CN116054001A

CN116054001A - High-voltage switch control system with continuous closing limitation

Info

Publication number: CN116054001A
Application number: CN202211685025.0A
Authority: CN
Inventors: 潘莉; 孙鹏博
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-02

Abstract

The invention discloses a high-voltage switch control system with continuous closing limitation, which relates to the technical field of high-voltage switches and comprises a high-voltage cabinet, wherein a handcart room is arranged in the high-voltage cabinet, and a control mechanism is arranged in the handcart room and comprises a control switch, an arc extinguishing porcelain sleeve, a moving contact, two side boxes, two springs, two insulating plugs, two side sliding arms and two pull handles. According to the invention, the movable contact in the vacuum arc-extinguishing cavity in the arc-extinguishing porcelain sleeve is pulled downwards by the insulating pull rod, the movable contact is driven to be far away from the fixed contact, the movable contact and the movable contact are separated from each other, the side box is positioned between the movable contact and the movable contact, the insulating plug is pushed out by the elastic force of the spring, the two insulating plugs are driven to be mutually propped together, and are blocked between the movable contact and the movable contact, the contact area is increased, and current cutting is carried out before the vacuum arc-extinguishing cavity is completely filled with air pressure, so that the stability of a continuous opening and closing process is provided, and the potential safety hazard of voltage overload caused by insufficient pressure is avoided.

Description

High-voltage switch control system with continuous closing limitation

Technical Field

The invention relates to the technical field of high-voltage switches, in particular to a high-voltage switch control system with continuous closing limitation.

Background

The high-voltage switch cabinet is widely used in industrial production as a power energy transmission and control device.

According to the Chinese patent publication No. CN207781447U, the patent provides a high-voltage switch control system with continuous switching-on limitation, which comprises a power positive electrode +KM and a power negative electrode-KM from a small bus on the top of a cabinet, a control system power switch QL, a high-voltage switch switching-on control part, a high-voltage switch switching-off control part, a signal part and a continuous switching-on limitation part, wherein the high-voltage switch switching-on control part, the high-voltage switch switching-off control part, the signal part and the continuous switching-on limitation part are sequentially connected between the power positive electrode +KM and the power negative electrode-KM in parallel, the control system power switch QL is connected in series in a total loop between the power positive electrode +KM and the power negative electrode-KM, the switching-on limitation loop is utilized to limit continuous switching-on of the high-voltage switch, short-time reclosing starting in the power-off shutdown process of a motor is avoided, or continuous switching-on is ensured when equipment fails and trips.

In the process of switching on and off arc extinction of the high-voltage load switch, the contact area of the moving contact pressing the fixed contact is relatively small, so that the pressure intensity is insufficient under the action of high voltage, voltage overload is caused, and the safety of continuous closing is affected.

Disclosure of Invention

The invention provides a high-voltage switch control system with continuous closing limitation, which aims to solve the problems in the background technology.

In order to solve the technical problems, the invention adopts the following technical scheme: the high-voltage switch control system with the continuous closing limitation comprises a high-voltage cabinet, wherein a handcart room is arranged in the high-voltage cabinet, and a control mechanism is arranged in the handcart room and comprises a control switch, an arc extinguishing porcelain bushing, a moving contact, two side boxes, two springs, two insulating plugs, two side sliding arms and two pull handles;

the control switch is internally provided with a control system, the arc-extinguishing porcelain sleeve is fixedly arranged on the back surface of the control switch, an upper wiring end and a lower wiring end are respectively communicated with the arc-extinguishing porcelain sleeve, a vacuum arc-extinguishing cavity is arranged in the arc-extinguishing porcelain sleeve, a moving contact and a fixed contact are arranged in the vacuum arc-extinguishing cavity, a moving contact rod is arranged in the moving contact, the bottom of the moving contact is fixedly connected with an insulating pull rod, a fixed contact rod is arranged in the fixed contact, the bottom of the fixed contact rod movably penetrates through the space between the moving contact and is electrically connected with the top of the moving contact rod, two side boxes are respectively fixedly arranged at the top of the moving contact and are symmetrically arranged, two springs are respectively fixedly arranged on the inner walls of the two side boxes, and two insulating plugs are respectively and slidably connected with one ends of the two springs away from the inner walls of the side boxes;

the two insulating plugs are respectively propped against two sides of the outer wall of the static contact rod, the two sideslip arms are respectively and fixedly arranged on the left side and the right side of the control switch, and the two pull handles are respectively and fixedly arranged on the front faces of the two sideslip arms.

The technical scheme of the invention is further improved as follows: still be provided with track mechanism in the handcart room, and track mechanism includes slide rail, slot, hinge piece, cardboard, cutting, linking arm, magnetite, slide rail fixed mounting is in the left side of handcart room inner wall bottom, the right side at the slide rail is seted up to the slot, the hinge piece passes through the bolt and articulates between the inner wall of slot, the quantity of cardboard has two, and respectively fixed mounting is on the right side and the back of hinge piece, the right side the cardboard activity runs through the inner wall of slot to continue to extend right, the cutting is pegged graft at the slot inner wall, magnetite fixed mounting is at the top front side, the bottom front side of cutting respectively, the top front side of slot inner wall and the bottom front side of inner wall all are provided with magnet, the opposite phase is inhaled between magnetite and the magnet.

By adopting the technical scheme, the clamping plates in the scheme are clamped on the two sides of the front face of the control switch, limiting is carried out, and the cutting is inserted along the slot, so that the cutting is propped against the clamping plates to prevent movement.

The technical scheme of the invention is further improved as follows: the sliding rail, the slot, the hinging block, the clamping plate, the cutting and the magnet form a single-side limiting mechanism, the number of the single-side limiting mechanisms is two, the other single-side limiting mechanism is symmetrically arranged on the right side of the bottom of the inner wall of the handcart, and the connecting arm is fixedly arranged on the front faces of the two cutting.

By adopting the technical scheme, the cutting in the scheme is propped against the clamping plate and is adsorbed and kept fixed by the magnet on the inner wall of the slot and the magnet on the cutting.

The technical scheme of the invention is further improved as follows: the handcart room is characterized in that a jack is formed in a room door of the handcart room, and the connecting arm is simultaneously connected to the inner wall of the jack in a sliding mode.

By adopting the technical scheme, the connecting arm in the scheme drives the cutting to be inserted into the slot to limit the clamping plate, and the connecting arm drives the cutting to be pulled out of the slot to release the limit of the clamping plate.

The technical scheme of the invention is further improved as follows: the bottom ends of the two side sliding arms are respectively and slidably connected to the two sliding rails.

By adopting the technical scheme, the sideslip arm in the scheme slides on the sliding rail, so that the risk of rail deformation blocking is reduced.

The technical scheme of the invention is further improved as follows: an instrument room is arranged in the high-voltage cabinet and is positioned at the top of the inner wall of the handcart room, and a protection mechanism is arranged between the back of the outer wall of the instrument room and the back of the inner wall of the handcart room.

By adopting the technical scheme, the instrument room in the scheme is provided with monitoring instruments for all the devices.

The technical scheme of the invention is further improved as follows: the protection mechanism comprises a motor, a first rotating shaft, a first spur gear, a second rotating shaft, a second spur gear, racks and an insulating baffle, wherein the motor is fixedly arranged on the back of the inner wall of an instrument room, the output end of the motor is fixedly connected with one end of the first rotating shaft through a coupler, the other end of the first rotating shaft movably penetrates through the back of the outer wall of the instrument room, the first spur gear is fixedly sleeved on the outer wall of the first rotating shaft, one end of the second rotating shaft is rotatably connected with the back of the outer wall of the instrument room through a bearing, the second spur gear is fixedly sleeved on the outer wall of the second rotating shaft, the first spur gear and the second spur gear are meshed, the number of racks is two, the racks are meshed with the first spur gear and the second spur gear through tooth openings, and the front surface of the insulating baffle is sequentially fixedly connected with the back of the two racks.

By adopting the technical scheme, the motor in the scheme drives the rotating shaft to drive the first spur gear to be meshed with the second spur gear to rotate, so that the rack drives the insulating baffle to descend.

The technical scheme of the invention is further improved as follows: the high-voltage cabinet is internally provided with a bus chamber, the bus chamber is positioned on the back of the outer wall of the handcart chamber, and a bus connecting seat is fixedly arranged in the bus chamber.

By adopting the technical scheme, the upper wiring end connected with the arc extinguishing porcelain bushing in the control switch in the scheme passes through the handcart room and enters the bus room to be connected with the bus connecting seat in a closing way.

The technical scheme of the invention is further improved as follows: the connecting end of the bus connecting seat sequentially and fixedly penetrates through the back of the inner wall of the handcart room and is respectively spliced with the upper wiring end and the lower wiring end of the arc extinguishing porcelain sleeve, and a screen guard plate is fixedly arranged on the back of the inner wall of the handcart room.

By adopting the technical scheme, the insulating baffle in the scheme descends to shield the screen guard plate on the bus connecting seat, so that potential safety hazards caused by leakage of electricity are avoided.

The technical scheme of the invention is further improved as follows: the high-voltage cabinet is characterized in that a grounding chamber and a cable chamber are further arranged at the bottom of the inner wall of the high-voltage cabinet, a grounding assembly is arranged in the grounding chamber, and the lower wiring end of the arc extinguishing porcelain sleeve continuously penetrates through the connecting end of the bus connecting seat in a movable mode and is electrically connected with the grounding assembly.

By adopting the technical scheme, the lower wiring end connected with the arc extinguishing porcelain bushing in the scheme penetrates into the grounding chamber and is connected with the grounding assembly in the prior art, so that the grounding safety is ensured.

By adopting the technical scheme, compared with the prior art, the invention has the following technical progress:

1. the invention provides a high-voltage switch control system with continuous closing limitation, which adopts a vacuum arc extinguishing cavity in an arc extinguishing porcelain sleeve to pull a moving contact downwards by an insulating pull rod, and promote the moving contact to be far away from a fixed contact, and separate two moving and fixed contact rods from each other, at the moment, a side box is positioned between the two moving and fixed contact rods, a spring elastic force pushes out an insulating plug, and promotes the two insulating plugs to be mutually propped together and blocked between the two moving and fixed contact rods, so that the contact area is increased, and current cutting is carried out before the vacuum arc extinguishing cavity is completely filled by air pressure, thereby providing the stability of the continuous opening and closing process and avoiding the potential safety hazard of voltage overload caused by insufficient pressure.

2. The invention provides a high-voltage switch control system with continuous closing limitation, which is characterized in that a connecting arm is held, a cutting is extracted from a slot, a hand lever is rotated outside a handcart, a control switch is moved outwards along a space between two sliding rails, and a clamping plate is extruded to drive a hinge block to rotate by taking a bolt as an axis, so that the control switch is stably moved out along the sliding rails, and the risk of deformation blocking of a rail is reduced.

3. The invention provides a high-voltage switch control system with continuous closing limitation, which adopts a starting motor to drive a rotating shaft to drive a spur gear I to engage a spur gear II to rotate, then drive a rack to displace downwards, and drive an insulating baffle to descend to shield a screen guard plate on a bus connecting seat, so that potential safety hazards caused by leakage and electricity leakage are avoided.

Drawings

FIG. 1 is an internal cross-sectional view of a high voltage cabinet of the present invention;

FIG. 2 is a schematic diagram of a control mechanism according to the present invention;

FIG. 3 is an inner cross-sectional view of the arc suppressing porcelain bushing of the present invention;

FIG. 4 is a schematic diagram of a moving contact according to the present invention;

FIG. 5 is a schematic view of the track mechanism of the present invention;

FIG. 6 is an inner cross-sectional view of the slide rail of the present invention;

fig. 7 is a schematic structural view of the protection mechanism of the present invention.

In the figure: 1. a high-voltage cabinet; 2. a handcart room; 3. a control mechanism; 301. a control switch; 302. arc extinguishing porcelain sleeve; 303. a moving contact; 304. a side case; 305. a spring; 306. an insulating plug; 307. a side slide arm; 308. a pull handle; 4. a track mechanism; 401. a slide rail; 402. a slot; 403. a hinge block; 404. a clamping plate; 405. cutting; 406. a connecting arm; 407. a magnet; 5. an instrument room; 6. a protective mechanism; 601. a motor; 602. a first rotating shaft; 603. a first spur gear; 604. a second rotating shaft; 605. spur gear II; 606. a rack; 607. an insulating baffle; 7. a bus bar chamber; 8. a bus connecting seat; 9. a grounding chamber; 10. a cable compartment.

Detailed Description

The invention is further illustrated by the following examples:

example 1

As shown in fig. 1-4, the invention provides a high-voltage switch control system with continuous closing limitation, which comprises a high-voltage cabinet 1, wherein a handcart room 2 is arranged in the high-voltage cabinet 1, a control mechanism 3 is arranged in the handcart room 2, the control mechanism 3 comprises a control switch 301, an arc-extinguishing porcelain sleeve 302, a moving contact 303, two side boxes 304, two springs 305, two insulating plugs 306, two sideslip arms 307 and two pull handles 308, the control switch 301 is internally provided with the control system, the arc-extinguishing porcelain sleeve 302 is fixedly arranged on the back surface of the control switch 301, the arc-extinguishing porcelain sleeve 302 is respectively communicated with an upper wiring terminal and a lower wiring terminal, a vacuum arc-extinguishing cavity is arranged in the arc-extinguishing porcelain sleeve 302, a moving contact 303 and a fixed contact are arranged in the vacuum arc-extinguishing cavity, the bottom of the moving contact 303 is fixedly connected with an insulating pull rod, the fixed contact is arranged in the fixed contact, the bottom end of the static contact rod movably penetrates through the space between the movable contacts 303 and is electrically connected with the top end of the movable contact rod, the two side boxes 304 are respectively and fixedly arranged at the top of the movable contact 303 and are symmetrically arranged, the two springs 305 are respectively and fixedly arranged on the inner walls of the two side boxes 304, the two insulating plugs 306 are respectively and slidably connected with the inner walls of the two side boxes 304 and are respectively and fixedly connected with one ends of the two springs 305 far away from the inner walls of the side boxes 304, the two insulating plugs 306 respectively abut against the two sides of the outer wall of the static contact rod, the two sideslip arms 307 are respectively and fixedly arranged on the left side and the right side of the control switch 301, the two pull handles 308 are respectively and fixedly arranged on the front surfaces of the two sideslip arms 307, a bus chamber 7 is arranged in the high-voltage cabinet 1, the bus chamber 7 is positioned on the back surface of the outer wall of the handcart chamber 2, a bus connecting seat 8 is fixedly arranged in the bus chamber 7, the connecting ends of the bus connecting seat 8 are sequentially and fixedly penetrated to the back surface of the inner wall of the handcart chamber 2, and the high-voltage cabinet is respectively spliced with an upper wiring end and a lower wiring end of the arc-extinguishing porcelain bushing 302, a screen guard plate is fixedly arranged on the back of the inner wall of the handcart room 2, a grounding room 9 and a cable room 10 are further arranged at the bottom of the inner wall of the high-voltage cabinet 1, a grounding component is arranged in the grounding room 9, and the lower wiring end of the arc-extinguishing porcelain bushing 302 continuously and movably penetrates through the connecting end of the bus connecting seat 8 and is electrically connected with the grounding component.

In this embodiment, the moving contact 303 in the vacuum arc-extinguishing chamber in the arc-extinguishing porcelain sleeve 302 is pulled downwards by the insulating pull rod, and the moving contact 303 is driven to be far away from the fixed contact, and the moving contact and the fixed contact are separated from each other, at this time, the side box 304 is positioned between the moving contact and the fixed contact, the spring 305 pushes out the insulating plug 306 by elasticity, so that the two insulating plugs 306 are driven to be propped against each other, and are blocked between the moving contact and the fixed contact, the contact area is increased, and current cutting is performed before the vacuum arc-extinguishing chamber is completely filled by air pressure, so that the stability of the continuous switching-on and switching-off process is provided, and the potential safety hazard of voltage overload caused by insufficient pressure is avoided.

Example two

As shown in fig. 1, 2, 5 and 6, on the basis of the first embodiment, the present invention provides a technical solution: preferably, track mechanism 4 is still provided with in handcart room 2, and track mechanism 4 includes slide rail 401, slot 402, articulated piece 403, cardboard 404, cutting 405, linking arm 406, magnetite 407, slide rail 401 fixed mounting is in the left side of handcart room 2 inner wall bottom, slot 402 sets up in the right side of slide rail 401, articulated piece 403 articulates between the inner wall of slot 402 through the bolt, the quantity of cardboard 404 has two, and fixed mounting respectively is on the right side and the back of articulated piece 403, right side cardboard 404 activity runs through the inner wall of slot 402, and continue to extend right, cutting 405 pegging graft in slot 402 inner wall, magnetite 407 fixed mounting respectively is provided with the magnetite in the top front side of cutting 405, the bottom front side of cutting 405, the top front side of magnetite 407 and the bottom front side of inner wall of cutting 402 inner wall all are provided with the magnetite 407 and inhale mutually, slide rail 401, slot 402, articulated piece 403, unilateral cardboard 404, cutting 405, magnetite 407 constitute a single-sided stop gear altogether, and quantity has two, another unilateral stop gear symmetry sets up in the right side of handcart room 2 inner wall bottom, linking arm 406 is fixed mounting is at the two side of the inner wall of slip door 307 on two side of the interior walls of cutting 307, the slip door 307 is connected simultaneously to two side of sliding door 307 is seted up to the sliding arm 307.

In this embodiment, the connecting arm 406 is held, the insert 405 is pulled out from the slot 402, the hand lever is rotated outside the handcart room 2, the control switch 301 is moved outwards along the space between the two sliding rails 401, and the clamp 404 is pressed to drive the hinge block 403 to rotate around the pin as the axis, so that the control switch 301 is moved out stably along the sliding rails 401, and the risk of rail deformation blocking is reduced.

Example III

As shown in fig. 1 and 7, on the basis of the first embodiment, the present invention provides a technical solution: preferably, the instrument room 5 is arranged in the high-voltage cabinet 1, the instrument room 5 is located at the top of the inner wall of the handcart room 2, the protection mechanism 6 is arranged between the back of the outer wall of the instrument room 5 and the back of the inner wall of the handcart room 2, the protection mechanism 6 comprises a motor 601, a first rotating shaft 602, a first spur gear 603, a second rotating shaft 604, a second spur gear 605, racks 606 and an insulating baffle 607, the motor 601 is fixedly arranged on the back of the inner wall of the instrument room 5, an output end is fixedly connected with one end of the first rotating shaft 602 through a coupling, the other end of the first rotating shaft 602 movably penetrates through the back of the outer wall of the instrument room 5, the first spur gear 603 is fixedly sleeved on the outer wall of the penetrating end of the first rotating shaft 602, one end of the second rotating shaft 604 is rotatably connected with the back of the outer wall of the instrument room 5 through a bearing, the second spur gear 605 is fixedly sleeved on the outer wall of the other end of the second rotating shaft 604, the spur gear 603 is meshed with the second spur gear 605, the racks 606 are two in number, and are meshed with the first spur gear 603 and the second spur gear 605 through a tooth opening respectively, the front of the insulating baffle 607 is fixedly connected with the back of the two racks 606 in sequence.

In this embodiment, the first rotating shaft 602 drives the first spur gear 603 to engage the second spur gear 605 to rotate by starting the motor 601, so as to drive the rack 606 to displace downward, and drive the insulating baffle 607 to descend to shield the shield on the busbar connecting seat 8, so as to avoid potential safety hazards caused by leakage.

The working principle of the high-voltage switch control system with continuous closing limitation is specifically described below.

As shown in fig. 1-7, the high-voltage cabinet 1 is applied in a room, a control system is arranged in a control switch 301, the system refers to the technical scheme with the publication number of CN207781447U, and is used for limiting and controlling continuous switching-on of the high-voltage switch, avoiding short-time switching-on starting again in the process of power-off shutdown, or continuous switching-on when equipment trips, ensuring the use safety of the equipment, the scheme is not described in detail, an upper wiring terminal connected with an arc-extinguishing porcelain sleeve 302 in the control switch 301 passes through a handcart room 2 and enters a bus room 7 to be switched on with a bus connecting seat 8, a lower wiring terminal connected with the arc-extinguishing porcelain sleeve 302 penetrates into a grounding room 9 and is connected with a grounding component in the prior art, ensuring grounding safety, a vacuum arc-extinguishing cavity in the arc-extinguishing porcelain sleeve 302 is pulled downwards by an insulating pull rod in the process, and the moving contact 303 is urged to be far away from a fixed contact, the side box 304 is positioned between the two movable contact rods, the spring 305 pushes out the insulating plug 306 by elasticity to enable the two insulating plugs 306 to be mutually propped together and blocked between the two movable contact rods, the contact area is increased, current is cut off before the vacuum arc extinguishing cavity is completely filled by air pressure, the stability of a continuous opening and closing process is provided, the potential safety hazard of voltage overload caused by insufficient pressure is avoided, the insulating pull rod pushes the movable contact 303 to rise in the closing process, the top inclined surface of the insulating plug 306 presses the spring 305 to reenter the side box 304 and rise along the static contact rod, the movable contact rod and the movable contact rod are electrically connected again, the connecting arm 406 is held during shutdown maintenance, the cutting 405 is extracted from the slot 402, the hand rod is rotated outside the hand cart chamber 2, the control switch 301 is moved outwards along the space between the two sliding rails 401, and extrude cardboard 404 and drive hinge piece 403 and regard bolt as the axle center rotation, make control switch 301 stable remove along slide rail 401, when resetting control switch 301, extrude cardboard 404 makes its card in control switch 301 positive both sides, and insert cutting 405 along slot 402, make cutting 405 support on cardboard 404 prevent the activity, magnet through slot 402 inner wall and the magnetite 407 on cutting 405 adsorb and keep fixed, when overhauling slide rail 401 and valve in the handcart room are changed, can start motor 601 and make pivot one 602 drive spur gear one 603 mesh spur gear two 605 rotations, then impel rack 606 downward displacement, and drive insulating baffle 607 decline shielding plate on shielding plate 8, avoid the electric leakage to let out the line power between each adapting unit in the high-voltage cabinet 1, be provided with the monitoring instrument that is used for each equipment in the instrument room 5, all belong to prior art, this case does not do excessive description.

The foregoing invention has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. The utility model provides a take high tension switchgear control system of continuous closing limitation, includes high-voltage board (1), its characterized in that: the high-voltage cabinet (1) is internally provided with a handcart room (2), a control mechanism (3) is arranged in the handcart room (2), and the control mechanism (3) comprises a control switch (301), an arc extinguishing porcelain sleeve (302), a moving contact (303), two side boxes (304), two springs (305), two insulating plugs (306), two sideslip arms (307) and two pull handles (308);

the control switch is characterized in that a control system is arranged in the control switch (301), an arc extinguishing porcelain sleeve (302) is fixedly arranged on the back surface of the control switch (301), an upper wiring end and a lower wiring end are respectively communicated with the arc extinguishing porcelain sleeve (302), a vacuum arc extinguishing cavity is arranged in the arc extinguishing porcelain sleeve (302), a moving contact (303) and a fixed contact are arranged in the vacuum arc extinguishing cavity, a moving contact rod is arranged in the moving contact (303), the bottom of the moving contact (303) is fixedly connected with an insulating pull rod, a fixed contact rod is arranged in the fixed contact, the bottom end of the fixed contact rod penetrates through the moving contact (303) and is electrically connected with the top end of the moving contact rod, two side boxes (304) are respectively fixedly arranged at the tops of the moving contact (303) and are symmetrically arranged, two springs (305) are respectively fixedly arranged on the inner walls of the two side boxes (304), and two insulating plugs (306) are respectively and slidably connected with the inner walls of the two side boxes (304) respectively, and one ends of the two springs (305) are far away from the inner walls of the side boxes (305);

the two insulating plugs (306) respectively prop against two sides of the outer wall of the static contact rod, the two sideslip arms (307) are respectively and fixedly arranged on the left side and the right side of the control switch (301), and the two pull handles (308) are respectively and fixedly arranged on the front surfaces of the two sideslip arms (307).

2. The high voltage switch control system with continuous closing limitation of claim 1, wherein: still be provided with track mechanism (4) in handcart room (2), and track mechanism (4) include slide rail (401), slot (402), articulated piece (403), cardboard (404), cutting (405), linking arm (406), magnetite (407), slide rail (401) fixed mounting is in the left side of handcart room (2) inner wall bottom, the right side at slide rail (401) is seted up in slot (402), articulated piece (403) pass through the bolt and articulate between the inner wall of slot (402), the quantity of cardboard (404) has two, and fixed mounting respectively is on the right side and the back of articulated piece (403), right side cardboard (404) activity runs through the inner wall of slot (402) to continue to extend right, cutting (405) are pegged graft at the slot (402) inner wall, magnetite (407) respectively fixed mounting is at the top front side of cutting (405), the bottom front side of the top front side of slot (402) inner wall and the bottom front side of inner wall all are provided with magnetite, opposite magnetism between (407) and the magnetite.

3. The high voltage switch control system with continuous closing limitation of claim 2, wherein: the sliding rail (401), the slot (402), the hinge block (403), the clamping plate (404), the cutting (405) and the magnet (407) form a single-side limiting mechanism, two single-side limiting mechanisms are arranged, the other single-side limiting mechanism is symmetrically arranged on the right side of the bottom of the inner wall of the handcart room (2), and the connecting arm (406) is fixedly arranged on the front faces of the two cutting (405).

4. A high voltage switch control system with continuous closing limitation as claimed in claim 3 wherein: the door of the handcart room (2) is provided with a jack, and the connecting arm (406) is simultaneously connected to the inner wall of the jack in a sliding manner.

5. A high voltage switch control system with continuous closing limitation as claimed in claim 3 wherein: the bottom ends of the two sideslip arms (307) are respectively and slidably connected to the two sliding rails (401).

6. The high voltage switch control system with continuous closing limitation of claim 1, wherein: an instrument room (5) is arranged in the high-voltage cabinet (1), the instrument room (5) is positioned at the top of the inner wall of the handcart room (2), and a protection mechanism (6) is arranged between the back of the outer wall of the instrument room (5) and the back of the inner wall of the handcart room (2).

7. The high voltage switch control system with continuous closing limitation of claim 6, wherein: protection machanism (6) are including motor (601), first (602) of pivot, first (603) of spur gear, second (604) of pivot, second (605) of spur gear, rack (606), insulating baffle (607), motor (601) fixed mounting is at the inner wall back of instrument room (5), and the output passes through the one end fixed connection of shaft coupling and first (602) of pivot, the other end activity of first (602) of pivot runs through to the outer wall back of instrument room (5), the penetrating end outer wall in first (602) of pivot is established to first (603) of spur gear fixed cover, the one end of second (604) of pivot is passed through the bearing and is rotated the outer wall back at instrument room (5) of connection, the other end outer wall in second (604) of pivot is established to second (605) of spur gear fixed cover, meshing between first (603) of spur gear and second (605) of spur gear, the quantity of rack (606) has two to mesh with first (603) of spur gear, second (605) of spur gear respectively through the tooth mouth, the positive fixed connection with the back of two racks (606) in proper order.

8. The high voltage switch control system with continuous closing limitation of claim 1, wherein: the high-voltage cabinet (1) is internally provided with a bus chamber (7), the bus chamber (7) is positioned on the back of the outer wall of the handcart chamber (2), and a bus connecting seat (8) is fixedly arranged in the bus chamber (7).

9. The high voltage switch control system with continuous closing limitation of claim 8, wherein: the connecting end of the bus connecting seat (8) sequentially and fixedly penetrates through the back of the inner wall of the handcart room (2) and is respectively spliced with the upper wiring end and the lower wiring end of the arc extinguishing porcelain bushing (302), and a screen guard plate is fixedly arranged on the back of the inner wall of the handcart room (2).

10. The high voltage switch control system with continuous closing limitation of claim 9, wherein: the high-voltage cabinet is characterized in that a grounding chamber (9) and a cable chamber (10) are further arranged at the bottom of the inner wall of the high-voltage cabinet (1), a grounding component is arranged in the grounding chamber (9), and the lower wiring end of the arc-extinguishing porcelain sleeve (302) continuously and movably penetrates through the connecting end of the bus connecting seat (8) and is electrically connected with the grounding component.