JPH0711535Y2 - Rice transplanter - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use The present invention relates to a rice transplanter for riding.

(B) Conventional Technology Conventionally, as a rice transplanter for riding, one described in Japanese Patent Publication No. 57-41885 has been developed.

That is, as shown in FIG. 9, the riding rice transplanter comprises a planting device (93) connected to the rear of the rice transplanter main body (90) so as to be able to move up and down through an elevator link mechanism (92). The front ends of a pair of left and right transmission cases (96) (96) are connected to the left and right side walls of the transmission case (94) of the machine body (90), and the rear wheels are attached to the rear ends of the transmission cases (96) (96). (95) (95) is attached, a horizontal machine frame (97) is laid horizontally between the transmission cases (96) and (96), and a column (98) is erected on the horizontal machine frame (97). The lifting link mechanism (92) is attached to the column (98).

(C) Problems to be solved by the invention However, in the case of the above-mentioned riding rice transplanter, the lifting link mechanism (92) that moves up and down between the pair of left and right transmission cases (96) (96),
In order not to interfere with the transmission case (96) (96), the lifting link mechanism cannot be configured to be wide,
It was difficult to secure the rigidity against the twisting action by the rolling of the planting device (93).

On the other hand, if the lifting link mechanism is configured to be wide to ensure rigidity, it is necessary to widen the space between the left and right transmission cases in order to prevent interference with the lifting link mechanism. In that case, there is a problem in that the distance between the rear wheels (95) (95) attached to the rear end of the transmission case becomes wider and the turning radius of the airframe becomes larger, so that a smooth turning operation cannot be performed.

Further, since the machine frame for supporting the lifting link mechanism is partially configured by the transmission cases (96) (96), the structure for ensuring the rigidity of the transmission cases (96) (96) is complicated. In addition, the weight of the transmission cases (96) and (96) is increased, which causes a problem that the weight of the entire body is increased.

Moreover, it is difficult to install and remove the transmission case (96),
There was a problem that it took time to maintain the transmission case (96).

(D) Means for Solving Problems Therefore, in the present invention, in the rear of the self-propelled rice transplanter main body,
In a riding rice transplanter in which a planting device is vertically linked via a lifting link mechanism, a pair of left and right lower connecting frames are extended rearward from a mission case of the rice transplanter body,
A lower connecting horizontal frame is laid horizontally between the rear ends of each frame, and rear axle cases are attached to the left and right side ends of the lower connecting horizontal frame, and the inner wall of each rear axle case is formed inwardly to form a concave shape. While forming a non-interference space inside the rear axle case to prevent interference with the lifting link mechanism, a pair of left and right vertical frames are erected on the upper left and right sides of the lower connecting horizontal frame, and both vertical frames are (EN) A riding rice transplanter characterized by pivotally supporting a front end portion of an elevating link mechanism and allowing a rear end side of the elevating link mechanism to be vertically slidable.

(E) Action / Effect According to the present invention, the following action / effect is produced.

That is, rear axle cases are attached to the left and right side ends of the lower connecting horizontal frame that is laid between the rear ends of the pair of left and right lower connecting frames, and the pair of left and right vertical frames are erected vertically on the lower connecting horizontal frame. The front end of the link mechanism is pivotally supported, and the rear end side of the lifting link mechanism is vertically slidable,
Since the inner wall of each rear axle case is formed inwardly concave and a non-interference space is formed on the inside of each rear axle case to prevent interference with the elevating link mechanism, raising and lowering of the planting device It is possible to make the front-rear width of the lifting link mechanism as short as possible while ensuring the lifting rotation range of the lifting link mechanism.

Therefore, the planting device is connected to the rear of the rice transplanter body via the lifting link mechanism, and the front-rear width of the machine can be shortened to make the machine compact, and the turning radius of the machine can be reduced. By making the size smaller, the turning operation can be performed easily, and the storage space of the machine body can be reduced.

Further, since the elevating link mechanism can be formed wide in the left and right, the rigidity of the elevating link mechanism against the twisting action of the planting device due to rolling or the like can be increased.

In addition, since the distance between the left and right rear axle cases can be set to a width that can keep the distance between the rear wheels attached to the cases to a certain narrow width, it is possible to maintain good traveling performance of the aircraft. .

Furthermore, the rear axle case and the lifting / lowering link mechanism are supported by the lower connecting frame that can easily secure bending and torsional rigidity, so that the structure can be simplified and the weight of the machine body can be reduced.

Since the rear axle case is attached to the rear end of the connecting frame, the case can be easily attached and detached, and the case can be easily maintained.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. (A) shown in FIGS. 1 and 2 is a riding rice transplanter, which is provided behind a self-propellable rice transplanter body (1). The planting device (2) is connected via a lifting link mechanism (3) so as to be lifted and lowered.

Then, the rice transplanter main body (1) mounts the prime mover part (4 ') on the machine body frame (a), connects the front end part of the mission case (4) to the rear end of the machine body frame (a), Left and right front axle cases (5) and (5) are projectingly provided on the left and right sides of the front part of the mission case (4), and each case (5) (5)
Front wheels (6) and (6) are attached to the rear end of the transmission case (4), and the connecting frame (7) is connected to the rear end of the transmission case (4). (8)
(8) is attached, and the rear wheel (9) is attached to each case (8) (8).
(9) is attached, and the operating section (10) is provided above the mission case (4) and the connecting machine frame (7).

The operating section (10) is provided with a front casing (11) that also serves as a bonnet of the prime mover section (4 ') and a handle column, and a handle (12) is attached to the upper surface of the casing (11). A sub-transmission lever (13) is provided on the upper left side surface so as to project upward, and a seat (14) is provided on the coupling frame (7) behind the casing (11).
Main shift lever (15) is installed on the left side of the
A planting lift lever (15 ') is arranged on the right side of the.

Further, (16) is a lower seat casing integrally molded with a synthetic resin having high rigidity such as FRP so as to also serve as a floor surface, a speed change guide plate, a fender, a seat mounting plate, etc., and the seat (14) is the same. It is attached directly to the casing (16).

(17) is a drive shaft provided in the motor part (4 '), (18) is a passive shaft provided in the upper rear part of the mission case (4), (19)
Is a transmission belt wound between the drive shaft (17) and the passive shaft (18).

(20) and (20) are the output shafts (21) and (21) projecting from the left and right sides of the center of the mission case (4), and the input shafts (22) and (22) of the left and right rear axle cases (8) and (8). It is a transmission shaft interposed between.

Further, as shown in FIGS. 3 to 5, the coupler frame (7) has a pair of left and right lower coupling frames (30) (30) inclined rearward and downward from the rear left and right side walls of the mission case (4). And a lower connecting lateral frame (31) is laterally connected between the rear ends of the connecting frames (30) and (30) to form a machine frame having a rectangular shape in plan view, and the lower connecting horizontal frame (31 ), A pair of left and right vertical frames (32) (32) are erected, and an upper connecting horizontal frame (33) is horizontally connected between the upper ends of the vertical frames (32) (32) to form a rectangular shape in rear view. Forming the machine frame, and between the upper parts of the vertical frames (32) (32) and the rear upper left and right side walls of the mission case (4),
By constructing a pair of left and right upper connecting frames (34) (34) in a front-rear-rear-high inclined manner to form a machine frame that is rectangular in plan view and a machine frame that is trapezoidal in side view, It has a three-dimensional box frame structure. (30a) is a front end connecting part of the lower connecting frame, and (34a) is a front end connecting part of the upper connecting frame (34).

Then, the upper and lower connecting frames (34) (3
4) Reinforcement horizontal axis (35) (36) between each halfway of (30) (30)
Horizontally connecting the upper and lower connecting frames on the left and right (34)
Reinforcing plates (37) (37) are stretched between the front parts of (34) (30) (30). (S) is an internal space formed by the connector frame (7).

As described above, since the connecting machine frame (7) has a three-dimensional box-type frame structure, it can be made lighter and have higher rigidity against bending, twisting, etc., and the interior formed by the connecting machine frame (7). The space (S) can be a space for disposing the lifting cylinder (47) and the like, as described later.

In addition, the lower connecting frames (30) (30) described above are made of a straight pipe having a rectangular cross section, are inclined downward toward the rear lower side, and have rear axle cases (8) (8) attached to their respective rear ends.

Therefore, the ground height of the rear axle cases (8) and (8) attached to the rear ends of the lower connecting frames (30) and (30) is lowered, and the rear axle cases (30) and (30) are laid across the rear ends of the frames. Since the mounting height of the elevating link mechanism (3) to the vertical frames (32) (32) erected on the lower connecting horizontal frame (31) can be lowered, the elevating link mechanism (3) was attached to the elevating link mechanism (3). The raising / lowering operation control of the planting device (2) can be performed in a stable state.

In addition, as shown in FIG. 4, the left and right lateral widths (W) of the rear ends of the mission case (4) that connects and supports the front ends of the left and right lower connecting frames (30) (30) are the same as the mission case in plan view. It is formed to be narrower than the front lateral width (W) of (4), and the width (W ') between the outer surfaces of the frames (30) and (30) is smaller than the front lateral width (W) of the mission case (4). Is also narrow.

The width between the outer surfaces of the left and right upper connecting frames (34) (34) is also substantially the same as the width between the outer surfaces (W ') of the left and right lower connecting frames (30) (30).

The main transmission lever (15) is attached to the left end of the reinforcing horizontal shaft (35), the base end of which is horizontally bridged between the middle parts of the left and right upper connecting frames (34) (34). The lifting lever (15 ') with a plant has a base end on the right side of the upper connecting frame (34).
It is attached to the lever support shaft (38) that projects more laterally outward.

In addition to this, the main transmission lever (1
5), and the operation system other than the planted lift lever (15 ') and the fulcrum of the interlocking link system linked to these levers can be freely provided without interfering with other members.

Further, the rear ends of the upper connecting frames (34) (34) are fixed to the inner walls of the upper portions of the vertical frames (32) (32), respectively. (3)
A support shaft (41) pivotally supporting the front end of the upper link (43) of the above is mounted between the upper parts of the vertical frames (32) (32).

Therefore, by the upper connection frame (34) (34),
It is possible to reinforce the vertical frames (32) (32) to which a tensile force acts via the upper link (43).

In addition, the transmission shafts (20) (20) are provided outside the lower connecting frames (30) (30) in a side view thereof.
It is located substantially on the same line as (30) and on the line connecting the output shaft (21) of the mission case (4) and the rear axles (9a) (9a).

The lifting link mechanism (3) is interposed between the vertical frames (32) (32) of the connector frame (7) and the planting device (2).

That is, the up-and-down link mechanism (3) has a support shaft (41) in which the front end is erected between the upper portions of the pair of left and right vertical frames (32, 32).
And the rear end of the planting frame (42) of the planting device (2).
The upper link (43) connected to the upper part of the shaft (43a) and the front end to the lower part of the left and right vertical frames (32) (32)
a) (44a) and a parallel link with a pair of left and right lower links (44) (44) pivotally supported by a connecting support shaft (45) which is connected to the rear end of the planting frame (42) between the lower ends thereof. Between the front ends of the pair of left and right lift arms (46) (46), whose base ends are integrally attached to the front ends of the lower links (44) (44), and the lower rear end of the mission case (4). An elevating cylinder (47) is provided in the interior space (S) of the coupling machine frame (7) between the lift arms (46) (46) and the coupling support shaft (45). It is configured by interposing tension reinforcing links (48) (48).

Further, (54) is a reinforcing horizontal frame horizontally connected between the front parts of the left and right lower links (44) (44), and (55) is a horizontal frame between the middle portions of the tensile reinforcing links (48) (48). It is a connected reinforcing horizontal frame.

In addition, the lifting cylinder (47) includes a cylinder rod (47
By shortening a), the lift arm (46)
Rotate (46) forward and downward to move the upper and lower links (43) (4
4) The planting device (2) can be raised by operating the planting device (2) via the (44), and conversely, the cylinder rod (47a) can be extended by operating the planting device (2). There is. (47b) is a rear end connecting portion of the cylinder rod (47a).

Therefore, the lifting cylinder (47) requires a smaller amount of oil as compared with the case where the planting device (2) is lifted in conjunction with the extension operation of the cylinder rod (47a), and thus can be downsized. Further, the connecting machine frame (7) surrounding the lifting cylinder (47) and the like can be downsized, and the entire machine body can be made compact.

Moreover, the base end of the lifting cylinder (47) is connected to the lower rear end located below the lower connecting frame (30) (47c).
The height of the lifting cylinder (47) is lowered in combination with the reduction of the height of the lifting link mechanism (3) described later.

Therefore, since the lifting cylinder (47) is disposed at the substantially central portion of the front and rear wheels (6) and (9) and at a low position, the body balance is good and the running stability and work stability are excellent. It becomes a thing.

Further, the rear axle cases (8) and (8) described above are provided with connecting plates (see FIGS. 2, 3, 6, and 7) provided at both ends of the lower connecting frame (31). 31a) (31a), each case (8) (8) inner wall (8a)
Each case (8) is formed by forming the recess (8a) from the vicinity of the connecting portion with the lower connecting horizontal frame (31) to the rear end in a notched state.
A space (S ') (S') that does not interfere with the lower links (44) and (44) of the lifting link mechanism (3) is formed on the inner side of (8).

Then, the lower links (44) (44) of the lifting link mechanism (3) can move up and down in the non-interference spaces (S ′) (S ′), and the left and right lower links (44) ( Four
In addition to widening the interval of 4), the mounting positions of the front ends of the lower links (44) (44), which are pivotal fulcrums, are made as low as possible (see Fig. 3).

Further, in the planting device (2) shown in FIGS. 1 and 2, (51) is a planting mission case, (52) is a seedling mount,
(53) is a float.

Further, (50) is a mission case (4) of the rice transplanter body (1) and a mission case (51) of the planting device (2).
It is a planted transmission shaft that connects and link with.

The transmission shaft (50) is formed by interlocking the front transmission shaft (50a) and the rear transmission shaft (50b) via a universal joint (50c).

The front transmission shaft (50a) has its front end interlockingly connected to the mission case (4) in the internal space (S) of the coupling machine frame (7), and its rear end as shown in FIG. It is pivotally supported by the pivotal support (56) fixed to 44b).

The rear transmission shaft (50b) is configured such that the outer pipe shaft and the inner pipe shaft are spline-fitted to be extendable and contractible, and the front end thereof has the shaft support portion (5b).
Immediately after 6), at the rear end of the front transmission shaft (50a), the universal joint (50
The rear end is linked to the planted mission case (51) via c).

Therefore, in the planted transmission shaft (50), even when the planting device (2) moves up and down, the rear transmission shaft (50b) has a universal joint (50).
It rotates up and down around c) and expands and contracts to ensure the power transmission function from the mission case (4) of the rice transplanter body (1) to the planting mission case (5) of the planting device (2). Is something that can be done.

The embodiment of the present invention is configured as described above, and according to this embodiment, the following operational effects are produced.

Since the space (S ') (S') that does not interfere with the lower links (44) (44) of the lifting link mechanism (3) is formed inside the rear axle case (8) (8), Even if a straight rectangular pipe is used for the lower links (44) (44), the spacing between the lower links (44) (44) should be wide without interfering with the rear axle cases (8) (8). Therefore, it is possible to enhance the rigidity against the twisting action of the planting device (2) due to rolling or the like.

The distance between the left and right rear axle cases (8) and (8) should be as narrow as possible so that the distance between the rear wheels (9) and (9) attached to the cases (8) and (8) can be kept constant. As a result, it is possible to maintain good traveling performance of the airframe.

Since the pivotal fulcrum positions of the lower links (44) (44) are set as low as possible, the stability of the rice transplanter body (1) is improved and the lower connecting lateral frame (31) that supports the rear axle case is provided. ) A pair of left and right vertical frames (32)
Since the front end of the lifting link mechanism (3) is pivotally supported by the (32), the total length of the lifting link mechanism (3) can be shortened, and the planting device (2) can be installed in the rice transplanter body ( The lifting and lowering operation can be smoothly performed in the state of being brought close to 1), and the riding rice transplanter (A) as a whole can be made compact.

Since the rear axle case (8) (8) and the lifting link mechanism (3) are supported by the connecting machine frame (7) that can easily secure bending and torsional rigidity, the structure is simplified and the weight of the machine body is reduced. Can be realized.

Since the rear axle cases (9) and (9) are attached to the rear ends of the connecting frames (30) and (30), the cases (9) and (9) can be easily attached and detached. The maintenance of (9) can be done easily.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a riding rice transplanter according to the present invention. The second is the same plan view. FIG. 3 is a side view of a main part. FIG. 4 is a plan view of an essential part. FIG. 5 is a perspective view of a coupling machine frame. FIG. 6 is an enlarged side view of the main part. FIG. 7 is an enlarged plan view of a main part. FIG. 8 is a perspective view of the midway part support structure of the planted transmission shaft. FIG. 9 is an explanatory diagram of a conventional structure. (A): Passenger rice transplanter (1): Rice transplanter body (2): Planting device (3): Lifting link mechanism (4): Mission case (8): Rear axle case (8a): Inner wall (30): Lower connection frame (S '): Non-interference space

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Kitagawa, Hiroshi Kitagawara 2-18-1, Inadera, Amagasaki City, Hyogo Prefecture Kanzaki High-grade Machinery Works Co., Ltd. (56) References Application No. 60-147335 No. 62-57606) Microfilm (JP, U) filming the details and drawings attached to the application

Claims (1)

[Scope of utility model registration request] 1. A riding rice transplanter comprising a self-propelled rice transplanter main body (1) and a planting device (2) connected to the rear of the rice transplanter main body (1) via an elevating link mechanism (3) so as to be movable up and down. Extend a pair of left and right lower connecting frames (30) and (30) rearward from the mission case (4) of (1),
Lower connecting horizontal frame (31) between the rear ends of each frame (30) (30)
And the rear axle cases (8) and (8) are attached to the left and right ends of the lower connecting horizontal frame (31), respectively, and the inner side walls (8a) and (8a) of the rear axle cases (8) and (8) are attached.
Each recessed inward to form a rear axle case (8)
A non-interference space (S ') (S') for preventing interference with the lifting link mechanism (3) is formed on the inner side of (8), and on the left and right side portions of the upper surface of the lower connecting horizontal frame (31). Stands up a pair of left and right vertical frames (32) (32), and sets both vertical frames (32) (3
A riding rice transplanter descending system characterized in that the front end of the lifting link mechanism (3) is pivotally supported on 2) and the rear end side of the lifting link mechanism (3) can be vertically swung.