JPH079868A - Traveling agricultural machinery - Google Patents

Abstract

PURPOSE:To ensure an output pulley to be properly fitted to the crankshaft of an engine. CONSTITUTION:Regarding a traveling agricultural machine where an output pulley 81 for various types of drive mode is fitted to the crankshaft 77 of an engine, the pulley 81 is integrated with a flywheel 91 mounted on the crankshaft 77, and the belt takeup section 81b of the pulley 81 is extended outside an engine seat, thereby transmitting power to a drive section via a belt outside the engine seat.

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 continuous seeding work.

[0002]

2. Description of the Related Art For example, there is means for mounting a traveling output pulley on an output shaft on one side of an engine and a PTO output pulley for driving other than traveling on a crankshaft on the other side.

[0003]

However, in the conventional means as described above, when the PTO output pulley is directly attached to the crankshaft end, the bolts and nuts for mounting the output pulley are loosened and the crank is not attached. Since there is play between the shaft and the pulley, it is necessary to separately provide a rotation stopping member for the output pulley.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a mobile agricultural machine in which an output pulley for various drives is attached to a crankshaft of an engine, the output pulley is integrated with a flywheel equipped on the crankshaft. The belt winding part of the pulley is extended to the outside of the engine base while being mounted, and the belt is transmitted to the drive part outside the engine base.For example, the pulley is attached to the flywheel by a plurality of mounting bolts. It is installed integrally and securely attached,
Even when the engine is started or stopped, the pulley is rotated and stopped gently without impact due to the inertia of the flywheel to prevent the mounting bolt from slackening, so that the pulley can be mounted more reliably and the mounting dimension accuracy can be improved. The belt wound around the output pulley can maintain good transmission without being adversely affected by the engine.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a side view of an engine flywheel part, FIG. 2 is a side view of a passenger rice transplanter, and FIG. 3 is a plan view of the same. In the figure, (1) is a traveling vehicle on which an operator rides, and an engine (2). Is mounted on the vehicle body frame (3), the front wheels (6) for traveling paddy fields are supported in front of the mission case (4) through the front axle case (5), and the rear axle case ( 7)
And the rear axle case (7) supports the rear wheels (8) for traveling paddy fields. The spare seedling mounts (10) are attached to both sides of the hood (9) that covers the engine (2) and the like, and the mission case (4) is provided by the vehicle body cover (12) on which an operator rides through the step (11). Etc., a driver's seat (13) is attached to the upper portion 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, and (36) is a side fertilizer applicator.

Further, as shown in FIGS. 4 to 7, the engine (2) is mounted on the pair of left and right vehicle body frames (3) and (3) through the engine base (37) and the anti-vibration rubber (38). Then, the middle of the seedling stand frame (39) for attaching the preliminary seedling stand (10) to both sides is welded and fixed to the upper surface of the body frame (3), and the steering shaft (40) of the steering handle (14) is decelerated. (41) It is arranged to stand upright on the upper surface, and the rear side of the vehicle body frame (3) is fixed by bolts to the front side of the reduction gear case (41). The steering case (42) is integrally fixed to the lower side of the reduction gear case (41), One end of a steering arm (43) having an L shape in plan view provided on the lower surface of the steering case (42) is connected to a knuckle arm (44) of the front wheel (6) via a steering rod (45), while hydraulically steering. Shirin (46) to be linked to the L-shaped other end of the steering arm (43), and configured to perform steering control of the aircraft.

Further, a pair of left and right main frames (47) and (47) front end brackets (47a) and (47a) are bolted and fixed to both sides of the rear portions of the cases (41) and (42) to fix the legs of the vehicle body cover (12). The cover frames (48) and (49) supporting the treads are welded and fixed to the front upper surface of the main frame (47), and the steering case (42) is also attached.
The front ends of the pair of left and right subframes (50) are fixed by bolts on both sides of the rear part, and the mainframe (47) and the subframe (50) are extended substantially parallel to each other in a side view. The front axle case (5) is swingably attached to the body (51) and the rear portion of the steering case (42), and both sides of the axle case (5) are projected from the space between the frames (47) and (50) to the left and right front wheels. (6) (6) is installed.

The rear end of each frame (47) (50) is attached to the bracket (52) of the rear axle case (7).
The mission case (4) at the front of the case (7) is fixed to the bracket (53) of the main frame (47) between the frames (47) and (50) on the front side of the mission case (4). Step frame (5
4) The gate-shaped pillars (55) provided with the links (25) and (26) are erected on the rear part of the main frame (47) while being connected to each other, and the right and left parts are connected between the front part of the frame (47) and the pillars (55). A pair of upper frames (56) (56) are installed obliquely, and an elevating cylinder (2) is provided in the middle of the upper frame (56).
In a mobile agricultural machine that is equipped with a main frame (47) for supporting the front and rear axle cases (5) and (7), the side surface of the main frame (47) is below the main frame (47). The sub-frame (50) is provided substantially parallel to the step (11).
By connecting one end side of the step frame (54) to the middle portion of the front and rear widths of the main frame (47) and the sub frame (50), the other end side of the step frame (54) is connected to the cover frame (49). There is.

Further, a belt continuously variable transmission mechanism (60) having input / output pulleys (57) (58) and a belt (59).
And an input shaft (62) of the deceleration case (41) on the output shaft (61) of the engine (2).
The transmission case (41) to the deceleration case (41) via the output shaft (63), and the front axle case to the transmission case (4) via the front drive shaft (64). (5) is connected, and the planting case (20) is linked to the mission case (4) via the planting drive shaft (65). The stepless transmission mechanism (60) and the deceleration case (41) are used. The engine (2) output to the transmission case (4) by deceleration transmission and the main transmission lever (2) of the transmission case (4).
The multi-stage shift output by 9) is transmitted to the front and rear wheels (6) and (8) through the axle cases (5) and (7).

A tension roller (66) for tensioning the belt (59) and pulleys (57) (58).
A connecting rod (67) interlockingly connected to the input / output cams (67a) (67b) for changing the winding diameter of the belt (59) of
The main frame (47) is provided with a speed change link (69) for rotatably supporting the shaft via a shaft (68).
One end of 9) and the connecting rod (67) are connected by a speed change rod (70), while the speed change motor (7) is connected to the other end of the link (69).
The motor (71) is attached to the bracket (73) of the main frame (47) by connecting the expansion / contraction output shaft (72) of 1), and the link (69) and the like are controlled by the forward / reverse control of the motor (71). Input / output cam (67
a) (67b) is rotated and the input / output pulleys (57) (5
8) The winding diameter (effective diameter) of the belt (59) is changed by changing the width, and the pulleys (57) (58) and the belt (5) are changed.
The gear ratio of 9) is configured to be continuously changed.

Further, a front guard frame (7) having a U-shape in front view, which supports the front step portion of the vehicle body cover (12), is provided.
4) and the front bumper (75) connect the front parts of the left and right vehicle body frames (3) and (3), and the seedling frame (3)
9) and the guard frame (74) between the vehicle body cover (12)
A battery (76) is provided on the lower right side of the front step portion via a cradle (76a).

An air-cooling fan (78) is attached to the right side of the engine (2) via a crankshaft (77), and cooling air is supplied to the engine (2) by the fan (78) and an engine base (37). ) Stay (79) on the right rear
Is fixed by welding, a hydraulic pump (80) as a drive unit is attached to the outside of the vertical portion of the stay (79), and the output pulley (81) of the crank shaft (77) and the inside of the vertical portion of the stay (79) are attached. Between the input pulley (82), the stay (79)
Via a tension pulley (84) at the tip of a tension arm (83) that is pivotally supported on the upper end, a hydraulic drive belt (85)
The engine (2) through the belt (85).
The hydraulic pump (80) is driven by decelerating the output, and a suction side low pressure pipe (86) communicating with the mission case (4) used as a hydraulic oil tank is connected to the front suction port of the hydraulic pump (80). At the same time, the flow dividing valve (87) is fixed to the rear surface of the hydraulic pump (80), and the actuator driving high-pressure pipes (88) (89) such as the lifting cylinder (28) and the steering cylinder (46) and the tank returning pipe (90). ) Is connected and connected to the rear discharge port of the hydraulic pump (80) via a flow dividing valve (87).

As shown in FIG. 1, the output pulley (81)
Is integrally attached to a flywheel (91) attached to the shaft end of the crankshaft (77).
A flywheel (91) is integrally fixed to the left side wall of 8), and an air-cooling fan integrated with the flywheel (91) via a nut (92) at the shaft end taper portion (77a) of the crankshaft (77). (78) is fixed and the fan (7)
8) One side edge (81a) of the hollow output pulley (81) is detachably fixed to the flange (93) integrally fixed to the right side wall of 8) via a plurality of bolts (94), and the belt winding The rotating part (81b) is extended to the right outside of the engine base (37) to securely attach the output pulley (81) without rattling or loosening, while the hydraulic pump is installed on the right outside of the engine base (37). The rotation of the output pulley (81) is transmitted to (80).

As shown in FIG. 8, a safety switch (95), which operates when the main clutch pedal (32) is depressed, is vertically positioned substantially behind a pedal boss (96) which pivotally supports the pedal (32) base end. A switch (95) is fixed to a mounting plate (97) integrally extending below the frame (49), and the pulley is attached to an arm (98) fixed to a pedal boss (96). (5
8) The clutch case (58a) of 8) is connected to the operating clutch rod (100) of the main clutch (99) and the arm (98) is brought into contact with the safety switch (95) when the pedal (32) is depressed. The engine (2) can be started only when the switch (95) is operated (main clutch is disengaged).

This embodiment is constructed as described above, and the output pulley (81) is directly connected to the crankshaft (7).
By integrally attaching to the flywheel (91) without attaching to 7), it is possible to attach the pulley (81) safely and securely without sudden impact when the engine (2) is started or stopped. Not only that, but also the dimensional accuracy is improved.

Further, by disposing the safety switch (95) of the main clutch at the time of starting the engine at a position substantially rearward of the pedal boss (96) and apart from the field scene, muddy soil is formed around the switch (95). It is possible to prevent inconveniences such as staying, and reduce malfunctions and failures.

The air-cooling fan (78) and the flywheel (91) may be integrally formed.

[0020]

As is apparent from the above embodiments, the present invention provides a mobile agricultural machine in which an output pulley (81) for various drives is attached to the crankshaft (77) of the engine (2). The output pulley (81) is integrally attached to the flywheel (91) mounted on the vehicle 77), and the pulley (81) is located outside the engine base (37).
The belt winding portion (81b) of the above is extended to transmit the belt to the drive portion (80) outside the engine base (37). For example, the flywheel (91) is attached to the pulley by a plurality of mounting bolts (94). (81) is integrally mounted and securely attached, and at the time of starting and stopping the engine (2), the pulley (81) is gently rotated and stopped without impact due to inertia of the flywheel (91). It is possible to prevent the mounting bolt (94) from being loosened and promote the more reliable mounting of the pulley (81) and the improvement of the accuracy of the mounting dimension, and moreover, the output pulley (8).
The belt (85) wound around (1) has a remarkable effect such that good transmission can be maintained without being adversely affected by the engine (2).

[Brief description of drawings]

FIG. 1 is a side view of an engine flywheel portion.

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

FIG. 3 is a plan view of a riding rice transplanter.

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

FIG. 5 is a plan view of a traveling vehicle body.

FIG. 6 is an explanatory plan view of an engine section.

FIG. 7 is a plan view of a belt continuously variable transmission mechanism.

FIG. 8 is a side view of a main clutch pedal portion.

[Explanation of symbols]

 (2) Engine (77) Crankshaft (80) Hydraulic pump (drive unit) (81) Output pulley (91) Flywheel

Claims (1)

[Claims] 1. In a mobile agricultural machine in which output pulleys for various drives are attached to a crankshaft of an engine, the output pulley is integrally attached to a flywheel mounted on the crankshaft, and the output pulley is provided outside an engine base. -A mobile agricultural machine characterized in that the belt winding portion of the battery is extended so that the belt is transmitted to the drive portion outside the engine base.