JP2003111502A - Tending machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily and stably movable tending machine. SOLUTION: This tending machine is designed to carry out tillage and movement by rotary tines rotating in vertical planes and perform maneuvering and operation with a handle upwardly extended from the rotary tines. In the tending machine, a connecting shaft is mounted and installed at the rear of the rotary tines. A link having left and right two auxiliary wheels mounted on the rear thereof is pivoted on the connecting shaft so that the auxiliary wheels can be rotated in the vertical planes with the connecting shaft as the center.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walk-type compact management machine mainly used for weeding work in middle tillage.

[0002]

2. Description of the Related Art This type of management machine has a rotary pawl that rotates in a vertical plane, and by rotating the rotary pawl, movement and plowing (work) are performed. In addition, a resistance rod that sticks into the soil is provided behind the rotary claw, and the depth of this resistance rod is used to adjust the working depth and the particle size of the crushed soil. With such a configuration, when moving during a non-working time, the rotary claws scrape the road surface, and the machine body undulates vertically. Moreover, since the traveling speed is slow, it is difficult to move a long distance. For this reason, they are sometimes carried by lowering them with their hands, but since the weight is too heavy to hold by hand, it was difficult to move over a long distance.

[0003]

Therefore, a moving wheel having a diameter larger than that of the rotary pawl is attached to the shaft end of the rotary shaft, and when moving, the rotary pawl is moved by the moving wheel with the rotary pawl floating above the ground. There are some which remove this wheel (for example, Unexamined-Japanese-Patent No. 5-193530).
However, according to such a device, the work is complicated due to the trouble of attachment and detachment, so that it has not been used so much in practice. The present invention has solved such a problem. An auxiliary wheel is attached to the rear of a rotary pawl, and when moving, the handle is operated to float the rotary pawl on the ground to move by the auxiliary wheel. The auxiliary wheel can replace the resistance rod.

[0004]

Under the above problems, the present invention provides a handle according to claim 1, which is cultivated and moved by a rotary pawl rotating in a vertical plane and extended from the rotary pawl. In a control machine for maneuvering operation, a connecting shaft is installed at the rear part of the rotary claw, and a link having two left and right auxiliary wheels attached to the rear part is pivotally attached to the connecting shaft to center the auxiliary wheel in the vertical plane. (EN) Provided is a management machine characterized by being rotatable.

According to the above management machine, the auxiliary wheel replaces the resistance rod. That is, when traveling in the field, since the auxiliary wheels also have a resistance to movement, the rotary claws rotate idle to exert the crushing function, but in this case, the crossing angle between the handle and the link is made small and the auxiliary wheels are rotated. When the handle is released from the claw, the handle becomes in a more sleeping (falling down) state, the weight burden ratio of the rotary claw by the auxiliary wheel is reduced, the weight of the rotary claw is relatively increased, and the plowing depth is deepened. On the contrary, when the auxiliary wheel is brought closer to the rotary pawl, the weight of the rotary pawl is reduced and the working depth becomes shallow. In addition, the two auxiliary wheels stabilize the traveling both when working and when not working. In particular, during a slight non-working movement such as a furrow movement, the rotary pawl can be slightly lifted to allow the auxiliary wheels to travel, which enables quick and easy movement.

Further, according to the present invention, in the above management machine, the handle described in claim 2 extends upward from the rear of the rotary pawl, and the connecting shaft is provided in the handle, and An inner width of the auxiliary wheel is set to be wider than a width of the rotary pawl, and means for rotating the auxiliary wheel from a position where the rotary pawl is taken into the side projection plane to a position where the auxiliary wheel overlaps with the handle is provided.

If the inner width of the auxiliary wheel is set wider than the width of the rotary pawl, traveling during work and non-work becomes more stable, and the auxiliary wheel does not follow the plowing track. Also, when the auxiliary wheel is rotated to the position where the rotary claw is taken into the side projection plane, the rotary claw can be floated on the ground while keeping the handle in the normal working position, so it can be moved with a light force and is easy. is there. Further, since the front-rear length of the whole is shortened, the center of gravity approaches the auxiliary wheels, and the pushing movement and steering are facilitated. Further, when the auxiliary wheel is rotated to a position where it overlaps with the handle, the handle falls down to a position where it almost lays down, so that it can be easily lifted by hand, and in this case, the handle can be extended and contracted. If it is configured and can be shortened to about half of the total length, the whole will shrink and it will be even easier.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a management machine showing an example of the present invention, FIG. 2 is a rear view, and FIG. 3 is a side cross-sectional view of a main part. The management machine is a working unit 1 for ground work and a working unit. 1, a handlebar 2 extending upward, an auxiliary wheel 3 provided behind the working unit 1, and the like. Among them, the working unit 1 is such that an engine 5 is attached to an upper end of a transmission cylinder 4 which is vertically installed, a rotary shaft 6 is protruded from the lower end to the left and right, and a rotary claw 7 is attached thereto.

In this case, the rotary claw 7 is the rotary shaft 6
The mounting disk 8 is fitted to the and the many rotary blades 7a are mounted thereon. Each rotary blade 7a
Is curved inward and outward when viewed from the front (within a range where it does not interfere with the transmission cylinder 4), so that a predetermined tilling width can be secured. Although the mounting disks 8 of this example are mounted one on each of the left and right rotary shafts 6, two or more mounting disks may be provided.

The transmission cylinder 4 houses a transmission shaft 9 whose upper end is connected to the output shaft of the engine 5 via a clutch mechanism (not shown). The transmission shaft 9 is attached to the lower end of the transmission cylinder 4. It rushes into the gear box 10 provided. Figure 3
2 is a side sectional view of the gear box 10. Inside the gear box 10, a worm 11 driven by the transmission shaft 4 is provided, and the worm 11 is a worm wheel 12 fixedly fitted to the rotary shaft 6. It is in mesh.

Further, in the middle of the transmission cylinder 4, a rotary shaft 6 is provided.
Is provided with a rotary cover 13 that covers the upper part of
The stay 14 is extended backward from the transmission cylinder 4 above the rotary cover 13, and the handle 2 is attached thereto. In the case of this example, the handle 2 and the transmission cylinder 4 are set to be substantially parallel to each other. As a result, when the engine 5 is driven, its output is transmitted from the transmission shaft 9 to the rotary shaft 6, so that the rotary pawl 7 can be rotated to cultivate or the like. You will need to grasp and operate it appropriately. In this example, the handle 2
The lower end of is up to just above the rotary cover 13 to prevent the two from interfering with each other.

The handle 2 of this example is a single cylinder,
The upper end has a T-shape in which horizontal portions 15 for grasping with the left and right hands are extended to both sides. In addition, the handle 2 of this example is divided into an upper handle 2a and a lower handle 2b having substantially the same length, and the upper handle 2a is slidably accommodated in the lower handle 2b. . In this case, the fastener 16 is attached to the upper part of the lower handle 2b.
Is provided, and when the tightening tool 16 is loosened, the upper handle 2a can be taken in and out to adjust the length thereof, and when tightened, the upper handle 2a is fixed.

According to the present invention, in the above management machine, auxiliary wheels 3 are attached to the rear of the working section 1. Specifically, the bracket 17 is extended backward from the lower portion of the handle 2 (near the stay 11), and the bracket 17 and the link 18 having the auxiliary wheel 3 attached to the rear portion are pivotally attached by the connecting shaft 19. In this example, a knob bolt 19a is used as the connecting shaft 19 and is received by a star nut 19b. Therefore, when the knob bolt 19a and the star nut 19b are loosely screwed together, the rotation of the auxiliary wheel 3 about the connecting shaft 19 can be adjusted, that is, the angle between the link 18 and the bracket 17 can be adjusted. , Fixed. In this example, the pin 20 that goes into the star shape of the star nut 19b
Is provided to prevent the star nut 19b from loosening.

In this case, the diameter of the auxiliary wheel 3 is the rotary pawl 7
Is set to be approximately the same as or slightly larger than the diameter of
The front and rear positions of the connecting shaft 19 are set at a position substantially in the middle of the rotary claw 7 and the auxiliary wheel 3 or slightly near the auxiliary wheel 3 side. Further, as the auxiliary wheels 3, two left and right wheels made of rubber are used. The axle 21 is extended right and left from the rear end of the link 18, and the auxiliary wheels 3 are attached to both ends of the axle 21. The inner width of the auxiliary wheel 3 is set to be larger than the width of the rotary claw 7 and the rotary cover 13. When the auxiliary wheel 3 is rotated forward, the rotary claw 7 is taken into the side projection plane. It is designed so that it can be approached. A duct 22 is connected to the carburetor of the engine 5 of the present example and extends to the vicinity of the handle 2. It avoids inhaling dusty air near the ground.

The management machine according to the present invention is provided with the above auxiliary wheels 3
Although the cultivating work is performed by using the above as a kind of resistance rod, if the auxiliary wheels 3 are two wheels on the left and right and the inner width thereof is set wider than the width of the rotary claws 7, the sprouting can be performed at the time of culturing and at the time of traveling. The running posture is stable, and the auxiliary wheels 3 do not follow the plowing traces by the rotary claws 7, so that the plowing soil is not hardened. Then, the position is adjusted according to the plowing depth required at this time. Generally, the smaller the intersecting angle α between the link 18 and the handle 2, the handle 2 lays down and the rotary pawl 7 moves further forward. Therefore, the weight load ratio of the auxiliary pawl 3 to the rotary pawl 7 is reduced and the plowing depth becomes deeper. As described above.

FIG. 4 is a side view of the management machine in which the auxiliary wheels 3 are rotated forward.
By rotating the auxiliary wheel 3 forward until the rotary claw 7 is taken into the side projection plane, the center of gravity can be brought closer to the auxiliary wheel 3, and the pushing movement and the steering are facilitated. This is a mode suitable for moving a relatively long distance. FIG. 5 shows the handle 2 with the auxiliary wheel 3 and the rotary pawl 3 separated from each other.
FIG. 3 is a side view of the management machine in a state in which the auxiliary wheel 3 is shortened, but the link 18 is rotated backward to a position where the auxiliary wheel 3 overlaps with the handle 2, and the upper handle 2 a is lower handle 2 b.
When it is housed inside, the whole becomes compact, it does not take up space for storage, and it is easy to carry.

[0017]

As described above, according to the present invention, since the management machine is provided with the two auxiliary wheels of the left and right wheels which can be freely adjusted to the rotary claws, the auxiliary wheels can replace the resistance rods. In this case, if the crossing angle of the handle and the link that attaches the auxiliary wheel is made smaller and the auxiliary wheel is moved away from the rotary pawl, the handle becomes more sleepy and the working depth becomes deeper. Conversely, the auxiliary wheel approaches the rotary pawl. Then the handle stands and the working depth becomes shallow. Of course, the presence of the auxiliary wheels stabilizes the traveling both during work and non-work, but during a slight non-working movement during work, the auxiliary pawls can be lifted to allow the auxiliary wheels to travel, which is quick and easy. You can move.

[Brief description of drawings]

FIG. 1 is a side view of a management machine showing an example of the present invention.

FIG. 2 is a rear view of a management machine showing an example of the present invention.

FIG. 3 is a side sectional view of a gear box showing an example of the present invention.

FIG. 4 is a side view of another state of the management machine showing an example of the present invention.

FIG. 5 is a side view of another state of the management machine showing an example of the present invention.

[Explanation of symbols]

2 handles 3 auxiliary wheels 7 Rotary claw 18 links 19 Connection shaft

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2B033 AA06 AB01 AB11 EC01 EC10                       ED01                 2B041 AA06 AB04 AC03 DA02 DB02                       DB06 DC09

Claims (3)

[Claims] 1. A management machine for cultivating and moving by a rotary pawl rotating in a vertical plane and maneuvering operation with a handle extended from the rotary pawl, wherein a connecting shaft is mounted at the rear part of the rotary pawl and connected. A management machine characterized in that a link having two left and right auxiliary wheels attached to the rear part is pivotally attached to the shaft so that the auxiliary wheels can rotate about a connecting shaft in a vertical plane. 2. The handle extends upward from the rear of the rotary pawl, the connecting shaft is provided on the handle, and the inner width of the auxiliary wheel is set wider than the width of the rotary pawl. The management machine according to claim 1, wherein the auxiliary wheel is rotatable from a position where the rotary claw is taken in the side projection plane to a position where it overlaps with the handle. 3. The management machine according to claim 1, wherein the handle is configured to be extendable and retractable and can be shortened to about half of the total length.