JPH10225211A - Walking type vegetable transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve the problem that turning behavior is poor since an engine, a mission case and a planting part are arranged in the order of a front-to-back direction, the entire length of a machine body is long, traveling wheels are arranged at a front part and a back part and a wheel base is long in a conventional vegetable transplanter. SOLUTION: The engine E is arranged at the front part of a main frame 1, the mission case 3 is arranged at the back part of the engine and a transplanting part B is arranged at the back part of the main frame 1. A traveling drive shaft 10 is projected from the mission case 3 to both side parts, a front traveling drive case 11 is supported on the traveling drive shaft 10, a front wheel 15 is supported at the front part of the front traveling drive case 11 and the front traveling drive case 11 is made vertically movable and rotatable. At the time of elevating and rotating the front traveling drive case 11 and lowering a machine body, the front part of the front wheel 15 is positioned in front of a machine body front end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking type vegetable transplanting machine having a simple structure in which an engine, a transmission case, a transplanting section and the like are arranged on one main frame.

[0002]

2. Description of the Related Art Conventionally, an engine has been disposed on a front engine frame, a transmission case has been disposed at a rear portion of the engine frame, a transplant portion and a handle have been disposed at a rear portion, and running wheels have been mounted on the engine frame and the transmission case. Supported gait implanters are known. For example, Japanese Patent Application Laid-Open No. 6-141632.

[0003]

In the conventional walking type transplanter, a transmission case is arranged at a rear portion of an engine frame, an implanted transmission case is provided at a rear portion of the transmission case, and a handle frame is further provided at a rear portion of the transmission case. The planting section is arranged at the rear of the planting transmission case, the seedling mounting table is arranged at the front of the handle frame, and the work clutch lever, the steering clutch lever and the like are arranged at the rear of the handle frame. Therefore, the engine, the transmission case, and the planting portion were sequentially arranged in the front-rear direction, and the overall length of the aircraft was long.

[0004]

The present invention uses the following means in order to solve the above problems. That is, the engine is arranged at the front of the main frame, the transmission case is arranged at the rear of the engine, the transplanting part is arranged at the rear of the main frame, and the traveling drive shaft protrudes from both sides of the transmission case to the traveling drive. The front running drive case is supported on the shaft, the front wheels are supported at the front of the front running drive case, and the front running drive case is configured to be rotatable up and down. , The front portion of the front wheel is located forward of the front end of the fuselage. Further, a rear portion of a front traveling drive case and a front portion of a rear traveling drive case are supported on the traveling drive shaft, a front wheel is supported at a front portion of the front traveling drive case, and a rear wheel is disposed at a rear portion of the rear traveling drive case. And the front running drive case and the rear running drive case are arranged in an “in” shape. Further, the front wheel and the rear wheel are simultaneously driven.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall side view of a walking type vegetable transplanter according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a plan view of a lifting drive unit, and FIG.

Referring to FIG. 1, the overall configuration will be described. A main frame 1 is disposed at a front low, rear high, and an engine frame 2 is fixed to a front portion of the main frame 1, and an engine E is mounted on the engine frame 2. A transmission case 3 is fixed to a lower front part of the frame 1, a transplant part A is disposed inside a rear part of the main frame 1, and an operation part B is disposed at a rear end of the main frame 1. The operation unit B is provided with a traveling clutch lever, a work clutch lever, and the like. The engine E
The upper side and the side of the transmission case 3 are covered with a cover 9.

The main frame 1 is formed by bending a pipe member made of a steel pipe or the like so as to have an "H" shape in a side view and a substantially U-shape with an open front in a plan view. The width of the rear main frame 1 is made narrower and wider, and the width of the rear main frame 1 is made substantially equal to the vehicle width so that the side portions can be protected from obstacles.

The front end of the main frame 1 is fixedly provided at a middle portion of the engine frame 2 so that the main frame 1 extends obliquely upward and rearward. A generator 4 is mounted and fixed on a front portion of the engine frame 2, and an engine E is mounted and fixed on a rear portion of the generator 4. A double output pulley 6 is fixed on an output shaft 5 of the engine E,
Power is transmitted from the output pulley 6 to the generator 4 via the belt 7, power is transmitted from the output pulley 6 to the transmission case 3 via the belt 8, and the belt 8 crosses the main frame 1. .

The transmission case 3 is fixed to a rear portion of the engine frame 2 and a front lower portion of the main frame 1, and traveling drive shafts 10 protrude from both lower sides of the transmission case 3. The front drive drive case 11 and the rear drive drive case 12 inside thereof are pivotally supported so as to be able to turn up and down, respectively, and are arranged in an "in" shape when viewed from the side. Front running drive case 1
1 and a sprocket are fixed on the traveling drive shaft 10 in the rear traveling drive case 12, respectively.
Axle 1 on the other side of the rear drive case 12
Sprockets 3 and 14 are supported on the axles 13 and 14 in the front running drive case 11 and the rear running drive case 12, respectively, and the axle 13 is driven by the running drive shaft 10 via sprockets and chains.・ 14 can be driven. A front wheel 15 and a rear wheel 16 are fixed on axles 13 and 14 outside the front traveling drive case 11 and the rear traveling drive case 12, respectively, so that four wheels can be driven simultaneously.

As shown in FIG. 3, a stay 17 protrudes from an upper portion of the base portion of the front running drive case 11 so that the link 2
A link 21 is connected to a lower portion of the rear traveling drive case 12 on the base side, and a link 21 is connected to the link 20. It is pivotally connected to the moving arm 22. The swing arm 22 is pivotally supported by a pivot shaft 26 on a mounting plate 24 fixed in the left-right direction at the tip of a piston rod of a hydraulic cylinder 23 for elevation provided in the engine frame 2. The front ends of the links 20 and 21 are pivotally supported, and the other end of the swing arm 22 is pivotally supported by the tip of the piston rod 25 a of the swing cylinder 25. The swing cylinder 25 is composed of a double rod type cylinder, and links 20 and 21 are connected to tips of piston rods 25a on both sides, respectively, and are arranged symmetrically.

With such a configuration, the link 2 is extended by extending the hydraulic cylinder 23 for lifting and lowering.
As shown in FIG. 4, the angle between the front drive unit 11 and the rear drive unit 12 is reduced, the wheel base is shortened, the body is raised, and the turning radius can be reduced. it can. Conversely, when the lifting hydraulic cylinder 23 is contracted, the links 20 and 21 are pushed rearward to widen the angle between the front running drive case 11 and the rear running drive case 12, so that the wheel base becomes longer, the body is lowered, and the center of gravity is lowered. And the aircraft stabilizes. At this time, the front end of the front wheel 15 is located at a distance L ahead of the front end of the body, as shown by a two-dot chain line in FIG. 4, and can protect the front of the body and both sides thereof, and serves as a bumper. It is.

When the swing cylinder 25 is slid to the left, the left links 20 and 21 are pushed rearward, the left is lowered, the right is pulled and the right is raised, and the body is inclined to the left. And the aircraft can be kept horizontal when the field descends to the right. Conversely, when the swing cylinder 25 is slid rightward, the body can be lowered rightward. In this way, it is possible to control the aircraft horizontally.

Spare seedling stands 30 are fixed on the left and right sides of the main frame 1 in the front-rear direction.
A seedling drive mechanism 33 is disposed, a seedling mounting table 34 and a vertical feed mechanism 35 are disposed between the rear portions of the main frame 1, and a handle 36 configured in a U-shape in plan view is provided at the rear end of the main frame 1. The handle 36 is provided so as to be adjustable in the vertical direction, and can be changed according to the height of the operator, thereby improving workability. Further, a lower frame 37 protrudes rearward from a rear side surface of the transmission case 3, and an earth covering ring 39 is disposed at a lower rear portion of the lower frame 37.

The mechanism 32 for raising and lowering the transplanting claws 31 is disposed at the rear of a planting transmission case 45 projecting rearward from one side of the transmission case 3 (the right side in the present embodiment). Are arranged at the rear of a transmission case 40 extending rearward from the other side (the left side in this embodiment), and power is transmitted from the transmission case 3 via a chain, a sprocket, or the like, and the seedling removing drive mechanism 33 is provided. From the rear of the transmission case 40 that drives
The power is transmitted to the vertical feed mechanism 35 via the universal joint 42. The vertical feeding mechanism 35 is suspended via brackets 43 fixed on both sides of the main frame 1, and the seedling tray is conveyed downward by a fixed amount by the vertical feeding mechanism 35, and is driven by the seedling collecting driving mechanism 33. The seedlings are transported one by one from the seedling tray to the transplanting nails 31 by the seedling collecting nails, the transplanting nails 31 are lowered, opened on the ridges, dropped and planted, and the soil on both sides is pressed down by the soil covering ring 39 and transplanted. You do it.

[0015]

As described above, the present invention has the following advantages. That is, the engine is arranged at the front part of the main frame, the transmission case is arranged at the rear part of the engine, the transplant part is arranged at the rear part of the main frame, and the traveling drive shaft projects from both sides of the transmission case,
A front running drive case is supported on the running drive shaft, a front wheel is supported at the front of the front running drive case, and the front running drive case is configured to be rotatable up and down. When the aircraft is lowered, the front wheels are positioned ahead of the front end of the aircraft, so when the front of the aircraft is shortened and the vehicle height is lowered, the front wheels are located ahead of the front of the aircraft. It is easy to get over the ridges and the entrance to the field with large steps.

Also, a rear portion of the front traveling drive case and a front portion of the rear traveling drive case are supported on the traveling drive shaft, a front wheel is supported at a front portion of the front traveling drive case, and a rear wheel is supported at a rear portion of the rear traveling drive case. The wheels are supported, and the front drive case and the rear drive case are arranged in the “in” shape, so that the support structure of the front and rear wheels can be simplified, the overall length of the aircraft can be shortened, and the aircraft can be raised and lowered. When the front drive case and the rear drive case are opened in the front-rear direction to reduce the vehicle height, the wheel base becomes longer, and the vehicle can run stably during work. When the vehicle height is increased during traveling or circulating, the wheel base is shortened, the turning radius can be reduced, the turning can be performed in a small area, and the turning can be easily performed even in a narrow field with little turning over. It is easy to handle and easy to handle. Further, since the front wheel and the rear wheel are configured to be driven simultaneously, the vehicle can run even on a sloping land or a soft field, the slippage is reduced, and the planting accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a walking type vegetable transplanter according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view of a lifting drive unit.

FIG. 4 is a side view of a state where the body is raised.

[Explanation of symbols]

 Reference Signs List A transplantation part E engine 1 main frame 2 engine frame 3 transmission case 10 traveling drive shaft 11 front traveling drive case 12 rear traveling drive case 15 front wheel 16 rear wheel

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shuichi Shimizu 1-32 Chayacho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Agricultural Machinery Co., Ltd.

Claims (3)

[Claims] 1. An engine is disposed at a front portion of a main frame, a transmission case is disposed at a rear portion of the engine, a transplant portion is disposed at a rear portion of the main frame, and a traveling drive shaft projects from both sides of the transmission case. A front running drive case is supported on the running drive shaft, a front wheel is supported at the front of the front running drive case, and the front running drive case is configured to be rotatable up and down. Wherein the front portion of the front wheel is positioned forward of the front end of the machine when the vehicle is moved. 2. The front drive unit according to claim 1, wherein a rear portion of the front drive case and a front portion of the rear drive case are supported on the drive shaft, and a front wheel is supported at a front portion of the front drive case. A walking type vegetable transplanter, wherein a rear wheel is supported at a rear portion of the case, and the front traveling drive case and the rear traveling drive case are arranged in an "in" shape. 3. A transmission case is disposed at the center of the fuselage, and a traveling drive shaft projects from both sides of the transmission case to support a rear portion of a front traveling drive case having front wheels supported on the traveling drive shaft and a rear wheel. After that, support the front part of the traveling drive case and turn on the front traveling drive case and the rear traveling drive case.
A walking type vegetable transplanter characterized in that the front and rear wheels are simultaneously driven.