JP4008635B2 - Fertilizer feeding device in fertilizer spreader - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention is a fertilizer spreader (broadcaster) in the form of an impeller that disperses fertilizer by an impeller rotating around a shaft among fertilizer spreaders that spray fertilizers such as chemical fertilizer, organic fertilizer, and compost. The present invention relates to an improvement on a fertilizer feeding device.
[0002]
[Prior art]
As shown in FIG. 1, the fertilizer spreader A of the above-described form is usually formed to be mounted on a towed body that travels by being connected to a tow vehicle such as a body that travels by itself or a tractor. On the upper surface side of the transmission case M, the central drive shaft 2 is rotated by being decelerated by the rotational power transmitted from the input shaft 1 to the transmission mechanism D in the transmission case M, and the input shaft 1 is constant or increased in speed. The outer cylinder shaft 3 that rotates in parallel is provided in a double shaft shape that is aligned with the same axial center line in the saddle direction, and the upper end side of the outer cylinder shaft 3 is arranged on the upper surface side of the transmission case M and the fuselage It is connected to the shaft core part of the impeller 4 stored in the impeller cover c mounted on, and is inserted into the central drive shaft 2 and connected to the agitator e disposed in the hopper 5. As a result, fertilizer is introduced into the hopper 5 to drive the input shaft 1. Thus, when the center drive shaft 2 and the outer cylinder shaft 3 are rotated, the fertilizer is put into the hopper 5 and the fertilizer is stirred by the agitator e rotated by the center drive shaft 2 and provided in the bottom plate 50 of the hopper 5. From the discharge port provided in the peripheral wall portion of the impeller cover c so as to be discharged from the discharge port provided in the peripheral wall of the impeller cover c. is there.
[0003]
The transmission mechanism D that transmits rotational power from the input shaft 1 to the central drive shaft 2 and the outer cylindrical shaft 3 is a conductive path d1 composed of a gear G1 and a gear G2 that rotate the central drive shaft 2 at a reduced speed with respect to the input shaft 1. Apart from the gear G3 that rotates the outer cylinder shaft 3 at a constant speed or increased speed with respect to the input shaft 1 and the conduction path d2 composed of the gear G4, the transmission path d2 to the outer cylinder shaft 3 has a clutch By operating the lever f, a clutch k1 is provided that “enters” and “disconnects” the conduction with the input shaft 1, and a one-way clutch k2 is provided between the center drive shaft 2 and the outer cylinder shaft 3, and the clutch When k1 is set to “ON”, the central drive shaft 2 provided with the agitator e is decelerated and rotated with respect to the input shaft 1, and the outer cylinder shaft 3 connected to the impeller 4 is increased at a constant speed or increased with respect to the input shaft 1. And the clutch k1 is disengaged. And when the rotated around the drive shaft 2 deceleration connecting the agitator e, the outer cylinder shaft 3 which connects to the impeller 4 so that a reduced speed following the central drive shaft 2 by the one-way clutch k2.
[0004]
And in this form of the fertilizer spreader A, the adjusting means for the amount of fertilizer fed out from the feeding port 51 provided at the bottom of the hopper 5 is provided on the lower surface of the bottom plate 50 of the hopper 5 where the feeding port 51 is opened. The plates g are overlapped and pivotally supported with respect to the machine body so as to freely rotate around the center drive shaft 2, and this shutter plate g is rotated by operation of an operation lever (not shown) linked to it. The amount of feed is adjusted by changing the polymerization ratio between the opening provided in the shutter plate g and the delivery port 51 provided in the bottom plate 50, and changing the opening area of the delivery port 51. Like to do.
[0005]
[Problems to be solved by the invention]
The fertilizer feeding means in the above-mentioned broadcast caster type fertilizer spreader includes, when the fertilizer to be sprayed is, for example, a granular or powdery chemical fertilizer, the opening of the feed outlet that is turned by rotating the shutter plate If you want to spread organic fertilizer such as compost, for example, if you want to spread organic fertilizer such as compost, you will not be able to spread fertilizer feeding There is a problem that comes out.
[0006]
This is because the caliber and shape of the feed outlet opened on the bottom plate of the hopper are formed so as to adapt to chemical fertilizer with good fluidity, and not suitable for organic fertilizer such as compost with poor fluidity. It is caused by becoming.
[0007]
As a countermeasure against this problem, the bottom plate of the hopper is formed in two ways: a bottom plate provided with a feed outlet for feeding chemical fertilizer and a bottom plate provided with a feed outlet for feeding organic fertilizer such as compost. In addition, the shutter plate that is brought into sliding contact with the bottom plate is controlled to open and close the shutter plate for controlling opening and closing of the feeding port provided on the bottom plate for chemical fertilizer and the feeding port provided on the bottom plate for organic fertilizer such as compost It is conceivable to form them in two ways with the shutter plate, and to combine them so that they are interchangeably attached to the bottom of the hopper. Every time the chemical fertilizer and the organic fertilizer are changed, the bottom plate and the shutter plate must be interchanged, and another problem that makes this interchangeable work troublesome arises.
[0008]
The present invention was made in order to solve the above-mentioned problems occurring in a conventional broadcaster type fertilizer spreader, and a bottom plate provided with a feed opening provided at the bottom of a hopper, and a polymerization state on the bottom plate The shutter plate that is attached to the bottom plate and controls the opening and closing of the feeding outlet is attached to the bottom of the hopper, and is adapted to the application of chemical fertilizer and organic fertilizer respectively. It is an object of the present invention to provide a new means for enabling conversion.
[0009]
[Means for Solving the Problems]
In the present invention, as a means for achieving the above-described object, when the feeding hole opened in the bottom plate of the hopper is divided into two by the virtual center line passing through the central hole into which the central drive shaft is inserted. The other half side of the bottom plate is formed as a blind plate, and the shutter that is superposed on the bottom plate so as to adjust the opening of the feeding hole is rotated freely around the center drive shaft and superposed vertically. The upper shutter and the lower shutter are each provided with a large-diameter hole corresponding to the feed hole formed in the bottom plate on one half side and a small-diameter on the other half side. Each of the holes is opened at a position displaced in the rotational direction in relation to the upper shutter and the lower shutter, and the upper shutter and the lower shutter are provided on the large holes provided on them. Caliber hole The bottom plate of the hopper is overlapped with the other half of the bottom plate, and the small-diameter hole is connected to the operating lever so that the small-diameter hole is overlapped with the feed-out hole of the bottom plate, and the large-diameter hole provided in these Feeding fertilizer in a fertilizer spreader characterized in that it can be switched to a state where it is superposed on the hole and the small-diameter hole is superposed on the other half side which is the blind plate of the bottom plate and linked to the operation lever A device is proposed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The fertilizer feeding device in the broadcaster type fertilizer spreader according to the means of the present invention may be configured in the same manner as the conventional one with regard to the configuration of the fertilizer spreader.
[0011]
That is, it is connected to a towing vehicle such as a tractor or the like that travels by itself, and the center drive shaft that stands upright on the upper surface side and the outer periphery of the center driving shaft rotate coaxially to the aircraft that travels or moves by the towing vehicle. A mission case with an outer cylinder shaft is mounted, and an impeller cover for storing the impeller is placed above it and mounted on the fuselage, and a hopper for fertilizer is placed on it. Then, the upper end side of the outer cylinder shaft is connected to the shaft core part of the impeller stored in the impeller cover, and the upper end side of the central drive shaft is inserted into the hopper for stirring. The outer cylinder shaft and the central drive shaft are installed at a constant speed or increased with respect to the input shaft provided in the transmission case by a transmission mechanism that stores the outer cylinder shaft and the central drive shaft in the transmission case. Rotate the center drive shaft to the input shaft To slow down and rotate.
[0012]
Further, a bottom plate having a feeding opening is provided at the bottom of the hopper, and a shutter plate for controlling opening / closing of the feeding opening provided on the bottom plate is freely rotated around a central drive shaft on the upper surface side or the lower surface side thereof. The operation lever is connected to this.
[0013]
And by this, fertilizer to be sprayed into the hopper is introduced, and the input shaft provided in the mission case is driven by driving with the prime mover mounted on the aircraft or the prime mover of the towing vehicle that pulls the aircraft, The fertilizer thrown into the hopper is fed out from the outlet sequentially into the impeller cover, spun out by the rotating impeller inside the case, and from the spout provided on the peripheral wall of the impeller cover To be sprayed.
[0014]
Thus, the fertilizer feeding means comprising the bottom plate installed at the bottom of the hopper of the fertilizer spreader and the shutter plate that is slidably contacted with the fertilizer is provided on the bottom plate provided at the bottom of the hopper by opening its outlet. Is formed in a substantially disk shape with a central hole through which the central drive shaft penetrates in the central portion, and is arranged concentrically with the central drive shaft in plan view and assembled in a fixed state to the airframe. On the other half side, an outlet is formed in an arc-shaped elongated hole having a length extending substantially half a circumference around the central hole.
[0015]
In addition, the shutter plate that is superposed so as to be in sliding contact with the bottom plate is divided into two upper and lower shutter plates, an upper shutter plate and a lower shutter plate, and the upper shutter plate and the lower shutter plate are separated from each other. Overlay the two sheets, insert the center holes into the center drive shaft, connect them to the rods that are operated by operating the operation lever, and rotate them around the center drive shaft by the operation of the rods To do.
[0016]
And, in the upper shutter and the lower shutter that are pivotally supported in a superposed state on the upper surface side or the lower surface side of the bottom plate of the hopper by overlapping these two sheets, for example, in the upper shutter that becomes one of the shutter plates, The center hole is centered as a shape corresponding to the outlet in a position corresponding to the distance from the center hole so that the large-diameter hole overlaps with the outlet formed in the bottom plate on one half side in a plan view. As an arc-shaped long hole that is continuous in a predetermined angle range, the other half side is located in a longitudinal direction of the large-diameter hole at a position corresponding to that of the large-diameter hole. A small-diameter hole is opened in the part brought close to one end of.
[0017]
In the other shutter plate, for example, the lower shutter plate, a large-diameter hole having a shape corresponding to the outlet opened in the bottom plate is opened on one half of the plan view in the same manner as the one shutter plate described above. However, the small-diameter hole is opened on the other half side. The small-diameter hole is opposite to the small-diameter hole opened on the other half side of the one shutter plate described above, and the other of the large-diameter hole in the longitudinal direction. The other shutter plate and the one shutter plate are stacked on top of each other so that the large-diameter hole and the large-diameter hole overlap each other. In some cases, the small-diameter holes and the small-diameter holes occupy positions where they are not superposed, and each small-diameter hole is closed by the other shutter plate.
[0018]
The large-diameter hole and small-diameter hole formed in these two shutter plates are the large-diameter hole and small-diameter hole provided in each shutter plate when the two shutter plates are placed side by side on a plane. You may open so that it may be symmetrical with a pair of lines.
[0019]
From this, the two shutter plates are formed in the same shape as having the same large-diameter hole and small-diameter hole at the same position, and one of the two shutter plates is turned over, so that the large-diameter You may make it comprise the two types of shutter boards in which a hole and a small aperture hole are in the above-mentioned relational position.
[0020]
The two shutter plates configured as described above are provided with connecting portions for connecting to the rods that are connected to the operation lever, and the connecting portions have a central hole for each shutter plate. It is provided at each of two locations displaced by a predetermined angular amount in the rotation direction as the center.
[0021]
Then, these two shutter plates are overlapped and stacked on top of each other, overlapped with the bottom plate of the hopper where the outlet is opened, and overlapped with the bottom plate, the center drive shaft is placed in the center hole. Are assembled and used in a state of being rotatably inserted.
[0022]
The two shutter plates that are used as the upper shutter and the lower shutter are overlapped so that the large-diameter hole and the small-diameter hole formed in each of the shutter plates occupy substantially symmetrical positions in the relationship between the upper shutter and the lower shutter. Overlay on.
[0023]
At this time, if the two shutter plates are formed in the same shape, one of the two shutter plates is turned over with respect to the other, and the large-diameter hole and the small-diameter hole formed in them are The positions of the shutter and the lower shutter are substantially symmetrical.
[0024]
The upper shutter and the lower shutter, which are assembled by stacking these two sheets so as to be three-layered on the bottom plate of the hopper and fitting the center hole into the center drive shaft, are provided with a connecting portion of a connecting rod connected to the operation lever. Each of the connecting portions is provided on the side where the small-diameter hole is provided when the upper shutter and the lower shutter are divided into the front and rear parts about the center hole. Then, the upper shutter and the lower shutter are respectively rotated around the central drive shaft so that the connecting portions protrude in opposite directions around the central drive shaft. Are connected to the operating lever, and the upper shutter and the lower shutter are rotated in opposite directions by the operation of pushing and pulling the operating lever.
[0025]
In addition, when compounding fertilizer is sprayed when assembling the upper shutter and the lower shutter in this way, the upper shutter and the lower shutter are rotated around the central drive shaft and formed into each of them. In this state, the large-diameter hole is overlapped with the other half side which is the blind plate opposite to the feeding hole formed on the left and right half sides of the bottom plate. In the case of connecting a connecting rod connected to the operating lever to the connecting portion and spraying organic fertilizer such as compost, a large-diameter hole is provided on the left and right half sides of the bottom plate and The upper shutter and the lower shutter are rotated approximately 180 degrees with respect to the bottom plate from the state of spraying the above-mentioned chemical fertilizer so as to be superposed, and the connecting rod is connected to the connecting portion in that state. By changing this assembly state , To allow switching of the state to adapt to the distribution of the state and organic fertilizer to adapt to the distribution of the chemical fertilizer.
[0026]
Further, in this way, the upper shutter and the lower shutter that are overlapped so as to be overlapped with each other on the bottom plate provided with the feeding hole in two overlaps are rotated so as to rotate about 180 degrees around the center drive shaft. In order to make it possible to smoothly switch the application state of chemical fertilizer and organic fertilizer by reconnecting to the operation lever, the connecting portions provided at the peripheral portions of the upper shutter and the lower shutter are displaced in the circumferential direction. It is effective to select a plurality of connecting portions in parallel and select the appropriate connecting portion when switching between chemical fertilizer and organic fertilizer.
[0027]
【Example】
Next, embodiments will be described with reference to the drawings. In addition, the same code | symbol shall be used about the drawing member as a structural member with the same effect as the conventional means.
[0028]
FIG. 2 is a longitudinal side view of a broadcaster type fertilizer spreader for carrying out the present invention. In FIG. 2, F is a body frame, and on the front side is a body of a towing vehicle such as a tractor as shown in FIG. Left and right lower link hitches 10 and 10 and a top link hitch 11 are provided on the rear surface side for connecting and mounting via a three-point link hitch.
[0029]
M is a transmission case mounted on the fuselage frame F. The input shaft 1 is pivotally supported on the front side, and the central drive shaft 2 and the outer cylindrical shaft 3 rotating coaxially therewith are upright on the upper side. As shown in FIG. 3, there is a conduction path d1 for transmitting rotational power input from the input shaft 1 to the central drive shaft 2 by gear G1 and gear G2, and a gear G3. A conduction path d2 that conducts the outer cylinder shaft 3 at a constant speed or increased speed by the gear G4 is stored.
[0030]
c is an impeller cover arranged above the transmission case M and mounted on the fuselage frame F. Inside, an axial core portion is connected to the upper end portion of the outer cylinder shaft 3 and the outer cylinder shaft is connected thereto. The impeller 4 rotated by 3 is stored.
[0031]
Reference numeral 5 denotes a hopper which is arranged above the impeller cover c and is mounted on the body frame F. Inside the hopper, an upper extension 2a of the central drive shaft 2 enters, and a clutch K A shaft cylinder 20 connected to the upper extension 2 a via the shaft is rotatably fitted, and an agitator e is attached to the outer periphery of the shaft cylinder 20 via a stay 21.
[0032]
Reference numeral 50 denotes a bottom plate of the hopper 5, and as shown in FIGS. 9 and 10, it is formed in the shape of a dish having an assembly rod 500 on the periphery, and the bottom wall 501 has a center hole 52 and a feeding plate. A hole 51 is opened.
[0033]
The center hole 52 is a shaft hole into which the center drive shaft 2 is rotatably inserted, and is opened at the center portion of the bottom wall 501.
[0034]
The feed hole 51 is a hole for sequentially feeding the fertilizer in the hopper 5, and as shown in FIG. 12, when the bottom wall 501 is divided into two front and rear (left and right in the figure) with a virtual center line passing through the center hole 52. An arc-shaped long hole concentric with the center hole 52 is formed on the front half side (right half side in the figure), and the length in the longitudinal direction (circumferential direction) is approximately centered on the center hole 52. It is formed to have a length over an angle range of about 180 degrees, and thus, the entire surface on the front half side of the bottom wall 501 is opened.
[0035]
9 and 10, reference numerals 6 and 7 denote an upper shutter and a lower shutter that are used in a superposed manner so as to be superposed on each other so as to be superposed on the lower surface of the above-described bottom plate 50.
[0036]
FIG. 11 is a plan view of the upper shutter 6 and the lower shutter 7. In FIG. 11, reference numerals 60 and 70 denote center holes, each of which is formed in the shape of a shaft hole fitted into the central drive shaft 2, 61 Numerals 71 and 71 are large-diameter holes opened in the shutters, and numerals 62 and 72 are small-diameter holes opened in the shutters.
[0037]
The large-diameter holes 61 and 71 are formed in arc-shaped elongated holes that are substantially the same shape as the feeding holes 51 formed in the bottom plate 50 of the hopper 5 described above, and are formed in the rear half of each of the upper shutter 6 and the lower shutter 7. It has been established.
[0038]
The small-diameter holes 62 and 72 are opened on the front half sides of the upper shutter 6 and the lower shutter 7. The small-diameter hole 62 of the upper shutter 6 is clockwise around the central hole 60. In the direction of, the opening is located at a portion close to the front end edge 61a of the long hole-shaped large-diameter hole 61 that is delayed in that direction, and the small-diameter hole 72 of the lower shutter 7 has advanced in the above-mentioned direction. A large hole 71 is opened at a portion close to the rear end edge 71b.
[0039]
63, 63 and 73, 73 are an operating lever 81 that pivotally supports the upper shutter 6 and the lower shutter 7 so as to pivot up and down around the fulcrum shaft 80 on the body frame F as shown in FIGS. The upper shutter 6 and the lower shutter 6 are connected to the operation lever 81 via a connecting mechanism so that the opening degree of the feeding hole 51 can be changed and adjusted by rotating about the center drive shaft 2. The connecting portion provided in the shutter 7 is provided so as to protrude in the radial direction from the peripheral edge on the first half side where the small-diameter holes 62 and 72 are respectively opened, and is provided in each portion where the position is changed in the circumferential direction. You can select and connect from them.
[0040]
The connection between the connecting portions 63 and 73 and the operation lever 81 described above is achieved by rotating the operation lever 81 supported by a fixed fulcrum shaft 80 provided on the body frame F as shown in FIGS. A movable arm 82 is provided, and a pivot arm 84 pivotally supported by the machine frame F so as to pivot back and forth about the pivot shaft 83 is connected by a connecting pin p that can be freely inserted and removed. One end of each of the connecting rods 86, 86 is connected to each upper end portion of the operating arm 85, 85 provided on the rotating shaft 83 so as to rotate integrally with the arm 84, and the other end side thereof is connected to the connecting portion 63. 73, respectively.
[0041]
In this connection mechanism, the connecting lever p is a connecting point between the arm 82 that rotates about the fulcrum shaft 80 and the rotating arm 84 that rotates about the rotation shaft 83 integrally with the operation lever 81. The connecting hole 87 is provided as a connecting hole 87-1 and a connecting hole 87-2 at two locations where the distance from the fulcrum shaft 81 of the arm 82 is different. By selecting this, the connecting pin p is replaced. As shown in FIG. 7, when the arm 82 is rotated by a predetermined angle amount, the rotation amount of the operating arm 85 that is rotated thereby is small, and thus the movement amount of the connecting rod 86 is small. As shown in FIG. 8, the amount of rotation of the operating arm 85 when the arm 82 is rotated by a predetermined angular amount increases, and the amount of movement of the connecting rod 86 increases. Applicable state Switching is are then to be performed.
[0042]
12 to 27, the two shutter plates of the upper shutter 6 and the lower shutter 7 are assembled to the lower surface side of the bottom plate 50 of the hopper 5 by inserting their central holes 60 and 70 into the central drive shaft 2. When connecting the connecting portions 63, 63, 73, 73 provided in them to a fertilizer to be sprayed, such as chemical fertilizer and organic fertilizer, when connecting to the aforementioned operating lever 81 via a connecting mechanism, It is description explaining an aspect.
[0043]
That is, when a granular or powdery chemical fertilizer is put into the hopper 5 and sprayed, the upper shutter 6 and the lower shutter 7 are opened on one half of them as shown in FIGS. The large-diameter holes 61 and 71 are positioned substantially on the lower surface of the second half side which is the blind plate of the bottom plate 50, and the small-diameter holes 62 and 72 opened on the other half side are the feeding holes of the bottom plate 50. 51 is located on the lower surface of the front half side where the opening 51 is established, and at this time, the connecting portions 63 and 63 of the upper shutter 6 are arranged so that the direction of the arrow A in the thin line in FIG. Then, it projects to the front end side (lower side in the figure) in the rotational direction of the impeller 4 on the front half side where the feed hole 51 of the bottom plate 50 is opened, and the connecting portions 73 and 73 of the lower shutter 7 are connected to the front half of the bottom plate 50. The rear end side in the rotation direction of the impeller 4 on the side (in the drawing In a state protruding upward side), in this state, interlocking the interlocking rod 86, 86 so that in Figure 9.
[0044]
At this time, the connecting rods 86 and 86 select and connect the connecting portions 63 and 73 closer to the connecting portions 63 and 63 of the upper shutter 6 and the connecting portions 73 and 73 of the lower shutter 7, respectively.
[0045]
Thereby, by operating the operation lever 81, the two shutter plates of the upper shutter 6 and the lower shutter 7 are rotated with respect to the feeding hole 51 of the bottom plate 50, and the small aperture is located at a position where it overlaps the lower surface of the feeding hole 51. The opening can be adjusted to a desired degree of opening between the state where the holes 62 and 72 are fully opened as shown in FIG. 15 and the state where the holes 62 and 72 are fully closed as shown in FIG.
[0046]
Further, when an organic fertilizer such as compost is put into the hopper 5 and is to be sprayed, the upper shutter 6 and the lower shutter 7 are placed on one half of them as shown in FIGS. The large-diameter holes 61 and 71 that are opened are located on the lower surface of the front half side where the feeding holes 51 of the bottom plate 50 are opened, and the small-diameter holes 62 and 72 that are opened on the other half side are At this time, the connecting portions 63 and 63 of the upper shutter 6 protrude upward and the connecting portions 73 and 73 of the lower shutter 7 are located on the lower surface of the rear half side formed of the blind plate. It is set as the state which protrudes below, In this state, as shown in FIG. 10, it connects with the connecting rod 86 * 86.
[0047]
At this time, the connecting rods 86 and 86 are connected to the upper shutter 6 and the lower shutter 7 in parallel with each other in the circumferential direction, of the connecting portions 63 and 63 and the connecting portions 73 and 73 on the closer side. However, the connecting parts 63 and 73 on the near side thereof are substantially centered on the center drive shaft 2 from the state in which the upper shutter 6 and the lower shutter 7 are made to correspond to the application of the chemical fertilizer. Since it is rotated 180 degrees, it is separate from the connecting parts 63 and 73 when it is made to correspond to the application of chemical fertilizer, and it is connected to the side that was playing when connected to correspond to the application of chemical fertilizer Parts 63 and 73
[0048]
As described above, the upper shutter 6 and the lower shutter 7 connected to the operation lever 81 via the connection mechanism are operated by operating the operation lever 81, so that the small-diameter holes 62 and 72 of the upper shutter 6 and the lower shutter 7 as shown in FIG. Is located on the lower side of the rear half of the bottom plate 50 of the hopper 5, and the large-diameter holes 61 and 71 are located on the lower side of the feeding hole 51 on the front half of the bottom plate 50 so as to fully open the feeding hole 51. 27, the small-diameter holes 62 and 72 are positioned on the lower surface side of the bottom plate 50, which is the blind plate of the bottom plate 50, and below the feeding holes 51 of the bottom plate 50 of the large-diameter holes 61 and 71. The portions located at the position where the upper shutter 6 and the lower shutter 7 are blinded with each other are mutually closed, and freely rotate between the state where the feeding hole 51 is fully closed, The opening degree of the feeding hole 51 can be adjusted to a desired opening degree.
[0049]
【The invention's effect】
As described above, in the fertilizer spreader according to the means of the present invention, the feeding hole opened in the bottom plate of the hopper is formed on one half side of the bottom plate, and the shutters for adjusting the opening degree of the feeding hole are respectively provided. The rotating upper shutter and the lower shutter are overlapped with each other, and the upper shutter and the lower shutter have a large-diameter hole corresponding to the feeding hole on one half side and a small-diameter hole on the other half side, In addition, the small-diameter hole is opened at a position displaced in the rotational direction in relation to the upper shutter and the lower shutter, and the upper-diameter hole provided in the upper shutter and the lower shutter is the bottom plate of the hopper. The opening of the small-diameter hole of the upper and lower shutters that overlaps with the feeding hole by superimposing with the other half side which is the blind plate and connecting to the operation lever as the small-diameter hole overlaps with the feeding hole of the bottom plate Is adjusted, and The large-diameter hole provided in the shutter is overlapped with the feeding hole of the bottom plate of the hopper, and the small-diameter hole is connected to the operation lever as a state of overlapping with the other half side which is the blind plate of the hopper bottom plate, Since the small-diameter hole is fully closed and the opening of the large-diameter hole is adjusted, the two types of chemical fertilizer with good fluidity and organic fertilizer with poor fluidity are used. A simple mechanism in which two shutters are combined and overlapped on the bottom plate of the hopper so as to overlap three, and the feeding amount can be adjusted and controlled in a state adapted to each property.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a conventional fertilizer spreader.
FIG. 2 is a longitudinal side view of a fertilizer spreader according to the means of the present invention.
FIG. 3 is a longitudinal side view of a mission section of the fertilizer spreader same as above.
FIG. 4 is a side view of the fertilizer spreader same as above.
FIG. 5 is a plan view of the fertilizer spreader same as above.
FIG. 6 is a front view of the same fertilizer spreader.
FIG. 7 is a side view of a mechanism mechanism for connecting the shutter and the operation lever when the fertilizer spreader is sprayed with chemical fertilizer.
FIG. 8 is a side view of the linking mechanism portion of the above in a state of compost application.
FIG. 9 is a perspective view of the main part of the linkage mechanism portion when the fertilizer is sprayed between the shutter and the operating lever.
FIG. 10 is a perspective view of the linking mechanism unit of the above in a state of compost application.
FIG. 11 is a plan view of the same upper shutter and lower shutter.
FIG. 12 is a plan view of the bottom plate of the hopper.
FIG. 13 is a plan view of the upper shutter when the chemical fertilizer is sprayed.
FIG. 14 is a plan view of the same lower shutter as in the above state.
FIG. 15 is a plan view showing a state in which the same base plate, upper shutter, and lower shutter are overlapped and combined.
FIG. 16 is a plan view of the bottom plate of the hopper when the feed hole for spraying chemical fertilizer is fully closed.
FIG. 17 is a plan view of the upper shutter in the same state.
FIG. 18 is a plan view of the lower shutter in the same state.
FIG. 19 is a plan view showing a state in which the bottom plate, the upper shutter, and the lower shutter are overlapped in the same state.
FIG. 20 is a plan view of the bottom plate of the hopper when the feeding hole for spreading organic fertilizer is fully opened.
FIG. 21 is a plan view of the upper shutter in the same state.
FIG. 22 is a plan view of the lower shutter in the same state.
FIG. 23 is a plan view of the overlapping state of the bottom plate, the upper shutter, and the lower shutter in the same state.
FIG. 24 is a plan view of the bottom plate of the hopper when the feeding hole for spraying organic fertilizer is fully closed.
FIG. 25 is a plan view of the upper shutter in the same state.
FIG. 26 is a plan view of the lower shutter in the same state.
FIG. 27 is a plan view of the overlapping state of the bottom plate, the upper shutter, and the lower shut in the same state.
[Explanation of symbols]
A ... Fertilizer spreader, D ... Conduction mechanism, G1, G2, G3, G4 ... Gear, F ... Airframe frame, K ... Clutch, M ... Mission case, c ... Impeller cover, d1 / d2 ... Conduction path, e ... Agitator, f ... clutch lever, g ... shutter plate, k1 ... clutch, k2 ... one-way clutch, p ... connecting pin, 1 ... input shaft, 10 ... lower link hitch, 11 ... top link hitch, 2 ... central drive shaft, 2a DESCRIPTION OF SYMBOLS ... Upper extension part, 20 ... Shaft cylinder, 21 ... Stay, 3 ... Outer cylinder shaft, 4 ... Impeller, 5 ... Hopper, 50 ... Bottom plate, 500 ... Assembly rod, 501 ... Bottom wall, 51 ... Delivery port, 52 ... Center hole, 6 ... Upper shutter, 60 ... Center hole, 61 ... Large aperture hole, 61a ... Front end edge, 62 ... Small aperture hole, 63 ... Connecting portion, 7 ... Lower shutter, 70 ... Center hole, 71 ... Large aperture Hole 71b ... Rear edge 72 ... Small hole 73 Interlocking portion, 80 ... support shaft, 81 ... operating lever, 82 ... arm, 83 ... pivot shaft, 84 ... pivot arm, 85 ... operating arm, 86 ... connecting rod, 87 ... connection holes.

Claims (4)

The feed hole opened in the bottom plate of the hopper is formed on one half side when the bottom plate is divided into two by a virtual center line passing through the center hole into which the central drive shaft is inserted, and the other half side of the bottom plate is made a blind plate. Two shutters, an upper shutter and a lower shutter, that rotate freely around the center drive shaft and overlap each other, are arranged on the bottom plate so as to adjust the opening of the feeding hole. Each of which has a large-diameter hole corresponding to the feed hole formed in the bottom plate on one half side, and a small-diameter hole on the other half side. Opened at a position displaced in the rotational direction in relation to the shutter, these upper shutter and lower shutter are overlapped on the other half side where the large-diameter hole provided in them is the blind plate of the bottom plate of the hopper The small-diameter hole is A state where it is connected to the operation lever as a state where it overlaps with the hole, and a large-diameter hole provided in them overlaps with the feeding hole of the bottom plate of the hopper, and a small-diameter hole overlaps with the other half side where the bottom plate is blind A fertilizer feeding device in a fertilizer spreader characterized in that it can be switched to a state linked to an operation lever as a state. 2. The feeding of fertilizer in a fertilizer spreader according to claim 1, wherein an upper shutter and a lower shutter having a center hole and a large-diameter hole are formed in the same shape, and one of them is used in an inverted state. apparatus. 2. A connecting portion for connecting to the peripheral portion of the upper shutter and the lower shutter with respect to the operation lever is installed at a plurality of locations displaced in the circumferential direction of the peripheral portion of the upper shutter and the lower shutter. The fertilizer supply apparatus in the described fertilizer spreader. 2. A fertilizer feeding device in a fertilizer spreader according to claim 1, wherein an adjusting means for adjusting the amount of rotation of the shutters is provided in the middle of a connecting mechanism for connecting the upper shutter and the lower shutter to the operation lever. .

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