JP2017029060A - Fertilizer applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fertilizer applicator capable of stabilizing a fertilization amount by installing a conveyance device feeding a fertilizer from an air duct to each fertilization hose reliably.SOLUTION: The fertilizer applicator includes between a feed-out port 7 of a feed-out device 3 and a blow fertilization cylinder 6: a press-out cylinder 12 axially arranging a press-out spiral 10 so as to be rotated in a fitting state inside the press-out cylinder 12 and press out a fertilizer fed from the feed-out port 7 to a press-out port 11; a feed hopper 14 receiving the fertilizer pressed out from the press-out port 11 of the press-out cylinder 12 and feeding the fertilizer to a feed port 13 in an upper peripheral part of the blow fertilization cylinder 6; and a blower 80 blowing conveyance air to a start edge of the press-out cylinder 12. The blower 80 blowing the conveyance air to the start edge of the press-out cylinder 12 can blow the air via a blower pipe 81 communicated with and branched from an air duct 17 blowing air to the blow fertilization cylinder 6.SELECTED DRAWING: Figure 5

Description

  In the fertilizer of the multi-row fertilizer form, the present invention reduces the diameter and size of the air duct and the blower blower for passing the air to be fed to the fertilizer hose portion configured for each fertilizer strip, and reduces the overall fertilizer application By forming the height low, it is easy to perform operations such as supplying fertilizer to the fertilizer hopper and supplying supplementary seedlings to the multi-row planting device.

  An air duct is arranged on the rear side of the feeding device to guide the air blown from the blowers at the left and right lateral ends in the lateral direction, and the fertilizer fed to the feeding portion communicating with each fertilizer hose is jetted. A technical configuration is known (see, for example, Patent Document 1).

JP 2014-212718 A

  In the form of branching communication from the air duct to each fertilizer hose and performing the fertilizer conveying blast, if this air duct is arranged near the rear side of the fertilizer, particularly near the foot of the rear floor, the operator Standing in the area, it is easy to disturb the replenishment work such as replenishing fertilizer to the fertilizer hopper or replenishing mat seedlings to the seedling tank of the multi-row planting device connected to the rear Difficult to perform safe work.

  The invention described in claim 1 is a fertilizer hopper (1) for storing fertilizer, a feeding device (3) for feeding fertilizer supplied from the fertilizer hopper (1) by rotation of a feeding roll (2), and a blower In the fertilizer applicator that constitutes the blow fertilizer cylinder (6) that receives the fertilizer fed from the feeding device (3) and blows and conveys it to the fertilizer hose (5) through the blowing from (4), the feeding device (3 ) And an extruding helix (10) in which a spiral blade (9) is formed on the peripheral surface of the helical shaft (8) between the feeding port (7) and the blower fertilizer tube (6), and the extruding helix (10). An extrusion cylinder (12) that is rotated so that the fertilizer supplied from the feed outlet (7) is pushed out to the extrusion opening (11) and is rotated in a state where it is fitted in the extrusion cylinder (12). Upon receiving the fertilizer extruded from the extrusion port (11) of the extrusion cylinder (12), the blower fertilizer application cylinder (6) A supply hopper (14) to be supplied to the supply port (13) of the peripheral portion and a blast device (80) for blowing conveying air to the start end portion of the extrusion tube (12) are provided, and from the outlet (7) The fertilizer is supplied to the blown fertilizer tube (6) while extruding the inside of the push tube (12) by rotating the extrusion spiral (10) and blowing air by the blast device (80). Of fertilizer.

  The fertilizer from the feeding port (7) fed from the feeding device (3) is supplied to the pushing port (16) of the extrusion cylinder (12) having the extrusion spiral (10), and the rotation of the extrusion spiral (10). As a result, the air blowing force blown into the pushing cylinder (12) from the air duct (17) constituting the blowing device (80) through the blowing pipe (81) is pushed through the pushing cylinder (12) to the rear side. In response, the feed is supplied from the extrusion port (11) to the supply port (13) of the supply hopper (14) of the lower blast fertilizer tube (6). The blown air blown from the blower (4) is blown so as to branch to each blown fertilizer tube (6) through the air duct (17), and is supplied to the blown fertilizer tube (6) from the supply port (13). Fertilizer is sprayed to the rear fertilizer hose (5).

  Although the air blown into the blower fertilizer tube (6) is to be blown partially toward the upper supply port (13), the blower device (80) is placed in the push tube (12). Since the extruding and conveying action is performed by the blast pressure from the air, the air is supplied from the extruding cylinder (12) to the blowing fertilizer cylinder (6) through the supply hopper (14). Part of the air flow is prevented from flowing back to the hopper (14) or the extrusion cylinder (12) side.

  Moreover, on the inner peripheral surface of the extrusion cylinder (12) communicating with the extrusion port (11) at the upper end of the supply hopper (14), the rotation of the spiral blade (9) that is integrally formed with the spiral shaft (8) and rotates. An extrusion helix (10) that rotates with its outer peripheral edge approaching the inner peripheral surface of the extrusion cylinder (12) formed between the pushing port (16) and the extrusion port (11), and this extrusion helix (10) The wind pressure blown into the supply port (13) is immediately blown into the upper feed port (7) side or escapes because it is partitioned by the fertilizer that is pushed into and transferred by being fitted to the spiral interval portion of It is blocked and effectively maintains the blast conveying force toward the rear fertilization hose (5) in the blast fertilizer tube (6). And since the conveyance in the said extrusion cylinder (12) is forcibly performed uniformly by a pushing spiral (10), an exact fertilization effect | action is performed.

  According to a second aspect of the present invention, the blower device (80) that blows the conveying air to the start end of the extrusion tube (12) has a branch communication from the air duct (17) that blows air to the blowing fertilizer tube (6). The fertilizer applicator according to claim 1, wherein the fertilizer is provided so as to be blown through a blower pipe (81).

  As a blast device (80) for blowing air to the start end of the extrusion cylinder (12) of each feeding device (3), an air duct (17) disposed at the lower portion of the feeding device (3) Using a part, it communicates with the inside of the extrusion cylinder (12) through a blow pipe (81) that is directly branched from the air duct (17).

  And while blowing air from this air duct (17) to each ventilation fertilizer fertilizer cylinder (6), it is made to branch air to each extrusion cylinder (12) via a ventilation pipe (81), and this extrusion cylinder (12) The fertilizer fed in is conveyed to the extrusion port (11) side by the blast from the blower pipe (81) and is conveyed by the extrusion spiral (10) rotating in the extrusion cylinder (12).

  The fertilizer extruded into the supply hopper (14) in this way is supplied from the supply port (13) at the lower end of the supply hopper (14) into the blast fertilizer cylinder (6), and then from the air duct (17). The fertilizer is transferred to the fertilizer hose (5) by the blown air force. The fertilizer transfer in the blower fertilizer tube (6) is carried by the blowing force directly branched from the air duct (17), and is branched from the air duct (17) to the extruded tube (12). (6) By conveying the inside with the conveyance by rotation of the extrusion spiral (10), it is possible to prevent the reverse flow of the fertilizer to be fertilized and conveyed in the blower fertilizer cylinder (6) to the supply hopper (14) side.

  In the invention according to claim 3, in the seedling planting interlocking of the seedling planting device (32), the timing of the blast to the extrusion cylinder (12) by the blast device (80) is determined by the planting of the seedling planting device (32). The fertilizer applicator according to claim 1 or 2, wherein the fertilizer is configured so as to squirt when the plant (48) is planted and is set to be capable of stopping the blast when planting is interlocked.

  In the fertilization form in which the squirting action of the squirting device (80) is made to act on the extrusion cylinder (12) and the fertilizer is fed out, the squirting action of the squirting device (80) is not always continued. By operating in an intermittent fountain form that blasts only when needed for the blast action, blast loss is reduced and efficient fertilization and conveyance is attempted using a small blower.

  Air blown into the extrusion cylinder (12) through the blower pipe (81) of the blower device (80) is made by using an air valve (87) provided in the feed pipe (81), a seedling sensor (88), and a fertilizer. Opening and closing control is performed by detection of the clogging sensor (90) or the like. When the blast device (80) is configured to send a high wind pressure, such as an air compressor, an air valve (87) such as a needle valve is provided on the blower pipe (81).

  When the seedling planting sensor (88) detects the seedling planting operation state of the seedling planting device (32), or when the fertilization sensor (92) detects the fertilization operation state of the fertilizer application device (33) (FIG. 7, step S1). ), The air valve (87) in the open position is closed via the solenoid in response to an operation output from the controller (91) (S2). Further, when the seedling planting sensor (88) does not detect the seedling planting operation state or when the fertilization sensor (92) does not detect the fertilization operation state of the fertilizer application (33) (S3), an air valve is generated by an operation output. (87) can be opened (S4), the residual fertilizer in the extrusion cylinder (12) can be conveyed to the supply hopper (14), and the inner peripheral surface of the extrusion cylinder (12) can be swept.

  According to a fourth aspect of the present invention, the end portion of the extrusion helix (10) is opened to a form having a low conveyance resistance by passing over the upper portion of the supply hopper (14). A clogging sensor (82) for detecting fertilizer clogging is provided, and fertilization of the fertilizer application (33) is provided so as to be able to be stopped by detecting the clogging of fertilizer by the clogging sensor (82). Or a fertilizer applicator described in item 1.

  The fertilizer supplied to the extrusion cylinder (12) from the delivery port (7) of the feeding device (3) through the push-in port (16) is extruded and supplied to the extrusion port (11) by the rotation of the extrusion spiral (10). Supplied to the hopper (14). The extrusion helix (10) rotating in the extrusion cylinder (12) has a spiral blade (8) in which the terminal edge of the spiral blade (9) is formed in an open form at a position directly above the center of the supply hopper (14). ) Of the end bearing portion of the helical shaft (8) or the side edge portion of the bearing case and the end edge portion of the spiral blade (9). A large open space is formed between the two.

  For this reason, when the fertilizer extruded by the extrusion helix (10) is pushed out to the upper central part of the supply hopper (14), the fertilizer is released from the terminal edge of the spiral blade (9), and immediately, the supply hopper (14 ) Dropped into the inside. Part of the fertilizer is pressed against the end bearing portion of the helical shaft (8), the side surface of the bearing case, and the like, and is difficult to be formed in a piled or agglomerate state. Smooth supply and discharge of fertilizer to the tube (6).

  The supply hopper (14) is provided with a clogging sensor (82). When fertilizer is retained in the supply hopper (14) and detected by the clogging sensor (82) (FIG. 8, S5), The fertilization operation can be stopped by setting the fertilization clutch (72) of the fertilization drive shaft (67) that transmits the fertilizer application (33) to the cut position.

  The invention according to claim 5 is a fertilization interlocking shaft (66) for interlocking the feeding roll (2) and the spiral shafts (8) at the lower side of each fertilizer application (33) in the multi-row fertilization form. ) Are arranged in a parallel form across the left and right lateral direction that is the width direction of the vehicle body (26), and a fertilization drive shaft (67) that links these fertilization interlocking shafts (66). ) Mechanism and a spiral drive shaft (70) mechanism that interlocks the spiral interlocking shaft (21) with a substantially parallel form on both the left and right sides with respect to the center line (L) portion of the vehicle body (26). The fertilizer applicator according to any one of claims 1 to 4, wherein the fertilizer applicator is arranged in a symmetrical form.

  The feeding roll (2) shaft (49) of each fertilizer applying device (33) in a side-by-side configuration includes a fertilizer driving shaft (67) interlocked from a rear wheel shaft interlocking mechanism (73) that transmits and rotates the rear wheel (27), and fertilizer application. It is transmitted and rotated via an interlocking shaft (66) or the like.

  Further, the extrusion helix (10) of the extrusion cylinder (12) is transmitted and rotated through a helical drive shaft (70) linked to the PTO shaft (68) of the mission case (29), a helical linkage shaft (21), and the like. Is done. Then, while feeding the fertilizer in the fertilizer hopper (1) by the rotation of the feeding roll (2), the fed fertilizer is extruded and conveyed by the rotation of the extrusion spiral (10), and the blower fertilizer cylinder (5) communicates with the fertilizer hose (5). The feed is fed to 6) and multi-row fertilization is performed for each blast fertilizer cylinder (6).

  According to the first aspect of the present invention, a part of the conveying air is fed from the air duct (17) to each extrusion cylinder (12), so that the fertilizer fed out of the extrusion cylinder (12) 12) The inside of the extrusion cylinder (12) is conveyed by the extrusion helix (10) rotating in the inside and the conveying air blown from the blowing device (80 air duct (17)), and from the supply hopper (14). It is supplied and conveyed to the blower fertilizer cylinder (6) and fertilized and conveyed to the fertilizer hose (5), so that fertilizer retention in the extruded cylinder (12) can be prevented, and a set amount of fertilizer can be fertilized accurately. Smooth fertilization action can be performed and fertilization performance can be improved.

  In particular, the fertilizer of the extrusion cylinder (12) can be smoothly conveyed by extrusion by the extrusion action by the extrusion spiral (10) and the blast action by the blast apparatus (80), and the extrusion cylinder (12). Even if the conveying wind in the blower fertilizer tube (6) may flow backward, the flow force acting on the push tube (12) counteracts the counterflow wind force to reduce the supply hopper (14) and the blower fertilizer. The fertilizer feeding and conveying force to the cylinder (6) side is effectively maintained, and smooth and accurate fertilizer feeding is performed.

  In addition to the effect of the invention described in claim 1, the invention described in claim 2 provides each feeding device (3) as a blast device (80) that blows air to the start end of the extrusion tube (12). From the air duct (17) of the air blowing form that sends the air to the air blowing cylinder (6) that receives the feed of the fertilizer and blows and conveys the air, the air blowing pipe (81) is configured to communicate with the air duct (17). The blower fertilizer cylinder (6) and the extrusion cylinder (12) are blown and the fertilizer is blown to the blower fertilizer cylinder (6) and the extrusion cylinder (12), and the fertilizer is fed to the blower fertilizer cylinder (6) and blown. The fertilizer transfer hose (5) in the fertilizer tube (6) is fertilized and conveyed, and the air duct (17) is shared for blowing air to the blower fertilizer tube (6) and for blowing air to the extrusion tube (12). And in a parallel form along the parallel direction of each feeding device (3), The form of the fertilizer apparatus (33) configured to position the air pipe (81) can be a simple configuration shortened from.

  In addition to the effect of the invention described in claim 1 or 2, the invention described in claim 3 provides an air valve (87) for the blower pipe (81) when the seedling planting sensor (88) detects the seedling planting stoppage. Opening can blow air into the extruded cylinder (12) through the blower pipe (81) only when seedling planting and fertilization are not performed, so that the conveying wind force for guiding the fertilizer is weakened. The fertilizer can be supplied to the field scene accurately and stably. Or the output of a blower (4) can be made small and an air duct (17) can be reduced in size.

  Then, the blast operation of the blast apparatus (80) is configured to be performed when the seedling planting work and the fertilization work are stopped, thereby blasting the start end of the extruded cylinder (12). Thus, the fertilizer remaining in the extrusion helix (12) where the extrusion helix (10) is stopped is blown out to the supply hopper (14) side by the blast from the blower pipe (81), and the extrusion cylinder (12 The residual fertilizer in) is discharged to the blast fertilizer cylinder (6).

  The blast blowing from such a blast device (80) drives the blower (4) when the seedling planting work or the fertilization work is stopped, and blows air from the air duct (17) to the blow pipe ( 81) can be guided to the extrusion cylinder (12), and the remaining fertilizer in the extrusion cylinder (12) can be swept and maintained in a clean state.

  In addition to the effect of the invention according to any one of claims 1 to 3, the invention according to claim 4 allows the terminal end of the extrusion helix (10) to pass through the front and rear center of the supply hopper (14). Therefore, it is difficult for the fertilizer to adhere to the spiral shaft (8) portion of the extruded spiral (10), and the fertilizer is pressed against the bearing portion at the end of the spiral shaft (8) and the bearing side surface, thereby supplying the extruded fertilizer. Supply to the hopper (14) can be performed smoothly and accurately.

  Moreover, since the clogging sensor (82) is provided in the supply hopper (14), when this clogging sensor (82) detects, the fertilizer (33) stops and the working strip | line which does not supply fertilizer arises. This will prevent the situation and create a uniform crop-growing soil.

  In addition to the effect of the invention of any one of claims 1 to 4, the invention of claim 5 is a fertilizer of a multi-row fertilizer configuration in which a large number of fertilizer application devices (33) are arranged side by side. The fertilizer interlocking shaft (66) that transmits the feeding roll (2) shaft (49) of each fertilizer application (33) and the spiral interlocking shaft (21) that interlocks the spiral shaft (8) of each extrusion spiral (10). Since the vehicle body (26) is arranged in a parallel form across the lateral direction along the width direction, in combination with the side-by-side form of the fertilizer application device (33), the configuration is simply configured, and each fertilizer is applied. The interlocking configuration for the device (33) can be shortened to facilitate the interlocking configuration.

  In addition, since the fertilization drive shaft (67) mechanism and the spiral drive shaft (70) mechanism for these interlocking shafts (66) and (21) are arranged in a substantially bilaterally symmetrical form, the laterally wide body of the multi-row fertilization form is provided. (26) As a whole, it is easy to maintain a weight balance in the left-right direction, and it is possible to achieve a smooth work running by achieving a left-right balance such as transmission vibration between these.

The side view of a seedling transplanter. The top view of a seedling transplanter. The side view of a fertilizer application. The front view of a fertilizer applicator. The expanded sectional view (A) of a fertilizer application part, the sectional side views (B) and (C) which show the attachment or detachment state of an air duct. The block diagram of the one part control part of the fertilizer application. The flowchart of the partial control part. The flowchart of the partial control part.

  Based on the drawings, the seedling transplanting machine has a front wheel 25 steered by operating the steering handle 24 mounted on the front front axle housing of the vehicle body 26 and a rear wheel 27 having a large rotation diameter mounted on the rear axle housing. A tractor vehicle body 26 of a four-wheel drive type that can be driven and rotated via a transmission mechanism such as an engine 28 and a transmission case 29, and the like is moved up and down by the expansion and contraction of a lift cylinder 30 at the rear part of the vehicle body 26. The seedling planting device 32 is connected through a lift link 31 having a parallel link shape.

  A rear floor 20 is formed on the rear side of the driver's seat 18 on the vehicle body 26, and a fertilizer application device 33 is mounted. Side floors 34 are formed on both the left and right sides of the vehicle body 26 so as to cover from the upper part of the front wheel 25 to the rear fender 19 part of the upper part of the rear wheel 27, and a sub-floor 35 is formed outside the floors 34. 35, the rider moves to the rear floor 20 side while taking out the mat seedlings and the fertilizer bags loaded on the auxiliary seedling rack 37 on the outside of the front end as the passenger moves on the upper surface, and seedlings of the seedling planting device 32 The seedling can be replenished to the tank 36, and the fertilizer can be replenished to the fertilizer hopper 1 of the fertilizer application device 33.

  The seedling planting device 32 arranges the center float 38 and the side floats 39 on the left and right side portions, supports the seedling planting frame 40, and leveles the planted soil surface while sliding on the soil surface. . A seedling tank 36 in the form of a number corresponding to a multi-row planting arranged horizontally and widely on this seedling planting frame 40 is supported with a front rising slope, and a guide rail 41 formed along the rear lower end of the seedling tank 36 A mating device 43 that is operated to face each seedling inlet 42 is arranged, and a mating claw 44 at the tip of the planting device 43 is operated to the seedling inlet 42 to be fed out from the seedling tank 36. The seedlings are separated and held and are planted in a multi-row planting form on the soil surface.

  In the front side of the seedling planting device 32, an allowance 85 for leveling the soil surface on the front side of each float 38, 39 is provided and can be lifted up and down by the vertical rotation of the lift link 31 as the seedling planting device 32 is lifted and lowered. The leveling action by the floats 38 and 39 is facilitated.

  The fertilizer application 33 is mounted at the rear end of the vehicle body 26 at the front side of the seedling planting device 32 in the form of multi-row planting, and enables fertilization work simultaneously with the seedling planting work. A fertilizer grooving device 45 is provided in the vicinity of the front of the seedling planting position of each float 38, 39 of the seedling planting device 32, and the fertilizer hose 5 is exposed to the grooving portion formed by the grooving device 45. Then, the fertilizer guided through the fertilizer hose 5 from the fertilizer application device 33 is caused to flow down into the formed groove by the groover 45 to perform the fertilization work. This groove is formed along the planted shoots and can be covered with a soil covering device or the like immediately after fertilization.

  A rear frame 46 is provided at the rear end portion of the vehicle body 26 at the center position between the rear fenders 19 on both the left and right sides. The rear floor 20 is supported on the rear frame 46, and the front end portion of the lift link 31 is moved up and down. It is connected so that it can rotate and rotate. Further, a rear floor 20 is formed between the left and right rear fenders 19 so as to cover the rear side portion of the driver's seat 18 over the full width direction of the seedling tank 36. A horizontal air duct 17 is supported and attached to a support frame 47 installed between the left and right rear frames 46, and a rear floor 20 made of a board material is laid on the upper side of the air duct 17.

  A rear end upper portion of the rear fender 19 is connected to the lower surface of the lateral end portion of the rear floor 20. The rear floor 20 and the air duct 17 are formed to have a width substantially equal to the lateral width of the seedling tank 36, and each fertilizer 33 is disposed on the upper surface of the rear floor 20, and the blower 4 is disposed at one end of the air duct 17. Air can be blown in, and at the other end, an extraction duct 48 for taking out the residue outside the machine, an on-off valve 89, etc. are provided, and this on-off valve 89 is closed during fertilization work, When the residue is taken out, the residue (fertilizer) can be taken out from the take-out duct 48 by opening the blower 4 and blowing air from the blower 4.

  The fertilizer application device 33 is arranged side by side in the form of the same radix as the number of seedlings of the seedling planting device 32 connected to the rear part of the vehicle body 26, and the upper fertilizer is rotated by rotating the feeding roll 2 around the roll shaft 49. Fertilizer made of powder and granules supplied from the hopper outlet 15 of the hopper 1 is fed to the lower outlet 7 side.

  The fertilizer hopper 1 is integrally formed for each of a plurality of units, and a funnel 50 and a hopper outlet 15 are arranged and formed at the bottom, and the feeding of the upper part of the feeding case 51 of the feeding device 3 facing each hopper outlet 15 is carried out. Communicate with the mouth 52. An openable / closable shutter 53 is provided at the hopper outlet 15 portion. The hopper outlet 15 located in the central part of the fertilizer application hopper 1 and the roll shaft 49 located in the central part of the feeding device 3 are arranged on the vertical straight line Y in a side view.

  An extrusion case 54 having an extrusion cylinder 12 formed therein and having an extrusion spiral 10 inside is disposed below the feeding case 51, and fertilizer flowing down from the feeding outlet 7 is received by the pushing port 16, and the extrusion spiral is formed. 10 is extruded to the extrusion port 11 at the rear end and supplied to the lower supply port 13. The supply port 13 is formed at a position biased rearward with respect to the upper push-in port 16, and communicates in the front-rear direction via an extrusion cylinder 12 that engages and rotates the helical shaft 8.

  The front and rear end surfaces of the extruded cylinder 12 form openings 55 and 56, the helical shaft 8 is fitted and inserted from the front side of the opening 55, and the bearing metal 57 is fitted to the front and rear ends of the helical shaft 8. , 58 are fitted into the openings 55 and 56 to be supported. The bevel gear 60 of the gear transmission case 59 is fitted to the rear end portion of the spiral shaft 8 and is transmitted and rotated from the interlocking shaft 21. The extrusion interval L between the end edges of the pushing port 16 and the extrusion port 11 of the extrusion cylinder 12 is set to an appropriate length, and the spiral blades 9 of several pitches are rotated in this extrusion interval L part. The spiral blade 9 is integrally formed around the portion of the spiral shaft 8, and rotates with the outer peripheral edge of the spiral blade 9 approaching the inner peripheral surface of the extrusion cylinder 12, and the fertilizer is pushed in by the rotation of the spiral shaft 10. When extruding from the extrusion port 11 to the extrusion port 11 side, the wind pressure of the blower fertilizer tube 6 is configured to reduce the amount of escape air that escapes from the extrusion port 11 to the pushing port 16 side.

  It is also possible to form a brush with a brushed shape on the outer peripheral edge of the spiral blade 9, and the fertilizer can be extruded and conveyed by sliding the tip of the brush against the inner peripheral surface of the extruded cylinder 12. It can be carried out smoothly and accurately, and the residual fertilizer can be reduced.

  In addition, the supply hopper 14 that forms the extrusion port 11 and the blower fertilizer tube 6 are integrally formed at the lower portion of the push case 54, and the blower port 61 at the front end of the blower fertilizer tube 6 is formed as a duct of the air duct 17. It is configured to be fitted and connected to the mouth 62 so as to be detachable, and a ball seat 64 is formed around the opening 63 at the rear end of the blower fertilizer tube 6 so that the hose joint 22 can be freely changed in direction. Let them connect. The base end portion of the flexible fertilization hose 5 is detachably connected to the outlet 23 of the hose joint 22. The supply hopper 14 forming the supply port 13 is provided with an anti-blow plate 65, and the upper edge is supported so as to be pivotable up and down around the plate shaft 66, and the wind force blowing up the lower supply port 13 is strong. In this case, the blowback prevention plate 65 is pushed upward to close the upper extrusion port 11 so as to suppress the blowing wind force into the extrusion cylinder 12.

  An air duct 17 that guides air to each of the air supply fertilizer cylinders 6 is located along the left and right lateral direction at the lower side of each of the extrusion cylinders 12 and passes through the hopper outlet 15, the roll shaft 49, the push-in opening 16, and the like. At the bottom end of the vertical straight line Y. The air duct 17 is arranged and configured to be positioned at the center.

  The air duct 17 fits each duct port 62 to the air blowing port 61 of the blower fertilizer tube 6 and blows the wind pressure of the air duct 17 toward the fertilizer hose 5 (see FIG. 5B). By removing the port 62 from the blower port 61 and making the duct port 62 face downward (see FIG. 5C), the residue in the air duct 17 and the deposits attached around the duct port 62 are cleaned. can do.

  The roll shaft 49 of each feeding device 3 is transmitted and rotated from a fertilization interlocking shaft 66 arranged at the lower part of the rear floor 20. The fertilization interlocking shaft 66 is transmitted through a fertilization drive shaft 67 driven from a transmission device in the rear axle housing 73. The transmission device in the rear axle housing 73 is interlocked from the mission case 29 side via the rear wheel interlocking shaft 74, and the interlocking shaft 75 that is transmitted by the operation of the fertilization clutch 72 is interlocked with the fertilization drive shaft 67.

  Further, the interlocking shaft 21 that interlocks the spiral shafts 8 is configured to transmit and rotate from the bevel gear 69 in the middle of the PTO shaft 68 that interlocks the seedling planting device 32 via the spiral interlocking shaft 70 and the bevel gear 71. The blower 4 is configured such that the fan is rotated by an electric motor 76.

Here, the fertilizer is fed from the feeding device 3 through the fertilizer hopper 1 for containing the fertilizer, the feeding device 3 for feeding the fertilizer supplied from the fertilizer hopper 1 by the rotation of the feeding roll 2, and the blower 4. In a fertilizer applicator that constitutes a blast fertilizer cylinder 6 that receives fertilizer and blows and conveys it to the fertilizer hose 5,
An extrusion helix 10 in which a spiral blade 9 is formed on the peripheral surface of the helical shaft 8 is fitted between the feed outlet 7 of the feeding device 3 and the blower fertilizer cylinder 6, and the extrusion helix 10 is fitted inside the extrusion cylinder 12. And the fertilizer extruded from the extrusion port 11 of the extrusion cylinder 12 to receive the fertilizer that is rotated so that the fertilizer supplied from the feed outlet 7 is pushed out to the extrusion port 11 and received by the blowing fertilizer. A supply hopper 14 to be supplied to the supply port 13 in the upper peripheral portion of the cylinder 6 and a jet device 80 for blowing the conveying air to the start end of the extrusion cylinder 12 are provided to extrude the fertilizer flowing down from the outlet 7. It is set as the structure of the fertilizer application | coating apparatus of the fertilizer characterized by supplying to the ventilation fertilizer cylinder 6, pushing the inside of the extrusion cylinder 12 by rotation of the spiral 10 and the ventilation by the blowing apparatus 80. FIG.

  The fertilizer from the feeding port 7 fed from the feeding device 3 is supplied to the pushing port 16 of the pushing cylinder 12 having the pushing helix 10 and is pushed out to the rear side in the pushing cylinder 12 by the rotation of the pushing helix 10. In addition, the supply port 13 of the supply hopper 14 of the blower fertilizer cylinder 6 on the lower side from the extrusion port 11 receives the blowing force blown from the air duct 17 constituting the blowing device 80 through the blower pipe 81 and into the extrusion tube 12. Supplied to.

  The blown air blown from the blower 4 is blown so as to branch to each blown fertilizer tube 6 through the air duct 17, and the fertilizer supplied from the supply port 13 to the blown fertilizer tube 6 is fed to the rear fertilizer hose 5 side. Jet. The blown air blown into the blower fertilizer cylinder 6 is partially blown into the upper supply port 13 side, but the push-out conveying action due to the jet pressure from the blowing device 80 is introduced into the push-out cylinder 12. Since the air is blown from the extrusion cylinder 12 through the supply hopper 14 to the air supply fertilizer cylinder 6 side, a part of the air flows back from the air supply fertilizer cylinder 6 to the supply hopper 14 and the extrusion cylinder 12 side. To be prevented.

  In addition, on the inner peripheral surface of the extrusion cylinder 12 communicating with the extrusion port 11 at the upper end of the supply hopper 14, the rotation outer peripheral edge portion of the spiral blade 9 that is integrally formed with the spiral shaft 8 is rotated with these insertion ports 16. Form which is partitioned by the extrusion spiral 10 which is rotated close to the inner peripheral surface of the extrusion cylinder 12 formed between the extrusion port 11 and the fertilizer which is fitted into the spiral interval portion of the extrusion spiral 10 and is extruded and transferred. Therefore, it is possible to prevent the wind pressure blown into the supply port 13 from being immediately blown into the upper feed outlet 7 side or to escape, so that the air feeding force to the rear fertilizer hose 5 side in the blow fertilizer ferrule 6 is effective. To maintain. And since the conveyance in the said extrusion cylinder 12 is forcibly performed uniformly by the pushing spiral 10, the exact fertilization effect | action is performed.

  The blowing device 80 that blows the conveying air to the start end of the extrusion cylinder 12 is provided so as to be blown through a branch communication air pipe 81 from the air duct 17 that blows air to the blowing fertilizer cylinder 6.

  The air duct 17 is used by using a part of the air blown through the air duct 17 disposed at the lower portion of the feeding device 3 as a blowing device 80 that blows the blowing air to the start end portion of the extrusion cylinder 12 of each feeding device 3. It communicates with the inside of the extrusion cylinder 12 through a blower pipe 81 that is directly branched from. Then, air is blown from the air duct 17 to each blower fertilizer cylinder 6 and is also blown to each extrusion cylinder 12 via a blow pipe 81, and the fertilizer fed into the extrusion cylinder 12 is sent to the blower air. While being conveyed to the extrusion port 11 side by the blast from the pipe 81, it is conveyed by the extrusion spiral 10 that rotates within the extrusion cylinder 12.

  The fertilizer extruded into the supply hopper 14 in this manner is supplied from the supply port 13 at the lower end of the supply hopper 14 into the blower fertilizer cylinder 6 and is sent to the fertilizer hose 5 by the blowing force blown out from the air duct 17. Fertilized and transported. The fertilizer conveyance in the blower fertilizer cylinder 6 is conveyed by the blowing force that is directly branched from the air duct 17 and is also blown from the air duct 17 to the extrusion cylinder 12 to rotate the extrusion spiral 10 in the extrusion cylinder 6. By carrying along with the carrying by, it is possible to prevent the reverse flow of the fertilizer to be fed and fed in the blower fertilizer cylinder 6 to the supply hopper 14 side.

  Moreover, in the seedling planting interlocking of the seedling planting device 32, the blast timing to the extrusion cylinder 12 by the squirting device 80 is squirted when the planting device 48 of the seedling planting device 32 stops planting, and at the time of planting interlocking. It is configured to be interlocked by setting the blast stop to be possible.

  In the fertilizer application mode in which the blasting action of the blasting device 80 is applied to the extruded cylinder 12 to feed the fertilizer, the blasting action of the blasting device 80 is not always continued, and is necessary for the blasting action. By operating in an intermittent fountain form that blasts only when it is done, blast loss is reduced and efficient fertilization and conveyance is attempted using a small blower.

  The air blown into the extrusion cylinder 12 through the blower pipe 81 of the blowing device 80 is a mode in which the air valve 87 provided in the feed pipe 81 is controlled to open and close by detection of the seedling planting sensor 88, the fertilizer clogging sensor 90, and the like. It is said. When the blowing device 80 is configured to send a high wind pressure, such as an air compressor, an air valve 87 such as a needle valve is provided on the blower pipe 81.

  When the seedling planting sensor 88 detects the seedling planting operation state of the seedling planting device 32, or when the fertilization sensor 92 detects the fertilization operation state of the fertilizer application device 33 (FIG. 7, step S1), the air valve 87 in the open position. Is closed via a solenoid in response to an operation output from the controller 91 (S2). When the seedling planting sensor 88 does not detect the seedling planting operation state, or when the fertilization sensor 92 does not detect the fertilization operation state of the fertilizer application device 33 (S3), the air valve 87 is opened by an operation output. (S4), the residual fertilizer in the extrusion cylinder 12 can be conveyed to the supply hopper 14, and the inner peripheral surface of the extrusion cylinder 12 can be swept.

  Further, the end portion of the extrusion helix 10 is placed on the upper side of the supply hopper 14 to be opened in a form with less conveyance resistance, and a clogging sensor 82 for detecting fertilizer clogging in the supply hopper 14 is provided. The fertilizer application 33 is provided so that it can be stopped by detecting the clogging of the fertilizer by the clogging sensor 82.

  The fertilizer supplied to the extrusion cylinder 12 from the delivery port 7 of the delivery device 3 through the push-in port 16 is extruded to the extrusion port 11 by the rotation of the extrusion spiral 10 and supplied to the supply hopper 14. The extrusion helix 10 rotating in the extrusion cylinder 12 has an end edge of the spiral blade 9 formed in an open form at a position directly above the center of the supply hopper 14, and in front of the end bearing portion of the spiral shaft 8 in the conveying direction. A large open gap is formed between the terminal bearing portion of the helical shaft 8 or the side surface portion of the bearing case and the terminal edge portion of the spiral blade 9 at a position where the protruding portion is shortly formed in the side position. Yes.

  For this reason, when the fertilizer extruded by the extrusion spiral 10 is extruded to the upper center portion of the supply hopper 14, the fertilizer is released from the terminal edge of the spiral blade 9 and immediately dropped into the supply hopper 14. Part of the fertilizer is pressed against the end bearing portion of the spiral shaft 8 or the side surface of the bearing case, and is not easily formed into a piled or agglomerated state. Fertilizer is supplied from the supply port 13 of the supply hopper 14 to the blower fertilizer cylinder 6. Smooth supply and discharge.

  The supply hopper 14 is provided with a clogging sensor 82. When fertilizer is accumulated in the supply hopper 14 and detected by the clogging sensor 82 (FIG. 8, S5), a fertilizer application drive that transmits the fertilizer application 33 is provided. The fertilization work can be stopped by setting the fertilization clutch 72 of the shaft 67 to the cut position.

  Furthermore, in the lower side part of each fertilizer 33 of the said multi-row fertilization form, the fertilization interlocking | linkage axis | shaft 66 which interlock | cooperates the said delivery roll 2, and the spiral interlocking | linkage axis | shaft 21 which interlock | cooperates each said spiral axis | shaft 8 The fertilization drive shaft 67 mechanism that is arranged in a parallel form across the horizontal direction that is the direction and interlocks the fertilization interlocking shafts 66 and the helical drive shaft 70 mechanism that interlocks the spiral interlocking shafts 21 are provided on the vehicle body 26. With respect to the center line L part, it is arranged in a substantially parallel form on both the left and right side parts and a substantially symmetrical form.

  The feeding roll biaxial shaft 49 of each fertilizer application device 33 in a side-by-side configuration is transmitted and rotated via a fertilizer driving shaft 67 and a fertilizer interlocking shaft 66 that are interlocked from a rear wheel shaft interlocking mechanism 73 that transmits and rotates the rear wheel 27. Further, the extrusion spiral 10 of the extrusion cylinder 12 is transmitted and rotated via the spiral drive shaft 70 and the spiral interlocking shaft 21 that are interlocked with the PTO shaft 68 of the mission case 29. Then, while feeding the fertilizer in the fertilizer hopper 1 by the rotation of the feeding roll 2, this fed fertilizer is extruded and conveyed by the rotation of the extrusion helix 10, and fed to the blower fertilizer tube 6 communicated with the fertilizer hose 5 to be fed to each blower fertilizer. Multi-row fertilization for each cylinder 6 is performed.

DESCRIPTION OF SYMBOLS 1 Fertilizer hopper 2 Feeding roll 3 Feeding device 4 Blower 5 Fertilizer hose 6 Air supply fertilizer cylinder 7 Feed outlet 8 Spiral shaft 9 Spiral blade 10 Extrusion spiral 11 Extrusion port 12 Extrusion cylinder 13 Supply port 14 Supply hopper 15 Hopper exit 16 Push port 17 Air duct 18 Driver's seat 19 Rear fender 20 Rear floor 21 Interlocking shaft 66 Fertilization interlocking shaft 67 Fertilization driving shaft 70 Spiral interlocking shaft 80 Blowing device 81 Blowing pipe 82 Clogging sensor 89 Open / close valve

Claims (5)

Through the fertilizer receiving hopper (1) that stores the fertilizer, the feeding device (3) that feeds the fertilizer supplied from the fertilizer hopper (1) by the rotation of the feeding roll (2), and the ventilation from the blower (4), In a fertilizer applicator that constitutes a blast fertilizer cylinder (6) that receives fertilizer fed from a feeding device (3) and blows and conveys it to a fertilizer hose (5),
An extrusion spiral (10) in which a spiral blade (9) is formed on the peripheral surface of the spiral shaft (8) between the feed outlet (7) of the feeding device (3) and the blower fertilizer tube (6), Extrusion cylinder (6) that is rotated so that the extrusion spiral (10) is fitted inside the extrusion cylinder (12) and the fertilizer supplied from the delivery port (7) is extruded to the extrusion opening (11). 12), a supply hopper (14) that receives the fertilizer extruded from the extrusion port (11) of the extrusion tube (12) and supplies the fertilizer to the supply port (13) of the upper peripheral portion of the blowing fertilizer tube (6), A blower device (80) that blows conveying air at the start end of the extrusion tube (12) is provided, and the fertilizer flowing down from the delivery port (7) is rotated by the rotation of the extrusion spiral (10) and the blower device ( The fertilizer is supplied by supplying air to the blower fertilizer tube (6) while extruding the inside of the push tube (12). Fertilization device.   The blower device (80) for blowing the conveying air to the start end of the extrusion tube (12) blows it through a branch communication blower pipe (81) from the air duct (17) for blowing air to the blower fertilizer tube (6). The fertilizer applicator according to claim 1, wherein the fertilizer applicator is provided.   In the seedling planting interlocking of the seedling planting device (32), the timing of the blast to the extrusion cylinder (12) by the blast device (80) is determined when the planting device (48) of the seedling planting device (32) is stopped. The fertilizer applicator according to claim 1 or 2, wherein the fertilizer is configured so as to be squirted and set so that the squirting can be stopped at the time of planting interlocking.   A clogging sensor (82) that detects the clogging of fertilizer in the supply hopper (14) by opening the end portion of the extrusion helix (10) onto the upper side of the supply hopper (14) and opening it in a form with less conveyance resistance. The fertilizer applicator according to any one of claims 1 to 3, wherein the fertilizer application (33) can be stopped by detecting fertilizer clogging by the clogging sensor (82).   In the lower part of each fertilizer application device (33) in the multi-row fertilizer application form, a fertilization interlocking shaft (66) interlocking the operation roll (2) and a spiral interlocking shaft interlocking the spiral shafts (8) ( 21) are arranged in a parallel form across the lateral direction that is the width direction of the vehicle body (26), and a fertilization drive shaft (67) mechanism for interlocking these fertilization interlocking shafts (66), and a helical interlocking shaft ( 21) and the spiral drive shaft (70) mechanism that is interlocked with the center line (L) portion of the vehicle body (26) are arranged in a substantially parallel form on both the left and right sides and in a substantially left-right symmetric form. The fertilizer applicator according to any one of claims 1 to 4, wherein the fertilizer applicator is provided.

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