JPS6260042B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a seedling planting device for a rice transplanter.

Conventionally, this seedling transplanting device has a planting arm shaft protruding from both sides of a transmission case containing a drive mechanism, and a planting arm with planting claws mounted on both ends of the arm shaft. Multiple sets are to be attached to the fuselage.

Therefore, conventional seedling transplanting devices require one drive mechanism for one set of planting claws, and especially in the case of a multi-row type rice transplanter, many drive mechanisms are required, resulting in a complicated structure. It became.

The present invention was invented in view of the above points.
One planting arm shaft 11 with three or more cranks 14 is formed, and the planting arm shaft 11 is mounted on the body, and three or more planting arms 16 with planting claws 15 are formed. are independently swingably supported on each crank 14 of the planting arm shaft 11,
The planting arm shaft 11 is linked to a drive device so that each planting arm 16 is driven by driving one planting arm shaft 11, while the planting arm shaft 11 is connected to the machine body. A driven arm shaft 19 is installed parallel to the shaft 19, and a plurality of driven arms 20 are pivotally supported on the shaft 19, and the free end of each planting arm 16 is connected to the free end of each driven arm 20. The driven arm shaft 19 is pivotably connected, and the position of each of the driven arm pivot positions on the driven arm shaft 19 relative to the aircraft body can be changed, thereby simplifying the drive mechanism. The pivoting locus of the planting claw can be easily adjusted by changing the position of each of the driven arm pivot points relative to the machine body.

Next, details of the present invention will be explained based on embodiments shown in the drawings. First, Figures 1 and 2 show a side drive type seedling planting device as an example of the present invention, and in each figure, 1 is a transmission case, and 2 is a support frame arranged opposite to the case 1. The transmission case 1 and the upper part of the support frame 2 are connected by a support tube 4 having a transmission box 3 in the middle, and a mounting pipe 5 is provided protruding from the box 3. The entire device is connected and supported to the body of the rice transplanter.

In addition, an input shaft 6 that is linked to the body of the rice transplanter is inserted into the pipe 5, and a bevel gear 7 is provided at the end of the input shaft 6 inside the transmission box 3.
A drive shaft 8 is inserted into the one support cylinder 4, a bevel gear 9 is fitted to the end of the shaft 8 inside the transmission box 3 so as to mesh with the bevel gear 7, and A drive gear 1 is attached to the other end of the drive shaft 8.
0 is provided to transmit rotational power from the body of the rice transplanter to the drive gear 10 in the transmission case 1 via the input shaft 6, bevel gears 7, 9, and drive shaft 8.

Furthermore, a planting arm shaft 11 is installed between the lower part of the transmission case 1 and the support frame 2, and the arm shaft 11
The driven gear 12 is fitted into the end inside the transmission case 1, and the driven gear 12 and the driving gear 10 are connected to each other.
A chain 13 is suspended in between to transmit rotational power from the rice transplanter to the arm shaft 11.

A plurality of cranks 14 are formed on the planting arm shaft 11, and each crank 14 pivotally supports a planting arm 16 having a planting claw 15, and supports the transmission case 1. A bracket 18 having a long hole 17 formed therein is provided protrudingly from each lower end of the frame 2.
7 between the driven arm shaft 19 and the planting arm shaft 11
A plurality of driven arms 2 are installed on the arm shaft 19 in parallel with the arm shaft 19, and the installation position thereof can be changed.
0 is pivotally supported, and the free end of each driven arm 20 is pivotally connected to the free end of the planting arm 16.

Each crank 14 of the planting arm shaft 11 is positioned so that adjacent cranks 14 face each other,
For example, when one crank 14 is located above, the other crank 14 is formed to be located below,
Planting claws 15 provided on each crank 14 allow seedlings to be planted at predetermined intervals. Further, a weight 14a is formed on this crank 14 so as to be balanced with the planting arm 16 side.

In the figure, reference numeral 21 denotes an auxiliary frame protruding from the transmission box 3, and the frame 21 is intended to support the intermediate portions of the planting arm shaft 11 and the driven arm shaft 19.

By the way, although the side drive type seedling planting device has been described above, the present invention can be used in a center drive type device.

That is, as shown in FIG. 3, the transmission case 1
is placed in the center, and support frames 2, 2 are provided on both sides of the case 1 via support tubes 4, 4, while a plurality of cranks 14 are provided between each support frame 2, 2 for planting. The arm shaft 11 is mounted on a shaft, and is passed through the transmission case 1 so that the central part in the length direction of the planting arm shaft 11 is supported by the transmission case 1.
A planting arm 16 having a planting claw 15 is pivotally supported on each crank 14 of 1, and the arm shaft 11 and the planting claw are connected by a driven gear 12 fitted on the arm shaft 11 in the transmission case 1. The rotational power may be transmitted to 15. In addition, the planting arm 1
A driven arm shaft 19 that pivotally supports the driven arm 20 of No.6.
Alternatively, as shown in FIG. 3, the portion facing the float 23 etc. may be concavely curved upward 19a. Further, as a means for adjusting the swing locus of the planting pawl 15, round holes 22 are formed in the support frames 2, 2 and the transmission case 1 at locations where the driven arm shaft 19 is supported, and one of the support frames 2 is provided with a round hole 22. A receiving plate 24 is fixed to the outside as shown in detail in FIG.
A bolt 26 protruding from the fourth side is inserted into an arcuate long hole 28 formed in the swing plate 25, a nut 27 is screwed into the bolt 26, and the driven arm shaft is rotated by rotating the swing plate 25. 19 is rotated to change and adjust the swing locus of the planting claws 15.

The above seedling planting device operates as follows.

First, the rotational power transmitted from the machine body is transmitted to the transmission case 1 via the transmission box 3, and is transmitted to the planting arm shaft 11 via each gear 10, 12 and chain 13 in the case 1, and then Each crank 14 of the arm shaft 11 performs circular motion around the arm shaft 11. Along with this, the planting arm 16 rotates, but since the free end of this arm 16 is pivotally supported by the driven arm 20, the planting claw 15 of the planting arm 16 has an oblong swinging trajectory. Then, the seedlings are planted one after another in the field.

Further, when it is desired to change the swing locus of the planting claw 15, the driven arm shaft 19 is moved along the elongated hole 17 formed in the bracket 18 of the transmission case 1 and the support frame 2. Furthermore, the third
In the case shown in the figure, the driven arm shaft 19 is rotated by the rotation of the swing plate 25 as described above.

As explained above, according to the present invention, by driving one planting arm shaft 11, the planting arms 16 are individually supported in a swingable manner by three or more cranks 14 provided on the arm shaft 11. Therefore, by simply providing one drive mechanism that interlocks the planting arm shaft 11 and the drive device, the drive mechanism in the planting section can be significantly simplified compared to conventional seedling planting devices. In addition, the free end of each driven arm 20, which is pivoted to a driven arm shaft 19 provided on the body parallel to the planting arm axis 11, is pivoted to the planting arm 1, and the Since the position of the pivot position of the driven arm shaft 19 with respect to the machine body can be changed, the swing locus of each planting claw 15 with respect to the machine body and the position of all three or more planting claws 15 with respect to the machine body can be adjusted individually. Adjustments can be made all at once and easily.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a partially cutaway front view of a side drive type seedling planting device, FIG. 2 is a side sectional view thereof, and FIG. 3 is a partially cutaway side view of a center drive type seedling planting device. The front view and FIG. 4 are partially enlarged side views. 11... Planting arm shaft, 14... Crank, 15...
Planting claw, 16... Planting arm, 19... Driven arm shaft, 20... Driven arm.

Claims (1)

[Claims] 1 One planting arm shaft 11 with three or more cranks 14 is formed, and the planting arm shaft 11 is mounted on the body, and three or more plantings with planting claws 15 are formed. The arm 16 is connected to the planting arm shaft 11
Each of the planting arms 16 is supported by each of the cranks 14 so as to be swingable separately, and the planting arm shaft 11 is linked to a drive device, so that each of the planting arms 16 is driven by one planting arm shaft 11. On the other hand, a driven arm shaft 19 parallel to the planting arm shaft 11 is installed on the body, and a plurality of driven arms 20 are pivotally supported on the shaft 19, and each driven arm 20 is The free end of each planting arm 16 is pivotally connected to the free end of the driven arm shaft 1.
9. A seedling planting device characterized in that the position of each of the driven arm pivot positions in reference to the machine body can be changed.