JPH0436579Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a seedling feeding device in a rice transplanter.

(Prior art and problems) The seedling stand of a rice transplanter is generally equipped with a seedling feeding mechanism consisting of a belt, star foil, rollers, etc., and the planting rod is moved from the left and right end of the seedling stand to the pine seedlings. Every time a plant at the side end is scraped, the operating body of the seedling feeding mechanism comes into contact with the rotating body and is forcibly swung.
This allows the pine seedlings on the seedling platform to be fed out toward the seedling take-out port. However, in a structure in which the number of seedlings to be planted can be adjusted by changing the scraping width in the front and rear directions in the direction in which the seedlings are fed out, problems occur in the relationship between the amount of seedlings fed out and the amount of scraped seedlings. In other words, if the amount of seedling feeding cannot be adjusted in response to changes in the amount of scraping, the amount of compression of the front end of the pine seedlings will differ due to overfeeding, etc., resulting in a difference in seedling density, making it impossible to plant the appropriate number of seedlings. It is. Conventionally, as a means to solve this inconvenience, a stopper is provided to restrict the return position of the operating body of the seedling feeding mechanism, and the stopper is wired to the operating body that moves back and forth in conjunction with a scraping amount adjustment handle provided in the planting section. Although it has been proposed to connect the two via a , the structure is complicated and the practicality is low.

(Means for Solving the Problems) Therefore, the present invention has been developed by attaching to the seedling stand a seedling feeding mechanism that operates intermittently in response to an actuating body that comes into contact with a driving body and is forced to swing. , a rice transplanter configured such that the scraping width in the direction of feeding out the seedlings of the unit planting stock scraped by the planting rod can be freely adjusted by operating a seedling scraping amount adjustment operation member, wherein the actuating body of the seedling feeding mechanism is In order to regulate the return position of the operating body, it was connected to a seedling scraping amount adjusting operation member via a connecting device such as a wire or rod, and the amount of seedlings scraped was adjusted by operating the seedling scraping amount adjusting operation member. At this time, the amount of seedlings fed out changes according to the amount of seedlings scraped, and the amount of seedlings fed out is always maintained at an appropriate amount. By connecting the planting rod stop lever through the connecting member, which has a flexible mechanism in which the actuating body and the actuating metal are disengaged when the planting clutch is disengaged, it is possible to scrape the seedlings. When the amount of pine seedlings is reduced, the amount of seedlings fed out also becomes smaller, so the density of seedlings can be kept constant regardless of changes in the amount of scraping, which eliminates variations in the number of pine seedlings planted due to differences in the amount of pine seedling compression. It is an object of the present invention to provide a seedling feeding device for a rice transplanter that can eliminate the need for a rice transplanter, can be easily operated, has a simple structure, and can be constructed at low cost.

(Example) To explain the configuration of the present invention with reference to an example shown in the drawings, A is attached to the traveling body of a rice transplanter so as to be movable up and down via a three-point link mechanism or the like (not shown). In the planting section, below the drive case 1 there is a float 2 for sliding on the rice field, and above the drive case 1 there is a seedling stand 3 on which pine seedlings (not shown) are placed, which has a left and right reciprocating drive mechanism. It is installed so that it can freely reciprocate from side to side through the seedling platform 4 and is installed in a high-frontal and low-back shape, and a planting rod 5 is provided at the rear of the seedling platform 3 so as to be movable up and down. Rollers 6 and 7 are rotatably supported on the rear surface of the seedling table 3 on the side near the seedling take-out opening via shafts 6a and 7a supported by brackets 6' and 7'. A belt 8 with protrusions for feeding out seedlings is wound thereon, and one roller 6 is integrally provided with a ratchet wheel 9. Note that the shafts 6a and 7a have two threads or one thread.
It is divided into articles.

A T-shaped operating fitting 10 having a ratchet pawl 10a that engages with the teeth of the ratchet wheel 9 is rotatably mounted on the shaft 6a, and the operating fitting 10 and an operating body to be described later are in one-way engagement. It is possible to
And when the planting clutch is in the disengaged state, the actuating body and actuating metal fitting 1
The planting rod stop lever 12 is connected via a connecting member 11 of a planting rod stop lever 12 having a flexible mechanism (elongated hole) 11a that allows the interlocking of the planting lever 12 to be released. That is, the actuation fitting 10 is connected to one end of a connecting member 11 having a flexible mechanism (elongated hole) 11a via a pin 11b loosely fitted into the flexible mechanism (elongated hole) 11a of the connecting member 11. The other end of the member 11 is connected via a rod 13 to a planting rod stop lever 12 for stopping the planting rod and stopping the feeding of seedlings. 14 is a wire for stopping the planting lever, the tip of which is fixed to the planting clutch stop operation arm 15, and when the planting lever stop lever 12 is tilted upward, that is, to the planting clutch disengaged side, planting is started. The seedling dispensing action stops at the same time as the rod 5 stops (even if the operating body 20 is actuated by the rotation of the drive body 24, the lever 11 and the long hole 11a are moved rearward in the seedling dispensing direction by operating the lever 12). Therefore, the pin protruding from the actuating body (to be described later) simply moves in the elongated hole 11a, the T-shaped actuating fitting 10 does not operate, and the feeding of the seedlings is stopped.)
Therefore, when row planting is done, the planting rods of the rows that are wrapped during the planting process immediately before the final planting process are carried out. (the conventional method of stopping operation of the operation of the clutch and stopping only the planting of the relevant row), by cutting the planting clutch for each row or two of the row that does not need to be planted, the planting clutch of the row that does not need to be planted is cut in conjunction with the cutting operation of the clutch. Since the feeding action of the seedlings automatically stops, it is possible to prevent the seedbed soil from buckling or being damaged due to sending too many seedlings, thereby further improving the accuracy of seedling planting. 16, 17, and 18 are return springs, and 19 is a guide for the planting lever stop lever 12. Reference numeral 20 denotes a bracket 21 on the back side of the seedling platform 3 and a fulcrum pin 22 integrated over the entire width of the seedling platform 3.
A pin 20a protruding from the middle in the longitudinal direction of the actuating body 20 is loosely fitted into the elongated hole 11a, and the actuating body 20
The roller 23, which is pivotally supported at the swinging tip of the drive case 1, is located in a position facing the rotation locus a of the drive body 24 that projects outward from the drive case 1 when viewed from the side. This drive body 24 is constantly rotated counterclockwise in FIG. 1 by the power transmission system inside the drive case 1, and when the seedling platform 3 comes to the end of left and right movement, the planting rod 5 picks up the last plant in the movement. After the drive body 24 hits the roller 23 and pushes the roller 23 up out of the locus of the drive body 24, the actuating body 20 moves from the state shown by the solid line in FIG. As a result, the connecting member 11 is pulled, and the T-shaped operating fitting 10 rotates clockwise around the shaft 6a, rotating the ratchet wheel 9 and roller 6 in the same direction by a predetermined pitch. As the roller 6 rotates, the protruding belt 8 rotates in the direction of the arrow C, and the pine seedlings on the seedling platform 3 are fed out at a predetermined pitch toward the seedling take-out port. These components constitute a seedling feeding mechanism B. In addition, the connecting member 1
1 is slidably fitted to the rod 13 as shown in the figure, and even if the linking member 11 moves during seedling delivery operation, the rod 13 does not move and remains stationary.

An apron 25 receives the front edge of the pine seedling placed on the seedling stand 3, and a pin 26 projecting from the back side is fixed to the apron 25. Reference numeral 27 denotes a seedling scraping amount adjusting operation member (lever) having a substantially L-shaped front view and having a pivot point 28 near the pin 26;
The pin 26 is loosely fitted into 7'a,
When the lever 27 is tilted in two directions, the apron 25 moves forward in the seedling delivery direction (y direction), and when the lever 27 is tilted in the e direction, the apron 25 moves backward in the x direction. It is constructed so that the amount of seedlings to be scraped can be freely adjusted.

By the way, the lever 27 is connected to the operating body 20 of the seedling feeding mechanism B via a wire 29.
The return position of the actuating body 20 is regulated by the tilting operation of the lever 27. 30 is a guide plate for the lever 27;
A lever 27 is provided on one side of the guide hole 31 of the guide plate 30.
A large number of positioning engagement grooves (not shown) are provided in which the integral protrusions 27b are removably engaged. The lever 27, which is positioned and engaged in the guide hole 31 of the guide plate 30, is connected to the connector 29 of the actuating body 20 on the back side of the guide plate 30.
0 also serves as a protective cover for the lever 27 and the connector 20 to facilitate operation.

In the figure, reference numeral 32 denotes seedling take-out ports formed with notches at regular intervals in the longitudinal direction of the apron 25, and a plurality of planting rods 5 are arranged in parallel corresponding to the seedling take-out ports 32. Note that the pin 26 fitting portion 2 of the lever 27
A plurality of pin fitting portions 27c are arranged at regular intervals in the width direction, and each pin fitting portion 27c is integrally connected by a rod 33. By the way, what connects the lever 27 and the actuating body 20 is not limited to a wire, but may be a rod or the like, and also in the seedling feeding mechanism B, the device that performs the seedling feeding function is the belt 8 shown in the above-mentioned embodiment. Alternatively, a star wheel or a roller with protrusions may be used. Furthermore, the amount of seedlings to be scraped is adjusted by moving the apron 25 back and forth in the direction of feeding out the seedlings in this embodiment, but it is possible to adjust the amount of seedlings to be scraped per plant. It may be of any type. For example, a method in which the apron is fixed and the planting rod is moved back and forth, or a method in which the entire seedling platform is moved back and forth is also applicable. Further, in this embodiment, the actuating body 20 and the T-shaped actuating fitting 10 are separate bodies, but the actuating body 2
The wire 29 may be directly connected to a conventional type having only the T-shaped actuating fitting 10 without the zero. Further, the lever 27 for adjusting the scraping amount may be provided around the driver's seat of the traveling aircraft.

In the figure, 34 is an outer, and 35 is an outer stopper plate. Reference numeral 36 denotes an input shaft, through which power from the traveling machine is introduced into the drive case 1 and transmitted to each part of the planting section A.

In the configuration as described above, when the lever 27 for adjusting the scraping amount is tilted from the intermediate state shown in FIG. 2 in the direction of arrow H as shown in FIG. Since the apron 25 is pushed up backward, the apron 25 moves in the x direction and the amount of scraping becomes smaller. Further, the wire 29 is pulled by the tilting of the lever 27, and the actuating body 20 is rotated by a predetermined angle in the direction of arrow A about the fulcrum pin 22, and is displaced to the state shown by the solid line. Therefore, when the lever 27 is engaged and fixed in the inclined state shown in the figure, the wire 2
9 restricts the return position of the actuating body 20, so the operating range of the actuating body 20 becomes small, and the amount of seedling delivery also becomes small.

Further, when the lever 27 is tilted in two directions, the lever 27 moves in directions opposite to those mentioned above, so that the amount of seedlings to be scraped increases and the amount of seedlings to be fed out also increases. In this way, in this invention, the amount of seedling feeding is automatically adjusted according to the change in the amount of seedling scraping, so the optimal seedling density is always maintained at a constant level regardless of the amount of seedling scraping. A feeding action can be ensured, which eliminates variations in the number of scraped plants due to non-uniform density, and improves planting accuracy.

In addition, the actuating body 20 is connected to the lever 2 for adjusting the amount of scraping.
7 through a connector such as a wire, the lever ratio can be freely selected, the operation is smooth, and the position of the actuating body 20 is reliably regulated.

(Effects) As described above, the present invention is equipped with a seedling feeding mechanism that operates intermittently in response to an actuating body that contacts a driving body and is forcibly swung, and a planting rod. In a rice transplanter configured such that the scraping width in the direction of feeding out the seedlings of the unit-planted seedlings scraped by can be freely adjusted by operating a seedling scraping amount adjustment operation member,
The actuating body of the seedling feeding mechanism is connected to a seedling scraping amount adjustment operating member via a connecting device such as a wire or rod in order to regulate the return position of the actuating body, and by operating the seedling scraping amount adjusting operating member. When the amount of seedlings to be scraped is adjusted, the amount of seedlings to be fed out changes according to the amount of seedlings to be scraped, and the amount of seedlings to be fed out is always maintained at an appropriate amount. The planting lever stop lever is connected via a connecting member of the planting lever stop lever, which has a flexible mechanism that can be engaged in one direction with the operating fitting of the planting lever and disengages the actuating member and the operating fitting when the planting clutch is disengaged. Therefore, the amount of seedling feeding can be automatically adjusted to the appropriate state according to changes in the amount of seedling scraping, and the optimum density of seedlings can be maintained at a constant level regardless of the amount of seedling scraping. A seedling feeding action can be ensured, which eliminates variations in the number of scraped plants due to non-uniform density, making it possible to improve planting accuracy. In addition, since the operating body is linked to the seedling scraping amount adjustment operating member via a connecting device such as a wire or rod, the lever length and the fixing position of the connecting device can be adjusted arbitrarily by constructing the operating member with a lever. The lever ratio can be freely selected, the operation is smooth, and the position of the actuating body can be controlled reliably.The structure and operation are simple, there is little chance of failure, and it can be manufactured at low cost. , Row stopping performed when planting along the ridge (in order to operate all the planting rods in the final planting step at the ridge and plant all the rows, only the planting rods of the rows to be wrapped are operated in the last step of planting the rows) By cutting the planting clutch of a row that does not need to be planted), it is possible to automatically stop the feeding action of seedlings in the row that does not need to be planted in conjunction with the cutting operation of the planting clutch. Therefore, it is possible to prevent the seedbed soil from buckling or being damaged due to over-feeding of seedlings, and the accuracy of planting seedlings can be further improved.

[Brief explanation of the drawing]

Fig. 1 is a side view of the planting section of the rice transplanter equipped with the present invention, Figs. 2 and 3 are operation explanatory diagrams showing the main parts enlarged, and Fig. 4 is the stopping of the planting rod and the feeding of seedlings. It is an explanatory view of the operation of the stop mechanism. In the figure, 3 is a seedling stand, 5 is a planting rod, 10 is an operating fitting for the seedling feeding mechanism, 11 is a connecting member, 11a is a flexible mechanism, 12 is a planting rod stop lever, 20 is an operating body,
24 is a drive body, 27 is a seedling scraping amount adjustment member,
29 is a connecting device such as a wire or rod, and B is a seedling feeding mechanism.

Claims (1)

[Scope of utility model registration request] A seedling feeding mechanism that operates intermittently in response to an actuating body that contacts the driving body and is forcibly oscillated is attached to the seedling stand, and the seedlings are placed in unit planting stocks that are scraped off with a planting rod. In a rice transplanter in which the scraping width in the direction of feeding out seedlings can be freely adjusted by operating a seedling scraping amount adjusting operation member, the actuating body of the seedling feeding mechanism is equipped with a wire, rod, etc. to regulate the return position of the actuating body. When the amount of seedlings to be scraped is adjusted by operating the seedling scraping amount adjusting operation member, the amount of seedlings to be fed out will be adjusted according to the amount of seedlings to be scraped. In addition, the operating body and the operating metal fitting of the seedling dispensing mechanism can be engaged in one direction, and when the planting clutch is disengaged, the operating body and the operating member A seedling feeding device for a rice transplanter, characterized in that the seedling feeding device is connected via a connecting member of a planting rod stop lever, which has a flexible mechanism in which the interlocking of the metal fittings is released.