JP2023106914A - Agricultural working machine - Google Patents

Abstract

To provide an agricultural working machine equipped with a fertilization monitor facilitating checking a fertilization situation of a fertilization device for automatically adjusting a fertilizer application amount, in view of the fact that a sulky type seedling transplanter equipped with a variable fertilization device for detecting a fertilizer concentration (fertile degree) of a filed and automatically adjusting a fertilizer application amount has no monitor for displaying a fertilization situation of the variable fertilization device to make it impossible to check a fertilization situation.SOLUTION: In an agricultural working machine in which a seat 31 on which an operator is seated is disposed in a travel vehicle body, and a fertilization device 5 for automatically adjusting a fertilizer application amount according to a fertility degree of a field is equipped, a variable fertilization display 25a for displaying that the fertilization device 5 is in a mode of automatically adjusting the fertilizer application amount is provided in a fertilization monitor 25 disposed in front of the seat 31.SELECTED DRAWING: Figure 7

Description

TECHNICAL FIELD The present invention relates to an agricultural implement having a fertilizing device attached to a traveling vehicle body.

There is a ride-on type seedling transplanter equipped with a variable fertilizing device that detects the fertilizer concentration (fertility) in a field and automatically adjusts the amount of fertilizer applied (see, for example, Patent Document 1).

JP 2016-086722 A

However, there was no monitor for displaying the fertilization status of the variable fertilization device, and the fertilization status could not be confirmed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an agricultural machine equipped with a fertilizer application monitor that can easily check the fertilizer application status of a fertilizer applicator that automatically adjusts the amount of fertilizer applied.

The invention according to claim 1 is an agricultural work machine provided with a seat 31 on which an operator sits on a traveling vehicle body 2 and equipped with a fertilizing device 5 that automatically adjusts the amount of fertilizer applied according to the fertility of a field. This farm working machine is provided with a variable fertilization display section 25a for displaying that the fertilization device 5 is in a mode for automatically adjusting the fertilization amount on the fertilization monitor 25 provided.

According to the first aspect of the invention, the variable fertilization display section 25a for displaying that the fertilization device 5 is in the mode of automatically adjusting the fertilization amount is provided on the fertilization monitor 25 provided in front of the seat 31. The operator seated on the seat can immediately and easily recognize that the fertilizing device 5 is in the mode of automatically adjusting the fertilizing amount by looking at the variable fertilizing display portion 25a during work, thereby preventing erroneous work and improving workability. I can plan.

According to the second aspect of the invention, there is provided a seat 31 on which the operator sits on the traveling vehicle body 2, and an agricultural work machine equipped with a fertilizing device 5 for automatically adjusting the amount of fertilizer applied according to the fertility of the field. It is an agricultural working machine provided with a variable fertilization condition display section 25b for displaying a variable fertilization condition in which the fertilization device 5 automatically adjusts the amount of fertilization applied to the fertilization monitor 25 provided.

According to the second aspect of the invention, the variable fertilization status display unit 25b for displaying the variable fertilization status in which the fertilization device 5 automatically adjusts the fertilizer application amount is provided on the fertilization monitor 25 provided in front of the seat 31. The operator who is seated can immediately and easily recognize the variable fertilization condition in real time by looking at the variable fertilization condition display portion 25b during work.

The third aspect of the invention provides at least an indication that the remaining amount of fertilizer in the fertilizer hopper 60 of the fertilizer applicator 5 is low, an indication that the fertilizer application guide 63 is clogged with fertilizer, and a delivery amount for changing the fertilizer delivery amount. 3. The agricultural working machine according to claim 1 or 2, further comprising display units 25c and 25d for displaying abnormality of the fertilizing device 5 including display of abnormality of the adjustment actuator 66.

According to the invention of claim 4, the fertilization monitor 25 is provided at a position higher than the display unit 22 having at least the hour meter 22a provided below the handle 34. It is an agricultural machine.

According to the fourth aspect of the invention, the fertilization monitor 25 is provided at a position higher than the display unit 22 such as the hour meter 22a provided at the lower position of the handle 34, so that the operator seated on the seat 31 faces forward. The fertilization monitor 25 is in the field of vision when the machine is operated, and the fertilization monitor 25 can be accurately visually recognized without changing the viewpoint looking forward at the time of operation, and the machine can be operated with good maneuverability and workability.

The invention according to claim 5 is the agricultural working machine according to any one of claims 1 to 4, wherein the fertilizer application monitor 25 is provided in parallel with the straight-ahead assist monitor 26 for assisting the straight-ahead operation of the machine body.

The invention according to claim 6 is a riding-type rice transplanter 1 equipped with a seedling planting unit 4 at the rear of the traveling vehicle body 2 via an elevating link device 3. It is an agricultural work machine described.

1 is a front view of a riding-type rice transplanter according to an embodiment of the present invention; FIG. It is a top view for operation|movement description of a passenger type rice transplanter. It is a front view of the variable fertilization operation part of a passenger type rice transplanter. It is a top view of the straight-ahead assist monitor of a passenger type rice transplanter. It is a partial cross-sectional front view of the delivery|feeding-out amount adjustment motor of a passenger type rice transplanter. It is a sectional side view of the delivery|feeding-out amount adjustment motor of a passenger type rice transplanter. It is a front view of the fertilization monitor of a passenger type rice transplanter. It is a top view for operation|movement description of the field of a riding-type rice transplanter. It is a side view of a riding-type rice transplanter showing another embodiment of the present invention. It is a top view of the principal part which shows the same other embodiment. FIG. 11 is a rear view for explaining the action of the essential parts of the other embodiment; It is a top view of the principal part which shows the same other embodiment. (A) and (B) are rear cross-sectional views of essential parts showing other embodiments. FIG. 11 is a back cross-sectional view for explaining the action of the main part showing the other embodiment; It is a side view of the riding-type rice transplanter which shows other embodiment.

Preferred embodiments of the present invention will be described below with reference to the drawings.

<Overall composition>
FIG. 1 is a front view of a riding-type rice transplanter equipped with a fertilizing device, which is an example of the agricultural working machine of the present invention, and FIG. 2 is a plan view for explaining the operation. In this riding-type rice transplanter 1 with a fertilizing device, a seedling planting unit 4 is attached to the rear side of a traveling vehicle body 2 via an elevating link device 3 so as to be able to move up and down, and a main body of a fertilizing device 5 is mounted on the rear upper side of the traveling vehicle body 2. is provided. The left and right directions of the riding-type seedling transplanter are referred to as left and right, respectively, and the forward and backward directions are referred to as front and rear, respectively. Description will be made below with reference to FIGS. 1 to 8. FIG.

<Running body 2>
The traveling vehicle body 2 is a four-wheel drive vehicle having a pair of left and right front wheels 10, 10 and a pair of left and right rear wheels 11, 11 as drive wheels. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles protruding outward from respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10, 10 are attached respectively. A front end portion of a main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, a rear wheel gear case 18, and a rear wheel gear case 18 are mounted around a rear wheel rolling shaft provided horizontally in the front-rear direction at the center portion of the rear end of the main frame 15. Rear wheels 11, 11 are attached to rear wheel axles projecting outward from rear wheel gear cases 18, 18.

The engine 20 is mounted on the front part of the fuselage, and the rotational power of the engine 20 is transmitted to the mission case 12 via the belt transmission device and the HST. The rotational power transmitted to the mission case 12 is changed in speed by the transmission in the case 12, and then separated into traveling power and external power and taken out. A part of the driving power is transmitted to the front wheel final cases 13, 13 to drive the front wheels 10, 10, and the rest is transmitted to the rear wheel gear cases 18, 18 to drive the rear wheels 11, 11. The external extraction power is transmitted to the planting clutch case provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft, and to the fertilizing device 5 by the fertilizing transmission mechanism. be.

The rear part of the traveling vehicle body 2 is covered with a rear cover 30, and a seat 31 is installed thereon. A front cover 32 containing various operating mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10, 10 is provided above the cover. Horizontal floor steps 35 are provided on the left and right sides of the lower ends of the rear cover 30 and the front cover 32 . The floor step 35 is partly lattice-shaped so that the mud on the shoes of the worker walking on the step 35 falls on the field. The rear part above the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

An operation panel 21 on which a monitor and various operation tools are arranged is provided below the handle 34 on the upper surface of the front cover 32 . The monitor of the operation panel 21 has a display section 22 such as an hour meter 22a. The display unit 22 may be any display means other than the monitor, such as a lamp, a meter, a liquid crystal display device, or the like.

At the front end of the traveling vehicle body 2, a front strut 23, the base of which is fixed to the vehicle body, is erected upward.

A GPS 24 is provided on the upper part of the front strut 23 .

A fertilization monitor 25 and a straight-ahead assist monitor 26 are provided side by side on an intermediate frame 23a provided in the upper and lower intermediate portions of the front support column 23. Facing the rear of the aircraft.

A center marker 27 is provided at the front end of the traveling vehicle body 2 at the upper end of a center marker strut 27a extending forward and upward.

The fertilization monitor 25, the straight-ahead assist monitor 26, and the center marker 27 are arranged in front at a position higher than the display unit 22 such as the hour meter 22a, and the operator seated on the seat 31 faces forward and steers. The fertilization monitor 25, the straight-ahead assist monitor 26 and the center marker 27 can be accurately visually recognized without changing the viewpoint from which the driver is looking forward during operation. Therefore, the airframe can be controlled with good maneuverability and workability.

A fertilization monitor 25 and a straight assist monitor 26 are located in front of the display unit 22 such as the hour meter 22a, and a center marker 27 is located in front of the fertilization monitor 25 and the straight assist monitor 26. FIG. Therefore, since the center marker 27 is located at the forefront, it is easy to operate straight ahead.

Next, the straight assist monitor 26 will be described. The straight assist monitor 26 and the fertilization monitor 25 share the same monitor (only the notation is changed), thereby suppressing the production cost. The fertilization monitor 25 will be described in detail in the section of the fertilization device 5 described later.

The riding-type rice transplanter 1 with a fertilizing device receives a signal from a positioning satellite through the GPS 24 in a field, and performs rice planting and fertilization while calculating current position information using the satellite positioning system.

The straight assist monitor 26 is equipped with a start point acquisition and left guide light 26L, an end point acquisition and right guide light 26R, a straight travel assist lamp 26a and a GPS reception sensitivity lamp 26b.

When the machine is placed in the field and the straight assist lever located below the handle 34 is operated at the planting start position on one of the ridges, the GPS 24 receives the signal from the positioning satellite and the current position is determined by the satellite positioning system. Information is calculated to obtain the planting start position (point A), the start point is obtained, and the left guide light 26L is turned on.

Then, the aircraft advances straight to the other ridge to carry out rice planting and fertilization work, and when the straight advance assist lever is operated downward at the planting end position on the other ridge, the signal from the positioning satellite is received by the GPS 24. Upon receiving the signal, the satellite positioning system calculates the current position information, acquires the planting end position (point B), acquires the end point, and turns on the right guide light 26R.

The straight assist lever can be operated downward from the intermediate position and upward from the intermediate position, and automatically returns to the intermediate position when not operated.

When the machine body is turned to start rice planting work and fertilizing work, if the straight assist lever is operated upward, the start point acquisition and left guide light 26L and the end point acquisition and right guide light 26R are turned off. , the straight-ahead assist lamp 26a is turned on, and a signal from a positioning satellite is received by the GPS 24 in the field, and the current position information is calculated by the satellite positioning system. , and if the aircraft deviates to the left from the imaginary straight line, the end point is acquired and the right direction guide light 26R is turned on to instruct the operator to follow the imaginary straight line. is instructed to operate to the right, and conversely, when the aircraft deviates to the right from the virtual straight line, the start point acquisition and the left direction guide light 26L are turned on, and the operator is instructed to turn the steering wheel 34 so as to follow the virtual straight line. Instruct to turn left.

Therefore, when the operator steers the aircraft according to the support of the straight assist monitor 26 acquisition of the start point, the left direction guide light 26L and the end point acquisition, and the right direction direction guide light 26R while looking at the front of the aircraft, the planting start position and the planting end position. Rice planting work and fertilization work can be performed by moving the machine body straight along the imaginary straight line along the straight line connecting the positions.

In the same way, after turning the fuselage on the edge of a ridge, the pilot obtains the start point of the straight assist monitor 26, obtains the left guide light 26L and the end point, and supports the right guide light 26R while looking ahead of the fuselage. The machine can be steered to go straight and perform rice planting and fertilization in a reciprocating process.

The GPS reception sensitivity lamp 26b indicates that the GPS reception sensitivity is stronger as the width of the lamp increases from the narrower lamp at the bottom to the wider lamp at the top.

The lifting link device 3 has a parallel link structure, and includes one upper link 40 and a pair of left and right lower links 41 , 41 . These links 40, 41, and 41 are rotatably attached at their base sides to a rear sight gate-shaped link base frame 42 erected at the rear end of the main frame 15, and a vertical link 43 is connected to their tip sides. ing. A connecting shaft 44 rotatably supported by the seedling planting section 4 is inserted into and connected to the lower end of the vertical link 43 , and the seedling planting section 4 is connected to the seedling planting section 4 so as to roll around the connecting shaft 44 . An elevating hydraulic cylinder 46 is provided between the link base frame 42 and the vertical link 43, and by expanding and contracting the cylinder 46 with hydraulic pressure, the elevating link device 3 rotates up and down, and the seedling planting section 4 moves. It goes up and down while maintaining a nearly constant posture.

Left and right spare seedling mounting bases 28 and left and right line drawing markers 29 are provided on the left and right sides of the front portion of the traveling vehicle body 2 .

<Seedling planting part 4>
The seedling planting part 4 is composed of 8 rows of planting, and a transmission case 50 which also serves as a frame reciprocates left and right on which the mat seedlings are placed to supply the seedlings one by one to the seedling extraction openings 51a of each row, and to supply the seedlings for one horizontal row. A seedling platform 51 for transferring seedlings downward by a seedling feeding belt for supplying all the seedlings to the seedling outlet 51a, and a seedling planting device 52 for planting the seedlings supplied to the seedling outlet 51a in a field are provided.

A center float 55 is provided in the center of the lower part of the seedling planting part 4, and side floats 56 are provided on both left and right sides thereof. When the machine body is advanced with these floats 55 and 56 grounded on the muddy surface of the field, the floats 55 and 56 slide while leveling the muddy surface, and seedlings are planted by the seedling planting device 52 on the muddy surface. .

Each of the floats 55 and 56 is rotatably mounted so that the front end side can move up and down according to the unevenness of the surface soil surface of the field. The seedling planting depth is always kept constant by switching the hydraulic valve for controlling the lifting hydraulic cylinder 46 according to the detection result to move the seedling planting unit 4 up and down.

A ground leveling rotor 57, which is an example of a ground leveling device, is attached to the seedling planting unit 4. As shown in FIG.

<Fertilizer 5>
The fertilizing device 5 feeds out the granular fertilizer stored in the fertilizer hopper 60 by a fixed amount by the feeding portion 61, guides the fertilizer by the fertilizing hose 62 to the fertilizing guides 63 attached to the left and right sides of the floats 55, 56, and fertilizes. A grooving body 64 provided on the front side of the guide 63 allows the seedlings to fall into a fertilizing structure formed in the vicinity of the side portion of the seedling planting row.

Air generated by a blower 65 driven by an electric blower motor is blown into the fertilizing hose 62 via an air chamber 59 elongated in the left-right direction, and the fertilizer in the fertilizing hose 62 is forcibly transported by wind pressure. It's becoming

The fertilizing device 5 is a variable fertilizing machine that automatically adjusts the amount of fertilizing according to the fertility of the field.

That is, a delivery amount adjustment motor 66, which is a delivery amount adjustment actuator, is arranged on the right side of the seat 31 and between the delivery sections 61 that are separated from each other on the front side of the fertilizer hopper 60. change the amount.

The configuration for changing the speed of the driving portion of the feed-out portion 61 by the feed-out amount adjusting motor 66 may be a configuration in which a gear type transmission is operated to change speed, or a configuration in which the link ratio of the link mechanism for driving the feed-out portion 61 is changed to change the speed.

In this embodiment, the driven gear 66b is driven to rotate by the drive gear 66a of the feed amount adjusting motor 66, and the feed portion 61 is driven by the rotation of the feed rod 66c rotated by the driven gear 66b. Shift by changing the link ratio.

A cylindrical portion 66e is provided on the front side of a cover 66d of the feed amount adjusting motor 66, and a weld nut 66f is provided in the cylindrical portion 66e by insert molding.

The grease nipple 67 is attached to the cover 66d by inserting the bolt portion 67a at the inner end thereof into the cylindrical portion 66e from the front side of the cover 66d and fastening it to the weld nut 66f.

An opening 66g at the inner end of the cylindrical portion 66e faces the meshing portion between the drive gear 66a and the driven gear 66b. When grease is injected from the grease injection portion 67b at the outer end of the grease nipple 67, the injected grease is injected into the drive gear 66a. and the driven gear 66b to properly lubricate the drive gear 66a and the driven gear 66b, which are the driving parts of the extension amount adjusting motor 66. As shown in FIG.

Therefore, the driving portion of the extension amount adjusting motor 66 can be appropriately lubricated, so that proper driving and improved durability can be achieved. In addition, it is possible to prevent rust and sticking due to the fertilizer peculiar to the fertilizer applicator.

In addition, a variable fertilizer application operation part 68 is arranged between the feed-out parts 61 on the left side of the seat 31 and on the front side of the fertilizer hopper 60 .

The variable fertilizing operation part 68 is attached to an operation part holding member 69 that connects the adjacent tapered parts 60a that guide the fertilizer to the delivery parts 61 below the fertilizer hopper 60 and become narrower toward the bottom.

The variable fertilizing operation unit 68 is provided with a variable fertilizing switch 68a for turning on/off the operation of the feeding amount adjusting motor 66, a fertilizing adjustment dial 68b for adjusting the amount of fertilizer applied, and a blower switch 68c for turning on/off the operation of the blower 65. .

The variable fertilization switch 68a is a switch for switching between a state in which the feeding amount adjustment motor 66 is turned on to perform variable fertilization and a state in which the feeding amount adjustment motor 66 is turned off to perform fixed amount fertilization.

When performing variable fertilization, the fertilization adjustment dial 68b has a reduced position in which variable fertilization is applied in a state in which less than the standard amount is applied, a standard position in which variable fertilization is applied in a state in which fertilization is applied in the standard amount, and a standard amount in which more than the standard amount is applied. Switch to the increase position for variable fertilization in the state.

The fertilization monitor 25 also has a variable fertilization lamp 25a, which is a variable fertilization display unit that lights up when variable fertilization is performed by turning on the operation of the feeding amount adjustment motor 66 with a variable fertilization switch 68a, and a variable fertilization lamp 25a. A variable fertilization status light 25b, a left indicator light 25c, and a right indicator light 25d, which are variable fertilization status display units that display the fertilization status (increase/decrease status of the amount of fertilizer applied) in real time, are provided.

The variable fertilization light 25a lights green when variable fertilization is performed by turning on the operation of the feeding amount adjustment motor 66 with the variable fertilization switch 68a (variable fertilization mode), and the operator seated on the seat 31 can change the fertilization during work. By seeing the fertilizing light 25a, it is possible to immediately and easily recognize that the fertilizing device 5 is in the mode of automatically adjusting the amount of fertilizing, thereby preventing erroneous operations and improving workability.

The variable fertilization status lights 25b are provided so that the widths of the lower, middle, and upper lights gradually become wider. , the upper lamp lights up, and the operator can clearly recognize the variable fertilization situation in real time.

The lighting indications of the left indicator lamp 25c and the right indicator lamp 25d act as warning lamps as follows.

When the fertilizer remaining amount sensor provided in the fertilizer hopper 60 detects that the remaining amount of fertilizer is low, the left indicator lamp 25c lights up in red.

When the fertilizer clogging sensor provided in the fertilizer application guide 63 detects clogging with fertilizer, the right indicator lamp 25d lights up in red.

When the motor rotation sensor provided in the feed amount adjustment motor 66 does not detect the operation of the feed amount adjustment motor 66 even though the control device issues an operation command to the feed amount adjustment motor 66, the feed amount adjustment motor 66 is abnormal or the electric wire is detected. , and both the left indicator lamp 25c and the right indicator lamp 25d are lit in red.

When the grease sensor provided in the driving portion of the extension amount adjusting motor 66 detects the lack of grease, both the left indicator lamp 25c and the right indicator lamp 25d blink in red.

When an in-pull product such as a drug applicator is attached, both the left indicator lamp 25c and the right indicator lamp 25d are lit in yellow during operation.

In addition, it is also possible to make it possible to know to which position the fertilization adjustment dial 68b is operated by the lighting patterns of the left indicator lamp 25c and the right indicator lamp 25d.

The fertility of the field is measured by a small airplane such as a drone equipped with a fertility sensor operated by a remote control device such as a tablet terminal before rice planting and fertilization. Then, a fertility map of the field is created by a remote control device such as a tablet terminal, and the fertility map data is transmitted to the riding rice transplanter 1 with a fertilizing device by a communication device. The fertility map data is recorded in the controller.

The procedure for creating a field fertility map is as follows.

First, the flight route R of the small airplane is described and added to the field map of the remote control device such as a tablet terminal, the farm field map with the added flight route R is transmitted to the small airplane by the communication device, and a flight command is issued to the small airplane. out.

The flight route R designates a route along which the riding rice transplanter 1 with the fertilizing device performs the rice planting and fertilizing operations in the reciprocating process.

The small airplane flies along the flight route R of the received field map, detects the fertility of the field with the fertility sensor, and adds the fertility data to the field map.

The small airplane transmits the farmland map to which the fertility data is added to a remote control device such as a tablet terminal through a communication device.

A remote control device such as a tablet terminal creates a field fertility map from the field map to which the received fertility data is added.

A method for preparing a fertility map of a field is to set a width W2 wider than the body width W1 of the seedling planting section 4 of the riding rice transplanter 1 with the fertilizing device as a short side, and proceed with planting of the riding rice transplanter 1 with the fertilizing device. A rectangular block that is long in the direction is regarded as one fertility data block, and the fertility data in the fertility data block is averaged to determine the fertility data block into four levels of fertility, and the field is divided into four levels. Let it be a map of fertility data blocks. For example, fertility data blocks I, II, III, and IV, where fertility data block I is the least fertile, fertility data block II is more fertile than fertility data block, and fertility data block III is Fertility Data Block II is more fertile, and Fertility Data Block IV is the most fertile.

Then, a fertility map of the field is transmitted from a remote control device such as a tablet terminal to the riding-type rice transplanter 1 with the fertilizing device through the communication device, and the riding-type rice transplanter 1 with the fertilizing device records the fertility map data in the control device. do.

Next, the fertilizing work when the riding-type rice transplanter 1 with the fertilizing device performs the rice planting work and the fertilizing work in the field will be described in detail.

The riding-type rice transplanter 1 with a fertilizing device receives signals from positioning satellites through the GPS 24 and performs rice planting and fertilization while calculating current position information using the satellite positioning system.

Then, the fertility data block I, II, III or IV at the current position is read from the fertility map data recorded in the control device, and fed according to the fertility data block I, II, III or IV at the present position. The amount adjustment motor 66 is operated to change the amount of fertilizer delivered by the delivery portion 61 .

That is, when the current position is the fertility data block I, the fertility is the lowest, so the feeding amount adjusting motor 66 is operated to maximize the fertilizer feeding amount of the feeding section 61 . At this time, all of the lower, middle and upper lights of the variable fertilization status lights 25b are turned on, and the operator can clearly recognize in real time that the variable fertilization status is spreading with the largest amount of fertilization.

If the current position is the fertility data block II, the fertility is slightly lower than the standard, so the feeding amount adjusting motor 66 is operated to make the fertilizer feeding amount of the feeding section 61 slightly larger than the standard. At this time, the variable fertilization status lights 25b light up in the lower and middle stages, and the operator can clearly recognize in real time that the variable fertilization status is spraying near the standard amount of fertilization.

When the current position is the fertility data block III, the fertility is slightly higher than the standard, so the feeding amount adjusting motor 66 is operated to make the fertilizer feeding amount of the feeding section 61 slightly smaller than the standard. At this time, the variable fertilization status lights 25b light up in the lower and middle stages, and the operator can clearly recognize in real time that the variable fertilization status is spraying near the standard amount of fertilization.

If the current position is the fertility data block IV, the fertility is the highest. At this time, only the lower lamp of the variable fertilization status lamp 25b lights up, and the operator can clearly recognize in real time that the variable fertilization status is the smallest amount of fertilization.

Then, a rectangular block whose short side is a width W2 wider than the body width W1 of the seedling planting portion 4 of the riding rice transplanter 1 with a fertilizing device and is long in the planting advancing direction of the riding rice transplanter 1 with a fertilizing device is combined into one block. Since the fertility data blocks are I, II, III or IV, one fertility data block I, II, III can be set while the riding-type rice transplanter 1 with the fertilizing device is proceeding while performing rice planting work and fertilization work. Alternatively, the fertilization work is performed by a predetermined distance within the IV, and stable variable fertilization work can be performed.

Also, when traveling along the boundary of the fertility data blocks I, II, III, or IV, the amount of fertilizer applied should be the average value of the fertility data blocks I, II, III, or IV on both the left and right sides of the boundary. The feed-out amount adjustment motor 66 is operated to adjust the feed-out amount of the fertilizer from the feed-out portion 61 . Thus, stable variable fertilization is achieved even when traveling through the boundaries of fertility data blocks I, II, III or IV.

In addition, during rice planting and fertilization on the headlands along the ridges where the aircraft turns, the fertilization amount should be the average value of the fertility data blocks I, II, III, or IV for the entire headlands. The amount adjustment motor 66 is operated to adjust the amount of fertilizer delivered by the delivery section 61 . Therefore, fertilization can be stably performed in the headland where the turning of the machine body deepens the depth of the field and the fertilizer situation fluctuates greatly.

<Other embodiments>
(1) In the above-described first embodiment, an example of injecting grease into the drive gear 66a and the driven gear 66b, which are the drive portions of the feed amount adjustment motor 66, was shown. Oil may be supplied to the gear 66a, the driven gear 66b, and the link mechanism that drives the feeding portion 61. FIG.

That is, an oil tank and an oil supply actuator such as an electric oil supply pump are provided in the vicinity of the feed amount adjustment motor 66 at the rear portion of the traveling vehicle body 2, and the oil in the oil tank is supplied by the nozzle to the feed amount adjustment motor 66. Oil is supplied to the drive gear 66a, the driven gear 66b, and the link mechanism that drives the feeding portion 61. As shown in FIG.

A rotation sensor is provided in the feeding portion 61, and the control device operates the feeding actuator to supply oil every time the feeding portion 61 reaches a predetermined number of revolutions.

Also, every time a predetermined number of fertility data blocks I, II, III or IV are passed, the control device actuates the oil supply actuator to supply oil.

In addition, every time the hour meter 22a reaches a predetermined time, the controller operates the oil supply actuator to supply oil.

Further, when the fertilization adjustment dial 68b is operated to switch between the decrease position, the standard position and the increase position, the above timing of oil supply is changed according to the operation position. That is, when the fertilization adjustment dial 68b is set to the decrease position, the oil supply timing is delayed, and when the fertilization adjustment dial 68b is set to the increase position, the oil supply timing is advanced.

At the start of the rice planting work, the seedling mounting table 51 is operated to move to one end on the left and right sides. This operation is detected and recognized as the start of work, and the control device operates the oil supply actuator to supply oil.

At the end of the work, an operation is performed to discharge the fertilizer remaining in the fertilizer hopper 60. When this operation is detected and the end of the work is recognized, the control device operates the oil supply actuator to supply oil.

Further, when the amount of extension of the extension portion 61 exceeds a predetermined amount, the oil supply timing is advanced.

A manual switch is provided on the operation panel 21, and the operator operates the manual switch to arbitrarily operate the refueling actuator to refuel.

Further, the timing for operating the oil supply actuator to supply oil is only when the feed amount adjustment motor 66 is operating and the drive gear 66a and the driven gear 66b, which are the drive units, are rotating. Since the drive unit is rotating, the oil spreads over the entire drive unit.

(2) FIG. 9 shows a method for users who have improved the accuracy of variable fertilization by the above fertility data block I, II, III or IV by providing a fertility sensor 70 for detecting the fertility of the field for further accuracy. It is an embodiment of a riding-type rice transplanter 1 with a fertilizing device that enables variable fertilization with a high

That is, a fertility sensor 70 is pivotally supported by a pivot shaft 73 at the lower end of a fertility sensor support frame 72 whose base is pivotally supported by a pivot shaft 71 in the lateral direction of the machine body. A connecting link 74 connects the middle portion of 72 and the lower link 41 of the lifting link device 3 .

Therefore, since the fertility sensor support frame 72 moves vertically in conjunction with the vertical movement of the lower link 41 of the elevating link device 3, the fertility sensor 70 always keeps the planting depth of the seedlings constant during rice planting and fertilizing operations. In conjunction with the automatic elevation control of the seedling planting unit 4 that maintains the grounding, the seedling planting unit 4 is not working when the machine is turning or traveling on the road. When it is raised to the position, it becomes the raised storage position.

Also, the fertility sensor 70 is pivoted on the lower end of the fertility sensor support frame 72 by a pivot shaft 73, and is biased by a spring so that the fertility sensor 70 is in a horizontal state.

Further, the fertility sensor 70 is provided on a ship-shaped (V-shaped) grooved body 70a with a sharp tip.

Further, the connecting link 74 is made of a spring material and bends to soften the soil resistance when the fertility sensor 70 receives a large soil resistance.

Therefore, the fertility sensor 70 (groove 70a) advances by cutting the soil, the soil resistance becomes low load, it follows the irregularities of the field, and appropriate fertility detection can be performed with less load.

Further, since the leveling rotor 57 and the center float 55 are arranged behind the fertility sensor 70, the grooves of the mud surface by the fertility sensor 70 are leveled cleanly.

Then, the fertility sensor 70 detects the fertility of the field in real time, and the control device controls the feeding amount adjustment motor 66 so that an appropriate amount of fertilizer is applied according to the fertility at the current position where the machine is traveling. It is operated to change the amount of fertilizer delivered by the delivery portion 61 .

(3) In the previous section (2), an example in which the fertility sensor 70 is separately provided is shown, but as shown in FIGS. The leveling rotor 57 may be used as a fertility sensor.

That is, left and right mounting pins 55b (mounting bolts) for mounting the left and right rear rotation fulcrum plates 55a of the center float 55 to the center float 55 are made of stainless steel, and when the nuts 55c on the upper surface side of the center float 55 are tightened, the electric wires 75 of both poles are connected together. By tightening, the left and right mounting pins 55b are used as fertility sensors.

By positioning the lower end of the mounting pin 55b (mounting bolt) above the bottom surface of the center float 55, the mounting pin 55b (mounting bolt) does not leave a mark.

In addition, a plate 77 made of stainless steel, to which electric wires 75 of both poles are connected, is affixed to the left and right central position of the bottom surface of the left and right side floats 56 which are arranged behind the left and right rear wheels 11 and level the wheel traces of the left and right rear wheels 11 to increase fertility. sensor.

The fertility of the mud picked up by the driving rotation of the rear wheels 11 is detected, and the fertility of the soil can be appropriately detected.

Further, in the riding-type rice transplanter 1 with a fertilizing device provided with a plurality of land leveling rakes 76a and 76b, the two narrow land leveling rakes 76a are connected to the electric wires 75 of both poles, and the two narrow land leveling rakes 76a are connected to each other. is the fertility sensor.

Further, a fertility sensor is formed by connecting electric wires 75 of both poles to the grooves 64a made of stainless steel at the left and right ends of the fertilizing device 5. As shown in FIG.

Further, electric wires 75 of both poles are connected to stainless steel groove bodies 64b of the fertilizer applicator 5 provided on the left and right side floats 56 which are arranged behind the left and right rear wheels 11 and level the wheel traces of the left and right rear wheels 11. A fertility sensor.

The fertility of the mud lifted by the driving rotation of the rear wheels 11 can be detected, and the fertility of the soil can be appropriately detected.

Further, in the leveling rotor 57 consisting of the central leveling rotor 57a and the left and right leveling rotors 57b, the inner side of the center leveling rotor 57a left and right ends of the left and right transmission case 78 that transmits the rotational drive between the center leveling rotor 57a and the left and right leveling rotors 57b. Left and right plates 79 made of stainless steel to be fitted in the soil are provided, and electric wires 75 of both poles are connected to the left and right plates 79 to form a fertility sensor.

The left and right plates 79 are bent inward so as to be inserted behind the ground leveling portion of the central ground leveling rotor 57a. Since the central ground leveling rotor 57a scrapes the soil and gets into the ground after leveling the ground, the resistance received from the soil can be reduced.

The left and right plates 79 are arranged below the left and right transmission case 78 and have a V-shaped groove that can be formed. Grooves can be formed in the topsoil that is not leveled by the leveling rotor 57 to measure fertility over a wide range. Further, even if a load is applied to the V-shaped portion when the groove is formed, it is supported by the lower surface of the left/right transmission case 78, thereby improving rigidity.

On the upper surface of the left/right transmission case 78, a recessed holding portion 78a is provided to hold the electric wire 75 along. A through hole 78b is provided in the recessed lower portion of the recessed holding portion 78a, and a fastener 81 such as a binding band for fastening the electric wire 75 held along the recessed holding portion 78a is inserted into the through hole 78b. to fix the electric wire 75 to the recessed holding portion 78a.

(4) FIG. 15 is another embodiment of the fertility sensor 70. FIG.

That is, the fertility sensor 70 is provided at the lower end of a fertility sensor support frame 72 whose base is pivotally supported on the main frame 15 by a pivot shaft 71 extending in the lateral direction of the machine body. , the front wheels 10 have penetrated into the advanced soil. Therefore, since the front wheels 10 are in the advanced soil, the soil resistance can be reduced.

The fertility sensor support frame 72 is provided with a linking mechanism so as to move vertically in conjunction with the vertical movement of the lower link 41 of the elevating link device 3. In conjunction with the automatic elevation control of the seedling planting unit 4 that maintains the depth always constant, the seedlings can always land on the field at an appropriate depth and can perform appropriate fertility detection, and seedlings can be planted when the machine is turning or traveling on the road. When the attaching portion 4 is raised to the non-working position, it becomes the raised storage position.

The base of the fertility sensor support frame 72 is pivotally supported on the main frame 15 by a pivot shaft 71 extending in the lateral direction of the machine body, and the lower end of the fertility sensor support frame 72 is biased by a spring in a direction in which it penetrates into the soil. The sensor 70 is configured to follow.

The fertility sensor 70 has a structure in which a sensor portion 80b is provided on the rear side of the elastic member 80a, the base portion of which is fixed to the lower end of the fertility sensor support frame 72, in the traveling direction, and the elastic member 80a reduces the load on the soil. Together, it protects the sensor section 80b.

Therefore, since the fertility sensor 70 is immersed in the soil where the front wheels 10 are advanced, the load of the soil resistance becomes low and it follows the unevenness of the field, so that the fertility sensor 70 can detect the appropriate fertility with less load. .

1 riding type rice transplanter 2 traveling vehicle body 3 lifting link device 4 seedling planting unit 5 fertilizing device 22 display unit 22a hour meter 25 fertilization monitor 25a variable fertilization display unit (variable fertilization lamp)
25b Variable fertilization status display unit (variable fertilization status light)
25c Display (left display)
25d display section (right display section)
26 straight assist monitor 31 seat 34 handle 60 fertilizer hopper 63 fertilizer application guide 66 delivery amount adjustment actuator (delivery amount adjustment motor 66)

Claims (6)

An agricultural implement equipped with a seat (31) on which an operator sits on a traveling vehicle body (2) and a fertilizing device (5) that automatically adjusts the amount of fertilizer applied according to the fertility of a field, in front of the seat (31) An agricultural machine, characterized in that a fertilizing monitor (25) is provided with a variable fertilizing display section (25a) for displaying that the fertilizing device (5) is in a mode for automatically adjusting the amount of fertilizing. An agricultural implement equipped with a seat (31) on which an operator sits on a traveling vehicle body (2) and a fertilizing device (5) that automatically adjusts the amount of fertilizer applied according to the fertility of a field, in front of the seat (31) An agricultural machine, characterized in that a variable fertilization status display section (25b) for displaying a variable fertilization status in which the fertilization device (5) automatically adjusts the amount of fertilizer applied is provided on the provided fertilization monitor (25). At least an indication that the fertilizer hopper (60) of the fertilizer applicator (5) has run out of fertilizer, an indication that the fertilizer application guide (63) is clogged with fertilizer, and a delivery amount adjustment actuator that changes the fertilizer delivery amount. 3. A farm working machine according to claim 1 or 2, further comprising a display unit (25c, 25d) for displaying an abnormality of the fertilizing device (5), including a display of the abnormality of (66). 4. A fertilization monitor (25) is provided at a position higher than a display (22) having at least an hour meter (22a) provided below the handle (34). 1. The agricultural working machine according to Item 1. 5. A farming machine according to any one of claims 1 to 4, characterized in that the fertilization monitor (25) is provided in parallel with a straight-ahead assist monitor (26) for assisting a straight-ahead operation of the machine body. The agricultural work machine is a ride-on type rice transplanter (1) equipped with a seedling planting section (4) via an elevating link device (3) at the rear of the traveling vehicle body (2). The agricultural working machine according to any one of items 1 and 2.