JPH03201904A - Rush transplantation machine - 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 [Industrial Application Field] The present invention relates to a seedling transplanter for planting multiple rows, such as four-row planting and six-row planting.

[Conventional technology] (Similar to the single-planting machine, a belt-type seedling feeding device intermittently transports the seedlings on the seedling platform downward, and also transfers the seedlings transferred to the lower end of the seedling platform. A seedling transplanter has been developed in which the seedlings are forcibly pushed out to the scraping opening, which is the seedling receiving position of the planting rod, using a seedling pushing rod that operates in synchronization with a feeding device.

In this type of seedling transplanter, the load on the seedling scraper using the planting rod is large, so the timing of the operation of the planting rod is generally staggered for each planting row.

For example, in the case of a four-row planting machine, the planting rods for the two inner rows and the planting rods for the two outer rows should have the same phase, and there should be a phase difference between the inner and outer planting rods. There are many 6. Since the seedling extrusion rods were synchronized with the planting rods of the planting row in which they were installed, the phase difference between the seedling extrusion rods of each planting row was equal to the phase difference of the planting rod phase 7F.

[Problems to be Solved by the Invention] However, since each seedling feeding belt of the seedling feeding device is driven by a common drive shaft and has the same timing of operation, all the belts of the seedling feeding device are not in operation. In order to complete the operation of the seedling extrusion rod and the implantation rod, it was not possible to make the phase difference between the inner and outer implantation rods too large.
FIGS. 7 and 8 show timing charts of the planting rod and seedling extrusion rod and the time chart of torsion torque in the four-row grass transplanter. In addition, in this rush transplanting machine, the two inner planting rods are attached to a common planting rod drive shaft, so the torsional torque T (C) of the central planting rod drive shaft is the same as that of the planting rods on both sides. Shaft torsion torque T (
L), T (R) is twice as much as 0. As shown in the figure, even if the phase difference 0 between the internal and external implanted rods is maximized, 0 = 40 degrees only, so the peak Tma of the internal and external torsional torque curve
x (C) Tmax (L, R) are close, and the peak ΣTm of the total torsional torque ΣT
Ax is quite high.

As described above, the conventional rush transplanting machine has a large maximum torque for driving the planting rod, which is not desirable in terms of strength, and also produces severe noise and vibration.The present invention aims to solve this problem. There is.

[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, the rush transplanting machine according to the present invention can handle 41 rush seedlings.
A seedling stand is placed on the seedling stand, a scraping opening is provided at multiple locations below the seedling stand corresponding to the planting row, and the bacteria on the seedling stand are scraped off. a feeding device; a seedling pushing rod that operates in synchronization with the seedling feeding device and forcibly pushes out the seedlings on the seedling platform transferred directly above the scraping port to the scraping position; A planting rod is provided which operates in synchronization with the seedling feeding device and the seedling extrusion rod to plant the seedlings supplied to the scraping port in the field, and the operation phase of the seedling extrusion rods of each row is made equal. In addition, it is characterized in that the operating phases of the implanted rods of each strip are shifted from each other.

[Function 1] Since the operating phases of the seedling extrusion rods of each row are equal, the phase shift between the planting rods can be made large. The torque for driving the implantable rods varies depending on the phase of the implantable rods, so by shifting the phase of the operation of each implantable rod as described above, the torque for driving the implantable rods will interfere with each other and reach the maximum value. This prevents torque from increasing, improving durability and reducing noise and vibration.

[Example] Figures 1 to 4 show an example of a rush transplanting machine according to the present invention, and this rush seedling transplanting machine is shown.

A working machine part 4 for transplanting seedlings is attached to an elevating link device 3 installed at the rear of a running vehicle body 2 for water. An auxiliary seat 7 is provided, and several spare seedlings 8, 8 for storing seedlings for supply are provided on the side of the pilot's seat 6.

The work equipment section 4 includes a transmission case 11 that transmits power from the traveling vehicle body side via a PTOMIO, a transmission pipe 12.12 that protrudes laterally from the transmission case, a central rear portion of the transmission case 11, and a transmission pipe 12.12. A frame is made up of a branch case 13 (L, C, R) extending rearward from the tip of the case 12. i+'lhl 4 and planting rods for the number of planting rows (the illustrated example is 4 rows) 15. ...and seedling extrusion rod 16. ... is installed. The work equipment section 4 is rollably attached to the rear end of the link device 3, and is supported on the field by a center float 17 and a pair of left and right side flows 18 and 18 provided on the lower side of the frame. Ru.

The seedling stand 14 is provided so as to be inclined in the L direction of the frame so that the front part is in the first position, and is supported by a support frame 20 and a rail 21 so as to be slidable left and right.

The upper surface of the 1-tube mounting stand 14 has seedling mounting portions 14a corresponding to the number of planting rows.

..., and each seedling section is equipped with a belt conveyor-type seedling feeding device 23. ...is provided.

Each of these seedling feeding devices is driven by a common seedling feeding drive shaft. Further, at the bottom of the seedling platform 14, each seedling platform 14a,...
・Scraping port 24 corresponding to . ... is formed on the receiving plate 25.
is fixedly installed. By reciprocating the seedling platform 14 from side to side using a transverse feed mechanism provided in the transmission case 11, the seedlings in the bottom row on the seedling platform are sequentially supplied to the scraping port 24, and the bacteria in the bottom row are removed. When all of the seedlings have been supplied to the scraping port 24, the seedling feeding device 23 is activated to transport the seedlings one row downward.

As shown in FIG. 3, the implantable rod 15 has a rear end connected to a swing link 31 rotatably attached to the support shaft 30 of the one-branch case 13, and is connected to the implantable rod drive shaft 32. The intermediate portion is connected to an attached crank 33, and when the crank 33 rotates in the direction of the arrow, the entire implanted rod moves up and down in a predetermined trajectory, and a pair of claws 15a provided at the tip, At 15a, the seedlings supplied to the scraping port 24 are held and planted in the field.

In the illustrated example, one implantation rod 15 is provided on both left and right sides of the central branch case 13 (C) and on the inner side of each of the outer branch cases 13 (L, R). As will be described later, the inner implanted rod 15 (C.

C) and the outer implantable rods 15 (L, R) have the same operating phase, and the inner implantable rods 15 (C, C
) has an operating phase 80 degrees earlier than that of the outer implanted rods 15 (L, R).

The seedling extrusion rod 16 is attached to the branch case 13 as shown in FIG.
A cylindrical body 41 projects in the −L direction from a cam case 40 that is rotatably supported by the cam case 40 , and its tip portion faces the lower end of the seedling stand 14 on a rotating shaft 43 of a mounting plate 42 fixed to the cylindrical body. A seedling extrusion fan 45 is attached as shown. The cam case 40 houses an extrusion cam 46 having a predetermined shape. Further, a sliding body 47 is slidably fitted inside the cylindrical body 41, and the head of the retaining bottle 50, which is biased by a spring 49 that is loosely fitted into the recess 47a of the sliding body, is pushed into the extrusion cam. It is in sliding contact with the outer peripheral surface of 46. A lever 51 is provided between the base of the seedling pushing wind 45 and the upper end of the sliding body 47 to transmit the operation of the sliding body 47 to the seedling pushing wind 45. When the extrusion cam 46 rotates in the direction of the arrow, the sliding body 47 moves along the cylindrical body 41, and the seedling extrusion air 45 swings up and down. When the head of the retaining bin 50 is in contact with the large diameter part of the pushing cam 46, the seedling pushing wind 46 pushes out the seedlings to the scraping opening 24, as shown by the solid line in FIG. 4(a). When the head of the engagement pin 50 is in contact with the small diameter portion of the extrusion cam 46, it is in a state before extrusion as shown by the chain line in the figure.

Further, a longitudinally movable cam 53 having a predetermined shape is provided on the side of the cam case 40, and a cam follower 5 that engages with the longitudinally movable cam 53 has a predetermined shape.
4 is integrally attached to the cam case 40. Note that the cam follower 54 is urged in a predetermined direction by a spring 55.

By rotating the longitudinal cam 53 in the direction of the arrow, the fourth
As shown in FIGS. (a) and (b), the entire seedling extrusion rod 16 swings back and forth.

Next, FIG. 5 shows the implanted rod 15. It is a timing chart of the seedling extrusion rod 16 and the seedling feeding device 23.

Seedling feeding device 23. ... are driven by a common drive shaft, so each strip is synchronized. Seedling extrusion rod 16. ... are also synchronized, and the seedling extrusion wind 45 of the seedling extrusion rod 16 is
When the operation of the seedling feeding device 23 is completed, it moves forward toward the seedling platform 14, and after this forward movement is completed, it moves downward to the position of the scraping port 24, and after stopping there for a certain period of time, it moves backward and upward. Do this at the same time to return to the original position. The timing of this return is set to be the same as or slightly earlier than the operation start timing of the seedling feeding device 20. The states of the seedling pushing rod 16 in FIG. 3 are the states of the timings of ■, ■, and ■ in this timing chart. Shipped rod 1
5. ... has a phase difference between the rows as described above, but the seedling extrusion rod 16. ... is the scraping opening 24.・・・
・While stopped at the position, all the implanted rods 15, . . . are exposed to the scraping opening 24. It is designed to pass through and hold the seedlings. At this time, since the seedlings are forcibly pushed out to the scraping opening 24 by the seedling extrusion rod 16, the claws 15a, 15a of the planting rod can securely hold the seedlings.

The states (■, ■, ■) of the implanted rod 15 in FIG. 4 correspond to the timings (■, ■) in this timing chart.

In this example, the solid line indicates the outer stud rod, and the chain line indicates the inner stud rod.
The implanted rods of the row are divided into two groups, an inner group and an outer group, and a phase difference of 80 degrees is provided between each group, but depending on the case, a larger phase difference can be provided. The reason why the 0 phase difference is set to 80 degrees becomes clear from the time chart of the implanted rod drive shaft torque shown in FIG. That is, in the torque curve of each implantable rod drive shaft, approximately half the period is the claw 15a,
15a passes through the scraping port 24, which is a mountain-like high-level region, and the remaining half cycle is a low-level region with almost no fluctuations. Therefore, if the phase difference between the two inner groups is shifted by about 80 degrees, when the torque of one group is maximum, the torque of the other group is at a low level, and the total torque is the sum of the torques of each drive shaft. The curve ΣT has a relatively wide distribution of high-level regions and does not stand out locally at the time of maximum torque.
It is obvious if you compare the maximum torque with ΣTmax(1) and ΣTmax(2).
Tma,x(1)>Tmax(2).

In this example, the two inner stud rods and the two outer rods have the same phase, and a phase difference is provided between the inner and outer rods, but all the rods have the same phase. The same applies to multi-row transplanters other than the four-row transplanter, in which the phases of the rows may be different.

[Effect of the invention] As explained above, the seedling transplanting machine according to the present invention has the following effects:
By making the phases of the seedling extrusion rods of each row equal, it was possible to increase the phase shift between the planting rods, and the maximum torque for driving the planting rods could be kept low. This not only reduces noise and vibration during operation, but also improves durability.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the seedling transplanter according to the present invention, FIG. 2 is a plan view thereof, and FIGS. 3(a) and (b). (C) is a side view showing different states of planting, Figures 4 (a) and (b) are side sectional views showing different states of the seedling extrusion rod, and Figure 5 is the planting rod and seedling extrusion. A timing chart of the rod and the seedling feeding device, and FIG. 6 is a timing chart of the torque of the planting rod drive shaft. Also. FIG. 7 is a timing chart of the planting rod, seedling pushing rod, and seedling feeding device of a conventional seedling transplanter, and FIG. 8 is a timing chart of the torque of the planting rod drive shaft. L... Seedling transplanter, 2... Traveling vehicle body, 3... Link device, 4... Working machine part, 14... Seedling mounting stand, 15
... Planting rod, 16... Seedling extrusion rod, 23... Seedling feeding device, 24... Scraping port. Section 4111(a)

Claims (1)

[Claims] (1) A seedling tray on which rush seedlings are placed, a scraping opening provided at multiple locations below the seedling tray corresponding to the planting row, and a seedling on the seedling tray in the direction of the scraping opening. A seedling feeding device that transfers intermittently and operating in synchronization with the seedling feeding device to forcibly push out the seedlings on the seedling stand that have been transferred directly above the scraping opening to the position of the scraping opening. A seedling extrusion rod, and a planting rod that operates in synchronization with the seedling feeding device and the seedling extrusion rod to plant the seedlings supplied to the scraping port in the field, A rush transplanting machine characterized in that the operating phases of the planting rods of each row are shifted from each other while the operating phases are made equal.