A device and method for quickly identifying the closing state of a knife switch at night

Abstract

The application relates to the field of knife switch equipment, and discloses a device and method for quickly identifying the closed state of a knife switch at night, which comprises a base, a static contact seat assembly and a moving contact seat assembly are arranged at the top end of the base, the static contact seat assembly comprises a static contact seat body fixedly arranged at the top end of the base, a first power receiving plate is arranged at the top end of the static contact seat body, a knife switch is arranged on the first power receiving plate, the moving contact seat assembly comprises a moving contact seat body fixedly arranged at the top end of the base, a second power receiving plate is arranged at the top end of the moving contact seat body, a pressing and moving piece is arranged on the moving contact seat body, and the moving contact seat assembly comprises a moving contact seat body fixedly arranged at the top end of the base. According to the device, when closing, the rotating roller is rotated to a position where the first indicating plate and the second indicating plate are in a straight line during the movement of the arc-shaped shell, so that the workers can quickly and accurately identify the closed state of the knife switch at night, and the device has the advantages of simple structure and low cost.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of knife switch equipment, and particularly relates to a device and method for quickly identifying the closed state of a knife switch at night. BACKGROUND

[0002] In a power system, a knife switch on an overhead line is an important switch device, and accurate determination of the closed state of the knife switch is crucial for safe and stable operation of the power system. Especially when operation or inspection is performed at night, the actual closed position of the knife switch is difficult for an operator to clearly observe due to poor light conditions, and there is a great safety hazard. A traditional method for determining the state of a knife switch mainly relies on direct observation with the naked eye. In a night environment, the accuracy and reliability of this method are low, and misjudgment (the closed position is not in place, resulting in insufficient contact surface and causing heating) is easily caused, thereby causing a power accident. Although some devices for assisting in determining the state of a knife switch exist on the market, most of them have complex structures and high costs, and the recognition effect at night is not ideal, which cannot meet the needs of actual operation. Therefore, there is an urgent need for a device that has a simple structure, is low in cost, and can quickly and accurately identify the closed state of a knife switch at night. SUMMARY

[0003] In view of the above problems, the present application provides a device and method for quickly identifying the closed state of a knife switch at night, which effectively solves the problems in the background art.

[0004] To achieve the above object, the present application provides the following technical scheme: a device for quickly identifying the closed state of a knife switch at night, comprising a base, a static contact seat assembly and a moving contact seat assembly are installed at the top end of the base;

[0005] The static contact seat assembly comprises a static contact seat body fixedly installed at the top end of the base, a first power receiving plate is installed at the top end of the static contact seat body, and a knife switch piece is installed on the first power receiving plate;

[0006] The moving contact seat assembly comprises a moving contact seat body fixedly installed at the top end of the base, a second power receiving plate is installed at the top end of the moving contact seat body, and a pressing and moving piece is installed on the moving contact seat body;

[0007] The pressing and moving piece comprises a mounting cavity symmetrically formed in the interior of the moving contact seat body, the ends of the mounting cavity respectively penetrate to both sides of the moving contact seat body, and a night indicating piece and a guide tooth plate are arranged in the interior of the mounting cavity;

[0008] The night indicating part comprises an arc-shaped shell, two end circular plates symmetrically installed at two ends of the arc-shaped shell, a first indicating plate installed at one end of the arc-shaped shell away from the arc-shaped shell, a rotating roller rotatably installed between the two end circular plates, a second indicating plate symmetrically installed at a bottom end of the rotating roller, the first indicating plate and the second indicating plate are coated with green reflective paint, and a clamping fixing part is arranged on the rotating roller.

[0009] Preferably, a gear is installed at a middle part of the rotating roller, a diameter of the gear is smaller than a diameter of the rotating roller, the diameter of the gear is the same as a diameter of the end circular plate, a guide groove is formed on the arc-shaped shell, a guide toothed plate is slidably arranged on an inner side of the guide groove, the guide toothed plate is in meshing connection with the gear, and a fixing rod is installed between the guide toothed plate and an inner top wall of the installation cavity.

[0010] Preferably, a lower connecting plate is arranged on an inner side of the installation cavity, two upper connecting plates are arranged on a top of the movable contact seat body, the two upper connecting plates are symmetrically arranged on two sides of the second power receiving plate, the two upper connecting plates are respectively above the two lower connecting plates, a connecting rod is symmetrically installed between the lower connecting plate and the upper connecting plate, and the connecting rod is in longitudinal sliding connection with the movable contact seat body.

[0011] Preferably, the lower connecting plate is located at a side of the arc-shaped shell away from an opening end of the installation cavity, a first spring is fixedly installed at a bottom end of the lower connecting plate, the bottom end of the first spring is fixedly connected with an inner bottom wall of the installation cavity, two connecting rods are symmetrically hingedly installed at the bottom end of the lower connecting plate, and the other ends of the connecting rods are hingedly connected with the arc-shaped shell.

[0012] Preferably, the clamping fixing part comprises a rod groove symmetrically formed in an inner part of the rotating roller, the rod groove is horizontally arranged, two ends of the rod groove are respectively arranged towards the arc-shaped shell and an opening end of the installation cavity, a limiting groove is formed on the rod groove, a limiting block is movably installed in the limiting groove, a clamping rod is arranged on an inner side of the rod groove, the clamping rod is fixedly connected with the limiting block, a second spring is fixedly installed at a side of the limiting block close to the arc-shaped shell, one end of the second spring is fixedly connected with an end inner wall of the limiting groove close to the arc-shaped shell, and an end plate is installed at an end of the clamping rod away from the arc-shaped shell.

[0013] Preferably, two clamping barrels are symmetrically installed on an inner bottom wall of the installation cavity, and a negative pressure fixing part is arranged above the clamping barrels.

[0014] Preferably, the negative pressure fixing part comprises L-shaped pipes symmetrically installed at a top end of the movable contact seat body, the L-shaped pipes are composed of a horizontal pipe and a vertical pipe, an end of the horizontal pipe is provided with a vertical plate, the vertical plate is fixedly installed at the top end of the movable contact seat body, the vertical plate is located at a side of the upper connecting plate away from the second power receiving plate, suction discs are symmetrically installed at a side of the vertical plate close to the upper connecting plate, the two suction discs are respectively connected with the two L-shaped pipes, and the vertical pipes of the two L-shaped pipes are respectively arranged above the two clamping barrels.

[0015] Preferably, the longitudinal pipe of the L-shaped pipe is movably arranged with a piston, a limiting plate is arranged below the piston and is fixedly arranged on the inner wall of the longitudinal pipe, a third spring is arranged between the limiting plate and the piston, a bottom rod is arranged at the bottom end of the piston, the bottom end of the bottom rod penetrates into the inside of the mounting cavity, a hanging ring is arranged at the bottom end of the bottom rod, and a hook is arranged on the end plate.

[0016] Preferably, the knife switch comprises two insulating connecting plates, the insulating connecting plates are bolted to one end of the first electrically-conductive plate, an insulating rubber shaft is arranged between the two insulating connecting plates, the insulating rubber shaft is rotatably connected to the first electrically-conductive plate, a pull ring is bolted between the two insulating connecting plates, the pull ring is coated with red reflective paint on the outer surface, and insulating side plates are arranged on the sides of the two insulating connecting plates away from each other.

[0017] Preferably, the detection method of the device for quickly identifying the closing state of the knife switch at night comprises the following steps:

[0018] S1, closing: the insulating connecting plates are rotated downward, so that the two insulating connecting plates are moved to the two sides of the second electrically-conductive plate;

[0019] S2, indicating: the insulating connecting plates are rotated downward to push the upper connecting plate to move downward, thereby pushing the arc-shaped housing to move, and after the rotating roller is rotated, the second indicating plate on the rotating roller is in a straight line with the first indicating plate, and the second indicating plate and the first indicating plate are both coated with green reflective paint, thereby facilitating the observation of the staff.

[0020] Compared with the prior art, the device has the following beneficial effects:

[0021] 1. The first indicating plate is arranged on the side of the end plate away from the arc-shaped housing, the second indicating plate is arranged at the bottom of the rotating roller, the second indicating plate and the first indicating plate are both coated with green reflective paint, the gear at the middle part of the rotating roller is meshingly connected with the guide toothed plate, so that when closing, the rotating roller is rotated to the first indicating plate and the second indicating plate are in a straight line during the movement of the arc-shaped housing, thereby facilitating the staff to quickly and accurately identify the closing state of the device at night, and the structure is simple and the cost is low.

[0022] 2. The arc-shaped housing is moved to rotate the rotating roller to the rod groove in a longitudinal state, the clamping rod in the rod groove is moved downward under the action of gravity and clamped into the clamping cylinder on the bottom wall of the mounting cavity, thereby fixing the lower connecting plate, avoiding the upward ejection of the insulating connecting plates under the elastic force of the first spring, and improving the electrically-conductive stability.

[0023] 3、The present application, by rotating the roller to make the hook card into the ring inside, and with the card bar moving down, pull the piston to move down, while the end face of the suction cup contacts with the insulating side plate on the contact piece, so that the suction cup and the contact piece produce negative pressure suction, and the contact piece is fixed by negative pressure, further improving the contact stability. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, and do not limit the present application.

[0025] In the drawings:

[0026] Figure 1 The device structure schematic diagram for the present application night fast identification knife switch closing state;

[0027] Figure 2 The moving contact seat assembly structure schematic diagram for the present application;

[0028] Figure 3 The night indicating member structure schematic diagram for the present application;

[0029] Figure 4 The rotating roller structure schematic diagram for the present application;

[0030] Figure 5 The card fixing member structure schematic diagram for the present application;

[0031] Figure 6 The negative pressure fixing member structure schematic diagram for the present application;

[0032] In the diagram: 1. Base; 2. Stationary contact seat assembly; 201. Stationary contact seat body; 202. First contact plate; 203. Knife switch component; 2031. Knife switch contact piece; 2032. Insulating connecting plate; 2033. Pull ring; 2034. Insulating side plate; 3. Moving contact seat assembly; 301. Moving contact seat body; 302. Second contact plate; 303. Pressing moving component; 3031. Mounting cavity; 3032. Lower connecting plate; 3033. Upper connecting plate; 3034. Connecting rod; 3035. First spring; 3036. Connecting rod; 304. Night indicator; 3041. Arc-shaped housing; 3042. End circular plate; 3043. First indicator plate; 3044, rotating roller; 3045, gear; 3046, second indicator plate; 3047, guide groove; 305, guide tooth plate; 306, fixing rod; 307, snap-fit ​​fastener; 3071, rod groove; 3072, limiting groove; 3073, limiting block; 3074, locking rod; 3075, second spring; 3076, end plate; 308, locking sleeve; 309, negative pressure fastener; 3091, hook; 3092, vertical plate; 3093, suction cup; 3094, L-shaped tube; 3095, limiting plate; 3096, piston; 3097, third spring; 3098, bottom rod; 3099, hanging ring. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Example 1, by Figures 1-6 The present invention relates to a device for quickly identifying the closed status of a knife switch at night, comprising a base 1, wherein a stationary contact seat assembly 2 and a moving contact seat assembly 3 are mounted on the top of the base 1.

[0035] The stationary contact base assembly 2 includes a stationary contact base body 201 fixedly installed on the top of the base 1. A first contact plate 202 is installed on the top of the stationary contact base body 201. A switch piece 203 is installed on the first contact plate 202. The switch piece 203 includes two switch contact pieces 2031. An insulating connecting plate 2032 is bolted to one end of the switch contact piece 2031 near the first contact plate 202. An insulating rubber shaft is installed between the two insulating connecting plates 2032. The insulating rubber shaft is rotatably connected to the first contact plate 202. A pull ring 2033 is bolted between the two switch contact pieces 2031. The outer surface of the pull ring 2033 is coated with red reflective paint. An insulating side plate 2034 is provided on the side of the two switch contact pieces 2031 that is far away from each other.

[0036] The movable contact seat assembly 3 comprises a movable contact seat body 301 fixedly installed at the top end of the base 1, a second power connection plate 302 is installed at the top end of the movable contact seat body 301, a pressing movable part 303 is installed on the movable contact seat body 301, the pressing movable part 303 comprises a symmetrical installation cavity 3031 opened in the inside of the movable contact seat body 301, the ends of the installation cavity 3031 respectively penetrate to both sides of the movable contact seat body 301, and a night indicating part 304 and a guide tooth plate 305 are arranged in the inside of the installation cavity 3031;

[0037] The night indicating part 304 comprises an arc-shaped shell 3041, end circular plates 3042 are symmetrically installed at both ends of the arc-shaped shell 3041, a first indicating plate 3043 is installed at the end of the arc-shaped shell 3041 away from the first indicating plate 3043, a rotating roller 3044 is rotatably installed between the two end circular plates 3042, second indicating plates 3046 are symmetrically installed at the bottom end of the rotating roller 3044, the first indicating plate 3043 and the second indicating plate 3046 are both coated with green reflective paint, a clamping fixing part 307 is arranged on the rotating roller 3044, a gear 3045 is installed at the middle part of the rotating roller 3044, the diameter of the gear 3045 is smaller than that of the rotating roller 3044, the diameter of the gear 3045 is the same as that of the end circular plate 3042, a guide groove 3047 is opened in the arc-shaped shell 3041, a guide tooth plate 305 is slidably arranged on the inner side of the guide groove 3047, the guide tooth plate 305 is in meshing connection with the gear 3045, the first indicating plate 3043 is arranged on the side of the end circular plate 3042 away from the arc-shaped shell 3041, and the second indicating plate 3046 is arranged at the bottom of the rotating roller 3044, the second indicating plate 3046 and the first indicating plate 3043 are both coated with green reflective paint, the gear 3045 at the middle part of the rotating roller 3044 is in meshing connection with the guide tooth plate 305, so that when closing, the rotating roller 3044 is rotated to the position where the first indicating plate 3043 and the second indicating plate 3046 are in a straight line during the movement of the arc-shaped shell 3041, which facilitates the observation of the closing state by the staff at night, the fixed rod 306 is arranged between the guide tooth plate 305 and the inner top wall of the installation cavity 3031, two clamping barrels 308 are symmetrically installed on the inner bottom wall of the installation cavity 3031, and negative pressure fixing parts 309 are arranged above the clamping barrels 308.

[0038] The inner side of the mounting cavity 3031 is provided with a lower connecting plate 3032, and the top of the movable contact seat body 301 is provided with two upper connecting plates 3033 which are symmetrically arranged on the two sides of the second power connection plate 302. The two upper connecting plates 3033 are respectively above the two lower connecting plates 3032, and a connecting rod 3034 is symmetrically mounted between the lower connecting plate 3032 and the upper connecting plate 3033, and the connecting rod 3034 is longitudinally slidably connected with the movable contact seat body 301. The lower connecting plate 3032 is located on the side of the arc-shaped shell 3041 away from the opening end of the mounting cavity 3031, and the bottom end of the lower connecting plate 3032 is fixedly installed with a first spring 3035, the bottom end of the first spring 3035 is fixedly connected with the inner bottom wall of the mounting cavity 3031, and the bottom end of the lower connecting plate 3032 is symmetrically hingedly installed with two connecting rods 3036, and the other end of the connecting rod 3036 is hingedly connected with the arc-shaped shell 3041.

[0039] The clamping fixing member 307 includes a rod groove 3071 symmetrically arranged in the interior of the rotating roller 3044, the rod groove 3071 is horizontally arranged, and the two ends of the rod groove 3071 are respectively arranged towards the opening end of the arc-shaped shell 3041 and the mounting cavity 3031. A limiting groove 3072 is arranged on the rod groove 3071, and a limiting block 3073 is movably installed in the limiting groove 3072. A clamping rod 3074 is arranged on the inner side of the rod groove 3071, and the clamping rod 3074 is fixedly connected with the limiting block 3073. The side of the limiting block 3073 close to the arc-shaped shell 3041 is fixedly installed with a second spring 3075, one end of the second spring 3075 is fixedly connected with the inner wall of the end of the limiting groove 3072 close to the arc-shaped shell 3041, and the end of the clamping rod 3074 away from the arc-shaped shell 3041 is installed with an end plate 3076. After the arc-shaped shell 3041 moves, the rotating roller 3044 rotates, so that the rotating roller 3044 rotates to the longitudinal state of the rod groove 3071. The clamping rod 3074 in the rod groove 3071 moves downward under the action of gravity and is clamped into the clamping barrel 308 on the inner bottom wall of the mounting cavity 3031, thereby fixing the lower connecting plate 3032, avoiding the upward ejection of the movable contact power connection plate 2031 under the action of the elastic force of the first spring 3035, and improving the power connection stability.

[0040] The negative pressure fixing part 309 comprises L-shaped pipes 3094 symmetrically mounted on the top end of the movable contact seat body 301, the L-shaped pipes 3094 are composed of a horizontal pipe and a vertical pipe, the end of the horizontal pipe is provided with a vertical plate 3092, the vertical plate 3092 is fixedly mounted on the top end of the movable contact seat body 301, the vertical plate 3092 is located on the side of the upper connecting plate 3033 away from the second power receiving plate 302, the side of the vertical plate 3092 close to the upper connecting plate 3033 is symmetrically provided with suction cups 3093, the two suction cups 3093 are respectively communicated with the two L-shaped pipes 3094, the vertical pipes of the two L-shaped pipes 3094 are respectively arranged above the two clamping barrels 308, the piston 3096 is movably arranged in the vertical pipe of the L-shaped pipe 3094, the lower side of the piston 3096 is provided with a limiting plate 3095, the limiting plate 3095 is fixedly arranged on the inner wall of the vertical pipe, the third spring 3097 is arranged between the limiting plate 3095 and the piston 3096, the bottom end of the piston 3096 is provided with a bottom rod 3098, the bottom end of the bottom rod 3098 penetrates into the inside of the mounting cavity 3031, the bottom end of the bottom rod 3098 is provided with a hanging ring 3099, the hook 3091 is arranged on the end plate 3076, the hook 3091 is clamped into the inside of the hanging ring 3099 by rotating the rotating roller 3044, and with the downward movement of the clamping rod 3074, the piston 3096 is pulled to move downward, at the same time, the end surface of the suction cup 3093 is in contact with the insulating side plate 2034 on the movable contact piece 2031, so that the negative pressure suction force is generated between the suction cup 3093 and the movable contact piece 2031, the movable contact piece 2031 is fixed by negative pressure, and the power receiving stability is further improved.

[0041] Working principle: when the night operation is carried out, the staff rotates the movable contact piece 2031 downward around the insulating rubber shaft, so that the two movable contact pieces 2031 move to the two sides of the second power receiving plate 302, at this time, the two movable contact pieces 2031 are located on the two sides of the first power receiving plate 202 and the two sides of the second power receiving plate 302, and the movable contact piece 2031 is in contact with the first power receiving plate 202 and the second power receiving plate 302, so that the power receiving and closing are completed;

[0042] When the movable contact piece 2031 is rotated downward, the two movable contact pieces 2031 are respectively moved to the gap between the two vertical plates 3092 and the second power receiving plate 302, and the upper connecting plate 3033 is pushed to move downward until the insulating side plate 2034 is tightly attached to the end surface of the suction cup 3093;

[0043] When the lower connecting plate 3032 moves downward, the arc-shaped shell 3041 is pushed to move along the guide tooth plate 305 by the connecting rod 3036, and the rotating roller 3044 rotates due to the gear 3045 in the middle of the rotating roller 3044 being engaged with the guide tooth plate 305, and when the displacement reaches the limit position, the rotating roller 3044 rotates to the vertical state of the clamping rod 3074, at this time, the hook 3091 on the end plate 3076 is clamped into the hanging ring 3099, and the clamping rod 3074 moves downward under the action of its own gravity, so that one end of the clamping rod 3074 is clamped into the clamping barrel 308;

[0044] Firstly, the clamping rod 3074 is clamped into the clamping barrel 308, so as to fix the lower connecting plate 3032, avoid the unstable electricity connection caused by the upward pushing of the contact blade 2031 due to the elastic force of the first spring 3035 compressed by the downward movement of the lower connecting plate 3032;

[0045] Secondly, the clamping rod 3074 moves downward, the piston 3096 is pulled downward by the hook 3091 and the hanging ring 3099, and the end surface of the suction cup 3093 is tightly attached to the insulating side plate 2034 on the contact blade 2031, so that the negative pressure suction force is generated between the suction cup 3093 and the insulating side plate 2034, thereby the contact blade 2031 is fixed by negative pressure, and the electricity connection stability is improved;

[0046] Finally, at this time, the rotating roller 3044 moves to the end position of the installation cavity 3031, and the rotating roller 3044 rotates, so that the second indicating plate 3046 originally located at the bottom of the rotating roller 3044 moves to the side of the rotating roller 3044 away from the arc-shaped shell 3041, so that the two second indicating plates 3046 and the two first indicating plates 3043 are in a straight line, and the two first indicating plates 3043 and the second indicating plate 3046 are coated with green reflective paint, so that the staff can judge the closed state of the knife switch at night.

[0047] It should be noted that, in the present text, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0048] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A device for quickly identifying the closing status of a disconnector at night, comprising a base (1), characterized in that: The base (1) is equipped with a stationary contact seat assembly (2) and a moving contact seat assembly (3) at its top. The stationary contact base assembly (2) includes a stationary contact base body (201) fixedly installed on the top of the base (1), a first electrical plate (202) is installed on the top of the stationary contact base body (201), and a switch (203) is installed on the first electrical plate (202). The moving contact base assembly (3) includes a moving contact base body (301) fixedly installed on the top of the base (1), a second contact plate (302) is installed on the top of the moving contact base body (301), and a pressing moving part (303) is installed on the moving contact base body (301). The pressing moving member (303) includes mounting cavities (3031) symmetrically opened inside the moving contact seat body (301). The ends of the mounting cavities (3031) respectively extend to both sides of the moving contact seat body (301). A night indicator (304) and a guide tooth plate (305) are provided inside the mounting cavity (3031). The night indicator (304) includes an arc-shaped housing (3041), with end circular plates (3042) symmetrically mounted at both ends of the arc-shaped housing (3041). A first indicator plate (3043) is mounted at the end away from the arc-shaped housing (3041). A rotating roller (3044) is rotatably mounted between the two end circular plates (3042). A second indicator plate (3046) is symmetrically mounted at the bottom end of the rotating roller (3044). Both the first indicator plate (3043) and the second indicator plate (3046) are coated with green reflective paint. The rotating roller (3044) is equipped with... There is a snap-fit ​​fastener (307); the inner side of the mounting cavity (3031) is provided with a lower connecting plate (3032), and the top of the moving contact seat body (301) is provided with two upper connecting plates (3033). The two upper connecting plates (3033) are symmetrically arranged on both sides of the second electrical plate (302). The two upper connecting plates (3033) are respectively above the two lower connecting plates (3032). A connecting rod (3034) is symmetrically installed between the lower connecting plate (3032) and the upper connecting plate (3033). The connecting rod (3034) is longitudinally slidably connected to the moving contact seat body (301).

2. The device for rapidly identifying the closing status of a disconnector at night according to claim 1, characterized in that: A gear (3045) is installed in the middle of the rotating roller (3044). The diameter of the gear (3045) is smaller than that of the rotating roller (3044). The diameter of the gear (3045) is the same as that of the end circular plate (3042). A guide groove (3047) is provided on the arc-shaped shell (3041). A guide tooth plate (305) is slidably provided on the inner side of the guide groove (3047). The guide tooth plate (305) meshes with the gear (3045). A fixing rod (306) is installed between the guide tooth plate (305) and the inner top wall of the mounting cavity (3031).

3. The device for rapidly identifying the closing status of a disconnector at night according to claim 2, characterized in that: The lower connecting plate (3032) is located on the side of the arc-shaped shell (3041) away from the opening of the mounting cavity (3031). A first spring (3035) is fixedly installed at the bottom end of the lower connecting plate (3032). The bottom end of the first spring (3035) is fixedly connected to the inner bottom wall of the mounting cavity (3031). Two connecting rods (3036) are symmetrically hinged at the bottom end of the lower connecting plate (3032). The other end of the connecting rods (3036) is hinged to the arc-shaped shell (3041).

4. The device for rapidly identifying the closing status of a disconnector at night according to claim 1, characterized in that: The snap-fit ​​fastener (307) includes rod grooves (3071) symmetrically formed inside the rotating roller (3044). The rod grooves (3071) are horizontally arranged, with both ends of the rod grooves (3071) facing the arc-shaped housing (3041) and the opening end of the mounting cavity (3031), respectively. A limiting groove (3072) is formed on the rod groove (3071), and a limiting block (3073) is movably installed inside the limiting groove (3072). The inner side of the rod groove (3071) A locking rod (3074) is provided, which is fixedly connected to a limiting block (3073). A second spring (3075) is fixedly installed on the side of the limiting block (3073) near the arc-shaped shell (3041). One end of the second spring (3075) is fixedly connected to the inner wall of the end of the limiting groove (3072) near the arc-shaped shell (3041). An end plate (3076) is installed on the end of the locking rod (3074) away from the arc-shaped shell (3041).

5. The device for rapidly identifying the closing status of a disconnector at night according to claim 1, characterized in that: Two clamping cylinders (308) are symmetrically installed on the inner bottom wall of the mounting cavity (3031), and a negative pressure fixing component (309) is provided above the clamping cylinders (308).

6. The device for rapidly identifying the closing status of a disconnector at night according to claim 5, characterized in that: The negative pressure fixing component (309) includes an L-shaped tube (3094) symmetrically installed on the top of the moving contact seat body (301). The L-shaped tube (3094) consists of a horizontal pipe and a vertical pipe. A vertical plate (3092) is installed at the end of the horizontal pipe. The vertical plate (3092) is fixedly installed on the top of the moving contact seat body (301). The vertical plate (3092) is located on the side of the upper connecting plate (3033) away from the second electrical plate (302). Suction cups (3093) are symmetrically installed on the side of the vertical plate (3092) close to the upper connecting plate (3033). The two suction cups (3093) are respectively connected to the two L-shaped tubes (3094). The longitudinal pipes of the two L-shaped tubes (3094) are respectively set above the two clamps (308).

7. The device for rapidly identifying the closing status of a disconnector at night according to claim 6, characterized in that: A piston (3096) is movably installed inside the longitudinal pipe of the L-shaped tube (3094). A limit plate (3095) is provided below the piston (3096). The limit plate (3095) is fixedly installed on the inner wall of the longitudinal pipe. A third spring (3097) is installed between the limit plate (3095) and the piston (3096). A bottom rod (3098) is installed at the bottom end of the piston (3096). The bottom end of the bottom rod (3098) extends into the interior of the mounting cavity (3031). A hanging ring (3099) is installed at the bottom end of the bottom rod (3098). A hook (3091) is installed on the end plate (3076).

8. The device for rapidly identifying the closing status of a disconnector at night according to claim 1, characterized in that: The switch component (203) includes two switch contact pieces (2031). An insulating connecting plate (2032) is bolted to one end of the switch contact piece (2031) near the first connecting plate (202). An insulating rubber shaft is installed between the two insulating connecting plates (2032). The insulating rubber shaft is rotatably connected to the first connecting plate (202). A pull ring (2033) is bolted between the two switch contact pieces (2031). The outer surface of the pull ring (2033) is coated with red reflective paint. An insulating side plate (2034) is provided on the side of the two switch contact pieces (2031) that is far away from each other.

9. The detection method of the device for rapidly identifying the closing status of a disconnector at night according to any one of claims 1-8, characterized in that... The detection method is as follows: S1. Closing the circuit: Rotate the knife switch contact piece (2031) downwards so that the two knife switch contact pieces (2031) move to both sides of the second contact plate (302); S2, Indication: The switch contact plate (2031) rotates downward to push the upper connecting plate (3033) to move downward, thereby pushing the arc-shaped housing (3041) to move. After the rotating roller (3044) rotates, the second indicator plate (3046) on the rotating roller (3044) is aligned with the first indicator plate (3043). Both the second indicator plate (3046) and the first indicator plate (3043) are coated with green reflective paint for easy observation by staff.

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