JP2004089084A - Walking type tiller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a walking type tiller solving a problem that in a conventional tiller, when a rotation body is used for a resistance body and for a tail wheel, the conventional tiller requires a large space and has difficulty in operation and when the tail wheel is reversed close to the bosom of an operator, tail wheel is liable to stick soil to the clothing of the operator and the conventional tiller has deteriorated operability. <P>SOLUTION: The walking type tiller has constitution that a cylindrical body 32 having a vertically slidable mechanism is arranged behind a transmission case 1, an arm member 4 for supporting a tail wheel 5 covered with a rotary cover 8 is attached to the lower part of the cylindrical part 32, a vertically slidable cylindrical body 34 is installed also at the lower part of the arm member 4 and a resistance body 6 is attached to the cylindrical body 34. In the cover 8, the resistance body and the tail wheel are rotated, the ground position of the tail wheel is vertically changed to the bottom part position of the resistance rod. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a configuration of a walking cultivator, and more particularly to a configuration of a walking cultivator.
[0002]
[Prior art]
Conventionally, as shown in Japanese Utility Model Laid-Open Publication No. 7-18501, a walking-type cultivator integrally supports a resistance rod 15 serving as a resistor and a tail wheel 13 for setting a cultivation depth on a rotary plate. By rotating the rod 180 degrees, there were some which used the resistance bar 15 and the tail wheel 13 properly.
[0003]
[Problems to be solved by the invention]
Although the resistor of the cultivator is to prevent the so-called dashing phenomenon that occurs when the tilling claw is rotated in the normal direction in a hard field, the conventional cultivator uses a resistor and a tail wheel properly. A large space was required and operability was difficult. For this reason, especially when a resistance bar is used, the tail wheel must be turned upside down. However, there is a problem that the soil of the tail wheel easily adheres to the clothes of the worker and the operability is poor.
[0004]
[Means for Solving the Problems]
In view of the above problems, the present invention has taken the following technical measures.
That is, according to the first aspect of the present invention, a transmission case (1) is provided at the center position of the lateral width of the fuselage, and a tilling shaft (3) having a plurality of tilling claws (2...) Is provided below the case (1). In the walking type cultivator which is provided with the cover and the upper and rear sides of the cultivating claws (2 ...) with the cover (8),
An arm member having a tubular body (32) having a vertical slide mechanism behind the transmission case (1), and a tail wheel (5) covered with the cover (8) below the tubular body (32). In addition to (4),
A walking type cultivator characterized in that a cylindrical body (34) having a vertical slide mechanism is provided below the arm member (4), and a resistor (6) is provided on the cylindrical body (34).
(Action)
In the walking type cultivator constructed as described above, the arm member (4) is moved up and down below the cover (8) to change the height of the tail wheel (5) and the resistor (6) integrally. Then, the resistor (6) is independently moved up and down to change the relative height with respect to the tail wheel (5).
[0005]
According to the second aspect of the present invention, a transmission case (1) is provided at the center position of the lateral width of the body, and a tilling shaft (3) having a plurality of tilling claws (2 ...) is provided at a lower portion of the case (1). In the walking type cultivator which is provided with the cover and the upper and rear sides of the cultivating claws (2 ...) with the cover (8),
A cylinder (32) having a vertical slide mechanism is provided at the rear of the transmission case (1), and an inclined shaft (7) covered with the cover (8) is provided below the cylinder (32). ,
The walking type cultivator is characterized in that the tail wheel (5) and the resistor (6) are supported so as to be integrally rotatable around the tilt axis (7).
(Action)
In the cultivator constructed as described above, the tail wheel (5) and the resistor (6) rotate integrally within the cover 8.
[0006]
【The invention's effect】
Thus, according to the first aspect of the present invention, the tail wheel (5) and the resistor (6) or the resistor (6) are smaller than the conventional configuration, for example, in a small space without requiring front, rear, left and right spaces. Can be moved up and down independently. In addition, since the tail wheel (5) and the resistor (6) are covered with the cover (8), there is no possibility that soil adheres to the worker during the work or during the non-work, and the operability is improved. Is good. Further, the height of the resistor (6) can be adjusted independently, and the work can be performed at a cultivation depth according to the hardness and softness of the soil and the planting crop.
[0007]
Also in the second aspect of the present invention, since the inclined shaft (7) is provided at the lower end of the arm member (4), the height of the tail wheel (5) and the resistor (6) can be switched in a small space. At the same time, this switching operation is also performed in the cover, so that the adhesion of soil to the operator can be reduced.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a tilling state by downcut when the tilling claw 2 is rotated in the normal direction, FIG. 2 shows a tilling state by upcut when the tilling claw 2 is rotated in the reverse direction, and FIG. This shows the state during traveling.
[0009]
First, the overall configuration of the walking cultivator T will be described.
As shown in FIGS. 1 to 3, the walking-type cultivator T has an engine mounting frame 11 disposed at a front portion of the fuselage, an engine E provided at the frame 11, and a bumper serving also as a front portion of the frame 11. Weight 12 to be attached. Further, a fuel tank 13 is provided above the engine E, and the fuel in the tank 13 is fed into a combustion chamber of the engine E via a pump 14, a filter 15, and the like.
[0010]
Further, left and right wheels 16, 16 are provided below the engine mounting frame 11, so that the rotation of the output shaft 17 of the engine E is transmitted and driven. On the side of the engine E, there is provided a chain case 20 in which a chain, a sprocket and the like are provided, and the rotational power of the engine E is transmitted to a traveling power transmission case (not shown) for supporting the wheels 16 and a tilling device. The power is transmitted to each power transmission mechanism in the power transmission case 1.
[0011]
In addition, a handle 22 having a loop shape in a plan view is provided at a rear portion of the transmission case 1 for tilling, and the handle 22 supports a so-called deadman clutch lever 25 that constantly biases the traveling clutch in a disengaging direction. The clutch is engaged only while the lever 25 is being operated downward.
[0012]
Further, a transmission lever 24 is provided above the handle 22, and the transmission in the tilling transmission case 1 is switched by rotating the lever 24 to switch the working speed and the rotation direction of the tilling claw 2. Has become.
Next, the tilling unit 30 of the cultivator T will be described.
[0013]
The tilling unit 30 of the cultivator T has the tilling transmission case 1 arranged in the center of the machine body right and left, and supports the tail wheel 5 serving as a tilling depth setting tool, the rotary cover 8, and the plurality of tilling claws 2 in the case 1. The tilling shaft 3 to be mounted is attached.
The tail wheel 5 supports the rotary frame 31 rearward on the upper part of the tilling transmission case 1 and has a cylindrical body 32 (in the rear end portion of the rotary frame 31) having a screw groove serving as a slide mechanism inside. The first tubular body) is mounted in the up-down direction, and the tubular body 32 has a thread groove for engaging with the thread groove, and the arm member 4 for attaching the tail wheel 5 to the lower end thereof. . Further, a handle 33 is provided on the upper part of the cylindrical body 32, and by rotating the handle 33, the screw groove on the arm member 4 side is rotated to slide the arm member 4 up and down. I have.
[0014]
Accordingly, the arm member 4 can be adjusted up and down with respect to the tilling transmission case 1, and the height of the tail wheel 5 can be adjusted to adjust the tilling depth.
A resistance rod mounting tube 34 (second cylindrical body) having a pin hole 34a is provided below and in front of the arm member 4 of the tail wheel 7, and the arm of the resistance rod 6 serving as a resistor is also provided on the arm. A plurality of pin holes 9 are provided in the vertical direction, the arm portion of the resistance bar 6 is vertically slidably communicated with the resistance rod mounting tube 34, and the pins are passed through the pin holes 34a, 9 of both members. The rod 6 is configured to be fixed. At this time, by changing the pin hole 9 on the resistance bar 6 side up and down, the height of the resistance bar 6 with respect to the tail wheel 5, more specifically, the difference between the lower end position of the resistance bar 6 and the grounding position of the tail wheel is adjusted. Can be changed.
[0015]
The plurality of pin holes 9 opened in the resistance bar 6 are located at a position higher than the lower end of the tail wheel 5, that is, from a position above the soil surface and in a non-ground state, from the lower end of the tail wheel 5. Is set in a lower position, that is, at a position below the soil surface, and can be positioned in a plurality of stages up to the soil entry position.
[0016]
In the cultivator constructed as described above, the resistance bar 6 is set in a state of protruding into the soil during tilling by downcut, thereby preventing dashing and plowing the remaining tillage. In the tilling work by up-cutting, the resistance bar 6 is set to a non-ground position so that the resistance bar 6 does not have excessive resistance. Further, when moving on a road or the like, the resistance bar 6 is set at a position higher than the tail wheel 5, and the arm member 4 of the tail wheel 5 is greatly extended with respect to the transmission case 1, specifically, the cylindrical body 32. , The tilling claw 2 is also in a non-ground state.
[0017]
In addition, as another form of this invention, as shown in FIG. 2, the tilling claw 2 of the said tilling part is comprised in the normal rotation nail 2a and the reverse rotation nail 2b, The shape or arrangement | positioning of the same nail is changed, 33 may be configured to be electrically driven by an actuator.
As a result, the tail wheel 5 and the resistor 6 or the resistor (6) can be moved up and down independently within the cover without requiring any operation space in front, rear, left and right. The operability is good by preventing the adhesion of water. In addition, the height of the resistor 6 can be independently adjusted, and the cultivation depth can be appropriately set according to the hardness of the soil and the crop to be planted.
[0018]
Next, the second embodiment of the present invention will be described with reference to FIGS. The description of the same parts as the tiller is omitted.
The difference from the cultivator is the arm member 4 of the tilling unit 30. Here, a lower inclined shaft 7 is provided at the lower end of the arm member 4, and the tail wheel 5 and the resistor are provided on the inclined shaft 7. The rotary cylinder 36 having the resistance pin 6 'is fitted.
[0019]
The inclined shaft 7 and the rotary cylinder 36 are provided with pin holes penetrating in the left-right direction, and the rotary cylinder is rotated by 180 degrees around the axis so that the fixing pins 37 pass through both pin holes. 36 can be fixed to the tilt axis 7.
In the cultivator configured as described above, when the cultivator T is operated in the downcut direction, as illustrated in FIG. 6, the operation is performed with the resistance pin 6 ′ set at a position lower than the tail wheel 5. 7, the tail wheel 5 is switched to a position lower than the resistance pin 6 'to work or move as shown in FIG.
[0020]
Thereby, the height of the tail wheel 5 and the resistor 6 can be switched in a small space. Further, when the postures of the inclined shaft 7, the tail wheel 5, and the resistor 6 are switched inside the rotary cover 8, mud or the like does not fall toward the operator, so that operability is good.
[Brief description of the drawings]
FIG. 1A is an overall side view of a cultivator during down-cut tilling.
(B) Partial rear view.
FIG. 2 (A) is an overall side view at the time of up-cut tilling.
(B) Partial rear view.
FIG. 3A is an overall side view of the cultivator when traveling on a road, and FIG.
FIG. 4 is a plan view showing a positional relationship between a tilling part, a resistance rod, and a tail wheel in another embodiment.
FIG. 5 is an overall side view of a tiller of another embodiment.
FIG. 6 is an enlarged view of a tilling part when a resistance pin is set to a lower position.
FIG. 7 is an enlarged view of a tilling part when a tail wheel is set at a lower position.
[Explanation of symbols]
T Walking type tiller 1 Transmission case 2 Tilling claw 3 Tilling shaft 4 Arm member 5 Tail wheel 6 Resistance rod 7 Tilt axis 8 Rotary cover 9 Pin hole

Claims (2)

A transmission case (1) is provided at the center position of the right and left widths of the body, and a tilling shaft (3) having a plurality of tilling claws (2...) Is protruded below the case (1). 2 ...) with a cover (8) covering the top and back of
An arm member having a tubular body (32) having a vertical slide mechanism behind the transmission case (1), and a tail wheel (5) covered with the cover (8) below the tubular body (32). In addition to (4),
A walking type cultivator, wherein a cylindrical body (34) having a vertical slide mechanism is provided below the arm member (4), and a resistor (6) is provided on the cylindrical body (34). A transmission case (1) is provided at the center position of the right and left widths of the body, and a tilling shaft (3) having a plurality of tilling claws (2...) Is protruded below the case (1). 2 ...) with a cover (8) covering the top and back of
A cylinder (32) having a vertical slide mechanism is provided at the rear of the transmission case (1), and an inclined shaft (7) covered with the cover (8) is provided below the cylinder (32). ,
A walking type cultivator, wherein the tail wheel (5) and the resistor (6) are supported so as to be integrally rotatable around the inclined axis (7).

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