JP2019106896A - Seedling transplanter - Google Patents

Abstract

To address such a problem of the conventional seedling transplanter that, as long as an operator notice abnormality and takes measures, there is no problem, however, the operator preoccupied with handling of the seedling transplanter often does not notice it until jamming becomes serious, and in that case, long-time operation interruption is required for removal of stiffly-jammed fertilizer.SOLUTION: A sulky rice transplanter 1 includes a fertilizer applicator 100 that blows air from a blower 67 to a delivery part 61 of fertilizer hoppers 60L and 60R mounted on a traveling vehicle body 2 and sends a fertilizer via fertilization hose 62 to a fertilization guide 63 of a planting device 4. The sulky rice transplanter 1 further includes a blower sensor 70 for detecting drive of a blower electric motor 66, and, upon detection of the drive stop of the blower sensor 70, stops a fertilizer delivery motor 71 that drives delivery rolls 73A and 74B of the delivery part 61.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a seedling transplanting machine equipped with a fertilization device capable of fertilizing while transplanting seedlings.

  The seedling transplanting machine with a fertilization device improves efficiency by fertilizing at the same time as seedling transplanting work, but fertilizers tend to be clogged in the fertilization device. In the technology, a fertilizer hopper is provided at the rear of the passenger car body, and the fertilizer fed from the fertilizer hopper to the fertilizer delivery unit is transported to the fertilization guide provided in the planting section through the fertilizer transfer pipe with air blowing out from the blower. The fertilizer transfer pipe is connected with an upstream portion made of a flexible hose and a downstream portion made of a flexible hose via a connecting pipe, and the connecting pipe is provided with an air vent. Then, when the fertilizer is clogged in the downstream portion of the fertilizer transfer pipe, the air escapes from the air vent provided in the joint pipe to the outside, so it is fed out from the fertilizer delivery portion at least until the downstream portion is completely clogged As it takes considerable time for the fertilizer to be transported downstream and the downstream part to be completely clogged, a fertilizer clog is found during that time and appropriate action can be taken, so It can be said that it can avoid the worst situation in which the fertilizer gets clogged up hard.

JP 2004-298194 A

  However, in the above-mentioned prior art, it is sufficient for the operator to notice an abnormality and take measures before the fertilizer delivery part is completely filled with the fertilizer, but until the operation of the seedling transplanter is distracted and the clogging becomes serious. You may not notice it. In that case, there is a problem that it is forced to interrupt the work for a long time to remove the tightly packed fertilizer.

  SUMMARY OF THE INVENTION In view of the above problems in a seedling transplanting machine provided with a conventional fertilization apparatus, an object of the present invention is a seedling capable of effectively carrying out a seedling transplanting task by preventing the occurrence of clogging It is providing a transplant machine.

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

Invention of claim 1 blows from the blower (67) to the delivery section (61) of the fertilizer hopper (60L, 60R) mounted on the traveling vehicle body (2) and passes the fertilization hose (62) to blow the planting device (4) A seedling transplanting machine (1) equipped with a fertilization device (100) for feeding fertilizer to a fertilization guide (63),
A blower sensor (70) for detecting the drive of the blower motor (66);
A seedling transplanting machine is characterized in that a 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).

The invention according to claim 2 is provided with a controller (210) for storing the opening and closing positions of a plurality of fertilization shutters (81) provided in the feeding portion (61) of the fertilizer hopper (60L, 60R).
When the blower sensor (70) detects a stop, the blower electric motor (66) is stopped and the full fertilization shutter (81) is closed, and the blower electric motor (66) is opened when the blower electric motor (66) restarts The seedling transplanting machine according to claim 1, characterized in that (81) is opened.

According to the invention of claim 3, the delivery portion (61) is provided with a fertilizer discharge port (72) for discharging the fertilizer to the outside,
The seedling transplanting machine according to claim 1, wherein the blower electric motor (66) is driven when a discharge shutter (73) provided in the fertilizer discharge port (72) is opened.

Invention of Claim 4 provides a fertilizer sensor (77) in the said fertilizer hopper (60L, 60R),
The seedling transplanting machine according to claim 1, wherein the manual stop of the blower electric motor (66) is disabled during the detection of the fertilizer by the fertilizer sensor (77).

  The invention according to claim 5 is characterized in that the fertilizer application shutter (81) provided between the fertilizer hopper (60L, 60R) and the delivery part (61) is opened when the blower electric motor (66) is activated. It is considered as the seedling transplanting machine of item 1.

  According to the invention of claim 1, the fertilizer delivery motor 71 is driven while the blower electric motor 66 is driven and the blower 67 blows air from the blower 67 to rotate the delivery rolls 73A, 74B to deliver the fertilizer. 61 is sent to the fertilization hose 62, but when the blower sensor 70 detects that the blower electric motor 66 is stopped, the fertilizer feeding motor 71 is stopped and the fertilizer is not supplied from the feeding portion 61 to the fertilizing hose 62. Are not sent to the plant, and no fertilizer clogged up.

  In the invention of claim 2, in addition to the effect of claim 1, when a portion of the plurality of fertilization shutters 81 is opened from the fertilizer hoppers 60L and 60R and the fertilizer is sent to the feeding portion 61 to perform the fertilization operation, When the blower motor 66 is stopped, all fertilizer application shutters 81 are closed to stop the supply of fertilizer and fertilizer is not sent to the fertilization hose 62, so no fertilizer clogging occurs, but the blower motor 66 is restarted. Since the fertilization shutter 81 opened before stopping is opened at the time of stopping, the fertilization work before stopping can be reproduced without the operator operating the fertilizing shutter 81, and work efficiency is good.

  In the invention of claim 3, in addition to the effect of claim 1, when the fertilizing operation is stopped for a long time, the discharge shutter 73 of the fertilizer discharge port 72 provided in the feeding portion 61 is opened to prevent the fertilizer from getting wet. Although the fertilizer is taken out from the fertilizer hoppers 60L and 60R, the blower electric motor 66 is always driven so that the fertilizer does not remain in the feeding portion 61.

  In the invention of claim 4, in addition to the effect of claim 1, since the blower electric motor 66 and the fertilizer feeding motor 71 do not stop manually if fertilizer remains in the fertilizer hoppers 60L and 60R, the operation for the blower is erroneous. The electric motor 66 is stopped to leave no fertilizer in the fertilization hose 62.

  In the invention of claim 5, in addition to the effect of claim 1, the fertilization shutter 81 is always open when the blower electric motor 66 is activated to perform the fertilization operation, so the planting operation is performed without fertilization. There is no such thing.

Side view of a seedling transplanting machine. The top view of a seedling transplanting machine. The schematic front view which shows the fertilization transmission mechanism between the fertilization apparatus looked at from the front of a seedling transplanting machine, and a rear wheel gear case. The left side sectional view of the delivery part of a fertilization device. The principal part side view of a fertilization apparatus, a fertilization transmission mechanism, and a delivery amount adjustment mechanism. The block diagram which shows the control relationship of various sensors and the member used as a control object centering on a controller. (A) Schematic which looked at a seedling transplanting machine from the front, (b) Schematic which looked at the bonnet part of a seedling transplanting machine from the left side. The schematic seen from the left side centering on the driver's seat part of a seedling transplanting machine. The schematic plan view which looked at a fertilization apparatus and a driver's seat from upper direction. (A) Side view of the main part which provided the fertilization shutter between a fertilizer hopper and a delivery part, (b) Principal part perspective view of a fertilization shutter. (A) Main part side view showing the delivery rotation pin positioned on the rear side of the delivery rotation arm, (b) The delivery rotation pin located in the longitudinal center of the delivery rotation arm The principal part side view which shows. FIG. 7 is a flowchart of a first example of automatic control of a blower electric motor. FIG. 10 is a flowchart of an automatic control example 1 of the fertilization shutter 81. FIG. 10 is a flowchart of a second example of automatic control of the blower electric motor. FIG. 10 is a flowchart of a third example of automatic control of a blower electric motor. FIG. 10 is a flowchart of a third example of automatic control of a blower electric motor.

  Hereinafter, a riding type rice transplanter equipped with a fertilizing device according to an embodiment of a seedling transplanting machine of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of an 8-row planting type rice transplanter 1 equipped with a fertilization apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. In the present specification, the front, rear, left and right direction references define the front, rear, left and right references with reference to the traveling direction of the vehicle body as 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 capable of moving up and down via the elevating link device 3, and the main body portion of the fertilizing 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 which are driving wheels. The transmission case 12 is disposed at the front of the vehicle body. A front wheel final case 13 is provided on the side, and front wheels 10 are attached to left and right front wheel axles projecting outward from respective front wheel support portions capable of changing the steering directions of the left and right front wheel final cases 13.

  The front end of the main frame 15 is fixed to the rear surface of the transmission case 12, and the rear wheel gear case 18 is supported by a rear wheel rolling shaft provided horizontally at the rear center of the rear end of the main frame 15. Is rotatably supported, and the rear wheels 11 are respectively attached to left and right rear wheel axles which project outward from the wheel gear case 18 thereafter.

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

  The rotational power transmitted to the transmission case 12 is shifted by the transmission in the transmission case 12 and then separated into the traveling power and the externally extracted 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 remainder 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 externally extracted power is transmitted to a 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 an engine cover 30, and a driver's seat 31 is installed thereon. In front of the driver's seat 31, there is a bonnet 32 containing various operation mechanisms, and above it, a steering handle 34 for steering the front wheel 10 is provided.

  In addition, a fertilization amount setting panel 200 for the operator to set the fertilization amount to be sprayed to the field by the fertilization device 100, and a controller 210 for controlling the operation of the fertilization device 100, etc. inside the hood 32 covered. Is stored. An input signal from the fertilization amount setting panel 200 is sent to the controller 210 (see FIG. 6).

  The lower end left and right sides of the engine cover 30 and the bonnet 32 form a horizontal floor step 35. The floor step 35 is partially in the form of a grid (see FIG. 2), and the mud attached to the shoes of the worker walking on the floor step 35 is configured to fall into the field.

  The lifting 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 the gate base link base frame 42 in a rear view in which the base sides thereof are erected at the rear end of the main frame 15, and the vertical links 43 Are linked. 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 connected so as to be able to roll around the connecting shaft 44.

  A lifting 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 on the upper link 40, and the lifting hydraulic cylinder 46 is hydraulically expanded and contracted. As a result, the upper link 40 pivots up and down, and the planting device 4 moves up and down while maintaining a substantially fixed posture.

  The planting device 4 is an eight-row planting construction, with a planting transmission case 50 also serving as a frame, mat seedlings (not shown) placed on it, reciprocating left and right, and each row of seedlings for each row of seedling outlet 49a (see 2) while supplying the whole row of seedlings to the seedling outlet 49a, the seedling feeding table 51 which transfers the seedlings downward by the seedling feeding belt 51b, and the seedlings supplied to the seedling outlet 49a And a seedling planting unit 52 for planting the plant with a seedling planting tool 52a.

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

  Each float 55, 56 is rotatably attached so that the front end side moves up and down corresponding to the unevenness of the soil surface of the field, and vertical movement of the front part of the center float 55 is float sensor 1141 (Fig. The seedling planting depth is always kept constant by switching the hydraulic valve (not shown) detected by 6) and controlling the elevating hydraulic cylinder 46 according to the detection result and moving the planting device 4 up and down. maintain.

  Fertilizer 100 delivers granular fertilizer stored in the fertilizer hopper by a fixed amount by a feeder 61 provided for each seedling planting strip, and the fertilizer is fed through center hose 55 and side float through fertilizer hose 62. It guides to the fertilization guide 63 attached to the right and left both sides of 56, and it has a structure dropped by the grooved member 64 provided in the front side of the fertilization guide 63 in the fertilization groove formed near the side part of a seedling attachment strip.

  Then, the air generated by the blower 67 driven by the blower electric motor 66 is blown into the fertilization hose 62 via the air chamber 68 long in the left-right direction, and the fertilizer in the fertilization hose 62 is forcibly transported by wind pressure. Is configured to Further, as shown in FIG. 9, the blower 67 is connected to an end of an intake duct 69 for sucking in air serving as a carrier wind. The intake duct 69 is disposed on the opposite side of the air chamber 68 (on the rear side of the machine) with respect to the feeding portion 61 and is directed toward the left and right. Are located behind the.

  As described above, the intake duct 69 sucks the heat generated from the engine 20 which exhausts heat to the rear by the radiator (not shown), so that the conveying air of the fertilizer can be heated to a higher temperature. It is removed, and the fertilizers do not clump, or stick to the transport path such as the air chamber 68 and the fertilization hose 62, etc., so that the amount supplied to the field is prevented from being insufficient.

  In addition, since the water contained in the stored fertilizer can also be removed by warming up the fertilizer stored in the feeding part 61 and the fertilizer hopper, it is possible to prevent the fertilizer from becoming a lump or stick further, It becomes possible to supply each set amount, and fertilization accuracy is improved.

  Further, the fertilizer hoppers are separated and disposed with a certain gap between the left fertilizer hopper 60L and the right fertilizer hopper 60R, and the lower part near the central portion in the left-right direction of the right fertilizer hopper 60R feeds out. An adjustment mechanism 400 is arranged. Further, the delivery adjustment mechanism 400 places the driver's seat 31 and is disposed at the right rear of the engine cover 30 covering the periphery of the engine 20 with an interval.

  As shown in FIGS. 3 and 5, the feeding adjustment mechanism 400 adjusts the amount of fertilization delivered from the feeding part 61 for delivering a set amount of fertilizer by using the driving force transmitted through the fertilization transmission mechanism 300. Is a mechanism to The fertilization transmission mechanism 300 and the delivery adjustment mechanism 400 will be further described later.

  The delivery adjustment mechanism 400 is disposed below the vicinity of the center portion in the left-right direction of the right fertilizer hopper 60R, so that the delivery adjustment mechanism 400 does not interfere with operations such as supplying fertilizer to the left and right fertilizer hoppers 60L and 60R. Work efficiency is improved. In addition, since the rotation of the left and right fertilizer hoppers 60L and 60R is not restricted, the left and right fertilizer hoppers 60L and 60R should be inclined rearward to discharge the remaining fertilizer promptly when discharging the fertilizer or the like. Is not disturbed.

  A fertilizer sensor 77 is provided near the shutter case 80 inside the left fertilizer hopper 60L and the right fertilizer hopper 60R, and the controller 210 stops the blower motor 66 when the fertilizer sensor 77 does not detect fertilizer. At the same time, the operator is notified by flashing a center mascot that sounds an alarm or displays a warning light provided near the driver's seat 31 and a planting strip.

  In addition, while the fertilizer sensor 77 detects fertilizer, the manual stop of the blower electric motor 66 is disabled, and the blower 67 is stopped by mistake during the fertilization operation to prevent the fertilizer from clogging the fertilizer hose 62.

  The planting device 4 is provided with a leveling rotor 27 (a combination of the first leveling rotor 27a and the second leveling rotor 27b may be simply referred to as the leveling rotor 27). In addition, the seedling loading stand 51 slides in the lateral direction by a support roller 65a slidably supported at the upper end portion of a rectangular support frame body 65 having a full width in the lateral direction and the vertical direction that supports the entire planting device 4 Configuration.

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

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

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

  Furthermore, a GPS receiver 1130 (see FIG. 2) equipped with 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 (see FIG. 6).

  In addition, it is used for detection of fertilizer concentration at a substantially intermediate position between the outside of the pair of left and right front wheels 10, 10 and the outside of the floor step 35 in front of the tip of the pair of left and right front wheels 10, 10 in plan view. A pair of ultrasonic sensors 1140 on the left and right are provided to detect the depth of water in 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, the mud lifted by the front wheel 10 can prevent erroneous detection of water depth and prevent damage to the sensor. The detection of water depth data will be further described later.

  Hereinafter, the structure of each part of the fertilization apparatus 100 is further demonstrated.

  FIG. 3: is a schematic front view when the fertilization apparatus 100 of this Embodiment is seen from the front of the rice transplanter 1. As shown in FIG. Moreover, FIG. 4 is a left side cross-sectional view of the delivery portion 61 of the fertilizing device 100 of the present embodiment.

  The right fertilizer hopper 60R is shared by the four right bars, and an openable lid 60a is attached to the top. The lower part of the right fertilizer hopper 60R is branched into several parts (four lines) of fertilization streaks to form a funnel-like flowing lower part 60b, and the lower part of the flowing lower 60b is connected to the upper end of each delivery section 61 . The left fertilizer hopper 60L has the same configuration as the above.

  As shown in FIG. 4, the feeding unit 61 incorporates two first delivery rolls 73A and second delivery rolls 73B for delivering the fertilizer in the right fertilizer hopper 60R (or in the left fertilizer hopper 60L) downward. . The first and second delivery rolls 73A and 73B are rotary members having a groove-like recess 74 formed in the outer peripheral portion, and an angular shaft portion 75a of a common delivery shaft 75 provided in the left and right direction ) In an integrally rotating configuration. The drive source of the delivery shaft 75 will be described later with reference to FIG.

  In addition, frame-shaped shutter cases 80 are provided on each strip between the lower portion of the lower flow portion 60b of the lower left and right fertilizer hoppers 60L and 60R and the delivery portion 61, and the left and right formed on the front and rear of the shutter cases 80. A plate-shaped fertilization shutter 81 is slidably provided in a shutter hole 80 a which is long in the direction and short in the vertical direction.

  As shown in FIGS. 5 and 10 (a) and (b), the fertilization shutter 81 is formed of a rectangular plate-like member which is long in the front and rear direction and rectangular in plan view, and the handle 81a for sliding operation by bending the front end side. And a fertilizer drop hole 81b of substantially the same shape as the flow-down portion 60b is formed immediately after the handle 81a. The rear side of the fertilizer drop hole 81b is a drop regulating portion 81c for preventing the fall of the fertilizer.

  In addition, when the drop restricting portion 81c has a groove, a protrusion, or the like formed on the upper surface and has a non-flat shape, the pressure can be dispersed when the fertilizer is applied, the fertilizer is solidified by its own weight, and the fertilizer falls from the flowing portion 60b. It can prevent that it does not do.

  By providing the fertilization shutter 81 described above, if the fertilization shutter 81 is made to slide and the fall restricting portion 81c is faced to the downflow 60b, it is prevented that the fertilizer is accumulated in the feeding portion 61 when moving to the work field Since the fertilizer can be lumped in the feeding portion 61, the set amount of fertilizer is not supplied to the first delivery roll 73A and the second delivery roll 73B, and the occurrence of the growth defect of the crop due to the lack of the fertilizer can be prevented.

  In addition, although illustration is abbreviate | omitted, shutter solenoid 82 which opens and closes the fertilization shutter 81 by control of the controller 210 is provided. (Fig. 6) The controller 210 stores the open / close position of the fertilization shutter 81 at the time of stopping the fertilization, closes all the fertilizing shutters 81 at the time of stopping, and opens the fertilizing shutter 81 opened before stopping at the time of resumption of fertilization. Do. Further, when the blower electric motor 66 is activated, the necessary fertilization shutter 81 is opened to ensure that fertilization is performed.

  Also, as shown in the control flowcharts of FIGS. 12 and 13, when the riding type rice transplanter 1 is stopped for a predetermined time or more, the driving of the blower electric motor 66 is stopped, but when traveling is started or the planting clutch is engaged, the blower The electric motor 66 is driven, but the fertilization clutch returns to the state of selective fertilization before stopping which is stored in the all-row fertilization or the controller 210.

  The fertilization clutch is turned on / off in conjunction with the fertilization shutter 81.

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

  In FIG. 15, after the fertilization shutter 81 is fully opened, the blower electric motor 66 is on / off controlled by storing the fertilization conditions stored in the controller 210.

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

  In the past, the fertilizer introduced into the fertilizer hopper was similarly dropped to the narrow delivery portion 61 via the narrow downstream portion 60b, and sometimes lumped by the weight of the fertilizer and did not fall . In particular, when concentratedly adhering to the inner wall surface of the inflow portion 60b or the feeding portion 61 to cause bridging, the fertilizer dropped to the bridged portion is accumulated as it is, and a set amount of fertilizer can not be supplied. there were.

  In addition, when the clogging of the fertilizer occurs in the feeding portion 61 and the need for maintenance work arises, the fertilizer shutter can control the fall of the fertilizer by the fertilization shutter 81, so the fertilizer was left in the left and right fertilizer hoppers 60L and 60R. It can be turned backward and maintenance work can be performed efficiently.

  Conventionally, at the time of maintenance work, it is necessary to temporarily remove the fertilizer in the fertilizer hopper, and extra time is required for the maintenance work. However, with the above configuration, the working time can be shortened.

  Further, when the first delivery roll 73A and the second delivery roll 73B rotate in the arrow direction of FIG. 4, the fertilizer dropped and supplied from the left fertilizer hopper 60L (or the right fertilizer hopper 60R) is accommodated in the recess 74. It is fed out downwards. The fertilizer fed out by the first delivery roll 73A and the second delivery roll 73B is inserted into and connected to the back of the air chamber 68 (see FIG. 1 and FIG. 2) at the front end in the longitudinal direction, It discharges to the fertilization hose 62 from 61a.

  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 blower electric motor 66, and the air is used to discharge the fertilizer out of the machine without remaining.

  On the other hand, the left end 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 via the air chamber 68 At the time of passing through the discharge port 61 a of the feeding portion 61, it is configured to be blown into the fertilization hose 62 side while winding up the fertilizer.

  Further, the number of the concave portions 74 of the first delivery roll 73A and the second delivery roll 73B in the illustrated example is six, and the phases thereof are arranged to be different so that the positions of the concave portions 74 are not adjacent to each other. It is done. Thereby, each recessed part 74 of the 1st delivery roll 73A and the 2nd delivery roll 73B draws out a fertilizer alternately, and the quantity of the fertilizer discharged from the discharge port 61a is equalized temporally.

  By removing one of the first delivery roll 73A and the second delivery roll 73B from the delivery shaft 75 and changing the phase appropriately and attaching it again, the phase of the recess 74 of the first delivery roll 73A and the second delivery roll 73B is It can also be made equal. This makes it possible to apply the fertilizer to the field in the form of dots.

  In the inside of the delivery portion 61, a brush 76 slidably contacting the outer peripheral surface of the first delivery roll 73A and the second delivery roll 73B on the side (front side) where the recess 74 moves downward is detachably provided. Fertilizers are stored in the recessed portions 74 of the first delivery roll 73A and the second delivery roll 73B in a sliding manner by the brush 76, and the amount of fertilizer delivery by the first delivery roll 73A and the second delivery 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 FIG. 3 and FIG. 5, the fertilization transmission clutch 460 provided inside the rear wheel gear case 18 on the right side of the machine body is provided with a crank-shaped fertilization transmission output shaft 461. A fertilization transmission drive rod 462 reciprocating in the vertical direction is provided.

  A relay rod 463 for changing the transmission direction of the driving force from the fertilization transmission drive rod 462 to the longitudinal direction of the machine is disposed in the left-right direction, and the fertilization transmission drive rod is disposed between the fertilization transmission drive rod 462 and the relay rod 463. Both the front and rear ends arrange the rocking connection plate 464 in the vertical direction with the rocking connection fulcrum pin 464a as a fulcrum interlocking with the vertical movement of the 462, and the delivery rotation which the driving force will be described later to the other end of the relay rod 463 By arranging the sub drive rod 465 transmitting to the arm 467, the fertilization transmission mechanism 300 is configured.

  The sub drive rod 465 is disposed on the lower side of the rear side of the fertilizer hopper 60R on the right side, and the upper end portion of the sub drive rod 465 drives and rotates the delivery shaft 75 according to the fertilization amount. The rear end of the arm 467 is connected. Then, the front end portion of the delivery rotation arm 467 and the delivery shaft 75 are connected by a fertilization drive arm 468.

  As shown in FIGS. 11 (a) and 11 (b), the feeding and rotating arm 467 is an elongated substantially rectangular housing, and left and right side wall portions are penetrated to form long holes 467a on the left and right side surfaces. ing. The elongated hole 467a is formed in the front-rear direction, and the delivery rotation pin 469 is disposed to penetrate through the elongated hole 467a. The feeding rotation pin 469 has a diameter capable of contacting the upper and lower end portions of the elongated hole 467a, and the position of the rotation fulcrum of the feeding rotation arm 467 is changed by changing the longitudinal position of the feeding rotation pin 469. The amount of rotation on the front end side of the fertilization drive arm 468, that is, the time required for reciprocation is changed, and a plurality of points are formed on the first delivery roll 73A and the second delivery roll 73B per predetermined time. The number of times the fertilizer is dropped from the recess 74 is increased or decreased, whereby the amount of fertilization is changed.

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

  On the other hand, as shown in FIG. 11A, as the delivery rotation pin 469 is moved to the front side or the rear side of the machine, the amount of rotation of the front end portion of the delivery rotation arm 467 is large, that is, required for reciprocating rotation. Since the time lengthens and the amount of rotation of the fertilization drive arm 468 increases in conjunction, the frequency of rotation of the feeding shaft 75 decreases. As a result, the rotation angles of the first delivery roll 73A and the second delivery roll 73B in a predetermined time decrease, and the number of recesses 74 reaching the drop position decreases, so that the fertilizer falling into the field decreases.

  As described above, the fertilization amount of the fertilizer application device 100 can be adjusted by changing the front-rear position of the feeding rotation pin 469. While facilitating the adjustment work of this fertilization amount, based on the detection of the fertilizer concentration sensor 1110, the ultrasonic sensor 1140, etc., according to the conditions such as fertilizer content and depth of the field, the signal transmitted by the controller 210 In order to automatically adjust the amount of fertilization based on the method, as shown in FIGS. 5 and 9, a fertilization amount adjustment motor 410 that rotates at high speed in both forward and reverse directions is disposed on the front side of the delivery rotation arm 467. Then, a ball screw 420 is rotatably provided on the fertilization amount adjusting motor 410, and a ball nut 430 which is screwed into a spiral groove formed on the surface of the ball screw 420 to move in the longitudinal direction of the machine at high speed is provided. A stroke sensor 440 for detecting the amount of back and forth movement of the ball nut 430 is provided, and the feeding rotation pin 469 is provided on the ball nut 430. Thus, the feeding adjustment mechanism 400 is configured.

  The fertilization amount adjustment motor 410 is surrounded by the motor case 410a, and the upper end surface of the motor case 410a is positioned lower than the fertilization shutter 81, so that the right side of the fertilizer hopper 60R is It is placed near the center of the Specifically, it is arranged in the space part which occurs between the left and right of the second and third line delivery parts 61 and 61 and the inflow parts 60b and 60b counting from the right end of the aircraft.

  In addition to this, the fertilization amount adjustment motor 410 is above the air chamber 68 through which the transfer air for moving the fertilizer to the fertilizer hose 62 passes, and is further to the right of the rear end of the engine cover 30 on the right side of the fuselage. And shall be located at the rear. In addition to this, the front end portion of the motor case 410a is projected to the front side of the air chamber 68 with respect to the front end portion of the airframe 68.

  Furthermore, the delivery rotation pin 469 is disposed closer to the upper side of the machine than the vertical central portion of the ball nut 430, offset from the ball screw 420 in a side view, and positioned above the ball screw 420. Do.

  As described above, since the fertilization amount adjustment motor 410 does not disturb the opening / closing operation of the fertilization shutter 81, the operation of the fertilization shutter 81 does not require any work such as removal of parts when operating according to the working condition. .

  In addition, since the ball screw 420 is positioned lower than the delivery rotation pin 469, the delivery adjustment mechanism 400, which is a heavy object, can be disposed closer to the lower side of the vehicle, lowering the center of gravity of the vehicle. The running posture is stabilized, and the planting accuracy and fertilization accuracy of the seedlings are improved.

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

  Furthermore, since the motor cover 410a of the fertilization amount adjustment motor 410 projects to the front side of the airframe 68 with respect to the front end of the air chamber 68, the worker can be prevented from coming close to the air chamber 68, so the worker's foot is air The contact with the chamber 68 causes crushing, so that the transport air of the fertilizer is not efficiently supplied, and the fertilizer corresponding to the adjusted amount of fertilizer is supplied to the field.

  By the above, the fertilizer supplied to the field runs short, and it is prevented that a seedling causes poor growth. Further, by providing the fertilization amount adjusting motor 410 in a fixed manner, even if the ball nut 430 slides on the ball screw 420, the occurrence of vibration can be prevented, and the occurrence of the fluctuation of the minute fertilization amount due to the vibration is prevented. The quantity can be optimized.

  Furthermore, by placing the ball screw 420 within the longitudinal width of the fertilizer hopper 60R on the right side, even if the ball screw 420 is rotated by the operation of the fertilizer amount adjustment motor 410, the operator hardly touches the ball screw 420, thereby improving safety. At the same time, damage to the ball screw 420 and the fertilization amount adjustment motor 410 due to the contact is prevented, and the workability is improved.

  In the above configuration, the fertilization amount adjustment motor 410 operates when receiving a signal to increase or decrease the fertilization amount from the controller 210, and stops when the stroke sensor 440 detects that the ball nut 430 moves back and forth to the position of the fertilization amount to be changed. It is a structure. When the movement of the ball nut 430, that is, the feeding rotation pin 469 slides in the front-rear direction to change the fertilization amount, the fertilizing device 100 continues the fertilizing operation, so the feeding rotation arm 467 periodically Vertical rotation is repeated.

  At this time, if the moving speed of the delivery rotating pin 469 sliding in the front and back direction in the long hole 467a of the delivery rotating arm 467 is fast and the moving speed is uniform, the long hole with a large vertical swing width The delivery rotation pin 469, which linearly moves in the front-rear direction, is a long hole 467a of the delivery rotation arm 467 in which the delivery rotation pin 469 that moves linearly in the front-rear direction is inclined. When the delivery rotation arm 467 is overloaded, there is a problem that the delivery rotation arm 467 is damaged or deformed so that normal rotation can not be performed.

  In order to prevent the occurrence of the above problem, as shown in FIG. 13, the fertilization amount adjusting motor 410 is a motor capable of rotating in the forward and reverse directions and having a variable speed, and at the position of the delivery rotation pin 469 detected by the stroke sensor 440. At the same time, the rotational speed of the fertilizer amount adjustment motor 410 is changed.

  Specifically, when the position of the delivery rotation pin 469 detected by the stroke sensor 440 is the longitudinal center of the long hole 467a and a constant (eg, 2 to 3 cm) section (position) before and after it. In this configuration, the rotation speed of the fertilizer amount adjustment motor 410 is made faster than in the other section (position), and the delivery rotation pin 469 is moved at high speed.

  On the other hand, when the position of the delivery rotation pin 469 detected by the stroke sensor 440 is a predetermined section near the front of the machine of the long hole 467a or a predetermined section near the rear of the machine, the rotation speed of the fertilizer amount adjustment motor 410 Is set to move slowly at a low speed, in other words, to a normal rotational speed.

  Since the longitudinal rotation amount of the delivery rotation arm 467 in the longitudinal direction of the machine centering on the delivery rotation pin 469 becomes substantially the same in the longitudinal center of the long hole 467a and the periphery thereof, the delivery rotation pin 469 is high speed Even if it moves, the load is small. On the other hand, in the other parts, the amount of longitudinal rotation of the delivery rotational arm 467 in the longitudinal direction of the machine centering on the delivery rotational pin 469 is large at one side and small at the other, so the delivery rotational pin 469 moves at high speed Then the load is large.

  By changing the moving speed of the fertilization amount adjustment motor 410 according to the back and forth position of the delivery rotation pin 469 as in this configuration, the load applied to the delivery rotation arm 467 with the movement of the delivery rotation pin 469 is Since the amount can be reduced, the durability of the fertilizer transmission mechanism 300 and the high-speed fertilization 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.7 (a) is the schematic which looked the rice transplanter 1 from the front, FIG.7 (b) is the schematic which looked the bonnet 32 part of the rice transplanter 1 from the left side. For the sake of convenience, the inside of the bonnet 32 is illustrated in a state where a part of the surface is broken.

  As shown in FIGS. 7 (a) and 7 (b), a frame 220 is formed in a loop shape in the bonnet 32, and the controller 210 is accommodated at the upper and lower sides and fixed so as to be removable. By 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 seen from the left side of the driver's seat portion of the rice transplanter 1 as a center. Here, in accordance with the storage configuration of the controller 210 described with reference to FIGS. 7A and 7B, the battery 230 conventionally stored inside the bonnet 32 is stored behind the elevation step 240. It was composition.

  With this configuration, a storage space inside the bonnet 32 can be secured, and storage of the controller 210 becomes possible using the storage space. In the forward traveling of the traveling vehicle body 2, the anteroposterior intervals of the seedlings planted in the field by the seedling planting tool 52a are the inter-stock gear train of the inter-stock transmission mechanism 600 provided with a plurality of inter-stock gear trains (not shown). It is set as the structure changed by switching by operation of the between-stocks switching lever 601 provided in the lower side. By the switching operation of the inter-stock switching lever 601, it is possible to switch the number of planted plants of the seedlings per one tsubo to 37 strains, 42 strains, 47 strains ... 70 strains, 80 strains, 90 strains.

1 type riding type rice transplanter (seedling transplanter)
4 Planting device 60L, 60R Fertilizer hopper 61 Feeding part 62 Fertilization hose 63 Fertilization guide 66 Electric motor for blower 67 Blower 70 Blower sensor 71 Fertilizer delivery motor 72 Fertilizer outlet 73 Discharge shutter 73A, 74B Delivery roll 81 Electric fertilization shutter 100 Fertilizer

Claims (5)

The blower (67) blows air from the blower (67) to the feeding part (61) of the fertilizer hopper (60L, 60R) mounted on the traveling vehicle body (2) and passes the fertilization hose (62) to the fertilizer guide (63) of the planting device (4) A seedling transplanting machine (1) equipped with a fertilization device (100) for feeding
A blower sensor (70) for detecting the drive of the blower motor (66);
A seedling transplanting machine characterized by stopping a fertilizer delivery motor (71) for driving a delivery roll (73A, 74B) of the delivery section (61) by detecting a drive stop of the blower sensor (70). There is provided a controller (210) for storing the open / close positions of a plurality of fertilization shutters (81) provided in the feeding portion (61) of the fertilizer hopper (60L, 60R),
When the blower sensor (70) detects a stop, the blower electric motor (66) is stopped and the full fertilization shutter (81) is closed, and the blower electric motor (66) is opened when the blower electric motor (66) restarts The seedling transplanting machine according to claim 1, characterized in that (81) is opened. The delivery section (61) is provided with a fertilizer outlet (72) for discharging the fertilizer to the outside,
The seedling transplanting machine according to claim 1, wherein the blower electric motor (66) is driven when a discharge shutter (73) provided in the fertilizer discharge port (72) is opened. A fertilizer sensor (77) is provided in the fertilizer hopper (60L, 60R),
The seedling transplanting machine according to claim 1, wherein the manual stop of the blower electric motor (66) is disabled during the detection of the fertilizer by the fertilizer sensor (77). The seedling transplantation according to claim 1, characterized in that the fertilization shutter (81) provided between the fertilizer hopper (60L, 60R) and the feeding part (61) is opened when the blower electric motor (66) is activated. Machine.

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