CN104319133B - A kind of switch cubicle of band interlock - Google Patents

Abstract

A switchgear with an interlocking function belongs to the technical field of high-voltage electrical equipment manufacturing. The present invention includes a low-voltage compartment, a high-voltage compartment, and an operating mechanism. The high-voltage compartment is an isolating switch unit, a vacuum switch unit, a grounding switch unit, and a primary element in sequence from top to bottom; the isolating switch unit and the grounding switch The units are linked and connected by a link mechanism, and interlocking braking is realized between the operating mechanism, the isolating switch unit and the grounding switch unit. The switchgear with interlocking function of the present invention is simple in structure, has an integrated linkage mechanism of grounding switch and isolating switch for easy installation and maintenance, and the limit assembly on the operating mechanism is interlocked and braked with the linkage mechanism, so the operation is flexible and the failure rate is low. Low.

Description

A switch cabinet with interlocking function

technical field

The invention relates to the technical field of manufacturing high-voltage electrical equipment, in particular to a switch cabinet with an interlocking function.

Background technique

Switchgear is a device used to connect, disconnect and protect power supply lines and cooperate with relay protection to remove faulty lines. When the power supply line or equipment fails and during normal maintenance, it is necessary to turn off the vacuum switch, disconnect the isolating switch in the switch cabinet, and close the grounding switch before opening the cabinet door for operation. At present, the operator needs to operate the vacuum switch, isolating switch, and grounding switch independently, and the interlock mechanism is often connected with the grounding switch to realize the anti-lock function, which is cumbersome to operate. Opening the cabinet door at the same time will be a safety hazard. Moreover, the existing interlocking mechanism is quite simple, and a lock is generally provided at the cabinet door. For example, the utility model patent CN201994208U discloses a grounding switch interlocking device of a switch cabinet, which mainly utilizes a chain wheel arranged on the main shaft of the grounding switch Cooperate with the interlocking bolts on the door of the switch cabinet, and connect or disconnect with the cabinet door by rotating the main shaft of the grounding switch. In long-term use, the matching between the interlocking bolts and the interlocking wheels will decrease, which will reduce the interlocking lock performance.

Contents of the invention

The invention aims at the deficiencies of the prior art, and provides a switch cabinet with an interlock function which is easy to install and maintain.

The technical solution of the present invention is to provide a switchgear with interlocking function, which is characterized in that it includes a low-voltage compartment, a high-voltage compartment, and an operating mechanism. unit, a grounding switch unit, and a primary element; the isolating switch unit and the grounding switch unit are linked and connected by a linkage mechanism, and the operating mechanism is interlocked with the isolating switch unit and the grounding switch unit brake.

The switch cabinet has an integrated linkage mechanism of isolating switch unit and grounding switch unit, which makes the switch cabinet easy to install, repair and maintain; and also has an operating mechanism with interlocking braking effect, so that when the operator operates the operating mechanism, the isolating switch is disconnected (or closed), the grounding switch is closed (or open), and the cabinet door is unlocked or locked.

As a preference of the present invention, the isolating switch unit includes a main shaft of the isolating switch, a first insulating pull rod, an isolating switch, and a first insulating post; the grounding switch unit includes a grounding knife, a main shaft of the grounding switch, and a second insulating post; the grounding The main shaft of the switch is linked with the main shaft of the isolating switch through the linkage mechanism.

As a preference of the present invention, the linkage mechanism includes a second linkage plate, a movable plate, a long rod, a third linkage plate, and a fourth linkage plate; the linkage mechanism is arranged on the frame along the longitudinal axis, The second linkage plate is linked to the main shaft of the isolating switch, and in turn connects the movable plate, the long rod, the third linkage plate, and the fourth linkage plate, and the fourth linkage plate is connected to The main shaft of the grounding switch is connected in linkage.

As a preference of the present invention, the vacuum switch unit includes a second upper connection terminal, a second solid-sealed pole, a second vacuum bag, a vacuum switch main shaft, a second insulating pull rod, a second crank arm, a second insulating support, Insulation push rod, release, fuse holder, fuse, second solid-sealed insulating layer, and second lower terminal; the vacuum switch unit is connected to the isolating switch through the second upper terminal, and the second The two upper terminals are sequentially connected to the second vacuum bag and the second insulating pull rod arranged in the second solid-sealed pole, the second vacuum bag, the second insulating pull rod and the second insulating pull rod and the second crank arm are connected in a touch manner, and the second crank arm is linked with the main shaft of the vacuum switch; the fuse is carried in the fuse holder, and one end passes through the second solid The sealing insulating layer is connected between the second vacuum bag and the second insulating pull rod, and the other end is respectively connected to the second insulating support connected to the second solid sealing pole and the second insulating support through the release device. The insulating push rod.

As a preference of the present invention, the vacuum switch unit includes a first upper connection terminal, a first solid-sealed pole, a first vacuum bag, a vacuum switch main shaft, a third insulating pull rod, a first crank arm, a first insulating support, The first solid-sealed insulating layer, the conductive row, and the first lower connection terminal; the vacuum switch unit is connected to the isolating switch through the first upper connection terminal, and the first upper connection terminal is sequentially connected to the first The first vacuum bag and the third insulating pull rod in the solid-sealed pole, and the contact between the first vacuum bag and the third insulating pull rod and the third insulating pull rod and the first crank arm The first crank arm is connected in linkage with the main shaft of the vacuum switch; one end of the conductive bar is connected between the first vacuum bag and the third insulating rod through the first solid-sealed insulating layer, The other end is connected to the first solid-sealed pole through the first insulating support.

As a preference of the present invention, the operating mechanism includes a limit assembly integrated with the isolating switch and the grounding switch, an energy storage handle, a closing handle, an opening handle and an energy storage spring; the operating mechanism is arranged on the switch The rack in the cabinet and the partition between the cabinet door.

As a preference of the present invention, the limit assembly includes an operating handle lever action part, a first rotating part and a first limit plate; the operating hand lever action part is linked with the main shaft of the isolating switch; the first rotating One end of the component is fixedly connected to the main shaft of the isolating switch, and the other end is movably connected to the first limiting plate provided on the separator.

As a preference of the present invention, the operating action part includes a first support plate and a round rod; the round rod is arranged coaxially with the main shaft of the isolating switch, between the round rod and the main shaft of the isolating switch along the An elastic part is provided in the axial direction of the main shaft, a first movable bar is arranged inside the round bar which is affected by the elastic part, and a movable groove is provided on the side of the round bar to accommodate the first movable bar; The first support plate and the partition plate are fitted with a chute, and the first support plate is arranged on one side of the round rod, and the first support plate and the first movable bar realize a movable Cooperate.

As a preference of the present invention, the limit assembly further includes a second rotating part; the operating action part also includes a second support plate; one end of the second rotating part is connected to the closing handle and the opening handle respectively. The handle is connected in linkage, and the other end of the second rotating part is connected in linkage with the second support plate; the second support plate and the partition are fitted in a sliding groove, and the second support plate is arranged on On the other side of the round bar, the second support plate is dynamically matched with the first movable bar.

As a preference of the present invention, the operating action part further includes a third support plate, and the third support plate and the partition plate are fitted in a sliding groove, and the third support plate is arranged on the first support plate. On one side of the plate, the third support plate is connected to the first support plate through a first spring.

The present invention has the following beneficial effects:

The switchgear with interlocking function of the present invention is simple in structure, has a grounding switch-isolating switch integrated linkage mechanism for easy installation and maintenance, and the limit assembly on the operating mechanism is interlocked with the linkage mechanism, so the operation is flexible and the failure rate is low. Low.

Description of drawings

Fig. 1 is the structural block diagram of the switchgear with interlocking function of the present invention;

Fig. 2a is the internal partial structure diagram of the switchgear with interlocking function of the present invention;

Figure 2b is a structural view of direction A in Figure 2a;

Fig. 3a is the internal partial structure diagram of the switchgear with interlocking function of the present invention;

Fig. 3b is a structural view of direction A in Fig. 3a;

Fig. 4 is a structural diagram of a limit assembly of a switch cabinet with an interlock function according to the present invention.

In the figure, 1-low voltage compartment; 2-high voltage compartment; 21-isolating switch unit; 211-isolating switch main shaft; 212-first insulating rod; 213-isolating switch; 214-first insulating column; 22-vacuum switch Unit; 2212-vacuum switch spindle; 2212a-the first upper terminal; 2212b-the first lower terminal; 2213-the first solid-sealed pole; 2214-the first vacuum bag; 2215-the third insulating rod; A crank arm; 2217-the first insulating support; 2218-conductive row; 2219-the first solid-sealed insulating layer; 2222a-the second upper terminal; 2222b-the second lower terminal; 2223-the second solid-sealed pole ;2224-the second vacuum bag; 2225-the second insulating rod; 2226-the second arm; 2227-the second insulating support; Two solid-sealed insulating layers; 22293-release device; 23-grounding switch unit; 231-grounding switch main shaft; 232-grounding knife; 233-second insulating column; 4-frame; Mechanism; 61-second linkage plate; 62-movable plate; 63-long rod; 64-third linkage plate; 65-fourth linkage plate; 66-fixed parts on the linkage mechanism; 7-operating mechanism; Limiting component; 711-operation action part; 7111-round rod; 71111-elastic part; 71112-first movable bar; 7112-first support plate; 7112a-first locking part; 7112b-second locking part; 7113-second support plate; 7115-movable circumferential plate; 712-first limiting plate; 7121-connecting part; 7122- pinch plate; 713-first rotating part; 714-second rotating part; Components; 7151-large spring; 72-energy storage handle; 73-closing handle; 74-opening handle; 8-operating panel.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1-3b shows a schematic structural diagram of a switchgear with an interlock function according to the present invention. The switchgear with interlocking function includes a cabinet body, a cabinet door, a frame 4, a partition 5 and switchgear; the cabinet is provided with a low-voltage compartment, a high-voltage compartment, and an operating mechanism; From bottom to bottom, the frame 4 is provided with an isolating switch unit, a vacuum switch unit, a grounding switch unit, and a primary element. Wherein the isolating switch unit and the grounding switch unit form an integrated linkage mechanism through a link mechanism, and the operating mechanism is arranged on the partition plate 5 between the frame 4 and the cabinet door, and the operating mechanism is used to control the closing of the switch cabinet. Opening and energy storage; the interlocking brake is realized between the operating mechanism, the isolating switch unit and the grounding switch unit. When the operator disconnects and closes the isolating switch and the grounding switch, the integrated linkage mechanism and the operating mechanism are interlocked and braked to unlock or lock the cabinet door. This arrangement enables the switchgear to have an operating mechanism that integrates control isolating switch-earth switch-cabinet door, which is flexible in operation, low in equipment failure rate, and convenient for operators to install, maintain and overhaul.

The isolating switch unit, the vacuum switch unit and the grounding switch unit are electrically connected in sequence, and when the switchgear is in operation, work such as breaking short-circuit current or switching load current is performed. The isolating switch unit includes an isolating switch main shaft 211 , a first insulating pull rod 212 , an isolating switch 213 , and a first insulating column 214 . The grounding switch unit includes a grounding knife 232 , a grounding switch main shaft 231 , and a second insulating column 233 . The first insulating column 214 is fixed on the frame 4 and is movably connected with the isolating switch 213, and the isolating switch 213 is linked with the isolating switch main shaft 211 through the first insulating pull rod 212; An insulating pull rod 212 is fitted at an angle with the isolating switch 213 and the isolating switch main shaft 211 respectively. When the isolating switch main shaft 211 rotates, the first insulating pulling rod 212 is subjected to a linkage force to disengage the isolating switch 213 outward. or closed inwards.

As shown in Figures 2a-2b, the vacuum switch unit may include a second upper connection terminal 2222a, a second solid-sealed pole 2223, a second vacuum bag 2224, a vacuum switch main shaft 2212, a second insulating pull rod 2225, and a second crank arm 2226 , the second insulating support member 2227, the insulating push rod 2228, the tripper 22293, the fuse holder 22291, the fuse 2229, the second solid-sealed insulating layer 22292, and the second lower connection terminal 2222b. The isolating switch is connected to the isolating switch through the second upper connection terminal 2222a, and the second upper connection terminal 2222a is sequentially connected to the second vacuum bag 2224 arranged in the second solid-sealed pole 2223 and the second The insulating pull rod 2225, the second vacuum bag 2224 and the second insulating pull rod 2225, and the second insulating pull rod 2225 and the second crank arm 2226 are connected in a touch manner, and the second crank arm 2226 Linkage connection with the vacuum switch main shaft 2212; the fuse 2229 is carried in the fuse holder 22291, and one end is connected to the second vacuum bag 2224 and the second vacuum bag 2224 through the second solid insulating layer 22292 Between the insulating pull rods 2225, the other end is respectively connected to the second insulating support 2227 built in the second embedded pole 2223 and the second insulating support 2227 connected to the second embedded pole 2223 through the tripper 22293. The insulating push rod 2228 . When turning the vacuum switch main shaft 2212 to close the vacuum switch, the vacuum switch main shaft 2212 transmits the rotational force to the moving contact in the second insulating pull rod 2225 through the second crank arm 2226, and the moving contact pushes up so that the first The static contacts in the two vacuum bags 2224 are connected, and the vacuum switch is closed this moment. When the isolating switch and the vacuum switch are closed in sequence, the isolating switch-the second upper connection terminal 2222a-the second vacuum bag-the conductive part in the second solid-sealed insulating layer 22292-the fuse 2229 forms a current path-the second lower connection Terminal 2222b. When a fault occurs, the fuse 2229 is disconnected through the ejector, and the vacuum switch is turned off in turn to extinguish the arc, and the isolating switch is disconnected. The disconnection and closure of the grounding switch are realized with the closure and disconnection of the isolating switch.

As shown in Figures 3a and 3b, the vacuum switch unit can also be the first upper connection terminal 2212a, the first solid-sealed pole 2213, the first vacuum bag 2214, the vacuum switch main shaft 2212, the third insulating pull rod 2215, the first crank arm 2216, a first insulating support 2217, a first solid-sealed insulating layer 2219, a conductive bar 2218, and a first lower connection terminal 2212b; the vacuum switch unit is connected to the isolating switch through the first upper connection terminal 2212a, and the The first upper connection terminal 2212a is sequentially connected to the first vacuum bag 2214 and the third insulating rod 2215 arranged in the first solid-sealed pole 2213, and the first vacuum bag 2214 and the third insulating rod 2215 And the third insulating rod 2215 is connected with the first crank arm 2216 in a touch manner, and the first crank arm 2216 is linked with the vacuum switch main shaft 2212; one end of the conductive row 2218 passes through the The first solid insulating layer 2219 is connected between the first vacuum bag 2214 and the third insulating rod 2215 , and the other end is connected to the first solid pole 2213 through the first insulating support 2217 . The isolating switch is connected to the isolating switch through the first upper connection terminal 2212a, and the first upper connection terminal 2212a is sequentially connected to the first vacuum bag 2214 provided in the first solid-sealed pole 2213 and the third The insulating pull rod 2215, the first vacuum bag 2214 and the third insulating pull rod 2215, and the third insulating pull rod 2215 and the first crank arm 2216 are connected in a touch manner, and the first crank arm 2216 Linkage connection with the main shaft 2212 of the vacuum switch; one end of the conductive bar 2218 is connected between the first vacuum bag 2214 and the third insulating rod 2215 through the first solid-sealed insulating layer 2219, and the other end is connected through the The first insulating support member 2217 is connected to the first solid-sealed pole 2213 . When turning the vacuum switch main shaft 2212 to close the vacuum switch, the vacuum switch main shaft 2212 transmits the rotational force to the movable contact in the third insulating rod 2215 through the first crank arm 2216, and the movable contact pushes up so that the first The static contacts in a vacuum bag 2214 are connected, and the vacuum switch is closed at this moment. After the isolating switch and the vacuum switch are closed in sequence, the isolating switch-the first upper connection terminal 2212a-the first vacuum bag 2214-the conductive part in the first solid-sealed insulating layer 2219-the conductive bar 2218-the first lower connection terminal 2212b constitute a power supply line. When a fault occurs, the conductive bar 2218 is disengaged from the power supply line, and the vacuum switch is turned off in turn to extinguish the arc, and the isolation switch is turned off. The disconnection and closure of the grounding switch are realized with the closure and disconnection of the isolating switch.

In order to improve the flexibility and safety of operation, a linkage mechanism of integrated isolating switch and grounding switch is set. The linkage between the isolating switch and the grounding switch is realized through a link mechanism, which solves the problem of separate operation of the isolating switch and the grounding switch in the prior art. The link mechanism includes a second linkage plate 61 , a movable plate 62 , a long rod 63 , a third linkage plate 64 , and a fourth linkage plate 65 . The link mechanism is arranged on one side of the frame 4 along the longitudinal axis, and one end of the second linkage plate 61 is sleeved on the outside of the main shaft 211 of the isolation switch, and moves with the rotation of the main shaft 211 of the isolation switch; The other end of the second linkage plate 61 is movably connected with one end of the movable plate 62, and the movable fulcrum of the two is fixed on the frame 4; the other end of the movable plate 62 is movable with one end of the long rod 63 connection; the long rod 63 is too long, in order to prevent the long rod 63 from deviating from the direction of the longitudinal axis when the disconnector main shaft 211-the linkage mechanism-the grounding switch main shaft 231 are linked together, so that the transmitted force is deflected or the transmitted power becomes smaller, Furthermore, when the isolating switch is disconnected, the grounding switch cannot be normally closed, and a fixing part 66 needs to be set at a local position of the long rod 63, so that the long rod 63 remains arranged along the longitudinal axis of the frame 4; The other end of 63 is connected with one end of the third linkage plate 64, and the other end of the third linkage plate 64 is movably connected with one end of the fourth linkage plate 65; one end of the fourth linkage plate 65 is sleeved on the The outer side of the grounding switch main shaft 231. Wherein, the second linkage plate 61 is connected to the movable plate 62 at an angle, and the third linkage plate 64 is connected to the fourth linkage plate 65 at an angle. When the isolating switch main shaft 211 rotates counterclockwise, the isolating switch is disconnected, and the rotating force of the isolating switch main shaft 211 drives the linkage mechanism to move through the second linkage plate 61, the movable plate 62, the long rod 63, and the third linkage plate in turn. 64. The fourth linkage plate 65 transmits the rotational force, so that the fourth linkage plate 65 drives the grounding switch main shaft 231 to rotate to close the grounding switch; when the isolating switch main shaft 211 rotates clockwise, the isolating switch is closed, and the isolating switch main shaft 211 The rotation force drives the link mechanism to act in reverse, and drives the grounding switch main shaft 231 to rotate in the reverse direction to disconnect the grounding switch.

The operating mechanism is arranged on the partition plate 5 on one side of the frame 4, which includes the energy storage handle 72 of the vacuum switch, the opening handle 74, the closing handle 73, the opening indicator, the closing indicator, the energy storage spring And energy storage indication and isolating switch-earth switch-cabinet door integrated interlocking brake limit components. Under the cooperative action of the energy storage handle 72, the opening handle 74, and the closing handle 73 of the limit assembly, the linkage mechanism of the isolating switch and the grounding switch is interlocked and braked to realize the closing of the isolating switch and the opening of the grounding switch at the same time. And the switchgear is locked, while the isolating switch is opened, the grounding switch is closed and the switchgear is opened.

As shown in FIGS. 2 a , 3 a , and 4 , the limiting assembly includes an operating action part, a first rotating part 713 and a first limiting plate 712 . The operation action part is arranged through the partition plate 5 between the cabinet body and the cabinet door, the operation action part is linked with the main shaft 211 of the isolating switch, and one end of the first rotating part 713 is connected to the main shaft of the isolating switch. 211 is fixedly connected to rotate with the isolating switch main shaft 211 , and the other end of the first rotating part 713 is movably connected to the first limiting plate 712 provided on the partition 5 . The operating components include a first support plate 7112 and a round rod 7111 . The round rod 7111 is arranged coaxially with the isolating switch main shaft 211 on the outside of the isolating switch main shaft 211, and an elastic member 71111 is arranged between them. A first movable bar 71112 is also arranged inside the round rod 7111 , and a movable groove is provided on a side of the round rod 7111 for accommodating the first movable bar 71112 . The first support plate 7112 and the partition plate 5 are fitted with a chute, such that the movement direction of the chute of the first support plate 7112 is the horizontal movement direction on the partition plate 5, and the first support plate 7112 It is arranged close to the operation action part, and when the cabinet door is opened, the first movable bar 71112 is just blocked by the first support plate 7112 to prevent the first movable bar 71112 from moving. When the cabinet door is closed, the closing of the cabinet door makes the first support plate 7112 move horizontally, then the first support plate 7112 no longer blocks the first movable bar 71112, and at this time, it can move to the elastic part 71111 in the operation action part. When lateral force is applied, the first movable bar 71112 moves along the movable groove of the round rod 7111, and then a rotational force is applied to the main shaft 211 of the isolating switch, so that the isolating switch is closed and the grounding switch is opened. The cooperation of the above structure ensures the safety of operation and prevents misoperation.

The limiting assembly may further include a second rotating part 714 . One end of the second rotating part 714 is linked to the closing handle 73 and the opening handle 74, and the other end of the second rotating part 714 is linked to the second support plate 7113. After the handle 72 completes the energy storage, the closing handle 73 moves, so that the second rotating part 714 drives the second support plate 7113 to move along the movable circumferential plate 7115 arranged on the partition 2 . The second support plate 7113 also cooperates with the partition plate 5 in a chute, such that the movement direction of the chute of the second support plate 7113 is to move in the vertical direction on the partition plate 5, and the first The movable strip 71112 is just blocked by the second support plate 7113 to prevent the first movable strip 71112 from moving, and the cabinet door is locked. When the opening handle moves, the second rotating part 714 drives the second support plate 7113 to move along the movable circumferential plate 7115 in the opposite direction to the above, and the first movable bar 71112 is no longer moved by the first movable bar 71112. Two support plates 7113 block. When the elastic part 71111 in the operation action part is subjected to a lateral force, the first movable bar 71112 moves along the movable groove of the round rod 7111, and then applies a rotational force to the main shaft 211 of the isolating switch, and the isolating switch is disconnected. The grounding switch is closed.

Wherein, the first support plate 7112 includes a first locking portion 7112a and a second locking portion 7112b, a first spring is connected between the first locking portion 7112a and the second locking portion 7112b, and the first The support plate 7112 cooperates with the cabinet door. When the cabinet door is closed, the first locking part 7112 cooperates with the knife-shaped head of the cabinet door to lock with the cabinet door. At the same time, the first support plate 7112 is horizontal on the partition 2 direction movement, so that the second locking part 7112b no longer blocks the first movable bar 71112; In addition, the limiting assembly may further include a third rotating component 715 . The third rotating part 715 includes a fixed part, which is fixedly arranged on the isolating switch main shaft 211 and rotates together with the isolating switch main shaft 211. There is a large spring 7151 on the frame 4, and the large spring 7151 and The fixed parts are connected through the first linkage plate. When the third rotating part 715 rotates, the large spring 7151 is stretched or compressed by the first linkage plate, and the large spring 7151 is stored as energy for the next operation. When the switch is closed or disconnected, it can be completed more quickly and effectively. Wherein, the fixing part is a ring-shaped part with an opening, a first extension block and a second extension block are arranged on the circumferential direction of the ring-shaped part, and the first extension block and the second extension block are arranged in the circumferential direction. The distance is the action distance of the operation action part, that is, the disconnector main shaft 211 rotates between the first extension block and the second extension block, and the two ends are the state points of the disconnector closed or disconnected switch, respectively .

In the above scheme, the first rotating part 713 is a part that rotates with the disconnector main shaft 211, one end of which is fixed on the disconnector main shaft 211 by bolts, and rotates with the disconnector main shaft 211; the other end It is flexibly connected with the first limiting plate 712 through a connecting rod or a hooked part. The first limiting plate 712 may include a connecting portion 7121 and a buckle plate 7122, and the first limiting plate 712 and the partition plate 5 are also fitted with a chute, so that the buckle of the first limiting plate 712 The lowest position of the plate 7122 is just flush with the highest point of the operation panel 8, which is a metal panel arranged on a partition, on which a first support plate 7112, a second support plate 7113 and a round rod 7111 are arranged. The connecting part 7121 of the first limiting plate 712 is movably connected with the first rotating part 713 through the second spring, that is, when the disconnector main shaft 211 rotates, the first rotating part 713 rotates, and the first rotating part 713 rotates. A connecting rod or a hooked part of a rotating part 713 drives the second spring to be deformed, so that the first limiting plate 712 moves along its chute.

In order to improve the operating safety, it is necessary to set up multiple cabinet door locks. When it is necessary to perform maintenance and overhaul work, the operator first operates the opening and closing switch of the vacuum switch to disconnect the vacuum switch, and then uses the operating lever to run and operate the action parts. When the isolation switch is closed and the grounding switch is disconnected, the switch cabinet door is closed, the first support plate 7112 and the second support plate 7113 are respectively arranged on both sides of the round rod 7111, and the first support plate 7112 slides on it. On the left side of the groove, the first support plate 7112 is locked with the cabinet door by its first locking portion 7112a; the second support plate 7113 is on the bottom side of its chute, and the first movable bar 71112 is The second support plate 7113 is blocked; the first limiting plate 712 is at the top of its chute, that is, the pinch plate 7122 is higher than the partition plate 5, and the pinch plate cooperates with the parts on the switch cabinet door to realize further locking. After opening the opening handle 74, the second rotating part 714 drives the second support plate 7113 to rotate counterclockwise to move to the top side of its chute, so that the second support plate 7113 no longer blocks the first movable bar 71112, and the operation When the rod is inserted into the round rod 7111, a lateral force is applied to the first movable bar 71112 to move along the movable groove of the round rod 7111. When the operating lever rotates counterclockwise, the isolating switch main shaft 221 rotates counterclockwise on the one hand to disconnect the isolating switch 213 and to close the grounding switch linked through the link mechanism; A limiting plate 712 moves along the direction of the end of its chute, and the buckle 7112 of the first limiting plate 712 moves to the highest point of the dividing plate 5 and stops, which can release the locked state between the first limiting plate 712 and the cabinet door; On the one hand, the third rotating part 715 is used to stretch the large spring 7151 through the first linkage plate, so as to store enough energy for closing the isolating switch 213-disconnecting the grounding switch next time. After taking out the operating rod, the isolating switch main shaft 221 is fixed at the rotated position, and the switch cabinet door can be opened, because the knife-shaped head on the switch cabinet door and the first locking part 7112a on the first support plate 7112 The cooperation is controlled by the relative offset position, that is, the first locking part 7112 is not directly opposite to the knife-shaped head, and there is a relative offset position between the two. After the operator opens the cabinet door, the first support plate 7112 is affected by the second A spring resets, that is, the first support plate 7112 blocks the first movable bar 71112 to avoid misoperation when the cabinet door is opened. When the isolating switch needs to be closed again, close the switch cabinet door in turn, insert the operating lever and rotate clockwise to perform the closing of the isolating switch-disconnecting of the grounding switch. At this time, the linkage structure due to the rotation acts in reverse, and finally returns to the initial state. The energy storage handle 72 is used to store energy again, and the second support plate 7113 is blocked from the first movable bar 71112 by the closing handle 73, and the above-mentioned multiple cabinet doors are locked, which further improves the operation safety and prolongs the equipment maintenance cycle. The operation of the energy storage handle 72 makes the energy storage spring store energy to provide the closing handle 73 and the opening handle 74. The energy storage linkage mode is similar or the same as the existing switch cabinet operating mechanism; the closing handle 73 and the opening handle 74 actions to realize the clockwise and counterclockwise rotation of the second rotating part 714 respectively, and then the second rotating part 714 drives the second support plate 7113 to move downward and upward along its chute respectively.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Under the premise of not departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention, and the technical content claimed in the present invention has been fully described in the claims.

Claims (7)

1. A switchgear with interlocking function, characterized in that it includes a low-voltage compartment (1), a high-voltage compartment (2), and an operating mechanism (7), and the high-voltage compartment (2) is sequentially arranged from top to bottom It is an isolating switch unit, a vacuum switch unit, a grounding switch unit, and a primary element; the isolating switch unit and the grounding switch unit are linked and connected by a linkage mechanism (6), and the operating mechanism (7) is connected to the isolating switch unit and the grounding switch unit to achieve interlocking braking; the operating mechanism includes a limit assembly integrated with the isolating switch and the grounding switch for interlocking braking, closing handle (73), and opening handle (74) , energy storage handle (72) and energy storage spring; the operating mechanism is set on the frame (4) in the switch cabinet and the partition (5) between the cabinet door; the limit assembly includes the action of the operating lever parts, the first rotating part (713) and the first limiting plate (712); the operating part of the operating lever is linked with the main shaft of the isolating switch (211); one end of the first rotating part (713) is connected to the The isolating switch main shaft (211) is fixedly connected, and the other end is movably connected with the first limit plate (712) arranged on the partition (5); the operating lever action part includes a first support plate ( 7112) and a round rod (7111); the round rod (7111) is set coaxially with the disconnector main shaft (211), between the round rod (7111) and the disconnector main shaft (211) along the isolation An elastic part (71111) is provided in the axial direction of the switch main shaft (211), and a first movable bar (71112) is arranged inside the round rod (7111) to be affected by the elastic part (71111), and the round rod ( 7111) is provided with a movable groove on the side to accommodate the first movable bar (71112); the first support plate (7112) and the partition plate (5) form a chute fit, and the first A support plate (7112) is arranged on one side of the round rod (7111), and the first support plate (7112) realizes dynamic cooperation with the first movable bar (71112). 2. The switchgear with interlock function according to claim 1, characterized in that, the isolating switch unit comprises a main shaft (211) of an isolating switch, a first insulating pull rod (212), a isolating switch (213), a first An insulating post (214); the grounding switch unit includes a grounding knife (232), a grounding switch main shaft (231), and a second insulating post (233); the grounding switch main shaft (231) and the isolating switch main shaft (211) Linkage connection through the linkage mechanism. 3. The switchgear with interlock function according to claim 2, characterized in that, the linkage mechanism comprises a second linkage plate (61), a movable plate (62), a long rod (63), a third linkage plate (64), fourth linkage plate (65); the linkage mechanism is arranged on the frame (4) along the longitudinal axis, and the second linkage plate (61) is connected with the isolating switch main shaft (211 ) linkage connection, and connect the movable plate (62), the long rod (63), the third linkage plate (64), the fourth linkage plate (65), and the fourth linkage plate (65) is connected in linkage with the grounding switch main shaft (231). 4. The switchgear with interlock function according to claim 2, characterized in that, the vacuum switch unit includes a second upper terminal (2222a), a second solid-sealed pole (2223), a second vacuum bag (2224), vacuum switch spindle (2212), second insulating rod (2225), second crank arm (2226), second insulating support (2227), insulating ejector rod (2228), tripper (22293), Fuse holder (22291), fuse (2229), second solid-sealed insulating layer, second lower terminal (2222b); the vacuum switch unit is connected to the isolating switch through the upper terminal, and the second The upper connection terminal (2222a) is sequentially connected to the second vacuum bag (2224) and the second insulating pull rod arranged in the second solid-sealed pole (2223), the second vacuum bag (2224) and the The second insulating pull rod (2225) and the second insulating pull rod (2225) are connected to the second crank arm (2226) in a touch manner, and the second crank arm (2226) is connected to the main shaft of the vacuum switch (2212) linkage connection; the fuse (2229) is carried in the fuse holder (22291), and one end is connected to the second vacuum bag (2224) and Between the second insulating rods (2225), the other end is respectively connected to the second insulating support (2227) connected to the second solid-sealed pole (2223) and The insulating push rod. 5. The switchgear with interlock function according to claim 2, characterized in that, the vacuum switch unit includes a first upper terminal, a first solid-sealed pole (2213), a first vacuum bag (2214 ), the main shaft of the vacuum switch (2212), the third insulating rod (2215), the first crank arm (2216), the first insulating support (2217), the first solid-sealed insulating layer (2219), the conductive row (2218), The first lower terminal (2212b); the vacuum switch unit is connected to the isolating switch through the first upper terminal (2212a), and the first upper terminal (2212a) is sequentially connected to the first solid The first vacuum bag (2214) and the third insulating rod (2215) in the sealing pole (2213), the first vacuum bag (2214) and the third insulating rod (2215) and the third The insulating pull rod (2215) is connected to the first crank arm (2216) in a touch manner, and the first crank arm (2216) is linked to the main shaft of the vacuum switch (2212); the conductive bar (2218 ) one end is connected between the first vacuum bag (2214) and the third insulating rod (2215) through the first solid-sealed insulating layer (2219), and the other end is passed through the first insulating support (2217) ) is connected to the first solid-sealed pole (2213). 6. The switchgear with interlock function according to claim 1, characterized in that, the limit assembly further includes a second rotating part (714); the operating handle lever action part also includes a second support plate ( 7113); one end of the second rotating part (714) is linked with the closing handle (72) and the opening handle respectively, and the other end of the second rotating part (714) is connected with the second The support plate (7113) is linked and connected; the second support plate (7113) and the partition plate (5) are fitted in a sliding groove, and the second support plate (7113) is arranged on the round rod (7111 ), the second support plate (7113) and the first movable bar (71112) realize dynamic cooperation. 7. The switchgear with interlock function according to claim 1, characterized in that, the action part of the operating lever further includes a third support plate (7114), and the third support plate (7114) and the The partitions (5) are fitted with sliding grooves, and the third support plate (7114) is arranged on one side of the first support plate (7112), and the third support plate (7114) is connected to the first support plate (7114). A support plate (7112) is connected through a first spring.