KR20220017720A - Manual Transfer Switching Lever Apparatus of CTTS(Closed Transition Transfer Switch) - Google Patents

Abstract

A manual switch-lever switching device of a closed uninterruptible automatic transfer switch comprises: manual operation handles provided at opposite sides of either a commercial power source or an emergency power source and configured for manual operation of power switching; a pair of coil stack bundle cylinders disposed at opposite sides of the commercial power source and the emergency power source, respectively, and configured to apply, when the manual operation handles are moved from a neutral position to the outermost position that is a position switched to the side of the commercial power source or emergency power source, a position restoring force to the neutral position with respect to the manual operation handles; a pair of movable coil cylinders disposed at opposite sides of the commercial power source and the emergency power source, respectively, and each end of which is rotatably installed; and a pair of central axis arms rotated by the rotation of the manual operation handles, each end of which is connected to movable coil cylinders, and configured to be rotated to a compression position and an extension position of each of the movable coil cylinders according to a rotation position of the manual operation handles. A rotation range of the central axis arms is a range in which the neutral position and the outermost position of the manual operation handles become the extension position of the movable coil cylinders, and a predetermined section between the neutral position and the outermost position becomes the compression position of the movable coil cylinders. The present invention is capable of quickly and simply performing manual switching and minimizing the time required for overlapping switching during manual switching.

Description

Manual Transfer Switching Lever Apparatus of CTTS (Closed Transition Transfer Switch)

The present invention relates to a manual switching lever switching device for a closed uninterruptible automatic transfer switch, and more particularly, to quickly manually switch between commercial power and emergency power selectively connected to a load without requiring much effort by the operator. It relates to a manual switching lever switching device of a closed type uninterruptible automatic change-over switch that is easy to operate, so that it can be easily performed and the time required for overlapping switching can be minimized during manual switching work.

An uninterruptible automatic changeover switch refers to a device that switches (switchover) from commercial power supplied by KEPCO to emergency power to supply power in advance when a power outage occurs in an emergency such as a natural disaster.

There are two types of uninterruptible automatic transfer switches: open and closed. The open uninterruptible automatic transfer switch (ATS) has the disadvantage of momentary power failure during changeover, while the closed uninterruptible automatic transfer switch (CTTS, Closed Transition) Transfer Switch) has the advantage of being able to transfer without power failure after parallel operation within 100ms through overlapping contact with commercial power (KEPCO) and emergency power (emergency generator).

Hospitals, factories, research institutes, broadcasting stations, etc. have a generator to generate emergency power in order to minimize the damage when a power outage occurs. It is widely used to switch from commercial power to emergency power to uninterruptible power.

1 is a diagram showing an example of a circuit configuration of a closed type uninterruptible automatic transfer switch.

Referring to Figure 1, a closed uninterruptible automatic transfer switch (CTTS: Closed Transition Transfer Switch) normally connects a commercial power supply (Normal Power Supply; 11) and a load (19) from the commercial power source (11) to the load (19). to supply power, and when an abnormality occurs in the commercial power supply 11 , the emergency power supply 12 and the load 19 are connected to supply power.

The closed type uninterruptible automatic changeover switch 13 includes a first fixed terminal 13-1 connected to the commercial power supply 11 that normally supplies power, a second fixed terminal 13-2 connected to the emergency power source 12, The third fixed terminal 13-3 connected to the load 19, and the first fixed terminal or the second fixed terminal and the third fixed terminal are connected to the power from any one of the commercial power source 11 and the emergency power source 12 and a movable terminal 13-4 for supplying to the load 19 side.

When explaining the operation of the closed uninterruptible automatic transfer switch, the closed uninterruptible automatic transfer switch 13 is normally connected to the commercial power supply 11 to supply power to the load 19 side, and the commercial power supply 11 is abnormal. When this is detected, the movable terminal 13-4 is rotated to cut off the connection between the commercial power supply 11 and the load 19 side, and the emergency power supply 12 and the load 19 side are connected to the emergency power supply 12 Power is supplied to the load 19 from the

On the other hand, in the closed type uninterruptible automatic changeover switch 13, the movable terminal 13-4 has a second fixed terminal 13- of the emergency power source 12 from the first fixed terminal 13-1 of the commercial power supply 11 2) or in the process in which the movable terminal 13-4 is connected from the second fixed terminal 13-2 of the emergency power 12 to the first fixed terminal 13-1 of the commercial power 11 , unlike the open type uninterruptible automatic changeover switch, a physical time difference for opening and connection occurs, so the problem that a power outage may occur instantaneously, even for a short time, has been improved. This is a method in which the movable terminal 13-4 is connected from the first fixed terminal 13-1 of the commercial power source 11 to the second fixed terminal 13-2 of the emergency power source 12 is a fixed terminal ( 13-1, 13-2) are alternately connected to each other and not open, but through overlapping contact with fixed terminals (13-1, 13-2) on both sides, parallel operation within 100 ms and then a closed type, not an open type, which is switched without power failure This is possible because it is composed of

In addition, in the process in which the commercial power source 11 and the emergency power source 12 are disconnected from the load 19 and then connected by the above mechanism, the phase angle limit range of the voltage applied to the load 19 side, the voltage difference It was also possible to solve the problem that, when out of the error range of the range and frequency, an unexpected short circuit may occur and damage to the electric device may occur.

In addition to this, in the process in which the commercial power source 11 and the emergency power source 12 are newly connected after being disconnected from the load 19, a number of electrical controllers have been developed to control the above-described short circuit factors not to occur.

On the other hand, the closed type uninterruptible automatic changeover switch may also malfunction or malfunction due to electrical or other factors. process will be performed.

For this manual switching operation, the operator holds the switching operation lever and physically applies force so that the movable terminal 13-4 is the first fixed terminal 13-1 of the commercial power 11 or the second of the emergency power 12 Be connected to the fixed terminal (13-2).

However, most of the manual switching operation levers of the conventional closed type uninterruptible automatic switching switches have a conventional hinge-lever type structure, so the components of the operation lever have a relatively heavy feeling, and their operation is only performed by the operator. Due to the fact that it has a driving mechanism that depends only on the physical force of the operator, there is a problem that the operator takes a lot of force to perform the manual switching operation, thereby reducing the work efficiency and inevitably delaying the work time.

In addition, due to low work efficiency and work time delay, as the time the operator holds the control lever becomes longer, there is a problem in that a human accident may occur due to instantaneous energization.

Therefore, in the manual switching operation through the operator, there is a need to develop a technology for the manual switching operation lever that allows the operator to quickly finish the operation with little force.

The present invention has been devised to solve the above problems, and an object of the present invention is to quickly and conveniently perform manual switching through manual operation without requiring much effort by the operator in the process of manual switching between commercial power and emergency power. It is to provide a manual switching lever switching device of a closed type uninterruptible automatic transfer switch.

Another object of the present invention is to provide a manual switching lever switching device for a closed type uninterruptible automatic switching switch that can minimize the time required for overlapping switching during power switching by a worker's manual operation.

The manual switching lever switching device of the closed uninterruptible automatic transfer switch according to the present invention includes: a manual operation handle for manual operation of switching power to both commercial power or emergency power; A pair of pairs that are placed on both sides of commercial power and emergency power, respectively, and apply the position restoring force to the neutral position for the manual control handle when moving from the neutral position to the outermost position, which is the position switched to the commercial or emergency power. coil bundle cylinder; a pair of movable coil cylinders disposed on both sides of commercial power and emergency power, respectively, and each end of which is rotatably installed; a pair of central shaft arms rotated by the rotation of the manually operated handle, each end connected to the movable coil cylinder, and rotated to the compressed and extended positions of each movable coil cylinder according to the rotational position of the manually operated handle; The rotation range of the central shaft arm is a range in which the neutral position and the outermost position of the manual control handle become the extended position of the movable coil cylinder, and the predetermined section between the neutral position and the outermost position becomes the compressed position of the movable coil cylinder. characterized by being.

Preferably, the manual switch lever switching device of the closed type uninterruptible automatic changeover switch comprises: a pair of central shafts for power transmission manipulators disposed on both sides of commercial power and emergency power, respectively; a pair of central shaft armrests that are linked to the central axis of the manipulator to rotate the central axes of the manipulator according to their rotational positions, respectively, and have a hook protrusion for a stopper at the distal end to prevent the return rotation of the central axis of the manipulator; a handle-shaft connection member for selectively transmitting switching switching rotational force by the manual operation handle to any one of a pair of central shaft hanging arms according to the rotation direction to rotate the central shaft hanging arm; a hook pin for stopping the rotation of the central shaft hanging arm from being restored to its original state in the reverse direction by engaging the stopper hook protrusion of the central shaft hanging arm rotated by the operation of the manual operation handle; a tripco hook gear installed to rotate in engagement with a screw formed on the outer periphery of the manual operation handle; One end is hinged on the plate of the tripco hook gear and the other end extends in both directions of commercial and emergency power, respectively, and is pushed or pulled by the rotation of the tripco hook gear to have a push-pull function, and its body A pair of handle movable members provided with a locking hole in the portion; A pair of trip coil cylinders disposed on both sides of the commercial power and emergency power, respectively, that are inserted into the locking hole of each handle movable member and provide position restoring force to each handle movable member through the locking member. And, each coil bundle cylinder 400 is connected to each manipulator central axis, compressed and expanded according to the rotational position of the manipulator central axis, and each movable coil cylinder has one end fixed to the central axis arm.

Further, it is more preferable that the manual operation handle has a pinion threaded in at least a part of its outer periphery, and the handle-shaft connecting member has a rack engaged with the pinion on one side thereof.

According to the present invention, there are the following effects.

First, since the time for overlapping switching between commercial power and emergency power is minimized, there is an effect that blackout does not occur in the process of switching.

In other words, by connecting an interlocking linker between a pair of manual operation handles that control the ON/OFF of commercial and emergency power, the ON/OFF operation of commercial and emergency power is instantaneous, thereby minimizing overlap switching time to less than 100 msec. Therefore, there is no blackout during the switching process.

Furthermore, in the process of switching between commercial power and emergency power, not sequentially switching between each other, but switching between the two powers overlapping each other, so that no power outage occurs. It is possible to prevent long-term parallel operation in advance, thereby preventing damage to generators and transformers.

Second, it allows the operator to quickly and conveniently perform manual switching between commercial power and emergency power selectively connected to the load without much effort by the operator, and minimizes the time required for overlapping switching during manual switching. there will be

1 is a diagram showing an example of a circuit configuration of a closed type uninterruptible automatic transfer switch
2 is a perspective view showing the external appearance of a switch device according to a preferred embodiment of the present invention;
3 is a perspective view showing a main part of a cabinet of a switch device according to a preferred embodiment of the present invention;
Figure 4 is a perspective view of a state in which the right-side fixed partition plate is removed in Figure 3;
5 is a perspective view showing the operating state of each device when the manual operation handle shown in FIG. 4 is rotated; FIG.
6 is a perspective view of the switch device of FIG. 4 viewed from the right side;
7 is a perspective view showing the main part of the first section of the manual switching lever switching device of the switch according to the preferred embodiment of the present invention;
8 is a perspective view showing the main part of the second section of the manual switching lever switching device of the switch according to the preferred embodiment of the present invention;
9 is a perspective view showing the main parts of the third to fifth zones of the manual switching lever switching device of the switch according to the preferred embodiment of the present invention;
10 is a perspective view of the third to fifth zones of the manual switching lever switching device for a switch viewed from another angle according to a preferred embodiment of the present invention;
11 is a plan view of a manual switching lever switching device of a switch according to a preferred embodiment of the present invention;
12 is a bottom view of a manual switching lever switching device of a switch according to a preferred embodiment of the present invention;
13 is a side view in a switched neutral state for showing the operation of the central shaft hanging arm and the handle-shaft connecting member constituting the main part of the present invention;
14 is a side view showing a state in which the manual operation handle is rotated for the switching operation in FIG. 13 and the central shaft arm is caught on the hook pin 266 for the switching operation is completed
15 is a side view showing a state in which only the manual operation handle is placed in its original position after the switching operation is completed in FIG. 14;
16 is a manual operation handle rotating within a predetermined range in the direction opposite to the rotation direction in FIG. side view showing the state
17 is a side view of a switched neutral state for showing the operation of the movable coil cylinder and the central shaft arm constituting the main part of the present invention;
18 is a side view showing the state of the compression position of the movable coil cylinder during the switching operation in FIG. 17;
19 is a side view showing a state when the movable coil cylinder of FIG. 18 is in an outermost extended position;

The terms or words used in the present specification and claims are not to be construed as limited in their ordinary or dictionary meanings, and on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Hereinafter, an uninterruptible transfer transfer switch according to a preferred embodiment of the present invention will be described in more detail with reference to the accompanying FIGS. 2 to 19 .

A closed uninterruptible automatic changeover switch is a device that automatically or manually switches commercial power and emergency power electrically, and has a technical feature that minimizes the overlapping switching time between commercial power and emergency power.

That is, in the process of switching between commercial power and emergency power, both power sources are not turned ON/OFF sequentially, but overlapped within 100 msec. This was done to prevent a power outage.

In addition, during manual switching work performed by the operator by moving the manual lever for reasons such as inspection, manual operation should not be performed with the power that is not connected to the load, i.e., the power that is turned off, when both power sources are not turned off. There are technical features.

Looking at the overall structure of the uninterruptible automatic transfer switch in which the manual switching lever changeover device according to the present invention is implemented, as shown in FIGS. 2 to 4 , the cabinet 100 constitutes the exterior of the uninterruptible transfer transfer switch, and each part The operation panel 101 including a plurality of operation buttons for operation is formed on the front surface of the cabinet 100 to protect them.

The cabinet 100 is provided so that the commercial power and the emergency power can be configured in two stages, and the upper and lower positions of the commercial power and the emergency power in the cabinet 100 are not limited.

At this time, the manual lever insertion hole 110 is formed in the front of the cabinet 100 .

The manual lever insertion hole 110 is a through hole through which a switching operation lever (not shown) is inserted during manual switching operation, and is a passage to be coupled with the fitting protrusion 220 of the manual operation handle 200 to be described later.

At this time, the manual lever insertion hole 110 is formed in the form of a long hole in the upper and lower directions of the cabinet 100, and although not shown, the switching operation lever (not shown) is provided in the form of a bar do.

The uninterruptible automatic switching switch installed inside the cabinet 100 is a body frame in which various accessories are installed, such as a connection terminal unit connected to commercial power and emergency power, respectively, and an arc extinguishing room 700 in which an arc splitter is mounted. (120); It is installed on the upper body frame 120 and constitutes a basic form with a base operation board 130 on which Structural Mechanism Devices for switching operation are installed. Structural Mechanism Devices for switching operation constitute the main part of the present invention, and will be referred to as a switching operation device hereinafter.

In the switching operation unit, four fixed partition plates having a plate shape are vertically fixed and installed on the base operation board 130 , and the left fixed partition plate 190 and the right fixed partition plate are also installed at both ends of the base operation board 130 . 180 is installed, respectively, and these six fixed partition plates form a partition wall, thereby having a total of five installation spaces. That is, the right fixed partition plate 180, the first to fourth fixed partition plates and the left fixed partition plate 190 are sequentially installed at predetermined intervals from the right to the left in the drawing, thereby forming a foundation mounting structure frame, and this foundation Various movable members and interlocking members are mounted on the mounting frame to implement a mechanical mechanism.

The configuration of the installation space is described with reference to FIGS. 11 and 12 , the trip coil cylinder 300 operating part (first zone) that is the space between the right fixed partition plate 180 and the first fixed partition plate 140; The first fixed partition plate 140 and the second fixed partition plate 150 is the space between the manual handle operation unit (second zone), the second fixed partition plate 150 and the third fixed partition plate 160, the space between the coil The moving coil cylinder 500, which is a space between the house bundle cylinder 400 operating part (third zone), the third fixed partition plate 160 and the fourth fixed partition plate 170 (the fourth zone), the fourth The space between the fixed partition plate 170 and the left fixed partition plate 190 is composed of a limit switch contact operation part (fifth zone).

The main elements installed in these spaces are largely the manipulator central shaft 199, the manual operation handle 200, the trip coil cylinder 300, the coil bundle cylinder 400, the movable coil cylinder 500, and the contact limit switch part. (600) and other movable members and interlocking members.

A pair of manipulator central shafts 199 are installed to pass through all the fixed partition plates 140 , 150 , 160 , 170 in the horizontal direction in the central portion on the base operation board 130 , thereby extending the entire first to fifth zones. It is responsible for the basic axis of physical force transmission.

One manual operation handle 200 is installed in the central part of the second zone.

A pair of trip coil cylinders 300 are respectively installed in the upper and lower regions (the upper region is in the direction of commercial power and the lower region is in the direction of emergency power) on the base operation board 130 in the first zone, and the manual operation handle 200 rotates It is configured to be linked with and provides an elastic force to restore the position of the manual manipulation handle 200 .

Similarly, a pair of coil bundle cylinder 400 is also installed in the upper and lower regions on the base operation board 130 in zone 3 and is configured to interlock with the rotation of the manipulator central axis 199 to determine the position of the manipulator central axis 199. Provides resilience to restore.

A pair of movable coil cylinders 500 are respectively installed in the upper and lower regions on the base operation board 130 in zone 4 and are configured to interlock with the rotation of the manipulator central shaft 199, thereby restoring the position of the manipulator central shaft 199. Elastic force At the same time to provide and assist the movable rotation of the contact limit switch unit 600 to be described later.

A pair of contact limit switch unit 600 is installed at a point adjacent to the central axis 199 of the manipulator in zone 5 to connect or disconnect a power source (commercial power or emergency power) and a load.

And, other various movable and interlocking members are installed, and mechanically connect these main elements.

The peculiarity of the mechanism mechanism of the above components lies in the arrangement structure, and a single manual operation handle 200 is installed in the central part of the second section.

On the other hand, unlike the manual operation handle 200 composed of a single pair, the remaining main elements constituting a pair face each other and face each other in the switching operation device unit, so that the mechanism mechanism connected to commercial power and emergency power can be implemented in the same way. it is made possible

That is, at the upper and lower ends of Zone 1, each of the trip coil cylinders 300 are arranged to face each other and face each other to form a pair, and in Zone 3, the coil bundle cylinder 400, and in Zone 4, the movable coil cylinder ( 500) The operating part is configured in the same arrangement as the first zone.

In addition, a pair of contact limit switch units 600 are respectively installed in the upper and lower regions of the zone in the fifth zone.

In addition, a pair of manipulator central shafts 199 that transmit the rotational force of the manual operation handle 200 to each major element penetrate the first to fourth fixed partition plates 170 in the upper and lower regions of the switching operation unit in the horizontal direction. It is extended and both ends are rotatably installed on the right fixed partition plate 180 and the left fixed partition plate 190, respectively. Both ends of the extended manipulator central shaft 199 are contact plates in the arc extinguishing chamber 700 to which the arc splitter is mounted via the link members of the crank arm and the crankshaft structure in the left and right fixed partition plates, or connected to the contact ribs.

The rotational force transmission mechanism based on the above basic configuration starts with the manual operation handle 200 operation, and the rotational force is transmitted through the manipulator central shaft 199 and other various movable and interlocking members as a medium, and the trip coil cylinder 300 , is implemented by performing a physical conversion for electrical contact of the contact limit switch unit 600 while receiving the auxiliary force of the coil bundle bundle cylinder 400 and the movable coil cylinder 500 .

If the essential part of the manual switch lever switching device of the closed uninterruptible automatic transfer switch according to the present invention will be described in more detail, the manual operation handle 200 is disposed for manual operation of power switching to both commercial power or emergency power. , a pair of coil zip bundle cylinders 400 are disposed on both sides of commercial power and emergency power, respectively, so that the manual operation handle 200 is switched from the neutral position to the commercial power or emergency power when moving to the outermost position. Position restoring force to the neutral position can be applied to the operation handle 200 . Each coil bundle cylinder 400 is connected to each manipulator central axis 199 and compressed and expanded according to the rotational position of the manipulator central axis 199 .

In addition, a pair of movable coil cylinders 500 are also disposed on both sides of the commercial power and emergency power, respectively, and their respective ends are installed to be rotatable. A pair of movable coil cylinders 500 is connected to a central shaft arm 510 that rotates by the rotation of the manual control handle 200, respectively, and one end of each of the central shaft arms 510 is a movable coil cylinder ( 500), it is possible to rotate to the compression position and the extension position of each movable coil cylinder 500 according to the rotation position of the manual operation handle 200.

Here, in the rotation range of the central shaft arm 510 , the neutral position and the outermost position of the manually operated handle 200 become the extended position of the movable coil cylinder 500 , and the neutral position and the highest position of the manually operated handle 200 . A predetermined section between the outer shell positions is formed in a range that becomes the compression position of the movable coil cylinder 500 .

A pair of central shaft armrests 263 link-coupled to a pair of central shafts 199 for power transmission disposed on both sides of commercial power and emergency power, respectively, rotate the central shafts 199 of the manipulators according to their rotational positions, respectively. A hook protrusion for a stopper is provided at its distal end to prevent the return rotation of the central shaft 199 of the manipulator.

And, the handle-shaft connection member 260 coupled with the manual operation handle 200 applies the switching switching rotational force by the manual operation handle 200 according to the rotation direction of the pair of central shaft hanging arms 263 in any one It is configured to be able to rotate the central shaft arm 263 by selectively transferring it to the . To this end, the manual operation handle 200 has a pinion threaded in at least a portion on its outer periphery, and the handle-shaft connecting member 260 has a rack engaged with the pinion on one side thereof.

In addition, a hook pin 266 for locking is formed at an adjacent point within the rotation radius of each central shaft arm 263 , and the stopper of the central shaft arm 263 rotated by the operation of the manual control handle 200 . The hook protrusion is caught, and the reverse direction restoration of the rotated central shaft arm 263 is prevented.

On the other hand, a tripco hook gear 310 is installed on the lower portion of the manual operation handle 200 so that it can be rotated in engagement with a screw formed on the outer periphery of the manual operation handle 200 .

A pair of handle movable members 320 are coupled to the tripco hook gear, one end of which is hinged on the plate of the tripco hook gear 310, and the other end extends in both directions of commercial power and emergency power. . So, it is pushed or pulled by the rotation of the tripco hook gear 310 to have a push-pull function. A locking hole is provided in the body of the handle movable member 320 .

In addition, a pair of trip coil cylinders 300 disposed on both sides of the commercial power and emergency power, respectively, are inserted into the locking hole of each handle movable member 320 and each handle is operated via the locking member 350 . It is designed to provide a position restoring force to the member 320 .

Hereinafter, the structure of each component, starting with the manual operation handle 200, will be described in detail for each zone based on each zone.

First, the components of the manual handle operation unit (zone 2) in which the manual operation handle 200 is installed will be described.

The manual operation handle 200 installed in the center of the manual handle operation unit (zone 2) is a configuration in which a switching operation lever (not shown) is connected during manual switching operation, and is a configuration in which the switching operation starts.

That is, when automatic switching is performed, the manual operation handle 200 is rotated through electrical control so that each component linked to the manual operation handle 200 is interlocked to turn on/off the power, and manual switching is performed In this case, the switching operation lever (not shown) is arbitrarily connected to the manual operation handle 200 so that it can be rotated manually.

The manual operation handle 200 has a shape in which two operation disks are spaced apart from each other by a predetermined distance. The rotational center portion of each disk is axially coupled to the manual handle central shaft 210 installed to pass through the first fixed partition plate 140 and the second fixed partition plate 150, and these disks are connected to the manual handle central shaft ( 210) is rotatable about the center.

And, on the side wall surface in the direction of the first section of the first fixed partition plate 140, the manual handle trip gear plate 220 that is axially coupled to the manual handle central shaft 210 is installed, and is integrated with the manual operation handle 200. is designed to rotate with

On the other hand, the outer periphery of the lower semicircle of the operation disk of the manual operation handle 200 is threaded and engaged with a rack gear 260 (Rack Gear) to be described later so that it can perform the role of a pinion gear. have.

At this time, a fitting protrusion 220 for connection with a switching operation lever (not shown) is formed in the upper semicircular portion of the manual operation handle 200 . It is natural that the inner diameter of the fitting protrusion 220 should correspond to the diameter of the switching operation lever (not shown). In addition, the fitting protrusion 220 corresponds to the manual lever insertion hole 110 of the cabinet 100 .

On the other hand, as described above, a pair of rack gears 260 are installed in the lower region of the manual control handle 200 , and each of these rack gears 260 is formed in a plate-shaped band shape having a predetermined length. Is formed, and on the plate, a locking pin 262 connected to a central shaft 199 of the manipulator to be described later is inserted thereinto and two locking holes 261 are formed in the longitudinal direction.

Each of the rack gears 260 having the same shape is coupled to each other by coupling pins at a predetermined interval so as to move integrally. The screw thread of each rack gear 260 is interlocked with the pinion gear portion of each disk of the manual manipulation handle 200 .

The rack gear 260 has a length such that both ends thereof cross the central axis 199 of the manipulator, and the rack gear 260 is engaged in linkage with a central axis arm coupled to the central axis of the manipulator 199 . The pin 262 is simultaneously inserted into the pair of engaging long holes 261 of the rack gear 260, so that the rotational force of the manual control handle 200 is transmitted to the rack gear 260 through the pinion gear, and a straight line is generated by the transmitted rotational force. As the pushing force of the moving rack gear 260 rotates the second central shaft arm (or central shaft hanging arm) (Arm, 263) via the locking pin 262, the manipulator central shaft 199 also rotates. did it

Second, the components of the operation part (first zone) of the trip coil cylinder 300 will be described.

As shown in Figs. 6 and 7, the gear plate 220 for a manual handle trip that is shaft-coupled with the operation disk of the manually operated handle 200 is also formed with a threaded outer periphery of the lower semicircle, and a trip described later It is screwed with the nose gear 310.

The tripco hook gear 310 provided in the first area is made in a gear shape as a whole, and its rotational center is rotatably installed on a rotation pin installed on the first fixed partition plate 140 .

The tripco hook gear 310 is connected to the band-shaped trip coil pusher 320, which is the handle movable member 320, and is pin-coupled through a fixing pin. Reference numeral 320 is configured to be pushed or pulled in the direction of the trip coil cylinder 300 . The trip coil pusher 320 is configured as a pair and extends in the direction of commercial power and emergency power, respectively.

The end portion of the trip coil cylinder 300 direction side end of the trip coil push rod 320, which is generally band-shaped, has a gently upwardly curved shape and forms a guide inclined surface, and in the curved portion region, a longitudinally engaging hole 261 along the curved portion ) is formed.

And, in the other end region of the trip coil connecting rod 340 that rotates with one end pin-coupled to the nose pin 330 installed on the first fixed partition plate, a cylindrical trip lever 350 protrudes to the outside, , the trip lever 350 has a structure inserted into the engaging long hole 261 .

Thus, when the trip coil connecting rod 340 moves, the lowest and highest positions of the trip lever 350 are varied on the guide inclined surface inside the engaging long hole 261, and the trip coil pusher 320 can be rotated. .

If the guide surface of the trip coil push bar 320 is formed flat, the change in the position of the lowest point and the highest point of the trip lever 350 does not occur, so that the rotation action of the trip coil connecting bar 340 is not smooth. So, in the present invention, the guide surface is designed to be inclined to overcome this.

In addition, the connecting rod connected to the piston inside the trip coil cylinder 300 is pin-coupled to the trip coil connecting rod 340 , so that the elastic restoring force of the trip coil cylinder 300 is applied to the manual operation handle 200 . ) to provide an elastic force to restore the position.

Third, the components of the coil assembly bundle cylinder 400 operating part (third zone) will be described with a focus on the third zone.

As shown in FIG. 9 , in the upper region of the operating unit (zone 3) of the coil zip bundle cylinder 400 through which the manipulator central axis 199 passes, the coil zip bundle cylinder 400 is located on the upper portion of the manipulator central axis 199. The connecting rod installed and connected to the piston inside the cylinder is connected to the third central shaft arm (Arm, 410) installed on the central shaft 199 of the manipulator. The device structure, such as the coil bundle cylinder 400 and the manipulator central shaft 199, is also oppositely disposed in the lower region to have a decalcomanie-like shape.

Fourth, the components of the movable coil cylinder 500 operating part (zone 4) will be described.

Like the connection structure of the third section, as shown in Figs. 9 and 10, the movable coil cylinder 500 is also located in the upper region of the movable coil cylinder 500 operating part (4 zone) through which the manipulator central axis 199 passes. is installed A connecting rod connected to the piston inside the cylinder is connected to the manipulator central shaft 199 .

The manipulator central shaft 199 passes through the fourth fixed partition plate 170 and extends to the fifth zone, and is interlocked with the limit switch device of the fifth zone.

Since the decalcomanie-like opposing arrangement structure of the device structure is equally applied to the entire zones 1 to 5, the mutual energization of the emergency power source and the load is implemented in the same way as the above-described mechanism.

Here, the movable coil cylinder 500 rotates on the movable hinge bracket 540 installed on the fourth fixed partition plate 170, unlike the cylinders 300 and 400 that are fixedly installed in the first and third zones. It is installed so that, when the piston reciprocates, the entire cylinder chamber rotates at a certain angle to perform pendulum motion. This also has a side for smoothing the rotation of the limit switch device.

Hereinafter, the operation and operation of the manual switching lever switching device of the closed type uninterruptible automatic transfer switch having the above configuration will be described.

4 is a view showing a phase state in which both commercial power and emergency power are ON (not actually energized), and a switching operation lever (not shown) coupled with the fitting protrusion 220 of the manual control handle 200 is placed in a neutral state located in the center without rotation.

In this state, each limit switch device in the upper and lower parts of the fifth zone is in contact with the contact terminals of each limit switch 630 (between commercial power and load in the upper part, and between emergency power and the load in the lower part). .

After that, in order to turn ON only the upper power supply (referred to as commercial power for convenience of explanation), the operator rotates the switching operation lever (not shown) upward, that is, clockwise, as shown in FIG. .

At this time, the rack gear 260 of the second zone and the gear plate 220 for manual handle tripping of the first zone are simultaneously operated by the rotational force of the manually operated handle 200. First, the rack gear 260 of the second zone operation is first described.

The rack gear 260 engaged with the operation disk by the rotational force of the manual operation handle 200 moves in a straight line downward where the emergency power side is located. As the rack gear 260 moves in a straight line, the locking pin 262 is caught in the locking hole 261 of the rack gear 260 so that the central shaft 199 of the manipulator on the emergency power side rotates with the movement.

By the rotation of the central shaft 199 of the emergency power side manipulator, the emergency power side coil house bundle cylinder 400 operating unit in the third zone operates. That is, the rotation of the manipulator central shaft 199 presses the piston of the coil bundle bundle cylinder 400 through the third central shaft arm 410 and the connecting rod, and compresses the compression spring inside the cylinder to increase the elastic restoring force. make it possible to have

In addition, in the fourth zone, the fourth central shaft arm 510 also rotates integrally by the rotation of the emergency power side manipulator central shaft 199 and pressurizes the piston inside the movable coil cylinder 500 through the connecting rod to pressurize the compression spring. It is in a state capable of having elastic restoring force by compressing it. Even in this state, the central shaft 199 of the manipulator continues to rotate. From this point on, the rotation of the central shaft 199 of the manipulator becomes much easier by the elastic restoring force of the compression spring of the movable coil cylinder 500 .

That is, Fig. 15 shows the neutral position of the manual manipulation handle 200, and Fig. 17 shows the extension position of the movable coil cylinder 500. Then, as in Fig. 15, the manual manipulation handle 200 rotates. In the middle, the movable coil cylinder 500 is in a compression position, as shown in FIG. 18 , so that the elastic restoring force of the compression spring in the movable coil cylinder 500 is maximized.

When this point has passed, the movable coil cylinder 500 enters the extended state, and from now on, the rotation of the manual control handle 500 becomes smooth by the elastic restoring force, and the operator can easily handle the manual operation handle 500 . rotation can be completed. At this time, the manual operation handle 200 is in the outermost position, and the hook projection for the stopper of the central shaft hanging arm 263 rotated by the operation of the manual operation handle 200 is hooked to the hook pin 266 for locking. In the rear, the reverse direction restoration of the rotated central shaft arm 263 and the manipulator central shaft 199 is prevented. In this state, the operator rotates only the manual operation handle 500 to its original position, as shown in FIG. 15 .

On the other hand, in order to release the locking of the central shaft hanging arm 263 hung on the hook pin 266 for locking, as shown in FIG. As the hook projection is separated from the hook pin 266 for the locking, the central shaft 199 of the manipulator rapidly rotates to its original position by the elastic restoring force of the coil bundle cylinder 400 and returns. At the same time, the rotated fourth central shaft arm 510 of the movable coil cylinder 500 also quickly rotates and returns to the original position shown in FIG. 17 , thereby returning to the state before operation of the entire mechanism.

This time, the operation of the manual handle trip gear plate 220 in the first zone will be described.

The gear plate 220 for manual handle trip in the first zone, which simultaneously operates with the rack gear 260 in the second zone by the rotational force of the manually operated handle 200 , rotates integrally with the manually operated handle 200 . Thus, the tripco hook gear 310 engaged with the manual handle trip gear plate 220 rotates counterclockwise. At this time, the pair of trip coil pushers 320 located under the tripco hook gear 310 obliquely and linearly move toward the commercial power side. The trip lever 350 is rotated with the connecting rod 340 as the center of rotation, and the trip lever 350 pushes the trip coil cylinder 300 on the commercial power side, and presses the piston and trip coil spring (not shown) therein to compress it. It is made in a state of being, so that it can have elastic restoring force. This elastic restoring force serves to help the manual operation handle 200 to rotate smoothly.

Here, the trip lever 350, which is rotated by being caught in the engaging long hole 261 having a curved shape of the trip coil push rod 320, can rotate smoothly even with a relatively small force.

On the other hand, the emergency-only side trip coil pusher 320 pulls the piston inside the emergency power-side trip coil cylinder 300, so that the internal piston and the trip coil spring (not shown) are in an uncompressed state.

The combination of all cylinders consists of two trip coil cylinders 300 for commercial and emergency power in the first zone, two coil bundle cylinders 400 for commercial and emergency power in zone 3, and commercial and emergency power in zone 4 Based on the fact that it consists of two side movable coil cylinders 500, the cylinder operating mechanism will be accurately described.

That is, when the operator rotates the manual operation handle 200 toward the commercial power to connect the commercial power and the load, the trip coil cylinder 300 on the commercial power side in the first zone and the emergency power supply side coil bundle cylinder 400 in the third zone ) is a condition that the compression spring is in a compressed state and has restoring force.

On the other hand, the compression spring of the movable coil cylinder 500 of the fourth section is in a state that undergoes both compression and extension, and serves to facilitate rotation of the manual control handle 200 .

In other words, when the manual operation handle 200 rotates to the commercial power side, the trip coil cylinder 300 on the commercial power side and the coil bundle bundle cylinder 400 on the emergency power side are in a compressed state, and on the contrary, the manual operation handle ( 200) is rotated to the emergency power side, the emergency power side trip coil cylinder 300 and the commercial power side coil house bundle cylinder 400 are in a compressed state.

So, when the operator rotates the manual operation handle 200 to the commercial power side, the rotation operation becomes easy by the elastic restoring force of the emergency power side movable coil cylinder 500, and when returning to the original neutral position, the emergency power side coil house The rotation operation becomes easy by the elastic restoring force of the bundle cylinder 400 .

Therefore, according to the present invention, the operator can finish the handle operation conveniently without applying much force.

The above-described commercial power side operating mechanism is implemented with the same operating principle even when the operator rotates the manual operation handle 200 to the emergency power side in order to connect the emergency power and the load this time.

Although the present invention has been described in detail with respect to the described embodiments, it is apparent to those skilled in the art that various changes and modifications are possible within the scope of the technical spirit of the present invention, and it is natural that such variations and modifications belong to the appended claims.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (3)

In the manual switch lever changeover device of a closed type uninterruptible automatic transfer switch,
Manual operation handle 200 for manual operation of switching power to both sides of commercial power or emergency power;
It is disposed on both sides of the commercial power and emergency power, respectively, and when the manual manipulation handle 200 is moved from the neutral position to the outermost position, which is a position switched to the commercial power or emergency power side, the neutral position with respect to the manual manipulation handle 200 A pair of coil house bundle cylinder 400 for applying a position restoring force to the furnace;
A pair of movable coil cylinders 500 which are respectively disposed on both sides of commercial power and emergency power, each end of which is rotatably installed;
Each of the movable coil cylinders 500 is rotated by the rotation of the manually operated handle 200, and each end is connected to the movable coil cylinder 500 according to the rotation position of the manually operated handle 200. a pair of central axis arms 510 which are rotated to a compressed position and an extended position of ;
includes,
The rotation range of the central shaft arm 510 is that the neutral position and the outermost position of the manual control handle 200 become the extended position of the movable coil cylinder 500, and the neutral position and the outermost position are between the neutral position and the outermost position. A manual switch lever switching device of a closed type uninterruptible automatic changeover switch, characterized in that a predetermined section is the range at which the compression position of the movable coil cylinder (500) is reached.
The method of claim 1,
A pair of power transmission manipulator central shafts 199 disposed on both sides of commercial power and emergency power, respectively;
Link-coupled to the manipulator central axis 199 to rotate the manipulator central axes 199 according to the rotational position, respectively, and a hook protrusion for a stopper for blocking the return rotation of the manipulator central axis 199 is provided at the distal end a pair of central axis support arms (263);
A handle that rotates the central shaft arm 263 by selectively transmitting the switching switching rotational force by the manual operation handle 200 to any one of the pair of central shaft hanging arms 263 according to the rotation direction. shaft connection member 260;
The hook protrusion for the stopper of the central shaft hanging arm 263 rotated by the manipulation of the manual operation handle 200 is caught, and for stopping the reverse direction restoration of the rotated central shaft hanging arm 263. hook pins 266;
a tripco hook gear 310 installed to rotate in engagement with a screw formed on the outer periphery of the manual manipulation handle 200;
One end is hinged on the plate of the tripco hook gear 310 and the other end extends in both directions of commercial power and emergency power, respectively, and is pushed or pulled by the rotation of the tripco hook gear 310 to push-pull. ), a pair of handle movable members 320 having a function and having a locking hole in the body portion;
It is disposed on both sides of the commercial power and emergency power, respectively, and the position restoring force is applied to each of the handle movable members 320 through the locking member 350 which is inserted into the locking hole of each of the handle movable members 320 and is caught. A pair of trip coil cylinders 300 to provide;
further comprising,
Each of the coil bundle cylinder 400 is connected to the respective manipulator central axis 199 and compressed and expanded according to the rotational position of the manipulator central axis 199,
Each of the movable coil cylinders (500) has one end fixed to the central shaft arm (510).
3. The method of claim 2,
The manual operation handle 200 has a pinion threaded in at least a portion on its outer periphery,
The handle-shaft connecting member (260) has a rack engaged with the pinion on one side thereof.

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