JPS5925611A - Self-running reamer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a brush cutter used to cut undergrowth necessary after planting trees.

Conventionally, when carrying out the above-mentioned grass cutting work, a portable brush cutter equipped with an engine and a disc type cutting device driven by the engine has been generally used. The relatively heavy brush cutter is suspended from the human body and moved from side to side to cut the grass, resulting in severe work fatigue.Moreover, from the viewpoint of workability, the cutting area of the cutting device is small. Since it is limited to certain items, it has the disadvantage of low work efficiency.

The present invention aims to improve the above-mentioned drawbacks, simplify the structure and downsize the machine, and at the same time suppress deformation and damage caused by collisions of the reaping device with external objects as much as possible. have a purpose.

The characteristic configuration of the brush cutter of the present invention, which has been made to achieve such an object, is that a mower linked to the prime mover 0 [ The cutting tool 16 is
It is located in a vertical plane passing through the edge of the running wheel (I) (J) or at a point protruding slightly forward of it.

In other words, by installing the reaping device on a self-propelled machine body equipped with a prime mover and running wheels, there is no need for the labor of suspending and supporting a comparatively heavy brush cutter as in the past. Because of this, it is now possible to use a reaping device with one set of large endless reaping speeds, making it possible to perform the underbrush cutting work that is required after tree planting with less fatigue and with high efficiency. .

In addition, by arranging the reaping device so that most of the reaping device is located directly above the running wheels, the reaping device is prevented from colliding with external objects such as stones or ridges. It can also be configured to be used as a protector to prevent this, and therefore, there is no need to separately install a special protector, and the reaping device can be installed as described in IIIJ, simplifying the structure and making the captain more compact. However, every effort has been made to suppress deformation and damage caused by collisions between the reaping device and foreign objects as much as possible.

Embodiments of the present invention will be described below with reference to the drawings.

To configure a walking type self-propelled brush cutter, one axle il+ is supported through the ilJ part of the engine (El), which is an example of the prime mover, and a tJiJ gQ engine (from El to the axle (1) is supported). A transmission case (goods) in which a main clutch (2) and a speed reduction mechanism (not shown) are interposed in the transmission VJ system.
All serially installed, this mission case (NO color engine)
A steering handle (3) is installed rearward through the upper part of El, and a pair of left and right wide 11 running wheels +41, +41 are attached to the protruding shaft portion of the axle (1), and furthermore, these running wheels +41, Directly above 141, 1
Endless episodes linked to the 1st story engine fEl! The IIJ type reaping device (5) is equipped with a cutting action part that has IfJ running wheels +
41, a little more nf than the vertical plane passing through the 10 edge of 141
It is arranged so as to protrude in the J direction.

And 011 traveling vehicle transport t41, +41 upper 81
The reaping device (6) must be installed at the same time! :11ifJ Note: Due to the fact that the running wheels +41 and +41 are wide, and the mission case M located between these two running wheels 14+ and +41 acts as a protector for the reaping device (5), It can effectively prevent the cutting and harvesting device (5) from colliding with obstacles such as stones and causing damage, making it convenient to use in areas with many obstacles such as mountainous areas. Ta.

1] The reaping device (5) is constructed as follows.

That is, on both left and right sides of the support frame (θ) connected to the mission case M marked +ifJ, there is an axis +71 in the vertical orientation.
, Bearing case t that rotatably supports +7+
8+, (81) is fixed, and a chain (10) is hung across the sprocket 491° (9) attached to the lower end of both rotating shafts (7), (7) in g+I. In (10), the cutting blades (111. 11... A pair of band-shaped receiving plates (13, +
121 t till E Fixed to the mission case (goods).

In addition, a power take-off shaft (Al) linked to the deceleration mechanism in the mission case 60 is protruded from the upper part of the rear end of the mission booth. The sprocket i+51 fixed to the upper part of one of the rotation shafts (7) is stretched to the chain 06), and this transmission tjl
J chain 116) and sprocket l-[41, (15
1 is provided with a safety cover t171.

When the main clutch (2) is engaged, the driving rotational force of the engine (El) is transferred to the axle shaft il+ via the deceleration mechanism.
At the same time, the power is transmitted to the cutting blade (11) through the power take-off shaft (131) and the front chain (+61).
The mowing is carried out in cooperation with the belt-shaped receiving plate (121).

In addition, rrr in the figure is a fuel tank.

A part of the brush cutter according to the embodiment described above may be modified as follows.

(1) Use an electric or mechanical motor instead of an engine.

(II) A plurality of fixed receiving blades having the same shape as the cutting blades (Il+) are provided in place of the band-shaped receiving plate opening 2 described above.

Providing such a fixed receiver blade can improve cutting performance (9) and 7) keep the tip of the fixed receiver blade and the tip of the cutting blade in the same position (thereby preventing damage to the tree). There is an advantage to being able to suppress this as much as possible.

(ITI) IIJ The v-cutting portion of the reaping device (5) is provided on the lead +ftjn passing through the front edge of the running wheel (4).

(IV) The +IIgd axle il+ is divided into two parts in the left and right direction, and a steering clutch is interposed in the transmission system to each of these axles fl+ and +11. When configured in this way, there is an advantage that the aircraft can easily turn, etc., without swinging the steering wheel, and with simple operations such as the use of the steering clutch.

(V) A dedicated clutch is interposed in the transmission system to the reaping device (6).

[■] A stepped or continuously variable transmission is interposed in the common transmission system to the reaping device (6) and the running wheels (4).

[■] Transmission system to the reaping device (5) and running wheels (4)
), a stepped type or thin film type transmission is interposed in each transmission system.

[■] The IaJ force extraction shaft 1131 is configured in a 1':M configuration so that it can be driven in forward and reverse directions. In this case, it is possible to mow to the right or left with respect to the direction of travel, allowing reciprocating mowing.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of the self-propelled brush cutter fU, FIG. 2 is a partially (2) large rear view, and FIG. 3 is a plan view. fEl... Primordial machine, (4)... Running wheel, (5)
...Reaping device.

Claims (1)

[Claims] ■ Original ffl (at the front of El and directly above the running wheels (4) driven by this, etI original 1
111J machine (reaping device (6) connected to El,
A self-propelled brush cutter characterized in that the cutting action section (7) is arranged in a vertical plane passing through the 1ilJ edge of the running wheel (4) in IIQ, or in a position protruding slightly in the tlJ direction from that vertical plane. . (2) The self-propelled brush cutter according to claim 0, wherein the original vJ machine tEl is an engine. ■ Claim 0 or 0, in which the nrlE running wheels (4) are comprised of a pair of left and right wide [1] running wheels.
The self-propelled brush cutter described in section.