JPH07121167B2 - Rotary planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a planting arm, and in particular to two planting trajectories.
A rotary planting device having a push cam in a planting arm with one or more claws.

(Prior Art) In the conventional rotary planting device, in the planting arm that enables the push-out claw of the planting claw to advance and retreat with respect to the fixed claw by the action of the push rod by the push cam,
The push lever that pushes out the pushing claw and the cam lever and the cam that rocks the pushing claw are inside the case of the planting arm, and the cam shape of the push cam that pulls up the push rod has a cam shape that slowly pulls up.

(Problems to be Solved by the Invention) According to the planting arm in the rotary planting device as described above, since the push rod is pushed out by the push, the torque fluctuation due to the push cam is large, and the seedling of one planting arm is large. When the push rod of the other planting arm performs a pulling up operation while holding, the rotation of the planting arm shaft or backlash in the rotary case adversely affects the planting posture. Among them, the torque fluctuation is the worst when the pulling is started and when the pulling is finished. Moreover, if the shape of the push cam is a shape that slowly pulls up, the pulling operation is slow, so
Further affects the planting posture.

(Means for Solving the Problems) Therefore, the technical problem of the present invention is to obtain a rotary planting device that does not adversely affect the planting posture, and to solve the technical problem. Technical means of the invention is such that, during one rotation of a rotary case in which a planetary gear mechanism including a sun gear, an intermediate gear, and a planetary gear is installed, one rotation is made in a direction opposite to the rotation direction via the planetary gear mechanism. In the rotary planting arm whose base is provided on the planetary gear shafts at both ends of the rotary case, in the case of this planting arm, the cam shaft directly connected to the planetary gear shaft is provided, and the planting claw is provided. The push-rod pull-up shape of the push cam that acts the push rod of the push-out pawl so that the push-out pawl of the push-back can move forward and backward with respect to the fixed pawl
Pull up the push rod a little bit faster at the beginning,
After that, while making a two-stage cam shape that slowly pulls up, when the push rod of one planting arm begins to be pulled, the other planting arm is in the seedling guide and, contrary to this, the one planting arm The rotary planting device is characterized in that the timing of the action of the cam is configured so that it is performed when the other planting arm enters the paddy field at the end of pulling up the push rod.

(Effect of the Invention) According to this technical means, the push rod pulling-up operation is pulled up early in the initial stage and slowly pulled up in the middle and late stages, so that planting of seedlings is performed quickly, and In addition to pulling the push rod of one planting arm, the other planting arm is in the seedling guide, while the pulling end of the push rod of one planting arm is the other Stable planting is achieved by forming the timing of action of the cam, as is done when the rice enters the rice field.

That is, since the other arm is in the seedling guide and in the soil where the other arm is relatively unaffected, the stable planting is performed at the time when the torque variation due to the push cam is the largest.

Further, since the push rod is pulled up early in the initial stage, self-locking between the push cam and the push lever is prevented, and damage to the planting arm can also be prevented.

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

3 and 4 showing another planting arm prior to the present invention, a sprocket (3) and a sprocket (3) of a drive shaft (2) in a drive chain case (1) from a transverse gear case of a seedling table (not shown) are shown. The drive shaft (2) is driven by a chain stretched between (1) and (2).

The drive arm (4) is directly connected to the 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 to the shaft (7), and the intermediate gears (10) and (10) of the intermediate shafts (9) and (9) mesh 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) (13
L ') bears on a cam drive shaft (6) supported on 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. 4 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. 6, a fixed claw (16) is attached to the case (40), and a push rod (18) for pushing the push claw (17) is a guide ( It reciprocates along 19).

The case (13) is placed in the receiving (20) of the push rod (18).
A spring (21) supported inside abuts on the spring and urges the push-out claw (17) in a direction to always push out.

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), thereby rotating the planting arm (13) according to the closed rape curve.

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

Intermediate gears (10) (10) in the rotary case (5)
Have the same number of teeth as the sun gear (8) and also have the same number of teeth as the planetary gear and the sun gear (8). Therefore, when the rotary case (5) rotates on the cam drive shaft (6), the frame (3
The intermediate gears (10) (10) meshing with the non-rotatable sun gear (8) with respect to 5) rotate in the same direction as the rotation angle of the rotation in accordance with the rotation of the rotary case (5). .

The planetary gear shafts (11) and (11), which are interlocked with the intermediate gears (10) and (10) via the planetary gears (12) and (12), rotate the intermediate gears (10) and (10) to rotate 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, only one seedling mat on the seedling mounting table is divided at the tip of the planting claw and then seedlings are planted in the field scene at the lower limit of the descending.

Since the sun gear (8), the intermediate gear (10), and the planetary gear (12) are all eccentric as shown in FIG. 7, the closed loop of the motion locus of the claw tip is curved by one and It becomes a closed elliptical closed loop curve near a straight line.

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 calm (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 has a bolt (2) on (29).
It is fixed in 8).

In addition, the shaft cylinder (30) on the drive arm (4) side also has a flange (3
1), which has a flange (27) on the planting arm (13)
Are fixed with bolts (28).

The cam drive shaft (6) supports the planting arm via the bearing (a), and the barrel (30) includes the cam shaft (6) via the bearing (b).
Supported by.

Here, the shaft (36) is fixed to the cam shaft (6) by a pin (42).

By the way, according to the rotary planting arm as described above, since the push rod is pushed out by the push cam, the torque fluctuation due to the push cam is large.

When the push rod of the other planting arm performs a pulling up operation while holding the seedling of one planting arm, the rotation fluctuation of the planting arm shaft (cam drive shaft) and the rattling in the rotary case. Occurs, it adversely affects the planting posture. Among them, the torque fluctuation is the worst when the pulling is started and when the pulling is finished.

Therefore, in the present invention, the push rod pull-up shape of the push cam is a two-stage cam shape in which the push rod is pulled up slightly earlier at the beginning of pulling up and then slowly pulled up. Since the seedlings are quickly raised in the middle and late stages, the seedlings are planted quickly, and the seedlings are planted quickly when the torque fluctuation due to the push cam is the largest. Further stable planting can be performed by providing the period of the greatest fluctuation in the seedling guide and in the soil where the other planting arm is relatively unaffected.

FIG. 1 shows the push cam.
(C) is a cam surface that pushes out the push rod, and (D), (E), and (F) are surfaces that pull up.

In (D), a cam surface that pulls up quickly is formed, and in (E), a cam surface that pulls up slowly is formed. Further, in (G), it is an extrusion cam surface.

Of the above cams, the cam rotates in the direction of the arrow,
If the planting arm is fixed, the tip of the planting arm draws a static locus as shown in FIG.

The left side of the figure shows the locus of movement.

Then, in FIG. 2, when A is started to pull up the push rod, the other planting arm is in the seedling guide (A ′) in the 180 ° opposite section, and when B is the end of pulling up the push load, 180 In the opposite zone, as in the soil (B ') of the other planting arm, the action timing of the cam is formed in the shape of the push cam timing for performing each push pull operation of the push rod.

To this end, the push cam (25) is attached to the cam drive shaft (6) so that the male and female can be fitted on the reference line (H) passing through the punch mark (39) as shown.

That is, the fitting hole (41) of the cam (25) has a chevron protrusion (38), and the cam drive shaft (6) has a chevron protrusion (38).
Is formed with a female hole (37) having a V-shaped cross section.

However, the direction of the cam (H) is AZ as shown in Fig. 7.
It is the same as the eccentric direction at the (reference position) and is fixed to the rotary case.

Here, with respect to the vertical line passing through the center of the circular locus drawn by the axis of the planetary gear, a straight line having an angle is used as the reference line of the planting claw, which is the sun gear that constitutes the planetary gear mechanism. It is a line that coincides with the direction of maximum eccentricity of the intermediate gear and the planetary gear.

The maximum eccentricity indicates a state in which the respective axes of the sun gear, the intermediate gear, and the planetary gear are aligned in a straight line and face the same direction, and at a position deviated from this state. , Like this, they are not aligned in a straight line.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the device of the present invention, (a) shows the shape of a cam, and (b) shows the shape of a drive shaft. FIG. 2 is a locus diagram of a planting arm in the present invention. Sectional view of multiple-planting arm FIG. 4 is an external view of the same as above. FIG. 5 is an explanatory diagram showing the relationship between the above-mentioned planting arm and a rotary case. It is explanatory drawing which shows a locus with planting. (4) …… Drive arm (5) …… Rotary case (6) …… Cam drive shaft (10) …… Intermediate gear (11) …… Planetary gear shaft (13) …… Planting arm (14) …… Connecting pipe (16) …… Fixing claw (17) …… Extrusion claw (18) …… Push rod (21) …… Spring (22) …… Push lever (23) …… Push lever shaft (24) …… Cam lever ( 25) …… Cam (37) …… Female hole (38) …… Mountain protrusion (39) …… Punch mark

Claims (1)

[Claims] 1. During one rotation of a rotary case in which a planetary gear mechanism including a sun gear, an intermediate gear, and a planetary gear is installed, one rotation is made in the opposite direction to the rotation direction via the planetary gear mechanism. In a rotary planting arm whose base is provided on the planetary gear shafts at both ends of the rotary case, in the case of this planting arm, the cam shaft directly connected to the planetary gear shaft is provided, and the planting pawl is extruded. The push rod pull-up shape of the push cam that operates the push rod of the push-out nail so that the claw can move forward and backward with respect to the fixed claw is a two-stage cam shape in which the push rod is pulled up slightly early at the beginning and then slowly pulled up. In addition, when the push rod of one planting arm begins to be pulled, the other planting arm is placed in the seedling guide and, contrary to this, At the pulling end of the push rod biasing arm, as the other planting arm is performed when entering the paddy, rotary planting apparatus characterized by being configured the timing action of the cam.