JP2016054659A - Rice field implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice field implement for suppressing the fluctuating motions of an agriculture feeder against a running vehicle body thereby to improve the stability of the machine body.SOLUTION: A rice field implement comprises: a driving seat 15 and a rear step 16 at the rear portion of a running vehicle; an agricultural supply device A on the machine body posterior of the driving seat 15 in the rear of the running vehicle; a first substrate B1 extending from the body frame of the running vehicle for supporting the agriculture supply device A; and a second substrate B2 extending backward from the body frame for supporting the agriculture supply device A from the front.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a paddy field work machine provided with a driver's seat and a rear step at a rear part of a traveling vehicle body and provided with an agricultural supply device at the rear side of the vehicle body of the driver's seat at the rear part of the traveling vehicle body.

  As the paddy field work machine as described above, there is provided a first support body (feeding strut, tank strut, etc.) that extends upward from the body frame of the traveling vehicle body and supports the agricultural supply device (fertilizer) from below. Yes (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2003-310008 (paragraph number 0066, FIGS. 4 to 6)

  In the above configuration, since the agricultural supply device is only supported from below, the agricultural supply device is easily swayed in the front-rear direction and the left-right direction with respect to the traveling vehicle body due to vibrations of the airframe during traveling. And since the agricultural supply device is deployed at a relatively high position on the rear side of the driver's seat in the rear part of the traveling vehicle body, the swinging movement tends to be one of the factors that reduce the stability of the aircraft, There is room for improvement in improving stability.

  It is an object of the present invention to suppress the shaking movement of the agricultural supply device with respect to the traveling vehicle body and to improve the stability of the aircraft.

The problem-solving means of the present invention is a paddy field machine,
A driving seat and a rear step are provided at the rear of the traveling vehicle body, and an agricultural supply device is provided on the rear side of the vehicle body of the driving seat at the rear of the traveling vehicle body,
A first support that extends from a vehicle body frame of the traveling vehicle body and supports the agricultural supply device from below; and a second support that extends backward from the vehicle body frame and supports the agricultural supply device from the front. ing.

  According to this means, the agricultural supply device is supported in a stable state from below by the first support B, and in a suitable state in which the swinging movement in the left-right direction and the front-rear direction with respect to the traveling vehicle body is suppressed by the second support body, It can be deployed at the rear of the vehicle body.

  Therefore, the stability of the airframe during traveling can be improved.

As one of the means for making the present invention more suitable,
The vehicle body frame includes a rear frame that supports the rear step, and a seat frame that supports the driver's seat,
The first support extends from the rear frame, and the second support extends rearward from the seat frame.

  According to this means, among the vehicle body frames, the agricultural food supply is provided by the first support using the rear frame located near the agricultural supply device by supporting the rear step disposed at the rear of the traveling vehicle body together with the agricultural supply device. Since the device is supported, the length of the first support can be shortened. Thereby, the structure of a 1st support body can be simplified.

  Moreover, it is located near the agricultural supply device on the front side of the agricultural supply device by supporting the driving seat arranged at the rear of the traveling vehicle body together with the agricultural supply device in an arrangement positioned on the front side of the agricultural supply device in the vehicle body frame. Since the agricultural supply apparatus is supported from the front by the second support using the seat frame, the length of the second support can be shortened. Thereby, the structure of a 2nd support body can be simplified.

  Therefore, it is possible to improve the stability of the airframe during traveling while simplifying the configuration of the first support body and the second support body.

As one of the means for making the present invention more suitable,
The extended end portion of the first support body is located on the rear side of the machine body from the extended end portion of the second support body, and functions as a support portion that supports the rear portion of the agricultural supply device,
The extended end portion of the second support body is located on the rear side of the machine body from the rear end of the rear step, and functions as a support portion that supports the front portion of the agricultural supply apparatus.

  According to this means, the agricultural supply device can be arranged at a position behind the rear step in the traveling vehicle body. As a result, the tread area of the rear step used as a step during replenishment work for the agricultural supply device performed from the traveling vehicle body side is made wider than, for example, when the rear step is also used as a mounting table for the agricultural supply device. Can do.

  Therefore, the replenishment work for the agricultural supply apparatus performed from the traveling vehicle body side can be facilitated.

As one of the means for making the present invention more suitable,
The extending end portion of the first support body and the extending end portion of the second support body are located above the rear step and function as a connecting portion that connects to the agricultural supply apparatus.

  According to this means, in the configuration in which the connecting portion of the first support body and the second support body is located below the rear step, the lower step is required when connecting the agricultural supply device to the connecting portion. It is possible to eliminate the need for connecting work in the state.

  Therefore, the assembling property of the agricultural supply device with respect to the traveling vehicle body can be improved.

As one of the means for making the present invention more suitable,
The first support is disposed on both the left and right sides of the traveling vehicle body.

  According to this means, the left and right ends of the agricultural supply apparatus can be supported from below with good stability by the left and right first supports.

  Therefore, the stability of the airframe during traveling can be further improved.

As one of the means for making the present invention more suitable,
The second support is disposed directly behind the driver seat.

  According to this means, in the rear step, it is possible to support from the front of the agricultural supply device by the second support body by using the rear portion of the driver's seat that is less frequently used.

  Therefore, the stability of the airframe during traveling can be improved without impairing workability such as replenishment work for the agricultural supply apparatus performed using the rear step.

As one of the means for making the present invention more suitable,
The traveling vehicle body includes a position adjustment mechanism that enables position adjustment of the driver seat in the longitudinal direction of the fuselage,
The second support body includes a receiving member that receives a rear end portion of the driver seat displaced to the rear side of the machine body and prevents the driver seat from tilting backward.

  According to this means, the rear end portion of the driver's seat displaced to the rear side of the aircraft can be received with the configuration using the second support. And this catching causes the driver's seat to tilt backward and causes the driver's seat back to be fed for farming because the driver's seat leans back on the back of the driver's seat near the agricultural feeder by being displaced to the rear of the aircraft. The possibility of contact with the apparatus can be avoided.

  Therefore, it is possible to avoid the possibility of inconvenience such as damage to the agricultural supply device due to the contact of the driver seat with the agricultural supply device while simplifying the receiving structure for the driver seat.

As one of the means for making the present invention more suitable,
The agricultural supply apparatus includes a drive shaft that is rotated by power from the traveling vehicle body via a one-way clutch, and a detachable operation tool that enables manual rotation drive of the drive shaft,
The second support includes a storage section for an operation tool that enables storage of the operation tool.

  According to this means, without interrupting transmission to the drive shaft, the drive shaft can be rotated and the agricultural supply apparatus can be operated by manual operation using the operation tool. Thereby, the supply amount with respect to the rotation speed of the drive shaft in the agricultural supply apparatus can be easily confirmed.

  And when not using an operating tool, an operating tool can be stored in the storage part for operating tools with which the 2nd support body was equipped. That is, with the configuration using the second support, it is possible to make it difficult for the operating tool removed from the drive shaft to be lost.

As one of the means for making the present invention more suitable,
The agricultural supply apparatus includes a plurality of supply paths, and a shutter that is detachable in a detached state in which a predetermined supply path is opened and in a mounted state in which the predetermined supply path is closed,
The second support includes a shutter storage unit that enables storage of the shutter.

  According to this means, the number of supply paths to be used can be easily changed by attaching and detaching the shutter. And when not using a shutter, a shutter can be stored in the storage part for shutters provided in the 2nd support. That is, with the configuration using the second support, it is possible to prevent the loss of the shutter removed from the agricultural supply apparatus.

As one of the means for making the present invention more suitable,
The second support includes a support for an electronic control unit that supports the electronic control unit.

  According to this means, the electronic control unit can be supported by the configuration using the second support. Thereby, compared with the case where a dedicated support member is provided, the structure can be simplified by reducing the number of parts.

It is a left view of a riding rice transplanter. It is a top view of a riding rice transplanter. It is the vertical left side view of the rear part in a riding rice transplanter. It is a front view of a fertilizer applicator. It is a cross-sectional top view of a fertilizer applicator. It is a rear view of a fertilizer applicator. It is a perspective view which shows the support structure of a fertilizer application apparatus. It is a vertical left view which shows the support structure of a fertilizer applicator. It is a top view of the principal part which shows the drive structure of an extending | stretching mechanism, and the operation structure of each strip number switching clutch. It is a cross-sectional top view of the principal part which shows structures, such as a feed amount adjustment mechanism. It is a front view of the principal part which shows structures, such as a feed amount adjustment mechanism. It is a right view of the principal part which shows structures, such as a feeding transmission mechanism and a feeding amount adjustment mechanism. It is a vertical front view of the principal part which shows structures, such as a power transmission mechanism and a feed amount adjustment mechanism. It is a cross-sectional top view of the principal part which shows the structure of the power transmission mechanism. It is a vertical right side view of the principal part showing a state before the second arm is forwardly swung (after reverse rocking) in a state where the linkage arm is operated to the position where the feeding amount is maximum in the standard fertilization state. It is a vertical right side view of the principal part showing a state before the second arm is back-swinged (after forward-swinging) in a state where the linkage arm is operated to the position where the feeding amount is maximum in the standard fertilization state. It is a vertical right side view of the transmission mechanism for feeding showing a state before the second arm is forwardly swung (after backward rocking) in a state in which the linkage arm is operated to the minimum amount of feeding amount in the standard fertilization state. FIG. 10 is a vertical right side view of the feeding transmission mechanism showing a state before the second arm is back rocked (after forward rocking) in a state where the linkage arm is operated to the minimum feeding amount position in the standard fertilization state. It is a vertical right side view of the transmission mechanism for feeding showing the state switched to the reduced weight fertilization state. It is a vertical left view of the principal part which shows structures, such as a 2nd support body. It is a vertical front view of the principal part which shows structures, such as a 2nd support body. It is a cross-sectional top view of the principal part which shows structures, such as a 2nd support body.

  Hereinafter, as an example of a mode for carrying out the present invention, an embodiment in which the present invention is applied to a riding rice transplanter that is an example of a paddy field work machine will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the riding rice transplanter exemplified in the present embodiment includes a traveling vehicle body 1 configured in a riding type four-wheel drive type. A parallel link type link mechanism 2 is connected to the rear lower portion of the traveling vehicle body 1 so as to be vertically swingable. Further, a seedling planting device 3 for four-row planting is connected to the rear lower part of the link mechanism 2 so as to be able to roll. On the other hand, as an example of the agricultural supply apparatus A, a four-way fertilizer application apparatus 4 for supplying granular fertilizer, which is an example of a supply to the field, to the field is disposed at the rear upper part of the traveling vehicle body 1. Thereby, it has comprised to the mid-mount fertilization specification for 4 row planting which can plant a maximum of 4 seedlings and fertilization. And the raising / lowering cylinder 5 which raises / lowers the seedling planting apparatus 3 via the link mechanism 2 is provided in the rear part. A single-acting hydraulic cylinder is adopted as the lifting cylinder 5.

  As shown in FIGS. 1 to 3, the traveling vehicle body 1 includes an air-cooled engine 7 and the like at the front portion of the vehicle body frame 6. Further, a boarding operation unit 8 and the like are provided on the rear side of the vehicle body frame 6. The body frame 6 is connected to the front frame 9 for mounting the engine, a transmission case (hereinafter referred to as a T / M case) 10 connected to the rear end portion of the front frame 9, and the rear end portion of the T / M case 10. A rear frame 11, a seat frame 12 connected to the upper end of the rear frame 11, and the like. The boarding driver 8 includes a steering wheel 13 for steering the front wheels, a boarding step 14, a driver seat 15, a rear step 16, and the like.

  As shown in FIGS. 1 and 3, the T / M case 10 includes a left and right front axle case 17 extending laterally outward from the left and right sides of the front side, and a rear and left side of the rear side. The left and right swing cases 18 are extended. In addition, left and right front wheels 19 are mounted on the extending ends of the left and right front axle cases 17 so as to be steerable and drivable. Further, left and right rear wheels 20 are drivably mounted on the extending ends of the left and right swing cases 18. The left and right swing cases 18 swing up and down with a transmission shaft 21 extending in the left and right direction extending from the T / M case 10 to the left and right swing cases 18. These free end sides are connected to the vehicle body frame 6 via the left and right suspension mechanisms 22.

  As shown in FIGS. 1 to 8, the rear frame 11 is connected to the rear end portion of the T / M case 10 so that the support portion 11 </ b> A extending upward is located behind the T / M case 10. It is composed. And the rear step 16 provided in the rear upper part of the traveling vehicle body 1 is supported from below by the upper surface of the support part 11A. The rear step 16 has a lateral width longer than the wheel interval of the left and right rear wheels 20. And the cover part 16A used also as the rear-wheel fender extended toward the boarding step 14 from the right and left front ends is integrally formed.

  The seat frame 12 is connected to the upper end portion of the rear frame 11 together with the rear step 16 and is disposed above the rear step 16. The driver seat 15 provided at the rear upper part of the traveling vehicle body 1 is supported via the left and right cushion rubbers 23 and a position adjusting mechanism 24 that enables position adjustment of the driver seat 15 in the longitudinal direction of the body. . The position adjusting mechanism 24 includes a left and right support shaft 25 that is detachably provided at the front end of the seat frame 12, a left and right bracket 26 that is provided on the driver seat 15, and the like. Then, three through holes 26A for inserting the support shafts are formed in the left and right brackets 26 at predetermined intervals in the front-rear direction, so that the position of the driver seat 15 can be adjusted in three stages in the front-rear direction. ing. Further, it is possible to perform a swinging operation over the use position of the driver seat 15 with the support shaft 25 as a fulcrum and the forward lying position.

  As shown in FIG. 1, the power from the engine 7 is transmitted to a hydrostatic continuously variable transmission 28 provided as a main transmission via a belt tension type main clutch 27 and the like. The power after the shift by the hydrostatic continuously variable transmission 28 is branched into first power and second power inside the T / M case 10. The first power is transmitted to a gear-type auxiliary transmission (not shown) built in the T / M case 10. Then, the first power after the shift by the auxiliary transmission is branched into traveling and fertilizer application inside the T / M case 10. The traveling power is branched into front wheel driving and rear wheel driving inside the T / M case 10. Power for driving the front wheels is transmitted to the left and right front wheels 19 via a front wheel transmission system (not shown). Further, power for driving the rear wheels is transmitted to the left and right rear wheels 20 via a rear wheel transmission system (not shown). The power for fertilizing is transmitted to the fertilizing device 4 via a fertilizing clutch (not shown) built in the T / M case 10. The second power is transmitted to the seedling planting device 3 for seedling planting through a gear-type inter-strain transmission (not shown) and a planting clutch (not shown) incorporated in the T / M case 10. ing. The planting clutch is linked to the fertilization clutch so that the fertilization clutch is similarly intermittently operated in conjunction with the intermittent operation.

  As shown in FIGS. 1 and 2, the seedling planting device 3 includes a four-level leveling float 30, a four-row seedling platform 31, a power distribution mechanism 32, a lateral feed mechanism 33, and four rotary-type plantings. An attachment mechanism (hereinafter referred to as a planting mechanism) 34, four vertical feed mechanisms 35, and the like are provided.

  The leveling float 30 slides while leveling the mud surface of the farm field as the traveling vehicle body 1 travels during work traveling. The seedling stage 31 is formed so as to place a maximum of four mat-like seedlings. The power distribution mechanism 32 distributes and supplies the power from the traveling vehicle body 1 to the lateral feed mechanism 33, each planting mechanism 34, and each vertical feed mechanism 35. The lateral feed mechanism 33 reciprocates the seedling stage 31 with a constant stroke in the left-right direction by the power from the power distribution mechanism 32. Each planting mechanism 34 cuts a predetermined amount of planted seedlings from the lower end of the mat-like seedling that reciprocates in the left-right direction together with the seedling mount 31 by the power from the power distribution mechanism 32 and after leveling by the leveling float 30. Plant in the field mud. Each vertical feed mechanism 35 feeds a corresponding mat-like seedling vertically toward the lower end of the seedling stage 31 at a predetermined pitch by the power from the power distribution mechanism 32 every time the seedling stage 31 reaches the left and right stroke ends. To do. And by these operation | movement, the seedling planting apparatus 3 is comprised for 4 articles | strands which can plant a maximum of 4 seedlings.

  Although illustration is omitted, the seedling planting device 3 includes a seedling stopper that enables each mat-shaped seedling placed on the seedling placing table 31 to selectively prevent downward movement. In addition, a seedling shortage sensor (not shown) for detecting that the remaining amount of each mat-shaped seedling placed on the seedling placing stand 31 is lower than a set value is provided.

  As shown in FIGS. 1 to 6, the fertilizer application device 4 includes a fertilizer frame 36, a fertilizer storage hopper 37, left and right feeding mechanisms 38, four fertilizer hoses 39, four groovers 40, and an electric motor A blower 41 is provided. And it arrange | positions to the aircraft body rear side of the driver's seat 15 in the rear part of the traveling vehicle body 1. FIG.

  The fertilizer application frame 36 is configured by bolting a left and right main member 42 that supports the left and right feeding mechanism 38 from the rear and a left and right auxiliary member 43 that supports the left and right feeding mechanism 38 from the front. .

  The hopper 37 is formed in a horizontally long shape for storing 6 pieces of granular fertilizer. And the left-right center is arrange | positioned in the rear upper part of the traveling vehicle body 1 with each feeding mechanism 38 and the blower 41 by the arrangement | positioning which corresponds with the left-right center of a body. In addition, three discharge portions 37A are provided at the lower end portion thereof, two of which are arranged side by side on the left and right center side of the lower end portion, and the other one is disposed on the right outer side of the right discharge portion 37A. Yes. In addition, the guide member 44 that prevents the granular fertilizer from flowing into the left and right central discharge portions 37A among the three discharge portions 37A and that guides the granular fertilizer down to the left and right outer discharge portions 37A can be attached and detached. In preparation. In other words, the specification of the hopper 37 for six strips is changed to that for four strips by mounting the guide member 44 on the hopper 37 for six strips. The hopper 37 is provided with a fertilizer runout sensor (not shown) that detects that the remaining amount of the stored granular fertilizer is lower than a set value.

  Each feeding mechanism 38 is connected by a fertilization frame 36 in an arrangement corresponding to the left and right outer discharge portions 37A among the three discharge portions 37A provided in the hopper 37. And the upper end part is connected with the discharge part 37A of the left-right outer side. In addition, a feed roll 45 that is rotated by fertilizing power from the traveling vehicle body 1 is provided therein. Then, from the plurality of recesses 45A provided in the left half of each feeding roll 45 and the plurality of recesses 45A provided in the right half, by the rotation of each feeding roll 45, two pieces of granular fertilizer from the inside of the hopper 37 Is configured for two items that are fed downward by a predetermined amount. Thereby, it is set as the structure which pays out the granular fertilizer for a maximum of four strips.

  Each fertilization hose 39 has one end thereof connected to the corresponding feeding mechanism 38. Moreover, the groove making machine 40 is connected to those other end parts. Then, the granular fertilizer fed by each feeding mechanism 38 is guided to the corresponding groove producing device 40.

  Each grooving device 40 is arranged and set at a position adjacent to the corresponding planting mechanism 34 in the lateral direction of the machine body and attached to the leveling float 30. And the groove | channel for fertilization is formed in the mud part of a farm field with driving | running | working of the traveling vehicle body 1 at the time of work driving | running | working, and granular fertilizer is buried in the groove | channel. A fertilizer clogging sensor (not shown) that detects clogging of fertilizer in the grooving device is provided on the inner surface of each grooving device 40.

  The blower 41 is bolted to the left end portion of the fertilization frame 36. And by operating with the electric power from the traveling vehicle body 1, the conveyance wind which goes through the inside of each fertilization hose 39 from each feeding mechanism 38 toward each groove producing device 40 is produced. Thereby, the flow in each fertilization hose of the granular fertilizer which each delivery mechanism 38 paid out can be made smooth.

  The fertilizer applicator 4 forms four systems of supply paths 46 from left and right feeding mechanisms 38, four fertilizer hoses 39, and four groovers 40. In addition, two shutters 47 that are detachable in a detached state in which a predetermined supply path 46 is opened and in a mounted state in which the predetermined supply path 46 is closed are provided. Each shutter 47 can be selectively mounted on the left and right shutter mounting portions 38 </ b> A provided in each feeding mechanism 38 from the front side of each feeding mechanism 38. And in the mounting state, the flow of the granular fertilizer to the left half part or right half part of the supply roll 45 corresponding to a mounting location is interrupted | blocked. Thereby, the supply path | route 46 corresponding to a mounting location is closed.

  As shown in FIGS. 1 to 6 and FIG. 9, the fertilizer application device 4 includes a left and right drive shaft 48 extending across the left and right feed mechanism 38, and a feeding transmission mechanism that transmits power for fertilization from the traveling vehicle body 1 to the drive shaft 48. 49 and a feed amount adjusting mechanism 50 that enables batch adjustment of the fertilizer feed amount by each feed mechanism 38.

  The drive shaft 48 is externally fitted with two output gears 52 that mesh with and interlock with the input gears 51 provided in the respective feeding mechanisms 38. Further, two fertilizer application number switching clutches 53 for intermittently transmitting power from the drive shaft 48 to the corresponding output gear 52 are externally fitted. Each fertilization line number switching clutch 53 is linked to two line number switching levers 54 provided in the boarding operation unit 8 via two fertilization line number switching operation systems 55. Thereby, the intermittent operation by the corresponding number switching lever 54 is enabled.

  On the other hand, the seedling planting device 3 includes two planting line number switching clutches 56 that intermittently transmit power from the power distribution mechanism 32 to the corresponding two planting mechanisms 34, and two vertical channels that correspond from the power distribution mechanism 32. Two longitudinal feed number switching clutches 57 for intermittently transmitting power to the feed mechanism 35 are provided. Each planting number switching clutch 56 is linked to the corresponding number switching lever 54 through two planting number switching operation systems 58. Thereby, the intermittent operation by the corresponding number switching lever 54 is enabled. Each longitudinal feed number switching clutch 57 is linked to the corresponding number switching lever 54 via two longitudinal feed number switching operation systems 59. Thereby, the intermittent operation by the corresponding number switching lever 54 is enabled.

  From the above configuration, by operating each row number switching lever 54, the working state of this riding rice transplanter is operated by all the planting mechanisms 34 and the vertical feed mechanism 35 in the seedling planting device 3, and the fertilizer 4 for operating all the feeding mechanisms 38 in 4, operating the planting mechanism 34 and the longitudinal feed mechanism 35 for the left two strips in the seedling planting device 3, and the left feeding mechanism in the fertilizer application device 4. The right side of the left two-row working state that operates 38, the right two-row planting mechanism 34 and the vertical feed mechanism 35 in the seedling planting device 3 are operated, and the right feeding mechanism 38 in the fertilizer application device 4 is operated. Select the two-row working state or the all-row stop state in which all the planting mechanisms 34 and the vertical feed mechanisms 35 in the seedling planting device 3 are stopped and all the feeding mechanisms 38 in the fertilizer application device 4 are stopped. Switch to one It is possible.

  Then, by using the seedling stopper and the shutter 47 described above, the working state of the riding rice transplanter prevents the right end mat-like seedling from moving downward in the full-row working state, and in the fertilizer application device 4 In the left three-row working state and the left two-row working state in which the right end supply path 46 is closed, the left second mat-like seedling is prevented from moving downward, and the left second supply path in the fertilizer application device 4 Left-hand single-row working state in which 46 is closed, right-hand three-row working state in which the left-end mat-like seedling is prevented from moving downward in the full-row working state and the left-end supply path 46 in the fertilizer application device 4 is closed, or In the right two-line work state, the right-side second mat-like seedling is prevented from moving downward, and the right second single-line work state in the fertilizer application device 4 is closed. Kill.

  As shown in FIGS. 5, 6, 9, and 10, the fertilizer application device 4 includes a fertilizer stop switching lever 60 that collectively switches the feeding mechanisms 38 to a stopped state. The switching lever 60 is provided at the right end of the fertilizer application frame 36 so as to be able to switch between a stop position and a stop release position. Then, each fertilizer application number switching clutch 53 is linked to each other via a fertilization state switching operation system 62 including a left-right linking member 61 and the like. Accordingly, each feeding mechanism 38 is configured to be switched to the stopped state regardless of the operation position of each number switching lever 54 with the swinging operation of the switching lever 60 from the stop release position to the stop position. . Further, as the switching lever 60 swings from the stop position to the stop release position, each feeding mechanism 38 is configured to switch to an operating state corresponding to the operation position of the corresponding number switching lever 54. .

  That is, by swinging the switching lever 60 for stopping fertilization, the working state of the riding rice transplanter is changed to a planting fertilization state in which seedling planting device 3 performs seedling planting and fertilizer device 4 fertilization, and fertilizer application device. It is possible to switch to a planting state in which only seedling planting by the seedling planting apparatus 3 is performed without performing fertilization according to 4.

  As shown in FIGS. 1, 3 to 5, and FIGS. 10 to 19, the feeding transmission mechanism 49 outputs a fertilization power take-off shaft 63 facing left and right provided on the left side of the T / M case 10 as power for fertilization. A first conversion unit 64 that converts the rotational power to be reciprocated into a reciprocating oscillating motion; and a second conversion unit 65 that converts the reciprocating oscillating motion into a positive rotational motion of the drive shaft 48. And the 2nd conversion part 65 linked with the feed amount adjustment mechanism 50 mentioned above is arranged with the feed amount adjustment mechanism 50 in the right end part of the body.

  The first converter 64 includes a connecting rod 67 whose one end is pin-connected to a rotating arm 66 that rotates integrally with the fertilization power take-off shaft 63, a first arm 68 that is pin-connected to the other end of the connecting rod 67, and a first arm 68. And a second arm 70 secured to the right end of the linkage shaft 69 so as to swing integrally with the first arm 68 via the linkage shaft 69. Yes. With these, the rotational power from the fertilizer power take-out shaft 63 is converted into the reciprocating swing motion of the first arm 68 and the second arm 70.

  The drive shaft 48 is equipped with a one-way clutch 71 for preventing reverse rotation that prevents reverse rotation of the drive shaft 48 at its rightmost end. The one-way clutch 71 for preventing reverse rotation has its outer race 71A fixed to the main member 42 of the fertilizer frame 36 by bolts.

  The second conversion unit 65 is configured so that the first one-way clutch 72 and the second one-way clutch 73 for forward rotation operation that enable the forward rotation operation of the drive shaft 48 and the forward direction of the second arm 70 in the first conversion unit 64 (airframe) The first link mechanism 74 that transmits the swinging motion in the rearward direction to the drive shaft 48 as the positive rotational power of the drive shaft 48 via the left first one-way clutch 72, and the second arm 70 of the first converter 64. And a second link mechanism 75 that transmits the swinging motion in the backward direction (frontward of the machine body) to the drive shaft 48 as the positive rotational power of the drive shaft 48 via the second second-way clutch 73 on the right side.

  The first one-way clutch 72 and the second one-way clutch 73 are externally fitted to the right end portion of the drive shaft 48 in a state of being arranged side by side at a position on the inner side of the body relative to the one-way clutch 71 for preventing reverse rotation.

  The first link mechanism 74 includes a turnbuckle-type connecting rod 76 whose one end is pin-connected to the second arm 70, a swing member 77 pin-connected to the other end of the link rod 76, and one end of the swing member 77. The first linkage member 78 is pin-coupled, and the first swing link 79 is pin-coupled to the other end of the first linkage member 78.

  The second link mechanism 75 includes a linkage rod 76 and a swing member 77 shared with the first link mechanism 74, a second link member 80 having one end connected to the swing member 77, and a second link member 80. The second swing link 81 is connected to the end by a pin.

  The first swing link 79 has a proximal end fixed to the outer race 72 </ b> A of the first one-way clutch 72. The base end of the second swing link 81 is fixed to the outer race 73 </ b> A of the second one-way clutch 73. As a result, the second linkage member 80 and the second swing link 81 of the second link mechanism 75 are located on the right outer side of the airframe relative to the first linkage member 78 and the first swing link 79 of the first link mechanism 74. It is configured as follows.

  The second link mechanism 75 is configured to be switchable between a transmission state that transmits to the drive shaft 48 and a transmission stop state that stops transmission. With this configuration, when the second link mechanism 75 is switched to the transmission state, the forward swinging motion and the backward swinging motion of the second arm 70 in the first conversion unit 64 are performed via the second conversion unit 65. This can be transmitted as the positive rotational power of the drive shaft 48. Thereby, the rotation angle of the feeding roll 45 in each feeding mechanism 38 obtained from the reciprocating swing of the second arm 70 can be increased, and each of the feeding mechanisms 38 per one reciprocating swing of the second arm 70. Fertilizer feed amount can be increased. On the other hand, when the second link mechanism 75 is switched to the transmission stop state, only the forward swinging motion of the second arm 70 in the first conversion unit 64 is transferred to the forward rotation power of the drive shaft 48 via the second conversion unit 65. Can be communicated as. Thereby, the rotation angle of the feeding roll 45 in each feeding mechanism 38 obtained from the reciprocating swing of the second arm 70 can be reduced, and each of the feeding mechanisms 38 per one reciprocating swing of the second arm 70 can be reduced. Fertilizer feed amount can be reduced.

  That is, by switching the second link mechanism 75 between the transmission state and the transmission stop state, the fertilizer feeding state of each feeding mechanism 38 is set to the standard amount of the fertilizer feeding amount per one reciprocating swing of the second arm 70. It is possible to switch between the first feeding state and the second feeding state in which the fertilizer feeding amount per one reciprocating swing of the second arm 70 is less than the standard amount, and the operating state of the fertilizer application device 4 is changed to the standard amount of fertilization. It can switch to the standard fertilization state to perform and the weight reduction fertilization state to perform fertilization with less fertilization amount than a standard amount.

  As shown in FIGS. 2, 4 to 6, and FIGS. 10 to 19, the feed amount adjusting mechanism 50 includes a screw shaft 82 that can be swung up and down and a front and rear handle shaft 83 that is fixed to the front end of the screw shaft 82. And a linkage arm 84 that links the screw shaft 82 to the swinging member 77 of the second conversion portion 65.

  Then, when the handle 83 is rotated in the decreasing direction, the linkage arm 84 is oscillated and displaced in the declining direction by the screw feeding action by the screw shaft 82, and along with this oscillating displacement, the oscillating member of the second converter 65. 77 is oscillated and displaced in the decreasing direction. As a result, the bending of the oscillating links 79 and 81 and the linking members 78 and 80 that link the oscillating member 77 and the one-way clutches 72 and 73 for forward rotation operation becomes shallow, and the oscillating angle of the oscillating member 77 is reduced. The swing angle of the swing links 79 and 81 with respect to is reduced. As a result, the fertilizer feed amount by each feed mechanism 38 of the fertilizer applicator 4 can be reduced collectively.

  On the contrary, when the handle 83 is rotated in the increasing direction, the linkage arm 84 is oscillated and displaced in the increasing direction by the screw feeding action by the screw shaft 82, and the oscillation of the second conversion portion 65 is accompanied by this oscillating displacement. The member 77 is oscillated and displaced in the increasing direction. As a result, the bending of the linking members 78 and 80 and the oscillating links 79 and 81 linking the oscillating member 77 and the one-way clutches 72 and 73 for forward rotation operation becomes deep, and the oscillating angle of the oscillating member 77 is increased. The swing angle of the swing links 79 and 81 with respect to the is increased. As a result, the fertilizer feed amount by each feed mechanism 38 of the fertilizer applicator 4 can be increased collectively.

  That is, the feed amount adjustment mechanism 50 is configured as a screw feed adjustment type that adjusts the fertilizer feed amount by each feed mechanism 38 steplessly in a batch by the screw feed action of the screw shaft 82.

  The 2nd conversion part 65 is the case where each fertilizer delivery amount in the reduced amount fertilization state of the fertilizer application device 4 when the fertilizer feed amount of each feed mechanism 38 in the standard fertilization state of the fertilizer applicator 4 is set to the minimum by the feed amount adjustment mechanism 50 When the fertilizer feed amount of the mechanism 38 is set to the maximum by the feed amount adjusting mechanism 50, the rotation of the drive shaft 48 in the positive rotation direction with respect to one reciprocating swing of the second arm 70 in the first conversion unit 64 is performed. The link ratio of the first link mechanism 74 and the second link mechanism 75 is set so that the corners are the same and the fertilizer feed amount of each feed mechanism 38 is the same.

  Thereby, in the adjustment area | region of the fertilizer feed amount by the feed amount adjustment mechanism 50 in the standard fertilization state of the fertilizer application apparatus 4, and the adjustment area | region of the fertilizer feed amount by the feed amount adjustment mechanism 50 in the reduced weight fertilization state of the fertilizer application apparatus 4, It is possible to prevent the useless adjustment region where the fertilizer feed amount overlaps. As a result, the adjustment of the fertilizer feed amount by the feed amount adjusting mechanism 50 using the switching between the standard fertilization state and the reduced weight fertilization state of the fertilizer application device 4 can be performed satisfactorily by a wide and wide range of adjustments without waste.

  As shown in FIGS. 3 to 8, 10, and 20 to 22, the traveling vehicle body 1 includes a left and right first support body B <b> 1 that extends from the rear frame 11 and supports the fertilizer application device 4 from below, and a seat frame 12. A second support B2 that extends rearward and supports the fertilizer application device 4 from the front is provided.

  The left and right first support bodies B1 include a support arm 85 made of a round pipe steel material, a first connection member 86 connected to the rear frame 11, a second connection member 87 connected to the fertilizer frame 36, and the like. Each support arm 85 is bent so as to have a first arm portion 85A facing forward and backward, a second arm portion 85B tilting rearwardly, and a third arm portion 85C having a lateral U shape in that order. . And the 1st connection member 86 is welded to the edge part by the side of the 1st arm part. The second connecting member 87 is welded to the end on the third arm portion side. The first connecting member 86 is bent and formed in a U shape that fits around the first arm portion 85A. The second connecting member 87 is bent so as to have a U-shaped longitudinal section. The bottom surface is welded to the third arm portion 85C.

  The second support B2 is configured by bolting a first member 88 connected to the seat frame 12 and a second member 89 connected to the fertilizer application frame 36. Thereby, the accommodation for position adjustment by the difference of a bolt diameter and a hole diameter can be provided between the 1st member 88 and the 2nd member 89. FIG. As a result, for example, compared to the case where the first member 88 and the second member 89 are integrated by welding, it becomes easier to align the respective connection points when assembling the fertilizer application 4 to the traveling vehicle body 1, The assembly | attachment property of the fertilizer application apparatus 4 can be improved.

  The first member 88 includes a front connecting portion 88A that is bolted to the seat frame 12, a rear connecting portion 88B that is bolted to the second member 89, and a reinforcing vertical wall 88C positioned between the connecting portions 88A and 88B. The sheet metal is bent and formed into a shape having a left side wall 88D for reinforcement, a right side wall 88E for reinforcement, and a pedestal part 88F for receiving a driver seat. The front connection portion 88A includes a long hole 88a that absorbs a positional shift in the front-rear direction with respect to the seat frame 12.

  The second member 89 is formed by welding a plurality of sheet metal members or the like to a square pipe steel material facing left and right, and connecting the first member 88 with a bolt on the front side connecting portion 89A and connecting the fertilizer frame 36 with a left and right rear side connecting portion 89B. , A configuration having a mounting portion 89C for storing the operation tool, an insertion portion 89D for storing the shutter, and the like.

  The rear frame 11 is provided with a connecting portion 11B that enables bolt connection with the first connecting member 86 of the first support B1 at the left and right end side portions of the upper frame. Each connecting portion 11 </ b> B is formed in a substantially rectangular shape that allows the first connecting member 86 to be inserted in the front-rear direction.

  The seat frame 12 includes left and right leg portions 12 </ b> A that are bolted to the support portion 11 </ b> A of the rear frame 11. The left leg portion 12 </ b> A includes a connecting portion 12 </ b> B that has a placement surface on which the first member 88 of the second support B <b> 2 is placed and enables bolt connection with the first member 88. For the bolt connection of the first member 88 to the connection portion 12B, a bolt 90 with a handle is used so that the connection and release can be easily performed.

  The fertilizer application frame 36 includes left and right first connecting portions 36 </ b> A that enable pin connection with the second connecting member 87 of the first support B <b> 1 on the main member 42 constituting the rear side thereof. Further, the auxiliary member 43 constituting the front side thereof is provided with left and right second connection portions 36B that enable bolt connection to the rear side connection portion 89B of the second support B2.

  The first support B1 and the second support B2 are connected to the rear frame 11 and the first support B1 is connected to the seat frame 12 in the state where the first support B1 is connected to the seat frame 12. B1 is located below the rear step 16 in a distributed manner on both the left and right sides of the traveling vehicle body 1. In addition, the second support B2 is positioned directly behind the driver seat 15 located at the center of the left and right of the traveling vehicle body 1 above the rear step 16. And each rear side connection part 89B of the 2nd member 89 used as the extended end part B2a of 2nd support body B2 is located above the rear step 16, and is a body back rather than the rear end of the rear step 16. It is located on the side and functions as a support portion that supports the front portion of the fertilizer application device 4. Moreover, the 2nd connection member 87 used as the extension edge part B1a of each 1st support body B1 is located in the rear side of the body rather than each back side connection part 89B of the 2nd member 89, and the rear part of the fertilizer application apparatus 4 is attached. It functions as a support part to support. And in the state which connected fertilizer 4 to each 1st support B1 and 2nd support B2, left 1st support B1 bypasses conveyance wind supply duct 91 and drive shaft 48 of fertilizer 4. Also, the first support B1 on the right side bypasses the conveying wind supply duct 91, the drive shaft 48, and the linkage shaft 69 of the fertilizer application device 4, and supports the left and right ends of the rear portion of the fertilizer application device 4 from below. Moreover, 2nd support body B2 extends back from the seat frame 12, and supports the left-right center location of the front part in the fertilizer applicator 4 from the front. Note that the conveying air supply duct 91 extends rightward from the blower 41 toward each feeding mechanism 38 in order to supply the conveying air from the blower 41 to each feeding mechanism 38.

  With the above configuration, the fertilizer application device 4 is supported in a stable state in which the left and right ends are supported from below by the left and right first supports B1, and the left and right central portions are supported from the front by the second support B2. In a suitable state in which the swinging motion in the left-right direction and the front-rear direction with respect to the traveling vehicle body 1 is suppressed, the traveling vehicle body 1 can be disposed at a position behind the rear step 16. In addition, as a result, the tread area of the rear step 16 used as a step when the seedling is replenished to the seedling stand 31 or the fertilizer is replenished to the hopper 37 performed from the traveling vehicle body side, for example, the rear step 16 is used as the fertilizer 4. It can be made wider compared with the case where it is also used as a mounting table. As a result, the seedling supply to the seedling mount 31 and the fertilizer supply to the hopper 37 performed from the traveling vehicle body side are facilitated.

  Further, by operating the bolt 90 with a handle to release the connection between the seat frame 12 and the second support B2, the fertilizer application device 4 connects the fertilization frame 36 and the left and right first supports B1. With the connecting pin 92 facing left and right as a fulcrum, it can be swung to the rear maintenance position. Thereby, maintenance work, such as cleaning with respect to each feeding mechanism 38 provided in the fertilizer application device 4, can be easily performed.

  Each feeding mechanism 38 includes an upper case 93 that is fixed to the fertilizer application frame 36 and a lower case 94 that swings about a rear fulcrum with respect to the upper case 93. Then, the lower case 94 swings and displaces the fertilizer application device 4 to the rear maintenance position, so that the swing displacement from the connection position connected to the upper case 93 to the maintenance position where the upper case 93 is opened is changed. It is configured to be possible.

  That is, the fertilizer 4 is swung to the maintenance position, and the lower case 94 of each feeding mechanism 38 is swung to the maintenance position, thereby cleaning or replacing the feeding roll 45 or the like built in each feeding mechanism 38. Maintenance work can be easily performed.

  As shown in FIGS. 3 to 5, 7, 8, and 20 to 22, the second support B <b> 2 is displaced to the rear end position by the position adjusting mechanism 24 on the pedestal portion 88 </ b> F of the first member 88. A rubber receiving device 95 that receives the rear end portion of the seat 15 and prevents the driver seat 15 from tilting backward is provided. As a result, the driver seat 15 is tilted rearward due to the driver seat 15 being leaned back by being displaced to the rear end position, thereby causing the driver seat 15 to be backrested. This avoids the possibility of contact with the resin hopper 37.

  As shown in FIGS. 4, 5, 7, 11, 14, and 20 to 22, the fertilizer application device 4 is manually fitted to the right end portion of the drive shaft 48 to manually rotate the drive shaft 48. A detachable operation tool 96 that enables driving is provided. Thereby, without interrupting the transmission with respect to the drive shaft 48, the drive shaft 48 can be rotated by manual operation using the operation tool 96, and the fertilizer 4 can be operated. As a result, it is possible to easily check the amount of fertilization with respect to the rotational speed of the drive shaft 48 in the fertilizer application 4.

  The second support B2 is a storage unit for an operation tool that enables the storage of the operation tool 96 removed from the drive shaft 48 by attaching a clip 97 for holding the operation tool to the mounting portion 89C of the second member 89. 98 is constituted. As a result, it is possible to make it difficult for the operating tool 96 removed from the drive shaft 48 to be lost.

  As shown in FIGS. 3 to 5, FIG. 7, FIG. 8 and FIGS. 20 to 22, the second support B <b> 2 connects a shutter holding holder 99 to the insertion portion 89 </ b> D of the second member 89, thereby The shutter storage unit 100 that enables storage of the two shutters 47 removed from the shutter 4 is configured. Thereby, it can be made hard to invite the loss of the shutter 47 removed from the fertilizer application apparatus 4.

  In addition, this riding rice transplanter is a work notification device (not shown) based on detection from the seedling out sensor of the seedling planting device 3 and the fertilizer outage sensor or fertilizer clogging sensor of the fertilizer application device 4. The electronic control unit 101 for work which performs the control operation etc. which operate | move is provided. The second support B <b> 2 includes bolt connection portions 89 </ b> Ba for supporting the electronic control unit in the left and right rear connection portions 89 </ b> B of the second member 89. The left and right bolt connecting portions 89Ba constitute an electronic control unit support portion 102 that supports the work electronic control unit 101. Thereby, compared with the case where the exclusive support member which comprises the support part 102 for electronic control units is provided, the simplification of a structure by reduction of a number of parts can be achieved.

  The second member 89 of the second support B2 includes left and right vertical wall portions 89E integrally formed with the left and right rear connection portions 89B. The working electronic control unit 101 supported by the electronic control unit support portion 102 is positioned between the left and right vertical wall portions 89E. Thereby, the contact of the other object with respect to the electronic control unit 101 for work can be suppressed.

  As shown in FIGS. 7, 10 and 12 to 14, the one-way clutch 71 for preventing reverse rotation includes a connecting portion 71 </ b> B for the main member 42 of the fertilizer frame 36 on the outer race 71 </ b> A. The main member 42 of the fertilizer application frame 36 includes a connecting portion 42 </ b> A that enables bolt connection with the connecting portion 71 </ b> B of the one-way clutch 71. Two stepped bolts 103, two washers 104, and two spring washers 105 are used to connect the connecting portion 42 </ b> A of the main member 42 and the connecting portion 71 </ b> B of the one-way clutch 71. Then, the hole diameter in the connecting portion 71B of the one-way clutch 71 is made larger than the large-diameter portion 103A of the stepped bolt 103, and the connecting portion 71B of the one-way clutch 71 is connected to the connecting portion 42A of the main member 42 and the stepped bolt 103. It is configured so as to be sandwiched and held via a washer 104 and a spring washer 105 between the head 103 </ b> B.

  With this configuration, it is possible to absorb an assembly error that occurs between the coupling portion 42A of the main member 42 and the coupling portion 71B of the one-way clutch 71 due to the assembly error in the fertilizer application device 4 at those bolt connection locations. . Accordingly, the one-way clutch 71 for preventing reverse rotation is easily and reliably attached to the connecting portion 42A of the main member 42 in a proper posture with respect to the drive shaft 48 and in a stable state with respect to the connecting portion 42A of the main member 42. Can be assembled. As a result of this assembly, the assembly of the one-way clutch 71 for preventing reverse rotation with respect to the main member 42 becomes unstable due to an assembly error occurring between the connecting portions 42A and 71B, and the one-way for preventing reverse rotation with respect to the drive shaft 48. It is possible to prevent the occurrence of inconvenience that the assembly posture of the clutch 71 varies. As a result, it is possible to prevent the occurrence of inconvenience that the driving torque of the driving shaft 48 changes due to the fluctuation and the fertilizer feed amount by each feed mechanism 38 becomes unstable.

  That is, with the above configuration, the fertilizer feed amount by each feed mechanism 38 can be stabilized regardless of the assembly error in the fertilizer application device 4, and fertilization by the fertilizer application device 4 can be performed satisfactorily.

  [Another embodiment]

[1] The paddy field machine may be a rice transplanter or a direct sowing machine provided with at least one of the fertilizer application apparatus 4, the chemical spraying apparatus, and the agricultural supply apparatus A such as a direct sowing apparatus.

[2] The agricultural supply device A may be configured without the blower 41.

[3] The number of working strips of the agricultural supply device A can be variously changed. For example, the agricultural supply device A may be configured for 5 strips, 6 strips, or 8 strips.

[4] The first support B1 may be configured to extend from the T / M case 10 or the like in the body frame 6. Further, the second support B2 may be configured to extend from the rear frame 11 or the like in the vehicle body frame 6.

[5] The configuration and quantity of the first support B1 can be variously changed. For example, the first support B1 may have a configuration in which the support arm 85 does not include the laterally U-shaped third arm portion 85C. Further, the support arm 85 may include a third arm portion 85C in a vertical posture. And as a quantity of 1st support body B1, 1 or 3 or more may be sufficient.

[6] The configuration and quantity of the second support B2 can be variously changed. For example, the second support B2 may be configured by welding the first member 88 connected to the seat frame 12 and the second member 89 connected to the fertilization frame 36. Further, at least one of the storage unit 98 for the operation tool, the storage unit 100 for the shutter, and the support unit 102 for the electronic control unit may be provided. Further, the second support B2 may be provided at a position off the back of the driver seat 15. The number of second supports B2 may be two or more.

[7] The extended end B2a of the second support B2 or both the extended end B2a of the second support B2 and the extended end B1a of the first support B1 You may comprise so that it may be located in the aircraft rear side rather than a rear end. Further, only the extended end B2a of the second support B2 is positioned above the rear step 16, and the extended end B1a of the first support B1 is positioned below the rear step 16. May be.

  The present invention is applied to a paddy field work machine provided with at least one of a fertilizer application device, a chemical spraying device, and an agricultural supply device such as a direct sowing device on the rear side of the driver's seat in the rear part of the traveling vehicle body. be able to.

DESCRIPTION OF SYMBOLS 1 Traveling vehicle body 6 Body frame 11 Rear frame 12 Seat frame 15 Driving seat 16 Rear step 24 Position adjustment mechanism 46 Supply path 47 Shutter 48 Drive shaft 71 One-way clutch 72 One-way clutch 73 One-way clutch 87 Connection part 89B Connection part 95 Stopper 96 Operation tool 98 Storage part for operation tool 100 Storage part for shutter 101 Electronic control unit 102 Support part for electronic control unit A Agricultural supply device B1 First support B2 Second support B1a Extension end (support part)
B2a Extension end (support)

Claims (10)

A driving seat and a rear step are provided at the rear of the traveling vehicle body, and an agricultural supply device is provided on the rear side of the vehicle body of the driving seat at the rear of the traveling vehicle body,
A first support that extends from a vehicle body frame of the traveling vehicle body and supports the agricultural supply device from below; and a second support that extends backward from the vehicle body frame and supports the agricultural supply device from the front. Paddy field machine. The vehicle body frame includes a rear frame that supports the rear step, and a seat frame that supports the driver's seat,
The paddy field work machine according to claim 1, wherein the first support body extends from the rear frame, and the second support body extends rearward from the seat frame. The extended end portion of the first support body is located on the rear side of the machine body from the extended end portion of the second support body, and functions as a support portion that supports the rear portion of the agricultural supply device,
The extension end portion of the second support body is located on the rear side of the machine body from the rear end of the rear step, and functions as a support portion that supports the front portion of the agricultural supply device. 2. Paddy field machine according to 2.   The extension end of the first support and the extension end of the second support are located above the rear step and function as a connecting part that connects to the agricultural supply device. The paddy field machine according to any one of Items 1 to 3.   The paddy field work machine according to any one of claims 1 to 4, wherein the first support body is disposed on both right and left side portions of the traveling vehicle body.   The paddy field work machine according to any one of claims 1 to 5, wherein the second support body is disposed immediately behind the driver seat. The traveling vehicle body includes a position adjustment mechanism that enables position adjustment of the driver seat in the longitudinal direction of the fuselage,
The said 2nd support body is equipped with the catch which receives the rear-end part of the said driver's seat displaced to the body rear side, and prevents the backward tilt of the said driver's seat. Paddy field work machine as described in one. The agricultural supply apparatus includes a drive shaft that is rotated by power from the traveling vehicle body via a one-way clutch, and a detachable operation tool that enables manual rotation drive of the drive shaft,
The said 2nd support body is a paddy field machine as described in any one of Claims 1-7 provided with the storage part for operation tools which enables storage of the said operation tool. The agricultural supply apparatus includes a plurality of supply paths, and a shutter that is detachable in a detached state in which a predetermined supply path is opened and in a mounted state in which the predetermined supply path is closed,
The paddy field work machine according to any one of claims 1 to 8, wherein the second support body includes a shutter storage unit that enables storage of the shutter.   The said 2nd support body is a paddy field machine as described in any one of Claims 1-9 provided with the support part for electronic control units which supports an electronic control unit.

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