JPH0432026Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a seedling delivery drive device in a walking rice transplanter or a riding rice transplanter.

(b) Prior Art Conventionally, as a seedling delivery drive device in a rice transplanter, a seedling platform is installed diagonally so as to be able to reciprocate from side to side, and the seedling platform is driven by either one of a pair of left and right feeding arms at the lateral moving end of the platform. A device in which a helical shaft for reciprocating a seedling stand is supported on the upper side of a drive case and a shaft of a feeding arm is supported on the lower side so as to send out seedlings with a sending device is already known from Japanese Utility Model Application No. 121721/1983. There is.

(c) Problems to be solved by the invention The other end of the shaft of the feeding arm in the seedling feeding drive device of the known rice transplanter is cantilevered from the side of the drive case near the helical shaft that reciprocates the seedling platform. Since it was supported by an extended support plate, the support of the shaft became unstable, and if the shaft was bent under load, the delivery amount could be insufficient, and a support member for the apron was provided separately. However, there were problems such as a complicated structure.

(d) Means for Solving the Problems The present invention provides a seedling stand that is installed diagonally so that it can reciprocate from side to side, a helical shaft for reciprocating the seedling stand, and a delivery device at the lateral moving end of the seedling stand. In a rice transplanter in which a rotating shaft having a feeding arm that operates is supported in a drive case, one end of the rotating shaft is supported by one side of the transmission case, and the other end is supported by hanging from the other side of the drive case. The support member of the apron, which is supported by the frame and provided at the delivery part of the seedling stand, is supported by the lower part of the transmission case part and the support frame, and the helical shaft support part of the drive case and the transmission case on one side thereof are connected to the other parts. The above-mentioned problems have been solved by constructing the side support frame and the apron into an integral framework, and by supporting the shaft of the feeding arm and the apron by the support arm.

(e) Action When the seedling stand is moved back and forth while the machine is moving forward, and multiple planting rods are moved up and down, those planting rods will pick up one seedling in the seedling stand from the seedling outlet in the apron. The seedlings are scraped out one by one and planted on the rice field, and when the seedling platform reaches the end of the horizontal movement, the feeding arm drives the seedling delivery device, which sends out the seedlings in the seedling platform.

At that time, the shaft of the feeding arm is connected to the transmission case,
It is firmly supported by the transmission case, the drive case support frame, and the support frame in the framework constituted by the apron, and accurately drives the seedling delivery device.

(F) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a fuselage frame having an engine 2 and a transmission case 3 at the front, and a center float and left and right side floats 5 at the rear, a drive case 6, and a plurality of planting rods 7. A planting device 10 consisting of a seedling platform 8 etc. that reciprocates on the left and right is installed, and wheel drive shafts 11, 11 protruding from the transmission case 3 to both sides are connected to chain cases 12, 12 and a swing chain case 13. ,13
The swing chain cases 13, 13 are raised and lowered by hydraulic cylinders via a seesaw mechanism.

The seedling platform 8 is reciprocated in the lateral direction by a helical shaft 16 at the top of the drive case 6, and the feeding arm 1
7 and 17 are screwed near both ends of the rotating shaft 17a, one end of the rotating shaft 17a is supported by a transmission case part 6a hanging down from one side of the drive case 6, and the other end is fitted into a bearing 17b. is a support frame 19 hanging down from the upper part of the other side of the drive case 6;
The flange 17 of the bearing 17b is fitted into the hole 19a of the bearing 17b.
c is screwed onto the support frame 19, and the feed-out arms 17, 17, which constantly rotate, are connected to the feed-out device 18, which is a belt 14 with a protrusion, at the lateral moving end of the seedling platform 8. The ratchet lever 18a of the seedling stand 8 is driven intermittently.
A series of aprons 21 that receive the sending-out side end faces of pine seedlings stored in each seedling tray have a seedling outlet 21a that corresponds to each seedling tray and the planting rod 7, and a drive case 6. Guide plates 22, 22 are provided on the lower surface between the seedling outlet ports 21a, 21a located closer to the center, and the seedling outlet ports 21a, 21a located on the outside thereof. The horizontal frame 24 is superimposed on apron guides 25, 25 fixed to the horizontal frame 24, and the horizontal frame 24 has one side connected to the support arm 23 protruding from one side hanging portion of the drive case 6, and the other side connected to the support arm 23, which is integral with the support arm 23. Since the apron guide 25 is screwed onto the lower end of the support frame 19, the upper part of the drive case 6 extends to the left and right, the transmission case part 6a hanging from one side thereof, and the support frame 19 on the other side. and the horizontal frame 24 are configured as a framework.

Further, a bell crank-shaped arm 28 is rotatably supported on one side of the lower surface of the apron guides 25, 25, and a long hole 26 is bored on the other side of the apron guide 25, so that the bell crank-shaped arm 28 and the guide plate 22 are connected by an operating pin 30 inserted into the elongated hole 26, and the left and right bell crank-shaped arms 28, 28 are interlocked and connected by a connecting rod 32, and one of the bell crank-shaped arms Lever 3 on 28
3 is fixed, and one end of the wire 35 is connected to the other bell crank-shaped arm 28. The other end of the wire 35 is connected to the seedling stand 8.
Since it is interlocked with the ratchet lever 18a of the delivery device 18 provided in the center of the lever 33, when the lever 33 is operated, the left and right bell crank-shaped arms 28,
28 rotates, thereby causing the apron 21 on the one hand
moves back and forth while maintaining a constant posture, and in conjunction with this movement, the stop position of the ratchet lever 18a is adjusted, and the amount of seedlings sent out and the amount of seedlings scraped by the planting rods 7 are adjusted.

Then, the belt 1 with protrusions of the sending device 18
Reference numeral 4 denotes a grooved pulley of a drive shaft 14a supported by a bracket 8a attached to the lower surface of the seedling stand 8, and a spring 8 which can move forward and backward above the pulley.
The grooved pulley of the driven shaft 14b is tensioned upwardly by the drive shaft 14a.
A ratchet mechanism is attached to the middle part of the ratchet mechanism, and the ratchet mechanism includes a ratchet wheel 18b fixed to the drive shaft 14a, a base part loosely fitted to the drive shaft 14a at the side part of the ratchet wheel 18b, and a distal end part. The single ratchet lever 18a is bent into a U-shape, the ratchet claw 18c is pivoted at the midpoint of its length, and the seedling stand 8 is fitted into both ends of a shaft fixed to the tip. rollers 29, which the feeding arms 17, 17 abut at the lateral movement ends of the rollers 29;
29, and a pin 36 protruding from the folded portion of the ratchet lever 18a, although not shown, loosely fits into a round hole in the stopper plate.
A receiving pin inserted into an elongated hole formed in the stopper plate is supported by a swing arm pivoted by a fulcrum pin and connected to the other end of the wire 35.

In the rice transplanter described above, when the machine is moved forward while driving the planting rods 7... and the seedling platform 8, the planting rods 7... scrape off the pine seedlings in the seedling platform 8 one by one. When the seedling table 8 reaches the end of lateral movement after planting on the rice field, one of the feeding arms 17, which is constantly rotating, comes into contact with the roller 29 on that side (for example, the roller 29 on the ratchet lever side), and the ratchet lever 18
a is rotated by a certain angle, and the ratchet claw 18c rotates the ratchet foil 18b accordingly, so the belt with protrusions 14 rotates and sends out a pine seedling, and the end surface of this pine seedling is attached to the apron 21.
It is accepted by

At this time, the position of the apron 21 is adjusted by rotating the bell crank-shaped arm 28 and moving it up and down, and in conjunction with this, the receiving pin at the tip of the wire 35 moves back and forth, and the return spring moves the ratchet lever 18a. Since the rotation is biased, the receiving position of the apron 21 and the amount of rotation of the belt 14 with protrusions can be adjusted simultaneously in conjunction with each other.

Furthermore, when the seedling platform 8 reaches the opposite end of lateral movement, the other feed-out arm 17, which is constantly rotating, comes into contact with the other roller 29, causing the ratchet lever 18 to come into contact with the other roller 29.
Since a is rotated, it is possible to send out seedlings in the same manner as described above.

When sending out seedlings in this manner, the other end of the rotating shaft 17a (the side opposite to the transmission case portion 6a) is firmly supported by the support frame 19 that connects the other side of the drive case 6 and the horizontal frame 24, so that When the side feeding arm 17 rotates the ratchet lever 18a, the rotating shaft 17a does not bend and can be reliably rotated at a predetermined angle. Even if there is some manufacturing error, the flange 17c of the bearing 17b fitted to the end of the rotating shaft 17a is screwed onto the support frame 19, so that it can be easily mounted and supported. The frame 19 can also be used as a support means for the rotating shaft 17a and the horizontal frame 24, which is a means for attaching the apron 21.

Figures 4 to 8 show the seedling stopper 37 and the seedling presser 3.
8, the bases of a large number of rod-shaped seedling holding bodies 38 are fixed to a support shaft 39, and the seedling mounting stand 8
A leaf press plate 42 is fixed to the front surface of a pair of left and right holders 41, 41, which are made of plate bodies having a triangular upper part when viewed from the side, and are erected on the side walls 40, 40 of
On both sides and the middle part of the lower surface of this leaf holding plate 42,
Four support plates 43 each having a long hole 44 having a plurality of locking recesses 44a formed in the upper front edge thereof.
... are fixed, and the locking recesses 44a of these long holes 44 are fixed.
The end portions of the support shafts 39 are rotatably and slidably fitted in the longitudinal direction thereof, and the seedling presser body 38 is attached to a disk 45 fixed to the intermediate portion of each support shaft 39. The recess 44a locks the support shaft 39 while urging it to rotate upwardly.
A plate 48 protruding from the support shaft 39 is provided with a tension spring 46 that is fitted into and biases the support shaft 39, and a spring 47 interposed on the outer side of the support shaft 39 presses and biases the support shaft 39 toward the center. ...Pin 50...
If the height of the seedling presser body 38 is to be adjusted in accordance with the thickness of the bed soil by keeping it fitted in the lower part of the elongated hole 44 (the part that does not have the locking recess 44a), use the above-mentioned support shaft. 39 is selected and fitted into either the upper or lower locking recess 44a.

One of the means for engaging and disengaging the pin 50 from the elongated hole 44 is as shown in FIG.
An operating lever 53 is attached to a leaf spring 52 that protrudes from the lower surface of the middle of the shaft.Since this leaf spring 52 faces between the ends of the support shafts 39, 39, the operating lever 53 cannot be moved. When tilted to either side, the leaf spring 52 pushes the support shaft 39 outward, so the pin 50 escapes from the elongated hole 44.
At that time, when the seedling presser body 38 is in the working position shown by the solid line in FIG.
6 and rotates upward as shown by the chain line, and is maintained in that position even when the operating lever 53 is released, and when the operating lever 53 is tilted to the other side, the other seedling presser body 38 rotates upward.

To put the seedling presser body 38 in the working position, tilt the operating lever 53 to push out the support shaft 39 and pin 50, rotate the seedling presser body 38 downward, then release the operating lever 53, and the pin 50 will move into the elongated hole. 44 and returns to the working position.

6 to 8 show another example, in which a plate 56 facing between the ends of the support shafts 39, 39 is movably supported on the support plates 43, 43.
When the operating lever 57 is slid in the horizontal direction by holding a grip portion 59 which is attached to a pair of left and right return springs 58 that hold the operating lever 57 in a neutral position, the plate 56 is attached to one of the supports. Push the shaft 39 to make the pin 50 escape from the long hole 44, and then press the seedling presser 3.
8 can be changed to the retracted position as in the above example.

Next, the seedling stopper 37 will be explained.
A pair of support plates 60, 60 are erected on the side wall 40 and partition wall 40a at a portion corresponding to the intermediate portion of the length of the belt with protrusions 14, and these support plates 60,
Since the end of the seedling stopper 37 is fitted into the hole 60, when the seedling stopper 37 is laid down, the fourth
As shown by the chain line in the figure, its tip comes into contact with the vicinity of the upper end of the belt with protrusions 14 and receives the bed soil, so even if the belt with protrusions 14 rotates while the supply of seedlings is stopped, the bed soil does not reach the upper end of the belt with protrusions. No damage to the bottom surface. The upper parts of the central support plates 60a, 60a are bent toward both sides, and a recess 61 is formed in this bent part.
When the seedling stopper 37 is rotated upward to take the retracted position, the base portion of the seedling stopper 37 made of an elastic rod fits into the recess 61 to maintain the retracted position.

(g) Effects of the invention As described above, the present invention includes a seedling stand 8 that is installed diagonally so as to be able to reciprocate from side to side, a helical shaft 16 that reciprocates the seedling stand 8, and a horizontally movable end portion of the seedling stand 8. A rotating shaft 17a having a feeding arm 17 that operates the feeding device 18 with
In this rice transplanter, one end of the rotating shaft 17a is supported by a transmission case part 6a on one side, and the other end is supported by a support frame 19 hanging down from the other side of the drive case 6. ,
Since the supporting member of the apron 21 provided at the feeding section of the seedling platform 8 is supported by the lower part of the transmission case section 6a and the supporting frame 19, the feeding arm 17 can
When driving the feeding device 18 at the horizontally moving end of the seedling platform, the rotating shaft 17 is equipped with feeding arms 17, 17.
The upper and lower ends of not only the end on the transmission case portion 6a side of a but also the other end are firmly supported by the midway part of the support frame 19 connected to the fixed member, thereby reliably driving the delivery device 18. be able to.

Further, the support frame 19 is connected to the rotating shaft 17a.
It can be used both to support the apron and to support the apron support member, simplifying the structure, reducing costs, reducing size and weight, and making the overall framework structure stronger.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a developed sectional view of the main parts of the planting device, Figure 2 is a side view of the same as above, Figure 3 is a side view of the rice transplanter, Figure 4 is a side view showing the seedling holding device and the seedling stopper part, 5 is a plan view of the same as above, FIG. 6 is a plan view of another device of same as above, FIG. 7 is a side view of same as above, and FIG. 8 is an exploded plan view of the same as above. 8... Seedling stand, 10... Planting device, 14... Belt with projection, 14a... Drive shaft, 16... Spiral shaft, 17... Feeding arm, 17a... Rotating shaft, 1
8... Delivery device, 17b... Bearing, 19... Support frame, 21... Apron, 24... Horizontal frame, 37... Seedling stopper, 38... Seedling presser.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A seedling platform 8 is installed obliquely so as to be able to reciprocate from side to side, and includes a helical shaft 16 for reciprocating the seedling platform 8, and a seedling platform 8.
In a rice transplanter in which a drive case 6 supports a rotating shaft 17a having a feeding arm 17 that operates a feeding device 18 at a lateral movement end of the rice transplanter, one end of the rotating shaft 17a is supported by a transmission case portion 6a on one side; The other end is supported by a support frame 19 hanging down from the other side of the drive case 6, and the support member of the apron 21 provided at the delivery part of the seedling stand 8 is connected to the lower part of the transmission case part 6a and the support frame 19. A seedling delivery drive device for a rice transplanter, characterized in that the seedlings are supported by. (2) A request for utility model registration in which a support hole is bored in the middle of the support frame 19, a bearing at the other end of the rotating shaft is loosely fitted into the support hole, and the flange of the bearing is screwed to the support frame. A seedling delivery drive device in a rice transplanter according to item 1.