JPH08224020A - Movable agricultural machine - Google Patents

Abstract

PURPOSE: To compact constitution in an output transmission system of an engine and to make an operation environment healthy. CONSTITUTION: In a movable agricultural machine equipped with an engine 2 at the front part of a body, a driver's seat at the central part of the body and an agricultural machine of every kind at the rear part of the body, the engine 2 is loaded on a frame 3 of the body, an engine output shaft 53 is protruded forward from the engine 2 and a counter shaft 50 for transmitting the engine output is installed below the engine 2 and in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile agricultural machine, such as a riding type rice transplanter, which is equipped with a seedling mounting table and a planting claw for continuously performing 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 vehicle 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. Further, when it is taken out to the side of the machine, there is a drawback that the structure of the output transmission system for the rear mission case and the working machine (directly connected to the engine) becomes extremely complicated.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a mobile agricultural machine equipped with an engine in the front part of the vehicle body, a driver's seat in the central part of the vehicle body, and various agricultural working machines in the rear part of the vehicle body, the engine is mounted on the vehicle body frame. , The engine output shaft is projected to the front of the engine, and the counter shaft for transmitting this engine output is arranged in the front-rear direction on the lower side of the engine so that the engine output shaft, which is the high-speed rotating part of the engine, and the counter shaft The work environment is improved by setting the power transmission system of the engine to the side opposite to the engine from the driver's seat position to isolate noise from the engine and ambient temperature rise, and at the same time, the cooling air is favorably provided to the power transmission system on the most advanced side of the machine. This is taken in to extend the service life of the transmission system and improve its durability.

The counter shaft is inserted through a pipe fixed below the engine base to improve the support strength of the counter shaft and to prevent entanglement and entanglement of the shaft when the counter shaft rotates. It is intended to improve safety at times and during engine maintenance.

Further, the exhaust air portion of the engine is disposed on the front side of the engine and in the position opposite to the counter shaft in the left-right direction, and the exhaust air having the exhaust pipe, the muffler and the like is provided by the cooling air that is well taken in near the front end of the vehicle body. By cooling the parts efficiently, the engine efficiency is improved.

[0007]

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 which is a working machine equipped with a seedling table (16) for 6-row planting and a plurality of planting claws (17). The forward tilting seedling table (16) made of synthetic resin is supported on the planting case (20) via the lower rail (18) and the guide rail (19) so as to be slidable left and right, and at a constant speed in one direction. A rotary case (21) to be rotated is supported by the planted case (20), and a pair of claw cases (22) and (22) are arranged symmetrically with respect to the rotation axis of the case (21). The planting claws (17) (17) are attached to the tips of the claw cases (22) (22). 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 an elevating cylinder (28) for elevating and lowering the planting part (15) is connected to the lower link (26) via the link mechanism (27). At the same time as the front and rear wheels (6) and (8) are driven to move, the seedlings for one plant are taken out by the planting claws (17) from the seedling mounting table (16) that slides back and forth from side to side, and the seedlings are continuously seeded. Configure to perform planting work.

Further, in the figure, (29) is a main transmission lever, and (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) 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 (42).

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 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).

Further, as shown in FIGS. 9 to 10, a cylindrical bearing body (49) which is a pipe 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). Then, the counter shaft (50) is attached to the bearing body (49).
The counter pulley (51) is attached to the front end of the counter shaft (50) that allows the shaft to be inserted and supported to protrude forward of the bearing body (49), and the alternator (52) to the front side of the engine (2).
The left and right body frames (3)
An output shaft (53) is provided so as to project in front of the engine (2) approximately above the center between (3), an output pulley (54) is attached to the output shaft (53), and the output pulley (54) is connected to the counter. The pulley (51) is connected to the input pulley (56) of the alternator (52) via the V belt (57) and the output pulley (54) is connected to the output pulley (54). .

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 transmission case (4) is attached to a 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).

Further, 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 inserted. 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) and have 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) through the clutch (73), and the transmission case (4) is connected.
The driving force input to the front wheel drive shaft (62)
And the rear PTO shaft (76) and the like.

By the way, as shown in FIGS. 1 and 6, an air cleaner (77) for introducing clean air into the engine combustion chamber is arranged at the upper left outer side of the engine (2), while the air cleaner (77) is arranged at the front side of the engine (2). An exhaust pipe (78) connected to an exhaust port is connected to the muffler (41), and an insulating cover (7) surrounding the exhaust pipe (78) is provided.
9) is attached to the engine (2) so that exhaust heat is prevented from diffusing inside the bonnet (9) by the cover (79).

Further, as shown in FIGS. 1, 6, and 9 to 10, the alternator (52) arranged facing the front side of the engine (2) includes the muffler (41) and the exhaust pipe (78). Exhaust section composed of (80)
It is directly attached to the front side of the engine (2) at a position opposite to the front side of the engine (2), and an alternator receiver (82) is detachably attached to the front side of the engine (2) on the left side of the engine output shaft (53) through a bolt (81). Attach the alternator receiver (8
2) The bent edge (82a) and the standing shaft portion (82b) are attached to the outer vertical projecting edges (52a) (52) of the alternator (52).
The input pulley (56) of the alternator (52) which is fixed to the front surface of the engine (2) by fixing the b) via the bolt (83) is connected to the output pulley (5) of the engine (2).
4) is interlocked with a V-belt (57) so that the alternator (52) is driven to send power to the blower of the fertilizer applicator (36).

Further, the counter shaft (50) is also provided in the left-right direction opposite to the exhaust part (80), and the transmission system of the pulleys (51) (54) and the belt (55) is provided on the front side of the engine (2). Output shaft (53) of engine (2) by (84)
And the exhaust pipe (78) on the front side of the engine (2) are separated from each other, and the exhaust unit (80) and the transmission system (84) are arranged in the vicinity of the front end of the vehicle body to cool the wind. Is easily taken in to facilitate cooling and lowering of the ambient temperature to improve engine efficiency and prolong service life. Further, in this case, the alternator (52), the exhaust unit (80), and the transmission system (84)
By locating near the front of the engine (2)
The front-rear balance with the planting part (15) is improved, and rotation from the engine (2) is counter shaft (50).
A high-speed rotation output transmission system (84) for transmitting to the alternator (52) is provided at the most distal end of the vehicle body, and is separated from the driver's seat (13) at the center of the vehicle body to improve the intake of cold air to the transmission system (84). Not only improve, but also transmission system (8
The noise generated in 4) and the rising ambient temperature are prevented from being transmitted to the driver's seat (13) to the minimum, so that the operating environment is optimized and the safety is improved.

Furthermore, the counter shaft (50) is provided below the engine (2) so that the axial length (L) is substantially equal to the front-rear width of the engine (2), and the counter shaft (50) is below 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.

As shown in FIG. 11, the stopper device (85) for restricting the lowering of the planting part (15) beyond the setting is provided with the lower link (26) of the link mechanism (27) and the planting part (1).
5) stopper members (86) (87) provided between the hitch brackets (24) and having inclined contact surfaces (86a) (87a) on the inner surfaces of the lower link (26) and the hitch bracket (24) facing each other. Is fixed, and the stopper members (86) (87) are normally held in a separated state, while the link (26) and the bracket (24) have an acute angle when the planting portion (15) is lowered more than the set value. The stopper members (86) and (87) interfere with each other by bending to prevent the stopper members (86) and (87) from further descending.

Further, as shown in FIG. 12, a pedal hook (88) for connecting the left and right brake pedals (33) (33).
A pedal contact detection switch (90) for detecting the engagement between the hook stopper metal fitting (89) and a traveling travel detection switch (91) for detecting the traveling position of the main speed change lever (29) are provided. A controller (93) for controlling the lifting valve (92) of the lifting cylinder (28).
To these switches (90) and (92). As shown in FIG. 13, the left and right brake pedals (3
0) When the connection of (30) is detected by the switch (90), or when traveling on the road or the like, the switch (9) is used.
When detected by 1), the planting part (15) is lowered to approximately the same height as the minimum ground clearance of the main unit, which is a safe range, to enable stable and good traveling of the vehicle body with a sufficient fall angle. , Is configured to improve safety.

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) (5
4) and the belt (55) are interlocked to improve the maintainability of the transmission system (84) such as exchanging the belt (55), and improve the intake of cold air to the transmission system rotating at high speed. It is possible to improve the temperature of the transmission system and prevent it from increasing in temperature, thereby prolonging the service life of the transmission system. In addition, the noise and temperature rise generated in the high-speed rotation transmission system (84) are minimally transmitted to the driver's seat (13). Therefore, the driving environment at the position of the driver's seat (13) can be kept to a maximum and excellent.

Further, by disposing the exhaust part (80) such as the muffler (41) and the exhaust pipe (78) near the frontmost end of the vehicle body, the cooling effect can be improved and the engine efficiency can be improved. it can.

Further, by supporting the counter shaft (50) on the bearing body (49) fixed to the lower side of the engine base (39), not only the support strength can be improved but also the safety of the counter shaft (50) can be improved. The protection is achieved, and accidents involving the shaft (50) during the rotation of the counter shaft (50) and the entanglement of the shaft (50) are prevented.
The safety during maintenance can be improved.

[0026]

As is apparent from the above embodiments, the present invention equips the front part of the vehicle body with the engine (2), the central part of the vehicle body with the driver's seat (13), and the rear part of the vehicle body with various agricultural working machines (15). In a mobile agricultural machine, an engine (2) is mounted on a vehicle body frame (3), an engine output shaft (53) is projected toward the front of the engine (2), and a counter shaft (50) for transmitting this engine output is provided to the engine ( 2) Since it is arranged in the front-rear direction on the lower side, the transmission system (84) between the engine output shaft (53), which is the high-speed rotating part of the engine (2), and the counter shaft (50) is operated. From the seat (13) position to the side opposite the engine (2),
It is possible to prevent noise and rise in ambient temperature to improve the working environment as a state of being separated from the air conditioner, and at the same time, the cooling air is well taken into the transmission system (84) on the most advanced side of the machine to prevent It is possible to extend the service life and improve the durability.

Further, since the counter shaft (50) is inserted through the pipe (49) fixed to the lower side of the engine base (39), the supporting strength of the counter shaft (50) can be improved. At the same time, it is possible to prevent the shaft (50) from being entangled or entangled when the counter shaft (50) rotates, and improve the safety during work or maintenance of the engine (2).

Further, the exhaust section (80) of the engine (2)
Is disposed on the front side of the engine (2) and in the position opposite to the counter shaft (50) in the left-right direction, so that the exhaust pipe (78) and the muffler (41) are cooled by the cooling air that is well taken in near the leading edge of the vehicle body. Exhaust part (8
0) can be efficiently cooled to improve the engine efficiency.

[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 partial explanatory view of an engine section.

FIG. 10 is a partial explanatory view of an engine section.

FIG. 11 is a side view of a link mechanism section.

FIG. 12 is a descending control circuit diagram.

FIG. 13 is a flowchart.

[Explanation of symbols]

 (2) Engine (13) Driver's seat (15) Planting part (working machine) (39) Engine stand (49) Bearing body (pipe) (50) Counter shaft (80) Exhaust part

Claims (3)

[Claims] 1. A mobile agricultural machine equipped with an engine in the front part of the vehicle body, a driver's seat in the center part of the vehicle body, and various agricultural work machines in the rear part of the vehicle body. The engine is mounted on a vehicle body frame, and the engine output shaft projects forward from the engine. A mobile agricultural machine characterized in that a counter shaft for transmitting the engine output is arranged in the front-rear direction below the engine. 2. The mobile agricultural machine according to claim 1, wherein the counter shaft is inserted through a pipe fixedly provided under the engine base. 3. The mobile agricultural machine according to claim 1, wherein the air exhaust section of the engine is arranged on the front side of the engine at a position opposite to the counter shaft in the left-right direction.