JPH0328735Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a seedling planting device that can change the number of seedling planting rows. The present invention relates to a seedling planting device that is equipped with a plurality of planting claws for planting in a field, and a clutch for planting a small number of rows that divides the drive of the plurality of planting claws into a plurality of groups and stops each one separately.

[Prior art]

In general, when using a small-row planting clutch, you want to plant fractions before the final planting of all rows at the edge of the field, and as the machine moves back and forth, a few rows are planted on the right side of the machine. This may be done by cutting the planting clutch, or by cutting the left clutch for small-row planting. Therefore, in order to meet these demands, conventionally, each clutch for planting a small number of rows has been constructed so that it can be operated independently using its respective operating lever (for example, Japanese Utility Model Application No. 59-42118).

[Problem that the invention attempts to solve]

However, with a structure in which each clutch for planting a small number of rows is individually operated, the corresponding clutch lever must be selectively operated depending on whether fractions are planted from the right side or from the left side. Furthermore, when the final planting process for all rows is started after fractional planting, it is necessary to enter and operate each clutch for planting a small number of rows that was cut during fractional planting, which is cumbersome in terms of operation. .

The purpose of the present invention is to make it possible to plant any number of rows with a single lever by devising a connecting mechanism between the clutch for planting a small number of rows and the operating lever.

[Means for solving problems]

The characteristic structure of this invention to achieve the above purpose is as follows:
When each of the clutches for planting a small number of rows and one control lever are operated in one direction, with the center of the operating range of the control lever as the border, the clutch for planting a small number of rows on one side of the machine is disengaged, and when the clutch is operated in the other direction, the clutch for planting a small number of rows on one side of the machine is disengaged. The clutch for planting a small number of rows on the other side of the machine is disengaged, and the clutch for planting a small number of rows on the outermost side of the machine is disengaged by the first stage operation of moving away from the center position. The clutch for planting a small number of rows is connected through a linkage mechanism that can be disengaged.

[Effect]

When the control lever is operated in one direction, the first step of the operation disengages the clutch for planting a few rows on one side of the machine, and the subsequent operation of the second step disengages the clutch for planting a few rows on the center side of the machine. Furthermore, when the control lever is operated in the other direction, the first step of the operation disengages the clutch for planting a small number of rows on the other side of the machine, and the subsequent second step disengages the clutch for planting a small number of rows on the center side of the machine. .

Therefore, by operating the lever according to the number of rows to be planted and whether to release the right or left clutch for planting a small number of rows in the direction of movement of the machine or depending on the field conditions, fractional planting can be performed with a single lever operation. .

[Effect of idea]

Therefore, the clutch for planting a plurality of rows or a small number of rows can be turned on and off by operating a single lever, and the work efficiency for planting fractions can be improved.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 4 and FIG. 2, it is equipped with a pair of left and right front wheels 1, 1 that can be driven and rotated and whose direction can be changed, and a pair of left and right rear wheels 2, 2 that can be driven and rotated, and an engine 3 and a transmission case. Six pine-shaped seedlings W are placed side by side in the rear of the passenger vehicle body, which is located in front of the driver's seat 5 and at the front end of the vehicle body, and the seedlings W are horizontally reciprocated at a constant stroke. An inclined seedling platform 6, six planting claws 7 that take out one seedling from the bottom end of each pine-shaped seedling W and plant it in the field as it circulates up and down, and a horizontally appropriate A seedling planting device 9 equipped with three floats 8 and the like arranged in parallel at intervals is connected so as to be able to rise and fall via upper and lower lifting links 10a and 10b, and is further provided with a hydraulic cylinder 11 for lifting and lowering the seedling planting device. is arranged so that the lifting links 10a and 10b can be operated to swing up and down with respect to the vehicle body, and six seedlings are sequentially planted as the vehicle advances,
In addition, in order to maintain a constant planting depth and to avoid contact of the seedling planting device 9 with the ground when driving on a headland or on the road, the seedling planting device 9 is attached to the vehicle body. It is designed to be able to be raised and lowered.

To drive the seedling planting device 9, as shown in FIG. The input shaft 14 of the transmission case 13 for driving the device is interlocked and connected via a transmission shaft 15 with a universal joint that allows the seedling planting device 9 to move up and down. A planting clutch 16 that intermittents the drive of
is provided. A sliding shaft 17 for driving a seedling stand is attached to the transmission case 13 for driving the planting device.
are penetrated and supported so as to be slid at a constant stroke, and the claw drive transmission shaft 18 and three drive shafts 19 for each two adjacent planting claws 7 of the six planting claws 7 are interlocked. Three chains 20 to be connected are provided, and each chain 20
Three clutches 22A for small-row planting, with each input sprocket 21 serving as a fixed clutch piece;
22B and 22C are provided.

The clutches 22A, 22B, 2 for planting a few rows
2C, as shown in FIGS. 1 and 2, each input sprocket 21 is provided on the transmission shaft 18 so as to freely rotate, and each movable sprocket 2C is connected to the transmission shaft 18 by a spline on the side of each input sprocket 21. A clutch piece 23 is provided so that the drive of the input sprocket 21 can be switched on and off.

Each of the small number clutches 22A is configured to be operable by a single operating lever 24 via a linkage mechanism A, which will be described below.

That is, as shown in FIG. 1, there is a fork 25 that operates the movable clutch piece 23 elastically biased toward the clutch engagement side toward the clutch disengagement side, an operating arm 27 extending from the rotating shaft 26 of the fork 25, and a left and right operation. a rod 28 connecting the arms 27, 27;
a swinging arm 29 connected to the intermediate portion of the rod 28 for swinging the central operating arm 27;
L-shaped link 3 for moving the rod 28 left and right
0, a rod 31 connecting the L-shaped link 30 and the operating lever 24, and the left and right operating arms 2.
7, 27 and the rod 28, and a long hole C'' provided in the connection between the central swing arm 29 and the rod 28. There is. The elongated hole C'' formed in the central swing arm 29 is formed in such a size that the pin 28b on the rod 28 side contacts when the operating lever 24 is operated to the b position and the b' position. A long hole C'' formed in the left operating arm 27 is formed in such a size that the pin 28c on the rod 28 side contacts when the operating lever 24 is operated to the a position, and a long hole C'' is formed in the right operating arm 27. long hole
C' is formed in such a size that the pin 28a on the rod 28 side comes into contact when the operating lever 24 is operated to the a' position.

Therefore, when the lever 24 is operated from the center of the swing operation range to position b on the front side, only the right small number row planting clutch 22A on one side of the fuselage is disconnected, and when the lever 24 is subsequently operated to position a, the right side While maintaining the cut state of the small number row planting clutch 22A on the center side of the machine,
B is cut. When the lever 24 is operated to the rear position b', only the clutch 22C for planting a few rows on the left side on the other side of the machine is disengaged, and when the lever 24 is subsequently operated to the position a', the clutch 22C for planting a few rows on the left side is operated. The clutch 22B for planting a small number of rows on the center side of the machine body is operated to cut while maintaining the cutting state.

Further, each sprocket 21 is provided with a disc-shaped member 33 that rotates integrally with the locking piece 32 connected to the left and right forks 25, 25 and the central operating arm 27 when the clutch is disengaged,
Furthermore, the planting claw 7 is attached to the disk-shaped member 33.
When the input sprocket reaches a specific phase, a notch 34 is provided to engage the locking piece 32, as shown in FIG. 21 can be stopped only when the planting claws 7 reach a specific phase.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling planting device according to the present invention, FIG. 1 is a partially cutaway plan view showing the interlocking relationship between the operating lever and each clutch for planting a small number of rows, and FIG. 2 is a diagram of the planting device. Figure 3 is a schematic plan view showing the transmission structure; Figure 3 is a partial longitudinal side view of the planting transmission case;
The figure is an overall side view of the rice transplanter. 6... Seedling stand, 7... Planting claw, 22A, 22
B, 22C...Clutch for planting a few rows, 24...
Operation lever, A...linkage mechanism.

Claims (1)

[Scope of utility model registration request] It is equipped with a plurality of planting claws 7 for taking out seedlings from a seedling platform 6 that reciprocates left and right and planting them in the field, and the driving of the plurality of planting claws 7 is divided into a plurality of groups and stopped individually. In a seedling planting device equipped with clutches 22A, 22B, 22C for planting a small number of rows, each of the clutches 22A, 22B, and 22C for planting a small number of rows and one operating lever 24 are connected to each other.
With the center of the operating range as the border, operating it in one direction will disengage the clutch 22A for planting small numbers of rows on one side of the machine, and operating it in the other direction will disengage the clutch 22C for planting small numbers of rows on the other side of the machine, and the center position Through the linkage mechanism A, the first stage operation of moving away from the machine releases the clutch 22A or 22C for planting a small number of rows on the outermost side of the machine body, and the subsequent second stage operation disengages the clutch 22B for planting a small number of rows on the center side of the machine body. A seedling planting device connected to the