KR101027705B1 - Motor control panel with automatic opening and closing function of motor control unit - Google Patents

Abstract

The present invention is provided with a motor control unit automatic opening and closing function that allows each motor control center unit (MCC) installed in a plurality of motor control center (MCC) to be located at the correct position and automatically draw in and out. Start a motor control panel. The disclosed motor control panel includes a motor control panel having a multi-stage motor control unit mounting portion in which a plurality of motor control units for individually controlling individual motors can be pulled in or pulled out, wherein the motor control panel is provided at the front of the motor control panel. Control means; and a drive unit installed in any one of the motor control unit or the motor control unit mounting portion to generate a driving force in accordance with a control command of the draw-out control means; and the motor control without the drive unit installed. A driven unit installed in one of the unit or the motor control unit mounting unit and receiving a driving force of the driving unit to draw the motor control unit from or to the motor control unit mounting unit; It characterized in that it comprises a means.

Description

Motor control panel with automatic opening and closing function of motor control unit {MOTOR CONTROL CENTER HAVING A FUNCTION OF AUTOMATICALLY OPENING AND CLOSING MOTOR CONTROL CENTER UNIT}

The present invention provides an automatic opening / closing function of a motor control unit for automatically placing or withdrawing each motor control unit located at a correct position in a plurality of motor control centers (MCCs). It relates to a motor control panel provided.

In general, a motor control center (MCC) independently controls each motor for driving a pump provided for various functions such as a fire water supply pump, a drainage pump, and a water supply supply pump installed in a large structure such as a building. It refers to a control panel equipped with a plurality of motor control center units (Motor Control Center Unit) having a motor control panel configured to enable.

1 to 3 is a view showing a conventional motor control panel (Motor Control Center) disclosed in the Republic of Korea Utility Model Registration No. 20-0284497.

The motor control panel 201 according to the related art shown in FIGS. 1 to 3 includes an MCCB (Molded Case Circuit Breaker), an MC (Magnetic Contactor), a CT (Current Transfer), a capacitor, a CT detection cell, and a communication device ( Each motor including a panel 205 provided with a KEN) and a sliding panel 203 coupled to an upper portion of the panel 205 and sliding to facilitate entry or withdrawal of the panel 205 into the housing 209. A housing 209 in which a plurality of motor control center units 204 and motor control units 204 are configured to be retractable from or retracted into the interior of the motor control panel 201. It is configured to include).

As shown in FIG. 2, a plurality of capacitors 301, fitting members 309, and a power supply bar 319 are installed inside the housing 209 so that the respective motor control units 204 are supplied with power. do.

As shown in FIG. 3, the sliding panel 203 has a handle 215 formed on a front surface thereof, and a sliding rail 504 having a fixed rail 501 and a floating rail 503 coupled thereto at both sides thereof, and having a housing 209. It is configured to facilitate the withdrawal or withdrawal of the motor control units 204 by sliding into or withdrawn from the interior of the housing 209.

However, in the case of the motor control panel 201 of the related art described above, an impact may occur when the sliding control for drawing or drawing is stopped by the motor control unit 204 being fixed at a predetermined position while sliding, thereby causing wiring or terminals. A phenomenon such as loosening of a connection part may occur, and problems such as a short circuit occurrence, excessive local heat generation, a malfunction or an electric shock may occur due to the loosening of a connection part such as a wire or a terminal.

In addition, when the motor control unit 204 is pulled out and excessive force is applied to increase the output power, the motor control unit 204 is suddenly drawn out and has a problem that a safety accident may occur by colliding with an adjacent worker. .

Therefore, the present invention is to solve the problems of the prior art described above, by preventing the occurrence of shock during the entry or withdrawal of the motor control unit to prevent the loosening of the wiring or terminals, such as the occurrence of short circuit, excessive local heat generation, It is an object of the present invention to provide a motor control panel having an automatic opening / closing function of a motor control unit that can prevent malfunction or electric shock and facilitate maintenance of the motor control panel.

The present invention also provides a motor control panel having an automatic opening and closing function of the motor control unit to prevent the occurrence of a safety accident by stopping the withdrawal action of the motor control unit when the motor control unit is adjacent within a predetermined distance that is a user. For other purposes.

Motor control panel having a motor control unit automatic opening and closing function of the present invention for achieving the above object, the motor control unit mounting portion is mounted so that a plurality of motor control units for the independent control of each motor is retractable or withdrawable A multi-stage motor control panel comprising: a pull-out control means installed on the front side of the motor control panel; and a driving force installed in any one of the motor control unit or the motor control unit mounting unit according to a control command of the pull-out control means. And a driving unit which is installed in any one of the motor control unit or the motor control unit mounting unit in which the driving unit is not installed, and receives the driving force of the driving unit to supply the motor control unit from the motor control unit mounting unit. A driven unit which draws out or draws into the motor control unit mounting unit. It characterized in that the drawing means comprises an inlet.

The pull-out means may further include a sensing sensor installed at the front of the motor control panel to sense a distance between the user and the motor control panel. The pull-out control means may further include distance information input from the sensing sensor. It may be configured to stop the driving of the drive unit when less than or equal to the predetermined distance value compared to the set distance value.

The draw-out means further includes a limit switch provided at one of the motor control unit and the motor control unit mounting unit at an end end position or an end end position of the motor control unit to terminate the entry or withdrawal of the motor control unit. Further, wherein the pull-out control panel may be configured to stop the driving of the drive unit when a switching signal is input from the limit switch.

The drive unit may include a drive gear having a screw thread formed along a circumference thereof, and a drive motor axially coupled to the drive gear.

The driven unit may include: a driven gear having a screw thread formed along a circumferential circumference in a rod shape; and a support unit rotatably supporting both end portions of the driven gear to fix the motor control unit or the motor control unit mounting part; It may be configured to include.

The pull-out means further includes a manual operation means for manually driving the driven gear of the driven unit, including a coupling part and a handle for rotatably fixing the coupling part where the coupling protrusion is formed. The end surface of the gear is formed with a coupling groove is inserted into the coupling projection is fixedly coupled, the front surface of the motor control panel may be configured to be formed in the manual operation means insertion hole in a position opposite to the coupling groove.

The present invention improves the safety of the operator during the entry and withdrawal of the motor control unit by allowing a screw bolt to be pulled in or taken out by rotating the screw bolt manually or automatically.

In addition, the present invention allows the motor control unit mounted on the motor control panel to be pulled in or pulled out by rotating the screw bolt manually or automatically, thereby preventing the occurrence of shock during the inlet or out of the motor control unit.

In addition, the present invention prevents loosening of wires or terminals when the motor control unit is pulled in or drawn out by preventing the occurrence of shock when the motor control unit is pulled in or pulled out, thereby causing a short circuit, excessive local heat generation, malfunction or electric shock. To prevent the occurrence of.

In addition, the present invention allows the motor control unit to be positioned at the correct position when the motor control unit is pulled in or out.

In addition, the present invention further facilitates the installation and maintenance work by allowing the motor control unit to be drawn in or taken out automatically when the power is supplied automatically when the power is cut off.

In addition, the present invention has an effect of preventing the occurrence of a safety accident in which the motor control unit collides with the user by stopping the withdrawal operation of the motor control unit when the distance to the user is within a certain distance when the motor control unit is drawn out. to provide.

1 and 2 show a motor control panel 201 of the prior art.
3 is a view showing a motor control unit 204 having a sliding housing function of the motor control panel 201 of FIGS. 1 and 2.
4 is a perspective view of the motor control panel 100 according to the first embodiment of the present invention.
5 is the present invention in which the drive unit (D) is mounted to the motor control unit mounting portion (11), and the driven unit (F) is mounted to the seating groove (24) formed on the bottom surface of the case (C) of the motor control unit (20). Partial perspective view of a motor control panel 100 according to the first embodiment of the.
6 is a bottom perspective view of the motor control unit 20 mounted to the motor control panel 100 according to the first embodiment of the present invention.
7 shows that the driven unit (F) is mounted to the motor control unit mounting portion 11, the drive unit (D) is mounted to the seating groove 24 formed on the bottom surface of the case (C) of the motor control unit 20 ' Partial perspective view of a motor control panel 100 ′ according to a second embodiment of the invention.
8 is a bottom perspective view of the motor control unit 20 'mounted on the motor control panel 100' according to the second embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

4 is a perspective view of the motor control panel 100 according to the first embodiment of the present invention, Figure 5 is a drive unit (D) is mounted to the motor control unit mounting portion 11, driven unit (F) is a motor control unit Partial perspective view of a motor control panel 100 according to the first embodiment of the present invention mounted on a seating groove 24 formed in the bottom surface of the case C of FIG. 20, and FIG. 6 is according to the first embodiment of the present invention. The bottom perspective view of the motor control unit 20 mounted in the motor control panel 100 is shown.

As shown in FIG. 4, the motor control panel 100 is automatically provided to each motor control unit mounting portion 11 by an enclosure 10 in which the motor control unit mounting portion 11 is formed in multiple stages and a drawing-out means 30 of the present invention. A plurality of motor control units 20 and a motor drawing unit 30 and a motor control unit 20 for automatically drawing in or drawing out the motor control units 20 which are mounted to be pulled in or out manually, It comprises a manual operation means (90) to be able to withdraw.

As shown in FIG. 5, each motor control unit mounting portion 11 of the enclosure 10 is partitioned by a diaphragm 10a. At a position adjacent to the front surface of the upper surface of the diaphragm 10a opposite to the screw bolt 31 of the driven unit F, which is one component of the drawing-out means 30 installed in the motor control unit 20. The drive unit D, which is another configuration of the pull-out means 30, is installed.

On both inner walls of the motor control unit mounting unit 11, guide rails 13 are provided to guide the slide movement of the motor control unit 20 when the motor control unit 20 is pulled in or pulled out.

Although not shown in FIG. 5, the diaphragm 10a partitioning the motor control unit mounting portion 11 is provided with limit switches S for stopping the withdrawal of the motor control unit 20 step by step. In the case of FIG. 5, three limit switches S are formed in a row at a position on the upper left side of the inner diaphragm 10a of the motor control unit mounting unit 11. The limit switch S located at the inlet side of the dual motor control unit mounting portion 11 stops the withdrawal of the motor control unit 20 when the motor control unit 20 is fully taken out. The limit switch S located in the next inner middle stops the withdrawal of the motor control unit 20 when the motor control unit 20 is withdrawn to the test position. This is for performing the inspection on the internal components of the motor control unit 20, and the coupling with the main bus is separated and the connection on the motor side is maintained. Next, the limit switch S positioned at the innermost side stops the induction of the motor control unit 20 in the fully drawn state in which the motor control unit 20 is coupled to the main bus. Three or more limit switches S may be installed according to different needs, and only one limit switch S may be installed. The positions at which the three limit switches S are mounted become the inlet or outlet end positions of the present invention.

Inside the enclosure 10, the contact preventing panel 313, the fitting member 309, the housing 209, the fitting member 309, power supply, as in the conventional motor control panel 201 shown in FIG. A bar 319, a capacitor 301, and the like are provided. In addition, a primary enclosure connection terminal (not shown) for applying external power, a secondary enclosure connection terminal (not shown) for supplying external power to each motor, and an external device are located at a position adjacent to the rear surface of the motor control unit 20. A tertiary enclosure connection terminal (not shown) that receives a control signal from a control center, a fire station, or the like is formed.

As shown in FIG. 6, the motor control unit 20 has an MCCB (Molded Case Circuit Breaker) and an MC (Magnetic Contactor) as shown in FIG. 1 to control the driving of the motor controlled by the motor control panel 100. ), A panel 205 (motor control panel) equipped with a CT (Current Transfer), a capacitor, a cell for CT detection, and a communication device (KEN) is installed and slides into or out of the motor control unit mounting unit 11. It is comprised including the case C withdrawn.

On the front of the case C, a power lamp 41, an inlet button 42, an outlet button 43 and a manual button 44 are formed to control the driving of the drive motor 51 of the drive unit D. A draw-out control panel 40 having a microcomputer or firmware including software for controlling the driving motor 51 according to the distance signal of the sensor 60 or the input of each of the buttons 42 to 44; A detection sensor 60 is attached to detect a distance from the user by means of a magnetic field, infrared rays, ultrasonic waves, light, etc., and is opposed to an end positioned at the front side of the screw bolt 31 of the driven unit F. The manual operation means insertion hole 21 is formed in the surface.

A limit protrusion P for switching the limit switches S is formed at a position at which the motor control unit 20 is stopped in the state where the motor control unit 20 is completely retracted among the bottoms of the case C. .

The drawout control panel 40 is connected to the detection sensor 60 and the driving motor 51 through a signal control line. As described above, the connected draw-out control panel 40 is connected to the draw-in, draw-out or manual operation signal inputted by the user pressing the draw button 42, the draw button 43, or the manual button 44. Accordingly, the driving of the driving motor 51 is controlled.

As described above, the connected pull-out control panel 40 also receives adjacent distance information from the sensor 60 to the user and forcibly stops the rotation of the driving motor 51 when the adjacent distance is smaller than the preset distance. By blocking the withdrawal of the motor control unit 20 to prevent the motor control unit 20 from colliding with the user to prevent the occurrence of a safety accident. Thereafter, when an input, withdrawal, or manual operation signal inputted by the user pressing the draw button 42, the draw button 43, or the manual button 44 is input, the driving of the driving motor 51 is controlled accordingly. .

Guide rails 13 formed on the motor control unit mounting portion 11 are inserted into the outer both side walls of the case C to form guide grooves 22 for sliding. Inside the guide groove 22, a plurality of ball bearings 23 are installed at regular intervals in order to facilitate the movement of the guide rail 13.

The bottom surface of the case (C) is formed with a seating groove 24 in which the driven unit (F) is installed along the longitudinal direction.

Although not shown in the drawing, the back of the case (C) has respective primary enclosure connection terminals (not shown), secondary enclosure connection terminals (not shown), and respective tertiary enclosure connection terminals (not shown). The primary connection terminal, the secondary connection terminal and the tertiary connection terminal are formed at the position.

The pull-out means 30 of the present invention includes the pull-out control panel 40, the drive unit (D), the driven unit (F) and the detection sensor (60).

Referring to FIG. 6, the take-out means 30 of the present invention including the driving unit D and the driven unit F among the configurations of the take-out means 30 will be described.

The drive unit (D) includes a worm gear 52 and a drive motor 51 in which the worm gear 52 is axially coupled to the screw bolt 31 to rotate. The worm gear 52 has a structure in which a screw thread is formed along the circumference of the cylindrical outer circumference, thereby becoming an embodiment of the driving gear of the present invention.

The driven unit F is configured to include a screw bolt 31 and a support unit 33 for rotatably supporting the screw bolt 31 at both ends of the screw bolt 31. An end surface of the screw bolt 31 opposite to the front surface of the motor control unit 20 is inserted with a coupling protrusion 92b of the manual operation means 90 so that the screw bolt 31 can be manually rotated. Groove 32 is formed. The support unit 33 includes a bearing member (not shown) coupled to the end of the screw bolt 31 so as to rotatably support the screw bolt 31 and rotatably coupled to the support unit 33. It is configured by. When the screw bolt 31 is supported by the support unit 33, the end of the screw bolt 31 having the coupling groove 32 may be coupled to the coupling protrusion 92b through the manual operation means insertion hole 21. So that it is combined so that it is exposed to the front. The screw bolt 31 is an embodiment of the driven gear of the present invention.

Next, the manual operation means 90 will be described.

As shown in FIG. 6, the manual operation means 90 includes a handle 91 and a coupling part 92 rotatably coupled to the end of the handle 91.

The coupling part 92 includes a coupling protrusion 92b protruding to be inserted into and fixed to the coupling groove 32 formed at the end surface of the screw bolt 31 in the coupling tube 92a and the coupling tube 92a. It is configured by.

The manual operation means (90) of the above configuration inserts the coupling portion (92) through the manual operation means insertion hole (21) when the automatic insertion or withdrawal of the motor control unit (20) is not possible due to a power failure or the like. After the coupling protrusion 92b is coupled to the motor control unit 20 by manually rotating or rotating the screw bolt 31 to be able to manually pull in or out.

Hereinafter, the coupling structure of the motor control panel 100 of the first embodiment of the present invention will be described with reference to FIGS. 5 and 6.

As shown in Fig. 5 and 6, the drive unit (D) of the pull-out means 30 is mounted on the upper surface of the diaphragm (10a), the driven unit (F) is on the bottom surface of the motor control unit 20 The mounting groove 24 is formed. At this time, the end surface on which the coupling groove 32 of the screw bolt 31 is formed is positioned to face the manual operation means insertion hole 21. In addition, the draw-out control panel 40 and the detection sensor 60 of the draw-out means 30 are attached to the front surface of the case C of the motor control unit 20. The drawout control panel 40 is connected to the driving motor 51 and the detection sensor 60 by a signal control line.

When the motor control unit 20 having the above configuration is inserted into the motor control unit mounting portion 11, guide grooves 13 provided in the motor control unit mounting portion 11 are formed on both side walls of the motor control unit 20, respectively. Is inserted into the (22) to induce the pull-out or pull-out movement of the motor control unit 20 and prevents the departure of the motor control unit 20.

At this time, as the screw bolt 31 of the driven unit (F) mounted on the bottom of the motor control unit 20 and the worm gear 52 of the drive unit (D) mounted on the upper surface of the diaphragm (10a) is screwed. Are engaged with each other.

When the user presses the pull-in button 42 or the pull-out button 43 in the combined state as described above, the driving motor 51 rotates in the direction in which the motor control unit 20 is pulled in or pulled out, and thus the motor control unit 20 is rotated. Draw in or withdraw. This drawing-in or drawing-out process is terminated when one of the limit switches S installed in the motor control unit mounting part 11 is pressed by the limit protrusion P installed on the bottom surface of the motor control unit 20. Then, when the retract button 42 or the retract button 43 is pressed again, the retracting or withdrawing operation is performed again until the next limit switch S is pressed.

Among these, when the motor control unit 20 draws out, the draw in and out control panel 40 drives the driving motor 51 when the distance information with the user detected by the sensor 60 has a value within a preset distance. Stopping prevents the motor control unit 20 from colliding with the user.

When the manual button 44 is pressed, the power applied to the driving motor 51 is cut off so that the user manually rotates the screw bolt 31 using the manual operation means 90 to manually rotate the motor control unit 20. The motor control unit mounting portion 11 can be pulled in or out of the motor control unit mounting portion 11.

7 and 8 show a motor control panel 100 ′ according to a second embodiment of the present invention, and FIG. 7 shows a driven unit F mounted to the motor control unit mounting portion 11 of the enclosure 10 ′. And a drive unit (D) is a partial perspective view of the motor control panel (100 ') according to the second embodiment of the present invention in which the mounting groove (24) formed in the bottom surface of the case (C) of the motor control unit (20') is mounted. 8 is a bottom perspective view of the motor control unit 20 'mounted to the motor control panel 100' according to the second embodiment of the present invention.

As shown in Fig. 7 and Fig. 8, the driven unit (F) of the pull-out means 30 of the present invention is installed in the motor control unit mounting portion 11, the drive unit (D) is the motor control unit (20 '). It is mounted on the seating groove 24 formed on the bottom of the.

In the above structure, since the power for driving the driving motor 51 is directly supplied from the motor control unit 20, the installation and withdrawal operation of the motor control unit 20 is facilitated.

In the exemplary embodiment of the present invention, the driving gear is a worm gear 52 and the driven gear is illustrated as a screw bolt 31. However, the driving gear and the driven gear may have various gear structures such as rack and pinion.

In addition, in the description of the embodiment of the present invention, the driving unit (D) and the driven unit (F) of the pull-out unit 30 is described as being driven by the gear coupling, the pull-out unit 30 is driven by hydraulic pressure Various modifications may be made to a hydraulic device having a driving rod and a hydraulic cylinder.

7 and 8 except for the installation position of the drive unit D and the driven unit F of the enclosure 10 'and the motor control unit 20', the enclosure 10 'of FIGS. And the motor control unit 20 '.

In addition, although the present invention is not shown in the drawings, the limit switches S of FIGS. 5 and 7 and the limit switch protrusions P of FIGS. 6 and 8 are different from the above-described configuration. 20 are sequentially provided on the bottom surface, and the limit protrusion may be formed at a position corresponding to the limit switch located on the front side of the motor control unit 20 among the upper portions of the diaphragm 10a of the motor control unit mounting portion 11. have. In this case, the limit switch located on the front side of the motor control unit 20 represents the fully retracted state, the intermediate limit switch represents the test position, and the limit switch located on the innermost side represents the complete retracted position.

100, 100 ': motor control center (MCC), 10, 10': enclosure
10a: diaphragm, 11: motor control unit mounting, 13: guide rail
20, 20 ': Motor Control Center Unit, C: Case
21: manual insertion means insertion hole, 22: guide groove, 23: ball bearing, 24: seating groove
30: drawing-out means, F: driven unit, 31: screw bolt, 32: coupling groove, 33: support unit
D: drive unit, 51: drive motor, 52: worm gear
40: draw-out control panel, 41: power lamp, 42: draw-out button, 43: draw-out button, 44: manual button
60: detection sensor
90: manual operation means, 91: handle, 92: coupling portion, 92a: coupling tube, 92b: coupling protrusion
P: limit protrusion, S: limit switch

Claims (6)

In a motor control panel having a multi-stage motor control unit mounting portion in which a plurality of motor control units are mounted to be retractable or withdrawn in order to independently control individual motors.
A draw-out control means installed in front of the motor control panel;
A driving unit installed in any one of the motor control unit or the motor control unit mounting portion to generate a driving force according to a control command of the drawout control means;
Installed in either the motor control unit or the motor control unit mounting portion in which the driving unit is not installed, the motor control unit is drawn out from the motor control unit mounting portion by being driven by the driving force of the driving unit, or to the motor control unit mounting portion. It is configured to include a withdrawal means having a driven unit;
The draw-out means for detecting the sensor is installed on the front of the motor control panel for detecting the distance between the user and the motor control panel; In order to phase out the motor control unit, the inlet end position, the outlet end position and the intermediate position of the motor control unit in either the motor control unit or the motor control unit mounting portion (the motor control unit may Are separated and the motor side connection is maintained), each with a limit switch (S),
The draw in and out control means stops the drawing drive of the driving unit when the distance information input from the sensing sensor is less than or equal to a preset distance value by comparing the distance information input from the sensing sensor, and a switching signal is input from the limit switches. Motor control panel, characterized in that configured to stop the drive of the drive unit. delete delete According to claim 1, wherein the drive unit,
A drive gear threaded along the circumference of the circumference;
And a drive motor axially coupled to the drive gear. The method of claim 1, wherein the driven unit,
A driven gear formed with a thread along the circumference of the rod;
And a support unit rotatably supporting both ends of the driven gear so as to be fixed to either the motor control unit or the motor control unit mounting part. The method of claim 5, wherein the draw-out means,
It further comprises a manual operation means for manually driving the driven gear of the driven unit, including a coupling for forming a coupling projection and a handle for rotatably fixing the coupling portion,
An end face of the driven gear is formed with a coupling groove into which a coupling protrusion is inserted and fixed.
Motor control panel, characterized in that the front surface of the motor control panel is formed with a manual operation means insertion hole in a position facing the coupling groove.

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