JP2530298B2 - Planting device with rotary planting arm - Google Patents

Description

TECHNICAL FIELD The present invention relates to a planting device using a rotary planting arm.

(Prior Art) A static locus drawn by a planting claw of a planting arm that is driven by a rotary case with a conventional planetary gear mechanism is curved by one side, and the other is a closed elliptical closed loop curve closer to a straight line. Has become.

(Problems to be Solved by the Invention) In the rotary planting arm that draws an elliptic closed loop curve as described above, the rotary case radius corresponds to the conventional four-joint link crank arm, and this is the crank arm radius. Since it is larger than that of the plant, the hole of the planting trace becomes large and it becomes a basis for disturbing the planting posture.

(Means for Solving the Problems) Therefore, the technical problem of the present invention is to obtain a rotary planting arm having a small planting hole, and a technique of the present invention for solving the technical problem. The target means
A rotary case having a planetary gear mechanism composed of a sun gear, an intermediate gear, and a planetary gear is provided, and a moving locus drawn by a planting claw of a planting arm driven by the rotary case is a gear ratio between a traveling speed and a stock change gear ratio. In order to draw a cross-shaped locus from the above, in a planting device in which each gear in the planetary gear mechanism is composed of an eccentric gear, the locus of movement of the tip of the claw drawn by the planting claw is curved by one, and the other is In a static locus that is a closed elliptical closed loop curve closer to a straight line,
Adjust the mounting phase of the sun gear to the rotary case, and adjust the phase position of the planting arm to the rotary case so that the trajectory after planting will be inclined backward with respect to the traveling direction. It is a planting device using a rotary planting arm characterized by being configured.
Here, the speed change gear ratio means the number of planted lines per unit traveling speed (actual rotation).

(Effects of the Invention) The technical means of the present invention is provided with a rotary case having a planetary gear mechanism including a sun gear, an intermediate gear, and a planetary gear, and a movement of a planting claw of a planting arm driven by the rotary case. A planting device in which each gear in the planetary gear mechanism is composed of an eccentric gear so that the locus draws an intersecting type locus from the speed change gear ratio between the traveling speed and the stock shift, and the pawl drawn by the planting pawl In the static locus, the movement locus of the tip is curved by one side and the other side is a closed elliptical closed loop curve that is closer to a straight line, and the locus after planting inclines backward with respect to the traveling direction. Adjust the mounting phase of the sun gear to the rotary case to draw a locus like this,
Since the configuration is such that the phase position of the planting arm with respect to the rotary case is adjusted, in the conventional rotary planting arm that draws a closed loop curve of an ellipse, the rotary case radius corresponds to the conventional four-joint link crank arm. However, since this is larger than that of the crank arm, the hole of the planting trace becomes large and it becomes the basis for disturbing the planting posture, but according to this technical means, the movement trajectory of the planting claw and the traveling speed are The cross type locus is drawn from the gear ratio with the stock change, but since the locus after planting in the static locus is tilted rearward with respect to the traveling direction, the movement due to forward movement is performed. In the locus after planting the locus, the removal of the planting claw from the ground is performed almost perpendicular to the ground and without inclining to the front so much, so the grounding holes on the ground become smaller and the planting seedlings become smaller. The posture of The planting claws can be pulled out of the ground without leaning too much toward the front and can be almost perpendicular to the ground, and therefore the planting holes should be small. It has the excellent feature that the planted seedlings have a large and stable posture.

(Example) An example shown in the drawings will be described below.

In FIGS. 5 and 6 showing another planting arm before the present invention, the sprocket (3) of the drive shaft (2) in the sprocket and the drive chain case (1) from the lateral transmission gear case (not shown) of the seedling table is shown. The drive shaft (2) is driven by a chain stretched between (1) and (2).

A drive arm (4) is directly connected to the drive shaft (2), and 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 to the shaft (7), and the intermediate gears (10) and (10) of the intermediate shafts (9) and (9) are meshed with the sun gear (8). (11) The planetary gears (12) and (12) of (11) are meshed.

The shafts (11) (11) of the planetary gears (12) (12) are fixed to the left end planting arms (13R) (13R '), and the right end planting close to the drive arm (4). Arm (13L) (1
3L ') is supported by a cam drive shaft (6) supported by a drive arm (4).

The central planting arms (13S) (13S ') are attached to the connecting pipes (14) (14) together with the left and right planting arms. (15) in FIG. 6 is a sun gear phase adjusting member, which is fixed to the frame (35) having the drive chain case (1). Next, each of the planting arms will be described. In FIG. 8, a fixed claw (16) is attached to the case (40), and a push rod (18) for pushing the push claw (17) is provided with a guide ( It reciprocates along 19).

The push rod (18) receives the money (20) on the case (4
The spring (21) supported in (0) abuts,
The pushing claw (17) is constantly urged in the direction of pushing.

Push lever (2) that engages with groove (20a) of receiver (20)
2) swings about the shaft (23), but the cam lever (24) of the push lever (22) swings by the cam (25), so that the push lever (22) resists the spring (21). ) Back.

Therefore, when the planting arm (13) rotates with respect to the cam (25) of the cam drive shaft (6), the cam lever (24) swings by the cam (25) and pushes through the push lever (22). The rod (18) can be reciprocated.

Thus, the rotation of the drive arm (4) causes the rotary case (5) to rotate via the cam drive shaft (6), causing the planting arm (13) to rotate in accordance with the closed loop curve. As described above, the cam drive shaft (6) is stretched between the drive arm (4) and the rotary case (5), and the rotary case (5) is mounted on the drive arm (4) via the cam drive shaft (6). It can be rotated.

Intermediate gear (10) (1) in the rotary case (5)
0) has the same number of teeth as the sun gear (8), and the planetary gears (12) and (12) also have the same number of teeth as the sun gear (8), so that the rotary case (5) has a cam drive shaft (6). ), The sun gear (8) that cannot rotate with respect to the frame (35)
With the rotation of the rotary case (5), the intermediate gears (10) and (10) meshing with the shaft rotate in the same direction by the same rotation angle as the rotation angle of the rotation.

This intermediate gear (10) (10), planetary gear (12) (12)
The planetary gear shafts (11) (11) that are interlocked with each other are rotated by the rotation of the intermediate gears (10) (10) so that the rotary case (5)
Because it rotates in the direction opposite to the rotation direction of, the planetary gear shaft (11)
The planting arm (13) directly connected to (11) will pivot around the drive shaft (2) in a posture in which the planting arm is oriented toward the seedling mounting table. When descending the facing side from top to bottom, after splitting only one seedling from the seedling mat on the seedling mounting table at the tip of the planting claw, seedlings are planted in the field scene at the lower limit of the descending. is there.

Since the sun gear (8), the intermediate gear (10), and the planetary gear (12) are all eccentric as shown in FIG. 9, the closed loop of the motion locus of the claw tip is curved by one and the other is It becomes a closed elliptical closed loop curve near a straight line. In this closed loop, the locus after planting, which is close to a straight line, is slightly inclined rearward with respect to the traveling direction.

In the case of the multiple planting arm as described above, the cam shaft (6) is taken out from the rotary case (5) or the drive arm (4), and the planting arm (13) swings around it. Each planting arm (13) is provided with a cam (25), a push lever (22) and a cam lever (24).

The flange (26) fixed to the shaft (11) is fixed to the flange (27) of the planting arm (13) with bolts (28), and the flanges (29) at both ends of the connecting pipe (14) are fixed. )
The flange (27) of each planting arm (13) is fixed to the (29) with a bolt (28).

Further, the shaft cylinder (30) on the side of the drive arm (4) also has a flange (31), and the flange (2) of the planting arm (13) is attached to this.
7) is fixed with bolts (28).

The cam drive shaft (6) supports the planting arm through the bearing (a), and the barrel (30) is supported by the cam shaft (6) through the bearing (b).

By the way, as shown in FIG. 3, the axial center locus (G) of the planetary gear draws a circular motion, but has a certain angle (AZ1) (AZ2) with respect to the vertical line (H) passing through this center (O). The straight line is used as the reference line (K) (N) of the planting nail. Here, the reference lines (K) and (N) refer to the case of the forced extrusion claw and the block claw, respectively.

A straight line (P) (Q) having angles ADD1 and ADD2 centered on a point intersecting the trajectory (G) from each reference line (K) (N)
Assuming that the distance from the upper point (L) (M) to the claw tip (S) (T) is RR1 and RR2, each reference line and the gear in the rotary case are almost in the direction of maximum eccentricity as shown in FIG. It will be the matching position.

This maximum eccentricity indicates the condition when the axes of the sun gear, intermediate gear, and planetary gear are aligned and in the same direction, and at positions deviated from this state they are aligned. There is no such thing.

ADD is the mounting angle of the planting arm with respect to the rotary case, and the angle AZ at this time is the starting angle of the planting claw.

Whether the closed loop curve is tilted or upright is determined by changing the mounting phase of the sun gear to the rotary case, and the vertical trajectory can be changed by changing the phase position of the planting arm with respect to the rotary case. .

 FIG. 2 shows the above various adjustment states.

Here, when ADD is smaller than 180 °, the upper part of the locus is wide and the lower part is narrow.

The narrowing of the lower part in this way means that the planting claw comes out of the ground quickly and the planting hole becomes small.

Figure 7 shows one of the planting arms after the seedlings have been picked and the other planting arm after the planting when ADD is 127 ° and AZ is 304 °. The gears in the rotary case are aligned in a row. This is the side view of the rotary case in the vertical position, that is, the position where the planting claws of both arms are parallel to each other.

Figure 1 is a plot of the static locus by the above-mentioned planted arm at regular intervals. The top dead center is 56 ° and the bottom dead center is 295 ° with 0 ° as the base point. The trajectory is shown on the left.

This trajectory is 50, 60, 70, 80, 90 from the left.
It shows the case of 100 strains and 100 strains, and it becomes a cross-type locus with more than 60 strains. In this crossover type locus, the planting claws are pulled out of the ground almost perpendicularly to the ground and without inclining forward so much that the planting holes on the ground are small and the posture of the planting seedlings is small. Stabilize.

In any case, the moving locus of the planting claw can draw a cross-shaped locus from the gear ratio between the running speed and the stock change, and the running speed is such that n stocks are planted for the running distance am. By setting the gear ratio between the gear shift and the stock shift (the rotation speed of the rotary case may be set), an intersecting locus can be drawn.

The 60 shares are the number of planted plants per 3.3 m ² .

[Brief description of drawings]

FIG. 1 is a trajectory diagram of the present invention. FIG. 2 is a trajectory diagram showing various adjustment states. FIGS. 3 and 4 are explanatory diagrams showing reference lines. FIG. 5 is a sectional view of a multi-planted arm. FIG. 7 is a diagram showing the relationship between the planting arm and the rotary case. FIG. 8 is a sectional view of the planting arm. FIG. 9 is an explanatory diagram of the locus.

Claims (1)

(57) [Claims] 1. A rotary case having a planetary gear mechanism including a sun gear, an intermediate gear, and a planetary gear is provided, and a moving locus drawn by a planting claw of a planting arm driven by the rotary case is a traveling speed and a stock shift. A planting device in which each gear in the planetary gear mechanism is composed of an eccentric gear so as to draw a cross-shaped locus from the speed change gear ratio of In a static locus, which is a curved elliptical closed loop curve that is curved and the other is closer to a straight line, the locus after planting draws a locus that tilts backward with respect to the traveling direction, A planting device with a rotary planting arm, characterized in that the mounting phase of the sun gear with respect to the rotary case is adjusted to adjust the phase position of the planting arm with respect to the rotary case.