Grounding switch and isolating switch integrated operation interlocking mechanism and operation method

Abstract

The invention discloses a grounding switch and isolation switch integrated operation interlocking mechanism and an operation method, the grounding switch and isolation switch integrated operation interlocking mechanism comprises a cabinet body, a circuit breaker, an interlocking mechanism, a grounding assembly and an isolation assembly, when the circuit breaker is switched on, the interlocking mechanism cannot be operated, a door plate of the cabinet body cannot be opened, and the isolation assembly and the grounding assembly cannot be operated; and when the door plate is opened or not completely closed, the interlocking mechanism cannot be operated, the isolation assembly and the grounding assembly cannot be operated at the same time, and closing operation cannot be performed on the circuit breaker, so that electric shock is prevented. According to the invention, double mechanical interlocking is provided, so that a double-protection effect is achieved, and the reliability and the safety of preventing misoperation are improved; when the solid-sealed vacuum circuit breaker is switched on or the door plate is opened or not completely closed, the interlocking mechanism cannot be operated, and the other mechanism cannot be operated at the same time, so that electric shock is prevented; the overall design is reasonable, manufacturing is easy, installation is convenient, use is reliable, and safety is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power equipment, and in particular relates to an integrated operation interlocking mechanism for a grounding switch and an isolating switch and an operation method thereof. Background Art

[0002] In the high-voltage distribution cabinet operation system, grounding switches and isolating switches play a key role and are directly related to the stable operation of the power system and personnel safety.

[0003] Currently, the grounding switches and disconnectors in high-voltage distribution cabinets mostly utilize separate operating interlock mechanisms. This traditional design makes the two switches independent of each other, requiring operators to operate them sequentially. This requires extremely high operator skills and concentration. In real-world work scenarios, operators face complex operational procedures, and even the slightest negligence can lead to operational errors. For example, if the grounding switch is closed without first opening the disconnector in the prescribed sequence, a strong current can be instantly introduced into the ground terminal, causing a short circuit, resulting in equipment damage, or even a serious safety accident, threatening the operator's life.

[0004] Traditional separate operational interlock mechanisms are unable to meet this development need. Integrating the operational interlock mechanism for the grounding switch and disconnector ensures that both switches operate according to a pre-set logic and sequence, using a mechanical interlocking device. This significantly reduces the probability of misoperation and improves operational accuracy and safety. Furthermore, this integrated design simplifies the internal structure of high-voltage distribution cabinets, reduces equipment costs, improves space utilization, and enhances the overall stability and reliability of the power system. Therefore, the development of an integrated operational interlock mechanism for the grounding switch and disconnector in high-voltage distribution cabinets is urgent. Summary of the Invention

[0005] In response to the above problems, the present invention aims to provide an integrated operating interlock mechanism and operating method for a grounding switch and an isolating switch, which has double mechanical interlocking, plays a dual protection role, and improves the reliability and safety of preventing misoperation; when the sealed vacuum circuit breaker is closed and in operation or the door panel is open or not completely closed, this interlock mechanism cannot be operated, and the other mechanism cannot be operated at the same time, so as to prevent electric shock; the overall design is reasonable, the manufacturing is simple, the installation is convenient, the use is reliable, and the safety is high.

[0006] The technical problem solved by the present invention can be achieved by adopting the following technical solution: an integrated operation interlock mechanism for a grounding switch and an isolating switch, comprising a cabinet, a circuit breaker, an interlock mechanism, a grounding assembly, and an isolating assembly, wherein: The cabinet body includes a door panel, a door pin baffle and a cabinet body cavity, wherein the door panel is located at the front of the cabinet body and is provided with a positioning hole. When the door panel is opened, the door pin baffle covers the positioning hole; when the door panel is closed, the door pin baffle no longer covers the positioning hole. The circuit breaker is located in the front of the cabinet cavity. It is equipped with a closing button and an opening button. Pressing the closing button or the opening button can control the circuit breaker to close or open. A transmission mechanism is set inside the circuit breaker to control the movement of the circuit breaker protection part. The interlocking mechanism includes a handle, a door pin, a circuit breaker closing rod, a grounding control unit, an isolation control unit, and a circuit breaker protection unit. The handle is mounted on the side of the door pin. When the handle rotates, it can drive the door pin to move. The door pin can form a lock with the positioning hole to prevent the door panel from opening. The circuit breaker closing rod is located on the upper part of the circuit breaker, and one end is mounted on the handle. The other end is provided with a sensor. The sensor is connected to the inside of the circuit breaker. When the sensor moves, the movement restriction of the transmission mechanism in the circuit breaker is released. The grounding control unit includes a grounding positioning pin and a grounding operating unit. The grounding operating unit is provided with an operating rod, a deep positioning groove, and a shallow positioning groove. A reset member is provided at the lower portion of the grounding positioning pin. When the grounding assembly is grounded, the grounding positioning pin is located in the shallow positioning groove on the grounding operating unit. The isolation control part includes an isolation positioning pin and an isolation operating part. The isolation operating part is provided with an operating rod, a deep positioning groove and a shallow positioning groove. A reset member is provided at the lower part of the isolation positioning pin. When the isolation component is not isolated, the isolation positioning pin is located in the deep positioning groove on the isolation operating part. The circuit breaker protection part includes a first transmission rod, a second transmission rod, an interlocking member and an isolation positioning groove. One end of the first transmission rod is installed in cooperation with the transmission mechanism in the circuit breaker, and the other end is hingedly connected to the second transmission rod, so that when the first transmission rod rotates, it can drive the second transmission rod to move. The second transmission rod is connected to the interlocking member, and the second transmission rod can drive the interlocking member to move, so that the interlocking member is connected to the isolation positioning groove. After the interlocking member is connected to the isolation positioning groove, the circuit breaker is in a closed state.

[0007] The grounding assembly includes several grounding contacts, grounding knives, grounding transmission rods and grounding connecting rods. Several grounding knives are provided on the grounding connecting rods. One end of the grounding connecting rod is hingedly connected to the grounding transmission rod, and the other end of the grounding transmission rod is installed in conjunction with the grounding operating part. When the grounding operating part rotates, it drives the grounding transmission rod to move along the extension direction of the rod part, and drives the grounding connecting rod to rotate, so that the grounding knife is connected or disconnected with the grounding contact. When the grounding knife is connected with the grounding contact, the grounding assembly is in a grounded state.

[0008] The isolation assembly includes several isolation contacts, isolation knives, isolation transmission rods and isolation connecting rods. Several isolation knives are provided on the isolation connecting rod. One end of the isolation connecting rod is hingedly connected to the isolation transmission rod, and the other end of the isolation transmission rod is installed in conjunction with the isolation operating part. When the isolation operating part rotates, it drives the isolation transmission rod to move along the extension direction of the rod part, and drives the isolation connecting rod to rotate, so that the isolation knife is connected or disconnected with the isolation contact. When the isolation knife is connected with the isolation contact, the isolation assembly is in an unisolated state.

[0009] It also includes a lock seat, which is located on the upper part of the reset member and is fixedly connected to the door pin. The lock seat includes a first card slot, a second card slot and a travel slot. The grounding positioning pin and the isolation positioning pin are located in the travel slot. When the grounding positioning pin or the isolation positioning pin is on the same plumb line as the first card slot or the second card slot, it can move up and down to the first card slot or the second card slot.

[0010] When the grounding assembly is in the grounding state, the first slot and the grounding positioning pin are located on the same plumb line. The grounding positioning pin can be moved downward to disengage the grounding positioning pin from the shallow positioning slot on the grounding operating part, so that the operating rod on the grounding operating part can move downward and drive the grounding operating part to rotate, so that the grounding assembly becomes ungrounded.

[0011] A crank arm is provided at the rear of the handle, and the other end of the crank arm is connected to the circuit breaker closing rod. When the handle rotates, the crank arm can drive the rotation of the crank arm, and the crank arm drives the circuit breaker closing rod to rotate. When the circuit breaker closing rod rotates, the induction part moves.

[0012] The rotation of the handle can drive the lock seat to move so that the second slot and the isolation positioning pin are on the same plumb line. The isolation positioning pin can be moved downward to disengage the isolation positioning pin from the deep positioning groove of the isolation operating part, so that the operating rod on the isolation operating part can move downward and drive the isolation operating part to rotate, so that the isolation component becomes an unisolated state.

[0013] The isolation positioning groove is located at the rear of the isolation positioning pin. When the isolation assembly is in the non-isolated state, the interlocking piece and the isolation positioning groove are located on the same center line, so that the interlocking piece can be inserted into the isolation positioning groove, so that the circuit breaker is in the closed state.

[0014] After the operating rod moves downward, the reset member can push the grounding positioning pin or the isolation positioning pin to a positioning groove opposite to the deep positioning groove or the shallow positioning groove where it was originally located, so that the grounding positioning pin leaves the first slot or the isolation positioning pin enters the second slot, thereby releasing or restoring the movement restriction of the lock seat.

[0015] A method for operating an integrated interlocking mechanism for a grounding switch and an isolating switch comprises the following steps: Step 1: Close the door panel so that the door pin stopper no longer covers the positioning hole; Step 2: Move the grounding positioning pin downward, pull the operating lever to rotate the grounding operating part, and turn the grounding assembly into an ungrounded state; Step 3: Turn the handle to insert the door pin into the positioning hole and lock it, so that the grounding positioning pin is restricted from moving, the isolation positioning pin can move downward, and the sensing element moves; Step 4: Move the isolation positioning pin downward, pull the operating lever to rotate the isolation operating part, and change the isolation component to an unisolated state; Step 5: Press the closing button to close the circuit breaker.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a double mechanical interlock, which plays a dual protection role and improves the reliability and safety of preventing misoperation; when the sealed vacuum circuit breaker is closed or the door panel is open or not completely closed, this interlock mechanism cannot be operated, and the other mechanism cannot be operated at the same time, so as to prevent electric shock; the overall design is reasonable, the manufacture is simple, the installation is convenient, the use is reliable, and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the present invention Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention Figure 3 and a partial magnified view; Figure 4 This is the structural diagram of the interlocking mechanism Figure 1 ; Figure 5 This is a schematic diagram of the structure of the interlocking mechanism, grounding component and isolation component. Figure 1 ; Figure 6 This is a schematic diagram of the structure of the interlocking mechanism, grounding component and isolation component. Figure 2 ; Figure 7 This is the structural diagram of the interlocking mechanism Figure 2 ; Figure 8 This is the structural diagram of the interlocking mechanism Figure 3 .

[0018] In the figure: 1-cabinet, 11-door panel, 111-positioning hole, 12-door pin baffle, 2-circuit breaker, 21-closing button, 22-opening button, 3-interlocking mechanism, 301-operating lever, 302-reset member, 303-lock seat, 3031-first card slot, 3032-second card slot, 3033-travel slot, 304-deep positioning slot, 305-shallow positioning slot, 31-handle, 311-crank arm, 32-door pin, 33-circuit breaker closing lever, 331-sensor, 34-grounding control unit, 341-grounding positioning pin, 342-grounding operating part, 35-isolation control part, 351-isolation positioning pin, 352-isolation operating part, 36-circuit breaker protection part, 361-first transmission rod, 362-second transmission rod, 363-interlocking member, 364-isolation positioning groove, 4-grounding assembly, 41-grounding contact, 42-grounding knife, 43-grounding connecting rod, 44-grounding transmission rod, 5-isolation assembly, 51-isolation contact, 52-isolation knife, 53-isolation connecting rod, 54-isolation transmission rod. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0020] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0021] Combined with attachment Figures 1 to 8 As shown, this embodiment discloses an integrated operation interlock mechanism for a grounding switch and an isolating switch, comprising a cabinet 1, a circuit breaker 2, an interlock mechanism 3, a grounding assembly 4, and an isolating assembly 5, wherein: The cabinet body 1 includes a door panel 11, a door pin stopper 12, and a cabinet cavity. The door panel 11 is located at the front of the cabinet body 1. A positioning hole 111 is provided on the door panel 11. When the door panel 11 is opened, the door pin stopper 12 covers the positioning hole 111, preventing the door pin 32 from passing through the positioning hole 111, thereby preventing the handle portion 31 from being misoperated. When the door panel 11 is closed, the door pin stopper 12 no longer covers the positioning hole 111. The circuit breaker 2 is located at the front of the cabinet cavity. A closing button 21 and an opening button 22 are provided on the circuit breaker 2. Pressing the closing button 21 or the opening button 22 can control the circuit breaker 2 to close or open. A transmission mechanism is provided inside the circuit breaker 2 to control the movement of the circuit breaker protection unit 36. The interlocking mechanism 3 includes a handle 31, a door pin 32, a circuit breaker closing rod 33, a grounding control unit 34, an isolation control unit 35 and a circuit breaker protection unit 36. The handle 31 is installed on the side of the door pin 32. When the handle 31 rotates, it can drive the door pin 32 to move. The door pin 32 can be locked with the positioning hole 111 to prevent the door panel 11 from opening. The circuit breaker closing rod 33 is located on the upper part of the circuit breaker 2, and one end is installed with the handle 31, and the other end is provided with a sensing member 3 31, the sensing member 331 is connected to the inside of the circuit breaker 2. Preferably, in this embodiment, the sensing member 311 adopts a latch structure and passes through the side of the end of the circuit breaker closing rod 33 and the upper part of the circuit breaker 2. When the circuit breaker closing rod 33 rotates, it can drive the sensing member 331 to move; after the sensing member 331 moves, the movement restriction of the transmission mechanism in the circuit breaker 2 can be released. That is, before the sensing member 311 moves, pressing the closing button 21 cannot cause the transmission mechanism to close the circuit breaker 2. The grounding control unit 34 includes a grounding positioning pin 341 and a grounding operating unit 342. The grounding operating unit 342 is provided with an operating rod 301, a deep positioning groove 304, and a shallow positioning groove 305. A reset member 302 is provided below the grounding positioning pin 341. Preferably, in this embodiment, the reset member 302 adopts a spring structure. When the grounding assembly 4 is grounded, the grounding positioning pin 341 is located in the shallow positioning groove 305 on the grounding operating unit 342. The isolation control unit 35 includes an isolation positioning pin 351 and an isolation operating unit 352. The isolation operating unit 352 is provided with an operating rod 301, a deep positioning groove 304, and a shallow positioning groove 305. A reset member 302 is provided at the lower portion of the isolation positioning pin 351. When the isolation assembly 5 is not isolated, the isolation positioning pin 351 is located in the deep positioning groove 304 on the isolation operating unit 352. The circuit breaker protection portion 36 includes a first transmission rod 361, a second transmission rod 362, an interlocking member 363, and an isolation positioning groove 364. One end of the first transmission rod 361 is mounted in cooperation with the transmission mechanism in the circuit breaker 2, and the other end is hingedly connected to the second transmission rod 362. Preferably, in this embodiment, the circuit breaker 2 adopts a circuit breaker structure such as an indoor high-voltage vacuum circuit breaker of model ZN63A (RMVS1) in the prior art. The transmission mechanism in the circuit breaker 2 realizes transmission through the energy storage process of the circuit breaker 2. Specifically, Before the circuit breaker 2 is closed, a certain amount of energy needs to be stored in the circuit breaker 2, that is, the circuit breaker 2 needs to store sufficient force before the circuit breaker 2 can be closed; so that when the first transmission rod 361 rotates, it can drive the second transmission rod 362 to move, and the second transmission rod 362 is matched with the interlocking member 363. The second transmission rod 362 can drive the interlocking member 363 to move, so that the interlocking member 363 is matched with the isolation positioning groove 364. After the interlocking member 363 is matched with the isolation positioning groove 364, the circuit breaker 2 is in the closed state.

[0022] In combination with the above, the grounding assembly 4 includes several grounding contacts 41, grounding knives 42, grounding transmission rods 44 and grounding connecting rods 43. Several grounding knives 42 are provided on the grounding connecting rod 43. Preferably, in this embodiment, the number of grounding contacts 41 and grounding knives 42 is 3; one end of the grounding connecting rod 43 is hingedly matched with the grounding transmission rod 44, and the other end of the grounding transmission rod 44 is installed in cooperation with the grounding operating part 341. Preferably, in this embodiment, a mounting groove is provided at the rear part of the grounding operating part 341, and the end of the grounding transmission rod 44 is installed in the mounting groove through a movable joint, so that when the grounding operating part 341 rotates, the grounding transmission rod 44 is driven to move along the extension direction of the rod, and the grounding connecting rod 43 is driven to rotate, so that the grounding knife 42 is connected or disconnected with the grounding contact 41. When the grounding knife 42 is connected with the grounding contact 41, the grounding assembly 4 is in a grounded state; when the grounding knife 42 is disconnected from the grounding contact 41, the grounding assembly 4 is in an ungrounded state.

[0023] In combination with the above, the isolation assembly 5 includes a number of isolation contacts 51, isolation knives 52, an isolation transmission rod 54 and an isolation connecting rod 53. A number of isolation knives 52 are provided on the isolation connecting rod 53. Preferably, in this embodiment, the number of isolation contacts 51 and isolation knives 52 are both 3; one end of the isolation connecting rod 53 is hingedly cooperated with the isolation transmission rod 54, and the other end of the isolation transmission rod 54 is installed in cooperation with the isolation operating part 351. Preferably, in this embodiment, the installation structure of the isolation transmission rod 54 and the isolation operating part 351 is consistent with the installation structure of the above-mentioned grounding transmission rod 44 and the grounding operating part 341; when the isolation operating part 351 rotates, it drives the isolation transmission rod 54 to move along the extension direction of the rod, and drives the isolation connecting rod 53 to rotate, so that the isolation knife 52 is connected or disconnected with the isolation contact 51. When the isolation knife 52 is connected with the isolation contact 51, the isolation assembly 5 is in an unisolated state; when the isolation knife 52 is disconnected from the isolation contact 51, the isolation assembly 5 is in an isolated state.

[0024] In combination with the above-mentioned installation structure, the interlocking mechanism 3 also includes a lock seat 303, which is located on the upper part of the reset member 302 and is fixedly connected to the door pin 32. When the door pin 32 moves, it can drive the lock seat 303 to move in coordination. The lock seat 303 includes a first card slot 3031, a second card slot 3032 and a travel slot 3033. The grounding positioning pin 341 and the isolation positioning pin 351 are located in the travel slot 3033. When the grounding positioning pin 341 or the isolation positioning pin 351 is on the same plumb line as the first card slot 3031 or the second card slot 3032, it can move up and down to the first card slot 3031 or the second card slot 3032.

[0025] In combination with the above, when the grounding component 4 is in the grounding state, the first slot 3031 and the grounding positioning pin 341 are located on the same plumb line. The grounding positioning pin 341 can be moved downward so that the grounding positioning pin 341 is disengaged from the shallow positioning slot 305 on the grounding operating part 342, so that the operating rod 301 on the grounding operating part 342 can move downward and drive the grounding operating part 342 to rotate, so that the grounding component 4 becomes ungrounded.

[0026] In combination with the above, a crank arm portion 311 is provided at the rear of the handle portion 31, and the other end of the crank arm portion 311 is cooperatively connected to the circuit breaker closing rod 33. Preferably, in this embodiment, the crank arm portion 311 is integrally formed, and the other end of the crank arm portion 311 is provided with a thread and passes through the side of the end of the circuit breaker closing rod 33, and is prevented from disengaging by fasteners such as nuts. When the handle portion 31 is rotated, the crank arm portion 311 can be driven to rotate, and the crank arm portion 311 drives the circuit breaker closing rod 33 to rotate. Since the rotation direction of the crank arm portion 311 and the rotation direction of the circuit breaker closing rod 33 are perpendicular to each other in this embodiment, the crank arm portion 311 and the circuit breaker closing rod 33 will be locked with each other after a small rotation angle, preventing the rotation angle from being too large and causing the sensor 331 to move too large a distance. When the circuit breaker closing rod 33 rotates, the sensor 331 moves.

[0027] In combination with the above-mentioned installation structure, in another embodiment, the several crank arms of the crank arm portion 311 are connected by a movable joint, so that the crank arms can rotate, so that the circuit breaker closing rod 33 will not be locked with the crank arm portion 311 when rotating, which can improve the smoothness of the transmission structure.

[0028] In combination with the above, the rotation of the handle part 31 can drive the lock seat 303 to move, so that the second card slot 3032 and the isolation positioning pin 351 are located on the same plumb line, and the isolation positioning pin 351 can be moved downward to disengage the isolation positioning pin 351 from the deep positioning slot 304 of the isolation operating part 352, so that the operating rod 301 on the isolation operating part 352 can move downward and drive the isolation operating part 352 to rotate, so that the isolation component 5 becomes an unisolated state.

[0029] In combination with the above, the isolation positioning groove 364 is located at the rear of the isolation positioning pin 351. When the isolation assembly 5 is in the non-isolated state, the interlocking member 363 and the isolation positioning groove 364 are located on the same center line, so that the interlocking member 363 can be inserted into the isolation positioning groove 364, so that the circuit breaker 2 is in the closed state; when the isolation assembly 5 is in the isolated state, when the circuit breaker 2 is closed, the interlocking member 363 and the isolation positioning groove 364 are not on the same center line, so that the circuit breaker 2 cannot be closed, thereby preventing misoperation.

[0030] In combination with the above, after the operating rod 301 moves downward, the reset member 302 can push the grounding positioning pin 341 or the isolation positioning pin 351 to the positioning groove opposite to the deep positioning groove 304 or the shallow positioning groove 305 originally located, so that the grounding positioning pin 341 leaves the first slot 3031 or the isolation positioning pin 351 enters the second slot 3032, thereby releasing or restoring the movement restriction of the lock seat 303.

[0031] In combination with the above, the present invention further discloses an operating method of an integrated operating interlock mechanism of a grounding switch and an isolating switch, comprising the following steps: Step 1: Close the door panel 11 so that the door pin baffle 12 no longer covers the positioning hole 111. Under the thrust of the door panel 11, the door pin baffle 12 will move toward the inside of the cabinet 1 and no longer block the door pin 32.

[0032] In step 2, the grounding positioning pin 341 is moved downward, and the operating lever 301 is pulled to rotate the grounding operating portion 342, so that the grounding assembly 4 becomes ungrounded. In this step, the grounding positioning pin 341 is reset by the reset member 302 and is locked into the deep positioning groove 304 of the grounding operating portion 342. The grounding positioning pin 341 moves slightly upward. At this time, the grounding positioning pin 341 leaves the first locking groove 3031, thereby releasing the restriction on the movement of the lock base 303, and thus releasing the restriction on the misoperation of the handle portion 31. In step three, the handle 31 is rotated to insert the door pin 12 into the positioning hole 111, locking it. This restricts the movement of the grounding positioning pin 341, allowing the isolation positioning pin 351 to move downward, and causing the sensing element 331 to move. In this step, the door pin 32 is inserted into the positioning hole 111, locking the door panel 11 and preventing it from opening. The lock base 303 moves rightward, and the grounding positioning pin 341 is now located in the travel groove 3033 and not on the same vertical line as the first locking groove 3031. This restricts the vertical movement of the grounding positioning pin 341, preventing accidental operation of the grounding assembly 4. The lock base 303 moves rightward, and the second locking groove 3032 and the isolation positioning pin 351 are now on the same vertical line, releasing the restriction on the movement of the isolation positioning pin 351. Rotating the handle 31 rotates the crank arm 311, which, through the crank arm 311, rotates the circuit breaker closing lever 33, causing the sensing element 331 to move, and energy storage begins within the circuit breaker 2.

[0033] In step four, the isolation positioning pin 351 moves downward, and the operating rod 301 is pulled to rotate the isolation operating part 352, so that the isolation component 5 becomes an unisolated state; in this step, the isolation positioning pin 351 is reset under the action of the reset member 302, and is locked into the shallow positioning groove 305 of the isolation operating part 352 after being reset, and the isolation positioning pin 351 moves slightly downward. At this time, the isolation positioning pin 351 is locked into the second locking groove 3032, which limits the movement of the lock seat 303, that is, limits the operation of the handle part 31.

[0034] Step 5: Press the closing button 21, the circuit breaker 2 releases the stored energy, causing the first transmission rod 361 to rotate, driving the second transmission rod 362 and the interlocking member 363 to move, so that the interlocking member 363 is inserted into the isolation positioning groove 364, and the circuit breaker 2 is in the closed state.

[0035] In combination with the above-mentioned installation structure, in other embodiments, the upper and lower positional relationships of the components can be exchanged without changing the transmission relationship of the components.

[0036] The present invention has a double mechanical interlock, which plays a dual protection role and improves the reliability and safety of preventing misoperation. When the sealed vacuum circuit breaker is closed or the door panel is open or not completely closed, the interlock mechanism cannot be operated, and the other mechanism cannot be operated at the same time to prevent electric shock. The overall design is reasonable, the manufacture is simple, the installation is convenient, the use is reliable, and the safety is high.

[0037] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An integrated operating interlock mechanism for a grounding switch and an isolating switch, comprising a cabinet (1), a circuit breaker (2), an interlock mechanism (3), a grounding assembly (4) and an isolating assembly (5), characterized in that: A cabinet body (1) comprises a door panel (11), a door pin baffle (12) and a cabinet body cavity, wherein the door panel (11) is located at the front of the cabinet body (1), and a positioning hole (111) is provided on the door panel (11); when the door panel (11) is opened, the door pin baffle (12) covers the positioning hole (111); when the door panel (11) is closed, the door pin baffle (12) no longer covers the positioning hole (111); A circuit breaker (2) is located at the front of the cabinet cavity. A closing button (21) and an opening button (22) are provided on the circuit breaker (2). Pressing the closing button (21) or the opening button (22) can control the circuit breaker (2) to close or open. A transmission mechanism is provided inside the circuit breaker (2) to control the movement of the circuit breaker protection part (36); An interlocking mechanism (3) comprises a handle portion (31), a door pin (32), a circuit breaker closing rod (33), a grounding control portion (34), an isolation control portion (35) and a circuit breaker protection portion (36), wherein the handle portion (31) is mounted on the side of the door pin (32), and when the handle portion (31) rotates, the door pin (32) can be driven to move, and the door pin (32) can be locked with the positioning hole (111) to prevent the door panel (11) from opening; the circuit breaker closing rod (33) is located on the upper part of the circuit breaker (2), and one end is mounted in conjunction with the handle portion (31), and the other end is provided with a sensing element (331), and the sensing element (331) is connected to the inside of the circuit breaker (2). When the sensing element (331) moves, the movement restriction of the transmission mechanism in the circuit breaker (2) can be released; A grounding control portion (34) comprising a grounding positioning pin (341) and a grounding operating portion (342), wherein the grounding operating portion (342) is provided with an operating rod (301), a deep positioning groove (304) and a shallow positioning groove (305), and a reset member (302) is provided at the lower portion of the grounding positioning pin (341). When the grounding assembly (4) is grounded, the grounding positioning pin (341) is located in the shallow positioning groove (305) on the grounding operating portion (342); An isolation control portion (35) comprises an isolation positioning pin (351) and an isolation operating portion (352), wherein the isolation operating portion (352) is provided with an operating rod (301), a deep positioning groove (304), and a shallow positioning groove (305), and a reset member (302) is provided at the lower portion of the isolation positioning pin (351). When the isolation assembly (5) is not isolated, the isolation positioning pin (351) is located in the deep positioning groove (304) on the isolation operating portion (352); The circuit breaker protection part (36) comprises a first transmission rod (361), a second transmission rod (362), an interlocking member (363) and an isolation positioning groove (364), wherein one end of the first transmission rod (361) is mounted in cooperation with the transmission mechanism in the circuit breaker (2), and the other end is hingedly connected to the second transmission rod (362), so that when the first transmission rod (361) rotates, the second transmission rod (362) can drive the second transmission rod (362) to move, and the second transmission rod (362) is connected to the interlocking member (363), and the second transmission rod (362) can drive the interlocking member (363) to move, so that the interlocking member (363) is connected to the isolation positioning groove (364), and after the interlocking member (363) is connected to the isolation positioning groove (364), the circuit breaker (2) is in a closed state.

2. The integrated operation interlock mechanism of the grounding switch and the isolating switch according to claim 1, characterized in that: The grounding assembly (4) comprises a plurality of grounding contacts (41), a grounding knife (42), a grounding transmission rod (44) and a grounding connecting rod (43). The grounding connecting rod (43) is provided with a plurality of grounding knives (42). One end of the grounding connecting rod (43) is hingedly connected to the grounding transmission rod (44). The other end of the grounding transmission rod (44) is installed in conjunction with the grounding operating portion (341). When the grounding operating portion (341) rotates, the grounding transmission rod (44) is driven to move along the extension direction of the rod portion and the grounding connecting rod (43) is driven to rotate, so that the grounding knife (42) is connected to or disconnected from the grounding contact (41). When the grounding knife (42) is connected to the grounding contact (41), the grounding assembly (4) is in a grounded state.

3. The integrated operation interlock mechanism of the grounding switch and the isolating switch according to claim 2, characterized in that: The isolation assembly (5) comprises a plurality of isolation contacts (51), isolation knives (52), an isolation transmission rod (54) and an isolation connecting rod (53). The isolation connecting rod (53) is provided with a plurality of isolation knives (52). One end of the isolation connecting rod (53) is hingedly matched with the isolation transmission rod (54). The other end of the isolation transmission rod (54) is mounted in conjunction with the isolation operating portion (351). When the isolation operating portion (351) rotates, the isolation transmission rod (54) is driven to move along the extension direction of the rod portion and the isolation connecting rod (53) is driven to rotate, so that the isolation knives (52) are connected to or disconnected from the isolation contacts (51). When the isolation knives (52) are connected to the isolation contacts (51), the isolation assembly (5) is in a non-isolated state.

4. The integrated operation interlock mechanism of a grounding switch and an isolating switch according to claim 1, characterized in that: The door lock assembly further comprises a lock seat (303), the lock seat (303) being located on the upper portion of the reset member (302) and being fixedly connected to the door pin (32), the lock seat (303) comprising a first card slot (3031), a second card slot (3032) and a travel slot (3033), the grounding positioning pin (341) and the isolation positioning pin (351) being located in the travel slot (3033), and being able to move up and down into the first card slot (3031) or the second card slot (3032) when the grounding positioning pin (341) or the isolation positioning pin (351) is located on the same plumb line as the first card slot (3031) or the second card slot (3032).

5. The integrated operation interlock mechanism of the grounding switch and the isolating switch according to claim 4, characterized in that: When the grounding assembly (4) is in a grounding state, the first clamping groove (3031) and the grounding positioning pin (341) are located on the same plumb line, and the grounding positioning pin (341) can be moved downward to disengage the grounding positioning pin (341) from the shallow positioning groove (305) on the grounding operating portion (342), so that the operating rod (301) on the grounding operating portion (342) can be moved downward and drive the grounding operating portion (342) to rotate, so that the grounding assembly (4) becomes an ungrounded state.

6. The integrated operation interlock mechanism of a grounding switch and an isolating switch according to claim 1, characterized in that: A crank arm (311) is provided at the rear of the handle portion (31), and the other end of the crank arm (311) is cooperatively connected to the circuit breaker closing rod (33). When the handle portion (31) rotates, the crank arm (311) can be driven to rotate, and the crank arm (311) drives the circuit breaker closing rod (33) to rotate. When the circuit breaker closing rod (33) rotates, the induction member (331) moves.

7. The integrated operation interlock mechanism of the grounding switch and the isolating switch according to claim 6, characterized in that: The rotation of the handle portion (31) can drive the lock seat (303) to move, so that the second slot (3032) and the isolation positioning pin (351) are located on the same plumb line, and the isolation positioning pin (351) can be moved downward to disengage the isolation positioning pin (351) from the deep positioning slot (304) of the isolation operating portion (352), so that the operating rod (301) on the isolation operating portion (352) can be moved downward and drive the isolation operating portion (352) to rotate, so that the isolation assembly (5) becomes an unisolated state.

8. The integrated operation interlock mechanism of the grounding switch and the isolating switch according to claim 7, characterized in that: The isolation positioning groove (364) is located at the rear of the isolation positioning pin (351). When the isolation assembly (5) is in an unisolated state, the interlocking member (363) and the isolation positioning groove (364) are located on the same center line, so that the interlocking member (363) can be inserted into the isolation positioning groove (364), so that the circuit breaker (2) is in a closed state.

9. The integrated operation interlock mechanism of the grounding switch and the isolating switch according to claim 8, characterized in that: After the operating rod (301) moves downward, the reset member (302) can push the grounding positioning pin (341) or the isolation positioning pin (351) to a positioning groove opposite to the deep positioning groove (304) or the shallow positioning groove (305) where it was originally located, thereby causing the grounding positioning pin (341) to leave the first locking groove (3031) or causing the isolation positioning pin (351) to enter the second locking groove (3032), thereby releasing or restoring the movement restriction on the lock seat (303).

10. An operating method for an integrated operating interlock mechanism for a grounding switch and an isolating switch, comprising the integrated operating interlock mechanism for a grounding switch and an isolating switch according to any one of claims 1 to 9, characterized in that The steps include: Step 1: closing the door panel (11) so that the door pin baffle (12) no longer covers the positioning hole (111); Step 2: Move the grounding positioning pin (341) downward, pull the operating rod (301) to rotate the grounding operating portion (342), and change the grounding assembly (4) to an ungrounded state; Step 3: rotating the handle portion (31) so that the door pin (12) is inserted into the positioning hole (111) and locked, so that the movement of the grounding positioning pin (341) is restricted, the isolation positioning pin (351) can move downward, and the sensing element (331) moves; Step 4: Move the isolation positioning pin (351) downward, pull the operating rod (301) to rotate the isolation operating part (352), and change the isolation assembly (5) into an unisolated state; Step 5: Press the closing button (21) to put the circuit breaker (2) into the closed state.

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