JP3010295B2 - Rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a planting device that takes out seedlings of one strain from a seedling mounting table that is reciprocated right and left by planting claws and plants them in a field, behind a traveling vehicle. The present invention relates to a riding type rice transplanter that is continuously connected via a three-point link mechanism and an elevating cylinder.

Conventional technology Conventionally, as shown in JP-A-61-232926, a pair of left and right body frames that are long in the front-rear direction are provided substantially in parallel, and an engine, a transmission case, and a front axle case for mounting front wheels are provided. There is a technique in which a rear axle case for mounting a rear wheel is disposed on the vehicle body frame, and a planting portion is mounted on a rear portion of the vehicle body frame via a link mechanism.

[Problems to be Solved by the Invention] The above-described conventional technology mounts an engine at a substantially middle portion in the front-rear direction of a vehicle body frame, attaches a transmission case to a front portion of the vehicle body frame, and provides a front axle case to the transmission case in a freely rotatable manner. In addition, it is not easy to maintain the front-rear balance of the body frame by installing the large planting part, and it is not easy to simplify the mounting structure of the transmission case receiving the front wheel supporting load and to improve the disassembly and assembly workability etc. There is a problem.

Means for Solving the Problems However, the present invention provides a pair of left and right body frames that are long in the front-rear direction substantially in parallel, and includes an engine, a transmission case, a front axle case for mounting front wheels, and a rear wheel. In a rice transplanter in which a rear axle case to be mounted is disposed on the vehicle body frame and a planting portion is mounted on a rear portion of the vehicle body frame via a link mechanism, an engine is mounted between left and right front end portions of the vehicle body frame and integrally connected. The front and rear axle holders that fix the transmission case and rear axle case to the rear ends of the left and right body frames and arrange the front axle case below At the lower center of the right and left body frames via the front axle board, The front end of the reinforcement pipe that connects the rear end to the through case is fixed to the axle holder. Compared with the conventional structure where the engine is mounted in the middle of the body frame, the front and rear balance of the body frame is maintained by the engine even when the large planting part is installed. In addition, a transmission case can be provided by using a rear axle case, and the case mounting structure can be simplified and the detachability can be easily improved. Since the axle holder is connected to the rear axle case by the reinforcing pipes arranged side by side, mounting of the front axle case, simplification of the reinforcing structure, and improvement of workability of attaching and detaching the case can be easily performed.

"Example" Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
FIG. 2 is a plan view of the traveling unit, FIG. 2 is a side view of the riding rice transplanter, FIG. 3 is a plan view of the same, and (1) shows a traveling vehicle on which an operator rides, and an engine (2) A transmission case (4) is mounted on the rear side of a vehicle body frame (3) mounted on the front side, and paddy field traveling front wheels (6) are supported on both rear sides of the engine (2) via a front axle case (5). At the same time, the rear wheels (8) for traveling in paddy fields are supported on both rear sides of the transmission case (4) via rear axle cases (7). Spare seedling mounts (10) are appropriately mounted on both sides of the hood (9) covering the engine (2), and the axle cases (5) and (7) are provided by a body cover (12) forming a step (11). And a driver's seat (13) is mounted above the transmission case (4) and above the vehicle body cover (12).
In front of the hood (9), a steering handle (1
4) is provided.

Further, in the figure, (15) is a planting device having a seedling mounting table (16) for multiple planting and a plurality of planting claws (17). Stand (16) with guide rail (1
8) and planting case (20) via guide rail (19)
The rotary case (21) is slidably supported on the right and left reciprocating, and is rotated at a constant speed in one direction.
0), and a pair of claw cases (22) and (22), which are a pair of planting arms, symmetrically about the rotation axis of the case (21).
And place the nail (17) (1) at the tip of the nail case (22).
7) Install.

A pivot (23) is provided on the front side of the planting case (20).
A support frame (24) is provided via a top link (2
5) and three-point link mechanism (2) including lower link (26)
7), the supporting frame (24) is connected to the rear side of the traveling vehicle (1), and the planting device (1) is connected via the link mechanism (27).
5) The traveling vehicle (1) is provided with a lifting cylinder (28) for raising and lowering the vehicle, and the front and rear wheels (6) and (8) are driven to travel at a substantially constant speed and at the same time reciprocally slide right and left. (16)
One rotation of the rotary case (21) allows two planting claws (1
7) Two seedlings are taken out according to (17) and the seedlings are continuously planted.

In the figure, (29) is a traveling speed change lever, (29a) is an auxiliary speed change lever, (30) is a planting elevating lever, (31) is a planting sensitivity adjusting lever, (31a) is a locking clutch lever, and (3a)
2) is a traveling clutch pedal, (33) and (33) are left and right brake pedals, (34) is a float for paddy leveling, and a planting case (20) via a planting depth adjustment link (35) etc. The float (34) is supported on the lower side.

As shown in FIGS. 1, 4 and 5, the vehicle body frame (3) is formed in a ladder-shaped chassis structure extending from the front end to the rear end of the traveling vehicle. The engine stand (38) with four rubber brackets (36) integrally fixed on the front side of the
Are bolted and fixed, and the engine (2) is bolted and fixed to the upper surface of the engine stand (38). On the other hand, the transmission case (4) is provided between transmission case brackets (39) integrally fixed to the rear side of the vehicle body frame (3) so as to be opposed to each other. The intermediate part is bolted and fixed to the bracket (39). A drive transmission shaft (40) is interposed between the engine (2) and the transmission case (4). A projecting piece (41) is formed to extend rearward from a right rear portion of the engine stand (38). The output shaft (4) of the engine (2) is connected to the projecting piece (41) via a bearing member (42) fixed by bolting.
3) is oscillated above the right end of the body frame (3), and the output shaft (43) and the input shaft (44) of the transmission case (4) are set.
To the both ends of the drive transmission shaft (40) via a universal joint (45), and within the lateral width of the vehicle body frame (3) and substantially upward from the front right end to the rear substantially middle. 40) is stretched between the vehicle body frames (3) in a laterally and vertically inclined manner.

A front bumper (46) is provided at the front end of the vehicle body frame (3), and a battery case (48) having a front side and an upper side opened for mounting a battery (47) is provided in the middle rear of the bumper (46). The engine stand (38)
Side plates (49) are integrally fixed on the upper surfaces on both sides of the body frame (3) on the front side, and the case is attached to the inner ends of the left and right first steel pipes (50) which are integrally fixed by penetrating through the middle part of the side plates (49). (Four
8) Both side walls are integrally fixed and the side plate (49)
The rear side of the case (48) is integrally fixed to an intermediate portion of a second steel pipe (51) which is fixed to the vehicle body frame (3) at the rear end. And replace the front bumper (46) with the case (48)
It is rotatably supported on a fulcrum shaft (52) that is mounted on the bottom surface of the bottom plate,
Both ends of the bumper (46) are connected to a side plate (49) via set bolts (53) so as to be freely opened and closed.

A front axle board (54) is stretched and fixed slightly to the front of the intermediate portion of the body frame (3), and the front axle (5) is provided below the board (54). ) Front and rear axle holders (55) and (55) are bolted and fixed to the lower surface of the front end intermediate portion and the lower surface of the rear end intermediate portion, and the front and rear flange portions (5a) and (5b) of the front axle (5) are Axle holder (55)
(55) is rotatably fitted and supported via a bush.
A second drive transmission is performed between the front end of the first output shaft (56) protruding from the front surface of the transmission case (4) and the input shaft (57) protruding from the rear flange portion (5b) of the front axle (5). Interlocking connection via shaft (58).

As is clear from the above, a pair of left and right body frames (3) (3) that are long in the front-rear direction are provided substantially in parallel, and the engine (2), the transmission case (4), and the front wheels (6) are provided.
(6) Front axle case (5) for mounting, and rear axle case (7) for mounting rear wheels (8) (8)
And a planting section (15) provided at the rear of the body frame (3) via a link mechanism (27). (3) The engine (2) is mounted between the front ends, and the transmission case (4) and the rear axle case (7), which are integrally connected, are fixed to the rear ends of the left and right body frames (3) and (3). (2) A front axle holder (55) for disposing a front axle case (5) below the left and right body frames (3) and (3), and supporting the front axle case (5) in a freely rolling manner.
(55) is attached to the lower surface of the body frame (3). Even when the large planting portion (15) is mounted, the front and rear balance can be maintained by the engine (2) by the engine (2), and the transmission case (4) is provided by using the rear axle case (7). (4) It is possible to simplify the mounting structure and improve the workability of attaching and detaching, and to provide the front and rear axle holders (55) and (55) on the body frame (3) to simplify the mounting structure of the front axle case (5). The case (5) is configured so as to improve the workability of attaching and detaching.

The front axle board (54) has a substantially square handle board (5
9) is formed so as to extend, and the front end of the board (59) is integrally fixed to a connecting pipe (60) that is horizontally fixed to the vehicle body frame (3) below the rear end of the engine stand (38). A reinforcing frame (61) is stretched and fixed between the connecting pipe (0) and the second steel pipe (51), and the handle board (5) is fixed.
The steering ring (62) is bolted and fixed to 9), the handle (14) is attached to the upper end, and the handle column (63) whose middle part is freely bendable is erected and fixed to the steering ring box (62). ing. Further, a support shaft (64) is fixed to the inclined upper end side of the reinforcing frame (61) by hanging, and a bracket (6) integrally fixed to the second steel pipe (51).
5), the middle of the support shaft (64) is penetrated and supported, and one end of a steering cylinder (66) is rotatably connected to the support shaft (64), and one end of each tie rod (67) of the front wheel (6). The piston rod (66a) of the cylinder (66) is pivotally connected to a steering arm (68) for connecting the cylinder rod (66).

A flange (69) is formed inside the final case (7a) of the rear axle case (7), and the rear axle case (7) is bolted to the rear end of the body frame (3) via the flange (69). While fixing
The front end of the rear axle case (7) is bolted and fixed to the rear surface of the transmission case (4), and the rear end of the first output shaft (56) of the transmission case (4) and the input shaft of the rear axle case (7) (not shown). And are linked in conjunction.

The planting device (15) is located on the back of the mission case (4).
The PTO shaft (70) that distributes the driving force to the motor is also protruded.

A pair of left and right reinforcing pipes (71) are stretched in a C-shape below the intermediate portion of the body frame (3), and the front ends of the pipes (71) are fixed to the front and rear axle holders (55) by bolts. With the rear axle case (7)
Bolts to the flange (69).

Further, both ends are integrally fixed to a gate-shaped rear frame (72) which is erected and fixed to the rear end of the vehicle body frame (3) and a vehicle body frame (3) on the front side of the transmission case (4). A pair of left and right elevating cylinder frames (75) are stretched and fixed in parallel with the third steel pipe (74) to be formed, and a cylindrical resin-made cushioning member (28b) is provided between the frames (75). Place the lifting cylinder (28) and frame (75)
An elevating cylinder (28) is pivotally attached to the intermediate bearing (76) via a fulcrum pin (77) projecting and fixed to both sides of the intermediate cylinder. Then, one end of the top link (25) is pivotally connected to a horizontal shaft (78) suspended between the inclined upper ends of the elevating cylinder frame (75), and both sides of the rear frame (72). The lower link (2) in which the lower end of the elevating arm (80) is integrally fixed to the cylindrical shaft (79)
One end of 6) is pivotally mounted on the shaft, and the tip of the piston rod (28a) of the lifting cylinder (28) is pivotally mounted on the upper end of the lifting arm (80).

The connecting pipe (75a) fixed horizontally to the lower end of the inclined cylinder frame (75) also has a bracket (7).
Fix the front side of the transmission case (4) with bolts via 5b).

A front support frame (8) is provided between the upper ends of the side bumpers (81), the lower portions of which are integrally fixed to the outer ends of the first steel pipes (50).
2) and the intermediate support frames (85) (86) to the body frame (3) between the front axle case (5) and the lifting cylinder frame (75) via brackets (83) (84).
A rear support frame (87) is horizontally fixed to the inclined upper end of the lifting cylinder frame (75), and a support pipe integrally fixed to the outside of the body frame (3) in front of the front axle case (5). Left and right support frames (89) are stretched between (88) and the end of the front support frame (82), and each frame (82) (86) (87)
Set pins (90) are planted on both upper surfaces of
As shown in the figure, a patch key (91) is attached to both sides of each of the frames (82) (86) (87) via a bracket (92).

As shown in FIG. 7, the vehicle body cover (12) is provided with a hole (12a) at the front side thereof for projecting the engine (2) and the steering handle (14), and through the hole (12a). The frame (82) (8
5) (86) (87) (89) It is mounted and supported on the upper surface, and the frame (82) (85) (86) is attached to the body cover (12).
(87) A circular recess (93) is formed at a position corresponding to (89), and a circular recess (95) having a position fixing hole (94) through which the set pin (90) passes is formed. A hook (96) for engaging the key (91) is appropriately fixed to the lower surface of the vehicle body cover (12), and the vehicle body cover (12) is detachably mounted on the upper surface side of the vehicle body frame (3).

The hood (9) is attached to the hole (12a) of the vehicle body cover (12).

A step (97) for riding is provided outside the body cover (12) between the front wheel (6) and the rear wheel (8), and the step (97) is provided outside the intermediate portion support frame (86) and the body frame (3). The support arm (98) of the step (97) is integrally fixed.

The brake pedals (33) and (33) are supported by a pedal shaft (99) inserted into the third steel pipe (74), while the traveling clutch pedal (32) is a side plate on which the third steel pipe (74) is mounted. (73) Inner shaft (100) outer cylinder (10
Supported by 1).

As described above, the engine (2), a steering device having a steering handle, a front axle case (5), a transmission case (4), a rear axle case (7), a lifting cylinder (28), a three-point link mechanism (27), Body cover (1
2) and hood (9) etc. to the body frame (3)
And a traveling vehicle (1), and a driving force of an engine (2) on a front side of a vehicle body frame (3) is transmitted from a transmission case (4) on a rear side of the vehicle body frame (3) to a front axle case (5). It is distributed to the rear axle case (7) and the planting device (15).

[Effects of the Invention] As is clear from the above embodiments, the present invention provides a pair of left and right body frames (3) and (3) which are long in the front-rear direction and are substantially parallel to each other. )When,
A front axle case (5) for mounting front wheels (6) and (6) and a rear axle case (7) for mounting rear wheels (8) and (8) are arranged on the body frame (3). 3) Link mechanism at the rear (27)
In a rice transplanter having a planting section (15) installed through the engine, the engine (2) is located between the front ends of the left and right body frames (3) (3).
The transmission case (4) and the rear axle case (7) with the
(3) The front axle case (5) is fixed to the rear end, and a front axle case (5) is disposed below the left and right body frames (3) (3) below the engine (2). Axle holder (5
5) Reinforcement pipe (71) that attaches (55) to the lower center of the left and right body frames (3) via the front axle board (54) and connects the rear end to the rear axle case (7).
(71) The front end is fixed to the axle holder (55) (55). Compared to the conventional structure in which the engine is mounted in the middle of the body frame, the engine (2) can be mounted even when the large planting portion (15) is mounted. The rear axle case (7) is used to provide a transmission case (4), which simplifies the mounting structure of the case (4) and improves the workability of attachment / detachment. The front axle holders (55) and (55) are provided on the body frame (3), and the rear axle case (7) is provided with reinforcing pipes (71) arranged side by side with the body frame (3). Since the axle holder (55) is connected, the mounting of the front axle case (5), the simplification of the reinforcing structure, and the ease of attaching and detaching the case (5) can be easily performed. You can do it.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a traveling vehicle unit according to the present invention, FIG. 2 is a side view of a riding rice transplanter, FIG. 3 is a plan view thereof, and FIG.
FIG. 5 is a side view of the figure, FIG. 5 is a sectional view of the same, FIG. 6 is a view of mounting the vehicle body cover, and FIG. 7 is a plan view of the vehicle body cover. (2) ... engine (3) ... body frame (4) ... mission case (5) ... front axle case (6) ... front wheel (7) ... rear axle case (8) ... rear wheel (15) ) Planting part (27) Link mechanism (55) Axle holder

Claims (1)

(57) [Claims] A pair of left and right body frames (3) (3) which are long in the front-rear direction are provided substantially in parallel, and an engine (2), a transmission case (4), and front wheels (6) (6) are mounted. A front axle case (5) and a rear axle case (7) for mounting rear wheels (8) and (8) are arranged on the body frame (3), and a link mechanism (27) is provided at the rear of the body frame (3). The transmission case (4) and the rear axle, in which the engine (2) is mounted between the front ends of the left and right body frames (3) (3) in the rice transplanter having the planting portion (15) The case (7) is fixed to the rear ends of the left and right body frames (3) and (3).
A front axle case (5) is disposed below the left and right body frames (3) (3) behind the engine (2), and a front and rear axle holder (55) (55) for rotatably supporting the front axle case (5). ) Is attached to the lower center of the left and right body frame (3) via the front axle board (54),
A reinforcing pipe (71) for connecting a rear end to the rear axle case (7) and a front end for the axle holder (55)
A rice transplanter fixed to (55).