KR19990002499U - Concrete pouring vibrator - Google Patents

Abstract

The present invention relates to a vibrator for concrete placing, which is configured to vibrate the wet material mixed with cement and sand and to be filled well inside the formwork, for example, by vibrating the concrete during concrete pouring. It aims to be easy to move, to generate effective vibration, and to improve durability.

The vibrator of the present invention includes a small motor 1, a vibration shaft 2 extending from the shaft of the motor to be rotatably supported, a vibration case 3 surrounding the motor and the vibration shaft, and the vibration case. It includes a handle bar (5) extending from the motor end of the passage through which the power supply line 11 of the motor passes. The vibrating case 3 includes a nipple 31 surrounding a portion of the motor 1 and the vibrating shaft 2, and a cap 32 coupled to the distal end of the nipple 31 to surround the vibrating shaft 2. And a stopper 33 coupled to the rear end of the nipple 31 and surrounding the rear end of the motor 1. The vibration generating disc 21 may be eccentrically inserted into the tip of the vibration shaft 2. Instead of the vibration generating disc 21, the vibration generating protrusion 22 may protrude on one side of the outer circumferential surface of the tip of the vibration shaft 2.

Description

Concrete pouring vibrator

The present invention relates to a wetted concrete material and a vibrator for placing concrete, such that the cement and sand are mixed with the wet material and the gravel so as not to be separated, for example, by vibrating the concrete. It relates to a concrete pouring vibrator incorporating a motor.

In the case of concrete pouring, which is generally performed in civil engineering or building construction, the formwork for placing concrete is first installed by using plate and reinforcing bars, and then the concrete mixed with cement, sand, and gravel is poured into the formwork for curing. . In the case of concrete having a low slump, when the concrete is caught, for example, in reinforcing bars, the concrete is prevented from having a uniform strength after curing since the wet material and gravel, which is a mixture of sand and cement, are separated. This phenomenon is exacerbated when building vertical walls. In other words, the gravel is gathered and cured parts are not easy to break because not only the large gap between the gravel, but also the wet material to adhere the gravel to each other. In addition, the wet material gathered a lot, the hardened part is hardly gravel because there is little strength.

Therefore, a vibrator has been proposed that can be applied to the concrete in order to reduce the voids in the concrete by mixing the wet material and the gravel well while pouring the concrete during or after concrete pouring.

Representative of such a conventional vibrator is the one disclosed in Korea Utility Model No. 95-8891.

The conventional vibrator is made of a structure for transmitting the power to rotate the rotary shaft from the motor shaft through the flexible shaft to vibrate the vibrating rod, the flexible shaft is not only torsional strength but also low fatigue strength may be easily broken. And, considering that the length of the vibrating rod is about 60 to 70 centimeters and the length of the flexible shaft is about 4 meters, there is a greater risk of the flexible shaft being broken. There is a fear that not only the flexible shaft but also the flexible hose is deteriorated by friction. In addition, the structure of the vibrator is complicated, thereby increasing the manufacturing cost. In addition, by using a relatively large motor, the vibrator is heavy and inconvenient to place concrete while moving the vibrator, and it is more inconvenient to move the vibrator because the flexible hose is bent and the vibrating rod sags downward. In addition, since the rotary shaft generating the vibration is a cantilever type, the vibration generated is weaker than the output of the motor, and the vibration is further weakened because the power transmission loss occurs in the process of transmitting power through the flexible shaft.

The present invention has been made in view of the above-described conventional problems, and aims at simplifying the structure to easily move the vibrator and improving durability.

Another object of the present invention is to provide a vibrator that can effectively generate vibration.

1 is a perspective view showing a first embodiment of the vibrator according to the present invention.

2 is a cross-sectional view showing a first embodiment of the vibrator according to the present invention.

3 is a cross-sectional view showing a second embodiment of the vibrator according to the present invention.

4 is a cross-sectional view showing a third embodiment of the vibrator according to the present invention.

5 is a sectional view showing a fourth embodiment of the vibrator according to the present invention.

Explanation of symbols for the main parts of the drawings

1: Motor 2: Vibration Shaft

3: vibration case 4: bearing

5: handle bar 11: power supply cable

12: connection code 21: vibration generating disk

22: vibration generating protrusion 31: nipple

32: cap 33: stopper

51: switch

In order to achieve the above object, the vibrator according to the present invention, a small motor, a vibration shaft extending from the shaft of the motor supported by the bearing, a vibration case surrounding the motor and the vibration shaft, and the motor of the vibration case Extending from one end and the inside is characterized in that the power supply line of the motor comprises a handle bar.

A connection cord extending from the power supply line is connected to the end of the handle bar, and a switch for driving and stopping the motor is preferably installed near the handle of the end of the handle bar.

In addition, according to the vibrator of the present invention, in order to generate a large vibration may be further included a vibration generating disk which is eccentrically inserted into the front end of the vibration shaft. The vibration generating disk is preferably inserted inclined with respect to the longitudinal direction of the vibration axis for more effective vibration generation.

In addition, according to the vibrator of the present invention, a vibration generating protrusion may be formed on one side of the outer circumferential surface of the tip of the vibration shaft for effective vibration generation. This vibration generating protrusion is also preferably inserted inclined with respect to the longitudinal direction of the vibration shaft.

When placing concrete by vibrator according to the present invention configured as described above, connect the connection cord to a power source, and then press the switch to drive the motor to grab the handle of the handlebar and move the vibrator while applying vibration to the poured concrete. Allow the material and gravel to mix evenly without separating.

Other features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Example 1

1 and 2 shows a first embodiment of the vibrator according to the present invention.

As shown in the figure, reference numeral 1 preferably uses a relatively small capacity motor as the motor. The vibrating shaft 2 is connected to the shaft of the motor 1. The shaft of the motor 1 may protrude out of the case of the motor 1 and may be employed as the vibration shaft 2.

On the other hand, reference numeral 3 denotes a vibration case, which surrounds the motor 1 and the vibration shaft 2. The vibrating case 3 includes a nipple 31 surrounding a portion of the motor 1 and the vibrating shaft 2, a cap 32 coupled to the tip of the nipple 31 to surround the vibrating shaft 2, and the It comprises a stopper 33 is coupled to the rear end of the nipple 31 wraps around the rear end of the motor (1). The bearing 4 is inserted into and fixed to the inner peripheral surface of the tip side of the nipple 31, and the bearing 4 is supported by a substantially interruption of the oscillation shaft 2.

A through hole is formed in the center of the stopper 33 so that the handle bar 5 is connected, and the stopper 33 and the handle bar 5 may be integrally formed. The handle bar 5 is hollow, and thus, the power supply line 11 may be connected to the motor 1 through the through hole of the hollow and the stopper 33 of the handle bar 5. And, the end of the handle bar (5) is used as a handle and a protruding pattern is formed on the outer circumferential surface to facilitate gripping, it is preferable that the switch 51 for driving and stopping the motor 1 is installed in the vicinity of the handle Do.

In addition, the end of the power supply line 11 is preferably connected to the connection cord 12, the power supply line 11 and the connection cord 12 may be integrally formed.

In addition, the vibration case 3 is preferably made of a metal material, the handle bar 5 may be made of a variety of materials, such as synthetic resin, rubber or metal.

Example 2

3 shows a second embodiment of the vibrator according to the present invention.

The vibrator of the second embodiment is the same as the vibrator of the first embodiment described above except that the vibration generating disc 21 is inserted into the tip of the vibration shaft 2. The vibration generating disc 21 may be eccentrically inserted into the front end of the vibration shaft 2 so that vibration may be largely generated by the eccentric rotation of the vibration generating disc 21 when the vibration shaft 2 is rotated. In Example 2, the vibration generating disk 21 is inserted perpendicularly to the longitudinal direction of the vibration shaft 2.

Example 3

4 shows a third embodiment of the vibrator according to the present invention.

The vibrator of the third embodiment has the same structure and operation as the vibrator of the above-described second embodiment except that the vibration generating disc 21 is inserted inclined with respect to the longitudinal direction of the vibration shaft 2 for more effective vibration generation. Therefore, detailed description thereof will be omitted.

Example 4

5 shows a fourth embodiment of the vibrator according to the present invention.

The vibrator of the fourth embodiment has a vibration generating protrusion 22 on one side of the outer circumferential surface of the tip of the vibrating shaft 2 so that the vibrator of the vibrators of the second and third embodiments described above can have the same effect. It is formed. The vibration generating protrusion 22 may not only protrude vertically with respect to the longitudinal direction of the vibration shaft 2 but may also protrude obliquely as shown in the drawing. In addition, the vibration generating projections 22 are formed on the outer circumferential surface of the vibration shaft 2 on the opposite side where the vibration generating projections 22 are formed so that the vibration shaft 2 does not excessively rotate by adjusting the balance when the vibration shaft 2 is rotated. A smaller vibration generating protrusion 23 may be added.

When placing concrete by vibrator according to the present invention configured as described above, connect the connecting cord 12 to a socket such as an outlet, and then hold the handle of the handle bar 5 and press the switch 51 to press the motor 1. Drive the vibration case (3) in the concrete to be cast while moving the vibration to the concrete. That is, the vibration bar 2 is rotated by the driving of the motor 1 to generate a vibration and the vibration is transmitted to the concrete to be poured through the vibration case (3). Therefore, the wet material and the gravel in the concrete to be poured by this vibration is not only separated in a well mixed state, but also the voids in the concrete can be reduced, the concrete can be firmly cured.

Effects of the vibrator according to the present invention configured as described above are as follows.

First, since the small motor 1 is built into the vibration case 3 to exclude the means for supporting the motor 1, the structure is simplified, thereby reducing the manufacturing cost and easily moving the vibrator.

Second, since the vibrating shaft 2 has a structure directly connected to the shaft of the motor 1 and has a large torsional strength, durability is improved, so that the vibrating shaft 2 may not be broken, and the vibrating shaft 2 is rotated. Since the power transmission loss for the generation hardly occurs, the vibration generating efficiency is improved.

Third, when the vibration generating disk 21 or the vibration generating protrusion 22 is provided at the tip of the vibration shaft 2, the vibration generating efficiency is further improved.

Claims (4)

Small motor (1), A vibration shaft 2 extending from the shaft of the motor and supported by the bearing 4, A vibrating case 3 surrounding the motor and the vibrating shaft, and Concrete pouring vibrator, characterized in that it comprises a handle bar (5) extending from the motor end of the vibration case and passes through the power supply line (11) of the motor. The concrete pour vibrator according to claim 1, further comprising a vibration generating disk (21) which is eccentrically inserted and rotated at the tip of the vibration shaft (2). The vibrator for concrete pouring according to claim 2, wherein the vibration generating disc (21) is inserted inclined with respect to the longitudinal direction of the vibration shaft (2). The concrete pour vibrator according to claim 1, further comprising a vibration generating protrusion (22) formed inclined at one side of the outer circumferential surface of the tip of the vibration shaft (2).