JP2002272202A - Wheel shaft type rotary plowing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strong wheel shaft type rotary plowing machine, while simplifying its constitution and reducing the cost. SOLUTION: This wheel shaft type rotary plowing machine is provided by installing an engine 3 at the upper part of a transmission case 2, a plowing unit 5 at the lower part of the transmission case 2, and a wheel mounting frame 6 at the upper part of the transmission case 2 as extended in its rear direction, extending a handle post 7 from the rear part of the lower end part of the transmission case 2 in an inclined upper rear direction, and fixing the crossing part of these wheel-mounting frame body 6 with the handle post 7. Since the transmission case 2, wheel-mounting frame body 6 and handle post 7 are fixed as an almost triangular state by a side view, it is possible to aim at the strength improvement and hence constitute the strong wheel shaft type rotary plowing machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle type rotary tiller.

[0002]

2. Description of the Related Art There is an invention disclosed in Japanese Patent Application Laid-Open No. Hei 10-53103. This axle-type rotary cultivator has a configuration in which a resistance bar is attached to a rear portion of the fuselage.

[0003]

The prior art axle-type rotary cultivator is convenient for tilling work, but is inconvenient for running the axle-type rotary cultivator on the road. Therefore, the present invention provides a strong axle-type rotary cultivator while simplifying the constituent members and reducing the cost, and also aims to smoothly run on the road.

[0004]

[Means for Solving the Problems] In order to solve such a technical problem, the following constitution is provided. According to the first aspect of the present invention, the engine 3 is mounted on the upper part of the transmission case 2, the tilling device 5 is mounted on the lower part, and the wheel mounting frame 6 is mounted on the upper part of the transmission case 2 so as to extend rearward. The invention is characterized in that the handle post 7 extends obliquely rearward and upward at the lower end of the case 2 and the intersection of the wheel mounting frame 6 and the handle post 7 is fixed.
A resistance rod 11 is attached to the rear part of the wheel mounting frame 6, and a cultivator 12 is attached to the wheel mounting frame 6 behind the tillage device 5 and in front of the resistance rod 11 in a suspended manner.
A gap is provided between the upper edge of the wheel mounting frame 2 and the lower edge of the wheel mounting frame 6, and the soil cultivator 12 is mounted so as to be able to swing up and down. The left and right tail wheels (10, 10) are attached to the middle part of the body (6) in the front-rear direction so as to be vertically adjustable, and the resistance bar (11) is attached to the rear end of the wheel mounting frame (6) so as to be vertically adjustable. According to the invention of No. 4, the wide tilling device 15 to which the inward tilling claw 20 and the outward tilling claw 21 are attached is attached to both sides of the tilling shaft 4 which is mounted on the lower part of the transmission case 2, and the inside is provided on the outside. Tillage device 1 with directional tilling claw 20 attached
6 is added to both sides of the wide tilling device 15 to form a wide tilling device, or a narrow tilling device 16 is connected to both side portions of the cultivating shaft 4 to form a narrow tilling device. The invention of Item 5 is characterized in that eccentric tilling claws 24 eccentric to the outside and throwing cultivated soil inward are attached to the left and right sides of the wide tilling device 15 or the narrow tilling device 16.

[0005]

According to the first aspect of the present invention, the transmission case 2, the wheel mounting frame 6 and the handle post 7 have a substantially triangular frame structure in a side view, so that the strength can be increased. A strong axle-type rotary tiller can be configured.

According to the second aspect of the present invention, the cultivator 12 can be swung back and forth while the mounting structure of the cultivator 12 is simple, and the cultivator 12 is adapted to the inclined surface of the field. The ridges can be formed. According to the third aspect of the present invention, the left and right tail wheels 1
0 and 10 are attached in a vertically adjustable manner, and a resistance bar 11 is attached to the rear end of the wheel attachment frame 6 so as to be vertically adjustable.
Various operations such as grass cutting work and tillage work can be performed while stabilizing the tillage depth while keeping the component structure simple. Further, the left and right tail wheels 10, 10 are adjusted upward, the resistance bar 11 is removed, and the left and right tail wheels 10, 10 are removed.
By pivoting the handle post 7 downward with the fulcrum as a fulcrum, the tillage device 5 can be lifted, and the axle-type rotary tiller can be easily traveled.

According to a fourth aspect of the present invention, a wide tilling device 15 is provided.
The tillage work can be performed as a wide tillage device by adding the narrow tillage devices 16 and 16 on both the left and right sides of the narrow tillage device. On the outside, inward tilling claws 20, 2
Since 0,... Are attached, a clean tilling finish can be achieved while preventing the scattering of soil to the outside.

[0008] In the case of middle tillage work, the tilling shaft 4
The narrow tilling device 16 is connected to the left and right sides of the cultivator, and the narrow tilling device is used as a narrow tilling device. In the invention according to claim 5, since the eccentric tilling claw 24 which is eccentric to the outside and which throws out the cultivated soil inward is attached to the outermost side of the tilling device, the cultivation width can be easily increased, and the outermost tilling width can be increased. The tilling work can be performed while preventing the scatter of the cultivated soil to the outside with the inward tilling claws.

[0009]

Embodiments of the present invention will be described below. FIG. 1 shows an overall side view of an axle-type rotary tiller, and FIG. 2 shows a cut-away plan view of a main part.

An engine 3 is mounted on the upper part of the transmission case 2 of the axle-type rotary cultivator 1, and the output shaft of the engine 3 is extended downward so that the front end thereof faces the upper end of the transmission case 2. ing. The transmission case 2 is configured to be long in the longitudinal direction, and a transmission shaft 3a extending from the upper part to the lower part is supported inside the transmission case 2, and a tilling shaft 4 is supported at a protruding portion behind the lower end of the transmission case 2. . Thus, the lower end of the output shaft on the engine 3 side and the upper end of the transmission shaft 3a are operatively connected by, for example, a coupling, and power is transmitted from the lower end of the transmission shaft 3a to the tilling shaft 4 by, for example, a worm and a worm wheel. ing. The tilling shaft 4 is provided with a tilling device 5 comprising a tilling nail and a tilling pipe.

On the upper part of the transmission case 2, a wheel mounting frame 6
Is installed to extend backward. The wheel mounting frame 6 is composed of left and right frames 6a, 6a, and the front side of the wheel mounting frame 6 is configured as a wide portion 6b, and the left and right frames 6a, 6a.
The transmission case 2 is attached to the transmission case 2 with bolts and nuts so as to be sandwiched between the left and right frames 6a. In addition, a handle post 7 is attached to the rear protruding portion of the lower end portion of the transmission case 2 so as to extend obliquely rearward and upward, and a lower portion of the handle post 7 is widened by the width of the wheel mounting frame 6. It is inserted into the portion 6b, the upper portion extends upward, and the cross portion is fixed by, for example, welding.

In this embodiment, the transmission case 2, the wheel mounting frame 6 and the handle post 7 are fixed in a substantially triangular frame structure when viewed from the side. This makes up a highly durable axle-type rotary tiller.

A carry handle 8 which is bent so as to be located above the engine 3 is attached to an intermediate portion of the handle post 7, and a handle 8a of the carry handle 8 is located above the center of gravity of the body. . Left and right handles 9 for operation are attached to the upper end of the handle post 7.

Since the handle 8a of the carry handle 8 is located above the center of gravity of the body, the body can be easily lifted and transported without tilting. Further, if the carry handle 8 is detachably attached to the handle post 7, the inspection and maintenance of the engine 3 can be performed easily by removing the carry handle 8.

Left and right tail wheels 10, 10 are vertically and freely adjustable via a left and right tail wheel support 25, 25 at an intermediate portion of the wheel mounting frame 6 in the front-rear direction. Since the bar 11 is attached so as to be vertically adjustable, the component configuration can be simplified. Next, FIG. 3 will be described. FIG. 3 shows a side view of the main part. A cultivator 12 is mounted on the wheel mounting frame 6 behind the tillage device 5 and in front of the resistance rod 11. A support 13 is extended from the cultivator 12 so as to protrude upward, and the support 13 is supported on the wheel mounting frame 6 by a pin 14 in a suspended manner. A gap is provided between the lower end edge of the frame 6 and the soil cultivator 12 is attached so as to be able to swing up and down around the pin 14 within a predetermined range.

[0016] With the above arrangement, the cultivator 12 can be swung back and forth while the mounting structure of the cultivator 12 is simple, and the cultivator 12 is adapted to the inclined surface of the field. The ridges can be formed. Next, FIG.
The tillage device 5 will be described with reference to FIG. 4 is a front view of the main part, FIG. 5 is a side view of the main part, FIG. 6 is a front view of the main part,
FIG. 7 is a side view of a main part.

At the lower part of the transmission case 2, a tilling shaft 4 is installed so as to protrude on both left and right sides, and mounting holes 4 a, 4 a,... Are provided on both right and left sides of the tilling shaft 4. The device 15 and the narrow tilling device 16 can be selectively attached. The wide tilling device 15 is configured as follows. One side of the wide tilling pipe 18 is configured as a small-diameter cylindrical portion 18a that can be fitted and connected to the cultivating shaft 4, and the other side is configured as a large-diameter cylindrical portion 18b that can connect the cylindrical portion of the narrow tilling device 16. . For example, four sets of inward cultivating claws 20 and outward cultivating claws 21 are attached to the claw holder 19 attached to the small-diameter cylindrical portion 18a of the wide cultivating pipe 18 by bolts and nuts so as to form a pair with each other. Are formed in the small-diameter tube portion 18a and the large-diameter tube portion 18b.

The narrow tillage device 16 is constructed as follows. Claw holders 19, 19 are attached to the narrow tillage pipe 22 at predetermined intervals on the left and right.
9 and 19, for example, four sets of inward tilling claws 20, 20,
... is attached. When tilling work is performed, as shown in FIG.
8 are connected to the left and right sides of the tilling shaft 4 by pins, and the narrow cultivating pipes 22, 22 are inserted into the large-diameter cylindrical parts 18b of the wide tilling pipes 18, 18 and connected by pins. The narrow tilling devices 16 and 16 are added to the left and right sides of the wide tilling device 15 to perform tilling work as a wide tilling device. The narrow tilling devices 16, 16 added to the left and right sides of the wide tilling device 15 include inward tilling claws 20, 20, 20.
Because it is attached, it is possible to achieve a clean tilling finish while preventing the scattering of soil to the outside.

As shown in FIG. 6, when the middle tilling operation is performed, a narrow tilling pipe 2 is provided on both left and right sides of the tilling shaft 4.
The two and 22 are fitted and connected by a pin to form a narrow tillage device, and a middle tillage operation is performed while advancing the middle part of the ridge. The narrow tilling devices 16, 16 have inward tilling claws 20, 20,.
Because it is installed, it is possible to clean the middle tillage work while preventing the scattering of soil to the outer crops.

Next, another embodiment of the tilling apparatus will be described with reference to FIG. Two tilling pipes are provided at both ends of the cultivating shaft 4.
The small-diameter cylindrical portion 23a on one side is fitted and connected by a pin 14, and the other side of the tilling pipe 23 is configured as a large-diameter cylindrical portion 23b to which the narrow tilling device 16 can be connected.
The nail holder 19 attached to the small-diameter cylindrical portion 23a of the tilling pipe 23 has a plurality of sets of inward tilling nails 20 and outward tilling nails 2.
1 are attached with bolts and nuts, and connecting holes 21, 21,. Large-diameter cylindrical part 23
An eccentric cultivating claw that attaches a claw holder 19 to an end of the b, attaches an inward tilling claw 20 to the inside of the claw holder 19, and eccentric to the outside and throws cultivated soil to the outside at the outside. 24 is attached.

As described above, since the inwardly eccentric tilling claw 24 is attached to the outermost side of the tilling pipe 23, the width of tilling can be easily widened, and the outermost inwardly tilling claw 20 can be used to extend the tilling width. Tilling work can be performed while preventing the scattering of soil. Next, FIGS. 9 to 13 will be described. 9 to 11 are side views showing the working state, and FIGS. 12 and 13 are plan views showing the working state.

In the narrow portion 6c at the rear of the wheel mounting frame 6,
The front ends of the left and right tail wheel supports 25, 25 are vertically adjustable and detachably supported, and the left and right tail wheel supports 25, 2 are supported.
The left and right tail wheels 10, 10 are attached to the lower rear end of the rear wheel 5. A resistance bar 11 is attached to the rear end of the wheel mounting frame 6 so that the resistance bar 11 can be adjusted up and down, and can rotate back and forth within a predetermined range around the fulcrum pin 14.

However, when weeding, as shown in FIGS. 9 and 12, the left and right tail wheels 10, 10 are adjusted downward, the resistance rod 11 is adjusted downward, and the wide tillage is performed. Work is performed in a state where the narrow tilling device 16 is added to the device 15. When tilling work is performed in a hard field,
As shown in FIG. 12, the left and right tail wheels 10 and 10 and the resistance rod 11 are adjusted to an intermediate position in the vertical direction, and work is performed in a state where the wide tillage device 15 and the narrow tillage device 16 are added. In addition, when tilling work is performed in a soft field, as shown in FIGS. 11 and 12, the left and right tail wheels 10, 10 are adjusted to the uppermost position, and the resistance bar 11 is adjusted to the middle position in the vertical direction. Tilling work with. In addition, when doing tillage work,
As shown in FIG. 13, the left and right tail wheels 10, 10 are removed, and the narrow tilling device 16 is attached to the tilling shaft 4 for work.

Since the left and right tail wheels 10, 10 and the resistance bar 11 are mounted on the wheel mounting frame 6, the weight and cost can be reduced. Also, the left and right tail wheels 10, 10 are provided in front of the resistance bar 11 so as to be vertically adjustable, so
By variously adjusting the right tail wheels 10, 10 and the resistance rod 11, various operations such as movement of the body, grass cutting work, tilling work, etc. can be performed while stabilizing the tilling depth. In addition, by removing the left and right tail wheels 10, 10, middle tillage work can be performed smoothly in a seedling or in a narrow place.

[Brief description of the drawings]

FIG. 1 is an overall side view.

FIG. 2 is a cutaway front view of a main part.

FIG. 3 is a side view of a main part.

FIG. 4 is a cutaway rear view of a main part.

FIG. 5 is a side view of a main part.

FIG. 6 is a cutaway rear view of a main part.

FIG. 7 is a side view of a main part.

FIG. 8 is a rear view of a main part.

FIG. 9 is a side view showing a working state.

FIG. 10 is a side view showing a working state.

FIG. 11 is a side view showing a working state.

FIG. 12 is a plan view showing a working state.

FIG. 13 is a plan view showing a working state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Axle type rotary cultivator 2 Transmission case 3 Engine 3 4 Tilling shaft 5 Tilling device 6 Wheel mounting frame 7 Handle post 8 Carry handle 9 Left / right handle 10 Left / right tail wheel 11 Resistance rod 12 Cultivator 13 Support 14 Pin 15 Wide tillage device 16 Narrow tillage device

Claims (5)

[Claims] An engine 3 is mounted on an upper part of a transmission case 2.
, A tillage device 5 is attached to the lower part, and the transmission case 2
The wheel mounting frame 6 is attached to the upper part of the transmission case 2 so as to extend rearward, and the handle post 7 extends obliquely rearward and upward at the lower end of the transmission case 2. An axle-type rotary cultivator characterized in that a crossover portion is fixed. 2. A resistance bar 11 is provided at the rear of the wheel mounting frame 6.
The cultivator 12 is attached to the wheel mounting frame 6 behind the tillage device 5 and in front of the resistance rod 11 in a suspended manner, and the upper edge of the cultivator 12 and the lower edge of the wheel mounting frame 6 are attached. The axle-type rotary cultivator according to claim 1, wherein a gap is provided between the cultivator and the cultivator 12 so as to be vertically swingable. 3. The left and right tail wheels 10, 10 are vertically and freely adjustable at an intermediate portion in the front-rear direction of the wheel mounting frame 6, and the resistance bar 11 is vertically and freely adjustable at the rear end of the wheel mounting frame 6. An axle-type rotary cultivator according to claim 1, wherein: 4. An inward cultivating claw 20 and an outward cultivating claw 2 are provided on both sides of a tilling shaft 4 which is mounted on a lower portion of a transmission case 2.
1 and a wide tilling device 15 attached thereto, and a narrow tilling device 16 with an inwardly cultivating claw 20 attached to the outside is added to both sides of the wide tilling device 15 to form a wide tilling device, or The axle-type rotary cultivator according to claim 1, wherein a narrow tilling device (16) is connected to both sides of the tilling shaft (4) to form a narrow tilling device. 5. The wide tilling device 15 or the narrow tilling device 16 has eccentric tilling claws 24 which are eccentric to the outside and release the cultivated soil inwardly on both right and left sides. 2. The axle-type rotary tiller according to 1.