JP4191515B2 - Fertilizer spreader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fertilizer spreader for spraying powdered or granular fertilizer.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a fertilizer spreader that is connected to a tractor and spreads fertilizer in a field using the power of the tractor is known.
[0003]
As shown in FIGS. 14 and 15, a conventional fertilizer spreader extends in the machine width direction of a tractor (not shown), and includes a hopper H that stores fertilizer therein, and a hopper H that is rotatably provided in the hopper H. And an agitator A extending in the longitudinal direction of the hopper H, and a power input means P provided in the hopper H and for inputting the rotational driving force of the engine of the tractor to the agitator A.
[0004]
A plurality of spraying ports E (see FIG. 15) are formed at intervals in the longitudinal direction at the bottom of the hopper H, and the fertilizer in the hopper H is agitated by the blades W of the agitator A as the agitator A rotates. Then, it is sprayed on the field from each spraying port E.
[0005]
At the bottom of the hopper H, a shutter plate S for changing the opening area of the spray port E and adjusting the amount of fertilizer applied is slidable in the longitudinal direction of the hopper H.
[0006]
The power input means P is an input shaft IS connected to the engine of the tractor and a worm gear (see FIG. 5) that is provided at the end of the input shaft IS and transmits the rotation of the input shaft IS to the agitator A that is substantially orthogonal to the input shaft IS. The worm gear is accommodated in a gear box GB in the hopper H. The agitator A is connected to the left and right sides of the power input means P, respectively.
[0007]
By accommodating the power input means P in the hopper H, when the fertilizer spreader is connected to the tractor, the weight balance in the front-rear direction can be achieved.
[0008]
Such a fertilizer spreader is also described in Patent Document 1, for example.
[0009]
The fertilizer spreader described in Patent Document 1 is configured such that the spray port E is disposed symmetrically with respect to the central portion in the longitudinal direction of the hopper H, and the shutter plates S are provided on both sides of the central portion of the hopper H, respectively. With this, fertilizer can be sprayed symmetrically with respect to the central portion of the hopper H.
[0010]
[Patent Document 1]
JP-A-11-127647
[Patent Document 2]
Japanese Utility Model Publication No. 1-112616
[0011]
[Problems to be solved by the invention]
However, in such a fertilizer spreader, it is necessary to decelerate the rotation of the input shaft IS connected to the engine of the tractor with a relatively large reduction ratio (for example, about 1/10) and input it to the agitator A. The output side worm gear needs to be relatively large compared to the input side worm gear. As a result, a large gear box GB is disposed in the central portion of the hopper H, and there is a problem in that fertilizer application cannot be performed in the central portion of the hopper H.
[0012]
Further, in the conventional fertilizer spreader, since the agitator A is provided on both the left and right sides of the power input means P, the positional relationship between each spray port E and each blade W of the agitator A (hopper) In some cases, the positional relationship in the longitudinal direction of H is different between right and left. Further, the positional relationship in the rotational direction between the spray port E and the blades W may be different on the left and right due to the play of the mounting portion of the agitator A, the shift of the mounting phase, and the like. As a result, there is a problem that a difference occurs in the amount of fertilizer applied on the left and right of the hopper H.
[0013]
Moreover, with the conventional fertilizer spreader, lump is mixed in the fertilizer, the hopper H is not sufficiently cleaned, and the fertilizer absorbs moisture in the air and solidifies. If it does, a lump may be caught in the blade | wing W and an excessive load will be applied to the agitator A, and there existed a possibility that the agitator A, the power input means P, etc. might be damaged.
[0014]
Furthermore, in the conventional fertilizer spreader, when finely adjusting the fertilizer application amount, not only sliding the shutter plate S but also adjusting the engine speed of the tractor to change the speed of the agitator A. It was difficult to accurately control the engine speed, and it was not possible to adjust the spray rate stably.
[0015]
Moreover, the fertilizer spreader described in Patent Document 2 is configured such that the lower part of the hopper H can be opened, and by removing the lower part of the hopper H, an operation of removing the fertilizer remaining in the hopper H or an agitator A The cleaning work can be easily performed. However, this fertilizer spreader has a problem in that it is difficult to clean and maintain the agitator A because the agitator A remains in the hopper H even when the lower part of the hopper H is opened.
[0016]
Then, the objective of this invention is providing the fertilizer spreader which solves the said subject and can disperse | distribute fertilizer equally and equally in the longitudinal direction of a hopper.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a hopper for containing fertilizer therein and spraying fertilizer from the bottom, an agitator provided in the hopper and extending in the longitudinal direction of the hopper, and a drive source provided in the hopper. In the fertilizer spreader comprising power input means for inputting the rotational driving force of the agitator to the agitator, the power input means is connected to the drive source and is substantially orthogonal to the agitator, and an axis of the agitator A drive shaft extending substantially parallel to the input shaft, first transmission means provided at an end of the input shaft for transmitting the rotational drive force of the input shaft to the drive shaft, and transmitting the rotational drive force of the drive shaft to the agitator The hopper body of the hopper is configured by an upper part connected to the tractor via a machine frame, and a lower part attached to the upper part so as to be separable from the input shaft. The drive shaft is pivotally supported on the upper portion of the hopper body, the agitator is pivotally supported on the lower portion of the hopper body, and the second transmission means connects the drive shaft and the agitator to rotate the drive shaft. To the agitator, The drive shaft and agitator can be separated when the lower part is separated from the upper part of the hopper body. It is composed.
[0018]
According to this configuration, since the rotational driving force of the input shaft is not directly input to the agitator, but is input via the driving shaft, a single agitator extending across the entire length of the hopper can be provided. it can. Therefore, the positional relationship between each blade of the agitator and each spray port is equal throughout the entire length of the hopper, and uniform spraying can be performed. In addition, fertilizer can be applied to the center of the hopper.
[0019]
Also, a hopper that accommodates fertilizer inside and spreads fertilizer from the bottom, an agitator provided in the hopper and extending in the longitudinal direction of the hopper, and a rotational driving force of a drive source provided in the hopper are input to the agitator In the fertilizer spreader including the power input means, the power input means includes an input shaft connected to the drive source and substantially orthogonal to the agitator, and a drive shaft extending substantially parallel to the axis of the agitator, A first transmission means provided at an end of the input shaft for transmitting the rotational drive force of the input shaft to the drive shaft; and a second transmission means for transmitting the rotational drive force of the drive shaft to the agitator, The hopper body of the hopper is configured by an upper part connected to the tractor via a machine frame, and a lower part that is detachably attached to the upper part, and the input shaft and the drive shaft are connected to the hopper body. The agitator is pivotally supported between the upper part and the lower part of the hopper main body via a bearing divided vertically, and the second transmission means includes the drive shaft and the agitator. And the rotation of the drive shaft is transmitted to the agitator, The drive shaft and agitator can be separated when the lower part is separated from the upper part of the hopper body. It is composed.
[0020]
The first transmission means may include a bevel gear.
[0021]
When the second transmission means includes a drive gear attached to the drive shaft and a driven gear attached to one end of the agitator and meshed with the drive gear. good.
[0022]
Also, When the drive gear is detachably attached to the drive shaft, and the driven gear is detachably attached to the agitator good.
[0023]
Further, when a predetermined load is applied to the agitator on at least one of the attachment portion between the drive shaft and the drive gear or the attachment portion between the agitator and the driven gear, the drive shaft and the drive gear or the above Safety means for releasing the fixation between the agitator and the driven gear may be provided.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0025]
1 is a perspective view of the fertilizer spreader of the present embodiment as viewed from the front in the traveling direction, FIG. 2 is a front sectional view thereof, FIG. 3 is a side sectional view, FIG. 4 is a partially enlarged front sectional view, and FIG. It is a VV sectional view.
[0026]
The fertilizer spreader 1 of this embodiment is provided in the hopper 2 which extends in the machine width B direction of a tractor (not shown) and accommodates fertilizer inside, and the front board 10b of the hopper 2 as shown in the figure. The machine frame 3 connected to the tractor, the agitator 5 provided rotatably in the hopper 2, and the power input means 6 for inputting the rotational driving force of the tractor engine (drive source) to the agitator 5. Composed.
[0027]
As shown in FIG. 1, the machine frame 3 is provided with a bracket 7 having a pin hole 7a for connecting to a three-point link on the tractor side and a bracket 9 having a lower link pin 9a.
[0028]
The hopper 2 includes a hopper body 10 and a lid 8 attached to the upper portion of the hopper body 10 so as to be openable and closable. A plurality of spraying ports 11 (see FIG. 5) are formed at equal intervals in the longitudinal direction at the bottom of the hopper body 10.
[0029]
As shown in FIG. 2, the agitator 5 is disposed in the lower part of the hopper body 10 (immediately above the spraying port 11) and extends over the entire longitudinal direction of the hopper body 10. Both ends of the agitator 5 are pivotally supported on the side plate 10 a of the hopper body 10 via bearings 12. One end (right end portion in the figure) of the agitator 5 passes through the side plate 10 a and extends to the outside of the hopper body 10. The agitator 5 has a plurality of blades 13 provided at equal intervals in the longitudinal direction, and each blade 13 is arranged in alignment with each spray port 11 of the hopper body 10.
[0030]
The power input means 6 is connected to the engine (drive source) of the tractor, and is provided at an input shaft 15 (see FIG. 1 or 3) substantially orthogonal to the agitator 5 and a rear end portion of the input shaft 15. First transmission means 17 that transmits the rotational driving force of the input shaft 15 to the driving shaft 16 that extends substantially parallel to the agitator 5 (that is, substantially orthogonal to the input shaft 15), and the rotational driving force of the driving shaft 16. 2nd transmission means 19 which transmits to.
[0031]
The first transmission means 17 is connected to a drive side bevel gear 20 (see FIG. 3) provided at the rear end of the input shaft 15, a driven side bevel gear 21 that meshes with the drive side bevel gear 20, and the driven side bevel gear 21. Output shaft 22. The driving side bevel gear 20 and the driven side bevel gear 21 are accommodated in a gear box 23 in the hopper body 10. Further, the end of the output shaft 22 is connected to the drive shaft 16 via the adapter 25.
[0032]
By this first transmission means 17, the rotational driving force of the input shaft 15 is input to the driving shaft 16 that is substantially orthogonal thereto. In the present embodiment, the driven-side bevel gear 21 has a larger number of teeth than the drive-side bevel gear 20, and the rotation of the input shaft 15 is decelerated at a predetermined reduction ratio and input to the drive shaft 16. However, in the fertilizer spreader 1 of this embodiment, the rotation speed of the input shaft 15 is reduced mainly by the second transmission means 19. Accordingly, the first transmission means 17 does not need to perform a large deceleration. Speaking extremely, the first transmission means 17 does not have to decelerate at all. Accordingly, the driven bevel gear 21 and the gear box 23 that accommodates it can be relatively small.
[0033]
The first transmission means 17 and the drive shaft 16 are disposed on the agitator 5. The end of the drive shaft 16 extends through the side plate 10 a to the outside of the hopper body 10, and is pivotally supported on the side plate 10 a via a bearing 26.
[0034]
As shown in FIG. 4, the second transmission means 19 includes a drive gear 27 detachably attached to the end of the drive shaft 16 outside the hopper body 10, and an end of the agitator 5 outside the hopper body 10. A driven gear 29 that is detachably attached and meshes with the drive gear 27 is provided. The driven gear 29 has a larger number of teeth than the drive gear 27, and the rotation of the drive shaft 16 is decelerated at a predetermined reduction ratio and transmitted to the agitator 5. As described above, since the rotation of the input shaft 15 is mainly reduced by the second transmission means 19, the reduction ratio between the driven gear 29 and the drive gear 27 is relatively large. However, since the driven gear 29 and the drive gear 27 are provided outside the hopper body 10, they do not hinder fertilizer application. That is, since the fertilizer spreader 1 of this embodiment decelerates the rotational driving force of the engine of the tractor outside the hopper body 10, it is not necessary to provide a large speed reduction means (gear) in the hopper body 10.
[0035]
Splines are formed on the inner surface of the drive gear 27, and splines having the same pitch are also formed on the outer periphery of the end portion of the drive shaft 16. The drive gear 27 is fitted to the drive shaft 16, and movement in the axial direction is restricted by the stopper 30. The drive gear 27 can be removed from the drive shaft 16 by removing the stopper 30 from the drive shaft 16.
[0036]
The inner surface of the driven gear 29 is smooth and is fitted to the outer periphery of the agitator 5 so as to be relatively rotatable. A spline is formed on the outer periphery of the end portion of the agitator 5. A shear bolt holder 31 having a spline with the same pitch formed on the inner surface is fitted from the outside of the driven gear 29, and the stopper 32 moves in the axial direction. Be regulated. Then, the shear bolt holder 31 and the driven gear 29 are integrally fixed by the shear bolt 33 so that the driven gear 29 is attached to the agitator 5 so as not to rotate. The driven gear 29 can be removed from the agitator 5 by removing the stopper 32 and the shear bolt 33.
[0037]
The shear bolt 33 is cut when a predetermined load is applied, and as a safety means for preventing the agitator 5 and the first transmission means 17 from being damaged when an excessive load is applied to the agitator 5. It also has a function. That is, if a lump or the like mixed in the fertilizer is caught by the blade 13 of the agitator 5 and an excessive load is applied to the agitator 5, the load is transmitted to the shear bolt 33 and the shear bolt 33 is cut. As a result, the driven gear 29 and the agitator 5 can rotate relative to each other, and the load can be released. Therefore, the agitator 5, the first transmission means 17, etc. are not damaged. Needless to say, the safety means may be provided at an attachment portion between the drive shaft 16 and the drive gear 27.
[0038]
Further, since the drive gear 27 and the driven gear 29 constituting the second transmission means 19 are detachable from the drive shaft 16 and the agitator 5, respectively, the drive gear 27 and the driven gear 29 are connected to each other with a gear ratio (gear ratio). ), The reduction ratio, that is, the rotational speed of the agitator 5 can be easily changed. Therefore, stable adjustment of the fertilizer application amount can be performed.
[0039]
Thus, the fertilizer spreader 1 of this embodiment does not directly input the rotational driving force of the input shaft 15 to the agitator 5, but via the first transmission means 17, the drive shaft 16, and the second transmission means 19. In order to input, a single agitator 5 extending over the entire length of the hopper body 10 can be provided. Therefore, the positional relationship between each blade 13 of the agitator 5 and each spray port 11 of the hopper body 10 (the positional relationship in the longitudinal direction of the hopper body 10 and the positional relationship in the rotational direction of the agitator 5) is equal at all positions. The amount of fertilizer sprayed from the spray port 11 becomes substantially uniform. Further, fertilizer can be applied to the central portion of the hopper body 10.
[0040]
Next, the fertilizer spreader 1 of this embodiment is provided with a spraying amount adjusting means for adjusting the fertilizer spraying amount by changing the opening area of each spraying port 11 of the hopper body 10, and hereinafter, FIG. 3 and FIG. 5 are used to explain the application amount adjusting means. In this description, when “right” or “left” is described, it indicates right and left in a state in which the tractor travel direction D is faced.
[0041]
As shown in FIG. 1, a cross beam 35 is stretched over the machine frame 3, and support shafts 36 are provided on both sides of the cross beam 35 (only one support shaft is shown in the figure). A right opening / closing lever 37 and a left opening / closing lever 39 are rotatably provided on both the support shafts 36, respectively. Connection pipes 40 are respectively attached to the upper ends of the right and left opening / closing levers 37 and 39, and an operation bar 41 is detachably attached to either one of the upper ends of the connection pipes 40. Further, rod ends 42 are attached to the lower ends of the right and left opening / closing levers 37 and 39, respectively.
[0042]
On the other hand, as shown in FIGS. 3 and 5, a shutter plate 43 for changing the opening area of the spray port 11 is provided below the hopper body 10 so as to be slidable in the longitudinal direction of the hopper body 10. The shutter plate 43 includes a right shutter plate 43a disposed on the right side and a left shutter plate 43b disposed on the left side with respect to the longitudinal center C of the hopper body 10 (see FIG. 5). Both the shutter plates 43a and 43b are arranged at equal intervals in the longitudinal direction, and are provided with a plurality of holes 45 respectively corresponding to the spraying ports 11 of the hopper body 10, and the shutter plates 43a and 43b slide to the left and right. By moving, the overlapping area of each hole 45 and the spout 11 changes, and the opening area of the spout 11 is adjusted. Shutter pins 46 extending downward are welded to the end portions of the shutter plates 43a and 43b on the center portion C side, and as shown in FIG. Each of the arms 47 extending to is attached.
[0043]
As shown in FIG. 1, rod ends 49 are attached to the front ends of both arms 47, and the rod ends 49 are attached to the rod ends 42 attached to the lower ends of the right and left opening / closing levers 37 and 39, respectively. They are connected via a link bar 50. With this configuration, when the right opening / closing lever 37 is rotated, the right shutter plate 43a slides (slides) left and right, and when the left opening / closing lever 39 is rotated, the left shutter plate 43b slides left and right.
[0044]
A slider 51 composed of two superposed resin plates is attached to the front plate 10 b of the hopper main body 10 at two locations, and a single lever 52 slides between the resin plates of both the sliders 51, 51. Insert freely. The lever 52 extends through a bracket 53 attached to the front plate 10b, and a folded portion 52a is formed at an end thereof. A hole is formed in the folded portion 52a, and a screw shaft 56 attached to the bracket 53 and the bracket 55 attached to the front plate 10b is inserted into the hole of the folded portion 52a. A stopper 57 and a lock nut 59 are screwed into a portion of the screw shaft 56 that extends between the folded portion 52 a and the bracket 55. By rotating the stopper 57, the stopper 57 moves along the screw shaft 56, and the position of the stopper 57 can be fixed by the lock nut 59. The stopper 57 and the bracket 53 restrict the movement range of the lever 52. As will be described later, since the lever 52 is connected to the right opening / closing lever 37 and / or the left opening / closing lever 39, the stopper 57 and the bracket 53 restrict the rotation range of the right opening / closing lever 37 and / or the left opening / closing lever 39. . That is, the stopper 57 and the bracket 53 regulate the opening area of the spraying port 11, that is, the adjustment range of the fertilizer spraying amount. The front plate 10b is provided with a scale 60 indicating the fertilizer application amount with respect to the position of the stopper 57. The operator adjusts the position of the stopper 57 while viewing the scale 60, so that the adjustment range of the fertilizer application amount can be adjusted. Easy to set.
[0045]
The lever 52 can be integrated with the right opening / closing lever 37 and / or the left opening / closing lever 39 by locking means. The locking means includes a lever 52, a lock plate 61 having a pin inserted into a hole (not shown) formed in the right opening / closing lever 37 or the left opening / closing lever 39, and fixing the locking plate 61 to the lever 52. And a locking bolt 62. By inserting the pin of the lock plate 61 into the hole of the lever 52 and the right opening / closing lever 37 or the left opening / closing lever 39 and integrating the lock plate 61 and the lever 52 with the lock bolt 62, the right opening / closing lever 37 or the left The open / close lever 39 is connected to the lever 52.
[0046]
FIG. 1 shows a state in which both the right opening / closing lever 37 and the left opening / closing lever 39 are connected to the lever 52. In this case, if either the right opening / closing lever 37 or the left opening / closing lever 39 is operated, The left shutter plates 43a and 43b slide. Since the lever 52 slides as the right and left opening / closing levers 37 and 39 rotate, the rotation range of the right and left opening / closing levers 37 and 39 is restricted by the bracket 53 and the stopper 57. That is, from the state shown in FIG. 1, when the right opening / closing lever 37 is rotated to the left by holding the operation lever 41, the lever 52 moves to the left. The position where the folded portion 52a contacts the stopper 57 is the left rotation limit. Similarly, the position at which the folded portion 52a contacts the bracket 53 is the right rotation limit.
[0047]
It is also possible to connect the lever 52 and one of the right and left open / close levers 37 and 39 so that only one of the shutter plates 43a and 43b slides. In this case, only the right or left application amount is adjusted with respect to the central portion C of the hopper body 10. For example, from the state shown in FIG. 1, the lock plate 61 connecting the left opening / closing lever 39 and the lever 52 is removed together with the lock bolt 62, and formed below the hole that is assembled with the lever 52 of the left opening / closing lever 39. The pin of the lock plate 61 is inserted into the hole 63 formed. Then, the lock plate 61 and the bracket 65 fixed to the machine casing 3 side are fixed by the lock bolt 62. Thereby, the left opening / closing lever 39 cannot be rotated. In this state, when the operation lever 41 is rotated, only the right shutter plate 43a slides.
[0048]
Conversely, when only the left opening / closing lever 39 is to be rotated, the right opening / closing lever 37 is fixed to the bracket 66 and the operation lever 41 is replaced with the upper end of the left opening / closing lever 39.
[0049]
The fertilizer spreader 1 of the present embodiment is further configured so that the hopper body 10 is divided into an upper part and a lower part (bottom part), and the lower part can be separated from the upper part, which will be described below. .
[0050]
As shown in FIG. 3, the hopper body 10 includes an upper portion 67 on which the input shaft 15 and the drive shaft 16 are supported, and a lower portion 69 attached to the lower side of the upper portion 67 and on which the agitator 5 is supported. The lower portion 69 has a substantially halved cylindrical shape, and flanges 70a and 70b are formed on both upper sides thereof. One flange 70a is attached to the upper part 67 via a hinge 71, and the other flange 70b is detachably engaged with the upper part 67 by a normal engagement means (not shown) such as a hook.
[0051]
By engaging the flange 70 b with the upper portion 67, the lower portion 69 and the agitator 5 can be fixed to the upper portion 67. A packing 72 is interposed at the joint between the upper part 67 and the lower part 69 to seal the joint. On the other hand, when the engagement of the flange 70b with respect to the upper portion 67 is released, the lower portion 69 can be rotated downward about the hinge 71, thereby exposing the inner surface of the lower portion 69 and the agitator 5. Thus, in the fertilizer spreader 1 of this embodiment, since not only the lower part 69 but the agitator 5 can be exposed separately from the upper part 67, the removal work of the fertilizer remaining in the hopper main body 10, Cleaning and maintenance of the agitator 5 can be performed easily and safely.
[0052]
Here, as shown in FIG. 6, a bearing 73 that supports the agitator 5 is divided into an upper bearing 73a and a lower bearing 73b, and the upper bearing 73a is formed at the upper portion 67 and the lower bearing 73b is disposed at the lower portion. You may make it attach to 69. In this way, as shown in FIG. 7, when the engagement with the upper portion 67 of the flange 70b is released and the lower portion 69 is rotated downward, the upper bearing 73a and the lower bearing 73b are separated from each other. 5 and the driven gear 29 attached thereto, the shear bolt holder 31, the shear bolt 33, etc. (see FIG. 4) can be removed from the lower portion 69. Therefore, cleaning and maintenance of these members can be performed more easily.
[0053]
An example of the engaging means for engaging the flange 70b with the upper portion 67 will be described with reference to FIGS.
[0054]
As shown in the figure, a U-shaped lever 75 is provided on the rear plate 10 c of the hopper body 10 so as to be rotatable around a pin 77 via a bracket 76. A horizontal beam 80 is provided around the pin 81 so as to be rotatable around an intermediate portion of the arm 79 on both sides of the lever 75. A first boss 82 extending downward is provided at a substantially central portion of the horizontal rail 80. A screw hole is formed in the first boss 82, and the first screw shaft 83 is screwed into the screw hole. A bracket 85 is provided on the upper portion of the rear plate 10 c of the hopper body 10, and the lever 75 is inserted into a hole formed in the bracket 85 and a hole formed in the arm 79 of the lever 75, thereby Can be held in a position that is most upwardly rotated. In the figure, reference numeral 87 denotes a pin for preventing the lot 86 from coming off.
[0055]
On the other hand, as shown in FIG. 9, an angle 89 is attached to the flange 70 b of the lower portion 69, and a stay 91 is rotatably attached to the angle 89 via a pin 90. The stay 91 is provided with a second boss 92 having a screw hole, and the second screw shaft 93 is screwed into the second boss 92. The first screw shaft 83 and the second screw shaft 93 are threaded in directions opposite to each other, and they are screwed into the end portions of the adjusting nuts 95 and connected to each other. By rotating the adjustment nut 95, the lengths of the first and second screw shafts 83, 93 extending between the first boss portion 82, the adjustment nut 95, the second boss portion 92, and the adjustment nut 95 can be changed. .
[0056]
When the lower portion 69 is fixed to the upper portion 67 by the engaging means, the lever 75 is rotated upward as shown in FIG. And it fixes with respect to the backplate 10c with the lot 86 in the position rotated to the uppermost part. Thereby, the lower portion 69 is not separated from the upper portion 67. Further, at this time, the tightening force between the lower portion 69 and the upper portion 67 can be adjusted by rotating the adjustment nut 95 to change the extension lengths of the first screw shaft 83 and the second screw shaft 93.
[0057]
When the lower portion 69 is separated from the upper portion 67, the lot 86 is removed from the arm 79 of the lever 75, the fixation of the lever 75 is released, and the lever 75 is rotated downward. Then, as shown in FIG. 10, the lower portion 69 pivots downward about the hinge 71, and the inside of the lower portion 69, the agitator 5 and the like are exposed.
[0058]
Further, as shown in FIGS. 11 to 13, guides 97 each having a long hole 96 extending in the vertical direction are attached to both side portions (both ends in the front-rear direction of the drawing) of the upper portion 67, and both ends of the agitator 5 are attached. May be inserted and disposed in the elongated hole 96 of the guide 97, and the lower portion 69 may be completely separated (removed) from the upper portion 67.
[0059]
In this embodiment, after the lower portion 69 is removed from the upper portion 67, the lower portion 69 and the agitator 5 pivotally supported on the lower portion 69 can be lowered along the elongated hole 96. When the agitator 5 moves to the lower end of the long hole 96, the lower portion 69 and the agitator 5 are supported by the guide 97. In this state, as shown in FIG. 13, if the lower portion 69 is rotated by 180 °, the inner surface of the lower portion 69 and the agitator 5 can be opened upside down, and cleaning and maintenance can be performed more easily.
[0060]
【The invention's effect】
In short, according to the present invention, excellent effects are exhibited as described below.
1) Fertilizer can be sprayed at the center of the hopper.
2) It is possible to spray fertilizer at equal intervals and equal amount.
[Brief description of the drawings]
FIG. 1 is a perspective view of a fertilizer spreader according to an embodiment of the present invention as viewed from the front in a traveling direction.
FIG. 2 is a front sectional view of the fertilizer spreader of FIG.
FIG. 3 is a side cross-sectional view of the fertilizer spreader of FIG.
FIG. 4 is a partially enlarged view of FIG. 2;
5 is a cross-sectional view taken along line VV in FIG.
FIG. 6 is a side cross-sectional view of a fertilizer spreader according to another embodiment of the present invention, showing a state where the lower part of the hopper body is fixed to the upper part.
7 is a side cross-sectional view showing a state in which the lower part of the hopper body is separated from the upper part in the fertilizer spreader of FIG. 6. FIG.
FIG. 8 is a perspective view of the fertilizer spreader as seen from the rear in the traveling direction, showing an example of the engaging means.
9 is a side view showing the engaging means of FIG. 8, showing a state in which the lower part of the hopper body is fixed to the upper part. FIG.
10 is a side view showing the engaging means of FIG. 8, showing a state in which the lower part of the hopper body is separated from the upper part. FIG.
FIG. 11 is a side cross-sectional view of a fertilizer spreader according to another embodiment of the present invention, showing a state where the lower part of the hopper body is fixed to the upper part.
12 is a side cross-sectional view showing a state in which the lower part of the hopper body is separated from the upper part in the fertilizer spreader of FIG. 11. FIG.
13 is a side cross-sectional view showing a state in which the lower part spaced apart from the upper part is rotated by 180 ° in the fertilizer spreader of FIG. 11. FIG.
FIG. 14 is a perspective view of a conventional fertilizer spreader as viewed from the front in the traveling direction.
FIG. 15 is a plan sectional view of a conventional fertilizer walker.
[Explanation of symbols]
1 Fertilizer spreader
2 Hoppers
5 Agitator
6 Power input means
15 Input shaft
16 Drive shaft
17 First transmission means
19 Second transmission means
27 Drive gear
29 Driven gear
67 Top
69 Bottom

Claims (6)

A hopper that contains fertilizer inside and spreads the fertilizer from the bottom, an agitator that is provided in the hopper and extends in the longitudinal direction of the hopper, and a power that is provided in the hopper and that inputs the rotational driving force of the drive source to the agitator In the fertilizer spreader with input means,
The power input means is connected to the drive source and is substantially orthogonal to the agitator, a drive shaft extending substantially parallel to the axis of the agitator, and rotation of the input shaft provided at an end of the input shaft First transmission means for transmitting a driving force to the drive shaft, and second transmission means for transmitting a rotational driving force of the drive shaft to the agitator,
The hopper body of the hopper includes an upper part connected to the tractor via a machine frame, and a lower part that is detachably attached to the upper part, and the input shaft and the drive shaft are upper parts of the hopper body. The agitator is pivotally supported at the lower portion of the hopper body, and the second transmission means connects the drive shaft and the agitator to transmit the rotation of the drive shaft to the agitator . A fertilizer spreader configured so that the drive shaft and the agitator can be separated when the lower part is separated from the upper part . A hopper that contains fertilizer inside and spreads the fertilizer from the bottom, an agitator that is provided in the hopper and extends in the longitudinal direction of the hopper, and a power that is provided in the hopper and that inputs the rotational driving force of the drive source to the agitator In the fertilizer spreader with input means,
The power input means is connected to the drive source and is substantially orthogonal to the agitator, a drive shaft extending substantially parallel to the axis of the agitator, and rotation of the input shaft provided at an end of the input shaft First transmission means for transmitting a driving force to the drive shaft, and second transmission means for transmitting a rotational driving force of the drive shaft to the agitator,
The hopper body of the hopper includes an upper part connected to the tractor via a machine frame, and a lower part that is detachably attached to the upper part, and the input shaft and the drive shaft are upper parts of the hopper body. The agitator is pivotally supported between an upper part and a lower part of the hopper body via a bearing divided vertically, and the second transmission means includes the drive shaft and the agitator. And a fertilizer spreader configured to transmit the rotation of the drive shaft to the agitator and to separate the drive shaft and the agitator when the lower portion is separated from the upper portion of the hopper body .   The fertilizer spreader according to claim 1 or 2, wherein the first transmission means includes a bevel gear.   The fertilizer application according to any one of claims 1 to 3, wherein the second transmission means includes a drive gear attached to the drive shaft and a driven gear attached to one end of the agitator and meshed with the drive gear. Machine.   The fertilizer spreader according to claim 4, wherein the drive gear is detachably attached to the drive shaft, and the driven gear is detachably attached to the agitator.   When a predetermined load is applied to the agitator on at least one of the attachment portion of the drive shaft and the drive gear or the attachment portion of the agitator and the driven gear, the drive shaft and the drive gear or the agitator The fertilizer spreader according to claim 5, further comprising safety means for releasing the fixation with the driven gear.

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