Duplex rotary isolating switch with free tripping function

Abstract

The utility model belongs to the technical field of rotary disconnecting switches, and particularly relates to a duplex rotary disconnecting switch with a free tripping function, which comprises a knob, a power mechanism and a switch main body which are stacked along a first direction, the switch body comprises a first contact assembly arranged along a central shaft A and a second contact assembly arranged along a central shaft B. A first linkage structure is arranged to enable the first contact assembly and the second contact assembly to form a two-wire switch structure, and a power mechanism with a free tripping function is matched to realize synchronous opening and closing operation of the two-wire switch structure through knob operation. And the duplex switch structure is freely tripped and opened, so that the requirement that more contact assemblies are needed to realize circuit control can be met, the overall length can be reduced, and the overall space of electric equipment can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary isolating switches, and in particular relates to a double rotary isolating switch with a free tripping function. Background Art

[0002] Switches are widely used in power supply circuits. By controlling the opening and closing of switches, the circuits are turned on and off. As the functions of power supply circuits increase, the safety requirements are also increasing. During use, emergency situations often occur where the circuit needs to be cut off. For example, in the case of circuit failure, the switch needs to be manually operated to cut off the power. If the switch cannot be operated in time to cut off the power, it will bring safety hazards.

[0003] Patent CN202111212394.3 discloses a switch, including a contact assembly stacked along a first direction, a free tripping structure and a knob, wherein the tripper of the free tripping structure is used to trip with a tripping member after receiving a tripping signal, and the tripping member drives the connecting rod structure to move so as to separate the moving contact and the static contact. The switch structure is provided with a free tripping structure in the rotary switch, so that the switch does not need to be manually operated when a circuit fails, and the power supply system can automatically drive the switch to trip, thereby improving the safety of the power supply circuit. The applicant's prior patent CN202310489972.0 discloses a freely trippable rotary switch, including a housing, an operating mechanism, a second rotating shaft, a second energy storage element, and a driving mechanism, wherein a matching structure is provided between the second rotating shaft and the operating mechanism, and the matching structure has an operating state in which the second rotating shaft forms a linkage relationship with the operating mechanism and a free tripping state in which the second rotating shaft and the operating mechanism are released from the linkage relationship, and the matching structure is in a free tripping state when and only when the second rotating shaft is in a closed position and the operating mechanism is in the process of switching from a closed state to an open state. The utility model is based on the existing structure that can be quickly released, so that the second rotating shaft driven by the knob and the operating mechanism are separated and a matching structure is arranged between the two. The second rotating shaft can drive the switch state of the operating mechanism to change by rotating through the matching structure, and when the operating mechanism is separated from the second rotating shaft driven by the knob under the energy release action of the second energy storage element, the purpose of free movement of the operating mechanism is achieved.

[0004] The above structure superimposes a power mechanism with a free tripping function between the switch body formed by the knob and a plurality of stacked groups of contact assemblies to achieve the free tripping and opening of the rotary isolating switch. When the number of contact assemblies is large, the overall length of the switch using the power mechanism with a free tripping function is long, which may easily lead to poor contact synchronization of the contacts, a large space required for installation, and a high possibility of breakage in the middle during transportation. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a double rotary isolating switch with a free tripping function.

[0006] The technical solution adopted by the utility model is as follows: a double rotary isolating switch with a free tripping function, comprising a knob, a power mechanism and a switch body stacked along a first direction;

[0007] The power mechanism has a closing state, an opening state and a free tripping state, and the power mechanism can be switched between the closing state and the opening state by a knob; the power mechanism includes a release device for receiving an opening signal to realize the switching of the power mechanism from the closing state to the free tripping state;

[0008] The switch body comprises a switch housing and a plurality of groups of contact assemblies arranged in the switch housing, each group of contact assemblies comprises a matching fixed part and a movable part, the movable part is rotatably connected to the fixed part, the fixed part is provided with a static contact, and the movable part is provided with a moving contact, including at least one group of first contact assemblies and at least one group of second contact assemblies, the movable part of the first contact assembly has a central axis A, the movable part of the second contact assembly has a central axis B, the central axis A and the central axis B are not colinear and both extend in a first direction, the movable part of the first contact assembly can rotate about the central axis A to close or open its moving contact and its static contact, and the movable part of the second contact assembly can rotate about the central axis B to close or open its moving contact and its static contact;

[0009] A first transmission structure is provided between the movable part of the first contact assembly and the movable part of the second contact assembly to realize synchronous rotation of the movable part of the first contact assembly and the movable part of the second contact assembly;

[0010] The movable part of the first contact assembly and / or the movable part of the second contact assembly is connected to the power mechanism so that it rotates around its central axis under the drive of the power mechanism. When the power mechanism is in a closed state, the movable contact and the static contact are closed. When the power mechanism is in an open state or a free tripping state, the movable contact and the static contact are open.

[0011] The power mechanism includes a rotary input member, a rotary output member and a free-release transmission structure, wherein the rotary input member is used to fix the knob, and the rotary output member is used to connect the movable part of the first contact assembly and / or the movable part of the second contact assembly, the rotation center of the rotary input member is the first axis, and the rotation center of the rotary output member is the second axis, and both the first axis and the second axis extend along the first direction.

[0012] The second axis is colinear with the central axis A or the central axis B, and the rotary output member is directly connected with the movable part of the first contact assembly or the movable part of the second contact assembly to form a circumferential linkage fit.

[0013] The first transmission structure comprises a synchronous wheel arranged between the movable part of the first contact assembly or the movable part of the second contact assembly, the rotation center of the synchronous wheel is the third axis, the second axis is collinear with the third axis, and the rotation output member is directly connected to the synchronous wheel to form a circumferential linkage fit;

[0014] The first transmission structure includes a second transmission structure arranged between the synchronous wheel and the movable part of the first contact assembly and a third transmission structure between the synchronous wheel and the movable part of the second contact assembly, so that the rotation of the synchronous wheel can synchronously drive the movable part of the first contact assembly and the movable part of the second contact assembly to rotate.

[0015] The switch housing comprises a plurality of unit housing members stacked in a first direction, one unit housing member is provided with two switch chambers, and the two switch chambers of one unit housing member are used to install a first contact assembly and a second contact assembly respectively;

[0016] The switch housing includes at least one first transmission structure limiting housing, the first transmission structure limiting housing is formed with a first transmission structure installation cavity, and the first transmission structure is installed in the first transmission structure installation cavity;

[0017] The first transmission structure limiting housing is located at one end, or both ends, or the middle, or one end and the middle, or both ends and the middle of the switch housing along the first direction.

[0018] There are at least two first transmission structure limiting housings, and the first transmission structure limiting housings are located at one end and the middle, or at both ends and the middle, of the switch housing along the first direction.

[0019] The first transmission structure includes a first transmission wheel sleeved on the movable part of the first contact assembly and a second transmission wheel sleeved on the movable part of the second contact assembly, and at least one set of transmission pairs is provided between the first transmission wheel and the second transmission wheel, and the transmission pairs are one or more of gear transmission, chain sprocket transmission, gear rack transmission, and connecting rod transmission.

[0020] The free tripping transmission structure comprises a jumper, a connecting rod structure with a first energy storage element, and the connecting rod structure comprises an arc motion input end and a rotation motion output end;

[0021] A fourth transmission structure is provided between the rotation input member and the arc motion input end, so that the rotational motion of the rotation input member drives the arc motion of the arc motion input end; the connecting rod structure has a closed state in which the first energy storage element stores energy and an open state in which the first energy storage element releases energy;

[0022] The rotational motion output end constitutes a rotational output member;

[0023] The tripping member cooperates with the release, and when the release receives a tripping signal, the tripping member is driven to trip the connecting rod structure, so that the first energy storage element of the connecting rod structure releases energy, so that the moving contact is separated from the static contact.

[0024] The free tripping transmission structure comprises an operating mechanism and a first energy storage element;

[0025] The operating mechanism has an open state and a closed state, and comprises a stopper, a rotating shaft, a second energy storage element, and an operating rotating seat which are coaxially arranged in sequence;

[0026] The first energy storage element has an energy storage state and an energy release state. In the energy storage state, the rotating input member can rotate to drive the operating mechanism to switch between the open state and the closed state, and the first energy storage element maintains the energy storage state. When the first energy storage element changes from the energy storage state to the energy release state, the first energy storage element can drive the operating mechanism in the closed state to switch to the energy storage state.

[0027] The first energy storage element in the energy storage state can be transformed into the energy release state by the release device;

[0028] A matching structure is provided between the rotary input member and the operating mechanism, and the matching structure has an operating state in which the rotary input member and the operating mechanism form a linkage relationship, and a free tripping state in which the rotary input member and the operating mechanism are released from the linkage relationship. When the rotary input member is in the closing position and the operating mechanism is in the process of switching from the closing state to the opening state, the matching structure switches to the free tripping state.

[0029] The beneficial effects of the utility model are as follows: the utility model is provided with a first contact assembly arranged along the central axis A and a second contact assembly arranged along the central axis B, and a first linkage structure is arranged so that the first contact assembly and the second contact assembly form a double switch structure, and then cooperate with a power mechanism with a free tripping function to realize the synchronous opening and closing operation of the double switch structure operated by the knob, and the free tripping and opening of the double switch structure, which can solve the need for more contact assemblies to realize circuit control, and can reduce the overall length and improve transportation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0031] Figure 1This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0032] Figure 2 It is a cross-sectional view of Example 1 of the utility model;

[0033] Figure 3 This is a schematic structural diagram of a unit housing member in Embodiment 1 of the present utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the switch body in Embodiment 1 of the present utility model;

[0035] Figure 5 It is a structural schematic diagram of a connecting rod structure with an energy storage element in a free tripping transmission structure in Example 1 of the utility model;

[0036] Figure 6 It is a structural schematic diagram of the fourth transmission structure in the free tripping transmission structure in Example 1 of the utility model;

[0037] Figure 7 This is a schematic diagram of the structure of the switch body in Embodiment 2 of the present utility model;

[0038] Figure 8 A schematic structural diagram of the free tripping transmission structure in Example 3 of the utility model.

[0039] In the figure,

[0040] Knob - 100;

[0041] Power mechanism 200, rotating input member 210, rotating output member 220, tripping member 230, first energy storage element 240, arc motion input end 250, sector wheel 260, operating mechanism 270, release 280;

[0042] Switch body 300, switch housing 310, first contact assembly 320, second contact assembly 330, switch chamber 340, first transmission structure limit housing 350, synchronous wheel 360, first transmission wheel 370; second transmission wheel 380. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0044] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0045] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0046] Embodiment 1:

[0047] A double rotary isolating switch with a free tripping function comprises a knob 100, a power mechanism 200 and a switch body 300 stacked in a first direction;

[0048] The power mechanism 200 has a closing state, an opening state and a free tripping state. The power mechanism 200 can be switched between the closing state and the opening state by means of a knob 100. The power mechanism 200 includes a tripper 280 for receiving an opening signal to switch the power mechanism 200 from the closing state to the free tripping state.

[0049] The switch body 300 includes a switch housing 310 and a plurality of contact assemblies arranged in the switch housing 310, each of which includes a matching fixed portion and a movable portion, the movable portion is rotatably connected to the fixed portion, the fixed portion is provided with a static contact, and the movable portion is provided with a moving contact, including at least one group of first contact assemblies 320 and at least one group of second contact assemblies 330, the movable portion of the first contact assembly 320 has a central axis A, the movable portion of the second contact assembly 330 has a central axis B, the central axis A and the central axis B both extend in a first direction, the movable portion of the first contact assembly 320 can rotate about the central axis A to close or open its moving contact and its static contact, and the movable portion of the second contact assembly 330 can rotate about the central axis B to close or open its moving contact and its static contact;

[0050] A first transmission structure is provided between the movable part of the first contact assembly 320 and the movable part of the second contact assembly 330 to achieve synchronous rotation of the movable part of the first contact assembly 320 and the movable part of the second contact assembly 330;

[0051] The movable part of the first contact assembly 320 and / or the movable part of the second contact assembly 330 is connected to the power mechanism 200 so that it rotates around its central axis under the drive of the power mechanism 200. When the power mechanism 200 is in the closed state, the moving contact and the static contact are closed. When the power mechanism 200 is in the open state or the free tripping state, the moving contact and the static contact are open. The power mechanism 200 can be switched between the closed state and the open state by the knob 100.

[0052] Specifically, the power mechanism 200 includes a rotary input member 210, a rotary output member 220 and a free-release transmission structure, wherein the rotary input member 210 is used to fix the knob 100, and the rotary output member 220 is used to connect the movable part of the first contact assembly 320 and / or the movable part of the second contact assembly 330, the rotation center of the rotary input member 210 is the first axis, and the rotation center of the rotary output member 220 is the second axis, and both the first axis and the second axis extend along the first direction.

[0053] The second axis is colinear with the central axis A or the central axis B, and the rotary output member 220 is directly connected with the movable portion of the first contact assembly 320 or the movable portion of the second contact assembly 330 to form a circumferential linkage. That is, in this embodiment, the rotary output member 220 directly drives the movable portion of the first contact assembly 320 or the movable portion of the second contact assembly 330 to rotate, and correspondingly, the movable portion of the second contact assembly 330 or the movable portion of the first contact assembly 320 is driven by the first transmission structure to rotate accordingly.

[0054] The switch housing 310 includes a plurality of unit housing members stacked along a first direction, such as Figure 3 As shown, two switch chambers 340 are provided in one unit housing member, and the two switch chambers 340 of one unit housing member are used to install the first contact assembly 320 and the second contact assembly 330 respectively.

[0055] like Figure 4 As shown, the first transmission structure includes a first transmission wheel 370 sleeved on the movable part of the first contact assembly 320 and a second transmission wheel 380 sleeved on the movable part of the second contact assembly 330, and at least one transmission pair is provided between the first transmission wheel 370 and the second transmission wheel 380, and the transmission pair is one or more of gear transmission, chain sprocket transmission, gear rack transmission, and connecting rod transmission. In the figure, gear rack transmission is specifically used, and those skilled in the art can also think of using other transmission forms.

[0056] The first transmission structure may be disposed at both ends and / or the middle of the switch housing 310. Specifically, the first transmission structure may be one of the following three methods or a combination of two or more thereof:

[0057] a. The first transmission structure is arranged at one end of the switch housing 310 close to the power mechanism 200. Specifically, the switch housing includes a first transmission structure limiting housing 350 located at one end of the switch housing 310 close to the power mechanism 200. The first transmission structure limiting housing is formed with a first transmission structure installation cavity on the outer end surface away from the unit housing member. The first transmission structure is installed in the first transmission structure installation cavity. The first transmission structure is limited between the first transmission structure limiting housing 350 and the power mechanism 200, or a cover body is configured to limit the first transmission structure between the first transmission structure limiting housing 350 and the cover body;

[0058] b. The first transmission structure is arranged at one end of the switch housing 310 away from the power mechanism 200. Specifically, the switch housing includes a first transmission structure limiting housing 350 located at one end of the switch housing 310 away from the power mechanism 200. The outer end surface of the first transmission structure limiting housing away from the unit housing member is formed with a first transmission structure installation cavity, and a cover body is configured to limit the first transmission structure between the first transmission structure limiting housing 350 and the cover body;

[0059] c. The first transmission structure is arranged in the middle of the switch housing 310. Specifically, a first transmission structure limiting housing 350 is superimposed between at least one group of adjacent unit housing parts located in the middle of the switch housing along the first direction. A first transmission structure installation cavity is formed in the first transmission structure limiting housing 350. The first transmission structure is limited between the first transmission structure limiting housing 350 and the unit housing parts adjacent thereto.

[0060] More than two groups of first transmission structures can be provided to improve the stability and reliability of the transmission.

[0061] In this embodiment, if Figure 5 As shown, the free tripping transmission structure includes a jumper 230, a connecting rod structure with a first energy storage element 240, and the connecting rod structure includes an arc motion input end 250 and a rotation motion output end;

[0062] A fourth transmission structure is provided between the rotation input member 210 and the arc motion input end 250, so that the rotational motion of the rotation input member 210 drives the arc motion of the arc motion input end 250; the connecting rod structure has a closed state in which the first energy storage element 240 stores energy and an open state in which the first energy storage element 240 releases energy;

[0063] The rotational motion output end constitutes a rotational output member 220;

[0064] The tripping member 230 cooperates with the tripping device 280. When the tripping device 280 receives a tripping signal, the tripping member is driven to trip the connecting rod structure, so that the energy storage element of the connecting rod structure releases energy, so that the moving contact is separated from the static contact. The specific structure of the connecting rod structure with the energy storage element 240 can refer to the disclosure of Chinese patent CN202111212394.3.

[0065] The structure of the fourth transmission structure is as follows Figure 6 As shown, the rotation input member 210 is provided with a sector wheel 260 that rotates therewith, and the arc motion input end 250 is connected to the sector wheel 260 .

[0066] Embodiment 2:

[0067] The structure of this embodiment is substantially the same as that of the first embodiment, except that the structure of the first transmission structure is slightly different: Figure 7 As shown, the first transmission structure includes a synchronous wheel 360 disposed between the movable part of the first contact assembly 320 or the movable part of the second contact assembly 330, the rotation center of the synchronous wheel 360 is the third axis, the second axis and the third axis are colinear, and the rotation output member 220 is directly connected to the synchronous wheel 360 to form a circumferential linkage;

[0068] The first transmission structure includes a second transmission structure arranged between the synchronous wheel 360 and the movable part of the first contact assembly 320 and a third transmission structure between the synchronous wheel 360 and the movable part of the second contact assembly 330, so that the rotation of the synchronous wheel 360 can synchronously drive the movable part of the first contact assembly 320 and the movable part of the second contact assembly 330 to rotate.

[0069] Specifically, the first transmission structure includes a first transmission wheel 370 mounted on the movable part of the first contact assembly 320 and a second transmission wheel 380 mounted on the movable part of the second contact assembly 330. The synchronous wheel 360 is arranged between the first transmission wheel 370 and the second transmission wheel 380. All three are gears and the first transmission wheel 370 and the synchronous wheel 360 are meshed, and the second transmission wheel 380 and the synchronous wheel 360 are meshed.

[0070] The above-mentioned first transmission structure can also be arranged at both ends and / or the middle of the switch housing 310. If the first transmission structure is arranged at one end of the switch housing 310 close to the power mechanism 200, the synchronous wheel 360 is close to the power mechanism 200 and can be directly connected; if the first transmission structure is arranged at one end of the switch housing 310 away from the power mechanism 200 or is located in the middle of the switch housing 310, a unit housing member is superimposed between the synchronous wheel 360 and the power mechanism 200, and it is necessary to extend the rotation output member 220 and set space in the unit housing member for the extended rotation output member 220 to pass through.

[0071] Embodiment 3:

[0072] The structure of this embodiment is roughly the same as that of embodiment 1, except that the structure of the free tripping transmission structure is slightly different:

[0073] The free tripping transmission structure includes an operating mechanism 270 and a first energy storage element 240;

[0074] The operating mechanism 270 has an opening state and a closing state, and the operating mechanism 270 includes a stopper, a rotating shaft, a second energy storage element, and an operating rotating seat which are coaxially arranged in sequence;

[0075] The first energy storage element 240 has an energy storage state and an energy release state. In the energy storage state, the rotating input member can rotate to drive the operating mechanism 270 to switch between the open state and the closed state, and the first energy storage element 240 maintains the energy storage state. When the first energy storage element 240 is in the energy storage state and changes to the energy release state, the first energy storage element 240 can drive the operating mechanism 270 in the closed state to switch to the energy storage state.

[0076] The first energy storage element 240 in the energy storage state can be transformed into the energy release state by the release device;

[0077] A matching structure is provided between the rotating input member and the operating mechanism 270, and the matching structure has an operating state in which the rotating input member and the operating mechanism 270 form a linkage relationship, and a free tripping state in which the rotating input member and the operating mechanism 270 are released from the linkage relationship. When the rotating input member is in the closing position and the operating mechanism 270 is in the process of switching from the closing state to the opening state, the matching structure switches to the free tripping state.

[0078] The specific structure of the free-tripping transmission structure here can refer to the applicant's prior patent CN202310489972.0.

[0079] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A double rotary disconnector with free tripping function, characterized in that: It includes a knob, a power mechanism and a switch body stacked along a first direction; The power mechanism has a closing state, an opening state and a free tripping state, and the power mechanism can be switched between the closing state and the opening state by a knob; the power mechanism includes a release device for receiving an opening signal to realize the switching of the power mechanism from the closing state to the free tripping state; The switch body comprises a switch housing and a plurality of groups of contact assemblies arranged in the switch housing, each group of contact assemblies comprises a matching fixed part and a movable part, the movable part is rotatably connected to the fixed part, the fixed part is provided with a static contact, and the movable part is provided with a moving contact, including at least one group of first contact assemblies and at least one group of second contact assemblies, the movable part of the first contact assembly has a central axis A, the movable part of the second contact assembly has a central axis B, the central axis A and the central axis B are not colinear and both extend in a first direction, the movable part of the first contact assembly can rotate about the central axis A to close or open its moving contact and its static contact, and the movable part of the second contact assembly can rotate about the central axis B to close or open its moving contact and its static contact; A first transmission structure is provided between the movable part of the first contact assembly and the movable part of the second contact assembly to realize synchronous rotation of the movable part of the first contact assembly and the movable part of the second contact assembly; The movable part of the first contact assembly and / or the movable part of the second contact assembly is connected to the power mechanism so that it rotates around its central axis under the drive of the power mechanism. When the power mechanism is in a closed state, the movable contact and the static contact are closed. When the power mechanism is in an open state or a free tripping state, the movable contact and the static contact are open.

2. The double rotary disconnector with free tripping function according to claim 1 is characterized in that: The power mechanism includes a rotary input member, a rotary output member and a free-release transmission structure, wherein the rotary input member is used to fix the knob, and the rotary output member is used to connect the movable part of the first contact assembly and / or the movable part of the second contact assembly, the rotation center of the rotary input member is the first axis, and the rotation center of the rotary output member is the second axis, and both the first axis and the second axis extend along the first direction.

3. The double rotary disconnector with free tripping function according to claim 2 is characterized in that: The second axis is colinear with the central axis A or the central axis B, and the rotary output member is directly connected with the movable part of the first contact assembly or the movable part of the second contact assembly to form a circumferential linkage fit.

4. The double rotary disconnector with free tripping function according to claim 2 is characterized in that: The first transmission structure comprises a synchronous wheel arranged between the movable part of the first contact assembly or the movable part of the second contact assembly, the rotation center of the synchronous wheel is the third axis, the second axis is collinear with the third axis, and the rotation output member is directly connected to the synchronous wheel to form a circumferential linkage fit; The first transmission structure includes a second transmission structure arranged between the synchronous wheel and the movable part of the first contact assembly and a third transmission structure between the synchronous wheel and the movable part of the second contact assembly, so that the rotation of the synchronous wheel can synchronously drive the movable part of the first contact assembly and the movable part of the second contact assembly to rotate.

5. The double rotary disconnector with free tripping function according to any one of claims 1 to 4, characterized in that: The switch housing comprises a plurality of unit housing members stacked in a first direction, one unit housing member is provided with two switch chambers, and the two switch chambers of one unit housing member are used to install a first contact assembly and a second contact assembly respectively; The switch housing includes at least one first transmission structure limiting housing, the first transmission structure limiting housing is formed with a first transmission structure installation cavity, and the first transmission structure is installed in the first transmission structure installation cavity; The first transmission structure limiting housing is located at one end, or both ends, or the middle, or one end and the middle, or both ends and the middle of the switch housing along the first direction.

6. The double rotary disconnector with free tripping function according to claim 5, characterized in that: There are at least two first transmission structure limiting housings, and the first transmission structure limiting housings are located at one end and the middle, or at both ends and the middle, of the switch housing along the first direction.

7. The double rotary disconnector with free tripping function according to any one of claims 1 to 4, characterized in that: The first transmission structure includes a first transmission wheel sleeved on the movable part of the first contact assembly and a second transmission wheel sleeved on the movable part of the second contact assembly, and at least one set of transmission pairs is provided between the first transmission wheel and the second transmission wheel, and the transmission pairs are one or more of gear transmission, chain sprocket transmission, gear rack transmission, and connecting rod transmission.

8. The double rotary disconnector with free tripping function according to any one of claims 2 to 4, characterized in that: The free tripping transmission structure comprises a jumper, a connecting rod structure with a first energy storage element, and the connecting rod structure comprises an arc motion input end and a rotation motion output end; A fourth transmission structure is provided between the rotation input member and the arc motion input end, so that the rotational motion of the rotation input member drives the arc motion of the arc motion input end; the connecting rod structure has a closed state in which the first energy storage element stores energy and an open state in which the first energy storage element releases energy. The rotational motion output end constitutes a rotational output member; The tripping member cooperates with the release, and when the release receives a tripping signal, the tripping member is driven to be disengaged from the connecting rod structure, so that the energy storage element of the connecting rod structure releases energy, so that the moving contact is separated from the static contact.

9. The double rotary disconnector with free tripping function according to any one of claims 2 to 4, characterized in that: The free tripping transmission structure comprises an operating mechanism and a first energy storage element; The operating mechanism has an open state and a closed state, and comprises a stopper, a rotating shaft, a second energy storage element, and an operating rotating seat which are coaxially arranged in sequence; The first energy storage element has an energy storage state and an energy release state. In the energy storage state, the rotating input member can rotate to drive the operating mechanism to switch between the open state and the closed state, and the first energy storage element maintains the energy storage state. When the first energy storage element changes from the energy storage state to the energy release state, the first energy storage element can drive the operating mechanism in the closed state to switch to the energy storage state. The first energy storage element in the energy storage state can be transformed into the energy release state by the release device; A matching structure is provided between the rotary input member and the operating mechanism, and the matching structure has an operating state in which the rotary input member and the operating mechanism form a linkage relationship, and a free tripping state in which the rotary input member and the operating mechanism are released from the linkage relationship. When the rotary input member is in the closing position and the operating mechanism is in the process of switching from the closing state to the opening state, the matching structure switches to the free tripping state.

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