JPH0728809Y2 - Rotary rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rotary type rice transplanter configured to perform rotary planting by connecting a rotary case and a planting claw case to each other.

(Prior Art) The following devices have been used as a row stopper device in a conventional rice transplanter.

That is, as shown in FIG. 3, the power of the engine is transmitted to the bevel gear (3) of the rotary shaft (2) with the planted clutch mechanism (1) by lever operation to drive the rotary shaft (2). The intermediate shaft (7) is driven from the rotary shaft (2) through the sprockets (4) and (5) and the chain (6), and the sprockets (9) and (10) and the chain (11) of the planted pawl transmission case (8) are driven. ), The planting arm shaft (12) is driven, and the sprocket (9) is equipped with a safety clutch (13).
Driven from the intermediate shaft (7).

In addition, the trailing key (16) fixed to the feed 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. The cam shaft (15) is designed to be fed laterally, and is driven by a chain (not shown) from the rotary shaft (2).

The clutch mechanism (1) by operating the lever can stop the driving of the entire planting claw, and can stop the planting claw at the upper position.

In order to stop driving of the planting arm shaft (12) of each planting pawl transmission case (8), there is a safety clutch (18) which also serves as an upper stopping device at this portion.

In any case, whether it is the whole planting clutch or individual planting clutch, the upper stop device of the planting claw is designed to stop at one position with one rotation of the planting claw, and when the clutch is disengaged, the planting claw is planted. The attached nail stops at a certain position, that is, just before the seedling intake.

(Problems to be solved by the invention) In the above-mentioned things, the safety clutch (13) is 360
Since it is a safety clutch that engages at one place in one rotation of °,
It will run out of stock until the safety clutch is restored.

When the planting arm shaft (12) for driving the two planting claws is used as the input shaft of the rotary case, both of the two planting claws of the planting claw case driven by the rotary case become out of stock.

(Means for Solving Problems) Therefore, the technical problem of the present invention is to obtain a rotary type rice transplanter having a planting arm with a minimum stock deficiency, and solve the technical problem. The technical means of the present invention is to install a rotary case rotatably attached to each of the side-by-side planting claw transmission cases, and to connect a plurality of the planting claw cases to the rotary case. , It is configured so that multiple plants can be planted with each planting claw case during one rotation of the rotary case, and each safety clutch for transmitting to each rotary case is directly attached to the intermediate shaft from the power source. The input shafts in each of the planting pawl transmission cases that drive the rotary case are arranged in parallel on the line and are interlocked with the respective safety clutches. The rotary case has a configuration in which the rotary case is engaged at each rotation angle corresponding to a plurality of planted stocks per rotation.

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

In FIG. 1, the input shaft (19) is a planted pawl transmission case (8).
It is rotatable with respect to.

A sun gear (20) is loosely fitted to the input shaft (19). However, the sun gear (20) is fixed to the planting pawl transmission case (8) via the sun gear phase adjusting member (21).

The sun gear phase adjusting member (21) changes the relative position of the sun gear (20) with respect to the planted pawl transmission case (8).

A hollow split rotary case (22) is mounted on the end of the input shaft (19) and is fixed to the input shaft (19) by a bolt (23). An intermediate gear (24) meshing with the sun gear (20) and having the same number of teeth as the sun gear (20) is rotatably provided on the rotary case (22) via an intermediate gear shaft (25), A sun gear (20), which is constantly meshed with the intermediate gear (24) on the intermediate gear shaft (25), and a planetary gear (26) having the same number of teeth as that of the planetary gear (26) are fitted on the cam shaft (27) via a support member described later. It is worn. In the planetary gear mechanism composed of the sun gear (20), the intermediate gear (24) and the planetary gear (26), the respective gears are appropriately eccentric from the center of rotation.

The cam shaft (27) is attached to the rotary case (22) via a position adjusting member (29). A support member (28) is fitted on the cam shaft (27), and the planting claw case (30) and the planetary gear (26) are fixed to the support member (28). Then, by adjusting the position adjusting member (29), the pushing timing of the pushing claw (31) shown in FIG. 2 is changed.

Reference numeral (32) is a bolt for fixing the planting claw case (30) to the support member (28) and is inserted into the bolt hole of the planting claw case (30).

The cam shaft (27) is provided with a cam (33), and the push arm (34) shown in FIG. 1 that contacts the cam (33).
2 drives a push rod (38) shown in FIG. 2 via an operating rod (37), and a spring (35) is provided at the intersection of the push rod (38) and a cushion rubber (36) in contrast to this.

Therefore, the push arm (34) has a spring (35).
The cushioning rubber (36) is used for the engraved nail case (3
Buffered against 0).

The push arm (34) is also pivotally supported by the shaft (39), and its end portion contacts the cam (33).

In FIG. 2, (40) is a planting claw, (31) is the above-mentioned push-out claw, which is a push rod (38) driven by a push arm (34) through an operating rod (37). Extruded.

Now, when the rotary case (22) as a rotating body is rotated by the input shaft (19) which is its rotating shaft, the intermediate case meshing with the non-rotatable sun gear (20) with respect to the planting pawl transmission case (8). As the rotary case (22) rotates, the gear (24) rotates in the same direction by the same rotation angle as the rotation angle of the rotation.

The support member (28) of the planted pawl case (30) that is interlocked with the intermediate gear (24) via the planetary gear (26) rotates in the direction opposite to the rotation direction of the rotary case (22) by the rotation of the intermediate gear. Therefore, the planting claw case (30) turns around the input shaft (19) with the posture facing the seedling placing table, and the side facing the seedling placing table is turned up during this turning movement. When descending from the bottom of the planting claw (40), one seedling is split from the seedling mat on the seedling mounting table at the tip of the planting claw (40). It rises above the surface, and the extruding claw (31) extrudes the seedling at the time of planting, so that the seedling separates from the planting claw (40).

Since the sun gear (20), the intermediate gear (24), and the planetary gear (26) are all eccentric gears, the closed loop of the locus of movement of the claw tip of the planting claw (40) is curved by one side and the other. Is a closed elliptical closed-loop curve that is closer to a straight line.

In the illustrated multiple planting pawl arm, rotary cases (22) are arranged on both sides of the planting pawl transmission case (8), and the planting pawl transmission cases (8) are connected by a connecting pipe (42). There is.

The safety clutch (13) has a cam (41) composed of a mountain (41a) and a valley (41b), as shown in FIG.
Since the peaks and valleys are formed within the range of 90 °, when the clutch is disengaged and rotated 180 °, the peaks and the valleys are engaged again.

Therefore, when the safety clutch (13a) in one of the planted pawl transmission cases (8a) is activated, this clutch rotates 180 ° to engage again, so that the clutch rotates at a rotation angle according to the number of planted plants. The other planted transmission case (8
It will engage at a position synchronized with b).

Therefore, it is difficult to minimize stockouts.

In the embodiment, the case in which the number of the planting claws of the planting claw case driven by the rotary case is two has been described. However, even when the number of the planting claws is two or more, the safety clutch is engaged according to the number of planted plants. The cam may be configured.

(Effect of the Invention) According to the present invention, when the safety clutch corresponding to the planted pawl transmission case is activated, the safety clutch is rotated again after rotating the rotary angle according to the number of planted stocks in one rotation of the rotary case. Since they mesh with each other, the planting claw transmission cases that rotate at a rotation angle that corresponds to the number of planted plants mesh with each other in a synchronized state, and the number of plants that can be planted in one rotation of the rotary case is minimal. Complete.

Since this safety device is arranged in a straight line on the intermediate shaft, torque can be transmitted to the input shaft with a uniform force, and since the structure is neat, maintenance is easy.

[Brief description of drawings]

1 (a) and (b) are an overall view of the multiple planting arm and a partial view of a safety clutch cam of the present invention. FIG. 2 is a side view of a rotary case. FIG. 3 is a conventional upper stop device for planting claws. Overall view (8) …… Transplant case with plant (13) …… Safety clutch (18) …… Safe clutch (19) …… Input shaft (22) …… Rotary case (30) …… Claw case with plant (40) ) …… Planted nail

Claims (1)

[Scope of utility model registration request] 1. A rotary case rotatably attached to each of the side-by-side planting claw transmission cases, and a plurality of the planting claw cases are interlockingly connected to the rotary case to form a rotary case. It is configured so that multiple plants can be planted in each planting claw case during one rotation of the case, and each safety clutch for transmitting to each rotary case is aligned on the intermediate shaft from the power source. The input shafts in the planted pawl transmission cases that are installed in parallel and drive the rotary cases are interlockingly connected to the respective safety clutches, and these safety clutches are used in a plurality of rotations in one rotation of the rotary case. A rotary rice transplanter characterized by being engaged at each rotation angle corresponding to the number of stocks attached.