JPH10290608A - Sulky type rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky type rice transplanter compacted in the size of the frame and improved in travel stability. SOLUTION: This sulky type rice transplanter is provided with an engine mounted on the front portion of the frame, front and rear wheels 7, 9 disposed on the front and rear lateral sides of the frame, and a planting section C liftably connected to the rear portion of the frame. Therein, a mission case 5 is disposed at a position below the engine 2, and a front wheel shaft 7-1 for the front wheels 7 is disposed at a position below the mission case 5. Further, the engine 2 is interlocked and connected to the mission case 5 on the side of the frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice transplanter.

[0002]

2. Description of the Related Art Conventionally, a riding rice transplanter has an engine mounted at a front portion, front and rear wheels at front and rear and left and right portions of the fuselage, a planting portion is continuously provided at the rear, and power is provided below the engine portion. A transmission case part for transmitting to the front and rear wheels and the planting part was provided. In addition, the engine and the transmission case are linked to each other at a position forward of the engine.

[0003]

However, in the conventional rice transplanter described above, the transmission case is disposed below the engine, and the engine and the transmission case are interlocked at the front position of the engine. However, the transmission mechanism between the engine and the transmission case is protruded forward of the fuselage, and the length of the front portion of the fuselage is increased, so that the size of the fuselage cannot be reduced.

[0004]

According to the present invention, there is provided a riding rice transplanter in which an engine is mounted at a front part of a fuselage, front and rear wheels are provided at front, rear, right and left parts of the fuselage, and a planting part is continuously connected to a rear part of the fuselage so as to be able to move up and down. The transmission case is located below the engine, the front axle of the front wheels is located below the transmission case, and the engine and the transmission case are interlocked on the side of the fuselage. To provide a riding rice transplanter.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, when the airframe is running, the power transmitted from the engine to the transmission case is transmitted to the front and rear wheels, and the steering interlocking mechanism is used to perform left-right steering and provided at the rear of the airframe. The planting is performed by the planting section.

In addition, a transmission case is disposed below the engine, a front axle of the front wheels is disposed below the transmission case, and the engine and the transmission case are interlocked by the side of the body. By doing so, the length from the front end of the body to the front wheels can be made as short as possible, and the body can be made more compact.

Further, by disposing the transmission case below the engine and disposing the front axle of the front wheels below the transmission case, the weight of the engine and the transmission case is concentrated on the front wheels. Hanging, on the other hand, because the weight of the planting part will be hung on the rear wheel,
The front-rear balance of the weight becomes good, and the stability of the body during traveling can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, FIG. They are connected via a lifting mechanism (D).

The traveling section (B) is provided with an engine on the front upper portion of the main frames (1) and (1) positioned in the front-rear direction on both sides of the body.
The engine (2) is equipped with a steering shaft (3) at the rear of the engine (2), and a steering handle (3-
1) is worn. (4) is a bonnet that covers the top of the engine (2) and fuel tank (4-1).

[0010] A transmission case is provided below the engine (2).
(5), and fix the front axle case (6) on the left and right sides of the transmission case (5), and attach the front wheels (7) to it via the front axle (7-1). Along with
The rear axle case (8) is located behind the fuselage, and rear wheels (9) are mounted on both left and right sides of the rear axle case (8).

Reference numeral (10) denotes a lower frame located below the main frame (1), and a front end (10-1) is connected to a front horizontal frame (10-2) provided horizontally in the center of the fuselage. While the rear end
(10-3) is connected to an inverted U-shaped rear horizontal frame (11) in rear view. (10-4) is a reinforcement frame extending in front of the lower frame (10), and (12) is located in the lateral direction of the fuselage and has left and right vertical parts (12-1) and (12-1). Connect to the rear end (1-1) (1-1) of the main frame (1) and lower frame (10)
It is an intermediate horizontal frame connected to an intermediate position in the front-rear direction of (10).

A transmission mounting frame (10-5) is provided at a front position of the main frame (1) in a lateral direction.
Is an engine mounting frame provided laterally at the front of the main frame (1). A spare seedling mounting frame (10-7) is provided at the left and right sides of the front of the main frame (1). (10-8) is a support frame for the differential lock lever, and (10-9) is a step support frame for supporting the center of the step. (13) is a rear frame provided in an inclined manner rearward and upward from both left and right positions of the front horizontal frame (10-2), and a rear end (13-1) is connected to an upper portion of the rear horizontal frame (11). Have been.

The rear axle case (8) is connected to the left and right rear portions of the lower frame (10) and is interlocked with the transmission case (5) via a propeller shaft (14). Reference numeral (15) denotes a rear axle projecting from both sides of the rear axle case (8), which is connected to and supported by the lower end of the rear horizontal frame (11).

(16) is a planting drive shaft for interlocking the transmission case (5) of the traveling part (B) of the rice transplanter and the planting drive case (17) of the planting part (C). And such planting drive shaft
In (16), the front drive shaft (16-1) and the rear drive shaft (16-2) are operatively connected via a universal joint (18). Also, the rear drive shaft
The (16-2) has an outer tube shaft (16-3) and an inner tube shaft (16-4) spline-fitted to make it extendable and retractable, while the inner tube shaft (16-4) is planted and driven It is linked to the case (17).

A steering case (19) is disposed above the transmission case (5) and has a steering handle (3-1) interlockingly connected via an upper steering shaft (3). (19-1) is provided.
Reference numeral (20) denotes a pitman arm shaft projecting downwardly below the steering case (19). A pitman arm (21) is connected to a lower end of the shaft toward the rear. Also, the bases of the drag rods (22) and (22) are connected to the left and right sides of the pitman arm (21), and are linked to the knuckle arms (24) and (24) of the left and right front gear boxes (23) and (23). doing.

The pitman arm shaft (20), pitman arm (21), drag rods (22) (22), knuckle arms (24) (24) and the like
A steering interlock mechanism (25) for interlocking the front wheel (3) with the front wheels (7) (7) is constituted. Same steering interlocking mechanism (25)
Are disposed at the rear of the transmission case (5), as shown in FIG.

(26) mounting brackets projecting downward from both sides of the front of the main frame (1), to which the transmission case (5) is fixed. (27) is a fixing bolt.

Reference numeral (28) denotes an engine pulley for transmitting the output of the engine (2) to the transmission case (5), and is disposed on the left side of the engine (2). Reference numeral (29) denotes an input pulley of the transmission case (5).
9) is attached to the left end of the input pulley shaft (29-1) that is arranged inside the transmission case (5) with the axis line extending in the left-right direction, and is located on the left side of the transmission case (5). Has been established. As shown in FIG. 1, the input pulley shaft (29-1) is disposed at a position forward of the front axle (7-1) of the front wheel (7). A V-belt (30) is wound between the engine pulley (28) and the input pulley (29) from the upper front to the lower rear of the fuselage, and the engine (2) and the transmission case
(5) is linked to the left side of the fuselage.

Reference numeral (31) denotes a wide-width step / casing body positioned on the upper surface of the main frame (1). The rear side is integrally connected to the rear fender (32), and the floor, the transmission guide plate and the like. It is made of a synthetic resin having high rigidity such as FRP in order to use the same.

Reference numeral (33) denotes a transmission lever protruding above the transmission case (5), which is located near the steering column (34). Reference numeral (35) denotes a lifting link mechanism, and a base of a pair of left and right lift arms (37) is provided on a link support bracket (36) which is obliquely bridged between a rear portion of the lower frame (10) and a rear horizontal frame (11). Is supported. (37-1) is the fulcrum axis, (3
8) is the front horizontal frame (10-2) provided on the lower frame (10)
The base (38-1) is pivotally attached to the
This is a lifting hydraulic cylinder connected to the upper support shaft (39) of (37).

Reference numeral (40) denotes a lift link of a lifting link mechanism (35), and a pair of left and right lift links (40) has a front end provided with a lift arm.
While being connected to the upper support shaft (39) of (37), the rear end is pivotally supported by a horizontal shaft (42) provided at the front of the planting frame (41). (Four
3) is a lower link for linking the running part (B) and the planting part (C), and a pair of lower links (43) on the left and right sides has a front end provided on the link support bracket (36). While being pivoted to
The rear end is pivotally supported on a horizontal axis (42) provided at the front of the planting frame (41).

(44) is a top link provided in a bridging manner between a rear portion of the rear frame (13) and a vertical frame (45) provided on the planting frame (41). The top link (44) is shown in FIG. As described above, the front end is formed in a forked shape (44-1).

(46) is a mounting seat, (47) is a fulcrum pin, and (48) is a top link pin. And the above top link (44)
Further, a parallel link mechanism (49) is constituted by the lower link (43), the side-by-side lift arm (37) and the vertical frame (45).

The lifting hydraulic cylinder (38) is operated by shortening the cylinder rod (38-2) to rotate the lift arm (37) forward and raise the planted portion by the lift link (40). It works.

On the other hand, by extending the cylinder rod (38-2) of the lifting hydraulic cylinder (38), the planting portion is
(C) is lowered.

In FIG. 6, reference numeral (50) denotes a fixed plate provided at the base of the steering column (34).
(19) is fixed by bolts (51).

A support plate (52) for supporting the lower side of the steering case (19) is connected to the front horizontal frame (10-2) via a mounting bracket (53). (54) is a fixing bolt. Reference numeral (55) denotes a vertical frame integrally connected to the front horizontal frame (10-2). ) Is provided.

In FIGS. 1 and 2, reference numeral (60) denotes an operation unit, and a seat (61) is provided above the casing body (31). (62) is a planting elevating lever provided on the right side of the seat (61),
(63) is a clutch pedal, (64) is a brake pedal, consisting of a left pedal (64-1) and a right pedal (64-2),
(65) is an auxiliary speed change lever.

The embodiment of the present invention is configured as described above, and therefore, the engine mounted at the front position of the fuselage
The power of (2) is transmitted to the lower transmission case (5) and simultaneously to the front axle case (6) provided on both sides of the transmission case (5). The left and right front axles (7-1) and (7-1) and the front wheels (7) and (7) are driven. In addition, power is guided to a rear axle case (8) via a propeller shaft (14) to drive rear wheels (9) and (9) to cause the aircraft to travel.

When the steering handle (3-1) is turned left and right, the steering shaft (3) is turned,
The reduction gear (19-1) in the steering case (19) operates to rotate the pitman arm shaft (20) in the left-right direction.

When the pitman arm (21) operates, the knuckle arm (2) is moved via the drag rods (22) and (22).
4) Rotate (24) and front gear box (23) (23),
At the same time, the front wheels (7) and (7) are steered left and right.

As described above, the engine (2) is mounted at the front of the fuselage, the front and rear wheels (7), (7), (9), (9) are provided at the front, rear, left and right portions of the fuselage. C) is mounted on a passenger rice transplanter that can be moved up and down freely.
(5), and a steering case (19) interlockingly connected to the steering handle (3-1) via the steering shaft (3) at the rear upper position of the transmission case (5). Since the steering case is installed on the installed rice transplanter, the power transmitted from the engine (2) to the transmission case (5) is transmitted to the front and rear wheels (7), (7), (9) ( While transmitting to 9), left and right steering is performed by the steering interlocking mechanism (25), and planting is performed by the planting section (C) provided at the rear of the aircraft.

Then, a transmission case (5) is disposed below the engine (2), and the transmission case (5)
The steering case (19), which is linked to the steering handle (3-1) via the steering shaft (3), is separately located above the rear of the vehicle, so the steering case (19) is disassembled. When the internal inspection and repair is performed, only the steering case (19) can be removed from the frame and disassembled.

Therefore, the transmission case 15 is not removed or disassembled, so that the steering case 19 can be easily disassembled and inspected, and the operation can be performed efficiently.

In addition, since the steering case (19) is disposed above the rear part of the transmission case (5) and the steering interlock mechanism (25) is disposed behind the transmission case (5), the steering interlock mechanism is provided. In (25), the front is protected by the transmission case (5) without protruding forward of the fuselage, and damage to the steering interlocking mechanism (25) can be prevented.

The steering interlocking mechanism (25) is disposed in a space formed between the front and rear wheels (7), (7), (9), (9), and effectively utilizes the space. This makes it possible to reduce the size of the aircraft.

Since the transmission case (5) and the steering case (19) are arranged between the left and right main frames (1) and (1), they are formed between the left and right main frames (1) and (1). Space can be used effectively, the overall length of the aircraft is short,
In addition, since the height of the airframe can be reduced, the size of the airframe can be reduced.

Further, since the steering case (19) is provided between the left and right main frames (1), (1), the steering case (19) and the front wheels (7), (7) are interlocked. Steering interlock mechanism (25) left and right main frame (1) (1)
Therefore, the structure of the steering interlocking mechanism (25) can be simplified, and the assemblability and maintainability of the body can be improved.

Further, a steering case (19) is provided at a position above the rear of the transmission case (5), and a front axle of the front wheels (7) (7) is provided below the transmission case (5).
(7-1) and the steering interlock mechanism (25) at the rear of the transmission case (5).
Steering-related mechanisms can be arranged separately from the transmission case (5) and centrally in the vicinity of the transmission case (5), which can also improve the assembling and maintenance of the aircraft. It is.

Further, according to the present invention, the transmission case (5) is disposed below the engine (2), and the front axle (7) of the front wheels (7) is disposed below the transmission case (5). 7
-1), and since the engine (2) and the transmission case (5) are linked to each other on the side of the fuselage, the length from the front end of the fuselage to the front wheels (7) (7) is reduced. This can be as short as possible, and the body can be made more compact.

A transmission case (5) is provided below the engine (2).
Since the front axle (7-1) of the front wheels (7) and (7) is located below (5), the weight of the engine (2) and the transmission case (5) is reduced by the weight of the front wheels (7) ( 7) intensively, while the planting section
Since the weight of (C) is applied to the rear wheels (9) and (9), the front-rear balance of the weight is good, and the stability of the body during traveling can be improved.

[0042]

The present invention is embodied in the form described above and has the following effects.

That is, in the present invention, the transmission case is disposed below the engine, and the front axle of the front wheel is disposed below the transmission case.
Since the engine and the transmission case are linked to each other on the side of the fuselage, the length from the front end of the fuselage to the front wheels can be made as short as possible, and the fuselage can be made more compact.

Since the transmission case is disposed below the engine and the front axle of the front wheels is disposed below the transmission case, the weight of the engine and the transmission case is concentrated on the front wheels. On the other hand, the weight of the planting portion is applied to the rear wheel, so that the front-rear balance of the weight is good, and the stability of the body during traveling can be improved.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a riding rice transplanter equipped with the present invention.

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a side view showing a main part of the body frame.

FIG. 4 is a plan view of the same.

FIG. 5 is a plan view showing a main part of the present invention.

FIG. 6 is a side view of the same.

FIG. 7 is a rear view showing the lifting link mechanism.

[Explanation of symbols]

 2 Engine 3 Steering shaft 3-1 Steering handle 5 Transmission case 7 Front wheel 9 Rear wheel 19 Steering case 25 Steering interlock mechanism C Planting part

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

Claims (1)

[Claims] An engine (2) is mounted on the front of the fuselage, front and rear wheels (7), (7), (9) and (9) are provided on the front, rear, left and right portions of the fuselage, and a planting section (C) is provided on the rear of the fuselage. In a rice transplanter with a slab that can move up and down freely, a transmission case (5) is arranged below the engine (2), and front wheels (7) and (7) are set below the transmission case (5). The front axle (7-1) is installed and the engine
A riding rice transplanter wherein the transmission case (5) and the transmission case (5) are linked to each other on the side of the fuselage.