JPH031559Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an improvement of a concrete vibrator, and more specifically, to attenuate as much as possible the vibrations transmitted to the hands and fingers of workers during concrete compaction work. The invention relates to a concrete vibrator.

[Prior art]

In forming concrete structures, it is widely practiced to insert a rod-shaped vibrator body into poured fresh concrete and vibrate it to discharge air bubbles in the fresh concrete and compact it.

By the way, in this kind of compaction work, the worker uses an abbreviation of a flexible hose connected to the vibrator body.
Since the work is carried out by holding the vibrator at a position of 1m to 2m, the vibration of the vibrator itself is transmitted to the worker's hands and fingers through the flexible hose, which not only reduces work efficiency but also reduces work efficiency. There was a problem that it caused occupational diseases such as white wax disease.

Therefore, as a result of extensive research, the inventor of the present invention installed a vibration-dampening rod at a predetermined position of a flexible hose connected to the vibrator body, and the vibration transmitted from the vibrator body is damped by the heavy rod. It has been found that the above-mentioned problems can be overcome by configuring the device to absorb

[Purpose of invention]

The object of the present invention is to provide a concrete vibrator that damps unnecessary vibrations as much as possible and allows work to be carried out efficiently.

[Summary of the idea]

The present invention provides a concrete vibrator in which a cylindrical flexible gripping part is connected to a vibrator body formed by connecting a vibrating part and a motor drive part, and the gripping positions of the vibrator body and the flexible gripping part are fixed. The feature is that a heavy peg for vibration damping is placed inside the grip between the two.

In this case, by arranging the heavy studs inside the grip at predetermined intervals, the flexibility will not be hindered, and the synergistic effect of their mutual vibration and absorption will be extremely effective at damping unnecessary vibrations. can be done.

[Preferred embodiment]

Next, preferred embodiments of the concrete vibrator according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, a concrete vibrator 1 according to the present invention includes a vibrator body 2 that is inserted into fresh concrete to apply vibrations,
The vibrator body 2 includes a flexible grip portion 3 connected to the vibrator body 2.

The vibrator body 2 is an unbalanced weight 4
The vibrator 5 is connected to a drive shaft of a motor 6 and is housed in a casing 7, thereby forming a rod-shaped vibrator with a built-in motor. The motor 6 is attached to the end of the casing 7 on the motor 6 side.
An opening 9 for leading out the electric wire 8 is provided, and a flexible grip 3 made of, for example, a rubber hose is connected to this opening 9.

The flexible grip part 3 is set to a convenient length and diameter for operating the vibrator main body 2,
A cylindrical heavy stud 11 is fixed at a predetermined interval inside the vibrator body 2 at a predetermined location, that is, between the gripping position where a worker normally works and the engaging end portion 10 of the vibrator body 2. In addition, an electric wire 8 led out from the motor 6
is inserted through the heavy peg 11, and its end is connected to a power supply device (not shown) via the other end of the flexible grip portion 3.

When using the concrete vibrator constructed in this way, as shown in FIG. Hold the part 1 m to 2 m away from the anchoring end 10, energize the drive motor 6, and vibrate the fresh concrete with the vibrator body 2 to discharge and remove air bubbles. The vibrations transmitted to the worker's hand via the flexible gripping part 3 are damped as much as possible by the mutual vibration and absorption effect of the plurality of heavy pegs 11 disposed on the flexible gripping part 3.

[Effect of idea]

As mentioned above, in the concrete vibrator according to the present invention, the vibrations transmitted to the flexible grip during use are sequentially absorbed by the heavy pegs placed at predetermined positions on the grip, so that the vibrations transmitted to the fingers, etc. are reduced. Not only can this prevent the cause of occupational diseases such as white wax, but the vibration of the vibrator itself can be strengthened to improve work efficiency.

In addition, since the plurality of heavy studs provided on the flexible grip are spaced apart, the flexibility of the grip is not hindered, and the heavy studs are fixed inside the cylindrical body of the flexible grip. Therefore, it has the advantage that it does not hinder workability.

Although the preferred embodiments of the concrete vibrator according to the present invention have been described above, the present invention is not limited to these embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a preferred embodiment of the concrete vibrator according to the present invention, and FIG. 2 is an explanatory view showing the concrete vibrator shown in FIG. 1 in a usage state. In the figure, 1... concrete vibrator, 2... vibrator main body, 3... flexible gripping section, 4... unbalanced weight, 5... vibrating section, 6... motor, 7... casing, 8... Electric wire, 9... opening, 10... anchoring end, 11...
Heavy weight.

Claims (1)

[Claims for Utility Model Registration] (1) A concrete vibrator comprising a vibrator body formed by connecting a vibrating part and a motor drive part and a flexible gripping part connected to the vibrator body and the flexible gripping part. A concrete vibrator characterized by a vibration-dampening heavy rod installed inside the gripping portion between the gripping position and the gripping position of the concrete vibrator. (2) The concrete vibrator according to claim 1, wherein the heavy studs disposed inside the gripping portion are disposed at predetermined intervals.