JPH08214648A - Rice transplanter - Google Patents

Abstract

PURPOSE: To provide a rice transplanter having a compact size and improved safety and maintainability by taking out the power of an engine to the front side of the engine and extending a counter-shaft under the engine from the front side to the back. CONSTITUTION: The power of an engine 2 mounted on the front part of a car body is transmitted through a counter-shaft 50 to the input shaft of a transmission case 59 placed at the back of the body and taken out to the front side of the engine 2. The counter-shaft 50 is extended under the engine 2 from the front side to the back. Preferably, a transmission shaft 61 interlockedly connecting the input shaft of the transmission case 59 and the counter-shaft 50 is positioned nearly in the vertical range between the right and left main frames 3, 3 constituting the car body by side view.

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 carrying out seedling planting work.

[0002]

2. Description of the Related Art In a rice transplanter equipped with an engine in the front part of a vehicle body, the engine output shaft is normally taken out toward the rear or left and right sides of the body with respect to the mission in the rear part of the vehicle body.

[0003]

However, when the engine output shaft is taken out to the rear of the machine body, the exhaust air (hot air) of the engine is also discharged to the driver's seat side behind the engine, which causes environmental deterioration. However, there is a problem in that the output transmission of the engine is arranged in a narrow space between the engine and the driver's seat, and maintainability is poor. In addition, when it is taken out to the side of the machine, there is a drawback that the PTO output to the rear working machine becomes lateral and the transmission system becomes complicated.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a rice transplanter for transmitting the output of an engine mounted on the front portion of a vehicle body to an input shaft of a mission case at the rear portion of the vehicle body through a counter shaft, the output of the engine is provided. Of the engine, the counter shaft is provided so as to pass from the front side to the rear side of the lower side of the engine, and the engine output shaft, which is the high-speed rotating part of the engine, is located on the opposite side of the engine from the driver's seat position. The work environment is improved by reducing the noise to the worker and the rise in the ambient temperature due to the drive, and the transmission system of the engine output for the counter shaft is also arranged on the front side of the engine to improve the maintainability of this transmission system. It is a thing.

Further, a mission transmission shaft for interlockingly connecting the input shaft of the mission case and the counter shaft is provided in a substantially vertical width between the left and right main frames which form the vehicle body in a side view, and the left and right sides of the transmission shaft are left and right. The main frame is used for safe protection to improve the durability of the mission transmission shaft and maintain stable transmission performance.

Furthermore, the front-rear length of the counter shaft is made substantially equal to the front-rear width of the engine, so that the counter shaft can be simply installed in a unitary state under the engine base of the engine, and the safety of the transmission system can be improved. It is intended to be compact.

Furthermore, an alternator arranged at the front position of the engine is attached to the front surface of the engine so that this transmission system such as a pulley and a V belt can be compactly incorporated between the engine and the alternator, and at the front of the engine. The cool air is brought into contact with the alternator to prevent the temperature of the alternator from rising, and it is possible to install the alternator in a compact and good performance by providing a good front-rear balance around the engine.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of an engine section, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view of the same. In the figure, (1) is a traveling vehicle on which an operator rides, and an engine (2) is a center. It is mounted on a vehicle body frame (3) which is a frame, and the front wheels (6) for traveling paddy fields are supported in front of the mission case (4) through the front axle case (5), and the rear axle is provided at the rear of the mission case (4). Case (7)
And the rear axle case (7) supports the rear wheels (8) for traveling paddy fields. The spare seedling mounts (10) are attached to both sides of the bonnet (9) that covers the engine (2) and the like, and the mission case (12) is mounted by the vehicle body cover (12) on which an operator rides through the footrests (11). 4) and the like, a driver's seat (13) is attached to the upper part of the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) at the rear of the bonnet (9).

Further, (15) in the figure is a planting section provided with a seedling table (16) for planting 6 rows and a plurality of planting claws (17), which are made of a synthetic resin having a high front and low front. Forward tilting seedling stand (1
6) is supported on the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and at the same time, 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 transmission lever, (3
0) is a planted operation lever that is also a sub-shift lever, (31)
Is a planting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals, and (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) which is inclined 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 (42).

Furthermore, 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 case (45) 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 left and right front wheels (6) and (6) are turned around while the steering case (45) is erected on the upper surface of the steering case (45) and the output shaft (47) is projectingly provided on the lower surface of the steering case (45) at approximately the center between (3). 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 an output pulley (54) is attached to the output shaft (53), the output pulley (54) is connected to the counter pulley (51) through V belts (55) (55), and an alternator is also provided. The output pulley (54) is connected to the input pulley (56) of (52) via the V belt (57).

Further, as shown in FIGS. 7 to 8, a rear axle case (7) is fixed to the rear end of the vehicle body frame (3) by bolts, and a rear surface of the mission case (4) is attached to the front surface of the rear axle case (7). The clutch case (58) is integrally formed on the front surface on the right side of the transmission case (4) while being connected and fixed, and the continuously variable belt transmission case (5) which is also the transmission case on the front surface of the clutch case (58).
9) The right rear surface is connected and fixed, and the lifting cylinder (2
A hydraulic pump (60) for actuating 8) is fixed to the left rear surface of the belt transmission case (59), and is located between the left and right body frames (3) (3) in the shape of a square pipe at a position lower than this upper surface. The cases (4) (58) (59) and the hydraulic pump (60) are suspended and fixed, 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). , The output of the engine (2) is transmitted to the belt shift case (59), and the front wheel transmission shaft (62) is provided between the front axle case (5) and the mission case (4) to change the shift output of the mission case (4). It is configured to be transmitted to the front and rear wheels (6) and (8) via the axle cases (5) and (7).

Furthermore, a lower link fulcrum shaft (63) is provided at the rear end of the body frame (3), and the fulcrum shaft (6
The front end of the lower link (26) is attached to 3), and the gate-shaped support pillar (64) is erected between the rear ends of the left and right body frames (3) and (3), and the fertilizer applicator base (64) is installed at the upper end of the support pillar (64). 65) is provided, and the front end of the top link (25) is attached to the base (65) via the top link fulcrum shaft (66).

Further, a pedal fulcrum pipe (67) provided with the brake pedal (33) is provided, and the pipe (67) is inserted into the left and right vehicle body frames (3) (3), and both ends of the pipe (67) are provided. Are welded and fixed to the vehicle body frame (3), the pipe (67) is attached as a connecting member of the left and right vehicle body frames (3) and (3), and the left and right subframes (68) (6) to which the lifting cylinder (28) is attached.
8), and a sub-frame (6
8) The front end is welded and fixed to the pedal fulcrum pipe (67), and the rear end of the subframe (68) is welded and fixed to the upper end of the column (64).

Further, an input / output pulley (69) (70) and a speed change belt (71) for continuously changing the speed change ratio by changing the winding diameter are internally provided in the belt speed change case (59), with a universal joint. The front end of the input shaft (72) of the belt transmission case (59) is connected to the rear end of the counter shaft (50) through the transmission shaft (61), and the input shaft (72) is connected.
The hydraulic pump (60) is directly connected to the rear end, and the multi-plate friction type dry clutch (73), which is intermittently operated by the clutch pedal (32), is installed in the clutch case (58), and the belt transmission case (59) is The output shaft (74) is connected to the input shaft (75) of the mission case (4) via the clutch (73).

As shown in FIG. 9, the mission case (4) is attached to the bracket (76) of the vehicle body frame (3).
A belt shift case (59) is provided with a speed change shaft (78) for fixing the side surface with bolts (77) and fixing the belt (71) winding diameter of the pulleys (69) (70).
The shift shaft (78) is connected to the planting operation lever (30), and the clutch plates (79) forming the clutch (73) are attached to movable and fixed pressure plates (80) (8).
1), the pressure plate (81) on the fixed side is fixed to the input shaft (75) by bolts (82), and the clutch plate (81) is fixed to the input shaft (75) via the pressure plates (80) (81). 79) is supported. On the other hand, the clutch plate (79)
Is provided with a clutch drum (84) into which the rear end of the output shaft (74) is fitted in the shaft hole (85) of the drum (84) by fitting the spline (86) into the inner peripheral groove (83). A clutch yoke (88) for releasing the pressure of the movable side pressure plate (80) by a release (87).
Is swingably attached to the yoke shaft (89) of the clutch case (58), and when the clutch yoke (88) is moved against the clutch spring (90) by operating the clutch pedal (32), the clutch (73 ) Is set to turn off.

Further, the yoke (8) is provided between the shaft boss (92) of the fixed side pressure plate (81) and the bolt (82).
8) A washer (93) is provided to receive the spring reaction force at the time of disengagement. By removing this washer (93), the clutch (73) can be assembled from the end of this shaft (75). The clutch case (73) is prevented from coming off and fixedly assembled and fixed, while the mission case (4)
At the rear end of the input shaft (75) projecting to the rear side, a rotation preventing slit portion (94) is provided, and a spanner is engaged with the slit portion (94) when the bolt (82) is attached or detached. By fixing the input shaft (75), this shaft (7
It is configured so as to perform the detent of 5). It should be noted that instead of the slot portion (94), a pin may be provided at the shaft end of the input shaft (75) to prevent rotation.

Further, a PTO shaft (96) operatively connected to the input shaft (75) through a PTO speed change gear mechanism (95).
A mission cooling fan (97) is attached to a position near the outside of the mission case (4) of the PTO shaft (96).
The wind generated by the rotating fan (97) is blown onto the mission case (4) to cool the outer surface of the mission case (4) where the oil temperature rises under high load and high rotation to prevent the oil temperature rise. It is configured to achieve. Further, in this case, a fin along the flow of the cooling air from the fan (97) may be provided on the outer surface of the mission case (4), and the fan (97) may be attached to any shaft provided in the mission case (4). Is also good.

Further, a speed increasing pedal (98) for operating the planting traveling speed to the outside of the front surface below the driver's seat (13) of the rear step (12a) constituted by the vehicle body cover (12) and the left and right front and rear wheels ( 6) A differential lock pedal (99) for differential lock operation of the differential lock mechanism of (8) is provided.
As shown in 2, pedals (98) (99) and pedal shaft (10
0) -The pedal bearing plate (101) is integrally formed, and the left and right sub-frames (68) are assembled with the bolts (102) to reduce the number of parts and the number of assembling steps.

By the way, as shown in FIGS. 1 and 6, an air cleaner (103) for introducing clean air into the engine combustion chamber is arranged on the upper left outer side of the engine (2),
An exhaust pipe (104) connected to the exhaust port on the front side of the engine (2) is connected to the muffler (41), and a heat insulating cover (105) surrounding the exhaust pipe (104) is attached to the engine (2) to exhaust the exhaust gas. The cover (10) prevents heat from diffusing inside the bonnet (9).
5) is configured to prevent it.

Further, as shown in FIGS. 6 and 10 to 11, the alternator (52) arranged facing the front side of the engine (2) has a side opposite to the muffler (41) and the exhaust pipe (104). At the position, it is directly attached to the front surface of the engine (2), and the bolt (10) is attached to the front surface of the engine (2) on the left side of the engine output shaft (53).
6) via which an alternator receiver (107) is detachably attached, and a bent edge (107) of the alternator receiver (107) is attached.
a) and the alternator (52) on the standing shaft portion (107b)
The upper and lower outer protruding edges (52a) (52b) of the bolt (10
8) The input pulley (56) of the alternator (52), which is fixed to the front surface of the engine (2) by being fixed via the V belt (57), is attached to the output pulley (54) of the engine (2).
It is configured such that the generator power is supplied to the blower of the fertilizer applicator (36) by driving the alternator (52).

In this case, the heavy alternator (52) is arranged at the front position of the engine (2) to improve the front-rear balance with the planting part (15) and to improve the engine (2). ) In front of the muffler (41) and the exhaust pipe (104), separate the alternator (52) to minimize the adverse effects of engine heat and exhaust heat, and apply cool air to the alternator (52). Thus, the temperature rise of the alternator (52) itself is suppressed, and the structure around the engine is made compact and the weight is reduced.

Further, a high-speed rotation output transmission system such as the output pulley (54) and the belts (55) (57) of the engine (2) is provided at the most tip end side of the vehicle body and separated from the driver's seat (13). By improving the intake of cold air into the transmission system and improving the durability of the transmission system, noise generated in the transmission system and the driver's seat (1
It is configured to minimize the transmission to 3), improve the operating environment and improve the safety.

Furthermore, the counter shaft (50) is provided below the engine (2) so that its axial length (L) substantially matches the front-rear width of the engine (2). And the transmission shaft (61) is tilted in the vertical width of the body frame (3) in a direction opposite to the tilt of the body frame (3) in the vertical width of the body frame (3) in side view. Thus, interference with the installed parts of the body frame (3) such as the fulcrum pipe (67) can be avoided, and these can be compactly arranged, and the transmission shaft ( The left and right sides of 61) are safely protected, the durability of the transmission shaft (61) is improved, and the transmission performance is stably maintained for a long period of time.

This embodiment is constructed as described above, and the engine output shaft (53) is projected to the front of the engine (2) and the counter shaft (50) for communicating the bottom of the engine (2) to the front and back is connected to the vehicle body. Pulley (51) (54) at the front end
And the belt (55) are interlocked to improve the maintainability of the transmission system such as replacement of the belt (55) and improve the intake of cold air to the transmission system rotating at high speed to raise the temperature. Can be prevented and the service life of the transmission system can be extended.
Further, the noise and temperature rise generated in this high-speed rotation transmission system are minimized from being transmitted to the driver's seat (13).
3) The operating environment at the position can be maintained at the maximum.

[0028]

As is apparent from the above embodiments, according to the present invention, the output of the engine (2) mounted on the front portion of the vehicle body is transferred to the input shaft (72) of the mission case (59) at the rear portion of the vehicle body by the counter shaft (50). ), The output of the engine (2) is taken out to the front side of the engine (2) and the counter shaft (50) is passed from the front side to the rear side below the engine (2). Therefore, the engine output shaft (53), which is a high-speed rotating part of the engine (2), is moved from the driver seat (13) position to the opposite side of the engine (2) to reduce noise and ambient temperature of a worker due to driving the engine. The rise can be reduced, the working environment can be improved, and the transmission system of the engine output to the counter shaft (50) is also arranged on the front side of the engine to maintain the transmission system. It is capable of improving Nsu property.

The mission transmission shaft (61) for interlockingly connecting the input shaft (72) of the mission case (59) and the counter shaft (50) is connected to the left and right main frames (3) (3) constituting the vehicle body in side view. Since it is provided substantially in the vertical width between them, the left and right sides of the mission transmission shaft (61) are safely protected by the left and right main frames (3) (3), and the transmission shaft (61) It is possible to improve the durability of and to maintain stable transmission performance.

Further, since the front-rear length (L) of the counter shaft (50) is substantially matched with the front-rear width of the engine (2), the counter shaft (50) is located below the engine base of the engine (2). ) Can be installed in a simple structure with a simple structure, and the safety and compactness of this transmission system can be achieved.

Furthermore, since the alternator (52) arranged at the front position of the engine (2) is attached to the front surface of the engine (2), a pulley is provided between the engine (2) and the alternator (52). This transmission system such as (54), (56) and V-belt (57) can be compactly incorporated, and the cool air can be brought into contact with the alternator (52) in front of the engine to prevent the alternator from rising in temperature. It has a remarkable effect such that the front-rear balance is good and the alternator can be installed compactly and with good performance.

[Brief description of drawings]

FIG. 1 is an explanatory side view of an engine 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 a front explanatory view of an engine section.

FIG. 7 is a side view illustrating a mission case portion.

FIG. 8 is an explanatory plan view of a mission case portion.

FIG. 9 is a cross-sectional explanatory view of a clutch portion.

FIG. 10 is a side view of an alternator section.

FIG. 11 is a front explanatory view of an alternator section.

FIG. 12 is an explanatory view of mounting the speed increasing pedal portion.

[Explanation of symbols]

 (2) Engine (3) Frame (50) Counter shaft (52) Alternator (59) Transmission case (mission case) (61) Transmission shaft (72) Input shaft (L) Front-rear length

Claims (4)

[Claims] 1. The output of the engine mounted on the front part of the vehicle body,
In the rice transplanter that transmits to the input shaft of the mission case at the rear of the vehicle body through the counter shaft, the output of the engine is taken out to the front side of the engine, and the counter shaft is provided so as to pass from the front side to the rear side under the engine. Rice transplanter characterized by. 2. A transmission shaft for interlockingly connecting an input shaft of a mission case and a counter shaft is provided in a substantially vertical width between left and right main frames forming a side view vehicle body. Rice transplanter. 3. The rice transplanter according to claim 1, wherein the front-rear length of the counter shaft is substantially equal to the front-rear width of the engine. 4. A rice transplanter characterized in that an alternator arranged at a front position of the engine is attached to a front surface of the engine.