JPH0453222Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for adjusting the vertical feed amount of planted seedlings in a rice transplanter that performs a seedling planting operation.

[Problems to be solved by the prior art and the invention] Generally, in the planting section of this seed rice transplanter, a seedling stand is placed horizontally to hold the planted seedlings that have been scraped off by the planting operation of the planting claw. A vertical feeding mechanism is provided in which vertical feeding is performed by intermittent feeding operations of a vertical feeding body timed to reach the moving end. In this vertical feed mechanism, when adjusting the amount of scraping, for example, it is preferable to adjust the amount of vertical feed commensurate with the adjustment of the amount of scraping.

However, conventionally, the amount of vertical feed has been adjusted by, for example, regulating the return position of the operating lever that performs the vertical feed operation, or changing the amount of protrusion of the vertical feeder toward the seedling mounting surface. was. However, in the former case, there is no problem when adjusting to increase the vertical feed amount, but
When adjusting in the direction of decreasing the amount, it is necessary to operate the vertical feeder in the opposite direction to the direction in which the vertical feeder operates, and in this case, if the planted seedlings are placed on the seedling stand, the It is necessary to move the planted seedlings at the same time, which not only makes the operation heavy and extremely troublesome, but also causes damage or breakage to the adjustment section.Furthermore, the operation of the vertical feeder causes unreasonable compression of the planted seedlings. There are problems such as reduced planting accuracy.

On the other hand, although this does not happen in the latter case, if the protruding amount of the vertical feeder is reduced to reduce the amount of vertical feed, the vertical feed performance of the vertical feeder for planting seedlings will decrease and slips may occur. This causes the problem that accurate vertical feeding cannot be performed, and when the vertical feeding body protrudes greatly to increase the amount of vertical feeding, the vertical feeding body digs deeply into the planted seedlings and damages the planted seedlings.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was created with the aim of providing a device for adjusting the vertical feed amount of planted seedlings in a rice transplanter, which can eliminate these drawbacks. The device has a device for adjusting the amount of scraping of the planted seedlings placed on the seedling platform, and when the seedling platform reaches the end of horizontal movement, the rotatably driven vertical feed claws move toward the vertical feed body side. In a rice transplanter that vertically feeds planted seedlings on a seedling platform by contacting with an operating arm and forcing it to swing, the vertical feeding claw is arranged so as to be freely adjustable in distance and distance relative to the operating arm. The present invention is characterized in that the vertical feed amount of the vertical feed body is adjusted by changing the amount of swing of the actuating arm in accordance with the distance adjustment of the vertical feed pawl.

With this configuration, the present invention allows the vertical feed amount to be increased or decreased by an extremely simple operation of adjusting the distance of the vertical feed pawl relative to the operating arm, without affecting the vertical feed performance. This is designed to be easy and reliable.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 is a single-wheel walking type rice transplanter, which includes an engine 2 at the front of the machine, a transmission 3, a planting section 5 having a seedling stand 4 with a low front and a high rear.
A handle 6, left and right side floats 7, running wheels 8, and a chain case 9 arranged on the left side of the running wheels 8.
It is composed of various members such as.
On the other hand, reference numeral 10 denotes a body frame that connects the engine section at the front of the machine and the working section 5 at the rear, and a chain transmission mechanism to the planting section 5 is installed inside the body frame.

Further, the gear case 11 connected to the fuselage frame 10 has an operating shaft 12 rotatably connected to the chain transmission mechanism in an interlocking manner. A pair of planting drive cases 13 are provided on both the left and right sides, and the power from the operating shaft 12 is connected to the planting claws 14 provided on the outside of each of the planting drive cases 13 by a chain transmission, It is designed to carry out the planting operation. Further, a transmission case 15a is provided on one end side of the gear case 11, and a seedling stand arranged in front of the seedling stand 4 is connected to the operating shaft 12 via a chain transmission built in the transmission case 15a. Power is transmitted to a transverse feed shaft 15 for transverse feed. A cross-feeding piece 16 is engaged with the screw groove of this cross-feeding shaft 15.
As the transverse feed shaft 15 rotates in conjunction with the drive of the operating shaft 12, the transverse feed piece 16 is guided by the screw groove and reciprocates left and right.
This horizontal feeding piece 16 is connected to the seedling loading stand 4 via a connecting frame 17, and the seedling loading stand 4 is connected to the horizontal feeding piece 1.
Following the lateral feeding of 6, the lateral feeding operation is integrally carried out in a reciprocating manner to the left and right.

Further, the other end of the horizontal feed shaft 15 is connected to the drive case 13.
However, there is a rotation shaft 20 on the driven side of the chain transmission mechanism 19 with the protrusion 15a as the drive side.
A cover body 21 that covers the chain transmission mechanism 19 is rotatably fitted at its base end 21a into a bearing portion of the transverse feed shaft 15 of the drive case 13. On the other hand, 22 is a planting number adjustment lever, and the adjustment lever 22 is pivotally connected via a support shaft 22a to a holder 4a provided on the side of the seedling stand 4 so as to be able to freely swing. When the lever arm 22b swings in conjunction with the operation of the lever 22, the seedling receiver 2 engages with the lever arm 22b.
3 moves up and down, thereby adjusting the vertical position of the seedling receiver 23 with respect to the seedling platform 4, so that the number of planted seedlings to be scraped by the planting claw, that is, the amount of seedlings to be scraped, can be adjusted. However, the lever arm 22b connects to the cover body 21 via the connecting rod 24.
is linked to. And the cover body 21 is
By swinging back and forth in conjunction with the swinging operation of the adjustment lever 22 in a state where the stopper 21a made of a bolt is loosened, the back and forth position of the rotating shaft 20 can be adjusted as described later. Here, the rotation axis 20
is loosely fitted into an elongated hole 13a formed in the drive case 13, thereby allowing the transverse feed shaft 15 to swing about its axis. Further, a vertical feed pawl 25 is provided on the rotating shaft 20, and is constantly rotated in conjunction with the horizontal feed shaft 15.

On the other hand, actuating arms 27 are attached to the support shafts 26 on the seedling holders 26 at the middle part of the seedling platform 4 and at the end on the vertical feed claw 25 side.
It is provided so as to be able to swing freely around 7b as a fulcrum. Then, in synchronization with the fact that the seedling platform 4 reaches the end of the lateral movement, the operating arm 27
A vertical feed pawl 25 comes into contact with a pin 27a provided at one end, and is operated by pushing down from the top to the bottom. Furthermore, this operating arm 2
One end of a link rod 28 is pivotally connected to the other end of the actuator 7, and the link rod 28 is provided integrally with each leg of the operating body 29. Moreover, a vertical feed shaft 31, on which a vertical feed body 30 is integrally supported, passes through the operating body 29 so as to be freely rotatable.
A ratchet gear 32 is integrally supported by the vertical feed shaft 31, and a ratchet claw 33 that engages the ratchet gear 32 only in one direction (the direction of vertically feeding the planted seedlings) and disengages in the opposite direction is connected to the operating body. 29. Then, as mentioned above, the pin 27a
However, when subjected to a downward pushing action by the vertical feed pawl 25, the actuating body 29 swings in the direction of arrow A, and at this time, the ratchet pawl 33 engages with the ratchet gear 32, causing the vertical feed shaft 31 to rotate. The vertical feed body 30 provided on the vertical feed shaft 31 rotates.
is adapted to rotate by a predetermined pitch in response to the amount of operation of the actuating arm 27, thereby vertically feeding the planted seedlings placed on the seedling platform 4. 25 approaches the pin 27a as the seedling receiver 23 is moved downward by adjusting the lever to increase the amount of scraping, as described above, so that the pin 27a is pushed down by the vertical feed pawl 25. The amount of operation increases, and in this way, the amount of vertical feed by the vertical feed body 32 can be increased or decreased by adjusting the distance of the vertical feed pawl 25 relative to the operating arm 27.

In the embodiment of the present invention configured as described above, the seedling planting operation in the paddy field is carried out by the seedling planting operation of the planting claw 14 in synchronization with the running of the traveling wheels 8. In this case, the vertical feed claw 25 acts to push down the operating arm 27 to vertically feed the planted seedlings.

That is, in the present invention, the vertical feed claw 25 is moved at the timing when the seedling table 4 reaches the horizontal transfer end.
comes into contact with the pin 27a of the actuating arm 27, pushes it downward, and moves the vertical feeder 3 as described above.
2 rotates to vertically feed the planted seedlings, and the vertical feed claw 2 on the drive side performs this vertical feeding action
5 is operatively connected to the actuating arm 27 by adjusting the distance from or near the actuating arm 27 on the vertical feed body 32 side by operating the adjustment lever 22, and changing the amount of depressing operation of the actuating arm 27. vertical feeder 3
The vertical feed amount in step 2 will be adjusted to increase or decrease. Therefore, to adjust the vertical feed amount, simply move the vertical feed pawl 25 to the operating arm 2.
By just a very simple one-touch operation of adjusting distance relative to 7, the vertical feeder 3 can be
This can be done reliably without activating the seedling stand 4 itself.
Even when the machine is placed on the machine, the vertical feed amount can be adjusted very easily.
There is no inconvenience such as damage to the vertical feeding mechanism, and since the vertical feeding body 32 does not operate, the planted seedlings will not be compressed. Moreover, since the vertical feed amount is adjusted by adjusting the distance of the vertical feed claw 25 relative to the operating arm 27, the position of the vertical feed body 32 relative to the seedling stand 4 changes even if the vertical feed amount is adjusted. For this reason, when the vertical feed amount is adjusted to the decreasing side, the vertical feed body 32 sinks from the seedling loading surface, resulting in a decrease in vertical feed performance and slipping, resulting in loss of vertical feed accuracy. , conversely, when adjusted to the increasing side,
The vertical feeding body 32 does not protrude from the seedling mounting surface and bite deeply into the planted seedlings, causing damage to the planted seedlings, thereby ensuring highly accurate vertical feeding adjustment with little damage to the seedlings. This means that you can do it.

Furthermore, in the embodiment, the adjustment of the vertical feed amount is performed in conjunction with the adjustment of the scraping amount by the seedling receiver 23, so these adjustments can be made simultaneously by operating the adjustment lever 22. Moreover, as the scraping amount increases, the vertical feed amount is increased accordingly, so the vertical feed amount adjustment required when adjusting the scraping amount can be done with a single lever operation. can be done at the same time, resulting in a significant improvement in workability. Further, since the distance between the vertical feed pawl 25 and the operating arm 27 is adjusted by the vertical feed pawl 25 swinging around the axis of the horizontal feed shaft 15, the structure is It is convenient because it can be simplified.

It should be noted that the present invention is of course not limited to the above-mentioned embodiments, and the vertical feed pawl is constructed such that its facing distance with respect to the operating arm can be freely adjusted in distance and distance, and linked to changes in the amount of swing of the operating arm. Any means may be used as long as it adjusts the amount of vertical feed of the vertical feed body, and therefore, the transverse feed shaft and the vertical feed pawl may be driven by gears instead of chain transmission.

[Operation and Effect] In summary, since the present invention is constructed as described above, adjusting the vertical feed amount of the planted seedlings is extremely simple, simply by adjusting the distance between the vertical feed claws and the operating arm. This is achieved by changing the amount of swing of the actuating arm with just a single touch operation, which makes it easy to adjust the vertical feed amount, and it also eliminates the need to operate the vertical feed body itself one by one as in the past. As a result, the vertical feed amount can be adjusted without putting an unnecessary burden on the vertical feed mechanism, and even if the planted seedlings are placed on the seedling stand, the adjustment will not be affected in any way. It can be done quickly and easily without any problems.

Furthermore, this adjustment of the vertical feed amount is performed by adjusting the perspective of the vertical feed claw with respect to the operating arm, and the vertical feed position of the vertical feeder relative to the seedling stand does not change. In the event that
In cases where the vertical feeder is adjusted by moving it in and out of the seedling surface, if the vertical feeder is submerged, the vertical feed performance decreases, making them more likely to slip, impairing the accuracy of vertical feed, or conversely causing the plants to protrude too much. This prevents the seedlings from digging deeply into the planted seedlings and causing damage to the planted seedlings, making it possible to easily and reliably adjust the vertical feed with high precision and little damage to the seedlings.

[Brief explanation of the drawing]

The drawings show an embodiment of the device for adjusting the vertical feed rate of planted seedlings in a walk-behind rice transplanter according to the present invention, in which Figure 1 is an overall side view of the rice transplanter, and Figure 2 is a plan view of the same. , Figure 3 is a side view of the main part of the vertical feed mechanism, Figure 4 is a side view of the main part of the vertical feed mechanism.
The figure is a schematic plan view of the vertical feed mechanism, and FIG. 5 is a developed view of the power transmission system. In the figure, 1 is a rice transplanter, 4 is a seedling stand, 5 is a planting section,
14 is a planting claw, 25 is a vertical feed claw, and 27 is an operating arm.

Claims (1)

[Scope of Claim for Utility Model Registration] 1) A vertical feed having a device for adjusting the amount of scraping of planted seedlings placed on a seedling platform and rotating when the seedling platform reaches the end of horizontal movement. In a rice transplanter that vertically feeds planted seedlings on a seedling platform by making the claw contact the operating arm on the side of the vertical feeder and forcibly swing it, the vertical feeder claw is moved relative to the operating arm. A rice transplanter characterized in that the vertical feed amount of the vertical feed body is adjusted by changing the swing amount of the actuating arms in accordance with the distance adjustment of the vertical feed claws, which are arranged opposite to each other so as to be freely adjustable in distance. Vertical feed amount adjustment device for seedlings. 2) Vertical feed amount of planted seedlings in the rice transplanter according to claim 1, wherein the distance adjustment of the vertical feed claw with respect to the operating arm is linked to the scraping amount adjusting device. Regulator.