JPS6216810Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vertical hand tailor used for work such as inter-tilling and weeding, and its main purpose is to prevent the machine from swaying in the left and right direction during the work. This article relates to improvements that have been made to improve safety and ease of transportation of the aircraft.

The applicant of the present invention has proposed a vertical hand tailor in which a plurality of tilling claws are arranged in a concentric cylindrical shape and attached to the vertical output rotating shaft protruding from the bottom of the machine via a mounting plate. proposed earlier.
This vertical hand tailor performs inter-cultivation and weeding work using the tilling claws that rotate around the vertical axis in the soil, so the machine body does not vibrate in the vertical direction due to the reaction force that the tilling claws receive during work. Although this is rare, if the tiller claws come into contact with a hard object such as a stone in the soil, the machine will shake violently, which can cause injury to workers who operate the handle against this rolling. There was a problem that it increased fatigue. In addition, this type of vertical hand tailor is designed to be small and lightweight for ease of handling.
Conventionally, a safety cover for the tiller claws and support wheels were not provided. Therefore, not only was there a problem in terms of work safety, but it was also inconvenient to move and transport the aircraft.

The present invention has been developed to solve the above-mentioned problems.It prevents the machine body from rolling during mid-cultivation and weeding operations, thereby reducing worker fatigue and ensuring work safety.It also prevents accidents such as injuries caused by plowing claws. The purpose of the present invention is to provide a vertical hand tailor which is improved so as to prevent the above-mentioned problems and improve work safety, and also to be convenient for transporting the machine body.

For this purpose, the vertical hand tailor according to the present invention is provided with a pair of left and right support wheels to prevent the body from rolling during plowing work.
Fixed to the machine body so that it can take at least two positions: a position that covers both sides of the rotation trajectory of the tilling claws and supports the machine body during tilling work, and a position that extends in the front and rear direction of the machine body and supports the machine body during transport work. It is characterized by being attached via rotatable support legs.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be specifically described below based on an embodiment shown in the drawings.

Fig. 1 shows the entire vertical hand tailor. In the figure, reference numeral 1 is a drive section, 2 is a transmission section, and 3 is an operation section, which constitute a machine body. A tilling section 4 is provided at the bottom of this machine body. There is.

The transmission section 2 has a main body which is a transmission case 5 that houses a gear reduction mechanism (not shown) therein, and a connection flange 6 to which the drive section 1 is attached is provided at the center of the upper surface of the horizontally elongated transmission case 5. Connecting bosses 7 are formed on both left and right sides of the connecting flange 6 to extend parallel to each other in the front-back direction. It protrudes downward. By connecting the drive unit 1 to the upper part via the connection flange 6, the engine 9 drives the left and right output rotation shafts 8, 8 in the direction of the arrow, that is, the left output rotation shaft 8 is rotated counterclockwise. The ones on the right are configured to rotate clockwise at a constant speed in opposite directions. On the other hand, the handle 10 constituting the operation section 3 is formed into an inverted U-shape when viewed from the front and extends in the vertical direction of the aircraft body, and has a handle section 11 at its upper end, and its left and right lower ends are arranged at approximately right angles. The insertion portion 12 is formed by bending forward. The handle 10 is integrated with the mission case 5 by inserting the insertion portions 12, 12 into the left and right connection bosses 7, 7 of the mission case 5 and locking them in place.

Next, the tilling section 4 has the left and right output rotation shafts 8,
Mounting bosses 13, 13 splined to 8
A substantially horizontal mounting plate 1 with
4 and 14, four tilling claws 15 are fixedly attached with screws, respectively. That is, the mounting plate 14
is formed into a substantially cross shape in plan view with the mounting boss 13 in the center, and its four outer peripheral parts are bent downward at substantially right angles to form mounting seats 16 for the tilling claws 15 therein; The base end portions 17 of the tilling claws 15 are screwed to the mounting seat 16, and the tilling claws 15 are equally spaced on a concentric circle centered on the output rotation shaft 8, and It extends downward from the mounting seat 16 along the center direction. The left and right mounting plates 14, 14 to which the respective tilling claws 15 are attached in this manner are shifted in phase by approximately 1/4 rotation in the rotational direction so that their mounting seats 16 do not interfere with each other, and the output rotation shaft 8 is ，
8 via attachment bosses 13, 13, so that the tilling claws 15 attached to the left and right attachment plates 14, 14 overlap part of their rotation loci as shown in FIG. It is composed of That is, each tilling claw 15 has a vertical blade portion 18 continuous to its base end portion 17, as shown in FIGS. 2 and 3.
extends rearward in the direction of rotation, and at its lower end is formed a horizontal blade portion 19 that projects outward from the rotation locus of the vertical blade portion 18, and this horizontal blade portion 19
The rotation trajectories of the two overlap as described above.
The horizontal blade portion 19 is formed to have a so-called forward slope, with the front portion in the rotational direction being lower and the rear portion being higher, and is given a rake angle α. In addition, the left and right mounting plates 14, 1
4 have opposite rotation directions, so the tilling claws 15 attached to the left mounting plate 14 and the tilling claws 15 attached to the right mounting plate 14 are formed in a left-right axisymmetric shape.

Attachment seats 22 are formed on both left and right sides of the transmission case 5, with a pivot pin 20 projecting outward and a screw hole 21 bored above the pivot pin 20. Left and right support legs 24, each having a support wheel 23 pivotally attached to its lower end, are attached to the mounting seat 22 at their upper ends. That is, the support leg 24 has a receiving hole 2 at its upper end.
5, and an upper semicircular elongated hole 26 is bored around this, and this receiving hole 25 is connected to the mounting seat 22.
It loosely fits into the pivot pin 20, and the elongated hole 26
It is fixed to the mounting seat 22 by inserting a bolt 27 into the screw hole 21 and screwing it into the screw hole 21.If the bolt 27 is loosened, it can be rotated back and forth with respect to the transmission case 5, and when the bolt 27 is tightened. Accordingly, the position where the support wheels 23 cover both left and right sides of the tilling section 4,
It is designed so that it can be fixed in a position that extends in the front and rear directions of the aircraft.

In the vertical hand tailor configured in this way,
Work is started with the machine body held approximately upright by supporting the handle portion 11 of the handle 10. At that time, the left and right support legs 24 are fixed so that they are rotated slightly forward of the machine body within the range where the support wheels 23 cover both sides of the tilling section 4. By doing this, the machine body can be moved backwards. It is possible to effectively cover the part of the tiller claw that is exposed from the soil when it is tilted.

When the engine 9 is started, the left and right output rotating shafts 8, 8 are driven to rotate in opposite directions as shown by the arrows in FIG. 15 is also rotationally driven in the same direction. Due to this rotational drive,
Side blade portion 1 of each tilling claw 15 that bears the weight of the machine body
The tiller 9 cuts into the soil with its scooping angle α, cuts the soil with the vertical blade part 18 of the tilling claw 15, and tills the soil with the horizontal blade part 19.

When the tilling operation is to proceed to the front uncultivated land side, the handle portion 11 is pulled down backward to tilt the axes of the output rotating shafts 8, 8 backward. For example, when the axes of the output rotation shafts 8, 8 are tilted backward by an angle β as shown in FIG. 4, the angle that the horizontal blade portion 19 of each tilling claw 15 makes with the horizontal plane varies depending on its position in the rotational circumferential direction. At a position 1/4 turn ahead from the front end position of the rotational circumference, that is, a position where the tilling claw 15 rotates toward the rear of the machine body, the maximum value is α + β as shown in Fig. 5a. Conversely, the position 1/4 rotation behind the front end position of the rotation circumference, that is, the tilling claw 15
At the position where the
As shown in Figure b, the minimum value is α-β. As a result, the reaction force that the horizontal blade part 19 of each tilling claw 15 receives from the soil during its rotation is larger in the forward direction than in the rearward direction of the machine body, and due to this difference in reaction force, the machine body Forward thrust is obtained.

In this way, the action of the horizontal blades 19 of the tilling claws 15 moves the machine forward to perform inter-tilling and weeding work, but if the tilling claws 15 come into contact with hard objects such as stones in the soil during this work, , the reaction force acts violently on the aircraft. However, according to the present invention,
Since the left and right support wheels 23 support the machine body during tilling and weeding work, the machine body does not shake violently, and as a result, worker fatigue is reduced and accidents such as injuries are prevented. Prevented. Also, during this work, as shown in Fig. 4, the left and right support wheels 23 cover both left and right sides of the tilling section 4, especially the front part of the tilling section 4, which is exposed from the soil. , serves as a safety cover for the tilling section 4.

When moving or transporting the machine to other cultivated land after completing work such as inter-tilling or weeding, use the support legs 24.
Bolt 2 fixing it to the mounting bracket 22
By retightening step 7, the support leg 24 is rotated and fixed, for example, forward of the mission case 5, and the left and right support wheels 23, 23 are extended to the front of the machine body.
By doing so, as shown in FIG. 6, the machine body can be wheeled by holding the handle portion 11 of the handle 10.

As explained above, according to the present invention, by positioning the pair of left and right support wheels on the sides of the tilling claws, the machine body is supported by the support wheels during tilling work, so that the tilling claws do not touch stones or the like in the soil. Even if the aircraft makes contact, it will not cause violent sideways movement, thus preventing injuries caused by this sideways movement and reducing fatigue. Furthermore, the support wheels serve as a safety cover by covering both sides of the rotation locus of the rotatably driven tilling claws, so that the safety of tilling work can be ensured without providing a separate safety cover. Furthermore, since the support wheels can be fixed at positions that extend in the longitudinal direction of the machine body, the machine body can be laid down and run on wheels, which is convenient for moving and transporting the machine body.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a vertical hand tailor showing an embodiment of the present invention, Fig. 2 is an overall plan view of the tilling section, Fig. 3 is a perspective view of the tilling claw, and Fig. 4 shows the tilling operation. An explanatory diagram, FIG. 5 is an explanatory diagram showing the change in the angle that the horizontal blade part of the tiller makes with the horizontal plane when the axis of rotation is tilted backward, and FIG. 6 is an explanatory diagram of the movement of the machine body and the transportation work. 1... Drive section, 2... Mission section, 3... Operation section, 4... Cultivating section, 5... Mission case,
8... Output rotation axis, 10... Handle, 11...
Handle portion, 14...Mounting plate, 15...Tilling claw, 1
9...Side blade portion, 20...Pivot pin, 21...Screw hole, 22...Mounting seat, 23...Support wheel, 24
... Support leg, 25 ... Receiving hole, 26 ... Long hole, α ...
...scooping angle, β...angle of inclination.

Claims (1)

[Scope of utility model registration request] A plurality of tilling claws are arranged and attached in a circular cylindrical shape to a vertical output rotating shaft protruding from the bottom of the machine body, and the tilling claws are driven to rotate in the soil by the drive of the output rotating shaft to till the soil. In a vertical hand tailor, which tilts its axis of rotation backward during work to obtain forward thrust from the forward reaction force received by the tilling claws, the machine body is provided with a pair of left and right support wheels, and the support wheels The machine is designed so that it can take at least two positions: a position that covers both left and right sides of the rotation locus of the tilling claws to support the machine during tilling work, and a position that extends in the front and rear directions of the machine and supports the machine during movement and transportation. A vertical hand tailor that is attached via support legs that can be rotated and fixed.