JPH062502Y2 - Longitudinal feeder for planting seedlings in walking type rice transplanter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vertical feeding device for planting seedlings in a walk-behind rice transplanter that operates for planting seedlings.

[Problems to be Solved by Conventional Techniques and Inventions] Generally, in the planting section of this type of walk-type rice transplanter, the planting seedlings scraped by the planting operation of the planting claw are moved laterally by the seedling table. There is provided a vertical feed device adapted to carry out vertical feed by intermittent feed operation of a vertical feed member which is timed to reach the end. However, conventionally, when the seedling table reaches the lateral movement end, this vertical feed device pushes up the operating arm on the vertical feed body side by the vertical feed claw facing the vertical feed body to move the vertical feed body vertically. Since the seedling table was pushed up by this upward pushing force, the seedling seedlings were scraped and moved upward, and the number of planted seedlings was uneven. There is an inconvenience. For this reason, in order to prevent the seedling mounting table from being lifted, for example, the rail and the slide piece for laterally moving the seedling mounting table have to have a special slide engagement structure so as to prevent the lifting of the seedling mounting table. However, there is a drawback that the structure becomes complicated.

Therefore, as shown in Japanese Utility Model Publication No. 54-39372, the operating arm and the vertical feed claw are configured to perform the vertical feeding operation of the planted seedlings based on the vertical feed claw pushing down the operating arm. Although there is also one, in this one, the moving direction of the pushed down operation arm is a direction to move the planted seedlings to the inclined upper hand side on the placement surface of the seedling placement table,
As a result, when a mechanism for vertically feeding by pushing down the operating arm is adopted, it is necessary to perform vertical feeding in association with the return operation of the operating arm, which makes the structure complicated and allows the operating arm to return. It is necessary to increase the urging force of the return ammunition for adding a load for vertical feed, and by doing so, the vertical feed force of the vertical feed claw is also greater than this urging force. However, there is a new problem that the size becomes larger than necessary.

[Means for Solving the Problem] The present invention was devised with the object of providing a vertical feeding device for planting seedlings in a walking type rice transplanter capable of eliminating these drawbacks in view of the above circumstances. In the rear part of the machine body, the seedling placing surface is inclined forward and backward so that the seedling placing surface faces forward, and a seedling holder integrally provided forward with a seedling holder is provided at the inclined lower end portion. In front of the lower part of the seedling mounting table, a planting claw for scraping and planting the planted seedlings mounted on the seedling mounting table is provided, while the rear side of the seedling mounting table has the seedling mounting table horizontal. In a walking type rice transplanter provided with a vertical feed body for vertically feeding the planted seedlings on the seedling mounting table at the timing when the moving end is reached, interlockingly connected to the vertical feed body, A link rod that moves the vertical feed body vertically by moving is provided so as to project forward from the seedling mounting surface of the seedling mounting table, while the front The middle portion of the operating arm having a forearm portion projecting toward one side, a rear arm portion that projects rearward on the inclined upper hand side of the seedling mounting table, and swings forward and upward based on the movement of the forearm portion, The seedling holder is swingably supported, the rear arm of the operating arm is swingably connected to the front end of the link rod, and the seedling mounting table reaches the lateral movement end in front of the operating arm. It is characterized in that a vertical feed claw for contacting the forearm of the operating arm from above and pushing down the forearm to perform the vertical feed operation of the vertical feed body is provided. is there.

With this configuration, the present invention can prevent the seedling mounting table from being lifted, while simplifying the transmission case structure and improving the body balance, and further, supporting member for the operating arm. The seedling holder is also used to reduce the number of parts and simplify the structure.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is a single-wheeled rice transplanter, and the rice transplanter 1 includes an engine 2, a transmission 3,
A planting part 5 having a front low rear high seedling mount 4, a handle 6,
The left and right side floats 7, the traveling wheels 8, and the chain case 9 arranged on the left side of the traveling wheels 8 are each configured. On the other hand, 10 is a machine body frame that connects the engine section side on the front side of the machine body and the working section 5 side on the rear side, and a chain transmission mechanism to the planting section 5 is incorporated in the machine body frame.

In addition, the gear case 1 connected to the machine frame 10
1, a working shaft 12 rotatably supported by the chain transmission mechanism is rotatably supported, and a pair of planting drive cases 13 are provided on both left and right rear sides of the traveling wheel 8. Power is supplied from the operating shaft 12 to the planting claws 14 provided outside the planting drive case 13 by chain transmission to perform planting operation. Further, a transmission case 15a is provided on one end side of the gear case 11, and the operating shaft 1 is provided via a chain transmission which is internally provided in the transmission case 15a.
Power is transmitted from 2 to a lateral feed shaft 15 for lateral feeding of the seedling placing table arranged in front of the seedling placing table 4. The horizontal feed piece 16 is engaged with the screw groove of the horizontal feed shaft 15, and the horizontal feed piece 15 is guided in the screw groove by rotating the horizontal feed piece 15 in conjunction with the driving of the operating shaft 12. The lateral feed piece 16 is connected to the seedling placing table 4 via a connecting frame 17, and the seedling placing table 4 is integrated by following the lateral feeding of the lateral feeding piece 16. The left and right reciprocating lateral feed operation is performed.

Further, a vertical feed pawl 18 is provided on the other end side of the operating shaft 12 so as to rotate integrally with the operating shaft 12. On the other hand, a seedling holder 19 is provided at the lower end of the slant of the seedling placing table 4, and the operating arms 20 swing between the middle portion of the seedling holder 19 and the end portion on the side of the vertical feed claw 18 with the support shaft 20b as a fulcrum. It is provided for dynamic displacement. The operating arm 20 is formed of a substantially V-shaped plate member having a forearm portion 20c protruding forward and a rear arm portion 20d protruding rearward on the inclined upper side of the seedling placing table 4. Moreover, the rear arm portion 20c
Is swingably connected to the front end of the link rod 21, and the operating arm 20 and the vertical feed claw 18 are connected to each other by the seedling table 4.
When the vertical feed claw 18 comes into contact with the pin 20a provided on the front end portion 20c of the operating arm from above and is pushed downward at the same timing as when the moving end of the horizontal movement is reached, The end portion 20d is set so as to swing toward the upper front to perform the displacement operation of the link rod 21. Moreover, the other end of the link rod 21 bypasses the lateral side of the seedling placing table 4 to reach the rear surface side of the seedling placing table 4, and is integrally connected to the leg portions of the substantially V-shaped actuating body 22. Has been done.
Further, a vertical feed shaft 24, on which a vertical feed body 23 is integrally supported, is rotatably pierced through the actuation body 22, and a ratchet gear 25 is integrally supported on the vertical feed shaft 24. The actuating body 22 is provided with a ratchet pawl 26 that engages with the ratchet gear 25 in only one direction (the direction in which the planted seedlings are vertically fed) and disengages in the opposite direction. Then, as described above, the pin 20a of the operating arm 20 causes the vertical feed pawl 18 to move.
When the actuating body 22 is swung in the direction of the arrow A when it is pushed downward by the ratchet pawl 26, the ratchet pawl 26 engages with the ratchet gear 25 to rotate the vertical feed shaft 24. Vertical feed body 2 provided on the shaft 24
7 is rotated by a predetermined pitch to vertically feed the planted seedlings placed on the seedling placing table 4.

In addition, 28 and 28a are return ammunition provided in the ratchet mechanism, 29 is a lower rail provided in the seedling mounting table 4, and 30
Is a slide piece that engages with the lower rail 29.

In the embodiment of the present invention configured as described above, the seedling planting work is performed on the paddy field by the seedling planting operation of the planting claws 14 in time with the traveling of the traveling wheels 8. In this case, The vertical feed claws 18 act in the direction of pushing down the operating arm 20 to vertically feed the planted seedlings. That is, the vertical feed claw 18 opposes the pin 20a of the actuating arm 20 and pushes it downwards in synchronism with the timing when the seedling placing table 4 reaches the horizontal transfer end, whereby the vertical feed member 27 is pushed downward as described above. Rotates to perform the vertical feeding action of the planted seedlings. The vertical feeding claw 18 that performs the vertical feeding action is
Since the vertical feeding is performed by acting on the operating arm 20 so as to push it downward rather than upward as in the conventional case, the seedling table 4 is moved by the vertical feeding pawl 18 at the time of this vertical feeding. You will receive a force that is pressed down. Therefore, the seedling placing table 4 never rises up as in the conventional case, and therefore, the engaging structure of the lower rail 29 and the slide piece 30 prevents the seedling placing table 4 from being lifted upward. There is no need to give special consideration to the above, and therefore the structure can be remarkably simplified, and since the seedling table 4 does not rise, the planting claws 14 scrape off the planted seedlings. Since the number of plants is constant, the planting accuracy will be greatly improved.

Moreover, since the vertical feed claw 18 and the operating arm 20 are connected to each other in front of the seedling placing table 4, it is necessary to extend the gear case 11 for driving the vertical feed claw 20 especially to the rear surface of the seedling placing table 4. Therefore, the gear case 11 can be reduced in size and weight, and the structure can be simplified. Therefore, various members provided on the rear surface side of the seedling mounting table 4 can be mounted on the front surface side of the seedling mounting table 4 as much as possible. It is possible to dispose it, and therefore, the front-rear balance of the machine body can be improved, the rear surface of the seedling mounting table 4 can be made clean, and further, the contact state between the vertical feed claw 18 and the operating arm 20 can be achieved. Can be made easier to see, and the work of setting the left and right end portions of the seedling placing table 4 at the time of seedling supply can be facilitated.

Moreover, the longitudinal feeding operation of the planted seedlings is based on the fact that the operating arm rear arm portion 20d protruding rearward on the inclined upper side of the seedling mounting surface moves forward and upward as the forearm portion 20c is pushed down. Vertical movement of the planted seedlings can be directly performed by moving upward and moving forward, and as a result, when performing vertical feeding based on the downward pushing operation of the vertical feeding claws 18, Thus, it is necessary to increase the urging force of the return ammunition 28 and to correspondingly increase the pushing down force of the vertical feed claw 18 as in the case where the return movement of the operating arm 20 feeds vertically. Nothing is needed, and the operating force of the return ammunition 28 and the vertical feed claw 18 having the same urging force as that of the vertical feed directly by pushing up the operating arm 20 can be used. It can be fed vertically by pushing down the pawl 18. While, the size and weight can be achieved that with simplified structure.

Further, since the operating arm 20 is pivotally supported on the existing seedling holder 19 provided at the lower end of the tilt of the seedling mounting table 4,
Although the operating arm 20 is arranged on the front side of the seedling mounting table 4, the seedling holder 19 can be used also as the mounting member of the operating arm 20 without additionally adding a dedicated mounting member. As a result, the number of parts is increased. Can be reduced and the structure can be simplified.

[Effects] In summary, since the present invention is configured as described above, the vertical feeding pawl for vertically feeding the planted seedling and the operating arm linked to the vertical feeding body are connected to the seedling table. There is no need to extend the transmission case for power transmission to the vertical feed claw, which is arranged in the front, to the rear side of the seedling table, and the structure can be simplified and the size and weight can be reduced.
The vertical feeding operation of the planted seedlings is performed in the front of the seedling mounting table by the vertical feeding claws pushing down the forearm portion of the operating arm so that the rear arm portion moves forward and upward.
Therefore, during the vertical feeding operation, the seedling placing table receives a downward pushing force, and it is possible to reliably prevent the seedling placing table from being lifted upward.

Moreover, the vertical feeding operation of this planted seedling is, as described above,
The rear arm of the actuating arm that protrudes rearward on the inclined upper side of the seedling mounting surface can be directly moved by moving forward and upward as the forearm is pushed down. When performing a vertical feed based on the push-down operation to the, the urging force of the return ammunition is increased and the vertical feed is performed in response to this, as in the conventional type in which the return movement of the operating arm feeds vertically. It is no longer necessary to further increase the pushing force of the claw, and the same return ammunition and vertical feed claw actuating force as the one that vertically feeds directly by pushing up the operating arm may be used. As a result, the vertical feed can be performed by pushing down the vertical feed claw, but the structure can be simplified and the size and weight can be reduced.

In addition, the actuating arm is to be pivotally supported by effectively utilizing the existing seedling holder provided at the inclined lower end of the seedling table, and the actuating arm is arranged on the front side of the seedling table. However, there is no need to provide a dedicated mounting member, and as a result, the seedling holder can also be used as a mounting member for the operating arm, and the number of parts can be reduced and the structure can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of a vertical feeding device for planting seedlings of a walking type rice transplanter according to the present invention, wherein FIG. 1 is a side view of the entire rice transplanter, and FIG. The figure is a plan view of the same as above, FIG. 3 is a side view of a main part of the vertical feed mechanism, FIG. 4 is a developed view of the vertical feed mechanism, and FIG. 5 is a developed view of a power transmission system. In the figure, 1 is a rice transplanter, 4 is a seedling stand, 5 is a planting section, 11 is a gear case, 14 is a planting claw, 18 is a vertical feed claw, 19 is a seedling holder, 20 is an operating arm, and 20c is a forearm. , 20d are rear arm portions.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiromasa Kajitani 667 Isuyacho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (56) Reference JP-A-60-9414 (JP, A) Showa 60-67029 (JP, U) Showa 54-39372 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A seedling platform on the rear of the machine body, in which the seedling mounting surface is inclined forward and backward and high so as to face forward, and the seedling holder is integrally provided forward at the lower end of the slope. In front of the lower part of the seedling mounting table, a planting claw for scraping and planting the planted seedlings mounted on the seedling mounting table is provided, while the rear side of the seedling mounting table has the seedling mounting table horizontal. In a walking type rice transplanter provided with a vertical feed body for vertically feeding the planted seedlings on the seedling mounting table at the timing when the moving end is reached, interlockingly connected to the vertical feed body, A link rod for moving the vertical feed body by movement is provided so as to project forward of the seedling mounting surface of the seedling mounting table, while the forearm portion projecting forward and the inclined upper side rear of the seedling mounting table rearward. An intermediate portion of an operating arm having a rear arm portion which projects toward the front arm portion and swings forward and upward based on the downward movement of the forearm portion is swingably supported by the seedling holder. The rear arm of the actuating arm is swingably connected to the front end of the link rod, and the forearm of the actuating arm is provided in front of the actuating arm at the timing when the seedling table reaches the lateral movement end. A vertical feeding device for planting seedlings in a walk-type rice transplanter, which is provided with a vertical feed claw that comes into contact with the upper part from above and pushes down the forearm to perform the vertical feed operation of the vertical feed body.