JP3372738B2 - Mounting structure of fertilizer tank on mobile agricultural machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer tank mounting structure for a mobile agricultural machine such as a rice transplanter equipped with a fertilizer application mechanism.

[0002]

2. Description of the Related Art Conventionally, it is known that passenger rice transplanters equipped with fertilizer tanks have fertilizer tanks mounted and supported on both left and right sides of the driver's seat. In particular, there are two types of fertilizers, deep fertilizer and shallow fertilizer. For fertilizer application, either one (usually for deep layers) was installed on both sides of the driver's seat.

[0003]

Generally, when the fertilizer tanks are attached to both sides of the driver's seat, the fertilizer tanks should not come into contact with the seedling stand of the planting machine or interfere with the seedling supply. The fertilizer tank is installed in front of the planting machine (seedling table). For this reason, the space on the side of the driver's seat is reduced by the fertilizer tank, which not only prevents the operator from getting in and out of the driver's seat, but also when the auxiliary seedling stand is installed on both sides of the bonnet. There is a drawback that it hinders the work of taking out the auxiliary seedlings from the seedling stand.

[0004]

The mounting structure of the fertilizer tank in the mobile agricultural machine of the present invention for solving the above problems is such that the working machine 11 is connected to the rear of the traveling machine body 1 having the driver's seat 8, The working machine 11 side is provided with a fertilizer application section 28 for fertilizing the fertilizer in the fertilizer tank 31 provided on the traveling machine body 1 side,
In the mobile agricultural machine in which the passage 23 from the driver's seat 8 to the working machine 11 side is provided on the side of the driver's seat 8 on the traveling machine body 1 side, above the passage 23, the fertilizer tank 31 is sandwiched across the passage 23.
Is rotatably attached to the left and right, and a rotation fulcrum 47 is located at a rear position of the fertilizer tank 31 with the passage 23 sandwiched between the seats of the driver's seat 8.
It is provided behind the seat 7, and when the fertilizer tank 31 is rotated inward, the outer surface of the fertilizer tank 31 is the maximum lateral side of the traveling body 1.
The storage posture A is set substantially along the outside of the traveling machine body 1 without protruding outside the width L , and the outside direction in front of the fertilizer tank 31 is set.
At the time of rotation, the outer surface of the fertilizer tank 31 is above the traveling body 1.
For getting on and off to the side of the seat 7, protruding outside the maximum width L
Fertilizer ta
The first feature is that the rotation limit position of the link 31 is restricted.

Further, the rotation fulcrum 47 of the fertilizer tank 31 is provided in front of the front end of the working machine 11 in plan view, and the rotation range is restricted to the range in which the rear portion of the fertilizer tank 31 does not project to the rear of the rotation fulcrum 47. The second characteristic is that this is done.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. 1 and 2 are a plan view and a left side view of a riding rice transplanter to which the present invention is applied. The traveling machine body 1 is configured on a machine body frame 4 supported by front wheels 2 and rear wheels 3. The traveling machine body 1 has an engine (not shown) installed inside a hood 6 at the front, and A driver's seat 8 including a seat 7 and the like is arranged behind the engine. In the rear of the driver's seat 8, a planting machine 11 in which a seedling stand 9 is installed obliquely can be raised and lowered via an upper link 12 and an elevating link 14 composed of left and right lower links 13a, 13b, and rolling. Connected as possible.

The driver's seat 8 is provided with an operation panel 17 provided with a handle 16 and the like in front of the seat 7, and a center step 18 is fixed between the operation panel 17 and the seat 7 on the side of the body frame 4. Is provided. On the left and right sides of the center step 18 and the seat 7, side steps 19 are provided from approximately the front end of the center step 18 to approximately the center position in the front-rear direction of the seat 7, and from the rear end of the side step 19 to the rear of the seat 7. The rear steps 21 are fixedly provided on the body frame 4 side. Further, on the outer side of the left and right rear steps 21, an expansion step 22 is provided so as to project outward from the side step 19 in a plan view, and a rear center step 20 is provided between the left and right rear steps 21. .

At this time, the upper surfaces of the center step 18 and the side step 19 are substantially flush with each other, but the upper surface of the portion of the rear step 21 located behind the seat 7 is the upper surface of the side step 19 (center step 18). The step portion 21a is formed in parallel with the step portion 21a, and the front portion of the step portion 21a in the rear step 21 is inclined to connect the step portion 21a and the side step 19. In addition, the upper surface of the rear center step 20 is the step 2
It is on the same plane as 1a.

By the above steps, the passage 23 from the driver's seat 8 to the planting machine 11 side is formed so as to surround the seat 7 from both sides to the rear. The center step 18, the side stop 19, the rear step 21, and the rear center step 20 also serve as a machine body cover for covering the traveling machine body 1. In other words, the above steps are formed on the machine body cover. In particular, the rear step 21 also serves as a fender for the rear wheel 3, and has the above-described shape in which the rear is raised.

Next, the structure of the planting machine 11 will be described.
The planting machine 11 has the same structure as that attached to the conventional riding rice transplanter, and in the working state in which the lifting link 14 is lowered,
It is grounded and supported by the float 24 in the field, and the planting section 2
6 performs planting work, and fertilizer in a fertilizer tank (both to be described later) is fertilized by a fertilizer nozzle (fertilizer portion) projecting from the lower surface of the float 24 that is inserted into the farm field when the float 24 touches the farm field. It is a thing.

At this time, the planting machine 11 can adjust the planting depth and the fertilization depth by moving the float 24 up and down as in the conventional case. In this embodiment, the fertilizer application nozzle is composed of a shallow-layer fertilizer application nozzle 27 that applies fertilizer to a relatively shallow field and a deep-layer fertilizer application nozzle 28 that applies fertilizer to a relatively deep field. , A shallow-layer fertilizing nozzle 27 on each float 24 provided with two planting parts 26,
Each deep-layer fertilizing nozzle 28 is provided.

On the other hand, the fertilizer tank also comprises a front fertilizer tank 29 for supplying fertilizer to the shallow layer fertilizer nozzle 27 side and a rear fertilizer tank 31 for supplying fertilizer to the deep layer fertilizer nozzle 28 side. 29 is provided on the left and right below the hood 6, and the rear fertilizer tank 31 is provided on the left and right sides of the seat 7. Further, the seedling placing table 9 in the planting machine 11 of the present embodiment has a lateral width L of the traveling machine body 1.
It has a lateral width L'that exceeds (the distance between the outer surfaces of the left and right expansion steps 22 as described later), and the upper end side extends to the driver seat 8 side. The seedling placing table 9 is a type in which both ends cannot be folded, and the planting machine 11
Is the traveling machine body 1 (elevation link 14) when the passenger rice transplanter is transported
It is removed from and is transported by a trailer. That is, the traveling machine body 1 is transported by itself.

On the left and right sides of the hood 6, there are provided a plurality of stages of auxiliary seedling mounts 33 supported by stays 32 standing from the body frame 4 side, and at least one of the auxiliary seedling mounts 33 is provided. A seedling taking-out plate 34 for taking out the auxiliary seedlings from the auxiliary seedling placing table 33 is placed. At this time, the outer side surfaces of the left and right auxiliary seedling stand 33 are located inside the outer side surface of the expansion step 22.

Next, the structure of the deep-layer fertilizing mechanism including the deep-layer fertilizing nozzle 28 and the rear fertilizing tank 31 will be described. The deep fertilization mechanism is the same as the rear fertilizer tank 3 described above.
1 and fertilizer (paste fertilizer) in the rear fertilizer tank 31
A deep-layer fertilizing nozzle 28 that discharges from the tip, and a pump 36 that is provided between the deep-layer fertilizing nozzle 28 and the rear fertilizing tank 31 and that sends the paste fertilizer from the rear fertilizing tank 31 to the deep-layer fertilizing nozzle 28 side. , The pump 36
And a deep-layer fertilizing nozzle 28 are provided between the fertilizer nozzle 28 for deep layer, and whether to feed or stop the fertilizing nozzle for deep layer is selected. Piping (connection) with the rear suction hose 38, the input fertilizing pipe 39a, the output fertilizing pipe 39b, etc., respectively.
Has been done.

As shown in FIGS. 1 and 2, the rear fertilizer tank 31 has the passage 23 sandwiched between the left and right sides of the seat 7,
A portion that is supported and provided on the traveling machine body 1 side via a stay 41 attached to the machine body frame 4 side, and extends from the rear side of the side step 19 in the above-described passage 23 to the front side of the step portion 21a of the rear step 21. It is located above. In other words, the rear fertilizer tank 31 is the side step 19
Is located above the side of the seat 7 and above the height changing portion of the passage 23 between the front of the seat 7 and the rear of the seat 7. Further, the rear fertilizer tank 31 has a shape in which a horizontal width (overall width) is shorter than a vertical length (overall length) in a plan view, and the rear fertilizer tank 31 is attached to the traveling machine body 1 in the front-back direction. At this time, the entire width is shorter than the width of the passage 23.

The stay 41 is attached to the machine frame 4 side so that the stay 41 can swing left and right, and thereby the rear fertilizer tank 31 is supported by the traveling machine body 1 so as to swing left and right. At this time, the rear fertilizer tank 31 does not come into contact with the seedling placing table 9 in the entire range of the raising and lowering of the planting machine 11, does not interfere with the seedling supplying to the seedling placing table 9, and will be described later even when swinging to the left and right. As described above, the above condition with the seedling placing table 9 is maintained within the swing range.

Next, the structure of the stay 41 will be described. As shown in FIGS. 1 to 3, the stay 41 includes a holding stay 42 that holds the rear fertilizer tank 31 and has a substantially U-shaped upper opening in a side view, and a mounting member 43 that is fixed to the machine frame 4 side. , And a support arm 44 rotatably supported on the mounting member 43. The mounting member 43 is fan-shaped with the front surface 43a having an arc shape in a plan view, and has a U-shaped cross section with an open bottom. Further, an upper portion of the front surface 43a is opened, and a support arm 44 rotatably attached to the attachment member 43 via a shaft 47 at the rear end side projects from the opening portion 46. As a result, the support arm 44 can swing left and right within the opening range of the opening portion 46 in the left-right direction.

At this time, a bracket 48 having a U-shaped cross section is fixed in the front-rear direction below the portion of the support arm 44 projecting from the mounting member 43.
A substantially L-shaped rod 49 in a side view is inserted into this so as to be slidable back and forth. The rod 49 has a front end and L
A rear end curved in a letter shape projects from the front and rear ends of the bracket 48, and a spring 51 is externally fitted to the rod 49 in the bracket 48, and the rod 51 is moved to the mounting member 43 side by the spring 51. Being energized.

On the other hand, at the lower portion of the front surface 43a of the mounting member 43, the front end side of the rod 49 can be fitted at a predetermined interval into a portion corresponding to the locus of the tip of the rod 49 when the support arm 44 is swung. A plurality of holes 52 are provided, and the rod 49 is inserted into the positioning hole 52 by the urging force of the spring 51, so that the mounting member 4
The position (swing angle) of the support arm 44 with respect to 3 is fixed. Then, the rod 49 is slid backward against the urging force of the spring 51 to be removed from the positioning hole 52, the supporting arm 44 is swung, and then the rod 49 is inserted into another positioning hole 52 to support the supporting arm 44. The angle with respect to the mounting member 43 can be changed.

The lower end of the holding stay 42 is attached to the front end side of the support arm 44 via a bracket 53, and the attaching member 43 is attached to the frame 4a supporting the rear step 21, whereby the stay of the above structure is formed. 41 is attached to the traveling machine body 1 side. At this time, the mounting member 43 is mounted on the frame 4a so as to project to the outside of the rear step 21, but does not project to the outside of the expansion step 22 in plan view.

By attaching the front and rear ends of the rear fertilizer tank 31 to the front and rear ends of the holding stay 42, the stay 41
The rear fertilizer tank 31 is attached to the rear fertilizer tank 31, and the rear fertilizer tank 31 is attached to the traveling machine body 1 side in the front-rear direction as described above. Then, by swinging the support arm 44 left and right with respect to the mounting member 43 as described above, the rear fertilizer tank 3
1 swings left and right with respect to the traveling body 1. In the present embodiment, the rear fertilizer tank 31 has a structure (two positioning holes 52) that can be switched between the storage position A and the working position B shown in FIG. By inserting the rod 49 into any one of the two positioning holes 52, the rear fertilizer tank 31 can be set to either the storage position A or the working position B. That is, the swing range of the rear fertilizer tank 31 is between the storage position A and the working position B.

At this time, the shaft 47, which serves as a fulcrum of rotation of the rear fertilizer tank 31, is located behind the rear fertilizer tank 31 on the outer side of the rear step 21, as shown in FIG. Rear end or holding stay 42
It is close to the rear end in plan view. Further, it is located in front of the front end of the seedling placing table 9 in a plan view. As a result, the assembly of the rear fertilizer tank 31 including the stay 41 has a length in the front-rear direction that is substantially the same as the length of the fertilizer tank 31 only, and thus the rear fertilizer tank 31 can be mounted relatively compactly on the traveling machine body 1.

At the storage position A, the rear fertilizer tank 31
The inner side of the rear fertilizer tank 31 extends along the outer side of the passage 23, and the rear fertilizer tank 31 is positioned so that the outer side of the rear fertilizer tank 31 does not exceed the outer side of the expansion step 21. That is, the space between the outer sides of both expansion steps 22 is the maximum lateral width L of the traveling machine body 1, and the outer side of the rear fertilizer tank 31 does not exceed the lateral width L of the traveling machine body 1 along the outer side of the traveling machine body 1. The above state is obtained by making the width of the rear fertilizer tank 31 smaller than the width of the passage 23.

In the working position B, the rear fertilizer tank 31
The swing of the rear fertilizer tank 31 is regulated (the swing angle is determined) so that the rear portion of the (assembly of the rear fertilizer tank 31) does not project to the rear of the rotation fulcrum shaft 47. Rear fertilizer tank 3 (in position B)
1 does not exceed the lateral width L'of the seedling placing table 9. As a result, when the rear fertilization tank 31 is assembled in the storage position A so that it does not come into contact with the seedling stand 9 or the like when the planting machine 11 moves up and down, the rear fertilization tank 31 is assembled in the working position B as well. It does not come into contact with the mounting table 9 or the like. That is, the rear fertilizer tank 31 does not come into contact with the seedling placing table 9 and the storage position A described above.
In the above, the outer side is along the outer side of the traveling machine body 1, and the swinging range is restricted to a range that satisfies the conditions such as not exceeding the lateral width L ′ of the seedling placing table 9 at the working position B.

As described above, the rear fertilizer tank 31 is always located outside the passage 23, and particularly in the storage position A, the outer side of the rear fertilizer tank 31 is the lateral width L of the traveling machine body 1.
Not only does not exceed the width, but also the lateral width L of the traveling machine body 1 is not widened for the rear fertilizer application tank 31, the space 54 between the seat 7 and the rear fertilizer application tank 31 can be ensured wider than before, and the passage 23 can pass through. Will be easier. Since the swing fulcrum shaft 47 of the rear fertilizer tank 31 is located behind the rear fertilizer tank 31, the rear portion of the rear fertilizer tank 31 does not project into the passage 23 when the rear fertilizer tank 31 swings. The rear fertilizer tank 31 does not obstruct the passage of the passage 23.

That is, the swinging fulcrum shaft 47 has the rear fertilizer tank 3
By being located at the rear end position of 1, it is possible to simultaneously and easily obtain the above effect and the effect of compact mounting.
Further, as described above, the rear portion of the rear fertilizer tank 31 assembly does not project to the rear of the rotation fulcrum shaft 47 when the rear fertilizer tank 31 is in the working position B, so that when the planting machine 9 moves up and down, The platform 9 and the rear fertilizer tank 31 do not come into contact with each other, and the rear fertilizer tank 31 does not hinder the raising and lowering of the planting machine 9.

When the passenger rice transplanter of this embodiment is carried, the planting machine 11 is detached from the traveling machine body 1 and carried as described above, so that the traveling machine body 1 is transported alone. At this time, as the rear fertilizer tank 31 is set to the storage position A as described above, the rear fertilizer tank 31 does not protrude beyond the lateral width L of the traveling machine body 1, so that the traveling machine body 1 can be easily transported. There is a type of planting machine (not shown) that can fold the left and right ends of the seedling placing table inward, and the riding rice transplanter equipped with the planting machine equipped with this seedling placing table is generally Fold the seedling stand to transport the traveling machine and the planting machine together.

The foldable seedling placing table is so constructed that its lateral width when folded is approximately the same as the lateral width of the traveling machine body. Therefore, by setting the rear fertilizer tank at the storage position A so that the rear fertilizer tank 31 does not protrude beyond the lateral width of the traveling machine body 1, the planting machine 11 equipped with the folding seedling placing table is attached. It is possible to easily carry the riding rice transplanter. In addition, this type (folding type) planting machine (seedling table) has little extension to the driver's seat side on the upper end side.

Further, particularly when the rear fertilizer tank 31 is in the storage position A, the rear fertilizer tank 31 is located on the side of the side step 19 and the rear step 21 as described above, so that the rear fertilizer tank 31 is located in the side of the passage 23. It functions as a lateral guard for the step 19 and the rear step 21, so that the operator (operator) does not need to pay particular attention to the ends of the side step 19 and the rear step 21 when moving the passage 23, and the balance can be maintained during the movement. It becomes easy to secure the posture even if the vehicle is collapsed, and the passage 23 can be easily moved. In particular, in this embodiment, as described above, the passage 23 has a step, and the rear fertilizer tank 31 is provided above the step.
Is located, the rear fertilizer tank 31 serves as a guard for the stepped portion of the passage 23. The rear fertilizer tank 31, including the stay 41, also functions as a rail for the passage 23.

By setting the rear fertilizer tank 31 at the working position B, the distance between the auxiliary seedling stand 33 and the front end of the rear fertilizer tank 31 is made larger than when the rear fertilizer tank 31 is at the storage position A. Can be taken. Thus, the work of taking out the auxiliary seedlings from the auxiliary seedling placing table 33 by the seedling taking-out plate 34 can be more easily performed, and the seedling supplying work to the seedling placing table 9 can be smoothly performed. Further, as described above, the distance (space) 56 between the auxiliary seedling stand 33 and the front end of the rear fertilizer tank 31 is widened, so that the operator can easily get on and off the driver's seat 8, each step and the like.

In the working position B, the rear fertilizer tank 3
Since 1 does not exceed the lateral width L'of the seedling placing table 9, even if the rear fertilizer tank 31 is set to the work position B during the planting work, the rear fertilizer tank 31 increases the lateral width of the entire riding rice transplanter. The planting work can be performed in the same manner as in the past. Further, the rear fertilizer tank 31 is not pivotally formed as described above, and the support arm 44 is directly fixed to the machine body frame 4 without the mounting member 43 as shown in FIG. It may be attached non-rotatably.

In this case, the space for supplying seedlings and the space for getting on and off are slightly reduced, but the rear fertilizer tank 3
The same effect as that when 1 is in the storage position A can be obtained. In addition, some riding rice transplanters do not have special steps and have a body cover that serves as the passage 23. In this case as well, the same effects as those described above can be obtained.

Here, the shape of the stay 41 will be described in more detail. Side step 1 as shown in FIG.
9, rear step 21, support arm 44, holding stay 4
In the driver's seat 8 (above the steps), a space 57 having a substantially U shape in a side view is formed by 2. At this time, the front of the holding stay 42 is bent obliquely, and the upper front of the space 57 is wide. With this structure, the operator can effectively use the front of the space 57.

Further, the rear part of the holding stay 42 is also bent obliquely, so that even if the rear fertilizer tank 31 (holding stay 42) and the rear step 21 overlap in a plan view, as shown in FIG. Worker is rear step 2
1 (step 21a) can be used on the entire surface, and step 21
In a, the workability can be maintained almost the same as that of the model without the rear fertilizer tank 31.

Next, the pump 36 and the rear suction hose 38, which constitute the deep-layer fertilizer application mechanism, will be described.
As shown in FIGS. 1 and 2, the pump 36 is provided behind the rear step 19 and the rear side step 20, and is connected to the left and right rear fertilizer tanks 31 and the rear suction hose 38. That is, the structure is such that the paste fertilizer in the rear fertilizer tank 31 is sent to the pump 36 through the rear suction hose 38, and the rear suction hose 38 applies the paste fertilizer in the rear fertilizer tank 31 to the fertilizer application section (the deep layer fertilizer nozzle). It is a fertilizer hose that is fed to the 28) side.

The pump 36 is composed of a plurality of single pumps having a common input as a unit. For example, in this embodiment, the pump 36 is composed of the same number of single pumps as the deep-layer fertilizing nozzles 28. . At this time, the rear suction hose 38 is located laterally and rearward of the rear step 19,
It is connected to the pump 36 through the rear of the rear side step 20, and the upper surface of the rear suction hose 38 projects from the upper surface of the rear step 19. That is, the rear suction hose 38 is provided along the outer peripheral upper surface of the passage 23 on the side and the rear of the seat 7. Further, the rear suction hoses 38 are stably attached to the left and right rear steps 21 and the rear center steps 20 via the attachment portions 25 (so as not to form spatial piping).

Due to the above piping structure of the rear suction hose 38, the rear suction hose 38 has a function as a hose for sending the paste fertilizer to the pump 36, and the passage 2
3 also functions as a guard for the outer circumference, and by forming the surface with a material having a non-slip effect such as resin or rubber, it also functions as a stopper for the non-slip on the outer circumference of the passage 23 (rear step 19).

By the action of the rear suction hose 38 as described above, the worker can move smoothly especially on the passage 23 on the rear step 19 side, so that the workability is also improved as compared with the conventional case. As described above, since the side of the side step 19 is guarded by the rear fertilizer tank 31, the stay 41, etc., the passage 23 is entirely guarded, and the worker is almost entirely in the passage 23.
You can move smoothly without paying special attention to the outer edge of the.

On the other hand, the rear suction hose 38 is provided with the passage 23.
Since it is stably attached along the outer peripheral edge (rear step 21 and rear center step 20), the conventional spatial piping is not provided, and the rear suction hose 38 is used for other mechanisms and maintenance. Not only does it not hinder, but it does not sway due to vibration or the like due to traveling of the traveling machine body 1 and adversely affect other mechanisms. Further, since the rear suction hose 38 does not project into the passage 23, the operator can use the entire passage 23 (side step 19, rear step 21 and rear center step 20), and workability at each step is improved. Is improved.

Further, since the rear fertilizer tank 31 has its swinging range restricted to the range in which the rear portion of the rear fertilizer tank 31 assembly does not project rearward from the rotation fulcrum shaft 47, the rear suction hose 38 is provided. The portion located near the side of the rear step 19 does not curve extremely even when the rear fertilizer tank 31 swings. That is, when the rear fertilizer tank 31 is in the storage position A, the passage 2
3 (rear step 21 and rear center step 20)
The rear suction hose 38, which curves smoothly along and connects the rear fertilizer tank 31 and the pump 36, does not move from the rear fertilizer tank 31 to the rear step 21 even when the rear fertilizer tank 31 is swung to the working position B. It keeps a smooth state almost straight up to.

Therefore, the movement of the rear suction hose 38 accompanying the swing of the rear fertilizer tank 31 is smooth, and the rear suction hose 38 does not hinder the swing of the rear fertilizer tank 31. Furthermore, the pump 36 is the rear step 19
And the rear suction hose 38 passes behind the rear step 19, the entire stepped portion 21a of the rear step 19 can be used, and the operator can operate the rear step 19a on the rear step 19. Workability is improved.

Next, the indicator 37 will be described. The indicator 37 is attached to the lower link 13b on the right side as shown in FIG. 1, and the input side is connected to the pump 36 by the input fertilizing pipe 39a, and the output side is connected to the deep-layer fertilizing nozzle 28 by the output fertilizing pipe 39b.
At this time, the indicator 37 is provided for each deep-layer fertilizing nozzle 28, and the input end of each indicator 37 and the output end of each single pump in the pump 36 are connected to the input fertilizing pipe 3.
9a, the output end of each indicator 37 and the input end of each deep-layer fertilizing nozzle 28 are connected by an output fertilizing pipe 39b. The structure and function of the indicator 37 are similar to those of the conventional one.

At this time, as shown in FIG.
The indicator 37 and the pump 36 are provided offset from each other so that the straight line 1 passing through the center of 6 and the straight line l ′ passing through the input end of the indicator 37 do not overlap in a plan view. As a result, the input fertilizing pipe 39a connects the pump 36 and the indicator 37 in a substantially Z shape in a plan view, so that the connecting path becomes relatively long. Therefore, the lifting link 14 (lower link 1
Even if the indicator 37 swings up and down together with the planting machine 11 due to the vertical movement of 3b), the input fertilization pipe 39a does not have a short length, and the input fertilization pipe 39a follows the vertical movement of the indicator 37, and the lifting link The vertical movement of 14 is also smoothly performed.

In this embodiment, the rear fertilizer tank 31
Although the example in which paste fertilizer, which is one type of liquid fertilizer, is contained is described, other liquid fertilizers such as liquid fertilizer (liquid fertilizer) may be contained, and other liquid fertilizers may be contained. Also, the layout of the rear fertilizer tank 31 may be applied to the layout of the fertilizer tank of the fertilizer applicator for fertilizing granular fertilizer.

In this embodiment, an auxiliary step 58 for raising and lowering is provided on the side of the side step 19. As shown in FIGS. 1 and 2, the auxiliary step 58 is provided in the front and rear direction on the outer side of the rear fertilizer tank 31, and is attached to the side step 31 side so as to be insertable and removable. The auxiliary step 31 is attached to the traveling body 1 side by being attached to the side step 19 side when moving up and down to each step such as the side step 19, but in this state, the lateral width L'of the planting machine 11 is exceeded. Absent. The front end of the auxiliary step 58 and the rear fertilizer tank 31
The front ends of are almost coincident.

With the above structure, the auxiliary step 58 facilitates the raising and lowering to the side step 19 or the center step 18, and also facilitates the raising and lowering to the expansion step 22 located behind the rear fertilizer tank 31. And the workability on the side step 19 are improved.

Next, a shallow layer fertilization mechanism constituted by the aforementioned shallow layer fertilization nozzle 27, front fertilization tank 29, etc. will be described. The shallow fertilization mechanism is the same as that provided in the conventional riding rice transplanter, and has substantially the same structure as the deep fertilization mechanism described above. And the front fertilizer tank 29
Is provided below the hood 6, a pump 59 is provided at a substantially central position between the front wheel 2 and the rear wheel 3 below the body frame 4, and an indicator 62 is attached to the left lower link 13a.

The front fertilizer tank 29 is connected to the pump 59 by the front suction hose 61, and as shown in FIGS. 2 and 6, the pump 59 is connected to the indicator 62 by the input fertilizing pipe 63a. Output fertilizing pipes 63b are connected to the shallow layer fertilizing nozzles 27, respectively.

At this time, the output fertilization pipe 63b connecting the pump 59 and the indicator 62 has a shape having a horizontal portion toward the inside of the traveling machine body 1 as shown in FIGS. 6 and 7. -1 is provided, whereby the width of the entire output fertilization pipe 63b group from the pump 59 to the indicator 62 can be made compact, and the arrangement of other members such as the rod 67 becomes easy. That is, the space α is created by the shape of the output fertilization pipe 63b-1. And by the above, traveling machine body 1
The overall width can be made compact.

The front suction hose 61 is provided on the side of the transmission 68 as shown in FIGS. 2 and 8, and is held by guides 64 attached to the body frame 4 side and the transmission 68 side. A hydraulic pipe 66 also passes through the guide 64. Therefore, even if the soil mass carried by the front wheels 2 or the like falls near the hydraulic pipe 66, the soil mass is less affected by the soil by the guide 64 and the front suction hose 61.

[0051]

According to the present invention configured as described above, a relatively large space for getting on and off is provided in front of the fertilizer tank by rotating the fertilizer tank around the rear fulcrum and moving it away from the driver's seat. Not only is there an effect that it can be secured and the operator can easily get in and out of the driver's seat,
Even when the fertilizer tank is rotated inward to bring it closer to the driver's seat, the space between the seat and the fertilizer tank can be secured to facilitate passage of the passage, and the fertilizer tank is located outside the passage. Therefore, there is also an advantage that the fertilizer tank functions as a passage guard. Further, particularly when the auxiliary seedling mounting bases are attached to both sides of the bonnet, there is also an effect that the work for taking out the auxiliary seedlings from the auxiliary seedling mounting base can be more easily performed by the relatively large space in front of the fertilizer tank.

Further, in the case where the rear part of the fertilizer tank is restricted so as not to project rearward from the rotation fulcrum provided in front of the front end of the working machine in plan view in all the rotation ranges, the fertilizer tank is Can be easily installed in a position where it does not come into contact with the work machine in the entire rotation range, and the fertilizer tank can be made compact on the traveling machine side by bringing the rotation fulcrum and the rear end part of the fertilizer tank close to each other. It can also be installed.

[Brief description of drawings]

FIG. 1 is a plan view of a riding rice transplanter.

FIG. 2 is a left side view of a riding rice transplanter.

3A and 3B are a left side view and a plan view of a rear fertilizer tank portion.

4A and 4B are a left side view and a plan view of a rear fertilizer tank in a fixed state.

FIG. 5 is a side view showing a utility of a rear step.

FIG. 6 is a plan view of an indicator portion for the shallow layer fertilization mechanism.

7 (a) and 7 (b) are a plan view and a side view of an input fertilization pipe of the shallow layer fertilization mechanism.

FIG. 8 is a rear cross-sectional view of a front suction hose portion.

[Explanation of symbols]

1 traveling aircraft 8 driver's seat 11 working machine 23 passage 28 Deep fertilizer application nozzle (fertilizer application) 31 Rear fertilizer tank (fertilizer tank) 47 axes (rotation fulcrum)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-184438 (JP, A) JP-A-6-327326 (JP, A) Actual development 4-30819 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01C 11/00 302 A01C 23/00

Claims (2)

(57) [Claims] 1. A fertilizer provided on the side of the traveling machine body (1), the working machine (11) being connected to the rear of the traveling machine body (1) having a driver's seat (8). A fertilizer application section (28) for fertilizing the fertilizer in the tank (31) is provided. On the traveling machine body (1) side, from the driver seat (8) to the working machine (11) side to the side of the driver seat (8). In a mobile agricultural machine provided with a passage (23), a fertilizer tank (31) is rotatably attached to the upper side of the passage (23) with the passage (23) interposed therebetween, and a rotation fulcrum (47) is provided on the passage (23). ) Sandwiched fertilizer tank (31)
Behind the seat (7) in the driver's seat (8)
When the fertilizer tank (31) is rotated inward, the outer surface of the fertilizer tank (31) is located at the top of the traveling body (1).
Fold the fertilizer tank into a retracted position (A) that is substantially along the outside of the traveling machine body (1) without protruding outside the large width (L).
At the time of outward rotation of the front of (31), the fertilizer tank (3
The outer surface of 1) is the maximum lateral width (L) of the traveling body (1).
To the outside of the seat (7) to provide a space for getting on and off.
Fertilizer tank so that the work posture (B) is formed.
(31) A structure for mounting a fertilizer tank in a mobile agricultural machine in which the rotation limit position is restricted. 2. A turning fulcrum (47) of the fertilizer tank (31)
Is provided in front of the front end of the working machine (11) in plan view,
The fertilizer tank mounting structure for a mobile agricultural machine according to claim 1, wherein the turning range is restricted to a range in which the rear part of the fertilizer tank (31) does not project to the rear of the turning fulcrum (47).