KR20090053406A - Concrete pouring vibrator - Google Patents

Abstract

The present invention relates to a concrete placing vibrator (vibrator) used to remove the bubbles contained in the mortar during the concrete pouring process in the construction of the building, the power supply of the alternating current (AC) irregular power supply is stable DC (DC) ) Switching Mode Power Supply (SMPS) that converts to power is installed at the end of the hose to maintain confidentiality, and the hose to supply power to BLDC motor is detachably connected to the power line connected to the vibrator and SMPS. .

To this end, the BLDC motor 42 and the vibrator 43 are rotatably embedded in the body 41 to generate the vibration while the vibrator 43 rotates as the BLDC motor 42 is driven by the application of power. In the vibrator provided with a vibrating rod 40, the connectors 46a and 46b are connected to the power lines 45 exposed at both ends, and the sockets 47a and 47b are fixed to the outside of the connector, respectively. And a connector 54 connected to the connector 46b exposed to one end of the hose 44, and at the same time a power supply line having a socket 55 on the outside of the connector 54. (53) is connected to the outer circumferential surface is provided with a heat sink 56 and the inside is sealed to maintain the airtight SMPS (52) for converting 220V AC power to DC 48V and BLDC motor (built in the vibration rod 40) The connector 46a connected to one end of the hose 44 by configuring the remote controller 65 for turning on and off the power of the 42 is connected to the BLDC motor 48. Is connected to the power supply line, and the connector (46b) connected to the other end of the hose 44 is electrically connected to the connector 54 connected to the power supply line 53 of the SMPS (52) hayeoseo.

Concrete pouring, defoaming, vibrator, hose connection, BLDC motor, SMPS

Description

Vibrator for concrete pouring {omitted}

The present invention relates to a vibrator (vibrator) used to remove the bubbles contained in the mortar during the concrete pouring process in the construction of the building, more specifically, the supply of a stable power supply of alternating current (AC) of irregular power supply ( Switching Mode Power Supply (SMPS), which converts DC) power, is installed at the end of the hose to maintain airtightness, and the concrete that supplies power to BLDC motor can be detachably connected to the power line connected to the vibrator and SMPS. It relates to a vibrator for.

In general, the process of constructing a building using concrete mortar at the construction site will be briefly described as follows.

First, in order to maintain sufficient strength according to the concrete mortar pouring, the various reinforcing rods are appropriately placed on the site of the concrete mortar, tied with thin wires, and then the formwork is wrapped around the formwork.

When the formwork is completed, cement, sand, and gravel in the proper ratio are mixed with water, and concrete mortar mixed evenly is carried by the ready-mixed concrete vehicle and concrete mortar is poured into the formwork.

As described above, after the concrete mortar is poured between the formwork and the formwork is removed for a certain period, the formwork is removed to complete the skeleton of the building.

However, before placing the concrete mortar carried by the ready-mixed concrete vehicle between the molds when the above-mentioned concrete mortar is poured, numerous bubbles are present in the concrete mortar. As it remains, the strength of the concrete is significantly reduced, which implies the risk of collapse.

Therefore, when pouring concrete mortar must be removed bubbles, the equipment used at this time is a vibrator (vibrator).

The vibrator serves to remove the air bubbles present in the mortar by applying a rapid vibration to the mortar when the concrete mortar is poured.

1 is a partial longitudinal sectional view showing an embodiment of a conventional vibrator, in which a housing constituting the vibrating rod 1 is divided into first, second, and third housings 5a, 5b, and 5c, and they are mutually screwed together. And a head cap 8 having a bearing 15a supporting one end of the eccentric shaft 14 is screwed into one end of the first housing 5a, and the BLDC motor 16 is driven inside the first housing. The eccentric shaft 14 which induces vibration while rotating in accordance with this is provided to be supported by the bearing 15b.

In addition, a BLDC motor 16 including a stator 16a and a rotor 16b is installed inside the second housing 5b screwed to the first housing 5a, so that the rotor 16b is supported by a bearing. The shaft 16c is fixed to the shaft 16c, and the shaft 16c is formed to be divided with the eccentric shaft 14 so as to be interconnected by connecting means.

In addition, a tab 21 is screwed to one side of the third housing 5c, and a hose 22 having a built-in cable 19 is connected to the tab 21, and the other end of the hose is 220V. A controller 23 for converting power to 48V and a switch 24 for controlling the operation of the BLDC motor 16 installed inside the second housing 5b are installed. The controller 23 has an outlet (not shown). The plug 25 inserted into the plug 25 is connected.

Therefore, when the plug 25 connected to the controller 23 for the concrete mortar pouring work is plugged into an outlet, power is applied to the controller 23.

In this state, one worker grips the controller 23, the other grips the vibrating rod 1, puts the vibrating rod 1 into the mortar, and then the other worker holding the controller 23 When power is applied by operating the switch 24, the power is supplied to the BLDC motor 16 through the cables 19 and 19a, so that the rotor 16b fixed to the shaft 16c rotates at high speed.

When the rotor 16b rotates at a high speed as described above, the power of the rotation of the rotor 16b is transmitted to the eccentric shaft 14 supported by the bearings 15a and 15b through the shaft 16c and the eccentric shaft. Since the 14 is rotated at a high speed, vibration is generated, and thus bubbles contained in the mortar are removed when the concrete mortar is poured.

However, this conventional vibrator has a number of problems as follows.

First, since 220V 220V commercial power is supplied to the controller and then 240V 48V is driven to drive the BLDC motor embedded in Jinbong-dong, there is a risk of electric shock in the construction site where there is a lot of moisture due to mortar casting. Of course, there is a limit to smoothly control and operate the BLDC motor according to the irregular power supply.

Second, the controller that controls the driving of the vibration rod is big and is connected to the end of the hose. Therefore, when placing concrete mortar, one person must work with the controller and the other person hold the vibration rod, so it is not possible to move quickly at the construction site. Not only was it impossible, but the labor cost of using the vibrator was doubled.

Third, the hose with the power cable is fixedly connected to one end of the vibrating rod, and the other end of the hose is fixedly connected to the controller. When the power cable built in the hose is disconnected, it is impossible to replace the hose quickly. The service center required a repair.

Fourth, the length of the hose (approximately 8m) is longer than necessary, so even if two people carry the hose between work, its weight is heavy and it is easy to feel fatigue, and noise is generated when the BLDC motor is driven. The motor will malfunction.

Fifth, since a lot of heat generated in the controller in the process of operating the switch installed in the controller, there was a lot of inconvenience for the operator to operate the switch.

The present invention has been made to solve such a conventional problem, by forming a hose with a built-in power cable to connect the power source by the connector so that the length of the hose to any length as needed, and at the same time socket the hose Its purpose is to be able to use it by connecting with the vibration rod and the power line connected with SMPS.

Another object of the present invention is to convert the 220V AC power to 48V DC power by applying a fully sealed SMPS to maintain the air tightness at the same time the large capacity heat sink is provided so that it can stably supply power to the BLDC motor built into the vibration rod It is.

Still another object of the present invention is to configure the circuit of the SMPS so that the controller can be operated by a separate remote controller so that one operator can operate the vibrator.

According to an aspect of the present invention for achieving the above object, a built-in BLDC motor and a vibrator rotatably inside the body is provided with a vibration rod for generating a vibration while the vibrator rotates as the BLDC motor is driven by the application of power In the vibrator, a connector is connected to each of the power lines exposed at both ends, and a hose is fixed to the outside of the connector, and a connector is connected to the connector exposed at one end of the hose. The power line is provided with a socket is connected to the heat sink on the outer circumferential surface and sealed inside to maintain the airtight SMPS for converting 220V AC power to DC 48V and the power of the BLDC motor built in the vibration rod, The connector connected to one end of the hose is composed of the remote controller to be turned off and connects to the power line of the BLDC motor, and the other end of the hose Connected connectors are provided for a concrete vibrator, it characterized in that the hayeoseo connected to the connector and electrically connected to the power supply line of the SMPS.

The present invention has the following advantages over the conventional vibrator.

First, by converting the AC voltage of 220V into 48V DC by SMPS, the controller of BLDC motor is driven. Therefore, the risk of electric shock is eliminated in advance in the humid construction site due to the mortar pouring. As a result, the control and operation of the BLDC motor is facilitated.

Second, the controller that controls the driving of the vibrating rod is compact, and the length of the hose can be adjusted to an arbitrary length as needed, so that one worker can operate the vibrator, so the labor cost according to the operation of the vibrator is halved. Can be reduced.

Third, the hose is detachably connected to the vibrating rod and the SMPS, so that the hose can be quickly replaced in the field even if the power line in the hose is disconnected.

Fourth, the length of the hose can be adjusted according to the conditions of the mortar construction site, so even if one person carries the hose between works, its weight is light, so it is not easy to feel fatigue and noise is not generated when the BLDC motor is driven. Do not.

Fifth, it is convenient for the operator to operate BLDC motor because remote control is possible by remote controller.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 2 to 4 as an embodiment.

Figure 2 is a longitudinal cross-sectional view showing a part of the configuration of the present invention and Figure 4 is a circuit diagram of the SMPS to be applied to the present invention, the present invention is filed by the applicant in advance registered on October 15, 2007 Patent No. 2007-12697 It is an improvement invention of arc.

In the present invention, the BLDC motor 42 and the vibrator 43 are rotatably embedded in the body 41 constituting the vibrating rod 40, and are coupled to one end of the vibrating rod 40 to form the BLDC motor 42. Connectors 46a and 46b are respectively connected to the power lines 45 exposed from both ends of the hose 44 for supplying power to the socket 44. The sockets 47a and 47b are respectively fixed to the outside of the connector. Connect the connector 46a fixed to one end of the power line 45 to the connector 49 fixed to the controller 48 of the BLDC motor 42, and then connect the socket 47a to the body of the vibrating rod 40. Screwed to (41).

The sockets 47a and 47b are fixed to both ends of the hose 44, and at the same time, the connecting members 50a and 50b to which the rubber hoses are fitted are fixed to the connecting members 50a and 50b. ) 47b are coupled to each other and then integrated with the separate fixing member 51.

And the other end of the hose 44 is connected to the SMPS 52 for converting the 220V AC power to 48V DC as shown in Figure 2, the power line 53 is connected to the SMPS (52) At the end of the power line, a socket 55 having a connector 54 is fixed.

Therefore, the connector 54 fixed to one end of the power line 53 is connected to the connector 46b connected to the other end of the hose 44 and the socket 55 connected to the power line 53 is connected to the hose 44. It is screwed into the socket 47b.

As shown in FIG. 4, the SMPS 52 is provided with a heat sink 56 on an outer circumferential surface thereof and sealed inside to maintain airtightness, and therein, an audible frequency of various noises input through a commercial power supply (AC) line. Electromagnetic Interference (EMI) filter 57 for removing high-frequency noise over the band; A first rectifying and smoothing circuit unit 58 for rectifying and smoothing the commercial power AC input after the noise is removed through the EMI filter to a predetermined DC voltage; A transformer (59) for converting the DC voltage output from the first rectifying and smoothing circuit unit into an AC voltage having a frequency corresponding to the switching timing of the switching control rectifier (SCR); A second rectifying and smoothing circuit unit 60 rectifying and smoothing the AC voltage output from the transformer to a predetermined DC voltage and supplying the load to the load; A feedback circuit unit 61 for detecting the magnitude of the DC voltage output from the second rectifying and smoothing circuit unit and transferring the detected magnitude to the voltage stabilization circuit unit; A voltage stabilization circuit part 62 for controlling a pulse width modulation (PWM) of the switching control rectifier element (SCR) in response to an output voltage of the second rectification and smoothing circuit part detected through the feedback circuit part; Switching operation having a frequency corresponding to the control signal output from the voltage stabilization circuit unit and converts the DC voltage output from the first rectification and smoothing circuit unit applied to the primary side of the transformer to an AC voltage to induce the secondary side of the transformer Note is composed of a silicon control rectifier (63); by plugging the plug 64 into an outlet (not shown), power is applied to the SMPS (52).

In addition, the controller 48 for controlling the BLDC motor 42 is remotely operated by a separate remote control 65, the controller 48 is airtight inside the body 41 of the vibration rod 40 as in the prior art. Although this may be provided so that it may be maintained, it is understood that it can also install in SMPS 52.

In an embodiment of the present invention, a hose 44 having a predetermined length (about 3 to 4 m) is used to connect the power line 53 of the SMPS 52 to one end of the hose, but in another embodiment As shown in FIG. 3, at least one auxiliary hose 66 having the same configuration as that of the hose 44 is connected between the hose 44 and the power supply line 53 as needed.

That is, the connectors 67a and 67b are provided at both ends of the auxiliary hose 66, and the sockets 68a and 68b are provided to the outside of the connector, respectively.

Referring to the operation of the present invention configured as described above is as follows.

First, the hose 44 or one or more auxiliary hoses 66 are connected between the vibration rod 40 and the power line 53 of the SMPS 52 according to the distance between the outlet and the mortar pouring point. Or connection of the auxiliary hose 66 is made by screwing the sockets together at the same time as connecting the connector.

In this state, the present invention can operate the SMPS 52 with the remote controller 65, so that one worker puts the vibrating rod 40 into the mortar and uses the remote controller 65 to control the controller 48 of the BLDC motor 42. When the power supply is supplied through the commercial power (AC) line, the EMI (Electro Magnetic Interference) filter 57 removes high-frequency noise above the audible frequency band among the various noises included in the corresponding AC voltage, thereby causing the noise. To prevent damage.

In addition, the first rectification and smoothing circuit unit 58 rectifies and smoothes the commercial power (AC) input after the noise is removed through the EMI filter to a predetermined DC voltage, and outputs it to the primary side of the transformer. The received transformer converts the DC voltage output from the first rectifying and smoothing circuit unit into an AC voltage having a frequency corresponding to the switching timing of the switching control rectifier SCR to transfer to the second rectifying and smoothing circuit unit 60. do.

Accordingly, the second rectification and smoothing circuit unit 60 rectifies and smoothes the AC voltage output from the transformer to a predetermined DC voltage (48V) and supplies the load to the load.

In this case, a part of the DC voltage output from the second rectifying and smoothing circuit unit 60 is transmitted to the feedback circuit unit, the magnitude of which is detected in real time, and then transferred to the voltage stabilization circuit 62, so that the voltage stabilization circuit 62 is performed. In response to the output voltage of the second rectifying and smoothing circuit unit detected in real time through the feedback circuit unit, the switching control rectifier (SCR) is controlled in real time in a pulse width (PWM: Pulse Width Modulation).

Therefore, since the silicon control rectifying element 63 performs a switching operation having a frequency corresponding to the variable control signal output in real time from the voltage stabilization circuit part, the transformer is output from the first rectifying and smoothing circuit part to be the primary. Since the DC voltage applied to the side is converted to an AC voltage to induce the secondary side, the BLDC motor 42 is driven more stably to rotate the vibrator 43 fixed to the shaft at high speed.

When the shaft rotates at a high speed as described above, the vibrator 43 fixed to the shaft also rotates at a high speed, so that vibration is generated by the eccentricity. Thus, bubbles contained in the mortar are removed during the concrete mortar pouring work.

As described above, although the BLDC motor 42 is driven by the controller 48 by the supply of power to heat the vibrator 43 at high speed, heat is generated in the SMPS 52 due to the voltage conversion. The heat dissipation plate 56 having a large capacity is provided on the outer circumferential surface of the 52 to quickly dissipate the external heat, thereby preventing the SMPS 52 from being burned out by high heat.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiments are for the purpose of description and not of limitation.

In addition, it will be understood by those skilled in the art that various changes can be made within the scope of the technical idea of the present invention.

1 is a partial longitudinal cross-sectional view showing an embodiment of a conventional vibrator

Figure 2 is a longitudinal cross-sectional view showing a part of the configuration of an embodiment of the present invention

Figure 3 is a longitudinal cross-sectional view showing another embodiment of the present invention

4 is a circuit diagram of an SMPS applied to the present invention.

Explanation of symbols for the main parts of the drawings

40: vibration rod 41: body

42: BLDC motor 43: vibrator

44 hose 48 controller

52: SMPS 53: power line

56 heat sink 57 EMI filter

58: first rectifying and smoothing circuit unit 59: transformer

60: second rectifying and smoothing circuit portion 61: feedback circuit portion

62: voltage stabilization circuit portion 63: silicon controlled rectifier

65: remote control 66: auxiliary hose

Claims (5)

A vibrating rod in which the BLDC motor 42 and the vibrator 43 are rotatably embedded in the body 41 to generate the vibration while the vibrator 43 rotates as the BLDC motor 42 is driven by the application of power. In the vibrator provided with (40), the connectors 46a and 46b are connected to the power lines 45 exposed at both ends, and at the same time, the hoses 47a and 47b are fixed to the outside of the connector. 44 and a power supply line 53 having a connector 54 connected to the connector 46b exposed to one end of the hose 44 and a socket 55 outside the connector 54. Is connected to the heat sink 56 is provided on the outer circumferential surface and the inside is sealed to maintain the airtight SMPS (52) for converting 220V AC power to DC 48V and of the BLDC motor 42 built in the vibration rod 40 The connector 46a connected to one end of the hose 44 by configuring a remote controller 65 for turning on and off power is connected to the power line of the BLDC motor 48. And the connector (46b) connected to the other end of the hose 44 is a vibrator for concrete, it characterized in that the hayeoseo electrically connected to a connector 54 connected to the power supply line 53 of the SMPS (52). The method according to claim 1, Auxiliary hoses 66 having connectors 67a, 67b and sockets 68a, 68b are further provided at both ends, so that the auxiliary hoses 66 are connected to the hoses 44 and the power lines 53 of the SMPS 52. Concrete pouring vibrator, characterized in that the connection between. The method according to claim 1, Vibrator for concrete pouring, characterized in that the interior of the vibration rod 40, the controller 48 for controlling the drive of the BLDC motor 42 is built. The method according to claim 1, Vibrator for concrete pouring, characterized in that the controller 48 for controlling the drive of the BLDC motor 42 is built in the SMPS (52). The method according to claim 1, The SMPS 52 includes: an EMI (Electro Magnetic Interference) filter 57 for removing high frequency noise over an audible frequency band among various noises input through a commercial power line; A first rectifying and smoothing circuit unit 58 for rectifying and smoothing the commercial power AC input after the noise is removed through the EMI filter to a predetermined DC voltage; A transformer (59) for converting the DC voltage output from the first rectifying and smoothing circuit unit into an AC voltage having a frequency corresponding to the switching timing of the switching control rectifier (SCR); A second rectifying and smoothing circuit unit 60 rectifying and smoothing the AC voltage output from the transformer to a predetermined DC voltage and supplying the load to the load; A feedback circuit unit 61 for detecting the magnitude of the DC voltage output from the second rectifying and smoothing circuit unit and transferring the detected magnitude to the voltage stabilization circuit unit; A voltage stabilization circuit part 62 for controlling a pulse width modulation (PWM) of the switching control rectifier element (SCR) in response to an output voltage of the second rectification and smoothing circuit part detected through the feedback circuit part; Switching operation having a frequency corresponding to the control signal output from the voltage stabilization circuit unit and converts the DC voltage output from the first rectification and smoothing circuit unit applied to the primary side of the transformer to an AC voltage to induce the secondary side of the transformer The silicon control rectifying element (63); concrete pouring vibrator, characterized in that consisting of.

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