JPH0815403B2 - Fixed position stop device for planted nails - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed position stopping device for a rotary planting nail.

[0002]

2. Description of the Related Art The following devices have been used as conventional row stoppers in rice transplanters. That is, as shown in FIG. 4, the power of the engine is transmitted to the bevel gear (3) of the intermediate shaft (2) with the planted clutch mechanism (1) and the intermediate shaft (2).
Driven by the intermediate shaft (2) to the sprocket (4)
The main shaft (7) is driven through (5) and the chain (6), and the sprockets (9) (1) of the drive case (8) with a plant
0) and chain (11) via planted arm shaft (12)
Is driven, and the sprocket (9) is driven from the main shaft (7) via the safety clutch (13). In addition, the trailing key (16) fixed to the feeding shaft (14) of the seedling mounting table engages with the reciprocating screw groove (17) of the cam shaft (15), and the cam shaft (15) rotates to move the seedling mounting table laterally. The cam shaft (15) is driven by a chain (not shown) from the intermediate shaft (2). The clutch mechanism (1) can stop the driving of the entire planting claw, and the pin (19) operated by the lever (18) as shown in FIG. 5 is connected to the cam (20) of the clutch mechanism (1). ), The clutch claw on the cam (20) side is pulled away from the clutch claw of the bevel gear (3) so that the clutch can be disengaged. Only one engagement with the highest part is possible. No, so the planting claw can be stopped in the upper position.

To stop the driving of the planting arm shaft (12) of each planting claw drive case (8), the lever (2) shown in FIG.
When 1) is rotated, the eccentric pin (24) of the rotation shaft (22) is engaged with the highest part of the cam (23), and the cam (2) is rotated.
The clutch pawl on the 3) side is separated from the clutch pawl of the sprocket (10), and the drive of the planting arm shaft (12) is stopped. In any case, whether it is the whole planting clutch or individual planting clutch, the upper stop device of the planting claw stops at one position with one rotation of the planting claw.
When the clutch is disengaged, the planting claw stops at a certain position, that is, just before the seedling intake.

[0004]

If the input shaft of the rotary case as shown in FIG. 2 is to be stopped instead of stopping the planting arm shaft (12) with the above-described upper stop device, the planting claw will be stopped. Since it only stops at one place with one rotation, even if you confirm the adjustment of the seedling scraping amount with one planting claw, when you confirm the adjustment of the seedling scraping amount with the other planting claw, Release the stop (enter the planting lever from the off),
It is troublesome to operate by turning the seedling intake. In order to improve this, Japanese Patent Application No. 59-256171 is constructed so that the front planting claws stop before the seedling intake and the rear planting claws stop before the ground. However, according to this, the push rod stops at the stop position while the seedlings are still discharged. In this case, the seedlings are still being planted, so the mud is lifted when the planting claws are raised. As a result, mud is still attached and stopped. Therefore, at the beginning of the next planting, the push rod must be retracted from the stop position in the section up to the seedling take-out port. It has an adverse effect. Further, although the push arm operates by driving the cam, according to the above, the action of stopping the movement of the pawl has no effect because the cam and the push arm disengage and stop the clutch without resistance.

[0005]

Therefore, the technical problem of the present invention is that the fixed stop of the planting pawl can accelerate the detachment of the mud when the planting claw is raised and can promptly operate the fixed stop. The purpose is to provide a device,
The technical means of the present invention for solving this technical problem is to drive two rotary planting pawls with a rotary case having a planetary gear mechanism, in which the rear planting pawl after completion of planting is located on the front side of the ground. It is configured to stop between the input shaft and the input shaft and to stop the push rod of the planting claw in the raised state after the planting and extruding, and there are two stopping points for one rotation of the planting claw. This is a constitution of a fixed position stop cam in the stop device.

[0006]

[Function] The rear planting claw after completion of planting is configured to stop between the front position on the ground and the input shaft, and the push rod of the planting claw to be stopped in the pulled-up state after planting and pushing out.
The fixed-position stop cam is configured in the upper stop position so that there are two stop points for one rotation of the planting claw.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. In FIG. 1, the planted arm shaft (12) is used as the input shaft of the rotary case (26), and the input shaft (25) is rotatable with respect to the planted transmission case (8). A sun gear (27) is loosely fitted to the input shaft (25). A hollow split rotary case (26) is mounted on the end of the input shaft (25) and is fixed to the input shaft (25) by bolts (29). Rotary case (2
6) meshes with the sun gear (27) and the sun gear (2)
7) the intermediate gears (30) (30) having the same number of teeth as the intermediate shaft (3
It is rotatably provided via 1). A planetary gear (33) having the same number of teeth as the sun gear (27), which is constantly meshed with the intermediate gear (30) on the intermediate shaft (31), is supported on the cam shaft (32) as a planting shaft, which will be described later. It is fitted via a member. These sun gear (27), intermediate gear (3
0) and the planetary gear (33) are gears that are appropriately eccentric from the center of rotation. The camshaft is also attached to the rotary case (26) via a position adjusting member (34).
A support member (35) is fitted on the cam shaft (32),
The planting claw case (38) and the planetary gear (33) are fixed to the support member (35). Then, the pushing claw (36) is adjusted by adjusting the position adjusting member (34).
The extrusion timing of is changed. Reference numeral (37) is a bolt for fixing the planting claw case (38) to the support member (35) and is inserted into the bolt hole of the planting claw case (38). The cam shaft (32) is provided with a cam (39), and from the push arm (40) contacting the cam, the intermediate shaft (4)
The push rod (42) shown in FIG. 2 is driven via 1), and there is a spring (43) at the intersection thereof,
In contrast to this is the cushion rubber (54). Therefore, the push arm (40) is biased by the spring (43), and the cushion rubber (54) is used for the planting claw case (3).
Buffered against 8). The push arm (40) is also pivotally supported on the shaft (63) with its end contacting the cam (39).

(44) shown in FIG. 2 is a planting nail, and (3)
6) is the push-out pawl described above, which includes the push arm (4
It is extruded by a push rod (42) driven by 0). After pushing, the push rod is pulled up while climbing from the ground. In the stop position, the push rod is in the retracted position as shown in FIG. Also, the cam (39) for the push arm (40) in the stop position.
The position is such that the push rod (42) is lifted and the brake is applied. Now, when the rotary case (26) as a rotating body rotates by the input shaft (25) which is its rotation shaft, the intermediate gear that meshes with the non-rotatable sun gear (27) with respect to the planted transmission case (8). (30) rotates along with the rotation of the rotary case (26) in the same direction by the same rotation angle as the rotation angle of the rotation.

A planetary gear (33) is attached to the intermediate gear (30).
Since the planting claw case supporting member (35) that is interlocked via the shaft rotates in the direction opposite to the rotation direction of the rotary case (26) by the rotation of the intermediate gear (30), the planting claw case (38) as a planting rod. Is to rotate about the drive shaft (25) in a state of facing the seedling mounting table, and when the side facing the seedling mounting table (18) descends from top to bottom during this rotating motion. After splitting only one seedling from the seedling mat on the seedling mounting table at the tip of the planting claw (44), it is planted in the field scene at the lower limit of its descending, and thereafter it is raised from the field scene. Since the extruding claws (36) extrude the seedlings during planting, the seedlings are separated from the planting claws (44). By the way, since the sun gear (24), the intermediate gear (30), and the planetary gear (33) are all eccentric gears, the closed loop of the movement locus of the claw tip is curved by one side and the other is closer to a straight line. The shape is an elliptical closed loop curve.

In order to mount a plurality of planting claws on the rotary case as described above, rotary cases (26) are provided on both sides of the planting transmission case (8) as shown in FIG. The planting claw case (38) corresponding to the first row A is connected in the manner described above, but the planting claw case (38) of the row B and the planting claw case (38) of the row A are connected pipes (45). (46), and the row B planting claw case (38) and the row C planting claw case (38) are coupled by connecting pipes (47) and (48). In addition, the C-row planting claw case (38) and the bearing case (51) are connected by connecting pipes (49) (50), and a support provided in the bearing case (51) portion corresponding to the sun gear (27). The shaft (53) is supported by bearings on a support frame (52) extending from the machine body. The cam shaft (32) penetrates and supports the inside of these connecting pipes. The cam (20) has a planting claw (44) in the front planting claw case (38) shown in FIG.
In order to stop the planting claw (44) in 8) at the front position on the ground, two stop points are provided for one rotation of the planting claw, and the push arm (4) at the stop position is provided.
0), the cam (39) and the push rod (42) are in the positions shown in FIG.

(20a) (2) in FIG.
0b), the pin (19) engages with the highest part (20a) (20b) of the cam in the clutch mechanism (1) at the stop position, so that the clutch pawl (20) on the cam side (20) side
c) is pulled away from the clutch pawl of the bevel gear (3) so that the clutch can be disengaged. Therefore, 2 per line
Since any one of the individual planting nails can be stopped before the seedling take-out port, after confirming the adjustment of the seedling scraping amount of one planting nail, the adjustment of the other planting nail can be confirmed. Then, as shown in FIG. 2, the rear planting claw after completion of the planting can be stopped between the front position on the ground and the input shaft, and the push rod (42) of the planting claw (36) can be planted. The present invention is characterized in that it is configured to be stopped in the pulled-up state after extrusion.

[0012]

According to this technical means, the rear planting claw after completion of planting stops between the front position on the ground and the input shaft, and the push rod of the planting claw after planting and pushing out. Since it is configured to stop in the raised state, the push rod is stopped in the raised state and the push rod is raised while climbing up from the mud to the stop position. It is possible to promote the detachment of mud attached to the rod. Immediately after releasing the stop clutch,
The operation resistance between the cam and the push arm helps to actuate the home position stop as soon as a braking force to stop is generated.

[Brief description of drawings]

FIG. 1 is an overall view of a planting claw drive device including the device of the present invention.

[Figure 2] Side view of the rotary planting claw

3 (a) and (b) are a front view and a cross-sectional view of the device part of the present invention.

FIG. 4 is an overall view of a conventional top stop device for planting nails.

[Fig. 5] Partial view of the same lever

FIG. 6 is a partial view of a unit clutch

[Explanation of symbols]

 1 Planted clutch mechanism 2 Intermediate shaft 3 Bevel gear 18 Lever 19 Pin 20 Cam 20a Highest part of cam 20b Highest part of cam 39 Cam 40 Push arm 42 Push rod

Claims (1)

[Claims] 1. A rotary case having a planetary gear mechanism for driving two rotary planting claws, wherein a rear planting claw after completion of planting stops between a front position on the ground and an input shaft. The push rod of the planting claw was configured to be stopped in the raised state after the planting claw was pushed out, and the fixed-position stop cam in the upper stop device was configured so that there were two stopping points for one rotation of the planting claw. Fixed position stop device for planted nails.