JP5337580B2 - Fertilizer feeding device in fertilizer spreader - Google Patents

Description

  The present invention is a fertilizer spray of a form called a lime sower in which powdered or granular chemical fertilizer charged in a fertilizer hopper mounted on the front or rear of a tractor body is sprayed from a feed hole provided in a bottom plate of the fertilizer hopper. The present invention relates to an improvement in a feeding device that feeds chemical fertilizer in a fertilizer hopper 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.

  Then, the fertilizer feeding device of this fertilizer spreader is provided with a feeding hole 3 on the bottom portion of the fertilizer hopper 2 with a narrow width in the front-rear direction and a long continuous shape as shown in FIG. The shutter plate 4 is formed on the lower surface side of the bottom plate 20 so as to be substantially the same shape as the bottom plate 20 and the left and right side edges thereof and the left and right sides of the bottom plate 20. When the slide plate 4 is slidably fitted with a guide mounted on the portion, and is detachably inserted in the left-right direction, and the shutter plate 4 is overlapped with the feeding hole 3 provided in the bottom plate 20 described above, A shutter hole 40 having a width that completely encloses the feeding hole 3 is formed in a square hole shape, and is opened at an interval pitch corresponding to the interval pitch of the feeding hole 3 described above. The left and right slicing of the shutter plate 4 Thus, the degree of opening of each feeding hole 3 is adjusted by changing the degree of polymerization between each shutter hole 40 and each feeding hole 3, and a little of the bottom plate 20 inside the fertilizer hopper 2 is adjusted. An agitator shaft 50 that crosses the fertilizer hopper 2 from side to side is mounted on the upper portion, and a stirring blade 51 that protrudes in the radial direction is provided on the peripheral surface of the shaft 50 at a pitch corresponding to the pitch between the feeding holes 3 described above. Then, one end of the agitator shaft 50 is connected to the output shaft 60 of the mission unit M provided at one side end of the fertilizer hopper 2 and connected to the input shaft 61 of the mission unit M. By rotating the tractor from the PTO shaft and driving the agitator shaft 50, the stirring blade 51 is rotated close to the bottom edge of the hopper bottom plate 20 so that the lower edge of the rotation trajectory of the blade tip is substantially in contact with the inner surface of the hopper bottom plate 20. So that the fertilizer relieved Advance so as to stir the fertilizer upper part of the feeding holes 3 charged with the fertilizer in 2.

  Further, in the feeding hole 3 described above, the front end side (the right end side in FIG. 2) in the direction in which the shutter hole 40 is superimposed on the lower surface side of the feeding hole 3 by the drawing operation of the shutter plate 4 is the front and rear in the plan view. A narrow width portion 30 having a narrow width is formed in a shape in which the rear half becomes a widened portion 31 having a width corresponding to the front and rear width of the square hole-shaped shutter hole 40, and the shutter plate 4 is shown in FIG. As shown, when the shutter hole 40 is pulled out to a position that is completely displaced from the lower surface of the feeding hole 3, the feeding hole 3 is fully closed by the shutter plate 4, but the shutter plate 4 is completely closed. When inserted a little from the closed state position, as shown in FIG. 4, when the edge on the back side of the shutter hole 40 of the square hole is located at the proximal end of the narrow portion 30 of the feeding hole 3, This feeding hole 3 is in a state where only the narrow portion 30 is opened. Then, the feed of the chemical fertilizer is narrowed down to a small amount and sprayed into a small amount, and the shutter plate 4 is further pushed in, and as shown in FIG. When it occupies a position overlapping with the rear edge, the entire feed hole 3 is superposed on the lower surface of the shutter hole 40, the feed hole 3 is fully opened, and the feed of the chemical fertilizer is increased in a large amount. Further, the stirring blades 51 provided on the agitator shaft 50 so as to correspond to the feeding holes 3 provided at the predetermined interval pitch on the agitator shaft 50 are provided as described above with reference to FIGS. In the developed explanatory view of FIG. 5, as indicated by a broken line, the stirring portion by the stirring blade 51 is set and provided so as to correspond to the narrow portion 30 of the feeding hole 3. Make up the fertilizer feeding device

  The fertilizer feeding device of the fertilizer spreader configured in this manner is a fertilizer hopper by each agitating blade 51 provided in parallel to the agitator shaft 50 supported horizontally in the fertilizer hopper 2 at a predetermined interval pitch in the axial direction. 2 is set so that the stirring portion of the chemical fertilizer in 2 is positioned above the narrow portion 30 of the feeding hole 3, the opening degree of the feeding hole 3 is reduced by the operation of the shutter plate 4, and the chemical fertilizer Even when spraying small amounts of fertilizer, it becomes possible to spray fertilizer with a uniform spray amount, but when spreading the fertilizer in large quantities by widening the opening of the feed hole 3, There is a variation in the discharge from the feeding hole 3 to reduce the spraying accuracy, resulting in a variation in the spraying amount.

  This is because the stirring blade 51 for stirring the chemical fertilizer is fixedly mounted on the agitator shaft 50 and the position thereof is fixed, so that the stirring portion of the chemical fertilizer that receives stirring by the rotation of the stirring blade 51 The position of the opening portion of the feed hole 3 is displaced in the axial direction of the agitator shaft 50 when spraying a small amount and when spraying a large amount. It is considered that the positional relationship between the fertilizer stirring portion and the opening portion of the feeding hole 3 is shifted, and the stirring portion by the stirring blade 51 is in a state where it cannot be said that it is in the optimum position.

  The problem to be solved in the present invention is that the position of the stirring portion where the fertilizer is stirred by the stirring blade of the agitator and the position of the opening portion of the feeding hole when the opening degree of the feeding hole is changed and adjusted in order to change the spray amount It is the point which eliminates the fall of the spraying precision by the dispersion | variation in the discharge of the fertilizer which arises due to the shift | offset | difference of the relative positional relationship and the dispersion amount of dispersion | distribution.

  In order to solve the above-mentioned problems, the present invention makes it possible to move the stirring blade provided on the agitator shaft in the displacement direction of the opening portion of the feeding hole when adjusting the opening degree of the feeding hole, and the position of the stirring blade is Proposes a means characterized by moving according to the position of the opening part of the feeding hole in each state of small amount spraying and large amount spraying and occupying a suitable position in each state It is.

  The fertilizer feeding device in the fertilizer spreader according to the present invention is the opening of the feeding hole when the opening degree of the feeding hole is adjusted by changing the position of the stirring blade of the agitator arranged above the feeding hole and provided in the fertilizer hopper. Because it is possible to move in the direction of displacement of the part, when the spraying state of fertilizer is switched between small amount spraying and large amount spraying by moving the position of this stirring blade, the feeding hole of each state is changed. The fertilizer stirring portion by the stirring blade can be positioned at a position adapted to the opening portion, and can be sprayed in a state of good spraying accuracy without variation in the spray amount.

It is a side view of the fertilizer spreader of the form called a lime sower. It is explanatory drawing which expand | deployed the part containing the feed hole provided in the bottom part in a fertilizer hopper and a shutter board | plate of a fertilizer spreader same as the above. FIG. 5 is an enlarged view of a part of the same part, and illustrates the positional relationship between the stirring blade of the agitator and the feeding hole provided in the bottom plate of the fertilizer hopper and the shutter hole provided in the shutter plate when the feeding hole is fully closed. FIG. It is explanatory drawing which shows the positional relationship of the stirring blade and the opening part of a delivery hole in the state which pushed in the shutter board of the same part a little and the opening degree of the delivery hole was set to small amount dispersion | distribution. It is explanatory drawing which shows the positional relationship of the stirring blade and the opening part of a feed hole in the state which pushed the shutter board | plate of the same part further, made the opening degree of a feed hole fully open, and was set to mass spraying. It is the perspective view which decomposed | disassembled the agitator part of the fertilizer supply apparatus in the fertilizer spreader which implements the means of this invention. It is a front view at the time of the state which moved the position of the stirring blade of the agitator part same as the above to the one end side (right end side) of the agitator axis | shaft, and assembled | attached the agitator axis | shaft as a position adapted at the time of small quantity dispersion | distribution. It is a front view at the time of the state which assembled | attached the agitator axis | shaft as a position which moves the position of the stirring blade of the agitator part toward the other end side of an agitator axis | shaft, and is suitable for mass spraying. It is the front view to which the edge part of the agitator axis | shaft was expanded. It is explanatory drawing explaining the process which sets an agitator to the position which adapts the stirring blade provided in it to a small quantity dispersion | distribution, and is assembled | attached to the body of a fertilizer spreader. It is explanatory drawing of the process of rearranging an agitator in order to move the stirring blade installed in an agitator to the position which adapts to mass spraying. It is explanatory drawing of the process of setting an agitator by setting the stirring blade same as the above to the position suitable for mass spraying. It is explanatory drawing which shows the positional relationship of the stirring blade in the state which fully closed the feeding hole of the fertilizer feeding apparatus of this invention means, and an opening part in a feeding hole. It is explanatory drawing which shows the positional relationship of the stirring blade and the opening part of a feeding hole at the time of pushing in the shutter board a little and making the opening degree of a feeding hole into a small amount spraying same as the above. It is explanatory drawing of the positional relationship of the stirring blade and the opening part of a feeding hole in the state which pushed the shutter plate further and made the opening degree of a feeding hole fully open, and made it a large quantity spraying.

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

  In this embodiment, in order to move the stirring blade 51 of the agitator to a position corresponding to the opening portion of the feeding hole 3, the agitator shaft 50 is moved by moving the stirring blade 51 together with the agitator shaft 50 attached to the peripheral surface. A large number of stirring blades 51 mounted in parallel on the peripheral surface of the fertilizer hopper 2 with a predetermined spacing pitch are opened in parallel with the bottom plate 20 of the fertilizer hopper 2 with a predetermined spacing pitch. In this example, each part is moved to a position corresponding to each part.

  In FIG. 6, 2 shows only a part of the figure and omits most of the figure, but shows a fertilizer hopper of the fertilizer spreader A constructed in the form of lime sower, and 5 shows the inside of the fertilizer hopper 2 A state in which the agitator is horizontally supported by the agitator shaft 50 and is pulled out from the fertilizer hopper 2 is shown at the bottom of the fertilizer hopper 2.

  The agitator 5 stores a bearing 22 supported by a bearing support rod 2b assembled to the machine wall 2a on the left and right sides of the fertilizer hopper 2 by a knob bolt 21 and a speed reduction mechanism assembled to the left and right sides of the fertilizer hopper 2. A set of four stirring blades 51 projecting in a radial direction is provided on the peripheral surface of the agitator shaft 50 that is supported between the output shaft 60 (see FIGS. 7 and 8) of the mission section M and a predetermined amount. A plurality of stirring blades 51 mounted in parallel on the agitator shaft 50 are divided into three groups in the axial direction of the agitator shaft 50, and each group is divided into three groups. Each is different in the protruding direction of the stirring blade 51 in the circumferential direction of the agitator shaft 50.

  The agitator shaft 50 is formed of a hollow steel pipe. As shown in FIG. 6 described above, when the agitator 5 is extracted, the tip side (left end side in FIG. 6) in the extraction direction is a round bar 50a. The base end side part is formed in the enlarged diameter part 50b which expanded the outer diameter.

  Then, the round bar portion 50a on the distal end side is inserted into and supported by the bearing 22 supported by the bearing support rod 2b. When the distal end side of the round bar portion 50a protrudes outside through the bearing 22, By inserting a lynch pin 53 into a pin hole 52 formed on the distal end side of the round bar portion 50a, the distal end side of the agitator shaft 50 is held in a pivotally supported state. Further, in the enlarged diameter portion 50b on the proximal end side, as shown in the enlarged view of FIG. 9, an elongated hole-shaped guide groove a along the axial direction of the agitator shaft 50, and a portion close to the back side of the groove a Branched locking grooves b and c that branch in a direction perpendicular to the groove a are formed at two locations on the end portion of the enlarged diameter portion 50b, and the enlarged diameter portion 50b is When the base end side of the agitator shaft 50 is pivotally supported on the transmission unit M via the output shaft 60 by being fitted and connected to the output shaft 60 of the transmission unit M mounted on the body frame of the fertilizer hopper 2. A locking pin P is implanted on the peripheral surface of the output shaft 60, and the locking pin P is locked in any one of the above-described locking grooves b and c, thereby connecting to the output shaft 60. Let me hold.

  The engagement / connection between the enlarged diameter portion 50b and the output shaft 60 of the transmission portion M is actually a locking pin provided with a guide groove a formed in the enlarged diameter portion 50b on the peripheral surface of the output shaft 60. In accordance with P, the enlarged diameter portion 50b is fitted to the output shaft 60 so that the locking pin P slides in the guide groove a, and the locking pin P is connected to the branch-shaped locking grooves b and c. When it reaches a position facing either, the diameter-expanded portion 50b is rotated so that the locking pin P is fitted into one of the locking grooves b and c to prevent the diameter-expanded portion 50b from escaping. Is done.

  When the diameter-enlarged portion 50b and the output shaft 60 of the transmission portion M are fitted and connected to support the agitator shaft 50 on the body frame of the fertilizer hopper 2, the locking pin P is connected to the end of the enlarged-diameter portion 50b. When the agitator shaft 50 is pivotally supported in a state where it is fitted in the locking groove b on the far side away from the edge, the proximal end side of the agitator shaft 50 is located on the inner wall surface of the mission section M as shown in FIG. As a result, the stirring blade 51 provided on the peripheral surface of the agitator shaft 50 occupies a position whose center line is separated from the center line of the mission part M by a distance L. When the locking pin P is connected to the output shaft 60 fitted in the locking groove c on the side close to the edge of the enlarged diameter portion 50b, the agitator shaft 50 is expanded as shown in FIG. The edge of the diameter part 50b is separated from the inner wall surface of the mission part M by a distance D. Is supported by a positions, it will be axially supported on the distance displaced by axially D position. Thus, the stirring blade 51 attached to the agitator shaft 50 occupies a position displaced by the distance D from the position shown in FIG. This distance D is a distance set by the interval pitch D 'between the branch-like locking grooves b and c provided side by side, and coincides with this interval pitch D'. The state shown in FIG. 7 in which the locking pin P is locked in the locking groove b on the side away from the end edge of the enlarged diameter portion 50b and the agitator shaft 50 is pivotally supported is shown in FIG. Similar to the axial support of the agitator shaft of the conventional fertilizer spreader, the agitator shaft 50 is supported by abutting the proximal end of the agitator shaft 50 against the inner wall of the transmission unit M. It is the most basic state of pivotal support.

  For this reason, the agitation blade 51 is fixedly installed on the agitator shaft 50 in this state, whereby the attachment position is set. As shown in FIG. 13, the position of the stirring blade 51 is such that the narrow portion 30 of the feeding hole 3 corresponds to the feeding hole 3 provided in the bottom plate 20 of the fertilizer hopper 2. It is set so as to be positioned at the center of the working width of stirring the fertilizer.

  The position of the stirring blade 51 is such that the shutter plate 4 is slightly pushed from the fully closed state shown in FIG. 14, the stirring portion by the stirring blade 51 is substantially centered on the narrow portion 30 of the feeding hole 3 that has opened, as shown in FIG. It is a position that is most suitable for small amount spraying.

  FIG. 8 shows that the above-described locking pin P is fitted into the locking groove c on the side close to the edge of the enlarged diameter portion 50b of the locking grooves b and c, and the agitator shaft 50 is locked. A state in which it is displaced in the axial direction by a distance D corresponding to the interval pitch of the grooves b and c and is fitted and connected to the output shaft 60 of the mission section M is shown, but this state is fixed to the agitator shaft 50. The state where the mounting position of the stirring blade 51 is displaced by the distance D is also shown.

  The position of the displaced stirring blade 51 is a position where the stirring portion corresponds to the widened portion 31 of the feeding hole 3 as shown in FIG.

  The distance D by which the agitator shaft 50 is displaced is a distance by which the stirring blade 51 is displaced so that the stirring portion occupies a position corresponding to the widened portion 31, and the position of the locking groove c is as described above. In addition, the stirring blade 51 is set to occupy a position corresponding to the widened portion 31.

  Accordingly, when the agitator shaft 50 is pivotally supported on the output shaft 60 of the transmission part M with the locking pin P fitted in the locking groove b, the stirring blade 51 is displaced to an optimum position when mass spraying. However, it is set to occupy that position.

  10 to 12, the agitator shaft 50 is pivotally supported by setting the position of the stirring blade 51 to be in a state suitable for small-quantity spraying by fitting the locking pin P and the locking groove b. It is explanatory drawing of a process when recombining the agitator axis | shaft 50 so that the stirring blade 51 may occupy the position which adapts to mass spraying from the state which is in the state.

  The agitator 5 pulls out the knob bolt 21, pulls it out from the fertilizer hopper 2 together with the bearing support rod 2b, removes the lynch pin 53, and extracts the round bar portion 50a of the agitator shaft 50 from the bearing 22 provided on the bearing support rod 2b. At this time, the ring 54 having a width corresponding to the above-described distance D to be inserted into the round bar portion 50a is extracted. Then, the round bar portion 50a is again inserted into the bearing 22 of the bearing support rod 2b from this state, and at this time, the ring 54 that has been removed protrudes outward from the bearing support rod 2b. In this state, the lynch pin 53 is inserted into the pin hole 52, and the agitator 5 is assembled integrally with the bearing support rod 2b, and in this state, is inserted into the bottom of the fertilizer hopper 2, and the diameter-enlarged portion of the agitator shaft 50 When the locking pin P provided on the output shaft 60 is inserted into the guide groove a provided on 50 b and the locking pin P comes to a position facing the locking groove c, the agitator shaft 50 is driven by the output shaft 60. The locking pin P is fitted and locked in the locking groove c by rotating in the direction opposite to the rotating direction, and in this state, the knob bolt 21 is assembled and set.

  Thereby, the agitator 5 is set and assembled at a position where the stirring blades 51 thereof are suitable for mass spraying.

A Fertilizer spreader D Distance D 'Interval pitch L Distance M Mission part P Locking pin a Guide groove b c Locking groove 1 Airframe frame 10 Connecting hitch part 2 Fertilizer hopper 2a Machine wall 2b Bearing support rod 20 Bottom plate 21 Knob bolt 22 Bearing DESCRIPTION OF SYMBOLS 3 Feeding hole 30 Narrow part 31 Wide part 4 Shutter board 40 Shutter hole 5 Agitator 50 Agitator shaft 50a Round bar 50b Diameter enlarged part 51 Stirring blade 52 Pin hole 53 Lynch pin 54 Ring 60 Output shaft 61 Input shaft

Claims (2)

  The stirring blade provided on the agitator shaft can be moved in the displacement direction of the opening portion of the feeding hole when adjusting the opening degree of the feeding hole, and the position of the stirring blade is in each state when spraying a small amount and when spraying a large amount A fertilizer feeding device in a fertilizer spreader, wherein the fertilizer spreader is moved corresponding to the position of the opening portion of the feeding hole at the time and occupies a position suitable for each state.   A bearing support rod in which one end side of the agitator shaft (50) arranged so as to cross from side to side is detachably assembled to the machine wall (2a) on one end side of the fertilizer hopper (2) at the bottom of the fertilizer hopper (2). The output of the transmission part (M) in which the other end side of the agitator shaft (50) is assembled to the other end side of the fertilizer hopper (2). The shaft (60) is fitted and connected, and on the peripheral surface of the agitator shaft (50), the stirring blade (51) is arranged in parallel in the left-right direction on the bottom plate (20) of the fertilizer hopper (2). In the fertilizer spreader of the fertilizer spreader arranged and installed so as to correspond to each of the payout holes (3) to be opened, it fits with the output shaft (60) of the transmission part (M) of the agitator shaft (50) The locking pin (P) provided on the output shaft (60) is inserted into the end of the connecting side. The guide groove (a) along the axial direction of the agitator shaft (50) to be introduced is provided, and the guide pin (P) is locked to connect the agitator shaft (50) to the output shaft (60). The locking grooves (b) and (c) branching from the groove (a) like a key are provided in parallel in a pair in the axial direction, and the locking groove (c) on the side close to the end edge When the locking pin (P) is locked to the agitator shaft (50) and the output shaft (60) is connected, the stirring blade (51) corresponds to the narrow portion (30) of the feeding hole (3). And the engagement blade (51) is positioned so as to occupy a position corresponding to the widened portion (31) of the feed hole (3). In the fertilizer spreader characterized in that the stop grooves (b) and (c) are positioned and mounted on the agitator shaft (50). Fee feeding device.

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