JP6419007B2 - Paddy field machine - Google Patents

Description

  The present invention relates to a paddy field machine equipped with a supply device for supplying agricultural materials to a farm field.

  A conventional paddy field machine is described in Patent Document 1, for example. The paddy field machine is provided with a supply device for supplying agricultural materials to the field. The supply device includes a hopper that stores agricultural materials and a feeding mechanism that feeds the agricultural materials stored in the hopper. The feeding mechanism rotates based on a rotating body formed with a housing portion that can temporarily store the agricultural material stored in the hopper and then be released to the field side, and branching power branched from the traveling transmission system. A drive mechanism that rotationally drives the body, an adjustment mechanism that can adjust a set amount per field unit area for supplying agricultural materials, and an actuator that can operate the adjustment mechanism are provided.

  In the said paddy field machine, the amount of setting per field unit area which supplies agricultural material can be adjusted by operating an adjustment mechanism with an actuator. The rotating speed of the rotating body of the supply device is configured to be linked to the traveling speed of the traveling aircraft. When the traveling speed of the traveling aircraft increases, the rotating body is also driven to rotate at a high speed in conjunction with the traveling speed of the aircraft. The

JP 2014-187957 A

However, as in the conventional technique described above, in the supply device including a feeding mechanism that feeds agricultural materials stored in the hopper by the rotational drive of the rotating body in which the housing portion is formed, as the traveling speed of the traveling machine increases. When the rotational speed of the rotating body increases, the agricultural material tends to be difficult to be accommodated in the accommodating portion of the rotating body. This is thought to be because the storage part of the rotary body passes through the storage space for the agricultural material before the agricultural material sufficiently enters the storage part of the rotary body.
For this reason, depending on the traveling speed of the traveling machine body, the actual supply amount of the agricultural material by the supply device may be less than the predetermined supply amount per field unit area set in advance, and as a result, the agricultural material for the field There was a risk of variations in the supply amount.

  In view of such a point, it has been desired to provide a paddy field work machine that can uniformly supply agricultural materials to the field regardless of the traveling speed of the traveling machine body.

The paddy field working machine of the present invention is provided with a supply device for supplying agricultural materials to the field,
The supply device is provided with a hopper for storing agricultural material, and a feeding mechanism for feeding out the agricultural material stored in the hopper,
Based on the rotating body in which the feeding mechanism is formed with a housing part that can temporarily store the agricultural material stored in the hopper and then can be released to the field side, and the branching power branched from the traveling transmission system A drive mechanism that rotationally drives the rotating body, an adjustment mechanism that can adjust a set amount per field unit area for supplying agricultural materials, and an actuator that can operate the adjustment mechanism,
A vehicle speed sensor for detecting the traveling speed of the traveling aircraft,
A control unit for controlling the actuator, is provided, et al is,
A threshold speed related to the travel speed is set in the control unit,
The control unit controls the actuator so that the set amount becomes a preset value when the travel speed is less than the threshold speed, and the rotating body when the travel speed is equal to or greater than the threshold speed. The increase rate of the rotation speed is increased, and the actuator is controlled so that the set amount becomes larger than the set value .

According to the present invention, when the rotational speed of the rotating body of the supply device increases with an increase in the traveling speed of the traveling machine body, there is a tendency that agricultural materials are difficult to be accommodated in the accommodating portion of the rotating body. In anticipation, when the traveling speed of the traveling machine body increases, the set amount for supplying agricultural materials per field unit area is automatically increased and adjusted by operating the adjusting mechanism by the actuator.
Thereby, even when the traveling speed of the traveling machine body is high, the disadvantage that the agricultural material is difficult to be accommodated in the accommodating portion of the rotating body is that the set amount for supplying agricultural material per field unit area is increased. Agricultural materials having a predetermined supply amount per field unit area that is set in advance can be supplied to the field without being reduced and the supply amount of the agricultural material actually supplied to the field is reduced.
Therefore, according to the present invention, the agricultural material can be supplied uniformly to the field regardless of the traveling speed of the traveling machine body.

In addition, according to this configuration, when the traveling speed is a slow speed less than the threshold speed, the rotational speed of the rotating body is also slowed in conjunction with it, so that it is difficult for the agricultural material to be housed in the housing portion of the rotating body. This tendency does not occur very much. For this reason, when the traveling speed is less than the threshold speed, the actuator is controlled so that the set amount becomes a set value corresponding to the preset supply amount per field unit area set in advance. On the other hand, when the traveling speed is a speed that is somewhat higher than the threshold speed, the rotational speed of the rotating body is also linked to a high speed, so that it tends to be difficult for the agricultural material to be housed in the housing portion of the rotating body. Become. For this reason, when the traveling speed is equal to or higher than the threshold speed, the actuator is controlled so that the set amount is larger than the set value. As described above, when the traveling speed is less than the threshold speed, the set amount is constant at the set value, so that it is possible to reduce the driving frequency of the actuator, which is advantageous in terms of durability of the actuator. .

In the above configuration, a plurality of speed regions related to the travel speed are set in the control unit, and adjustment values related to the set amount are set for each speed region, and the adjustment value increases from the low speed side to the high speed side. Is set to a large value,
Preferably, the control unit is configured to control the actuator so that the set amount becomes the adjustment value corresponding to the speed region to which the traveling speed belongs.

  According to this configuration, the adjustment value related to the set amount is set for each speed region, and when the speed region to which the traveling speed of the traveling vehicle belongs is switched, the adjustment value is also switched to the one corresponding to the speed region. . In other words, since the actuator is driven when the traveling speed of the traveling aircraft exceeds the boundary between the speed regions, for example, compared to the case where the set amount increases in proportion to the traveling speed of the traveling aircraft. This makes it possible to reduce the driving frequency of the actuator, which is advantageous in terms of durability of the actuator.

  The said structure WHEREIN: It is suitable when the said adjustment mechanism is comprised so that adjustment of the rotational speed of the said rotary body is carried out by shifting the supply motive power supplied to the said rotary body from the said drive mechanism.

  According to this configuration, since the adjustment mechanism enables the rotation speed of the rotating body to be adjusted by shifting the supply power supplied from the driving mechanism to the rotating body, for example, other power is added to the driving mechanism. Compared to such other adjustment mechanisms, there is an advantage that the structure can be simplified because no power source for supplying other power is required.

In the above configuration, a plurality of the accommodating portions are provided on the outer peripheral portion of the rotating body along the circumferential direction of the rotating body,
The rotating body, the direction of the times Tenjikukokoro is, it is preferable that are arranged such that the flow-down direction and the direction substantially perpendicular to the agricultural materials in the hopper.

  According to this configuration, since the feeding mechanism is arranged so that the direction of the rotation axis of the rotating body is substantially perpendicular to the flow-down direction of the agricultural material in the hopper, for example, the direction of the rotation axis is There is an advantage that it is easy to reduce the arrangement space of the rotating body as compared with other feeding mechanisms provided with the rotating body in a direction along the flow-down direction of the agricultural material in the hopper.

In the above configuration, the rotating body includes a plurality of roll members arranged along the direction of the rotation axis,
The accommodating portion is provided for each of the roll members,
It is preferable that the roll members adjacent to each other have different phases for disposing the accommodating portions on the roll members.

  According to this configuration, the agricultural material is supplied to the field at different timings from the accommodating portions of the roll members adjacent to each other in the rotating body. Therefore, the phase which arrange | positions an accommodating part between mutually adjacent roll members is the same, compared with a feeding mechanism provided with the rotary body from which the agricultural material is supplied to a farm field at the same timing from the accommodating part of mutually adjacent roll members The supply interval of the agricultural material to the field is reduced, and the agricultural material can be supplied more uniformly to the field.

In the above configuration, a grooving device is provided that supplies agricultural material fed from the feeding mechanism to the groove while forming a groove in a farm field as the traveling machine body travels.
It is preferable that the groove producing device is covered with a fluorine-based resin.

  According to this configuration, since the groove-forming device is coated with water-repellent fluorine-based resin, it is possible to suppress adhesion of field mud, agricultural materials, and the like to the groove-making device. Thereby, the agricultural material is smoothly supplied from the grooving device to the groove, and the supply unevenness of the agricultural material is less likely to occur.

It is a whole side view showing a riding type rice transplanter. It is a whole top view showing a riding type rice transplanter. It is a front view which shows the periphery of a fertilizer application. It is sectional drawing of the side view which shows the periphery of a feeding roll. It is a side view which shows the circumference | surroundings of the balance-type drive mechanism and adjustment mechanism in a state with few delivery amounts. It is a side view which shows the circumference | surroundings of the balance type drive mechanism and adjustment mechanism in a state with much feeding amount. It is a control block diagram. It is the schematic which shows the relationship between the travel speed of a traveling body, and setting amount. It is a figure which shows the flow of the conveyance wind at the time of fertilization. It is a figure which shows the flow of the conveyance wind at the time of fertilizer discharge | emission. It is a flowchart which shows the flow of control regarding a blower apparatus. It is a rear view which shows the periphery of the hanger member of a retracted state. It is a rear view which shows the periphery of the hanger member of use condition. It is a flowchart which shows the flow of control regarding a buzzer. It is a side view which shows the periphery of the seat member in the retracted state. It is a front view which shows the periphery of the seat member in use condition. It is a side view which shows the periphery of a groove producing device. It is sectional drawing of the front view which shows the periphery of the shielding cover of a residual amount sensor. It is a front view which shows the attachment aspect of a load cell. It is sectional drawing of the front view which shows the periphery of a drive mechanism in a transmission clutch in an engagement state. It is sectional drawing of the front view which shows the periphery of a drive mechanism in a state with a transmission clutch cut | disconnected.

Embodiments that are examples of the present invention will be described below.
As shown in FIGS. 1 and 2, a riding type rice transplanter (an example of a “paddy field machine”) includes a self-propelled traveling machine body 10. The traveling machine body 10 includes a pair of left and right front wheels 11, a pair of left and right rear wheels 12 positioned behind the front wheels 11, and a machine body frame 13 supported by the front wheels 11 and the rear wheels 12. An engine 14 is supported on the body frame 13. The traveling machine body 10 includes a driving unit 15 for performing various maneuvering operations, a seedling planting device 16 for planting seedlings in the field, and a fertilizer device 17 for supplying powdered fertilizer (an example of “agricultural material”) to the field. (An example of a “supplying device”) is provided with a spare seedling stand 18 or the like on which a replenishing seedling can be placed.

  A driving unit 15 is disposed on the front side of the traveling machine body 10. A seedling planting device 16 is disposed on the rear side of the traveling machine body 10. A fertilizer application device 17 is disposed between the driving unit 15 and the seedling planting device 16 in the traveling machine body 10.

  The driving unit 15 includes a driving step 21 as a scaffold for the worker, a driving seat 22 on which the worker is seated, a steering wheel 23 for performing a steering operation, and a main switch 24 for inputting a drive stop of the engine 14 (see FIG. 7). ), Various operation input means such as the main transmission lever 25 and the like. The driving step 21 includes a main step 26 located in the vicinity of an operator seated on the driving seat 22, an expansion step 27 connected to both the left and right sides of the main step 26, and a rear part connected to the rear part of the main step 26. Step 28 is provided.

  As shown in FIGS. 1 and 2, the seedling planting device 16 is connected to the body frame 13 through a four-link mechanism 30 driven by a hydraulic cylinder 29 so as to be movable up and down. The seedling planting device 16 includes a seedling stage 32 for placing seedlings for planting, a grounding float 33 for grounding to the field, a plurality of seedling planting mechanisms 34 for taking seedlings from the seedling stage 32 and planting them on the field. Is provided. Each seedling planting mechanism 34 includes a transmission case 34a, a pair of rotation cases 34b supported rotatably at the rear of the transmission case 34a, and a pair of planting arms 34c provided at both ends of the rotation case 34b. Is provided. In the present embodiment, four pairs of right and left seedling planting mechanisms 34 are provided, and the riding type rice transplanter is configured in an eight-row planting specification.

  As shown in FIGS. 1 to 4, 12, 13, 18, 20, and 21, the fertilizer application device 17 delivers a plurality of hoppers 37 that store fertilizers, and fertilizers stored in the hoppers 37. A feeding mechanism 38 for each hopper 37, a grooving device 39 that feeds the fertilizer fed from the feeding mechanism 38 to the groove while forming a groove in the field as the traveling machine body 10 travels, and a fertilizer fed from the feeding mechanism 38. A fertilizer hose 40 to be sent to the groove 39 and a blower device 41 for sending warm air to the fertilizer fed from the feeding mechanism 38 are provided. The hopper 37 is supported by a fertilizer frame 42 supported by the machine body frame 13.

  The power of the engine 14 is transmitted to a traveling hydrostatic continuously variable transmission (not shown) provided in the transmission case 20, and the power output from the hydrostatic continuously variable transmission is transmitted for traveling. It is configured to be branched into the power of the system and the power of the transmission system for planting. The power of the transmission system for planting is transmitted to the seedling planting device 16 via the transmission shaft 31 and the PTO shaft 31a from the inter-strain transmission (not shown) and the planting clutch 43 (see FIG. 7). Thereby, as the seedling stage 32 is driven to reciprocate laterally to the left and right, the rotary case 34b is driven to rotate, and the planting arms 34c alternately take out seedlings from the lower part of the seedling stage 32 and put them on the surface. Planted. Moreover, it is possible to turn on and off the entire power transmitted to the seedling planting device 16 by turning the planting clutch 43 on and off. On the other hand, the power of the traveling transmission system is configured to be transmitted to the rear wheels 12. Further, the branching power branched from the traveling transmission system is configured to be transmitted to the fertilizer application device 17. That is, the fertilizer application device 17 is driven in conjunction with the rear wheel 12 and is driven in conjunction with the traveling speed of the traveling machine body 10.

  The riding type rice transplanter having such a basic structure travels the traveling machine body 10 and places the seedlings planted in the field by the fertilizer application device 17 while planting seedlings in the field by the seedling planting device 16. It is possible to perform side strip fertilizer supplying fertilizer.

[Specific structure of fertilizer application]
As shown in FIGS. 4 to 6 and 18, the feeding mechanism 38 of the fertilizer application apparatus 17 includes a feeding roll 44 (an example of a “rotating body”) and a balance-type driving mechanism 45 (an example of a “driving mechanism”). And an adjustment mechanism 46 capable of shifting the power transmitted to the feeding roll 44 and a metering motor 47 (an example of an “actuator”) including an electric motor.

  As shown in FIGS. 4, 18, 20, and 21, the feeding roll 44 includes an upper feeding case 48 coupled to the lower portion of the hopper 37 and a lower feeding case 49 coupled to the lower portion of the upper feeding case 48. Is placed inside. The feeding roll 44 is arranged so that the direction of the rotation axis Y is in a direction substantially perpendicular to the flow direction of the fertilizer in the hopper 37. The feeding roll 44 is provided with a plurality of (two in this embodiment) roll members 50 arranged along the direction of the rotation axis Y for each fertilization hose 40. The plurality of roll members 50 in the feeding roll 44 are configured to be integrally rotated. The roll member 50 of the feed roll 44 is formed with a storage portion 51 that is a groove-like recess that can temporarily store the fertilizer stored in the hopper 37 and then release the fertilizer to the field side. A plurality of accommodating portions 51 are provided on the outer peripheral portion of the feeding roll 44 along the circumferential direction of the feeding roll 44.

  In the feeding mechanism 38, the fertilizer in the hopper 37 is accommodated in the accommodating portion 51 of the feeding roll 44, and when the feeding roll 44 is driven to rotate, the tip of the brush 52 that comes into contact with the outer peripheral portion of the feeding roll 44 causes an extra portion. While the fertilizer is worn out, the fertilizer accommodated in the accommodating portion 51 is fed out.

[About staggered roll members]
As shown in FIGS. 18, 20, and 21, in the feeding roll 44, the phase in which the accommodating portion 51 is disposed on the roll member 50 is different between the adjacent roll members 50. Thereby, for example, it becomes possible to narrow the supply interval of the fertilizer with respect to the field compared with what has the same phase which arranges storage part 51 in roll member 50 between mutually adjacent roll members 50, Fertilizer is uniformly supplied to the field.

[Balance type drive mechanism]
The balance-type drive mechanism 45 shown in FIGS. 5 and 6 is configured to rotationally drive the feeding roll 44 based on the branching power branched from the traveling transmission system. Specifically, the branching power branched from the transmission system of the traveling system is transmitted to the balance type drive mechanism 45 as the reciprocating rotational motion of the input side transmission shaft 53.

  As shown in FIGS. 5 and 6, one end of the input side first arm 54 is fixed to the input side transmission shaft 53 to which the branching power branched from the transmission system of the traveling system is input. One end of the input side connecting rod 55 is rotatably connected to the other end of the input side first arm 54. The other end portion of the input side connecting rod 55 is rotatably connected to one end portion of the input side second arm 56. The other end of the input side second arm 56 is rotatably connected to a laterally fixed support shaft 57 in a fixed position. The other end portion of the input side connecting rod 55 is also rotatably connected to one end portion of the balance arm 58. The other end portion of the balance arm 58 is rotatably connected to one end portion of the output side connecting rod 59. One end of the output side arm 60 is rotatably connected to the other end of the output side connecting rod 59. The other end of the output side arm 60 is connected to the output side transmission shaft 62 via a one-way clutch 61. A feeding roll 44 is connected to the output side transmission shaft 62. Due to the action of the one-way clutch 61, only one of the forward rotation and the backward rotation of the output side arm 60 is taken out and converted into one-way rotation of the output side transmission shaft 62. A long hole 63 for adjustment is formed in the balance arm 58. A fulcrum pin 65 fixed to the movable support member 64 is inserted into the long hole 63. The balance arm 58 can swing around the fulcrum pin 65. With such a structure, the reciprocating rotational motion of the input side transmission shaft 53 to which the branching power branched from the transmission system of the traveling system is input outputs the power toward the feeding roll 44 of each feeding mechanism 38. 62 is converted into rotation in one direction.

[Regulation mechanism]
The adjusting mechanism 46 shown in FIGS. 5 and 6 is configured to be able to adjust the rotation speed of the feeding roll 44 by shifting the supply power supplied to the feeding roll 44 from the balance-type drive mechanism 45. Specifically, the adjustment mechanism 46 moves the position of the fulcrum pin 65 that becomes the swing fulcrum of the balance arm 58 by moving the movable support member 64, and the output transmission shaft 62 relative to the input transmission shaft 53. The input / output ratio can be changed.

  In other words, by rotating the screw shaft portion 66, the boss portion 67 of the movable support member 64 that fixes the fulcrum pin 65 moves in the axial direction of the screw shaft portion 66. . The screw shaft portion 66 is connected to the metering motor 47 through a gear mechanism. The screw shaft portion 66 can be rotated by driving a metering motor 47. That is, the metering motor 47 is configured to be able to operate the adjustment mechanism 46.

  Further, a position sensor 68 composed of a potentiometer capable of detecting the position of the movable support member 64 is provided. That is, the position sensor 68 detects the set amount per field unit area for supplying fertilizer.

  Depending on the position of the fulcrum pin 65, the set amount per field unit area for supplying fertilizer is determined. That is, the adjustment mechanism 46 that can adjust the fulcrum pin 65 is configured to be able to adjust the set amount per unit area of the field for supplying the fertilizer. In other words, the movement of the position of the fulcrum pin 65 based on the driving of the metering motor 47 causes the other end portion of the balance arm 58 to reciprocate on the input side transmission shaft 53 side within a predetermined predetermined angle A1. The predetermined rotation angle A2, which is the range of reciprocating rotation, can be reduced (see FIG. 5) or increased (see FIG. 6). As the predetermined rotation angle A2 decreases, the set amount per field unit area for supplying fertilizer decreases. Conversely, as the predetermined rotation angle A2 increases, the set amount per field unit area for supplying fertilizer increases. .

[Preventing sliding of cam holder]
The branching power branched from the traveling transmission system is transmitted to the input transmission shaft 53. As shown in FIGS. 19 to 21, the output-side transmission shaft 62 connected to the input-side transmission shaft 53 via the balance-type drive mechanism 45 has a transmission clutch for each feeding mechanism 38 (every two strips). 70 is arranged. With each transmission clutch 70 being turned on and off, it is possible to turn on and off the power for each feeding mechanism 38 (every two strips). Each transmission clutch 70 is urged toward the engaged state by a spring member 71. A rotation operation shaft 72 is arranged in parallel with the input side transmission shaft 53. Cam members 73 capable of operating the transmission clutch 70 are disposed on the rotation operation shaft 72 at locations corresponding to the respective transmission clutches 70. The cam member 73 is integrated with a cam holder 74 that is detachably attached to the rotation operation shaft 72 with a bolt or the like. The cam members 73 are arranged with different phases. As a result, the rotation operation shaft 72 is rotated so that each transmission clutch 70 can be individually turned on and off.

  As shown in FIG. 21, when the cam member 73 is rotated along with the rotation of the rotation operation shaft 72, the cam member 73 presses the corresponding transmission clutch 70, and the urging force of the spring member 71 is applied. On the contrary, the transmission clutch 70 is moved to the disengaged position.

  As shown in FIGS. 20 and 21, a slide prevention tool 75 is fixed to the rotation operation shaft 72 on the opposite side of the spring member 71 with respect to the cam holder 74 by a bolt or the like in close contact with the cam holder 74. . Since such a slide preventing device 75 is provided, the cam member 74 is prevented from being displaced with respect to the rotation operation shaft 72 due to the reaction force of the spring member 71 when the cam member 73 presses the transmission clutch 70. Thus, the position of the cam member 73 with respect to the transmission clutch 70 is kept constant.

[About remaining amount sensor of fertilizer application]
As shown in FIGS. 4, 7, and 18, an optical remaining amount sensor 76 is provided on the inner surface of the hopper 37 of the fertilizer application device 17. A remaining amount sensor 76 is provided for each hopper 37. The remaining amount sensor 76 includes a light projecting unit 77 that emits detection light and a light receiving unit 78 that can receive the detection light from the light projecting unit 77. When the fertilizer stored in the hopper 37 blocks the optical path and the light receiving unit 78 does not detect the detection light, it indicates that a sufficient amount of fertilizer is stored in the hopper 37. When the light receiving unit 78 detects the detection light, it indicates that the fertilizer in the hopper 37 is empty.

  A light shielding cover 79 for shielding sunlight reaching the remaining amount sensor 76 is provided around the remaining amount sensor 76. In the light shielding cover 79, the upstream end and the downstream end of the hopper 37 in the flow direction of the fertilizer are open portions 80 through which the fertilizer can pass. Since the fertilizer flows smoothly in the light shielding cover 79 through the opening portion 80, it is difficult for the fertilizer to be clogged around the remaining amount sensor 76. Thus, since the remaining amount sensor 76 is provided with the light shielding cover 79, it is possible to avoid the possibility of erroneous detection in the remaining amount sensor 76 due to the influence of sunlight or the like.

[About load cell]
As shown in FIGS. 7 and 18, a plurality (two in this embodiment) of load cells 81 capable of detecting the weight are interposed between the body frame 13 and the legs of the fertilization frame 42. . The weight value output from the load cell 81 changes according to the weight of the fertilizer stored in the hopper 37 of the fertilizer application device 17.

[Blower device]
As shown in FIGS. 1 and 2, the blower device 41 is disposed below the driver seat 22. As shown in FIGS. 9 and 10, the blower device 41 has a structure in which a blower motor 82 is connected to a fan case 83. The blower motor 82 drives the fan 84 built in the fan case 83, so that the conveying air is supplied from the fan case 83 toward the air duct 85.

  As shown in FIG. 2, the blower device 41 is provided with an introduction duct 87 for introducing outside air. An intake port 88 of the introduction duct 87 is disposed behind the muffler 89 in the vicinity of the engine 14. Air heated by the engine 14 or air heated by the muffler 89 is sucked from the intake port 88. Thereby, it is possible to raise the temperature of conveyance air, and it can accelerate | stimulate drying of a fertilizer with conveyance air.

  As shown in FIGS. 9 and 10, the air duct 85 is provided with a right duct 90 and a left duct 91. The right duct 90 and the left duct 91 are connected to the fan case 83 via a branch duct 92. Between the right duct 90 and the fan case 83, there is provided a branch shutter 104 capable of switching between permitting and blocking of the inflow of the conveying air. The right duct 90 and the left duct 91 are connected to the air duct 93 of the lower feeding case 49 of each feeding mechanism 38. Between the air duct 93 and the fertilizer hose 40, an air guide shutter 107 capable of switching between permitting and blocking of the inflow of the conveying air is provided.

  As shown in FIGS. 12 and 13, the discharge duct 94 used at the time of fertilizer recovery is disposed on the rear side of the feeding mechanism 38. As shown in FIGS. 9 and 10, the discharge duct 94 is connected to the discharge port 95 of the upper supply case 48 of each supply mechanism 38. Each discharge port 95 is provided with a discharge shutter 106 capable of switching between permitting and blocking of the inflow of the conveying air. A discharge portion 96 for discharging the fertilizer is provided at the right end of the discharge duct 94. The fertilizer discharged from the discharge unit 96 can be collected in the fertilizer collection bag B. The left end portion of the air duct 85 and the left end portion of the discharge duct 94 are connected by a U-shaped connecting duct 97 in plan view. The connecting duct 97 is provided with a switching shutter 98 that can switch between allowing and shutting off the inflow of the conveying air.

  The discharge unit 96 sets the discharge direction of the fertilizer downward by bending the right end of the discharge duct 94 downward. A hanger member 99 having a posture parallel to the discharge duct 94 is provided at a position in the vicinity of the discharge unit 96 so as to be freely retractable in the lateral direction of the machine body.

[About hanger members]
As shown in FIGS. 12 and 13, a hanger member 99 capable of suspending and holding a fertilizer collection bag B as a collection container is provided in the vicinity of the fertilizer application device 17. The hanger member 99 is formed in a rod shape and is disposed along the lateral direction of the body.
The hanger member 99 is configured to be movable in and out in the lateral direction of the machine body. The hanger member 99 protrudes in the lateral direction of the machine body and can be used to hold the fertilizer collection bag B (U1) (see FIG. 13), and the retracted state U2 (see FIG. 12) does not protrude in the lateral direction of the machine body. , Can be switched to.

  A plurality of stays 101 are fixedly provided so as to protrude rearward from the support frame portion 100 of the fertilizer application frame 42 that supports the feeding mechanism 38. The hanger member 99 is inserted through a through hole formed in each stay 101. On the front end side of the hanger member 99, a dropout prevention body 102 for preventing the fertilizer collection bag B from dropping off is provided. At an intermediate position of the hanger member 99, a restriction pin 103 that functions as a stopper is projected.

  The hanger member 99 is used to suspend the fertilizer collection bag B when the fertilizer discharged from the discharge unit 96 is collected in the fertilizer collection bag B. The hanger member 99 is configured to be switchable between a use state U1 (see FIG. 13) and a storage state U2 (see FIG. 12). Each position of the regulation pin 103 is determined by contacting the stay 101 in the use state U1 and the storage state U2.

  As shown in FIGS. 12 and 13, as the dropout prevention body 102, a spring material is used in which the protruding end is bent like a bowl and the two legs on the base end side are supported by the hanger member 99. . Due to the urging force of the drop-off prevention body 102, it is configured to be held in either one of the locking posture and the standing posture. In the retracted state U2, the hooked portion 99 is held by engaging the hook-shaped portion at the tip of the drop preventing body 102 with the stay 101, and the hanger member 99 is brought into the upright posture in the used state U1. The fall of the fertilizer collection bag B supported by is prevented.

[About switch lever]
As shown in FIGS. 9 and 10, a switching lever 105 that can be operated between a work position and a collection position is provided at a position protruding toward the front side of the feeding mechanism 38 (the front side of the traveling machine body 10). Yes. The switching lever 105 functions as a switching operation tool that operates the branch shutter 104, the four discharge shutters 106, the eight wind guide shutters 107, and the switching shutter 98 in cooperation with each other.

  The switching lever 105 is provided at the right end of the switching shaft 108 extending along the left-right direction of the machine body. The switching lever 105 is located in the vicinity of the discharge unit 96. The switching lever 105 is configured to be switchable between a “working position” (see FIG. 9) and a “collection position” (see FIG. 10).

  When performing the rice transplanting operation, as shown in FIG. 9, by keeping the switching lever 105 at the “working position”, the branch shutter 104 is opened, the discharge shutter 106 is closed, and the wind guide shutter is closed. 107 is opened, and the switching shutter 98 is closed. Thereby, the conveying air from the blower device 41 is sent to the right duct 90 and the left duct 91, but is not sent to the discharge duct 94 by the switching shutter 98. The conveying air is sent from the air duct 85 to the lower part of the feeding mechanism 38, and the supply of the fertilizer fed from the feeding mechanism 38 to the field scene is realized.

  When the rice transplanting operation is completed and the fertilizer is collected, as shown in FIG. 10, the switching lever 105 is maintained at the “collection position”, the branch shutter 104 is closed, and the discharge shutter 106 is opened. Then, the air guide shutter 107 is closed and the switching shutter 98 is opened. The conveying air from the blower device 41 is sent to the discharge duct 94 through the left duct 91 and the connecting duct 97. The discharge shutter 106 is opened, and the fertilizer is discharged from the supply mechanism 38 to the discharge duct 94 by the flow of air passing between the supply roll 44 and the brush 52 and the weight of the fertilizer itself. As a result, the fertilizer discharged to the discharge duct 94 is carried to the discharge unit 96 by the conveying wind, and the fertilizer can be collected.

[Coating of groovers with fluororesin]
As shown in FIGS. 1 and 17, the groove generator 39 is made of stainless steel. The entire surface of the groove producing device 39 is covered with a fluororesin. Thereby, for example, it becomes difficult for fertilizer, mud and the like to adhere to the inner surface of the groove producing device 39, and it is possible to suppress the occurrence of clogging of the fertilizer in the groove producing device 39.

[About guard members]
As shown in FIGS. 1 to 3, 15, and 16, a guard member 110 is provided in front of the hopper 37 of the fertilizer application device 17. The guard member 110 is located above the rear step 28 of the operation step 21. The guard member 110 is formed by bending a pipe. The guard member 110 is supported across the left and right handrail members 111. The handrail members 111 are each formed by bending a pipe, and are supported by the body frame 13 below the expansion step 27 of the operation step 21. The handrail member 111 is erected on the lateral side portion of the hopper 37 of the fertilizer application 17.

  The guard member 110 is fixed to the left and right handrail members 111 via brackets 112. The guard member 110 is capable of adjusting the position of the attachment location with respect to the bracket 112 in the vertical direction. A central part 110a of the guard member 110 located on the left and right central part side of the body is curved downward. This prevents the guard member 110 from interfering with the driver seat 22.

  As shown in FIGS. 1 and 3, the upper end portion of the guard member 110 is set to be substantially the same height as the upper end portion of the hopper 37. The guard member 110 can be used for maintaining the posture of the worker by depositing the knee of the worker on the driving step 21 in the guard member 110. For this reason, it is easy to supply fertilizer to the hopper 37.

  In addition, the guard member 110 can change the height position with respect to the handrail member 111. As a result, the upper end portion of the guard member 110 can be positioned at a position somewhat higher than the upper end portion of the hopper 37. In this case, the guard member 110 can be used as a handrail by the worker on the operation step 21. For this reason, the guard member 110 can be easily used by maintaining the posture of the operator.

[About seat members]
As shown in FIGS. 2, 15, and 16, the handrail member 111 supports a plate-like seat member 113. The seat member 113 can swing around the longitudinal axis Z along the longitudinal direction of the machine body. The seat member 113 is freely changeable between a storage posture P1 (see FIG. 15) and a use posture P2 (see FIG. 16). As shown in FIG. 15, when the seat member 113 is placed in the storage posture P1, the seat surface of the seat member 113 is turned sideways. For this reason, the amount of protrusion of the seating member 113 toward the inward side of the body above the operation step 21 is suppressed, and the seating member 113 does not interfere with the operator who moves the operation step 21.

  As shown in FIG. 16, when the seat member 113 is set to the use posture P2, the seat surface of the seat member 113 faces upward. The lower surface of the seating member 113 in the use posture P <b> 2 is supported from below by a refractive link type support mechanism 114 whose one end is fixed to the handrail member 111. When the seating member 113 is set to the use posture P <b> 2, an operator positioned above the driving step 21 can sit on the seating surface of the seating member 113. If the worker grasps the handrail member 111, the posture of the worker can be easily maintained.

  The traveling machine body 10 is provided with a buzzer 115 (see FIG. 7) for various notifications to the worker.

  Further, a wheel rotation sensor 19 (an example of a “vehicle speed sensor”) that detects the rotation of the rear wheel 12 in order to detect the traveling speed of the traveling machine body 10 is provided in the vicinity of the rear wheel 12 (see FIG. 7). Yes.

  Moreover, the upper limit sensor 35 (refer FIG. 7) which can detect that the seedling planting apparatus 16 exists in an upper limit position is provided. When the seedling planting device 16 is in the upper limit position, the upper limit sensor 35 is turned on, and when the seedling planting device 16 is in a position other than the upper limit position, the upper limit sensor 35 is turned off.

  Further, the fertilizer application device 17 is provided with an all-strip stop switch 69 (see FIG. 7). When the full-line stop switch 69 is turned on, the rotation operation shaft 72 and the cam member 73 are operated, and all the transmission clutches 70 are in the disengaged position (see FIGS. 19 to 21). The feeding of the fertilizer by the feeding mechanism 38 is stopped.

  Moreover, the hanger sensor 117 (refer FIG. 7) which can detect that the hanger member 99 exists in use condition U1 is provided. The hanger member 99 is configured by, for example, a limit switch.

  Further, a discharge switch 109 (see FIG. 7) capable of detecting that the switching lever 105 is in the “collection position” is provided. The discharge switch 109 is configured to be in an on state during the change operation of the switching lever 105 from the “work position” to the “collection position”.

[About control configuration]
As shown in FIG. 7, the traveling machine body 10 is provided with a control device 118 including an ECU that performs various controls. The control device 118 is configured by an ECU. The control device 118 includes a communication control unit 119, a metering control unit 120 (corresponding to a “control unit”), a blower control unit 122, a notification control unit 123, and a weight calculation unit 124. .

  The control device 118 includes a wireless communication device 125, a wheel rotation sensor 19, a position sensor 68, a main switch 24, an engine rotation sensor 127 that detects the rotation of the engine 14, an all-row stop switch 69, an upper limit sensor 35, a discharge switch 109, Information is input from the hanger sensor 117, the plurality of remaining amount sensors 76, and the load cell 81. The control device 118 is configured to control the metering motor 47, the cell motor of the engine 14, the blower motor 82, the buzzer 115, and the planting clutch 43. The wireless communication device 125 is configured by, for example, a WiFi unit. The wireless communication device 125 is configured to be capable of transmitting and receiving information to and from the portable information terminal 126 having a communication function such as a smartphone.

  The communication control unit 119 is configured to be able to transmit and receive various types of information with the wireless communication device 125. The wireless communication device 125 is configured to transmit and receive various types of information to and from the portable information terminal 126. The portable information terminal 126 can transmit and receive various types of information to and from an external computer via a communication network.

[Regulation control of set amount per field unit area]
By using the portable information terminal 126 or the like, it is possible to set a planned supply amount per unit field area. The planned supply amount per field unit area set in the portable information terminal 126 is input to the metering control unit 120 of the control device 118 via the wireless communication device 125.

  The metering control unit 120 is based on the detection information of the wheel rotation sensor 19 (traveling speed of the traveling machine body 10) and the detection information of the position sensor 68 (current value of the set amount per field unit area). It is configured to perform control. By driving the metering motor 47, the position of the fulcrum pin 65 (see FIGS. 5 and 6) is moved.

  When the planned supply amount of fertilizer to be supplied per field unit area set in the portable information terminal 126 is input, the metering control unit 120 sets the planned supply amount of fertilizer to be supplied per field unit area. Are set in advance. Then, the metering control unit 120 controls the metering motor 47 so that the fulcrum pin 65 moves to a position corresponding to the set value, thereby initial adjustment of the set amount per field unit area.

  The metering control unit 120 controls the metering motor 47 so as to increase the set amount per field unit area for supplying fertilizer when the traveling speed of the traveling machine body 10 increases.

  As shown in FIG. 8, a threshold speed T related to the traveling speed of the traveling machine body 10 is set in the metering control unit 120. As the threshold speed T, the traveling speed of the traveling machine body 10 corresponding to the rotational speed of the feeding roll 44 that starts to make it difficult for the fertilizer to be housed in the housing portion 51 is set. In the metering control unit 120, a plurality of speed regions R related to the traveling speed of the traveling machine body 10 are set. And the adjustment value regarding the set amount of the fertilizer supplied per field unit area is set for every speed area | region R, respectively.

  The adjustment value is a correction ratio that is multiplied by the set value. The metering control unit 120 controls the metering motor 47 so that a value obtained by multiplying the set value by the adjustment value becomes a set amount per field unit area for supplying fertilizer.

  In the speed region R where the traveling speed of the traveling machine body 10 is less than the threshold speed T, the adjustment value is set to “1”. In other words, when the traveling speed of the traveling machine body 10 is less than the threshold speed T, the metering control unit 120 keeps the set amount per field unit area for supplying the fertilizer as the preset set value. The increase adjustment of the rotation speed of the roll 44 is not performed.

  Further, the metering control unit 120 adjusts the metering motor 47 so that the set amount per field unit area for supplying the fertilizer becomes larger than the set value when the traveling speed of the traveling machine body 10 is equal to or higher than the threshold speed T. Is configured to control. As the adjustment value, a larger value is set as the speed region R is from the low speed side to the high speed side. For example, in the speed region R that is equal to or higher than the threshold speed T, the adjustment value gradually increases in steps as the speed region R becomes higher, such as “1.05” and “1.1”. Is set. That is, as the traveling speed of the traveling machine body 10 increases and the adjustment value increases, the rate of increase in the rotational speed of the feeding roll 44 increases.

  As described above, the metering motor 47 is controlled in accordance with the change in the traveling speed of the traveling machine body 10, whereby the fulcrum pin 65 shown in FIGS. 5 and 6 is moved to the increase side or the decrease side, and the feeding roll 44. The rotation speed is increased or decreased. For this reason, even if there is a tendency that the traveling speed of the traveling machine body 10 is high, the rotational speed of the feeding roll 44 linked to the traveling speed is high, and the fertilizer is not sufficiently stored in the storage portion 51 of the feeding roll 44. The amount of fertilizer fed out is increased by the increase in the rotation speed of the roll 44.

  Therefore, the amount of fertilizer supplied per field unit area by the fertilizer application device 17 does not decrease depending on the traveling speed of the traveling machine body 10, and the predetermined supply amount per field unit area is set with respect to the field by the fertilizer application device 17. Fertilizer can be supplied.

  The metering motor 47 can be manually adjusted to the increase side and the decrease side by operating a neutrally biased manual operation unit 128 disposed in the vicinity of the metering motor 47.

[Control of blower device]
As shown in FIG. 11, the blower control unit 122 performs the following control.
In step # A1, it is determined whether or not the main switch 24 is in the operating position. If it is in the operating position, the process proceeds to step # A2. On the other hand, if the main switch 24 is not in the operating position in step # A1, the process proceeds to step # A7 and the blower motor 82 is stopped.
In step # A2, it is determined whether or not the engine 14 is rotating based on the input information from the engine rotation sensor 127. If the engine 14 is rotating, the process proceeds to step # A2. On the other hand, if the engine 14 is not rotating in step # A2, the process proceeds to step # A7 and the blower motor 82 is stopped.
In step # A3, it is determined whether or not all the strip stop switch 69 is in the off state, that is, whether or not the feeding of the fertilizer by all the feeding mechanisms 38 is stopped, and the all strip stop switch 69 is in the off state. In some cases, that is, when fertilizer is being fed by any of the feeding mechanisms 38, the process proceeds to step # A4. On the other hand, in step # A3, when all the strip stop switch 69 is not in the OFF state, that is, when all the strip stop switch 69 is in the ON state and the feeding of the fertilizer by all the feeding mechanisms 38 is stopped, the step The process proceeds to # A7 and the blower motor 82 is stopped.
In step # A4, it is determined whether or not the upper limit sensor 35 is in the off state and the seedling planting device 16 is in a position other than the upper limit position. In step # A6, the blower motor 82 is driven. On the other hand, if the seedling planting device 16 is not located at a location other than the upper limit position in step # A4 (when the seedling planting device 16 is located at the location of the upper limit position), the process proceeds to step # A5.
In step # A5, it is determined whether or not the discharge switch 109 is in the on state. If the discharge switch 109 is in the on state, the process proceeds to step # A6 and the blower motor 82 is driven. In addition, in step # A6, the planting clutch 43 is prohibited from being engaged, and power transmission to the seedling planting device 16 is prevented. On the other hand, if the discharge switch 109 is not in the on state in step # A5, the process proceeds to step # A7 and the blower motor 82 is stopped.

  That is, the blower device 41 is configured such that the blower motor 82 is driven and the conveying air is generated only when the engine 14 is driven. Thereby, for example, it is possible to prevent the blower device 41 from being driven in a situation where the engine 14 is stopped and the battery is not charged. Thereby, the battery can be prevented from rising.

  Further, even when the seedling planting device 16 is located at the upper limit position, when the predetermined condition is satisfied, the blower motor 82 can be driven by setting the switching lever 105 to the “discharge position”. For this reason, when discharging residual fertilizer from the hopper 37 of the fertilizer application apparatus 17, the effort which descends the seedling planting apparatus 16 from an upper limit position can be made unnecessary.

[Warning warning notification when the hanger member is in use]
As shown in FIG. 14, the notification control unit 123 performs the following control.
In step # B1, it is determined based on the detection by the hanger sensor 117 whether or not the hanger member 99 is in the use state U1, and when the hanger member 99 is in the use state U1, the process proceeds to step # B2. On the other hand, in step # B1, when the hanger member 99 is not in the use state U1 (the hanger member 99 is in the stored state U2), the process proceeds to step # B4 and the buzzer 115 is stopped.
In step # B2, it is determined based on the detection by the wheel rotation sensor 19 whether or not the traveling machine body 10 is traveling. If the traveling machine body 10 is traveling, the process proceeds to step # B3 and the buzzer 115 is moved. Is sounded continuously. On the other hand, when the traveling machine body 10 is not traveling in step # B2, the process proceeds to step # B3 and the buzzer 115 is stopped.

  That is, when the traveling machine body 10 travels while the hanger member 99 is in the usage state U1 protruding sideways, the buzzer 115 emits a continuous sound and alerts the operator. The Thereby, the possibility that the hanger member 99 hits an obstacle or the like and is damaged can be reduced. In addition, when the traveling machine body 10 travels when the hanger member 99 is in the usage state U1 projecting laterally from the body, the raising and lowering of the seedling planting device 16 is also prohibited.

[Notice of running out of fertilizer]
When the detection signal of the detection light is input from the remaining amount sensor 76 in the hopper 37 shown in FIGS. 4 and 18, the notification control unit 123 of the control device 118 causes the buzzer 115 to generate an intermittent sound. As a result, the operator is notified that the fertilizer has run out in the hopper 37. Note that the notification of the continuous sound of the buzzer 115 related to the hanger member 99 is given priority over the notification of the intermittent sound of the buzzer 115 that is out of fertilizer.

[Detection of weight in fertilizer application]
The weight calculation unit 124 is configured to calculate the actual weight of the fertilizer stored in the hopper 37 based on the weight value output from the load cell 81 shown in FIG.
The actual weight of the fertilizer is calculated from the input weight value according to parameters set in advance in the weight calculation unit 124. The calculated actual weight data can be transmitted to the portable information terminal 126 via the wireless communication device 125 by the communication control unit 119 of the control device 118. Thereby, the weight of the fertilizer in the fertilizer application device 17 can be managed in the portable information terminal 126 or an external computer.

[Another embodiment]
Hereinafter, another embodiment in which the above embodiment is modified will be described. Each of the following embodiments is the same as the above embodiment except for the matters described. The above embodiment and each of the following embodiments can be appropriately combined as long as no contradiction occurs. The scope of the present invention is not limited to the above-described embodiment and each of the following embodiments.

(1) In the above embodiment, the threshold speed T related to the traveling speed is set as an example. However, the present invention is not limited to this. For example, such a threshold speed T may not be set.

(2) In the above embodiment, a plurality of speed regions R related to the traveling speed are set, adjustment values related to the set amount are set for each speed region R, and the adjustment value increases as the speed region R increases from the low speed side to the high speed side. However, the present invention is not limited to this. For example, the speed region R may not be set for the travel speed, and the adjustment value related to the set amount may be set to increase in proportion to the travel speed.

(3) In the above-described embodiment, the “adjustment mechanism” is an adjustment configured to adjust the rotational speed of the feeding roll 44 by shifting the supply power supplied from the balance-type drive mechanism 45 to the feeding roll 44. Although the mechanism 46 is illustrated, it is not restricted to this. For example, another “adjustment mechanism” configured to be able to adjust the rotation speed of the feeding roll 44 by supplying power different from the supply power supplied to the feeding roll 44 from the balance-type drive mechanism 45. Also good.

(4) In the above embodiment, as the “adjustment mechanism”, the adjustment mechanism 46 that increases the rotational speed of the feeding roll 44 as the traveling speed of the traveling machine body 10 increases is exemplified, but the present invention is not limited thereto. . For example, another “adjustment mechanism” that can change the volume of the accommodating portion of the feeding roll 44 may be used. In this case, it is preferable to increase the volume of the accommodating portion of the feeding roll 44 as the traveling speed of the traveling machine body 10 increases.

(5) In the above embodiment, the balance-type drive mechanism 45 is exemplified as an example of the “drive mechanism”, but the drive mechanism is not limited to this, and may be another type of drive mechanism.

(6) Although the feeding roll 44 is illustrated as the “rotating body” in the above embodiment, the present invention is not limited to this. For example, a plurality of other “accommodating portions” such as through-holes may be formed, and another “rotating body” made of a disk material that is rotatable around the longitudinal axis may be used. In this case, the fixing member in which the supply hole connected to the fertilization hose 40 adjacent to the downward direction of a disk material was formed is provided. The “agricultural material” temporarily stored in another “accommodating portion” such as a through-hole is supplied to the field side through the supply hole of the fixing member as the disk material rotates.

(7) In the above-described embodiment, the roll members 50 that are adjacent to each other have different phases in which the accommodating portions 51 are disposed in the roll members 50, but the present invention is not limited thereto.
The phase which arrange | positions the accommodating part 51 in the roll member 50 between the mutually adjacent roll members 50 may be the same.

(8) In the above-described embodiment, the metering motor 47 configured by an electric motor is exemplified as the “actuator”, but is not limited thereto. For example, another “actuator” such as a mechanical link mechanism that operates by hydraulic pressure or the like may be used.

(9) In the above embodiment, the wheel rotation sensor 19 that detects the rotation of the rear wheel 12 is exemplified as the “vehicle speed sensor”, but is not limited thereto. For example, another “vehicle speed sensor” such as a wheel rotation sensor that detects the rotation of the front wheel 11 may be used.

(10) In the above embodiment, it is determined in step # A5 whether or not the discharge switch 109 is in the on state. However, the present invention is not limited to this. For example, it may be determined whether the hanger sensor 117 is in the on state (whether the hanger member 99 is in the use state U1).

(11) In the above embodiment, the grooving device 39 whose entire surface is coated with a fluorine-based resin is exemplified, but the present invention is not limited thereto. For example, the groove forming device 39 in which only the inner surface through which the fertilizer passes, not the entire surface, may be covered with the fluororesin.

(12) In the above embodiment, the seat member 113 is provided on the left and right sides, but the present invention is not limited to this. For example, the seat member 113 may be provided on both the left and right sides.

(13) In the above embodiment, when it is detected that the hanger member 99 is in the use state U1 based on the detection by the hanger sensor 117, the traveling machine body 10 travels based on the detection by the wheel rotation sensor 19. Although an example in which a continuous sound is generated by the buzzer 115 upon detection is illustrated, the present invention is not limited to this. For example, when it is detected that the hanger member 99 is in the usage state U1 based on the detection by the hanger sensor 117, the hydrostatic continuously variable transmission is forced to the neutral position, for example, so that traveling is impossible. You may be comprised so that it may become.

(14) In the above embodiment, the one provided with the two load cells 81 is exemplified, but the present invention is not limited to this. For example, one or three or more load cells 81 may be provided.

(15) In the above embodiment, the fertilizer application device 17 is exemplified as the “supply device”, but the present invention is not limited to this. For example, other “supply” such as a chemical spraying device that sprays and supplies powdered chemicals as “agricultural materials” to the field, and a seeding device that seeds and supplies seeds such as rice as “agricultural materials” to the field. It may be an “apparatus”. Moreover, although the riding type rice transplanter is illustrated as a "paddy field machine", it is not restricted to this. For example, other “paddy field machines” such as a riding type direct seeder equipped with the seeding device may be used.

(16) In the above embodiment, a riding rice transplanter capable of planting seedlings while traveling is exemplified as the “paddy field working machine”, but is not limited thereto. For example, it may be another “paddy field machine” such as a riding type direct sowing machine capable of directly sowing grain seeds such as rice seeds while traveling. In the case of a passenger-type direct sowing machine, a sowing apparatus is used as the “feeding apparatus”.

10: traveling machine body 17: fertilizer application device (supply device)
19: Wheel rotation sensor (vehicle speed sensor)
37: Hopper 38: Feeding mechanism 39: Grooving device 44: Feeding roll (rotating body)
45: Balance type drive mechanism (drive mechanism)
46: Adjustment mechanism 47: Metering motor (actuator)
50: Roll member 51: Storage unit 120: Metering control unit (control unit)
R: Speed region T: Threshold speed Y: Center of rotation

Claims (6)

A supply device for supplying agricultural materials to the field is provided,
The supply device is provided with a hopper for storing agricultural material, and a feeding mechanism for feeding out the agricultural material stored in the hopper,
Based on the rotating body in which the feeding mechanism is formed with a housing part that can temporarily store the agricultural material stored in the hopper and then can be released to the field side, and the branching power branched from the traveling transmission system A drive mechanism that rotationally drives the rotating body, an adjustment mechanism that can adjust a set amount per field unit area for supplying agricultural materials, and an actuator that can operate the adjustment mechanism,
A vehicle speed sensor for detecting the traveling speed of the traveling aircraft,
A control unit for controlling the actuator, is provided, et al is,
A threshold speed related to the travel speed is set in the control unit,
The control unit controls the actuator so that the set amount becomes a preset value when the travel speed is less than the threshold speed, and the rotating body when the travel speed is equal to or greater than the threshold speed. A paddy field machine configured to control the actuator so that the set rate becomes larger than the set value by increasing the rate of increase of the rotation speed . A plurality of speed regions related to the traveling speed are set in the control unit, adjustment values related to the set amount are set for each speed region, and a larger value is set as the adjustment value from the low speed side to the high speed side. Set,
The paddy field work machine according to claim 1 , wherein the control unit is configured to control the actuator so that the set amount becomes the adjustment value corresponding to the speed region to which the traveling speed belongs. The paddy field work machine according to claim 1 or 2 , wherein the adjustment mechanism is configured to be able to adjust a rotation speed of the rotating body by shifting a supply power supplied from the driving mechanism to the rotating body. A plurality of the accommodating portions are provided along the circumferential direction of the rotating body on the outer peripheral portion of the rotating body,
The rotating body is rotating direction of Tenjikukokoro is paddy working machine according to any one of claims 1 to 3, which is arranged such that the flow-down direction and the direction substantially perpendicular to the agricultural materials in the hopper . The rotating body includes a plurality of roll members arranged along the direction of the rotation axis,
The accommodating portion is provided for each of the roll members,
The paddy field work machine according to claim 4 in which the phase which arranges said storage part in said roll member differs between said roll members which adjoin mutually. A grooving machine is provided that supplies agricultural material fed from the feeding mechanism to the groove while forming a groove in a farm field as the traveling machine body travels.
The paddy field machine according to any one of claims 1 to 5 , wherein the groove producing device is coated with a fluorine-based resin.

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