JP2001103821A - Fertilizer feeder in fertilizer applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject feeder having such a scheme that a shutter with the function for the opening/closing control on the feed port of a hopper is designed to be switchable so as to be respectively adaptable to compound fertilizer application and organic fertilizer application while being left assembled at the bottom of the hopper. SOLUTION: This fertilizer feeder has such a scheme that an upper shutter 6 and lower shutter 7 superposed on the bottom plate 50 of a hopper so as to regulate the opening degree of a feed port 51 on the bottom plate 50 and also superposed on each other vertically so as to be rotatable around a central drive shaft are respectively provided, on one half side, with larger-sized holes 61, 71 corresponding to the feed port on the bottom plate, while on the other half side, with smaller-sized holes 62, 72, which, in the context of the upper and lower shutters, are provided at such positions as to be shifted in the rotational direction thereof, and the upper and lower shutters are made switchable between such a mode as to be coordinated with a control lever so that the larger-sized holes are superposed on the other half side representing a blind of the bottom plate of the hopper while the smaller-sized holes are superposed on the feed port on the bottom plate and such an another mode as to be coordinated with the control lever so that the larger-sized holes are superposed on the feed port on the bottom plate of the hopper while the smaller-sized holes are superposed on the other half side representing a blind of the bottom plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer disperser for dispersing fertilizers such as chemical fertilizers, organic fertilizers, and composts. The present invention relates to an improvement in a fertilizer feeding device in a spreader (broadcaster).

[0002]

2. Description of the Related Art As shown in FIG. 1, a fertilizer spreader A of the above-described type is usually mounted on a towed vehicle such as a self-propelled machine or a towing vehicle such as a tractor. A transmission mechanism D in the transmission case M is provided on the upper surface side of the transmission case
A double shaft in which a central drive shaft 2 rotating at a reduced speed by the rotational power transmitted to the outer shaft 3 and an outer cylindrical shaft 3 rotating at an equal or increased speed with respect to the input shaft 1 are aligned in the same vertical axis. And the upper end side of the outer cylindrical shaft 3 is connected to the shaft core portion of the impeller 4 housed in the impeller cover c which is arranged on the upper surface side of the transmission case M and mounted on the fuselage. Then, it protrudes into the center drive shaft 2 and is connected to the agitator e provided in the hopper 5, whereby the hopper 5
Put the fertilizer inside, and drive the input shaft 1 to drive the center drive shaft 2
When the outer cylinder shaft 3 is rotated, the fertilizer is put into the hopper 5 and the fertilizer is stirred by the agitator e rotated by the central drive shaft 2 so that the feed port 5 provided on the bottom plate 50 of the hopper 5
1 to the impeller cover c, where the outer cylinder shaft 3
The blades are swung by the rotating impeller 4 and are discharged and scattered from a discharge port provided on a peripheral wall portion of the impeller cover c.

A transmission mechanism D for transmitting rotational power from the input shaft 1 to the center drive shaft 2 and the outer cylinder shaft 3 includes a gear G1 and a gear G for rotating the center drive shaft 2 at reduced speed with respect to the input shaft 1.
2, a gear G3 and a gear G4 for rotating the outer cylindrical shaft 3 at a constant speed or an increased speed with respect to the input shaft 1.
A transmission path d2 to the outer cylinder shaft 3 is provided with a clutch k1 for turning on / off the transmission with the input shaft 1 by operating the clutch lever f, separately from the transmission path d2 comprising Also, a one-way clutch k2 is provided between the center drive shaft 2 and the outer cylinder shaft 3, and the clutch k1 is turned "on".
, The center drive shaft 2 provided with the agitator e rotates at a reduced speed with respect to the input shaft 1, and the outer cylinder shaft 3 connected to the impeller 4 rotates at a constant speed or at a higher speed with respect to the input shaft 1. When the clutch k1 is set to "disengage", the center drive shaft 2 connected to the agitator e rotates at a reduced speed, and the outer cylinder shaft 3 connected to the impeller 4 follows the center drive shaft 2 by the one-way clutch k2 and decelerates. I'm trying to rotate.

[0004] In the fertilizer spreader A of this embodiment, the means for adjusting the amount of fertilizer to be fed out from the outlet 51 provided at the bottom of the hopper 5 is provided on the lower surface of the bottom plate 50 of the hopper 5 having the outlet 51 opened. In addition, the shutter plate g is superimposed and supported by the body so as to freely rotate about the center drive shaft 2, and an operation lever (not shown) for connecting the shutter plate g to the shutter plate g is operated. By changing the overlapping ratio of the opening formed in the shutter plate g and the outlet 51 formed in the bottom plate 50 to change the opening area of the outlet 51, The amount is adjusted.

[0005]

When the fertilizer to be sprayed is, for example, a granular or powdered chemical fertilizer, the shutter plate is rotated. By adjusting the opening degree of the feeding outlet by performing the above, the feeding state of the fertilizer can be adjusted as desired, but when it is intended to spray an organic fertilizer such as compost, for example, there is a problem with the control of the feeding of the fertilizer. Come and
There is also a problem that can occur when spraying becomes impossible.

[0006] This is because the diameter and the shape of the discharge port formed in the bottom plate of the hopper are formed so as to be adapted to the chemical fertilizer having good fluidity, and are applicable to the organic fertilizer such as compost having poor fluidity. This is due to not being.

[0007] As a countermeasure against this problem, the bottom plate of the hopper is formed in two ways: a bottom plate provided with an outlet for feeding chemical fertilizers, and a bottom plate provided with an outlet for feeding organic fertilizers such as compost. In addition, a shutter plate for slidingly contacting the bottom plate in a superposed state is provided with a shutter plate for controlling opening and closing of a discharge port provided on a bottom plate for chemical fertilizer and a discharge port provided on a bottom plate for organic fertilizer such as compost. It is conceivable to form the shutter hopper in two ways with a shutter plate for controlling opening and closing, and to combine them to be interchangeably mounted on the bottom of the hopper.
In such a case, every time the fertilizer to be sprayed is changed to a chemical fertilizer and an organic fertilizer, the bottom plate and the shutter plate must be interchanged, and another problem that this exchange work is cumbersome appears. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem which has occurred in the conventional broadcaster type fertilizer spreader, and has a bottom plate having a feed port provided at the bottom of a hopper, and a bottom plate thereof. A shutter plate that is joined to the polymerization state and opens and closes the opening of the bottom plate and controls the opening and closing of the outlet, while being attached to the bottom of the hopper, for spraying chemical fertilizer and organic fertilizer, It is an object to provide new means that can be adapted to be adapted respectively.

[0009]

According to the present invention, as a means for achieving the above object, a feed hole formed in a bottom plate of a hopper and a center hole into which a center drive shaft is inserted are inserted into the bottom plate. A shutter formed on one half side when divided by a virtual center line passing therethrough and the other half side of the bottom plate as a blind plate, and superimposed on the bottom plate so as to adjust the degree of opening of the feeding hole, each having a center on the center drive shaft. The upper and lower shutters, which rotate freely and overlap vertically, are provided with large-diameter holes in the upper and lower shutters corresponding to the feeding holes formed in the bottom plate on one half side. On the other half side, small-diameter holes are respectively opened, and these small-diameter holes are opened at positions displaced in the rotational direction in relation to the upper shutter and the lower shutter. With shutter The state in which the large-diameter holes provided therein are overlapped with the other half side of the bottom plate of the hopper that is a blind plate and the small-diameter holes are connected to the operation lever as a state in which the small-diameter holes overlap with the feed-out holes of the bottom plate, and provided in them. The large-diameter hole overlaps the feed hole of the bottom plate of the hopper, and the small-diameter hole overlaps the other half side, which is the blind plate of the bottom plate. The present invention proposes a fertilizer dispensing device in a fertilizer spreader.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A fertilizer dispensing device of a broadcaster type fertilizer spreader according to the present invention may have the same configuration as that of a conventional fertilizer spreader.

That is, a center drive shaft standing upright on an upper surface side and an outer periphery of the center drive shaft are coaxially connected to a self-propelled body or a tow vehicle such as a tractor and the like, which is driven or moved by the tow vehicle. A transmission case equipped with an outer cylinder shaft that rotates with a hopper, an impeller cover for storing the impeller is arranged above it, mounted on the fuselage, and a hopper for putting fertilizer on it And the upper end side of the outer cylinder shaft is connected to the shaft center portion of the impeller housed in the impeller cover, and the upper end side of the center drive shaft protrudes into the hopper. The agitator for agitation is attached to the outer cylinder shaft and the center drive shaft by a transmission mechanism that is housed in the transmission case. And rotate it to the center drive shaft. Decelerating the input shaft rotate.

A bottom plate having a feed port is provided at the bottom of the hopper, and a shutter plate for controlling the opening / closing of the feed port provided on the bottom plate is freely provided on the upper surface or the lower surface of the hopper around a center drive shaft. And the operation lever is connected to it.

[0013] Thus, the fertilizer to be sprayed is put into the hopper, and the input shaft provided in the transmission case is driven by being transmitted to the prime mover mounted on the fuselage or the prime mover of the towing vehicle pulling the fuselage. Thereby, the fertilizer put into the hopper is sequentially fed out from the feeding outlet into the impeller cover, and is swung by the impeller rotating in the case, and is provided on the peripheral wall portion of the impeller cover. Make sure it is sprayed from the spout.

Thus, the fertilizer feeding means comprising the bottom plate mounted on the bottom of the hopper of the fertilizer spreader and the shutter plate which rotates in sliding contact with the fertilizer spreader opens a feeding outlet for the fertilizer to be provided at the bottom of the hopper. In the bottom plate to be provided, it is formed in a substantially disc shape having a center hole through which the center drive shaft penetrates in a center portion, and is disposed concentrically with the center drive shaft in a plan view and assembled in a fixed state to the body, and On one half side in plan view, an outlet is formed and formed in an arc-shaped elongate hole having a length extending substantially half way around the center hole.

Further, the shutter plate provided so as to overlap with the bottom plate so as to be in sliding contact with the bottom plate is divided into upper and lower shutter plates of an upper shutter plate and a lower shutter plate. The plates and the two plates are superimposed on each other, their central holes are inserted into the central drive shaft, and rods operated by operating the operation lever are connected to them, respectively. Make it rotate separately.

The upper shutter and the lower shutter which are stacked and rotatably supported on the upper surface or the lower surface of the bottom plate of the hopper in a superposed state are provided on one of the shutter plates, for example, the upper shutter. In one half in plan view, the large-diameter hole is positioned at a position corresponding to the distance from the center hole so as to overlap with the above-described outlet formed in the bottom plate, and has a shape corresponding to the outlet. It is formed and opened in an arc-shaped long hole continuous with a predetermined angle range around the hole, and on the other half side, at a position corresponding to the distance from the center hole to that of the large-diameter hole, the large-diameter hole A small-diameter hole is made in a portion that is close to one end in the longitudinal direction.

Also, in the case of the other shutter plate, for example, a lower shutter plate, a large aperture having a shape corresponding to the opening formed in the bottom plate is provided on one half side in a plan view similarly to the above-mentioned one shutter plate. A hole is opened and a small-diameter hole is opened on the other half side, and the small-diameter hole is opposite to the small-diameter hole opened on the other half side of one of the above-mentioned shutter plates. The other shutter plate and the one shutter plate are overlapped with each other so that the large-diameter holes overlap with the large-diameter holes. In this state, the small-diameter holes and the small-diameter holes occupy non-overlapping positions, and each of the small-diameter holes is closed by the other shutter plate.

The large-diameter hole and the small-diameter hole formed in the two shutter plates correspond to the large-diameter hole and the small-diameter hole provided in the respective shutter plates when the two shutter plates are placed side by side on a plane. May be opened so as to be symmetrical with respect to a pair.

From this, the two shutter plates are formed in the same shape with the same large-diameter hole and the same small-diameter hole at the same position, and one of them is turned upside down. The large-diameter hole and the small-diameter hole may form two types of shutter plates in the above-described relationship.

Each of the two shutter plates configured as above is provided with a connecting portion for connecting to a rod connected to the operation lever, and the connecting portion is provided with respect to each shutter plate. It is provided at each of two locations displaced by a predetermined angle in the rotation direction about the center hole.

Then, these two shutter plates are overlapped and combined in a double stack, and are stacked on a bottom plate of a hopper having a feeding opening, and are stacked three times with the bottom plate. It is used in a state where the center drive shaft is rotatably fitted.

The two shutter plates used as an upper shutter and a lower shutter are superposed on each other in a position where the large-diameter hole and the small-diameter hole formed respectively are substantially symmetrical in relation to the upper shutter and the lower shutter. To occupy.

At this time, when two shutter plates are formed in the same shape, one of them is turned upside down with respect to the other, and the two shutter plates are overlapped with each other to form a large-diameter hole and a small-diameter hole. Occupy substantially symmetric positions in the relationship between the upper shutter and the lower shutter.

The upper shutter and the lower shutter, which are overlapped with each other so as to be overlapped with the bottom plate of the hopper so that three sheets are overlapped with each other and whose center hole is inserted into the center drive shaft, are provided with connecting rods connected with the operation lever. The connecting portions are respectively provided, and the connecting portions are provided on the side where the small-diameter hole is provided when the upper shutter and the lower shutter are divided into two parts back and forth around the center hole. Then, the upper shutter and the lower shutter are respectively rotated about the center drive shaft so that the connection portions project in opposite directions about the center drive shaft, respectively. Is connected to the operation lever, and the upper shutter and the lower shutter are assembled so that the upper and lower shutters rotate in opposite directions when the operation lever is pushed and pulled.

When assembling the upper shutter and the lower shutter in this way, when the chemical fertilizer is sprayed, the upper shutter and the lower shutter are rotated about a central drive shaft, and each of them is rotated. The large diameter hole that is formed in the other half side that is the blind plate on the opposite side to the extension hole that is formed on the left and right half of the bottom plate, In this state, a connecting rod connected to the operating lever is connected to the connecting portion, and when an organic fertilizer such as compost is sprayed, a large-diameter hole is opened on one half of the left and right sides of the bottom plate. The upper shutter and the lower shutter are rotated by approximately 180 degrees with respect to the bottom plate from the state in which the compound fertilizer is sprayed so as to be in a state of being overlapped with the feeding hole, and in this state, the connecting rod is connected to the connecting portion. So that this assembly The changes 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.

Further, the upper shutter and the lower shutter, which are overlapped with each other so as to form a three-layer stack on a bottom plate having a feed hole formed by overlapping two sheets, are rotated by about 180 degrees about the center drive shaft. In order to smoothly switch the spraying state between the chemical fertilizer and the organic fertilizer by rotating and reconnecting to the operation lever, the connecting portion provided on the peripheral portion of the upper shutter and the lower shutter is provided with a peripheral portion. It is effective to provide a plurality of parts that are displaced in the direction in parallel in a plurality of directions, so that when switching between chemical fertilizer and organic fertilizer is changed, an appropriate connecting part can be selected and connected. .

[0027]

Next, an embodiment will be described with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 2 is a longitudinal sectional side view of a broadcaster-type fertilizer spreader embodying the present invention. In FIG. 2, F is a body frame, and a tractor or the like is pulled on the front side as shown in FIG. Left and right lower link hitches 10 for connecting and attaching to the rear side of the vehicle body via three-point link hitches
10 and a top link hitch 11 are provided.

M is a transmission case mounted on the body frame F. The input shaft 1 is supported on the front side and the transmission case is mounted on the upper side.
The center drive shaft 2 and an outer cylinder shaft 3 rotating coaxially with the center drive shaft 2 are supported so as to stand upright, and internally, the rotational power input from the input shaft 1 as shown in FIG. Gear G2
A transmission path d1 that is decelerated and transmitted to the center drive shaft 2
And a transmission path d2 that transmits the outer cylinder shaft 3 at a constant speed or an increased speed by the gear G3 and the gear G4.

Reference numeral c denotes an impeller cover arranged above the transmission case M and mounted on the body frame F. Inside the impeller cover, a shaft center portion is connected to the upper end portion of the outer cylinder shaft 3 described above. An impeller 4 rotated by the outer cylinder shaft 3 is stored.

Reference numeral 5 denotes a hopper arranged above the impeller cover c and mounted on the body frame F, into which the upper extension 2a of the central drive shaft 2 projects.
A shaft cylinder 20 connected to the upper extension 2a via the clutch K is rotatably inserted into the shaft cylinder 20.
An agitator e is attached via a stay 21.

Reference numeral 50 denotes a bottom plate of the hopper 5, which is formed in a dish-like shape having an assembling flange 500 on a peripheral edge thereof as shown in FIGS. 5
2 and a feeding hole 51 are provided.

The center hole 52 is a shaft hole into which the center drive shaft 2 is rotatably fitted, and is formed at the center of the bottom wall 501.

The feeding hole 51 is a hole for sequentially feeding the fertilizer in the hopper 5, and as shown in FIG.
1 is formed in an arc-shaped elongate hole concentric with the center hole 52 on the front half side (right half side in the figure) when it is divided into two in the front and back (right and left sides in the figure) with a virtual center line passing through the center hole 52. And the length thereof in the longitudinal direction (circumferential direction) is formed so as to extend over an angle range of about 180 degrees centering on the center hole 52, whereby the front half of the bottom wall 501 is formed. Is formed so as to open substantially the entire surface.

9 and 10, 6 and 7
Are an upper shutter and a lower shutter which are used in a state where two sheets are overlapped and overlapped on the lower surface of the bottom plate 50 so as to be three sheets.

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 central holes formed in the center portions of the respective shaft portions so as to be inserted into the central drive shaft 2. The holes, 61 and 71, are large-diameter holes opened in the shutters, and 62 and 72 are small-diameter holes opened in the shutters.

The large diameter holes 61 and 71 are provided in the hopper 5 described above.
The bottom plate 50 is formed in an arc-shaped elongated hole having substantially the same shape as the feed-out hole 51 formed in the bottom plate 50, and is opened in the latter half of each of the upper shutter 6 and the lower shutter 7.

The small-diameter holes 62 and 72 are formed on the first half sides of the upper shutter 6 and the lower shutter 7, respectively.
In the clockwise direction centered at 0, a long hole-shaped large-diameter hole 61 which is delayed in that direction is opened at a position close to the front end edge 61a. Is a rear end edge 71b of the large-diameter hole 71 that has advanced in the above-described direction.
It is set up in a part close to.

The operation of the upper and lower shutters 63 and 73 is supported by the upper and lower shutters 6 and 7 which are pivoted up and down about the fulcrum shaft 80 on the body frame F as shown in FIGS. The upper shutter is connected to the operation lever 81 via a connection mechanism so that the lever 81 is rotated about the center drive shaft 2 and the opening degree of the feeding hole 51 can be adjusted and adjusted by the rotation of the lever 81. 6 and the lower shutter 7 are provided so as to radially protrude from the peripheral edge of the first half side where the small-diameter holes 62 and 72 are opened, and to the portions whose positions are changed in the circumferential direction, respectively. They are provided so that they can be selected from them and linked.

The connection between the connecting portions 63 and 73 and the operation lever 81 is performed by the operation lever 81 which is supported by a fixed fulcrum shaft 80 provided on the body frame F as shown in FIGS. An arm 82 that rotates integrally is provided, and this is connected to a rotation arm 84 that is pivotally supported on the body frame F so as to rotate back and forth about a rotation shaft 83 by a detachable connection pin p. One ends of connecting rods 86 are connected to upper ends of operating arms 85 provided on the rotating shaft 83 so as to rotate integrally with the rotating arm 84,
The other ends are connected to the connecting portions 63 and 73, respectively.

Then, the operating lever 81 of this linking mechanism is
A connection hole 87, which is a connection point of a detachable connection pin p between an arm 82 that rotates about a fulcrum shaft 80 and a rotation arm 84 that rotates about a rotation shaft 83,
The two connecting holes 87-1 and 87-2 are provided at two different positions from the fulcrum shaft 81 as shown in FIG. 7 by selecting these and replacing the connecting pin p. When the arm 82 rotates by a predetermined angle, the amount of rotation of the operating arm 85 by which the arm 82 rotates is small, and therefore, the amount of movement of the connecting rod 86 is small. 8, the amount of rotation of the operating arm 85 when the arm 82 rotates by a predetermined angle increases, and therefore, the amount of movement of the connecting rod 86 increases, thereby switching to a state adapted to the application of compost. Is performed.

FIGS. 12 to 27 show two shutter plates of the upper shutter 6 and the lower shutter 7 with their center holes 60.
70 is fitted to the center drive shaft 2 and assembled on the lower surface side of the bottom plate 50 of the hopper 5, and the connecting portions 63
This is an explanation for explaining the mode of connection when 73 and 73 are connected to the operation lever 81 via a connection mechanism as a state adapted to fertilizers to be sprayed such as chemical fertilizers and organic fertilizers.

That is, when granular or powdery chemical fertilizer is put into the hopper 5 and sprayed, the upper shutter 6 and the lower shutter 7 are connected to one half of them as shown in FIGS. Large-diameter holes 61 and 71 established on the side
Are positioned substantially on the lower surface of the bottom half of the bottom plate 50, which is a blind plate, and the small-diameter holes 62 and 72 formed in the other half are formed in the front half of the bottom plate 50 in which the feeding holes 51 are formed. When the connecting portion 63 of the upper shutter 6 is in the state of being positioned on the lower surface and the direction of the arrow A of the thin line in the drawing is the rotation direction of the impeller 4, the feeding hole 51 of the bottom plate 50 The connecting portion 73 of the lower shutter 7 protrudes toward the front end side (downward in the figure) in the rotation direction of the impeller 4 on the opened front half, and the rotation direction of the impeller 4 on the front half side of the bottom plate 50. In this state, the connecting rods 86 are connected to each other as shown in FIG.

At this time, the connecting rods 86, 86 are closer to the connecting portions 63, 73 of the upper shutter 6 and the connecting portions 73, 73 of the lower shutter 7, respectively.
Select 3 and connect.

Thus, the operation of the operation lever 81 causes the two shutter plates, the upper shutter 6 and the lower shutter 7, to rotate with respect to the feeding hole 51 of the bottom plate 50 and to a position where the shutter plate overlaps the lower surface of the feeding hole 51. The desired degree of opening can be adjusted between a state in which certain small-diameter holes 62 and 72 are fully opened as shown in FIG. 15 and a state in which they are fully closed as shown in FIG.

When an organic fertilizer such as compost is put into the hopper 5 and it is to be sprayed, the upper shutter 6 and the lower shutter 7 are connected to each other as shown in FIGS. Large-diameter holes 61 and 71 established on one side
Are located on the lower surface of the front half side where the feeding hole 51 of the bottom plate 50 is opened, and the small-diameter holes 62 and 72 opened on the other half side.
Are located on the lower surface of the rear half of the bottom plate 50, which is a blind plate. At this time, the connecting portions 63 of the upper shutter 6 project upward in FIG. In this state, as shown in FIG. 10, the connecting rod 86 is protruded downward.
・ Link to 86.

At this time, the connecting rods 86 are connected to the closer connecting part of the connecting parts 63 and 63 and the connecting parts 73 provided in parallel with the upper shutter 6 and the lower shutter 7 in the circumferential direction. Select 63 and 73 to link,
Because the connecting portions 63 and 73 on the near side rotate the upper shutter 6 and the lower shutter 7 approximately 180 degrees about the center of the central drive shaft 2 from the state corresponding to the above-described spraying of the chemical fertilizer. Apart from the linking portions 63 and 73 when the compounding fertilizer is sprayed, the linking portions 63 and 73 on the side that is idle when linked to the compounding fertilizer spraying.
Becomes

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 to make the small-diameter holes of the upper shutter 6 and the lower shutter 7 as shown in FIG. 62 and 72 are located on the lower surface side of the rear half of the bottom plate 50 of the hopper 5 which is a blind plate, and the large-diameter holes 61 and 71 are located on the lower surface side of the front half of the bottom plate 50 and the supply hole. From the state in which the bottom plate 50 is fully opened, as shown in FIG.
Are located on the lower surface side of the rear half side, which is the blind plate of the upper shutter 6, and the portion located below the feeding hole 51 of the bottom plate 50 of the large diameter holes 61 and 71 is the blind plate of the upper shutter 6 and the lower shutter 7. The opening of the feeding hole 51 can be adjusted to a desired opening by freely rotating between a state where the feeding hole 51 is completely closed and a state where the feeding hole 51 is completely closed.

[0049]

As described above, in the fertilizer spreader according to the present invention, a feed hole formed in the bottom plate of the hopper is formed on one half of the bottom plate, and the opening of the feed hole is adjusted. The shutter is a two-layer stack of an upper shutter and a lower shutter, each rotating, and the upper shutter and the lower shutter are provided with a large-diameter hole corresponding to the extension hole on one half side and a small-diameter hole on the other half side. A hole is opened, and the small-diameter hole is opened at a position displaced in the rotation direction in relation to the upper shutter and the lower shutter, and the upper shutter and the lower shutter are provided with a large-diameter provided therein. The hole overlaps with the other half of the bottom plate of the hopper, which is a blind plate, and the small-diameter hole overlaps with the feed hole of the bottom plate and is connected to the operation lever. The aperture of the bore is adjusted And the large diameter holes provided in the upper and lower shutters overlap with the feed holes in the bottom plate of the hopper, and the small diameter holes overlap with the other half of the bottom plate of the hopper, which is a blind plate. By linking, it is possible to switch to a state where the opening of the large diameter hole is adjusted while the small diameter hole is fully closed, so that the chemical fertilizer with good fluidity and the organic fertilizer with poor fluidity A simple mechanism that combines two shutters in a stack of two and superimposes them on the bottom plate of the hopper to form a stack of three so that the adjustment and control of the feeding amount can be performed in a state adapted to each property. Become.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional 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 vertical sectional side view of a mission part of the fertilizer spreader according to the first embodiment.

FIG. 4 is a side view of the fertilizer spreader according to the first embodiment.

FIG. 5 is a plan view of the fertilizer spreader according to the first embodiment.

FIG. 6 is a front view of the fertilizer spreader according to the first embodiment.

FIG. 7 is a side view of the linking mechanism of the shutter and the operation lever when the chemical fertilizer of the fertilizer spreader is sprayed.

FIG. 8 is a side view of the linking mechanism in the same state as in the state of dispersing compost.

FIG. 9 is a perspective view of a main part of a linking mechanism when the chemical fertilizer is sprayed between the shutter and the operation lever.

FIG. 10 is a perspective view of the connecting mechanism in the same state when the compost is being spread.

FIG. 11 is a plan view of an upper shutter and a lower shutter of the above.

FIG. 12 is a plan view of a 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 lower shutter in the same state as above.

FIG. 15 is a plan view showing a state where the bottom plate, the upper shutter, and the lower shutter are overlapped and combined with each other;

FIG. 16 is a plan view of the bottom plate of the hopper when the feeding hole for dispersing the 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 overlap each other in the same state.

FIG. 20 is a plan view of the bottom plate of the hopper when the feeding hole for dispersing 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 showing a state where the bottom plate, the upper shutter, and the lower shutter are overlapped in the above-mentioned state.

FIG. 24 is a plan view of the bottom plate of the hopper when the feeding hole for dispersing 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 a state where the bottom plate, the upper shutter, and the lower shutter are overlapped in the above state.

[Explanation of symbols]

A: Fertilizer spreader, D: Transmission mechanism, G1, G2, G3, G
Reference numeral 4: gear, F: body frame, K: clutch, M: transmission 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, 1
DESCRIPTION OF SYMBOLS 1 ... Top link hitch, 2 ... Center drive shaft, 2a ... Upper extension part, 20 ... Shaft tube, 21 ... Stay, 3 ... Outer tube shaft, 4 ...
Impeller, 5: Hopper, 50: Bottom plate, 500: Assembled collar,
Reference numeral 501: bottom wall, 51: outlet, 52: center hole, 6: upper shutter, 60: center hole, 61: large diameter hole, 61a: front end edge, 62: small diameter hole, 63: connecting portion, 7: lower portion Shutter,
70: center hole, 71: large diameter hole, 71b: rear edge, 72
... Small bore hole, 73 ... Connection part, 80 ... Support shaft, 81 ... Operation lever, 82 ... Arm, 83 ... Rotation axis, 84 ... Rotation arm, 85 ... Operation arm, 86 ... Connection rod, 87 ... Connection hole .

Claims (4)

[Claims] 1. A dispensing hole formed in a bottom plate of a hopper is formed on one half when the bottom plate is divided into two parts by an imaginary center line passing through a center hole into which a center drive shaft is inserted, and the other half of the bottom plate is formed. A blind plate and two shutters, an upper shutter and a lower shutter, each of which freely overlaps with the bottom plate so as to adjust the degree of opening of the feeding hole, and which rotate freely around the center drive shaft and overlap vertically. The upper and lower shutters
On one half side, large-diameter holes corresponding to the feeding holes formed in the bottom plate are respectively opened, and on the other half side, small-diameter holes are respectively opened, and the small-diameter holes are provided between the upper shutter and the lower shutter. The upper and lower shutters are opened at positions displaced in the rotational direction in relation to each other, and the upper shutter and the lower shutter are overlapped on the other half side of the bottom plate of the hopper, which is a blind plate of the bottom plate of the hopper. The state where the hole overlaps with the operation hole of the bottom plate and the state where it is connected to the operation lever, the large diameter hole provided in them overlaps with the extension hole of the bottom plate of the hopper, and the small diameter hole becomes the blind plate of the bottom plate. A fertilizer dispensing device in a fertilizer spreader, wherein the device can be switched between a state in which it is connected to an operation lever and a state in which it is superimposed on a half side. 2. 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 upside down.
An apparatus for feeding a fertilizer in the fertilizer spreader according to the above. 3. A peripheral part of the upper shutter and the lower shutter, which are provided at a plurality of positions displaced in a circumferential direction of the peripheral parts of the peripheral parts of the upper and lower shutters. The fertilizer feeding device in the fertilizer spreader according to claim 1, wherein 4. 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, the lower shutter and the operation lever. For feeding fertilizers in Japan.