JP2001128514A - Sulky rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To devise the simplification of the structure of a travel vehicle (1), the reduction of the production cost, and so on by forming the vehicle body from lower rigid materials than those of conventional vehicle bodies. SOLUTION: This sulky rice transplanter in which a planting section (15) is liftably disposed behind a travel vehicle (1) and in which front and rear wheels (6), (8) are mounted through front and rear axle cases (5), (7), characterized in that the front and rear axle cases (5), (7) for attaching the front and rear wheels (6), (8) thereto are linked to each other through four frames (3), (71) which are arranged in one pair in the lateral direction and in two pairs in the vertical direction.

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]

SUMMARY OF THE INVENTION The present invention provides a riding type rice transplanter in which a planting portion is mounted on the rear of a traveling vehicle so as to be able to move up and down and front and rear wheels are mounted via front and rear axle cases. The axle case to which the front and rear wheels are attached is connected by four pairs of left and right, upper and lower, two sets of four frames, and the middle of the upper frame is deformed vertically by the operator who sits on the driver's seat or the heavy load of the planting part etc. This can be easily prevented by the lower frame, and the vehicle body can be formed of a material having lower rigidity than in the related art, so that the traveling vehicle structure can be simplified and the manufacturing cost can be easily reduced.

The lower frame (71) is disposed at a position substantially equal to or higher than the ground height of the axle of the front wheel (6) and the axle of the rear wheel (8). Raising the ground clearance can easily prevent mud pushing etc. by the lower frame (71) in Fukada, and the lower frame etc. touches the mud surface before planting and disturbs the rice field, or the mud adheres to the lower frame In this way, it is possible to easily eliminate problems such as the formation of a soil mass, and to easily improve rice planting workability.

Further, an upper frame (87) for supporting the step-formed plate (12) on the rear side of the driver's seat (13) is fixed at a high position behind the upper frame (3), and the upper and lower frames (3) (71) are fixed. ) And the upper frame (8
7) Since both end portions are extended, the mounting strength of the step-formed plate-like body (12) whose lateral width is increased with the increase in the size of the multi-row plantation can be easily secured by the support of the upper frame (87), It is possible to easily expand a work space for supplying seedlings of the planting section (15).

[0007]

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).

[0008] Further, in the figure, (15) is a planting section 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.

A supporting frame (24) is provided on the front side of the planting case (20) via a pivot shaft (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 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).
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 an intermediate portion of the vehicle 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 stand. (38) A reinforcing frame (61) which is integrally fixed to a connecting pipe (60) which is horizontally fixed to a vehicle body frame (3) below a rear end, and is further provided between the connecting pipe (6) 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 the 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 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) are mounted on the rear upper surfaces of a pair of left and right body frames (3).
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 reinforcing pipe (71), which is a pipe member having substantially the same length as the installation interval, is provided. (5) The (7) is connected, and the reinforcing pipe (71) is provided below the vehicle body frame (3) substantially parallel to the vehicle body frame (3) in a side view. The reinforcing pipe (71) prevents the middle of the body frame (3) from being bent vertically by an operator sitting on the driver's seat (13) or the weight load of the planting portion (15), The body frame (3) is made of a material having a lower rigidity than before so as to simplify the structure of the traveling vehicle (1) and reduce the manufacturing cost, and utilize the space between the body frame (3) and the reinforcing pipe (71). And the second drive transmission shaft (58), which is the traveling transmission shaft
And the like to reduce the ground height of the vehicle body frame (3).

The reinforcing pipe (71) as the lower frame is disposed at a position substantially equal to or higher than the ground height of the axle of the front wheel (6) and the axle of the rear wheel (8). Increase the ground clearance at the bottom to increase the reinforcement pipes at Fukada (7
1) Prevents mud pushing and the like, and eliminates the problem that the reinforcing pipe etc. comes into contact with the mud surface before planting and disturbs the rice field, or the problem that mud adheres to the reinforcing pipe to form a soil mass, etc. To improve

Also, 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, a hole (12a) for projecting the engine (2) and the steering handle (14) is formed on the front side of the vehicle body cover (12).
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).

As described above, the rear support frame (87), which is the upper frame for supporting the rear of the vehicle body cover (12), which is a step-formed plate-like body on the rear side of the driver's seat (13), is connected to the body frame ( 3) The rear support frame (87) is fixed at a rear high position, and both ends of the rear support frame (87) extend in the left-right direction crossing the body frame (3) and the reinforcing pipe (71). The mounting strength of the rear portion of the vehicle body cover (12), which is widened, is secured by the support of the rear support frame (87), and the working space for replenishing seedlings in the planting portion (15) is expanded.

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).

[0030]

As is apparent from the above embodiments, the present invention provides a planting portion (15) at the rear of a traveling vehicle (1) so as to be able to move up and down, and a front and rear axle case (5) (7). In a riding type rice transplanter having front and rear wheels (6) and (8) mounted thereon, the axle cases (5) and (7) for mounting the front and rear wheels (6) and (8) are four pairs of right and left and two pairs of upper and lower frames. (3) Connected by (71), the driver's seat (1
The lower frame (71) can easily prevent the middle part of the body frame (3) from being deformed in the vertical direction due to the weight load of the worker sitting on the part (3) or the planting part (15). By using a rigid material, the structure of the traveling vehicle (1) can be simplified and the manufacturing cost can be easily reduced.

The lower frame (71) is disposed at a position substantially equal to or higher than the ground height of the axle of the front wheel (6) and the axle of the rear wheel (8). Raising the ground clearance can easily prevent mud pushing etc. by the lower frame (71) in Fukada, and the lower frame etc. touches the mud surface before planting and disturbs the rice field, or the mud adheres to the lower frame. This makes it possible to easily eliminate problems such as the formation of soil lumps, and to easily improve rice planting workability.

The upper frame (87) for supporting the step-formed plate (12) on the rear side of the driver's seat (13) is fixed at a high position behind the upper frame (3), and the upper and lower frames (3) (71) are fixed. ) And the upper frame (8
7) Since the both ends are extended, the mounting strength of the step-formed plate-like body (12), which is widened in the lateral direction with the increase in the size of the multi-row plant, can be easily secured by the support of the upper frame (87). It is possible to easily expand a work space for supplementing seedlings in the attachment section (15).

[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) Running vehicle (3) Body frame (upper frame) (5) Front axle case (6) Front wheel (7) Rear axle case (8) Rear wheel (12) Body cover (step-formed plate) (13) Driving Seat (15) Planting part (71) Reinforcement pipe (lower frame) (87) Rear support frame (upper frame)

Claims (3)

[Claims] 1. A riding type rice transplanter in which a planting portion is mounted on a rear side of a traveling vehicle so as to be able to move up and down, and front and rear wheels are mounted via front and rear axle cases. A riding rice transplanter characterized by being connected by two sets of four upper and lower frames. 2. The riding type rice transplanter according to claim 1, wherein the lower frame is disposed at a position substantially equal to or higher than the ground height of the front wheel axle and the rear wheel axle. 3. An upper frame for supporting a step-formed plate-shaped body on the rear side of a driver's seat is fixed at a high position at a rear portion of the upper frame, and both ends of the upper frame extend in a left-right direction crossing the upper and lower frames. Riding rice transplanter.