JP3295525B2 - Rush transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grass transplanter having a planting claw cleaner that slides back and forth between planting claws.

[0002]

2. Description of the Related Art A crank is provided on a drive shaft, a cam is fixed to the crank arm, and the rotation of the cam drives a drive rod of a cleaner through a driven cam so as to be slidable back and forth. Transplanters are conventionally known.

[0003]

The driving cam of the cleaner in the grass transplanter described above is mounted so as to rotate integrally with the crank arm via a cam mounting member from the crank arm, and is planted in front of the cam. A cleaner case having a driving mechanism for the claw cleaner therein is arranged, and the cleaner case is fixedly supported at the upper center of the planting arm by a case fixing bracket and a plurality of support bolts. Therefore, the drive cam is formed long, the device is not configured compact, and the cleaner drive mechanism is separated from the center of rotation of the crank arm, resulting in poor balance. Accordingly, an object of the present invention is to provide a grass transplanter having a compact and balanced cleaner driving mechanism.

[0004]

SUMMARY OF THE INVENTION The present invention provides a grass transplanter as described below to achieve the above objects. That is, in a grass transplant in which a crank arm is provided on a drive shaft, a cam is fixed to the crank arm, and the drive rod of the cleaner is slidably driven back and forth through a driven cam by rotation of the cam. Weed transplantation characterized in that a mountain-shaped claw cleaner driving cam is provided at the end of the crank arm, and the driven cam is provided as an arm with a roller so as to protrude to one side from a claw cleaner case provided on one side of the planting claw. Machine. Further, in such a grass transplanter, the cleaner support stay is lengthened to make the entire cleaner driving mechanism closer to the crank arm.

[0005]

By providing a mountain-shaped drive cam at the end of the crank arm, a cam mounting member is not required.
The drive cam is short and formed compactly to ensure the operation, and by extending the cleaner support stay, the entire cleaner drive mechanism can be brought closer to the crank arm, so that the cleaner device can be formed in a well-balanced manner.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 6 shows the overall configuration of a blast transplanter, in which a transplanter C is detachably mounted on a rear part of a traveling device A via a work implement mounting device B, and C arranges a seedling mounting table (15) above the planting mission case M, and sets a chain case (1) rearward from the planting mission case M.
6), a planting arm (3) is arranged at the rear end of the chain case (16), and a planting claw (1) is provided at the tip of the planting arm (3). . When power is input to the planting mission case M from the PTO shaft projecting from the rear of the traveling device A via the transmission shaft (17), the planting mission case M reciprocates right and left on the seedling mounting table (15). And the planting arm (3) is rotated in synchronization with the reciprocating movement of the seedling mounting table (15), whereby the tip of the planting claw is rotated in an elliptical shape, and the rush of the seedling mounting table (15) is moved. Are cut in fixed amounts and planted on the field.

FIGS. 7 and 8 show a chain case (1).
6) and the drive case of the planting claw cleaner (4), that is, the claw cleaner case (12) and the supporting member are arranged at substantially left and right symmetric positions around the chain case (16) in the case of even-numbered planting. At the top end of the planting arm (3), a planting claw (1) is fixed with bolts (5) and (5). From the center to the tip of the planting claw (1), a forked fork is formed. It branches and the seedling table (1) is located between the claw portions (1a) (1a).
5) Hold the seedlings you want to cut out. A push rod (2) is provided at the tip of the planting arm (3) so as to extend and contract, and a guide plate (2) is provided at the tip of the push rod (2).
b) Push arm (2a) in front view through U shape
Is fixed, and when the push rod (2) slides forward under the planting claw (1), the claw portions (1a) (1) of the planting claw (1) are moved forward.
The seedlings to be sandwiched between a) are pushed out by the push arm (2a) and planted in the field.

The tip of the crank arm (11) is pivotally supported by a pivot shaft (20) in the middle of the planting arm (3), and the other end of the crank arm (11) is connected to the chain case (1).
6) It is fixed to a drive shaft (18) projecting more.
The rear part of the planting arm (3) is rotatably supported by the rear part of the side surface of the chain case (16) via a swinging crank arm (7), and the drive shaft (1) of the chain case (16) is rotated.
When 8) is rotated, the planting claw (1) at the upper end of the planting arm (3) rotates while drawing an elliptical trajectory up and down.

The planting claw cleaner (4) is formed of a plate-like member, and has a base portion bent in a V-shape and a base portion having a planting claw (1).
Push arm provided in the middle of the planting claw (1) when sliding back and forth between the claw portions (1a) and (1a) of the planting claw (1) so that there is sufficient space Do not interfere with the fixing bolt (8) of the anti-sliding material (6).
The tip is formed in a semicircular shape so that chamfering is not required and the shape is processed along the inside of the push arm (2a), so that foreign matter mixed in the push arm (2a) can be reliably removed. . The cleaner push rod (9) is fixed by nuts (10) (10) in a state where a sufficient space is secured at the tip thereof.

Next, the driving mechanism of the planting claw cleaner is as follows. That is, the crank arm (1) is connected to the crank arm (11) via the cam mounting member (11a).
A cam (14) is mounted so as to rotate integrally with 1), and a drive case (12) containing a drive mechanism for the planting claw cleaner (4) is disposed in front of the cam (14). (12) is fixedly supported at the center upper part of the planting arm (3) by a case fixing bracket (23) and a plurality of supporting bolts (25).

A rotary shaft (13) is provided in the drive case (12).
Is rotatably supported, one end of the rotating shaft (13) protrudes from the drive case (12), a first push lever (13a) is fixed, and the first push lever (13a) is fixed.
The pressing portion (13b) at the tip is disposed so as to be able to abut on the rotation path of the cam (14) while being rotatably supported by a bearing. A second push lever (19) is fixed to the other end of the rotation shaft (13), and the second push lever (19) is provided with a cleaner push rod, that is, a drive rod (9) via a connecting member (21). ) Is connected, and a return spring (22) is provided on the upper part of the drive rod (9).
The drive rod (9) is biased rearward. A cushion rubber (24) is mounted on the rear surface of the second push lever (19), and a return spring (22) reduces shock when the cleaner drive rod (9) returns and comes into contact with the drive case (12). . And cushion rubber (24)
The durability is improved by housing the rotation shaft (13), the second push lever (19), the return spring (22) and the like in the drive case (12). Drive rod (9)
The tip of the rod protrudes from the drive case (12), and the tip of the cleaner drive rod (9) is a nut (10) (10).
Thereby, the planting claw cleaner (4) is fixed.

Therefore, the rotation of the drive shaft (18) of the chain case (16) is converted by the crank arm (11) into an elliptical motion of the planting pawl (1), and the cam (14) is further rotated, thereby causing the first push lever to rotate. (13a) pressing section (13
b), the first push lever (13a) is pushed down, the rotating shaft (13) turns to push down the second push lever (19), and the driving rod (13) is connected via the connecting member (21). 9) is pushed out from the inside of the drive case (12), and the planting claw cleaner (4) fixed to the tip of the driving rod (9) moves forward between the claw portions (1a) and (1a) of the planting claw (1). It will slide. When the cam (14) is disengaged from the pressing portion (13b) of the first push lever (13a), the driving rod (9) is quickly returned to the rear by the urging force of the return spring (22), and the planting is performed. The claw cleaner (4) also slides backward.

The present invention is directed to a grass transplanter having a compact and balanced cleaner drive mechanism by improving a drive cam and a driven cam and a drive mechanism of a planting claw driven by the cam in the grass transplanter as described above. Machine. That is, in the configuration in which the cleaner mechanism is provided on the planting claw of the hay transplanter, a mountain-shaped claw cleaner driving cam is provided at the end of the crank arm, and the driven cam is provided on one side of the planting claw as an arm with a roller. It is provided to protrude to one side from the claw cleaner case.

In FIG. 1 and FIG. 2, the tip of the crank arm (28) is connected to the pivot shaft (2) in the middle of the planting arm (27).
9), and the other end of the crank arm (28) protrudes from the chain case (30).
It is fixed to. Also, the rear part of the planting arm (27) is rotatably supported via a driven arm (32) at the rear part of the side surface of the chain case (30), and when the drive shaft (31) of the chain case (30) is rotated. The planting claw (33) at the top of the planting arm (27) rotates while drawing an elliptical trajectory up and down.

A drive cam (34) having a mountain shape is formed at the other end of the crank arm (28). The structure is such that a plate (34a) having a mountain shape at the outer periphery is provided with a bolt (35) at the end of the crank arm (28). ), The inside of which is filled with a filler (36). This is to prevent the stem of the rush seedling from entering and winding up. The roller (37) of the arm with roller (38) for driving the cleaner is provided on the rotation locus of the cam (34).
4) Contact of the roller (37) causes the roller arm (38) to swing about the axis (39) of the claw cleaner case, and the first push lever (40) integral with the roller arm (38) is moved. It swings to move the connecting member (41) back and forth, whereby the drive rod (42) moves back and forth via the spring (43). Drive rod (42)
At the end is a long support stay (44), which is provided with cleaner pawls (45). The cleaner driving mechanism described above is housed in a claw cleaner case (46) provided above the planting arm (27), and the roller arm (38) is provided to protrude from the claw cleaner case (46) to one side. I have.

As described above, the mountain-shaped drive cam (34) is provided at the end of the crank arm (28), and the driven cam driven by the drive cam (34) is connected to the arm with roller (3).
8), and the support stay (44) of the claw cleaner is configured to be long, so that the entire cleaner drive mechanism is brought closer to the crank arm (28) side by the long support stay (44) and the short drive cam (34) to achieve balance. And a cleaner mechanism having a reliable drive unit with a reliable operation can be obtained. In addition, since the drive cam (34) is configured to be short in a mountain shape, the stem of the grass seedling does not wind up, and by filling the inside of the cam with the filler as in the embodiment, a cam having no gap can be obtained. There is no room for grass seedlings to enter.
Therefore, the lack of stock due to the winding of the stem is prevented, and the seal of the crank arm is not damaged.

In general, a large torque is generated when scraping grass seedlings, so that the planting arm is configured to be strong. Further, by attaching a claw cleaner, the planting portion increases in weight and the planting portion moves up and down during high-speed rotation. Move. In particular, it often occurs when the field is soft. In order to prevent this, a balancer is installed for each crank arm, but in the case of rush, the streaks are wrapped around when the balancer is present because the streaks are as narrow as 20 to 21 cm, and the rush seedlings are long, so a little Even if there is a catch, it will wind up. Therefore, a sufficient balancer cannot be attached.

FIGS. 3 and 4 show a crank arm (28) with a balancer (47) attached. However, such a configuration is insufficient in weight, so that a planting mission driven by a PTO shaft as shown in FIG. Each planting arm is driven via the chain case. When the balancer (50) is attached to the end of the transmission shaft (48) for driving the chain of the chain case via the balancer adapter (49), a sufficient weight can be obtained without damage to the seedlings. That is, a sufficient weight can be obtained by attaching the balancer to the end of the chain case base via the balancer adapter. In any case, the present invention is intended to provide a compact and balanced cleaner driving mechanism.

[0019]

According to the present invention, in a configuration in which a cleaner mechanism is provided on a planting claw, a drive cam for a mountain-shaped claw cleaner is provided at an end of a crank arm, and the driven cam is used as an arm with a roller to form one of the planting claws. Since the driving cam is formed on the side, the driving cam is formed short and compact, and the operation is reliably performed. Further, since the driven cam is a roller, a smooth driven operation can be obtained. However, since the cleaner support stay is long and the entire cleaner mechanism is configured to be closer to the crank arm at the center of rotation, a cleaner drive mechanism with a good balance can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing a device of the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a plan view showing a state where a balancer mechanism is attached to the crank arm.

FIG. 4 is a front view of the above.

FIG. 5 is a cross-sectional view of a state where the balancer is attached to a chain case base.

FIG. 6 is an overall side view of the rush transplanter.

FIG. 7 is a side view of a main part of the above.

FIG. 8 is a plan view of the above.

FIG. 9 is a diagram showing a relationship with the already planted grass seedling of the above.

[Explanation of symbols]

 27 Planting arm 31 Rotary axis 32 Follower arm 37 Roller 38 Roller arm 42 Drive rod 44 Support stay 45 Cleaner 46 Claw cleaner case

Claims (2)

(57) [Claims] 1. A grass having a crank arm provided on a drive shaft, a cam fixed to the crank arm, and a rotation of the cam to drive a drive rod of a cleaner via a driven cam so as to be slidable back and forth. In the transplantation, a mountain-shaped claw cleaner drive cam is provided at the end of the crank arm, and the driven cam is provided as a roller arm protruding to one side from a claw cleaner case provided on one side of the planting claw. Grass transplanter. 2. The turf transplanter according to claim 1, wherein the cleaner stay is extended so that the entire cleaner driving mechanism is closer to the crank arm.