JPH0627050Y2 - Seedling feeding device in rice transplanter - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to an improvement of a seedling feeding device in a rice transplanter.

Conventional technology and problems The seedling table of rice transplanters is generally equipped with a seedling feeding mechanism consisting of belts, star wheels, rollers, etc. The seedlings are shaken each time they are scraped off, so that the mat seedlings on the seedling mounting table are fed to the seedling take-out port side. However, in the structure in which the number of plantings can be adjusted by changing the seedling scraping width in the seedling feeding direction, that is, in the front-back direction of the seedling mounting table, a problem occurs due to the relationship between the seedling feeding amount and the scraping amount.
That is, if the feeding amount of seedlings cannot be adjusted according to the change in the scraping amount, the compression amount at the front end of the mat seedlings will differ due to overfeeding, etc., and the seedling density will differ, making it impossible to plant an appropriate number of seedlings. Is.

As a means for solving this inconvenience, conventionally, a stopper for regulating the returning position of the operating body of the seedling feeding mechanism is provided, and the stopper is moved back and forth by interlocking with a scraping amount adjusting handle provided on the swing arm side of the planting claw. It is also proposed to connect to the working body via a wire, but the structure is complicated, and in the case of a multi-row planter planting machine, etc. where multiple rows are planted at the same time, the seedling scraping amount is adjusted for each row. In that case, it is difficult to uniformly adjust the amount of seedlings to be fed out for each row, and there are drawbacks such as low practicability.

Means for Solving the Problem Therefore, the present invention is directed to the seedling feeding which operates intermittently in response to an actuating member which is forcibly rocked by contacting a longitudinal feed driving body at the left and right reciprocating movement end sides of the seedling placing table. In the multi-row planting rice transplanter, the mechanism is attached to the seedling mounting table, and the scraping amount of the unit planting stock to be scraped off by the planting rod can be adjusted by operating the seedling scraping amount adjusting tool. To the seedling feeding stop mechanism that works when the planting clutch is disengaged, while fixing the two left and right actuating bodies of the seedling feeding mechanism to a single swinging fulcrum shaft that rotatably extends over multiple rows on the seedling mounting table. When the actuating body is rotated, the seedling feeding mechanism is switchably linked to the feeding operating state and the non-operating state, and the swinging fulcrum shaft is provided with a single connecting tool so as to regulate the return position of the operating body. To solve the above problems by connecting the seedling scraping amount adjuster. To do.

Action When the scraping amount of the seedlings is adjusted by operating the scraping amount adjusting tool, in response to this, one swinging fulcrum shaft rotatably laid across multiple rows on the seedling table and fixed to the shaft. The two left and right actuated bodies are integrally rotationally displaced at the same angle, and since the seedling feeding amount is adjusted by this, the density of seedlings can always be kept constant, and the number of planted plants depending on the difference in mat seedling compression amount Since the variation disappears and the seedling feeding amount of each row changes uniformly according to the magnitude of the seedling scraping amount, there is no unevenness in the seedling feeding amount between the rows and the planting accuracy is further improved.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described with reference to an embodiment shown in the drawings. A is a planting unit mounted on a traveling machine body of a rice transplanter via a three-point link mechanism 1 and the like so as to be vertically movable. Below the case 2, there is a floating pad 3 for sliding down a field, and above the drive case 2 is a seedling stand 4 on which a mat seedling (not shown) is placed via a left-right reciprocating drive mechanism (not shown). It is erected so that it can freely reciprocate left and right and has a high front and low height. Further, planting rods 5, 5 ... Are provided on the rear side of the seedling placing table 4 so as to be vertically rotatable so as to constitute a rice transplanter for multi-row (five-row) planting.

Rollers 6 and 7 are provided on the rear surface of the seedling placing table 4 on the side closer to the seedling take-out port.
Is rotatably supported via shafts 8 and 9, and a belt 10 with a protrusion for feeding seedlings is wound between the rollers 6 and 7, and the shaft 8 of one roller 6 is shown in FIG. As shown, the shaft is divided into two pieces or three pieces (8a, 8b, 8c) for each piece, and the divided shafts 8a, 8b,
The ratchet wheels 11a, 11b, 11c are fixed to 8c.
Lever 12 having a ratchet claw near b and 11c
a, 12b, 12c are respectively shafts 8a, 8b, 8c
It is rotatably attached to. And these levers 1
2a, 12b, 12c are connected to the planting rod stop levers 15, 15, 15 via the plate 13 and the wire 14, respectively.

By the way, as shown in FIGS. 2 and 3, the plate 13 is a slidable shape of a long plate 13a and a short plate 13b having different lengths l ₁ and l ₂ and having long holes 16 and 17, respectively. A pin 18 projecting from the levers 12a, 12b, 12c and a pin 21 projecting from an actuating body 20 described later are loosely fitted in the elongated holes 16 and 17, respectively. 1
Numeral 9 is one swinging fulcrum shaft which is located substantially in the middle of the shafts 8 and 9 and is rotatably provided on the back surface of the seedling table over a plurality of rows. The fulcrum shaft 19 has the ratchet wheel 11a, Two left and right actuating bodies 20 of the seedling feeding mechanism B are fixedly attached to face 11b.

Reference numeral 21 denotes a pin projecting from the actuation body 20.
Through the pin 21, a long plate 13a, a short plate 13b described later, and the long holes 16 and 17 provided in these plates 13a and 13b, the planting rod stop lever 15 is operated to operate a planting clutch (not shown). ) A seedling feeding stop mechanism D that operates when turned off is connected so that the seedling feeding mechanism B can be switched between a feeding operating state and a non-operating state when the actuating body 20 rotates.

Reference numeral 22 denotes a rotating body of a vertical feed driving body in which rollers 22a are pivotally mounted on both left and right sides. The rotating body 22 is always rotated counterclockwise in FIG. 2 about a support shaft 22 'by a power transmission system in the drive case 1. After the seedling mounting table 4 comes to the left and right moving ends and the planting rod scrapes off the last stock in the moving process, the roller 22a of the rotating body 22 hits the operating body 20 to rotate the operating body 20. In order to push it up to the outside of the rotation trajectory of the body 22, the actuating body 20 and its swing fulcrum shaft 19 rotate clockwise by a predetermined angle (state shown in phantom in FIG. 2), whereby the short plate 13b is moved to the position shown in FIG. The lever 12 is pulled upward in
a also rotates in the clockwise direction to rotate the ratchet wheel 11a, the shaft 8a, and the roller 6 in the same direction by a predetermined pitch. The rotation of the roller 6 causes the belt 10 with protrusions to rotate in the direction of arrow a. The mat seedlings on the seedling mounting table 4 are movably moved and fed out by a predetermined amount to the seedling take-out port side, and these constitute a seedling feeding mechanism B. By the rotation of the swing fulcrum shaft 19, the shafts 8b and 8c also rotate at the same pitch at the same time as the shaft 8a.

By the way, when the actuating body 20 is rotated, the pin 21 protruding from the actuating body 20 has a long plate 13a as shown in FIG.
Since it does not contact the upper edge of the long hole 16 of the long plate 13
a does not move, but one end of this long plate 13a is connected to the upper back surface of the seedling mounting table 4 via the wires 14 respectively.
Stop lever 15 provided with a tilting rod that is tiltable left and right along the
Are linked to.

The lever 15 has a wire 2 for disconnecting the planted clutch.
4 is connected, and this lever 15 is turned off (4th
When the wire 24 is pulled, the wire 24 is pulled and the planting clutch (not shown) is disengaged, and the corresponding planting rod 5 is stopped, and at the same time, the wire 14 is pulled and the seedling feeding action of the row is performed. Are stopped, and these constitute a seedling feeding stop mechanism D that is activated when each planting clutch is disengaged.

That is, when the planting rod stop lever 15 is operated to the "off" side, the long plate 13a is pulled through the wire 14 and the lever 12a rotates clockwise by a predetermined angle, but at this time, the short plate 13b does not move. Since it is stationary at its original position, the short plate 13b is pulled by the pin 21 of the actuating body 20 and idles only when the actuating body 20 is pushed up by the roller 22a of the rotating body 22 and the lever 12a is moved. Does not rotate, and thus seedling feeding is stopped. 23
Is an outer stop.

Reference numeral 25 denotes an arm fixed to the shaft end of the swing fulcrum shaft 19 facing the ratchet wheel 11c. The arm 25 is connected to the long plate 13a and the short plate 13b, and the arm 25 and the planting rod stop lever 15 are connected. The connecting structure with and is similar to each connecting structure in the actuation body 20.

Reference numeral 26 is a seedling scraping amount adjusting tool. This adjusting tool 26 has a substantially L-shaped front surface as shown in FIG. 4, and is an apron that receives the front edge of the mat seedling when tilted to the left or right around the support shaft 27. The lever 28 is forcibly moved in the seedling feeding direction, that is, in the front-back direction of the seedling placing table 4, whereby the scraping amount of the seedlings addressed to the unit plant can be freely adjusted. Further, the adjusting tool 26 is connected to the swinging fulcrum shaft 19 of the actuating body 20 through a single connecting tool C composed of a wire, a rod or the like so as to regulate the returning position of the actuating body 20, and the seedling scraping device. When the scraping amount of the seedlings is adjusted by operating the amount adjusting tool 26, the feeding amount of the seedlings of each row is adjusted simultaneously and uniformly according to the scraping amount of the seedlings.

A concrete configuration example thereof is shown in FIGS. 5 and 6 and the like. In the figure, 29 is an arm fixed to the swing fulcrum shaft 19 at a position approximately in the middle of the inwardly-directed actuating body 20 and the arm 25, and this arm 29 is an angled rod 3
0 is pivotally connected to one end through a pin 31, and the other end of the rod 30 is a long hole 30a and a pin 3 loosely fitted in the long hole 30a.
It is pivotally connected to the L-shaped link plate 33 through 2. Reference numeral 34 denotes a rotation fulcrum of the link plate 33, which is mounted on the back surface of the seedling placing table 4. 35 is a link plate 33
The return spring 36 is a wire connecting the link plate 33 and the seedling scraping amount adjusting tool 26. Reference numeral 37 in the drawing denotes a return spring for the levers 12a, 12b, 12c.

Now, when the seedling scraping amount adjusting tool 26 is tilted in the direction of arrow C in FIG. 4 (direction in which the seedling scraping amount decreases), the rod 30 is pulled via the wire 36 and the link plate 33, and thus the arm 29. Rotates in the clockwise direction, whereby the swing fulcrum shaft 19 and the actuating bodies 20, 20 are rotationally displaced by a predetermined angle. Therefore, the rotating body 22 of the actuating body 20, 20
The contact start end with respect to is changed and the swinging stroke of the variable bodies 20, 20 is shortened, and as a result, the feeding amount of seedlings is reduced.

By the way, during operation, when the planting clutch is disengaged as necessary (for example, when only planting a row that does not need to be planted for row alignment, the planting of the row that does not need to be planted is stopped, etc.) Since the seedlings can be stopped, it is possible to reliably prevent the adverse effects such as damage and collapse of the seedbed soil, buckling of the seedlings, and changes in the seedling density due to compression due to the unnecessary feeding action of the seedlings. Moreover, since a part of the seedling feeding stop mechanism D is used so that the seedling feeding mechanism B can be switched between the feeding operating state and the non-operating state even if the actuating body 20 rotates, the switching mechanism is There is no waste of separately providing, the structure is simple, and there is no particular increase in cost.

Further, when the planting rod stop lever 15 of the planting-unnecessary line is operated to the clutch disengagement side, the corresponding planting rod 5 is stopped, and at the same time, the seedling feeding stop mechanism D automatically stops the seedling feeding action of the line. The stop of the planting rod 5 and the stop of the seedling feeding can be performed by a single operation of one lever 15, and the operation is easy, and there is no fear of making an operation error such as forgetting to operate one of the levers. You can

Effect of the Invention As described above, the present invention is a seedling feeding mechanism that operates intermittently in response to an actuator that is forced to oscillate by contacting a longitudinal feed driver at the left and right reciprocating end of the seedling table. In the multi-row planting rice transplanter, which is configured to be attached to the seedling mounting table, and the scraping amount of the seedlings to be planted by the planting rod that is to be planted can be adjusted by operating the seedling scraping amount adjusting tool. Left and right of the feeding mechanism 2
While fixing the individual actuating bodies to a single swinging fulcrum shaft rotatably laid across multiple rows on the seedling mounting table, when the actuating bodies are rotated with respect to the seedling feeding stop mechanism that operates when the planting clutch is disengaged. In the above, the seedling feeding mechanism is switchably linked to the feeding operating state and the non-operating state, and the swinging fulcrum shaft is regulated by the single connecting tool so as to regulate the return position of the operating body. Since it was linked to the tool, when adjusting the scraping amount of the seedling by operating the seedling scraping amount adjustment tool, in response to this, one swinging fulcrum shaft rotatably laid across multiple rows on the seedling mounting table, And, the two left and right actuating members fixed to the shaft are integrally displaced by the same angle, so that the seedling feeding amount is adjusted, so that the density of the seedlings can be kept constant and the compression amount of the mat seedlings can be kept constant. The variation in the number of plantings due to the difference disappears, and the seedling feeding amount of each row corresponds to the seedling scraping amount. Since is uniformly adjusted Te, uneven seedlings out amount between each row mutually eliminates planting accuracy is further improved.

In addition, during the planting work, when the planting clutch is disengaged as necessary, the feeding action of the seedlings can also be stopped, so that unnecessary feeding action of the seedlings may damage or collapse the seedbed soil, It is possible to prevent adverse effects such as buckling and changes in seedling density due to compression.

Moreover, since a part of the seedling feeding stop mechanism is used to connect the seedling feeding mechanism to the feeding operating state and the non-operating state even if the actuating body rotates, a switching mechanism is separately provided. There is no waste, the structure is simple, and there is no particular cost increase.

In addition, the planting rod can be stopped and the seedlings can be stopped with a single operation of one lever, which is easy to operate and eliminates the risk of operating mistakes such as forgetting to operate one. It has extremely useful practical effects such as being able to.

[Brief description of drawings]

FIG. 1 is a side view of a planting section in a rice transplanter equipped with the present invention, FIG. 2 is a side view of a seedling feeding mechanism, FIG. 3 is a rear view of the same, and FIG. 4 is a rear side of a seedling mounting table. Rear view showing the structure, No. 5
FIG. 6 is a side view of a main part, FIG. 6 is a rear view of the same as above, and FIG. 7 is a side view showing a structure for connecting end portions of a swing fulcrum shaft. In the figure, 4 is a seedling stand, 5, 5 ... are planting rods, 19 is a swinging fulcrum shaft, 20 is an actuating body, 22 is a rotating body, 26 is a seedling scraping amount adjusting tool, B is a seedling feeding mechanism, C is a connecting tool, and D is a seedling feeding stop mechanism.

Claims (1)

[Scope of utility model registration request] 1. A seedling table is equipped with a seedling feeding mechanism that operates intermittently in response to an actuating member that is forcibly rocked by contacting a longitudinal feed driving body on the side of the left and right reciprocating movement ends of the seedling table. In addition, in the multi-row planting rice transplanter configured to freely adjust the scraping amount of the unit planting stock to be scraped off by the planting rod by operating the seedling scraping amount adjusting tool, two left and right sides of the above-mentioned seedling feeding mechanism The actuator is fixed to a single swinging fulcrum shaft that is rotatably laid across multiple rows on the seedling mounting table, and when the actuator is rotated with respect to the seedling feeding stop mechanism that operates when the planting clutch is disengaged. The seedling scraping amount adjusting tool is connected to the seedling feeding mechanism so as to be switchable between a feeding operating state and a non-operating state, and the swinging fulcrum shaft can regulate the return position of the operating body through a single connecting tool. Seedling feeding device in rice transplanter characterized by being connected to.