JPH0755859Y2 - Slope correction structure for planting section of passenger rice transplanter - Google Patents

Description

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

(B) Prior Art The applicant previously applied for a planting part inclination correcting device for a riding rice transplanter that can freely adjust the inclination posture of the planting part by manual operation (Japanese Patent Application No. Sho 63-132209). issue).

Such a planting part inclination correction device is provided with a left and right supporting member for supporting a seedling mounting table on a planting part connected to a rear part of a traveling part so as to be swingable left and right and vertically movable through a link mechanism, and both supporting members are provided. Both ends of the rocking adjusting member are connected via tension springs, respectively, and the substantially central portion of the rocking adjusting member is supported on the traveling portion side by a rocking link that can be rocked left and right, The planting part inclination correction lever is linked and linked via a link.

(C) Problems to be solved by the invention In the above-mentioned planting part inclination correcting device, when the planting part is tilted to the left, right, or low, for example, at the edge of the ridge, the planting part inclination correcting lever is operated to move to the left or right. The spring pressure of the left tension spring interposed between the support member and the running part side can be adjusted to a large value, and the spring pressure of the right tension spring can be adjusted to a small value to forcibly correct the tilted posture of the planting part horizontally. When turning the machine to change the traveling direction, immediately operate the planting part inclination correction lever to release the forced tilting correction of the planting part. There is a problem that the planting depth on the left side and the right side is different due to the inclination, and there is a problem that the operator forgets to operate the lever accidentally.

(D) Means for Solving the Problems In the present invention, therefore, a planting unit is connected to the rear of a traveling unit that is self-propelled so as to be swingable left and right and movable up and down via a link mechanism. In the planting section inclination correcting structure of the riding rice transplanter provided with the planting section inclination correcting device capable of correcting the inclination of the planting section, the planting section is provided with a support frame via a rotation fulcrum shaft, Further, a spring receiving plate is interlockingly connected to the supporting frame so as to be swingable left and right, and both ends of the spring receiving plate are
Between the left and right seedling support columns, which are the left and right support members of the seedling mounting base,
A left side rolling regulation spring and a right side rolling regulation spring are provided respectively, and the planting section inclination correcting device is connected to the spring receiving plate by interlockingly connecting the planting section inclination correcting lever so as to operate in the same left and right directions. In addition, the tilting correction lever for the planting part, which is configured to move up the rising part of the planting part, provides the tilting correction structure for the planting part of the riding rice transplanter configured to restore the neutral position.

(E) Operational Effects According to the present invention, the following operational effects occur.

That is, in the present invention, the posture of the planting part can be easily adjusted according to the tilted field by operating the planting part inclination correcting lever left and right, and the operation direction of the lever and the corrected tilting direction of the planting part can be changed. It can be matched to eliminate the risk of erroneous operation.Furthermore, when the planting part is raised to turn the aircraft, the planting part inclination correction member is restored to the neutral position in conjunction with it, so the operator Therefore, it is not necessary to perform an operation to restore the same member to the neutral position one by one, and it is possible to prevent the occurrence of a defect that the left and right planting depths are different because the operation is forgotten.

(F) Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

(A) shown in FIG. 1 and FIG. 2 is a riding rice transplanter having a planting part structure according to the present invention.

In this riding rice transplanter (A), a planting section (15) is swingably connected to the rear of a traveling section (1) capable of self-propelling.

The traveling section (1) has the rear end of the vehicle body frame (3) carrying the engine (2) continuously connected to the mission case (4), and the front axle case (5) is provided on both front sides of the mission case (4). ) Is used to support the front wheels (6) for running paddy fields, and the rear wheels (8) for running paddy fields are supported on both rear sides of the mission case (4) via rear axle cases (7).

A spare seedling stand (10) is appropriately attached to both outer sides of the hood (9) covering the engine (2), and the axle case (5) is formed by a vehicle body cover (12) forming a step (11). (7) etc. are covered, the driver's seat (13) is attached to the upper part of the body cover (12), and the driver's seat (1
A steering handle (14) is provided in front of 3) at the rear of the bonnet (9).

In addition, the planting section (15) has a center planting case (20) arranged at the centerline position in the front-rear direction of the machine body, and left and right side planting cases are provided on the left and right sides of the case (20) at regular intervals. The case (20 ') (20') is attached.

Then, on the front part of the case (20), (20 '), (20'), the seedling mounting table (16) for planting five rows is installed through the guide rail (18) and the guide rail (19). It is slanted at the rear and is supported so that it can slide back and forth.

In addition, a rotary case (21) that rotates at a constant speed in one direction is attached to each of the rear right side of the center planting case (20) and the left and right rear sides of the left and right side planting cases (20 ') (20'). Attach a pair of claw cases (22) and (22) to the target position around the rotation axis of each case (21), and set each claw case (22).
The planting claws (17) (17) are attached to the tip of.

Further, a support frame (24) is provided on the front side of the planting case (20) via a pivot shaft (23), and the support frame (24) is connected to the top link (25) and the lower link (26). ) Is attached to the rear side of the traveling part (1) via a three-point type link mechanism (27), and a lifting cylinder (28) for moving the planting part (15) up and down via the link mechanism (27) is attached. ing.

With this configuration, the front and rear wheels (6) and (8) are driven to move to move the machine body at a substantially constant speed, and at the same time, one turn of the rotary case (21) from the seedling stand (16) that slides back and forth to the left and right. The two planting claws (17) (17) are used to take out the two seedlings so that the seedlings can be planted continuously and at high speed.

Further, in the figure, (29) is a traveling shift lever, (30) is a planting lever, (31) is a planting sensitivity adjusting lever, (32) is a traveling clutch pedal, and (33) and (33) are left and right brake pedals.

Further, as shown in FIGS. 3 and 4, the support frame (24) includes a top link (25) and a lower link (26).
Between the left and right sides of the central vertical frame (39) and the seedling stand (16), which are integrally supported at the rear end via the pins (37) and (38), and are integrally connected to the upper end of the frame (24). The rolling regulation first springs (40a) (40b) for regulating the rolling generated when the seedling placing table (16) is laterally fed are provided.

Further, as shown in FIGS. 3 to 6, the planting part (15) is provided with a planting part inclination correcting device (70) which is the gist of the present invention, and the configuration of the device (70). Will be described below.

That is, as shown in FIG. 3 and FIG. 4, the planting part inclination correcting device (70) includes a seedling placing column (41) (41) which is a left and right supporting member of the seedling placing table (16) and the vertical frame. A rolling restriction second spring (42a) (42b) is provided between (39),
A lower mounting plate (44) of the central vertical frame (39) is fixed to the upper fixing plate (43) of the support frame (24), and a bolt () is attached to the upper end mounting plate (45) of the vertical frame (39). A spring pressure adjusting plate (47) having a large number of adjusting holes (47a) is attached via the above (46), and left and right spring stands (48) (48) fixed to the left and right rear surfaces of the seedling stand (16), and The first springs (40a) (40b) are stretched between the left and right ends of the adjusting plate (47) so that the rolling generated by the lateral feed of the seedling placing table (16) during work is restricted to the maximum. is doing.

In addition, the lower end of the swinging link (50) is pivotally supported by an intermediate portion of the vertical frame (39) via a fulcrum pin (49), and a spring, which is a rolling adjustment member, is attached to the upper end of the link (50). A substantially central portion of the receiving plate (52) is attached by a rotating pin (51).

In addition, right and left side planting cases (20 ') and (20') are provided with right and left seedling mounting columns (41) and (41), respectively.
1) Seedling shoe (53) (53) attached to the upper end of (41)
Further, the guide rail (19) of the seedling placing table (16) is laterally slidably fitted.

Further, the spring pressure adjusting plate (54) having a large number of adjusting holes (54a) at the upper ends of the left and right seedling mounting columns (41) (41).
Is mounted by a bolt (55) through a mounting bracket (56), and the left and right rolling restriction second springs (42a) are provided between the adjusting plate (54) and the spring receiving plate (52).
(42b) are installed respectively.

Further, a planting part inclination correcting lever (58) as a planting part inclination correcting member is interlocked with a pin (57a) (57b) via a linking link (57) at an intermediate portion of the swing link (50). The levers (58) are connected to each other as shown in FIG.
It is attached to a fixed seat (59a) of a box-shaped lever guide case (59) fixed to the vertical frame (39).

As shown in FIG. 4, the fixed seat (59a) has a dimension (t) on the left side in rear view with respect to the central vertical frame (39).
It is offset only, and the pin (6
0) is projected rearward, and the base end mounting part (58b) of the planting part inclination correction lever (58) is mounted on the pin (60) so as to be swingable left and right and slidable back and forth, Edge mounting part (58
b) and spring seat (62) attached to the tip of the pin (60)
A position holding spring (61) is provided between and.

With such a configuration, the operator can easily operate the upper end grip portion (58a) of the planting portion inclination correction lever (58) by simply turning around while sitting on the driver's seat (13). When 58) is operated in the right or left direction (arrow direction (a) or (b) in FIG. 4), the left or right second spring (42a) or (42b) is pulled and at the same time the right or left side is pulled. Loosen the second spring (42b) or (42a) so that these springs (42a) (42b)
The supporting force on the left side or the right side of the planting part (15) is increased, and the supporting force on the right side or the left side of the planting part (15) is reduced.

Further, as shown in FIG. 6, in the upper wall (59b) of the lever guide case (59), the neutral guide groove (59c) and the left and right tilt correction guide grooves (59d) (59d) located on the left and right sides thereof are provided. Five
9e) is provided, and the middle part of the planting part inclination correction lever (58) can be engaged with each groove.

Further, as shown in FIGS. 3 to 6, a lever neutral restoring link (80) is provided between the planting part inclination correcting lever (58) and the link mechanism (27).

That is, the lever neutral restoring link (80) is provided between the left and right side walls (59f) (59g) of the lever guide case (59) between the left and right side base ends (81a) (81a) of the gate-shaped lever disengagement body (81). 81b)
Is pivotally supported by the pivot pins (82) (82) so that it can swing back and forth, and the swing arm (83) extends rearward and downward from the left base end (81a).
And extend the tip of the arm (83) and top link (2
5) A connecting rod (85) is provided between the connecting bracket (84) and the protruding connecting bracket (84) at the rear part. (86) and (87) are connecting pins.

Further, (93) is an abutting body protruding from the lower link (26), and (94) is a left and right side planting case (20 ') (20').
The rolling restriction body (95) attached to the
It is a rubber body attached to the lower end of 4).
Further, the abutment body (93) comes into contact with the upward movement of the link mechanism (27) to regulate the rolling of the planting part (15), so that the planting part (15) becomes horizontal. I try to hold it.

With this configuration, when the link mechanism (27) is rotated upward to raise the planting portion (15), the connecting rod (85) moves downward (direction of arrow (C) in FIG. 6) and shakes. While rotating the movable arm (83) forward, the lever engagement releasing body (81) is also rotated rearward so that the releasing body (81) is in the guide groove (59d) (59e) on either side. The engaged planting part inclination correction lever (58) is slid rearward against the bias of the position holding spring (61) to release the engagement between the lever (58) and the guide groove. The lever (58) can be restored to the neutral position by the spring force of the left and right rolling restriction second springs (42a) (42b).

Further, FIG. 7 shows a planting part inclination correcting device (70) as another embodiment.

In the correction device (70), the middle portion of the planting portion inclination correction lever (58) is pivotally biased rearward to engage with the guide groove provided in the lever guide body (90). (9
6) is a rotation biasing spring, and (97) is a lever rotation support shaft.

Then, as the lever neutral restoring link (80), the receiving body (91) is projectingly provided at the base end of the lever (58), while the lever engaging release projecting piece (92) is projecting to the top link (25). The link (80) causes the projecting piece (92) to press and rotate the receiving body (91) in conjunction with the upward rotation of the link mechanism (27), and thus the lever (58). It is designed to be rotated in the disengagement direction.

Further, the operator can operate the lever (58) or the spring receiving plate (52) from a remote position by operating the lever (58) of the planting portion inclination correction lever (58) without directly operating it directly. .

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

That is, when the right side of the traveling part (1) is traveling along the ridge during the planting work and the planting part (15) is inclined to the left low right high, the planting part inclination correction lever ( 58) is operated in the right direction (a) arrow direction to increase the pulling force of the left side rolling regulation second spring (42a) that supports the left side of the planting part (15) with respect to the central vertical frame (39). At the same time, the right side rolling restriction second spring (42b) supporting the right side of the planting part (15) is adjusted so as to have a small tensile force to increase the ground pressure of the right side float (36). The ground pressure of the left side float (36) can be reduced to horizontally hold the planting part (15).

Moreover, in the present embodiment, the planting part inclination correction lever (58) is provided on the left side by being offset by the dimension (t) with respect to the central vertical frame (39), and at the same time as the central vertical frame (39). Tilt the (58) toward the driver's seat (13) and move the upper grip (58a) of the lever (58) to the driver's seat (1).
Since it is brought close to 3), the operator can easily operate the lever (58) while sitting in the driver's seat (13) and turn to the rear to improve workability.

Further, when the lever (58) is tilted in the right direction (a), the pulling force of the left side rolling regulation second spring (42a) becomes large and the posture of the planting part (15) is neutral. Since the correction is made to be higher left and lower right, the operating direction of the lever (58) and the corrected tilt direction of the planting part (15) will be in agreement with each other, which may cause the operator to get lost or make a mistake. It is also sensuously good and enables accurate and prompt operation.

Further, in this embodiment, the planting section (1
When 5) is lifted through the link mechanism (27), the lever neutral restoration link (80) is provided between the link mechanism (27) and the planting part inclination correction lever (58). The operator does not need to perform an operation to restore the lever (58) to the neutral position one by one in order to restore the attached portion inclination correction lever (58) to the neutral position. Moreover, since the operator forgets such an operation, the left and right planting depth It is also possible to prevent the occurrence of the problem that the difference occurs in the height.

[Brief description of drawings]

FIG. 1 is a side view of a riding rice transplanter equipped with an inclination correcting structure for a planting part according to the present invention. FIG. 2 is a plan view of the passenger rice transplanter. FIG. 3 is a sectional side view of the planting part. FIG. 4 is a rear explanatory view of the main part. FIG. 5 is a sectional side view of a main part. FIG. 6 is a partially cutaway perspective view of a main part. FIG. 7 is an explanatory diagram of a raised state of a planting part including a planting part inclination correcting device as another embodiment. FIG. 8 is an explanatory view of the descending state of the planting part. (A): Passenger rice transplanter (1): Running section (15): Planting section (16): Seedling table (27): Link mechanism (41): Seedling column (42a) (42b): Spring (50) ): Swing link (52): Spring receiving plate (57): Linkage link (58): Tilt correction lever for planting part (80): Lever neutral restoration link

Claims (1)

[Scope of utility model registration request] 1. A rear part of a self-propelled running part (1) is connected with a planting part (15) via a link mechanism so that the planting part (15) can swing left and right and can be raised and lowered. In the tilt correction structure for a planting part of a passenger rice transplanter, which is provided with a planting part tilt correcting device (70) capable of correcting the tilt of the planting part (15), the planting part (15) has a rotation fulcrum shaft ( 23) via which a support frame (24) is provided, and a spring support plate (52) is interlockingly connected to the support frame (24) so that the spring support plate (52) can swing left and right, and both ends of the spring support plate (52) and seedlings. A left side rolling restriction spring and a right side rolling restriction spring are respectively interposed between the left and right seedling mounting columns (41) (41) which are the left and right supporting members of the mounting table (16), and the spring receiving plate (52). In order to operate the planting part inclination correction lever (58) in the same direction on the left and right, The planting part (70) is constructed, and the planting part inclination correcting lever (58) is configured to restore the neutral position to the planting part inclination correction of the planting part (15) when the planting part (15) is moved upward. Construction.