JPS6398326A - Ultrasonic felling machine - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an ultrasonic tree felling machine that utilizes ultrasonic vibrations.

<Prior Art> A conventional tree felling machine has a chain saw driven by an internal combustion engine or an electric motor, and its main body is operated by hand.

<Problems to be solved by the invention> Conventional tree felling machines such as the one described in 2. generate strong noise and vibration when the countless blades of the saw cut into trees one after another, and this vibration is transmitted to the hands of the worker. There were problems such as white wax disease and other negative effects on the body of workers.

<Means for Solving the Problems> This invention has been made to solve the above problems, and includes an ultrasonic transducer built into the cutting main body, and a transducer attached to the tip of the ultrasonic transducer. A cutter having a blade that cuts wood by amplified vibration is connected to the cutter, the cutter projects from the tip of the main body, and the ultrasonic vibrator is connected to an ultrasonic oscillator.

<Function> Since the present invention has the above-described structure, the blade of the cutter is applied to the side surface of the target tree using the main body of the felling machine, and the electric vibrations generated by the ultrasonic oscillator are oscillated by the ultrasonic vibrator. It converts into mechanical vibration, amplifies this vibration with a horn, etc., and transmits it to the cutter.

As mentioned above, when the blade of the cutter is pressed against a tree while vibrating the J ivy ultrasonically, the cutter cuts into the tree while vibrating ultrasonically and quickly fells the tree.

<Embodiment> FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 denotes a main body of a felling agent made of metal or the like, and an ultrasonic transducer 2 is fixed in the rear part thereof.

A horn 5 is fixed to the tip of this vibrator 2 with a screw 4,
A cutter 6 is fixed to its tip. The cutter 6 is made of a hard, strong and thin material such as steel or ceramic.

The cutter 6 has a blade-shaped side edge that contacts a standing tree, or a sawtooth-shaped side edge so that it can easily cut into the standing tree.

7 indicates an ultrasonic oscillator. This oscillator 7 includes, for example, a piezoelectric element and a transistor made of crystal, ceramic, etc.
It is composed of a capacitor, a choke coil, etc., and generates ultrasonic electric vibrations.

This ultrasonic electric vibration is transmitted to the ultrasonic vibrator 2 by the electric cord 8, causing the vibrator 2 to vibrate mechanically,
This vibration is amplified by the horn 5 and transmitted to the cutter 6, so that the cutter 6 vibrates ultrasonically.

Furthermore, in the case of cutting down standing trees, most places such as forests are difficult to secure a power source, so a generator 10 powered by an internal combustion engine 9 is prepared and this photoelectric machine 10 is used as an ultrasonic oscillator. 7 power supply.

Therefore, it is preferable to configure a power supply device 11 that combines the ultrasonic oscillator 7 with the power generation 10 and the internal combustion engine 9 so that it can be moved freely.

In the embodiments shown in FIGS. 2 and 3, a plurality of ultrasonic transducers 2 are used to vibrate the cutter 6 with a large force.

In Fig. 2, a plurality of ultrasonic transducers 2 are connected in series in the front and back, and the direction of vibration is the front-back direction, but when each ultrasonic vibrator 2 is connected in series in the front and back in this way, the amplitude becomes large. Become.

Further, as shown in FIG. 3, if a plurality of ultrasonic transducers 2 are connected in series and a plurality of sets are arranged in parallel, strong ultrasonic vibrations can be obtained.

Furthermore, by using the ultrasonic vibrator 2 that vibrates in the lateral direction, the effect of cutting into standing trees is further improved.

In the embodiment, the ultrasonic oscillator 7 is installed at a position separate from the main body 1 and is connected to the ultrasonic vibrator 2 of the main body 1 by an electric cord 8, but the ultrasonic oscillator 7 is Main body 1
It can also be provided inside.

In this case, the electrical cord is used only for power supply, so it becomes a simple cord.

Furthermore, by replacing the cutter 6 with one of an appropriate shape, it can be used for sawing felled timber.

<Effect> As stated above, this defense is based on the fact that the ultrasonic vibrator is vibrated by the electric vibration from the ultrasonic optical vibrator, and this vibration is transmitted to the cutter to cause the cutter to vibrate ultrasonically.
It does not make any noise like a conventional chainsaw, so there is no risk of noise pollution, and it allows for flat-U work.Also, there is no vibration that can be felt by the human body, so it is easier to operate than conventional chainsaws. There is no risk of contracting incurable or incurable diseases such as white wax disease, which causes numbness in the hands, or other occupational diseases.

Furthermore, it has the effect of significantly shortening the working time compared to conventional chainsaws or manual felling methods.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing one embodiment of the present invention, and FIGS. 2 and 3 are longitudinal sectional side views of essential parts showing each combination of ultrasonic transducers.

Claims (1)

[Claims] An ultrasonic vibrator is built into the main body of the felling machine, and a cutter is connected to the tip of the ultrasonic vibrator, which has a blade that is amplified and vibrated by the vibrator to cut wood. An ultrasonic tree felling machine, characterized in that the ultrasonic vibrator is made to protrude further and is connected to an ultrasonic oscillator.