JP3177793B2 - 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 shown in Japanese Utility Model Application Laid-Open No. 63-94351 , a clutch is mounted on a fixed pulley of a belt continuously variable transmission mechanism.
There is a technique of Ru fitted the case.

[0003]

In the prior art, the clutch case of the output clutch and the fixed pulley are integrally fixed.
By doing so, it is necessary to replace the clutch case due to wear of the fixed pulley, and it is necessary to replace the pulley when the clutch case is abnormal . In addition,
As shown in JP-A-62-110057, the movable pulley
There is also technology of the latch cover are bolt fixed, the mosquito
Similarly to the bar, when the fixed pulley and the clutch case are separately formed and bolted and fixed ,
Must be formed, and bolts must be
There is a problem such as Ru required der the trouble of tightening.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a belt continuously variable transmission mechanism having a fixed pulley and a movable pulley,
In a mobile agricultural machine having an output clutch for turning on and off the shift output of the transmission mechanism, a concave / convex engaging portion is provided for engaging the outer periphery of the fixed pulley and the outer periphery of a clutch case of the output clutch with each other. freely to engage the connecting and separating the clutch case and Rutotomoni, the Kuratchike
A speed change operation body is provided on the pulley side opposite to the
Clamp the side of the clutch case opposite the pulley installation side.
Gear case in which a switch operating body is provided and the shaft of the pulley is provided
The clutch operating body is arranged between the clutch case and
So, the fixed pulley and clutch
The case can be easily assembled or disassembled.
Easily secure the space for the gearbox on the side of the pulley
And a clutch case between the pulley and the gear case.
And a clutch operating body can be easily incorporated .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a sectional view of an input pulley 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 mounted. A rear end of a body frame (3) to be mounted is connected to a transmission case (4), and a front paddle traveling wheel (6) is supported in front of the transmission case (4) via an axle case (5). A transmission case (7) is continuously provided on both sides of a rear part of the case (4), and a rear wheel (8) for traveling in paddy fields is supported at a rear end of the transmission case (7). A spare seedling table (1) is provided on both sides of the hood (9) covering the engine (2) and the like.
0), and the transmission case (4) is formed by a body cover (12) forming a step (11).
And a driver's seat (1) above the vehicle body cover (12).
3) is mounted, and a steering handle (14) is provided in front of the driver's seat (13) and behind the hood (9).

[0006] In the figure, reference numeral (15) denotes a planting portion provided with a seedling mounting table (16) for six-row planting 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. The case (20) is supported, and a pair of claw cases (22) and (22), which are a pair of planting arms, are disposed at symmetrical positions about the rotation axis of the case (21). Attach the planting claws (17) and (17) to them. 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. The support frame (24) is connected to the rear side of the traveling vehicle (1) by the link mechanism (27).
Cylinder (2) for raising and lowering the planting section (15) through the
8) is connected to a lower link (26), and the front and rear wheels (6) and (8) are driven and moved, and at the same time, seedlings for one strain are planted from a seedling mounting table (16) which is reciprocally slid left and right. It is configured to take out with a nail (17) and continuously perform seedling planting work.

[0007] In the figure, (29) is the 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, as shown in FIGS. 4, 5 and 6, a gear case (39) through which the steering shaft (38) of the steering handle (14) is inserted is provided on the rear side of the engine (2). Pulley (40) (41) and belt (42)
A belt continuously variable transmission mechanism (43) having an input shaft (45) of a gear case (39) connected to an output shaft (44) of the engine (2) via the continuously variable transmission mechanism (43); The transmission case (4) is connected to the gear case (39) via an output shaft (46), and the transmission case (4) is connected via a front-rear traveling drive shaft (47) (48).
The case (5) (7) is connected to the transmission case (20) via the planting drive shaft (49) to the transmission case (4).
The input pulley (41), the input shaft (45), and the output shaft (46) are connected via the main clutch (50) and the reduction gear (51) which are intermittently operated by 2), and the continuously variable transmission mechanism (43) and the gear case are connected. The transmission of the engine (2) is transmitted to the transmission case (4) through the transmission (39) at a reduced speed, and the main transmission lever (2) of the transmission case (4) is transmitted.
The multi-speed transmission output according to 9) is transmitted to the front and rear wheels (6) and (8) and the planting section (15).

The input / output cams (54) (5) connected to the tension roller (52) by a rod (53).
5), and input / output rollers (56) (57) to be brought into contact with the respective cams (54) (55).
The mounting plate (58) provided with 6) is fixed to the side of the engine (2), and the mounting plate (59) provided with the input roller (57) is connected to the support frame (60) of the vehicle body frame (3).
And the actuator is a speed change motor (61)
The input cam (55) is connected to the screw shaft (62) of the motor, and the input / output cam (54) (55) is connected via the rod (53) by the forward / reverse control of the motor (61) mounted on the vehicle body frame (3). ) To rotate the input / output pulley (40)
(41) The winding diameter of the belt (42) is changed by changing the width, and the speed ratio of the pulleys (40) (41) and the belt (42) is changed steplessly.

[0010] Further, as shown in FIG.
And a movable pulley (6) that slides in the axial direction of the input shaft (45) by the rotation of the cam (55) to move toward and away from the fixed pulley (63).
4) is provided on the input pulley (41), and the input shaft (4) is provided via two bearings (65) and (65).
5) a clutch case (66) for free rotation and a clutch arm (6) connected to the main clutch pedal (32).
The clutch plate (68) for connecting the clutch case (66) to the input shaft (45) by the crimping operation of (7), and the case lid (70) for fixing the screw (69) to the clutch case (66) by the pulley ( 41) The main clutch (50) is an output clutch for turning on and off the shift output.

A notch (71) and a projection (72), which are concave and convex engaging portions, which are fitted to the outer periphery of the fixed pulley (63) and the outer periphery of the clutch case (66), are formed. As shown also, the notch (71) on the outer periphery of the fixed pulley (63) is connected to the protrusion (72) on the outer periphery of the clutch case (66).
The fixed pulley (63) and the clutch case (66) are detachably engaged and connected via the notch (71) and the projection (72). 63) is formed by bending, and a notch (71) is formed on the outer periphery of the pulley (63) by punching.
And the projection (72) is integrally formed when the clutch case (66) is formed by casting.

As is clear from the above, the fixed pulley (6
3) A belt continuously variable transmission including a movable pulley (64)
Turning on / off the gear (43) and the shift output of the speed change mechanism (43)
To provide a main clutch (50) as an output clutch
In an agricultural machine, an outer periphery of the fixed pulley (63) and the main
Mutually around the outer periphery of the clutch case (66) of the latch (50)
The notch (71), which is a concave / convex engaging portion to be fitted, and the projection (7)
2) is provided, and the notch (71) and the projection (72) are
Therefore, the fixed pulley (63) and the clutch case (66)
The clutch case is detachably engaged with the clutch case.
(66) Pulley (63) (64) side opposite to installation side
An input cam (55), which is a shift operation body, is provided at
(63) (64) Clutch case on the side opposite to the installation side
(66) Clutch arm which is a clutch operating body on the side
(67), and the shaft (4) of the pulley (63) (64) is provided.
The gear case (39) provided with 5) and the clutch case (6)
The clutch arm (67) is arranged during 6). Soshi
And fixed by the connection of the concave and convex engaging portions (71) and (72).
Assembly (63) and clutch case (66)
The solution can be easily made, and the pulleys (63) and (64)
Easy to secure space for gear change operation body (55) on the side of
And the pulleys (63) and (64) and the gear case
(39) During the clutch case (66) and the clutch operation
Sakutai (67) can be incorporated into easy.

Also, two bearings (65) (6) are mounted on the input shaft (45) near the base of the fixed pulley (63).
5) supports the clutch case (66), prevents the clutch case (66) from falling down, and forms the outer periphery and base of the case cover (70) with a step (L) to form the case cover (70). The base protrudes in the direction of the axis of the input shaft (45), and a space for mounting a screw (69) is formed in the outer periphery of the case cover (70). The main clutch (50) is mounted in the direction of the axis of the input shaft (45). It is configured so that the width can be reduced.

[0014]

As is apparent from the above embodiments, the present invention provides a continuously variable belt transmission (43) having a fixed pulley (63) and a movable pulley (64), and the transmission (43).
In the mobile agricultural machine provided with an output clutch (50) for turning on and off the speed change output, a concave / convex engaging portion (1) which is fitted to an outer periphery of the fixed pulley (63) and an outer periphery of a clutch case (66) of the output clutch (50). 71) is provided (72), the engagement portion (71) (72) fixed pulley by (63) and when the clutch case (66) Ru was detachably engaged linked
In both cases, the opposite side of the clutch case (66) installation side
Gear (63), (64) and a speed change operation body (55)
The pulleys (63) and (64)
The clutch operating body (67) is installed on the side of the switch case (66).
And the shaft (45) of the pulleys (63) and (64) is provided.
Click between gear case (39) and clutch case (66).
A latch operating body (67) is provided, and
(71) The fixed pulley (63)
Easy assembly or disassembly of the clutch case (66)
And the side of the pulleys (63) and (64)
Easy to secure space for mounting the speed change operation body (55) on the surface
And the pulleys (63) and (64) and the gear case (3)
9) Clutch case (66) and clutch operating body during
(67) can be easily incorporated .

[Brief description of the drawings]

FIG. 1 is a sectional view of an input pulley section.

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

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of a traveling drive unit.

FIG. 5 is a side view of a continuously variable transmission mechanism.

FIG. 6 is a plan view of the same.

FIG. 7 is an exploded explanatory view of a clutch case portion.

FIG. 8 is an explanatory view of the assembly.

[Description of Signs] (43) Belt continuously variable transmission mechanism (45) Input shaft (50) Main clutch (output clutch) (55) Input cam (transmission operation body) (63) Fixed pulley (64) Movable pulley (66) ) Clutch case (67) Clutch arm (clutch operating body) (71) Notch (concavo-convex engaging portion) (72) Projection (concavo-convex engaging portion)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16H 9/00-9/26 A01B 33/08 A01C 11/02 313 B60K 17/00-17/08 F16D 13/76

Claims (1)

(57) [Claims] 1. A fixed pulley (63) and a movable pulley (6).
A belt continuously variable transmission mechanism (43) including 4) and an output clutch (50) for switching on and off the transmission output of the transmission mechanism (43).
And a clutch case (6) for the outer periphery of the fixed pulley (63) and the output clutch (50).
6) Concavo-convex engaging portions (71) and (7) to be fitted to each other on the outer periphery
2) is provided, the engagement portions (71) (72) freely to engage the connecting and separating the clutch case (66) and the fixed pulley (63) by Rutotomoni, said clutch case (66) installed
Gears on the side of pulleys (63) and (64) on the opposite side
(55), and the pulleys (63) and (64)
Clutch operation body on the side of clutch case (66) on the other side
(67), and the shaft (4) of the pulley (63) (64) is provided.
The gear case (39) provided with 5) and the clutch case (6)
A mobile agricultural machine characterized in that a clutch operating body (67) is arranged during 6) .