Novel centrally installed switchgear breaker stroke induction device

Abstract

The utility model relates to the technical field of circuit breaker stroke induction, and provides a novel centrally installed switchgear circuit breaker stroke induction device, which comprises a cabinet body provided with a mounting cavity; the circuit breaker is arranged in the mounting cavity in a sliding manner; the first inductive switch is arranged in the mounting cavity; and the second inductive switch is arranged on the circuit breaker, and after the circuit breaker slides, the second inductive switch is driven to be in contact with or not to be in contact with the first inductive switch. By means of the technical scheme, the problems that in the prior art, installation is complex, and precision is limited are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker travel induction, and in particular to a novel center cabinet circuit breaker travel induction device. Background Art

[0002] The center cabinet circuit breaker travel sensing device is a device used to monitor the position of the circuit breaker induction switch. In the power system, the circuit breaker is an important induction switch device used to control the on and off of the circuit and protect the circuit from faults such as overload or short circuit. In order to ensure the safe and stable operation of the power system, it is necessary to monitor the position status of the circuit breaker in real time to prevent accidents caused by misoperation of the circuit breaker.

[0003] The disadvantages of the center cabinet circuit breaker travel sensing device in the prior art are as follows: High price: The price of the center cabinet circuit breaker travel sensing device is relatively high, which increases the user's purchase cost. Complex installation: The device requires professional technicians to install and debug, otherwise it may affect its normal operation and even cause safety accidents. Difficult maintenance: Due to the complex structure of the device, it is difficult to maintain and requires regular inspection and maintenance, which increases the cost of use. Accuracy problem: Although the center cabinet circuit breaker travel sensing device can improve the switching performance of the circuit breaker, its accuracy is limited. Utility Model Content

[0004] The utility model provides a novel stroke sensing device for a central cabinet circuit breaker, which solves the problems of complex installation and limited accuracy in the related technology.

[0005] The technical solution of the utility model is as follows:

[0006] A novel center cabinet circuit breaker travel sensing device, comprising:

[0007] A cabinet having a mounting cavity;

[0008] A circuit breaker is slidably disposed in the mounting cavity;

[0009] A first induction switch is arranged in the installation cavity;

[0010] The second induction switch is arranged on the circuit breaker, and after the circuit breaker slides, the second induction switch is driven to contact or not contact the first induction switch.

[0011] As a further technical solution, the first induction switch includes:

[0012] A first bracket, disposed in the mounting cavity;

[0013] The first contact is arranged on the first bracket.

[0014] As a further technical solution, the first bracket has a first folded edge and a second folded edge, and there is an inclination angle α between the first folded edge and the second folded edge, and the inclination angle α is a right angle. The first folded edge is arranged in the installation cavity, and the first contact is arranged on the second folded edge.

[0015] As a further technical solution, the second induction switch is a second bracket, the second induction switch is a Z-shaped bracket, one end of the second induction switch is arranged on the circuit breaker, and the other end is used to abut against the first contact.

[0016] As a further technical solution, it also includes:

[0017] A cabinet door is rotatably arranged on the cabinet body, and the cabinet door has a clamping protrusion;

[0018] The clamping piece is arranged on the cabinet body and has a clamping gap. After the cabinet door rotates, the clamping protrusion is clamped into or out of the clamping gap.

[0019] As a further technical solution, the clamping member includes:

[0020] A fixing block is arranged on the cabinet, and the clamping gap is located on the fixing block;

[0021] A sliding block, slidably disposed in the clamping gap;

[0022] An elastic member, one end of which is arranged in the clamping gap, and the other end of which is arranged on the sliding block, and the elastic member is used to provide a force for the sliding block to extend out of the clamping gap.

[0023] As a further technical solution, there is an avoidance gap between the sliding block and the cabinet, and the snap-in protrusion is used to snap-in in the avoidance gap.

[0024] As a further technical solution, slideways are provided on both sides of the installation cavity, and the circuit breaker is slidably arranged in the slideways.

[0025] As a further technical solution, it also includes:

[0026] A stationary contact, arranged on the circuit breaker;

[0027] The moving contact is arranged on the voltage transformer, and after the circuit breaker slides, the static contact is driven to abut against the moving contact.

[0028] The working principle and beneficial effects of the utility model are:

[0029] In the utility model, in order to solve the problems of complex installation and limited precision in the related technology, the cabinet as the main body of the device is made of high-strength metal material with good mechanical strength and corrosion resistance. An installation cavity is provided in the cabinet for installing the circuit breaker and other electrical components. The circuit breaker is the core component of the central cabinet and is slidably arranged in the installation cavity of the cabinet. The circuit breaker is closely matched with the installation cavity to ensure that it can slide smoothly and accurately in the cabinet. The circuit breaker has the functions of breaking and closing the circuit, as well as overload and short-circuit protection. The first induction switch is fixedly installed in the installation cavity of the cabinet. The second induction switch is installed on the circuit breaker and moves synchronously with the sliding of the circuit breaker. The type of the second induction switch matches the first induction switch to ensure that an electrical signal can be effectively generated when the two are in contact. The position design of the second induction switch ensures that when the circuit breaker slides to a specific position, it can just contact the first induction switch. Working principle and effect: When the circuit breaker slides in the cabinet, the second induction switch installed thereon moves accordingly. When the circuit breaker reaches the preset opening or closing position, the second induction switch contacts the first induction switch fixed in the installation cavity, triggers the induction device, and generates a corresponding signal. These signals can be used to indicate the state of the circuit breaker (such as opening, closing, intermediate position, etc.), and are transmitted to the control unit or monitoring system to realize the functions of real-time monitoring, fault alarm, remote control, etc. of the circuit breaker state. The new central cabinet circuit breaker stroke sensing device of this embodiment has the following advantages: 1. Accurate sensing: Through the contact or non-contact of the first induction switch and the second induction switch, the stroke position of the circuit breaker is accurately sensed to ensure the accuracy and reliability of the circuit breaker action. 2. Real-time monitoring: The stroke sensing device can output the circuit breaker status signal in real time, which is convenient for the monitoring system to perform data analysis, fault diagnosis and remote control, and improve the automation management level of the power system. 3. Easy to integrate: The device has a compact structure, high integration with the central cabinet circuit breaker, simple installation and debugging, easy to integrate into the existing power automation system, convenient processing, beautiful appearance, easy to install, and has a certain economic effect. In summary, the novel center cabinet circuit breaker travel sensing device of this embodiment can accurately and in real time sense the travel position of the circuit breaker, providing reliable data support for monitoring, protection and remote control of the power system, and has high practical value and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 for Figure 1 A magnified schematic diagram of point A;

[0033] Figure 3 This is a schematic diagram of the second switch structure of the utility model;

[0034] Figure 4 This is a partial cross-sectional structural diagram of the cabinet door of the utility model;

[0035] Figure 5 for Figure 4 An enlarged schematic diagram of point B;

[0036] Figure 6 for Figure 4 Schematic diagram of the structure without section view;

[0037] In the figure: 100, cabinet body, 110, installation cavity, 200, circuit breaker, 300, first induction switch, 400, second induction switch, 310, first bracket, 320, first contact, 330, first folding edge, 340, second folding edge, 500, cabinet door, 600, snap-in piece, 510, snap-in protrusion, 610, snap-in gap, 620, fixed block, 630, sliding block, 640, elastic piece, 650, avoidance gap, 120, slideway, 700, static contact, 900, moving contact. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0039] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] Reference Figure 1 to Figure 6, which is the first embodiment of the utility model, proposes

[0042] A novel 200 stroke sensing device for a center cabinet circuit breaker, comprising:

[0043] The cabinet 100 has a mounting cavity 110;

[0044] The circuit breaker 200 is slidably disposed in the mounting cavity 110;

[0045] The first induction switch 300 is disposed in the mounting cavity 110;

[0046] The second induction switch 400 is disposed on the circuit breaker 200. After the circuit breaker 200 slides, the second induction switch 400 is driven to contact or not contact the first induction switch 300.

[0047] In this embodiment, in order to solve the problems of complex installation and limited precision in the related art, the cabinet 100 is made of high-strength metal material as the main body of the device, and has good mechanical strength and anti-corrosion performance. An installation cavity 110 is provided in the cabinet 100 for installing the circuit breaker 200 and other electrical components. The circuit breaker 200 is the core component of the central cabinet and is slidably arranged in the installation cavity 110 of the cabinet 100. The circuit breaker 200 is closely matched with the installation cavity 110 to ensure that it can slide smoothly and accurately in the cabinet 100. The circuit breaker 200 has the functions of breaking and closing the circuit, as well as overload and short-circuit protection. The first induction switch 300 is fixedly installed in the installation cavity 110 of the cabinet 100. The second induction switch 400 is installed on the circuit breaker 200 and moves synchronously with the sliding of the circuit breaker 200. The type of the second induction switch 400 matches the first induction switch 300 to ensure that the two can effectively generate electrical signals when they are in contact. The position design of the second induction switch 400 ensures that when the circuit breaker 200 slides to a specific position, it can just contact the first induction switch 300. Working principle and effect: When the circuit breaker 200 slides in the cabinet 100, the second induction switch 400 installed thereon moves accordingly. When the circuit breaker 200 reaches the preset opening or closing position, the second induction switch 400 contacts the first induction switch 300 fixed in the installation cavity 110, triggers the induction device, and generates corresponding signals. These signals can be used to indicate the state of the circuit breaker 200 (such as opening, closing, intermediate position, etc.), and are transmitted to the control unit or monitoring system to realize the functions of real-time monitoring, fault alarm, remote control, etc. of the state of the circuit breaker 200. The new stroke induction device of the central cabinet circuit breaker 200 of this embodiment has the following advantages: 1. Accurate induction: Through the contact or non-contact of the first induction switch 300 and the second induction switch 400, the stroke position of the circuit breaker 200 is accurately sensed to ensure the accuracy and reliability of the action of the circuit breaker 200. 2. Real-time monitoring: The travel sensing device can output the status signal of the circuit breaker 200 in real time, which is convenient for the monitoring system to perform data analysis, fault diagnosis and remote control, and improve the level of automation management of the power system. 3. Easy to integrate: The device has a compact structure, a high degree of integration with the center cabinet circuit breaker 200, simple installation and debugging, and is easy to integrate into the existing power automation system. It is easy to process, has a beautiful appearance, is easy to install, and has a certain economic effect. In summary, the new center cabinet circuit breaker 200 travel sensing device of this embodiment can accurately and in real time sense the travel position of the circuit breaker 200, provides reliable data support for the monitoring, protection and remote control of the power system, and has high practical value and market prospects.

[0048] Further, the first induction switch 300 includes:

[0049] A first bracket 310 is disposed in the mounting cavity 110;

[0050] The first contact 320 is disposed on the first bracket 310 .

[0051] The first bracket 310 has a first folded edge 330 and a second folded edge 340 . There is an inclination angle α between the first folded edge 330 and the second folded edge 340 . The inclination angle α is a right angle. The first folded edge 330 is disposed in the mounting cavity 110 , and the first contact 320 is disposed on the second folded edge 340 .

[0052] In this embodiment, the first bracket 310 is used as a fixed base of the first inductive switch 300, and is made of metal or other insulating materials, and is firmly arranged in the installation cavity 110 of the cabinet 100. The first bracket 310 is connected to the cabinet 100 by bolts, snaps or welding, etc., to ensure that it is stable and immobile during use. The first contact 320 is a key component of the inductive switch, which is arranged at a specific position of the first bracket 310 and is responsible for contacting the second inductive switch 400 to trigger the switch action. The first contact 320 is made of a material with good conductivity, wear resistance and corrosion resistance to ensure stable electrical performance under long-term use. Structural details of the first bracket 310: First folding edge 330: One end of the first bracket 310 is designed as the first folding edge 330, which is close to the inner wall of the installation cavity 110. Through this structure, the first bracket 310 is firmly embedded in the installation cavity 110, ensuring that it is accurately positioned and is not affected by the vibration generated when the circuit breaker 200 slides. Second folding edge 340: The other end opposite to the first folding edge 330 is the second folding edge 340, and an inclination angle α is formed between the two. The design of the inclination angle α takes into account the sliding path of the circuit breaker 200, the installation position of the second induction switch 400 on the circuit breaker 200, and the optimal angle of contact of the contacts, so as to ensure that when the circuit breaker 200 is in a specific position, the second induction switch 400 can accurately and stably contact the first contact 320. Working principle and effect: When the circuit breaker 200 slides in the cabinet 100, the second induction switch 400 thereon gradually approaches the first contact 320 along the movement trajectory of the circuit breaker 200. When the circuit breaker 200 reaches the preset position, the second induction switch 400 contacts the first contact 320 obliquely arranged on the second folded edge 340 of the first bracket 310, avoiding hard collision and ensuring the stability of the contact point contact. At this time, the circuit between the first contact 320 and the second induction switch 400 is connected, generating an electrical signal, indicating that the circuit breaker 200 has reached the predetermined position. The structure of the first induction switch 300 in this embodiment has the following characteristics: Precise positioning: The first folded edge 330 is tightly combined with the inner wall of the installation cavity 110 to ensure the precise installation position of the first bracket 310 and the first contact 320, which is conducive to the precise sensing of the stroke of the circuit breaker 200. Smooth contact: The inclination angle α is a right angle, which not only realizes the fixation of the first bracket, but also enables the first contact 320 to have an installation position, that is, it provides convenience for the installation of the first contact 320. The design makes the second induction switch 400 smoothly transition when in contact with the first contact 320, thereby improving the contact reliability. Strong adaptability: By adjusting the inclination angle α, it can adapt to the sliding trajectory of different types of circuit breakers 200 and the position of the second induction switch 400, thereby enhancing the versatility and adaptability of the device. This solution realizes the precise and smooth sensing of the stroke of the circuit breaker 200 through the reasonably designed first bracket 310 and the first contact 320, especially the introduction of the inclination angle α, thereby improving the performance and service life of the entire sensing device.

[0053] Furthermore, the second induction switch 400 is a second bracket, and the second induction switch 400 is a Z-shaped bracket. One end of the second induction switch 400 is disposed on the circuit breaker 200 , and the other end is used to abut against the first contact 320 .

[0054] In this embodiment, the second induction switch 400 described herein adopts the second bracket form, specifically a Z-shaped frame structure. Due to its unique shape, the Z-shaped frame can slide with the circuit breaker 200, even if the circuit breaker 200 or the cabinet 100 is tilted, it can contact the first contact 320, thereby sensing the stroke state of the circuit breaker 200. The Z-shaped frame is composed of three straight segments, arranged in a Z shape. This structural design allows the Z-shaped frame to remain fixed on the circuit breaker 200 during the sliding process of the circuit breaker 200, and the other end slides along the inclined surface of the first contact 320 as the circuit breaker 200 moves. When the circuit breaker 200 reaches the preset position, the free end of the Z-shaped frame accurately contacts the first contact 320, forming an effective electrical circuit, and sending a position signal of the circuit breaker 200. One end of the Z-shaped frame is firmly mounted at an appropriate position of the circuit breaker 200 by a fastener (such as a screw, a buckle, etc.), ensuring that it slides smoothly with the circuit breaker 200. The material of the Z-shaped frame should have good electrical properties and a certain mechanical strength to ensure its stability and reliability during long-term use. The middle connecting section of the Z-shaped frame is arranged along the sliding direction of the circuit breaker 200, and the other end contacts the first contact 320 after sliding. The middle section can avoid the first contact 320 during the sliding process. After sliding to the position, the middle section is located below the first contact 320, saving space. Working principle and effect: As the circuit breaker 200 slides in the cabinet 100, the Z-shaped frame moves with the circuit breaker 200 as the second induction switch 400. When the circuit breaker 200 reaches the preset opening or closing position, the free end of the Z-shaped frame (that is, the end not fixed on the circuit breaker 200) just slides along the inclined surface of the first contact 320 to form an electrical circuit, trigger the switch action, and generate a corresponding electrical signal. These electrical signals can be used to indicate the status of the circuit breaker 200 (such as open, closed, intermediate position, etc.), and transmitted to the control unit or monitoring system to realize the functions of real-time monitoring, fault alarm, remote control, etc. of the status of the circuit breaker 200. The Z-frame structure of this embodiment has the following advantages as the second sensing switch 400: 1. Compact structure: The Z-frame structure is simple, occupies a small space, and is easy to arrange and install in the limited space of the circuit breaker 200. 2. Strong adaptability: The Z-shaped design of the Z-frame enables it to flexibly adapt to the changes in the sliding path of the circuit breaker 200, ensuring that the stroke position of the circuit breaker 200 can be accurately sensed under various working conditions. Through the ingenious design of the Z-frame, this solution realizes accurate and stable sensing of the stroke of the circuit breaker 200, and improves the performance and service life of the entire sensing device.

[0055] Furthermore, it also includes:

[0056] The cabinet door 500 is rotatably disposed on the cabinet body 100, and the cabinet door 500 has a snap-fit ​​protrusion 510;

[0057] The clamping member 600 is disposed on the cabinet body 100 and has a clamping gap 610 . After the cabinet door 500 rotates, the clamping protrusion 510 is clamped into or out of the clamping gap 610 .

[0058] The card connector 600 includes:

[0059] A fixing block 620 is disposed on the cabinet 100 , and the clamping gap 610 is located on the fixing block 620 ;

[0060] A sliding block 630 is slidably disposed in the clamping gap 610;

[0061] The elastic member 640 has one end disposed in the clamping gap 610 and the other end disposed on the sliding block 630 . The elastic member 640 is used to provide a force for the sliding block 630 to extend out of the clamping gap 610 .

[0062] An avoidance gap 650 is defined between the sliding block 630 and the cabinet 100 , and the engaging protrusion 510 is used to be engaged in the avoidance gap 650 .

[0063] In this embodiment, the cabinet door 500 is arranged on the cabinet body 100, and the cabinet door 500 is opened and closed by a rotating shaft or other rotating support structure. The cabinet door 500 edge is designed with a clamping protrusion 510, the shape and size of the protrusion match the clamping member 600, and is used to achieve accurate and stable matching connection with the clamping member 600 to ensure the locked state after the cabinet door 500 is closed. The clamping member 600 is fixedly installed on the cabinet body 100, and its main function is to receive and lock the clamping protrusion 510 on the cabinet door 500. The fixed block 620 is directly welded or bolted to the appropriate position of the cabinet body 100, and a clamping gap 610 is provided thereon, and the sliding block 630 is embedded in the clamping gap 610 of the fixed block 620, and can slide smoothly in the gap. When the cabinet door 500 is closed, the clamping protrusion 510 can drive the sliding block 630 to slide, and is stuck in the avoidance gap 650 to form a stable clamping. One end of the elastic member 640 is fixed inside the snap-fit ​​gap 610 (usually connected to the fixed block 620 through a fixing seat or directly), and the other end acts on the sliding block 630 to provide continuous elastic force, so that the sliding block 630 always maintains a tendency to extend outward from the snap-fit ​​gap 610. This design ensures that the sliding block 630 can automatically extend even without the action of external force. An avoidance gap 650 is reserved between the sliding block 630 and the cabinet body 100. When the cabinet door 500 is in a closed state, the snap-fit ​​protrusion 510 is located in the avoidance gap 650. When the cabinet door 500 is opened, the snap-fit ​​protrusion 510 gradually approaches the sliding block 630. Under the action of the elastic member 640, the sliding block 630 is pressed back into the snap-fit ​​gap 610 until the snap-fit ​​protrusion 510 completely leaves the avoidance gap 650. The cabinet door 500 locking mechanism provided in this embodiment realizes convenient opening and closing and reliable locking of the cabinet door 500 through the precise cooperation between the clamping protrusion 510 and the clamping member 600, combined with the automatic reset function of the elastic member 640. This design can not only prevent the cabinet door 500 from accidentally breaking open and causing parts to fly out and endanger personal safety, but also can recycle the clamping member 600. The elastic member 640 has a certain elastic force, and only with sufficient impact force can the cabinet door 500 be pushed open.

[0064] Furthermore, slideways 120 are provided on both sides of the installation cavity 110 , and the circuit breaker 200 is slidably disposed in the slideways 120 .

[0065] Also includes:

[0066] The static contact 700 is arranged on the circuit breaker 200;

[0067] The moving contact 900 is arranged on the voltage transformer 800 . After the circuit breaker 200 slides, the stationary contact 700 and the moving contact 900 are driven to abut against each other.

[0068] In this embodiment, a mounting cavity 110 is provided in the cabinet 100 for accommodating the circuit breaker 200. Slideways 120 are provided on both sides of the mounting cavity 110. The shape and size of the slideways 120 match the sliders or rollers on both sides of the circuit breaker 200 to ensure that the circuit breaker 200 can slide smoothly and stably along the slideways 120. The material of the slideway 120 is usually made of wear-resistant and corrosion-resistant metal materials (such as stainless steel or aluminum alloy) to ensure good performance under long-term use. The inner wall of the slideway 120 is processed with precise guide grooves or rollers to ensure that the circuit breaker 200 maintains linear motion during the sliding process to prevent deviation or jamming. As the core electrical component of the central cabinet, the circuit breaker 200 cooperates with the slideway 120 on both sides to achieve sliding along the slideway 120 in the mounting cavity 110. The circuit breaker 200 contains an opening and closing mechanism inside, which can drive the moving contact 900 to contact or separate with the static contact 700 under the operation instruction to achieve the connection and disconnection of the circuit. The static contact 700 is fixedly mounted on the cabinet 100 and is located at the end position of the sliding path of the circuit breaker 200. The static contact 700 is made of highly conductive and high temperature resistant material, and its shape and size match the moving contact 900 to ensure that a good electrical contact surface can be formed when the two are in contact. The material and shape of the moving contact 900 are the same as those of the static contact 700 to ensure that a good electrical contact surface is formed when the two are in contact. When the circuit breaker 200 slides to the closed position, the moving contact 900 is driven by the internal breaking mechanism of the circuit breaker 200 to closely contact the static contact 700 to achieve the connection of the circuit; conversely, when the circuit breaker 200 slides to the disconnecting position, the moving contact 900 is separated from the static contact 700 to disconnect the circuit. The central cabinet structure provided in this embodiment realizes the sliding installation of the circuit breaker 200 through the slide 120, making the breaking operation of the circuit breaker 200 more convenient and accurate.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A novel travel sensing device for a central cabinet circuit breaker, characterized in that: include: The cabinet (100) has a mounting cavity (110); A circuit breaker (200) slidably disposed in the installation cavity (110); A first induction switch (300) is arranged in the installation cavity (110); The second induction switch (400) is arranged on the circuit breaker (200), and after the circuit breaker (200) slides, it drives the second induction switch (400) to contact or not contact the first induction switch (300).

2. A novel center cabinet circuit breaker travel sensing device according to claim 1, characterized in that: The first induction switch (300) comprises: A first bracket (310) is arranged in the installation cavity (110); The first contact (320) is arranged on the first bracket (310).

3. A novel center cabinet circuit breaker travel sensing device according to claim 2, characterized in that: The first bracket (310) has a first folded edge (330) and a second folded edge (340), an inclination angle α is provided between the first folded edge (330) and the second folded edge (340), the inclination angle α is a right angle, the first folded edge (330) is arranged in the installation cavity (110), and the first contact (320) is arranged on the second folded edge (340).

4. A novel center cabinet circuit breaker travel sensing device according to claim 2, characterized in that: The second induction switch (400) is a second bracket, the second induction switch (400) is a Z-shaped bracket, one end of the second induction switch (400) is arranged on the circuit breaker (200), and the other end is used to abut against the first contact (320).

5. The novel center cabinet circuit breaker travel sensing device according to claim 1 is characterized in that: Also includes: A cabinet door (500) is rotatably disposed on the cabinet body (100), and the cabinet door (500) has a clamping protrusion (510); The clamping member (600) is arranged on the cabinet body (100) and has a clamping gap (610). After the cabinet door (500) rotates, the clamping protrusion (510) is clamped into or out of the clamping gap (610).

6. A novel center cabinet circuit breaker travel sensing device according to claim 5, characterized in that: The clamping member (600) comprises: A fixing block (620) is arranged on the cabinet (100), and the clamping gap (610) is located on the fixing block (620); A sliding block (630) slidably disposed in the clamping gap (610); An elastic member (640) has one end disposed in the clamping gap (610) and the other end disposed on the sliding block (630), the elastic member (640) being used to provide a force for the sliding block (630) to extend out of the clamping gap (610).

7. A novel center cabinet circuit breaker travel sensing device according to claim 6, characterized in that: An escape gap (650) is provided between the sliding block (630) and the cabinet body (100), and the locking protrusion (510) is used to be locked in the escape gap (650).

8. A novel center cabinet circuit breaker travel sensing device according to claim 1, characterized in that: Slideways (120) are provided on both sides of the installation cavity (110), and the circuit breaker (200) is slidably arranged in the slideways (120).

9. A novel center cabinet circuit breaker travel sensing device according to claim 1, characterized in that: Also includes: A stationary contact (700) arranged on the circuit breaker (200); The moving contact (900) is arranged on the voltage transformer (800), and after the circuit breaker (200) slides, it drives the stationary contact (700) and the moving contact (900) to abut against each other.

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