JP2014027899A - Fertilizer applicator of seedling transplanter - Google Patents

Abstract

【Task】
In a fertilizer application of a seedling transplanting machine that performs fertilization work while planting seedlings in a plurality of strips, the fertilizer hose is less likely to be clogged and a stable fertilizer can be supplied, and a reverse flow of the conveying wind is unlikely to occur.
[Solution]
A seedling planting unit 5 for planting a plurality of seedlings loaded on the rear of the traveling vehicle body 1 in the field is provided, a fertilizer device 8 for supplying fertilizer to the field is provided, and the fertilizer supplied from the fertilizer device 8 is a seedling planting unit. A plurality of fertilization hoses 12 for guiding near the seedling planting position of 5 seedlings are provided, and an air duct 10 for attaching the plural fertilization hoses 12 is provided at the lower part of the fertilizer 8. A blower 9 that generates fertilizer conveying air is provided at the end, and two adjacent fertilization hoses 12 among the multiple fertilization hoses 12 are crossed.
[Selection] Figure 2

Description

  The present invention relates to a seedling transplanting machine including a fertilizer application device that can evenly fertilize each seedling planting strip from each fertilizer hose.

  A planting device is connected to the rear part of the traveling vehicle body, and a fertilizer for performing fertilization of a plurality of strips is mounted. The fertilizer fed by this feeding device is guided to the fertilizer hose for air conveyance and provided at the lower part of the planting device. A technique (see, for example, Patent Document 1) of applying fertilizer while planting seedlings in a field scene leveled with a float is known.

JP 2008-220250 A

  In the fertilizer, the transport pipe that receives the fertilizer fed from each feeding device and transports it by air, the fertilizer hose connected to this, etc. are arranged in a side-by-side configuration, and each of the transport pipes is long in the lateral width direction. In the form of branching communication at predetermined intervals, blowing from the blower connected to the lateral end of this air duct, branching air to each fertilizer hose and transporting fertilizer, the air pressure of each fertilizer hose differs. Fertilization status is different.

  In general, a fertilizer hose connected to a position near the blower of the air duct has a strong wind force, so that fertilizer residue, mud and muddy water do not easily enter, and clogging of fertilizer is difficult to occur. However, it is easy to blow off the mud and muddy water at the outlet, and the conveyance air inside the fertilizer hose is likely to blow back.

  In addition, the fertilizer hose connected to the far side position is weak in the wind force sent, so the fertilizer stays in the middle of conveyance, and mud and mud water easily enter the outlet part, so it is easy to clog the fertilizer There is a problem that it is difficult to maintain a stable fertilization state.

  In addition, the outlet portion of the fertilizer hose is arranged at the field level portion of each float, and the swing height of the left and right side floats with respect to the center float varies depending on the working conditions and the like. Since it is easy, the exit part of a fertilization hose is easy to be blocked | closed with mud, mud, etc., and there exists a problem which fertilization precision falls easily.

  The invention according to claim 1 is provided with a seedling planting unit 5 for planting a plurality of seedlings loaded on the rear part of the traveling vehicle body 1 in a field, a fertilizer 8 for supplying fertilizer to the field, and a fertilizer 8 A plurality of fertilizer hoses 12 for guiding the fertilizer supplied from the seedling planting section 5 near the seedling planting position are provided, and the air duct 10 for mounting the plural fertilizer hoses 12 is provided as a fertilizer applying device 8. A blower 9 for generating a fertilizer conveying wind is provided at the left and right side ends of the air duct 10, and two adjacent fertilization hoses 12 among a plurality of fertilization hoses 12 are crossed. The fertilizer application of the characteristic seedling transplanter.

  The invention according to claim 2 is characterized in that the first fertilization hose 12a arranged at a position farthest from the blower 9 and the second fertilization hose 12b located at a position secondly spaced from the blower 9 are crossed. The fertilizer application of the seedling transplanter.

  According to a third aspect of the present invention, an exhaust port 55 is formed in the fertilizer hose 12, an on-off valve 57 is provided on the exhaust port 55, a weight 56 for closing the on-off valve 57 is provided, and an internal pressure of the fertilizer hose 12 is increased. The fertilizer application device for a seedling transplanter according to claim 1 or 2, characterized in that when the lift is raised, the on-off valve 57 is opened against the weight 56 and the air inside the fertilizer hose 12 is discharged from the exhaust port 55. And

  The invention according to claim 4 is characterized in that the weight (56) is heavier as it is provided on the fertilization hose (12) on the side away from the blower (9). The machine fertilizer.

  According to a fifth aspect of the present invention, a clogging sensor 60 for detecting that clogging has occurred in the outlet portion 14 is provided at the outlet portion 14 of the fertilizer hose 12, and the clogging sensor 60 detects the clogging and opens and closes the clogging sensor 60. The fertilizer application device for a seedling transplanter according to claim 3, wherein the opening / closing member 62 for opening and closing the valve 57 is operated to discharge air from the exhaust port.

  The invention according to claim 6 is provided with a seedling planting unit 5 for planting a plurality of seedlings loaded on the rear part of the traveling vehicle body 1 in a field, a fertilizer application device 8 for supplying fertilizer to the field, and the fertilizer application device 8. Are provided with a plurality of fertilizer hoses 12 for guiding the fertilizer supplied from the seedling planting portion 5 near the planting position of the seedlings, and the intermediate portions 12m in the front-rear direction of the plurality of fertilizer hoses 12 are assembled. Thus, the fertilizer for a seedling transplanter is characterized in that the communication port 50 is formed in each of the gathering portions 44 to disperse the conveying wind pressure between the fertilizer hoses 12.

  The invention described in claim 1 can change the position of the outlet portion 14 of each fertilization hose 12 by providing two adjacent fertilization hoses 12 out of a plurality of fertilization hoses 12. Therefore, the outlet 14 of the fertilizer hose 12 where the conveying wind of the fertilizer supplied from the blower 9 is weak is arranged closer to the inside of the machine body where it is relatively difficult to clog even if the conveying wind is weak, and a certain level of conveying air is supplied. The outlet portion 14 of the fertilizer hose to be used is disposed closer to the outside of the machine body that is likely to be clogged when the conveying wind is weak, and it becomes possible to reliably supply the fertilizer from each outlet portion 14 to the field.

Thereby, it is prevented that the fertilizer supplied to the seedling is insufficient, and the growth of the seedling is stabilized.
In addition to the effect of the invention according to claim 1, the invention according to claim 2 is a fertilization hose 12 disposed at a position farthest from the blower 9 and a fertilization hose disposed at a position second from the blower 9. Since the location where the fertilization hoses 12 cross each other becomes one by crossing 12, the configuration becomes simple.

  In addition to the effect of the invention of claim 1 or 2, the invention described in claim 3 is provided with an open / close valve 57 on the fertilizer hose 12 and presses the open / close valve 57 with a weight 56, so Since the internal pressure of the fertilizer hose 12 can be increased when clogging occurs due to the intrusion of the fertilizer, the conveying wind from the fertilizer hose 12 toward the outlet portion 14 becomes strong, and mud adhered to the outlet portion 14 is It becomes possible to remove and fertilizer is released stably.

  And when the internal pressure of the fertilizer hose 12 rises too much, the on-off valve 57 opens against the pressing of the weight 56, so that the internal pressure rises too much and the fertilizer flows backward from the fertilizer hose 12 and is stored in the fertilizer 8. Since it is possible to prevent the conveying wind from blowing up the fertilizer that is present, the supply of fertilizer is not delayed, and the efficiency of fertilizing work is improved.

  In addition to the effect of the invention according to claim 3, the weight of the weight 56 is increased toward the side away from the blower 9, so that the inner pressure is closer to the side away from the blower 9 where clogging is likely to occur. Therefore, it becomes easy to remove the mud adhering to the outlet part 14, and the stagnation of the fertilizer supply is prevented.

  Further, in the fertilization hose 12 that is close to the blower 9 and has a strong conveyance wind, the weight 56 is light and the on-off valve 57 is easy to open and close, so that it is prevented that the conveyance pressure becomes too strong because the internal pressure rises too much. It is prevented from defeating.

  According to the fifth aspect of the invention, in addition to the effect of the third aspect of the invention, when the clogging sensor 60 provided at the outlet portion 14 detects clogging of fertilizer, the opening / closing member (62) is operated to automatically open / close. By adopting a configuration in which the valve (57) is opened, it is possible to prevent the fertilizer from flowing back from the fertilizer hose 12 due to excessive internal pressure and preventing the conveying air from blowing up the fertilizer stored in the fertilizer application device 8. The efficiency of fertilization work is improved.

  According to the sixth aspect of the present invention, the intermediate portions 12m in the front-rear direction of the plurality of fertilizer hoses 12 are gathered to form a communication port 50 that communicates between the fertilizer hoses 12 in the gathering portion 44, thereby conveying air. Since the strength of the conveying wind of the plurality of fertilizer hoses 12 can be made substantially the same regardless of the distance from the blower 9, the generation of strips with a small amount of fertilizer release is prevented. , Seedling growth is stable.

(A) Side view of seedling transplanter, (b) Side view of main part of fertilizer application, (c) Side view of main part on fertilizer hose outlet side Top view of seedling transplanter Plan view of seedling transplanter showing another embodiment Plan view of fertilizer hose part of seedling transplanter showing another embodiment Side view of a form in which an on-off valve with a weight is provided at the exhaust port of the fertilizer hose Side view of a form in which a clogging sensor is provided in the fertilizer application guide Block diagram of clog sensor Clogging sensor flowchart Perspective view of fertilizer hopper The perspective view which shows the use condition of a fertilizer application hopper part. The perspective view of a bucket part. The perspective view which shows the effect | action of a bucket part. Block diagram of planting transmission operation control The flowchart of planting transmission operation control.

  Based on the drawings, the seedling transplanter transplants the multi-row planting form on the rear side of the traveling vehicle 1 in the riding four-wheel traveling form through the lift link 16 in the parallel link form that is lifted and lowered by the expansion and contraction of the lift cylinder 15. A fertilizer application device 8 is installed on the rear frame 17 at the rear of the driver's seat 18 of the traveling vehicle body 1 to fertilize a field scene where seedling planting is performed by the planting device 5. A plurality of stages of auxiliary seedling shelves 11 that accommodate and support mat seedlings to be supplied to the seedling tank 3 of the planting device 5 are provided on the handle post of the handle 19 and the left and right outer portions of the side floor 20.

  In the vehicle body 1, an engine 22 is mounted in an engine room in which a driver's seat 18 is covered with a support engine cover 21 in the center, and a front axle housing 24 is formed with a pair of left and right front wheels 23 mounted on the front. A mission case 25 and a hydraulic continuously variable transmission 26 that is input to the transmission mechanism on the side of the mission case 25 are arranged to transmit the belt from the engine 22.

  A rear axle housing 28 having a pair of left and right rear wheels 27 mounted thereon is disposed at the rear of the vehicle body 1, and a rear frame 17 is erected above the rear axle 17. The lift link 16 is connected so as to be able to rotate up and down, and a fertilizer 8 in the form of a multi-row fertilizer for fertilizing each seedling is installed on the rear side of the driver seat 18.

  These rear wheels 27 are transmitted via a transmission mechanism in the rear axle housing 28 by a rear wheel interlocking shaft 29 taken out from the rear side portion of the transmission case 25, and the planting device 5, the fertilizer application device 8 and the like are The PTO shaft 30 taken out from the rear end of the mission case 25 is interlocked.

  The planting device 5 is provided with a center float and a side float 2 that slide on a farm field and level the ground under a seedling planting frame 31 mainly composed of a transmission case and the like. The tank 3 is driven so as to reciprocate horizontally in the horizontal direction, and at the rear end, a seedling planting claw 33 is inserted into the seedling inlet 32 of the seedling tank 3 to separate and hold the seedlings, and the float 2 A planting device 4 for planting at a certain depth in a flat farm scene is provided.

  The planting device 4 has a configuration in which the seedling planting claw 33 at the tip portion is driven to move up and down while drawing a planting locus line D having a substantially elliptical shape when viewed from the side. The seedling inlet 32 of the seedling tank 3 is looked into. Each float 2 is configured so that the front end side can swing up and down around a lateral swing support shaft 41 provided near the rear end side planting device 4. A flat part 42 is formed to project from both the left and right side parts or the middle part in the width direction, and the seedling claw 33 of each planting device 4 is planted at the rear side of the flat part 42. In the adjacent position where the seedling planting nail 33 is operated, a groover 34 for forming a fertilizer groove in the field is provided in the float 2 part, and the upper part of the fertilizer groove formed by the groover 34 is provided. The fertilizer guide 13 is provided, and the hose outlet 14 portion of the fertilizer hose 12 is fitted and supported, and the hose outlet 14 is inserted into the fertilizer groove, and the fertilizer is directed to the fertilizer groove of this field scene. Maintain a released fertilizing position.

  In this way, the fertilizer application guide 13 is configured to detachably attach the hose outlet 14 and hold the fertilizer discharged at the predetermined fertilizer groove position in a certain fertilizer posture. The fertilizer discharged from the hose outlet 14 is leveled by the float 2. It is a form in which fertilization is accurately guided to the farm scene. The hose outlet 14 may be a flexible bellows hose (see FIGS. 5 and 6).

  Further, the fertilizer to be applied and discharged from the fertilizer hose 12 may have a form in which the hose outlet 14 is directly desired in a flat field scene or is applied to a fertilizer groove formed by the grooving device 34. A fertilizer guide 13 is formed in a funnel shape, with the hose port 14 of the hose 12 looked into, and the funnel port portion is replaced with the hose outlet 14 so that the fertilizer is applied over the mud surface or fertilizer groove. It can also be configured.

  When such a planting device 5 is swung largely beyond a predetermined vertical swing region by the vertical swing of the center float 2 (as a float sensor), the hydraulic circuit of the lift cylinder 15 is thereby moved. The raising / lowering control valve is actuated to raise and lower the planting device 5 in a deep and soft field, and lower the planting device 5 in a shallow and hard field so as to keep the seedling planting depth substantially constant. It is set as the form which performs.

  In addition, a scraping rotor 36 is disposed on the front side of each float 2, and the field scene to be leveled by each float 2 is previously ground or scraped by transmission by the interlocking shaft 37 from the front rear axle housing 28 portion. It is configured so that leveling is performed satisfactorily.

  The scraper rotor 36 is moved up and down together with the planting device 5. Furthermore, on both the left and right sides of the planting device 5, there are provided drawing markers 44 that can be switched in and out toward the outside unplanted scene.

  The fertilizer application device 8 feeds the feeding device 7 provided corresponding to each seedling vegetation, the fertilizer hopper 6 on the upper portion thereof, and the fertilizer fed from the feeding device 7 and guides them to the fertilization hoses 35. And a blower 9 for blowing air to each of the transfer pipes 38, a blower duct 10 and the like.

  The fertilizer hopper 6, the feeding device 7, the blower duct 10, and the like are widely formed in the lateral direction according to the form of the multi-row planting seedling planting device, and the fertilizer hopper 6 is wide in the lateral direction. A funnel portion 39 is formed at the bottom of each fertilizer strip position interval at the bottom, and a feed outlet 40 is formed at the lower end of the left and right funnel portions 39 to be viewed in the feeding device 7. The blower duct 10 is provided in the lateral direction in the lower part of the fertilizer hopper 6 and the feeding device 7 and the blower 9 is communicated with one end of the blower duct 10.

  Each of the transport pipes 38 can receive the fertilizer fed from the feed port 40 through the feed port 40 of each feed device, and can transport and guide the fertilizer to the fertilizer hose 12 connected to the rear end side. The air duct 10 communicates the front end portions of the transport pipes 38 to branch and blow the air to the transport pipes 38, and the fertilizer fed to the transport pipes 38 is blown out and transported to the connected fertilization hoses 12. .

Here, the structure of this fertilizer application is drawn out from the seedling transplanting machine body 1 to the rear part of the carcass 1 with a float 2 for smoothing the field scene, a seedling tank 3 for feeding mat matted seedlings, and the seedling tank 3. A multi-row planting planting device 5 comprising a planting device 4 and the like for separating and planting seedlings is mounted, and a fertilizer hopper 6 and a feeding device 7 for feeding fertilizer of the fertilizer hopper 6, each of these feeding devices 7 Fertilizer application comprising an air duct 10 provided along the side-by-side direction, and a fertilizer hose 12 that branches from the air duct 10 and passes the hose outlet 14 at each end to the fertilizer guide 13 at each opposing fertilizer strip position. In the seedling transplanting machine in which the device 8 is arranged and fertilized by the fertilizing device 8 in the field scene where the seedling is planted by the planting device 4,
The blower 9 is disposed at one side end of the air duct 10 so as to communicate with air, and the air duct 10 is provided in an intersecting form in which the adjacent fertilization hoses 12 of the branch communication intersect with each other left and right. The hose outlet 14 at each tip is provided so as to look into the adjacent fertilizer application guide 13,
Alternatively, the fertilizer hose 12 is arranged in a parallel configuration in which the fertilizer hose 12 is put in the opposite fertilizer guide 13 in the order in which the fertilizer hose 12 communicates, and the part of the fertilizer hose 12 or the other end side of the air duct 10 is arranged. The fertilizer hose 12 communicating with the portion is provided so as to be switchable to an intersecting form in which the hose outlet 14 is replaced by the adjacent fertilizer guide 13 to constitute a fertilizer application apparatus for a seedling transplanter.

  At the time of seedling planting work, it is easy to place mat seedlings on each seedling tank 3, and when seedling transplanting work is carried out by running a seedling transplanter with fertilizer supplied to the fertilizer application hopper 6, The placed seedlings are fed out and planted in a field scene leveled by the float 2 by the operation of the planting device 4. At this time, the fertilizer of the fertilizer hopper 6 is fed out by the feeding device 7 of the fertilizer applicator 8, and the inside of each fertilizer hose 12 is conveyed and guided by receiving the blowing pressure branched and blown through the blower 2 and the blowing duct 10, Guided by a fertilizer guide 13 formed near the leveling portion 42 of each float 2, discharged to or discharged from a fertilizer groove in a farm scene, and fertilized near a seedling planting position by the planting device 4.

  Thus, the fertilization conveyance wind pressure by each fertilization hose 12 conveyed by the blowing force from the blower 9 or the blowing pressure is strong in the fertilization hose 12 arranged at a position close to the blower 9, and the position on the far side However, these fertilization hoses 12 are weak in the state of crossing the middle part left and right, and the hose outlet 14 at the tip of the fertilization hose 12 has a communication port for the fertilization guide 13. The hose outlet 14 of the fertilizer hose 12 on the side closer to the blower 9 is viewed at the position of the fertilizer guide 13 on the far side, and the hose outlet 14 of the fertilizer hose 12 on the side farther from the blower 9 is closer to the fertilizer guide on the near side. Therefore, fertilization can be performed by increasing the conveying wind pressure at the fertilization strip position farthest from the blowers 9 arranged side by side in the row of fertilization strips.

  On the other hand, at the fertilizer strip position set near the blower 9, the fertilizer strip to be fertilized in a state where the conveying wind pressure is weak can be positioned. Therefore, the fertilizer hose with an easily flexible configuration can be used as a configuration for setting the blower 9, the air duct 10, the fertilizer hose 12, and the like without changing the relative positions with respect to the fertilizer hopper 6 and the feeding device 7. 12, the hose port 14 can be tilted to the left and right to form a cross, and the work wind pressure can be changed to the fertilizer guide 13 at the left and right adjacent positions to perform the multi-strip fertilization mode. Can be distributed to the left and right for each fertilizer strip.

  Further, in the fertilizer application device of the seedling transplanter, as shown in FIGS. 3 and 4, the middle portions of the fertilizer hoses 12 are gathered to form a communication port 50 in the gathering portion 44, and the gathered hose 12 is gathered. It is comprised so that the conveyance wind pressure between each fertilization hose 12 may be disperse | distributed.

  In the plurality of fertilization hoses 12 for fertilizing and conveying the fertilizer fed from the respective feeding devices 7, the intermediate portions 12 m of the respective fertilization hoses 12 are gathered together and communicated between the fertilization hoses 12 in the gathering portion 44. By moving the conveying wind pressure through the port 50, the influence of the arrangement configuration in which the distance of branch communication from the blower 9 through the air duct 10 is made far, close, and different is reduced, and the plurality of fertilizer hoses 12 are Since the strength of the conveying air can be made substantially the same, the amount of fertilizer applied can be maintained evenly in any fertilizer strip, and fertilizer can be applied uniformly, reducing the occurrence of uneven fertilization, accurate and smooth It is possible to perform a fertilizing effect and to stabilize the growth of seedlings.

  The collective form of the middle part of each fertilizer hose 12 is a band 43 wound around the collective part 44 (FIG. 4) or a metal ring is fitted to fix the collective form. Thus, a connecting metal can also be used with the aggregate portion 44 as an independent block form.

  As this connection metal, the fertilization conveying air passage, the communication port 50 communicating between each air passage, and the fertilization hose 12 are inserted into the upper and lower ends of the communication port 50 and connected to the inside of the connection metal. The connection port 50 to be connected and, if necessary, a switching valve for switching the connection between the fertilizer conveying air passages are formed, and the fertilization hose 12 is connected to the upper end portion and the lower end portion of each connection port 50 of the connection metal. It is also possible to adopt a form in which the end portions are fitted and connected.

Only the necessary air for conveyance flows through these communication ports 50. However, in the case of powder fertilizer, some of the communication ports 50 may be conveyed through this communication port 50 in a state of being mixed together with the conveying air.
In the fertilizer application of the seedling transplanter, when the hose outlet 14 is clogged, as shown in FIG. 5, an opening / closing valve 57 closed by a weight 56 is provided in the exhaust port 55 formed in the middle of the fertilizer hose 12. The on / off valve 57 is opened against the weight 56 so that the conveying wind pressure inside the fertilizer hose 12 is released from the exhaust port 55 to the outside.

  The opening / closing valve 57 of the exhaust port 55 formed in a part of each fertilization hose 12 is normally closed by a weight 56 (or by a spring) so that the fertilizer blowing pressure is maintained at a predetermined level and smooth fertilization transfer is performed. However, if the hose outlets 14 of some fertilization hoses 12 are clogged with mud or the like, the blowing pressure of the clogged fertilization hose 12 rises, and the exhaust port 55 of the fertilization hose 12 at this location increases. The on / off valve 57 is opened against the weight 56 to release a high blowing pressure to the outside, and the air pressure of the fertilizer hose 12 is maintained at an appropriate pressure for smooth conveyance.

  The weight 56 for repelling the on-off valve 57 can be set to an appropriate weight corresponding to the conveying air pressure that differs for each arrangement position of the fertilization hose 12. 12 is also configured to maintain the air pressure of the fertilizer transfer substantially constant. That is, the air pressure of each fertilizer transport in the full-strand fertilization hose 12 is equalized by setting the heavier fertilization hose 12 closer to the blower 9 to be heavier and the farther fertilization hose 12 to be lighter in order. Can do.

  A spring may be provided instead of the weight 56. A spring having a predetermined elastic modulus can be used for each fertilization hose 12 arranged corresponding to each fertilization strip position, and the elastic force of each spring is configured to be adjustable with an adjusting tool such as a bolt or nut. You can also.

  Furthermore, as shown in FIGS. 6 to 8, a clogging sensor 60 for detecting that the hose outlet 14 is clogged with mud is provided at the hose outlet 14 of the fertilizer application hose 12, and the clogging sensor 60 detects clogging. The open / close valve 57 provided in the exhaust port 55 is configured to open.

  When the opening / closing valve 57 of the exhaust port 55 is closed, the fertilizer fed to the transport pipe 38 is sprayed and applied to the seedling planting scene by the blowing pressure in a predetermined pressure range blown into the fertilizer hose 12. When the hose outlet 14 becomes clogged with mud or the like, the pressure inside the fertilizer hose 12 rises, but this fertilizer clogging is detected by the clogging sensor 60 and the on-off valve 57 is opened appropriately. The internal pressure of the fertilizer hose 12 is released from the exhaust port 55 to the outside to prevent the internal pressure from rising, and adverse effects due to the pressure increase for a long time inside the fertilizer hose 12 are prevented. When the clogging of the hose outlet 14 is eliminated or the clogging is eliminated, the on-off valve 57 closes the exhaust port 55 to perform normal fertilization conveyance.

  The opening / closing valve 57 of each exhaust port 55 is opened / closed by the electric electromagnetic solenoid 62 from the controller 63 by the detection of the clogging sensor 60 provided in the fertilizer application guide 13. When the clogging sensor 60 detects mud clogging (step S2 in the flowchart of FIG. 7) or when it is detected (S5), the on-off valve 57 is opened (S3), and a part of the conveying wind pressure is discharged from the exhaust port 55. However, when the clogging sensor 61 no longer detects this clogging, the on-off valve 57 is closed (S6), and the fertilizer blowing pressure inside the fertilizer hose 12 is maintained in an appropriate state.

  Next, mainly based on FIGS. 9 and 10, a dispersion guide 66 is formed on the inner surface of a hopper lid 65 that can be opened and closed at the upper hopper port of the fertilizer hopper 6. When supplying to the fertilizer hopper 6, the hopper lid 65 is pivoted to an appropriate angle to the rear side or the like and supported by the link 67 so that the worker M can fertilize the fertilizer bag 68 from above. The fertilizer supplied from the upper central portion position is dispersed in the laterally wide hopper width direction by the guiding action of the dispersion guide 66, and is supplied substantially uniformly into the fertilizer hopper 6. The dispersion guide 66 is formed integrally with the inner side of the hopper lid 65 so as to protrude to an appropriate height, and has, for example, a W-shape or a V-shape, etc., having rib strips inclined downward from the center to the left and right. Is formed. The configuration using the hopper lid 65 is simple and facilitates the supply of fertilizer.

  Behind the fertilizer hopper 6, a fertilizer bag 68 for supplying fertilizer to the fertilizer hopper 6 is supported, or a bag receiving base 70 for opening and supporting the bag mouth portion 69, a bag mouth holder 71, etc. Can be provided. The bag receiving base 70, the bag mouth holder 71, and the like can be attached to the back side of the seedling tank 3 of the planting device 5 that approaches the rear side so that it can be pulled out only when necessary.

  Further, the bag mouth holder 71 may be attached to the hopper lid 65 so as to be raised and lowered so that it can be raised and used when supplying fertilizer. The structure is simple and the fertilizer supply work can be performed easily and quickly.

  Next, mainly based on FIG. 11 and FIG. 12, a frontal portal-shaped lift arm mechanism 72 that swings up and down in the front-rear direction on the front upper portion of the vehicle body 1, and a bucket 73 that is supported on the tip portion are provided. By rotating the lift arm mechanism 72 back and forth, the bucket 73 that has been supplied with the fertilizer in the fertilizer bag 68 by the operator M from the front side of the vehicle body 1 straddles the handle 19 and the upper portion 8 of the driver's seat 18. Then, the fertilizer is moved from the bucket 73 to the fertilizer hopper 6 and supplied to the fertilizer hopper 6 by being moved to the upper side of the fertilizer hopper 6 of the rear fertilizer 8.

  In the configuration in which the fertilizer hopper 6 is divided into left and right as shown in the figure, the bucket 73 is formed wide like the lateral width of the fertilizer hopper 6 and has a branching slope that inclines to the left and right sides at the center. The surface 74 can be formed so that the supplied fertilizer can be evenly divided to the left and right sides, so that it can be easily supplied equally to the left and right sides.

  The lift arm mechanism 72 is supported on an upper portion of the support frame 37 that supports the auxiliary seedling rack 11 so as to be able to undulate and rotate around a support shaft 74, and is rotated by an electric mechanism 75 or the like. The bucket 73 is rotatably supported at the tip of the lift arm mechanism 72 by a bucket shaft 76, and is configured to maintain a suspended state at any rotation phase position and stably hold the stored fertilizer. doing. The bucket 73 can be rotated around the bucket shaft 76 to transfer the fertilizer to the fertilizer hopper 6. However, an outlet shutter is provided at the bottom of the bucket 73 and the shutter is opened to discharge the fertilizer. The fertilizer application hopper 6 can also be configured to be supplied.

  Next, mainly based on the block diagram of FIG. 13 and the flowchart of FIG. 14, the lowering restriction control for restricting the lowering control (lowering the seedling planting value 5 to the seedling planting posture) with respect to the vehicle body 1 of the planting device 5. , To improve the safety of seedling transplanter running. The driving power of the seedling transplanter is determined by the planting speed in the low-speed traveling region where the seedling planting operation is performed and the high-speed traveling region where the traveling is performed on the road by the main transmission of the hydraulic continuously variable transmission 26 and the gear sub-shift in the transmission case 25. It can be switched to the running speed.

  This shift operation control controller 80 includes, on the input side, a travel potentiometer 82 that detects the operation position of the travel operation lever 81 that operates the continuously variable transmission 26, and an operation position of the sub shift lever 83 that operates the sub shift. The operation position of the auxiliary transmission potentiometer 82 for detecting the planting and the planting lifting lever 85 for raising and lowering the seedling planting value 5 are input. Further, on the output side of the controller 80, the control valve of the hydraulic circuit of the lift cylinder 15 is configured to be switched.

  When the traveling operation lever 81 is operated and the traveling speed is operated to a traveling speed position of the third or higher stage of the sub-shift, the seedling planting value 5 that is lowered to the seedling planting work position is automatically Will not be lowered. Further, when the auxiliary transmission lever 83 is in the operation position of the third step or higher (S7), the seedling planting value 5 is not lowered because it is in the traveling speed range (S9). Moreover, when it exists in the operation position below a 2nd step, the seedling planting value 5 can be lowered | hung as what is in a planting speed range (S8).

  If the seedling planting value 5 is lowered during the traveling of the vehicle body, the traveling speed can be lowered after decelerating to the second stage position or less (S8). When the sub-shift sub-shift potentiometer 82 detects that the sub-shift lever 83 has been operated at the traveling speed position, a signal for raising the seedling planting value 5 is transmitted to raise the seedling planting value 5 (S1 to S1). S5).

  Further, when the auxiliary transmission lever 83 is at the traveling speed (S7), the traveling auxiliary transmission potentiometer 82 indicates that the operation position of the traveling operation lever 81 is within the speed range from the third stage position to the maximum speed position value. When it is detected (S6), when the raising / lowering operation of the planting device 5 is performed, the output is suppressed so as not to transmit a descending signal of the seedling planting value 5 (S9).

DESCRIPTION OF SYMBOLS 1 Traveling body 5 Seedling planting part 8 Fertilizer 9 Blower 10 Air duct 12 Fertilizer hose 12m Middle part 14 Hose exit (exit part)
44 Collecting Portion 50 Communication Port 55 Exhaust Port 56 Weight 57 Open / Close Valve 62 Solenoid (Open / Close Member)

Claims (6)

A seedling planting part (5) for planting a plurality of seedlings loaded on the rear part of the traveling vehicle body (1) in the field is provided, and a fertilizer device (8) for supplying fertilizer to the field is provided, and the fertilizer device (8) A fertilizer hose (12) for a plurality of strips for guiding the supplied fertilizer near the seedling planting position of the seedling planting section (5) is provided,
A blower (10) for mounting the fertilization hose (12) for the plurality of strips is provided at the lower part of the fertilizer (8), and a blower for generating fertilizer conveying air at the left and right ends of the blow duct (10). (9) is provided, and a fertilizer for a seedling transplanter, wherein two adjacent fertilizer hoses (12) among the fertilizer hoses (12) for a plurality of strips are crossed.   The first fertilization hose (12a) disposed at the position farthest from the blower (9) and the second fertilization hose (12b) at the position second from the blower (9) are crossed. Fertilizer application for seedling transplanter. An exhaust port (55) is formed in the fertilization hose (12), an open / close valve (57) is provided in the exhaust port (55), and a weight (56) for closing the open / close valve (57) is provided,
When the internal pressure of the fertilizer hose (12) increases, the on-off valve (57) opens against the weight (56), and the air inside the fertilizer hose (12) is discharged from the exhaust port (55). The fertilizer application of the seedling transplanter of Claim 1 or 2 characterized by these.   The fertilizer for a seedling transplanter according to claim 3, wherein the weight (56) is heavier as it is provided on the fertilizer hose (12) on the side away from the blower (9).   A clogging sensor (60) for detecting clogging in the outlet part (14) is provided at the outlet part (14) of the fertilizer application hose (12), and when the clogging sensor (60) detects clogging, the clogging sensor (60) detects clogging. The fertilizer application for a seedling transplanter according to claim 3, wherein the opening / closing member (62) for opening and closing the opening / closing valve (57) is operated to discharge air from the exhaust port. A seedling planting part (5) for planting a plurality of seedlings loaded on the rear part of the traveling vehicle body (1) in the field is provided, and a fertilizer device (8) for supplying fertilizer to the field is provided, and the fertilizer device (8) A fertilizer hose (12) for a plurality of strips for guiding the supplied fertilizer near the seedling planting position of the seedling planting section (5) is provided,
The intermediate portions (12 m) in the front-rear direction of the fertilization hose (12) for the plurality of strips are assembled, and a communication port (50) is formed in the assembly portion (44) to connect the fertilization hoses (12) to each other. A fertilizer application for a seedling transplanter, characterized in that the air pressure of the carrier is dispersed.

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