JP2002337553A - Rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling efficiency of an engine 36, and install the engine low, and lower down the center of gravity of a machine body. SOLUTION: This rice transplanter is provided with a front/rear wheel 5, 6, an engine 36, and a driver's seat 7, in a right/left main frame 16, and the rice transplanter is characterized by forming an installation width of the right/ left main frame 16 larger than a lateral width of the engine 36 and lapping a lower part of the engine 36 with the main frame 16 as viewed by side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter for continuously planting rice by mounting a planting section having a seedling mounting table and a planting claw on a traveling vehicle.

[0002]

Conventionally, when the front and rear wheels, the engine and the driver's seat are mounted on the main frame, the engine is mounted on the upper side of the main frame.
The hot air around the engine is not discharged to the lower side due to the blockage of the main frame, and there is a problem that the engine is not cooled efficiently, and the mounting dimensions of the engine and the main frame in the vertical direction are not easily reduced. There is a problem that the total height of the mounting portion cannot be easily reduced. In addition, since the left and right mounting widths of the left and right anti-vibration members for supporting the engine are limited, the vibration of the engine transmitted to the left and right main frames in the torsion direction of the machine (around the longitudinal centerline of the machine) can be easily reduced. In addition, there is a problem that the weight of the main frame cannot be easily reduced by reducing the thickness of the main frame (reducing the cross-sectional area where the strength of the main frame decreases).

[0003]

SUMMARY OF THE INVENTION The present invention provides a rice transplanter having front and rear wheels, an engine, and a driver's seat mounted on the left and right main frames, wherein the width of the left and right main frames is set to be larger than the left and right widths of the engine. The main frame is wrapped around the lower part of the engine from the side, ensuring ventilation space between the left and right main frames and both sides of the engine to allow smooth discharge of hot air around the engine and improve engine cooling efficiency. In addition, the engine can be installed low to easily lower the machine body weight.

In addition, both sides of a frame member to which an anti-vibration member for supporting the engine can be attached are fixed to the left and right main frames. The strength of the main frame can be reduced by reinforcing the frame members to reduce the weight of the main frame. The high rigidity frame structure can support the engine with anti-vibration, and the interval between the left and right anti-vibration members can be expanded to easily reduce the engine vibration transmitted in the torsion direction of the machine, simplifying the body structure and preventing engine The vibration function can be easily improved.

Further, since the transmission case is fixed to the frame member, the strength of the frame member can be easily secured against the vertical vibration of the engine. Therefore, the rigidity of the frame member in the torsion direction of the machine can be improved, and the engine support structure can be simplified and lightened easily.

The frame member and the transmission case are fixed substantially at the center of the mounting width of the left and right anti-vibration members.
The strength of the frame member can be easily secured by fixing it to the transmission case against any torsional deformation force generated in the left and right direction due to engine vibrations, etc., preventing deformation damage of the frame member and easily improving durability etc. It is possible.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall side view, and FIG. 2 is a plan view of the same. A planting section 3 is mounted on a rear side of a traveling vehicle 1 via a link mechanism 2 so as to be able to move up and down, and is planted by the planting section 3. A side-strip fertilizer applicator 4 for burying fertilizer beside the seedlings is mounted on the rear upper surface of the traveling vehicle 1. The front and rear wheels 5, 6, a driver's seat 7, and a steering handle 8 are provided on the traveling vehicle 1. The front and rear wheels 5 and 6 are disposed below the step 9 for forming the steering wheel, the steering handle 8 is disposed on the rear side of the bonnet 10 on the front side of the step 9, and the driver's seat 7 is disposed on the upper surface on the rear side of the step 9. Also, the seedling mounting table 11 and the planting claws 12 for the five-row planting are attached to the planting section 3.
The rice planting work for continuously planting five rows of seedlings is performed, and the blower 13 blows the soil into the soil beside the five rows of seedlings via the transfer hose 14 for five rows. The fertilizer is sent from the fertilizer applicator 4 to embed the fertilizer, and at the same time, the spare seedlings of the spare seedling stand 15 on the side of the bonnet 10 are replenished to the seedling placing stand 11 so that the rice transplanting work is continued.

Further, as shown in FIGS. 3 to 15, a pair of left and right main frames 16 are provided on the traveling vehicle 1, and the front frame 17, the middle frame 18, and the rear frame 19 are connected in a substantially linear shape in a plan view. A frame 16 is formed, a gate-shaped frame 20 is fixed to the rear side of the left and right rear frames 19, and a front bumper 22 for mounting a center marker 21 and a towing hook 23 are fixed to the front sides of the left and right front frames 17. A pair of left and right step tables 2 is provided on the outside of the front and rear portions and on the outside of the front portion of the rear frame 19.
4. 25 and 26 are fixed, a long step table 27 is fixed to the entire width in the left-right direction above the middle part of the rear frame 19, and a pair of left and right step tables 28 is fixed to the upper part of the gate-shaped frame 20. A horizontal frame 30 having a table 29 is provided. The outside of each step table 24 to 26 is connected by a front side frame 31, and a rear side frame 32 is provided.
Each of the steps 26 and 27 and the horizontal frame 30
The outside is connected, and the step 9 is mounted on and fixed to the upper surface of each of the step tables 24 to 29, and the step 33 for getting on and off the vehicle is removably bolted and fixed to the outside of the rear side frame 32.

Further, as shown in FIG. 4, a pair of left and right receiving stands 34 and a frame member 35 are fixed to the left and right front frames 17 to mount an engine 36, and as shown in FIG.
The left and right front axle cases 38 are fixed to both sides of the transmission case 37, the front wheels 5 are mounted on each case 38, and the middle frame 1 for connecting the front and rear frames 17 and 19.
8 is fixed to the upper side of the case 38. A hydraulic stepless transmission case 39 for transmitting the output of the engine 36 to the transmission case 37, and a steering case 40 composed of a torque generator and a gear mechanism for amplifying the steering force of the front wheel 5 of the steering wheel 8 are fixed to the front side of the transmission case 37. At the same time, the rear axle case 42 is fixed to the rear side of the transmission case 37 via the body case 41, both sides of the portal frame 20 are fixed to the case 42, and the rear wheel 6 is mounted on the case 42. A hydraulic lifting cylinder 43 is mounted on the upper side of the machine case 41,
The piston of the cylinder 43 is connected to the link mechanism 2 that allows the cylinder 43 to move up and down.

Further, as shown in FIGS. 4 and 9, both ends of the tank base frame 44 are fixed to the front sides of the left and right rear frames 19, and the front part of the fuel tank 45 for supplying fuel to the engine 36 is fixed to the base frame 44. And left and right rear frames 19
A tank 45 is installed in between, and as shown in FIG. 3, a seat frame 46 is erected on the rear frame 19, and the driver's seat 7 is mounted on the upper side of the seat frame 46 via a seat table 47. The driver's seat 7 is arranged above. Further, a muffler 49 of the engine 36 is attached via a stay 48 to a lower surface of the left front side frame 31 supported by the left step platforms 24 and 25, and a right front side supported by the right step platforms 24 and 25. The battery stand 50 is fixed to the frame 31, and as shown in FIG.
A battery 51 for starting the engine 36 is mounted on the battery base 50, and the muffler 49 and the battery 51 are arranged separately on the lower surface of the step 9 on both sides of the engine 36.

Further, as shown in FIGS. 16 to 19, a bottom plate 52 is fixed to the bottom surface of the engine 36, and four rubber vibration isolating members 53 (front, rear, left and right) are mounted on the receiving base 34 and the frame member 35. The left and right sides of the bottom plate 52 are fixed via the bottom plate 52, and the bearing cylinder 54 is detachably bolted and fixed to the lower right side of the bottom plate 52, and the transmission shaft 59 is rotatably supported by the bearing cylinder 54, and the pulleys 55 and 56 And belt 57
7, the front side of the transmission shaft 59 is connected to the output shaft 58 on the front side of the engine 36, and as shown in FIG. 7, the rear side of the transmission shaft 59 is connected to the input shaft 60 on the front side of the transmission case 39 so as to be separable. 36 is transmitted to the transmission case 39 via the transmission shaft 59 and the transmission case 37
The PTO shaft 61a extends rearward from the rear side to transmit power to the planting section 3, and the transmission case 37
1b is extended rearward to be input to the rear axle case 42, and power is transmitted from the transmission case 37 to the rear wheel 6 via the rear axle case 42. Further, power is transmitted from the transmission case 37 to the front wheels 5 via the front axle case 38.

Further, as shown in FIG.
The frame member 35 may be lower than the bottom surface.
The middle part is formed by bending downward, and the vibration isolating member 53 is disposed at substantially the same height as the front frame 17.
The left and right main frames 1 with the engine 36 and the driver's seat 7
6, the right and left main frames 1
6, the width of the front frame 17 is set larger than the width of the engine 36. As shown in FIG.
6, the lower portion of the engine 36 is wrapped in a side view on the front frame 17, and a ventilation space is secured between the left and right front frames 17 and both sides of the engine 36 so that the hot air around the engine 36 is smoothly discharged, and the cooling efficiency of the engine 36 is improved. And lower the engine weight by lowering the engine.

Further, both sides of a frame member 35 to which a vibration isolating member 53 for supporting the engine 36 can be attached are fixed to the front frames 17 of the left and right main frames 16, and the strength of the left and right front frames 17 is enhanced by reinforcing the frame members 35. , The engine 36 is supported by vibration damping by a high rigidity frame structure, and the mounting interval of the left and right vibration damping members 53 is increased to reduce the vibration of the engine 36 transmitted in the torsion direction of the machine. It simplifies the structure and improves the anti-vibration function of the engine 36.

Further, as shown in FIGS. 12 and 18, both sides of the gate-shaped seat plate 62 in a plan view are fixed substantially at the middle of the left and right widths of the frame member 35, and the gate-shaped middle of the seat plate 62 is positioned rearward from the frame member 35. The left and right widths of a frame member 35 which is protruded, and the seat plate 62 is removably bolted and fixed to a pedestal 63 formed on the front of the steering case 40 on the front side of the transmission case 37 and both sides are fixed to the left and right front frames 17. Intermediate transmission case 37 and steering case 4
Fixed through 0. Then, as shown in FIGS. 8 and 12, the transmission case 37 is fixed to the frame member 35, the strength of the frame member 35 is secured against the vertical vibration of the engine 36, and the left and right The strength for connecting the frame 16 and supporting the engine 36 is improved, and the rigidity of the frame member 35 in the torsion direction of the machine is improved, thereby simplifying and reducing the weight of the support structure for the engine 36, and mounting the left and right anti-vibration members 53. At approximately the center of the width, the frame member 35 and the transmission case 37
And secures the strength of the frame member 35 by fixing it to the transmission case 37 against any torsional deformation force generated in the left and right directions caused by vibration of the engine 36 and the like. Improve, etc.

Also, as shown in FIGS. 7 and 17, a bearing cylinder 54 is detachably bolted and fixed to the lower surface side of the bottom plate 52 forming the engine stand in a separate structure, and the mounting and dismounting and mounting posture of the bearing cylinder 54 are determined. By adjusting the position, the structure can perform maintenance such as replacement of the belt 57 satisfactorily, and the alignment accuracy of the belt 57 can be obtained after the engine 36 is attached, not only improving the assembling work, but also improving the tensioning accuracy of the belt 57, The life and reliability of the belt 57 are improved.

As shown in FIGS. 17 and 18, a generator 64 is provided in front of the engine 36, and
6, the generator 64 is driven by the output shaft 58, and the gantry 65 is fixed to the front side of the bottom plate 52, which is the engine pedestal, in the approximate center of the right and left widths.
To fix the generator 64 with bolts,
Since the support portion of the generator 64 is provided and attached to the engine 36 and the bottom plate 52, compared to the conventional structure in which the generator 64 is supported only by the engine 36, the strong vibration of the support member of the generator 64 is prevented against the strong vibration of the engine 36, The support members for the generator 64, such as the connecting portion between the gantry 65 and the engine 36, can be reduced in size, cost, and weight, the vibration of the engine 36, the bottom plate 52, and the like can be reduced, and the performance of the machine can be improved.

[0017]

As is apparent from the above embodiment, the present invention is directed to a rice transplanter in which the front and rear wheels 5, 6 and the engine 36 and the driver's seat 7 are mounted on the left and right main frames 16, and the installation width of the left and right main frames 16 is reduced. The main frame 16 is formed so as to be wider than the left and right width of the engine 36.
The lower part is wrapped in a side view, and a ventilation space is secured between the left and right main frames 16 and both sides of the engine 36, so that the hot air around the engine 36 can be smoothly discharged and the cooling efficiency of the engine 36 can be easily improved. In addition, the engine can be installed low to easily reduce the weight center of the machine.

Further, both sides of a frame member 35 to which a vibration isolating member 53 for supporting the engine 36 can be attached are fixed to the left and right main frames 16, and the strength of the main frame 16 is reduced by reinforcing the frame member 35. The engine 36 can be formed to be lightweight, and the engine 36 can be vibration-isolated and supported by the high-rigidity frame structure. In addition, the mounting interval of the left and right vibration-isolating members 53 can be increased to easily reduce the vibration of the engine 36 transmitted in the torsion direction of the machine. The simplification and improvement of the anti-vibration function of the engine 36 can be easily performed.

Further, since the transmission case 37 is fixed to the frame member 35, the strength of the frame member 35 can be easily secured against the vertical vibration of the engine 36, and the left and right main frames 16 using the frame member 35 can be secured. It is possible to easily improve the strength for connection and support for the engine 36, and to improve the rigidity of the frame member 35 in the torsion direction of the main body, thereby easily simplifying and reducing the weight of the support structure for the engine 36. It is.

The frame member 35 and the transmission case 37 are fixed substantially at the center of the mounting width of the left and right anti-vibration members 53. The transmission member is capable of transmitting the torsional deformation force generated in the left and right directions due to vibration of the engine 36 and the like. By fixing the frame member 35 to the case 37, the strength of the frame member 35 can be easily secured, and the deformation and damage of the frame member 35 can be prevented, and the durability can be easily improved.

[Brief description of the drawings]

FIG. 1 is an overall side view.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an explanatory side view of the traveling vehicle.

FIG. 4 is a plan view of a main frame portion.

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a side view of a transmission case.

FIG. 7 is a side view of the engine transmission.

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a perspective view of a vehicle body equipped with an engine.

FIG. 10 is an enlarged view of FIG. 9;

FIG. 11 is a perspective view of a vehicle body equipped with a transmission case.

FIG. 12 is an enlarged view of FIG. 11;

FIG. 13 is a perspective view of a traveling transmission unit.

FIG. 14 is a perspective view of a front portion of a main frame.

FIG. 15 is an enlarged view of FIG. 14;

FIG. 16 is a top perspective view of the engine unit.

FIG. 17 is a bottom perspective view of the engine unit.

FIG. 18 is a front view of an engine unit.

FIG. 19 is a plan view of an engine unit.

[Explanation of symbols]

 5 Front wheel 6 Rear wheel 16 Main frame 35 Frame member 36 Engine 37 Transmission case 53 Anti-vibration member

Claims (4)

[Claims] 1. A rice transplanter in which front and rear wheels, an engine, and a driver's seat are mounted on left and right main frames, the width of the left and right main frames is formed to be larger than the left and right widths of the engine, and a lower portion of the engine is wrapped around the main frame in a side view. A rice transplanter characterized by the following. 2. The rice transplanter according to claim 1, wherein both sides of a frame member to which a vibration isolating member for supporting the engine can be attached are fixed to the left and right main frames. 3. The rice transplanter according to claim 2, wherein the transmission case is fixed to the frame member. 4. The rice transplanter according to claim 2, wherein the frame member and the transmission case are fixed substantially at the center of the mounting width of the left and right anti-vibration members.