JPH08216706A - Rice transplanter - Google Patents

Abstract

PURPOSE: To safely and surely install a rice transplanter and also facilitate the supply of fuel to a fuel tank by improving the balance of the fuel tank. CONSTITUTION: A fuel tank 40 is disposed on the lower side of a step 67 in a position opposite to a muffler with an engine 2 interposed between them, and the height of the position of an oil feeding tap 98 of the fuel tank 40 is made substantially agree with the height of the upper surface of the step 67.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type rice transplanter equipped with a seedling table and a planting claw for continuously carrying out seedling planting work.

[0002]

2. Description of the Related Art In this type of rice transplanter equipped with a gasoline engine, for example, a fuel tank is generally provided above the engine.

[0003]

[Problems to be Solved by the Invention] However, in this case,
The larger the engine, the larger the capacity of the fuel tank, the larger the installation space, and the more compact the structure can be. There are problems such as making it worse.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the fuel tank is arranged on the lower side of the step on the opposite side of the muffler holding the engine, and the position of the fuel plug of the fuel tank is set to the upper surface of the step. It is made to match the height substantially, the fuel tank is made lower than the upper surface of the engine, and the fuel tank and the muffler are distributed and arranged on the left and right of the engine to prevent the fuel tank from becoming hot due to the heat of the engine or the muffler. In addition, the excess space under the step can be effectively used to easily install a large-capacity fuel tank with a compact structure.Furthermore, the normal-time fuel tank is safely protected by the step, and the step can be used when refueling the fuel tank. This makes it possible to easily perform the replenishment work from either the ground or on the step without causing an obstacle.

Further, a center frame which is disposed in the front-rear direction in the substantial center of the vehicle body and a step stay which is disposed outside the center frame are provided, and an auxiliary stay mounted between the center frame and the step stay and a center frame are provided. It supports the fuel tank, and when the step stay is removed for maintenance and inspection of the engine, the fuel tank is left on the center frame side to improve the maintainability of the engine and the step stay is supported by the auxiliary stay. To improve the rigidity of the.

Further, a sheet metal lid for covering the top of the oil filler plug is provided, and the lid is integrally joined to a step rubber plate laid on the upper surface of the step, and the lid is opened and closed by using the rubber plate as a prolonging member. Normally, the lid and the rubber plate cover the top of the oil filler plug to protect the oil filler plug's safety, and at the time of refueling, the hinge action of the rubber plate opens the lid to facilitate fueling work. The structure for opening and closing the body is extremely simple without the need for special parts for opening and closing.

Further, the fuel tank is arranged on the lower side of the step on the opposite side of the muffler sandwiching the engine, and the fuel cock provided between the fuel tank and the engine is integrally attached to the fuel tank. Then, connect the fuel hose between the fuel cock of the fuel tank and the engine with the shortest length to prevent accidents such as damage to the hose. In addition to providing a good and safe and secure attachment, the fuel cock is convenient for handling and maintenance.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of the fuel tank portion, FIG. 2 is a side view of the 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 mounts an engine (2). It is mounted on the body frame (3) which is a center frame, and the front wheels (6) for traveling paddy fields are supported in front of the mission case (4) through the front axle case (5), and at the rear of the mission case (4). A rear axle case (7) is provided in series, and the rear axle case (7) supports the rear wheel (8) for traveling paddy fields. On both sides of the bonnet (9) covering the engine (2), etc., a spare seedling stand (1
0) is mounted, the mission case (4) and the like are covered by a vehicle body cover (12) on which an operator rides via a footrest (11), and a driver's seat (13) is placed above the vehicle body cover (12). A steering handle (14) is provided at the rear of the hood (9) in front of the driver's seat (13).

Further, (15) in the figure is a planting section provided with a seedling table (16) for planting 6 rows and a plurality of planting claws (17), which are made of a synthetic resin having a high front and low front. Forward tilting seedling stand (1
6) is supported on the planting case (20) through the lower rail (18) and the guide rail (19) so as to be slidable left and right, and at the same time, 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. Further, a hitch bracket (24) is provided on the front side of the planting case (20) via a rolling fulcrum shaft (23), and a lift link mechanism (27) including a top link (25) and a lower link (26) is provided. A hitch bracket (24) is connected to the rear side of the traveling vehicle (1), and the link mechanism (2
A lifting cylinder (28) for lifting and lowering the planting part (15) through the lower part (7) is connected to the lower link (26) to drive and move the front and rear wheels (6) and (8), and at the same time reciprocate left and right. One seedling worth of seedlings is taken out from the sliding seedling placing table (16) by the planting claws (17), and the seedling planting operation is continuously performed.

Further, in the figure, (29) is a main transmission lever, (3
(0) is a planting operation lever, (31) is a planting sensitivity adjusting lever, (32) is a main clutch pedal, (33) and (33) are left and right brake pedals, (34) is a center float for two-way leveling, ( 35) is a side float for equalizing 2 sections,
(36) is a side-row fertilizer applicator for six rows.

Further, as shown in FIGS. 4 to 9, the pedestals (37) are integrally fixed to the upper surface of the front portion of the body frame (3) which is inclined to the front low rear height (inclination angle of about 4 degrees), and the pedestal ( 37) ... The front and rear direction of the anti-vibration rubber (3
8) is attached to the engine base (39), the engine (2) is mounted on the engine base (39), the fuel tank (40) is mounted on the left side of the engine (2), and the engine (2) is mounted on the left side of the engine (2). While installing the muffler (41) on the right side,
A battery (43) is attached to the front end side of the vehicle body frame (3) via the front frame (42).

A steering handle (14) for integrally fixing a case base (44) to the vehicle body frame (3), attaching a steering case (45) to the case base (44), and inserting the steering case (45) inside the tubular body (46). ) Steering shaft (14a)
Is erected on the upper surface of the steering case (45) substantially at the center between the left and right body frames (3) and (3), and the output shaft (47) is projectingly provided on the lower surface of the steering case (45) so that the left and right front wheels (6 ) A steering arm (48) for changing the direction of (6) is attached to the output shaft (47).

A cylindrical bearing body (49) which is substantially horizontal in the front-rear direction is welded and fixed to the lower side of the engine base (39) below the engine (2), and the counter shaft (49) is fixed to the bearing body (49). 50) is inserted and supported, and the counter pulley (5) is attached to the front end of the counter shaft (50) that projects forward from the bearing body (49).
1) is mounted and an alternator (52) is arranged in front of the engine (2) so as to face the output shaft (53) in front of the engine (2) substantially above the center between the left and right body frames (3) and (3). And an output pulley (54) is attached to the output shaft (53), the output pulley (54) is connected to the counter pulley (51) through V belts (55) (55), and an alternator is also provided. The output pulley (54) is connected to the input pulley (56) of (52) via the V belt (57).

Further, as shown in FIG. 10, a rear axle case (7) is fixed to the rear end of the vehicle body frame (3) by bolts, and a rear surface of the mission case (4) is fixedly connected to the front surface of the rear axle case (7). At the same time, the clutch case (5
8) is integrally formed, and the right side rear surface of the continuously variable belt transmission case (59) is connected and fixed to the front surface of the clutch case (58), and the lifting cylinder (28) is operated.
0) is fixed to the left rear surface of the belt shift case (59), and is a square pipe-shaped left and right body frame (3).
The cases (4), (58) and (59) and the hydraulic pump (60) are suspended and fixed at a position lower than the upper surface between (3), and the transmission shaft (6) with a universal joint is fixed.
1) is provided between the rear end of the counter shaft (50) and the belt shift case (59) to transmit the output of the engine (2) to the belt shift case (59), and the front axle case (5) and the mission case (4). Between the front wheel transmission shaft (6
2) is provided, and the shift output of the mission case (4) is transmitted through the axle cases (5) and (7) to the front and rear wheels (6) and (8).
It is configured to tell.

Further, as shown in FIG. 11, a left and right guard stay (63) is provided between the upper end surfaces of the front frames (42) (42) whose lower ends are fixed inside the front ends of the left and right vehicle body frames (3) (3). Secure with bolts, guard stay (63)
The left and right step stays (64) and (65) are fixed to both left and right ends of the front step stays (63), (64), and (65) to form a front step stay (66) having a U-shape in a plan view. Further, the left step stay (64) is extended to the rear of the fuselage on the upper surface side of the fuel tank (40), and the right step stay (65) is extended to the rear of the fuselage on the upper surface side of the muffler (41). Body cover (1
2) is formed substantially parallel to the shape of the front end and left and right side ends of the work front step (67), and the front step (6)
The stays (63) (64) (65) are attached to the lower surface side of the front step (67) substantially parallel to the flat shape of the upper surface of 7), and the front step (67) is performed by the stays (63) (64) (65). ) Is limited to protect the fuel tank (40), the muffler (41) and the battery (43).

Furthermore, the left and right step stays (64)
Lateral stays (68) (6
9) (69) to support the vehicle body frame (3), and at the rear ends of the left and right step stays (64) (65), the front ends of the left and right rear stays (70) (71) are attached to the bolts (7).
The left and right rear stays (70) and (71) are symmetrically arranged in an L shape in a plan view, and are tilted to a low front and rear height in a side view, and the left and right vehicle body frames (3 The rear stays (70) and (71) are detachably connected to a rear view portal-shaped lift frame (73) that integrally connects the rear ends of the rear stays (7) and (3).
0) (71) and a lift frame (73) with a left and right separation type rear step stay (74),
The front step (67) is provided so as to support the rear step (75) which is adjacently arranged behind the front step (67). The front and rear step stays (66) (74) are integrally connected in a loop shape in a plan view so as to have a function as a protective frame for the machine body.

Further, as shown in FIG. 12, front and rear mounting plates (77a) are provided on the front end sides of the left and right rear stays (70) (71).
Auxiliary step (76) for getting on and off the worker via (77b)
The front mounting plate (77a) and the front rear stays (70) (71) connected to the pivoting plate (77) at the rear ends of the left and right step stays (64) (65) by bolts (7).
2), while a horizontal frame (78) is laid horizontally between the rear surface of the auxiliary step (76) and the vehicle body frame (3), and a rear-view-shaped mounting plate (79) is mounted on the horizontal frame (78). ) Is used to support a tool box cradle (81) for accommodating the tool box (80). The tool box cradle (8
1) is a bottom plate (82) having bent edges (82a) (82b) on both left and right sides, and a bent edge (83a) is fixed to the bottom plate (82) in a substantially orthogonal manner at the center of the back surface thereof, and is bent to the front side. Bottom plate (8
2) A frame plate (83) forming a rear wall portion (83b) and a top plate portion (83c) that are bent in a U shape to the upper side, and a top plate portion (8).
3c) has a leaf spring (84) fixed to it, and when the tool box (80) is stored in the tool box cradle (81), the bottom plate (82), left and right bent edges (82a) (82b), and front bent edge (83a)
The position of the tool box (80) is regulated from the five directions of the rear wall portion (83b) and the leaf spring (8).
The tool box (80) is regulated by the urging force of (4) so that the tool box (80) can be safely stored on the lower side of the rear step (75) and easily detached.

As shown in FIGS. 13 to 14, the fuel tank (40) is supported below the front step (67) on the front side of the left body frame (3) and the left step stay (64). The bracket (85) on the left outer side surface of the left front frame (42) is connected and supported by the front end right side of the upper and lower joint edges (40a) of the fuel tank (40) through a bolt (86), and the front side of the left vehicle body frame (3). Bracket (87) fixed to the left outer surface of the left side front frame (4)
2) The tank stay (90) is laterally laid between the brackets (88) fixed to the front right inside of each of the bolts (89) through
On the tank stay (90), the rear end of the joint edge (40a) of the fuel tank (40) is connected via a bolt (86),
A loop-shaped tank support frame is formed by the body frame (3) and the stays (64) (90) to improve rigidity, and the tank (40) is attached to the body frame (3) side when the left step stay (64) is removed. ) Support is left, and maintenance and inspection can be performed with the engine (2) and the fuel tank (40) left integrally on the machine to improve maintenance. are doing.

Further, the fuel tank (40) is provided with a fuel filler (91) substantially in the center of the upper surface, two breathers (92) on the front and rear right sides of the upper surface, and a fuel cock (93) on the lower front side of the bottom surface. When the two breathers (92) have small diameter breather holes (92a) and are provided at a certain distance (A) (A> 0) in the front and rear, and the body tilts back and forth due to ridge crossing, etc. However, it is configured to prevent fuel leakage.

The fuel cock (93) is arranged at the leftmost outside of the front end of the tank (40) and inside the front bumper portion (67a) of the previous step (67).
The yoke (95) is fixed to the lower surfaces of the upper and lower joining edges (40a) of the tank (40) via bolts (94), and the cock (93) is integrally fixed to the yoke (95) via bolts (96). The fuel cock (93) can be easily inspected and adjusted, and the cock (93) and the tank (4
0) by integrating the engine (2) and the tank (4
(0) to prevent accidents such as clogging and damage of the fuel hose (97) connected to the fuel hose (97), and to attach the cock (93) to the bumper part (6).
7a) The inside of the cock (93) is configured so as to protect the cock.

Further, a tank cap (9) which is a filler plug for closing the filler opening (91) of the fuel tank (40).
8) The upper part is made to face the opening (99) of the previous step (67) so that the height of the upper surface of the upper surface of the previous step (67) is substantially matched, and the circular recess having a mountain-shaped cross section that closes the opening (99). A rectangular sheet metal lid (100) having (100a) inside is integrally fixed to the inner surface of the step rubber (101) laid on the upper surface of the previous step (67),
Rear step rubber plate (101a) having a lid (100)
The rubber (101) is separated into the front step rubber plate (101b) on the front side. And the lid (10
0) A lid opening / closing lever (102) is provided between the lid body (100) and the rubber plate (101a) on the front side so that the base end is clasped and the tip is protruded to the left outside, and the lid body is held by the opening / closing lever (102). When lifting the rubber plate (101a) of (100) part,
The upper part of the opening (99) is opened and the fuel filling port (9
1) allows fuel oil to be replenished while opening (99)
The opening (99) of the previous step (67) when closing the
The magnet (103) fixed at the front position is attached to the lid (10
0) is adsorbed, and the upper part of the opening (99) is covered with a lid (100).
Also, the rubber plate (101a) is configured to be securely closed and held. In this case, the rubber plate (101a) is attached to the lid (1
00) to enable reliable opening and closing of the lid body (100) with a simple structure without requiring an additional opening and closing member.

Further, the cap (9) of the filler opening (91)
8) is provided above the lower surface of the previous step (67) to prevent the cap (98) from being directly covered with mud from the lower side of the previous step (67), and at the lower end of the left preliminary seedling placing table (10). Front and rear seedling stand stays (104) (10)
The above-mentioned cap (98) is arranged between 5), and this stay (104) (105) is utilized as a protective stay of the cap (98).

Further, as shown in FIG. 15, the cap (9
By further ensuring a gap of a certain size (B) (B> 0) between the lowermost surface of 8) and the upper surface of the rubber plates (101a) (101b), a further mud prevention effect can be achieved.

This embodiment is constructed as described above, and the fuel tank (40) is provided at a lower position on the side of the engine (2) and below the front step (67), and the muffler (41) is provided. The fuel tank (40) on the opposite side
And the fuel tank (40) is lower than the upper surface of the engine (2), and the fuel tank (4) is provided on the left and right of the engine (2).
0) and the muffler (41) are separately arranged to prevent the heat of the engine (2) or the muffler (41) from raising the temperature of the fuel tank (40), and bubbles are generated in the fuel inside the carburetor. By eliminating the problem of not being properly supplied, and by arranging these engine (2), fuel tank (40), muffler (41), etc. in the front, the front-rear balance with the rear planting part (15) is improved. In addition, by making the installation height of the refueling cap (98) of the fuel tank (40) substantially equal to the height of the upper surface of the previous step (67), the cap (98) can be prevented from obstructing the work. The fuel tank (40) is safely protected in the step (67), and the fuel tank (4)
When the fuel is refilled to 0), reliable refueling without oil leakage can be easily performed.

[0025]

As is apparent from the above embodiments, according to the present invention, the fuel tank (40) is disposed below the step (67) at a position opposite to the muffler (41) which sandwiches the engine (2). At the same time, since the height of the position of the filler plug (98) of the fuel tank (40) is made to substantially coincide with the height of the upper surface of the step (67), the fuel tank (40) should be lower than the upper surface of the engine (2). By arranging the fuel tank (40) and the muffler (41) separately on the left and right of the engine (2), it is possible to prevent the temperature of the fuel tank (40) from becoming high due to the heat of the engine (2) or the muffler (41). Further, the excess space under the step (67) can be effectively used to easily install a large-capacity fuel tank (40) in a compact structure, and the normal-time fuel tank (40) can be secured by the step (67). In addition, the fuel tank (40) can be easily replenished from the ground or the step (67) without disturbing the step (67) when refueling the fuel tank (40). It can be improved.

Further, a center frame (3) arranged in the front-rear direction at the substantial center of the vehicle body and a step stay (64) arranged outside the center frame (3) are provided. Since the fuel tank (40) is supported by the auxiliary stay (90) mounted between (64) and the center frame (3), the step stay (64) can be used for maintenance and inspection of the engine (2). Even when the fuel tank (40) is removed, the fuel tank (40) can be left on the side of the center frame (3) to improve the maintainability of the engine (2) and the like, and the auxiliary stay (90) can be used to maintain the step stay (64). The rigidity of can be improved.

Further, a sheet metal lid (100) for covering the upper portion of the oil filler plug (98) is provided, and the lid (100) is integrally joined to the step rubber plate (101a) laid on the upper surface of the step (67). Since the lid (100) is opened and closed by using the rubber plate (101a) as a prolonging member, the oil filler plug (9) is normally provided by the lid (100) and the rubber plate (101a).
8) The upper part can be covered to protect the refueling plug (98) safely, and at the time of refueling, the lid (100) is opened by the hinge action of the rubber plate (101a) to facilitate refueling work. In addition, the opening / closing structure of the lid body (100) can be made extremely simple without requiring any special opening / closing parts, and is excellent in structure and economy.

Furthermore, the muffler (4) which sandwiches the engine (2) with the fuel tank (40) below the step (67).
1) and the fuel tank (4
0) and the engine (2) between the fuel cock (9
Since 3) is integrally attached to the fuel tank (40), the fuel hose (97) is shortest between the fuel cock (93) of the fuel tank (40) and the engine (2).
Can be connected to prevent accidents such as damage to the hose (97), and by integrally mounting with the fuel tank (40), the fuel cock (93) and the fuel hose (9) can be connected.
7) Good and safe and secure attachment can be performed, and a remarkable effect such as convenience of handling operation and maintenance inspection of the fuel cock (93) can be achieved.

[Brief description of drawings]

FIG. 1 is a side view of a fuel tank section.

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

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

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

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

FIG. 6 is a plan view of a step stay.

FIG. 7 is a side view of a step stay.

FIG. 8 is a front explanatory view of an engine section.

FIG. 9 is a side view of the engine section.

FIG. 10 is a side view illustrating a mission case portion.

FIG. 11 is an explanatory plan view of a front step stay portion.

FIG. 12 is an explanatory diagram of a tool box cradle.

FIG. 13 is a plan view of a fuel tank section.

FIG. 14 is a plan view of a fuel tank section.

FIG. 15 is a side view illustrating a tank cap portion.

[Explanation of symbols]

 (2) Engine (3) Frame (40) Fuel tank (41) Muffler (64) Step stay (67) Step (90) Stay (93) Fuel cock (98) Cap (fuel plug) (100) Lid (101a) ) Rubber plate

Claims (4)

[Claims] 1. A fuel tank is arranged on the lower side of a step on the opposite side of a muffler holding an engine, and a height of a fuel plug of the fuel tank is made substantially equal to a height of an upper surface of the step. Rice transplanter that is characterized by doing. 2. A center frame, which is disposed substantially in the center of the vehicle body in the front-rear direction, and a step stay, which is disposed outside the center frame, and includes an auxiliary stay mounted between the center frame and the step stay, and a center frame. The rice transplanter according to claim 1, wherein a fuel tank is supported. 3. A cover made of sheet metal is provided to cover the top of the oil filler plug,
2. The rice transplanter according to claim 1, wherein a lid is integrally joined to a step rubber plate laid on the upper surface of the step, and the lid is opened and closed by using the rubber plate as a prolonging member. 4. The fuel tank is arranged on the lower side of the step at a position opposite to the muffler which sandwiches the engine, and a fuel cock provided between the fuel tank and the engine is integrally attached to the fuel tank. Rice transplanter characterized by being configured.