JP3270973B2 - Moving agricultural machine - Google Patents

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 for continuously carrying out seedling planting operation, for example, having a seedling table and planting claws.

[0002]

Conventionally, Japanese Utility Model Laid-Open No. 63-6
As shown in Japanese Unexamined Patent Publication No.
Technology that mounts an engine and provides a muffler on the side of the engine
However, the muffler is fixed to the engine via a bracket.
The muffler away from the engine.
Mud in the field scattered between the engine and muffler
Accumulate or remove the muffler and maintain the engine
There is a problem such as the need to perform Also the engine
By installing a muffler on the body frame on which the
The muffler away from the engine,
Low vibration that supports the engine with anti-vibration rubber
In the dynamic structure, the exhaust pipe between the engine and the muffler
It is necessary to connect with a vibration-proof structure. Also, engine
A high-rigidity muffler stay is fixed to the
When attaching, it is necessary to process the muffler stay with high precision
To simplify the installation work of the muffler.
There is a problem that it cannot be obtained .

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention provides an airframe
Mount the engine on the front body frame and
For mobile agricultural machines that have mufflers,
Engine stand on the body frame in front of the
Attach and fix the engine to the engine stand,
Extend the muffler stay fixed to the engine stand to one side
And install the muffler.
Engine exhaust pipe and muffler
To fix the inlet pipe of the car
Airframe configuration that allows the rear side of the frame to be cantilevered to the front wheel side
The low vibration structure supports the engine via the engine stand
More than the conventional bracket structure with a muffler
Muffler stay is installed with high rigidity via engine mount
The engine and muffler to ensure the required clearance, etc.
Engine maintenance is easy and the muffler
There is a stay processing error or engine mounting error
Can properly connect the pipe between the engine and the muffler,
It is possible to easily improve the processing assemblability and the durability.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a rear view of an engine unit, 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 mounted on a vehicle body. It is mounted on a frame (3), and a front paddle traveling wheel (6) is supported in front of a transmission case (4) via a front axle case (5), and a rear axle case (7) is provided at the rear of the transmission case (4). The rear axle case (7) supports the paddy field traveling rear wheel (8). A spare seedling mount (10) is mounted on both sides of the hood (9) covering the engine (2) and the like, and the transmission case (4) is mounted by a body cover (12) on which an operator rides through a step (11). A driver's seat (13) is mounted above the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) and behind the hood (9).

[0005] In the figure, reference numeral (15) denotes a planting section provided with a seedling table (16) for planting six rows and a plurality of planting claws (17). Forward tilting seedling platform (1
6) is supported on a planting case (20) via a lower rail (18) and a guide rail (19) so as to be reciprocally slidable right and left, and a rotary case (21) is rotated at a constant speed in one direction. A pair of claw cases (22) and (22) are supported at the case (20) and symmetrically positioned around the rotation axis of the case (21), and the claw case (22) is provided.
(22) Attach the planting claws (17) and (17) to the tip. A supporting 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. Lifting cylinder (28) for connecting the support frame (24) to the rear side of the traveling vehicle (1) and raising and lowering the planting section (15) via the link mechanism (27)
To the lower link (26), and the front and rear wheels (6)
(8) is driven to move and at the same time, a seedling for one plant is planted from the seedling mounting table (16) which is reciprocally slid left and right.
7), the seedlings are continuously planted.

In the figure, (29) is a main shift lever, (3)
0) is a sub-shift lever for planting elevating and working travel shifting, and (3)
1) is a planting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals, (3)
4) is a center float for two-row equalization, (35) is a side float for two-row equalization, and (36) is a side fertilizer.

Further, FIGS. 4, 5, 6, 7, 8 and
As shown in FIG. 9, the engine (2) is mounted on a pair of left and right body frames (3) and (3) via an engine stand (38) having a muffler stay (37) and vibration isolating rubber (39). The steering of the steering handle (14) for fixing the middle of the seedling stand frame (40) for attaching the spare seedling mounting table (10) on both sides to the upper surface of the vehicle body frame (3) and inserting it into the cylinder (41). The shaft (42) is erected on the upper surface of the reduction case (43), and the rear of the vehicle body frame (3) is fixed to the front side of the reduction case (43) by bolts. The steering case ( 44) and the steering case (44)
A steering output shaft (45) protrudes from the lower surface, the middle of an L-shaped steering arm (46) in a plan view is fixed to the output shaft (45), and a steering rod is attached to a knuckle arm (47) of the front wheel (6). The L-shaped one end of the steering arm (46) is connected via (48), while the hydraulic steering cylinder (49) is connected to the L-shaped other end of the steering arm (46).

As shown in FIGS. 7 and 9, a pair of left and right main frames (50), (50) and front brackets (51), (51) are provided on both sides of a rear portion of each of the cases (43), (44).
And the cover frames (52) and (53) supporting the foot portion of the body cover (12) are fixed to the front upper surface of the main frame (50) by welding. The main frame (50) and the sub-frame (54) are extended substantially parallel to each other in a side view, and the bearing (5) on the front lower surface of the main frame (50) is
The front axle case (5) is swingably attached to the rear part of the steering case (44), and the left and right front wheels (6) are protruded from both sides of the axle case (5) from between the frames (50) and (54). ) (6) is installed.

As shown in FIGS. 5 and 8, the rear end of each of the frames (50) and (54) is bolted and fixed to a bracket (56) of a rear axle case (7). Part of the transmission case (4) is fixed to the bracket (57) of the main frame (50), and each frame (50) (54) is located in front of the transmission case (4).
The steps are connected by a step frame (58), and a column-shaped support (59) provided with each link (25) (26) is erected at the rear of the main frame (50).
0) A pair of left and right upper frames (60) and (60) are obliquely provided between the front portion and the column (59), and a lifting cylinder (28) is attached to an intermediate portion of the upper frame (60). 5) In a mobile agricultural machine having a main frame (50) for supporting (7), the main frame (5) is provided below the main frame (50).
0) a sub-frame (54) is provided substantially parallel to the side view, and a step (11) is provided with a step (11). And connect the other end of the step frame (58) to the cover frame (5).
3).

As shown in FIGS. 5 and 6, a belt continuously variable transmission mechanism (64) having input / output pulleys (61) and (62) and a belt (63) is provided, and an output shaft (65) of the engine (2) is provided. ), The input shaft (66) of the reduction case (43) is connected via the continuously variable transmission mechanism (64), and the transmission case (4) is connected to the reduction case (43) via the output shaft (67). The front axle case (5) is connected to the transmission case (4) via the front running drive shaft (68), and the planting case (20) is connected to the transmission case (4) via the planting drive shaft (69). ), And the continuously variable transmission mechanism (64) and the speed reduction case (43)
The engine (2) output through the transmission case (4)
And the multi-speed transmission output by the main transmission lever (29) of the transmission case (4) is transmitted to the front and rear wheels (6).
(8) is transmitted through each axle case (5) (7).

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

Further, as shown in FIGS. 9, 10, and 11, a left and right body frame is formed by a front guard frame (81) and a front bumper (82) which support the front step portion of the body cover (12) and have a U-shaped front view. (3) (3) The front portion is connected, and an additional weight (83) is detachably attached to the front bumper (82) so that the weight (83) is arranged at the forefront of the fuselage. A muffler (84) is arranged on the lower left side of the step section.
2) A battery (85) is disposed on the lower right side of the front step portion, and the battery stand (86) on which the battery (85) is mounted is connected to the seedling stand frame (40) and the guard frame (8).
The muffler stay (37) is attached by extending the muffler stay (37) to the left side of the engine (2), and the muffler (84) and the battery (85) are arranged on both sides of the engine (2). The two ends of the front guard frame (81) are connected by a horizontal guard frame (87) to form a square frame in a front view, while the cover frame (5) is formed.
4) Left and right side guard frames (88) and (88) are connected between both ends and both ends of the front guard frame (81),
Front and horizontal and left and right side guard frames (81) (8)
7) With the loop-shaped frame structure formed by (88) and (88), the continuously variable transmission mechanism (64) and the engine (2) peripheral devices such as the muffler (84) and the battery (85) and the front side of the engine (2) and It is configured to surround both left and right sides.

As shown in FIGS. 1 and 12, a muffler stay (37) integrally fixed to the engine stand (38) is extended substantially horizontally to the left side of the engine (2), and a bolt ( 89) Attach the bolt (9) to the lower surface of the engine (2) to be
0) The lower surface of the muffler (84) to be stopped and fixed is mounted at substantially the same height, and the exhaust pipe (9) of the engine (2) is mounted.
1) The inlet pipe (92) of the muffler (84) is fixedly fastened by a bolt (93), and a vertically long hole is formed in a flange portion of the inlet pipe (92) into which the bolt (93) is inserted. The bolt (93) is screwed so that the connection error between the (38) and the muffler stay (37) is absorbed by the elongated hole.
(92) while preventing the muffler (8
4) Muffler (8)
The outlet pipe (94) of 4) is extended spirally.

As is clear from the above, the vehicle body on the front side of the fuselage
The engine (2) is mounted on the frame (3)
(2) Mobile farming machine with muffler (84) on the side
And the body frame in front of the front wheel (6) mounting part
(3) Engine stand (38) via anti-vibration rubber (39)
And fix the engine (2) to the engine stand (38)
And fixed to the engine stand (38).
Extend the muffler (8) by extending the frust stay (37) to one side.
4) Attach the engine stand (38) and muffler stay
Exhaust of the engine (2) so as to absorb the connection error of (37)
Pipe (91) and muffler (84) inlet pipe (9
2) Fix the bolt (93). And the body
The rear side of the frame (3) is cantilevered to the front wheel (6).
Airframe configuration, low vibration structure via engine stand (38)
The engine (2) is supported and a muffler (84) is installed.
Stiffer than conventional bracket structure
A muffler stay (37) is installed via (38),
It is necessary to secure the distance between the engine (2) and the muffler (84).
Maintenance of the engine (2)
Processing error or engine of muffler stay (37)
Even if there is a mounting error in (2), the engine (2) and the muffler
-Properly connect pipes (91) and (92) between
In addition, it aims to improve workability and assemblability and durability.

Also, as shown in FIG. 12, the lower surface of the weight (83) is formed in a downwardly concave shape, and the front bumper (8) is formed.
The concave lower surface of the weight (83) is fitted to the convex upper surface side of 2) to prevent the weight (83) from moving back and forth by the concave and convex engagement, and the weight (83) is bolted to the front bumper (82). 95) Stop and fix, and the weight (8
3) is divided into right and left parts.
3) is positioned at the forefront of the fuselage. Even if the weight (83) collides with a ridge or the like, the unevenness prevents the weight (83) from being displaced and prevents an abnormal force from acting on the bolt (95). , Weight (83) serves as a bumper.

[0016]

As apparent from the above embodiment the present invention is the engine (2) to the machine body front side of the body frame (3)
Mounted and provided muffler (84) beside engine (2)
Mobile agricultural machine, the front of the front wheel (6) mounting part
The engine is attached to the body frame (3) via the vibration-isolating rubber (39).
Attach the engine stand (38) and attach the engine to the engine stand (38).
(2) is fixed and attached to the engine stand (38).
Extend the muffler stay (37) to be fixed to one side
Attach muffler (84), engine stand (38) and muffler
The engine that can absorb the connection error of the larstay (37)
(2) Exhaust pipe (91) and muffler (84) entrance
Fixing pipe (92) with bolt (93)
Then, the rear side of the body frame (3) is cantilevered toward the front wheel (6).
With the body structure to be supported, the engine stand (3
8) can support the engine (2) via
Higher rigidity than conventional bracket structure with (84)
Muffler stay (37) via engine stand (38)
Can be installed, the distance between engine (2) and muffler (84)
The maintenance of the engine (2) is possible by securing the law.
It can be easily performed and the muffler stay (37)
Even if there is a processing error or mounting error of the engine (2)
Pipe (91) between engine (2) and muffler (84)
(92) Proper connection can be achieved, improving processing and assembly
It is possible to easily improve the top and the durability.

[Brief description of the drawings]

FIG. 1 is a rear view of an engine unit.

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

FIG. 3 is a plan view of the same.

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

FIG. 5 is a plan view of the same.

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

FIG. 7 is a side view of a front portion of a traveling vehicle body.

FIG. 8 is a side view of a rear portion of the traveling vehicle body.

FIG. 9 is a plan view of a front portion of a traveling vehicle body.

FIG. 10 is a side view of the engine unit.

FIG. 11 is an explanatory plan view of the same.

FIG. 12 is a side view of a weight portion.

[Explanation of symbols]

(2) Engine (3) Body frame (6) Front wheel (37) Muffler stay (38) Engine stand (39) Anti-vibration rubber (84) Muffler (91) Exhaust pipe (92) Inlet pipe (93) Bolt

Claims (1)

(57) [Claims] An engine is mounted on a body frame (3) on the front side of the fuselage.
With a muffler (8) beside the engine (2).
In the mobile agricultural machine provided with 4), the front wheel (6)
The rubber frame (39) is attached to the body frame (3) in front of the
And mount the engine stand (38).
The engine (2) is fixed to the
Muffler stay (37) to be fixed to (38) on one side
The muffler (84) was installed by extending the engine stand (3).
8) Connection error between muffler stay (37) can be absorbed
Exhaust pipe (91) and muffler (8) for engine (2)
4) Secure the inlet pipe (92) with bolts (93).
A mobile agricultural machine characterized by having