provided in the vicinity of the driver's seat 13 or the steering wheel 14, and the operation signal of the setting unit 64 is input to the control device 63.

The setting unit 64 is a model of an operation lever artificially operated by the operator, and the operator arbitrarily sets (selects) the set inter-stock L1 steplessly between the maximum interval L11 and the minimum interval L12. Can be done.

As shown in FIGS. 4 and 5, a pickup sensor type working rotation speed detection unit 65 is provided for the transmission gear 47a of the transmission shaft 47, and the detection value of the work rotation speed detection unit 65 is the control device 63. Has been entered in.

As a result, on the upstream side of the continuously variable transmission 52, the rotation speed of the transmission system (output shaft 45b of the continuously variable transmission 45) between the continuously variable transmission 45 and the continuously variable transmission 52 is changed to the working rotation speed. It is detected by the number detection unit 65 and input to the control device 63.

As shown in FIGS. 3 and 5, the transmission gear 38 is provided with a pickup sensor type traveling rotation speed detecting unit 66, and the detection value of the traveling rotation speed detecting unit 66 is input to the control device 63. There is. As a result, the traveling rotation speed detection unit 66 detects the rotation speeds of the front wheels 1 and the rear wheels 2 and inputs them to the control device 63.

The control device 63 includes a slip rate detection unit 68, a control unit 69, a timer 70, a first mileage detection unit 71, a second mileage detection unit 72, and a supply interval detection unit 73 as software.

(Detection of slip rate)
When the planting work is performed in a paddy field, slip occurs in the front wheels 1 and the rear wheels 2, so that the slip rate detection unit 68 detects the slip rate as described below.

In this case, the state in which the front wheels 1 and the rear wheels 2 have slipped means that the front wheels 1 and the rear wheels 2 slip, and the aircraft 11 advances in spite of the fact that the front wheels 1 and the rear wheels 2 are rotating. It is in a state where it has not been done.

In the planting operation, a certain first time point and a second time point after the set time has elapsed from the first time point are detected by the timer 70.
From the first time point to the second time point, the actual mileage of the machine body 11 is determined by the first mileage detection unit 71 based on the detection of the position of the machine body 11 and the direction of the machine body 11 by the measuring device 18 and the inertial measurement unit 19. Detected. In this case, the detection value of the first mileage detection unit 71 includes slip of the front wheels 1 and the rear wheels 2.

From the first time point to the second time point, the second mileage detection unit 72 is based on the outer diameters of the front wheels 1 and the rear wheels 2 and the detection values of the traveling rotation speed detecting unit 66 (rotational speeds of the front wheels 1 and the rear wheels 2). Therefore, the mileage of the machine body 11 is detected (calculated). In this case, the detection value of the second mileage detection unit 72 does not include the slip of the front wheels 1 and the rear wheels 2.

The slip rate detection unit 68 compares the detection value of the first mileage detection unit 71 with the detection value of the second mileage detection unit 72.
When the front wheels 1 and the rear wheels 2 are slipped, the detection value of the first mileage detection unit 71 becomes smaller than the detection value of the second mileage detection unit 72, and the first mileage detection unit It can be determined that the larger the difference between the detection values of the 71 and the second mileage detection unit 72, the more the front wheels 1 and the rear wheels 2 slip.

As a result, the slip rate is detected by the slip rate detection unit 68 based on the detection value of the first mileage detection unit 71 and the detection value of the second mileage detection unit 72.
When the slip ratio from the first time point to the second time point is detected, the slip rate from the second time point to the next third time point after the set time has elapsed is detected, and the slip rate is continuously detected. It is repeated.

(Setting between stocks at the start of planting work)
When planting in a paddy field, the following operations are performed.
At the start of the planting work, the operator sets (selects) the set inter-stock L1 by the setting unit 64 as described in the above-mentioned (configuration of the control system for operating the continuously variable transmission).

When the planting work is started in the state where the inter-stock L1 is set by the setting unit 64, an operation signal is output from the control unit 69 to the operation mechanism 74 (electric motor 78) corresponding to the set inter-stock L1 and the operation mechanism 74. (Electric motor 78) operates the continuously variable transmission 45 based on the detected value of the angle sensor 81.

At this stage, the slip of the front wheels 1 and the rear wheels 2 is not taken into consideration, so that the continuously variable transmission position of the continuously variable transmission 45 is uniquely determined. Is operated.

Since hydraulic oil may leak in the continuously variable transmission 45, the rotation speed of the output shaft 45b of the continuously variable transmission 45 becomes slightly lower than the rotation speed at the shifting position corresponding to the set interstock L1. The actual inter-stock L (corresponding to the supply interval) may be slightly larger than the set inter-stock L1 by this amount.

In this case, the rotation speed of the output shaft 45b of the continuously variable transmission 45 corresponds to the set inter-stock L1 based on the detection value of the working rotation speed detection unit 65 (the rotation speed of the output shaft 45b of the continuously variable transmission 45). The continuously variable transmission 45 is finely adjusted by the operation mechanism 74 (electric motor 78) from the shift position corresponding to the set inter-stock L1 so as to have the rotation speed.

(Adjustment between strains based on detection of slip rate in planting work)
As the planting work progresses, the continuously variable transmission 45 is as described below so that the actual inter-stock L becomes the set inter-stock L1 as the slip rate is detected by the slip rate detection unit 68. Is automatically operated.

As described in the previous section (setting between stocks at the start of planting work), in a state where the continuously variable transmission 45 is operated to the shift position corresponding to the set stock spacing L1, as the planting work progresses, As described in the previous section (Detection of slip ratio), the slip ratio is detected by the slip ratio detection unit 68.

Based on the detection value of the working rotation speed detection unit 65 (the rotation speed of the output shaft 45b of the stepless speed changer 45) and the detection value of the traveling rotation speed detection unit 66 (the rotation speed of the front wheel 1 and the rear wheel 2). The supply interval detection unit 73 detects the actual inter-stock L.
Specifically, the length corresponding to the slip ratio is calculated, the length corresponding to the slip is subtracted from the set inter-stock L1, and the actual inter-stock L is detected.

As a result, an operation signal is output from the control unit 69 to the operation mechanism 74 (electric motor 78) so that the actual stock-to-stock L detected by the supply interval detection unit 73 becomes the set stock-to-stock L1, and the operation mechanism 74 (electric motor). 78) operates the continuously variable transmission 45.

(Operation of non-constant speed transmission based on set stocks)
When the set inter-stock L1 set by the setting unit 64 is not particularly large or particularly small, the operator transmits power by the constant speed gears 58 and 60 in the non-constant speed transmission 52. All you have to do is set the state.

When the set inter-stock L1 set by the setting unit 64 is particularly large or particularly small, the operator slides the transmission member 62 in the unequal speed transmission 52 to operate the unequal speed gear. Of the 59 and 61, the unequal speed gears 59 and 61 suitable for the set inter-stock L1 set by the setting unit 64 may be selected (the transmission shaft 48 may be connected to the transmission shaft 48).

When the set inter-stock L1 set by the setting unit 64 is particularly large, the rotation speed of the rotating case 7 becomes too low.
As a result, in the region from the removal of the seedling A from the seedling stand 10 by the planting arm 8 to the planting of the seedling A on the field surface G by the planting arm 8, the rotation case 7 is provided by the non-constant speed transmission 52. The rotation speed can be increased a little, and the seedling A can be appropriately planted on the rice field G.

When the set inter-stock L1 set by the setting unit 64 is particularly small, the rotation speed of the rotating case 7 becomes too high.
As a result, in the region from the removal of the seedling A from the seedling stand 10 by the planting arm 8 to the planting of the seedling A on the field surface G by the planting arm 8, the rotation case 7 is provided by the non-constant speed transmission 52. The rotation speed can be made a little slower so that the seedling A can be properly planted on the rice field G.

(Structure that automatically stops the seedling stand at one end of the reciprocating lateral feed)
For example, when the seedling A is not placed on the seedling stand 10 at all, such as at the start of a day's planting work, when the seedling A is replenished on the seedling stand 10, the seedling stand 10 reciprocates. The seedling A is replenished to the seedling pedestal 10 in a state of being stopped at one end of the lateral feed.

As shown in FIG. 5, the control device 63 is provided with software for an end stop portion 82 for automatically moving and stopping the seedling rest 10 to one end of the reciprocating lateral feed. A start switch 83 for starting the end stop unit 82 is provided, and an operation signal of the start switch 83 is input to the control device 63.

An engine rotation speed detection unit 84 that detects the rotation speed of the engine 23 and a shift position detection unit 85 that detects the shift position of the continuously variable transmission device 24 (shift lever) are provided, and the engine rotation speed detection unit 84 is provided. The detected value and the detected value of the shift position detection unit 85 are input to the control device 63.
With the above configuration, when the operator operates the start switch 83, the end stop portion 82 performs the operation as described below.

When the start switch 83 is operated, the rotation speed of the power transmitted to the input shaft 45a of the continuously variable transmission 45 is detected by the detection value of the engine rotation speed detection unit 84 and the detection value of the shift position detection unit 85. ..

The continuously variable transmission 45 is operated by the operation mechanism 74 (electric motor 78) based on the rotation speed of the power transmitted to the input shaft 45a of the continuously variable transmission 45, and the detection value of the working rotation speed detection unit 65 ( The rotation speed of the output shaft 45b of the continuously variable transmission 45) is maintained at a preset low speed rotation speed.

In the above-mentioned state, the planting clutch 56 is operated in the transmission state, and the seedling pedestal 10 is driven laterally at a low speed. When the seedling pedestal 10 reaches one end of the reciprocating lateral feed, the seedling pedestal 10 is planted. The clutch 56 is operated in the disengaged state, and the seedling stand 10 is stopped at one end of the reciprocating lateral feed.

(First Different Form of Implementation of the Invention)
The operation mechanism 74 may be configured as described below.
As shown in FIGS. 8 and 9, the operation mechanism 74 includes a substrate 75, an operation arm 76, a gear case 77, an electric motor 78, a support member 80, an angle sensor 81, and the like similar to those in FIGS. 6 and 7. ..
The differences between the operation mechanism 74 shown in FIGS. 6 and 7 and the operation mechanism 74 of this section (the first alternative embodiment of the invention) will be described below.

As shown in FIGS. 8 and 9, the connecting portion 75b (see FIGS. 6 and 7) of the substrate 75 is not provided, and the end portion of the substrate 75 (support portion 75c) is bent to form the connecting portion 75d. It is formed.

On the lower side of the floor 88 (see FIGS. 1 and 2), the frame 86 connected to the machine body 11 is arranged behind the continuously variable transmission 45, and the connecting portion 75d of the board 75 is bolted to the frame 86. The operation mechanism 74 is arranged on the rear side of the continuously variable transmission 45.

The support member 80 is connected to the lower surface portion of the substrate 75, and the angle sensor 81 is attached to the lower surface portion of the support member 80. The detection shaft 81a of the angle sensor 81 is inserted and connected to the lower end of the support shaft 76b of the operation arm 76.

The operation arm 76 of the operation mechanism 74 is arranged at a position slightly higher in the vertical direction (side view) with respect to the arm 45d of the continuously variable transmission 45, and has no lower surface portion of the operation arm 76 of the operation mechanism 74. A linking member 79 is connected to the upper surface of the arm 45d of the continuously variable transmission 45. As a result, the linking member 79 extends from the operation shaft 45c (arm 45d) of the continuously variable transmission 45 in a substantially horizontal state when viewed from the side, and is connected to the operation arm 76 of the operation mechanism 74.

With the above configuration, the operation mechanism 74 is arranged on the lower side of the floor 88 (see FIGS. 1 and 2).
The upper surface portion of the operation mechanism 74 (the upper surface portion of the support portion 75c of the substrate 75) is located at a position higher than the upper surface portion of the continuously variable transmission 45 in the vertical direction, and the lower surface portion of the operation mechanism 74 (the lower surface portion of the angle sensor 81). Section) is located at a position higher than the lower surface portion of the continuously variable transmission 45 in the vertical direction, and the operation mechanism 74 is provided at a position higher than the continuously variable transmission 45 in the vertical direction. There is.

(Second alternative form of carrying out the invention)
The operation mechanism 74 may be configured as described below.
As shown in FIGS. 10 and 11, the operation mechanism 74 includes a substrate 75, an operation arm 76, a gear case 77, an electric motor 78, a support member 80, an angle sensor 81, and the like similar to those in FIGS. 6 and 7. ..
The differences between the operation mechanism 74 shown in FIGS. 6 and 7 and the operation mechanism 74 of this section (second alternative embodiment of the invention) will be described below.

As shown in FIGS. 10 and 11, the connecting portion 75b (see FIGS. 6 and 7) of the substrate 75 is not provided, and the connecting portions 75e are formed at four points of the substrate 75 (support portion 75c). There is.
On the lower side of the floor 88 (see FIGS. 1 and 2), the frame 87 connected to the machine body 11 is arranged behind the continuously variable transmission 45, and the connecting portion 75e of the board 75 is bolted to the frame 87. The operation mechanism 74 is arranged on the rear side of the continuously variable transmission 45.

The operation arm 76 is formed in a fan shape in a plan view, and the support shaft 76b is upwardly connected to the operation arm 76. The operation arm 76 is arranged on the lower side of the substrate 75, and the support shaft 76b of the operation arm 76 is swingably supported by the boss portion 75a of the substrate 75 around the second axis P2 in the vertical direction.
The gear case 77 is bolted to the upper surface of the support portion 75c of the substrate 75, and the pinion gear 77a of the gear case 77 meshes with the gear teeth 76a of the operation arm 76.

The support member 80 is connected to the lower surface portion of the substrate 75, and the angle sensor 81 is attached to the lower surface portion of the support member 80. The detection shaft 81a of the angle sensor 81 is inserted and connected to the lower end of the support shaft 76b of the operation arm 76.

The connection pin 76c is fixed upward on the upper surface of the operation arm 76. The boss portion 79a is connected to the end portion of the linking member 79, the boss portion 79a of the linking member 79 is rotatably fitted to the connection pin 76c of the operation arm 76, and the other end portion of the linking member 79 is formed. It is connected to the upper surface of the arm 45d of the continuously variable transmission 45. As a result, the linking member 79 extends from the operation shaft 45c (arm 45d) of the continuously variable transmission 45 in a substantially horizontal state when viewed from the side, and is connected to the operation arm 76 of the operation mechanism 74.

With the above configuration, the operation mechanism 74 is arranged on the lower side of the floor 88 (see FIGS. 1 and 2).
The upper surface of the operating mechanism 74 (the upper surface of the gear case 77, the upper end of the connecting pin 76c of the operating arm 76) is located at a position higher than the upper surface of the continuously variable transmission 45 in the vertical direction, and the lower surface of the operating mechanism 74 is located. The portion (lower surface portion of the angle sensor 81) is located higher than the lower surface portion of the continuously variable transmission 45 in the vertical direction, and the operation mechanism 74 is located higher than the continuously variable transmission 45 in the vertical direction. It is in a prepared state.

(Third alternative form of carrying out the invention)
In the above-mentioned (setting between stocks at the start of planting work), the continuously variable transmission 45 is operated to the shift position corresponding to the set stock-to-stock L1 based on the leak of the hydraulic oil of the continuously variable transmission 45. It is not necessary to perform the operation of fine adjustment by the operation mechanism 74 (electric motor 78).

With this configuration, when the actual inter-stock L is detected by the supply interval detection unit 73 in the above-mentioned (adjustment between stocks based on the detection of the slip ratio in the planting work), the hydraulic oil of the continuously variable transmission 45 is used. The actual inter-stock L is detected by the supply interval detection unit 73 in a state where both the leak and the slip of the front wheel 1 and the rear wheel 2 are taken into consideration.

In this case, when the leak of the hydraulic oil of the continuously variable transmission 45 is small and the slip of the front wheels 1 and the rear wheels 2 is large, the actual inter-stock L may be smaller than the set inter-stock L1 set by the setting unit 64. be.
On the contrary, when the leak of the hydraulic oil of the continuously variable transmission 45 is large and the slip of the front wheels 1 and the rear wheels 2 is small, the actual inter-stock L may be larger than the set inter-stock L1 set by the setting unit 64. ..

(Fourth Different Embodiment of the Invention)
The measuring device 18 and the inertial measurement unit 19 may be abolished.
In this configuration, when the actual mileage of the machine body 11 is detected by the first mileage detection unit 71, a rotation speed sensor (not shown) is provided on the rotating body 12a of the marker 12, and the rotation speed sensor (not shown) is provided as the machine body 11 travels. The actual mileage of the machine body 11 may be detected by detecting the number of rotations when the rotating body 12a of the marker 12 touches the field surface G and rotates.

Instead of the rotating body 12a of the marker 12, a dedicated rotating body (not shown) that rotates in contact with the field surface G is provided in the machine body 11 and the seedling planting device 5 to detect the rotation speed of the rotating body. It may be configured as follows.

(Fifth alternative form of carrying out the invention)
In the setting unit 64, instead of configuring (selecting) the set inter-stock L1 steplessly, a large number of set inter-stock L1s that are slightly different are set, and one of a large number of set inter-stock L1s is set. It may be configured to be set (selected) by the unit 64.

(Sixth Different Embodiment of the Invention)
Instead of manually operating the non-constant speed transmission 52, the non-constant speed transmission 52 automatically operates at an appropriate operation position based on the setting (selection) of the set inter-stock L1 by the setting unit 64. It may be configured to be.

(7th alternative embodiment of the invention)
In the mission case 20, the continuously variable transmission 24 may be provided on the right lateral side of the mission case 20, and the continuously variable transmission 45 may be provided on the left lateral side of the mission case 20.

Instead of the continuously variable transmission 24, a transmission (not shown) having a plurality of gear shifting positions of the gear shifting type may be provided. Instead of the hydrostatic type continuously variable transmission 45, a belt continuously variable transmission type 45 may be provided.

Inside the mission case 20, the transmission shafts 28, 29, 47, 48, 49 and the like may be configured to be arranged in the front-rear direction instead of the left-right direction.
Instead of the engine 23, an electric motor (not shown) may be used as a driving unit.

(Eighth Different Embodiment of the Invention)
The electric motor 78 may be abolished in the operation mechanism 74, and the operation mechanism 74 (operation arm 76) may be operated by a manual operation lever (not shown) operated by the operator.

The operation mechanism 74 shown in FIGS. 6 and 7 may be configured so as to overlap with the mission case 20 in a plan view and not to overlap with the continuously variable transmission 45. On the contrary, the operation mechanism 74 may be configured not to overlap with the mission case 20 in a plan view but to overlap with the continuously variable transmission 45.

In the operation mechanism 74 shown in FIGS. 6 and 7, the operation arm 76 may be abolished and the operation shaft 45c of the continuously variable transmission 45 may be directly rotated by the pinion gear 77a of the gear case 77. The output shaft of the gear case 77 (not shown) is concentrically connected to the operation shaft 45c of the continuously variable transmission 45, and the output shaft of the gear case 77 (not shown) is used to connect the operation shaft of the continuously variable transmission 45. The 45c may be configured to be rotated.

In the continuously variable transmission 45, the operation shaft 45c (operation unit) is provided downward (or sideways on the side surface portion) on the lower surface portion of the continuously variable transmission device 45, and the operation mechanism 74 is provided on the lower portion or the lower portion of the continuously variable transmission device 45. It may be provided on the lateral side.

(9th alternative embodiment of the invention)
For example, when the total amount of seedlings A to be used is determined in one paddy field, the operation of finely adjusting the actual inter-strain L is performed so that the seedlings A corresponding to this total amount are planted on the surface G in just proportion. Is possible.

When performing the above-mentioned work, if data on the area of the paddy field and data on the planting process, such as the route on which the aircraft 11 is run for the planting work, are acquired in advance, these data and The required inter-strain L is calculated based on the total amount of seedlings A.

As a result, when the worker sets (selects) the set inter-stock L1 by the setting unit 64, if the set inter-stock L1 set by the setting unit 64 deviates significantly from the above-mentioned required inter-stock L, the required inter-stock L is required. It is notified to the worker that the setting unit 64 should set the setting inter-stock L1 close to (to alert the worker and prevent misunderstanding).
When the planting operation is started in the above-mentioned state, the continuously variable transmission 45 is automatically operated so that the actual inter-stock L becomes the required required inter-stock L described above.

(10th alternative embodiment of the invention)
For example, one paddy field may be divided into small areas, and the growth state and yield of rice in the previous year may be accumulated as data in each area of the paddy field.
In the above-mentioned state, when the planting work in the same paddy field is carried out in the next year, the planting work is carried out at the actual inter-strain L suitable for each of the paddy field areas based on the detection of the measuring device 18 and the inertial measurement unit 19. It is also possible to automatically operate the continuously variable transmission 45 so that

(Eleventh alternative form of carrying out the invention)
The work equipment is supplied with seeds (corresponding to agricultural materials) intermittently to the field or continuously supplies the seeds to the field at the supply intervals L and L1 set in advance along the traveling direction F1 of the machine body 11. The working machine may be a paddy field or field-operated riding type seeding machine by using a seeding device (not shown).

Fertilizer (corresponding to agricultural materials) is intermittently supplied to the field or fertilizer is continuously supplied to the field at the supply intervals L and L1 set in advance along the traveling direction F1 of the machine body 11. By using a fertilizer supply device (not shown), the work machine may be used as a work machine for paddy fields or field operations.

The work equipment is intermittently supplied with chemicals (corresponding to agricultural materials) to the field or continuously supplied to the field at supply intervals L and L1 set in advance along the traveling direction F1 of the machine body 11. The working machine may be used as a working machine for paddy fields or field action by using a chemical supply device (not shown).

The present invention can be applied to a working machine that supplies agricultural materials such as seedlings, seeds, fertilizers and chemicals to a field.

1 Front wheel (wheel)
2 Rear wheel (wheel)
5 Seedling planting equipment (working equipment)
11 Airframe 20 Mission Case 23 Engine (Drive)
24 Continuously variable transmission (transmission device)
45 Continuously variable transmission 45c Operation axis (operation unit)
74 Operation mechanism 76 Operation arm 78 Electric motor (actuator)
79 Linking member A Seedling (agricultural material)
F1 Travel direction G Field (field)
Between L stocks (supply interval)
L1 set stock spacing (supply interval)
P1 1st axis P2 3rd axis

Claims (4)

The transmission that transmits the power of the driving part and
It is equipped with a work device that supplies agricultural materials to the field along the traveling direction of the aircraft.
The power of the transmission is branched in parallel to the traveling transmission system and the working transmission system, the power of the traveling transmission system is transmitted to the wheels for traveling, and the power of the work transmission system passes through the continuously variable transmission. It is transmitted to the work equipment
A working machine in which an operation unit for operating the continuously variable transmission is provided on the upper surface of the continuously variable transmission. The continuously variable transmission is provided on the right or left side of the mission case.
The working machine according to claim 1, wherein the transmission is provided on the right or left side of the mission case. The working machine according to claim 1 or 2, wherein the continuously variable transmission is a hydrostatic type continuously variable transmission. The working device is a seedling planting device that intermittently plants seedlings in the field at preset supply intervals along the traveling direction of the aircraft, or sowing that supplies seeds to the field along the traveling direction of the aircraft. The working machine according to any one of claims 1 to 3, which is an apparatus.

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