JP6984382B2 - Seedling transplanter - Google Patents

Description

The present invention relates to a seedling transplanting machine equipped with a fertilizer application device capable of fertilizing while performing seedling transplanting work.

A seedling transplanting machine equipped with a fertilizer application device is designed to improve work efficiency by applying fertilizer at the same time as the seedling transplanting operation. However, the fertilizer application device tends to be clogged with fertilizer. In the technology, a fertilizer hopper is installed at the rear of the passenger body, and the fertilizer discharged from the fertilizer hopper to the fertilizer feeding section is transferred to the fertilizer application guide provided in the planting section through the fertilizer transfer pipe by the air blown from the blower. The fertilizer transfer pipe is connected to an upstream portion made of a flexible hose and a downstream portion made of a flexible hose via a joint pipe, and the joint pipe is provided with an air bleeder. When fertilizer is clogged in the downstream part of the fertilizer transfer pipe, air escapes from the air bleeding provided in the joint pipe to the outside, so that the fertilizer is discharged from the fertilizer feeding part at least until the downstream part is completely clogged. It takes a considerable amount of time for the fertilizer to be transferred to the downstream side and the downstream part to be completely clogged. It is said that it is possible to avoid the worst situation where fertilizer is clogged tightly.

Japanese Unexamined Patent Publication No. 2004-298194

However, in the above-mentioned conventional technique, the operator may notice the abnormality and take measures until the fertilizer is completely clogged in the fertilizer feeding part, but until the seedling transplanter is distracted by the operation and the clog becomes serious. You may not notice it. In that case, there is a problem that the work is forced to be interrupted for a long time in order to remove the tightly clogged fertilizer.

An object of the present invention is to prevent the occurrence of fertilizer clogging, eliminate the need for clogging removal work, and perform efficient seedling transplanting work in view of the above-mentioned problems in a seedling transplanting machine provided with a conventional fertilizer application device. It is to provide a transplant machine.

The above-mentioned conventional problems are solved by the following technical means.

According to the first aspect of the present invention, the fertilizer hopper (60L, 60R) mounted on the traveling vehicle body (2) is blown from the blower (67) to the feeding portion (61), and the fertilizer hose (62) is passed through the planting device (4). A seedling transplanter (1) equipped with a fertilizer application device (100) that sends fertilizer to the fertilizer application guide (63).
A blower sensor (70) for detecting the drive of the blower electric motor (66) is provided.
The blower sensor (70) is electrically connected to the fertilizer feeding motor (71) via the controller (210).
Upon detecting the drive stop of the blower sensor (70), the fertilizer feeding motor (71) for driving the feeding roll (73A, 74B) of the feeding portion (61) is stopped.
A controller (210) for storing the opening / closing positions of the plurality of fertilizer application shutters (81) provided in the feeding portion (61) of the fertilizer hopper (60L, 60R) is provided.
When the blower sensor (70) is detected to stop, the fertilizer feeding motor (71) is stopped and the entire fertilizer application shutter (81) is closed. Open (81) and
When the traveling vehicle body (2) is stopped for a certain period of time or longer, the drive of the blower electric motor (66) is stopped, but when the traveling is started or the planting clutch is engaged, the blower electric motor (66) is driven, but fertilizer is applied. The clutch is a seedling transplanting machine characterized by returning to the state of full-row fertilization or selective fertilization before stopping stored in the controller (210).
In the second aspect of the present invention, the fertilizer hopper (60L, 60R) mounted on the traveling vehicle body (2) is blown from the blower (67) to the feeding portion (61), and the fertilizer hose (62) is passed through the planting device (4). A seedling transplanter (1) equipped with a fertilizer application device (100) that sends fertilizer to the fertilizer application guide (63).
A blower sensor (70) for detecting the drive of the blower electric motor (66) is provided.
The blower sensor (70) is electrically connected to the fertilizer feeding motor (71) via the controller (210).
Upon detecting the drive stop of the blower sensor (70), the fertilizer feeding motor (71) for driving the feeding roll (73A, 74B) of the feeding portion (61) is stopped.
A fertilizer sensor (77) is provided in the fertilizer hopper (60L, 60R).
During the fertilizer detection of the fertilizer sensor (77), the manual stop of the blower electric motor (66) is disabled.
When the traveling vehicle body (2) is stopped for a certain period of time or longer, the drive of the blower electric motor (66) is stopped, but when the traveling is started or the planting clutch is engaged, the blower electric motor (66) is driven, but fertilizer is applied. The clutch is a seedling transplanting machine characterized by returning to the state of full-row fertilization or selective fertilization before stopping stored in the controller (210).
In the third aspect of the present invention, the feeding portion (61) is provided with a fertilizer discharge port (72) for discharging fertilizer to the outside.
The first or second seedling transplanting machine of the present invention is characterized in that when the discharge shutter (73) provided in the fertilizer discharge port (72) is opened, the blower electric motor (66) is driven.
A fourth aspect of the present invention is characterized in that the fertilizer application shutter (81) provided between the fertilizer hopper (60L, 60R) and the feeding portion (61) opens when the blower electric motor (66) is started. The first or second seedling transplanting machine of the present invention.
The first invention related to the present invention is a planting device in which air is blown from a blower (67) to a feeding portion (61) of a fertilizer hopper (60L, 60R) mounted on a traveling vehicle body (2) and passed through a fertilizer application hose (62). A seedling transplanter (1) equipped with a fertilizer application device (100) for sending fertilizer to the fertilizer application guide (63) of (4).
A blower sensor (70) for detecting the drive of the blower electric motor (66) is provided.
The seedling transplanting machine is characterized in that the fertilizer feeding motor (71) for driving the feeding rolls (73A, 74B) of the feeding section (61) is stopped by detecting the driving stop of the blower sensor (70).

In the second invention related to the present invention, a controller (210) for storing the opening / closing positions of a plurality of fertilizer application shutters (81) provided in the feeding portion (61) of the fertilizer hopper (60L, 60R) is provided.
When the blower sensor (70) stops, the fertilizer feeding motor ( 71 ) is stopped and the entire fertilizer application shutter (81) is closed, and the electric fertilizer application shutter that was opened before the stop when the electric motor for blower (66) was restarted. (81) The seedling transplanting machine of the first invention related to the present invention, which is characterized by opening.

In the third invention related to the present invention, the fertilizer discharge port (72) for discharging fertilizer to the outside is provided in the feeding portion (61).
The seedling transplanting machine of the first invention related to the present invention is characterized in that when the discharge shutter (73) provided in the fertilizer discharge port (72) is opened, the electric motor (66) for a blower is driven.

In the fourth invention related to the present invention, a fertilizer sensor (77) is provided in the fertilizer hopper (60L, 60R).
The seedling transplanting machine of the first invention related to the present invention is characterized in that the manual stop of the electric motor (66) for a blower is disabled while the fertilizer is detected by the fertilizer sensor (77).

In a fifth aspect of the present invention, the fertilizer application shutter (81) provided between the fertilizer hopper (60L, 60R) and the feeding portion (61) opens when the blower electric motor (66) is started. the seedling transplantation machine of the first invention relating to the present invention, wherein.

According to the present invention, it is possible to suppress the occurrence of fertilizer clogging.
In the first invention related to the present invention, the fertilizer feeding motor 71 is driven and the feeding rolls 73A and 74B are rotated while the blower electric motor 66 is driven and blown from the blower 67 to the feeding portion 61. Fertilizer is sent from the feeding section 61 to the fertilizer application hose 62, but when the blower sensor 70 detects that the electric motor 66 for the blower is stopped, the fertilizer feeding motor 71 is stopped and the fertilizer is not supplied from the feeding section 61 to the fertilizer application hose 62. Is not sent to the fertilizer application hose 62, and no fertilizer clogging occurs.

In the second invention related to the present invention, in addition to the effect of the first invention related to the present invention, a part of a plurality of fertilizer application shutters 81 is opened from the fertilizer hoppers 60L and 60R to send fertilizer to the feeding section 61. If the electric motor 66 for the blower is stopped during the fertilizer application work, all the fertilizer application shutters 81 are closed, the fertilizer supply is stopped, and the fertilizer is not sent to the fertilizer application hose 62, so that fertilizer clogging does not occur. However, since the fertilizer application shutter 81 that was open before the stop was opened when the electric motor 66 for the blower was restarted, the fertilizer application work before the stop can be reproduced without the operator operating the fertilizer shutter 81, and the work efficiency is good. ..

In the third invention related to the present invention, in addition to the effect of the first invention related to the present invention , the fertilizer provided in the feeding portion 61 in order to prevent the fertilizer from getting wet when the fertilizer application operation is stopped for a long time. The discharge shutter 73 of the discharge port 72 is opened to take out fertilizer from the fertilizer hoppers 60L and 60R, but at that time, the electric motor 66 for the blower is always driven so that the fertilizer does not remain in the feeding portion 61.

In a fourth invention relating to the present invention, in addition to the effect of the first invention relating to the present invention, the fertilizer hopper 60L, when there remains a fertilizer within 60R blower electric motor 66 and fertilizer feeding motor 71 Since it is not stopped manually, the electric motor 66 for the blower is not stopped due to an erroneous operation and fertilizer is not left in the fertilizer application hose 62.

In a fifth invention relating to the present invention, in addition to the effect of the first invention relating to the present invention, since fertilization shutter 81 when performing fertilization work Start blower electric motor 66 is always open , No planting work without fertilization.

Side view of the seedling transplanter. Top view of the seedling transplanter. Schematic front view showing the fertilizer application transmission mechanism between the fertilizer application device and the rear wheel gear case viewed from the front of the seedling transplanter. The left side sectional view of the feeding part of a fertilizer application device. A side view of a main part of a fertilizer application device, a fertilizer application transmission mechanism, and a delivery amount adjustment mechanism. A block diagram showing a control relationship between various sensors and a member to be controlled, centered on a controller. (A) Schematic view of the seedling transplanter viewed from the front, (b) Schematic view of the bonnet portion of the seedling transplanter viewed from the left side. Schematic view from the left side centering on the driver's seat of the seedling transplanter. Schematic plan view of the fertilizer application device and the driver's seat as viewed from above. (A) A side view of a main part provided with a fertilizer application shutter between a fertilizer hopper and a feeding portion, and (b) a perspective view of a main part of the fertilizer application shutter. (A) A side view of a main part showing a state in which the feeding rotation pin is positioned on the rear side of the feeding rotation arm, and (b) a state in which the feeding rotation pin is positioned in the center portion in the front-rear direction of the feeding rotation arm. Side view of the main part shown. The flowchart of the automatic control example 1 of the electric motor for a blower. The flowchart of the automatic control example 1 of the fertilizer application shutter 81. The flowchart of the automatic control example 2 of the electric motor for a blower. The flowchart of the automatic control example 3 of the electric motor for a blower. The flowchart of the automatic control example 3 of the electric motor for a blower.

Hereinafter, a passenger-type rice transplanter equipped with a fertilizer application device according to an embodiment of the seedling transplanter of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of an 8-row planting passenger-type rice transplanter 1 equipped with a fertilizer application device according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. In this specification, the front-rear and left-right direction standards define the front-rear and left-right reference based on the traveling direction of the vehicle body when viewed from the driver's seat.

In the rice transplanter 1, the planting device 4 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via the elevating link device 3, and the main body portion of the fertilizer application device 100 is provided on the rear upper side of the traveling vehicle body 2.

The traveling vehicle body 2 is a four-wheel drive vehicle provided with a pair of left and right front wheels 10 and a pair of left and right rear wheels 11 as driving wheels. The front wheel final case 13 is provided on the side, and the front wheels 10 are attached to the left and right front wheel axles protruding outward from each front wheel support portion whose steering direction of the left and right front wheel final case 13 can be changed.

Further, the front end portion of the main frame 15 is fixed to the back surface portion of the mission case 12, and the rear wheel gear case 18 is provided as a fulcrum at the rear wheel rolling shaft provided horizontally in the front and rear at the left and right center portions of the rear end of the main frame 15. Is supported to roll freely, and the rear wheels 11 are attached to the left and right rear wheel axles protruding outward from the rear wheel gear case 18.

The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the mission case 12 via the belt transmission device 21 and the HST (hydrostatic stepless transmission) 23.

The rotational power transmitted to the transmission case 12 is shifted by the transmission in the transmission case 12, and then separated into traveling power and external extraction power and taken out. A part of the traveling power is transmitted to the front wheel final case 13 to drive the pair of left and right front wheels 10 and 10, and the rest is transmitted to the rear wheel gear case 18 to drive the pair of left and right rear wheels 11 and 11. do.

Further, the external extraction power is transmitted to the planting clutch case 25 provided at the rear of the traveling vehicle body 2, and then transmitted to the planting device 4 by the planting transmission shaft 26. The upper part of the engine 20 is covered with the engine cover 30, and the driver's seat 31 is installed on the engine cover 30. In front of the driver's seat 31, there is a bonnet 32 having various operation mechanisms built-in, and above the bonnet 32, a steering handle 34 for steering and operating the front wheels 10 is provided.

Further, inside the inside covered with the bonnet 32, the fertilizer application amount setting panel 200 for the operator to set the fertilizer application amount to be sprayed on the field by the fertilizer application device 100, and the controller 210 for controlling the operation of the fertilizer application device 100 and the like. Is stored. The input signal from the fertilizer application amount setting panel 200 is sent to the controller 210 (see FIG. 6).

The left and right sides of the lower ends of the engine cover 30 and the bonnet 32 are horizontal floor steps 35. The floor step 35 is partly in a grid pattern (see FIG. 2), and mud on the shoes of a worker walking on the floor step 35 falls into the field.

The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41. The upper link 40 and the lower link 41 are rotatably attached to a portal-shaped link base frame 42 whose base side is erected at the rear end of the main frame 15 in a rear view, and a vertical link 43 is attached to their tip side. Are concatenated. A connecting shaft 44 rotatably supported by the planting device 4 is inserted and connected to the lower end of the vertical link 43, and the planting device 4 is rotatably connected around the connecting shaft 44.

An elevating hydraulic cylinder 46 is provided between the support member fixed to the main frame 15 and the tip of a swing arm (not shown) integrally formed with the upper link 40, and the elevating hydraulic cylinder 46 is hydraulically expanded and contracted. As a result, the upper link 40 rotates up and down, and the planting device 4 moves up and down while maintaining a substantially constant posture.

The planting device 4 has an eight-row planting configuration, and a planting transmission case 50 that also serves as a frame and a mat seedling (not shown) are placed and reciprocated left and right to move the seedlings one by one to the seedling outlet 49a (Fig.). 2) and when all the seedlings for one horizontal row are supplied to the seedling outlet 49a, the seedlings supplied to the seedling loading platform 51 and the seedling outlet 49a for which the seedlings are transferred downward by the seedling feeding belt 51b. The seedling planting portion 52 and the like for planting the seedlings in the field by the seedling planting tool 52a are provided.

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

The floats 55 and 56 are rotatably attached so that the front end side moves up and down in response to the unevenness of the topsoil surface of the field, and the vertical movement of the front part of the center float 55 during the planting work is the float sensor 1141 (FIG. 6) is detected, and the hydraulic valve (not shown) that controls the elevating hydraulic cylinder 46 is switched according to the detection result to raise and lower the planting device 4, so that the seedling planting depth is always constant. maintain.

The fertilizer application device 100 dispenses a certain amount of granular fertilizer stored in the fertilizer hopper by a feeding section 61 provided for each seedling planting row, and the fertilizer is fed through the fertilizer hose 62 to the center float 55 and the side float. The fertilizer guides 63 attached to both the left and right sides of the 56 are guided to the fertilizer guides 63, and the groove body 64 provided on the front side of the fertilizer guide 63 drops the fertilizer into the fertilizer groove formed near the side portion of the seedling planting strip.

Then, the air generated by the blower 67 driven by the electric motor 66 for the blower is blown into the fertilizer application hose 62 via the air chamber 68 long in the left-right direction, and the fertilizer in the fertilizer application hose 62 is forcibly conveyed by wind pressure. It is configured to do. Further, as shown in FIG. 9, the blower 67 is connected to the end of the intake duct 69 for sucking the air to be the transport air. The intake duct 69 is arranged in the left-right direction on the side opposite to the air chamber 68 (rear side of the machine body) with the feeding portion 61 interposed therebetween, and the base of the intake duct 69 is located in the center part in the left-right direction of the machine body. It is placed behind.

As a result of the above, the intake duct 69 sucks the heat generated from the engine 20 that the radiator (not shown) exhausts heat to the rear, so that the fertilizer transport air can be heated to a high temperature, so that water can be removed from the fertilizer being transported. It is prevented that the fertilizers are removed and the fertilizers become lumps or stick to the transport path such as the air chamber 68 or the fertilizer application hose 62, so that the amount supplied to the field is insufficient.

Further, by warming the fertilizer stored in the feeding section 61 or the fertilizer hopper, the water contained in the stored fertilizer can be removed, so that the fertilizer can be prevented from becoming a lump or sticking, and the fertilizer can be prevented. Can be supplied in set amounts, improving fertilizer application accuracy.

Further, the fertilizer hopper is separated from the left side fertilizer hopper 60L and the right side fertilizer hopper 60R with a certain gap, and is fed below the center portion in the left-right direction of the right side fertilizer hopper 60R. The adjusting mechanism 400 is arranged. Further, the feeding adjustment mechanism 400 is arranged at a space behind the right side of the engine cover 30 that covers the periphery of the engine 20 while mounting the driver's seat 31.

As shown in FIGS. 3 and 5, the feeding adjusting mechanism 400 adjusts the amount of fertilizer applied from the feeding unit 61 for feeding the fertilizer by a set amount by using the driving force transmitted via the fertilizer transmission transmission mechanism 300. It is a mechanism to do. The fertilizer application transmission mechanism 300 and the feeding adjustment mechanism 400 will be further described later.

By arranging the feeding adjustment mechanism 400 below the center of the right fertilizer hopper 60R in the left-right direction, the feeding adjusting mechanism 400 is arranged so as not to interfere with work such as replenishing fertilizer to the left and right fertilizer hoppers 60L and 60R. Therefore, work efficiency is improved. In addition, since the rotation of the left and right fertilizer hoppers 60L and 60R in the front-rear direction is not restricted, the left and right fertilizer hoppers 60L and 60R are tilted backward when the fertilizer is discharged, and the remaining fertilizer is quickly discharged. Is not disturbed.

A fertilizer sensor 77 is provided near the shutter case 80 inside the left side fertilizer hopper 60L and the right side fertilizer hopper 60R, and when the fertilizer sensor 77 stops detecting fertilizer, the controller 210 stops the blower electric motor 66. At the same time, the center mascot that sounds an alarm and displays a warning light and a planting strip provided near the driver's seat 31 is blinked to notify the operator.

Further, while the fertilizer sensor 77 detects the fertilizer, the manual stop of the electric motor 66 for the blower is disabled, and the blower 67 is stopped by an erroneous operation during the fertilizer application operation to prevent the fertilizer from being clogged in the fertilizer application hose 62.

A leveling rotor 27 (a combination of a first leveling rotor 27a and a second leveling rotor 27b may be simply referred to as a leveling rotor 27) is attached to the planting device 4. Further, the seedling mounting table 51 slides in the left-right direction by a support roller 65a slidably supported at the upper end of a rectangular support frame 65 having a full width in the left-right direction and the up-down direction that support the entire planting device 4. It is a configuration to do.

Further, a pair of left and right spare seedling frames 38 on which seedlings for replenishment are placed are provided on both left and right sides of the front portion of the traveling vehicle body 2. A fertilizer reduction setting switch 500 is provided in the vicinity of the operation handle 34, which enables the operator to set the fertilizer application amount to be reduced. For example, the fertilizer application amount is between 0% and 100% reduction. It is a switch that can set any weight loss. The input signal input from the fertilizer reduction setting switch 500 is sent to the controller 210 (see FIG. 6).

Further, an electrode plate 1100 (see FIG. 1) for detecting the fertilizer concentration in the field between the front wheels 10 and 10 is arranged on the pair of left and right front wheels 10 and 10, and the fertilizer concentration detection sensor 1110 (see FIG. 6) is arranged. ). The fertilizer concentration signal detected by the fertilizer concentration detection sensor 1110 is sent to the controller 210. The electrode plate 1100 will be described later.

An inclination detection sensor 1120 (see FIG. 1) for detecting the inclination of the traveling vehicle body 2 is provided at the center of the tip of the traveling vehicle body 2, and the detection result of the inclination detection sensor 1120 is sent to the controller 210 (FIG. 1). 6).

Further, a GPS receiver 1130 (see FIG. 2) having a GPS (Global Positioning System) function is mounted in front of the operation handle 34 and above the bonnet 32, and the received signal is sent to the controller 210 (FIG. 2). 6).

Further, in a plan view, it is used to detect the fertilizer concentration at a position approximately halfway between the outside of the pair of left and right front wheels 10 and 10 and the outside of the floor step 35, in front of the tips of the pair of left and right front wheels 10 and 10. A pair of left and right ultrasonic sensors 1140 are provided to detect the water depth of the field, and the detection result by the ultrasonic sensor 1140 is sent to the controller 210 (see FIG. 6). By attaching the ultrasonic sensor 1140 to the above position, it is possible to prevent erroneous detection of water depth by the mud lifted by the front wheel 10 and prevent damage to the sensor. The detection of water depth data will be described later.

Hereinafter, the configuration of each part of the fertilizer application device 100 will be further described.

FIG. 3 is a schematic front view of the fertilizer application device 100 of the present embodiment when viewed from the front of the rice transplanter 1. Further, FIG. 4 is a left side sectional view of the feeding portion 61 of the fertilizer application device 100 of the present embodiment.

The right fertilizer hopper 60R is shared by the four rows on the right side, and a lid 60a that can be opened and closed is attached to the upper part. The lower part of the right fertilizer hopper 60R branches into the number of fertilizer rows (4 rows) to form a funnel-shaped flow bottom 60b, and the lower part of the funnel-shaped flow bottom 60b is connected to the upper end of each feeding portion 61. .. The left fertilizer hopper 60L has the same configuration as above.

As shown in FIG. 4, the feeding section 61 incorporates two first feeding rolls 73A and a second feeding roll 73B for feeding fertilizer in the right side fertilizer hopper 60R (or in the left side fertilizer hopper 60L) downward. .. The first and second feeding rolls 73A and 73B are rotating bodies having a groove-shaped recess 74 formed in the outer peripheral portion thereof, and are square shaft portions 75a of a common feeding shaft 75 provided in the left-right direction (the illustrated example is a square shaft). ) Are fitted in a structure that rotates integrally with each other. The drive source of the feeding shaft 75 will be described later with reference to FIG.

Further, a frame-shaped shutter case 80 is provided in each strip between the lower part of the lower stream 60b of the left and right fertilizer hoppers 60L and 60R and the feeding portion 61, and the left and right formed before and after the shutter case 80. A plate-shaped fertilizer application shutter 81 is slidably provided in the shutter hole 80a which is long in the direction and short in the vertical direction.

As shown in FIGS. 5 and 10 (a) and 10 (b), the fertilizer application shutter 81 is composed of a plate-shaped member that is long in the front-rear direction and rectangular in a plan view, and the front end side is bent to handle the handle 81a for sliding operation. And immediately after the handle 81a, a fertilizer drop hole 81b having substantially the same shape as the flow bottom 60b is formed. The rear side of the fertilizer drop hole 81b is a drop control portion 81c for preventing the fertilizer from falling.

If the drop control portion 81c is formed with grooves, protrusions, etc. on the upper surface to form an uneven shape, the pressure can be dispersed when the fertilizer is placed, the fertilizer is solidified by its own weight, and the fertilizer falls from the flow bottom 60b. It can be prevented from disappearing.

By providing the fertilizer application shutter 81 as described above, if the fertilizer application shutter 81 is slid so that the drop control portion 81c faces the flow bottom 60b, it is possible to prevent fertilizer from accumulating in the feeding portion 61 when moving to the work field. Therefore, the fertilizer becomes a lump in the feeding portion 61, and the set amount of fertilizer is not supplied to the first feeding roll 73A and the second feeding roll 73B, and the occurrence of poor growth of crops due to lack of fertilizer is prevented.

Although not shown, a shutter solenoid 82 that opens and closes the fertilizer application shutter 81 under the control of the controller 210 is provided. (FIG. 6) The controller 210 stores the open / closed position of the fertilizer application shutter 81 when fertilization is stopped, closes all fertilizer application shutters 81 when fertilization is stopped, and opens the fertilizer application shutter 81 that was open before the stop when fertilization is resumed. do. Further, when the blower electric motor 66 is started, the necessary fertilizer application shutter 81 is opened to ensure that fertilizer is applied.

Further, as shown in the control flowcharts of FIGS. 12 and 13, when the passenger-type rice transplanter 1 is stopped for a certain period of time or longer, the drive of the electric motor 66 for the blower is stopped, but when the traveling is started or the planting clutch is engaged, the blower is stopped. The electric motor 66 is driven, but the fertilizer application clutch returns to the state of full-row fertilization or the selective fertilization state before the stop stored in the controller 210.

The fertilizer application clutch is turned on and off in conjunction with the fertilizer application shutter 81.

FIG. 14 is a control for fully opening the fertilizer application shutter 81 when the planting device 4 is lowered after the traveling vehicle body 2 starts traveling.

FIG. 15 shows on / off control of the blower electric motor 66 by storing the fertilizer application conditions stored in the controller 210 after the fertilizer application shutter 81 is fully opened.

FIG. 16 is a flowchart for controlling the switch of the fertilizer application shutter 81 in the driving state of the blower electric motor 66.

Conventionally, the fertilizer put into the fertilizer hopper has fallen to the similarly narrow feeding portion 61 via the narrow flow bottom 60b, and may be agglomerated by the weight of the fertilizer and may not fall. .. In particular, if bridging occurs by intensively adhering to the inner wall surface of the flow bottom 60b or the feeding portion 61, the fertilizer that has fallen on the bridged portion will be accumulated as it is, and the set amount of fertilizer will not be supplied. there were.

Further, when the fertilizer is clogged in the feeding portion 61 and maintenance work is required, the fertilizer application shutter 81 can regulate the fall of the fertilizer, so that the fertilizer is left in the left and right fertilizer hoppers 60L and 60R. It can be rotated backward as it is, and maintenance work can be performed efficiently.

In the past, it was necessary to temporarily remove the fertilizer in the fertilizer hopper during the maintenance work, which required extra time for the maintenance work, but the above configuration can shorten the work time.

Further, when the first feeding roll 73A and the second feeding roll 73B rotate in the direction of the arrow in FIG. 4, the fertilizer dropped and supplied from the left side fertilizer hopper 60L (or the right side fertilizer hopper 60R) is housed in the recess 74. And is fed downward. The fertilizer delivered by the first feeding roll 73A and the second feeding roll 73B has a front end inserted and connected to the back of the air chamber 68 (see FIGS. 1 and 2) in the front-rear direction, and the fertilizer is discharged at the lower end. It is discharged from 61a to the fertilizer application hose 62.

As shown in FIG. 4, a fertilizer discharge port 72 is formed in the upper shutter case 80 of the feeding portion 61, a discharge shutter 73 for opening and closing the fertilizer discharge port 72 is provided, and a discharge connection pipe (not shown) is provided in the fertilizer discharge port 72. Is connected. When the discharge sensor 78 detects the opening of the discharge shutter 73, the controller 210 outputs the drive of the electric motor 66 for the blower, and the fertilizer is discharged to the outside of the machine by air.

On the other hand, the left end portion of the air chamber 68 is connected to the blower 67 (see FIGS. 1 and 2) via an air switching pipe (not shown), and the air from the blower 67 is connected to the blower 67 via the air chamber 68. When passing through the discharge port 61a of the feeding portion 61, the fertilizer is blown into the fertilizer application hose 62 side while being entrained.

Further, the number of recesses 74 of the first feeding roll 73A and the second feeding roll 73B in the illustrated example is 6, and the recesses 74 of the recesses 74 are arranged in different phases so that the positions of the recesses 74 are not adjacent to each other. Has been done. As a result, the recesses 74 of the first feeding roll 73A and the second feeding roll 73B alternately feed out the fertilizer, and the amount of fertilizer discharged from the discharge port 61a is equalized in time.

By removing any of the first feeding roll 73A and the second feeding roll 73B from the feeding shaft 75 and appropriately changing the phase and reattaching them, the phase of the recess 74 of the first feeding roll 73A and the second feeding roll 73B can be changed. It can be made equal. This makes it applicable when spraying fertilizer in dots in the field.

Further, inside the feeding portion 61, a brush 76 that is in sliding contact with the outer peripheral surfaces of the first feeding roll 73A and the second feeding roll 73B on the side where the recess 74 moves downward (front side) is detachably provided. The brush 76 accommodates fertilizer in the recesses 74 of the first feeding roll 73A and the second feeding roll 73B in a scraped state, and the amount of fertilizer delivered by the first feeding roll 73A and the second feeding roll 73B is kept constant.

The supply path of the driving force for driving and rotating the feeding shaft 75 will be described. As shown in FIGS. 3 and 5, a crank-shaped fertilizer transmission output shaft 461 is provided on the fertilizer transmission transmission clutch 460 provided inside the rear wheel gear case 18 on the right side of the fuselage and inside the fuselage, and the fertilizer transmission output shaft 461 is provided with a crank-shaped fertilizer transmission output shaft 461. A fertilizer transmission drive rod 462 that reciprocates in the vertical direction is provided.

Then, a relay rod 463 that changes the transmission direction of the driving force from the fertilizer transmission drive rod 462 to the front-rear direction of the machine body is arranged in the left-right direction, and the fertilizer application transmission drive rod is located between the fertilizer application transmission drive rod 462 and the relay rod 463. In conjunction with the vertical movement of 462, the swing connection plate 464 is arranged in the vertical direction at both front and rear ends with the swing connection fulcrum pin 464a as a fulcrum, and the driving force is applied to the other end of the relay rod 463. By arranging the sub drive rod 465 transmitted to the arm 467, the fertilizer application transmission mechanism 300 is configured.

The sub-drive rod 465 is arranged below the rear side of the machine body of the fertilizer hopper 60R on the right side, and the feeding shaft 75 is driven and rotated at the upper end of the sub-driving rod 465 according to the amount of fertilizer applied. Connect the rear end of the arm 467. Then, the front end portion of the feeding rotation arm 467 and the feeding shaft 75 are connected by a fertilizer application drive arm 468.

As shown in FIGS. 11A and 11B, the feeding rotation arm 467 is an elongated rectangular parallelepiped housing, and elongated holes 467a are formed on the left and right side surfaces thereof by penetrating the left and right side wall portions. ing. The elongated hole 467a is formed in the front-rear direction, and is arranged so as to penetrate the feeding rotation pin 469 in the elongated hole 467a. The feeding rotation pin 469 has a diameter that allows contact with the upper and lower ends of the elongated hole 467a, and the rotation fulcrum position of the feeding rotation arm 467 is changed by changing the front-rear position of the feeding rotation pin 469. The amount of rotation on the front end side of the fertilizer application drive arm 468 is changed, in other words, the time required for reciprocating rotation is changed, and a plurality of places are formed on the first feeding roll 73A and the second feeding roll 73B per predetermined time. The number of times the fertilizer is dropped from the recess 74 is increased or decreased, and the amount of fertilizer applied is changed accordingly.

For example, as shown in FIG. 11B, the more the feeding rotation pin 469 is moved to the front side of the machine, the smaller the amount of rotation of the feeding rotation arm 467 on the front end side, that is, the shorter the time required for reciprocating rotation. As a result, the amount of rotation of the fertilizer application drive arm 468 is reduced in conjunction with each other, so that the frequency of rotation of the feeding shaft 75 increases. As a result, the rotation angles of the first feeding roll 73A and the second feeding roll 73B in a predetermined time are increased, and the number of recesses 74 reaching the falling position can be increased, so that the amount of fertilizer dropped in the field increases.

On the other hand, as shown in FIG. 11A, the more the feeding rotation pin 469 is moved to the front side or the rear side of the machine body, the larger the rotation amount on the front end side of the feeding rotation arm 467 is, that is, it is required for reciprocating rotation. Since the time becomes long and the amount of rotation of the fertilizer application drive arm 468 increases in conjunction with each other, the frequency of rotation of the feeding shaft 75 decreases. As a result, the rotation angles of the first feeding roll 73A and the second feeding roll 73B in a predetermined time are reduced, and the number of recesses 74 reaching the falling position is reduced, so that the amount of fertilizer dropped in the field is reduced.

As described above, the amount of fertilizer applied to the fertilizer application device 100 can be adjusted by changing the front-rear position of the feeding rotation pin 469. In addition to facilitating the adjustment work of the fertilizer application amount, the signal transmitted by the controller 210 according to the conditions such as the fertilizer content and depth of the field based on the detection of the fertilizer concentration sensor 1110, the ultrasonic sensor 1140, etc. Based on this, as shown in FIGS. 5 and 9, a fertilizer application amount adjusting motor 410 that rotates at high speed in a forward / reverse direction is arranged on the front side of the machine body with respect to the feeding rotation arm 467 in order to automatically adjust the fertilizer application amount. Then, a ball screw 420 is rotatably provided in the fertilizer application amount adjusting motor 410, and a ball nut 430 that is screwed into a spiral groove formed on the surface of the ball screw 420 and moves in the front-rear direction of the machine at high speed is provided. A stroke sensor 440 that detects the amount of forward / backward movement of the ball nut 430 is provided, and the payout rotation pin 469 is provided on the ball nut 430. As a result, the feeding adjustment mechanism 400 is configured.

The fertilizer application amount adjusting motor 410 is surrounded by a motor case 410a, and the upper end surface of the motor case 410a is positioned below the machine body with respect to the fertilizer application shutter 81, and the fertilizer hopper 60R on the right side is located in the left-right direction. It is located near the center of. Specifically, it shall be arranged in the space portion formed between the feeding portions 61 and 61 of the second and third rows and the left and right of the flow bottoms 60b and 60b counting from the right end of the machine body.

In addition to this, the fertilizer application amount adjusting motor 410 is above the air chamber 68 through which the transport air for moving the fertilizer to the fertilizer application hose 62 passes, and on the right side of the machine body from the right rear end portion of the engine cover 30. And it shall be placed at the rear. In addition to this, the front end portion of the motor case 410a is assumed to project toward the front end of the fuselage of the air chamber 68 with respect to the front end of the fuselage.

Further, the feeding rotation pin 469 is arranged closer to the upper side of the machine body than the vertical center portion of the ball nut 430, offsets from the ball screw 420 in a side view, and is located above the ball screw 420. do.

As a result, since the fertilizer application amount adjusting motor 410 does not interfere with the opening / closing operation of the fertilizer application shutter 81, it is not necessary to perform work such as attaching / detaching parts when operating the fertilizer application shutter 81 according to the working state, so that the work efficiency is improved. ..

Further, since the ball screw 420 is located below the machine body with respect to the feed rotation pin 469, the feed adjustment mechanism 400, which is a heavy object, can be arranged closer to the lower side of the machine body, so that the center of gravity of the machine body can be lowered. The running posture is stable, and the seedling planting accuracy and fertilization accuracy are improved.

The fertilizer application amount adjusting motor 410 is provided above the air chamber 68, behind the engine cover 30 and on the right side of the machine body, so that a space is provided around the work position where the maintenance work of the fertilizer application amount adjustment motor 410 and the ball screw 420 is performed. Since the parts can be formed, the efficiency of maintenance work is improved.

Further, since the motor cover 410a of the fertilizer application amount adjusting motor 410 projects toward the front side of the machine body from the front end portion of the air chamber 68, it is possible to prevent the operator from getting too close to the air chamber 68, so that the operator's feet are aired. It is prevented that the fertilizer transport air is not efficiently supplied due to contact with the chamber 68 and trampled, and the fertilizer corresponding to the fertilizer application amount adjusted to the field is supplied.

As a result, it is possible to prevent the seedlings from causing poor growth due to the shortage of fertilizer supplied to the field. Further, by fixing and providing the fertilizer application amount adjusting motor 410, it is possible to prevent the occurrence of vibration even if the ball nut 430 slides on the ball screw 420, and it is possible to prevent the occurrence of minute fluctuations in the fertilizer application amount due to the vibration and fertilize. The amount can be optimized.

Further, by fitting the ball screw 420 within the front-rear width of the fertilizer hopper 60R on the right side, even if the ball screw 420 is rotated by the operation of the fertilizer application amount adjusting motor 410, the operator does not easily touch the ball screw 420, which improves safety. At the same time, the ball screw 420 and the fertilizer application amount adjusting motor 410 are prevented from being damaged by contact, and workability is improved.

In the above configuration, the fertilizer application amount adjusting motor 410 operates when it receives a signal from the controller 210 to increase or decrease the fertilizer application amount, and stops when the stroke sensor 440 detects that the ball nut 430 has moved back and forth to the position where the fertilizer application amount is to be changed. It is a composition. When the ball nut 430 moves, that is, when the feeding rotation pin 469 slides in the front-rear direction to change the fertilizer application amount, the fertilizer application device 100 continues the fertilization work, so that the feeding rotation arm 467 periodically It repeats up and down rotation.

At this time, if the moving speed of the feeding rotation pin 469 that slides in the long hole 467a of the feeding rotation arm 467 in the front-rear direction is high and the moving speed is constant, the long hole having a large vertical rotation width is large. Except for the front side and the rear side of the 467a, in other words, the vicinity of the central portion in the front-rear direction, the feeding rotation pin 469 that moves linearly in the front-rear direction has a long hole 467a of the feeding rotation arm 467 in an inclined posture. If an overload is applied to the feeding rotation arm 467, the feeding rotation arm 467 may be damaged or deformed so that normal rotation cannot be performed.

In order to prevent the above-mentioned problems from occurring, as shown in FIG. 13, the fertilizer application amount adjusting motor 410 is a motor that can be forward-reversed and has a variable speed, and is located at the position of the feeding rotation pin 469 detected by the stroke sensor 440. At the same time, the rotation speed of the fertilizer application amount adjusting motor 410 is changed.

Specifically, when the position of the feeding rotation pin 469 detected by the stroke sensor 440 is the central portion in the front-rear direction of the elongated hole 467a and a fixed section (position) before and after the elongated hole 467a (eg, 2 to 3 cm). Is configured to make the rotation speed of the fertilizer application amount adjusting motor 410 faster than when it is in another section (position), and to move the feeding rotation pin 469 at a high speed.

On the other hand, when the position of the feeding rotation pin 469 detected by the stroke sensor 440 is a predetermined section near the front side of the machine body of the elongated hole 467a or a predetermined section near the rear side of the machine body, the rotation speed of the fertilizer application amount adjusting motor 410 Is slow, in other words, the rotation speed is set to normal, and the feeding rotation pin 469 is moved at a low speed.

Since the amount of forward / backward rotation of the feeding rotation arm 467 in the front-rear direction of the machine centering on the feeding rotation pin 469 is substantially the same in the central portion of the elongated hole 467a in the front-rear direction and its periphery, the feeding rotation pin 469 has a high speed. The load is small even if it moves. On the other hand, in other parts, the amount of forward / backward rotation of the feeding rotation arm 467 in the front-rear direction of the machine centering on the feeding rotation pin 469 is large on one side and small on the other side, so that the feeding rotation pin 469 moves at high speed. Then, a large load is applied.

As in this configuration, the moving speed of the fertilizer application amount adjusting motor 410 is changed according to the front-rear position of the feeding rotation pin 469, so that the load applied to the feeding rotation arm 467 with the movement of the feeding rotation pin 469 is applied. Since it can be suppressed, the durability of the fertilizer application transmission mechanism 300 and the high-speed fertilizer application amount adjustment mechanism 400 is improved.

Next, the storage configuration of the controller 210 will be described with reference to FIGS. 7 (a) and 7 (b).

FIG. 7A is a schematic view of the rice transplanter 1 viewed from the front, and FIG. 7B is a schematic view of the bonnet 32 portion of the rice transplanter 1 viewed from the left side. For convenience, the inside is shown so that the inside can be seen in a state where a part of the surface of the bonnet 32 is broken.

As shown in FIGS. 7 (a) and 7 (b), the frame 220 is configured in a loop shape in the bonnet 32, and the controllers 210 are housed up and down and fixed so as to be removable. With this configuration, the controller 210 can be stored compactly and can be easily taken out, so that maintenance can be improved.

Next, the storage configuration of the battery 230 will be described with reference to FIG. FIG. 8 is a schematic view of the rice transplanter 1 as viewed from the left side centering on the driver's seat portion. Here, corresponding to the storage configuration of the controller 210 described with reference to FIGS. 7 (a) and 7 (b), the battery 230 conventionally stored inside the bonnet 32 is stored in the back side of the elevating step 240. It was configured.

With this configuration, a storage space inside the bonnet 32 can be secured, and the controller 210 can be stored using the storage space. When the traveling vehicle body 2 is traveling forward, the front-back spacing of the seedlings to be planted in the field by the seedling planting tool 52a is such that the inter-strain gear train of the inter-stock transmission mechanism 600 having a plurality of inter-stock gear trains (not shown) is used in the bonnet 32. It is configured to be changed by switching by operating the inter-stock switching lever 601 provided on the lower side. By switching the inter-strain switching lever 601 the number of seedlings planted per tsubo can be switched between 37, 42, 47 ... 70, 80, 90.

1 Passenger rice transplanter (seedling transplanter)
4 Planting device 60L, 60R Fertilizer hopper 61 Feeding part 62 Fertilizer hose 63 Fertilizer guide 66 Electric motor for blower 67 Blower 70 Blower sensor 71 Fertilizer feeding motor 72 Fertilizer discharge port 73 Discharge shutter 73A, 74B Feeding roll 81 Electric fertilizer application shutter 100

Claims (4)

Fertilizer is blown from the blower (67) to the feeding portion (61) of the fertilizer hopper (60L, 60R) mounted on the traveling vehicle body (2), passed through the fertilizer hose (62), and fertilizer is applied to the fertilizer guide (63) of the planting device (4). A seedling transplanter (1) equipped with a fertilizer application device (100) for sending a hose.
A blower sensor (70) for detecting the drive of the blower electric motor (66) is provided.
The blower sensor (70) is electrically connected to the fertilizer feeding motor (71) via the controller (210).
Upon detecting the drive stop of the blower sensor (70), the fertilizer feeding motor (71) for driving the feeding roll (73A, 74B) of the feeding portion (61) is stopped .
A controller (210) for storing the opening / closing positions of the plurality of fertilizer application shutters (81) provided in the feeding portion (61) of the fertilizer hopper (60L, 60R) is provided.
When the blower sensor (70) stops, the fertilizer feeding motor ( 71 ) is stopped and the entire fertilizer application shutter (81) is closed, and the electric fertilizer application shutter that was opened before the stop when the electric motor for the blower (66) was restarted. (81)-out opening,
When the traveling vehicle body (2) is stopped for a certain period of time or longer, the drive of the blower electric motor (66) is stopped, but when the traveling is started or the planting clutch is engaged, the blower electric motor (66) is driven, but fertilizer is applied. The clutch is a seedling transplanting machine characterized by returning to the state of full-row fertilization or selective fertilization before stopping stored in the controller (210). Fertilizer is blown from the blower (67) to the feeding portion (61) of the fertilizer hopper (60L, 60R) mounted on the traveling vehicle body (2), passed through the fertilizer hose (62), and fertilizer is applied to the fertilizer guide (63) of the planting device (4). A seedling transplanter (1) equipped with a fertilizer application device (100) for sending a hose.
A blower sensor (70) for detecting the drive of the blower electric motor (66) is provided.
The blower sensor (70) is electrically connected to the fertilizer feeding motor (71) via the controller (210).
Upon detecting the drive stop of the blower sensor (70), the fertilizer feeding motor (71) for driving the feeding roll (73A, 74B) of the feeding portion (61) is stopped .
A fertilizer sensor (77) is provided in the fertilizer hopper (60L, 60R).
During the fertilizer detection of the fertilizer sensor (77), the manual stop of the blower electric motor (66) is disabled .
When the traveling vehicle body (2) is stopped for a certain period of time or longer, the drive of the blower electric motor (66) is stopped, but when the traveling is started or the planting clutch is engaged, the blower electric motor (66) is driven, but fertilizer is applied. The clutch is a seedling transplanting machine characterized by returning to the state of full-row fertilization or selective fertilization before stopping stored in the controller (210). A fertilizer discharge port (72) for discharging fertilizer to the outside is provided in the feeding portion (61).
The seedling transplanting machine according to claim 1 or 2 , wherein when the discharge shutter (73) provided in the fertilizer discharge port (72) is opened, the blower electric motor (66) is driven. The first or second claim, wherein the fertilizer application shutter (81) provided between the fertilizer hoppers (60L, 60R) and the feeding portion (61) opens when the blower electric motor (66) is started. Seedling transplanter.

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