JP3254531B2 - Transplant machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to concerns from the seedling tray of seedlings the platform the seedlings taken out by the seedling taking out the nails, to planting Ru walking type transplanter in the field is inherited to the nail with a seedling planting.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No. 1-120209 discloses
As shown, when the front and rear wheels are
The lifting cylinder which raises and lowers the front wheel, and raises and lowers the rear wheel
There is a technique for providing a lifting cylinder .

[0003]

The above prior art is based on a front wheel.
The front wheel lifting cylinder is equipped with a lifting lever and a lifting valve for
Control lever to raise and lower the front wheel,
And a lift valve to control the rear wheel lift cylinder
Since the wheel is raised and lowered, for example, the height of the ridge for planting vegetable seedlings
By raising and lowering the front and rear wheels in the same direction.
Therefore, there is a problem that the longitudinal inclination of the body is easily changed .

[0004]

According to the present invention, a front wheel is provided.
And a lifting unit for mounting the rear wheels and raising and lowering the front wheels
And a transplanter equipped with a lifting member for raising and lowering the rear wheel
Control the front and rear wheels for the front and rear wheels
An operating tool that raises or lowers in the same direction almost simultaneously,
Provide an operating device that raises the front wheel when the wheel is lowered
Ridge height by raising and lowering the front and rear wheels almost simultaneously in the same direction.
You can adjust the height of the aircraft to ground according to the
Can be moved up and down with little change, and the rear wheel
To raise the aircraft and raise the front wheels
The direction changing operation at the headland can be easily performed .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 is an explanatory view of the elevating unit, FIG. 2 is an overall side view of the transplanter, FIG. 3 is an overall plan view thereof, (1) is a front frame on which an engine (2) is mounted, and (3) is the aforementioned. A transmission case connected to the rear end of the frame (1); (4) rear wheels, which are left and right traveling drive wheels, supported on the transmission case (3) via a left and right transmission case (5) so as to be vertically swingable;
(6) left and right front wheels which are supported on the front end side of the front frame (1) via an axle frame (7) so as to be vertically swingable;
(8) is a seedling supply device installed behind the transmission case (3) via a chassis frame (9), and (10) is a transmission for planting the transmission case (3) between the left and right rear wheels (4). A seedling planting device installed through the case (11);
(12) is a crushing roller for crushing the ridge surface (A), (13)
Is a gauge wheel that supports the seedling planting device (10) so as to be able to swing up and down, and one strain from a seedling tray (15) on a seedling mounting table (14) that reciprocates right and left in the seedling supply device (8). The potted seedlings are removed with the seedling removal nails (16), and the removed potted seedlings are placed in the seedling planting apparatus (10).
To the hopper type planting claw (18) that moves up and down in conjunction with the multi-cutter (17) of the steering cutter (19).
The plant is configured so that the pot seedlings are planted, that is, transplanted at regular intervals on the ridge surface (A) of the airframe during the operation of the body.

Incidentally, (20) is a lifting / lowering lever, (21) is a planting clutch lever, (22) is a main speed change lever, and (2)
3) is an inter-stock shift lever, (24) is a planting depth adjusting lever, (25) is a left and right side clutch lever, and (26) is a traveling clutch lever.

As shown in FIG. 4, an output shaft (2a) of the engine (2) is connected to an input shaft (27) of a hydraulic pump (27).
a) and the input shaft (3a) of the mission case (3)
The transmission case (3) is provided with a travel output shaft (30) for driving a rear wheel (4), and the transmission case (3) is connected to the transmission case (3) via transmission belts (28) and (29). ) Is provided with a planting output shaft (32) for outputting to a planting claw drive system (31) for transmitting the output from the engine (2) to the input shaft (3a) of the transmission case (3). The left and right rear wheels (4) and the planting claws (18) are configured to be driven respectively.

Further, the speed change of the seedling picking claw drive shaft (34) for driving the rotary case (33) of the seedling picking claw (16) and the lateral feed shaft (35) of the seedling mounting base (14) is performed. Lateral feed switching gear case (36) and the seedling mounting table (1
4) A vertical feed clutch shaft (38) for driving the feed chain sprocket (37) for vertical feed of the seedling tray at the end of the horizontal feed at the left and right, and a vertical feed cam (39) for intermittently rotating the clutch shaft (38). ), A seedling removal drive system (41) having a drive camshaft (40) and the like, and a planting clutch case (42) disposed above the transmission case (3).
The seedling removal drive system (41), such as the seedling removal claw (16) and the seedling mounting table (14), is operatively connected to the input shaft (3a) of the transmission case (3). , Respectively.

As shown in FIG. 6, the planting clutch case (42) includes a planting clutch shaft (43) for outputting to a seedling removal drive system (41), and a planting claw drive in the transmission case (3). The clutch shaft (43) is also interlockedly connected to the single-rotation clutch via a planting timing rod (44), and is connected to the input shaft (3) of the transmission case (3).
a) shows a continuously variable transmission belt (45) and a transmission pulley shaft (4).
6) and the clutch case (4) via the transmission chain (47).
The input shaft (42a) of (2) is interlocked, and the first and second reduction gears (48) (4) are connected to the input shaft (42a).
9) and the planting clutch shaft (4) via the counter shaft (50).
3), the planting clutch (51), which is also a safety clutch, and a planting claw timing cam (52) are provided on the planting clutch shaft (43), and the planting clutch (51) is provided.
The clutch cam (53) for operating the clutch cam (53) is interlocked with the planting clutch lever (21), and the leading end roller portion (55) of the driven cam (55) pivotally supported on the timing cam shaft (54) of the clutch case (42). 55a) is brought into sliding contact with the peripheral surface of the timing cam (52), and the transmission case (3) is moved by the cam (52) via a rod (44).
By turning on and off the one-turn clutch, the seedling removal claw (16) and the planting claw (18) can be planted at an appropriate timing.

Further, as shown in FIG. 5, hydraulic lifting cylinders (56) and (5) are wheel lifting members for raising and lowering the body by raising and lowering the rear wheel (4) and the front wheel (6).
7) a hydraulic rolling cylinder (58) for rear wheel horizontal control for correcting the inclination angle of the fuselage in the left-right direction, and a traveling output shaft (3) for the transmission case (3).
Left and right fixed pivot plates (60a, 60b) are provided on the base bosses (59a, 59b) of the left and right swing cases (5), (5), which support the left and right sides of the right and left swing plates (0). 6
0a) and (60b), the lower and upper swing arms (63a) and (63b) of both ends of the rolling fulcrum shaft (62) are connected via a connecting link (61b) with a turnbuckle (61a). 62) A swing shaft (64) through which the middle is rotatably inserted is connected to the tip of a piston rod (56a) of the lifting cylinder (56), and rolling is performed on the fulcrum shaft (62) via a rolling arm (65). The piston rod (58) of the cylinder (58)
a) and the rolling cylinder (5) is connected to the swing shaft (64) via a bracket (66).
8) Attach, guide frame (67) is fixedly mounted on the upper side of the transmission case (3), and the elevating cylinder (56) is mounted on the guide frame (67). A swing shaft (64) is provided to guide reciprocal sliding. When the piston rod (56a) of the elevating cylinder (56) moves forward and backward, the swing shaft (64) is slid so that the left and right swing cases (5) (5) ) Is integrally moved up and down in the same direction to control the lifting and lowering of the body by the rear wheel (4), while moving the piston rod (58a) of the rolling cylinder (58) forward and backward, the fulcrum shaft (62) By rotating, the left and right swing cases (5) and (5) are moved up and down in the opposite directions to perform horizontal control for correcting the left and right inclination angles of the body by the rear wheels (4).

Further, a front frame (70) having a front bumper (69) is fixed to the front surface of the base frame (1) by bolts, and a fixed shaft (71) is provided on the front frame (70). Left and right lifting fulcrum shafts (72) (7)
2) is rotatably mounted, and the left and right front wheels (6) (6) (7) are connected to the other ends of the left and right swing arms (7) (7) via the front axles (73) (73). 6) and the left and right lifting fulcrum shafts (72) (72)
The piston rods (57a) (57) of the lift cylinders (57) (57)
a) and the left and right brackets (75) (75) fixed on both sides of the base frame (1).
7) By supporting (57), these cylinders (57)
By moving the piston rods (57a) and (57a) of (57) back and forth, the right and left front wheels (6) and (6) can control the vertical movement of the body and the left and right inclination angles.

As shown in FIG. 8, lifting cylinders (56), (57) and (57) for controlling the lifting and lowering of the machine body are operated by solenoids (76a) (77a) and hydraulically operated switching valves (76) (7).
7) and a circuit connected to a hydraulic pump (27) via a flow divider (78), and the respective cylinders (56), ((a) and (b) are excited by the excitation of the solenoids (76a) (77a) by the operation of the elevating lever (20). 57) It is configured to perform the lifting / lowering control of the machine body according to (57).

By the way, as shown in FIG. 7, the lifting lever (20) and the planting clutch lever (21) are provided so as to be interlockable, and the engaging member (79) of the planting clutch lever (21) is attached to the lifting lever. When the (20) is engaged, the interlocking state is established, and when the body is lowered (the front and rear wheels (6) and (4) are raised) by the elevating lever (20), the planting clutch lever (21) is simultaneously turned on. The operation state is such that the planting clutch (51) is turned on.

As shown in FIG. 9, there is provided a lifting control circuit (80) as a turning control means for exciting the lifting solenoids (76a) (77a), and raising and lowering the body of the lifting lever (20). Up / down detection switches (81a) and (81b) for detecting operation, planting on / off detecting switches (82a) (82b) for detecting "on" and "off" of the planting clutch lever (21), and turning switches (8
3) is input to the control circuit (80), and the switches (81a) (81b) (82a) based on the operation of the lifting lever (20) and the planting clutch lever (21).
It is configured to control the lifting and lowering of the body by turning on and off (82b).

This embodiment is configured as described above, and its operation will be described below with reference to the flowchart of FIG. Planting clutch lever (21) for planting work
When the lifting lever (20) is engaged with the engaging member (79) and the body is lowered by the lever (20) in an interlocked state, the lowering switch (81b) is turned on and the control valve (76) ( At the same time, the lowering of the body (the front and rear wheels (6) and (4) are raised) is controlled by the solenoids (76a) and (77a) of 76), and at the same time, the planting clutch (51) is also engaged to perform the planting work of the seedlings. Will be

In such an interlocked state between the hydraulic pressure raising and lowering and the planting clutch (51), the planting clutch lever (2)
When only 1) is turned off and the cut-off switch (82b) detects this, the solenoid (77a) of the left-right switching valve (77) on the front wheel controls the lowering of only the front wheel (6), and the aircraft is moved forward. The rear side is inclined downward with the rear side raised. As a result, the steering handle (19) has an extremely low height above the ground and the body weight also moves toward the rear wheel (4), so that the handle (19) is depressed to lift the front wheel (6) from the ground. In such a left-right turn, a safe and easy turn can be performed without requiring a large pushing-down force for the handle operation force.

The turning operation of the planting clutch (51) by the planting clutch lever (21) after turning is performed by the switch (8).
2a), the lifting control of only the front wheel (6) is performed, and the aircraft body returns to the original horizontal lowering posture, while at the end of work or the like, the lifting / lowering lever interlocked with the clutch lever (21). When the switch (81a) detects the body lifting operation of (20), the lowering control of the front and rear wheels (6) and (4) is performed, and at the same time, the planting clutch (51) is disengaged and the body is raised. To stop planting.

When the turning switch (83) is turned on during traveling on a road with the body raised and held, the solenoid (76) of the rear wheel switching valve (76) is turned on.
The raising control of only the rear wheel (4) according to a) is performed, so that the front side of the body is raised and the rear side is in the inclined position of lowering, so that it is possible to easily turn while traveling on the road as in the above-described operation. Things.

FIG. 11 shows a front and rear wheel lifting cylinder (57).
A single lever type hydraulic switching valve (8
4) and a rod-type directional control valve (85) for raising and lowering the rear wheel (7) in reverse between the switching valve (84) and the cylinder (57) on the front wheel (6) side. by, in the interlocking state of the temperature <br/> descending lever (20) and clutch lever (21), only when the switching of the planting clutch (51) by planting work in the clutch lever (21), The control valve (85) is switched by the link connection mechanism (86) between the rod (85a) of the direction control valve (85) and the clutch lever (21), and the front wheel (6) is raised and the rear wheel is moved.
(4) perform control in posture of lowered, which is constituted so as to facilitate turning of the aircraft.

As is clear from the above, the front wheels (6) and
Attach the rear wheel (4) and raise and lower the front wheel (6).
A front wheel lifting cylinder (57) as a lifting member;
(4) Rear wheel lifting cylinder which is a lifting member for lifting
In the transplanting machine provided with (56), the front wheel (6) and the rear wheel
According to the control of each lifting cylinder (57) (56) for (4)
The front and rear wheels (6) and (4) are raised almost simultaneously in the same direction.
Is a switching valve (84) which is an operating device for lowering and lowering,
A turn that raises the front wheel (6) when the wheel (4) is lowered
A control valve (85), which is a reusable operating tool, is provided. And before
The rear wheels (6) and (4) are raised and lowered in the same direction at substantially the same
Adjust the aircraft's ground height according to the height, etc., and tilt the aircraft
Up and down with almost no change and run on four wheels
If you adjust the planting depth while maintaining the seedling planting work posture properly
Both headlands that raise the fuselage by lowering the rear wheel (4)
When switching to the turning position, raise the front wheel (6)
Switch to the turning posture on the headland on the field where the motorcycle runs
Move operation to the process.

[0021]

As is apparent from the above embodiments, the present invention provides the front wheel (6) and the rear wheel (4) while providing the front wheel (6) and the rear wheel (4).
A lifting member (57) for raising and lowering the wheel (6), and a rear wheel (4)
Transplanter provided with a lifting member (56) for raising and lowering
And lifting members (57) for the front wheel (6) and the rear wheel (4).
(56) By control, the front and rear wheels (6) and (4) are almost
Operating device (84) for raising or lowering in one direction, and rear wheel
Operation to raise the front wheel (6) when lowering (4)
(85), and the front and rear wheels (6) and (4) are substantially the same.
At times, move the aircraft up and down in the same direction, and
The height can be adjusted and the inclination of the aircraft
It can be raised and lowered as soon as possible, and the lowering of the rear wheel (4)
On a field headland where the aircraft is raised and the front wheels (6) are raised
The direction change operation can be easily performed .

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a lifting unit.

FIG. 2 is an overall side view of the transplanter.

FIG. 3 is an overall plan view of the transplanter.

FIG. 4 is an explanatory plan view of the transplanter.

FIG. 5 is an explanatory plan view of a lifting unit.

FIG. 6 is an explanatory sectional view of a planting clutch case portion.

FIG. 7 is an explanatory plan view of a lever unit.

FIG. 8 is a hydraulic circuit diagram.

FIG. 9 is a control circuit diagram.

FIG. 10 is a flowchart.

FIG. 11 is a hydraulic circuit diagram showing another modified example.

[Explanation of symbols]

(4) Rear wheel (6) Front wheel (56) (57) Elevating cylinder (elevating member) (84) Switching valve (operating tool) (85) Control valve (operating tool)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiro Wada 1-32 Chayacho, Kita-ku, Osaka City Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Hideo Nakajima 1-32 Chayacho, Kita-ku, Osaka City No. Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Masatoshi Sun Asahi No. 1-32, Chayacho, Kita-ku, Osaka-shi Inside Yanmar Agricultural Machinery Co., Ltd. (72) Masahiro Kanezaki 1-32, Chaya-cho, Kita-ku, Osaka-shi No. Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Yoshiaki Kuraya 1-32 Chaya-cho, Kita-ku, Osaka City Yanmar Agricultural Machinery Co., Ltd. (56) References JP-A-1-120209 (JP, A) (58) ) Surveyed field (Int.Cl. ⁷ , DB name) A01C 11/00-11/02

Claims (1)

(57) [Claims] 1. A front wheel (6) and a rear wheel (4) are provided.
A lifting member (57) for raising and lowering the front wheel (6),
An implant provided with an elevating member (56) for elevating and lowering the rear wheel (4)
Lifting and lowering members for the front wheel (6) and the rear wheel (4)
(57) The front and rear wheels (6) and (4) are omitted by the control.
Operating tool (84) for raising or lowering simultaneously in the same direction
When the rear wheel (4) is lowered, the front wheel (6) is raised.
An implanting device, comprising: an operating tool (85) for causing the implanting device to operate .