JPH06286486A - Moving agricultural machinery - Google Patents

Abstract

PURPOSE:To connect and disconnect a reduction case and a car body frame easily under the condition that an input pulley is fitted to the reduction case. CONSTITUTION:A reduction case 43 for transmitting the output of an engine 2 is fitted to a car body frame 3, to which the engine 2 is fitted, and a fitting part 85 of the car body frame 3 and the reduction case 43 is arranged in the reduction case 43 except for a fitting range of an input pulley 62 with a view from the side.

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, there has been a technique for transmitting engine output to a deceleration case via a belt continuously variable transmission mechanism.

[0003]

In the prior art, since the mounting bolts for fixing the vehicle body frame and the speed reduction case are provided within the input pulley mounting range of the speed reduction case, it is possible to remove the input pulley in the speed reduction case. There has been a problem that the deceleration case for attaching / detaching the mounting bolt cannot be easily assembled or the maintenance work cannot be performed.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a deceleration case for transmitting an engine output is attached to a body frame to which an engine is attached, and the deceleration case is attached to the body frame outside the input pulley attachment range of the deceleration case in a side view. With the case mounting portion arranged, the mounting portions of the vehicle body frame and the reduction gear case can be easily attached and detached even when the input pulley is attached to the reduction gear case. It is possible to easily improve the sex.

Further, a belt continuously variable transmission mechanism is mounted between the engine and a rear deceleration case, and an engine base on which the engine is mounted and a vehicle body frame on which the deceleration case is mounted are connected by a vibration isolator that absorbs vertical vibrations. By so doing, the belt tension of the continuously variable transmission mechanism can be stably maintained above a predetermined level, and transmission of engine vibration to the vehicle body frame can be prevented.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a side view of an engine part, FIG. 2 is a side view of a riding rice transplanter, and FIG. 3 is a plan view of the same. In FIG. 1, (1) is a traveling vehicle on which an operator rides, and an engine (2) is a vehicle body. The front wheel (6) for traveling paddy fields is mounted on the frame (3) via the front axle case (5) in front of the mission case (4), and the rear axle case (7) is provided at the rear of the mission case (4). 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 hood (9) that covers the engine (2) and the like, and the mission case (4) is provided 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 portion 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 hood (9).

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. A support frame (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a three-point link mechanism (27) including a top link (25) and a lower link (26) is provided. Elevating cylinder (28) for connecting a supporting frame (24) to the rear side of the traveling vehicle (1) and moving up and down the planting part (15) through the link mechanism (27).
Is connected to the lower link (26), and the front and rear wheels (6) are connected.
(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 leveling two lines, (35) is a side float for leveling two lines, and (36) is a side fertilizer applicator.

Further, as shown in FIGS. 1, 4, 5, 6 and 7, an engine base (38) having a muffler stay (37) and a vibration isolating rubber (39) ... The engine (2) to the left and right body frame (3)
The seedling stand frame (40) is mounted on (3) and the preliminary seedling stand (10) is attached to both sides. The middle of the seedling stand frame (40) is welded and fixed to the upper surface of the vehicle body frame (3) and inserted into the tubular body (41). Steering shaft (4) of steering handle (14)
2) is erected on the upper surface of the deceleration case (43), and the rear side of the vehicle body frame (3) is fixed to the front side of the deceleration case (43). The steering case (44) is integrated on the lower surface side of the deceleration case (43). Fix the steering case (4
4) A steering output shaft (45) is provided on the lower surface so that the middle of the steering arm (46) in plan view is the output shaft (4).
5) fixed to the front wheel (6) knuckle arm (47)
L of the steering arm (46) via the steering rod (48)
Hydraulic steering cylinder (49) while connecting one end side
Is connected to the other end of the L-shaped steering arm (46).

Further, a pair of left and right main frames (50) (50) front end brackets (51) (51) are fixed by bolts on both sides of the rear part of each case (43) (44),
The cover frames (52) (53) that support the foot of the vehicle body cover (12) are welded and fixed to the upper front surface of the main frame (50), and a pair of left and right sub frames (54) are provided on both sides of the rear portion of the steering case (44). The front end is bolted and fixed, and the main frame (50) and the sub frame (54) are extended substantially in parallel in a side view, and the bearing body (55) on the lower surface of the front portion of the main frame (50) and the rear portion of the steering case (44). The front axle case (5) is swingably attached to and, and the left and right front wheels (6) and (6) are installed by protruding both sides of the axle case (5) left and right from between the frames (50) and (54). There is.

The rear end of each frame (50) (54) is attached to the bracket (56) of the rear axle case (7).
The transmission case (4) at the front of the case (7) is fixed to the bracket (57) of the main frame (50) between the frames (50) and (54) on the front side of the transmission case (4). Step frame (5
8) A gate-shaped support post (59) for connecting each link (25) (26) is erected on the rear part of the main frame (50) so as to be connected between the front part of the frame (50) and the support post (59). A pair of upper frames (60) (60) are installed obliquely, and an elevating cylinder (2) is installed in the middle of the upper frame (60).
8) The mobile agricultural machine equipped with the main frame (50) for supporting the front and rear axle cases (5) and (7) for attaching the front and rear axle cases (5) and (7), the side view of the main frame (50) below the main frame (50). The sub-frame (54) is provided substantially parallel to the step (11).
By connecting one end side of the step frame (58) provided with the main frame (50) and the intermediate portion of the front and rear width of the sub frame (54), the other end side of the step frame (58) is connected to the cover frame (53). There is.

Further, a belt continuously variable transmission mechanism (64) having input / output pulleys (61) (62) and a belt (63).
And an input shaft (66) of the deceleration case (43) on the output shaft (65) of the engine (2).
The transmission case (4) via the output shaft (67) to the deceleration case (43) and the front axle case to the transmission case (4) via the front drive shaft (68). (5) is connected, and the planting case (20) is linked to the mission case (4) via the planting drive shaft (69). The transmission case (4) and the deceleration case (43) are used. The engine (2) output to the transmission case (4) by deceleration transmission and the main transmission lever (2) of the transmission case (4).
The multi-stage shift output by 9) is transmitted to the front and rear wheels (6) and (8) through the axle cases (5) and (7).

A tension roller (70) for tensioning the belt (63) and pulleys (61) (62).
The input / output cams (71) and (72) for changing the winding diameter of the belt (63), the connecting rod (73) for interlockingly connecting the cams (71) and (72), and the connecting rod (73) are connected. A potentiometer (74) for detecting the amount of displacement of the cams (71) (72) and a speed change link (76) for rotatably supporting the main frame (50) via a shaft (75),
One end of the link (76) is connected to the connecting rod (73) by a speed change rod (77), while the other end of the link (76) is connected to a telescopic output shaft (79) of a speed change motor (78).
The motor (78) is attached to the bracket (80) of the main frame (50), and the output / input cams (71) (72) are connected via the link (76) or the like by the forward / reverse control of the motor (61). Rotate the I / O pulley (6
1) (62) The width of the belt (63) is changed by changing the width, and the pulleys (61) (62) and the belt (6) are changed.
The gear ratio of 3) is configured to be continuously changed.

Further, a front guard frame (8) of U-shape in front view supporting the front step portion of the vehicle body cover (12) is provided.
1) and the front bumper (82) connect the front parts of the left and right vehicle body frames (3) and (3), and an additional weight (83) is detachably attached to the front bumper (82).
3) is placed in the forefront of the fuselage, and the body cover (12)
A muffler (84) is arranged on the lower left side of the front step part, the muffler (84) is attached to the muffler stay (37), and the rear parts of the left and right body frames (3) (3) are attached to both sides of the deceleration case (43). A speed reduction case (4) is provided with a reinforcing plate (86) fixed by mounting bolts (85) and welded between the rear parts of the left and right vehicle body frames (3) and (3).
3) It is fixed to the front by mounting bolts (87) (87). A deceleration case (43) for transmitting the output of the engine (2) is attached to a body frame (3) to which the engine (2) is attached, and a side view. Deceleration case (4
An input pulley (62) provided with a clutch case (88) by disposing a mounting bolt (85), which is a mounting portion of the vehicle body frame (3) and the deceleration case (43), outside the input pulley (62) mounting range of 3). ) Is attached to the deceleration case (43), the mounting bolt (85) on the inside of the machine can be attached to and detached from the outside of the input pulley (62).

Further, as shown in FIGS. 1, 7 and 8, bolts (89) are erected substantially vertically on the horizontal plane of the body frame (3), and the bolts (8) are attached to the upper surface of the body frame (3).
9) and the nut (90), the core shaft (91) is fixed, and the engine base (38) is bolted (92).
The fitting (93) is fixed through the outer peripheral surface (94) of the core shaft (91) and the outer peripheral surface (94).
And a substantially conical space (96) between the mounting bracket (93) and the inner hole (95) of the mounting bracket (93), and the conical truncated vibration isolating rubber (39) having a donut-shaped hollow is attached to the core shaft ( The outer peripheral surface (94) of (91) and the inner hole (95) of the mounting bracket (93) are integrally fixed by baking to reduce the spring constant of the vibration isolator (39) in the vertical (up and down) direction. , Increase the spring constant of the anti-vibration rubber (39) in the horizontal direction,
For example, the vibration damping rubber (3
9) is largely deformed to prevent the vibration of the engine (2) from being transmitted to the vehicle body frame (3), while the amount of deformation of the antivibration rubber (39) due to the tension change of the belt (63) is reduced, The transmission torque change of the continuously variable transmission mechanism (64) due to the deformation of the anti-vibration rubber (39) is reduced, and the belt continuously variable transmission mechanism (64) is provided between the engine (2) and the rear deceleration case (43). The engine base (38) on which the engine (2) is mounted and the deceleration case (4)
The body frame (3) to which 3) is attached is connected by a vibration isolator (39) which is a vibration isolator that absorbs vertical vibrations, and the vibration of the engine (2) is absorbed by deformation of the vibration isolator (39). The belt (63) is prevented from slipping or undulating due to the deformation of the anti-vibration rubber (39).

[0016]

As is apparent from the above-described embodiments, the present invention provides a vehicle body frame (3) to which the engine (2) is mounted,
The deceleration case (43) for transmitting the output of the engine (2) is mounted, and the mounting portion of the vehicle body frame (3) and the deceleration case (43) is outside the mounting range of the input pulley (62) of the deceleration case (43) in a side view. (85) is arranged so that the mounting portion (85) of the vehicle body frame (3) and the deceleration case (43) can be easily attached and detached even when the input pulley (62) is attached to the deceleration case (43). Therefore, the assembling property and the maintainability of the vehicle body frame (3) and the deceleration case (43) can be easily improved.

Further, the belt continuously variable transmission mechanism (64) is mounted between the engine (2) and the rear deceleration case (43), and the engine base (38) on which the engine (2) is mounted.
And the body frame (3) for mounting the deceleration case (43)
Are connected by a vibration isolator (39) that absorbs vibrations in the vertical direction. The belt (63) tension of the continuously variable transmission mechanism (64) can be stably maintained above a predetermined level, and the vibration of the engine (2) can be maintained. Can be prevented from being transmitted to the vehicle body frame (3).

[Brief description of drawings]

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

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

FIG. 3 is a plan view of the same.

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

FIG. 5 is a plan view of the same.

FIG. 6 is a side view of a belt continuously variable transmission mechanism.

FIG. 7 is a plan view of FIG.

FIG. 8 is a side view of the anti-vibration rubber portion.

[Explanation of symbols]

 (2) Engine (3) Body frame (38) Engine base (39) Anti-vibration rubber (vibration isolator) (43) Deceleration case (62) Input pulley (64) Belt continuously variable transmission mechanism (85) Mounting bolt (mounting) Part)

Claims (2)

[Claims] 1. A deceleration case for transmitting engine output is attached to a body frame to which the engine is attached, and
A mobile agricultural machine characterized in that the body frame and the attachment portion of the reduction gear case are arranged outside the range of attachment of the input pulley of the reduction gear case in a side view. 2. A belt continuously variable transmission mechanism is mounted between the engine and a rear deceleration case, and an engine base on which the engine is mounted and a vehicle body frame to which the deceleration case is mounted are provided.
A mobile agricultural machine characterized by being connected by a vibration isolator that absorbs vertical vibrations.