CN215680571U

CN215680571U - Contact system of isolating switch

Info

Publication number: CN215680571U
Application number: CN202023309252.2U
Authority: CN
Inventors: 黄谢军; 彭琼; 蒋武山; 全嘉青
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-01-28
Anticipated expiration: 2030-12-30

Abstract

A contact system of an isolation switch, characterized in that: the contact system comprises a first contact system and a second contact system, and the first contact system and the second contact system are connected by a linkage shaft, and a unit box Installed in the inner cavity of the casing, the outer wall of one side of the unit box and the inner wall of the corresponding side of the casing form a cavity 1, and the outer wall of the other side of the unit box and the inner wall of the corresponding other side of the casing form a cavity 2 , the unit box is provided with cavity 3, the cavity 1 and cavity 2 are located on both sides of the cavity 3, the linkage shaft is installed in the cavity 3, the contact system 1 and the contact system The two are respectively installed in the cavity one and the cavity two. The operating mechanism and contact system of the rotary switch are arranged in a horizontal direction, which increases the scope of application scenarios of the rotary switch, which not only reduces the volume of the switch product, but also reduces the cost of the product, and improves the reliability and safety of the switch. .

Description

Contact system of isolating switch

Technical Field

The utility model belongs to the technical field of switches, and particularly relates to a contact system of an isolating switch.

Background

The words switch are to be interpreted as open and closed. It refers to an element that can open a circuit, interrupt a current, or cause it to flow to other circuits. The most common switches are electromechanical devices that are operated by a person, in which there are one or several contacts. The "closed" of a contact indicates that the contact is conductive, allowing current to flow; an "open" of the switch indicates that the contact is not conductive, creating an open circuit, and not allowing current to flow. The development history of the switch is from the original knife switch needing manual operation to the intelligent switch applied to various large electrical control equipment, the functions of the switch are more and more, the safety is higher and more, and the isolating switch is low-voltage electrical equipment commonly used in a circuit and can change the on/off state through front operation or side operation.

Common isolator has translational motion formula isolator and rotation type isolator, common rotation type isolator includes an operating device and a plurality of contact module, wherein isolator's arc extinguishing effect is decided to contact module's structure, current rotation type isolator's appearance structure is the cuboid, contact module and the contact part of lower floor contact module movable contact subassembly and static contact subassembly on same side of adjacent upper and lower floor are arranged according to certain angle, but this kind of traditional rotation isolator who is upper and lower structure is suitable for the scene and has the limitation, meet the scene that needs horizontal direction installation and can't be suitable for or even can install and also lead to the operation inconvenient, the volume and the product cost of whole switch have not only been increased, isolator's reliability has been reduced simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that the conventional rotary isolating switch contact modules are arranged in the vertical direction and cannot realize a tripping function or the tripping function needs to be realized by additionally adding accessories, so that the volume and the product cost of the whole switch are increased, and the reliability of the isolating switch is reduced.

Technical scheme

In order to achieve the technical object, the utility model provides a contact system of a disconnecting switch, which is characterized in that: the contact system comprises a contact system I and a contact system II, the contact system I and the contact system II are connected through a linkage shaft, and the contact system I and the contact system II are driven by the linkage shaft to rotate in the shell to carry out switching-on and switching-off operations so as to realize the switching-on and switching-off of the isolating switch;

the unit box is arranged in the inner cavity of the shell, a first cavity is formed by the outer wall of one side of the unit box and the inner wall of one side corresponding to the shell, a second cavity is formed by the outer wall of the other side of the unit box and the inner wall of the other side corresponding to the shell, a third cavity is arranged in the unit box, the first cavity and the second cavity are arranged on two sides of the third cavity, the universal driving shaft is arranged in the third cavity, and the first contact system and the second contact system are respectively arranged in the first cavity and the second cavity.

Furthermore, the first contact system comprises a first contact support, a first moving contact is arranged in a first sliding groove hole on the first contact support and can slide back and forth in the first sliding groove hole, two ends of the first moving contact are positioned outside the first sliding groove hole, a first limiting hole and a second limiting hole are arranged on the first moving contact, and the first limiting shaft and the second limiting shaft penetrate through the first limiting hole and the second limiting hole and are then arranged on the first contact support.

Furthermore, a first linkage hole is formed in the first contact support, and one end of the linkage shaft penetrates through a first arc-shaped through hole in the left cover of the unit box and is arranged in the first linkage hole.

Further, the contact supports a mounting shaft I positioned in the cavity I and is rotatably mounted in the cavity I through the mounting shaft I.

Furthermore, the first limiting hole and the second limiting hole are waist-shaped limiting holes.

Furthermore, the second contact system comprises a second contact support, the second moving contact is arranged in a second sliding groove hole on the second contact support and can slide back and forth in the second sliding groove hole, two ends of the second moving contact are positioned outside the second sliding groove hole, the second moving contact is provided with a third limiting hole and a fourth limiting hole, and the third limiting shaft and the fourth limiting shaft penetrate through the third limiting hole and the fourth limiting hole and are then arranged on the second contact support.

Furthermore, a linkage hole II is formed in the contact support II, and the other end of the linkage shaft penetrates through an arc-shaped through hole II in the right cover of the unit box and is arranged in the linkage hole II.

Furthermore, the second contact support is positioned in a second mounting groove in the second cavity and is rotatably mounted in the second cavity through the second mounting shaft.

Furthermore, the third limiting hole and the fourth limiting hole are waist-shaped limiting holes.

Furthermore, a first moving contact in the contact system and a second moving contact in the contact system are arranged in a staggered mode.

Furthermore, two ends of the first moving contact are respectively provided with a first moving contact and a second moving contact, two ends of the second moving contact are respectively provided with a third moving contact and a fourth moving contact, two ends of the first moving contact respectively correspond to a first static contact component and a second static contact component which are installed in the first cavity, two ends of the second moving contact respectively correspond to a third static contact component and a fourth static contact component which are installed in the second cavity, the first static contact component comprises a first wiring board, the first static contact and the first static contact, the second static contact component comprises a second wiring board, a second static contact and a second static contact, the third static contact component comprises a third wiring board, a third static contact and a third static contact, and the fourth static contact comprises a fourth wiring board, a fourth static contact and a fourth static contact.

Further, the first wiring board and the first static contact are integrated, and the first static contact is arranged at the contact end of the first static contact;

the wiring board II and the fixed contact II are integrated, and the fixed contact II is arranged at the contact end of the fixed contact II;

the wiring board III and the fixed contact III are integrated, and the fixed contact III is arranged at the contact end of the fixed contact III;

the wiring board IV and the fixed contact IV are integrated, and the fixed contact IV is arranged at the contact end of the fixed contact IV.

Furthermore, the first wiring board, the first static contact, the second movable contact and the first movable contact are sequentially connected in series to form a branch A; the wiring board III, the static contact III, the moving contact III and the moving contact II are sequentially connected in series to form a branch B.

Furthermore, a first movable contact and a second fixed contact form a fracture M, a second movable contact and a first fixed contact form a fracture K, a third movable contact and a third fixed contact form a fracture Q, and a fourth movable contact and a fourth fixed contact form a fracture P.

Furthermore, when any one of the fracture M, the fracture K, the fracture Q and the fracture P completes the switching-on action, the first moving contact or the second moving contact can slide in the corresponding first sliding slot hole or the second sliding slot hole, so that the other corresponding fracture on the first moving contact or the second moving contact completes the switching-on action, and meanwhile, the linkage shaft continues to move to enable the remaining two fractures to complete the switching-on action.

Further, the arc extinguish chamber I is arranged in the cavity I and is positioned on a rotating track of the contact support.

Furthermore, the second arc extinguish chamber is installed in the second cavity and is positioned on the rotating track of the second contact support.

Further, the number of the first arc extinguishing chambers is 2.

Further, the number of the second arc extinguishing chambers is 2.

Further, still include operating device, operating device includes the handle pivot, handle pivot pivoted dress is on the unit box, annular connecting rod one end with the handle pivot is connected, and the other end dress is downthehole at the linkage spout of support one end, the support is installed through axle one can wind on the unit box one rotates, the support other end is through two rotatable linkage connecting rods that are equipped with of axle, the linkage connecting rod can wind two rotations of axle, linkage connecting rod one end is connected with reset spring, is equipped with the universal driving shaft in the linkage slotted hole of the other end.

Advantageous effects

According to the contact system of the isolating switch, the operating mechanism and the contact system of the rotary switch are arranged in the horizontal direction, the application scene range of the rotary isolating switch is enlarged, the size of a switch product is reduced, the product cost is reduced, and the reliability and the safety of the isolating switch are improved.

Drawings

Fig. 1 is a diagram of a product of an isolating switch in an embodiment of the utility model.

Fig. 2 is an exploded view of a disconnector according to an embodiment of the utility model.

Fig. 3 is an exploded view of the housing and the unit case according to the embodiment of the present invention.

FIG. 4 is a schematic diagram of a chamber layout according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of an operating mechanism in an embodiment of the present invention;

FIG. 6a is a schematic view of a contact support I or a contact support II according to an embodiment of the present invention;

FIG. 6b is a schematic diagram of one or two positions of a sliding slot hole in the embodiment of the present invention;

FIG. 7a is a schematic structural diagram of a moving contact I or a moving contact II in the embodiment of the utility model;

FIG. 7b is a schematic view of a first movable contact or a second movable contact according to an embodiment of the present invention;

FIG. 7c is a schematic view of a second installation of the moving contact I or the moving contact II in the embodiment of the utility model;

FIG. 8 is a schematic structural diagram of a branch A according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of the structure of branch B in the embodiment of the present invention;

FIG. 10 is a schematic view showing the installation position of branch A in the embodiment of the present invention;

FIG. 11 is a schematic view showing the installation position of branch B in the embodiment of the present invention;

FIG. 12 is a schematic view of the position of the operating mechanism in an embodiment of the present invention;

figure 13 is a schematic view of the mounting of a second contact system in an embodiment of the utility model;

FIG. 14 is a schematic view of linkage connecting rod and linkage shaft connection in an embodiment of the present invention;

FIG. 15a is a schematic diagram of the first position of the linkage link with the first contact support and the second contact support according to the embodiment of the present invention;

FIG. 15b is a schematic diagram of the second position of the linkage link with the first contact support and the second contact support according to the embodiment of the present invention;

FIG. 16 is a schematic diagram of the breakpoints in the embodiment of the present invention;

figure 17 is a schematic view of a contact system installation in accordance with an embodiment of the utility model;

FIG. 18 is a schematic view of an embodiment of the present invention within a cell box in an open state;

FIG. 19 is a schematic diagram of a unit box in a closing state according to an embodiment of the present invention;

FIG. 20a is a first schematic diagram of a four-bar linkage mechanism according to an embodiment of the present invention in an open state;

FIG. 20b is a schematic view of a second four-bar linkage mechanism in an open state according to the embodiment of the present invention;

fig. 21a is a schematic view of a four-bar linkage mechanism in a closing state according to an embodiment of the present invention;

fig. 21b is a schematic diagram of a four-bar linkage mechanism in a closing state according to the embodiment of the present invention;

fig. 22a is a schematic diagram of the first embodiment of the present invention in a tripped state.

Fig. 22b is a schematic diagram of the second embodiment of the present invention in a tripped state.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Examples

As shown in fig. 1,2, 3 and 4, an isolating switch comprises a shell 1 and a unit box 2, wherein the unit box 2 is arranged in an inner cavity of the shell 1, an outer wall of one side of the unit box 2 and an inner wall of one corresponding side of the shell 1 form a cavity a, an outer wall of the other side of the unit box 2 and an inner wall of the other corresponding side of the shell 1 form a cavity di, a cavity tri c is arranged in the unit box 2, the cavity a and the cavity di b are respectively arranged at two sides of the cavity tri c, an operating mechanism is arranged in the cavity tri c, a contact system 3 and an arc extinguish chamber 4 are arranged in the cavity a and the cavity di b, a handle assembly 5 comprises a handle 5a and a handle connecting rod 5b, and the handle connecting rod 5b penetrates through via holes in the shell 1 and the unit box 2 and is fixedly connected with a handle rotating shaft 8. As shown in fig. 18, the lock catch 7 is mounted on the operating mechanism in the cavity tri c. The handle assembly 5 drives the linkage shaft 6 through the operating mechanism to drive the contact system 3 to carry out switching-on and switching-off operation, so that the on-off of the isolating switch is realized.

More specifically, as shown in fig. 3 and 4, the unit box 2 includes a left unit box cover 201 and a right unit box cover 202, the housing 1 includes a left housing cover 101 and a right housing cover 102, the left unit box cover 201 and the right unit box cover 202 are assembled to form a cavity tri c, the left housing cover 101 and the left unit box cover 201 are assembled to form a cavity i, and the right housing cover 102 and the right unit box cover 202 are assembled to form a cavity di b.

As shown in fig. 5, 12 and 13, the operating mechanism includes a handle rotating shaft 8, the handle rotating shaft 8 is rotatably installed on the unit box 2, one end of an annular connecting rod 9 is connected with the handle rotating shaft 8, the other end of the annular connecting rod is installed in a linkage sliding slot hole 10a at one end of a support 10, the support 10 is installed on the unit box 2 through a first shaft 11 and can rotate around the first shaft 11, meanwhile, as shown in fig. 18 and 19, a linkage connecting rod 13 is rotatably installed at the other end of the support 10 through a second shaft 12, the linkage connecting rod 13 can rotate around the second shaft 12, and the linkage connecting rod 13 is in lap joint and matching with the first shaft 11 for limiting. One end of the linkage connecting rod 13 is connected with a return spring 14, and a linkage shaft 6 is arranged in a linkage groove hole 13a at the other end as shown in figure 14, in the embodiment, one end of the return spring 14 is connected to the linkage connecting rod 13, and the other end is arranged on the unit box 2.

As shown in fig. 18 and 19, the lock catch 7 is rotatably connected with the bracket 10 through a rotating shaft 15, the other end of the annular connecting rod 9 passes through the linkage slide slot hole 10a on the bracket 10 and then is in lap joint with the lock catch 7, and the traction rod 16 is installed on the unit box 2 corresponding to the lock catch 7.

As shown in fig. 2,6a, 6b,7a,7b, 7c and 17, the contact system 3 includes a contact system 3a and a contact system two 3b, the arc-extinguishing chamber 4 includes an arc-extinguishing chamber one 4a and an arc-extinguishing chamber two 4b, the contact system 3a and the arc-extinguishing chamber one 4a are installed in the cavity one a, and the contact system two 3b and the arc-extinguishing chamber two 4b are installed in the cavity two b. The first arc extinguishing chambers 4a are arranged in the first cavity a and located on a contact support 3a01 rotation track, and the number of the first arc extinguishing chambers 4a is 2. The second arc extinguishing chamber 4b is installed in the second cavity b and located on a rotating track of the second contact support 3b01, and the number of the second arc extinguishing chambers 4b is 2.

As further shown in fig. 6a, 6b,7a,7b and 7c, the contact system 3a includes a contact support-3 a01, the contact support-3 a01 is located in a mounting slot-a 1 in cavity-a as shown in fig. 10 and is rotatably mounted in cavity-a by a mounting shaft-a 2. The movable contact one 3a02 is arranged in a sliding slot one 3a0101 on the contact support one 3a01 and can slide back and forth in the sliding slot one 3a0101, two ends of the movable contact one 3a02 are located outside the sliding slot one 3a0101, a limiting hole one 3a0201 and a limiting hole two 3a0202 are arranged on the movable contact one 3a02, and the limiting shaft one 3a03 and the limiting shaft two 3a04 pass through the corresponding limiting hole one 3a0201 and the limiting hole two 3a0202 and are installed on the contact support one 3a 01. As shown in fig. 15a and 15b, the contact support one 3a01 is provided with a linkage hole one 3a0102, and one end of the linkage shaft 6 passes through an arc-shaped through hole one 201a shown in fig. 2 on the left cover 201 of the unit box and is arranged in the linkage hole one 3a 0102. In this embodiment, the first limiting hole 3a0201 and the second limiting hole 3a0202 are waist-shaped limiting holes.

As shown in fig. 6a, 6b,7a,7b and 7c, the second contact system 3b includes a second contact support 3b01, and the second contact support 3b01 is located in a second mounting slot 1 in the second cavity illustrated in fig. 11 and is rotatably mounted in the second cavity by a second mounting shaft 2. The movable contact two 3b02 is arranged in a sliding slot two 3b0101 on the contact support two 3b01 and can slide back and forth in the sliding slot two 3b0101, two ends of the movable contact two 3b02 are located outside the sliding slot two 3b0101, a limiting hole three 3b0201 and a limiting hole four 3b0202 are arranged on the movable contact two 3b02, and the limiting shaft three 3b03 and the limiting shaft four 3b04 penetrate through the corresponding limiting hole three 3b0201 and the limiting hole four 3b0202 and are installed on the contact support two 3b 01. As shown in fig. 15a and 15b, a linkage hole two 3b0102 is provided on the contact support two 3b01, and the other end of the linkage shaft 6 passes through an arc-shaped through hole two 202a shown in fig. 2 on the right cover 202 of the unit box and is installed in the linkage hole two 3b 0102. In this embodiment, the third limiting hole 3b0201 and the fourth limiting hole 3b0202 are waist-shaped limiting holes.

As shown in fig. 2 and 16, the movable contact one 3a02 and the movable contact two 3b02 are arranged in a staggered manner. As shown in fig. 8, 9,10 and 11, two ends of the moving contact one 3a02 are respectively provided with a moving contact one 3a0203 and a moving contact two 3a0204, two ends of the moving contact two 3b02 are respectively provided with a moving contact three 3b0203 and a moving contact four 3b0204, two ends of the moving contact one 3a02 are respectively corresponding to a fixed contact assembly one 3a05 and a fixed contact assembly two 3a06 which are arranged in the cavity one a, two ends of the moving contact two 3b02 are respectively corresponding to a fixed contact assembly three 3b05 and a fixed contact assembly four 3b06 which are arranged in the cavity two b, the fixed contact assembly one 3a05 comprises a wiring board one 3a0501, a fixed contact one 3a0502 and a fixed contact one 3a0503, the fixed contact assembly two 3a06 comprises a0601, a fixed contact two 3a0602 and a0603 b0503, the fixed contact assembly three 0503 b05 comprises a three 0503 b0503, the fixed contact assembly four 3b06 includes a terminal plate four 3b0601, a fixed contact four 3b0602 and a fixed contact four 3b 0603. In the embodiment, the first wiring board 3a0501 and the first static contact 3a0502 are integrated, and the first static contact 3a0503 is arranged at the contact end of the first static contact 3a 0502; the wiring board II 3a0601 and the static contact II 3a0602 are integrated, and the static contact II 3a0603 is arranged at the contact end of the static contact II 3a 0602; the wiring board III 3b0501 and the static contact III 3b0502 are integrated, and the static contact III 3b0503 is arranged at the contact end of the static contact III 3b 0502; the terminal plate four 3b0601 and the fixed contact four 3b0602 are integrated, and the fixed contact four 3b0603 is arranged at the contact end of the fixed contact four 3b 0602.

As shown in fig. 8 and 10, the first terminal board 3a0501, the first fixed contact 3a0502, the first fixed contact 3a0503, the second movable contact 3a0204, the first movable contact 3a02, the first movable contact 3a0203, the second fixed contact 3a0603, the second fixed contact 3a0602 and the second terminal board 3a0601 are sequentially connected in series to form a branch a; as shown in fig. 9 and 11, a wiring board three 3B0501, a fixed contact three 3B0502, a fixed contact three 3B0503, a moving contact three 3B0203, a moving contact two 3B02, a moving contact four 3B0204, a fixed contact four 3B0603, a fixed contact four 3B0602 and a wiring board four 3B0601 are sequentially connected in series to form a branch circuit B.

As shown in fig. 8, 9,10, 11 and 16, the first moving contact 3a0203 forms a fracture M with the second fixed contact 3a0603, the second moving contact 3a0204 forms a fracture K with the first fixed contact 3a0503, the third moving contact 3b0203 forms a fracture Q with the third fixed contact 3b0503, and the fourth moving contact 3b0204 forms a fracture P with the fourth fixed contact 3b 0603. Generally speaking, due to machining errors and dimensional tolerances, when a circuit breaker is switched on, the moving contacts at two ends of the moving contact one 3a02 or the moving contact two 3b02 cannot be simultaneously contacted with corresponding fixed contacts, so in this embodiment, the moving contact one 3a02 or the moving contact two 3b02 can slide, when any one of the fracture M, the fracture K, the fracture Q and the fracture P completes a switching action, the moving contact one 3a02 or the moving contact two 3b02 can slide in the corresponding sliding slot one 3a0101 or the sliding slot two 3b0101 to ensure that the moving contact at the other end of the moving contact one 3a02 or the moving contact two 3b02 is contacted with the corresponding fixed contact to complete switching on of the other fracture, then the linkage shaft 6 continues to move in the linkage slot 13a, and the other end of the linkage shaft 6 drives the moving contact at the other end of the contact system to make the corresponding moving contact with the corresponding fixed contacts sequentially contact so as to complete switching on the remaining two fractures The gate is operated.

During closing, external force drive handle subassembly 5 drives manual pivot 8 rotates around rotation center O1, manual pivot 8 rotates, through with the tie point O2 of annular connecting rod 9 is right annular connecting rod 9 effect makes its motion, annular connecting rod 9 motion drives support 10 rotates around its self rotation center O3 and hasp 7 around its self rotation center O4, and after closing, thereby annular connecting rod 9 and hasp 7 auto-lock realize handle pivot 8, annular connecting rod 9, support 10 and the locking of the four-bar linkage that hasp 7 formed as shown in 19,21a and 21b of attached drawing. When tripping is performed, the traction rod 16 rotates around a rotation center O5 to push the latch 7 to push the push force F to rotate the latch 7 to release the locking of the latch 7 on the annular connecting rod 9, so as to unlock the four-bar linkage formed by the handle rotating shaft 8, the annular connecting rod 9, the bracket 10 and the latch 7, as shown in fig. 22 a. After the four-bar linkage mechanism is unlocked, under the action of a handle spring force, the handle rotating shaft 8 rotates around a rotating center O1 to drive the annular connecting rod 2 to move, meanwhile, under the action of a reset force f of a reset spring 14 shown in fig. 22b, the linkage connecting rod 13 is in lap joint rotation on the first shaft 11 and drives the support 10 to rotate around the first shaft 11 through the second shaft 12, the annular connecting rod 2 moves along a linkage sliding slot hole 10a in the support 10, and the process of releasing and unlocking is completed and is shown in fig. 20a, 20b,21a, 22a and 22 b.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A contact system for a disconnector, characterized in that: the contact system (3) comprises a contact system I (3a) and a contact system II (3b), the contact system I (3a) and the contact system II (3b) are connected through a linkage shaft (6), and the contact system I (3a) and the contact system II (3b) rotate in the shell (1) under the driving of the linkage shaft (6) to carry out switching-on and switching-off operations, so that the on-off of the isolating switch is realized;

unit box (2) dress is in casing (1) inner chamber, unit box (2) one side outer wall with casing (1) corresponding one side inner wall forms cavity (a), unit box (2) opposite side outer wall with casing (1) corresponding opposite side inner wall forms cavity two (b), establish cavity three (c) in unit box (2), cavity (a) and cavity two (b) divide and live in cavity three (c) both sides, universal driving shaft (6) dress is in cavity three (c), contact system (3a) and contact system two (3b) are adorned respectively in cavity one (a) and cavity two (b).

2. A contact system for a disconnector according to claim 1, characterized in that: the contact system (3a) comprises a contact support I (3a01), a movable contact I (3a02) is installed in a sliding slot I (3a0101) on the contact support I (3a01) and can slide back and forth in the sliding slot I (3a0101), two ends of the movable contact I (3a02) are located outside the sliding slot I (3a0101), a limiting hole I (3a0201) and a limiting hole II (3a0202) are arranged on the movable contact I (3a02), and a limiting shaft I (3a03) and a limiting shaft II (3a04) penetrate through the corresponding limiting hole I (3a0201) and the limiting hole II (3a0202) and are installed on the contact support I (3a 01);

a first linkage hole (3a0102) is formed in the first contact support (3a01), and one end of a linkage shaft (6) penetrates through a first arc-shaped through hole (201a) in the left cover (201) of the unit box and is arranged in the first linkage hole (3a 0102);

the contact support I (3a01) is positioned in a mounting groove I (a1) in the cavity I (a) and is rotatably mounted in the cavity I (a) through a mounting shaft I (a 2);

the first limiting hole (3a0201) and the second limiting hole (3a0202) are waist-shaped limiting holes.

3. A contact system for a disconnector according to claim 1, characterized in that: the second contact system (3b) comprises a second contact support (3b01), a second moving contact (3b02) is installed in a second sliding groove hole (3b0101) on the second contact support (3b01) and can slide back and forth in the second sliding groove hole (3b0101), two ends of the second moving contact (3b02) are located outside the second sliding groove hole (3b0101), a third limiting hole (3b0201) and a fourth limiting hole (3b0202) are arranged on the second moving contact (3b02), and the third limiting shaft (3b03) and the fourth limiting shaft (3b04) penetrate through the corresponding third limiting hole (3b0201) and the fourth limiting hole (3b0202) and are installed on the second contact support (3b 01);

a second linkage hole (3b0102) is formed in the second contact support (3b01), and the other end of the linkage shaft (6) penetrates through a second arc-shaped through hole (202a) in the right cover (202) of the unit box and is arranged in the second linkage hole (3b 0102);

the second contact support (3b01) is positioned in a second mounting groove (b1) in the second cavity (b) and is rotatably mounted in the second cavity (b) through a second mounting shaft (b 2);

the third limiting hole (3b0201) and the fourth limiting hole (3b0202) are waist-shaped limiting holes.

4. A contact system for a disconnector according to claim 1, characterized in that: the moving contact I (3a02) in the contact system I (3a) and the moving contact II (3b02) in the contact system II (3b) are arranged in a staggered mode;

the movable contact assembly comprises a first movable contact (3a02) and a second movable contact (3a0203) and a second movable contact (3a0204) which are respectively arranged at two ends of the first movable contact (3a02), a third movable contact (3b0203) and a fourth movable contact (3b0204) which are respectively arranged at two ends of the second movable contact (3b02), the two ends of the first movable contact (3a02) respectively correspond to a first fixed contact assembly (3a05) and a second fixed contact assembly (3a06) which are arranged in a first cavity (a), the two ends of the second movable contact (3b02) respectively correspond to a third fixed contact assembly (3b05) and a fourth fixed contact assembly (3b06) which are arranged in a second cavity (b), the first fixed contact assembly (3a0602) comprises a first fixed contact assembly (3a0501), the first fixed contact (0603 a0502) and the first fixed contact (3a0503), the second fixed contact assembly (3a06) comprises a second wiring board (3a0601), the second fixed contact assembly (0603 a0503) and the third fixed contact assembly (3b) comprise a0603), a static contact III (3b0502) and a static contact III (3b0503), wherein the static contact assembly IV (3b06) comprises a wiring board IV (3b0601), a static contact IV (3b0602) and a static contact IV (3b 0603);

the first wiring board (3a0501) and the first static contact (3a0502) are integrated, and the first static contact (3a0503) is arranged at the contact end of the first static contact (3a 0502);

the wiring board II (3a0601) and the static contact II (3a0602) are integrated, and the static contact II (3a0603) is arranged at the contact end of the static contact II (3a 0602);

the wiring board III (3b0501) and the static contact III (3b0502) are integrated, and the static contact III (3b0503) is arranged at the contact end of the static contact III (3b 0502);

the wiring board four (3b0601) and the static contact four (3b0602) are integrated, and the static contact four (3b0603) is arranged at the contact end of the static contact four (3b 0602);

the circuit board comprises a first wiring board (3a0501), a first fixed contact (3a0502), a first fixed contact (3a0503), a second movable contact (3a0204), a first movable contact (3a02), a first movable contact (3a0203), a second fixed contact (3a0603), a second fixed contact (3a0602) and a second wiring board (3a0601) which are sequentially connected in series to form a branch A; a wiring board III (3B0501), a fixed contact III (3B0502), a fixed contact III (3B0503), a moving contact III (3B0203), a moving contact II (3B02), a moving contact IV (3B0204), a fixed contact IV (3B0603), a fixed contact IV (3B0602) and a wiring board IV (3B0601) are sequentially connected in series to form a branch B.

5. A contact system of a disconnector according to claim 4, characterized in that: the movable contact I (3a0203) and the fixed contact II (3a0603) form a fracture (M), the movable contact II (3a0204) and the fixed contact I (3a0503) form a fracture (K), the movable contact III (3b0203) and the fixed contact III (3b0503) form a fracture (Q), and the movable contact IV (3b0204) and the fixed contact IV (3b0603) form a fracture (P);

when any one of the fracture (M), the fracture (K), the fracture (Q) and the fracture (P) completes the switching-on action, the movable contact I (3a02) or the movable contact II (3b02) can slide in the corresponding sliding slot I (3a0101) or the sliding slot II (3b0101) so as to enable the corresponding other fracture on the movable contact I (3a02) or the movable contact II (3b02) to complete the switching-on action, and meanwhile, the linkage shaft (6) continues to move so as to enable the remaining two fractures to complete the switching-on action.

6. A contact system for a disconnector according to claim 1, characterized in that: the arc extinguish chamber I (4a) is arranged in the cavity I (a) and is positioned on the rotating track of the contact support I (3a 01);

the arc extinguish chamber II (4b) is arranged in the cavity II (b) and is positioned on the rotating track of the contact support II (3b 01);

the number of the first arc extinguishing chambers (4a) is 2;

the number of the second arc-extinguishing chambers (4b) is 2.

7. A contact system for a disconnector according to claim 1, characterized in that: still include operating device, operating device includes handle pivot (8), handle pivot (8) pivoted dress is on unit box (2), annular connecting rod (9) one end with handle pivot (8) are connected, and the other end dress is in support (10) one end linkage sliding groove hole (10a), install support (10) through axle one (11) on unit box (2) and can wind axle one (11) rotate, support (10) other end is rotatable through axle two (12) and is equipped with linkage connecting rod (13), linkage connecting rod (13) can wind axle two (12) rotate, linkage connecting rod (13) one end is connected with reset spring (14), is equipped with universal driving shaft (6) in the linkage slotted hole (13a) of the other end.