Medium-voltage dual-power safe insulation protection mechanism

Abstract

The invention relates to a medium-voltage dual-power-supply safety insulation protection mechanism which comprises a first upper moving plate, a second upper moving plate, a first lower moving plate and a second lower moving plate. The first upper moving plate covers the position of an upper static contact group, the first lower moving plate covers the position of a lower static contact group, the second upper moving plate and the second lower moving plate form a middle moving plate, and the middle moving plate covers the position of a middle static contact group; the first upper moving plate and the second upper moving plate are both connected with an upper moving mechanism; the first lower moving plate and the second lower moving plate are both connected with a lower moving mechanism. The second upper moving plate and the second lower moving plate cover the position of the middle static contact set, protection and exposure of the middle static contacts can be automatically achieved, use safety of the middle static contacts is guaranteed, operation is convenient and fast, workers do not need to make direct contact with the middle moving plate, the automation degree is high, and the safety coefficient is high.

Description

Technical Field

[0001] The invention relates to a protection mechanism, in particular to a medium-voltage dual power supply safety insulation protection mechanism. Background Art

[0002] The existing medium-voltage dual power supply safety insulation protection mechanism only has movable protective doors on the upper static contact group and the lower static contact group, but the middle static contact group between the upper static contact group and the lower static contact group has no corresponding protective door, so that the middle static contact group is in an exposed state even when the power supply is not needed, which poses a risk of conduction of the middle static contact group and has poor safety. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a medium voltage dual power supply safety insulation protection mechanism.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a medium-voltage dual power supply safety insulation protection mechanism, comprising a first upper movable plate, a second upper movable plate, a first lower movable plate, and a second lower movable plate; the first upper movable plate covers the position of the upper static contact group, the first lower movable plate covers the position of the lower static contact group, the second upper movable plate and the second lower movable plate form a middle movable plate, and the middle movable plate covers the position of the middle static contact group;

[0005] The first upper movable plate is located at the upper part of the second upper movable plate, the first upper movable plate and the second upper movable plate are both connected to the upper movable mechanism, and the first upper movable plate and the second upper movable plate are both moved upward under the action of the upper movable mechanism; an upper spacing is left between the bottom end of the upper static contact group and the top end of the middle contact group, and the upper spacing matches the width of the second upper movable plate;

[0006] The first lower movable plate is located at the lower part of the second lower movable plate, and the first lower movable plate and the second lower movable plate are both connected to the lower movable mechanism, and the first lower movable plate and the second lower movable plate both move downward under the action of the lower movable mechanism; a lower spacing is left between the bottom end of the middle static contact group and the top end of the lower static contact group, and the lower spacing matches the width of the second lower movable plate.

[0007] In a preferred embodiment of the present invention, the first upper movable plate is connected to the first upper sleeve, the first lower movable plate is connected to the first lower sleeve, the second upper movable plate is connected to the second upper sleeve, and the second lower movable plate is connected to the second lower sleeve;

[0008] The upper moving mechanism connects the first upper sleeve and the second upper sleeve; the lower moving mechanism connects the first lower sleeve and the second lower sleeve.

[0009] In a preferred embodiment of the present invention, it also includes a support rod, and the first upper sleeve, the second upper sleeve, the first lower sleeve, and the second lower sleeve are respectively arranged on the support rod, and the first upper sleeve and the second upper sleeve are driven by the upper moving mechanism to move upward along the support rod, and the first lower sleeve and the second lower sleeve are driven by the lower moving mechanism to move downward along the support rod.

[0010] In a preferred embodiment of the present invention, the upper moving mechanism comprises an upper driving rod, a first upper moving rod, a first upper connecting rod, a second upper moving rod and a second upper connecting rod;

[0011] The upper driving rod is provided with one end of a first upper moving rod, the other end of the first upper moving rod is connected to a first upper connecting rod, the second upper moving rod is provided with an upper strip hole, the first upper connecting rod is connected to the first upper sleeve after passing through the upper strip hole, the second upper moving rod is provided with a second upper connecting rod, and the second upper connecting rod is connected to a second upper sleeve;

[0012] The first upper moving rod and the second upper moving rod are both vertically arranged, the upper strip hole is located at the upper part of the second upper connecting rod, and the second upper connecting rod is located at the lower part of the two upper connecting rods.

[0013] In a preferred embodiment of the present invention, the lower moving mechanism comprises a lower driving rod, a first lower moving rod, a first lower connecting rod, a second lower moving rod and a second lower connecting rod;

[0014] The lower driving rod is connected to one end of the first lower moving rod, the other end of the first lower moving rod is connected to the first lower connecting rod, the second lower moving rod is provided with a lower strip hole, the first lower connecting rod is connected to the first lower sleeve after passing through the lower strip hole, the second lower moving rod is provided with a second lower connecting rod, and the second lower connecting rod is connected to the second lower sleeve;

[0015] The first lower moving rod and the second lower moving rod are both vertically arranged, the lower strip-shaped hole is located at the lower part of the second lower connecting rod, and the second lower connecting rod is located at the upper part of the second lower connecting rod.

[0016] In a preferred embodiment of the present invention, the upper driving rod and the lower driving rod are cross-arranged to form an X shape, and a pin is provided at the intersection of the upper driving rod and the lower driving rod.

[0017] In a preferred embodiment of the present invention, the second upper movable plate comprises a first upper plate body and a second upper plate body, the second upper plate body is provided with a second upper pin shaft, the first upper plate body is correspondingly provided with a second pin shaft hole, and the second upper pin shaft is matchedly arranged in the second pin shaft hole;

[0018] The second lower movable plate includes a first lower plate body and a second lower plate body, the first lower plate body is provided with a first upper pin shaft, the second plate body is correspondingly provided with a first pin shaft hole, and the first upper pin shaft is matchedly arranged in the first pin shaft hole.

[0019] In a preferred embodiment of the present invention, a first upper guide groove is further provided on the first upper plate body, a first lower guide groove is provided on the second upper plate body, the first upper guide groove and the first lower guide groove are arranged opposite to each other, and the first upper guide groove and the first lower guide groove are connected, and a first lower pin is provided in the first upper guide groove;

[0020] The first lower plate body is also provided with a second upper guide groove, the second lower plate body is provided with a second lower guide groove, the second upper guide groove and the second lower guide groove are arranged opposite to each other, and the second lower guide groove and the second lower guide groove are connected, and a second lower pin shaft is provided in the second lower guide groove.

[0021] The beneficial effects of the present invention are as follows: the upper static contact group and the lower static contact group are protected respectively by the first upper movable plate and the first lower movable plate, and then the middle movable plate is formed by the second upper movable plate and the second lower movable plate, and the middle movable plate is covered at the position of the middle static contact group to protect the middle static contact group. When there is no need to connect the circuit, the middle static contact is always in a protective state to avoid exposure of the middle static contact, and effectively avoid the safety hazard caused by exposure of the middle static contact; when it is necessary to connect the circuit, the second upper movable plate and the first upper movable plate are moved up, and the second lower movable plate and the first lower movable plate are moved down to expose the middle static contact group, which is convenient for circuit connection; the protective mechanism of the present invention can automatically protect and expose the middle static contact, ensure the safety of the use of the middle static contact, and is convenient and quick to operate. Workers do not need to directly contact the middle movable plate, and the degree of automation and safety factor are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0023] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0024] Figure 3 It is a schematic structural diagram of the upper static contact group, the middle static contact group and the lower static contact group of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the lower moving mechanism of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the moving mechanism of the present invention;

[0027] Figure 6It is a schematic diagram of the structure of the second upper movable plate and the second lower movable plate of the present invention;

[0028] In the figure: first upper movable plate 1; second upper movable plate 2; first upper plate body 201; second pin shaft hole 2011; first upper guide groove 2012; first lower pin shaft 2013; second upper plate body 202; second upper pin shaft 2021; first lower guide groove 2022; first lower movable plate 3; second lower movable plate 4; first lower plate body 401; first upper pin shaft 4011; second upper guide groove 4012; second lower plate body 402; first pin shaft hole 4021; second lower guide groove 4022; second lower pin shaft 4023; upper movable mechanism 5; upper driving rod 5 01; first upper moving rod 502; first upper connecting rod 503; second upper moving rod 504; second upper connecting rod 505; upper strip hole 506; lower moving mechanism 6; lower driving rod 601; first lower moving rod 602; first lower connecting rod 603; second lower moving rod 604; second lower connecting rod 605; lower strip hole 606; first upper sleeve 7; first lower sleeve 8; second upper sleeve 9; second lower sleeve 10; support rod 11; pin 12; upper spacing 13; lower spacing 14; upper static contact group A; middle static contact group B; lower static contact group C. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] Example 1: Figures 1 to 6A medium-voltage dual power supply safety insulation protection mechanism is shown, comprising a first upper movable plate 1, a second upper movable plate 2, a first lower movable plate 3, and a second lower movable plate 4; the first upper movable plate 1 covers the position of the upper static contact group, the first lower movable plate 3 covers the position of the lower static contact group, the second upper movable plate 2 and the second lower movable plate 4 form a middle movable plate, and the middle movable plate covers the position of the middle static contact group; the first upper movable plate 1, the second upper movable plate 2, the first lower movable plate 3, and the second lower movable plate 4 are all made of insulating materials;

[0032] The first upper movable plate 1 is located on the upper part of the second upper movable plate 2, and the first upper movable plate 1 and the second upper movable plate 2 are both connected to the upper movable mechanism 5, and the first upper movable plate 1 and the second upper movable plate 2 are both moved upward under the action of the upper movable mechanism 5; an upper spacing 13 is left between the bottom end of the upper static contact group and the top end of the middle contact group, and the upper spacing matches the width of the second upper movable plate 2;

[0033] The first lower moving plate 3 is located at the lower part of the second lower moving plate 4, and the first lower moving plate 3 and the second lower moving plate 4 are both connected to the lower moving mechanism 6, and the first lower moving plate 3 and the second lower moving plate 4 move downward under the action of the lower moving mechanism 6; a lower spacing 14 is left between the bottom end of the middle static contact group and the top end of the lower static contact group, and the lower spacing matches the width of the second lower moving plate 4.

[0034] The upper static contact group in the present invention is the main power supply incoming circuit, the lower static contact group is the backup power supply incoming circuit, and the middle static contact group is the load outgoing circuit. When the circuit does not need to be connected, the first upper movable plate 1 covers the upper static contact group position, the first lower movable plate 3 covers the lower static contact group position, the second upper movable plate 2 and the second lower movable plate 4 form a middle movable plate, and the middle movable plate covers the middle static contact group position to achieve protection for the upper static contact group, the lower static contact group and the middle static contact group, and achieve safe insulation of the circuit; when the circuit needs to be connected, the main power supply incoming circuit, the backup power supply incoming circuit and the load outgoing circuit need to be connected, and the selection of the main power supply incoming circuit or the backup power supply incoming circuit is controlled by another switch. In the present application, when the main power supply, the backup power supply and the load need to be connected, it is only necessary to expose the upper static contact group, the lower static contact group and the middle static contact group, and then connect them to the three groups of moving contact groups respectively. Specifically, the upper moving mechanism 5 is driven so that the upper moving mechanism 5 drives the first upper moving plate 1 and the second upper moving plate 2 to move upward, and the lower moving mechanism 6 is driven so that the lower moving mechanism 6 drives the first lower moving plate 3 and the second lower moving plate 4 to move downward, and an upper spacing 13 is left between the bottom end of the upper static contact group and the top end of the middle contact group, and the upper spacing matches the width of the second upper moving plate 2, and a lower spacing 14 is left between the bottom end of the middle static contact group and the top end of the lower static contact group, and the lower spacing matches the width of the second lower moving plate 4. When the second upper moving plate 2 moves upward, it can move to the position of the upper spacing 13, and when the second lower moving plate 4 moves downward, it can move to the position of the lower spacing 14, so that the upper static contact group, the middle static contact group and the lower static contact group are all exposed, and are connected to the three groups of moving contacts respectively, so as to realize the connection of the circuit.

[0035] As a preferred embodiment, the first upper movable plate 1 in the present application is connected to the first upper sleeve 7, the first lower movable plate 3 is connected to the first lower sleeve 8, the first upper movable plate 1 is connected to the second upper sleeve 9, and the second lower movable plate 4 is connected to the second lower sleeve 10;

[0036] The upper moving mechanism 5 connects the first upper sleeve 7 and the second upper sleeve 9 ; the lower moving mechanism 6 connects the first lower sleeve 8 and the second lower sleeve 10 .

[0037] When it is necessary to expose the upper static contact group, the middle static contact group and the lower static contact group, the upper moving mechanism 5 is driven, and the upper moving mechanism 5 drives the first upper sleeve 7 and the second upper sleeve 9 to move upward, thereby realizing the upward movement of the first upper moving plate 1 and the second upper moving plate 2, and the lower moving mechanism 6 is driven, and the lower moving mechanism 6 drives the first lower sleeve 8 and the second lower sleeve 10 to move downward, thereby realizing the downward movement of the first lower moving plate 3 and the second lower moving plate 4, and finally realizing the exposure of each contact group, so as to facilitate the connection of the three moving contact groups with the upper static contact group, the middle static contact group and the lower static contact in the present application respectively.

[0038] As a preferred embodiment, it further includes a support rod 11, on which the first upper sleeve 7, the second upper sleeve 9, the first lower sleeve 8, and the second lower sleeve 10 are respectively arranged, and the first upper sleeve 7 and the second upper sleeve 9 move upward along the support rod 11 under the drive of the upper moving mechanism 5, and the first lower sleeve 8 and the second lower sleeve 10 move downward along the support rod 11 under the drive of the lower moving mechanism 6. The arrangement of the support rod 11 improves the stability of the first upper sleeve 7 and the second upper sleeve 9 moving upward, and the first lower sleeve 8 and the second lower sleeve 10 moving downward.

[0039] Embodiment 2: In this embodiment, as Figures 4 to 6 As shown, the upper moving mechanism includes an upper driving rod 501, a first upper moving rod 502, a first upper connecting rod 503, a second upper moving rod 504 and a second upper connecting rod 505;

[0040] The upper driving rod 501 is provided with one end of a first upper moving rod 502, the other end of the first upper moving rod 502 is connected to a first upper connecting rod 503, the second upper moving rod 504 is provided with an upper strip hole 506, the first upper connecting rod 503 is connected to the first upper sleeve 7 after passing through the upper strip hole 506, the second upper moving rod 504 is provided with a second upper connecting rod 505, and the second upper connecting rod 505 is connected to the second upper sleeve 9;

[0041] The first upper moving rod 502 and the second upper moving rod 504 are both vertically arranged, the upper strip hole 506 is located at the upper part of the second upper connecting rod 504 , and the second upper connecting rod 505 is located at the lower part of the second upper connecting rod 504 .

[0042] The lower moving mechanism 6 includes a lower driving rod 601, a first lower moving rod 602, a first lower connecting rod 603, a second lower moving rod 604 and a second lower connecting rod 605;

[0043] The lower driving rod 601 is connected to one end of the first lower moving rod 602, the other end of the first lower moving rod 602 is connected to the first lower connecting rod 603, the second lower moving rod 604 is provided with a lower strip hole 606, the first lower connecting rod 603 is connected to the first lower sleeve 8 after passing through the lower strip hole 606, the second lower moving rod 604 is provided with a second lower connecting rod 605, and the second lower connecting rod 605 is connected to the second lower sleeve 10;

[0044] The first lower moving rod 602 and the second lower moving rod 604 are both vertically arranged, the lower strip-shaped hole 606 is located at the lower part of the second lower connecting rod 604 , and the second lower connecting rod 605 is located at the upper part of the second lower connecting rod 604 .

[0045] When it is necessary to drive the first upper moving plate 1 and the second upper moving plate 2 to move upward, and the first lower moving plate 3 and the second lower moving plate 4 to move downward, the worker lifts up one end of the upper driving rod 501 connected to the first upper moving rod 502. At this time, the first upper moving rod 502 moves upward, driving the first upper connecting rod 503 to move upward along the upper strip hole 506, and the first upper connecting rod 503 drives the first upper sleeve 7 and then drives the first upper moving plate 1 to move upward, so that the upper static contact group is exposed; when the first upper connecting rod 503 moves to the top end of the upper strip hole 506, it drives the second upper moving rod 504 to move upward, and then drives the second upper sleeve 9 to move upward, so that the second upper connecting plate 2 moves upward, until the second upper connecting plate 2 moves upward to the upper spacing 13;

[0046] When one end of the lower driving rod 601 connected to the first lower moving rod 602 is pressed downward, the first lower moving rod 602 is driven to move downward, so that the first lower moving rod 602 drives the first lower sleeve 8 and then drives the first lower moving plate 3 to move downward. At the same time, the first lower connecting rod 603 moves downward along the lower strip hole 606. When the first lower connecting rod 603 moves to the bottom end of the lower strip hole, it drives the second lower moving rod 604 to move downward, and then drives the second lower sleeve 10 to move downward, so that the second lower moving plate 4 moves downward, until the second lower moving plate 4 moves downward to the lower spacing 14, so that the middle static contact group and the lower static contact are exposed, which is convenient for circuit connection.

[0047] As a preferred embodiment, the upper driving rod 501 and the lower driving rod 601 in the present application are cross-arranged to form an X shape, and a pin 12 is provided at the intersection of the upper driving rod 501 and the lower driving rod 601. When it is necessary to expose the upper static contact group, the middle static contact group and the lower static contact, the upper driving rod 501 and the lower driving rod 601 can be manually held in the middle to rotate the upper driving rod 501 and the lower driving rod 601 along the pin 12 respectively, so that one end of the upper driving rod 501 connected to the first upper moving rod 502 is lifted upward, and one end of the lower driving rod 601 connected to the first lower moving rod 602 is moved downward.

[0048] As a preferred embodiment, the second upper movable plate 2 includes a first upper plate body 201 and a second upper plate body 202, the second upper sleeve 9 is connected to the second upper plate body 202, a second upper pin shaft 2021 is provided on the second upper plate body 202, a second pin shaft hole 2011 is correspondingly provided on the first upper plate body 201, and the second upper pin shaft 2021 is matchedly arranged in the second pin shaft hole 2011;

[0049] The second lower movable plate 4 includes a first lower plate body 401 and a second lower plate body 402, and the second lower sleeve 10 is connected to the first lower plate body 401. The first lower plate body 401 is provided with a first upper pin shaft 4011, and the second plate body 402 is correspondingly provided with a first pin shaft hole 4021. The first upper pin shaft 4011 is matchedly arranged in the first pin shaft hole 4021.

[0050] The second upper plate 202 and the first upper plate 201 are moved to the upper position where the second upper plate 202 and the first upper plate 201 are moved to the upper position, thereby completing the movement of the second upper movable plate 2. The second upper plate 202 and the first upper plate 201 are moved to the upper position where the second upper plate 202 and the first upper plate 201 are moved to the upper position, thereby completing the movement of the second upper movable plate 2. The second upper plate 202 and the first upper plate 201 are moved to the upper position where the second upper movable plate 202 and the first upper plate 201 are moved to the upper position, thereby completing the movement of the second upper movable plate 2. The second upper plate 202 and the first upper plate 201 are moved to the upper position where the second upper movable plate 202 and the first upper plate 201 are moved to the upper position, thereby completing the movement of the second upper movable plate 2. The second upper plate 202 and the first upper plate 201 are moved to the upper position, thereby completing the movement of the second upper movable plate 2. The second upper plate 202 and the first upper plate 201 are moved to the upper position, thereby completing the movement of the second upper movable plate 2. 604 moves downward, thereby driving the second lower sleeve 10 to move downward, thereby realizing the downward movement of the first lower plate 401. The setting of the first upper pin shaft 4011 and the first pin shaft hole 4021 is convenient for realizing the guiding effect on the first lower plate body 401, ensuring the stability of the downward movement of the first lower plate body 401. When the first lower plate body 401 moves downward and overlaps to the bottom end of the second lower plate body 402, as the second lower moving rod 604 continues to move downward, the first lower plate body 401 drives the second lower plate body 402 to move downward until the stacked first lower plate body 401 and the second lower plate body 402 move to the lower spacing 14, completing the movement of the second lower moving plate 4, so that the middle static contact group is completely exposed, which is convenient for circuit connection; the stacked first lower plate body 401 and the second lower plate body 402 reduce the width of the second lower moving plate 4, which is convenient for matching the smaller width of the lower spacing 14, thereby achieving the purpose of reducing the volume of the protective mechanism.

[0051] The first upper plate 201 is also provided with a first upper guide groove 2012, and the second upper plate 202 is provided with a first lower guide groove 2022. The first upper guide groove 2012 and the first lower guide groove 2022 are arranged opposite to each other, and the first upper guide groove 2012 and the first lower guide groove 2022 are connected, and a first lower pin shaft 2013 is arranged in the first upper guide groove 2012; the matching arrangement of the first upper guide groove 2012, the first lower guide groove 2022 and the first lower pin shaft 2013 is conducive to achieving the guiding effect of the second upper plate 202 moving along the first upper plate 201, improving the stability of the second upper plate 202 moving along the first upper plate 201, and at the same time, it is conducive to pushing the first lower pin shaft 2013 through the second upper plate 202 to drive the first upper plate 201 to continue to move upward;

[0052] A second upper guide groove 4012 is also provided on the first lower plate body 401, and a second lower guide groove 4022 is provided on the second lower plate body 402. The second upper guide groove 4012 and the second lower guide groove 4022 are arranged opposite to each other, and the second upper guide groove 4012 and the second lower guide groove 4022 are connected, and a second lower pin shaft 4023 is provided in the second lower guide groove 4022; the arrangement of the second upper guide groove 4012, the second lower guide groove 4022 and the second lower pin shaft 4023 is conducive to realizing the guiding effect of the first lower plate body moving downward along the second lower plate body, improving the stability of the first lower plate body moving along the second lower plate body, and is conducive to pushing the second lower pin shaft 4023 through the first lower plate body and then driving the second lower plate body to continue to move downward.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0054] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A medium voltage dual power supply safety insulation protection mechanism, characterized in that: The invention comprises a first upper movable plate (1), a second upper movable plate (2), a first lower movable plate (3) and a second lower movable plate (4); the first upper movable plate (1) covers the position of the upper static contact group, the first lower movable plate (3) covers the position of the lower static contact group, the second upper movable plate (2) and the second lower movable plate (4) form a middle movable plate, and the middle movable plate covers the position of the middle static contact group; The first upper movable plate (1) is located on the upper part of the second upper movable plate (2); the first upper movable plate (1) and the second upper movable plate (2) are both connected to an upper movable mechanism (5); the first upper movable plate (1) and the second upper movable plate (2) are both moved upward under the action of the upper movable mechanism (5); an upper spacing is left between the bottom end of the upper static contact group and the top end of the middle contact group, and the upper spacing matches the width of the second upper movable plate (2); The first lower movable plate (3) is located at the lower part of the second lower movable plate (4); the first lower movable plate (3) and the second lower movable plate (4) are both connected to a lower movable mechanism (6); the first lower movable plate (3) and the second lower movable plate (4) both move downward under the action of the lower movable mechanism (6); a lower spacing is left between the bottom end of the middle static contact group and the top end of the lower static contact group, and the lower spacing matches the width of the second lower movable plate (4).

2. According to claim 1, the medium voltage dual power supply safety insulation protection mechanism is characterized in that: The first upper movable plate (1) is connected to a first upper sleeve (7), the first lower movable plate (3) is connected to a first lower sleeve (8), the second upper movable plate (2) is connected to a second upper sleeve (9), and the second lower movable plate (4) is connected to a second lower sleeve (10); The upper moving mechanism (5) connects the first upper sleeve (7) and the second upper sleeve (9); the lower moving mechanism (6) connects the first lower sleeve (8) and the second lower sleeve (10).

3. The medium voltage dual power supply safety insulation protection mechanism according to claim 1 is characterized in that: It also includes a support rod (11), the first upper sleeve (7), the second upper sleeve (9), the first lower sleeve (8), and the second lower sleeve (10) are respectively arranged on the support rod (11), the first upper sleeve (7) and the second upper sleeve (9) are driven by the upper moving mechanism (5) to move upward along the support rod (11), and the first lower sleeve (8) and the second lower sleeve (10) are driven by the lower moving mechanism (6) to move downward along the support rod (11).

4. The medium voltage dual power supply safety insulation protection mechanism according to claim 1 is characterized in that: The upper moving mechanism comprises an upper driving rod (501), a first upper moving rod (502), a first upper connecting rod (503), a second upper moving rod (504) and a second upper connecting rod (505); The upper driving rod (501) is provided with one end of a first upper moving rod (502), the other end of the first upper moving rod (502) is connected to a first upper connecting rod (503), the second upper moving rod (504) is provided with an upper strip hole (506), the first upper connecting rod (503) is connected to the first upper sleeve (7) after passing through the upper strip hole (506), the second upper moving rod (2) is provided with a second upper connecting rod (505), and the second upper connecting rod (505) is connected to the second upper sleeve (9); The first upper moving rod (502) and the second upper moving rod (504) are both arranged vertically, the upper strip hole (503) is located at the upper part of the second upper connecting rod (504), and the second upper connecting rod (505) is located at the lower part of the second upper connecting rod (504).

5. The medium voltage dual power supply safety insulation protection mechanism according to claim 4 is characterized in that: The lower moving mechanism (6) comprises a lower driving rod (601), a first lower moving rod (602), a first lower connecting rod (603), a second lower moving rod (604) and a second lower connecting rod (605); The lower driving rod (601) is connected to one end of the first lower moving rod (602), the other end of the first lower moving rod (602) is connected to the first lower connecting rod (603), the second lower moving rod (604) is provided with a lower strip hole (606), the first lower connecting rod (603) is connected to the first lower sleeve (8) after passing through the lower strip hole (606), the second lower moving rod (604) is provided with a second lower connecting rod (605), and the second lower connecting rod (605) is connected to the second lower sleeve (10); The first lower moving rod (602) and the second lower moving rod (604) are both vertically arranged, the lower strip hole (606) is located at the lower part of the second lower connecting rod (604), and the second lower connecting rod (605) is located at the upper part of the second lower connecting rod (604).

6. The medium voltage dual power supply safety insulation protection mechanism according to claim 5, characterized in that: The upper driving rod (501) and the lower driving rod (601) are arranged crosswise to form an X shape, and a pin shaft (12) is arranged at the intersection of the upper driving rod (501) and the lower driving rod (601).

7. The medium voltage dual power supply safety insulation protection mechanism according to claim 1 is characterized in that: The second upper movable plate (2) comprises a first upper plate body (201) and a second upper plate body (202), the second upper plate body (202) being provided with a second upper pin shaft (2021), the first upper plate body (201) being correspondingly provided with a second pin shaft hole (2011), and the second upper pin shaft (2021) being matchedly arranged in the second pin shaft hole (2011); The second lower movable plate (4) comprises a first lower plate body (401) and a second lower plate body (402), the first lower plate body (401) being provided with a first upper pin shaft (4011), the second plate body (402) being correspondingly provided with a first pin shaft hole (4021), the first upper pin shaft (4011) being matchedly arranged in the first pin shaft hole (4021).

8. The medium voltage dual power supply safety insulation protection mechanism according to claim 7 is characterized in that: The first upper plate body (201) is also provided with a first upper guide groove (2012), and the second upper plate body (202) is provided with a first lower guide groove (2022), the first upper guide groove (2012) and the first lower guide groove (2022) are arranged opposite to each other, and the first upper guide groove (2012) and the first lower guide groove (2022) are connected, and a first lower pin shaft (2013) is provided in the first upper guide groove (2012); The first lower plate body (401) is also provided with a second upper guide groove (4012), and the second lower plate body (402) is provided with a second lower guide groove (4022). The second upper guide groove (4012) and the second lower guide groove (4022) are arranged opposite to each other, and the second lower guide groove (4012) and the second lower guide groove (4022) are connected. A second lower pin shaft (4023) is provided in the second lower guide groove (4022).

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