Travel switch capacity increasing structure of longitudinal rotation isolation circuit breaker

Abstract

The utility model relates to a travel switch capacity increasing structure of a longitudinal rotation isolation circuit breaker, which comprises a first travel switch, a screw rod assembly, a sliding assembly, a mounting frame, a capacity increasing travel switch, a trigger arm and a capacity increasing support, and is characterized in that the screw rod assembly is mounted on the mounting frame, and the sliding assembly is slidably mounted on the screw rod assembly; the capacity-increasing support is fixed to the installation frame, the capacity-increasing travel switch is fixed to the capacity-increasing support, one side of the trigger arm is connected with the trigger end of the capacity-increasing travel switch, the other end of the trigger arm extends into the sliding track of the sliding assembly, the sliding assembly comprises a first trigger part and a second trigger part, and the sliding assembly slides along the screw assembly. And the longitudinal rotation isolation circuit breaker enters a working state, so that the first trigger part and the first travel switch are triggered, and the second trigger part synchronously triggers the capacity-increasing travel switch through the trigger arm. According to the longitudinal rotation isolation circuit breaker, the capacity of the travel switch in the working state is increased, and the longitudinal rotation isolation circuit breaker and the original travel switch can be synchronously triggered.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, and in particular to a limit switch capacity enhancement structure for a longitudinal rotary isolating circuit breaker. Background Technology

[0002] With the rapid development of power systems, higher requirements are being placed on the safety, reliability, and intelligence of equipment. Rotary swing disconnectors, as important power isolation and operation devices, are widely used in substations, distribution stations, and rail transit. To indicate the isolation or operating status of the rotary swing disconnector, limit switches are often installed at corresponding positions to sense the isolation or operating status, providing a control and status interface for this equipment and related equipment. The limit switch, as a key component for detecting the position status of the disconnector, directly affects the operational reliability and safety of the equipment. With the construction of smart grids and the increase in automated control, the capacity of limit switches is gradually becoming a bottleneck restricting the improvement of equipment performance. Especially in complex intelligent control environments, insufficient limit switch capacity can easily lead to failures in other indirect status judgment devices such as electrical contactors, affecting the normal operation of the equipment and the stability of the power grid, making it difficult to meet the needs of modern power grid systems for intelligent and automated equipment. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems and provide a limit switch capacity enhancement structure for a rotary isolation circuit breaker. The rotary isolation circuit breaker of this application enhances the capacity of the limit switch in the working state and can be triggered synchronously with the original limit switch.

[0004] A limit switch capacity expansion structure for a rotary disconnect circuit breaker includes a first limit switch, a screw assembly, a sliding assembly, a mounting frame, a capacity expansion limit switch, a trigger arm, and a capacity expansion bracket. The screw assembly is mounted on the mounting frame, the sliding assembly is slidably mounted on the screw assembly, the capacity expansion bracket is fixed to its mounting frame, and the capacity expansion limit switch is fixed to the capacity expansion bracket. One side of the trigger arm is connected to the trigger terminal of the capacity expansion limit switch, and the other end extends into the sliding trajectory of the sliding assembly. The sliding assembly includes a first trigger part and a second trigger part. When the sliding assembly slides along the screw assembly, the rotary disconnect circuit breaker enters the working state, triggering the first trigger part and the first limit switch, and simultaneously triggering the capacity expansion limit switch via the trigger arm.

[0005] According to the limit switch capacity expansion structure of the longitudinal rotary isolating circuit breaker of this application, the sliding component is slidably mounted on the screw assembly. When the screw assembly drives the sliding component to move to one side, the longitudinal rotary isolating circuit breaker can enter the working state. The first limit switch is the original forming switch. By setting the first limit switch to trigger the sliding component when entering the working state, the longitudinal rotary isolating circuit breaker can obtain the position information of entering the working state. The capacity expansion limit switch and the trigger arm are mounted on one side of the screw assembly through the capacity expansion bracket, and the trigger arm is extended into the sliding trajectory of the sliding component. Thus, the sliding component abuts against the trigger arm while triggering the first limit switch, thereby synchronously triggering the capacity expansion limit switch. The capacity expansion limit switch can facilitate the increase of power application system capacity, technology upgrade and intelligent transformation, and improvement of safety and reliability.

[0006] Furthermore, the capacity-increasing limit switch also includes a fixed end, and the capacity-increasing bracket includes an elongated mounting hole for the fixed end to be adjusted and mounted on the capacity-increasing bracket. The adjustable position of the fixed end of the capacity-increasing limit switch makes installation more convenient and allows for adjustment of the installed limit switch to ensure accurate synchronous triggering with the first limit switch.

[0007] Furthermore, a lever shaft is provided on one side of the capacity expansion bracket, and the middle part of the trigger arm is rotatably sleeved on the lever shaft. One end of the trigger arm is hinged to the trigger end of the capacity expansion limit switch, and the other end of the trigger arm extends into the sliding trajectory of the sliding assembly. Under the fulcrum of the lever shaft, the trigger arm, after being triggered by the sliding assembly, can push the trigger end of the capacity expansion limit switch, thus triggering it.

[0008] Furthermore, the capacity-enhancing bracket is provided with a movable hole, and the capacity-enhancing limit switch is mounted on the capacity-enhancing bracket on the other side of the lever shaft. The trigger arm passes through the capacity-enhancing bracket via the movable hole. The movable hole provides movement space for the trigger arm and provides it with certain support.

[0009] Furthermore, the capacity-enhancing bracket includes a horizontal bracket and a vertical bracket. The vertical bracket is fixed to the horizontal bracket, and a first extension plate extends upward from the horizontal bracket to the vertical bracket. The lever shaft is mounted on the vertical bracket and the first extension plate. The horizontal and vertical brackets facilitate the installation of the lever shaft.

[0010] Furthermore, the sliding assembly includes a slider and a first trigger plate. The slider is slidably mounted on the screw assembly, the first trigger plate is fixed on the slider, the first limit switch is disposed at one end of the sliding assembly, the first trigger part is the first trigger plate, the second trigger part is the slider, and the trigger arm is disposed on the sliding trajectory of the slider.

[0011] Furthermore, it also includes a second limit switch. The sliding assembly further includes a second trigger piece, which is fixed on the slider. When the longitudinal rotation of the isolation circuit breaker enters the isolation state, the second trigger piece triggers the second limit switch.

[0012] Furthermore, the screw assembly includes a bearing block, a guide rod, a screw, and a first transmission mechanism. The bearing block is fixed on the mounting frame, the screw is rotatably mounted on the bearing block, the first transmission mechanism is connected to the screw, and the guide rod is fixed on the bearing block along the direction of the screw. The sliding assembly is slidably mounted on the screw and the guide rod.

[0013] Furthermore, it also includes a second transmission mechanism, which is connected to the first transmission mechanism, and the second transmission mechanism is provided with an operating shaft.

[0014] Furthermore, it also includes an operating tool, which is connected to the operating shaft and drives the screw to rotate through a second transmission mechanism and a first transmission structure. Attached Figure Description

[0015] Figure 1 This is a perspective view of the limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker of this utility model.

[0016] Figure 2 This is an exploded view of the limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker of this utility model.

[0017] Figure 3 This is an exploded view of the sliding component of this utility model.

[0018] Figure 4 This is a perspective view of the sliding component of this utility model when it is slid into the working state.

[0019] Figure 5 This is an exploded view of the capacity-enhancing limit switch of this utility model.

[0020] Figure 6 This is a perspective view of the capacity-enhancing limit switch of this utility model. Detailed Implementation

[0021] The accompanying drawings illustrate a limit switch capacity enhancement structure for a longitudinal rotary isolating circuit breaker according to this utility model.

[0022] like Figures 1 to 6The diagram illustrates a limit switch capacity expansion structure for a rotary disconnect circuit breaker, comprising a first limit switch 1, a screw assembly 2, a sliding assembly 3, a mounting frame 4, a capacity expansion limit switch 5, a trigger arm 6, and a capacity expansion bracket 7. The screw assembly 2 is mounted on the mounting frame 4, and the sliding assembly 3 is slidably mounted on the screw assembly 2. The rotary disconnect circuit breaker includes an operating state and an isolation state. By sliding the sliding assembly 3 to different positions on the screw assembly 2, the rotary disconnect circuit breaker enters the operating state and the isolation state. The capacity expansion bracket 7 is fixed to its mounting frame 4, and the capacity expansion limit switch 5 is fixed to the capacity expansion bracket 7. On the frame 7, one side of the trigger arm 6 is connected to the trigger end 52 of the capacity expansion limit switch 5, and the other end extends into the sliding trajectory of the sliding component 3. The sliding component 3 includes a first trigger part and a second trigger part. When the screw assembly 2 drives the sliding component 3 to move to a certain position to one side, the longitudinal rotary isolation circuit breaker can enter the working state, triggering the first trigger part and the first limit switch 1, and triggering the second trigger part synchronously through the trigger arm 6 to trigger the capacity expansion limit switch 5. The capacity expansion limit switch 5 can facilitate the increase of power application system capacity, technology upgrade and intelligent transformation, and improvement of safety and reliability.

[0023] like Figure 5 As shown, the capacity expansion limit switch 5 also includes a fixed end 52, and the capacity expansion bracket 7 includes an elongated mounting hole 711. The mounting hole 711 allows the fixed end 52 to be adjusted and mounted on the capacity expansion bracket 7. The elongated mounting hole 711 allows the fixed position of the fixed end 52 of the capacity expansion limit switch 5 to be adjusted back and forth along the long direction of the mounting hole 711. The trigger end 52 of the capacity expansion limit switch 5 is also set in the long direction of the mounting hole 711. Therefore, the installed capacity expansion limit switch 5 can be adjusted so that it can be accurately triggered synchronously with the first limit switch 1.

[0024] like Figures 4 to 6 As shown, a lever shaft 73 is provided on one side of the capacity expansion bracket 7. The middle part of the trigger arm 6 is rotatably sleeved on the lever shaft 73, so that the trigger arm 6 can form a lever with the lever shaft 73 as the fulcrum. One end of the trigger arm 6 is hinged to the trigger end 52 of the capacity expansion limit switch 5, and the other end of the trigger arm 6 extends into the sliding trajectory of the sliding component 3. Therefore, when the sliding component 3 slides to abut against the trigger arm 6, the trigger arm 6 can rotate around the lever shaft 73, transmitting the action to the trigger end 52, thereby triggering the capacity expansion limit switch 5. Figure 5 As shown, the lever shaft 73 and the hinge shaft 53 that is hinged to the trigger arm 6 and the trigger end 52 in this application can both be shaft structures formed by bolt and nut connection. The bolt and nut structure is simple and can be easily assembled.

[0025] like Figures 4 to 6As shown, the capacity expansion bracket 7 is provided with a movable hole 713. The capacity expansion limit switch 5 is installed on the capacity expansion bracket 7 on the other side of the lever shaft 73. The trigger arm 6 passes through the capacity expansion bracket 7 through the movable hole 713. The movable hole 713 provides the trigger arm 6 with a certain space for movement and provides it with a certain support. This layout structure allows the capacity expansion limit switch 5 to be installed on the other side of the sliding component 3, thereby avoiding the capacity expansion limit switch 5 from interfering with the sliding of the sliding component 3.

[0026] like Figures 4 to 6 As shown, the capacity expansion bracket 7 includes a horizontal bracket 71 and a vertical bracket 72. One side of the horizontal bracket 71 is fixed to the mounting frame 4, and the other side is fixed to the screw assembly 2. The vertical bracket 72 is fixed to the horizontal bracket 71 in the middle by a bolt and nut structure. The lower part of the vertical bracket 72 can also be fixed to the mounting frame 4 or other fasteners within the mounting frame 4 by a bolt and nut structure. A first extension plate 712 extends from the horizontal bracket 71 to the vertical bracket 72. A corresponding second extension plate 721 is provided on the vertical bracket 72. The lever shaft 73 is installed on the second extension plate 721 and the first extension plate 712. The position between the second extension plate 721 and the first extension plate 712 corresponds to the position of the movable hole 713, so that the trigger arm 6 is limited and installed on the lever shaft 73 between the second extension plate 721 and the first extension plate 712.

[0027] like Figures 1 to 4 As shown, the sliding assembly 3 includes a slider 31 and a first trigger piece 32. The slider 31 is slidably mounted on the screw assembly 2. The first trigger piece 32 is fixed on the slider 31. The first limit switch 1 is disposed at one end of the sliding assembly 3. The first trigger part is the first trigger piece 32, and the second trigger part is the slider 31. The trigger arm 6 is disposed on the sliding trajectory of the slider 31. When the slider 31 slides along the screw assembly 2 and contacts the trigger arm 6, it can push the trigger arm 6 to trigger the capacity expansion limit switch 5. By setting the distance, the first trigger piece 32 can trigger the first limit switch 1 and the capacity expansion limit switch 5 at the same time. The first trigger piece 32 is also installed using a long strip hole, so that the position of the first trigger piece 32 is adjustable, thereby facilitating synchronous triggering.

[0028] like Figure 2 As shown, it also includes a second limit switch 8, and the sliding assembly 3 also includes a second trigger piece 33, which is fixed on the slider 31. When the vertical rotation of the isolation circuit breaker enters the isolation state, the second trigger piece 33 triggers the second limit switch 8.

[0029] like Figures 1 to 3As shown, the screw assembly 2 includes a bearing block 23, a guide rod 22, a screw 21, and a first transmission mechanism 24. The bearing block 23 is fixed on the mounting frame 4. The screw 21 is rotatably mounted on the bearing block 23. There are at least two bearing blocks 23, which can stably rotate the screw 21 on the bearing block 23. The first transmission mechanism 24 is connected to the screw 21. The first transmission mechanism 24 includes a first bevel gear shaft 241. The first bevel gear shaft 241 is directly inserted into the screw 21 for transmission, or it is connected for transmission through a coupling or other transmission structure. The guide rod 22 is fixed on the bearing block 23 along the direction of the screw 21. The sliding assembly 3 is slidably mounted on the screw 21 and the guide rod 22. The screw 21 can slide back and forth on the screw 21 by rotating in the forward or reverse direction.

[0030] like Figure 1 and Figure 2 As shown, it also includes a second transmission mechanism 9, which includes a second bevel gear shaft 92. The second transmission mechanism 9 is connected to the first transmission mechanism 24, that is, the second bevel gear shaft 92 meshes with the bevel gear of the first bevel gear shaft 241. The second transmission mechanism 9 is provided with an operating shaft 91, which is located on one side of the second bevel gear shaft. It also includes an operating tool, which is connected to the operating shaft 91. The operating tool drives the screw 21 to rotate through the second transmission mechanism 9 and the first transmission structure, thereby driving the sliding component 3 to slide back and forth on the screw 21, so that the longitudinal rotary isolating circuit breaker enters the isolation state or the working state.

[0031] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A limit switch capacity enhancement structure for a rotary disconnector circuit breaker, characterized in that, The circuit breaker includes a first limit switch, a screw assembly, a sliding assembly, a mounting frame, a capacity-increasing limit switch, a trigger arm, and a capacity-increasing bracket. The screw assembly is mounted on the mounting frame, the sliding assembly is slidably mounted on the screw assembly, the capacity-increasing bracket is fixed to its mounting frame, and the capacity-increasing limit switch is fixed to the capacity-increasing bracket. One side of the trigger arm is connected to the trigger end of the capacity-increasing limit switch, and the other end extends into the sliding trajectory of the sliding assembly. The sliding assembly includes a first trigger part and a second trigger part. When the sliding assembly slides along the screw assembly, the longitudinal rotation isolation circuit breaker enters the working state, triggering the first trigger part and the first limit switch, and causing the second trigger part to synchronously trigger the capacity-increasing limit switch through the trigger arm.

2. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 1, characterized in that, The capacity-increasing limit switch also includes a fixed end, and the capacity-increasing bracket includes an elongated mounting hole for the fixed end to be adjustablely mounted on the capacity-increasing bracket.

3. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 1, characterized in that, The capacity expansion bracket has a lever shaft on one side, and the middle part of the trigger arm is rotatably sleeved on the lever shaft. One end of the trigger arm is hinged to the trigger end of the capacity expansion limit switch, and the other end of the trigger arm extends into the sliding trajectory of the sliding component.

4. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 3, characterized in that, The capacity expansion bracket is provided with a movable hole, the capacity expansion limit switch is installed on the capacity expansion bracket on the other side of the lever shaft, and the trigger arm passes through the movable hole through the capacity expansion bracket.

5. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 3 or 4, characterized in that, The capacity expansion bracket includes a horizontal bracket and a vertical bracket. The vertical bracket is fixed on the horizontal bracket. The horizontal bracket extends upwards from the vertical bracket with a first extension plate. The lever shaft is mounted on the vertical bracket and the first extension plate.

6. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 1, characterized in that, The sliding assembly includes a slider and a first trigger plate. The slider is slidably mounted on the screw assembly. The first trigger plate is fixed on the slider. The first limit switch is disposed at one end of the sliding assembly. The first trigger part is the first trigger plate, the second trigger part is the slider, and the trigger arm is disposed on the sliding trajectory of the slider.

7. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 6, characterized in that, It also includes a second limit switch, and the sliding assembly further includes a second trigger piece, which is fixed on the slider. When the longitudinal rotation of the isolation circuit breaker enters the isolation state, the second trigger piece triggers the second limit switch.

8. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 1, characterized in that, The screw assembly includes a bearing block, a guide rod, a screw, and a first transmission mechanism. The bearing block is fixed on the mounting frame, the screw is rotatably mounted on the bearing block, the first transmission mechanism is connected to the screw, and the guide rod is fixed on the bearing block along the direction of the screw. The sliding assembly is slidably mounted on the screw and the guide rod.

9. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 8, characterized in that, It also includes a second transmission mechanism, which is connected to the first transmission mechanism, and the second transmission mechanism is provided with an operating shaft.

10. The limit switch capacity enhancement structure of the longitudinal rotary isolating circuit breaker according to claim 9, characterized in that, It also includes an operating tool, which is connected to an operating shaft and drives the screw to rotate through a second transmission mechanism and a first transmission structure.

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