JPH06144034A - Mobile farm machinery - Google Patents

Abstract

PURPOSE:To facilitate the simplification of machine body structure and the promotion of lightweightness and the like in protecting a main transmission structure with a main frame by installing the main transmission structure within the lateral width of this main frame being installed extendedly from the front part to the rear part of the machine body. CONSTITUTION:Each front end of main frames 50 and subframes 54 is connected to a gear case 43 and a steering case 44, and each rear end of these main frames 50 and subframes 54 is connected to rear axle case 7, while a tetragonal space is formed by these symmetrically paired main frames 50 and subframes 54. In succession, a main transmission structure 85 equipped with a transmission case 4, an output shaft 67, a front travel driving shaft 68, a set driving shaft 69 or the like is set up within the tetragonal space to be formed by these frames 50 and 54. In consequence, the main transmission structure 85 is protected by these four frames 50, 50, 54, 54, and it is made into a safe structure for an operator, etc. Moreover, those of main frames 50 and subframes 54 are reinforced with one another, through which improvements in the rigidity of a machine body and the promotion of lightweightness are achieved.

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 driving a front wheel and a rear wheel by providing a main transmission structure such as an output shaft for transmitting an engine output between an engine at a front part of a machine body and a rear axle case at a rear part of the machine body.

[0003]

In the above-mentioned prior art, it is necessary to prevent the damage of the main transmission structure or to ensure the safety of the operator by providing a member for protecting the left and right sides or the upper and lower sides of the main transmission structure. There was a structural problem.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides a mobile agricultural machine in which a main transmission structure such as an output shaft for transmitting the engine output is provided between the engine at the front of the machine and the rear axle case at the rear of the machine. The main transmission structure is arranged within the left and right width of the main frame extending from the front part to the rear part, and the main transmission structure can be protected by the main frame, making it easy to simplify and reduce the weight of the airframe structure. Can be achieved.

Further, in a mobile agricultural machine in which a main transmission structure such as an output shaft for transmitting engine output is provided between an engine at the front of the machine and a rear axle case at the rear of the machine, a main frame extending from the front to the rear of the machine. A subframe is provided on the lower side, and the main transmission structure is arranged within the range surrounded by the mainframe and the subframe. The main transmission structure can be protected by the mainframe and the subframe, and the airframe structure is simplified. In addition, the weight can be easily reduced, and the main frame and the sub-frame can reinforce each other to easily improve the rigidity of the machine body.

Further, in a mobile agricultural machine in which a main transmission structure such as an output shaft for transmitting engine output is provided between an engine at the front of the machine and a rear axle case at the rear of the machine, a main frame extending from the front to the rear of the machine. A subframe is provided on the lower side, and the main transmission structure is arranged within the vertical width of the mainframe and the subframe.The main transmission structure can be protected by the mainframe and the subframe, which simplifies the airframe structure. In addition, the weight can be easily reduced, and the main frame and the sub-frame can reinforce each other to easily improve the rigidity of the machine body.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a plan view of a traveling vehicle body, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view thereof. In the figure, (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. Then, while mounting the preliminary seedling mounts (10) on both sides of the bonnet (9) that covers the engine (2) and the like, cover the mission case (4) and the like with the vehicle body cover (12) that forms the step (11), 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 hood (9).

Further, (15) in the figure is a planting section equipped with a seedling table (16) for planting 6 rows, a plurality of planting claws (17), etc. Forward tilting seedling stand (1
6) is supported by the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and 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, (36) is a side fertilizer applicator, and (3)
7) is a chemical spraying machine.

Further, FIG. 1, FIG. 4, FIG. 5, FIG. 6, FIG.
As shown in FIG. 8, the engine (2) is attached to the pair of left and right body frames (3) via a frame (38) and a vibration proof rubber (39).
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 gear case (43), which is a deceleration case, and the rear side of the vehicle body frame (3) is bolted and fixed to the front side of the gear case (43). The steering case is attached to the lower side of the gear case (43). (44) is integrally fixed, and a steering output shaft (45) is provided on the lower surface of the steering case (44) so as to fix the middle of the steering arm (46) in plan view to the output shaft (45). The steering rod (4) is attached to the knuckle arm (47) of (6).
8) via the L-shaped one end side of the steering arm (46), while connecting the hydraulic steering cylinder (49) which is a power steering actuator to the other end side of the L-shaped steering arm (46). ing.

Further, as shown in FIG. 6, each case (4
3) (44) A pair of left and right main frames (5
0) (50) The front end brackets (51) (51) are bolted and fixed, and the step (1) of the vehicle body cover (12) is fixed.
The cover frames (52) and (53) supporting the 1) part are welded and fixed to the upper surface of the front part of the main frame (50), and
The front ends of the pair of left and right subframes (54) are fixed by bolts on both sides of the rear part of the steering case (44), and the mainframe (50) and the subframe (54) are extended substantially parallel to each other in a side view. The front axle case (5) is swingably attached to the bearing body (55) on the lower surface of the front part and the rear part of the steering case (44), and the both sides of the axle case (5) are left and right between the frames (50) and (54). Left and right front wheels (6) and (6) are mounted so as to project.

Further, as shown in FIG. 7, the rear end portions of the respective frames (50) (54) are bolted and fixed to the bracket (56) of the rear axle case (7), and the mission of the front portion of the case (7) is fixed. The case (4) is fixed to the bracket (57) of the main frame (50), the frames (50) and (54) are connected to each other by the pipe (58) on the front side of the mission case (4), and the links (25) are also provided.
A gate-shaped support post (59) provided with (26) is erected on the rear part of the main frame (50), and a pair of left and right upper frames (60) (6) are provided between the front part of the main frame (50) and the support post (59).
0) is obliquely installed, and the lifting cylinder (28) is attached to the middle part of the upper frame (60).

Further, as shown in FIGS. 4 and 5, a belt continuously variable transmission mechanism (64) having output / input pulleys (61) (62) and a belt (63) is provided, and an output shaft (65) of the engine (2) is provided. ) Is connected to the input shaft (66) of the gear case (43) via the continuously variable transmission mechanism (64), and the transmission case (4) is connected to the gear case (43) via the output shaft (67). , The front axle case (5) is connected to the transmission case (4) through the front drive shaft (68) which is an output shaft, and the planted drive shaft (69) is connected.
Planted case (20) to mission case (4) via
The engine (2) output is decelerated and transmitted to the transmission case (4) via the continuously variable transmission mechanism (64) and the gear case (43), and the main transmission lever (29) of the transmission case (4) is connected. Is configured to be transmitted to the front and rear wheels (6) and (8) via 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 rod (76) and 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, as shown in FIGS. 9 and 10, the main clutch case (81) is attached to the fixed pulley side of the input pulley (62), and the main clutch pedal (32) connects and disconnects via the rod (82). A main clutch (not shown) to be operated is provided in the main clutch case (81), and the input pulley (62) is connected to the input shaft (6) through the case (81).
6) and a reduction gear (83) provided with a reduction gear (83)
The input shaft (66) is connected to the output shaft (67) via 4).

Further, as shown in FIGS. 1, 6, 7 and 8, the front ends of the main frame (50) and the sub frame (54) are attached to the gear case (43) and the steering case (44) which are integrally fixed. The rear ends of the main frame (50) and the sub frame (54) are connected to the rear axle case (7), and the left and right main frames (50) (50) and the left and right sub frames (54) are connected.
(54) forms a quadrangular space, and a main transmission structure (85) including the mission case (4), the output shaft (67), the front drive shaft (68), the planted drive shaft (69), and the like. It is arranged in a rectangular space formed by the frames (50) and (54), and between the engine (2) at the front of the machine and the rear axle case (7) at the rear of the machine,
In a mobile agricultural machine provided with a main transmission structure (85) such as an output shaft (67) for transmitting an output of an engine (2), the main transmission is provided within a left and right width of a main frame (50) extending from a front part to a rear part of a machine body. The structure (85) is arranged, and the main transmission structure (85) is arranged within the vertical width of the main frame (50) and the sub frame (54). The main transmission structure (85) is arranged in a surrounding area (rectangular space), and the main transmission structure (85) is provided in each of four frames (50) (50).
(54) A structure that is protected by (54) and safe for workers, etc., and the main frame (50) and the sub-frame (54) are reinforced with each other to improve the rigidity and reduce the weight of the machine body. Is configured as follows.

[0017]

As is apparent from the embodiments described above, the present invention provides an output shaft (67) for transmitting the output of the engine (2) between the engine (2) at the front of the machine and the rear axle case (7) at the rear of the machine. ) (68) and the like, in a mobile agricultural machine provided with a main transmission structure (85), the main transmission structure (85) is arranged within the left and right width of the main frame (50) extending from the front part to the rear part of the machine body. Mainframe (5
0) can protect the main transmission structure (85) and can easily achieve simplification and weight reduction of the airframe structure.

The engine (2) is provided between the engine (2) at the front of the machine and the rear axle case (7) at the rear of the machine.
In a mobile agricultural machine provided with a main transmission structure (85) such as output shafts (67) (68) for transmitting output, a subframe (54) is provided below a mainframe (50) extending from a front part to a rear part of the machine body. The main transmission structure (85) is provided within a range surrounded by the main frame (50) and the sub frame (54).
And the main transmission structure (8) by the sub-frame (54).
5) can be protected, the structure of the airframe can be simplified and the weight can be easily reduced, and the main frame (50) and the subframe (54) can reinforce each other to easily improve the rigidity of the airframe. It is possible.

Further, between the engine (2) at the front of the fuselage and the rear axle case (7) at the rear of the fuselage, the engine (2)
In a mobile agricultural machine provided with a main transmission structure (85) such as output shafts (67) (68) for transmitting output, a subframe (54) is provided below a mainframe (50) extending from a front part to a rear part of the machine body. The main transmission structure (8) is provided in the vertical width of the main frame (50) and the sub frame (54).
5) is arranged, and the main transmission structure (85) is composed of a main frame (50) and a sub-frame (54).
That can protect the vehicle body, can easily achieve simplification and weight reduction of the airframe structure, and can easily improve the rigidity of the airframe by reinforcing each other by the main frame (50) and the subframe (54). Is.

[Brief description of drawings]

FIG. 1 is a plan view of a traveling vehicle body.

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 side view of a belt continuously variable transmission mechanism.

FIG. 6 is a side view of the front part of the traveling vehicle body.

FIG. 7 is a side view of the rear part of the traveling vehicle body.

FIG. 8 is a plan view of FIG.

FIG. 9 is a side view of the reduction gear case portion.

FIG. 10 is a plan view of the same.

[Explanation of symbols]

 (2) Engine (7) Rear axle case (50) Main frame (54) Sub frame (67) Output shaft (68) Front drive shaft (output shaft) (85) Main transmission structure

Claims (3)

[Claims] 1. In a mobile agricultural machine in which a main transmission structure such as an output shaft for transmitting engine output is provided between an engine at the front of the machine and a rear axle case at the rear of the machine, a main frame extending from the front to the rear of the machine. A mobile agricultural machine in which the main transmission structure is arranged within the left and right width of the. 2. In a mobile agricultural machine in which a main transmission structure such as an output shaft for transmitting engine output is provided between an engine at the front of the machine and a rear axle case at the rear of the machine, a main frame extending from the front to the rear of the machine. A mobile agricultural machine, wherein a subframe is provided on the lower side, and the main transmission structure is arranged within a range surrounded by the mainframe and the subframe. 3. In a mobile agricultural machine in which a main transmission structure such as an output shaft for transmitting engine output is provided between an engine at the front of the machine and a rear axle case at the rear of the machine, a main frame extending from the front to the rear of the machine. A mobile agricultural machine characterized in that a sub-frame is provided on the lower side, and the main transmission structure is disposed within the vertical width of the main frame and the sub-frame.