JPH0418340Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a multiple planting arm in which the planting arm is a multiple type in a rotary planting device.

(Prior Art) Conventionally, in a device having a rotary planting claw as seen in Japanese Patent Application No. 60-164863, a plurality of planting arms are interlocked and connected to each other, and these are connected to a rotary planter with a planetary gear mechanism. Those that are connected to the case and driven utilize a common camshaft to operate the push lever of the square planting arm.

Each of the planting arms is connected by a connecting pipe to form a multiple planting arm.

(Problem to be solved by the invention) In the multi-connected planting arms as described above, in order to connect the planting arms with the connecting pipe, the planting arms are bolted together using the connecting flange of the connecting pipe. It is connected with.

By the way, in the case of multiple planting arms, it is necessary for each planting arm to accurately follow the same trajectory.

However, with the above structure, variations occur between the arms due to manufacturing tolerances.

This variation causes a problem in that the amount of cutting of seedling pine is different for each arm.

(Means for solving the problem) Therefore, the technical problem of the present invention is to create a multiple planting arm in which each planting arm can accurately follow the same trajectory. The technical means of the present invention to solve this technical problem is to interlock and connect a plurality of planting arms each having a rotary planting claw, and to drive these by connecting them to a rotary case with a planetary gear mechanism. The planting arm and the connecting pipe are connected in an inro type, and the bolts that connect the flange of the connecting pipe and the planting arm are formed into blank holes or long holes, so that the flange and the planting arm can be connected. It is possible to rotate the attached arm by a small angle.

(Effect of the invention) According to this technical means, the planting arm uses a blank hole or an elongated hole for the connecting flange.
Since it is possible to rotate by a minute angle, this rotation can absorb variations in each planting arm and ensure that the same amount of seedling pine is cut in each row and each arm.

Further, since the rotation can be made on the inro, concentricity between the connecting flange and the planting arm can be ensured, and dimensional accuracy of the planting arm unit can be ensured.

(Example) The embodiments shown in the drawings will be described below.

In FIG. 2, a drive shaft is driven from a transverse feed gear case of a seedling stand (not shown) via a sprocket and a chain, and a tension frame is installed between the sprocket and the sprocket 3 of the drive shaft 2 in the planting drive case 1. The drive shaft 2 is driven by the chain.

A drive arm 4 is directly connected to this drive shaft 2,
A cam drive shaft 6 is stretched between the drive arm 4 and the rotary case 5.

The rotary case 5 has a sun gear 8 fitted on a shaft 7, with which intermediate gears 10, 10 of intermediate shafts 9, 9 mesh, and planetary gears 12, 12 of shafts 11, 11 mesh with it. ing.

The shafts 11, 11 of the planetary gears 12, 12 are fixed to the left end planting arms 13R, 13R' as described later, and the right end planting arms 13L, 13L' close to the drive arm 4 are fixed to the left end planting arms 13R, 13R'. Drive arm 4
The cam drive shaft 6 is supported by a cam drive shaft 6 supported by the cam drive shaft 6.

The central planting arms 13S, 13S' are connected to the left and right planting claw cases by a connecting pipe 14 as described later.

In addition, 15 in FIG. 3 is a sun gear phase adjustment member, and is fixed to the frame 16 in which the planting drive case 1 is located.

Next, each planting arm will be explained.

In FIG. 5, a fixed claw 16 is attached to the planting arm 13, and a push rod 18 that pushes out a push-out claw 17 reciprocates along a guide 19.

A spring 21 supported within the planting arm 13 is in contact with the receiver 20 of the push rod 18, and constantly urges the push-out claw 17 in the push-out direction.

The push lever 22 that engages with the groove 20a of the receiver 20 swings about the fulcrum 23, but the protruding piece 24 of the push lever 22 swings with the cam 25, so that the push lever 22 is moved backward against the spring 21. let

Therefore, when the planting arm 13 rotates with respect to the cam 25 of the cam drive shaft 6, the protrusion 24 swings on the cam 25, causing the push rod 18 to reciprocate via the push lever 22.

Thus, the rotation of the drive arm 4 causes the rotary case 5 to rotate via the cam drive shaft 6, causing the planting claw case 13 to rotate according to a closed loop curve.

As described above, the drive arm 4 and rotary case 5
A cam drive shaft 6 is stretched between the cam drive shaft 6 and the rotary case 5 can be rotated by the drive arm 4 via the cam drive shaft 6.

Intermediate gears 10, 1 in rotary case 5
0 has the same number of teeth as the sun gear 8, and the planet gear also has the same number of teeth as the sun gear 8, so when the rotary case 5 rotates on the cam drive shaft 6, the frame 1
As the rotary case 5 rotates, the intermediate gears 10, 10 meshing with the sun gear 8, which is not rotatable relative to the rotary case 6, rotate in the same direction by the same rotation angle as the rotation angle of the rotary case 5.

These intermediate gears 10, 10, planetary gears 12, 1
The planetary gear shafts 11, 11 interlocked via the planetary gear shafts 11, 11 rotate in a direction opposite to the rotation direction of the rotary case 5 due to the rotation of the intermediate gears 10, 10, so that the planetary gear shafts 11, 11 that are interlocked with each other through the planetary gear shafts 11, 11 rotate in the opposite direction to the rotation direction of the rotary case 5. Arm 13 is
It rotates around the drive shaft 2 while facing the direction of the seedling platform, and during this rotating movement, when descending from top to bottom on the side facing the seedling platform, the planting claws After dividing only one seedling from the seedling pine on the seedling platform at the tip, the seedling is planted on the field at the lower limit of descent.

Since the sun gear 8, intermediate gear 10, and planetary gear 12 are all eccentric as shown in FIG.
The closed loop of the motion trajectory of the nail tip is a closed loop curve with one side curved and the other side shaped like an oblique ellipse that is closer to a straight line.

Now, on the flange 26 fixed to the shaft 11,
The planting arm 13 is fixed, and the attachment portion 2 of the planting arm 13 is also attached to the flange 29 of the connecting pipe 14.
7 is fixed as described below.

In addition, a flange 3 is also provided on the shaft cylinder 30 on the side of the drive arm 4.
1, to which a mounting portion 27 of the planting arm 13 is fixed as will be described later.

That is, the end portion 3 of the shaft cylinder 11a that is integral with the shaft 11
4 is fitted into the base of the planting arm 13 in the form of an inro.

The flange portion of the bolt 33 that fixes the flange 26 and the attachment portion 27 of the planting arm 13 is formed into a blank hole or an elongated hole 32, and the planting arm 13 can rotate within the size of this hole. It is designed to be dynamically adjustable and fixed.

In addition, the flange 29 of the connecting pipe 14 and the attachment part 27 of the planting arm 13 have a bolt hole 32 in the flange 29 part that is a blank hole or a long hole,
Not only can the rotation be adjusted and fixed in the same way within the size of this hole, but the connecting pipe 1
The end portion of 4 is fitted into an inro type 34 with respect to the planting arm 13.

Furthermore, the flange 31 of the shaft tube 30 and the planting arm 13 are connected in the same manner as described above, and the end of the shaft tube 30 not only fits into the planting arm 13 in the inro type 34, but also connects to the flange 31 and the planting arm 13. The bolt holes 32 in the flange 31 connecting with the attachment arm 13 are also blank holes or elongated holes.

Therefore, the connection flange portion and the planting arm can be rotated minutely within the range of the hole or the elongated hole.

Therefore, by this rotation, the variation in each planting arm can be adjusted, and it is possible to ensure that each row and each arm cut the same amount of seedling pine.

Moreover, since it rotates on the inro, concentricity of the flange and planting arm can be ensured, and dimensional accuracy of the planting arm unit can be ensured.

In addition, in the multiple planting arm, it is quite difficult to assemble the camshaft 6 that passes through the rotary unit because multiple cams are skewered, but the first By providing a tapered portion as shown in Figures 2 and 7, the camshaft can be easily fitted into the cam hole, making assembly easy.

In addition, the drive arm shaft 35 and the cam drive shaft 6 are coupled by a pin 36, and the shaft 11 and the cam drive shaft are not coupled.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the proposed planting arm, Fig. 2 is a cutaway front view of the multiple planting arm, Fig. 3 is an external view of the same as above, and Fig. 4 shows the relationship between the rotary case and the planting arm. An explanatory diagram showing the relationship, Fig. 5 is a cross-sectional view of the planting arm, Fig. 6 is an explanatory diagram of the planting trajectory, Fig. 7
The figure shows a modification of the camshaft. 2... Drive shaft, 4... Drive arm, 5... Rotary case, 6... Cam drive shaft, 8... Sun gear, 10... Intermediate gear, 12... Planetary gear, 13
...Planting arm, 14...Connecting pipe, 16...
Fixed claw, 17... Extrusion claw, 29... Flange, 3
2...Bakahole, 33...Bolt, 34...Inro-shaped protrusion.

Claims (1)

[Scope of utility model registration request] A plurality of planting arms each having a rotary planting claw are linked together so that they can be connected and driven by a rotary case with a planetary gear mechanism, in which each planting arm is connected. In this process, the planting arm and the connecting pipe are connected in an inro type, and the bolt part that connects the flange of the connecting pipe and the planting arm is formed into a hole or an elongated hole, and a slight angle is formed between the flange and the planting arm. A multi-connected planting arm that is rotatable.