JP4498586B2 - Fertilizer spreader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fertilizer spreader that is attached to a vehicle such as a tractor and spreads fertilizer.
[0002]
[Prior art]
As shown in FIG. 5, a swinging fertilizer spreader 61 attached to a vehicle such as a tractor 60 sprays the fertilizer in the hopper 62 with a spout 63 swinging around a vertical axis.
[0003]
The hopper 62 is formed in a substantially funnel shape, and a fertilizer such as a chemical fertilizer or an organic fertilizer is supplied from a large-diameter opening 64 formed at the upper end. The fertilizer in the hopper 62 is supplied to the spout 63 from a small-diameter opening (not shown) formed at the lower end of the hopper 62.
[0004]
The spout 63 is configured to swing around the vertical axis with the discharge port 65 directed rearward, and fertilizer is sprayed rearward of the tractor 60.
[0005]
[Problems to be solved by the invention]
By the way, since the hopper 62 is formed so as to squeeze downward to guide the fertilizer to the spout 63, it is not possible to spray fertilizer that easily bridges in the hopper 62, such as organic fertilizer with a lot of water.
[0006]
On the other hand, in a spinner type fertilizer spreader (not shown) in which a rotating spreading blade (not shown) is provided below the hopper 62 instead of the spout 63, the axis of the spreading blade is extended into the hopper. There are some that prevent the bridge in the hopper 62 by providing a stirring blade (not shown) for stirring the fertilizer on the shaft, but in order to fly the fertilizer by rotating the blade, However, there existed a subject that it will isolate | separate by specific gravity difference.
[0007]
Then, the objective of this invention is providing the rocking | fluctuation type fertilizer spreader which solves the said subject and can spread even if it is a fertilizer which is easy to bridge | bridge, such as organic fertilizer.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention can swing a spout for spraying fertilizer descending from a hopper around a vertical axis at a position facing a dropper of a hopper containing fertilizers such as chemical fertilizers and organic fertilizers. In the fertilizer spreader provided in the first hopper, a blade for stirring or mixing the fertilizer in the hopper is rotatably provided so as to rotate coaxially with the spout, and the first power transmission for transmitting power to the spout A second power transmission system for transmitting power to the blades is connected to the system, and a drive shaft of the second power transmission system is disposed above the inlet of the hopper, and the spout and the blades are Each has a shaft on the shaft, these shafts are rotatably connected to each other, and the shaft of the blade is connected to the drive shaft of the second power transmission system .
[0010]
The second power transmission system includes a hydraulic pump that is driven by the rotational driving force from the first power transmission system, and a hydraulic pump that is connected to the hydraulic pump via a pipe and receives the hydraulic pressure from the hydraulic pump. It is good to comprise with the hydraulic motor which rotates a blade | wing.
[0011]
The hydraulic motor may be provided above the blade and connected to the blade.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0015]
As shown in FIG. 1, the oscillating fertilizer spreader 1 is provided facing a hopper 2 for containing fertilizers such as chemical fertilizers and organic fertilizers, and a drop port 3 of the hopper 2, and descends from the hopper 2. The spout 4 for spraying the coming fertilizer, the stirring blade 5 that is rotatably provided in the hopper 2 for stirring the fertilizer in the hopper 2, and the driving force input from the tractor (not shown) is spouted. 4, a first power transmission system 6 for transmitting to the first power transmission system 4, a second power transmission system 7 for transmitting the driving force transmitted to the first power transmission system 6 to the stirring blade 5, and a tractor are detachably connected. And a frame 8 that supports the hopper 2 and the spout 4.
[0016]
The hopper 2 is formed in a substantially circular funnel shape in plan view, and has an inlet 9 for feeding fertilizer at the upper end and a dropping port 3 for dropping fertilizer at the lower end.
[0017]
The dropping port 3 of the hopper 2 is provided with a shutter 10 for adjusting the amount of fertilizer falling and an agitator 11 for preventing a bridge near the shutter 10.
[0018]
As shown in FIGS. 1 and 3, the shutter 10 is fixed to the dropping port 3 of the hopper 2 and has a bottom plate 13 having a hole 12 for dropping fertilizer, and a bottom plate 13 that is rotatably provided along the bottom plate 13. And a lever 15 for sliding the position of the shutter member 14 so that the position of the shutter member 14 can be fixed.
[0019]
Three holes 12 are formed in the bottom plate 13 at substantially equal intervals on the same circumference, and each of the holes is opened and closed by a shutter member 14 so that the opening degree can be adjusted.
[0020]
The agitator 11 is integrally attached to a swing shaft 17 of a spout 4 to be described later, and is formed so as to extend radially in three horizontal directions. The agitator 11 swings with the spout 4 along the upper surface of the bottom plate 13. Yes.
[0021]
The spout 4 receives fertilizer dropped from the dropping port 3 of the hopper 2 and guides it to a spray pipe 19 described later, and extends vertically from the receiving part 16 so that the receiving part 16 can swing freely. It consists of a rocking shaft 17 for supporting, and a spray pipe 19 that is connected to the receiving portion 16 and extends rearward and blows fertilizer flowing from the receiving portion 16 through an opening 18 formed at the rear end.
[0022]
The swing shaft 17 is located on the swing center axis of the spout 4. The lower end of the swing shaft 17 is pivotally supported by a swing support block 20 fixed to the frame 8, and the upper end extends above the bottom plate 13 of the shutter 10.
[0023]
The stirring blade 5 includes a rotating shaft 21 that is pivotally supported coaxially with the swing shaft 17 in the hopper 2 and a plurality of blade portions 22 that are provided on the rotating shaft 21 so as to extend in the radial direction.
[0024]
The rotary shaft 21 has a lower end rotatably connected to the upper end of the swing shaft 17 via a bush 23, and an upper end integrally connected to a drive shaft 39 of a hydraulic motor 34 described later via a bolt 24. The agitating blade 5 is positioned on the rotation center axis.
[0025]
The blade portion 22 is provided with a stirring blade 26 that is inclined along the hopper 2 at the tip of an arm portion 25 that extends radially outward from the rotary shaft 21.
[0026]
The first power transmission system 6 includes a power input shaft 27 fixed to the frame 8 and detachably connected to a PTO shaft (not shown) of the tractor via a universal drive shaft (not shown). 27, and a swinging link 29 that is inserted through the flywheel 28 with one end being eccentric and connected to the swinging shaft 17 so as to be able to be raised and lowered.
[0027]
The swing link 29 swings in the horizontal direction while being lifted up and down around the swing shaft 17 as the flywheel 28 is rotated, and the rotational driving force input from the flywheel 28 is used as the swing driving force. Instead, it is transmitted to the swing shaft 17.
[0028]
As shown in FIGS. 1 and 2, the flywheel 28 has a ring-shaped groove 31 for hanging the belt 30 on the outer periphery.
[0029]
The second power transmission system 7 is connected to the hydraulic pump 32 driven by the rotational driving force from the first power transmission system 6 and connected to the hydraulic pump 32 via a pipe 33 and receives the hydraulic pressure from the hydraulic pump 32. The hydraulic motor 34 rotates the stirring blade 5.
[0030]
The hydraulic pump 32 is fixed to the frame 8, and a driven shaft 35 of the hydraulic pump 32 is provided with a pulley 36 connected to the flywheel 28 via the belt 30.
[0031]
The pipe 33 includes a feed-side pipe 37 that sends oil sent from the discharge port of the hydraulic pump 32 to the hydraulic motor 34, and a return-side pipe (not shown) that returns the oil discharged from the hydraulic motor 34 to the hydraulic pump 32. Become.
[0032]
The hydraulic motor 34 is provided concentrically with the rotation center of the stirring blade 5 above the charging port 9 of the hopper 2 via a support fitting 38 and is connected to the drive shaft 39 so as not to rotate with each other. Has been. And the stirring blade 5 is also rotated integrally by rotating the hydraulic motor 34.
[0033]
The support fitting 38 includes a plurality of arm members 40 extending toward the center from the outer peripheral end of the hopper 2 and an annular motor fixing plate for fixing the hydraulic motor 34 supported by the arm members 40 at the center of the hopper 2. 41.
[0034]
Next, the operation will be described.
[0035]
When the power input shaft 27 is rotated by the driving force transmitted from the tractor, the flywheel 28 is rotated integrally with the power input shaft 27. Then, the end of the swing link 29 on the flywheel 28 side is rotated, and the swing link 29 is swung around the swing shaft 17 while ascending about the connection point with the swing shaft 17. 17 is swung within a range of approximately 45 degrees.
[0036]
Thereby, the spout 4 and the agitator 11 are rocked integrally with the rocking shaft 17. The agitator 11 drops the fertilizer in the hopper 2 from the hole 12 of the bottom plate 13 while stirring, and the spout 4 spreads the fertilizer dropped on the receiving portion 16 to the rear in the traveling direction of the tractor.
[0037]
On the other hand, the rotation of the flywheel 28 is transmitted to the pulley 36 via the belt 30 to drive the hydraulic pump 32. The oil discharged from the hydraulic pump 32 is sent to the hydraulic motor 34 via the feed side pipe 37, and the hydraulic motor 34 is driven to rotate.
[0038]
The oil discharged from the hydraulic motor 34 is returned to the suction side of the hydraulic pump 32 through the return side pipe.
[0039]
The rotary shaft 21 integrally connected to the drive shaft 39 of the hydraulic motor 34 is rotated, and the stirring blade 5 is rotated.
[0040]
The blade portion 22 is rotated so that the stirring blade 26 follows the inner periphery of the hopper 2 and stirs the fertilizer in the hopper 2. For this reason, even if the fertilizer in the hopper 2 is a fertilizer that easily bridges, such as an organic fertilizer, the bridge can be instantaneously broken and the hopper 2 is not clogged.
[0041]
In particular, since the stirring blade 5 is not a rocking type but a rotating type, the fertilizer can be continuously moved and can be efficiently stirred. Further, since the fertilizer is not forcedly pushed during reversal as in the swing type, the power transmission system or the like can be reduced in size without applying excessive force to the power transmission system or the like.
[0042]
Thus, the fertilizer spreader 1 which provided the spout 4 for spraying the fertilizer which descends from the hopper 2 in the dropping port 3 of the hopper 2 which accommodates fertilizers, such as a chemical fertilizer and an organic fertilizer, so that rocking was possible about the vertical axis | shaft. Therefore, since the stirring blade 5 for stirring the fertilizer is rotatably provided in the hopper 2, the fertilizer can be sprayed well with the swinging spout 4 while stirring the fertilizer efficiently.
[0043]
In addition, a first power transmission system 6 that transmits power to the spout 4 is connected to a second power transmission system 7 for transmitting power to the stirring blade 5, and the stirring blade 5 is rotated by a common drive source with the spout 4. Since it is driven, the drive system can be connected to the tractor at one place, and can be easily attached to and detached from the tractor.
[0044]
And since it is not necessary to prepare the drive source for stirring blade 5 drive newly, it can manufacture at low cost and the fertilizer spreader 1 can be provided cheaply.
[0045]
Further, the second power transmission system 7 is connected to the hydraulic pump 32 driven by the rotational driving force from the first power transmission system 6, and the hydraulic pump 32 is connected to the hydraulic pump 32 via a pipe 33. The second power transmission system 7 can be simplified because it is configured with the hydraulic motor 34 that receives and rotates the stirring blade 5. Further, the hydraulic motor 34 is provided above the stirring blade 5 and connected to the stirring blade 5. As a result, mechanically rotating parts such as gears and pulleys from around the hopper 2 can be reduced as much as possible.
[0046]
Since the hydraulic motor 34 is provided above the stirring blade 5 and connected to the stirring blade 5, the second power transmission system 7 can be further simplified and mechanically rotates around the hopper 2. Parts can be reduced.
[0047]
In addition, since the stirring blade 5 is rotated coaxially with the spout 4, the fertilizer in the hopper 2 can be stirred in a well-balanced manner, and the fertilizer is added to the spout 4 while preventing the fertilizer from being biased and stirred. Can be supplied stably.
[0048]
Since the spout 4 and the stirring blade 5 have shafts 17 and 21 on the shafts, respectively, and the shafts 17 and 21 are rotatably connected to each other, the support structure of the rotating shaft 21 of the stirring blade 5 is simplified. Can be manufactured at low cost.
[0049]
In the above-described embodiment, the rotational driving force of the flywheel 28 is transmitted to the hydraulic pump 32 by the belt 30 and the pulley 36. However, the present invention is not limited to this.
[0050]
For example, the rotational driving force of the flywheel 28 may be transmitted to the hydraulic pump 32 using other power transmission means such as a gear (not shown).
[0051]
Further, in the present embodiment, the stirring blade 5 is rotatably provided in the hopper 2. However, as shown in FIG. 4, the mixing blade 50 for mixing fertilizer is rotatable instead of the stirring blade 5. It is good also as what is provided in.
[0052]
In this case, it is preferable to use a screw conveyor 51 as the mixing blade 50 and forcibly feed the fertilizer in the hopper 2 upward from the bottom of the hopper 2. A fertilizer circulation flow 52 can be formed in the hopper 2, and a plurality of types of fertilizers can be efficiently sprayed with the rocking spout 4 while being efficiently mixed.
[0053]
【The invention's effect】
In short, according to the present invention, the following excellent effects can be obtained.
(1) Even a fertilizer that is easy to bridge, such as an organic fertilizer, can be sprayed well.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a rocking fertilizer spreader showing a preferred embodiment of the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a side cross-sectional view of a rocking fertilizer spreader showing another embodiment.
FIG. 5 is a side view of a conventional oscillating spreader.
[Explanation of symbols]
1 Fertilizer spreader 2 Hopper 3 Drop port 4 Spout 5 Stirring blade (blade)
6 First power transmission system 7 Second power transmission system 17 Oscillating shaft (shaft)
21 Rotating shaft (shaft)
32 Hydraulic pump 33 Piping 34 Hydraulic motor 50 Mixing blade (blade)

Claims (3)

In a fertilizer spreader in which a spout for spraying fertilizer descending from the hopper is provided at a position facing the dropper of a hopper that accommodates fertilizers such as chemical fertilizers and organic fertilizers. A blade for stirring or mixing the fertilizer is rotatably provided so as to rotate coaxially with the spout, and power is transmitted to the blade to a first power transmission system that transmits power to the spout. The second power transmission system is coupled, and the drive shaft of the second power transmission system is disposed above the inlet of the hopper, and the spout and the blade each have a shaft on the shaft. together but are rotatably connected to each other, manure spreaders shaft of the blade is characterized in that it is connected to a drive shaft of said second power transmission system. The second power transmission system includes a hydraulic pump that is driven by the rotational driving force from the first power transmission system, and a hydraulic pump that is connected to the hydraulic pump via a pipe and receives the hydraulic pressure from the hydraulic pump. manure spreaders according to claim 1, wherein ing from a hydraulic motor for rotating. The fertilizer spreader according to claim 2, wherein the hydraulic motor is provided above the blades and connected to the blades .

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