JP2010279257A - Fertilizer-feeding device of fertilizer spreader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fertilizer-feeding device of a fertilizer spreader, in which feeding holes opened in the bottom plate portion of a fertilizer hopper are formed in a transverse convex-like shape to accurately spread a powdery or granular fertilizer, and which can discharge a fully ripened organic fertilizer in a sufficient feeding rate without clogging the tip side narrow portions of transverse convex-like feeding holes and without lowering a fertilizer feeding work speed from the feeding holes, when the fully ripened organic fertilizer is spread. <P>SOLUTION: The lateral direction opening width in a base end side large width portion of each of transverse convex-like shape feeding holes formed in a bottom plate portion approximately corresponds to each of the lateral direction opening widths of rectangular hole-like shutter holes disposed in the shutter plate, and the longitudinal direction opening width corresponds to each of the longitudinal direction opening widths of the shutter holes. A tip end side small width portion has a small width formed by narrowing the longitudinal opening width from the approximately longitudinal central portion of the large width portion, and is formed in the bottom plate in a shape projected in an about half length on the basis of the lateral opening width of the shutter hole. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fertilizer spreader in a form called lime sower, in which a fertilizer charged in a fertilizer hopper attached to and mounted on a tractor body is discharged from a feed hole provided in a bottom plate of the fertilizer hopper and sprayed. It is related with the improvement about the feeding apparatus which pays out fertilizer from a feeding hole.

  As shown in FIG. 1, the fertilizer spreader A in a form called lime sower is usually equipped with a connecting hitch portion 10 for connecting and mounting to a tractor (not shown) on the front side (left side in the figure). A fertilizer hopper 2 that is formed horizontally in the left-right direction is mounted on the rear surface side of the damped body frame 1, and a feeding hole 3 for feeding out the chemical fertilizer that has been put into the fertilizer hopper 2, and its feeding hole 3. A shutter plate 4 having a shutter hole 40 for adjusting the degree of opening of the fertilizer is provided, and the fertilizer hopper 2 is provided with an agitator 5 for stirring and flowing the chemical fertilizer charged therein.

The feeding device for feeding the fertilizer from the feeding hole 3 to the shutter hole 40 serving as a spraying port of the fertilizer spreader A of this form is a bottom plate portion of the bottom portion of the fertilizer hopper 2 formed in a bowl shape with a narrow front and rear width and a long left and right. 2, as shown in FIG. 2, one half side (right half side in FIG. 2) which is the sliding direction of the shutter plate 4 is a narrow portion 3a having a narrow front and rear width, and the other half side is a wide expansion having a wide front and rear width. The laterally extending feeding holes 3 serving as the width portions 3b are opened in parallel in the left-right direction at predetermined pitch intervals, and a shutter that slides in the left-right direction on the lower surface side of the bottom plate portion 20 is provided. A plate 4 is provided, and the shutter plate 4 has an opening width d2 in the front-rear direction substantially corresponding to an opening width d1 in the front-rear direction of the widened portion 3b of the feeding hole 3, as shown in FIG. L2 is the base of the widened portion 3b from the tip of the narrowed portion 3a of the feeding hole 3. The lateral direction substantially corresponding square angular hole shape of the shutter hole 40 to the opening width L1 leading to, keep in opened by parallel at intervals pitch corresponding to the spacing pitch of the feeding hole 3 described above,
When the shutter plate 4 is pulled out to a predetermined position as shown in FIG. 4, the shutter hole 40 occupies a position away from the lower surface of the feed hole 3 opened in parallel with the bottom plate portion 20, The opening degree of 3 is fully closed,
When the shutter plate 4 is inserted a little and the shutter hole 40 overlaps approximately half of the left and right opening widths with approximately half of the left and right opening lengths as shown in FIG. Only the narrow part 3a is opened,
When the shutter plate 4 is inserted to the limit so that the shutter hole 40 is completely overlapped with the lower surface of the feeding hole 3 as shown in FIG. 6, all of the narrow portion 3a and the widened portion 3b of the feeding hole 3 Is configured to be in an open state.

  Then, above the fertilizer feeding device, at the lower part in the fertilizer hopper 2, the agitator shaft 50 that rotates by the left-right axis, the stirring blade 51, and the feeding hole 3 provided in the bottom plate portion 20 described above, respectively. The agitator 5 mounted in parallel at the corresponding interval pitch is mounted so that the fertilizer is uniformly discharged from the feed hole 3.

  The fertilizer feeding device in the fertilizer spreader of the form called lime sower configured in this way is developed for the spraying of powdered and granular chemical fertilizer, and the spraying of powdered and granular fertilizer is accurate Although it can be done well, when using fully-ripened organic fertilizer as the fertilizer to be sprayed, this fully-ripened organic fertilizer must have a small amount of fertilizer component, so the amount of application per area must be increased and the fluidity is poor Therefore, there is a problem that the work speed is lowered by the restriction of the feed amount from the opening hole of the opening hole, the work efficiency is lowered, the feed hole is easily clogged, and the dispersion accuracy and the dispersion amount are varied. Come.

  In particular, in order to disperse powdery and granular fertilizer with high accuracy, the narrow portion 3a on the tip side of the feeding hole 3 formed in a laterally convex shape is likely to be clogged, resulting in variation in the amount of application. It is a cause of squeezing.

  The problem to be solved in the present invention is to form a feed hole to be opened in a laterally convex shape in the bottom plate portion of the fertilizer hopper so that powdery and granular fertilizer can be accurately dispersed. When the fertilizer feeding device of the fertilizer spreader is spraying the fully-ripened organic fertilizer, it does not clog the narrow part on the tip side of this laterally convex feeding hole, and It exists in the point comprised so that feeding of a fertilizer can be discharged | emitted with sufficient feeding amount which does not cause the fall of work speed.

  As a means for solving the above-mentioned problems, in the present invention, the bottom plate portion of the fertilizer hopper is provided with a feed hole for feeding the fertilizer formed in a laterally convex shape, and the bottom plate portion is fed on the lower surface side. In the fertilizer feeding device of a fertilizer spreader, in which a shutter plate for opening a square square-shaped shutter hole for adjusting the opening of the hole is slidably provided, a laterally convex feeding hole formed in the bottom plate portion 20 3, the opening width L1 in the left-right direction substantially corresponds to the opening width L2 in the left-right direction of the square hole-shaped shutter hole 40 provided in the shutter plate 4, The opening width d1 in the direction substantially corresponds to the opening width d2 in the front-rear direction of the shutter hole 40. In the narrow-width portion 3a on the distal end side, the front and rear A narrow width with a narrow opening width, left of the shutter hole 40 Is intended to raise the feeding device of fertilizer manure spreaders, characterized in that opened formed to the bottom plate portion 20 substantially in half forms protruding length of the opening width of.

  The fertilizer spreading device in the fertilizer spreader according to the means of the present invention is in a position where the shutter plate 4 is slightly pulled out, and the shutter hole 40 occupies a position off the lower surface of the feeding hole 3 provided in the bottom plate portion 20. In the state where the feeding hole 3 is fully closed, the shutter plate 4 is inserted a little so that the shutter hole 40 is superposed on the lower surface of the narrow part 3a of the feeding hole 3, and the narrow part 3a of the feeding hole 3 is placed. If only the shutter plate 4 is inserted and the shutter hole 40 overlaps the lower surface of the widened portion 3b of the feed hole 3, the widened portion of the feed hole 3 is opened. 3b opens completely, and is in a state suitable for mass spraying. At this time, since the narrow part 3a of the feeding hole 3 occupies a position off the shutter hole 40 and is in a closed state, it is assumed that there is no clogging that occurs in the narrow part during mass spraying.

  From this, it is possible to accurately disperse small amounts of powdered and granular fertilizers, and to disperse large amounts of fully-ripened organic fertilizers accurately without causing clogging. Moreover, since the opening area of the widened portion is widened, the amount of spray from the shutter hole 40 can be increased, and work efficiency when a large amount of fully-ripened organic fertilizer is sprayed is prevented from being lowered.

It is a side view of the fertilizer spreader of the form called lime sower. It is explanatory drawing which expand | deployed the bottom part of the fertilizer hopper of the fertilizer spreader same as the above. It is explanatory drawing which shows the form of the delivery hole provided in a bottom part, and the shutter hole by the one part enlarged view of a fertilizer hopper bottom same as the above. It is the expanded explanatory view which shows the state by which the shutter plate of the bottom part of the same fertilizer hopper was pulled out to the reference position, and the delivery hole was closed by the shutter plate in the fully closed state. The bottom of the same fertilizer hopper, the shutter plate is inserted a little, the shutter hole is overlapped only on the lower surface of the narrow part on the tip side of the feed hole, and shows the state where the narrow part of the feed hole is opened, FIG. It is explanatory drawing which expand | deployed the bottom part of the fertilizer hopper same as the above which shows the state which the shutter plate was inserted deeply and the shutter hole overlapped with the lower surface of the whole region of the feeding hole, and the feeding hole was fully opened. It is a top view of each part of the baseplate part of the fertilizer hopper which opened the feeding hole, and the shutter board which opened the shutter hole of the fertilizer feeding apparatus in the fertilizer spreader by the means of this invention. It is explanatory drawing explaining the relationship between the shape and magnitude | size of the delivery hole provided in the baseplate part of a fertilizer hopper, and the shape and magnitude | size of the shutter hole opened in a shutter board | plate of the fertilizer delivery apparatus in a fertilizer spreader same as the above. Explains the position of the fertilizer feeding device of the same fertilizer spreader when the opening of the feeding hole is adjusted by sliding the shutter plate and the position of the opening part of the feeding hole and the position of the stirring blade provided on the adjuster shaft For this purpose, the bottom of the fertilizer hopper is developed and a state in which the shutter plate is pulled out to the reference position and the feeding hole is fully closed is shown. It is explanatory drawing which developed the bottom part of the fertilizer hopper same as the above, and shows a state where the shutter plate is inserted a little and the shutter hole is overlapped only with the narrow part of the feeding hole, and the feeding hole is set to an opening degree suitable for small amount spraying. . It is explanatory drawing same as the above and shows the state which inserted the shutter plate deeply to the limit and opened all the wide parts of the feeding hole.

  Next, embodiments will be described in detail with reference to the accompanying drawings.

  In (a) of FIG. 7, 20 indicates a bottom plate portion of the fertilizer hopper 2 of the lime sower type fertilizer spreader, 3 indicates a feeding hole opened in parallel with the bottom plate portion at a predetermined pitch interval, Further, in FIG. 7B, 4 is a shutter plate slidably mounted on the lower surface side of the bottom plate portion of the fertilizer hopper 2, and 40 corresponds to the interval pitch of the feeding hole 3 described above on the shutter plate. The shutter holes opened in parallel with multiple intervals with the interval pitch are shown.

  The bottom plate portion 20 of the fertilizer hopper 2 is formed in a bowl shape like the bottom plate portion 20 of the fertilizer hopper 2 of the conventional fertilizer spreader shown in FIG.

  As with the feeding hole 3 of the conventional means, the feeding hole 3 opened in parallel with the bottom plate portion 20 has a leading end side (right end side in the drawing) in the direction with respect to the drawing direction of the shutter plate 4. The narrow part 3a having a narrow front and rear (up and down in the figure), and the base end side is formed into a laterally convex shape that becomes the widened part 3b with the front and rear width widened. In the widened portion 3b, the opening width L1 in the left-right direction substantially corresponds to the opening width L2 in the left-right direction of the square hole-shaped shutter hole 40 provided in the shutter plate 4, and the opening width d1 in the front-rear direction is the shutter hole. It is formed in a shape substantially corresponding to the opening width d2 in the front-rear direction of 40, and is provided on the narrow side portion 3a on the distal end side provided so as to project narrowly from the front and rear intermediate portions on the distal end side of the widened portion 3b. The width of the front and rear is narrowed from the substantially central portion of the front and rear of the widened portion 3b. A thin width, like the Hosohaba portion 3a of the feeding holes 3 in conventional means, formed in a form protruding length of substantially half of the opening width in the lateral direction of the shutter hole 40.

  As a result, when the shutter plate 4 is pulled out to the specified position, as shown in FIG. 3 is fully closed by the shutter plate 4, and when the shutter plate 4 is inserted a little, the left half of the shutter hole 40 is the narrow width of the feed hole 3 as shown in FIG. As shown in FIG. 8 (c), when the base portion of the portion 3a is advanced to the lower surface position, only the narrow portion 3a is opened, and the shutter plate 4 is inserted to the limit position. Then, the shutter hole 40 advances to a position where it overlaps with the lower surface of the widened portion 3b of the feeding hole 3, the widened portion 3b of the feeding hole 3 is opened completely, and the narrow portion 3a of the feeding hole 3 is opened to the shutter. The narrow portion 3a is projected from the lower surface of the hole 40, and the narrow portion 3a is a shutter plate. It is configured to be a state of closed in.

  And the feed hole 3 provided in the baseplate part 20 of the fertilizer hopper 2 as such a form distributes the feed of the fertilizer from the feed hole 3 uniformly in the upper part of the feed hole 3 in the bottom part in the fertilizer hopper 2. As shown in FIG. 9, the position of the stirring blade 51 mounted in parallel with the agitator shaft 50 is rotated in the positional relationship with the stirring blade 51 of the agitator that is mounted in order to maintain good accuracy. The position where the fertilizer is stirred by is set so that it substantially corresponds to the narrow portion 3 a of the feed hole 3 opened in the bottom plate portion 20.

  From this, the fertilizer stirring action by the stirring blade 51 is as shown in FIG. 10, when only the narrow part 3a of the feed hole 3 is opened by the shutter hole 40 and sprayed in a small amount, the fertilizer feed hole. 11 is used to improve the spraying accuracy by making the feed from 3 uniform, but as shown in FIG. 11, when the widening portion 3b of the feed hole 3 is fully opened and the narrow portion 3a is closed, The stirring action part of the stirring blade 51 is positioned above the closed narrow part 3a, so that the effect of the stirring action is hardly obtained.

  Therefore, in this embodiment, only when a small amount of powdered and granular chemical fertilizer is sprayed, the effect of homogenization by the stirring blade 51 and improvement of spraying accuracy can be obtained.

A Fertilizer spreader L1 L2 Opening width in the left-right direction d1 d2 Opening width in the front-rear direction 1 Airframe frame 10 Connecting hitch part 2 Fertilizer hopper 20 Bottom plate part 3 Feeding hole 3a Narrow part 3b Widening part 4 Shutter plate 40 Shutter hole 5 Agitator 50 Agitator shaft 51 Stirring blade

Claims (1)

  A fertilizer feed-out hole is formed in the bottom plate part of the fertilizer hopper in a horizontal convex shape, and a square square shutter hole that adjusts the opening of the feed hole is formed on the lower surface side of the bottom plate part. In the fertilizer feeding device of the fertilizer spreader in which the shutter plate to be opened is slidably provided, the laterally convex feeding hole (3) formed in the bottom plate portion (20) is provided with a widened portion on the base end side thereof. In (3b), the opening width in the left-right direction substantially corresponds to the opening width in the left-right direction of the square hole-shaped shutter hole (40) provided in the shutter plate (4), and the opening width in the front-rear direction is the shutter hole ( 40) in the form substantially corresponding to the opening width in the front-rear direction, and in the narrow-width part (3a) on the distal end side, the opening width in the front-rear direction is narrowed from the substantially central part before and after the widening part (3b). With a narrow width that protrudes to approximately half the left and right opening width of the shutter hole (40) It was opened in the bottom plate portion (20) formed on the feeding device of fertilizer manure spreaders, characterized in.

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