CN108962666B - An intelligent outdoor high-voltage AC vacuum load switch - Google Patents

Abstract

The invention discloses an intelligent outdoor high-voltage alternating current vacuum load switch, which comprises a fixed support and a fixed mounting seat, wherein the fixed mounting seat is arranged at the rear end position of the fixed support through welding, a first insulating column is arranged at the front end surface position of the top end of the fixed support, an elastic wire holder is arranged at the front end position of the first insulating column, an isolation disconnecting link is electrically connected at the front end surface position of the elastic wire holder through contact, a rotary switch device is horizontally and rotatably arranged at the middle position inside the fixed support, an insulating connecting rod is rotatably arranged at the middle position of the rotary switch device, and the insulation disconnecting link can be effectively and electrically connected with the isolation disconnecting link through the arranged elastic wire holder, so that poor contact between the isolation disconnecting link and an incoming wire holder is prevented; the locking of the rotary connecting rod can be ensured through the rotary switch device, and the operation is simple and convenient, and time and labor are saved.

Description

An intelligent outdoor high-voltage AC vacuum load switch

Technical Field

The invention belongs to the technical field related to electric power equipment, and in particular relates to an intelligent outdoor high-voltage AC vacuum load switch.

Background technique

High-voltage AC vacuum load switch is suitable for three-phase AC high-voltage power system, and is used in conjunction with power distribution equipment, ring network switchgear, combined substation, etc. It has the ability to break rated current, overload current and prevent equipment from running in the absence of phase. The switch has a clearly visible isolation break. The high-voltage AC vacuum load switch has a compact structure, small size, long life, strong closing and breaking capacity, and easy operation and maintenance. The high-voltage AC vacuum load switch can be used as a ring network power supply unit or terminal equipment, and plays a role in the distribution, control and protection of electric energy.

The existing outdoor high-voltage AC vacuum load switch technology has the following problems:

1. The isolating knife switch in the existing outdoor high-voltage AC vacuum load switch is electrically connected to the incoming line terminal block by contact. During the long-term operation of the high-voltage AC vacuum load switch, the isolating knife switch and the incoming line terminal block may have poor contact, resulting in unstable current transmission and unstable operation of the power grid connected to the rear end of the high-voltage AC vacuum load switch;

2. The rotary switch installed inside the existing outdoor high-voltage AC vacuum load switch is inconvenient to rotate during actual use, which causes the electrician to waste time and effort in the rotation operation. In addition, the current self-locking effect of the rotary switch is not ideal, which can easily cause poor contact between the isolation knife switch and the incoming line terminal block. In severe cases, it may cause power outages, causing great inconvenience in actual use.

Summary of the invention

The purpose of the present invention is to provide an intelligent outdoor high-voltage AC vacuum load switch to solve the problem of poor contact between the isolation switch and the incoming line terminal block and the inconvenience of rotating the rotary switch in actual use.

To achieve the above object, the present invention provides the following technical solutions:

An intelligent outdoor high-voltage AC vacuum load switch comprises a fixed bracket and a fixed mounting seat, wherein the fixed mounting seat is installed at the rear end of the fixed bracket by welding, a lightning protection insulating column is installed at the top end of the fixed bracket, a first insulating column is installed at the front end of the top of the fixed bracket, an elastic wiring seat is installed at the front end of the first insulating column, an isolating knife switch is electrically connected to the front end of the elastic wiring seat by contact, a vacuum arc extinguishing chamber is arranged at the right side of the front end of the elastic wiring seat, the vacuum arc extinguishing chamber is fixedly connected to the fixed bracket by a connecting rod, an arc-starting rod is installed on the left end of the vacuum arc extinguishing chamber by rotation, and the other end of the arc-starting rod is rotationally connected to the top of the isolating knife switch by a first rotating shaft. A rotating switch device is horizontally installed at the middle position inside the fixed bracket for rotation, an insulating connecting rod is installed at the middle position of the rotating switch device through rotation, the other end of the insulating connecting rod is rotationally connected to the isolating knife switch, the bottom end of the isolating knife switch is rotationally connected to the fuse mounting seat through a second rotating shaft, a second insulating column is installed at the rear end of the fuse mounting seat, the other end of the second insulating column is fixedly connected to the front end surface of the fixed bracket, a high-voltage fuse is electrically fixedly connected at the lower end of the fuse mounting seat, the other end of the high-voltage fuse is electrically connected to the outlet terminal block, a third insulating column is installed at the left end of the outlet terminal block, and the upper end of the third insulating column is fixedly connected to the lower end surface of the fixed bracket.

Preferably, the elastic wiring seat includes an insulating fixing seat, an inner insulating limit rod, an outer insulating limit rod, a contact seat, an insulating spring and an incoming line wiring seat, an inner insulating limit rod is installed at the middle position of the right end surface of the insulating fixing seat, an outer insulating limit rod is connected to the right end position of the inner insulating limit rod through a sliding sleeve, the other end of the outer insulating limit rod is fixedly connected to the left end surface of the contact seat, an insulating spring is sleeved on the outside of the inner insulating limit rod and the outer insulating limit rod, one end of the insulating spring is fixedly connected to the right end surface of the insulating fixing seat, the other end of the insulating spring is fixedly connected to the left end surface of the contact seat, an incoming line wiring seat is installed at the upper end position of the contact seat, and the elastic wiring seat is fixedly connected to the first insulating column through the insulating fixing seat.

Preferably, the rotary switch device comprises a rotary connecting rod, a rotary connecting seat, a rotary connecting hole, a rotating seat, a sleeve hole, a limiting groove, a limiting protrusion, a fixed limiting seat, a sliding limiting seat, a sliding connecting hole, a limiting spring and a rotary handle; a rotary connecting seat is installed at the middle position of the upper end of the rotary connecting rod, a rotary connecting hole is arranged at the middle position inside the rotary connecting seat, a rotary seat is sleeved at the left and right end positions of the rotary connecting rod, a sleeve hole is arranged inside the rotary seat, the rotary seat is sleeved with the rotary connecting rod through the sleeve hole, a limiting groove is arranged on the outside of the sleeve hole, and the limiting groove is fixedly arranged in the rotary seat. A limiting protrusion is sleeved inside the limiting groove, and the limiting protrusion is fixedly installed on the outside of the rotating connecting rod. A fixed limiting seat is arranged on the left side of the rotating connecting seat, and the fixed limiting seat is fixedly connected to the rotating connecting rod. A sliding limiting seat is arranged on the left side of the fixed limiting seat, and a sliding connection hole is arranged inside the sliding limiting seat. The sliding limiting seat is sleeved with the rotating connecting rod through the sliding connection hole. A limiting spring is arranged between the fixed limiting seat and the sliding limiting seat, and the limiting spring is sleeved on the outside of the rotating connecting rod. A rotating handle is installed at the left end of the rotating connecting rod, and the rotating switch device is fixedly connected to the fixed bracket through the rotating seat.

Preferably, three lightning protection insulating columns are provided in total and have the same size and specifications, and the lightning protection insulating columns are evenly installed at the top position of the fixed bracket.

Preferably, three of each of the first insulating pillars, the second insulating pillars and the third insulating pillars are provided and have the same size and structure.

Preferably, the rotary switch device can drive the isolating knife switch to rotate left and right relative to the second insulating column through the insulating connecting rod.

Preferably, the diameter of the inner insulating limit rod is smaller than the diameter of the outer insulating limit rod, and the contact seat can move left and right relative to the insulating fixing seat through the insulating spring.

Preferably, the rotating connecting rod can slide left and right in the rotating seat, and there are four limiting grooves in total and they are symmetrically arranged at 90 degrees in the rotating seat. The rotating seat at the left end is fixedly connected to the left end surface of the fixed bracket, and the rotating seat at the right end is fixedly connected to the right end surface of the fixed bracket.

Compared with the prior art, the present invention provides an intelligent outdoor high-voltage AC vacuum load switch, which has the following beneficial effects:

The present invention is equipped with an elastic wiring seat, which includes an insulating fixing seat, an inner insulating limiting rod, an outer insulating limiting rod, a contact seat, an insulating spring and an incoming wiring seat; the advantage of this is that the elastic wiring seat can be effectively electrically connected to the isolation knife switch, ensuring that during the long-term operation of the high-voltage AC vacuum load switch, there will be no poor contact between the isolation knife switch and the incoming wiring seat, which can ensure the stability of current transmission and further ensure the stable operation of the power grid connected to the rear end of the high-voltage AC vacuum load switch;

The present invention is equipped with a rotary switch device, which includes a rotary connecting rod, a rotary connecting seat, a rotary connecting hole, a rotary seat, a sleeve hole, a limiting groove, a limiting protrusion, a fixed limiting seat, a sliding limiting seat, a sliding connecting hole, a limiting spring and a rotary handle; the advantage of this is that the rotary handle can drive the rotary connecting rod to slide left and right and rotate in the rotary seat and the fixed bracket, and the rotary handle is used to drive the rotary connecting rod to slide to the left, so that the limiting protrusion set on the outside of the rotary connecting rod is separated from the limiting groove set in the rotary seat, and then the rotary connecting rod is driven to rotate by the rotary handle, so that the isolating knife switch can be disconnected from the elastic wiring seat, and the limiting spring can automatically slide the rotary connecting rod to the right, so that the limiting protrusion is engaged with the limiting groove, thereby ensuring the locking of the rotary connecting rod, and the operation is simple and convenient, saving time and effort.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

FIG1 is a schematic diagram of the structure of an intelligent outdoor high-voltage AC vacuum load switch proposed by the present invention;

FIG2 is a left view of the outdoor high voltage AC vacuum load switch provided by the present invention;

FIG3 is a schematic diagram of the structure of the elastic wiring seat proposed by the present invention;

FIG4 is a schematic structural diagram of a rotary switch device provided by the present invention;

FIG5 is a schematic diagram of the structure of the rotating seat proposed by the present invention;

In the figure: 1, fixed bracket; 2, fixed mounting seat; 3, lightning protection insulating column; 4, first insulating column; 5, elastic terminal seat; 51, insulating fixed seat; 52, inner insulating limit rod; 53, outer insulating limit rod; 54, contact seat; 55, insulating spring; 56, incoming line terminal seat; 6, isolating knife switch; 7, vacuum arc extinguishing chamber; 8, arc-starting rod; 9, rotating switch device; 91, rotating connecting rod; 92, rotating connecting seat; 93, rotating connecting hole; 94, rotating seat; 95, sleeve hole; 96, limiting groove; 97, limiting protrusion; 98, fixed limiting seat; 99, sliding limiting seat; 910, sliding connecting hole; 911, limiting spring; 912, rotating handle; 10, first rotating shaft; 11, insulating connecting rod; 12, second rotating shaft; 13, fuse mounting seat; 14, second insulating column; 15, high-voltage fuse; 16, outgoing line terminal seat; 17, third insulating column.

Implementation

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1-5, the present invention provides a technical solution:

An intelligent outdoor high-voltage AC vacuum load switch comprises a fixed bracket 1 and a fixed mounting seat 2, wherein the fixed mounting seat 2 is installed at the rear end of the fixed bracket 1 by welding, a lightning protection insulating column 3 is installed at the top end of the fixed bracket 1, a first insulating column 4 is installed at the front end of the top of the fixed bracket 1, an elastic wiring seat 5 is installed at the front end of the first insulating column 4, an isolating knife switch 6 is electrically connected to the front end of the elastic wiring seat 5 by contact, a vacuum arc extinguishing chamber 7 is arranged at the right side of the front end of the elastic wiring seat 5, the vacuum arc extinguishing chamber 7 is fixedly connected to the fixed bracket 1 through a connecting rod, an arc-starting rod 8 is installed on the left end of the vacuum arc extinguishing chamber 7 by rotation, and the other end of the arc-starting rod 8 is rotatably connected to the top of the isolating knife switch 6 through a first rotating shaft 10, and the fixed bracket 1 has a plurality of holes. A rotary switch device 9 is horizontally rotatably installed at the middle position of the rotary switch device 9, an insulating connecting rod 11 is rotatably installed at the middle position of the rotary switch device 9, the other end of the insulating connecting rod 11 is rotatably connected to the isolating knife switch 6, the bottom end of the isolating knife switch 6 is rotatably connected to the fuse mounting seat 13 through a second rotating shaft 12, a second insulating column 14 is installed at the rear end of the fuse mounting seat 13, the other end of the second insulating column 14 is fixedly connected to the front end surface of the fixed bracket 1, a high-voltage fuse 15 is electrically fixedly connected at the lower end of the fuse mounting seat 13, the other end of the high-voltage fuse 15 is electrically connected to the outlet terminal block 16, a third insulating column 17 is installed at the left end of the outlet terminal block 16, and the upper end of the third insulating column 17 is fixedly connected to the lower end surface of the fixed bracket 1.

Furthermore, the elastic terminal block 5 includes an insulating fixed seat 51, an inner insulating limit rod 52, an outer insulating limit rod 53, a contact seat 54, an insulating spring 55 and an incoming line terminal block 56. The inner insulating limit rod 52 is installed at the middle position of the right end surface of the insulating fixed seat 51, and the outer insulating limit rod 53 is connected to the right end position of the inner insulating limit rod 52 through a sliding sleeve. The other end of the outer insulating limit rod 53 is fixedly connected to the left end surface of the contact seat 54, and an insulating spring 55 is sleeved on the outer side of the inner insulating limit rod 52 and the outer insulating limit rod 53. One end of the insulating spring 55 It is fixedly connected to the right end face of the insulating fixing seat 51, and the other end of the insulating spring 55 is fixedly connected to the left end face of the contact seat 54. An incoming line terminal seat 56 is installed at the upper end of the contact seat 54, and the elastic terminal seat 5 is fixedly connected to the first insulating column 4 through the insulating fixing seat 51; the elastic terminal seat 5 can be effectively electrically connected to the isolating knife switch 6 through the setting, ensuring that during the long-term operation of the high-voltage AC vacuum load switch, there will be no poor contact between the isolating knife switch 6 and the incoming line terminal seat 56, and the stability of current transmission can be guaranteed.

Further, the rotary switch device 9 includes a rotary connecting rod 91, a rotary connecting seat 92, a rotary connecting hole 93, a rotary seat 94, a sleeve hole 95, a limiting groove 96, a limiting protrusion 97, a fixed limiting seat 98, a sliding limiting seat 99, a sliding connecting hole 910, a limiting spring 911 and a rotary handle 912. The rotary connecting seat 92 is installed at the middle position of the upper end of the rotary connecting rod 91, the rotary connecting hole 93 is provided at the middle position inside the rotary connecting seat 92, and the rotary seats 94 are sleeved at the left and right ends of the rotary connecting rod 91. A sleeve hole 95 is provided inside the rotating seat 94, and the rotating seat 94 is sleeved with the rotating connecting rod 91 through the sleeve hole 95. A limiting groove 96 is provided outside the sleeve hole 95. The limiting groove 96 is fixedly provided in the rotating seat 94. A limiting protrusion 97 is sleeved inside the limiting groove 96. The limiting protrusion 97 is fixedly installed on the outside of the rotating connecting rod 91. A fixed limiting seat 98 is provided on the left side of the rotating connecting seat 92. The fixed limiting seat 98 is fixedly connected to the rotating connecting rod 91. A sliding limiting seat 99 is provided on the left side of the fixed limiting seat 98. The limit seat 99 is provided with a sliding connection hole 910 inside, and the sliding limit seat 99 is sleeved with the rotating connecting rod 91 through the sliding connection hole 910. A limit spring 911 is provided between the fixed limit seat 98 and the sliding limit seat 99. The limit spring 911 is sleeved on the outside of the rotating connecting rod 91. A rotating handle 912 is installed at the left end of the rotating connecting rod 91. The rotating switch device 9 is fixedly connected to the fixed bracket 1 through the rotating seat 94; the rotating handle 912 can drive the rotating connecting rod 91 to rotate between the rotating seat 94 and the fixed bracket 1. The frame 1 slides and rotates left and right, and the rotating connecting rod 91 is driven to slide to the left by rotating the handle 912, so that the limiting protrusion 97 set on the outside of the rotating connecting rod 91 is disengaged from the limiting groove 96 set in the rotating seat 94, and then the rotating connecting rod 91 is driven to rotate by rotating the handle 912, so that the isolating knife switch 6 can be disconnected from the elastic wiring seat 5, and the rotating connecting rod 91 can automatically slide to the right through the limiting spring 911, so that the limiting protrusion 97 is engaged with the limiting groove 96, thereby ensuring the locking of the rotating connecting rod 91.

Furthermore, there are three lightning insulation columns 3 with the same size and specifications, and the lightning insulation columns 3 are evenly installed at the top position of the fixed bracket 1; by setting three lightning insulation columns 3 with the same size and specifications, effective lightning protection can be effectively provided for the high-voltage AC vacuum load switch when working outdoors.

Furthermore, three first insulating columns 4, three second insulating columns 14 and three third insulating columns 17 are provided, and they are the same in size and structure; by providing three first insulating columns 4, three second insulating columns 14 and three third insulating columns 17 of the same size and structure, effective insulation protection can be provided for the outdoor high-voltage AC vacuum load switch.

Furthermore, the rotary switch device 9 can drive the isolating switch 6 to rotate left and right relative to the second insulating column 14 through the insulating connecting rod 11; the circuit can be opened and closed by rotating the rotary switch device 9 left and right.

Furthermore, the diameter of the inner insulating limit rod 52 is smaller than the diameter of the outer insulating limit rod 53, and the contact seat 54 can move left and right relative to the insulating fixed seat 51 through the insulating spring 55; by setting the diameter of the inner insulating limit rod 52 to be smaller than the diameter of the outer insulating limit rod 53, it can be ensured that the inner insulating limit rod 52 can slide left and right inside the outer insulating limit rod 53.

Furthermore, the rotating connecting rod 91 can slide left and right in the rotating seat 94, and there are four limiting grooves 96 in total and they are symmetrically arranged at 90 degrees in the rotating seat 94. The left end rotating seat 94 is fixedly connected to the left end surface of the fixed bracket 1, and the right end rotating seat 94 is fixedly connected to the right end surface of the fixed bracket 1; by arranging four limiting grooves 96 symmetrically arranged at 90 degrees in the rotating seat 94, the rotation state of the rotating connecting rod 91 can be limited to prevent it from rotating during operation.

The working principle and use process of the present invention are as follows: before using the present invention, it should be subjected to necessary pre-use inspection. After the inspection is correct, the mounting seat 2 of the present invention is fixedly installed with the supporting device. Before wiring, the rotating connecting rod 91 is driven to slide to the left by turning the handle 912, so that the limiting protrusion 97 set on the outer side of the rotating connecting rod 91 is disengaged from the limiting groove 96 set in the rotating seat 94, and then the rotating connecting rod 91 is driven to rotate clockwise by turning the handle 912, and the rotating connecting seat 92 in the rotating switch device 9 drives the insulating connecting rod 11 to move to the right, thereby driving the isolating knife switch 6 to rotate to the right through the insulating connecting rod 11, disconnecting the isolating knife switch 6 from the elastic wiring seat 5, and the rotating connecting rod 91 can automatically slide to the right through the limiting spring 911, so that the limiting protrusion 97 on the outer side of the rotating connecting rod 91 is disengaged from the limiting groove 96 set in the rotating seat 94. The limiting groove 96 in the horizontal position of the movable seat 94 is engaged to ensure the locking of the rotating connecting rod 91, and then the incoming line end of the power grid is electrically connected through the incoming line terminal 56 in the elastic terminal seat 5, and the outgoing line end is electrically connected to the outgoing line terminal 16. After the connection is completed, the rotating connecting rod 91 is driven to slide to the left by rotating the handle 912, and then the rotating connecting rod 91 is driven to rotate counterclockwise by rotating the handle 912 to connect the isolation knife switch 6 with the elastic terminal seat 5. The arc-starting rod 8 provided can introduce the arc generated at the connection between the isolation knife switch 6 and the elastic terminal seat 5 into the vacuum arc extinguishing chamber 7 for arc extinguishing, thereby preventing the components in the high-voltage AC composite switch from being burned due to the arc. The high-voltage fuse 15 provided can be melted when a short circuit occurs in the circuit, automatically disconnecting the circuit to protect other components of the circuit from being burned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. An intelligent outdoor high-voltage AC vacuum load switch, comprising a fixed support (1) and a fixed mounting seat (2), characterized in that: the fixed mounting seat (2) is mounted at the rear end of the fixed support (1) by welding, a lightning protection insulating column (3) is mounted at the top end of the fixed support (1), a first insulating column (4) is mounted at the front end of the top of the fixed support (1), an elastic wiring seat (5) is mounted at the front end of the first insulating column (4), the front end of the elastic wiring seat (5) is electrically connected to an isolating knife switch (6) through contact, a vacuum arc extinguishing chamber (7) is arranged at the right side of the front end of the elastic wiring seat (5), the vacuum arc extinguishing chamber (7) is fixedly connected to the fixed support (1) through a connecting rod, an arc-starting rod (8) is rotatably mounted on the left end of the vacuum arc extinguishing chamber (7), the other end of the arc-starting rod (8) is rotatably connected to the top of the isolating knife switch (6) through a first rotating shaft (10), and the fixed support (1) is provided with a fixed mounting seat (2) at the rear end of the fixed support (1), and a lightning protection insulating column (3) is mounted at the top end of the fixed support (1), and a first insulating column (4) is mounted at the front end of the first insulating column (4), and an elastic wiring seat (5) is mounted at the front end of the first insulating column (4), and an isolating knife switch (6) is electrically connected to the front end of the elastic wiring seat (5) through contact, and a vacuum arc extinguishing chamber (7) is arranged at the right side of the front end of the elastic wiring seat (5), the vacuum arc extinguishing chamber (7) is fixedly connected to the fixed support (1) through a connecting rod, an arc-starting rod (8) is rotatably mounted on the left end of the vacuum arc extinguishing chamber (7), and the other end of the arc-starting rod (8) is rotatably connected to the top of the isolating knife switch ( A rotary switch device (9) is horizontally rotatably installed at the middle position inside the fixed bracket (1), an insulating connecting rod (11) is rotatably installed at the middle position of the rotary switch device (9), the other end of the insulating connecting rod (11) is rotatably connected to the isolating knife switch (6), the bottom end of the isolating knife switch (6) is rotatably connected to a fuse mounting seat (13) via a second rotating shaft (12), a second insulating column (14) is installed at the rear end of the fuse mounting seat (13), the other end of the second insulating column (14) is fixedly connected to the front end surface of the fixed bracket (1), a high-voltage fuse (15) is electrically fixedly connected at the lower end of the fuse mounting seat (13), the other end of the high-voltage fuse (15) is electrically connected to an outlet wiring seat (16), a third insulating column (17) is installed at the left end of the outlet wiring seat (16), the upper end of the third insulating column (17) is fixedly connected to the lower end surface of the fixed bracket (1); The elastic wiring seat (5) comprises an insulating fixing seat (51), an inner insulating limiting rod (52), an outer insulating limiting rod (53), a contact seat (54), an insulating spring (55) and an incoming wiring seat (56); an inner insulating limiting rod (52) is installed at the middle position of the right end surface of the insulating fixing seat (51); an outer insulating limiting rod (53) is connected to the right end of the inner insulating limiting rod (52) through a sliding sleeve; the other end of the outer insulating limiting rod (53) is connected to the left end of the contact seat (54). The inner insulating limit rod (52) and the outer insulating limit rod (53) are fixedly connected to each other, an insulating spring (55) is sleeved on the outside of the inner insulating limit rod (52) and the outer insulating limit rod (53), one end of the insulating spring (55) is fixedly connected to the right end surface of the insulating fixing seat (51), and the other end of the insulating spring (55) is fixedly connected to the left end surface of the contact seat (54), an incoming wire connection seat (56) is installed at the upper end of the contact seat (54), and the elastic wire connection seat (5) is fixedly connected to the first insulating column (4) through the insulating fixing seat (51); The rotary switch device (9) comprises a rotary connecting rod (91), a rotary connecting seat (92), a rotary connecting hole (93), a rotating seat (94), a sleeve hole (95), a limiting groove (96), a limiting protrusion (97), a fixed limiting seat (98), a sliding limiting seat (99), a sliding connecting hole (910), a limiting spring (911) and a rotary handle (912). The rotary connecting seat (92) is installed at the middle position of the upper end of the rotary connecting rod (91). The rotary connecting hole (93) is provided at the middle position inside the rotary connecting seat (92). The rotary connecting rod (91) is sleeved with the rotary seat (94) at the left and right ends. The rotating seat (94) is provided with a sleeve hole (95). The rotary seat (94) is sleeved with the rotary connecting rod (91) through the sleeve hole (95). The outer side of the sleeve hole (95) is provided with a limiting groove (96). The limiting groove (96) is fixedly provided on the rotating seat (94). A limiting protrusion (97) is sleeved inside the limiting groove (96), and the limiting protrusion (97) is fixedly mounted on the outside of the rotating connecting rod (91). A fixed limiting seat (98) is arranged on the left side of the rotating connecting seat (92), and the fixed limiting seat (98) is fixedly connected to the rotating connecting rod (91). A sliding limiting seat (99) is arranged on the left side of the fixed limiting seat (98), and a sliding connection hole (910) is arranged inside the sliding limiting seat (99). The sliding limiting seat (99) is sleeved with the rotating connecting rod (91) through the sliding connection hole (910). A limiting spring (911) is arranged between the fixed limiting seat (98) and the sliding limiting seat (99), and the limiting spring (911) is sleeved on the outside of the rotating connecting rod (91). A rotating handle (912) is installed at the left end of the rotating connecting rod (91), and the rotating switch device (9) is fixedly connected to the fixed bracket (1) through the rotating seat (94). 2. An intelligent outdoor high-voltage AC vacuum load switch according to claim 1, characterized in that: the lightning protection insulation columns (3) are provided with three in total and have the same size and specifications, and the lightning protection insulation columns (3) are evenly installed at the top position of the fixed bracket (1). 3. An intelligent outdoor high-voltage AC vacuum load switch according to claim 1, characterized in that: the first insulating column (4), the second insulating column (14) and the third insulating column (17) are each provided with three and their sizes and structures are the same. 4. An intelligent outdoor high-voltage AC vacuum load switch according to claim 1, characterized in that: the rotary switch device (9) can drive the isolation knife switch (6) to rotate left and right relative to the second insulating column (14) through the insulating connecting rod (11). 5. The intelligent outdoor high-voltage AC vacuum load switch according to claim 1 is characterized in that the diameter of the inner insulating limit rod (52) is smaller than the diameter of the outer insulating limit rod (53), and the contact seat (54) can move left and right relative to the insulating fixed seat (51) through the insulating spring (55). 6. An intelligent outdoor high-voltage AC vacuum load switch according to claim 1, characterized in that: the rotating connecting rod (91) can slide left and right in the rotating seat (94), a total of four limiting grooves (96) are provided and are symmetrically arranged in the rotating seat (94) at ninety degrees, the rotating seat (94) at the left end is fixedly connected to the left end surface of the fixed bracket (1), and the rotating seat (94) at the right end is fixedly connected to the right end surface of the fixed bracket (1).