JPH078043A - Planting mechanism of rice transplanter - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] To reduce the risk of interference with seedlings immediately after planting. In a planting mechanism of a rice transplanter in which a pocket space a is formed on the lateral outer side of a case support shaft 11, a pair of planting claw support cases 10 are provided at both ends of a rotating case 8 around a horizontal axis. Is rotatably supported via the case support shafts 11 and 11, and the case support shaft 11 is integrally rotatably connected to the planting claw support case 10 so that the rotating case 8 and the case support shaft 11 are relatively opposed to each other. The rotary mechanism K is configured to rotate relative to each other, and the lateral support shaft 21 of the rotary cam 19 for seedling pushing operation is supported rotatably relative to each of the planting claw support cases 10. A crank portion 23a bent along the rotation direction of the rotating case 8 so as to bypass the extended space between the extended ends.
Are connected and fixed via a connecting tool 23 formed with.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects and fixes an intermediate position of a rotating case to a drive shaft projecting laterally outward from a transmission case, and attaches seedling taking-out claws to both ends of the rotating case. The pair of planted claw support cases are supported so as to be rotatable relative to each other about a horizontal axis via a case support shaft, and the planted claw support case and the rotation are driven by the rotational drive of the rotary case. The case is provided with a relative rotation mechanism that relatively rotates the planting claw so that the planting claw draws a predetermined seedling removal trajectory, and the planting claw support cases equipped with the planting claw support cases are planted. A rotation cam that is operated to move in and out based on the relative rotation of the claw support case and the rotation case is provided, and a mounting portion of the planting claw in the planting claw support case is provided from a case body portion to which the case support shaft is connected. Also on the outside in the radial direction of the case support shaft One to Yokogai hand side is offset, the pocket space is formed in the lateral outer side of the casing shaft relates planting mechanism of rice planting machine is provided with the rotating cam to the case body.

[0002]

2. Description of the Related Art In the planting mechanism of a rice transplanter described above, conventionally, as disclosed in, for example, Japanese Patent Laid-Open No. 5-30827, the support shaft of the rotary cam is arranged substantially on the same axis as the case support shaft. And a pair of cam support shafts provided on both sides of the rotating case in a state of being circumscribed, and provided so as to bypass the outer ends of the mounting portions of the planting claws in the planting claw support case. There has been a structure in which a member is integrally connected, and the connecting member is bent and formed in an angle shape along the offset bending forming portion of the planting claw support case.

[0003]

The conventional structure described above has a simple structure in which the cam shaft and the rotating case are integrated, and even when a long planting claw is used, the long planting is accompanied by the rotation operation. The tip of the pawl is prevented from interfering with the connecting member or the case body, so that a smooth planting operation can be performed. However, considering the behavior of the planting mechanism during the operation of planting seedlings according to the above conventional structure, when the rotating case rotates around the horizontal axis while planting the seedlings while the aircraft is running, the planting immediately after planting the seedlings is performed. The angled part of the connecting member exists on the rear side of the claw, and this angled part extended radially outward from the case support shaft (downside immediately after planting seedlings) contacts the seedlings. Then, the seedlings could be pushed down as the aircraft progressed, and there was room for improvement. The present invention aims to eliminate the above-mentioned problems.

[0004]

A feature of the present invention is that in the planting mechanism of a rice transplanter described at the beginning, the case support shaft is integrally rotatably connected to the planting claw support case, and a rotating case is provided. And the case support shaft are configured to rotate relative to each other by the relative rotation mechanism, and the lateral support shafts of the rotary cams are supported by the planting claw support cases so as to be rotatable relative to each other. The extending ends of both lateral support shafts are connected and fixed to each other through a connecting tool, and a crank portion that bends along the rotation direction of the rotating case is formed in the connecting tool so as to bypass the pocket space. It is in.

[0005]

The camshafts mounted inside the pair of planting claw support cases, which are rotatably attached to each other on both sides of the rotary case, are connected and fixed to each other through the connecting tool, so that both camshafts are rotated. In a state of being integrated with the planting claw support case, the cam guide action for the withdrawal operation of the seedling pushing tool can be effectively exerted by the relative rotation with the planting claw support case. By forming a crank portion that bends along the rotation direction of, it is configured to bypass the pocket space where the seedlings immediately after planting will pass,
Immediately after planting, that is, even when the crank portion is located at the lowermost side, there is less risk of contacting the planted seedlings.

[0006]

Therefore, the rotating cam for the operation of moving the seedling pushing device out can be integrated with the rotating case by the rational structure improvement, and the supporting structure of the rotating case and the planting claw support case can be obtained. Although it can be simplified, the connecting member of the cam support shaft can suppress the harmful effects such as the seedling being pushed down due to the interference with the seedling immediately after planting.

[0007]

Embodiments will be described below with reference to the drawings. Figure 3
The rice planting equipment of the rice transplanter is shown in. The seedling planting device comprises a seedling stand 2 that reciprocally moves laterally with respect to a planting transmission case 1 that also serves as a frame, a planting mechanism 3 that takes out a seedling for planting from the lower end of the seedling stand 2 and plants it in a field, It is provided with a leveling float 4 for leveling a field scene, and is equipped with a fertilizer application device 5 for performing lateral row fertilization at the same time as the planting operation.

As shown in FIG. 1, the planting mechanism 3 is rotationally driven via a chain transmission mechanism 6 in the planting transmission case 1, and a drive shaft 7 protruding laterally outward from the case is attached to a drive shaft 7. A pair of planting claw support cases 10, 10 in which the intermediate positions are connected and fixed and the planting claws 9, 9 for taking out seedlings are attached to both ends of the rotating case 8 are relatively rotated around the horizontal axis. While freely supporting via the case support shafts 11 and 11, the planting claw 9 draws a predetermined locus for taking out seedlings between the planting claw support case 10 and the rotary case 8 as the rotary case 8 is driven to rotate. As described above, the relative rotation mechanism K for performing relative rotation is incorporated in the rotation case 8. More specifically, the case support shaft 11 is rotatably supported by the rotating case 8, and the planting claw support case 10 is integrally connected to the case support shaft 11 via the end plate 12.
A gear 13 fixed to the drive shaft 7 and a sun gear 14 fitted to the drive shaft 7 outside the free end and fixed to the planted transmission case 1 are supported by a fulcrum pin 15 in the middle of the rotating case 2.
It is occlusally linked via the intermediate gears 16 and 17,
Each of these gears is configured as a non-circular gear defined by a predetermined characteristic to configure the relative rotation mechanism K. In other words, with this mechanism K, with the rotation operation of the rotating case 8, the tip locus of the planting claw 9 draws an elliptical locus in side view, and the seedlings are taken out one by one from the lower end of the seedling stand 2 and placed in the field. It is structured so that it can be planted.

Further, in each of the planting claw support cases 10, the mounting portion 10a of the planting claw 9 is radially outward of the case support shaft 11 more than the case body 10b to which the case support shaft 11 is connected. Side and offset laterally outward, a pocket space a is formed on the lateral outer side of the case support shaft 11.

Each of the planting claw support cases 10 is provided with a seedling pushing tool 18 for pushing the retained seedlings into the field in accordance with the planting operation. The seedling pushing tool 18 is composed of the planting claw support case 10 and the rotating case 8. The rotary cam 19 which operates based on the relative rotation is configured to be moved in and out. That is,
As shown in FIG. 2, the seedling pushing tool 18 has a planting claw mounting portion 1
0a, which is urged by a spring 20 to push it out, and in the case body 10b, the case support shaft 11
The rotary cam 19 is rotatably supported by a lateral support shaft 21 in a state of being located on the same axis as the above, and a cam follower 22 acting on the rotary cam 19 resists the urging force of the spring 20 to push out the seedling pushing device 18. The cam characteristic is set so that the rotation of the rotary cam 19 causes the planting claws 9 to move out and back so as to push out only when the seedlings are planted.

Then, the extended ends of the lateral support shafts 21 and 21 are connected and fixed to each other via a connecting tool 23, and the lateral support shafts 21 and 21 revolve integrally with the rotating case 8 for planting. The attachment claw support case 10 and the rotation cam 19 are configured to rotate relative to each other, and the connecting tool 23 has a rotation direction of the rotation case 8 to bypass the pocket space a as shown in FIGS. 1 and 3. By forming a crank portion 23a that is bent along with, the connecting tool 23 is less likely to come into contact with the planted seedling immediately after planting with the planting claw 9. A push-pull rod 25 for actuating the fertilizer feeding mechanism 24 of the fertilizer applicator 5 is pivotally connected to the middle of the connecting tool 23 at a location slightly eccentric from the rotary axis X via a ball joint 26. The fertilizer is delivered by utilizing the rotating force of the rotating case 8.

[Other Embodiment] The mechanism K for rotating the planting claw support case 10 relative to the rotation case 8 is as follows.
The gear type mechanism as described above may be replaced with the following structure. As shown in FIG. 4, an arm 28 having a cam follower 27 at its free end is attached to the case support shaft 11 integrally connected to the planting claw support case 10, and the rotary case 8 is formed in a half-split shape. An annular cam groove 29 into which the cam follower 27 is engaged is formed on the side surface of the auxiliary transmission case 1 so that the planting pawl support case 10 draws a predetermined relative rotation regulation by a cam action as the rotating case 8 rotates. To configure.

It should be noted that reference numerals are added to the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Cross-section of the planting mechanism

[Figure 2] Side view of the seedling pushing device

[Figure 3] Side view of the planting device

FIG. 4 is a side view showing a relative rotation mechanism of another embodiment.

[Explanation of symbols]

 1 Transmission Case 7 Drive Shaft 8 Rotating Case 9 Planting Claw 10 Planting Claw Support Case 10a Planting Claw Mounting Part 10b Case Main Body 11 Case Spindle 18 Seedling Pushing Tool 19 Rotating Cam 21 Lateral Spindle 23 Coupling 23a Crank Section a Pocket space K Relative rotation mechanism

Claims (1)

[Claims] 1. An intermediate position of a rotating case (8) is connected and fixed to a drive shaft (7) projecting laterally outward from the transmission case (1), and seedlings are taken out at both ends of the rotating case (8). A pair of planting claw support cases (1) equipped with planting claws (9)
0) and (10) are supported so as to be relatively rotatable about the horizontal axis via the case support shafts (11) and (11), and the plant is accompanied by the rotational drive of the rotating case (8). A relative rotation mechanism (K) for relatively rotating the attached claw support case (10) and the rotating case (8) so that the planting claw (9) draws a predetermined seedling take-out trajectory. ), And the seedling pushing-out tool (18) provided in each of the planting claw support cases (10) moves in and out based on the relative rotation of the planting claw support case (10) and the rotating case (8). A rotation cam (19) for operating the planting claw support case (10), and the planting claw mounting part (10a) in the planting claw support case (10) is more By offsetting the case support shaft (11) radially outward and laterally outward,
A planting mechanism for a rice transplanter in which a pocket space (a) is formed on the lateral outer side of the case support shaft (11), and the rotary cam (19) is provided in the case body portion (10b). Attach the case support shaft (11) to the planting claw support case (1
0) is integrally rotatably connected, and the rotating case (8) and the case support shaft (11) are relatively rotated by the relative rotating mechanism (K). , (19) of the lateral support shafts (21), (21) are attached to each of the planted claw support cases (1
0) and (10) are supported so as to be rotatable relative to each other, and the extending ends of the both lateral support shafts (21) and (21) are connected and fixed via a connecting tool (23). 23) A planting mechanism of a rice transplanter in which a crank portion (23a) bent along the rotation direction of the rotating case (8) is formed in a portion 23) to bypass the pocket space (a).