JP2589011B2 - Seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides a rotary transmission case equipped with a plurality of planting arms each having a seedling planting claw, and rotating the planting arm relative to the rotary transmission case around a pivot shaft axis. It is configured to be freely movable, and as the rotation transmission case rotates, an elliptical rotation movement is performed between a cutting posture in which the planting arm cuts out the seedlings from the seedling mounting table and a planting posture in which the seedlings are planted on the field surface. A mechanism for determining the position of the planting arm relative to the rotary transmission case by rotating the planting arm relative to the rotating transmission case. The present invention relates to a seedling planting apparatus provided with an extruding mechanism for each planting arm for pushing out to a standby position after the pushing operation.

[0002]

2. Description of the Related Art An extruding mechanism is constituted by an extruding tool for extruding seedlings and an extruding cam for switching the position of the extruding tool as the rotary transmission case rotates. It is necessary to operate the push cam integrally with the rotary transmission case in order to make the pusher protrude only for the planting arm that switches from the seedling cutting posture to the seedling planting posture by rotating relative to the planting arm only in the planting posture. Conventionally, to obtain such a configuration,
As shown in Japanese Patent Application Laid-Open No. 1-265809, a cylinder shaft on which the last stage gear of the non-circular gear group constituting the mechanism for determining the attitude is externally extended to the outside of the rotary transmission case. Attach the planting case to the tip via a stopper pin, and position the camshaft with the push cam integrated at the tip inside the cylinder shaft, on the opposite side of the rotating transmission case from the side where the planting case exists. The push cam is integrated with the rotary transmission case by extending the extension end to the side face where it is located, and penetrating the extension end through the mounting hole of the plate member fixed to the side face in a non-rotatable manner.

[0003]

In the case of the above construction, the cylinder shaft and the camshaft have a double shaft structure, and the structure is complicated, and the camshaft is connected to the rotary transmission case. In order to integrate the rotation transmission case with the rotation transmission case so that they rotate in the same rotation phase, a high strength plate member different from the rotation transmission case is embedded in the side wall of the rotation transmission case, and the tip of the camshaft is fitted integrally with this plate member. This requires a configuration for mounting, resulting in an increase in the number of parts. SUMMARY OF THE INVENTION An object of the present invention is to provide a seedling planting apparatus which can simplify the structure, integrate a push cam with a rotary transmission case, and can easily set a planting depth and the like.

[0004]

The present invention is characterized in that the extruding mechanism comprises: an extruding device for extruding a seedling;
The pushing tool is formed by a pushing cam that switches the posture of the pushing tool as the rotary transmission case rotates, and the pushing cams are integrally connected by a connecting member located outside the planting arm. The planting arm for displacing the distal end of the planting arm, to which the seedling-planting claw is attached, with respect to the base end of the planting arm to the rotary transmission case so as to be laterally separated from the rotary transmission case. Further, the connecting base of the connecting member to the planting arm is bent and formed into an angle along the bent part of the planting arm, and the connecting member is bent at the angled part. A pocket space is formed on the lateral side of the base end of the planting arm, and the pocket space is set as a passage path of the planting claw. The effect is as follows.

[0005]

[Function] According to the characteristic structure, a plurality of pushing cams can be integrated by connecting the pushing cams with a connecting member, and the individual pushing cams are rotated in the same phase as the rotary transmission case while the relative positions of the planting arms are kept. Rotation is allowed, and the push-out operation of the pusher in the planting posture of the planting arm and the subsequent retraction operation are enabled. By setting the pocket space to the passage of the planting nail from the characteristic configuration,
If the mounting interval between the plurality of planting arms is constant, the seedling claw having a long size can be used without interfering with other planting arms.

[0006]

As a result, paying attention to the fact that there are a plurality of push cams, the push cams are individually integrated into the rotary transmission case simply by providing a connecting member located outside the rotary transmission case. It is possible to achieve the same function as the conventional one that integrates the pushing cam into the rotary transmission case without the need for connecting the rotary transmission case and the planting arm just because the connecting member is located outside the rotary transmission case. This has the effect of simplifying the mounting structure. In addition, there is an effect that the connection member can be used as an actuator by linking the connection member with a fertilizer application device or the like. Furthermore,
By attaching the seedling claw having a long dimension, the planting depth can be set substantially deep, and the adjustment range of the planting depth can be expanded. Moreover, at the angled bent portion of the connecting member forming the pocket space, the mud adhering to the seedling planting nail after planting, which passes through the pocket space, can be scraped off, and the connecting member can be scraped off. It can also exert a scraper function.

[0007]

As shown in FIG. 4, a planting case 2 is arranged below a seedling mounting table 1, and a planting transmission case 3 is extended rearward from the planting case 2 to form a planting transmission case 3. A seedling planting mechanism 4 is provided at the rear end, and a float 5 is arranged below the planting transmission case 3 to constitute a seedling planting apparatus A. Seedling planting mechanism 4
The rotation transmission case 6 is pivotally supported on the side surface of the planting transmission case 3, and the planting transmission claws 7 are respectively attached to the rotation transmission case 6.
Two planting arms 7, 7 equipped with A, 7A are mounted so as to be relatively rotatable.

As shown in FIG. 1, a rotating shaft 8 projects from the side surface of the planted transmission case 3 and the rotation transmission case 6 is attached to the rotating shaft 8 so as to be integrally rotatable. By transmitting power from the planting case 2 via the transmission mechanism 9 and driving the rotary shaft 8, the rotary transmission case 6 is configured to be rotationally driven around the axis X of the rotary shaft 8.

The mounting structure of the planting arm 7 will be described. As shown in FIG. 1, a horizontal rotation shaft 10 is rotatably supported at both ends in the longitudinal direction of the rotary transmission case 6 around its axis Y via bearings 11 and is integrally fixed to the horizontal rotation shaft 10. The planting arm 7 is attached via the end plate 12 so as to rotate integrally. An arm 13 is attached to an end of the lateral rotation shaft 10 in the rotation transmission case 6 so as to be integrally rotatable, and a cam follower 14 is rotatably supported at the tip of the arm 13. On the other hand, a half-split open end of the rotary transmission case 6 is brought close to the side surface of the planted transmission case 3, and an oil seal is arranged at a position close to both sides to form an oil bath space. An annular cam groove 16 for engaging and guiding the cam follower 14 is formed on a side surface of the planting transmission case. By the engagement guide action of the cam follower 14 and the annular cam groove 16, the planting arm 7 revolves as the rotation transmission case 6 rotates around the axis X of the rotation transmission case 6. By rotating at a non-uniform speed in the direction opposite to the rotation direction, as shown in FIG.
The seedling placement claw 7A is moved so as to draw an elliptical locus, and the cutting posture for cutting out the seedlings from the seedling mounting table 1 and the planting posture for planting on the field surface are determined. In other words, the cam follower 14 and the annular cam groove 16 are set in a cutting posture in which the planting arm 7 cuts out the seedlings from the seedling mounting table 1 as the rotation transmission case 6 rotates, and a planting posture in which the seedlings are planted on the field surface. This mechanism is referred to as a mechanism for determining the posture by rotating the planting arm 7 relative to the rotary transmission case 6 so as to make an elliptical circular motion. The annular cam groove 16 is not formed directly on the side surface of the planting transmission case 3;
An annular cam groove 16 is formed in a cam groove forming body 15 which can be detachably attached to the side surface of the planting transmission case 3, and when performing rough planting, a cam groove forming body having an annular cam groove 16 dedicated to coarse planting is formed. 15 can be replaced.

The seedling pushing mechanism 17 provided on the planting arm 7 will be described. As shown in FIG. 3, an extruding tool 18 slidably movable in and out of the planting arm 7 is supported, and an extruding portion 18 </ b> A is integrally formed at an outer end of the extruding tool 18. Tool 1
Cam mechanism C for operating the pushing tool 18 against the biasing force of the spring 19
Are provided to constitute the seedling pushing tool 17. That is, the cam follower body 20 that engages with the inner end of the pushing tool 18 to drive the pushing tool 18 and the pushing cam 21 that drives the cam follower body 20 form a drive cam mechanism C. The pushing tool 18 is driven by the drive cam mechanism C so as to project the seedling pushing posture when entering the field, and to maintain the pushing posture in the retreat posture in other rotation phases. As shown in FIG. 1, the structure of the pushing cam 21 will be described. The extruding cam 21 is connected to the cam body 21A and the cam body 21.
A and a support shaft 21B extending from both side surfaces of A. One of the support shafts 21A protrudes out of the planting case 7, and the support shaft 21A is pivoted to the side surface of the planting case 7 by the bearing 22. The other support shaft 21B is fitted into the wall surface of the planting case 7 so as to be relatively rotatable. With this configuration, the pushing cam 21 can be relatively rotated with respect to the planting case 7 and can be stably supported by the support at both ends.

On the other hand, the distal end of the planting arm 7 on which the planting claw 7A is mounted is laterally displaced from the rotation transmission case 6 with respect to the base end of the planting arm 7 attached to the horizontal rotating shaft 10. Let me do it. One end of the connecting member 25 is integrally attached to the protruding end of one of the support shafts 21B protruding from the planting case 7, and the other end of the connecting member 25 is positioned on the opposite side with respect to the rotation center of the rotary transmission case 6. And is integrally attached to a support shaft 21B protruding from the planting case 7 to be mounted. Therefore, the two supporting shafts 21B are integrated by the connecting member 25, and the pushing cam 21 performs the revolving motion in the same rotation phase in which the pushing cam 21 does not rotate relative to the rotary transmission case 6 as the rotary transmission case 6 rotates. The extruder 1 is configured to rotate relative to the arm 7 and is used only when planting
8 is configured to operate in a protruding manner, and the pusher 18 is maintained in the standby posture at another rotational phase.

As shown in FIG. 1, the base end of the connecting member 25 attached to the support shaft 21B is bent into an angle along the bent portion of the planting arm 7, and the connecting member 25 is bent. A pocket space a is formed on the lateral side of the base end of the planting arm at the angled portion, and the pocket space a is set as a passage path for the seedling planting nail. As shown in FIG. 4, a fertilizing device B is provided behind the seedling planting device A, and the fertilizing device B
Drive rod 27 having one end linked to a feeding mechanism 26
The other end is linked to a fixed radius position eccentric from the rotation center of the connecting member 25, and the feeding mechanism 26 is configured to be rotationally driven by the rotation of the connecting member 25 that rotates in accordance with the planting operation. .

Another Embodiment A mechanism for determining the posture of the planting arm 7 will be described. As shown in FIG. 5, the hermetic rotary transmission case 6 is mounted on the rotary shaft 8, and the horizontal rotary shafts 10 are mounted on the mounting portions of the planting arms 7, respectively.
Attach the planting arm 7 to 0. A first gear 28 linked to the planting transmission case 3 and loosely fitted to the rotation shaft 8 to belong to the fixed side;
Fourth gear 29 mounted so as to rotate integrally with zero
And a second gear 30 and a third gear 31 separately meshing with the first gear 28 and the fourth gear 29 and integrally rotating around the same axis, and house these gears 28, 29, 30, 31. A non-circular gear may be formed by sintering, and the planting arm 7 may rotate by a non-constant speed motion in the opposite direction to one rotation of the rotation transmission case 6. Three or more cam followers 14 and three or more annular cam grooves 16 may be provided.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing a state in which a planting arm is pivotally supported.

FIG. 2 is a side view showing an annular cam groove.

FIG. 3 is a longitudinal sectional side view showing an extruding tool.

FIG. 4 is an overall side view.

FIG. 5 is a cross-sectional plan view showing another embodiment of the mechanism for determining the posture of the planting arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seedling stand 6 Rotating transmission case 7 Planting arm 7A Seedling claw 17 Extrusion mechanism 18 Extrusion tool 21 Extrusion cam 25 Connecting member a Pocket space

Claims (1)

(57) [Claims] 1. A rotating transmission case (6) is provided with a plurality of planting arms (7) each having a seedling planting claw (7A), and the planting arm (7) is attached to the rotating transmission case (6). ) Relative to the pivot axis relative to the
With the rotation of the rotary transmission case (6), the planting arm (7) has an elliptical shape in a cutting posture in which the seedling is cut out from the seedling mounting table (1) and a planting posture in which the seedling is planted on a field surface. A mechanism is provided for rotating the planting arm (7) relative to the rotary transmission case (6) to determine the posture of the planting arm (7). The pushing mechanism (1) pushes out the seedlings held by the claws (7A) to the surface of the field, and retreats to the standby position after the pushing operation.
7) is a seedling planting device provided for each planting arm (7), wherein the pushing mechanism (17) is provided with a pushing tool (18) for pushing seedlings, and the posture of the pushing tool (18) is set as described above. A plurality of push cams (21) provided for each of the planting arms (7) are formed by an extruding cam (21) which is switched as the rotation transmission case (6) rotates. Outer connecting member (25)
And the tip of the planting arm (7) to which the seedling claw (7A) is attached is attached to the base end of the planting arm (7) attached to the rotary transmission case (6). The planting arm (7) is bent and formed so as to be deviated laterally away from the rotary transmission case (6), and furthermore, the connecting base end of the connecting member to the planting arm (7) is planted. The arm (7) is bent at an angle along a bent portion of the arm (7), and the connecting member (2) is formed.
A pocket space (a) is formed on the side of the base end of the planting arm at the angled portion of 5), and the pocket space (a) is set as a passage path of the planting claw (7A). Seedling plant.