JP3552944B2 - Rice transplanter with fertilizer application - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rice transplanter with a fertilizer application device. Fertilizer The present invention relates to a technique for rationalizing the feed mechanism to be compact and the feed amount adjusting operation can be easily performed.
[0002]
[Prior art]
The fertilizer applicator mounted on the rice transplanter has a structure mounted on the planting device side disclosed in Japanese Patent Application Laid-Open No. Hei 5-316846, or a fertilizer device mounted on the rear side of the machine body disclosed in Japanese Patent Application Laid-Open No. Hei 10-304722. Various types, such as those having a structure to be used, are known. In any of the publications, a structure is adopted in which a predetermined amount of fertilizer in a hopper is sequentially fed by a feeding mechanism, and the fed fertilizer is supplied to a field from a ditcher provided in a planting device.
[0003]
[Problems to be solved by the invention]
The fertilizer applicator is provided with a mechanism for adjusting the amount of feed per unit time in the feed mechanism for each line in order to equalize the amount of fertilization in a plurality of lines or change the absolute amount. As shown in the former publication, the structure is such that the width of the concave portion of the feeding roll is adjusted by screwing operation, and there is an advantage that the adjustment width can be selected steplessly. However, in practice, it has been found that fine adjustment with very high accuracy is not required, so that the structure is complicated and the number of parts is increased. There was a feeling.
[0004]
[0005]
In view of the above circumstances, an object of the present invention is to rationalize the fertilizer feeding mechanism and the hopper structure, such as reducing costs and facilitating handling.
[0006]
[0007]
[Means for Solving the Problems]

〔Constitution〕
According to a first aspect of the present invention, in a rice transplanter with a fertilizer application device, a fertilizer supply device is provided below a hopper that stores fertilizer, and a feed mechanism that feeds a predetermined amount of fertilizer flowing down from the hopper is configured. A feeding roll in which a concave portion for entering fertilizer is formed, and a roll case that rotatably supports and accommodates the feeding roll,
A supply path for guiding the fertilizer flowing down from the hopper to the payout roll is opened. Opening posture And a shutter that can be switched to a closed position in which the supply path is shut off, and the shutter is housed in the roll case in any of these positions; The shutter is formed of a flexible plate material, and in the closed position, the shutter has a flat plate shape to block the supply path, and in the open position, the shutter is bent along the hopper inner wall. And retreat from the supply path It is characterized by the following.
[0008]
[0009]
No. 2 The invention is 1 In the present invention, a rod connected to the shutter protrudes from the roll case to the outside, and the pushing posture of the rod reveals the opening posture of the shutter, and the pulling out operation of the rod reveals the closing posture of the shutter. It is characterized by having such a configuration.
[0010]
No. 3 The invention is 2 In the invention, an insertion hole through which the rod in the roll case penetrates, a horizontally long hole long in the left-right direction having one end of a regular protruding position of the rod in a state where the shutter is mounted on the low case, and the other end of the long hole. And a vertically long hole extending in the vertical direction following the vertical line.
[0011]
No. 4 The invention is 3 The invention is characterized in that a cover member provided with an operation hole that allows only the push-pull movement of the rod at a normal position of the rod is detachably mounted on the roll case.
[0012]
No. 5 The invention is 1 ~ 4 In the invention, a plurality of the shutters are provided, and any one of the plurality of shutters is configured to supply a medicine.
[0013]
[0014]
[0015]
[Action]
According to the configuration of the first aspect, the shutter is always accommodated in the roll case, so that the shutter penetrates through the roll case as compared with a structure in which the shutter is exposed to the outside through the roll case to reveal the open position. Since the portion is reduced or eliminated, leakage of fertilizer, dust and the like from the outside is reduced or eliminated, and the sealing property is improved.
[0016]
[0017]
Claim 1 According to the configuration, the following operation can be obtained. The shutter is formed of a flexible plate material, Opening posture In this case, the shutter becomes a flat plate and shuts off the supply path, and in the closed posture, the shutter is bent along the inner wall of the hopper and retreats from the supply path, so that the shutter housing portion of the roll case does not protrude greatly outward. You can do so. That is, the shutter case interior structure can be realized without increasing the size of the roll case.
[0018]
Claim 2 According to the configuration, the rod connected to the shutter is protruded from the roll case to the outside, and the push-in operation of the rod causes the shutter to be opened. Opening posture And the closing posture of the shutter is made to appear by pulling out the rod, so that the shutter inside the case can be operated from the outside, which is convenient and for that purpose, it is formed on the roll case. The hole for rod penetration may be small, and the sealing performance can be improved. Further, since fertilization can be performed in a state where the rod is pushed in, it is unlikely that the rod protrudes during the fertilization work and gets in the way.
[0019]
Claim 3 According to the configuration described above, the insertion hole through which the rod in the roll case penetrates, the long hole in the left-right direction having one end of the regular projecting position of the rod in a state where the shutter is assembled to the roll case, Formed in a substantially L-shape consisting of a vertically long hole extending in the vertical direction following the other end of the roller case, so that the size of the hole in the roll case required for assembling and removing the shutter with a rod from the roll case can be reduced. It is possible to minimize it.
[0020]
That is, as will be described in detail in the embodiment, since the overall length of the shutter with a rod is longer than the dimension of the opening on the upper surface of the roll case, the assembling procedure is as follows. The shutter is taken out of the case from the vertically long hole, the up and down posture of the shutter is operated to a normal posture such as horizontal, and then the rod is set to the right and left position through the horizontally long hole. To remove, reverse the above procedure.
[0021]
Claim 4 According to the configuration described above, since the cover member having the operation hole that allows only the push-pull movement of the rod at the normal position of the rod is provided, the portion other than the rod insertion portion in the substantially L-shaped insertion hole formed in the roll case is provided. Can be closed, and it is possible to prevent leakage of fertilizer from the insertion hole, entry of dust, and the like, thereby improving sealing performance. The lid member is detachable from the roll case, and does not hinder the detachment of the shutter from the roll case when it is removed.
[0022]
Claim 5 According to the configuration, the supply path for guiding the fertilizer flowing down from the hopper to the feeding roll is opened. Opening posture And a plurality of shutters that can be switched to a closed position in which the supply path is shut off, Opening posture And the number of closing postures, the amount of feeding per unit time can be adjusted in a plurality of stages. The amount of fertilizer supplied to the field does not have to be strictly adjusted, but it has been found that it is sufficient if they are almost the same, and it is not necessary to require very strict precision. Instead of a screw-type stepless adjustment structure, it became possible to adopt a multi-stage switching type which has a relatively simple structure.
Since any one of the plurality of shutters is used for supplying the medicine, when the medicine applying device is provided, a part of the feeding mechanism for the fertilizing device can be used also for the fertilizing device, and the exclusive use for the medicine application can be performed. Can be omitted.
[0023]
[0024]

〔effect〕
Claim 1-5 In the rice transplanter with a fertilizer device described in any of the above, by adopting a stepped fertilizer amount adjustment structure with a case interior shutter that is familiar with the actual conditions of fertilizer work, while obtaining good sealing performance without fertilizer leakage and foreign matter contamination, The cost was reduced by simplifying the structure.
[0025]
Claim 1 In the rice transplanter with a fertilizer application device described in (1), the shutter is made of a flexible material, and the fertilizer supply path is intermittently switched between the bent position and the extended position, so that it is economical and without increasing the size of the roll case. There is an advantage that the shutter can be installed.
[0026]
Claim 2 In the rice transplanter with fertilizer applicator described in the above, by devising the rod connected to the shutter out of the case and pushing and pulling it, the rod through hole of the roll case can be made smaller and the case interior shutter is It was made to be convenient to operate with fingers.
[0027]
Claim 3 In the rice transplanter with the fertilizer application device described in the above, the hole for assembling and removing the shutter with the rod from the roll case to the roll case can be minimized, and the operability of attaching and detaching the shutter to and from the roll case without impairing the sealing property is excellent. I was able to. For example, in order to minimize the rod insertion hole, it is conceivable to connect the rod and the shutter to the roll case and then connect the rod and the shutter. The structure according to the present invention is more preferable because it is difficult to carry out, it is rather difficult to attach and detach, and the coupling mechanism such as a bolt is easily dropped and lost.
[0028]
Claim 4 In the rice transplanter with fertilizer applicator described in (1), it is possible to substantially eliminate the opening portion of the rod insertion hole by attaching a cover member with an operation hole that allows only the push and pull movement of the rod to the roll case. And the sealing property could be further improved.
[0029]
Claim 5 In the rice transplanter with fertilizer application device described in (1), the structure that adjusts the feed amount with multiple shutters can also be used as the dispensing mechanism for drug application, and the specifications of the fertilizer device can be changed economically and rationally to a fertilizer and drug application type. Thus, there is an advantage that the versatility is excellent.
[0030]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIGS. 1 and 2, an engine 3 and a transmission case 4 are provided at the front of a body provided with a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 that can be steered. And a seedling planting device 7 is connected to the rear part of the machine body via a link mechanism 6 so as to be able to move up and down freely to form a riding type rice transplanter. The seedling planting device 7 is configured to be six-row planting, and includes three planting transmission cases 8, a rotating case 9 rotatably supported on both left and right sides of the planting transmission case 8, and a rotating case 9 at both ends. It comprises a pair of planting claws 10 to be deployed, three ground floats 11, a seedling mounting table 12, and the like.
[0031]
Next, the fertilizer applicator A will be described.
As shown in FIG. 1 to FIG. 6, the fertilizer applicator A includes a hopper 13 that stores fertilizer that is a granular material, and a fertilizer that flows down from the hopper 13 and is fed to a fertilizer transfer path that is a fertilizer transfer path 14. Mechanism 15, which feeds the fertilizer sent by the fertilizer application hose 14 to the field, and feeds the fertilizer fed to the funnel unit 20 into the fertilizer hose 14 by wind power. It comprises a blower 16, a blower duct 17 for distributing and supplying wind generated by the blower 16 to a total of six fertilizing hoses 14, and the like.
[0032]
As shown in FIGS. 6 and 8, the feeding mechanism 15 includes a feeding roll R having a large number of recesses 24 a for fertilizer introduction formed on the outer circumference along the circumferential direction. It is arranged so as to be rotatable in a position above the roll case 20 in the roll case 18. The feeding roll R is configured to be driven and rotated by the engagement of a driven gear 19G integrally formed therewith with a driving gear 21G of a driving shaft 21 to which power is input.
[0033]
As shown in FIGS. 8 and 9, the feeding roll R is composed of a hollow rotary shaft 19 having a driven gear 19G formed at one end, and a total of six parts having two types of widths and two types of depths. The rolls r1 to r3 are configured so as to be externally fitted to rotate integrally. The first partial rolls r1, r1 at the center in the left-right direction and the second partial rolls r2, r2 at the second from the center are the same with a concave portion 24a having a small width and depth. The three-part rolls r3 and r3 are set to have a concave portion 24a having a large width and a large depth.
[0034]
On each of the partial rolls r1 to r3, a partition wall 24b is formed only on one of the left and right sides. The partition wall 24b is arranged so as to coincide with the left and right centers as the feeding mechanism. Each recess 24a is axially partitioned by disposing one partition ring 23 between the one endmost third partial roll r3 and the roll case 18. Reference numeral 22 denotes a brush that acts on each of the partial rolls r1 to r3.
[0035]
As shown in FIGS. 8 to 11, a shutter mechanism S including first to third partial shutters s <b> 1 to s <b> 3 that can be pushed and returned freely is arranged above the feeding roll R. The shutter mechanism S allows the fertilizer application amount per unit time to be adjusted in a plurality of stages by selectively setting whether one or more of the first to third partial rolls r1 to r3 are supplied with fertilizer. Things.
[0036]
Each of the partial shutters s1 to s3 has the same structure, and as shown in FIG. 12, if the second partial shutter s2 is used, a blocking plate that prevents the fertilizer from the hopper 13 from flowing down to the feeding roll R 26, and a rod-shaped operation unit 25 which is pushed and pulled by being picked with fingers. The blocking plate 26 is made of a spring plate and is elastically deformable in the vertical direction, and the operating portion 25 extends forward through an L-shaped insertion hole 79 formed in the roll case 18 when viewed in the front-rear direction. Have been. The blocking plate 26 may be a thin plastic plate, in short, any material having flexibility.
[0037]
As for the shutter operation, if the rod 25 is pinched (pulled out) and pulled out, the blocking plate 26 is positioned on the feed roll R to be in a closed posture in which the supply of fertilizer is shut off (see the left side in FIG. 11). If it is pushed in (rearward), the blocking plate 26 is bent upward and stored along the inner wall surface of the roll case 18, and only the thin rod 25 is positioned on the feeding roll R and the opening posture (the fertilizer is supplied) (See the right side of FIG. 11).
[0038]
Closing posture Then, the blocking plate 26 (an example of a shutter) becomes a horizontal flat plate to block the supply path w, and Opening posture In this configuration, the blocking plate 26 is bent by the guide portion 78 along the rear hopper inner wall and retreats from the supply path w. Opening posture However, while the blocking plate 26 is accommodated in the roll case 18, the roll case 18 is formed in a compact shape so as not to protrude backward.
[0039]
As shown in FIG. 23, an insertion hole 79 through which the rod 25 of the roll case 18 penetrates forward and backward is formed such that a regular projecting position of the rod 25 in a state where the partial shutters s1 to s3 are assembled to the roll case 18 is one end. It is formed in a substantially L-shape comprising a horizontally long hole 79b long in the left-right direction and a vertically long hole 79a long in the vertical direction following the other end of the horizontally long hole 79b. This allows the partial shutter s1 to be assembled and removed from the roll case 18 without any trouble, while having the minimum necessary number of holes.
[0040]
That is, in order to assemble the partial shutter s1, as shown in FIG. 24, the rod 25 is extended out of the case through the vertically long hole 79a and the blocking plate 26 is rolled in an oblique posture in which the rod 25 is lowered from the upper opening of the roll case 18. Put it in the case 18 and make it a horizontal posture. Then, the rod 25 is slid laterally through the horizontally long hole 79b, and the partial shutter s1 is set at a regular position where the rod 25 is positioned at one end of the horizontally long hole 79b and the blocking plate 26 is located at the front and rear sliding position. . To remove, the operation is reversed.
[0041]
Then, a rubber cap (an example of a lid member) 81 having a circular operation hole 80 that allows only the push-pull movement of the rod 25 at the regular position of the rod 25 is detachably mounted on the roll case 18. It prevents leakage of fertilizer from the letter-shaped insertion hole 79 and intrusion of dust from the outside to improve the sealing property.
[0042]
For example, when the shutters s1 and s2 with respect to the first and second partial rolls r1 and r2 are pulled out to a closed position, and the third shutter s3 is pushed into an open position, fertilizer is applied only to the concave portion 24a of the third partial roll r3. Fertilization is performed in a state where water enters. Also, when all the partial shutters s1 to s3 are pushed in, the fertilizer enters the concave portions 24a of all the partial rolls r1 to r3, so that a large amount of fertilizer is fed out per unit time. By pushing or pulling the three partial shutters s1 to s3 alone or in combination in this manner, the amount of fertilizer fed out per unit time can be adjusted in five stages (r1 or r2, r3, r1 + r2, r1 or r2 + r3). , R1 + r2 + r3).
[0043]
Four sets of the feeding sections k, each of which has the above-described structure of the feeding mechanism 15 formed as a two-piece integrated type, are arranged side by side on the right and left. Of the four sets of the feeding sections k, two inner sets of the feeding sections k, k is set to one for one of the two sets of the shutter mechanisms S, S in which one of the shutter mechanisms S is fully closed and only one set of the feeding mechanism 15 is operated. That is, as shown in FIG. 10, two sets of the single-row feeding sections k, k are arranged between the left and right end two-row feeding sections k, k to configure the 6-row fertilizer applicator A. I have.
[0044]
The hopper 13 is made of resin and is formed by integrally forming left and right two-row large-capacity hoppers 13a, 13a and an inner one-row small-capacity hopper 13b, 13b. The front-rear width of the small-capacity hopper portions 13b, 13b is short at the rear of the driver's seat 27, and the front-rear width of the large-capacity hopper portions 13a, 13a is long at the left and right sides of the driver's seat 27. The capacity is set according to the amount of fertilizer for each of the two-row and one-row. The opening / closing lid 28 of the hopper 13 is an integral product covering four hopper portions 13a, 13b, 13b, 13a. As shown in FIG. 7, the lid 28 is swingably opened and closed at a fulcrum Z provided at a rear portion. is there.
[0045]
The support structure of the opening / closing lid 28 will be described. As shown in FIGS. 7 and 20, a horizontal closing posture (see FIG. 20 (a)) for lowering and swinging about the fulcrum Z to close the opening 13S formed on the upper surfaces of the hopper bodies 13a and 13b, The opening 13S is opened by swinging upward around Z to open the opening 13S slightly (75 degrees). At the time of fertilizer replenishment, the opening / closing lid 28 is opened to perform the posture.
[0046]
That is, projections 76 and 77 projecting opposite to each other are formed at a portion near the fulcrum Z on the back surface of the opening / closing lid 28 and at a tip portion of the stay 13c having the fulcrum Z of the hopper body 13a. When the lid projection 76 rides over the base projection 77 due to the upward swing of the lid 28, the downward swing of the opening / closing lid 28 due to gravity is engaged by the detent function due to the contact between the upper surface of the lid projection 76 and the lower surface of the base projection 77. The opening / closing lid 28 is stopped to maintain the open posture.
[0047]
Further, when the opening / closing lid 28 in the open position is further swung upward (toward the rear side), the opening / closing lid 28 comes into contact with the hopper body 13 and stops (see FIG. 20C). It is also possible to open up to the maximum open position in which the position of the center of gravity is behind the fulcrum Z (the position beyond the dead point due to gravity).
[0048]
As shown in FIG. 22, a fulcrum pin 83 having an opening / closing fulcrum Z is rotatably supported through the opening / closing lid 28 and the hopper body 13, and its pin tip 83 a is a dead end inside the opening / closing lid 28. Positioned depending on the state. The pin base end 83b slightly protruding from the opening / closing lid 28 is positioned so as to be prevented from falling off by a thin plate-like tongue piece 84 protruding from the opening / closing lid 28. The fulcrum pin 83 can be easily inserted and removed by slightly bending and deforming the tongue piece 84 and retreating from the fulcrum Z as shown in FIG. The property of repeated bending deformation and return of the tongue piece 84 is obtained by forming the hopper lid 28 with PP resin.
[0049]
The drive structure of the feeding mechanism 15 will be described.
As shown in FIGS. 7 to 10, one drive shaft 21 having a hexagonal cross section is rotatably supported over the boss portions 18 b of the four roll cases 18. The driving gear 21G is fitted to the outside so as to be relatively rotatable. The shift rotator 29 is fitted around the drive shaft 21 so as to rotate and slide freely, and includes a spring 30 for urging the shift rotator 29 toward the occlusal side of the drive gear 21G. In order to disengage the shift rotator 29 from the drive gear 21G, a shift member 31 that can swing freely is provided. In other words, the shift member 31 is forcibly rocked by pulling a wire (not shown), thereby forming a fertilizer application clutch 33 capable of blocking transmission of the rotational power of the drive shaft 21 to the feeding mechanism 15.
[0050]
As shown in FIGS. 1 and 4, a traveling transmission shaft 35 for transmitting power from the transmission case 4 to the rear axle case 34 at the rear of the fuselage is disposed in front and rear of the lower part of the vehicle body. A transmission case 36 for distributing power to the rear axle case 34 is provided immediately before the rear axle case 34. A transmission case 36 surrounding the traveling transmission shaft 35 is provided with a bevel gear mechanism (not shown), and a drive arm 37 attached to its output shaft is provided on one of the left and right lateral sides.
[0051]
On the other hand, as shown in FIGS. 7, 13, and 14, the drive shaft 21 is provided with a driven arm 39 via a first one-way clutch 38, and the driven arm 39 and the drive arm 37 are connected to a rod 40. And a conversion mechanism 41 for converting both the upward swing and the downward swing of the driven arm 39 into rotation of the drive shaft 21 in a fixed direction. In other words, the drive shaft 21 is continuously rotated in a certain direction while having one driven arm 39 that is reciprocally driven and oscillated by the rotating drive arm 37.
[0052]
The conversion mechanism 41 includes a sub driven arm 43 externally fitted to the drive shaft 21 via a second one-way clutch 42 that transmits only rotational force in the same direction as the first one-way clutch 38, and a bell crank that can swing about a fulcrum Y. 44, a rod 45 for interlocking the front end of the driven arm 39 and the bell crank 44, and a rod 46 for interlocking the bell crank 44 and the sub driven arm 43.
[0053]
That is, when the driven arm 39 swings upward, as shown in FIG. 13A, the first one-way clutch 38 integrally rotates to rotate the drive shaft 21 in the direction of arrow A, and in the direction of arrow B. The rotation of the sub driven arm 43 to be rotated causes the second one-way clutch 42 to idle. When the driven arm 39 swings downward, the first one-way clutch 38, which rotates in the direction shown by arrow B, idles and rotates in the direction shown by arrow a, as shown in FIG. The rotation of the sub driven arm 43 causes the second one-way clutch 42 to rotate integrally and rotate the drive shaft 21 in the same direction as the arrow a.
[0054]
As shown in FIGS. 4, 5, and 19, the air duct 17 includes a partial duct D <b> 1 made of a soft material such as rubber, which is provided for each of four sets of the feeding portions k in a state of being connected to the funnel portion 20. The partial duct D1 and the blower 16 are sequentially connected and connected to a connecting duct D2 made of a hard material such as a PE resin or a PP resin to form a single ventilation path. The connecting duct D2 is composed of three intermediate connecting ducts 49 for connecting and connecting the adjacent partial ducts D1 to each other, and a starting end connecting duct 50 for connecting and connecting the partial duct 48 closest to the air blower and the blower 16. It is composed of four parts.
[0055]
The partial duct D1 is composed of three types: a partial duct 48 on the upper side of the air blow, a partial duct 51 on the lower side of the air blower integrally formed with the lid 51b, and a second partial duct 47 from the lower side of the air blow. Have been. Then, in order to equalize the wind power supplied to each of the funnel portions 20 in each of the feeding portions k, the projecting portions 51a, 47a, 48a, and 48a projecting into the air supply paths in these partial ducts 51, 47, 48, and 48 are formed. It is integrally formed. The two lower projections 51a and 47a are the same projection, but the two projections 48a on the upper ventilation side are larger than these.
[0056]
In other words, when the area of the wind intake in the ventilation duct 17 is the same, the wind pressure tends to increase toward the leeward side and the wind per unit time tends to increase. It has been found that it is effective to provide a throttle at the intake side to reduce the cross-sectional area of the duct on the windward side as far as the intake port on the downstream side of the air blow.
[0057]
Therefore, the projections formed on each of the four partial ducts D1 may be increased in order from the windward side. However, if this is done, the four partial ducts D1 will all be different parts, which will increase the mold cost or increase part management. There are disadvantages, such as easy assembly errors. Therefore, by means of arranging two types of partial ducts 48, 47 (51) each having a large projection 48a and small projections 47a, 51a, the air flow to each funnel 20 is made uniform and the above disadvantage is eliminated. It is intended for medium use.
[0058]
In the feeding part k, since the wind intakes 14a, 14a, which are the starting ends of the fertilizing hoses 14, are arranged very close to each other, the wind intake 14a on the leeward side is positioned so as to be inserted further into the ventilation duct 17. A difference is provided so that the air volume at the adjacent air intakes 14a, 14a is also made uniform. Further, since the partial duct D1 is made of rubber, and each intake port 14a can be directly fitted and connected without any gap, the sealing material such as rubber packing, which was conventionally required, has been successfully omitted.
[0059]
As shown in FIGS. 15 to 17, the blower 16 mounted on the left side of the airframe is configured as a centrifugal type in which an impeller 54 that is rotationally driven by an electric motor 53 is housed in a casing 55 having a split structure. In addition, the casing 55 is formed with a downward suction port 55a and a rightward exhaust port 55b on the lower side. The exhaust port 55 b is configured to be inserted into the start end side of the start end side connection duct 50.
[0060]
As shown in FIG. 5, FIG. 6, and FIG. 18, a substantially vertical U-shaped bracket 56 attached to the casing 55 is provided on the front side (the electric motor 53 side) of the starting end side connection duct 50 on the vertical axis X. That is, it is externally fitted to the vertical portion of the support pipe 57 on the body frame side so as to be relatively rotatable while being positioned vertically. As a result, the blower 16 has a closing action position in which the exhaust port 55b is inserted into and connected to the start end side connection duct 50, and the blower 16 pivots forward from the action position to connect the exhaust port 55b and the start end side connection duct 50. Can be freely changed to an open and retracted posture (see the phantom line in FIG. 18) in which the connection connection portion is exposed by releasing.
[0061]
Next, the support frame of the fertilizer applicator A will be described.
As shown in FIGS. 4 to 6, the support frame f for the fertilizer applicator includes a main support frame 58 for integrally supporting the four feeding portions k, and a main and sub-frame for fixing the main support frame 58 to the body. It is composed of mounting frames 59 and 60 and the above-described bearing pipe 57.
[0062]
The main support frame 58 is formed of a channel material extending left and right in a substantially rearward U-shaped cross section with an upper side projecting rearward from a lower side, and fixes each roll case 18 with two mounting bolts 61. Each of the large and small hopper sections 13a, 13b is provided with a total of four fertilizer remaining amount sensors 62 for detecting that the amount of remaining fertilizer is low. The left and right wire harnesses 63, 63, which are wirings thereof, are provided on the body. For guidance, a route is provided using the space inside the main support frame 58 (see FIG. 8).
[0063]
The main support frame 58 is supported by the body frame F by a main mounting frame 59 at the left and right center welded to the main supporting frame 58 and a total of two sub mounting frames 60 and 60 bolted to the left and right sides thereof. The main mounting frame 59 is constituted by integrating a pair of left and right stay portions 59a, 59a, and a downwardly U-shaped pipe portion 59b straddling the stay portions 59a, 59a, and a sheet metal vertical supporting the driver's seat 27 and the like. It is bolted to the frame 64. The sub-attachment frame 60 is made of a plate material that is raised in a state of being bent backward by 90 degrees, and is bolted to a support member (for supporting the fender 65) 67 welded to the rear frame 66.
[0064]
The support pipe 57 has a lower portion bolted to a bracket 66a hanging down from the rear frame 66, and an upper end fitted to an arm member 58a welded to the left end of the main support frame 58 in a forwardly protruding state. I have stopped. The bracket 56 supporting the blower 16 is fitted to the support pipe 57 via upper and lower grommets 68, 68, and is positioned by a washer 69 welded to the support pipe 57.
[0065]
On the side of the seedlings planted by the planting claws 10, there is provided a groove-making device 52 for feeding fertilizer to the rice field while forming a groove, and six groove-making devices 52 are provided on the ground float 11 each. They are mounted individually. In two sets of left and right outer feeding parts k, k, each feeding mechanism 15 and two groove generators 52 are connected by two fertilizing hoses 14. In two sets of left and right inner feeding parts k, k, one of the feeding parts k, k is provided. The feeding mechanism 15 and one groove generator 52 are connected by one fertilizing hose 14.
[0066]
With the above structure, the rotating case 9 of the seedling planting apparatus 7 is driven to rotate by the power of the PTO shaft 70, and the seedlings are alternately taken out of the seedling mounting table 12 by the pair of planting claws 10 and planted on the rice field. Planting work is performed. At the same time, the reciprocating motion of the rod 40 due to the rotational motion of the drive arm 37 by the power of the traveling transmission shaft 35 is converted by the conversion mechanism 41 into the rotational motion of the drive shaft 21 in a fixed direction, and the feeding mechanism 15 is driven.
[0067]
Then, the fertilizer from the hopper 13 enters the concave portion 24a of the feeding roll R, and the fertilizer is fed to the funnel portion 20 by the rotation of the rotating shaft 19, and the wind of the blower 16 is supplied to the funnel portion 20 through the air duct 17. Then, a series of fertilization operations are performed in which the fertilizer is quickly supplied to the ditch generator 52 through the fertilization hose 14 by the high-pressure wind, and the fertilizer is supplied to the ditch of the field formed by the ditch generator 18. It is done.
[0068]
As shown in FIG. 13, the connection position of the driven arm 39 with the rod 40 is configured to be freely changeable. By changing the connection position, the swing angle of the driven arm 39 with respect to the reciprocating motion of the rod 40 is changed, and the drive is performed. By changing the rotation speed of the shaft 21 and the feeding roll R, the amount of the fed fertilizer can be adjusted.
[0069]
Each clutch (not shown) capable of transmitting and disconnecting power to one planting transmission case 8 (a pair of rotating cases 9), and each clutch lever (not shown) for transmitting and disconnecting each clutch. (Not shown). As shown in FIG. 9, the operation arm 31 that is swingable around the axis of the fixed portion of the feeding portion k has its end engaged with the shift rotating body 29, and each of the clutch levers (not shown). ) And the operation arm 31 are connected by a wire (not shown).
[0070]
Thus, for example, when the respective clutch levers of the right planting transmission case 8 are operated to the transmission blocking side and the respective clutches of the right planting transmission case 8 are subjected to the transmission blocking operation, the right planting transmission case 8 The pair of rotating cases 9 are stopped, the planting of the two right plantings is not performed, the drive shaft 15 of the fertilizer feeding part k corresponding to the two planting right plants is stopped, and the two right plantings are stopped. The supply of fertilizer to the planting strip stops.
[0071]
As shown in FIG. 8, a fertilizer discharge port 71 is formed in front of the brush 22 immediately below the shutter mechanism S, and the discharge port 71 can be opened and closed by a switching plate 72 that can swing around the horizontal axis W. It is configured in. The discharge port 71 is connected to a discharge hose 74 via a merging path 73. During a normal seedling planting operation, the switching plate 72 is operated to the closed position, and all the fertilizer from the hopper 13 is supplied to the feeding mechanism 15. Is done. When the switching plate 72 is operated in the open position with the blower 16 and the fertilizer applicator A stopped, for example, when the seedling planting operation is completed, the fertilizer remaining in the hopper 13 may be discharged through the discharge hose 74. it can.
[0072]
By the way, the feeding part k is basically a two-piece integrated type provided with two funnel parts 20 and 20 and two sets of roll cases 18 corresponding to the width thereof. One funnel 20 is disabled so as to meet the requirements for the sixth section. That is, as shown in FIG. 10, one set of three partial rolls r1 to r3 is omitted, and the two fertilizer hoppers 13b and 13b at the left and right centers are equivalent to one set of partial rolls r1 to r3. An inclined bottom surface 75 is additionally formed so as to have a supply port width.
[0073]
In the case where the above-mentioned hopper 13 for 6 rows is used for 5 rows, in the structure in which the hopper 13 is injection-molded, as shown by a two-dot chain line in FIG. The lid 85 is retrofitted. In the structure in which the hopper 13 is blow-molded, a portion that does not require the feeding mechanism 15 may be integrally formed with the mold itself so as to be formed in the shape of the above-described inner lid 85.
[0074]
[Another embodiment]
As shown in FIG. 25, one of the partial shutters s1 to s3 (for example, only s1 or s1 and s2) may be configured to supply a medicine. In this case, as shown in FIG. 27 and FIG. 28, a chemical hopper 82 is provided in the fertilizer hopper 13 to correspond to each partial shutter. It is possible to make it possible to perform both payouts. Note that a drug application brush (not shown) acting on the feeding roll R is finer than the brush 22 for fertilizer.
[0075]
FIG. 26 shows a single-row dispensing apparatus B, and FIG. 25 shows a two-row dispensing apparatus B. The medicine hopper 82 to be installed is bolted to the fertilizer hopper 13 and has three partial rolls r1 to r3. Among them, two narrow inner parts r1 and r2 are used for drug application. In addition, the concave portion 24a for injecting the medicine of the drug application part rolls r1 and r2 is formed to be smaller than the concave portion 24a for the fertilizer.
[Brief description of the drawings]
FIG. 1 is a side view of a riding rice transplanter.
FIG. 2 is a plan view of a riding rice transplanter.
FIG. 3 is a plan view of a fertilizer hopper.
FIG. 4 is a rear view of the fertilizer application unit.
FIG. 5 is a front view of a fertilizer application unit.
FIG. 6 is a left side view of the fertilizer application unit.
FIG. 7 is a side view showing a driving structure of the feeding mechanism.
FIG. 8 is a cross-sectional side view showing a structure of a feeding mechanism portion.
FIG. 9 is a cross-sectional view showing the structure of a feeding portion.
FIG. 10 is a cross-sectional view showing the structure of a single-row feeding portion.
FIG. 11 is a plan view showing a shutter mechanism.
FIG. 12 is a perspective view showing the structure of a partial shutter.
FIG. 13 is a side view showing a conversion mechanism for driving the feeding mechanism.
14 is a sectional view of the conversion mechanism shown in FIG.
FIG. 15 is a sectional view of a blower.
FIG. 16 is a side view of a blower.
FIG. 17 is a rear view of the blower.
FIG. 18 is a plan view showing a blower support structure.
FIG. 19 is a cross-sectional plan view showing the structure of an air duct.
FIG. 20 is an operation diagram showing an opening / closing structure of a hopper lid.
FIG. 21 is a principle view showing a hopper structure for 6-row and 5-row.
FIG. 22 is an operation diagram showing a hopper lid opening / closing fulcrum structure;
FIG. 23 is a perspective view of a main part showing a take-out structure of a partial shutter.
FIG. 24 is an operation diagram showing a procedure for assembling a partial shutter.
FIG. 25 is a cross-sectional view showing a two-row fertilizer device with a built-in drug dispenser device.
FIG. 26 is a cross-sectional view showing a single-row fertilizer application device with a built-in drug application device.
FIG. 27 is a schematic partially cutaway side view showing a medicine dispensing hopper incorporated in a large hopper main body.
FIG. 28 is a schematic partially cutaway side view showing a drug application hopper incorporated in a small hopper main body.
[Explanation of symbols]
13 Hopper
13a Hopper body
13s opening
15 Feeding mechanism
18 Roll case
24a recess
25 rod
26 Shutter
28 Hopper lid
77 protrusion
79 Insertion hole
79a Horizontal hole
79b Vertical hole
80 Operation hole
81 Lid member
A fertilizer application equipment
R Feeding roll
Z fulcrum
w Supply path

Claims (5)

Below the hopper storing the fertilizer, a fertilizer supply device is provided comprising a feeding mechanism for feeding a predetermined amount of the fertilizer flowing down from the hopper, and the feeding mechanism is formed by a feeding roll having a concave portion formed on its outer periphery for receiving fertilizer. And a roll case that rotatably supports and accommodates this feeding roll,
A shutter is provided which can be switched between an opening position where a supply path for guiding the fertilizer flowing down from the hopper to the feeding roll is opened and a closed position where the supply path is shut off. The shutter is formed of a flexible plate material, and in the closed position, the shutter has a flat shape to block the supply path, and the shutter is opened. In the rice transplanter with the fertilizer device , the shutter is bent along the inner wall of the hopper and retreats from the supply path . A rod connected to the shutter protrudes from the roll case to the outside, and the push-in operation of the rod reveals the opening posture of the shutter, and the pull-out operation of the rod reveals the closing posture of the shutter. The rice transplanter with a fertilizer device according to claim 1 , wherein the rice transplanter is configured to be operated. An insertion hole through which the rod in the roll case penetrates, a long horizontally long hole having one end at a regular projecting position of the rod in a state where the shutter is attached to the roll case, 3. The rice transplanter with a fertilizer device according to claim 2 , wherein the rice transplanter is formed in a substantially L-shape comprising a vertically elongated hole extending vertically from the other end. 4. The rice transplanter with a fertilizer device according to claim 3 , wherein a lid member having an operation hole that allows only the push-pull movement of the rod at a regular position of the rod is detachably mounted on the roll case. 5. The rice transplanter with a fertilizer according to any one of claims 1 to 4 , comprising a plurality of the shutters, wherein one of the plurality of shutters is configured to supply a medicine.

Images