JP2510442Y2 - Vertical seedling feeder for rice transplanter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a seedling vertical feeding device in a rice transplanter, and more specifically, a passive lever of the vertical feeding mechanism is provided on the left or right end of the seedling mounting table. The present invention relates to a seedling vertical feeding device in a rice transplanter in which a vertical feeding mechanism is driven by being brought into contact with a constantly rotating feeding arm when moved, to vertically feed a predetermined amount of seedlings.

[Conventional technology]

Conventionally, this type of seedling vertical feeding device forms a passive lever of a vertical feeding mechanism provided at the center of the rear surface of the seedling mounting table in a U-shaped plate, and a pair of left and right outer portions on the front end side via a connecting shaft. The roller is pivotally supported, and when the seedling stand moves to either the left or right end, the feeding arm equipped in the drive case in a constantly rotating state is brought into contact with the roller to vertically feed the mat seedlings. Was.

However, by forming the passive lever on the U-shaped plate,
In the case where the roller is pivotally supported on the left and right outer parts of the front end side, when the U-shaped part of the passive lever is distributed and set to the left and right of the seedling mounting table at the time of assembly, the positioning is defective, When some kind of external force acts laterally on the seedling mounting table when the seedling mounting table moves to one of the left and right ends, or when the lateral feed mechanism is extremely abnormally worn, the feeding arm Does not contact the roller of the passive lever but contacts the front end of the U-shaped plate of the passive lever, or enters the inside of the U-shaped plate to lock the feeding arm, and as a result, the feeding arm and There was a problem that the passive lever could not be broken and the seedling could not be fed vertically.

[Problems to be solved by the present invention]

The present invention has been made in view of the above situation to solve the conventional problems, and the purpose thereof is to provide a roller at the tip of the feeding arm and to provide a passive lever of the vertical feeding mechanism. Provides a plate with which the roller abuts, and when the seedling mounting table moves to either the left or right end, the roller of the feeding arm abuts the plate to effectively actuate the passive lever. The direction of contact with the plate acts in a direction perpendicular to the contact surface of the plate, so that the vertical feed mechanism can be driven reasonably and reliably, and the contact part is formed of a flat plate. The contact surface area was enlarged, and therefore, even when the passive lever was distributed and set to the left and right of the seedling mounting table during assembly, even if the positioning was poor, the seedling mounting table moved to either the left or right end. When , Even if some external force acts in the lateral direction of the seedling mounting table, or even if the lateral feed mechanism experiences extreme abnormal wear, the feeding arm securely contacts the plate of the passive lever and feeds vertically. It is an object of the present invention to provide a seedling vertical feeding device for a rice transplanter that can drive the mechanism, prevent damage to the feeding arm and the passive lever, and eliminate the inability to vertically feed the seedlings.

[Means for solving the problem]

In order to achieve the above-mentioned object, the technical means adopted by the present invention is to provide a seedling vertical feed mechanism on a seedling mounting table which reciprocates left and right with respect to a drive case, and a passive lever of the vertical feeding mechanism is provided on the seedling mounting table. In the rice transplanter configured to drive the vertical feed mechanism by abutting against the feeding arm equipped in the drive case in a constantly rotating state when is moved to one of the left and right ends, at the tip of the feeding arm. A roller is provided, and the passive lever is provided with a plate with which the roller comes into contact with the rotation of the feeding arm, and the extension line of the contact surface when the roller comes into contact with the plate is the center of rotation of the feeding arm. , Is obliquely provided so as to intersect with an imaginary line connecting the roller and the contact portion of the plate.

[Function of device]

Therefore, according to the present invention, when the seedling mounting table that reciprocates left and right with respect to the drive case moves from the center of the drive case to the left lateral direction, the mat mounted on the seedling mounting table in the process of the movement. When the seedlings are scraped off by the planter described later to the unit planting stock and planted on the rice field, and when the seedling mounting table reaches the left lateral end, the roller of the feeding arm equipped in the drive case is constantly rotated. Contacts the plate of the passive lever of the vertical feed mechanism and rotates the passive lever by a predetermined angle to drive the vertical feed mechanism to vertically feed the mat seedling to the blunter side. Further, when the seedling placing table is moved from the end portion in the left lateral direction to the right lateral direction, the mat seedlings are scraped off by the planter by the planter in the course of the movement and planted on the rice field, When the table reaches the end portion in the right lateral direction, the roller of the feeding arm abuts on the plate of the passive lever in the same manner as described above to rotate the passive lever by a predetermined angle and drive the vertical feed mechanism to move the mat seedling to the planter side. Feed vertically.

In the process of this vertical feed, the plate on which the roller of the feeding arm abuts has a large abutting surface area, and the extension line of the abutting surface when the roller abuts is the rotation center of the feeding arm, the roller and the plate. Since it intersects with the imaginary line connecting the contact part of the roller, the passive lever is effectively operated, and the direction of the roller contact with the plate acts at a right angle to the contact surface. Drive reliably without
A certain amount of mat seedlings can be vertically fed.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a machine frame of a traveling type rice transplanter, an engine 2 is mounted on a front portion of the machine frame 1, and a mission case 3 is arranged on a rear portion thereof.
Further behind it is a drive case 4 and a plurality of planters.
5, 5 and a planting device 7 consisting of a seedling table 6 obliquely installed on the planter 5, 5 side so as to be able to reciprocate left and right with respect to the drive case 4, and a float 8 is attached below. Has been done. One end of a swing case 10,10 is rotatably supported on the wheel drive shafts 9,9 protruding from the mission case 3 on both left and right sides, and wheels 11,11 are rotatably supported on the ends thereof.

2 to 5, the seedling mounting table 6 is located at the upper part of the drive case 4 and has a slide block 13 which is slidably inserted in a lateral direction into a slide bar 12 projecting from the left and right sides. , A horizontal feed mechanism constituted by a screw shaft 14 inserted through and supported by the slide block 13 so as to reciprocate in the left and right lateral directions of the machine body, and the mat seedlings are vertically fed to the inclined lower end portion thereof. An apron 15 for receiving the end face is formed, and a planter 15 is formed on the apron 15.
Seedling outlets 16, 16 are formed at positions corresponding to 5, 5.

As shown in FIG. 3, guide plates 17 and 17 are provided outside the seedling take-out ports 16 and 16 and below the apron 15. The guide plates 17 and 17 are one of the drive cases 4. It is mounted on a horizontal frame 20, 20 fixed to a support arm 18 protruding from the side hanging part and a support arm 19 hanging from the other side so as to be able to move forward and backward, and in front of the horizontal frame 20, 20. The apron guides 21, 21 fixed to the surface facing diagonally downward are provided with elongated holes 22, which are closer to one side supporting the guide plates 17, 17.
22 is formed, and a bell crank-shaped apron arm 23, 23 is rotatably supported on the other side.
At one end of 23, operating pins 24, 24 have long holes 22, 22 and a guide plate.
The apron guides 21, 21 are configured to be movable back and forth by being fitted in lateral holes (not shown) formed in 17, 17 and not shown. Then, the other ends of the apron arms 23, 23 are interlockingly connected via a connecting rod 25, an apron adjusting lever 26 is fixed to one apron arm 23, and a wire 27 is connected to the other apron arm 23. The other end of the wire 27 is linked and interlocked with a passive lever 29 of a seedling vertical feeding mechanism 28, which will be described later.When the apron adjusting lever 26 is operated, the apron arms 23, 23 are rotated to move the apron 15 back and forth. In conjunction with this, the stop position of the passive lever 29 is adjusted, and the seedling vertical feed amount and the seedling scraping amount by the planters 5, 5 are adjusted. At that time, the guide plate 1 integrated with the apron 15
7,17 slide back and forth on the upper surface of the apron guide 21,21.

On the other hand, the seedling vertical feeding mechanism 28 is configured as follows. That is, the pulleys 31a, 31a of the drive shaft 31 mounted between the brackets 30, 30 mounted on the lower surface of the seedling mounting table 6 near the lower portion.
And the pulley 32 of the driven shaft 32 that is located above and is mounted
A belt with protrusions 33, 33 ... Is stretched between a and 32a with the protrusions protruding from the upper surface of the seedling mounting table 6, and a passive mechanism composed of a ratchet mechanism is provided in the middle of the drive shaft 31. Lever 29
Is equipped. This passive lever 29 is
The ratchet foil 34 fixed to the
A side plate 35 that is loosely fitted to the drive shaft 31 in parallel with 34,
Through the ratchet pawl 36 that meshes with the ratchet wheel 34, the return spring 37 whose one end is locked to the side plate 35 and the extra length is wound around the drive shaft 31, and the ratchet wheel 34 and the ratchet pawl 36. A receiving plate 38 that opposes the side plate 35, and a flat plate that is laid between the front ends of the receiving plate 38 and the side plate 35 to form a contact surface of feeding arms 39, 39 described later. 40, a stepped pin 41 interposed between the side plate 35 and the receiving plate 38 and integrally fixing the both, and a stopper bar having one end loosely fitted to the receiving plate 38 side of the stepped pin 41. It is composed of a plate 42.

The feeding arms 39, 39 are located below the front of the screw shaft 14 mounted on the drive case 4, and are rotatably supported by the left and right ends of the drive shaft 46 mounted on the drive case 4, respectively. The rollers 39a, 39a that come into contact with the plate 40 are provided at the tips of the feeding arms 39, 39. The rollers 39a, 39a are provided so as to project in the rotational direction of the feeding arms 39, 39 so that the contact action direction acts on the contact surface of the plate 40, and the shapes of the feeding arms 39, 39 also make contact with each other. It is formed so that the action direction acts on the inclined contact surface, and when the seedling mounting table 6 laterally moves to either the left or right end, the rollers 39a, 39a contact the plate 40 of the passive lever 29. The seedling vertical feed mechanism 28 is driven to come into contact therewith. And the plate 40 with which the rollers 39a, 39a abut
Is obliquely provided so that the extension line of the contact surface when the roller 39a contacts the virtual line connecting the center of rotation of the feeding arm and the contact portion of the roller and the plate. A long hole 42a into which the receiving pin 43 is fitted is formed in the stock bar plate 42 in the longitudinal direction thereof, and the receiving pin 43 is supported by a swing arm 45 pivotally supported by a support shaft 44 and the wire. It is connected to the other end of 27. 47 is side plate 35 and support plate 38
The cushion rubber is interposed between the seedling mounting table 6 and the lower surface of the seedling mounting table 6.

In the above configuration, when the planting device 7 is driven and the body is moved forward, the planters 5, 5 scrape off the seedlings for the unit planting stock from the mat seedlings placed on the seedling placing table 6. When the seedling mounting table 6 reaches one of the lateral movement ends, the roller 39a of the one feeding arm 39, which is always rotating, contacts the plate 40 of the passive lever 29 to keep the passive lever 29 constant. The ratchet pawl 36 is rotated at an angle, and the ratchet pawl 36 rotates the ratchet wheel 34 in conjunction with this, so that the belt 33 with a protrusion rotates to vertically feed the mat seedling, and the end face thereof is received by the Evron 15.

Further, when the seedling table 6 reaches the opposite lateral movement end, the roller 39a of the other feeding arm 39, which is always rotating, abuts the plate 40 of the passive lever 29 to rotate the passive lever 29 at a fixed angle. Since it is moved, the mat seedlings can be vertically fed as described above.

By the way, in the process of the vertical feeding of the series of seedlings, the plate 40 of the passive lever 29 with which the roller 39a of the feeding arm 39 contacts, the extension line of the contact surface when the roller 39a abuts, Center of rotation, roller 39a and plate 4
Since the roller 39a which is in contact with the plate 40 can be effectively pushed and rotated by the passive lever 29, the roller 39a which is in contact with the plate 40 can be rotated because it is obliquely provided so as to intersect with the imaginary line connecting the contact portion of 0. When the roller 39a comes into contact with the plate 40 along with the rotation, the roller 39a performs a pressing action while rotating the contact surface, so that the contact action direction of the roller 39a with respect to the plate 40 is the contact surface of the plate 40. Therefore, the seedling vertical feed mechanism 28 can be driven without difficulty without fail, and since the contact portion is formed by the flat plate 40, the contact surface area is increased. Therefore, even if the passive lever 29 is distributed and set to the left and right of the seedling placing table 6 at the time of assembly and the positioning is not good, or when the seedling placing table 6 moves to either the left or right end. , Some kind of external force Even if it acts in the lateral direction, or even if the lateral feed mechanism undergoes extreme abnormal wear, the feeding arm 39 always comes into contact with the plate 40 of the passive lever 29, and there is a risk of contact failure. Since there is no,
It does not hinder the vertical feeding of seedlings.

Further, the side plate 35 and the receiving plate 38 of the passive lever 29 are connected by the plate 40, and also the stopper plate
Since the stepped pin 41 for mounting the 42 is also connected, the passive lever 29 is sufficiently reinforced, and the stepped pin 41 also serving as the bearing of the stopper plate 42 is located outside the side plate 35 and the receiving plate 38. Since it is mounted so as not to project toward one side, there is no component member that abuts the feeding arm 39 on the outer periphery of the passive lever 29. Damage can be prevented in advance.

[Effect of device]

In short, the present invention provides a seedling vertical feed mechanism on the seedling mounting table that reciprocates left and right with respect to the drive case, and moves the passive lever of the vertical feeding mechanism to either end of the seedling mounting table. At this time, in a rice transplanter configured to drive a vertical feed mechanism by contacting a feeding arm equipped in the drive case in a constantly rotating state, a roller is provided at a tip end portion of the feeding arm, and a feeding arm is provided at a passive lever. A plate with which the roller comes into contact with the rotation of the plate is provided, and an extension line of the abutting surface when the roller comes into contact with the plate,
Since it was installed obliquely so as to intersect with the virtual line connecting the rotation center of the feeding arm and the contact portion of the roller and the plate, the seedling mounting table is When the roller of the feeding arm comes into contact with the plate of the passive lever by moving to one of the left and right ends, the extension line of the contact surface is the center of rotation of the feeding arm.
Since it intersects with an imaginary line connecting the roller and the abutting portion of the plate, the passive lever can be effectively operated in accordance with the rotation of the feeding arm, and the abutting direction of the roller to the plate is the same. Since it works in the direction perpendicular to the contact surface, it is possible to drive the vertical feed mechanism without difficulty and to vertically feed a predetermined amount of mat seedlings,
The contact surface area can be expanded by making the contact part of the passive lever with which the roller abuts into a flat plate. Therefore, when assembling the passive lever to the left and right of the seedling mounting table during assembly, Even if the positioning is poor, or when the seedling stand moves to the left or right end,
Even if some external force acts in the lateral direction of the seedling mounting table, or even if the lateral feeding mechanism experiences extreme abnormal wear, the feeding arm can always be brought into contact with the plate of the passive lever, There is no damage to the feeding arm or the passive lever due to the abutting disengagement, and there is no trouble in the vertical feed.

[Brief description of drawings]

The drawings show an embodiment of a vertical seedling feeding device in a rice transplanter according to the present invention. Fig. 1 is an overall side view of the rice transplanter, and Fig. 2 is a vertical cross-sectional view of a main part of the planting device. FIG. 3 is a side view of the same, FIG. 4 (A) is a side view of a seedling vertical feed mechanism, FIG. 3 (B) is a perspective view of a passive arm, and FIG. 5 is a bottom view of a central portion of a seedling stand. . In the figure, 4 ... drive case, 6 ... seedling stand, 28 ... longitudinal feed mechanism, 29 ... passive lever, 39 ... feeding arm, 39a ... roller, 40 ... plate.

Claims (1)

(57) [Scope of utility model registration request] 1. A vertical feeding mechanism for seedlings is provided on a seedling table which reciprocates left and right with respect to a drive case, and when a passive lever of the vertical feeding mechanism is moved to one of left and right ends of the seedling table. ,
In a rice transplanter configured to drive a vertical feed mechanism by abutting against a feeding arm equipped in the drive case in a constantly rotating state, a roller is provided at a tip end portion of the feeding arm,
The passive lever is provided with a plate with which the roller comes into contact with the rotation of the payout arm, and the extension line of the abutting surface when the roller comes into contact with the plate has a rotation center of the payout arm, the roller and the plate. A vertical seedling feeding device for a rice transplanter, which is obliquely installed so as to intersect an imaginary line connecting the contact portion of the rice seedling.