JP3105921U - Concrete bubble removal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bubble removing device capable of efficiently and reliably removing bubbles in concrete.
SOLUTION: A rod 2 is connected to a vibrator 1 for generating vibration, and a horizontal member 3 is fixed to a lower end portion of the rod. It is characterized by having.
[Selection diagram] Fig. 1

Description

  The present invention relates to a concrete bubble removing device for removing bubbles generated when concrete is driven into a formwork.

  When concrete is driven into the formwork, many bubbles are generated inside the concrete and the concrete hardens while the bubbles remain on the contact surface with the formwork, and when the formwork is removed, countless recesses are formed on the concrete surface It becomes very unsightly in appearance. In order to prevent this, it is necessary to remove air bubbles after placing concrete. Conventionally, removal of air bubbles is generally performed by a rod-shaped vibrator. A rod-shaped vibrator inserts a vibrating rod consisting of a cylinder with a diameter of about 5 cm into concrete, and vibrates finely with a vibrator connected to the upper part of the vibrating rod. And moving the bubbles upward along the vibrating rod to remove them.

  With conventional rod-shaped vibrators, bubbles near the vibrating bar can be removed, but bubbles away from the vibrating bar cannot be removed, so the vibrating bar must be repeatedly inserted and removed in concrete at short intervals. , Work efficiency is very poor. In order to remove a wider range of air bubbles at one time, there is a type in which a plate is provided on a vibrating rod so as to protrude sideways so that vibration is transmitted to the plate. However, not only is vibration not transmitted to the plate well, so that it is not possible to obtain the desired air bubble removal effect.In addition, the vibrating rod with the plate becomes heavier and the resistance when pulling it in and out of concrete increases, so rather heavy labor It has become.

  The present invention has been made in view of the above situation, and has as its object to provide an air bubble removing device capable of efficiently and reliably removing air bubbles in concrete.

  In order to achieve the above object, a concrete bubble removing device according to the present invention is provided with a rod connected to a vibrator that generates vibration, and a horizontal member is fixed to a lower end of the rod. It is characterized in that a large number of vibration members are provided side by side.

  In the concrete bubble removing device according to the present invention, a long and narrow rod-shaped vibrating member provided from the horizontal member is vibrated well in the concrete, and bubbles in the concrete can be reliably removed in a wide range. In addition, since it is lightweight and has a small resistance to pulling it into and out of concrete, the labor of the worker can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the concrete bubble removing apparatus according to the present invention includes a vibrator 1 that generates vibration, a rod 2 connected thereto, and a horizontal member 3 fixed to a lower end of the rod. A large number of elongated rod-shaped vibrating members 4 are provided side by side and hanging down. The rod 2 is attached to the tip of the vibrator 1 with bolts and nuts 7, and the portion below the rod 2 can be removed from the vibrator 1 and replaced when it becomes old. The vibrator 1 may be the same as that used for a conventional rod-shaped vibrator. For example, a vibrator that rotates a weight provided eccentrically with respect to a motor shaft by a motor at a high speed to generate high-frequency vibration is used. be able to. The vibration frequency can be, for example, 10,000 to 20,000 times per minute, and it is more preferable that the vibration frequency can be changed. The vibrating member 4 uses an elongated metal round bar of iron, stainless steel, aluminum, or the like. It is considered that the thickness of the vibration member 4 is preferably about 2 to 10 mm, particularly about 3 to 6 mm, and the length is preferably about 30 to 80 cm, particularly about 40 to 60 cm, but is not limited to this range. It is sufficient that the vibration of the vibrator 1 is transmitted to the tip of the vibration member 4. The vibrating members 4 are provided at regular intervals of 2 to 5 cm.

  Immediately after the concrete is driven into the form, the vibrating member 4 is inserted straight into the concrete 6 along the form 5 as shown in FIG. The member 4 is vibrated. Since the vibrating member 4 has an elongated rod shape, the vibration of the vibrator 1 is well transmitted, and vibrates finely at a high frequency. Thereby, liquefaction of the concrete 6 around the vibration member 4 is promoted, and bubbles are gradually moved upward along the vibration member 4 to be removed. Since a large number of vibration members 4 are provided side by side, it is possible to remove a wide range of bubbles at a time. When the removal of air bubbles at one location is completed, the vibration member 4 is pulled out of the concrete, moved laterally by the length of the horizontal member 3, and inserted into the concrete 6 and vibrated to remove air bubbles. By repeating this operation over the entire length of the formwork 5, bubble marks are reduced from the entire surface of the concrete 6.

It is a front view which shows the air bubble removal apparatus of the concrete of this invention. It is sectional drawing which shows the use condition of the air bubble removal apparatus of the concrete of this invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Vibrator 2 Rod 3 Lateral member 4 Vibration member 5 Formwork 6 Concrete

Claims (1)

A rod (2) is connected to a vibrator (1) that generates vibration, and a horizontal member (3) is fixed to a lower end of the rod. A number of elongated rod-shaped vibration members (4) are arranged side by side from the horizontal member. An air bubble removal device for concrete, which is provided in a hanging manner.

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