JP5776026B2 - Seedling transplanter - Google Patents

Description

The present invention relates to the field of a seedling transplanter that travels in a field and plants seedlings while fertilizing soil.

Such a seedling transplanter is disclosed in, for example, Patent Document 1, and detects fertilizer concentration in the field, hardness and softness of the mud, and depth with various sensors, and changes the fertilizer application amount based on these detection data.

JP 2010-000019 A

In the conventional fertilization method, even if uniform fertilization is performed with fertilization control according to the residual concentration in the field, the yield decreases due to partial growth shortage, and the harvesting efficiency decreases due to overexploitation. Various fertilization controls have been tried to realize such optimal growth.

An object of the present invention is to realize uniform fertilization with high accuracy by a simple measuring method.

A seedling transplanting machine according to the invention of claim 1,
From the traveling vehicle body (2) that travels in the field, the seedling planting part (4) that is provided on the traveling vehicle body (2) so as to be movable up and down, and for planting seedlings in the soil, and the planting position of the seedling planting part (4) Also the above vehicle body (2)
Fertilizer (5) for discharging fertilizer to the soil from a fertilizer guide (63) provided at the front of the vehicle, and left and right traveling wheels disposed at the front of the traveling vehicle body (2) rather than the fertilizer guide (63) (10
) And a pair of left and right detectors (71a) that enter the soil, and these detectors (7
1a) A fertilizer concentration sensor (71) for detecting the energization resistance or electric conductivity between the fertilizers to detect the fertilizer concentration in the soil, and the fertilizer application device (5) based on the detected value of the fertilizer concentration sensor (71).
In a seedling transplanter equipped with a control device (72) for changing the fertilization amount of
The sensor float (55) provided in the lower part of the seedling planting part (4) is slid on the soil surface and leveled.
At the same time, the temperature sensor (73) provided in the sensor float (55) is positioned in the soil.
Detecting the temperature of the soil, it is to wherein there to correct the detection value of the fertilizer concentration sensor (71) based on the detected value of this.

In addition to the description of claim 1, the seedling transplanter according to the invention of claim 2,
A tiller depth sensor (74) for detecting the tiller depth of the field is provided at the front of the traveling vehicle body (2) rather than the fertilizer guide (63) of the fertilizer application device (5),
The control device (72) is configured to change the fertilizer application amount of the fertilizer applicator (5) based on the detection data of the tiller depth sensor (74) .

In addition to the description of claim 1 or claim 2, the seedling transplanting machine according to the invention of claim 3,
The traveling vehicle body (2) receives a GPS signal to acquire its own position data, and a fertilizer concentration at various locations in the field for each position data acquired by the GPS receiver (75). And a data box (76) for storing fertilizer application data,
The control device (72) controls the traveling vehicle body (2) to travel along a desired traveling route, and changes the fertilizer amount of the fertilizer application device (5) based on the data stored in the data box (76). It is characterized by having the structure which does.

In addition to the description of claim 1 or 2 , the seedling transplanter according to the invention of claim 4
The control device (72) integrates the detection data of the fertilizer concentration sensor (71), the detection data of the temperature sensor (73), and the detection data of the tiller depth sensor (74), and fertilizes the fertilizer application device (5). It is characterized by changing the amount.

In addition to the description of any one of claims 1 to 4 , the seedling transplanter according to the invention described in claim 5,
The temperature sensor (73) is provided near the rotation fulcrum (55p) of the sensor float (55), and the temperature sensor base rear end (73b) of the temperature sensor mounting portion (73a) to which the temperature sensor (73) is attached. Bend downward,
The tillage depth sensor (74) is disposed above the floor step (35) of the traveling vehicle body (2) and at a position outside the machine body from the floor step (35),
A GPS receiver (75) is provided on the operation panel (39) of the traveling vehicle body (2), and the operation lamp (75m) of the GPS receiver (75) is connected to the driver seat (31) of the traveling vehicle body (2). It arrange | positions in the position which can be visually observed.

A seedling transplanter according to the invention of claim 6
From the traveling vehicle body (2) that travels in the field, the seedling planting part (4) that is provided on the traveling vehicle body (2) so as to be movable up and down, and for planting seedlings in the soil, and the planting position of the seedling planting part (4) Also the above vehicle body (2)
Fertilizer (5) for discharging fertilizer to the soil from a fertilizer guide (63) provided at the front of the vehicle, and left and right traveling wheels disposed at the front of the traveling vehicle body (2) rather than the fertilizer guide (63) (10
) And a pair of left and right detectors (71a) that enter the soil, and these detectors (7
1a) a fertilizer concentration sensor (71) for detecting the energization resistance or electrical conductivity between the soils to detect the fertilizer concentration of the soil, and the fertilizer application device (71) based on the detection data of the fertilizer concentration sensor (71).
In a seedling transplanter equipped with a control device (72) for changing the fertilization amount of 5),
The pair of left and right detectors (71a) is configured in a circular shape whose outer periphery is smaller in diameter than the outer shape of the traveling wheel (10), and is disposed within the lateral width of the traveling wheel (10), respectively.
A rotating electrode (81) that rotates integrally with the axle (80) of the traveling wheel (10) and connects to the detector (71a), and a cover (82) that supports the axle (80) of the traveling wheel (10). A fixed-side electrode (83) provided in contact with the rotation-side electrode (81), wherein one of the rotation-side electrode (81) and the fixed-side electrode (83) is configured in a ring shape, and the other As a contact ,
Furthermore, a vertical kingpin shaft (84) that is deviated outward in the left-right direction toward the lower side, and a pair of bevel gears (85) that are transmitted from the kingpin shaft (84) to the axle (80) of the traveling wheel (10), The bevel gear (85) is configured such that the central portion provided with the axle (80) is concave, and the cover (82) is disposed in the concave central portion.
The electric wire (86) that conducts electricity to the fixed electrode (83) is connected to the kingpin shaft (84) in front of the machine body.
In this case, the lower side is arranged so as to be displaced outward in the left-right direction.

Seedling transplantation machine according to the invention of claim 7, wherein, in addition to the description of claim 6, the running wheels (10)
A hole for passing a conductive wire (88) to the rotation side electrode (81) in the axle shaft (80)
(89) or a groove is formed .

In addition to the description of claim 6 or claim 7, the seedling transplanter according to the invention of claim 8,
A fixing device (95) for fixing the detector (71a) to the spoke part (90) of the traveling wheel (10);
The fixture (95) has a sharp cross-sectional shape that protrudes toward the axle (80) of the traveling wheel (10) when the detector (71a) is fixed to the spoke part (90) in front of the body. It is characterized by being formed .

In addition to the description of any one of claims 6 to 8, the seedling transplanter according to the invention of claim 9
A rotation side electrode (81) is provided in a space portion between the inner front axle cover (82i) and the outer front axle cover (82o) constituting the cover (82),
The inner front axle cover (82i) is arranged at the concave center portion of the bevel gear (85).

According to the first aspect of the present invention, the traveling vehicle body (2) traveling in the field, the seedling planting part (4) provided on the traveling vehicle body (2) so as to be movable up and down, and planting seedlings in the soil, and the seedling A fertilizer (5) for discharging fertilizer to the soil from a fertilizer guide (63) provided in front of the traveling vehicle body (2) from the planting position of the planting part (4), and a traveling vehicle body than the fertilizer guide (63) (2) A pair of left and right detectors (71a) that are provided on the left and right traveling wheels (10) arranged in the front part and enter the soil, and the conduction resistance or electrical conductivity between these detectors (71a). A fertilizer concentration sensor (71) that detects and detects the fertilizer concentration in the soil, and a fertilizer application device (5) based on detection data of the fertilizer concentration sensor (71)
In a seedling transplanter provided with a control device (72) for changing the fertilizer application amount, a temperature sensor (73) for detecting the temperature of the soil is provided, and a fertilizer concentration sensor (based on the detected value of the temperature sensor (73)) 71) Since the detection value was corrected, it became possible to change the amount of fertilization to an appropriate amount according to the change in energization resistance or electrical conductivity due to differences in soil temperature, and improved fertilization accuracy with a simple measurement method The effect of doing is obtained.
Moreover, according to invention of Claim 1, the traveling vehicle body (2) is equipped with the sensor float (55) which carries out raising / lowering control of the seedling planting part (4) to desired ground height, and slides the soil surface and levels the ground. The temperature sensor (73) is provided in the sensor float (55), so that the temperature sensor (73) remains in the soil even if the seedling planting part (4) moves up and down following the unevenness of the field. Since it continues to be located, the detection of the temperature sensor (73) can be prevented from being interrupted, and the effect of further improving the fertilization accuracy can be obtained.

(Delete)

According to invention of Claim 2 , in addition to the effect of Claim 1, in the front part of a traveling vehicle body (2) rather than the fertilization guide (63) of a fertilizer applicator (5), the cultivation pad depth of a farm field The cultivator depth sensor (74) is detected, and the control device (72) performs control to change the fertilizer amount of the fertilizer application (5) based on the detection data of the cultivator depth sensor (74). As a result, the amount of fertilization can be changed to an appropriate amount in accordance with the change in the depth of the cultivation pad, and the effect of further improving the fertilization accuracy can be obtained.

According to the invention described in claim 3 , in addition to the effect described in claim 1 or 2 , the traveling vehicle body (2) receives the GPS signal and acquires its position data. And a data box (76) for storing fertilizer concentration and fertilizer application data at various locations in the field for each position data acquired by the GPS receiver (75).
2) Since the vehicle body (2) is controlled to travel along a desired travel route, and the fertilizer application amount of the fertilizer application (5) is changed based on the data stored in the data box (76). In addition, it becomes possible to acquire data serving as a reference when performing fertilization work in the same field or similar fields, and the effect of improving the accuracy of fertilization after the next time is obtained.
Further, optimum fertilization work can be performed based on the data in the acquired data box (76), and the control device (72) controls the traveling vehicle body (2) to travel along a desired traveling route. As a result, it is possible to achieve an unmanned operation.

According to invention of Claim 4 , in addition to the effect of any one of Claim 1 or 2 , a control apparatus (72) is the detection data of a fertilizer density | concentration sensor (71), and a temperature sensor (73). Since the fertilizer application (5) is changed by integrating the detection data of the soil and the detection data of the tiller depth sensor (74), the fertilizer application amount is changed to an appropriate amount following the change of the working conditions. As a result, the accuracy of fertilization can be further improved and the effect of adapting to various working conditions can be obtained.

According to the invention described in claim 5 , in addition to the effect of the invention described in any one of claims 1 to 4, by providing the temperature sensor (73) in the vicinity of the rotation fulcrum (55p), Since the variation in the depth of the temperature sensor (73) when the sensor float (55) rotates is reduced, the detection accuracy of the temperature sensor (73) is prevented from being lowered.
Moreover, the groove | channel of the soil which the temperature sensor (73) formed can be plugged up with the bending part of the temperature sensor base rear end (73b).
And, by placing the tiller depth sensor (74) at a position greatly spaced upward from the farm scene, mud can be prevented from adhering to the sensing part of the tiller depth sensor (74). The depth of tilling is always properly sensed and the fertilization amount is corrected to an appropriate value, improving the fertilization accuracy.
Further, since the GPS receiver (75) is provided on the operation panel (39), the GPS receiver (75) is hardly affected by the peripheral members, so that the GPS receiver (75) is highly sensitive. .
The operation of the GPS receiver (75) is confirmed while sitting on the driver seat (31) by arranging the operation lamp (75m) of the GPS receiver (75) at a position where it can be seen from the driver seat (31). As a result, work efficiency is improved.

According to invention of Claim 6 , it transmits to the axle shaft (80) of a driving | running | working wheel (10) from the up-down direction kingpin axis | shaft (84) which deviates to the left-right direction outer side, and this kingpin axis | shaft (84). A pair of bevel gears (85), the bevel gear (85) is configured to have a concave central portion provided with the axle (80), and the cover (82) is disposed in the concave central portion;
The electric wire (86) that conducts electricity to the fixed side electrode (83) is arranged so as to be displaced outward in the left-right direction toward the lower side along the kingpin axis (84) when viewed from the front of the machine body. While being able to make it the structure which does not contact a driving | running | working wheel (10), it becomes possible to make small the distance which an electric wire (86) moves at the time of turning, and an electric wire (86) cuts and a fertilizer concentration sensor (71) becomes. An effect of preventing the function from being stopped is obtained.

According to the seventh aspect of the invention, in addition to the effect of the sixth aspect, the axle (80) of the traveling wheel (10) allows the electric wire (88) to pass through to the rotating side electrode (81). Since the hole (89) or the groove is formed, the electric wire (88) can be disposed around the axle (80), and the effect that the cover (82) can be configured in a compact manner is obtained.

According to the invention described in claim 8 , in addition to the effect described in any one of claims 6 or 7 , the fixture for fixing the detector (71a) to the spoke part (90) of the traveling wheel (10). (95), and this fixture (95) has a cross-sectional shape that is pointed toward the axle (80) of the traveling wheel (10) when the detector (71a) is fixed to the spoke part (90) in a front view of the body. Therefore, even if mud splashes during running, the mud will be guided to fall down along the inclined surface 95s of the fixture (95), causing mud clogging. It is difficult to obtain an effect of facilitating the work of removing mud after the work is completed.
Moreover, since it becomes difficult to remove mud on the road around the field, the work of removing this mud from the road can be performed easily and in a short time, and the effect of reducing the labor of the operator can be obtained.
According to the invention of claim 9, in addition to the effect of the invention of any one of claims 6 to 8, a space portion between the inner front axle cover (82i) and the outer front axle cover (82o). The rotation side electrode (81) is provided on the inner side and the inner front axle cover (82i) is disposed in the concave center portion of the bevel gear (85), thereby ensuring a large space for the rotation side electrode (81). can do.

It is a side view which shows the structure of the seedling transplanter of this invention. It is a top view which shows the structure of the seedling transplanter of this invention. It is a principal part top view which shows the relationship between a temperature sensor, a side frame, and a float adjustment arm. It is a principal part side view which shows the structure of the temperature sensor provided in the rotation fulcrum vicinity of a sensor float. It is a perspective view which shows the structure of the temperature sensor attaching part for attaching a temperature sensor. It is a principal part side view which shows the structure of the seedling transplanting machine which provided the cultivation board depth sensor in the center mascot. It is a principal part front view which shows the structure of the seedling transplanting machine which provided the data box in the uppermost stage of the preliminary seedling mounting stand. It is a side view which shows the structure of one traveling wheel periphery. It is sectional drawing which shows the structure of one traveling wheel periphery. It is a principal part side view which shows the structure in a front axle cover. It is sectional drawing which shows the structure of the fixing tool for fixing a detector to a spoke part. It is principal part sectional drawing which shows the structure of the mudguard wall formed in the detector. It is the side view and sectional drawing which show the structure of one driving | running | working wheel periphery provided with the fixing tool which has V-shaped cross-sectional shape by the body front view. It is sectional drawing which shows the structure of the driving wheel periphery provided with the front axle cover of the insulator. It is a side view which shows the structure of the driving wheel periphery provided with the front axle cover of the insulator.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each drawing,
The same code | symbol is attached | subjected about the same structure or an equivalent structure.
In FIGS. 1 and 2, which are side and top views showing the configuration of a seedling transplanting machine of the present invention, 1 is a seedling transplanting machine of the present invention, 2 is a traveling vehicle body that travels in a field, and 3 is a lifting link having a parallel link configuration. Apparatus 4 is a seedling planting part for planting seedlings in the soil, and 5 is a fertilizer application apparatus for applying fertilizer to the field. Driving body 2
At the rear part, a seedling planting part 4 of a plurality of strips is mounted so as to be able to be lifted up and down via a lifting link device 3, and a fertilizer 5 is provided on the rear upper side of the traveling vehicle body 2.

1 and 2, 10 and 11 are a pair of left and right traveling wheels provided at the front and rear of the traveling vehicle body 2, 12 is a transmission case disposed at the front of the traveling vehicle body 2, and 31 is a traveling vehicle body. 2 is a driver's seat, 32 is a front cover incorporating various operation mechanisms, 33 is a center mascot serving as an indicator of straight running, and 34 is provided above the front cover 32 to provide a traveling wheel 1.
Steering handle that steers 0, 35 is a floor step of the traveling vehicle body 2, and 38 is a traveling vehicle body 2.
Reference numeral 39 denotes an operation panel for operating the seedling transplanting machine 1, which is provided on both the left and right sides of the front part of the machine and on which a seedling for replenishment is provided.

Further, in FIGS. 1 and 2, reference numeral 51 denotes a seedling mount on which seedlings are placed, 52 denotes a seedling planting device for planting seedlings supplied from the seedling mounting platform 51, and 55 and 56 denote lower parts of the seedling planting unit 4. A sensor float and a side float that are provided at the center and on both the left and right sides and control the raising and lowering of the seedling planting part 4 to a desired ground height by means of a damper function, and by sliding on the soil surface by running of the body, 60
Is a fertilizer hopper for storing fertilizer, 61 is a feed amount changing means for changing the fertilizer feed amount of the fertilizer hopper 60, 62 is a fertilizer hose for guiding the fertilizer fed by the feed amount changing means 61, and 63 is a seedling planting device 52 It is a fertilizer application guide that discharges the fertilizer guided from the fertilizer hose 62 to the soil while digging a groove in the soil surface that is provided at the front portion of the traveling vehicle body 2 from the planting position and into which the fertilizer enters.

1 and 2, 71 is a fertilizer concentration sensor that detects the fertilizer concentration of the soil, 71 a is a pair of left and right that is provided in the left and right traveling wheels 10 and enters the soil to detect its energization resistance or electrical conductivity. A detector 72 is incorporated in the front cover 32 and is a control device 7 for controlling the feed amount changing means 61 based on the detection data of the fertilizer concentration sensor 71 to change the fertilizer amount of the fertilizer 5.
3 is a temperature sensor that detects the temperature of the soil, 74 is a plow depth sensor that detects the depth of the plow in the field, and 75 is a position that receives GPS (* 1) signals from a plurality of satellites in the sky. A GPS receiver that acquires data, 75m is an operation lamp of the GPS receiver 75, and 76 is a data box that stores fertilizer concentration and fertilizer application data at various locations in the field for each position data acquired by the GPS receiver 75.

(* 1) GPS: Abbreviation for Global Positioning System.
Global positioning system.

Next, the operation will be described.
When the traveling vehicle body 2 travels in the field, the fertilizer in the fertilizer hopper 60 is discharged from the fertilizer guide 63 to the soil on the front side of the sensor float 55 and the side float 56 via the feed amount changing means 61 and the fertilizer hose 62. The seedling planting device 52 plants the seedlings on the seedling mount 51 to the soil that has been slid by the side float 56 and has been leveled. At this time, the fertilizer concentration sensor 71 detects the energization resistance or the electrical conductivity of the soil between the left and right traveling wheels 10 by the pair of detectors 71a to detect the fertilizer concentration of the soil.

Here, in the case of a conventional seedling transplanter, since there is no means for detecting the temperature of the soil, it is not possible to correct the detection data of the fertilizer concentration sensor by the temperature of the soil. Since the change in electrical conductivity is recognized as it is, the fertilization amount may vary depending on the weather conditions when planting work even in the same field, and an appropriate amount of fertilization may not be possible.

On the other hand, the seedling transplanter 1 detects the temperature of the soil by the temperature sensor 73, and the control device 72
The detection data of the fertilizer concentration sensor 71 is corrected based on the detection data of the temperature sensor 73, and the feed amount changing means 61 is controlled based on the detection data after this correction to increase or decrease the fertilizer feed amount, thereby changing the fertilizer application amount of the fertilizer application device 5. I am trying to change it. Thereby, it becomes possible to change the fertilization amount to an appropriate amount in accordance with the change in energization resistance or electrical conductivity due to the difference in soil temperature, and the fertilization accuracy can be improved by a simple measurement method.

Here, the detection data may be corrected by correcting the energization resistance or electrical conductivity, or by correcting the fertilizer concentration obtained from the energization resistance or electrical conductivity.

As shown in FIG. 1 and FIG. 2, the temperature sensor 73 is provided in the sensor float 55, so that the temperature sensor 73 remains in the soil even if the seedling planting part 4 moves up and down following the unevenness of the field. The temperature of a certain topsoil depth can be detected, the detection of the temperature sensor 73 is not interrupted, and the fertilization accuracy is further improved.

Further, as shown in the top view of the main part of FIG. 3, the temperature sensor 73 is provided between the side frame 55f and the float adjusting arm 55a, so that the temperature sensor 73 can be used even if the planting depth is changed. And the space between the float adjusting arms 55a can be passed through, and a compact configuration can be achieved.

Further, as shown in the side view of the main part of FIG. 4, the temperature sensor 73 is provided in the vicinity of the rotation fulcrum 55p of the sensor float 55, that is, the distance L between the temperature sensor 73 and the rotation fulcrum 55p of FIG. Thus, it is possible to suppress the depth variation of the temperature sensor 73 even by the pitching variation of the sensor float 55, and the temperature sensor 73 is less likely to be distorted.

Further, as shown in the perspective view of FIG. 5, the temperature sensor base rear end 73 of the temperature sensor mounting portion 73a.
It is possible to close the soil groove attached by the temperature sensor 73 with the temperature sensor base rear end 73b by bending b to the soil side and providing an L-shaped fold.

Further, as shown in FIG. 1, a cultivator depth sensor 74 for detecting the cultivator depth in the field is provided with a fertilizer application guide 6.
3 is provided at the front portion of the traveling vehicle body 2, and the control device 72 controls the feed amount changing means 61 based on the detection data of the tiller depth sensor 74 to change the fertilization amount of the fertilizer application device 5. Since the amount of fertilization can be changed to an appropriate amount in accordance with the change in the tiller depth, which was impossible with a conventional seedling transplanter, the fertilization accuracy can be further improved. In this embodiment, an ultrasonic sensor is used as the tiller depth sensor 74 so that mud or the like does not affect the measurement even if it adheres to the sensor.

Further, as shown in the side view of the main part of FIG. 6, the tiller depth sensor 74 may be provided on the center mascot 33 so as to be slidable in the vertical direction. With this configuration, the tiller depth sensor 74 can be moved in the vertical direction along the center mascot 33 in accordance with the working conditions such as the depth and soil quality of the field, and the mounting position can be adjusted. The mud is prevented from adhering to the 74 sensing portions, and the depth of tilling is always properly sensed and the amount of fertilization is corrected to an appropriate value, thereby improving the fertilization accuracy.
Furthermore, the operator does not need to remove the mud adhering to the sensing portion of the tiller depth sensor 74, so that the work efficiency is improved and the maintainability is improved.

Furthermore, as shown in the front view of the main part of FIG. 7, the tiller depth sensor 74 may be provided in the traveling vehicle body 2 so as to be positioned above the floor step 35 and outside the floor step 35. . As a result, the tiller depth sensor 74 is arranged at a position that is greatly spaced upward from the field scene without interfering with the rice planting work, and mud is formed in the sensing portion of the tiller depth sensor 74. Adhesion is prevented and the cultivation depth is always properly sensed and the amount of fertilization is corrected to an appropriate value, thus improving the fertilization accuracy.

Further, as shown in FIGS. 1 and 2, a GPS receiver 75 and a data box 76 are connected to the traveling vehicle body 2.
The data box 76 stores the fertilizer concentration and fertilizer application amount data at various locations in the field for each position data acquired by the GPS receiver 75, and the control device 72 is connected to the traveling vehicle body 2.
The data box 7 while controlling the steering wheel 34 and the like so as to travel on the desired travel route.
The feed amount changing means 61 may be controlled based on the data stored in 6 to change the fertilizer amount of the fertilizer application device 5.

This makes it possible to acquire data used as a reference when performing fertilization work in the same field or similar environment, so that the acquired data is stored in the control device 72, and the fertilizer amount of the fertilizer device 5 is based on this data. By automatically changing, fertilization accuracy after the next time is improved.
In addition, the optimum fertilization work can be performed based on the data in the acquired data box 76, and the control device 72 controls the traveling vehicle body 2 to travel along a desired traveling route, thereby reducing the unmanned operation. Can be planned.

Further, as shown in FIGS.
It is good also as a structure which provides. As a result, the ability to replenish seedlings from the cocoon can be improved. In addition, as shown in FIG. 7, the lid portion 76c of the data box 76 can be opened to the outside as shown in FIG. It is possible to easily check and adjust the data box 76 from above.

Further, as shown in FIG. 1, the GPS receiver 75 may be provided at the uppermost fixed portion of the center of the body, for example, at the top of the operation panel 39. As a result, the GPS receiver 75
The high sensitivity of the GPS receiver 75 can be secured without being obstructed by the peripheral members,
In this configuration, as shown in FIG. 1, from the driver's seat 31, the operation lamp 75m of the GPS receiver 75 is operated.
If the configuration is such that the GPS receiver 75 is visible, the operation of the GPS receiver 75 can be confirmed while sitting in the driver's seat 31.

Further, the detection data of the fertilizer concentration sensor 71, the detection data of the temperature sensor 73, and the detection data of the tiller depth sensor 74 are integrated, and the control device 72 controls the feed amount changing means 61 based on the integrated data. Then, the fertilizer application amount of the fertilizer application device 5 may be changed. As a result, the amount of fertilization can be changed to an appropriate amount following the change in the working conditions, and the accuracy of fertilizing can be further improved and can be adapted to various working conditions.

Next, the configuration around the traveling wheel 10 will be described.
8 and 9 are a side view and a cross-sectional view showing the configuration around one traveling wheel, respectively.
0 is a side view of the main part showing the configuration inside the front axle cover. However, in the traveling wheel and the front axle cover part below the auxiliary line H in FIG. 9, the S2-S2 cross-sectional view of FIG. 8 and the S3-S4-S5 cross-sectional view of FIG.

8 to 10, reference numeral 80 denotes an axle of the traveling wheel 10, 81 denotes a rotation side electrode of a slip ring that rotates integrally with the axle 80 and connects to the detector 71a, 82 denotes a front axle cover that supports the axle 80, 82o, 82i. Are an outer front axle cover and an inner front axle cover of the front axle cover 82, respectively, and 83 is a fixed side electrode of a contact provided in the front axle cover 82 and in contact with the rotating side electrode 81. One of the rotation side electrode 81 and the fixed side electrode 83 is configured in a ring shape, and the other is used as a contact.

In FIGS. 8 to 10, 84 is a vertical kingpin shaft that deviates outward in the left-right direction of the traveling vehicle body 2 toward the lower side, 85 is a pair of bevel gears that are transmitted from the kingpin shaft 84 to the axle 80,
Reference numeral 86 denotes an electric wire that conducts electricity to the fixed side electrode 83, 87 denotes a guide pipe that is arranged to be displaced outwardly in the left-right direction of the traveling vehicle body 2 along the kingpin shaft 84 when viewed from the front of the machine body, and 88 denotes a rotation side electrode 81. , 89 is a hole for passing the electric wire 88, 90 is a spoke part of the traveling wheel 10, 91 is a pair of fixtures for fixing the detector 71a to the spoke part 90, 92 is a foil cap of the traveling wheel 10, 92w is a mudguard wall formed on the wheel cap 92, and 93 is a front axle.

The outer periphery of the detector 71a is formed in a circular shape having a smaller diameter than the outer shape of the traveling wheel 10. The circular center of the detector 71a is the axle 80, and the detector 71a is disposed within the lateral width of the traveling wheel 10, that is, on the traveling vehicle body 2 side. Has been. A rotation-side electrode 81 that rotates integrally with the axle 80 and connects to the detector 71a, and a fixed-side electrode 83 that is provided in the front axle cover 82 that supports the axle 80 and contacts the rotation-side electrode 81 are provided. The current-carrying resistance or electrical conductivity detected by 71a is conducted.

As a result, a part of the detector 71a always comes into contact with the soil when traveling in the field, and the fertilizer concentration in the soil can be reliably detected. In addition, in the seedling transplanter of Patent Document 1, there is a problem that a specific configuration for conducting detection data of the detector is not clarified. However, in the seedling transplanter 1 of the present invention, the rotation-side electrode 81 and A slip ring system composed of the fixed-side electrode 83 is connected to the detector 71a, so that detection data of the detector 71a rotating together with the traveling wheel 10 can be reliably conducted.

In addition, a lower kingpin shaft 84 that deviates outward in the left-right direction of the traveling vehicle body 2 and a pair of bevel gears 85 that are transmitted from the kingpin shaft 84 to the axle 80 are provided on the lower side, and are electrically connected to the fixed electrode 83. The traveling body 2 of the electric wire 86 is lowered toward the lower side along the kingpin shaft 84 when viewed from the front of the body.
Since the electric wire 86 can be configured not to contact the traveling wheel 10, the distance traveled by the electric wire 86 during turning can be reduced. It is possible to prevent the wire 86 from being cut and the fertilizer concentration sensor 71 from functioning.

Further, since the hole 89 for passing the conductive wire 88 to the rotation side electrode 81 is formed in the axle 80, the wire 88 can be disposed around the axle 80, and the front axle cover 82 can be configured in a compact manner. . Instead of the hole 89, a groove for passing the conductive wire 88 to the rotation side electrode 81 may be formed in the axle 80.

In addition, when attaching the detector 71a to the traveling wheel 10, the spoke part 90 is utilized and S of FIG.
As shown in FIG. 11 which is a 1-S1 cross-sectional view, the detector 71a is fixed to the spoke part 90 with a pair of fixtures 91 using bolts and nuts 94 or the like, and the traveling wheel 10 is shown in FIGS. A mud wall 92w for preventing mud intrusion covering the entire rim of the traveling wheel 10 is provided inside the wheel cap 92, that is, on the center C side. Thereby, mud clogging to the rim portion of the traveling wheel 10 can be prevented. At the same time, since the detector 71a can be attached by the pair of fixtures 91 using the spoke portion 90, the detector 71a can be easily attached to a standard machine.

The following may be used instead of the mudguard wall 92w. That is, the spoke 9 of the traveling wheel 10
The detector 71a is fixed by a pair of fixtures 91 using 0, and the detector 71a is a part of the detector 71a on the center C side of the traveling wheel 10 as shown in the sectional view of the main part of FIG. May be configured as a mudguard wall 71w that covers the rim portion of the traveling wheel 10 over the entire circumference by bending it into an L shape. Accordingly, the detector 71a can be easily attached to the standard machine, and mud clogging on the rim portion of the traveling wheel 10 can be prevented. Further, the inner peripheral surface 71w-i and the outer peripheral surface 71w-o of the mudguard wall 71w are insulated to cover the mud wall 71w in the mud deeper than the mud surface MH.
And the case where the mud wall 71w is present outside the mud above the mud surface ML, so that the electrode area in contact with the mud does not change abruptly, and fluctuations in measured values are suppressed. doing.

In addition, as already shown in FIG. 1, the time lag can be reduced by providing a detector 71 a that detects the energization resistance or electrical conductivity of the soil at the front axle portion in front of the traveling vehicle body 2 rather than the fertilizer application device 5. Can be prevented.

Further, as already shown in FIG. 7, a detector 71 for detecting the energization resistance or electrical conductivity of the soil.
By providing a within the lateral width of the traveling wheel 10, the detection effect of the energization resistance or electrical conductivity is improved by making the detector 71a face each other.

Further, as shown in FIGS. 8 and 9, the depth of the field is obtained by providing a circular detector 71 a for detecting the energization resistance or electrical conductivity of the soil on the entire circumference within the lateral width of the traveling wheel 10. Regardless of whether the current resistance or electrical conductivity can be detected.

Further, as shown in FIG. 9, a circular ring electrode detector 71 a within the lateral width of the traveling wheel 10.
The detector 71a is provided on the inner side of the width W of the traveling wheel 10, that is, on the center C side of the width W in the front view of the body, so that the resistance force during traveling can be reduced.

Further, as shown in FIGS. 8 and 9, a circular ring electrode detector 71 a is provided in the lateral width of the traveling wheel 10, and the detector 71 a is fixed to the spoke portion 90 by an insulator fixture 91. By doing so, the attachment of the detector 71a of the ring electrode is easy and the maintainability can be improved.

Further, as shown in FIG. 9, the rotation-side electrode 81 can be provided in a small space by providing the rotation-side electrode 81 in the space between the inner front axle cover 82i and the outer front axle cover 82o. It becomes possible.

Further, as shown in FIG. 9, the guide pipe 87 that guides the electric wire 86 from the fixed side electrode 83 is guided upward in parallel with the front axle 93, so that the traveling wheel 10 and the guide pipe 8 are arranged.
A space SP can be ensured between 7 and mud clogging can be prevented.

Further, as shown in FIG. 9, the electric wire 88 from the rotation side electrode 81 is connected to the axle 8 through the hole 89 or the groove.
By adopting a configuration in which 0 is obliquely penetrated and guided to the outside, the electric wire 88 can be taken out from the rotation side electrode 81 in a compact manner.

Further, as shown in FIG. 9, the central portion of the bevel gear 85 is formed in a concave shape, and the inner front axle cover 82i is shifted inward, so that a large space can be secured for the rotation-side electrode 81.

Further, as shown in FIG. 13, a pair of fixtures 95 for fixing the detector 71 a to the spoke portion 90.
When the detector 71a is fixed to the spoke part 90, the pair of fixtures 95 is shown in FIG.
As shown in the front view of FIG. 3 (b), the mating portion may be formed in a triangular shape inside, that is, so as to have a V-shaped cross-sectional shape that is pointed toward the axle 80 of the traveling wheel 10 when viewed from the front of the body. .

As a result, even if mud splashes during traveling, the mud is inclined by the inclined surface 9 of the fixture 95.
It is guided to drop downward along 5 s, mud clogging hardly occurs, and the work of removing mud becomes easier after the work is completed. In addition, since it is difficult to remove mud on the road around the field, the work of removing this mud from the road can be performed easily and in a short time, and the labor of the operator is reduced.

Further, as shown in the cross-sectional view of FIG. 14, an insulating front axle cover 97 may be provided on the front axle rotating portion 96 side. As a result, the current from the detector 71a can be prevented from flowing to the front axle, and malfunction can be prevented.

Further, as shown in the side view of FIG. 15, the front axle portion exposed from the lower side of the transmission case 12 may be covered with an insulating front axle cover 98. As a result, the current from the detector 71a can be prevented from flowing to the front axle, and malfunction can be prevented.

1 seedling transplanter, 2 traveling vehicle body, 3 lifting link device, 4 seedling planting part, 5 fertilizer, 10
Traveling wheel, 11 Traveling wheel, 12 Mission case, 31 Driver's seat, 32 Front cover, 33 Center mascot, 34 Steering handle, 35 Floor step, 38
Preliminary seedling stage, 39 operation panel, 51 seedling stage, 52 seedling planting device, 55 sensor float, 55a float adjustment arm, 55f side frame, 55p rotation fulcrum, 56
Side float, 60 Fertilizer hopper, 61 Feed amount changing means, 62 Fertilizer hose, 63
Fertilizer application guide, 71 Fertilizer concentration sensor, 71a detector, 71w Mudguard wall, 71w-i
Inner peripheral surface, 71w-o outer peripheral surface, 72 control device, 73 temperature sensor, 73a temperature sensor mounting portion, 73b temperature sensor base rear end, 74 tillage depth sensor, 75 GPS receiver, 75m operation lamp, 76 data box 76c, lid part, 80 axle, 81
Rotation side electrode, 82 Front axle cover, 82o Outer front axle cover, 8
2i Inner front axle cover, 83 stationary electrode, 84 kingpin shaft, 85 bevel gear, 86 electric wire, 87 guide pipe, 88 electric wire, 89 hole, 90 spoke part,
91 Fixing device, 92 Foil cap, 92w Mudguard wall, 93 Front axle, 9
4 Bolt / Nut, 95 Fixing, 95s Inclined surface, 96 Front axle rotation part,
97,98 Front axle cover.

Claims (9)

From the traveling vehicle body (2) that travels in the field, the seedling planting part (4) that is provided on the traveling vehicle body (2) so as to be movable up and down, and for planting seedlings in the soil, and the planting position of the seedling planting part (4) Also the above vehicle body (2)
Fertilizer (5) for discharging fertilizer to the soil from a fertilizer guide (63) provided at the front of the vehicle, and left and right traveling wheels disposed at the front of the traveling vehicle body (2) rather than the fertilizer guide (63) (10
) And a pair of left and right detectors (71a) that enter the soil, and these detectors (7
1a) A fertilizer concentration sensor (71) for detecting the energization resistance or electric conductivity between the fertilizers to detect the fertilizer concentration in the soil, and the fertilizer application device (5) based on the detected value of the fertilizer concentration sensor (71).
In a seedling transplanter equipped with a control device (72) for changing the fertilization amount of
A sensor float (55) provided under the seedling planting part (4) for sliding on the soil surface and leveling, and a sensor float (55) provided in the soil for detecting the temperature of the soil. A seedling transplanter comprising a temperature sensor (73) for correcting the detected value of the fertilizer concentration sensor (71) based on the detected value of the temperature sensor (73). A tiller depth sensor (74) for detecting the tiller depth of the field is provided at the front of the traveling vehicle body (2) rather than the fertilizer guide (63) of the fertilizer application device (5),
The control device (72), seedlings of claim 1 characterized in that it is configured to change the amount of fertilizer fertilization device (5) on the basis of the detection data of the Koban depth sensor (74) Transplanter. The traveling vehicle body (2) receives a GPS signal to acquire its own position data, and a fertilizer concentration at various locations in the field for each position data acquired by the GPS receiver (75). And a data box (76) for storing fertilizer application data,
The control device (72) controls the traveling vehicle body (2) to travel along a desired traveling route, and changes the fertilizer amount of the fertilizer application device (5) based on the data stored in the data box (76). The seedling transplanter according to claim 1, wherein the seedling transplanter is configured to perform the above-described configuration . The control device (72) integrates the detection data of the fertilizer concentration sensor (71), the detection data of the temperature sensor (73), and the detection data of the tiller depth sensor (74), and fertilizes the fertilizer application device (5). The seedling transplanter according to claim 1 or 2, wherein the amount is changed. The temperature sensor (73) is provided near the rotation fulcrum (55p) of the sensor float (55), and the temperature sensor base rear end (73b) of the temperature sensor mounting portion (73a) to which the temperature sensor (73) is attached. Bend downward,
The tillage depth sensor (74) is disposed above the floor step (35) of the traveling vehicle body (2) and at a position outside the machine body from the floor step (35),
A GPS receiver (75) is provided on the operation panel (39) of the traveling vehicle body (2), and the operation lamp (75m) of the GPS receiver (75) is connected to the driver seat (31) of the traveling vehicle body (2). The seedling transplanting machine according to any one of claims 1 to 4, wherein the seedling transplanting machine is arranged at a position where it can be visually observed. From the traveling vehicle body (2) that travels in the field, the seedling planting part (4) that is provided on the traveling vehicle body (2) so as to be movable up and down, and for planting seedlings in the soil, and the planting position of the seedling planting part (4) Also the above vehicle body (2)
Fertilizer (5) for discharging fertilizer to the soil from a fertilizer guide (63) provided at the front of the vehicle, and left and right traveling wheels disposed at the front of the traveling vehicle body (2) rather than the fertilizer guide (63) (10
) And a pair of left and right detectors (71a) that enter the soil, and these detectors (7
1a) a fertilizer concentration sensor (71) for detecting the energization resistance or electrical conductivity between the soils to detect the fertilizer concentration of the soil, and the fertilizer application device (71) based on the detection data of the fertilizer concentration sensor (71).
In a seedling transplanter equipped with a control device (72) for changing the fertilization amount of 5),
The pair of left and right detectors (71a) is configured in a circular shape whose outer periphery is smaller in diameter than the outer shape of the traveling wheel (10), and is disposed within the lateral width of the traveling wheel (10), respectively.
A rotating electrode (81) that rotates integrally with the axle (80) of the traveling wheel (10) and connects to the detector (71a), and a cover (82) that supports the axle (80) of the traveling wheel (10). A fixed-side electrode (83) provided in contact with the rotation-side electrode (81), wherein one of the rotation-side electrode (81) and the fixed-side electrode (83) is configured in a ring shape, and the other As a contact ,
Furthermore, a vertical kingpin shaft (84) that is deviated outward in the left-right direction toward the lower side, and a pair of bevel gears (85) that are transmitted from the kingpin shaft (84) to the axle (80) of the traveling wheel (10), The bevel gear (85) is configured such that the central portion provided with the axle (80) is concave, and the cover (82) is disposed in the concave central portion.
The electric wire (86) that conducts electricity to the fixed electrode (83) is connected to the kingpin shaft (84) in front of the machine body.
The seedling transplanting machine is characterized in that the lower side along the line is displaced outward in the left-right direction. The axle (80) of the running wheel (10), according to claim 6, wherein holes (89) or to the formation of the grooves for the passage of the wire (88) that conducts to the rotation-side electrode (81) Seedling transplanter. A fixing device (95) for fixing the detector (71a) to the spoke part (90) of the traveling wheel (10);
The fixture (95) has a sharp cross-sectional shape that protrudes toward the axle (80) of the traveling wheel (10) when the detector (71a) is fixed to the spoke part (90) in front of the body. The seedling transplanter according to claim 6 or 7 , wherein the seedling transplanter is formed. A rotation side electrode (81) is provided in a space portion between the inner front axle cover (82i) and the outer front axle cover (82o) constituting the cover (82),
The seedling transplanter according to any one of claims 6 to 8, wherein the inner front axle cover (82i) is disposed in a concave center portion of the bevel gear (85).

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