JP3360189B2 - 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, which is equipped with a seedling table and planting claws to continuously perform seedling planting.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid- Open No. 5-49320 , there has been a technique of providing a belt continuously variable transmission mechanism having a fixed pulley and a movable pulley, and a gear transmission case for inputting a shift output of the transmission mechanism. .

[0003]

According to the prior art, the output loss of the engine can be reduced by disposing a clutch on a shift output side pulley which forms a belt continuously variable transmission mechanism, but the clutch is internally provided. the case is easily configured Eze, the clutch is damaged easily by inundation, Bell
Since it is provided a clutch bets transmission case, clutch
Internal temperature of the belts transmission case becomes high by heating
There is a defect. Therefore, the clutch to install the clutch inside
Providing a case reduces manufacturing costs and weight.
It is not easy to reduce the amount, etc.
Improvement of handling operability, belt shift case and gear shift
There is a problem that the accuracy of mounting the case cannot be easily improved .

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a clutch for interrupting engine output in a mobile agricultural machine having a continuously variable belt transmission case for transmitting engine output and a gear transmission case for outputting driving force to an axle. is disposed between the belt transmission case and the gear transmission casing, gear strange
Part of the speed case is projected to allow
Form a clutch case, belt shift case and clutch
The case is fitted to the concave and convex , and the clutch is installed inside.
Special case is not required for
It is easy to reduce weight and weight, etc.
Gear shift case and gear shift case via the clutch case.
Can be easily connected to the proper dimensions and arrangement, handling such as assembly and disassembly
Improved operability, belt shift case and gear shift case
It is possible to easily improve the mounting accuracy and the like .

Also, a clutch plate forming a clutch is removed.
Attach the clutch drum to the output shaft of the belt transmission case.
The output of the belt transmission case is spline-fitted
Because the shaft directly supports the clutch drum, the joint
Easy installation of clutch in output shaft direction
And a belt shift case and clutch case.
Clutch shaft core is maintained in the proper position
Simplifies clutch assembly and installation
The accuracy can be easily improved .

[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 plan view of a transmission case portion, 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 used. It is mounted on the front upper part of the body frame (3), supports the front paddle traveling wheel (6) through the front axle case (5) in front of the gear transmission case (4), and the rear part of the gear transmission case (4). A rear axle case (7) is connected to the rear axle case (7), and the rear axle case (7) supports a paddy field 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 gear shift case (4) is mounted by a body cover (12) on which an operator rides through step (11). ), And 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 at the rear of 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 center float for two-row equalization, (35) is a side float for two-row equalization, and (36) is a side-row fertilizer for six rows.

Further, as shown in FIGS. 4, 5, 6, 7 and 8, a horizontal frame (3) is provided on a front upper surface of the vehicle body frame (3) which is tilted to a low front and rear height (a tilt angle of about 4 degrees). 37), and an engine mount (39) is attached to the upper surface of the horizontal mount (37), which is substantially horizontal in the front-rear direction, via a vibration-proof rubber (38), and the engine (2) is mounted on the engine mount (39). And a fuel tank (40) above the engine (2).
A muffler (41) is mounted in front of the engine (2), and a battery (43) is mounted on the front end side of the vehicle body frame (3) via a front frame (42).

Further, a case base (43) is integrally fixed to the body frame (3), a steering case (44) is mounted on the case base (43), and a steering handle (14) is inserted into the cylinder (45). ) Steering shaft (46)
The output shaft (47) is projected from the lower surface of the steering case (44) at the substantially center between the left and right body frames (3) and (3), and the output shaft (47) is projected from the lower surface of the steering case (44). The steering arm (4) that turns the 6)
8) is attached to the output shaft (47).

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

Further, a lower link fulcrum shaft (58) is provided at the rear end of the body frame (3), and the front end of the lower link (26) is attached to the fulcrum shaft (58). 3) Gate-shaped support (59) between rear ends
And the front end of the top link (25) is attached to the upper end of the column (59) via the top link fulcrum shaft (60).

A pedal fulcrum pipe (62) for providing a fulcrum shaft (61) for the brake pedal (33);
The pipe (62) is attached to the left and right body frames (3) and (3).
And the both ends of the pipe (62) are welded and fixed to the body frame (3), and the left and right body frames (3) and (3)
The pipe (62) is attached as a connecting member to the driver seat frame (6) for supporting the driver seat (13).
3) and a left and right sub-frame (64) (64) for mounting the elevating cylinder (28), and a front end of the sub-frame (64) which is obliquely inclined at a low front and rear high is welded and fixed to the pedal fulcrum pipe (62); The rear end of the sub-frame (64) is welded and fixed to the upper end of the column (59).

Further, as shown in FIGS. 2, 3, 4, 5, and 7, a pre-step (65) and a post-step (66)
And the body cover (12) by a rear cover (67).
Is formed so as to be separable into three parts, the rear cover (67) is removed, and the fertilizer applicator (36) is mounted on the part. The tank (68) for containing fertilizer, the feeding part ( 69), the fertilizer (36) is provided with a blower fan (72) for discharging fertilizer through a delivery pipe (71) to the side-strip fertilizer chute (70) of the floats (34) and (35);
A machine base (74) is attached to the upper side of the column (59) so as to be able to move up and down via a telescopic gas spring rod (73), and a fertilizer applicator (36) is fixed on the machine base (74).
The machine stand (74) is supported by the fixed rod (75) at the lowered position, and the fertilizer applicator (36) is arranged behind the driver's seat (13).

Further, as shown in FIG. 7, a bracket (77) of a rear axle case (7) is bolted and fixed to a stay (76) on a lower surface of a rear end of the body frame (3).
The rear surface of the gear transmission case (4) is connected and fixed to the front surface of the rear axle case (7), and the clutch case (78) is integrally formed on the right front surface of the gear transmission case (4). The right side of the belt transmission case (79) is connected and fixed, and the hydraulic pump (80) for operating the elevating cylinder (28) is fixed to the left rear side of the belt transmission case (79). Left and right side body frame (3)
A bolt (81) is fixed to (3) and the front surface of the belt transmission case (79) is fixed to the bracket (82) of the pedal fulcrum pipe (62) by bolts (83). (3) Each of the cases (4) and (78) at a position lower than the upper surface between (3) and (3).
(79) and hydraulic pump (80) with bolts (81) (8)
It is suspended and fixed by 3).

Further, as shown in FIG. 8, an input / output pulley (84) for changing the speed ratio continuously by changing the winding diameter.
(85) and V-belt (86) in the belt shift case (7
9) and universal joints (87) (8)
7), the front end of the input shaft (89) of the belt transmission case (79) is connected to the counter shaft (5) through a transmission shaft (88) having the same.
0) The hydraulic pump (80) is directly connected to the rear end of the input shaft (89), and the clutch pedal (3) is connected to the rear end of the input shaft (89).
Multi-disc friction type dry clutch (9)
0) is provided inside the clutch case (78), and the output shaft (91) of the belt transmission case (79) is connected to the input shaft (92) of the gear transmission case (4) via the clutch (90). I have.

A traveling output shaft (94) is connected to the input shaft (92) via a traveling transmission gear mechanism (93).
Front and rear axles (95) (9) supporting front and rear wheels (6) and (8)
The traveling output shaft (94) is connected to the front and rear wheel transmission shafts (97) and (98) to drive the front and rear wheels (6) and (8), and the PTO transmission gear is connected to the input shaft (92). The PTO shaft (100) is connected via the mechanism (99), and the PT
The planting part (15) is driven via the O-shaft (100), and the output of the PTO shaft (100) is branched by the sprocket (101) near the transmission case (4) to feed out the fertilizer (36). 69).

Further, as shown in FIGS. 1 and 9, the side surface of the gear transmission case (4) is fixedly fastened to a bracket (102) of the body frame (3) by bolts (81), and the pulleys (84) (85) are fixed. The belt (86) of ()) changes the winding diameter of the winding shaft (103) to the belt shifting case (79).
And the transmission shaft (103) is connected to the auxiliary transmission lever (3).
0) and the clutch plates (104) forming the clutch (90) are clamped by the movable and fixed pressure plates (105) (106), and the fixed shaft is attached to the input shaft (92). Press the pressure plate (106) with the bolt (10
7) Stop and fix, and press plate (105) on input shaft (92).
The clutch plate (104) is supported via (106). On the other hand, a clutch drum (109) is provided in which the clutch plate (104) is inserted and fitted into the inner circumferential groove (108), and the output shaft (91) is inserted into a shaft hole (110) of the drum (109). The ends are fitted with splines (111), and ring grooves (112) and (113) are formed at the joint between the rear surface of the belt transmission case (79) and the front surface of the clutch case (78). Positioning wheel (1)
14) is fitted, and the belt transmission case (79) and the clutch case (78) are fitted with concave and convex (inlay fitting) via the ring grooves (112) (113) and the ring body (114). A clutch case (7) is provided between a belt transmission case (79) for transmitting the output of the engine (2) and a gear transmission case (4) for outputting a driving force to the axles (95) and (96).
8) The clutch (90) is arranged via the output shaft (9).
Spline (11) of clutch drum (109) to 1)
1) Fitting operation and ring (1) to ring groove (112) (113)
14) The cases (78) and (79) are joined to each other by a fitting operation and fixed by bolting.

As apparent from the above, the engine (2)
A continuously variable belt transmission case (79) for transmitting output and a car
Gear shift case that outputs driving force to shafts (95) and (96)
Engine (2) in a mobile agricultural machine equipped with
The clutch (90) for interrupting the force
Gear (79) and the gear change case (4).
A part of the gear shift case (4) is protruded to
A clutch case (78) is formed between the
Belt shift case (79) and clutch case ( 78)
Make concave and convex fitting. And the clutch (90) is installed inside
No special case is required for
Reduce the weight and weight of the belt.
Gear (79) and gear change case (4)
(78) is connected to the proper size arrangement,
Throttle handling and belt shift case (79)
And the gear shifting case (4).
U.

Further , the clutch forming the clutch (90)
Clutch drum (109) for mounting the plate (104)
To the output shaft (91) of the belt transmission case (79).
Line (111) fitted, belt shift case (79)
Directly connect clutch drum (109) to output shaft (91)
Support and eliminate the need for joints, etc., toward the output shaft (91)
The mounting dimensions of the clutch (90) of the
Recessed gear case (79) and recessed clutch case (78)
The shaft center of the clutch (90) is maintained at an appropriate position by the convex fitting.
Simplifies and assembles the clutch (90) assembling operation.
Improve attachment accuracy.

FIG. 10 shows a clutch (90) having a wet structure, in which a partition wall (115) for separating the inside of the gear transmission case (4) and the inside of the clutch case (78) is formed. 115), an oil passage (116) is opened, and hydraulic oil in the gear shift case (4) is supplied to the clutch (9).
0) for cooling and clutch (90)
Are stored in independent spaces, and each shaft (92) (94) (10
0) and the like, regardless of whether the clutch (90) is attached or not, and compared with a structure in which the clutch (90) is provided in the same space as the gear mechanism (93) (99), the distance between the shafts is reduced. The outer shape (lateral width, vertical width) of the gear transmission case (4) is configured to be small.

[0022]

As can be seen from the above embodiment, the present invention provides a continuously variable belt transmission case (79) for transmitting the output of the engine (2) and a gear transmission for outputting the driving force to the axles (95) and (96). A clutch (90) for interrupting an engine (2) output in a mobile agricultural machine having a case (4).
Is disposed between the belt transmission case (79) and the gear transmission case (4), and a part of the gear transmission case (4) is
Protrude the clutch between the belt shift case (79)
A case (78) is formed, and a belt speed change case (79) is formed.
The clutch case (78) in which it is fitted irregularities, Kura
A special case for installing the switch (90) inside.
Unnecessary, reducing manufacturing costs and weight.
The belt shift case (7
9) and the gear shift case (4) to the clutch case (78)
Can be easily connected to the proper dimensions and arrangement through assembly, disassembly, etc.
Improved handling operability and belt shift case (79)
It is possible to easily improve the mounting accuracy of the gear transmission case (4) .

The clutch forming the clutch (90)
Clutch drum (109) for mounting the plate (104)
To the output shaft (91) of the belt transmission case (79).
Line (111) fitted, belt shift case
(79) Clutch drum (109) on output shaft (91)
Output without the need for joints.
Easy mounting dimensions of clutch (90) in shaft (91) direction
In addition to being able to reduce the
Clutch (90)
The shaft core of the clutch (90)
In this case, the assembling operation can be simplified and the mounting accuracy can be easily improved .

[Brief description of the drawings]

FIG. 1 is a plan view of a transmission case.

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.

FIG. 5 is a plan view of the same.

FIG. 6 is an enlarged side view of a front part.

FIG. 7 is an enlarged side view of a rear part.

FIG. 8 is a drive system diagram of a traveling vehicle.

FIG. 9 is an exploded explanatory view of FIG. 1;

FIG. 10 is a plan view showing a modification of FIG. 1;

[Explanation of symbols]

 (2) Engine (4) Gear transmission case (78) Clutch case (79) Continuously variable belt transmission case (90) Clutch (91) Output shaft (95) (96) Axle (104) Clutch plate (109) Clutch drum

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-49320 (JP, A) JP-A-1-273724 (JP, A) JP-A-3-78138 (JP, U) JP-A 63-78 119961 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 B60K 17/08 F16H 9/18

Claims (2)

(57) [Claims] A mobile agricultural machine having a continuously variable belt transmission case (79) for transmitting an output of an engine (2) and a gear transmission case (4) for outputting a driving force to axles (95) and (96). 2) is arranged between said belt transmission case (79) and the gear transmission case the clutch (90) to intermittently output (4), one gear transmission case (4)
Part of the belt shift case (79) so that
Switch case (78), and the belt shift case (7
9) A mobile agricultural machine characterized in that the clutch case (78) and the clutch case (78) are fitted to each other. 2. A clutch plate forming a clutch (90).
The clutch drum (109) for attaching (104)
Spline on the output shaft (91) of the default speed change case (79)
(111) The mobile agricultural machine according to claim 1, wherein the mobile agricultural machine is fitted .