KR101708020B1 - Motor Control Center Equipped with Easy Operating Interlock Device - Google Patents

Abstract

The electric motor control board of the present invention includes a plurality of drawing units installed inside the enclosure, supplying power to the electric motor and receiving the electric power from the busbar, A primary connector powered by the busbar; A secondary connector for coupling electric power supplied from the primary connector to an electric motor load; A breaker main body for turning on / off the breaker main body, and a switch for connecting the breaker switch to the breaker main body and for supplying the power to the secondary connector A breaker having a switch shaft of a bar shape; A front plate, a left and right face plates, a rear plate and a bottom plate on which the above-mentioned first connector, the second connector and the breaker are fixedly installed, and on which the breaker switch release button and the meter and the lamp display device are installed, A sliding box; A unit holder which is pulled out of the sliding compartment by a guide rail installed on the floor and is fixed to an enclosure of the electric motor control panel; An in-shaft screw installed inside the sliding compartment to allow the sliding compartment to be drawn in and out according to the rotation of the screw; An operation handle coupled to the in-take shaft screw to rotate the in-take shaft screw; And an interlock device for preventing the sliding door from being pulled out or drawn in when the drawer unit is under a load, wherein the interlock device comprises a circular hole formed in the right portion when the breaker switch is off, The handle is inserted into the handle insertion hole to enable rotation of the in-shaft screw. When the breaker switch is turned on, the circular hole moves to the left to close the handle insertion hole.
According to the motor control panel equipped with the interlock device easy to operate according to the present invention, the link interlock device provided on the circuit breaker without any locking device operation at the time of withdrawing the input / output unit can be opened or closed by opening / So that the risk of erroneous operation due to cumbersome operation can be eliminated, so that convenience of operation and safety can be increased, and the apparatus cost is reduced.

Description

[0001] The present invention relates to a motor control unit having an interlock device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor control panel in which a plurality of drawer units having an interlock device are installed. More specifically, the present invention relates to a motor control panel in which a lock- The present invention relates to an electric motor control panel in which a plurality of drawing units having an interlock device that facilitates operation and safety are provided by eliminating the risk of erroneous operation due to troublesome operation.

General low-voltage motor control panel is a centralized control system that is used for general industrial facilities such as power plant, petrochemical plant, cement plant, water treatment plant, steel plant, special industrial facility or offshore plant or ship and is powered by various industrial facilities For example, for starting, stopping, and protecting the electric motor.

The motor control panel has a step-by-step connection of a drawing unit including a primary power plug, a secondary power plug, a tertiary control plug, a panel and a breaker switch to a fixed distribution section including a distribution busbar, a distribution device and a tertiary control plug .

The drawing unit is drawn out by the user and constitutes a connecting position, a test position and a disconnection position according to the drawing-out position.

Here, when the drawing unit of the motor control panel is pulled out with a strong force, it can not be stopped at the test position and can be pulled out to the disconnection position or can be separated from the low-voltage motor control panel.

In particular, the drawing unit is provided with rails inside the unit holder, so that the wheels on both sides of the drawing unit can be mounted on the rails and the shaft screws can be pulled out or drawn into the operation handle. The accident is frequently occurred and the interlock device is installed.

However, the operation of the interlock device of the drawing unit configured for safety purposes is not so simple, and there is a fear of erroneous operation of the facility operator.

It is necessary to improve the interlock with a simple structure which does not cause erroneous operation because it causes troubles such as stopping the operation of the equipment for a long time during the repair due to the breakage of the mechanism during the erroneous operation.

1. Korean Patent Registration No. 10-1087511 (Registration date: November 22, 2011) 2. Registration Utility Model Bulletin No. 20-0376465 (Registered Date: February 11, 2005) The interlock device of the breaker 3. KOKAI Publication No. 10-2016-0064806 (Publication date: June 08, 2016) Inlet / outlet interlock device of vacuum breaker 4. Korean Patent Registration No. 10-0420624 (Date of Registration: Feb. 17, 2004) Drawer-type electric device drawing device 5. Korean Registered Patent Publication No. 10-1627678 (Registration date: May 31, 2016) 3-step drawing input / output unit of the low-voltage motor control panel unit

In order to solve the above-described problems, the present invention provides a motor control panel having a plurality of draw-out units which are drawn out by an in-shaft screw, the motor control board comprising two links provided inside the front plate and connected by connection pins, And when the breaker switch is turned off, the circular hole formed in the right portion coincides with the handle insertion hole, so that the handle is inserted and the shaft screw is rotated And a motor control panel having a plurality of drawing units including an interlock device which moves the circular hole to the left and blocks the handle insertion hole when the breaker switch is on, .

An electric motor control panel according to the present invention comprises: A bus bar connected to an output terminal of the parked vehicle and supplied with electric power and installed inside the enclosure; And a plurality of drawing units installed in the inside of the enclosure to receive power from the bus bars to supply power to the corresponding electric motors, and to perform maintenance work and draw-in and draw-in if necessary.

The drawing unit includes a primary connector for receiving power from a bus bar; A secondary connector for coupling electric power supplied from the primary connector to an electric motor load; A breaker main body for turning on / off the breaker main body, and a switch for connecting the breaker switch to the breaker main body and for supplying the power to the secondary connector A breaker having a switch shaft of a bar shape; A front panel, a left and right face panel, a rear panel, and a bottom panel on which the first connector, the second connector, and the breaker are fixedly installed, and on which the breaker switch withdraw button and the meter and the lamp are mounted, A sliding box for shutting off the door; A unit holder having a holder bottom plate provided with a guide rail at an upper portion thereof and a holder rear plate, the sliding box being installed at an upper portion thereof, drawn out through the guide rail, and fixed to an enclosure of the motor control panel; An in-shaft screw installed inside the sliding compartment to allow the sliding compartment to be drawn in and out according to the rotation of the screw; An operation handle coupled to the in-take shaft screw to rotate the in-take shaft screw; And an interlock device for preventing the drawer unit from being pulled out or drawn in while the drawer unit is under load.

The front plate is formed with a handle insertion hole into which the operation handle is inserted to rotate the shaft screw.

The interlock device includes two links provided on the inner side of the front plate and connected to the connection pin. One end of the interlock device is connected to the switch shaft, and moves in the left and right direction when the breaker switch is turned on / off.

In the interlock device, when the breaker switch is turned off, a circular hole formed in the right portion coincides with the handle insertion hole to allow the handle to be inserted to rotate the in-shaft screw, The circular hole moves to the left to close the handle insertion hole.

The interlock device may include a circular hole having the same size as that of the handle insertion hole. When the breaker switch is on, the handle insertion hole formed in the front plate is closed and the handle is inserted. An on-off slide link which is moved to the right when the breaker switch is turned off, and the handle insertion holes and the circular holes are arranged in parallel so as to have the same center; A shaft-connected slide link having one end hinged to the on-off slide link, the other end being fitted to the switch shaft and rotating together when the switch shaft is rotated by operation of the breaker switch; The connecting pin hinging the on-off slide link and the shaft connecting slide link; And a link bracket fixedly coupled to the bottom plate of the sliding compartment and having a support pin formed at a predetermined height so as to support the on-off slide link so as to move left and right.

The on-off slide link is manufactured by bending the flat bar 90 degrees from a predetermined length, and then bending the flat bar 90 degrees again to eliminate the gap with the front plate.

Wherein the on-off slide link comprises: a flat link unit vertically installed at a predetermined distance from the front plate so that the support pin is not interfered with the front plate, and having a predetermined width, a predetermined length, and a predetermined thickness; And a bent bar link portion formed perpendicularly to the flat link portion and having a flat bar bent at 90 degrees in order to eliminate a gap between the flat bar link portion and the front plate.

Off slide link slit hole having a predetermined width and a predetermined length so that the support pin of the link bracket fixed when the on-off slide link moves left and right does not interfere with a predetermined portion of the flat link portion, A connection pin insertion hole into which the connection pin is inserted is formed at one end of the slide link side of the flat link portion.

Wherein the switch shaft is inserted into one end of the shaft-connected slide link for coupling with the switch shaft, and a quadrangular-shaped quadrangular hole is formed so that the switch shaft can be rotated without rotating when the switch shaft is rotated, And the other end of the link is connected to the other end of the link so that the connection pin can be moved up and down so that the on-off slide link can move horizontally while moving the link, A link slit hole is formed.

The link bracket includes: a bottom-surface-fitting portion fixedly coupled to the bottom plate; And a link support portion formed vertically at one end of the bottom wall edge portion and having the support pin fixedly coupled thereto.

The problems to be solved by the present invention can be solved by the above-mentioned motor control panel.

According to the motor control panel equipped with the interlock device easy to operate according to the present invention, the link interlock device provided on the circuit breaker without any locking device operation at the time of withdrawing the input / output unit can be opened or closed by opening / So that the risk of erroneous operation due to cumbersome operation can be eliminated, so that convenience of operation and safety can be increased, and the apparatus cost is reduced.

1 is an overall front view of an electric motor control board equipped with an interlock device easy to operate according to the present invention.
Fig. 2 is an overall internal side view of an electric motor control panel equipped with an easy-to-operate interlock device of the present invention
Fig. 3 is a perspective view of a drawing unit according to an electric motor control panel equipped with an interlock device,
Fig. 4 is a perspective view of a drawer unit having an interlock device according to an embodiment of the present invention,
Fig. 5 is a perspective view showing an interlock device according to an electric motor control board equipped with an interlock device easy to operate according to the present invention, connected to a switch shaft and capable of operating an in-
6 is a perspective view of an interlock device of a take-out unit according to an electric motor control panel equipped with an interlock device easy to operate according to the present invention.
7 is a schematic view of an interlock device of a take-out unit according to an electric motor control panel equipped with an easy interlock device of the present invention
8 is a front view of the interlock device according to the interlock device according to the drawing unit of the motor control panel with the easy interlock device of the present invention when the circuit breaker is off and on
9 is a perspective view showing an on-off slide link perspective view of the interlock device according to the drawing unit of the motor control panel equipped with the interlock device,
10 is a schematic diagram of an on-off slide link of an interlock device according to the drawing unit of the motor control panel equipped with the interlock device easy to operate according to the present invention
Fig. 11 is a perspective view showing a shaft-connected slide link perspective view of the interlock device according to the drawing unit of the motor control panel equipped with the interlock device,
Fig. 12 is a schematic view of an axial linkage slide link of an interlock device according to the drawing unit of an electric motor control board equipped with an easy interlock device of the present invention
13 is a perspective view of the link bracket of the interlock device according to the drawing unit of the motor control panel equipped with the interlock device easy to operate according to the present invention
14 is a schematic view of a link bracket of an interlock device according to the drawing unit of an electric motor control board equipped with an easy interlock device of the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Further, the following terms are defined in consideration of the functions of the present invention, and this may vary depending on the intention of the user, the operator, or the like, and the definition thereof is "a motor control board equipped with an interlock device, The present invention is not limited thereto.

Hereinafter, a preferred embodiment of a "motor control board with an interlock device easy to operate" according to the present invention will be described in detail.

The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

Fig. 2 is an overall internal side view of a motor control panel equipped with an easy-to-operate interlock device of the present invention, Fig. 3 is a side view showing the operation of the motor control panel of the present invention, FIG. 4 is a perspective view of a drawer unit having an interlock device according to an embodiment of the present invention; FIG. 4 is a perspective view of a drawer unit having an interlock device according to an embodiment of the present invention, Fig. 6 is an exploded perspective view of the motor control panel with the interlock device of the present invention. Fig. 6 is a perspective view of the motor control panel with the interlock device of the present invention, Fig. 7 is a perspective view of the interlock device of the drawing unit according to the present invention. Fig. 8 is a front view of the interlock device when the circuit breaker is turned off and on according to the interlock device according to the drawing unit of the motor control board equipped with the interlock device easy to operate according to the present invention. And Fig. 9 is an on-off slide link perspective view of the interlock device according to the drawing unit of the motor control panel equipped with the easy interlock device of the present invention. Fig. Fig. 11 is a perspective view showing the slide connection of the interlock device according to the drawing unit of the motor control panel with the easy interlock device of the present invention, Fig. In accordance with the drawing unit of the motor control panel with easy interlock device, 13 is a perspective view of a link bracket of an interlock device according to a drawing unit of a motor control panel equipped with an interlock device easy to operate according to the present invention, and Fig. 14 is a perspective view of a link bracket of an interlock device according to the present invention, Fig. 3 is a schematic view of a link bracket of an interlock device according to the drawing unit of the motor control panel.

As shown in FIGS. 1 and 2, an electric motor control panel A includes an enclosure A1 having a frame A11 installed inside and having an outer shape and protecting the interior thereof; A bus bar A2 connected to an output terminal of the parked vehicle and supplied with electric power and installed inside the enclosure A1; And a plurality of drawing units A3 installed in the inside of the enclosure A1 to receive power from the bus bars A2 to supply power to the corresponding electric motors, The drawing unit A3 is provided with a primary connector 1 for receiving power from the bus bar A2 and a secondary connector 2 for coupling the power supplied from the primary connector 1 to the motor load , A sliding box (4), and an in-shaft screw (6) for pulling out the sliding box (4).

As shown in FIG. 3, the drawing unit A3 includes a primary connector 1 receiving power from the bus bar A2; A secondary connector (2) for coupling electric power supplied from the primary connector (1) to an electric motor load; A breaker main body 31 for supplying electric power to the secondary connector 2 in the primary connector 1 or for cutting off power when necessary or overloaded and a breaker switch for turning on and off the breaker main body 31 32), a circuit breaker (3) having a switch shaft (33) connecting the breaker switch (32) to the breaker main body (31) and having a square bar shape; The front panel 41 is provided with the primary connector 1, the secondary connector 2 and the circuit breaker 3 therein. The circuit breaker switch 32, the pull-out button, the meter, A sliding box 4 having left and right face plates, a rear plate and a bottom plate 42 for interrupting electric power when necessary or overloaded; A holder bottom plate 51 provided with a guide rail 511 at an upper portion thereof and a holder rear plate 52 provided with an insulation shutter 521 as shown in Figure 4-2, A unit holder 5 pulled out by the guide rail 511 and fixed to an outer case A1 of the motor control panel A; An in-shaft screw (6) installed inside the sliding box (4) to allow the sliding box (4) to be drawn out according to the rotation of the screw; An operation handle 8 inserted into the in-shaft screw 6 to rotate the in-shaft screw 6; And an interlock device (7) for preventing the sliding compartment (4) from being drawn out or drawn in while the drawing unit (A3) is loaded.

As shown in FIG. 4, the front plate 41 is formed with a handle insertion hole 411 through which the manipulation handle 8 is inserted so that the in-shaft screw 6 can be turned.

The third connector shown in Figs. 3 and 4 is a connector for supplying control power.

The withdrawing button is a final safeguard device, and even if the interlock device 7 is released, only the withdrawing button is depressed to finally withdraw the withdrawing unit A3.

The drawing unit A3 draws or inserts the sliding box 4 by rotating the inboard shaft screw 6 with the operation handle 8. The interlock device 7 is configured such that the drawing unit A3 is in a state in which the load And prevents the sliding compartment 4 from being pulled out or pulled in the hooked state.

The interlock device 7 includes two links provided inside the front plate 41 and connected by a connection pin 73. One end of the interlock device 7 is connected to the switch shaft 33 so that the breaker switch 32 (On / Off) operation of left and right.

When the breaker switch 32 is turned off, the circular hole 7121 formed in the right portion of the interlock device 7 is aligned with the handle insertion hole 411 to insert the operation handle 8 The circular hole 7121 moves to the left side and blocks the handle insertion hole 411 when the breaker switch 32 is turned on.

3, the circuit breaker 3 is turned on so that the circular hole 7121 of the interlock device 7 is moved to the left so that the other part of the on-off slide link 71 is engaged with the in- And the front plate 41 is not shown in the drawing, but the handle insertion hole 411 is closed.

Fig. 4 is a perspective view of the drawer unit A3 in which the interlock device 7 is installed. Fig. 4 (b) is a perspective view of the breaker 3 as shown in Fig. 4A shows that the circular hole 7121 of the interlock device 7 is moved to the left side and the other part of the on-off slide link 71 blocks the handle insertion hole 411 as shown in FIG. The circuit breaker 3 is turned off and the circular hole 7121 of the on-off slide link 71 coincides with the handle insertion hole 411 as shown in a red portion, 8) are inserted to allow the rotation of the in-shaft screw 6.

4-2, the unit holder 5 has a holder bottom plate 51 on which a guide rail 511 is installed and a holder rear plate 52 on which an insulating shutter 521 is installed. And is fixed to the housing A1 of the motor control panel A.

At the upper part of the unit holder 5, the sliding compartment 4 is installed at the upper part and drawn out through the guide rail 511.

As shown in FIGS. 5 to 7, the interlock device 7 is provided to prevent the sliding box 4 from being pulled out or drawn in while the drawing unit A3 is under load, The circular hole 7121 having the same size as that of the handle insertion hole 411 is formed and the handle insertion hole 411 formed in the front plate 41 is inserted into the state where the breaker switch 32 is turned on The manipulation handle 8 is not inserted and when the breaker switch 32 is turned off, the handlebar insertion hole 411 and the circular hole 7121 move in the right direction, An on-off slide link 71 disposed; And the other end is hinged to the switch shaft 33 so that when the switch shaft 33 is rotated by the operation of the breaker switch 32, A slide link (72); The connection pin (73) hinging the on-off slide link (71) and the shaft connecting slide link (72); A link bracket 74 fixed to the bottom plate 42 of the sliding box 4 and formed with a support pin 7421 at a predetermined height to support the on-off slide link 71 for lateral movement, .

The interlock device 7 is a key element of the present invention, and it can be connected to the shaft connecting slide link 72 and the connecting pin 73, which are connected to the switch shaft 33 of the circuit breaker 3, The mechanical interlock necessary for safety can be taken or released only by the ON / OFF operation of the opening and closing of the circuit breaker (3) by the off-slide link (71), thereby eliminating the risk of erroneous operation due to troublesome operation, And the manufacture and installation cost of the interlock device is low.

8 is a diagram showing states of the respective components of the interlock device 7 when the circuit breaker 3 is turned off and when the circuit breaker 3 is turned on.

8-1 shows a state in which the handle insertion hole 411 is not shown when the breaker 3 is turned off but the circular hole 7121 of the on-off slide link 71 is inserted into the handle insertion hole 411 And one end of the in-out shaft screw 6 is inserted into the handle insertion hole 411 so that one end of the in-out shaft screw 6 is inserted into the end of the operation handle 8 So that the operation handle 8 can be turned and the drawing unit A3 can be taken out.

8-2 shows a state in which the handle insertion hole 411 is not shown when the breaker 3 is turned on but the circular hole 7121 of the on-off slide link 71 is inserted into the handle insertion hole 411 , The operating handle 8 can not be inserted, and at this time, the drawing unit A3 can not be taken out.

9 and 10, the on-off slide link 71 moves left and right, and the circular hole 7121 having the same size as that of the handle insertion hole 411 is formed, and the front plate 41, When the breaker switch 32 is turned on, the handle insertion hole 411 is blocked from behind to prevent the handle from being inserted. When the breaker switch 32 is turned off, The handle insertion hole 411 and the circular hole 7121 are arranged in series in parallel with the same center.

The on-off slide link 71 is manufactured by bending the flat bar 90 degrees from a predetermined length and then bending the flat bar 90 degrees again to eliminate the gap with the front plate 41.

The on-off slide link 71 is vertically installed at a predetermined distance from the front plate 41 so that the support pin 7421 is not interfered with the front plate 41, A flat link portion 711 having a flat link portion 711; A bending bar link portion 712 having a flat bar bent at 90 degrees and formed with the circular hole 7121 is formed in a shape that is perpendicular to the flat link portion 711 and is spaced apart from the front plate 41, .

The support pin 7421 of the link bracket 74 fixed when the on-off slide link 71 moves in the left-right direction does not interfere with a certain portion of the flat link unit 711, A long on-off slide link slit hole 7111 is formed.

A connecting pin insertion hole 7112 through which the connecting pin 73 is inserted is formed at one end of the flat link portion 711 on the shaft connecting slide link 72 side.

11 and 12, the shaft-connected slide link 72 is hinged to the on-off slide link 71 at one end, and the other end is fitted to the switch shaft 33, And has one end on the left side in the shape of a circle having a certain radius of curvature in order to avoid interference with the switch shaft 33. The other end of the semi- The slide link 71 has a curved surface that is inclined at a predetermined angle in order to avoid interference when the slide link 71 is moved.

The switch shaft 33 is inserted into one end of the shaft connecting slide link 72 for coupling with the switch shaft 33 and is rotated 4 Square-shaped holes 721 are formed.

The other end of the shaft connecting slide link 72 is operated to operate the breaker switch 32 so that the on-off slide link 71 can move horizontally and laterally when the shaft connecting slide link 72 rotates A long and long shaft-connected slide link slit hole 722 is formed so that the connection pin 73 can move up and down.

As shown in FIGS. 13 and 14, the link bracket 74 is fixedly coupled to the bottom plate 42 of the sliding box 4, and a support pin 7421 is formed at a predetermined height, And supports the link 71 so as to be able to move in the left and right direction.

The link bracket (74) includes a bottom plate fitting portion (741) fixedly coupled to the bottom plate (42); And a link support portion 742 vertically formed at one end of the bottom wall edge portion 741 and having the support pin 7421 fixedly coupled thereto.

A bottom plate coupling hole 7411 is formed in the bottom plate coupling portion 741 to be fixed to the bottom plate 42 by bolts.

The link support portion 742 is formed with a support pin engagement hole 7422 for inserting and fixing the support pin 7421 therein.

The support pin 7421 should be formed with a circular pin head that is wider than the width of the on-off slide link slit hole 7111 so that the support pin 7421 does not come off from the on-off slide link slit hole 7111, ) Should have a certain length so that they can move left and right without tightness and tightness.

According to the motor control panel equipped with the interlock device easy to operate according to the present invention, the interlock device 7 is provided in the drawing unit A3 and is coupled to the switch shaft 33 of the circuit breaker 3 without operating any other locking device The mechanical interlock necessary for safety is engaged or released only by the ON / OFF operation of opening and closing the breaker 3 with the on-off slide link 71 connected to the shaft connecting slide link 72 and the connecting pin 73 Thereby avoiding the risk of erroneous operation due to troublesome operation, thereby improving the convenience of operation and safety, and it is required to reduce manufacturing and installation costs.

A: Motor control board
A1: Enclosure A11: Frame
A2: Booth bar
A3: Drawer unit 1: Primary connector
2: Secondary connector 3: Circuit breaker
31: Circuit breaker body 32: Circuit breaker switch
33: Switch shaft 4: Sliding
41: front plate 411: handle insertion hole
42: bottom plate 5: unit holder
51: holder bottom plate 511: guide rail
52: holder back plate 521: insulating shutter
6: In-out shaft screw
7: Interlock device
71: on-off slide link 711: flat link part
7111: On-off slide link slit hole 7112: Connection pin insertion hole
712: Bending bar link portion 7121: Round hole
72: Axial connection slide link 721: 4-hole
722: shaft connection slide link slit hole 73: connection pin
74: Link bracket 741:
7411: bottom plate coupling hole 742:
7421: Support pin 7422: Support pin engagement hole
8: Operation handle

Claims (3)

An outer case A1 for protecting the inside and forming an outer shape;
A bus bar A2 connected to an output terminal of the parked vehicle and supplied with electric power and installed inside the enclosure A1;
And a plurality of drawing units A3 installed in the inside of the enclosure A1 to receive power from the bus bars A2 to supply power to the corresponding electric motors, In the motor control panel (A)
The drawing unit A3 includes a primary connector 1 receiving power from the bus bar A2;
A secondary connector (2) for coupling electric power supplied from the primary connector (1) to an electric motor load;
A breaker main body 31 for supplying electric power to the secondary connector 2 in the primary connector 1 or for cutting off power when necessary or overloaded and a breaker switch for turning on and off the breaker main body 31 32), a circuit breaker (3) having a switch shaft (33) connecting the breaker switch (32) to the breaker main body (31) and having a square bar shape;
The front panel 41 is provided with the primary connector 1, the secondary connector 2 and the circuit breaker 3 and is equipped with the breaker switch 32, the eject button, A sliding box (4) having left and right face plates, a rear plate and a bottom plate (42) and for interrupting electric power when necessary or overloaded;
The sliding rail 4 is installed at the upper part and drawn out from the guide rail 511 by the holder bottom plate 51 and the holder rear plate 52 provided with the guide rail 511 at the upper part, A unit holder 5 fixed to the enclosure A1 of the control panel A;
An in-shaft screw (6) installed inside the sliding box (4) to allow the sliding box (4) to be drawn out according to the rotation of the screw;
An operation handle 8 inserted into the in-shaft screw 6 to rotate the in-shaft screw 6;
And an interlock device (7) for preventing the sliding compartment (4) from being pulled out or drawn in while the drawing unit (A3) is loaded,
The front plate 41 is formed with a handle insertion hole 411 through which the operation handle 8 is inserted so as to turn the in-shaft screw 6,
The interlock device 7 includes two links provided inside the front plate 41 and connected by a connection pin 73. One end of the interlock device 7 is connected to the switch shaft 33 so that the breaker switch 32 (On / off) operation of the vehicle,
The circular hole 7121 formed in the right portion coincides with the handle insertion hole 411 so that the operation handle 8 is inserted and the in-shaft screw 6 is inserted, When the breaker switch 32 is turned on, the circular hole 7121 moves to the left to close the handle insertion hole 411,
The interlock device 7 is moved in the left and right direction and the circular hole 7121 having the same size as the handle insertion hole 411 is formed so that the handle insertion hole 411 formed in the front plate 41 is inserted into the breaker switch The operation handle 8 is not inserted and the breaker switch 32 is turned off to move to the right so that the handle insertion hole 411 and the circular hole 7121) are arranged side by side in series with the same center;
And the other end is hinged to the switch shaft 33 so that when the switch shaft 33 is rotated by the operation of the breaker switch 32, A slide link (72);
The connection pin (73) hinging the on-off slide link (71) and the shaft connecting slide link (72);
A link bracket 74 fixed to the bottom plate 42 of the sliding box 4 and formed with a support pin 7421 at a predetermined height to support the on-off slide link 71 for lateral movement, And an electric motor control section
delete The method according to claim 1,
The on-off slide link 71 is manufactured by bending the flat bar 90 degrees at a predetermined length and then bending it again at 90 degrees to eliminate the gap with the front plate 41,
The on-off slide link 71 is vertically installed at a predetermined distance from the front plate 41 so that the support pin 7421 is not interfered with the front plate 41, A flat link portion 711 having a flat link portion 711;
A bending bar link portion 712 having a flat bar bent at 90 degrees and formed with the circular hole 7121 is formed in a shape that is perpendicular to the flat link portion 711 and is spaced apart from the front plate 41, Lt; / RTI >
The support pin 7421 of the link bracket 74 fixed when the on-off slide link 71 moves in the left-right direction does not interfere with a certain portion of the flat link unit 711, An on-off slide link slit hole 7111 is formed,
A connection pin insertion hole 7112 through which the connection pin 73 is inserted is formed at one end of the flat link portion 711 on the shaft connection slide link 72 side,
The switch shaft 33 is inserted into one end of the shaft connecting slide link 72 for coupling with the switch shaft 33 and is rotated 4 A quadrangular hole 721 having a rectangular shape is formed,
The other end of the shaft connecting slide link 72 is operated to operate the breaker switch 32 so that the on-off slide link 71 can move horizontally and laterally when the shaft connecting slide link 72 rotates The connection pin 73 is formed with a shaft connection slider link slit hole 722 of a long and narrow shape so as to be movable up and down,
The link bracket (74) includes a bottom plate fitting portion (741) fixedly coupled to the bottom plate (42);
And a link support portion (742) vertically formed at one end of the bottom plate coupling portion (741) and having the support pin (7421) fixedly coupled thereto.

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