JP3163431B2 - 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]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 3-266723, there is a technique in which an engine, a transmission case, and the like are arranged on a frame constituting a vehicle body.

[0003]

In the above prior art, an engine is provided in the middle of the main frame, and front and rear wheels are provided at both ends of the main frame. Therefore, by mounting a working machine such as a planting portion behind the vehicle body. In addition, the front-rear balance of the vehicle body cannot be easily and properly maintained, and the vehicle body is pitched due to a change in the rolling reaction force during running acceleration or a change in the hardness of the field, and the work is likely to be performed in an unstable manner. In addition, since the transmission shaft of the engine output is inserted into the main frame, it is not easy to simplify the processing of the main frame or the assembly and disassembly of the transmission shaft. Also, since a single-shaped body cover is provided on the upper side of the main frame to form the steps, even when repairing only the front or rear part of the body, it is necessary to remove the body cover and open the entire upper surface of the main frame. In addition, labor saving such as maintenance or repair cannot be easily performed, and there is a problem that it is not easy to improve agricultural workability, simplify the vehicle body structure, and improve handleability.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a mobile agricultural machine for connecting and fixing a gear case for transmitting an engine output to the front side of a left and right main frame, wherein a rear side of a body frame on which an engine is mounted is connected and fixed to the gear case. causes integrally continuously provided via a gear case of the vehicle body frame to the left and right main frames, the step of providing the left and right main frame top side divided form before the step and the rear step in the gear case above, under the right and left main frame
The left and right sub-frames are provided substantially parallel to
Left and right sub-frames via the gear case
The engine can be installed by connecting the body frame in front of the left and right main frames, also serving as the gear case that transmits the engine output, and the front and rear balance of the body is good even if the work machine is installed behind The pitching operation of the vehicle body can be easily reduced by maintaining the front and rear steps, and the front and rear steps can be separately attached and detached to perform maintenance and repair of only the front or rear parts. It is easy to improve agricultural workability, simplify the body structure and improve handling , and also change the vertical bending.
The strength of the left and right main frames against the
Can be easily augmented by the frame and only with the mainframe
Left and right main frame compared to conventional structure to secure required strength
The manufacturing cost can be reduced by reducing the cross-sectional dimensions of the
The gear case can be easily reduced
And left and right mainframe and left and right subframe connection strength
Both are obtained shall not be readily improved by mutual reinforcing action.

Further, a gear case for transmitting the engine output is provided.
In a mobile agricultural machine that is connected and fixed to the front side of the left and right main frames, the rear side of the body frame on which the engine is mounted is connected and fixed to the gear case, and the body frame is integrally connected to the left and right main frames via the gear case to transmit the engine output. The shaft is disposed between the left and right main frames, and the step of providing the shaft on the upper surface of the left and right main frames is divided into a front step and a rear step above the gear case, and is substantially parallel to the lower side of the left and right main frames in a side view.
Left and right sub-frames are provided on the left and right main frames.
Connect the left and right subframes via the gear case,
Which was provided with the transmission shaft over between sub-frames, by continuously provided a vehicle body frame to the left and right main off <br/> frame forward shared with gear case for transmitting the engine output established the engine obtained, working backwards also be So設the machine and maintaining a good longitudinal balance of the vehicle body with readily reduce vehicle body pitching operation, since providing the transmission shaft between the left and right main frames, interpolation the transmission shaft to the main frame The transmission shaft can be easily protected by the left and right main frames without causing the left and right main frames to be processed or the transmission shaft can be easily assembled and disassembled. Steps can be separately attached and detached to perform maintenance and repair of the front or rear only, making it easy to improve agricultural workability, simplify the body structure and improve handling. Ri obtained, yet to bending deformation load in the vertical direction
The strength of the left and right mainframes to the left and right subframes
Therefore, it can be easily increased, and the necessary strength is required only with the main frame.
Cross-section of the left right main frames compared with the conventional structure to ensure
Smaller dimensions and thinner wall thickness reduce manufacturing costs
The gear case installation strength and the right and left
Match both in-frame and left and right sub-frame connection strengths.
It can be easily improved by mutual reinforcement,
The lower side of the transmission shaft below the frame is a left and right sub-frame
Therefore, it can be easily protected, and the winding of straw grass can be easily prevented.
Obtained a shall.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of the fuselage structure, FIG. 2 is a side view of a riding rice transplanter, and FIG. 3 is a plan view of the same, where (1) is a traveling vehicle on which an operator rides, and an engine (2) is used. It is mounted on a body frame (3), supports a paddy field traveling front wheel (6) 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 a paddy field traveling rear wheel (8). A spare seedling mount (10) is attached to both sides of the hood (9) covering the engine (2) and the like, and the transmission case (4) and the like are covered with a vehicle body cover (12) forming 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).

[0007] In the figure, reference numeral (15) denotes a planting portion provided with a seedling mounting 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 two-floor leveling center float, (35) is a two-floor side float, (36) is a side fertilizer, (3)
7) is a medicine spraying machine.

Further, FIG. 4, FIG. 5, FIG. 6, FIG. 7, FIG.
As shown in FIG. 9, the engine (2) is connected to the pair of left and right body frames (3) via the mount (38) and the vibration isolating rubber (39).
(3), the middle of the seedling stand frame (40) in which the spare seedling rest (10) is attached to both sides is fixed to the upper surface of the vehicle body frame (3) by welding and inserted into the tubular body (41). The steering shaft (4) of the steering handle (14)
2) is erected on the upper surface of a gear case (43) as a reduction case, and the rear of the body frame (3) is fixed by bolting on the front side of the gear case (43). The steering case is mounted on the lower surface side of the gear case (43). The steering wheel (44) is integrally fixed, the steering output shaft (45) is projected from the lower surface of the steering case (44), and the middle of the L-shaped steering arm (46) in plan view is fixed to the output shaft (45). The steering rod (4) is attached to the knuckle arm (47) of (6).
8), the hydraulic steering cylinder (49), which is an actuator for power steering, is connected to the L-shaped other end of the steering arm (46). ing.

In addition, as shown in FIG.
3) (44) Main frame (50), which is a pair of left and right left and right frames on both sides of the rear part.
1) Fix (51) with bolts and secure the body cover (1).
The cover frame (5) supporting the step (11) of step 2)
2) The (53) is welded and fixed to the upper surface of the front of the main frame (50), and the front ends of the pair of left and right sub-frames (54) are fixed to the rear sides of the steering case (44) by bolts. ) And the sub-frame (54) are extended substantially in parallel, and the main frame (5
0) A 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 an axle case (5) is provided between the frames (50) and (54). Left and right front wheels (6) and (6) are provided with both sides protruding.

As shown in FIG. 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). The case (4) is fixed to the bracket (57) of the main frame (50), and the frames (50) and (54) are connected by pipes (58) at the front side of the transmission case (4) and the links (25).
A gate-shaped column (59) on which the (26) is provided is erected at the rear of the main frame (50), and a pair of left and right upper frames (60) (6) is provided between the front of the frame (50) and the column (59).
The lifting cylinder (28) is attached to the middle part of the upper frame (60).

Further, 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. ), An input shaft (66) of a gear case (43) is connected via the continuously variable transmission mechanism (64), and the transmission case (4) is connected to the gear case (43) via an output shaft (67) as a transmission shaft. ), The front axle case (5) is connected to the transmission case (4) via the front running drive shaft (68), and the planting drive shaft (69) is connected.
Planting case (20) to mission case (4) via
The output of the engine (2) is reduced 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 transmitted to the front and rear wheels (6) and (8) via the respective axle cases (5) and (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 rod (76) by forward / reverse 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. 10 and 11, a main clutch case (81) is mounted on the fixed pulley side of the input pulley (62), and is connected and disconnected by a main clutch pedal (32) via a rod (82). An operating main clutch (not shown) is provided in a main clutch case (81), and an input pulley (62) is connected to the input shaft (6) via the case (81).
6) and a reduction shaft (8) provided with a reduction gear (83).
The input shaft (66) is connected to the output shaft (67) via 4).

Further, as apparent from FIG. 1 and the above, a gear case (43), which is a reduction case for transmitting the output of the engine (2) to the transmission case (4), is connected and fixed to the front side of the main frame (50). The rear side of the body frame (3) on which (2) is mounted is connected and fixed to the gear case (43), and the body frame (3) is integrally connected to the main frame (50) via the gear case (43). The step (11) formed by the body cover (12) is divided into a front step (11a) and a rear step (11b) at a position above the gear case (43). (3) Removal of only the front step (11a) side, removal of only the main frame (50) and the rear step (11b) side, etc. Rutotomoni, front bolt (8
5), side fixing bolt (86), upper fixing bolt (8
7), the rear side of the body frame (3) is shifted to the gear case (4).
It is configured to be fixed to the front part, side part, and upper part of 3).

Further, in a mobile agricultural machine in which an output shaft (67), which is a transmission shaft for transmitting the output of the engine (2) from the gear case (43) to the transmission case (4), is installed in the longitudinal direction of the machine, the left and right frames constituting the machine are used. The output shaft (67) is located at substantially the same height as the left and right main frames (50) (50) between certain left and right main frames (50) (50).
The output shaft (67) is protected by the left and right main frames (50) and (50), and a space for mounting an operation lever, a pedal, and their connecting members (not shown) is secured above the main frame (50). As shown in FIG. 12, the front of the transmission case (4) and the bearing (5)
A pair of left and right low frames (88) and (88) are connected and fixed between 5), and the front running drive shaft (68) as a transmission shaft is connected to the left and right low frames (88) and (8).
8), the left and right low frames (88) and (88) are disposed at substantially the same height, and the front running drive shaft (68) is protected by the left and right low frames (88) and (88). .

As is apparent from the above, the engine (2)
The gear case (43) for transmitting output is connected to the left and right main frames.
(50) In a mobile agricultural machine connected and fixed to the front side,
The rear side of the body frame (3) on which the gin (2) is placed
Connected and fixed to the gear case (43),
(3) Connect the gear case (4) to the left and right main frames (50).
3) and the left and right main
Step (11) provided on the upper surface side of the frame (50)
The front step (11a) and the rear step are performed above the case (43).
Left and right main frames.
(50) The left and right sub-frames (5
4), and the gear case is attached to the left and right main frames (50).
Left and right subframes (54) are connected via source (43)
Let it. And a gear case that transmits the engine (2) output
Left and right main frames (50) in front of each other
And the engine (2) with the body frame (3)
Balun, even if a work machine is installed behind
Can reduce the body of pitching grayed operate satisfactorily maintained a scan
At the same time, before step (11a) and after step (11b)
And the steps before and after (11a) (11)
b) Separately attach and detach the parts, and maintain and repair only the front or rear part.
To improve farm workability and simplify the body structure.
Bending deformation in the vertical direction
Left and right main frame (50) strength against load
Augmented by the sub-frame (71), the main frame
Compared to the conventional structure that secures the required strength with only the
To reduce the cross-sectional dimensions of the left and right main frames (50)
The thickness is reduced to reduce the manufacturing cost,
Case (43) mounting strength and left and right main frame (5
0) and the left and right subframes (54)
Improved by mutual reinforcement.

A gear for transmitting the output of the engine (2)
The base (43) is connected to the front of the left and right main frames (50).
The engine (2) is mounted on the mobile agricultural machine to be fixed.
The rear side of the vehicle body frame (3) is the gear case (43).
And the body frame (3)
Arm (50) via a gear case (43).
Output shaft, which is the transmission shaft that transmits the engine (2) output
(67) is disposed between the left and right main frames (50).
And at the top of the left and right main frames (50).
The providing step (11) is performed above the gear case (43).
Step (11a) and subsequent step (11b)
And a substantially flat side view below the left and right main frames (50).
The left and right subframes (54) are provided on the
Arm (50) via the gear case (43).
Sub-frame (54) and the left and right sub-frames (5
4) The output shaft (67) is provided above above. And
Gear case (43) for transmitting engine (2) output
To the left and right main frame (50) in front of the body frame
The engine (2) is installed by connecting (3) continuously, and
Maintains a good balance between the front and rear of the vehicle even when equipped with work equipment
To reduce the pitching motion of the vehicle,
The output shaft (67) is provided between the in-frames (50),
The output shaft (67) is provided inside the left and right main frames (50).
Without being inserted by the left and right main frames (50).
To protect the output shaft (67).
Of the output shaft (67) or the processing of the output shaft (67).
And before (11a) and after (11b)
And the steps before and after (11a) (11)
b) Separately attach and detach the parts, and maintain and repair only the front or rear part.
To improve farm workability and simplify the body structure.
Bending deformation in the vertical direction
Left and right main frame (50) strength against load
Augmented by sub-frame (71), main frame
Compared to the conventional structure that secures the required strength with only the
To reduce the cross-sectional dimensions of the left and right main frames (50)
The thickness is reduced to reduce the manufacturing cost,
Case (43) mounting strength and left and right main frame (5
0) and the left and right subframes (54)
Enhanced by mutual reinforcement, and left and right main frames
(50) The lower surface of the transmission shaft (67) at the lower
Protected by a frame (54) to prevent winding of straw grass etc.
Stop.

FIG. 13 shows a modified example of the traveling drive system.
4) to the gear case (43), from the gear case (43) to the transmission case (4) via the output shaft (67), and from the transmission case (4) to the front via the forward drive shaft (68). It outputs to the axle case (5), outputs from the front axle case (5) to the rear axle case (7) via the rear drive shaft (89), and drives the front and rear wheels (6) and (8). The high torque transmission distance between (2) to the transmission case (4) is made short to reduce the weight and cost, and
It is configured to increase the dimensional accuracy of the high torque transmission structure.

[0020]

As is apparent from the above embodiments, the present invention provides a gear case (43) for transmitting the output of the engine (2).
In a mobile agricultural machine connected and fixed to the front of the left and right main frames (50), the rear side of the body frame (3) on which the engine (2) is mounted is connected and fixed to the gear case (43), and the body frame (3) is connected to the left and right main frames. (50)
And a gear case (43).
The step (11) provided on the upper surface side of the left and right main frames (50) is performed above the gear case (43) in the previous step (1).
1a) and divided form in the rear step (11b), the right and left
Left and right subs in the main frame (50 ) lower side, almost parallel in side view
A frame (54) is provided, and left and right main frames (50)
Right and left sub-frames via the gear case (43)
The engine (2) can be installed by connecting the body frame (3) in front of the left and right main frames (50) and also as a gear case (43) for transmitting the output of the engine (2). In addition, even if a work machine is mounted behind the vehicle, the front-rear balance of the vehicle body can be maintained well and the pitching operation of the vehicle body can be easily reduced, and it is divided into a front step (11a) and a rear step (11b). The front and rear steps (11a) and (11b) can be separately attached and detached to perform maintenance and repair of only the front part or the rear part, thereby facilitating the improvement of agricultural workability, the simplification of the vehicle body structure, and the improvement of handleability. Can be bent in the vertical direction
The strength of the left and right main frames (50) against
Can be easily strengthened by the
Compared to conventional structure that secures the required strength with only the frame (50)
Reduce the cross-sectional dimensions of the left and right main frames (50)
And reduce the manufacturing cost by forming a thinner wall.
In addition, the gear case (43) mounting strength and the left and right main
Frame (50) and left and right subframe (54) connection strength
Can be easily improved by mutual reinforcement
Is a can shall.

In a mobile agricultural machine in which a gear case (43) for transmitting the output of the engine (2) is fixedly connected to the front side of the left and right main frames (50), the rear side of the body frame (3) on which the engine (2) is mounted is the gear case. (43)
And the vehicle body frame (3) is integrally connected to the left and right main frames (50) via the gear case (43), and the transmission shaft (67) for transmitting the output of the engine (2) is connected to the left and right.
Of causes arranged between the main frame (50), the right and left main frames (50) comprising: providing on the upper surface side (11) of the gear case (43) in the upper front step (11
a) a split formed in the rear step (11b), the right and left main
The left and right sub-frames are positioned substantially parallel to the side frame below the in frame (50).
Frame (54) and left and right main frames (50)
Through the gear case (43), the left and right sub-frames (5
4) is connected and the upper part between the left and right sub-frames (54) is
Which was provided the transmission shaft (67), by consecutively the engine (2) the left and right main off <br/> frame also serves as a gear case (43) for transmitting the output (50) the vehicle body to the front frame (3) An engine (2) can be installed, and even if a work machine is installed behind the vehicle, the front-rear balance of the vehicle body can be maintained well, the pitching operation of the vehicle body can be easily reduced, and the transmission shaft is provided between the left and right main frames (50). Since (67) is provided, the left
The transmission shaft (67) can be easily protected by the left and right main frames (50) without inserting the transmission shaft (67) into the right main frame (50). Processing or assembly and disassembly of the transmission shaft (67) can be easily performed, and the transmission shaft (67) is divided into a front step (11a) and a rear step (11b). Detachable for maintenance and repair of only the front or rear part, improving agricultural workability, simplifying vehicle body structure and improving ease of handling, etc. , and bending deformation load in the vertical direction
The strength of the left and right main frames (50) with respect to
The frame (71) can be easily enhanced,
Compared with the conventional structure that secures the required strength with only the arm (50)
To reduce the cross-sectional dimensions of the left and right main frames (50)
The thinner wall thickness makes it easier to reduce manufacturing costs.
The gear case (43) mounting strength and left and right main frame
(50) and left and right sub-frames (54)
Both can be easily improved by mutual reinforcement.
And the transmission shaft below the left and right main frames (50).
(67) The lower surface is defined by the left and right sub-frames (54).
It can protect the easily, is shall be easily prevented winding like straw grass.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of an airframe structure.

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 FIG. 7;

FIG. 10 is a side view of a reduction gear case.

FIG. 11 is a plan view of the same.

FIG. 12 is a front view of a transmission case.

FIG. 13 is an explanatory view of traveling drive showing a modification.

[Explanation of symbols]

(2) Engine (4) Transmission case (11) Step (11a) Front step (11b) Rear step (43) Gear case (50) Main frame (54) Sub-frame (67) Output shaft (transmission shaft)

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60K 17/04 A01C 11/02 313 B62D 49/00

Claims (2)

(57) [Claims] 1. A mobile agricultural machine in which a gear case (43) for transmitting an output of an engine (2) is connected and fixed to the front side of a left and right main frame (50), and a rear side of a body frame (3) on which an engine (2) is mounted is a gear case. (11) connecting and fixing the vehicle body frame (3) to the left and right main frames (50) via the gear case (43) and providing the vehicle body frame (3) on the upper surface of the left and right main frames (50). A front step (11a) and a rear step (11b) are separately formed above the gear case (43) .
Below the left and right main frames (50), substantially parallel to the side view
Left and right subframes (54)
(50) via the gear case (43)
A mobile agricultural machine having a frame (54) connected thereto . 2. A mobile agricultural machine in which a gear case (43) for transmitting an output of an engine (2) is connected and fixed to the front side of a left and right main frame (50), and a rear side of a body frame (3) on which the engine (2) is mounted is a gear case. (43), and the vehicle body frame (3) is integrally connected to the left and right main frames (50) via a gear case (43).
The left and right eyes of the engine (2) a transmission shaft for transmitting the output (67)
Causes disposed between-frame (50), the left
Step (1) of providing on the upper surface side of the right main frame (50)
1) The front step (11a) is performed above the gear case (43).
Split formed in the rear step (11b) and said right and left main
Left and right sub-frames approximately parallel to the bottom of the frame (50) when viewed from the side
(54), and the left and right main frames (50)
Left and right subframes (54) via gear case (43)
And above the left and right sub-frames (54).
A mobile agricultural machine comprising a transmission shaft (67) .