JPH0340979Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention applies vibration to poured mixed concrete to increase its fluidity, improve filling properties in formwork, and Eliminate air bubbles
This relates to an electric high-frequency concrete vibrator device that forms dense concrete, increases strength, and provides an excellent surface finish.In particular, we focused on the weight of the transformer to improve operability. This invention relates to a high frequency concrete vibrator device.

[Conventional technology] The conventional electric high frequency concrete vibrator device has a frequency of 50 to 60Hz and 200V as shown in Figure 4.
A power supply side outlet 1 connected to the low frequency power supply of
Inverter 2 converts a 50 to 60Hz, 200V low frequency power supply into a 200Hz, 200V high frequency power supply;
A transformer 3 that steps down the 200V high frequency power supply to a voltage of 50V in accordance with the vibrator drive motor;
Driven by an integrated inverter power supply unit 6 formed by connecting a breaker 4 that cuts off overload current and multiple load-side outlets 5 for connecting to multiple vibrator units, and a 200Hz, 50V motor. The vibrator unit 9 is constructed by integrally forming a vibrator 8 and a plug 7 connected to the load side outlet 5 of the inverter power supply unit 6.

[Problem to be solved by the invention] In the conventional concrete vibrator device, since the inverter power supply unit 6 includes a transformer 3 having a capacity for a plurality of vibrators, about half of the weight is consumed by the transformer 3. The disadvantage was that the overall weight was extremely large, making it difficult to move around the construction site and lacking in maneuverability.

The present invention was devised in order to eliminate the above-mentioned drawbacks of the prior art and improve the concrete vibrator device.The purpose is to reduce the weight of the inverter power supply unit and make it easier to use at construction sites. An object of the present invention is to provide a high-frequency concrete vibrator device that can be easily moved and improve work efficiency.

[Means for Solving the Problems] In view of the above-mentioned current situation, and in order to achieve the above object, the present invention provides an inverter that is connected to a low-frequency power supply side electrical outlet and converts a low frequency into a high frequency; An integrated inverter power supply unit comprising a plurality of load-side outlets for connecting the converted high-frequency power source to the load side, a plug for connecting to the load-side outlet, a motor-driven vibrator, and a voltage source for the high-frequency power source. The vibrator unit is integrated with a transformer that steps down the voltage to a predetermined voltage for the drive motor of the vibrator.The structure of the vibrator unit of this device will also be shown, and the high frequency concrete vibrator device will be described below. It is composed of

[Function] Therefore, although the high frequency concrete vibrator device according to the present invention is basically composed of an inverter power supply unit and a vibrator unit, since the inverter power supply unit does not have a built-in transformer, its weight is reduced by about 1. On the other hand, since the vibrator unit only requires the addition of a small transformer dedicated to the unit, the increase in weight is small and no problems arise.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG. 1 is a diagram showing a schematic configuration of a high frequency concrete vibrator device according to the present invention, which is composed of an inverter power supply unit 60 and a vibrator unit 90 as a whole.

In the inverter power supply unit 60, 50 to 60Hz,
1 power supply side outlet that connects to a 200V low frequency commercial power supply, and 200 50~60Hz, 200V low frequency power outlets.
Inverter 2 converts to Hz, 200V high frequency power supply
A breaker 4 that cuts off the circuit when an overcurrent occurs on the load side, and a plurality of parallel load-side outlets 5 for supplying the converted high-frequency power to the plurality of vibrator units 90 on the load side are connected in sequence. It constitutes the power supply circuit. That is, in the inverter power supply unit 60 of the present invention, the heavy transformer 3 in the conventional inverter power supply unit 6 is removed.

Next, the vibrator unit 90 connects to the plurality of load-side outlets 5 of the inverter power supply unit 60.
It is configured as a single unit so as to be connected to one of the load side outlets 5, a vibrator 8 driven by a 200Hz, 50V motor, and a 200Hz, 200V supplied by an inverter power supply unit 60. The high-frequency power source is integrated with a transformer 30 for stepping down the voltage to 200 Hz and 50 V for the drive motor of the vibrator 8. That is, the vibrator unit 9 of the present invention
0, unlike the conventional vibrator unit 9, each unit is equipped with a dedicated transformer 30 that is light in weight.
is added.

The transformer 30, as shown in FIG.
A total of six 65.8VA single-phase transformers 3a are used, two for each phase, and the primary side is connected in a star shape and the secondary side in a triangle (delta).The secondary power supply is 4A, 240Hz, It becomes 395VA.

The six transformers 3a are as shown in FIG.
It is molded in a steel cylinder 10 with silicone rubber 11, both ends of the cylinder 10 are sealed with rubber bushings 12, and a lead wire 13 is drawn out from the center to connect the plug 7 and the motor of the vibrator 8. ing. Also, the transformer 3a
These can also be integrated by incorporating them into the vibration-free plug 7. Recently, a high magnetic material with an amorphous iron core head has been used for the transformer 30, and the size and weight of the transformer 30 has been reduced.

[Effects of the invention] As described above, the present invention includes an inverter that is connected to a low-frequency power supply side outlet and converts the low frequency into a high frequency, and a plurality of load-side outlets that connect the converted high-frequency power to the load side. An integrated inverter power supply unit comprising: a plug connected to the load side outlet; a motor-driven vibrator; and a transformer that steps down the high-frequency power supply to a predetermined voltage for the vibrator's drive motor. Since this is a high-frequency concrete vibrator device consisting of a vibrator unit, whereas conventionally the inverter power supply unit had a built-in transformer heavy enough to drive multiple vibrator units, the inverter power supply unit By eliminating the transformer and replacing it with a dedicated small transformer, which is separate and built into the vibrator unit, the weight of the inverter power supply unit can be reduced by approximately 1/2. Therefore, the concrete vibrator device at a construction site has high mobility, can improve work efficiency, and has a practically beneficial effect of reducing construction costs.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a schematic configuration diagram of the device of the present invention, FIG. 2 is a wiring diagram of a transformer, FIG. 3 is a substantial sectional view of the transformer, and FIG. FIG. 4 is a schematic diagram of a conventional high-frequency concrete vibrator device. 1...Power side outlet, 2...Inverter,
3,30...transformer, 4...breaker, 5...
Load side outlet, 6, 60... Inverter power supply unit, 7... Plug, 8... Vibrator,
9, 90... vibrator unit, 10... cylinder, 11... silicone rubber, 12... rubber butting, 13... lead wire.

Claims (1)

[Claims for Utility Model Registration] (1) An inverter that is connected to a low-frequency power source side outlet and converts the low frequency to high frequency, and a plurality of load side outlets that connect the converted high-frequency power source to the load side. An integrated vibrator comprising an integrated inverter power supply unit, a plug connected to the load-side outlet, a motor-driven vibrator, and a transformer that steps down the high-frequency power source to a predetermined voltage for the vibrator's drive motor. A high frequency concrete vibrator device consisting of a unit. (2) The high-frequency concrete vibrator device according to claim 1, wherein the plug and transformer of the vibrator unit are integrally constructed.