JPS63177724A - Method for changing lateral feeding speed of seedling mount table in seedling planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention provides a method for changing the speed of a seedling platform in a seedling planting machine, in which the moving speed of a horizontally moving seedling platform is adjusted according to the number of times of scraping in one stroke. Regarding.

(B) Prior Art Conventionally, it has been common practice to configure the planting clutch so that even if the planting clutch is turned off at any time, it will always be turned off within a certain range when the planting body is in the ascending position. The boss parts of multiple speed change rotors are overlapped inside and outside on one shaft of the speed change device,
The one in which the speed was changed by selecting one of these boss parts and interlocking it with the shaft was published in 1986-32.
This was already proposed in Publication No. 95.

(c) Problems to be solved by the invention After the planting clutch of the known invention is disengaged, a gear change operation is performed, but the helical shaft and the shaft that drives it are operated until the switching positions of the pair of rotating bodies coincide. Normally, the planting body serves as a fulcrum at this position, and in order to move the planting body to this position, the entire planting device and its drive side must be manually rotated. There wasn't.

Therefore, when planting ffL seedlings or adult seedlings within the cutting range of the planting clutch, the first dividing point and the final dividing point enter the terminal turning part of the spiral groove of the spiral shaft, and the 0 point (planting body The first scraping point was set at point A as shown in Figure 7 so that it was approximately equidistant on average from the point where the bottom dead center is (approximately the bottom dead center). If the speed is changed to , the final scraping at the side of the horizontal movement end of the seedling platform will be displaced to point B, leaving scraping residue, resulting in wasted seedlings and the remaining seedlings will be pressed against the apron, resulting in vertical feeding failure. This caused the problem that seedlings that were scraped off in the vicinity became small plants.

(d) Means for Solving the Problems The present invention provides a system in which a spiral shaft for reciprocating a seedling platform to the left and right and a planting body for dividing the seedlings in the seedling platform and planting them in a field are constantly connected to each other. A plurality of transmission wheels are attached to at least one transmission shaft of the transmission device so as to freely rotate, and the power to the transmission wheels is interlocked through a transmission device, and the power to the transmission wheels is connected on and off by a planted clutch. In a seedling planting machine in which a transmission shaft and a switching body that rotates integrally are linked to change the speed, when changing the lateral movement speed of the seedling stand, the planter clutch is disengaged and the planting machine is changed. With the attached body stopped within a certain range of the raised position, move the helical shaft relative to the drive-side transmission shaft so that the seedling scraping position moves into the terminal turning part of the spiral groove provided on the outer periphery of the helical shaft. After adjusting the rotation, the switching body is engaged with the switched transmission wheel to change the speed, thereby deflecting only the helical shaft within the cutting range of the planting clutch, thereby solving the above-mentioned problem.

(E) A switching body that rotates with the shaft is interlocked with a rotary body that is rotatably attached to the shaft of the transmission with its boss portion overlapped, and a seedling stand is used to plant the desired seedlings. If you want to increase the amount of seedlings to be scraped depending on the growth rate of the seedlings, disengage the planting clutch to stop the planting body in an elevated position, and in this state, move it horizontally at a speed suitable for planting. When the shaft is rotated back within the stopping range of the planting body and the switching body is interlocked with the rotating body on the high speed side, the scraping start and end points of the planting body are brought forward, and the scraping points are moved to the side of the seedling stand. It is possible to prevent scraping from occurring at the moving end.

On the other hand, when changing the speed from a state in which the helical shaft is driven at high speed to a low speed, the planting body is advanced in the scraping direction with the planting clutch in the disengaged state, and the switching body is interlocked and interlocked with the rotating body on the low speed side.

(F) Example An embodiment of the present invention is explained about a seedling transplanter shown in the drawings. This seedling transplanter is a riding type, and is mounted on a traveling vehicle so that it can be raised and lowered by an upper link and a lower link. The unit is composed of a transmission case 2 having an input shaft 1 at the front, a plurality of floats attached to the lower part of the transmission case 2, a seedling stand 3, a planting body 5, etc. The guide rails 6 fixed to the lower and upper parts (not shown) are horizontally controlled by the guide block 8 fixed to the lower horizontal frame 7 and the guide block (not shown) fixed to the pillar installed near the front of the transmission case 2. The intermediate shaft 1o, which is supported movably and is driven by the input shaft 1, drives a plurality of sprockets) 11-a plurality of boiled planting bodies 5, and the longitudinal shaft 13, which is driven by a sprocket 12, drives a plurality of boiled planting bodies 5. , the helical shaft 17 on which the slide piece 16 is fitted is driven via the transmission 15, and the slide par 18 to which the other end of the slide piece 16 is fixed has both ends connected to the lower part of the seedling stand 3 with a connecting rod 18a. , 18a, the seedling stand 3 reciprocates in the lateral direction as the helical shaft 17 rotates.

The transmission 15 includes a vertical shaft 13 and a helical shaft 17.
One end protrudes into the transmission case 2o with a lid 18, and the end of the helical shaft 17 is equipped with a plurality of driven sprockets (21).
．． 22 is installed to transmit rotation but can be replaced, and the vertical feed shaft 13
A plurality of drive sprockets 23, 24 are rotatably fitted into the ends of the sprockets 21.
22 and 23.24 by extending the chain 725.2f3, and the drive sprocket) 23, 24
The outer surfaces of the bosses 23a and 24a have notches 2? An annular protrusion 27 with a and an annular protrusion 2 with a notch 28a
8 are provided in a protruding manner to separate the circular neutral gap 28, and the notch 2? The width of a, 28a is made sufficiently wider than the width of the claw 31, and the switching body 30 has a long hole in its center, and transmits rotation to the chamfered part of the vertical feed shaft 13, but is perpendicular to the axis. The claw 31 slides in the direction of the notch 2? a
Alternatively, the switching body 30 is connected to and disengaged from the switching body 28a, or is positioned in the neutral gap 28, and the outer end surface is received by a receiving plate 33 fixed with a bolt 32. Since the through holes 34 and 35 are provided, by replacing the spring pin 36 with either one of the through holes 34 or 35, the gear change state can be maintained.

In the above-mentioned seedling planting machine, while the seedling platform 3 moves horizontally one stroke, the seedlings to be planted by the planting body 5 are scraped, for example, 26 times or 20 times for young or medium-grown seedlings. When using a 28-feed or 20-feed method, as shown in Fig.
．． 22, and a sprocket with 15 and 18 teeth on the vertical feed shaft 13).
．． 28 is tensioned and the claw 31 of the switching body 30 is engaged with the notch 28a of the annular protrusion 28, the power is sequentially transmitted from the vertical feed shaft 13 to the switching body 30, the outer drive sprocket 24, the chino 26, and the driven It is transmitted to the helical shaft 17 via the sprocket 22.

In addition, the number of times the planting body 5... was scraped was increased to 28 times (26 times).
When the planting clutch is turned off, the switching body 30 is moved downward in FIG. When set to a, power is transmitted to the helical shaft 17 via the switching body 30, the inner driving sprocket 23, the chino 25, and the driven sprocket 21.

Therefore, when the seedling platform 3 reaches the end of the horizontal movement, the planting body 5.
- is the end of the spiral groove cut into the spiral shaft 17 by the slide piece 16, and when the chamfered portions of the spiral shaft 17 and the vertical feed shaft 13 are parallel to each other, the shape of the seedling stand 3 in FIG. The first scraping position of the lateral movement is A, which coincides with the case of 20 feeds, the last scraping position is point A' at 20 feeds, and is slightly above point A', that is, slightly later than point A', in the case of 26 feeds.

When using 16 feeds to plant large seedlings such as row seedlings, or 20 feeds as described above, the planting clutch is disengaged and the helical shaft 17 has a number of teeth as shown in FIGS. 3 and 4. Set driven sprockets 21 and 22 with 16 and 12 teeth, set drive sprockets 1-23.24 with 30 teeth and 18 teeth on the vertical feed shaft 13, and when setting the feed to 20, move the switching body 30 to the outer drive sprocket. Interlocking with tin rocket 24, 1B
When feeding, it is interlocked with the inner drive sprocket 23. In any of the above cases, the drive sprocket that is not connected to the switching body 30 is freely rotating during the planting operation.

In the case of 16 feeds as shown in Fig. 3, the final scraping point of the process when the seedling platform 3 reaches the end of the horizontal movement becomes point B in Fig. 7, resulting in unscraped residue. , the first intake point after the seedlings are transported vertically is point A, as in the previous case.

That is, the final scraping timing of the planting body 5 is a position where the seedling platform 3 has moved by l from the point A'', which is the end of the lateral movement.

5 and 6 are intended to solve the problem of the above-mentioned cylinder diameter being left behind. When the planting clutch is disengaged, the planting body 5 stops at the raised position as shown in FIG. Since the width of the notch that fits into the projection of the planting clutch is wider than the width of the projection, the helical shaft 17 can freely rotate the planting body 5 in the range of X-Y in FIG. When the clutch is disengaged, the chamfered surfaces of the vertical feed shaft 13 and the helical shaft 17 are parallel to each other as shown in FIG. a is set to lag behind the surface of the notch and chamfered portion of the outer annular protrusion 28 by θ, for example, about 20 degrees.

Then, remove the lid 18, pull out the spring pin 36, move the switching body 30 downward a little, and push the claw 31 into place.
Annular protrusion 28 integrated with drive sprocket 24 for 0 feed
The helical shaft 17 is removed from the notch 28a and positioned within the neutral gap 28 as shown in FIG. Rotate clockwise until point a matches the chamfered portion 13 of the vertical feed shaft, and in this state slide the switching body 30 downward to remove the notch 2.
7a, and insert the spring pin 3B into the lower through hole 34.
Insert and secure.

When the helical shaft 17 is rotated clockwise as described above, the seventh
In the figure, the final scraping point B moves to C'' and then to the first scraping point C, and when the seedling platform 3 reaches the end of lateral movement, one plant remains at point C'. Immediately after the seedling has been vertically fed, the first scraping in the next scraping process is done at point 0, without leaving a lower part of the neck of a predetermined size.

Also, when returning from 16 feed to 20 feed, contrary to the above, with the switching body 30 in the neutral position, rotate the helical shaft 17 so that the vertical feed shaft 13 is deflected counterclockwise by θ. Then,
The notch 28a of the outer drive sprocket 24 is connected to the vertical feed shaft 1.
3, the switching body 30 is interlocked with the drive sprocket 24.

Next, to explain another speed adjustment method, when the planting clutch is disengaged, the planting body 5 is at a position (A) where its tip is approximately at the same height as the bottom surface of the apron 39, as shown by the chain line in FIG. Therefore, when the helical shaft 17 is rotated clockwise by pushing it down within the range of Since it moves in the same direction as the time, the switching body 3
0 to the neutral position and then return the planting body 5 to its original position, the vertical feed shaft 13 and the switching body 30 will be at the clutch disengagement angle while the driving sprockets 23 and 24 are stopped. Since returning, the switching body 30 is moved downward to fit the claw 31 into the notch 27a, and is locked with the spring pin 36.

When the speed is adjusted in this manner, the speed can be changed by visual measurement using the apron 39 as a reference, and the speed can be easily changed even when a rotating tool such as a spanner is forgotten.

In the above embodiment, the switching body 30 was attached to the vertical feed shaft 13, but it is also possible to attach the switching body 30 to the helical shaft 17 for switching in the same manner as in the previous example, and even if the transmission is changed to gear transmission, the same speed change can be achieved. can be done.

In addition, an example will be shown in which the bosses are overlapped on the inside and outside as a means for switching the transmission wheels, but as shown in Fig. 11, the bosses of each driving sprocket are made to have the same diameter, and the vertical feed shaft 13 is made into a pipe, so that the inner and outer parts of each boss are overlapped. 40 engagement holes are provided on the circumferential surface, a communication hole 42 with a ball No. 41 is bored in the vertical feed shaft 13, and a cam 45 is inserted into the switching operation rod 43 movably inserted into the shaft hole. Attach the grip portion 46, insert and remove the switching operation rod 43 to match the cam 45 to the desired drive sprocket, and then attach the grip portion 46.
The pawl 41 may be pushed into the engagement hole 40 by rotating the handle 6 .

(G) Effects of the Invention As described above, the present invention allows the helical shaft 17 for reciprocating the seedling platform 3 from side to side and the planting body 5 for dividing the seedlings in the seedling platform 3 and planting them into the field to be constantly connected to each other. Interlockingly connected transmission 15
A plurality of transmission wheels are freely rotatably attached to at least one transmission shaft of the transmission 15, and one of the transmission wheels In a seedling planting machine in which the transmission shaft and the switching body 30 that rotate integrally are linked to change the speed, when changing the lateral movement speed of the seedling platform 3, the planter clutch is disengaged and planting is performed. With the body stopped within a certain range of the raised position, move the helical shaft 17 relative to the drive-side transmission shaft so that the cylinder diameter position moves into the terminal turning part of the helical groove provided on the outer periphery of the helical shaft. After adjusting the rotation, the switching body 30 is engaged with the switched transmission wheel to change the speed. Therefore, when the seedling platform 3 is moved at a high speed in order to plant large seedlings, it is necessary to adjust the rotation within the disengagement range of the planting clutch. , the angle of the helical shaft 17 can be adjusted with an extremely small operating force, and then the rotating body is moved to the switching body 3.
With the simple operation of selecting 0, the final scraping can be carried out reliably at the horizontally moving end of the seedling table 3 without leaving any residue.
The subsequent vertical feeding of the seedlings can be carried out accurately until the scraping surface comes into contact with the apron 39.

The initial scraping when the seedling platform 3 moves in the opposite direction can also be carried out reliably without excess or deficiency.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1(a) is a longitudinal sectional plan view of the transmission in an example in which the seedling stand is moved at low speed, FIG. 2(b) is a sectional view of the switching section, and FIG. 2 is a side view of the transmission. Figure 3 is a vertical sectional plan view of the target example, Figure 4
5 is a longitudinal sectional plan view of a transmission showing an embodiment of the wooden invention; FIG. 6 is a side view of the same; FIG. 7 is an enlarged view of the end of the helical shaft; FIG. A side view of the planting area, Figure 9 is a developed plan view of the transmission, and Figures 10 (a) and (b).
, (c) is an operational view, FIG. 11 is a sectional view showing another transmission wheel switching method, and FIG. 12 is a side view of the planting clutch. 311・Seedling stand, 13・Vertical feed shaft, 17・Spiral shaft, 2
0, 21φ・Driver sprocket, 23.24・・Drive sprocket, 27.28・Annular protrusion, 27a, 28 &
...Notch, 30...Switching body, 31...Claw drawing 7'!
” 7: Figure 5 Figure 7 procedural amendment (Hogen April 11, 1986)

Claims (1)

[Claims] A helical shaft 17 that reciprocates the seedling platform 3 from side to side and a planting body 5 that divides the seedlings in the seedling platform 3 and plants them in the field are interlocked via a transmission 15 that is constantly connected to each other. , the power to them is intermittent by a planting clutch,
A plurality of transmission wheels are freely rotatably attached to at least one transmission shaft of the transmission 15, one of the transmission wheels is selected, and a switching body 30 that rotates integrally with the transmission shaft is interlocked to change the speed. In the seedling transplanter, when changing the lateral movement speed of the seedling platform 3, with the planter clutch disengaged and the planting body stopped within a certain range of the raised position, the seedling scraping position is set to the spiral position. After adjusting the rotation of the helical shaft 17 with respect to the drive-side transmission shaft so that the helical shaft 17 moves into the terminal rotation part of the helical groove provided on the outer periphery of the shaft, the switching body 30 engages with the switched transmission wheel to change speed. A method for changing the transmission speed of a seedling platform in a seedling planting machine.