JP5547996B2 - Agricultural granular material supply equipment - Google Patents

Description

  The present invention relates to an agricultural granular material supply apparatus that supplies agricultural granular materials such as fertilizers and seedlings to a rice field.

  As such an agricultural granular material supply apparatus, for example, a fertilizer application apparatus provided in a rice transplanter is known (see Patent Document 1). This fertilizer applicator is provided with a feeding case in which a feeding body for feeding fertilizer from a storage section (hopper) is provided, and a drain for discharging agricultural granular material (fertilizer) from the storage section is provided below the feeding case. An exit is formed. This discharge port is not used in the normal operation of supplying fertilizer to the rice field, but is used when recovering the fertilizer remaining in the storage section after the normal operation is completed. A shutter (valve element) is provided at the discharge port, and the discharge port can be opened and closed by rotating the shutter around the horizontal axis by an external operation. Agricultural particulate matter discharged from the discharge port is sent to a collection pipe, conveyed to a collection port at the end of the collection pipe by wind from a separately provided blower, and collected in a bag or container at the collection port.

Japanese Patent No. 4107588 (see FIG. 6)

  In the above collection operation, when there are many agricultural granular materials remaining in the storage part with respect to the capacity of the bag or container, it is necessary to replace the bag or the like during the collection operation. At the time of replacement, the shutter is closed in order to temporarily stop the agricultural granular material from being discharged from the outlet. However, if an attempt is made to close the shutter while agricultural particulates remain in the reservoir, the agricultural particulates flow into the gap between the free end of the shutter and the lower part of the discharge port until the shutter is completely closed. Therefore, the shutter may be closed in a state where the agricultural granular material is bitten. If the shutter is closed with the agricultural granular material bitten in, the agricultural granular material will flow out from the gap between the free end of the shutter and the lower part of the discharge port caused by the biting. There is room for improvement in this respect because there is a risk of causing a load.

  The present invention has been made in view of the above problems, and provides an agricultural granular material supply device that suppresses biting of agricultural granular material by the shutter even when the shutter is closed in a state where agricultural granular material remains in the storage section. The purpose is to provide.

1st characteristic structure of the agricultural granular material supply apparatus which concerns on this invention is the agricultural part of the storage part which stores the agricultural granular material, the feeding case with which the lower part of the said storage part is equipped, the interior of the said feeding case, and the said storage part A feeding body that feeds out the granular material, a discharge port that is formed in the vicinity of the top of the feeding body and discharges the agricultural granular material of the storage unit, and a rotation that rotates around a horizontal axis that is provided above the discharge port. A shutter having an end portion and a free end portion opposite to the rotating end portion, wherein the shutter has a closed state in which the free end portion contacts a lower portion of the discharge port, and the free end portion Is configured to be switchable between the lower end of the discharge port and an open state that is separated outwardly from the lower portion, and the rotating end portion and the free end portion are arranged between the rotating end portion and the free end portion. protruding from the open state than the imaginary line connecting the door to the pivoting direction to the closed state And lies in the projecting portion formed over the entire width of the shutter is provided.

  According to the first characteristic configuration, since there is a protruding portion that protrudes in the rotating direction from the open state to the closed state with respect to the imaginary line connecting the rotating end portion and the free end portion of the shutter, the shutter is opened. When rotating from a closed state to a closed state, the protruding part functions like an umbrella with respect to the free end part, or functions so as to push away the agricultural granular material ahead of the free end part. Agricultural granular material can be prevented from flowing directly between the end portion and the lower portion of the discharge port. As a result, even if the shutter is closed in a state where the agricultural granular material remains in the storage portion, the agricultural granular material can be prevented from being caught by the shutter. In addition, the presence of the protruding portion suppresses the agricultural granular material from flowing into the discharge port vigorously, so that the resistance when closing the shutter is smaller than when the shutter is configured in a flat plate shape.

According to the 1st characteristic composition, since the above-mentioned effect can be enjoyed over the full width of a shutter, the effect of resistance reduction when closing a granular material for agriculture and closing a shutter increases.

The second characteristic configuration is configured such that the shutter is in the closed state when the free end is in line contact with a lower portion of the discharge port in a direction along the horizontal axis. It is in.

According to the second feature configuration , since the free end of the shutter and the lower part of the discharge port are in line contact, the possibility of biting agricultural granular materials when closing the shutter can be reduced compared to the case of surface contact. it can. Further, even if the agricultural granular material is bitten, if it is in line contact, the effect that the biting agricultural granular material is easily released can be obtained.

In the third characteristic configuration , a lower portion of the discharge port is formed across a first bottom, a second bottom that is lower than the first bottom and located outside, and the first bottom and the second bottom. And the free end portion is configured to come into contact with the vertical wall portion from the second bottom side so that the shutter is in the closed state.

Since the free end portion of the shutter rotates and comes into contact with the lower part of the discharge port to be in a closed state, the shutter moves substantially in the horizontal direction immediately before the closed state. Accordingly, as in the third feature configuration , if the free end portion of the shutter is configured to contact the vertical wall portion, the shutter can be reliably and easily closed.

The fourth characteristic configuration is that the first bottom portion and the second bottom portion are inclined surfaces that become lower toward the outside, and the second bottom portion is inclined more steeply than the first bottom portion. is there.

If the inclined surface of the 2nd bottom part outside the 1st bottom part is constituted suddenly like the 4th characteristic composition , since the discharge speed of agricultural granular material will become large outside rather than the inside, discharge of agricultural particulates will be carried out. It becomes smooth, and clogging at the discharge port can be suppressed.

A fifth characteristic configuration is that a cover portion that protrudes inward from the upper portion of the discharge port and covers the rotating end portion from above is provided.

According to the 5th characteristic structure , since it can avoid that the agricultural granular material collides with a rotation end part, it can prevent that an agricultural granular material is pinched | interposed between a shutter and the discharge port upper part at the time of rotation of a shutter. it can.

1 is an overall side view of a rice transplanter according to an embodiment of the present invention. 1 is an overall plan view of a rice transplanter according to an embodiment of the present invention. It is a front view which shows a fertilizer application apparatus. It is the schematic which shows the flow of the conveyance wind in a working state. It is the schematic which shows the flow of the conveyance wind in a collection | recovery state. It is sectional drawing which shows the detail of a feeding mechanism. It is a side view which shows operation | movement of the operation lever which opens and closes a shutter. It is a top view which shows the discharge port when a shutter is an open state. It is a perspective view which shows the shape of a shutter. It is an enlarged plan view which shows operation | movement of the connection shutter provided in the connection duct. It is sectional drawing in XI-XI of FIG. It is an enlarged plan view which shows operation | movement of the branch shutter provided in the ventilation duct. It is a front view which shows the mounting base of use condition. It is an enlarged side view which shows the mounting base in a folded state. It is an enlarged front view which shows the mounting base of a folding state.

  Hereinafter, a fertilizer application of a rice transplanter will be described as an example of an embodiment of an agricultural granular material supply apparatus according to the present invention.

〔overall structure〕
As shown in FIGS. 1 and 2, the rice transplanter according to the present embodiment includes a control unit 11 and a driver's seat 12 equipped with a steering handle 10 and the like on a driver unit step 18 of the machine body 1. The airframe 1 includes a pair of left and right front wheels 14 and a rear wheel 15 that can be steered. An engine 16 and a transmission case 17 are disposed on the front side of the body frame 13. A fuel tank 61 is provided at the rear of the mission case 17 so that fuel can be replenished from a fuel filler opening 61a.

  A front auxiliary step 19 that forms a continuous step surface with the operation unit step 18 is provided on both outer sides of the operation unit step 18, and a reserve seedling table 22 is installed on both outer sides thereof. In addition, a rear auxiliary step 20 configured so that the rear portion is raised is disposed behind the front auxiliary step 19. The front auxiliary step 19 and the rear auxiliary step 20 are supported by a step support frame 23.

  The fertilizer application device 2 (agricultural granule supply device) for supplying fertilizer (agricultural granule) is disposed behind the driver's seat 12 and above the rear auxiliary step 20. A link mechanism 21 having a lift cylinder 21 a is connected to the rear surface of the machine body 1 so as to be movable up and down, and a seedling planting device 3 is mounted on the rear end side of the link mechanism 21. The fertilizer fed from the feeding mechanism 32 of the fertilizer application device 2 is supplied to the rice field from the groove producing device 81 of the seedling planting device 3 through the hose 82.

[Seedling planting equipment]
As shown in FIG.1 and FIG.2, in this embodiment, the seedling planting apparatus 3 is comprised by 8 row planting. Four planting transmission cases 83, a rotation case 84 supported rotatably on the left and right sides of the planting transmission case 83, planting claws 85 provided at both ends of the rotation case 84, five grounding floats 86, And a seedling stand 87 or the like. In the vicinity of the lateral side of the seedling planting location by each planting claw 85, one groover 81 attached to the grounding float 86 is arranged, and a hose 82 is connected to the upper end portion thereof. The fertilizer fed from the feeding mechanism 32 is supplied to the rice field from the grooving device 81 through the hose 82.

[Fertilizer]
As shown in FIG. 3, the fertilizer application device 2 includes a storage unit 31 that stores fertilizer and four feeding mechanisms 32 that are disposed below the storage unit 31. The storage unit 31 is a transparent resin container for storing fertilizer, and is fixed to the support frame 33. A lid 31 a that can be opened and closed is provided at the upper part of the storage unit 31, and is configured so that fertilizer can be poured into the storage unit 31 from above. The storage unit 31 has a substantially rectangular parallelepiped shape having a long side along the width direction of the body 1 and is partitioned into four rooms. Feeding mechanisms 32 are arranged at four positions at positions corresponding to these rooms, and fertilizer is sent from the storage unit 31 to the feeding mechanism 32.

  As shown in FIG. 6, the feeding mechanism 32 includes a feeding case 34 and a feeding body 37. The feeding case 34 includes an upper feeding case 35 and a lower feeding case 36 that are configured to be separable, and a feeding body 37 is disposed at the boundary between these cases. The upper feeding case 35 and the lower feeding case 36 are connected by engaging engagement holes 35f formed in the upper feeding case 35 and engagement pieces 36c formed in the lower feeding case 36. And open so that the front side (right side in FIG. 6) of the lower feeding case 36 is lowered. In order to open the feeding case 34, an opening / closing lever 49 (see FIG. 7) rotatably attached to the lower feeding case 36 is operated, and the engagement recess 49 a of the opening / closing lever 49 and the upper feeding case 35 are moved. What is necessary is just to cancel | release engagement with the engagement convex part 35g.

  As shown in FIG. 6, the upper feeding case 35 is connected to the lower portion of the storage portion 31, and the fertilizer stored in the storage portion 31 is configured to be able to flow into the upper feeding case 35. A plurality of recesses 37a for entering fertilizer are formed on the outer periphery of the feeding body 37 along the circumferential direction. When the feeding shaft 65 rotates in the clockwise direction in FIG. 6, the fertilizer in the recesses 37a is transferred to the lower feeding case 36. Sent. At this time, since the fertilizer protruding from the recess 37a is cut by the brush 38 and not sent to the lower feeding case 36, a certain amount of fertilizer entering the recess 37a can be fed. The feeding case 34 is made of a transparent material made of resin, and the inside can be visually recognized from the outside.

  A blower portion 36 a provided on the front side (right side in FIG. 6) of the lower end portion of the lower feed case 36 is connected to a blower duct 101 which will be described later, and sends the conveying air from the blower duct 101 to the lower feed case 36. Moreover, the conveyance part 36b provided in the rear side (left side of FIG. 6) of the lower end part of the lower extension case 36 is connected with the hose 82 for conveying the fertilizer to the grooving device 81 of the seedling planting device 3. . By comprising in this way, the fertilizer sent to the lower delivery case 36 from the upper delivery case 35 via the delivery body 37 is sent to the hose 82 without a stagnation by the conveying wind from the blower duct 101, and the grooving device 81 Is supplied to Tanabe.

An introduction member 108 is attached to a location where the blower 36a of the feed mechanism 32 and the blower duct 101 are connected. The introduction member 108 includes a bowl-shaped introduction portion 108a that protrudes into the air duct 101 (see FIGS. 4 and 5). The introduction part 108a is arranged so that the opening is directed to the upstream side of the air duct 101, and is configured so that the conveying air can easily flow from the air duct 101 into the air blowing part 36a.

  A discharge port 35a is provided on the rear side of the upper feeding case 35 (left side in FIG. 6), and a shutter 39 is swingably attached around a horizontal axis 40 (horizontal axis). The discharge port 35 a is connected to the connection portion 102 a of the discharge duct 102. During normal rice transplanting, the shutter 39 is maintained in the closed state indicated by the solid line in FIG. 6, and the fertilizer is not discharged into the discharge duct 102 but is fed to the lower feeding case 36 through the feeding body 37. On the other hand, when recovering fertilizer from the storage unit 31 after completion of rice transplanting work, etc., if the shutter 39 is operated to the open state shown by the dotted line in FIG. 6, the fertilizer remaining in the storage unit 31 is discharged from the discharge port 35a. 102 is discharged. At this time, the step portion 102b formed in the connecting portion 102a so that the side of the discharge duct 102 is lowered makes it easy for the fertilizer to be discharged and prevents the fertilizer from flowing backward from the discharge duct 102 to the upper feeding case 35 by the conveying wind. To do. The planar arrangement of the air duct 101 and the discharge duct 102 and the switching operation of the shutter 39 will be described later.

  As shown in FIG. 6, the shutter 39 has a rotating end 39a having a horizontal axis 40 and a free end 39b which is an end opposite to the rotating end 39a. A cover part 35e is formed on the upper part of the rotating end part 39a so as to cover a part of the upper feeding case 35 so as to cover the rotating end part 39a. The cover 35e can avoid the fertilizer flowing from the storage unit 31 from colliding with the rotation end 39a, so that the fertilizer is sandwiched between the rotation end 39a and the cover 35e when the shutter 39 rotates. Thus, the shutter 39 can be prevented from malfunctioning.

  A first bottom portion 35b, a second bottom portion 35c, and a vertical wall portion 35d are formed below the discharge port 35a. The second bottom portion 35c is located lower than and outside the first bottom portion 35b, and a vertical wall portion 35d is formed across the first bottom portion 35b and the second bottom portion 35c. The free end portion 39b of the shutter 39 comes into contact with the vertical wall portion 35d from the second bottom portion 35c side (left side in FIG. 6), so that the shutter 39 is closed. Since the free end portion 39b of the shutter 39 is moved in the substantially horizontal direction immediately before the shutter 39 is closed, the moving direction of the free end portion 39b and the vertical wall portion 35d are almost perpendicular to each other, so that the shutter 39 is securely and securely moved. It can be easily closed. Furthermore, the first bottom 35b and the second bottom 35c are inclined surfaces that become lower toward the outside, and the second bottom 35c is inclined more steeply than the first bottom 35b. Therefore, when the fertilizer is discharged from the upper feed case 35 toward the discharge duct 102, the fertilizer discharge speed increases toward the discharge duct 102, so that the fertilizer can be smoothly discharged without being clogged.

  As shown in FIGS. 6 and 9, the shutter 39 is formed with a protruding portion 39c that protrudes in the rotating direction from the open state to the closed state with respect to the imaginary line connecting the rotating end portion 39a and the free end portion 39b. . When the shutter 39 is rotated from the open state to the closed state by the protruding portion 39c, the upper surface 39d of the protruding portion functions like an umbrella with respect to the free end portion 39b, or the protruding portion 39c precedes the free end portion 39b. Then, by functioning to push away the fertilizer, it is possible to prevent the fertilizer from flowing directly between the free end 39b and the first bottom 35b, the second bottom 35c, or the vertical wall 35d. As a result, even if the shutter 39 is closed in a state where the fertilizer remains in the storage unit 31, the fertilizer biting by the shutter 39 can be suppressed. Further, since the fertilizer is prevented from flowing into the discharge port 35a vigorously due to the presence of the projecting portion 39c, the resistance when closing the shutter 39 is reduced as compared with the case where the shutter 39 is configured in a flat plate shape, for example.

  As shown in FIG. 9, since the protrusion 39 c is formed over the entire width of the shutter 39, effects such as suppression of fertilizer biting and reduction in resistance when closing the shutter can be obtained over the entire shutter 39. . Further, if the free end portion 39b is formed at an acute angle and the free end portion 39b and the vertical wall portion 35d are closed in a line contact state, fertilizer can be bitten when the shutter 39 is closed. Can be reduced. Moreover, even if it fertilizes fertilizer, if it is line contact, the effect that the fertilizer which was bitten will be easy to be released is acquired.

  A rectangular hole 39e for inserting the horizontal shaft 40 is provided inside the rotating end 39a, and openings 39f, 39g, and 39h are formed in a part of the rectangular hole 39e. Of these, the openings 39f and 39h are formed at both ends in the width direction of the shutter 39. When the horizontal shaft 40 is inserted into the rectangular hole 39e, the opening 39f or 39h can be easily inserted. . Further, since the contact area between the horizontal shaft 40 and the rectangular hole 39e is reduced by the openings 39f, 39g, 39h, the frictional force at the time of insertion is reduced and the insertion becomes easy.

[Drive / Transmission mechanism]
A drive / transmission mechanism that transmits power to the feeding mechanism 32 to drive it will be described. The power for operating the feeding mechanism 32 is transmitted from a transmission shaft 51 extending rearward from the mission case 17 shown in FIG. As shown in FIG. 3, the transmission shaft 51 and the rotary arm 52 are disposed at the center of the left and right sides of the body 1 and are disposed between the left and right body frames 13. A rotating arm 52 is connected to the transmission shaft 51, and the connecting rod 53 is connected to an eccentric position of the rotating arm 52 so as to extend upward. With such a configuration, when the rotary arm 52 is rotationally driven by the rotation of the transmission shaft 51, the linkage rod 53 performs a reciprocating motion in the vertical direction. The vertical reciprocating motion of the linkage rod 53 is input to an adjustment mechanism 70 that adjusts the fertilizer feed amount in the feed mechanism 32 via a linkage shaft (not shown). The power that has passed through the adjustment mechanism 70 is transmitted to the feed shaft 65 (see FIG. 6) via the drive rod 59, the drive shaft 62, a transmission gear (not shown), etc., and drives the feed mechanism 32.

[Winding / conveying means]
The conveying wind generating means and conveying means used for supplying or collecting fertilizer will be described. As shown in FIG. 1, the electric blower 104 serving as a wind generating means is disposed below the driver's seat 12. Further, as shown in FIG. 2, the intake port 105 a of the introduction duct 105 for introducing outside air is disposed in the vicinity of the engine 16 and behind the muffler 25. If it arrange | positions in this way, since the heat | fever air from the engine 16 and the exhaust heat from the muffler 25 will be attracted | sucked and the temperature of conveyance wind will rise, manure becomes easy to dry with conveyance wind. As a result, the effect of promoting the transport of fertilizer can be expected.

  As shown in FIGS. 4 and 5, the transport air introduced from the introduction duct 105 is transported to the blower duct 101 by the electric blower 104. The air duct 101 includes a right air duct 101a, a left air duct 101b, and a branch duct 101c, and is disposed on the front side (lower side in FIGS. 4 and 5) of the feeding mechanism 32. The right and left air ducts 101a and 101b are connected to the branch duct 101c, and the feeding mechanisms 32 are connected to the right and left air ducts 101a and 101b. The branch duct 101c is provided with a branch shutter 106 capable of switching between permitting and blocking of the inflow of the conveyance air from the branch duct 101c to the right blower duct 101a.

  The discharge duct 102 used when collecting fertilizer is disposed on the rear side (the upper side in FIGS. 4 and 5) of the feeding mechanism 32 and is connected to each feeding mechanism 32. A recovery port 102c for recovering the fertilizer is provided at the right end of the discharge duct 102 (left side in FIGS. 4 and 5). The blower duct 101 and the discharge duct 102 are connected by a U-shaped connecting duct 103 in a plan view at the left end of each duct (the right side in FIGS. 4 and 5). The connection duct 103 is provided with a connection shutter 107, which can switch between permitting and blocking of the inflow of the conveying air.

  As shown in FIGS. 4 and 5, the switching lever 26 is provided at the right end of the switching shaft 27 (the left side in FIGS. 4 and 5), and the positions of the switching lever 26 and the recovery port 102c are close to each other. The switch lever 26 can be operated while confirming the state of fertilizer collection. Four switching arms 28 and rotating arms 41 and 45 are fixed to the switching shaft 27. When the switching shaft 27 is rotated by operating the switching lever 26, the four shutters 39, the branch shutter 106 and the connection are connected. The shutter 107 can be opened and closed simultaneously.

  As shown in FIG. 7, a switching arm 28 is fixed to one end of the switching lever 26, a spring 24 is provided between the switching lever 26 and the support frame 33, and the switching arm 28 and the switching member 30 are connected to each other. A spring rod 29 is provided between them. When the switching lever 26 is operated from the working position indicated by the solid line to the recovery position indicated by the dotted line, the switching arm 28 is rotated to the position indicated by the dotted line, and the spring rod 29 connected to the switching arm 28 is pushed in, so that the switching member 30 is moved. Rotate.

  As shown in FIG. 8, since the horizontal axis 40 that is the rotation axis of the shutter 39 is fixed to the switching member 30, the shutter 39 is opened in conjunction with the rotation of the switching member 30. The urging force of the spring 24 is always applied to the switching lever 26. When the switching lever 26 is between the collection position and the work position, either the collection position or the work position is selected by the urging force. Are configured to be selected.

  Next, the operation of the connecting shutter 107 will be described with reference to FIG. When the switching lever 26 is operated to the working position, the rotating arm 45 is rotated by the rotation of the switching shaft 27, and the operating rod 46 connected to the rotating arm 45 is moved from the solid line to the position indicated by the dotted line. Then, the operation arm 47 connected to the operation rod 46 rotates about the rotation shaft 47a, and the connection shutter 107 fixed to the rotation shaft 47a enters a closed state indicated by a dotted line.

  Similarly, the operation of the branch shutter 106 will be described with reference to FIG. When the switching lever 26 is operated to the recovery position, the rotation arm 41 is rotated by the rotation of the switching shaft 27, and the operation rod 42 connected to the rotation arm 41 is moved from the solid line to the position indicated by the dotted line. Then, the operation arm 43 connected to the operation rod 42 rotates about the rotation shaft 43a, and the branch shutter 106 fixed to the rotation shaft 43a enters a closed state indicated by a dotted line.

  At the time of rice transplanting work (working state), the switching lever 26 is maintained at the working position, and as shown in FIG. 4, the shutter 39 is closed, the branch shutter 106 is opened, and the connecting shutter 107 is closed. . Then, although the conveyance wind from the electric blower 104 is sent to the right side air duct 101a and the left side air duct 101b, it is not sent to the discharge duct 102 by the connecting shutter 107. For this reason, a conveyance wind is sent to the feeding mechanism 32 from the ventilation duct 101, and is utilized in order to accelerate | stimulate the fertilizer supply to a rice field.

On the other hand, at the time of fertilizer recovery (recovery state), the switching lever 26 is maintained in the open position, and as shown in FIG. 5, the shutter 39 is open, the branch shutter 106 is closed, and the connecting shutter 107 is open. And Then, the conveyance air from the electric blower 104 is not sent to the right side air duct 101a, but is sent only to the left side air duct 101b. Since the connecting shutter 107 is open, the conveying air sent to the left air blowing duct 101 b is sent to the discharge duct 102 via the connecting duct 103. Further, since the shutter 39 is open, the fertilizer is discharged from the feeding mechanism 32 to the discharge duct 102. As a result, fertilizer is discharged to the discharge duct 102 is carried by the carrier air to the times Osamukuchi 102c, it can be easily performed manure collection.

  As shown in FIG. 8, a projection 102d having a triangular shape in plan view is formed on a connection portion 102a that connects the discharge duct 102 to the upper feed case 35. The protrusion 102d is formed on the side surface of the connecting portion 102a which is the downstream side in the flow of the conveying air, and the conveying air flows into the upper feeding case 35, or the conveying air diffuses in the connecting portion 102a to create a vortex. Is prevented.

As shown in FIG. 11, the connection duct 103 has a trapezoidal cross section. If the connecting duct 103 is configured so that the cross section has a trapezoidal shape, the wind pressure distribution of the conveying air flowing inside the connecting duct 103 becomes a distribution that increases near the outside of the cross section (right side in FIG. 11). For this reason, the conveyance wind in the connection duct 103 in the recovered state and the discharge duct 102 in the vicinity of the connection duct 103 becomes dominant in the vicinity of the outer side of the cross section as shown by the arrows in FIG. For this reason, it becomes difficult for the conveyance wind in the discharge duct 102 to flow into the delivery mechanism 32 side, and the discharge of the fertilizer from the discharge port 35a is made smooth. In addition, you may comprise not only the trapezoidal cross section as shown in FIG. 11 but a semicircular cross section.

(Mounting table)
As shown in FIGS. 1 and 2, a mounting table 90 that is supported by a support frame 91 and configured to be foldable is provided on the right side of the machine body 1. Since the mounting table 90 is located between the fuel supply port 61a of the fuel tank 61 and the recovery port 102c of the discharge duct 102, when the fuel tank 61 is replenished with fuel, it is used as a place where the fuel container is temporarily placed or discharged. When collecting fertilizer from the duct 102, it can be used as a place to place a collection container or bag.

  Details of the mounting structure of the mounting table 90 are shown in FIGS. A bracket 93 made of two opposing plate-like members is fixed so as to extend to the lower side of the step support frame 23, and is disposed so that the stop members 93 a and 93 b and the shaft member 94 a are interposed between the brackets 93. Is done. A support frame 91 that supports the mounting table 90 is fixed to a rotating member 94, and the rotating member 94 is rotatably attached to the bracket 93 by a shaft member 94a. A spring 92 is provided between the support frame 91 and the bracket 93. With the above configuration, the mounting table 90 rotates integrally with the support frame 91 and the rotation member 94.

  As shown in FIG. 13, when the mounting table 90 is in a use state, that is, in an open state, the rotating member 94 comes into contact with the stop member 93a. In this way, the mounting table 90 can be held in the use state by the rotation member 94 coming into contact with the stop member 93a in the use state. On the other hand, when the mounting table 90 is folded, the support frame 91 contacts the stop member 93b. With this configuration, it is possible to prevent the mounting table 90 and the support frame 91 from coming into contact with the rear auxiliary step 20 and the step support frame 23 during folding. Due to the tensile force of the spring 92, the mounting table 90 is configured to be stably held in either the open state of FIG. 13 or the closed state of FIG.

[Other Embodiments]
In the above embodiment, the discharge port 35a is formed in the upper feed case 35. However, the discharge port 35a may be formed in the storage portion 31, or the storage portion 31 and the feed case 34 may be configured integrally. Also good. Further, the shape of the protruding portion 39c of the shutter 39 is not limited to a triangular shape in a cross-sectional view, but may be another shape such as an arc shape in the cross-sectional view as long as it functions as an umbrella with respect to the free end 39b. There may be. Further, instead of forming the free end portion 39b at an acute angle, a protrusion having an acute end formed at the vertical wall portion 35d is provided so that the free end portion 39b and the vertical wall portion 35d are in line contact with each other. It may be configured. Furthermore, it is good also as a structure which provides the protrusion part 39c as another member, and attaches this to the shutter 39. FIG.

  The present invention is not limited to a fertilizer application of a rice transplanter, and can be applied to other agricultural granular material supply devices that supply agricultural granular materials such as drugs and seedlings to the rice field.

2 Fertilizer application (agricultural granular material supply device)
31 storage part 34 feeding case 35a discharge port 35b first bottom part 35c second bottom part 35d vertical wall part 35e covering part 37 feeding body 39 shutter 39a rotating end part 39b free end part 39c projecting part 40 horizontal axis (horizontal axis)

Claims (5)

A reservoir for storing agricultural particulates;
A feeding case provided at a lower portion of the storage unit;
A feeding body that is housed in the feeding case and feeds the agricultural granular material of the storage section;
Formed in the vicinity of the upper part of the feeding body, and a discharge port for discharging the agricultural granular material of the storage section;
A shutter having a rotating end that rotates about a horizontal axis provided at an upper portion of the discharge port and a free end opposite to the rotating end;
The shutter is configured to be switchable between a closed state in which the free end portion is in contact with a lower portion of the discharge port and an open state in which the free end portion is spaced outward from the lower portion of the discharge port,
Wherein a portion between the pivot end and said free end portion, protruding from the open state of the virtual line connecting the said free end and said pivot end portion in the rotational direction to the closed state, And the granular material supply apparatus for agriculture provided with the protrusion part formed over the full width of the said shutter . 2. The agricultural product according to claim 1 , wherein the shutter is in the closed state when the free end is in line contact with a lower portion of the discharge port in a direction along the horizontal axis. Granule supply device. A lower portion of the discharge port includes a first bottom portion, a second bottom portion that is lower and lower than the first bottom portion, and a vertical wall portion formed across the first bottom portion and the second bottom portion. Prepared,
The agricultural granular material supply device according to claim 1 or 2 , wherein the shutter is in the closed state when the free end portion contacts the vertical wall portion from the second bottom side. 4. The agricultural grain according to claim 3 , wherein the first bottom portion and the second bottom portion are inclined surfaces that become lower toward the outside, and the inclination of the second bottom portion is steeper than the inclination of the first bottom portion. Supply device. The agricultural granular material supply apparatus according to any one of claims 1 to 4 , further comprising a cover part that protrudes inward from an upper part of the discharge port and covers the rotating end part from above.

Images