JP3445889B2 - Rice 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 riding type rice transplanter equipped with a seedling table and a planting claw for continuously performing seedling planting work.

[0002]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In a rice transplanter equipped with a main transmission means for changing the traveling speed on the road and an auxiliary transmission means for changing the planting traveling speed in the field independently, When the main shift is maintained at the planting work speed in the low speed state, the sub shift is operated from low speed to high speed to ensure an appropriate planting traveling speed. However, when the main shift is in the high speed state, when the sub shift is operated from the low speed to the high speed, the traveling is performed at a dangerous speed higher than the maximum speed in the main shift.

[0003]

Accordingly, the present invention is directed to
Main shift operation means for shifting the traveling speed and the change of the planted traveling speed.
Speed and planting work operation means to turn on and off the planting clutch.
Main speed is highest in rice transplanter equipped with each independently
When in the state, to the high speed side of the auxiliary shift and the entrance side of the planted clutch
It is equipped with a planting restraint system that regulates
Make sure that the running speed increases even more when in high speed.
In addition to preventing it, it also prevents the planting clutch from engaging.
The drive of the planting part was reliably prevented when driving on the road.
This enables good running .

In addition, the operation of the auxiliary shift of the planting work operation means
An auxiliary shift restraint member for regulating is provided, and the restraint member is used for the main shift operation.
The main gear shifting operation means is
When operating at high speed, disengage the planting clutch of the planting operation operation means.
Position or the low speed position of the auxiliary gear shift, the auxiliary gear shift check is performed in this guide groove.
The main control gear is at the maximum speed while the control member is projected.
Operation of the planting work operation means that operates the auxiliary shift
It is provided to regulate the
Stable running of the aircraft by preventing the running speed from increasing above a certain level
This is done to maintain proper traveling speed .

[0005]

[0006]

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is an explanatory view of a gear shift operation unit, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view of the rice transplanter.
Is a traveling vehicle on which an operator rides. The engine (2) is mounted on a vehicle body frame (3) which is a center frame, and the front wheels for traveling on rice fields ((a) through a front axle case (5) in front of the mission case (4) ( 6) is supported, and a rear axle case (7) is connected to the rear portion of the mission case (4) to connect the rear axle case (7).
Support the rear wheels (8) for traveling in the paddy field. The spare seedling mounts (10) are attached to both sides of the hood (9) that covers the engine (2) and the mission case (12) is mounted by the vehicle body cover (12) on which an operator rides via the footrests (11). 4) etc., the driver's seat (13) is attached to the upper part of the vehicle body cover (12), and the steering handle (14) is provided in front of the driver's seat (13) at the rear of the hood (9).
To provide.

Further, (15) in the figure is a planting section equipped with a seedling table (16) for planting 6 rows, a plurality of planting claws (17), etc. Forward tilting seedling stand (1
6) is supported by the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and the rotary case (21) is rotated at a constant speed in one direction. The pair of claw cases (22) and (22) are supported at the case (20), and a pair of claw cases (22) and (22) are arranged symmetrically around the rotation axis of the case (21).
(22) Attach the planting claws (17) (17) to the tip. Further, a hitch bracket (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a lift link mechanism (27) including a top link (25) and a lower link (26) is provided. A hitch bracket (24) is connected to the rear side of the traveling vehicle (1), and the link mechanism (2
A lifting cylinder (28) for lifting and lowering the planting part (15) through the lower part (7) is connected to the lower link (26) to drive and move the front and rear wheels (6) and (8), and at the same time reciprocate left and right. One seedling worth of seedlings is taken out from the sliding seedling placing table (16) by the planting claws (17), and the seedling planting operation is continuously performed.

Further, in the figure, (29) is a main gear shift lever which is a main gear shift operation means, (30) is a work lever with a planting which also serves as an auxiliary gear shift lever which is a sub gear shift operation means, (31) is a planting sensitivity adjusting lever, (32) is the main clutch pedal, (33)
(33) is a left and right brake pedal, (34) is a center float for two-row leveling, (35) is a side float for two-row leveling, and (36) is a side-row fertilizer applicator for six rows.

Further, as shown in FIGS. 4 to 6, the pedestals (37) are integrally fixed to the upper surface of the front portion of the body frame (3) to be tilted to the front low rear height (inclination angle of about 4 degrees), and the pedestal ( 37) ... The front and rear direction of the anti-vibration rubber (3
8) is attached to the engine base (39), the engine (2) is mounted on the engine base (39), the fuel tank (40) is mounted on the left side of the engine (2), and the engine (2) is mounted on the left side of the engine (2). While installing the muffler (41) on the right side,
A battery (43) is attached to the front end side of the vehicle body frame (3) via the front frame.

Further, a case base (44) is integrally fixed to the vehicle body frame (3), a steering case (45) is attached to the case base (44), and the steering base (46) is inserted into a tubular body (46) which is a handle column. Attach the steering shaft (14a) of the steering handle (14) to the left and right body frames (3).
The steering case (45) is erected on the upper surface of the steering case (45) substantially at the center between (3) and the output shaft (47) is projected on the lower surface of the steering case (45) to turn the left and right front wheels (6) and (6). The steering arm (48) is connected to the output shaft (4
It is attached to 7).

A cylindrical bearing body (49) which is substantially horizontal in the front-rear direction is welded and fixed to the lower side of the engine base (39) below the engine (2), and the counter shaft (49) is fixed to the bearing body (49). 50) is inserted and supported, and the counter pulley (5) is attached to the front end of the counter shaft (50) that projects forward from the bearing body (49).
1) is mounted and an alternator (52) is arranged in front of the engine (2) so as to face the output shaft (53) in front of the engine (2) substantially above the center between the left and right body frames (3) and (3). And the output pulley (54) is attached to the output shaft (53), the output pulley (54) is connected to the counter pulley (51) via the V belts (55) (55), and the alternator is also provided. The output pulley (54) is connected to the input pulley (52) via a V-belt.

Further, a rear axle case (7) is bolted and fixed to a rear end portion of the vehicle body frame (3), a rear surface of the mission case (4) is connected and fixed to a front surface of the rear axle case (7), and a transmission case (4). ) Is integrally formed with a clutch case (58) on the right front side, and the right side rear surface of the continuously variable belt transmission case (59) which is also a transmission case is fitted and fixed (inlay) on the front side of the clutch case (58), and the lifting cylinder (28 ) Actuates the hydraulic pump (60) to the belt shifting case (59)
Is fixed to the left rear surface of the case, and is located at a position lower than the upper surface between the square pipe-shaped left and right body frames (3) and (3), and the cases (4) (58) (59) and the hydraulic pump (60). And a transmission shaft (61) with a universal joint is provided between the rear end of the counter shaft (50) and the belt transmission case (59) to transmit the output of the engine (2) to the belt transmission case (59). A front wheel transmission shaft (62) is provided between the front axle case (5) and the mission case (4), and the shift output of the mission case (4) is transmitted through the axle cases (5) and (7) to the front and rear wheels (6) ( It is configured to tell 8).

Further, the belt input / output pulleys (63) and (64) and the speed change belt (65), which change the winding diameter to change the speed ratio steplessly, are provided in the belt speed change case (59).
The input shaft (66) of the belt transmission case (59) connected to the transmission shaft (61) with a universal joint is connected to the output shaft (67) via the belt (65), and the input / output pulleys (63) (64) are connected. ) Input / output cams (68) and (69) for changing the belt winding diameter are attached to the transmission shaft (7
A gearshift arm (71) is provided at the front end of the gearshift shaft (70) which is fixed to the belt gearshift case (0) and projects to the front of the belt gearshift case (59). In addition, P that transmits the driving force to the planting part (15)
The TO shaft (72) is provided in the gear shift case (4), and the shift gears inside the gear shift case (4) are switched by operating the main shift lever (29) to change the output shaft (67).
It is configured such that the driving force after the continuously variable shift input from the gear shift case (4) to the gear shift case (4) is gear-shifted and transmitted to each shaft (62) (72).

Further, as shown in FIG. 7 to FIG. 9, the planting work lever (30) moves up and down the planting section (15), turns on and off a planting clutch (not shown), and runs with planting. The work lever (30) is used for performing three kinds of operations of speed shifting.
Attached to the lever shaft (73), and the lifting valve with plant (74)
The lifting operation arm (75) for switching between the lever shaft (7
3) is integrally fixed, and a link shaft (77) for switching the belt continuously variable transmission mechanism (76) in the belt transmission case (59) is provided to provide a pair of sector gears (7).
8) A shaft (7) linked with the lever shaft (73) via (79)
7) are linked together. The lifting operation arm (75) and the sector gear (78) are integrally formed by the same member, and the lever shaft (73) and the link shaft (77) are attached to a bearing (80) fixed to the vehicle body frame (3) by bolts. Is rotatably supported.

Further, a gas spring (8) which is a lever returning member for returning the working lever (30) to the lowest speed side.
1) is connected to the lever shaft (73) via an arm (82), and a potentiometer type shift position sensor (83) for detecting the shift operation position of the work lever (30).
And a potentiometer-type work control sensor (84) for detecting the on / off operation position of the planting clutch and the lifting operation position of the planting section (15), and these sensors (83) (8)
4) The sensor arm (85) (86) of 4) is linked shaft (77)
And the operating arms (87) (88) of the lever shaft (73).

Further, a brake plate (90) is provided on the linkage shaft (77) via a one-way clutch (89), and a brake shoe (9) is provided on the brake plate (90) via a spring.
1) is always crimped, and the lever (3) is resisted against the gas spring (81) by the braking force of the brake plate (90).
0) is supported at the operating position and the lever (3
0) When switching from low speed to high speed, one-way clutch (89)
When the lever (30) can be moved to a high speed side without the braking force of the brake plate (90) acting due to the idling of the main clutch pedal (32), the main clutch is disengaged. The brake shoe (91) is separated from the brake plate (90) to release the braking operation, and the auxiliary shift is returned from "high speed" to "low speed" by the action of the gas spring (81).

Then, the speed change links (93) (94) and the speed change rod (95) which are swung around the speed change support shaft (92).
The gear shift operation arm (97) of the linkage shaft (77) is connected to the gear shift arm (7) of the belt gear shift case (59) via the gear (96).
1), the cams (68) (69) of the transmission shaft (70) are rotated by operating the work lever (30), and the belt (65) winding diameter of the input / output pulleys (63) (64) is changed. It is configured to perform a continuously variable shift operation.

As shown in FIGS. 1 and 9, the main speed change lever (29) has a speed change rod (98) in a gear speed change case (4).
The main gear shift lever (29) and the planting work lever (30) are connected to each other to operate forward (planting traveling) and backward traveling at a low speed of the aircraft and forward traveling (road traveling) at a high speed. In between, auxiliary shift and main shift restraining means (101) (102) for restricting the movement of the levers (30) (29) of the opponent by the restraining members (99) (100) are provided.

The auxiliary shift restraint means (101) allows the main shift lever (29) to move forward and backward through a compression spring (104) in a lever guide groove (103) at the highest speed (road running) position. High-speed detection plate (105), a detection rod (107) for fixing the detection plate (105) to one end side and slidably supporting the guide body (106) left and right, and the other end side of the rod (107) Control plate fixed to the (108)
And a check member (99) which is attached to the main shift lever (2) via an adjusting bolt (109) so as to be adjustable in the front-rear position.
When the detection plate (105) is pressed by the highest speed operation of 9) and retracts against the spring (104), the lever guide groove ( Checking member (99) in 110)
To project the lever (30) to restrict the movement of the lever (30) toward the planted clutch or the high speed side of the auxiliary shift.

Further, the main transmission restraint means (102) is provided with a lever guide groove (1) at a high speed position for planting the working lever (30).
A high speed detection plate (112) for auxiliary shift which is made to move forward and backward through a compression spring (111), and the detection plate (11).
The above-mentioned check member (10) which is a check rod for fixing (2) to one end side and slidably supporting the guide body (113) from side to side.
0), and when the detection plate (112) is pressed by the high-speed operation of planting of the work lever (30) and moves backward against the spring (111), the main shift lever (29) moves at a low speed (planting travel). ) Position, the other end of the restraining member (100) is projected into the lever guide groove (103), and the lever (2
It is configured to regulate the movement of 9) to the high speed side.

As described above, at the maximum speed of the main gear shift, the operation lever (30) is restricted from being operated to the high speed side by the restraining member (99) so that the sub gear shift is performed at the low speed or the planted clutch is disengaged. In this state, the traveling speed is prevented from further increasing, and when the sub-transmission is already high speed, it is prevented that the main speed change lever (29) is operated to the highest speed side.
00) to maintain the main shift at a low speed (running with planting) to prevent the running speed from increasing more than the planting high speed. In this case, the adjustment of the check member (99) such as the disengaged clutch disengagement position or the planting low speed position in the auxiliary shift is performed even after the vehicle body cover (12) is assembled.
This is easily made possible by operating the adjusting bolt (109).

FIG. 10 to FIG. 12 show a sub-shift and a main shift in which both the main shift and the planting work levers (29) and (30) can be regulated by a single plate cam-like check member (114). The structure of the restraint means (101) (102) is shown, and the lever shaft (7) at the base end of the working lever (30) is shown.
3) The check member (114) is fixed to the fixed mounting plate (115) at the left end of (3) so as to be pivotally adjustable about the shaft (73) through an elongated hole (116a) and an adjusting bolt (116), and Fixed holder (11) for frame (3)
7) The arm pin 119 at the right end of the lever shaft 118 of the main gear shift lever 29 which is movably supported to the left and right is provided with an engaging pin 121 on the right side so as to be retractable via a compression spring 120. Then, as shown in FIG. 11, the main transmission lever (29)
Is at the highest speed (road running) position, the front side edge of the check member (114) in the work lever (30) in which the planted clutch is in the disengaged position or the auxiliary shift position is in the low speed position is engaged with the engagement pin (121).
When the work lever (30) is already in the planting high speed position, as shown in FIG. 12, the work lever (30) cannot be operated to the planting clutch entry side or the high speed side. , Main shift lever (29) in low speed (running with planting) position
The engaging pin (121) is brought into contact with the rear side edge of the restraining member (114) so that the main transmission lever (29) cannot be operated to the highest speed side. .

FIGS. 13 to 14 show a structure in which the lifting cylinder (28) has a cylinder spring and the lowest height of the planting part (15) is determined by the bending of the cylinder spring. The lowering height of the hitch bracket (24) is regulated by the lifting link regulating means (122).
3) A stopper bolt (12
4), when lowering the planting part (15), lower link (26)
The contact plate (125) fixed to the contact plate is fixed so as to restrict the lowering.

In FIG. 14, the restriction slot (128) of the restriction plate (127), which is swingably attached to the hitch bracket (24) via the pivot (126), is engaged with the top link (25). The pin (129) is engaged and connected with the plant so that it can be lifted and lowered so that only the lowest position is regulated.

FIGS. 15 to 16 show a marker wire (130) for undulating the left and right muscle pulling markers and a marker connecting member (13) for connecting the ends of the wire (130) such as an undulating plate.
1) shows a wire mounting structure with the one shown in FIG. 15, which is an upper side surface (131a) and left and right side surfaces (131b).
A slit groove (132) having a constant depth from the upper side surface is formed in the connecting member (131) having (131b), and the connecting end side of the wire (130) is fitted into the slit groove (132). , The wire (130) fitted in the slit groove (132) is pressed from above by the wire stopper plate (134) joined to the back surface of the upper side surface (131a) and fixed by the bolt (133). It is configured to perform the fixing.

Further, as shown in FIG. 16, a gate-shaped clip (135) is formed on the front and back surfaces of the upper side surface (131a) of the connecting member (131) with respect to the wire (130) fitted in the slit groove (132). Insert and crimp the slit groove (1
It is configured to prevent the wire (30) from being pulled out from the wire (32).

[0028]

As is apparent from the above-described embodiments, the present invention provides a main gear shift operating means (29) for shifting the traveling speed and a plant.
Planting work that shifts the traveling speed and turns on and off the planting clutch.
For rice transplanters equipped with work operation means (30) independently
When the main shift is at the maximum speed,
And planting restraint means (1) that regulates the entry side of the planting clutch.
01) is provided, when the main speed change is at maximum speed,
Be sure to prevent the traveling speed from increasing more than this.
In addition, it also prevents the planting clutch from engaging,
When driving on the road
It is possible to drive .

Further, the sub-shift of the planting work operation means (30)
Is provided with an auxiliary gear shift check member (99) for controlling the operation of
The control member (99) can be freely adjusted to the main shift operation means (29)
Operate the main gear shift operation means (29) at high speed by interlocking them.
At this time, the planting clutch disengagement position of the planting work operation means (30)
Alternatively, at the low speed position of the auxiliary shift, enter the guide groove (110).
With the auxiliary gear shift restraint member (99) protruding, the main gear shift is
Planting work operation means that operates auxiliary shift at the maximum speed state
(30) provided so as to restrict the operation to the high speed side
When driving on the road, the traveling speed increases more than the setting.
To prevent the vehicle from traveling in a stable manner and
Appropriate maintenance can be achieved .

[0030]

[0031]

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a shift operation unit.

FIG. 2 is an overall side view of a riding rice transplanter.

FIG. 3 is an overall plan view of a riding rice transplanter.

FIG. 4 is a side view of the traveling vehicle.

FIG. 5 is a plan view of the traveling vehicle.

FIG. 6 is an explanatory diagram of a continuously variable transmission mechanism.

FIG. 7 is an explanatory diagram of a work lever portion.

FIG. 8 is an explanatory diagram of a sector gear unit.

FIG. 9 is a rear explanatory view of a shift operation unit.

FIG. 10 is a rear view for explaining the gear shift operation unit.

FIG. 11 is a side view of the restraint member.

FIG. 12 is a side view of the restraint member.

FIG. 13 is a side view of a lifting link restricting portion.

FIG. 14 is a side view of a lifting link restricting portion.

FIG. 15 is an explanatory diagram showing a marker wire fixing structure.

FIG. 16 is an explanatory diagram showing a fixing structure of a marker wire.

[Explanation of symbols]

(29) Main shift lever (main shift operating means) (30) Planting work lever (sub gear shift operation means) (99) Checking member (100) Check member (101) Auxiliary shift restraint means (102) Main shift restraint means

Claims (2)

(57) [Claims] 1. A main shift operating means (2 ) for shifting a traveling speed.
9), change the planting speed and turn on / off the planting clutch.
Independently equipped with a planting work operation means (30)
In the rice transplanter, when the main shift is at the maximum speed, the sub shift
Planting check that restricts the high-speed side and the entry side of the planting clutch.
Rice transplanter characterized by having a control means (101) . 2. A sub-shift operation of a planting operation means (30).
A sub-shift check member (99) for controlling the work is provided, and the check unit
Material (99) is linked to the main shift operation means (29) in an adjustable manner
When connected and operating the main gearshift operation means (29) at high speed
The planting clutch disengaged position of the planting operation means (30) or
Or at the low speed position of the auxiliary gear shift
With the gear shift restraint member (99) protruding, the main gear shift is maximized.
Planting operation means (3
The rice transplanter according to claim 1, wherein the rice transplanter is provided so as to restrict the operation of 0) to the high speed side .