JP3118715B2 - Riding rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planting apparatus for removing seedlings of one strain from a seedling table which is reciprocated right and left by a planting claw and planting the same in a field. The present invention relates to a riding type rice transplanter connected via a cylinder.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Patent Application Laid-Open No. 61-232926, a planting portion is provided at the back of a traveling vehicle so as to be able to move up and down, and a long left and right body frame is provided on the traveling vehicle in the front-rear direction. There is a technique in which front and rear wheels are mounted below the vehicle body frame via an axle case, and a driver's seat is provided above a front and rear width middle of the vehicle body frame.

[0003]

According to the prior art, a deformation force in which an intermediate portion of a vehicle body frame is bent downward due to a heavy load of an operator sitting in a driver's seat or the like is easily generated. It is necessary to prevent the lower traveling transmission shaft from being pulled back and forth, and therefore, it is necessary to form the body frame into a highly rigid structure. In addition, a lifting cylinder for raising and lowering the planting portion is provided on the lower side of the body frame,
Further, since the traveling power transmission shaft is provided on the lower side, there are disadvantages that the ground height of the vehicle body frame cannot be easily reduced, and that the ridges come into contact with the lifting cylinder or the traveling power transmission shaft and that straw grass is easily wound. In addition, since the link mechanism and the lifting cylinder that support the planting portion are disposed above and below the body frame,
There is a problem that the mounting positions of the lifting cylinder and the traveling transmission shaft are easily limited to each other, and it is not easy to simplify the traveling vehicle structure and make it compact and to simplify the planting portion support structure.

[0004]

According to the present invention, there is provided a vehicle body comprising: a planting portion provided on a rear side of a traveling vehicle so as to be able to move up and down; In a riding type rice transplanter in which the front and rear wheels are mounted on the lower side via an axle case, and a driver's seat is provided above the middle of the front and rear width of the body frame, a pipe member having substantially the same length as the axle case installation interval for mounting the front and rear wheels is provided. The pipe member is connected at both ends to a vehicle body frame. The pipe member is provided below the vehicle body frame substantially parallel to the vehicle body frame in a side view, and surrounds a lower surface side of an axle case that is rotatably mounted to the vehicle body frame. The end of the pipe member is formed to be curved downward, and the pipe member is connected to the body frame on the front and rear sides of the axle case. The middle part of the body frame can be easily prevented from being deformed downward by the weight load of the user by the pipe member, and the body frame is made of a material with lower rigidity than the conventional one, so that the running vehicle structure can be simplified and the manufacturing cost can be reduced easily. In addition, the drive shaft can be arranged by utilizing the space between the body frame and the pipe member, and the height of the body frame above ground can be easily reduced. Since it is surrounded by the body frame and the pipe member, it is possible to easily prevent an excessive rolling operation of the axle case, and to increase the height of the ground between the pipe members with respect to the portion surrounding the lower surface of the axle case, such as a ridge. Can be easily prevented.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory plan view of a traveling section, FIG. 2 is a side view of a riding rice transplanter, and FIG. 3 is a plan view of the same, wherein (1) is a traveling vehicle on which an operator rides, and an engine ( A transmission case (4) is mounted on the rear side of the vehicle body frame (3) on which the 2) is mounted on the front side, and paddy field running front wheels (6) are mounted on both rear sides of the engine (2) via a front axle case (5). At the same time, the rear wheels (8) for paddy field traveling are supported on both rear sides of the transmission case (4) via rear axle cases (7). Then, a spare seedling mount (10) is appropriately attached to both sides of the hood (9) covering the engine (2), and a step (11) is carried out.
The axle cases (5), (7) and the like are covered by a vehicle body cover (12) forming a vehicle, and a driver's seat (1) is provided above the vehicle body cover (12) above the transmission case (4).
3) is mounted, and a steering handle (14) is provided in front of the driver's seat (13) and behind the hood (9).

[0006] Further, in the figure, (15) is a planting portion having a seedling mounting table (16) for multiple planting and a plurality of planting claws (17). The rotary case (21) that supports the seedling mounting table (16) of the planting case (20) via a guide rail (18) and a guide rail (19) so as to be reciprocally slidable left and right and rotates at a constant speed in one direction. )
Is supported by the planting case (20), and the case (2)
Claw cases (22) and (22), which are a pair of planting arms, are disposed at symmetric positions about the rotation axis center of 1), and planting claws (17) and (17) are provided at the tip of the claw case (22). Attach.

[0007] A supporting frame (24) is provided on the front side of the planting case (20) via a pivot (23).
A support frame (24) is connected to the rear side of the traveling vehicle (1) via a three-point link mechanism (27) including a top link (25) and a lower link (26).
The traveling vehicle (1) is provided with an elevating cylinder (28) for elevating and lowering the planting section (15) via 7), and the front and rear wheels (6) are provided.
(8) is driven to move at a substantially constant speed, and at the same time, two planting claws (17) and (17) are rotated from the seedling mounting table (16) reciprocating left and right by one rotation of the rotary case (21). Thus, two seedlings are taken out, and a seedling planting operation is continuously performed.

In the figure, (29) is a traveling speed change lever,
(29a) is a sub speed change lever, (30) is a planting elevating lever, (31) is a planting sensitivity adjusting lever, (31a) is a stop clutch lever, (32) is a traveling clutch pedal,
(33) and (33) are left and right brake pedals, (34)... Are floats for paddy leveling, and a planting depth adjustment link (3)
The float (34) is supported below the planting case (20) via 5) or the like.

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. Four corners of the engine stand (38) are fixed to four engine brackets (36) integrally fixed on the front side of (3) by bolting the vibration-proof rubber (37) therebetween. Secure the engine (2) with bolts. On the other hand, a transmission case bracket (39) integrally fixed to the rear side of the body frame (3) so as to face each other.
The transmission case (4) is arranged in between, and front and rear and upper and lower intermediate portions are fixed to the bracket (39) by bolts on both side surfaces of the transmission case (4). A drive transmission shaft (40) is provided between the engine (2) and the transmission case (4).
A protruding piece (41) is formed to extend rearward from the right rear portion of the vehicle, and an output shaft (43) of the engine (2) is connected to a body frame (42) via a bearing member (42) fixed to the protruding piece (41) by bolts. 3) and the universal joint (4) is connected to the output shaft (43) and the input shaft (44) of the transmission case (4).
5), the both ends of the drive transmission shaft (40) are connected to each other, and the drive transmission shaft (40) is moved right and left within the left-right width of the vehicle body frame (3) and substantially upward from the front right end to the rear middle. And, it is stretched between the body frames (3) in a vertically inclined manner.

A front bumper (46) is provided at the front end of the body frame (3), and the front bumper (4) is provided.
A battery case (48) having an open front side and an upper side for mounting a battery (47) is provided in the middle rear of 6).
The body frame (3) on the front side of the engine stand (38)
Side plates (49) are integrally fixed on the upper surfaces on both sides.
The side walls of the case (48) are integrally fixed to the inner ends of the first left and right steel pipes (50), which are integrally fixed by penetrating through the intermediate portion of (9), and the rear end of the side plate (49) The rear side of the case (48) is integrally fixed to an intermediate portion of the second steel pipe (51) fixed horizontally to the frame (3). The front bumper (46) is rotatably supported on a fulcrum shaft (52) that is mounted on the lower surface of the bottom plate of the case (48), and both sides of the bumper (46) are openably and closably set bolts (5).
3) to the side plate (49).

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) on the lower surface of the front middle portion and the lower surface of the rear middle portion of the board (54)
The front axle (5) is bolted and fixed so that the front and rear flange portions (5a) and (5b) of the front axle (5) are rotatably fitted to the axle holders (55) and (55) via bushes. Supported. 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 (5b) of the front axle (5). Shaft (5
8) Linked interlocking.

As described 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)
Is disposed on the vehicle body frame (3), and a planting portion (15) is mounted on a rear portion of the vehicle body frame (3) via a link mechanism (27). Also, the engine (2) is mounted between the front ends of the left and right body frames (3) and (3), and the transmission case (4) and the rear axle case (7), which are integrally connected, are located behind the left and right body frames (3) and (3). Front and rear axles that are fixed to the ends and front axle cases (5) are arranged below the left and right body frames (3) and (3) behind the engine (2), and the front axle case (5) is supported in a freely rolling manner. Holder (55) (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 attachment and detachment, 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.

A substantially square handle board (59) extends forward and upward from the middle of the front end of the front axle board (54), and the front end of the board (59) is mounted on the engine mount. (38) A reinforcing frame (61) which is integrally fixed to a connecting pipe (60) horizontally fixed to a vehicle body frame (3) below a rear end, and is further provided between the connecting pipe (0) and the second steel pipe (51). A steering column (62) is bolted and fixed to the handle substrate (59), and the handle (14) is attached to the upper end to form a handle column (63) whose middle part is bendable. It is erected and fixed to the steering box (62). Further, a support shaft (64) is fixed to the inclined upper end side of the reinforcing frame (61) by hanging down, and a bracket (65) integrally fixed to the second steel pipe (51) penetrates and supports the middle of the support shaft (64). Then, one end of a steering cylinder (66) is rotatably connected to the support shaft (64), and the cylinder (66) is connected to a steering arm (68) for connecting one end of each tie rod (67) of the front wheel (6). 66)
Of the piston rod (66a).

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

A PTO shaft (70) for distributing the driving force to the planting device (15) also projects from the rear surface of the transmission case (4).

A pair of left and right reinforcing pipes (71) are stretched in a C-shape below the middle part of the body frame (3), and the front ends of the pipes (71) are bolted to the front and rear axle holders (55). At the same time, the rear end is bolted and fixed to the flange (69) of the rear axle case (7).

Further, a gate-shaped rear frame (72) which is erected and fixed to the rear end of the vehicle body frame (3), a transmission case (4) a front side vehicle body frame (3) and side plates (7) on both sides.
A pair of left and right cylinder frames (75) are stretched and fixed in parallel between the third steel pipe (74) having both ends integrally fixed to the third piece (3), and a synthetic resin cylindrical shape is provided between the frames (75). The elevating cylinder (28) having the cushioning member (28b) is arranged, and a fulcrum pin (77) is provided on the bearing (76) in the middle of the frame (75) so as to protrude and fix the elevating cylinder (28) on both sides of the middle. It is pivoted freely. Then, one end of the top link (25) is pivotally connected to a horizontal shaft (78) suspended between the inclined upper ends of the cylinder frame (75), while being attached to both sides of the rear frame (72). One end of the lower link (26) for integrally fixing the lower end of the elevating arm (80) to the provided cylindrical shaft (79) is swingably mounted on the shaft, and the elevating cylinder is mounted on the upper end of the elevating arm (80). (28) piston rod (28
a) The tip is pivotally pivoted. In addition, traveling car (1)
A planting part (15) is mounted on the rear side of the vehicle so as to be able to move up and down, and an engine (2), a driver's seat (13) and a steering handle ( 14)
The link mechanism (27) for supporting the planting portion (15) is connected to the rear of the body frame (3), and the lifting cylinder (28) is attached to the front body frame (3). To the link mechanism (27)
Using the space between the body frame (3) and the driver's seat (13), an elevating cylinder (28) is installed above the body frame (3) on the longitudinal center line of the body, and the elevating cylinder (2) is installed.
8) Simplification of the protection and muddy water adhesion prevention structure, simplification of the connection structure between the lifting cylinder (28) and the link mechanism (27), and securing of rigidity.

The planting section (1) is provided on the rear side of the traveling vehicle (1).
5) and the front and rear wheels (6)
In a riding type rice transplanter in which an engine (2), a driver's seat (13), and a steering handle (14) are arranged on a traveling vehicle (1) having (8), the traveling vehicle (1) is extended in the front-rear direction. A rear frame (72) as a mounting member and a cylinder frame (7)
5), the driver's seat (13) is arranged above the rear frame (72) and the cylinder frame (75), and the link mechanism ( 27), the planting part (15) is connected thereto, and the engine (2), the transmission case (4), the front axle case (5), and the rear axle case (7).
Are mounted on the body frame (3) at different positions in the front-rear direction, and the mounting structure of the engine (2), the transmission case (4), the front axle case (5), and the rear axle case (7) is simplified. It is possible to easily reduce the mounting width in the vertical direction, simplify the mounting structure of the planting portion (15), improve the balance in the front-rear and left-right directions of the vehicle (1), and maintain the center of gravity of the vehicle (1). Decrease, etc. The lifting cylinder frame (75)
The front side of the transmission case (4) is also fixed by bolts via a bracket (75b) to a connecting pipe (75a) that is fixed horizontally to the lower end of the transmission pipe.

As is apparent from the above description, the planting portion (15) is provided at the rear of the traveling vehicle (1) so as to be able to move up and down.
A left and right body frame (3) which is long in the front-rear direction is provided on the traveling vehicle (1), and front and rear wheels (6) (8) are provided below the body frame (3) via front and rear axle cases (5) (7). ), And a front and rear axle case (5) (7) in which a front and rear wheel (6) (8) is mounted in a riding type rice transplanter in which a driver's seat (13) is provided above the vehicle body frame (3). A) A reinforcing pipe (71), which is a pipe member having substantially the same length as the installation interval, is provided, and both ends of the reinforcing pipe (71) are connected to the vehicle body frame (3). The reinforcing pipe (71) is provided substantially parallel to the body frame (3), and the end of the reinforcing pipe (71) is formed in a shape surrounding the lower surface side of the front axle case (5) which is rotatably mounted on the body frame (3). On the lower side And music forming, linking the reinforcing pipe (71) before and after side of the front axle case (5) to the vehicle body frame (3). And the driver's seat (13)
The middle part of the vehicle body frame (3) is prevented from being deformed downward by the weight load of an operator who sits on the vehicle by the reinforcing pipe (71), and the vehicle body frame (3) is formed of a material having lower rigidity than the conventional one. (1) To simplify the structure and reduce the manufacturing cost, and to utilize the space between the vehicle body frame (3) and the reinforcing pipe (71) to provide a second driving transmission shaft.
The drive transmission shaft (58) and the like are arranged, and the body frame (3)
Of the front axle case (5), which can be freely rolled, is surrounded by the body frame (3) and the reinforcing pipe (71) to prevent excessive rolling operation of the front axle case (5). The front axle case (5)
The height of the ground above the middle of the reinforcing pipe (71) with respect to the area surrounding the lower surface is increased to prevent collision with ridges and the like.

Further, a front support frame (82) is provided between upper ends of side bumpers (81) integrally fixed at the outer ends of the left and right first steel pipes (50), and a front axle case (5) and an elevating cylinder frame are provided. Intermediate support frames (85) and (86) via the brackets (83) and (84) on the body frame (3) between (75) and a rear support frame (87) on the inclined upper end of the elevating cylinder frame (75).
And a support pipe (88) integrally fixed to the outside of the front body frame (3) outside the front axle case (5) and the front support frame (82) side end. Left and right support frames (89) are stretched, set pins (90) are implanted on both upper surfaces of the frames (82), (86) and (87), and a patch key (91) is inserted as shown in FIG. The frames (82), (86), and (87) are mounted on both sides of the frames (82) via brackets (92).

As shown in FIG. 7, the vehicle body cover (12) has a hole (12a) at the front side thereof for projecting the engine (2) and the steering handle (14).
Each frame (82) (85) (86) (87) (89) from above the body frame (3) through the hole (12a).
The frame is supported on the upper surface, and the frames (82) (85) (86) (87) (8)
A circular recess (93) is formed at a position corresponding to (9), a circular recess (95) having a position fixing hole (94) through which the set pin (90) passes is formed, and the patch key (91) is further formed. The hook (96) for engaging the vehicle body (12) 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 hole (12) of the vehicle body cover (12)
The bonnet (9) is attached to a).

A step (97) for riding is provided outside the vehicle body cover (12) between the front wheel (6) and the rear wheel (8). The intermediate support frame (86) and the vehicle body frame (3) are provided. On the outside, the support arm (9
8) is integrally fixed.

The brake pedals (33) and (33)
Is supported by a pedal shaft (99) inserted into the third steel pipe (74), while the traveling clutch pedal (32) is fixed horizontally across a side plate (73) for mounting the third steel pipe (74). It is supported by the outer cylinder (101) of the shaft (100).

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 ( 2
7), a body cover (12), a hood (9) and the like are mounted on the body frame (3) to constitute a traveling vehicle (1), and the driving force of the engine (2) on the front side of the body frame (3) is reduced. The transmission is distributed from the transmission case (4) on the rear side of the frame (3) to the front axle case (5), the rear axle case (7) and the planting device (15).

[0026]

As is apparent from the above embodiments, the present invention provides a planting section (15) at the rear of a traveling vehicle (1) so as to be able to move up and down, and a left and right body frame ( 3) is provided on the traveling vehicle (1), and the vehicle body frame (3) is provided.
A riding type rice transplanter in which front and rear wheels (6) and (8) are installed on the lower side via axle cases (5) and (7), and a driver's seat (13) is provided above the body frame (3) in the front and rear widths. Axle cases (5), (7) to which the front and rear wheels (6), (8) are attached;
And both ends of the pipe member (71) are connected to the vehicle body frame (3), and the pipe member (71) is provided below the vehicle body frame (3) in substantially parallel with the vehicle body frame (3) in a side view. The end of the pipe member (71) is formed so as to be curved downward so as to surround the lower surface side of the axle case (5), which is rotatably attached to the vehicle body frame (3). The member (71) is connected to the body frame (3), and the driver's seat (13)
The pipe member (71) can easily prevent the middle of the body frame (3) from being deformed downward due to the weight load of an operator who sits on the vehicle body, and the body frame (3) is formed of a material having lower rigidity than before. The structure of the traveling vehicle (1) can be simplified and the manufacturing cost can be easily reduced, and the traveling transmission shaft (58) and the like are arranged using the space between the body frame (3) and the pipe member (71). Axle case (5) that can be easily mounted and can be rolled freely while reducing the ground height of the body frame (3).
Since the upper and lower surfaces are surrounded by the body frame (3) and the pipe member (71), excessive rolling operation of the axle case (5) can be easily prevented, and the lower surface of the axle case (5) is surrounded. The height of the ground in the middle of the pipe member (71) with respect to the part can be increased to easily prevent collision with a ridge or the like.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a traveling vehicle unit.

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

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory side view of FIG. 1;

FIG. 5 is an explanatory sectional view of the same.

FIG. 6 is an explanatory view of mounting a vehicle body cover.

FIG. 7 is an explanatory plan view of the vehicle body cover.

[Explanation of symbols]

 (1) Vehicle (3) Body frame (5) Front axle case (6) Front wheel (7) Rear axle case (8) Rear wheel (13) Driver's seat (15) Planting part (71) Reinforcement pipe (pipe member)

Claims (1)

(57) [Claims] 1. A vehicle body (1) having a left and right body frame (3) elongated in the front-rear direction while a planting portion (15) is mounted to be movable up and down behind the vehicle (1). Front and rear wheels (6) and (8) are installed below the body frame (3) via axle cases (5) and (7), and a driver's seat (13) is provided above the body frame (3) in the front and rear width direction. In the riding type rice transplanter, the axle cases (5) and (7) for mounting the front and rear wheels (6) and (8) are provided with a pipe member (71) having substantially the same length as the installation interval, and both ends of the pipe member (71) are An axle that is connected to the vehicle body frame (3), and the pipe member (71) is provided below the vehicle body frame (3) and substantially parallel to the vehicle body frame (3) in a side view, and is rotatably mounted to the vehicle body frame (3). A pipe member (a shape surrounding the lower surface of the case (5)) 71) A riding type rice transplanter characterized in that an end is curved downward and a pipe member (71) is connected to a vehicle body frame (3) at front and rear sides of the axle case (5).