JP2020168017A - Work vehicle - Google Patents

Abstract

To provide a work vehicle for supplying a set fertilizer application amount to a farm field.SOLUTION: A work vehicle includes a fertilizer applicator for supplying a fertilizer to a farm field, and an information processing device 150b capable of setting a fertilizer application amount of the fertilizer. The fertilizer applicator includes a fertilizer tank, a delivery mechanism for delivering the fertilizer from the fertilizer tank, a fertilizing hose for delivering the fertilizer from the delivery mechanism, and a fertilizer supply part capable of detaching the fertilizing hose, and dropping the fertilizer conveyed through the fertilizing hose into the farm field, and the information processing device 150b can input the weight of the fertilizer delivered to the fertilizing hose and input the fertilizer application amount to be supplied to the farm field by trial delivery of the fertilizer applicator for delivering the fertilizer from the delivery mechanism to the fertilizing hose.SELECTED DRAWING: Figure 5

Description

The present invention relates to a work vehicle.

Conventionally, for example, a work vehicle that performs work while supplying fertilizer to a field at the time of seedling transplantation is known (see, for example, Patent Document 1). In such a work vehicle, the amount of fertilizer delivered from the storage unit can be adjusted.

Japanese Unexamined Patent Publication No. 2014-230519

However, in the work vehicle as described above, the specific gravity of fertilizer is not considered. The specific gravity of fertilizer varies depending on the type and condition at the time of use. Therefore, if fertilizer is supplied without considering the specific gravity, the amount of fertilizer applied to the field may not be the set amount. As a result, for example, an increase in cost due to an increase in the amount of fertilizer applied, or poor growth of crops due to excessive fertilizer or insufficient fertilizer may occur.

The present invention has been made in view of the above, and an object of the present invention is to provide a work vehicle that supplies a set amount of fertilizer to a field.

In order to solve the above-mentioned problems and achieve the object, the work vehicle according to claim 1 is provided with a fertilizer application device for supplying fertilizer to the field and an information processing device capable of setting the fertilizer application amount. In the fertilizer application device, the fertilizer tank, the feeding mechanism for feeding the fertilizer from the fertilizer tank, the fertilizer application hose for feeding the fertilizer from the feeding mechanism, and the fertilizer application hose are removable, and the fertilizer application hose is conveyed. It is equipped with a fertilizer supply unit that drops the fertilizer into the field.
The information processing device inputs the weight of the fertilizer delivered to the fertilizer application hose and fertilizes the fertilizer to be supplied to the field by trial feeding of the fertilizer device, in which the fertilizer is delivered from the delivery mechanism to the fertilizer application hose. It is characterized in that the amount can be input.

The work vehicle according to claim 2 is the work vehicle according to claim 1, wherein the information processing device is based on the input weight of the fertilizer and the amount of fertilizer applied to the input field. It is characterized in that the specific gravity of the fertilizer is calculated.

The work vehicle according to claim 3 is the work vehicle according to claim 1 or 2, wherein the feeding mechanism is rotatably supported.
A fertilizer application amount adjusting unit for adjusting the amount of fertilizer applied from the feeding mechanism with respect to the mileage of the machine is provided, and the rotation speed of the feeding mechanism is adjusted by the fertilizer application amount adjusting unit.

The work vehicle according to claim 4 is the work vehicle according to claim 2 or 3, and when the calculated specific gravity is larger than the standard specific gravity, the rotation speed of the feeding mechanism is made smaller than the predetermined rotation speed. When the calculated specific gravity is smaller than the standard specific gravity, the rotation speed of the feeding mechanism is made larger than the predetermined rotation speed.

The work vehicle according to claim 5 includes a depth sensor for measuring the depth to the water surface or the soil surface and a water temperature sensor for measuring the water temperature in the field in the work vehicle according to claim 3 or 4. The fertilizer application amount adjusting unit is controlled based on the sensor and the water temperature sensor, and the rotation speed of the feeding mechanism is automatically changed.

According to the work vehicle according to claim 1, the weight of the fertilizer delivered to the fertilizer hose and the amount of fertilizer applied to the field are input to the information processing device by the trial feeding of the fertilizer. The specific gravity can be easily calculated. Further, by supplying fertilizer to the field based on the specific gravity, a set amount of fertilizer can be supplied to the field. Therefore, it is possible to suppress an increase in cost due to an increase in the amount of fertilizer applied and poor growth of crops due to excessive fertilizer or insufficient fertilizer.

According to the work vehicle according to claim 2, in addition to the effect of the invention according to claim 1, by supplying fertilizer to the field based on the specific gravity, a set amount of fertilizer is supplied to the field. be able to. Therefore, it is possible to suppress an increase in cost due to an increase in the amount of fertilizer applied and poor growth of crops due to excessive fertilizer or insufficient fertilizer.

According to the work vehicle according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the amount of fertilizer delivered from the feeding mechanism with respect to the mileage of the machine body can be adjusted.

According to the work vehicle according to claim 4, in addition to the effect of the invention according to claim 2 or 3, a set amount of fertilizer can be supplied to the field.

According to the work vehicle according to claim 5, in addition to the effect of the invention according to claim 3 or 4, the state of the field is detected and the rotation speed of the feeding mechanism is automatically changed to change the field. It is possible to supply fertilizer with an appropriate amount of fertilizer, and it is possible to suppress an increase in cost due to an increase in the amount of fertilizer applied and poor growth of crops due to excessive fertilizer or insufficient fertilizer.

FIG. 1 is a side view of the rice transplanter. FIG. 2 is a plan view in which a part of the rice transplanter is omitted. FIG. 3 is a cross-sectional view in the left-right direction on the lower side of the fertilizer tank. FIG. 4 is a perspective view of the joint viewed diagonally from the rear. FIG. 5 is a block diagram centered on a control device included in the rice transplanter. FIG. 6 is a diagram showing a display example in the information processing terminal. FIG. 7 is a diagram showing an example in which the second fertilizer application hose is inserted into the container. FIG. 8 is a flowchart illustrating the feeding amount setting control.

Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments. In addition, the components in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same, that is, those having a so-called equal range. In addition, the components in the following embodiments can be combined as appropriate.

In the following, the front-rear and left-right directions are defined as the front-rear and left-right reference based on the traveling direction of the vehicle body when viewed from the driver's seat 31. FIG. 1 is a side view of the rice transplanter 1, and FIG. 2 is a plan view in which a part of the rice transplanter 1 is omitted. In the rice transplanter 1, the seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via an elevating link mechanism 3. A main body portion of the fertilizer application device 5 is provided on the upper rear side of the traveling vehicle body 2.

The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and a pair of left and right rear wheels 11, which are driving wheels. A mission case 12 is provided at the front portion of the body of the rice transplanter 1, and front wheel final cases 13 are provided on the left and right sides of the mission case 12. The front wheels 10 are attached to a pair of left and right front wheel axles that project outward from the support portion of the front wheels 10 whose steering direction of the front wheel final case 13 can be changed.

The front end of the main frame 15 is fixed to the back surface of the mission case 12. The rear wheel gear case 18 is freely rolled around the rear wheel rolling shaft provided horizontally at the center of the rear end of the main frame 15 as a fulcrum. The rear wheels 11 are attached to the rear wheel axles that project outward from the rear wheel gear case 18.

The engine 20 is mounted on the main frame 15. The rotational power of the engine 20 is transmitted to the mission case 12 via the belt transmission device 21 and the HST 23. The HST23 is a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). The rotational power transmitted to the transmission case 12 is changed by the transmission in the transmission case 12, and then separated into a traveling power and an external extraction power and taken out. Part of the traveling power is transmitted to the front wheel final case 13 to drive the front wheels 10, and the rest is transmitted to the rear wheel gear case 18 to drive the rear wheels 11.

Further, the above-mentioned external extraction power is transmitted to the seedling planting portion 4 by the planting transmission shaft 26 and is transmitted to the fertilizer application device 5 by the fertilizer application transmission mechanism.

The engine 20, which is an internal combustion engine, is housed in the engine cover 30. A driver's seat 31 is arranged above the engine cover 30. A front cover 32 incorporating various operation mechanisms is arranged in front of the driver's seat 31. A pair of spare seedling frames 38 for carrying seedlings for replenishment are arranged on the left and right sides of the front cover 32. A steering wheel 34 for steering the front wheel 10 is arranged on the upper portion of the front cover 32.

Horizontal floor steps 35 are arranged on both the lower left and right sides of the engine cover 30 and the front cover 32. A part of the floor step 35 has a grid pattern, and for example, mud adhering to the shoes of an operator can be dropped onto the field. Auxiliary steps 35a provided lower than the upper surface of the floor step 35 are arranged at both left and right ends of the floor step 35. According to the auxiliary step 35a, it is possible to facilitate the worker getting on and off the rice transplanter 1.

The elevating link mechanism 3 is a parallel link mechanism and has an upper link 40 and a lower link 41. The tip ends of the upper link 40 and the lower link 41 are rotatably supported by the gate-shaped link base frame 42 in the vertical direction in a rear view erected at the rear end of the main frame 15. Further, a vertical link 43 is connected to the rear end side of the upper link 40 and the lower link 41. A connecting shaft 44 that is rotatably supported by the seedling planting portion 4 and extends in the front-rear direction of the traveling vehicle body 2 is connected to the lower end portion of the vertical link 43. The seedling planting portion 4 is provided so as to be rollable around the connecting shaft 44.

A lifting hydraulic cylinder 46 is attached to the main frame 15. The tip of the elevating hydraulic cylinder 46 is connected to the tip of the upper link 40. The upper link 40 rotates in the vertical direction due to the expansion and contraction of the elevating hydraulic cylinder 46, so that the seedling planting portion 4 moves up and down while maintaining a substantially constant posture.

The seedling planting section 4 included in the seedling transplanter 1 according to the present embodiment shows an example of a six-row planting configuration, and includes a seedling placing section 51, a seedling planting device 52, and a line drawing marker 19. .. The seedling placement section 51 places mat seedlings and reciprocates in the left-right direction to supply seedlings one by one to the seedling outlet of each row, and a horizontal row of seedlings is supplied to the seedling outlet. And the seedling feeding belt 51a transfers the seedlings downward.

In the seedling planting device 52, planting rotation shafts are rotatably provided at both ends of the rotary case 16. A seedling planting tool 54 is attached to the planting rotation shaft.

A center float 55 is provided in the center and side floats 56 are provided at both left and right ends in the lower part of the seedling planting portion 4. When the aircraft is advanced with the center float 55 and the side float 56 installed on the mud surface of the field, the center float 55 and the side float 56 slide on the mud surface and level the ground. The seedlings are planted by the seedling planting device 52 in such a leveled field scene. The center float 55 and the side float 56 are rotatably provided, for example, around a support shaft in the left-right direction so as to move up and down in response to the unevenness of the topsoil surface of the field.

Here, the fertilizer application device 5 will be described in detail with reference to FIGS. 1 to 3. FIG. 3 is a cross-sectional view in the left-right direction on the lower side of the fertilizer tank 60. The fertilizer application device 5 includes a fertilizer tank 60, a feeding mechanism 61, a fertilizer application hose 62, a fertilizer supply unit 63, a blower 64, and a chamber 65.

A pair of fertilizer tanks 60 are arranged on the left and right sides of the traveling vehicle body 2 to store fertilizer to be supplied to the field. The fertilizer tank 60 branches into three chambers in the front-rear direction on the lower side. An opening is formed at the bottom of each chamber. The fertilizer tanks 60 are arranged in pairs on the left and right, and the number of openings on the lower side is six. The lower opening is provided according to the number of rows of the rice transplanter 1. Since the seedling transplanter 1 according to the present embodiment has a six-row planting structure, six openings are formed. The fertilizer tank 60 may be divided into three chambers. A feeding mechanism 61 is connected to each opening on the lower side.

The feeding mechanism 61 includes a feeding section 61a for feeding fertilizer to the fertilizer application hose 62, and a bypass section 61b for bypassing the feeding section 61a and discharging fertilizer to the fertilizer applying hose 62. Similar to the opening on the lower side of the fertilizer tank 60, six feeding mechanisms 61 are provided according to the number of rows. Fertilizer flows into the feeding mechanism 61 from the opening on the lower side of the fertilizer tank 60. The first fertilizer application hose 70 is connected to the feeding mechanism 61 under the feeding portion 61a.

The feeding portion 61a has a substantially cylindrical shape, and is rotatably supported by the case 61c of the feeding mechanism 61. The feeding portion 61a is driven by a fertilizer application amount adjusting motor 101 (see FIG. 5) to rotate. A plurality of recesses 61d are formed in the feeding portion 61a along the rotation direction. The recess 61d opens outward in the radial direction of the feeding portion 61a.

The feeding portion 61a causes the fertilizer to flow into the recess 61d located on the upper side, and moves the recess 61d containing the fertilizer downward by rotation to drop the fertilizer from the recess 61d. In the feeding mechanism 61, the first fertilizer application hose 70 is connected to the lower side of the feeding portion 61a, and the fertilizer that has fallen from the recess 61d flows into the first fertilizer application hose 70. As the feeding portion 61a rotates in this way, the fertilizer in the fertilizer tank 60 is fed to the first fertilizer application hose 70. The feeding portion 61a can adjust the feeding amount of fertilizer (hereinafter, referred to as the feeding amount) with respect to the mileage of the seedling transplanter 1 by adjusting the rotation speed by the fertilizer application amount adjusting motor 101.

The bypass portion 61b is formed on the outer side of the feeding portion 61a so as to bypass the feeding portion 61a so that fertilizer can be discharged. The bypass portion 61b connects the fertilizer tank 60 and the fertilizer application hose 62 via the discharge boots 67. An on-off valve 66 is provided in the opening on the upper side of the bypass portion 61b.

The on-off valve 66 is, for example, a rotary valve operated by a lever. The on-off valve 66 may be a sliding type. The on-off valve 66 opens and closes the bypass portion 61b to switch the inflow state of fertilizer into the bypass portion 61b. When the on-off valve 66 is opened, fertilizer flows into the bypass portion 61b. On the other hand, when the on-off valve 66 is closed, fertilizer does not flow into the bypass portion 61b.

The fertilizer application hose 62 includes a first fertilizer application hose 70, a joint 71, and a second fertilizer application hose 72. Six fertilizer hoses 62 are provided according to the number of rows.

The first fertilizer application hose 70 is provided below each feeding portion 61a, and is connected to the feeding mechanism 61 by a connecting portion 70a. The first fertilizer application hose 70 is extended in the left-right direction. The inner end of the first fertilizer application hose 70 is connected to the first blower pipe 65a of the chamber 65 or the third blower pipe 65c of the chamber 65. The outer end of the first fertilizer hose 70 is connected to the first branch 71a of the joint 71. Fertilizer is delivered from the feeding mechanism 61 to the first fertilizer application hose 70 by the feeding portion 61a.

As shown in FIG. 4, the joint 71 is a three-pronged joint composed of a first branch portion 71a, a second branch portion 71b, and a third branch portion 71c. FIG. 4 is a perspective view of the joint 71 as viewed diagonally from the rear. The first fertilizer application hose 70 is connected to the first branch portion 71a. The discharge boot 67 is connected to the second branch portion 71b. A second fertilizer application hose 72 is connected to the third branch portion 71c.

The second fertilizer application hose 72 is a flexible hose. One end of the second fertilizer hose 72 is connected to the joint 71, and the other end is connected to the fertilizer supply 63 via the connecting 73. The second fertilizer application hose 72 is detachably connected to the fertilizer supply unit 63 via the connecting portion 73. The connecting portion 73 is provided at a position where the operator can easily perform the attachment / detachment operation from the left-right direction of the traveling vehicle body 2.

The blower 64 is provided in front of the fertilizer tank 60 arranged on the left side of the traveling vehicle body 2. The blower 64 is driven by the blower motor 102, sucks air, and blows the sucked air into the chamber 65.

The chamber 65 is connected to the first blower pipe 65a extending rearward from the blower 64 and the first blower pipe 65a, and is connected to the second blower pipe 65b and the second blower pipe 65b extending in the left-right direction. A third blower pipe 65c extending forward is provided.

Each first fertilizer application hose 70 provided on the left side of the traveling vehicle body 2 is connected to the first blower pipe 65a. Each first fertilizer application hose 70 provided on the right side of the traveling vehicle body 2 is connected to the third blower pipe 65c. The chamber 65 causes the air blown by the blower 64 to flow into each first fertilizer application hose 70.

The fertilizer supply unit 63 extends from the connecting unit 73 to the front of the center float 55 or the side float 56. Six fertilizer supply units 63 are provided according to the number of rows. The fertilizer supply unit 63 drops the fertilizer conveyed via the fertilizer application hose 62 into the field.

Here, the case where the fertilizer supply unit 63 and the like are provided according to the number of rows has been described as an example, but the present invention is not limited to this. For example, one fertilizer supply unit 63 or the like may be provided for two articles. In this case, for example, the fertilizer supply unit 63 is provided so as to supply fertilizer near the middle between the two adjacent rows.

Next, the control system of the rice transplanter 1 will be described. FIG. 5 is a block diagram centered on the control device 150 of the rice transplanter 1. The seedling transplanter 1 according to the present embodiment can control each part by electronic control, and the seedling transplanter 1 includes a control device 150 for controlling each part. The control device 150 includes a controller 150a provided on the traveling vehicle body 2 and a detachable information processing terminal 150b.

The controller 150a and the information processing terminal 150b are provided with a processing unit having a CPU (Central Processing Unit) and the like, a storage unit such as a ROM (Read Only Memory) and a RAM (Random Access Memory), and an input / output unit. They are connected to each other and can pass signals to each other. A computer program or the like that controls the rice transplanter 1 is stored in the storage unit. The controller 150a and the information processing terminal 150b exert their respective functions by reading a computer program or the like stored in the storage unit.

For example, the controller 150a performs an automatic elevating process for elevating and lowering the seedling planting portion 4 and the like based on the information acquired by the depth sensor 111 and the rotation sensor 170.

For example, the controller 150a controls the rotation speed of the throttle motor 100 and the feeding portion 61a that increase or decrease the rotation speed of the engine 20 by operating a throttle (not shown) for adjusting the intake amount of the engine 20 as actuators. The fertilizer application amount adjusting motor 101 for adjusting the amount of fertilizer applied to the field, the blower motor 102 for driving the blower 64, the rotation motor 103 for rotating the depth sensor 111, and the hydraulic control valve 104 for controlling the expansion and contraction operation of the elevating hydraulic cylinder 46 Etc. are connected.

Further, as sensors, a fertilizer concentration sensor 110, a depth sensor 111, a water temperature sensor 112, an inclination sensor 113, a weight sensor 114, and the like are connected to the controller 150a.

The fertilizer concentration sensor 110 is provided on each of the left and right front wheels 10 and detects the fertilizer concentration between the left and right front wheels 10. For example, the fertilizer concentration sensor 110 is composed of an annular electrode plate, and is arranged inside or outside the body of the front wheel 10 and near the outer peripheral edge portion close to soil or water.

A plurality of depth sensors 111 are attached to the traveling vehicle body 2 so as to be rotatable via a mounting shaft or the like. For example, the depth sensor 111 measures the depth to the water surface or the soil surface by reflecting ultrasonic waves or laser light.

The water temperature sensor 112 is attached to an electrode plate constituting the fertilizer concentration sensor 110 and detects the water temperature.

The fertilizer concentration sensor 110, the depth sensor 111, and the water temperature sensor 112 are sensors that detect the state of the field, that is, the soil fertility.

The inclination sensor 113 detects the pitching of the traveling vehicle body 2, that is, the inclination in the vertical direction. The controller 150a drives the rotation motor 103 to rotate the depth sensor 111 around the mounting axis so that the depth sensor 111 always faces the vertical direction according to the inclination angle of the traveling vehicle body 2 detected by the inclination sensor 113. ..

The weight sensor 114 is provided in the feeding mechanism 61 and detects the weight of fertilizer in the fertilizer tank 60. The weight sensor 114 is arranged, for example, in the vicinity of the feeding portion 61a of each feeding mechanism 61.

The information processing terminal 150b is a tablet terminal configured by a touch panel type display. The information processing terminal 150b has a scanner function capable of reading information such as characters, numbers, and symbols. The information processing terminal 150b can read, for example, a barcode printed on a fertilizer bag or the like to read the type of fertilizer or the like.

In addition, the information processing terminal 150b can control the operation of the seedling planting unit 4, the fertilizer application device 5, and the like in cooperation with the controller 150a. The information processing terminal 150b can control the operation of the seedling planting unit 4, the fertilizer application device 5, etc. based on the information stored in the state of being connected to another work vehicle.

On the operation screen of the information processing terminal 150b, for example, an operation button as shown in FIG. 6 is displayed, and the operation of the fertilizer application device 5 or the like can be controlled by touching the operation button. FIG. 6 is a diagram showing a display example on the information processing terminal 150b.

The information processing terminal 150b has, as operation buttons, a button 200 for inputting the amount of fertilizer applied (total weight of fertilizer supplied to the field), a button 201 for inputting the trial feeding amount, and a button for selecting the fertilizer reduction rate. 202, button 203 for starting rice planting, specific gravity, etc. are displayed. For example, when the button 200 for inputting the fertilizer application amount is touched, a screen for inputting the fertilizer application amount is displayed, and the fertilizer application amount can be input. When the button 203 for starting rice planting is touched, rice planting is started.

In addition to the buttons 200 to 203 described above, the information processing terminal 150b displays an operation button for controlling the operation of the seedling planting unit 4, the fertilizer application device 5, and the like.

With the above configuration, the seedling transplanter 1 can plant seedlings in the field while supplying fertilizer to the field. Here, the operation of supplying fertilizer by the fertilizer application device 5 will be described in detail.

When supplying fertilizer to the field, first, the amount of fertilizer applied to the field is input to the information processing terminal 150b. The amount of fertilizer applied is entered according to the size of the field and the type of fertilizer used.

Then, the second fertilizer application hose 72 is removed from the fertilizer supply unit 63, and the end of the removed second fertilizer application hose 72 is inserted into the container 80, for example, as shown in FIG. FIG. 7 is a diagram showing an example in which the second fertilizer application hose 72 is inserted into the container 80.

Then, the feeding unit 61a is rotated a predetermined number of times (for example, 30 times), a trial feeding is performed, and the weight of the fertilizer delivered into the container 80 is measured. The trial feeding amount (weight of fertilizer) delivered by the trial feeding is input to the information processing terminal 150b.

When the trial feeding amount is input, the information processing terminal 150b calculates the specific gravity based on the following formula.

Specific gravity = (trial feeding amount / number of rows) × correction coefficient The correction coefficient is a value set according to the resistance of the first fertilizer application hose 70, the joint 71, the second fertilizer application hose 72, etc., and is the value of the seedling transplanter 1. It is a value set in advance by an experiment or the like according to the type. For example, the correction coefficient is 1.42121 or the like.

The information processing terminal 150b sets the rotation speed of the feeding unit 61a based on the calculated specific gravity and the amount of fertilizer applied.

The information processing terminal 150b compares the calculated specific gravity with the standard specific gravity, and calculates the deviation of the specific gravity with respect to the standard specific gravity. The standard specific gravity is a value set according to the type of fertilizer used and the type of rice transplanter 1. The type of fertilizer to be used can be obtained, for example, by reading the barcode printed on the case of the fertilizer to be used with the information processing terminal 150b.

The amount of fertilizer supplied to the field may vary depending on the weather (temperature and humidity) at the time of use, in the amount of fertilizer entering the recess 61d of the feeding portion 61a. Therefore, the amount of fertilizer delivered from the feeding portion 61a changes according to the weather when the fertilizer is supplied to the field.

For example, when the specific gravity is large, a large amount of fertilizer enters the recess 61d of the feeding portion 61a, the feeding amount by the feeding portion 61a is large, and the fertilizer application amount supplied to the field is large. On the other hand, when the specific gravity is small, less fertilizer enters the recess 61d of the feeding portion 61a, the feeding amount by the feeding portion 61a is small, and the fertilizer application amount supplied to the field is reduced.

In this way, by changing the specific gravity, there is a possibility that more fertilizer than the set fertilizer application amount is supplied to the field, or less fertilizer than the set fertilizer application amount is supplied to the field.

Therefore, the information processing terminal 150b calculates the deviation between the calculated specific gravity and the standard specific gravity, and sets the rotation speed of the feeding unit 61a based on the calculated deviation.

When the calculated specific gravity is larger than the standard specific gravity, the rotation speed of the feeding portion 61a is made smaller than the predetermined rotation speed so that the amount of fertilizer applied to the field becomes the set amount of fertilizer. When the calculated specific gravity is smaller than the standard specific gravity, the rotation speed of the feeding portion 61a is made larger than the predetermined rotation speed so that the amount of fertilizer applied to the field becomes the set amount of fertilizer. The predetermined rotation speed is a preset rotation speed, and is set according to the amount of fertilizer applied.

The information processing terminal 150b adjusts the feeding amount of the feeding section 61a by setting the rotation speed of the feeding section 61a based on the specific gravity and the fertilizer application amount. As a result, the set amount of fertilizer is supplied to the field.

After the trial feeding, the second fertilizer application hose 72 is attached to the fertilizer supply unit 63. As a result, a fertilizer supply path for transporting fertilizer from the fertilizer tank 60 to the field is formed.

After that, when the button 203 for starting rice planting displayed on the information processing terminal 150b is touched, the fertilizer application amount adjusting motor 101 is controlled so that the rotation speed of the feeding portion 61a becomes the set rotation speed. Fertilizer is delivered from the feeding section 61a, and the fertilizer is supplied to the field via the fertilizer supply path.

When variable fertilizer application is performed to adjust the amount of fertilizer supplied to the field according to the soil fertility of the field, it is based on the signals from the fertilizer concentration sensor 110, the depth sensor 111, and the water temperature sensor 112. The fertilizer application amount adjusting motor 101 is controlled, and the rotation speed of the feeding portion 61a is automatically changed.

When the button 202 for selecting the fertilizer reduction rate of the information processing terminal 150b is touched, the fertilizer application amount adjusting motor 101 is controlled according to the fertilizer reduction rate, and the rotation speed of the feeding unit 61a is automatically changed. ..

Next, the payout amount setting control will be described with reference to the flowchart of FIG. FIG. 8 is a flowchart illustrating the feeding amount setting control.

When the amount of fertilizer applied is input to the information processing terminal 150b (step S10) and the trial feeding amount is input (step S11), the information processing terminal 150b calculates the specific gravity (step S12).

Then, the information processing terminal 150b sets the rotation speed of the feeding unit 61a based on the calculated specific gravity and the fertilizer application amount (step S13).

Such setting of the feeding amount is performed at the start of work, for example, when the date and time of planting is changed or the fertilizer to be used is changed.

Next, the effect of this embodiment will be described.

The information processing terminal 150b calculates the specific gravity of the fertilizer based on the trial feeding amount, and sets the rotation speed of the feeding unit 61a. The seedling transplanter 1 can supply a set amount of fertilizer to the field by supplying the fertilizer to the field based on the specific gravity of the fertilizer. Therefore, it is possible to suppress an increase in cost due to an increase in the amount of fertilizer applied and poor growth of crops due to excessive fertilizer or insufficient fertilizer.

Further, the information processing terminal 150b sets the rotation speed of the feeding unit 61a based on the specific gravity and the amount of fertilizer applied. As a result, it is possible to reduce the error in the amount of fertilizer applied to the field, increase the cost due to the increase in the amount of fertilizer applied, and suppress the poor growth of crops due to excessive fertilizer or insufficient fertilizer.

Further, the information processing terminal 150b can suppress poor growth of crops due to excessive fertilizer or insufficient fertilizer by adjusting the rotation speed of the feeding portion 61a based on the soil fertility.

In addition, since the amount of fertilizer applied is set according to the size of the field and the type of fertilizer, it is possible to supply fertilizer to the field with an appropriate amount of fertilizer. It is possible to suppress poor growth of crops due to excessive or insufficient fertilizer.

Next, a modified example of the above embodiment will be described.

In the above embodiment, a pair of fertilizer tanks 60 are arranged on the left and right sides of the traveling vehicle body 2, but the present invention is not limited to this. The fertilizer tank may be one tank extending in the left-right direction.

Further, the information processing terminal 150b has been described by taking a tablet terminal as an example, but the present invention is not limited to this. The information processing terminal 150b may be set on the traveling panel.

Further, the trial feeding amount was measured by the operator. For example, the information processing terminal 150b uses the weight sensor 114 to calculate the weight before and after the trial feeding, and the specific gravity is calculated based on the calculated value. Then, the rotation speed of the feeding portion 61a may be set. Thereby, for example, the operator can set the rotation speed of the feeding portion 61a without attaching / detaching the second fertilizer application hose 72 or measuring the trial feeding amount, and the working efficiency can be improved. ..

Further, when the button 203 for starting rice planting is touched, the information processing terminal 150b may store the calculated specific gravity. Then, when the button 203 for moving the field and starting the rice planting is touched again, the rotation speed of the feeding portion 61a may be set based on the stored specific gravity. As a result, when the field is moved and the same fertilizer is supplied to the field, the set amount of fertilizer can be supplied to the field without performing trial feeding again, and the work efficiency can be improved. it can.

Further, the specific gravity may be directly input to the information processing terminal 150b. For example, when the worker knows the specific gravity from the work contents of the previous year, the rotation speed of the feeding unit 61a is set by directly inputting the specific gravity without performing the trial feeding. Thereby, work efficiency can be improved. When the specific gravity is directly input to the information processing terminal 150b, the item for inputting the trial delivery amount may be left blank. As a result, the current work status can be easily confirmed by looking at the information processing terminal 150b.

Further, the trial feeding amount may be calculated based on the amount obtained from one second fertilizer application hose 72.

The controller 150a may be composed of a plurality of controllers.

Further effects and variations can be easily derived by those skilled in the art. For this reason, the broader aspects of the invention are not limited to the particular details expressed and described as described above, and the representative embodiments. Thus, various modifications can be made without departing from the spirit or scope of the general concept of the invention as defined by the appended claims and their equivalents.

1 Rice transplanter 4 Seedling planting part 5 Fertilizer application device 60 Fertilizer tank (storage part)
61 Feeding mechanism 61a Feeding part 101 Fertilizer application amount adjustment motor 110 Fertilizer concentration sensor (sensor)
111 Depth sensor (sensor)
112 Water temperature sensor (sensor)
114 Weight sensor 150 Control device 150a Controller 150b Information processing terminal (information processing device)

Claims (5)

A fertilizer application device for supplying fertilizer to a field and an information processing device capable of setting the amount of fertilizer applied are provided, and the fertilizer application device includes a fertilizer tank, a delivery mechanism for delivering the fertilizer from the fertilizer tank, and the delivery mechanism. It is provided with a fertilizer application hose from which the fertilizer is delivered from the fertilizer and a fertilizer supply unit to which the fertilizer application hose is detachable and the fertilizer to which the fertilizer application hose is conveyed is dropped into a field.
The information processing device inputs the weight of the fertilizer delivered to the fertilizer application hose and fertilizes the fertilizer to be supplied to the field by trial feeding of the fertilizer device, in which the fertilizer is delivered from the delivery mechanism to the fertilizer application hose. A work vehicle characterized in that the amount can be entered. The work according to claim 1, wherein the information processing apparatus calculates the specific gravity of the fertilizer based on the input weight of the fertilizer and the amount of fertilizer applied to the input field. vehicle. The feeding mechanism is rotatably supported and supported.
Claim 1 or 2 is characterized in that a fertilizer application amount adjusting unit for adjusting the amount of fertilizer applied to be delivered from the feeding mechanism is provided with respect to the mileage of the machine, and the rotation speed of the feeding mechanism is adjusted by the fertilizer application amount adjusting unit. Work vehicle described in. When the calculated specific gravity is larger than the standard specific gravity, the rotation speed of the feeding mechanism is made smaller than the predetermined rotation speed, and when the calculated specific gravity is smaller than the standard specific gravity, the rotation of the feeding mechanism is rotated. The work vehicle according to claim 2 or 3, wherein the speed is made higher than a predetermined rotation speed. It is equipped with a depth sensor that measures the depth to the water surface or soil surface, and a water temperature sensor that measures the water temperature in the field. The work vehicle according to claim 3 or 4, wherein the work vehicle is changed to.