JPH0885354A - Movable agricultural machinery - Google Patents

Abstract

PURPOSE: To perform maintenance of a power connection/disconnection part without decompositing a transmission part in a movable agricultural machinery in which an engine, the power connection/disconnection part, and the transmission part are disposed almost along a center line in the car body length direction by disposing the power connection/disconnection part on the side opposite to the engine by sandwiching a transmission. CONSTITUTION: In a movable agricultural machinery, an engine is located at a front part, and this engine, a clutch case 67 for power connection/ disconnection, and a stepless belt transmission case 38 are disposed along a center line in the car body length direction. In this case, the clutch case 67 is located on the opposite side of the engine to the belt transmission case 38. Maintenance to the clutch case 67 can thus be performed without decomposing the transmission case 38. A clutch pedal 32 and a clutch case 67 are located by sandwiching the transmission case 38 and a clutch rod 87 to transmit step force to a clutch pedal 32 is extended above the transmission case 38, so that the overhang of the clutch arm 86 may be made small.

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 rice transplanter which is equipped with a seedling mount and a planting claw for continuously performing seedling work.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Laid-Open No. 63-150146, there has been a technique of arranging an engine, a power connecting / disconnecting portion, and a gear shifting portion on a substantially center line in a longitudinal direction of a machine body.

[0003]

In the above-mentioned prior art, since the power connecting portion is internally provided in the case of the transmission portion in which the transmission pulley is installed, it is necessary to disassemble the transmission pulley portion at the time of maintenance of the power connecting portion. However, maintenance of the power connecting / disconnecting part is troublesome, and heat is generated from both the speed change pulley part and the power connecting / disconnecting part, so that cooling is troublesome and the transmission efficiency is likely to be lowered.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a mobile agricultural machine in which an engine, a power connecting / disconnecting portion, and a transmission portion are arranged on a substantially centerline in the longitudinal direction of the machine body, the transmission portion is sandwiched between the engine and the engine. Since the power cut-off portion is arranged on the side, maintenance of the power cut-off portion can be easily performed without disassembling the transmission portion, and the power cut-off portion is arranged between the engine and the transmission portion. In comparison, the maintenance workability of the power connecting / disconnecting portion can be easily improved, and the body structure in which the heavy gear shifting portion is brought close to the engine and the working machine is mounted on the side opposite to the engine can be configured with good front-rear balance.

Further, a clutch pedal and a power connecting / disconnecting portion are arranged by sandwiching the transmission portion, and a clutch rod connecting the clutch pedal and the power connecting / disconnecting portion is extended above the transmission portion. Compared to the structure in which the clutch rod is provided by using the above method, the overhang of the clutch arm provided in the power connecting / disconnecting portion can be minimized to easily prevent the clutch arm from being twisted, and the lower portion of the transmission portion is used. As compared with the structure in which the clutch rod is provided, it is possible to easily reduce the adhesion of mud to the clutch rod and the like due to the clutch rod being separated from the field scene.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of a transmission unit, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view of the same. In FIG. 1, (1) is a traveling vehicle on which an operator mounts an engine (2). The front frame (3) is mounted above the front part of the body frame (3), and the front wheel (6) for traveling the paddy field is supported in front of the gear shift case (4) through the front axle case (5), and the rear part of the gear shift case (4) is supported. The rear axle case (7) is connected to the rear axle case (7), and the rear axle case (7) supports the rear wheel (8) for traveling paddy fields. Then, the spare seedling mounts (10) are attached to both sides of the bonnet (9) covering the engine (2), etc., and the gear shift case (4) is attached by the vehicle body cover (12) on which an operator rides through the step (11). ) Etc., 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, a flat portion (12a) for a work passage on which a work is boarded is formed in the vehicle body cover (12), and the flat portion (1) of the cover (12) is formed.
2a) is extended to the lateral position of the step (11), and the step (11) is used to easily get on and off the flat portion (12a).

Further, (15) in the drawing is a planting section comprising a seedling table (16) for planting 6 rows, a plurality of planting claws (17), etc. 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 support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and travels via a link mechanism (27) including a top link (25) and a lower link (26). A supporting frame (24) is connected to the rear side of the vehicle (1), and an elevating cylinder (28) for elevating and lowering the planting part (15) through the link mechanism (27) is connected to the lower link (26). Front and rear wheels (6)
(8) is driven to move, and at the same time, the seedlings for one plant are planted from the seedling table (16) that slides back and forth to the left and right.
It is taken out according to 7) and the seedlings are planted continuously.

Further, in the figure, (29) is a main transmission lever, and (3
(0) is a sub-shift lever for planting up / down and work traveling gear shifting, (3
1) is a planting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals, and (3)
4) 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 and 5, the engine (2) is mounted on the front part of the pair of right and left rectangular tubular body bodies (3) (3), and the front axles (37) (37) are mounted. The front axle case (5) that pivotally supports the left and right front wheels (6) (6) via the vehicle body frame (3) behind the engine (2)
(3) A continuously variable belt shifting case (38) is provided between the left and right vehicle body frames (3) and (3) behind the front axle case (5), which is mounted on the lower surface, and the left and right vehicle body frames (38) behind the continuously variable transmission case (38) ( 3) A rear gear case (4) is provided between (3) and a rear axle case (7) that pivotally supports the left and right rear wheels (8) (8) via rear axles (39) (39). (3) (3) The output of the engine (2) is fixed to the lower surface of the rear end of each shift case (38).
The driving force is transmitted to each of the axle cases (5) and (7) via (4) to drive the front and rear wheels (6) and (8).

Further, right and left columns (40) (40) are erected on the upper surfaces of the rear end portions of the left and right body frames (3) (3), and the upper ends of the left and right columns (40) (40) are connected by a horizontal frame (41). The column (40) and the horizontal frame (41) are integrally fixed to each other to form a portal shape in a front view. Then, between the brake pedal receiving shaft (42) in the middle of the body frame (3) and the middle of the horizontal frame (41), subframes (43) and (43) that are inclined forward, rearward, and high are installed, and
Between the sub-frames (43) (43), the lifting cylinder (2
8), and the link mechanism (27) formed by the top link (25) and the lower link (26) is attached to each frame (3) (41) via the support shafts (44) (45). Link mechanism (27) by (28)
The planting part (15) is moved up and down by rocking.

Further, as shown in FIGS. 6, 7 and 8, a fertilizer application hopper (46) for containing fertilizer, a fertilizer feeding case (47) for quantitatively supplying fertilizer, and floats (34) (35).
The fertilizer applicator (36) is provided with a blower turbo fan (50) for discharging fertilizer to the side-row fertilizer chute (48) through the flexible transfer hose (49) and a cylindrical air tank (51). A turbo fan (50) is attached to the right end of the air tank (51), and six sets of six fertilizer feeding cases (47) are arranged above the air tank (51). Also, the left and right base frames (52) are provided on both sides of the horizontal frame (41) at the rear end of the body frame (3).
(52) is attached, the fertilizer applicator (36) is provided through the base frame (52) which is horizontally laid horizontally in the front-rear direction, and the air tank (51) is bolted to the left and right base frames (52) (52). A side stay (54) is fixed between the rear end of the base frame (52) and the vehicle body frame (3), and is horizontally laid horizontally. …
And the fertilizer applicator (3) through the four elevating rails (56) (56) (56) (56), one set of front and rear, and two pairs of left and right.
6) Mount vertically. In addition, the left and right gas springs (57) (57) allow the fertilizer applicator (3
6) is attached, and the rear axle case (7) arranged at the rear end of the vehicle body frame (3) is configured to support the weight of the fertilizer applicator (36).

Further, right and left body frames (3) and (3), which are located directly below the engine (2) and near the left body frame (3).
In between, a counter bearing tube (49) is fixed substantially horizontally in the front-rear direction, the receiving tube (49) is cantilevered with the front side of the counter shaft (50), and the counter pulley is provided on the rear end side of the counter shaft (50). (51) is attached, the alternator (52) is fixed to the right body frame (3) on the left side of the tubular body (45), and the alternator (52) is attached to the rear surface of the engine (2).
The left and right body frames (3)
The output shaft of the engine (2) (5
3) is provided, an output pulley (54) is attached to the output shaft (53), the output pulley (54) is connected to the counter pulley (51) via V belts (55) (55), and an alternator is provided. Input pulley (56) of (52)
The output pulley (54) is connected to a V belt (57).

Further, as shown in FIGS. 1, 4 and 9, a clutch case (67) is provided on the right front surface of the gear transmission case (4) which is fixedly connected to the front surface of the rear axle case (7).
Is formed integrally, and the hydraulic pump (68) for connecting and fixing the right side rear surface of the continuously variable belt transmission case (38) to the front surface of the clutch case (67) and operating the lifting cylinder (28) is provided on the left side of the belt transmission case (38). The gear shift case (4) is fixed to the rear surface by bolting the left and right side surfaces of the gear shift case (4) to the left and right vehicle body frames (3) (3), and the front surface of the belt shift case (38) is bolted to the pedal fulcrum pipe (42). The cases (4), (38) and (67) and the hydraulic pump (68) are fixed and fixed at a position lower than the upper surface between the square pipe-shaped left and right body frames (3) and (3).
Is suspended and fixed with bolts.

Further, an input / output pulley (69) (70) and a V-belt (71) for changing the gear ratio continuously by changing the winding diameter are provided in the belt gear case (38).
The front end of the input shaft (73) of the belt transmission case (38) is connected to the rear end of the counter shaft (59) via the transmission shaft with universal joint (72), and the hydraulic pump (68) is connected to the rear end of the input shaft (73). And a multi-disc friction type dry clutch (74) which is intermittently operated by the clutch pedal (32) in the clutch case (67).
The output shaft (75) of the belt shift case (38) is connected to the input shaft (76) of the gear shift case (4) by the clutch (74).
Are connected via.

A traveling output shaft (78) is connected to the input shaft (76) through a traveling transmission gear mechanism (77),
Front and rear axles (37) (3) supporting front and rear wheels (6) (8)
9) The traveling output shaft (78) is connected to the front and rear wheel transmission shafts (79) (80) to drive the front and rear wheels (6) (8), and the input shaft (76) is connected to the PTO speed change gear. The PTO shaft (82) is connected through the mechanism (81),
The planting part (15) is driven through the shaft (82), and the output of the PTO shaft (82) is branched by the sprocket (83) near the transmission case (4) to feed the fertilizer applicator (36) (4).
7) to drive the blower turbo fan (50)
The inside of the belt speed change case (38) is connected to the intake part of the belt via a duct (84), and the dry exhaust air of the belt speed change case (38) is used for feeding fertilizer of the fertilizer applicator (36). The fan (50) blows the fertilizer to dry the delivery pipe (49) and the fertilizer chute (48) to prevent the pipe (49) and the chute (50) from being clogged with fertilizer. Water is prevented from entering the case (38) and the fan (50), and the intake noise of the fan (50) is reduced.

Further, as shown in FIGS. 1, 5 and 9, the engine (2) and the clutch case (6) serving as a power connecting / disconnecting portion.
7) and a continuously variable belt shifting case (38) which is a shifting unit
In a mobile agricultural machine in which is disposed substantially on the center line in the longitudinal direction of the machine body, a clutch case (67) for power disconnection is arranged on the side opposite to the engine (2) with the belt transmission case (38) interposed therebetween. The clutch case (67) can be maintained without disassembling the belt shift case (38), and the engine (2) and the belt shift case (3) can be maintained.
8), the clutch case 67 is improved in maintenance workability as compared with the structure in which the clutch case 67 is arranged between the engine 8 and the heavy belt transmission case 38, and the engine 2 is brought close to the engine 2. The body structure in which the planting part (15), which is a working machine, is mounted on the opposite side can be configured with good front-rear balance. In addition, the belt shift case (3
8) A clutch rod (87) for sandwiching the clutch pedal (32) and the clutch case (67) to connect the arm (85) of the clutch pedal (32) and the clutch arm (86) of the clutch case (67). Is extended above the belt shift case (38), and the clutch case (67) is provided in comparison with the structure in which the clutch rod (87) is provided by utilizing the left and right sides of the belt shift case (38).
The overhang of the clutch arm (86) provided in the clutch rod (87) can be made as small as possible, and the clutch rod (87) can be provided as compared with the structure in which the clutch rod (87) is provided below the belt transmission case (38). It is configured to reduce the adhesion of mud.

Further, FIG. 10 shows a modified example of FIG. 9, in which a belt shift case (38) is attached to the front surface of the gear shift case (4), and a clutch case (67) and a hydraulic pump (68) are gear-shifted. It is attached to the rear surface of the case (4) and includes an engine (1), a clutch case (67),
In a mobile agricultural machine in which a gear shift case (4), which is a shift unit, is arranged approximately on the center line in the longitudinal direction of the machine body, a clutch case (67) is arranged on the opposite side of the engine (2) with the gear shift case (4) interposed. The clutch case (67) can be maintained without disassembling the gear shift case (4), and the heavy gear shift case (4) is brought close to the engine (2) and planted on the opposite side of the engine (2). The structure of the body to which the part (15) is attached has a good front-rear balance.

[0018]

As is apparent from the above embodiments, the present invention is designed to move the engine (2), the power connecting / disconnecting portion (67), and the speed change portion (38) substantially on the center line of the machine longitudinal direction. In an agricultural machine, the transmission (38) is sandwiched between the engine (2)
A power disconnecting section (67) is arranged on the opposite side to the power disconnecting section (6) without disassembling the transmission section (38).
The maintenance of 7) can be easily performed, and the power connecting portion (67) is provided between the engine (2) and the transmission portion (38).
It is possible to easily improve the maintenance workability of the power connecting portion (67) as compared with the structure in which the
It is possible to construct a body structure in which the heavy speed change portion (38) is brought close to the engine (2) and the working machine (15) is mounted on the side opposite to the engine (2) with good front-rear balance.

A clutch rod (87) for connecting the clutch pedal (32) and the power interrupting portion (67) is arranged by sandwiching the speed change portion (38) between the clutch pedal (32) and the power interrupting portion (67). ) Is extended above the speed change unit (38) and compared with a structure in which the clutch rod (87) is provided by utilizing the left and right sides of the speed change unit (38).
7), the overhang of the clutch arm (86) can be minimized to easily prevent twisting of the clutch arm (86), and the clutch rod (87) is provided below the transmission portion (38). Compared with the structure, it is possible to easily reduce the adhesion of mud to the clutch rod (87) and the like due to the clutch rod (87) moving away from the field scene.

[Brief description of drawings]

FIG. 1 is a side view illustrating a transmission unit.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

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

FIG. 5 is a plan view of the same.

FIG. 6 is a side view of the fertilizer application unit.

FIG. 7 is a plan view of the same.

FIG. 8 is a rear view of the same.

FIG. 9 is a drive system road map.

FIG. 10 is a drive system road map showing a modified example of FIG.

[Explanation of symbols]

 (2) Engine (4) Gear transmission case (transmission section) (32) Clutch pedal (38) Continuous belt transmission case (transmission section) (67) Clutch case (power connection section) (87) Clutch rod

Claims (2)

[Claims] 1. An engine, a power connecting / disconnecting portion, and a transmission portion,
A mobile agricultural machine arranged on a substantially central line in the longitudinal direction of the machine body, wherein a power connecting portion is arranged on the side opposite to the engine with the transmission portion interposed. 2. A clutch rod for connecting the clutch pedal and the power connecting / disconnecting portion is arranged so as to sandwich the speed changing portion, and a clutch rod for connecting the clutch pedal and the power connecting / disconnecting portion is extended above the speed changing portion. The mobile agricultural machine according to 1.