JP5395285B2 - Fertilizer - Google Patents

Description

  The present invention relates to a technique for improving the efficiency of discharging and cleaning fertilizer in a hopper of a fertilizer application apparatus.

  2. Description of the Related Art Conventionally, in a fertilizer that is provided in a work machine such as a riding rice transplanter and fertilizes in a field, a technique for horizontally fitting a coarse mesh body in a hopper of the fertilizer is known (for example, a patent) Reference 1). With this configuration, it is possible to prevent the fertilizer lump solidified by absorbing moisture from flowing down to the feeding mechanism and to prevent the flow of fertilizer from being hindered by the bridge phenomenon.

  However, the mesh body is fitted in the hopper, and the hopper is attached with an opening upward at the upper part of the feeding mechanism. It is difficult to discharge and clean the fertilizer remaining in the hopper.

  Then, the technique which comprises the said fertilizer application so that switching to a working attitude | position and a maintenance attitude | position is known (for example, refer patent document 2). If comprised in this way, the fertilizer accommodated in the hopper can be easily discharged | emitted by switching to a maintenance attitude | position.

Japanese Patent No. 3585447 JP 2006-101783 A

  However, in the case of the structure in which the net body is fitted in the hopper of the fertilizer application apparatus, the net body obstructs discharge and a little fertilizer remains, and it is necessary to remove the net body to discharge all the fertilizer. , It took a lot of work to discharge. Then, this invention makes it a subject to provide the fertilizer application which can aim at the efficiency of discharge | emission and cleaning of the fertilizer in a hopper.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, in a fertilizer application device that discharges the fertilizer in the hopper to the field by a predetermined amount, the hopper is arranged on the left and right, and the left and right hoppers are pivotally supported so as to be rotatable in the horizontal and vertical directions, A sorting net that allows only fertilizer of a predetermined size or less to pass through is provided in the left and right hoppers, and when the left and right hoppers are rotated left and right upward, the respective sorting nets in the left and right hoppers are left and right hoppers. The left and right sorting nets are pivotally supported so as to be separated from each other so that a gap is formed, and the left and right hoppers can be pivoted upward and downward to discharge the fertilizer in the left and right hoppers. It is composed.

  According to a second aspect of the present invention, the sorting screens in the left and right hoppers are configured to be detachable from the left and right hoppers, respectively.

  According to a third aspect of the present invention, a restriction member is provided in the left and right hoppers to set a rotation range of the left and right sorting nets.

  As effects of the present invention, the following effects can be obtained.

  According to the present invention, since the fertilizer that has passed through the sorting net in the hopper can be smoothly discharged from the gap between the sorting net and the hopper formed when the left and right hoppers are rotated left and right upward, respectively. Further, it is possible to increase the efficiency of discharging and cleaning the fertilizer in the left and right hoppers.

The side view which shows the riding rice transplanter which comprises a fertilizer. The rear view which shows a fertilizer application apparatus. Similarly rear perspective view. Similarly side sectional drawing. FIG. The partial back sectional view which shows the rotation aspect of a selection net | network. The partial back sectional view which shows the rotation aspect of the selection net | network of a fertilizer applicator. The partial back sectional view which shows the rotation aspect of the selection net | network of a fertilizer applicator.

  First, a four-storied riding rice transplanter 1 (hereinafter simply referred to as “rice transplanter 1”) having a fertilizer application 100 that is an embodiment of a fertilizer application will be described. In the following description, for the sake of explanation, the direction of arrow A in the figure is defined as “front”, and the left, right, and rear are determined toward the front.

  As shown in FIG. 1, the rice transplanter 1 mainly includes a traveling device 10, a lifting device 30, a planting device 40, a fertilizer application device 100, and the like.

  The traveling device 10 of the rice transplanter 1 mainly includes a vehicle body frame 11, front wheels 12 and 12, rear wheels 13 and 13, an engine 14, a bonnet 15, a vehicle body cover 16, a dashboard 17, a steering handle 18, a driver's seat 19, and a column. A frame 20 and the like are provided.

  The body frame 11 that forms the skeleton of the rice transplanter 1 is supported by front wheels 12 and 12 on the both sides of the body frame 11 and rear wheels 13 and 13 on the rear. An engine 14 is mounted on the front portion of the body frame 11, and a bonnet 15 is disposed so as to cover the engine 14.

  A vehicle body cover 16 is disposed on both sides of the bonnet 15 and behind the bonnet 15 so as to cover the upper surface of the vehicle body frame 11. The vehicle body cover 16 is formed in a substantially staircase shape with front, rear, and rear heights, and the front portion of the vehicle body cover 16 is a step when the operator gets into the rice transplanter 1.

  At the rear part of the bonnet 15, a dashboard 17 having operation devices such as levers and switches for operating the rice transplanter 1 is arranged. Further, a steering handle 18 for steering the rice transplanter 1 is disposed so as to protrude above the bonnet 15. A driver's seat 19 for an operator to sit is disposed behind the steering handle 18 and at a substantially upper center in the front and rear direction of the body frame 11.

  A pair of left and right column frames 20 are erected on both sides of the rear portion of the body frame 11, and a horizontal beam frame (not shown) is horizontally disposed on the column frame 20. A fertilization frame 110 described later is fixed on the support frame 20 and the cross beam frame.

  And the raising / lowering apparatus 30 is arrange | positioned behind the traveling apparatus 10, and the rice transplanter 1 has connected the planting apparatus 40 mentioned later by the raising / lowering apparatus 30 so that raising / lowering is possible.

  The planting device 40 is for planting seedlings in a field, and mainly includes a seedling mount 41, a planting unit 42 (rotary case 44, planting claws 45), a float 43, and the like.

  The seedling stage 41 is disposed behind the vehicle body frame 11 so as to incline from front to rear and low, and a planting portion 42 is disposed at the rear lower part of the seedling stage 41. The planting unit 42 includes a rotary case 44 that rotates with a driving force from the engine 14, a planting claw 45 that is attached to the rotary case 44 and that plants seedlings on a farm field.

  The float 43 supports the planting device 40 to level the field, and is disposed below the seedling table 41.

  In this way, the rice transplanter 1 reciprocates (slids) the seedling table 41 left and right by the lateral feed mechanism as it travels forward, and drives the rotary case 44 and the planting claws 45 in synchronization with this reciprocation. Then, planting continuously, scraping one seedling into each strip.

  Below, the fertilizer application apparatus 100 is demonstrated. In addition, in this embodiment, although the fertilizer application apparatus 100 demonstrates as what is for four strips corresponding to the rice transplanter 1, it does not limit the said number of strips.

  The fertilizer application device 100 supplies fertilizer to the field in accordance with the seedling planting by the planting device 40. The fertilizer application device 100 is disposed behind the driver's seat 19 and in front of the planting device 40. As shown in FIG. 1 to FIG. 5, the fertilizer applying apparatus 100 mainly includes a fertilizer frame 110, a first power transmission mechanism 120, a first upper fertilizer 130, a second upper fertilizer 140, a lower fertilizer 150, and a first time. A moving mechanism 160, a second rotating mechanism 170, a connecting mechanism 180, a releasing mechanism 190, and the like.

  As shown in FIGS. 2 to 4, the fertilizing frame 110 is a main structure of the fertilizing apparatus 100. The fertilization frame 110 mainly includes support plates 111 and 111, upper frames 112 and 112, lower frames 113 and 113, connection frames 114 and 114, auxiliary support plates 115 and 115, and the like.

  The support plates 111 and 111 are plate-like members erected in a pair of left and right. The support plates 111 are arranged at a predetermined interval from each other.

  The upper frames 112 and 112 are hollow rod-shaped members having a rectangular cross section (see FIG. 4). The upper frames 112 and 112 are disposed such that the longitudinal direction thereof substantially coincides with the left-right direction. The upper frames 112 and 112 are fixed to the upper front and rear portions of the support plates 111 and 111, respectively, and connect the support plates 111 and 111 to each other.

  The lower frames 113 and 113 are hollow rod-shaped members having a circular cross section (see FIG. 4). The lower frames 113 and 113 are arranged such that the longitudinal direction thereof substantially coincides with the left-right direction. The lower frames 113 and 113 are fixed to the lower front and rear portions of the support plates 111 and 111, respectively, and connect the support plates 111 and 111 to each other.

  The connection frames 114 and 114 are members obtained by bending a plate-like member into a substantially U shape when viewed from the back. The connection frames 114 and 114 are arranged in a pair of left and right, and connect the front and rear lower frames 113 and 113 to each other. Thereby, the rigidity of the fertilization frame 110 is increased.

  The auxiliary support plates 115, 115... Are plate-like members. The auxiliary support plates 115, 115... Are arranged between the support plates 111, 111 in parallel with the support plates 111, 111 at a predetermined interval.

  As shown in FIGS. 4 and 5, the first power transmission mechanism 120 shifts and transmits the power transmitted from the engine 14. The first power transmission mechanism 120 is provided at the front portion of the fertilization frame 110 via the bracket 121. The first power transmission mechanism 120 mainly includes a first transmission shaft 122, a transmission 123, a second transmission shaft 124, a clutch 125, and the like.

  One end of the first transmission shaft 122 is linked to a transmission (not shown).

  The transmission 123 shifts the transmitted power. The transmission 123 is configured by members such as a gear and a shaft for shifting power. The other end of the first transmission shaft 122 is linked to the transmission 123 from below.

  The second transmission shaft 124 transmits the power changed by the transmission 123. One end (front end) of the second transmission shaft 124 is linked to the transmission 123. The other end (rear end) of the second transmission shaft 124 protrudes toward the rear of the transmission 123.

  The clutch 125 connects and disconnects power transmission by the second transmission shaft 124. The clutch 125 is provided in the middle of the second transmission shaft 124, and the power transmission by the second transmission shaft 124 can be blocked by separating the second transmission shaft 124 forward and backward.

  In the first power transmission mechanism 120 configured as described above, the power transmitted from the engine 14 to the first transmission shaft 122 is shifted by the transmission 123 and transmitted to the second transmission shaft 124.

  As shown in FIGS. 2 to 5, the first upper fertilizer applicator 130 mainly includes a second power transmission mechanism 131, a first input shaft 132, first hoppers 133 and 133, a lid 134, a first gripping part 135, It has a single feed-out portion 136, 136, etc.

  As shown in FIG. 5, the second power transmission mechanism 131 transmits power from the first power transmission mechanism 120 to the first input shaft 132. The second power transmission mechanism 131 is configured by a member such as a gear or a shaft for changing the power transmission direction. The second power transmission mechanism 131 is disposed behind the first power transmission mechanism 120. The other end (rear end) of the second transmission shaft 124 is interlocked with the second power transmission mechanism 131.

  As shown in FIGS. 2, 4, and 5, the first input shaft 132 is linked to the second power transmission mechanism 131 to transmit power. The first input shaft 132 is inserted into the second power transmission mechanism 131 and extends from the second power transmission mechanism 131 to the left and right.

  The first hoppers 133 and 133 are containers that are provided side by side on the left and right sides of the second power transmission mechanism 131 and store fertilizers. Upper and lower portions of the first hoppers 133 and 133 are opened. The lower parts of the first hoppers 133 and 133 are formed in a funnel shape. The first hoppers 133 and 133 are fixed to each other. Notches 133a and 133a are formed on the side surfaces of the first hoppers 133 and 133 that face each other, and the internal spaces communicate with each other by the notches 133a and 133a. In the present embodiment, the first hoppers 133 and 133 are integrally formed. A communication hole 133b is formed on the right side surface of the first hopper 133 on the right side of the first hoppers 133 and 133 (see FIG. 3). Usually, the communication hole 133b is closed by a plug or the like capable of closing the communication hole 133b. Further, as shown in FIGS. 2 and 4, the first hoppers 133 and 133 are provided with sorting networks 230 and 230, respectively. A detailed description of the sorting network 230 will be described later.

  The lid 134 covers the upper parts of the first hoppers 133 and 133 and closes the upper parts of the opened first hoppers 133 and 133.

  As shown in FIG. 5, the first grip portion 135 is a member obtained by bending a rod-shaped member into a substantially U shape in plan view. The first grip 135 is fixed to a first hopper 133 disposed on the left side of the second power transmission mechanism 131. More specifically, one end of the first grip 135 is fixed to the lower front surface of the first hopper 133. The other end of the first grip 135 is fixed to the lower left side surface of the first hopper 133 via a bracket 135a.

  As shown in FIG. 2 and FIG. 4, the first feeding parts 136 and 136 are respectively disposed below the first hoppers 133 and 133, and feed out the fertilizers stored in the first hoppers 133 and 133 by a predetermined amount. It is. The first feeding portion 136 mainly includes an upper housing portion 136a, a feeding mechanism 136b, a lower housing portion 136c, and the like.

  The upper housing portion 136a is a container that receives the fertilizer dropped from the first hopper 133. The upper and lower portions of the upper housing portion 136a are opened. The upper part of the opened upper accommodating part 136a is connected to the lower part of the opened first hopper 133.

  The feeding mechanism 136b feeds the fertilizer stored in the upper storage unit 136a by a predetermined amount. The feed mechanism 136b is driven by power transmitted via a drive bevel gear 136d fixed to the first input shaft 132, a driven bevel gear 136e meshing with the drive bevel gear, and a feed shaft 136f fixed to the driven bevel gear. .

  The lower housing portion 136c is a container that receives fertilizer supplied through the feeding mechanism 136b. The lower accommodating portion 136c is disposed below the feeding mechanism 136b. The upper and lower portions of the lower housing portion 136c are opened. The lower accommodating portion 136c is formed in a funnel shape.

  In the first upper fertilizer machine configured as described above, the power transmitted from the first power transmission mechanism 120 to the second power transmission mechanism 131 is shifted by the second power transmission mechanism 131 and the first input shaft 132 is transmitted. Is transmitted to. The power transmitted to the first input shaft 132 is transmitted to the feed shaft 136f via the drive bevel gear 136d and the driven bevel gear 136e. The feed mechanism 136b is driven by the power transmitted to the feed shaft 136f, and the fertilizer stored in the first hopper 133 is supplied to the lower storage portion 136c via the upper storage portion 136a and the feed mechanism 136b.

  As shown in FIGS. 2 to 5, the second upper fertilizer applicator 140 mainly includes a second input shaft 142, a second hopper 143, a lid 144, a second gripping part 145, a second feeding part 146, and the like. The second upper fertilizer applicator 140 is juxtaposed to the left of the first upper fertilizer applicator 130.

  As shown in FIGS. 2 and 5, the second input shaft 142 transmits power from the second power transmission mechanism 131. The second input shaft 142 is disposed on the same axis as the first input shaft 132. The second input shaft 142 is linked and connected to the first input shaft 132 via the connection mechanism 180. Further, the connection between the first input shaft 132 and the second input shaft 142 by the connection mechanism 180 can be released by the release mechanism 190.

  The 2nd hoppers 143 and 143 are juxtaposed to the left of the first hoppers 133 and 133, and are containers for storing fertilizers. Since the configuration of the second hoppers 143 and 143 is substantially the same as the configuration of the first hoppers 133 and 133 described above, description thereof is omitted. A communication hole 143b is formed on the left side surface of the second hopper 143 on the left side of the second hoppers 143 and 143 (see FIG. 3). Usually, the communication hole 143b is closed by a plug or the like that can close the communication hole 143b. In addition, as shown in FIG. 2, sorting networks 240 and 240 are provided inside the second hoppers 143 and 143, respectively.

  The lid 144 covers the upper parts of the second hoppers 143 and 143 and closes the upper parts of the opened second hoppers 143 and 143.

  As shown in FIG. 5, the second grip portion 145 is a member obtained by bending a rod-like member into a substantially U shape in plan view. The second grip 145 is fixed to the right second hopper of the two second hoppers 143 and 143. More specifically, one end of the second grip portion 145 is fixed to the lower front surface of the second hopper 143. The other end of the second gripping portion 145 is fixed to the lower right side surface of the second hopper 143 via the bracket 145a.

  As shown in FIG. 2, the second feeding portions 146 and 146 are respectively disposed below the second hoppers 143 and 143, and feed out the fertilizers stored in the second hoppers 143 and 143 by a predetermined amount. The second feeding portions 146 and 146 are driven by the power transmitted by the second input shaft 142. The second feeding portion 146 mainly includes an upper housing portion 146a, a feeding mechanism, a lower housing portion, and the like. Since the configuration of the second feeding portion 146 is substantially the same as the configuration of the first feeding portion 136 described above, the description thereof is omitted.

  As shown in FIG. 1 to FIG. 4, the lower fertilizer applicator 150 mainly includes fertilizer transfer units 151, 151..., Fertilizer units 152, 152.

  As shown in FIG. 4, the fertilizer application units 151, 151,... Guide the fertilizer fed from the first feeding unit 136 and the second feeding unit 146. The fertilizer transfer unit 151 mainly includes a connection pipe 151a, a transfer hose 151b, and the like.

  The connecting pipe 151a is a substantially cylindrical member arranged so that the longitudinal direction is the front-rear direction. The lower part of the first feeding part 136 (or the second feeding part 146) is connected to the middle part of the connecting pipe 151a.

  The conveyance hose 151b is a bendable member formed of a soft synthetic resin or the like. One end of the transport hose 151b is connected to the rear end of the connection pipe 151a. The other end of the transfer hose 151b is extended to the vicinity of the planting part 42 (see FIG. 1).

  As shown in FIG. 1, the fertilizers 152, 152,... The fertilizer 152 is connected to the other end of the transport hose 151b in the vicinity of the planting part.

  As shown in FIG. 2 to FIG. 4, the blower 153 supplies wind into the fertilizer transfer unit 151 to assist the transfer of fertilizer. The blower 153 mainly includes a blower 153a, a blower pipe 153b, and the like.

  The blower 153 a applies pressure to the air and discharges it, and is disposed at the left end of the fertilizer application frame 110. The blower 153a is configured by a fan, a blower, or the like.

  The blower pipe 153b is a substantially cylindrical member arranged so that the longitudinal direction is the left-right direction. One end of the blower pipe 153b is connected to the discharge port of the blower 153a. The other end of the blower pipe 153b is closed. The blower pipe 153b is connected to the front end of the connection pipe 151a in the middle part thereof.

  In the lower fertilizer machine 150 configured as described above, the fertilizer supplied from the first upper fertilizer machine 130 and the second upper fertilizer machine 140 to the connection pipe 151a is transported by the air supplied from the blower 153 to the transport hose 151b. Is transferred to the fertilizer 152. The fertilizer 152 releases the fertilizer to the field while creating grooves in the field.

  As shown in FIG.2 and FIG.3, the 1st rotation mechanism 160 supports the 1st upper fertilizer 130 so that rotation upward with respect to the fertilizer frame 110 is possible. The first rotation mechanism 160 mainly includes first pivot support brackets 161 and 161, a first rotation support shaft 162, and the like.

  The first pivot bracket 161 is a plate-like member fixed to the right side surface of the first upper fertilizer applicator 130. The lower end of the first pivot support bracket 161 extends downward to the right side of the fertilization frame 110.

  The first rotation support shaft 162 is supported on the right side surface (support plate 111) of the fertilizer frame 110 with the axial direction as the front-rear direction. The 1st rotation support shaft 162 supports the lower end part of the 1st pivot bracket 161 so that rotation is possible.

  The 2nd rotation mechanism 170 supports the 2nd upper fertilizer 140 so that rotation upward with respect to the fertilizer frame 110 is possible. Since the second rotation mechanism 170 has substantially the same configuration as the first rotation mechanism 160, description thereof is omitted.

  By the first rotation mechanism 160 configured as described above, the first upper fertilizer applicator 130 is configured to be rotatable upward about the first rotation support shaft 162.

  Next, referring to FIG. 6, the configuration of the selection networks 230 and 230 provided in the first hoppers 133 and 133 will be described in detail. In addition, since the selection networks 240 and 240 respectively provided in the second hoppers 143 and 143 have substantially the same configuration as the selection networks 230 and 230, description thereof is omitted.

  The sorting nets 230 and 230 are mesh-like members that allow only a predetermined size of the fertilizer stored in the first hoppers 133 and 133 to pass to the first feeding portions 136 and 136. The sorting nets 230 and 230 are disposed horizontally in the upper and lower middle portions of the first hoppers 133 and 133 to prevent the solidified fertilizer lump that has absorbed moisture from flowing down to the first feeding portions 136 and 136. At the same time, it is possible to prevent the flow of fertilizer from being hindered by the bridging phenomenon.

  The sorting nets 230 and 230 include second rotation support shafts 231 and 231, respectively. The second rotation support shafts 231 and 231 are arranged in the front-rear direction in parallel with the first rotation support shaft 162 of the first rotation mechanism 160 inside the first hopper 133 and 133 and supported by the first hopper 133 and 133. Is done. The second rotation support shafts 231 and 231 are provided at the ends of the sorting nets 230 and 230 on the opposite side to the first rotation support shaft 162. In the present embodiment, the left sides of the sorting nets 230 and 230 are pivotally supported in the first hoppers 133 and 133 via the second rotation support shafts 231 and 231 so as to be rotatable upward. However, in consideration of maintenance and the like, the sorting nets 230 and 230 are configured to be detachable from the first hoppers 133 and 133. The opposite sides of the sorting nets 230 and 230 to the second rotation support shafts 231 and 231 (the right sides of the sorting nets 230 and 230, respectively) are in contact with the inner surfaces of the first hoppers 133 and 133. Etc. may be provided and placed. Thus, during normal times (when the first upper fertilizer machine 130 is not rotating upward), the sorting nets 230 and 230 are configured to be arranged substantially horizontally.

  When the first upper fertilizer machine 130 is rotated upward in order to discharge the fertilizer remaining inside, the sorting nets 230 and 230 are moved downward from the second rotation support shafts 231 and 231 by their own weight. Suspended by. As a result, the sorting screens 230 and 230 (respectively right end portions) and the first hoppers 133 and 133 (respectively inner sides) are separated to form a gap. The fertilizer remaining below the sorting nets 230 and 230 follows the inclination of the inside of the first hoppers 133 and 133 and below the sorting nets 230 and 230 where the fertilizer remains by the upward rotation of the first upper fertilizer applicator 130. It is discharged from the gap that is located on the lower side.

  As described above, the notches 133a and 133a are formed on the side surfaces of the first hoppers 133 and 133 that face each other, and the internal spaces communicate with each other. Accordingly, the fertilizer discharged from the upper first hopper 133 in the posture in which the first upper fertilizer machine is rotated upward falls to the inside of the lower first hopper 133 through the notches 133a and 133a. To do. Then, the dropped fertilizer is discharged from the communication hole 133b to the outside of the lower first hopper 133 together with the fertilizer of the lower first hopper 133.

  With the above-described configuration, when the first upper fertilizer applicator 130 is rotated upward, the sorting nets 230 and 230 are freely rotated, and the sorting nets 230 and 230 (each of the right end portions thereof) and the first Since the hoppers 133 and 133 are separated from each other and a gap is formed, the fertilizer in the first hoppers 133 and 133, particularly the fertilizer remaining below the sorting nets 230 and 230, can be smoothly discharged. . Therefore, discharge | emission of the fertilizer in the fertilizer application apparatus 100 and efficiency improvement of cleaning can be achieved. Further, since the sorting nets 230 and 230 are pivotally supported by the second rotation support shafts 231 and 231, the sorting nets 230 and 230 are detached when the first upper fertilizer machine 130 is rotated, and the attachment positions are shifted. There is nothing to do.

  Further, the sorting networks 230 and 230 can be configured differently from the above. That is, as shown in FIG. 7, the sorting screens 230 and 230 are divided into at least two or more, and the second rotation support shafts 231 and 231 are the first rotation support shafts 162 of the divided sorting networks 230 and 230. It is possible to adopt a configuration in which the sorting nets 230 and 230 on the side closest to are pivotally supported. This will be described in detail below.

  Each of the sorting networks 230 and 230 is divided into two with substantially the same size. Here, in the normal time of the first hoppers 133 and 133 (when the first upper fertilizer machine 130 is not rotating upward), the left sides of the divided sorting nets 230 and 230 are the sorting nets 230a and 230a, The right side is designated as a sorting network 230b / 230b. The selection networks 230 and 230 are not limited to two divisions, and may be three divisions or the like as long as the object of the present invention can be achieved.

  The sorting nets 230a and 230a on the side far from the first rotation support shaft 162 are fixed inside the first hoppers 133 and 133, respectively, so that the sorting nets 230a and 230a are substantially horizontal in a normal time. Then, second rotation support shafts 231 and 231 are provided on the left end portions (sides opposite to the first rotation support shaft 162) of the sorting nets 230b and 230b.

  The left ends of the sorting screens 230b and 230b are pivotally supported by the second rotation support shafts 231 and 231 so as to be rotatable upward. The right end portions of the sorting nets 230b and 230b are brought into contact with the first hoppers 133 and 133, and the sorting nets 230b and 230b are arranged substantially horizontally in a normal state. Therefore, in a normal time, the sorting nets 230a and 230a and the sorting nets 230b and 230b are configured in the first hoppers 133 and 133 so as to be substantially horizontal to each other.

  When the first upper fertilizer machine 130 is rotated upward in order to discharge the fertilizer remaining in the interior, the sorting nets 230b and 230b rotate about the second rotation support shafts 231 and 231 by their own weights and move downward. Suspended vertically. As a result, the sorting nets 230b and 230b (the right end portion thereof) and the first hoppers 133 and 133 (the inner sides thereof) are separated to form a gap. The fertilizer remaining below the sorting nets 230 and 230 follows the inclination of the inside of the first hoppers 133 and 133 and below the sorting nets 230 and 230 where the fertilizer remains by the upward rotation of the first upper fertilizer applicator 130. It is discharged from the gap that has been positioned below.

  With the above configuration, when the first upper fertilizer machine 130 is rotated upward, the sorting nets 230b and 230b are freely rotated, and the sorting nets 230b and 230b are separated from the first hoppers 133 and 133. Since the gap is formed, the fertilizer in the first hoppers 133 and 133, particularly the fertilizer remaining below the sorting nets 230 and 230, can be discharged smoothly. Moreover, only the sorting nets 230b and 230b that need to be rotated to discharge the fertilizer in the first hoppers 133 and 133 are configured to be rotatable, so that the rotation of the sorting nets inhibits the discharge of the fertilizer. Can be prevented. Therefore, discharge | emission of the fertilizer in the fertilizer application apparatus 100 and efficiency improvement of cleaning can be achieved. Further, when the fertilizer falls from the first hopper 133 which is the upper side when the first upper fertilizer is rotated upward, in the configuration shown in FIG. Although there is a possibility of hitting the sorting net 230, by dividing the left and right, the rotation amount of the lower end of the sorting net 230b is reduced, and the fertilizer falling from the top is less likely to come into contact with the lower sorting net 230b. Can be prevented.

  In addition, the sorting net 230 is not divided, so that the fertilizer falling from the upper first hopper 133 when rotating upward does not hit the sorting net 230 in the lower first hopper 133. It can also be set as the structure which controls rotation of the selection net | network 230 in the 1st hopper 133 of this. That is, as shown in FIG. 8, the restriction that restricts the downward rotation at a predetermined angle in the middle of the rotational trajectory of the sorting net 230 in the outer first hopper 133 that is the lower side when it is rotated upward. The member 233 is provided in the first hopper 133. This will be described in detail below.

  In the first outer hopper 133 that is the lower side when rotated upward, the sorting screen 230 is horizontally disposed in the middle of the upper and lower sides in the first hopper 133 in the same manner as described above, and the second rotational support shaft 231 is provided. It is provided at the end portion of the sorting screen 230 on the opposite side to the first rotation support shaft 162. The restricting member 233 is formed of a protruding member such as a pin, and protrudes inward from the front or rear surface of the first hopper 133. The arrangement position of the regulating member 233 is in the middle of the turning trajectory of the sorting net 230, and in a state where the first hopper 133 is pivoted upward, the sorting net 230 is at a position smaller than the angle in which the sorting net 230 faces the vertical direction. It is. However, the arrangement position of the restriction member 233 is not limited to the above position, and the second rotation support shaft 231 is fixed to the sorting net 230 and the restriction member 233 is disposed in the vicinity of the second rotation support shaft 231. Thus, a structure that restricts the rotation angle can also be adopted.

  Thus, as described above, the rotation angle of the sorting screen 230 can be restricted to a predetermined angle. That is, when the first upper fertilizer applicator 130 is rotated upward, the sorting nets 230 and 230 are suspended in the lower vertical direction around the second rotation support shafts 231 and 231 by their own gravity. However, rotation of the lower sorting net 230 is regulated by the regulating member 233 halfway. In other words, by providing the restriction member 233, the distance between the right end of the sorting screen 230 and the inner surface of the first hopper 133 can be set in advance.

  By configuring as described above, the distance between the sorting net 230 and the first hopper 133 can be set in advance when the first upper fertilizer machine 130 is rotated upward, so the sorting net 230 is necessary. It does not rotate as described above, and it can be prevented that the discharge of the fertilizer falling from the upper hopper is inhibited. Therefore, discharge | emission of the fertilizer in the fertilizer application apparatus 100 and efficiency improvement of cleaning can be achieved.

DESCRIPTION OF SYMBOLS 1 Riding rice transplanter 100 Fertilizer 110 Fertilizer frame 120 1st power transmission mechanism 130 1st upper fertilizer 132 First input shaft 133 1st hopper 135 1st holding part 136 1st delivery part 150 Lower fertilizer 151 Fertilizer conveyance part 152 Fertilizer 160 First rotation mechanism 180 Connection mechanism 230 Sorting net 231 Second rotation support shaft 233 Restriction member

Claims (3)

  In the fertilizer application device that releases the fertilizer in the hopper to the field by a predetermined amount, the hopper is arranged on the left and right, and the left and right hoppers are pivotably supported in the horizontal and vertical directions, respectively. When the left and right hoppers are rotated upward and left and right respectively, the respective selection screens in the left and right hoppers are separated in the left and right hoppers to form a gap. The left and right sorting nets are pivotally supported so that the fertilizer in the left and right hoppers can be discharged by rotating the left and right hoppers upward and left and right respectively. apparatus.   The fertilizer applying device according to claim 1, wherein the sorting nets in the left and right hoppers are configured to be detachable from the left and right hoppers, respectively.   The fertilizer application device according to claim 1 or 2, wherein a regulating member for setting a rotation range of the left and right sorting nets is provided in the left and right hoppers.

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