Interlocking mechanism

Abstract

The utility model provides an interlocking mechanism which comprises a circuit breaker mechanism, an isolation mechanism, a grounding mechanism and a lower door plate. The circuit breaker mechanism is in linkage connection with the isolation mechanism and the grounding mechanism through the interlocking mechanism. The interlocking mechanism comprises an interlocking plate A, an interlocking plate B, an interlocking cam plate A, an interlocking cam plate B, an interlocking reversing plate and an interlocking limiting plate; the interlocking plate A is linked with the grounding mechanism through a separation blade A; the interlocking plate A is linked with the isolation mechanism through a baffle plate C; the interlocking plate B is in transmission connection with the isolation mechanism and the grounding mechanism. The interlocking plate B is linked with the grounding mechanism through a baffle plate B; the interlocking plate B is linked with the isolation mechanism through a baffle plate D; according to the utility model, the linkage operation of power transmission, power failure and grounding can be realized, the overall potential safety hazard is reduced, the personal safety of workers is ensured, the structure is reliable and durable, the action is flexible and accurate, and the processing and manufacturing can be standardized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical cabinet interlocking, in particular to an interlocking mechanism. Background Art

[0002] To ensure that electrical cabinet operation complies with the "five protections" requirements of national standards, the cabinet must be disconnected before being connected to the electrical system, and the outgoing line side of the cabinet connected to the user must be grounded. Traditional disconnectors are not structurally stable, reliable, or durable, and their operation is not flexible or accurate. They are not suitable for high currents and cannot simultaneously interlock both power-on and power-off operations, posing safety risks. Therefore, an interlocking mechanism is needed to address these technical issues. Utility Model Content

[0003] The purpose of the utility model is to provide an interlocking mechanism that can realize the linkage operation of power supply, power outage and grounding, reduce the overall safety hazards, and ensure the personal safety of the staff. Its structure is reliable, durable, flexible and accurate, and its processing and manufacturing can be standardized.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions: an interlocking mechanism, including a circuit breaker mechanism, an isolation mechanism, a grounding mechanism and a lower door plate; in the initial state, the circuit breaker mechanism, the isolation mechanism and the grounding mechanism are all in the open state; the lower door plate is in the closed state; wherein: the circuit breaker mechanism is respectively linked to the isolation mechanism and the grounding mechanism through the interlocking mechanism; the lower door plate is linked to the grounding mechanism; the interlocking mechanism includes an interlocking plate A, an interlocking plate B, an interlocking cam plate A, interlocking cam plate B, interlocking reversing plate and interlocking limit plate; the circuit breaker mechanism includes a circuit breaker and a circuit breaker opening and closing indicator plate; the circuit breaker opening and closing indicator plate is transmission-connected to the interlocking plate A; the interlocking plate A is linked to the grounding mechanism through baffle A; the interlocking plate A is linked to the isolation mechanism through baffle C; the interlocking plate B is transmission-connected to the isolation mechanism and the grounding mechanism respectively; the interlocking plate B is linked to the grounding mechanism through baffle B; the interlocking plate B is linked to the isolation mechanism through baffle D.

[0005] As a further improvement to the technical solution of the present invention, the circuit breaker mechanism also includes a circuit breaker closing button; the interlocking cam plate A is installed on the main shaft of the isolation mechanism; the interlocking cam plate A is transmission-connected to the interlocking reversing plate; the interlocking reversing plate is transmission-connected to the interlocking plate B; the interlocking plate B is linked to the circuit breaker closing button through a baffle E.

[0006] As a further improvement to the technical solution of the present invention, a blocking piece F is installed on the interlocking plate B; in the initial state, the circuit breaker closing button is blocked by the blocking piece F.

[0007] As a further improvement of the technical solution of the present invention, the grounding mechanism includes a door pin bracket shaft, a guide frame, a first return spring, a door pin shaft, a second return spring and a grounding linkage cam; the grounding linkage cam is installed on the main shaft of the grounding mechanism; the door pin shaft is connected to the grounding linkage cam through the second return spring; the door pin bracket shaft can be lifted and lowered on the guide frame through the first return spring; the guide frame is installed on the front plate of the mechanism; the baffle A is installed on the top of the door pin bracket shaft; the baffle A is connected and separated from the grounding operating shaft through the lifting movement of the door pin bracket shaft; the grounding linkage cam is transmission-connected to the interlocking cam plate B; the door pin shaft locks the lower door panel.

[0008] As a further improvement of the technical solution of the present invention, the interlocking cam plate A is installed on the main shaft of the isolation mechanism; the interlocking cam plate A is transmission-connected to the interlocking reversing plate; and the interlocking reversing plate is transmission-connected to the interlocking plate B.

[0009] As a further improvement of the technical solution of the present invention, the interlocking cam plate B is installed on the main shaft of the grounding mechanism; the interlocking cam plate B is transmission-connected to the interlocking plate B.

[0010] As a further improvement to the technical solution of the present invention, the isolation mechanism includes a closing operation shaft; the interlocking plate A is linked to the closing operation shaft through a baffle C.

[0011] As a further improvement to the technical solution of the present invention, the lower door panel is connected to the door pin bracket shaft; the door pin bracket shaft contacts the grounding operating shaft through the baffle E.

[0012] As a further improvement of the technical solution of the present invention, the grounding mechanism also includes a grounding operating shaft; the interlocking plate A is linked to the grounding operating shaft through the baffle A; and the interlocking plate B is linked to the grounding operating shaft through the baffle B.

[0013] As a further improvement to the technical solution of the present invention, two interlocking limit plates are provided, which are respectively installed on the isolating machine and the grounding mechanism, and are used to limit the interlocking plate B to the middle position.

[0014] Beneficial effects of the utility model:

[0015] The utility model realizes the linkage between the circuit breaker mechanism, the isolation mechanism, the grounding mechanism and the lower door panel by setting an interlocking mechanism, thereby realizing the linkage operation of power supply, power outage and grounding, reducing the overall safety risks and ensuring the personal safety of the staff. The utility model has a reliable structure, durability, flexible and accurate operation, and can be processed and manufactured in a standardized manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of an interlocking mechanism according to an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0019] Figure 3 yes Figure 1 An enlarged schematic diagram of part B;

[0020] Figure 4 yes Figure 1 Enlarged schematic diagram of part C.

[0021] In the accompanying drawings: 1-interlocking mechanism; 2-baffle A; 3-baffle C; 4-baffle B; 5-baffle D; 6-baffle F; 7-guide frame; 8-baffle E; 11-interlocking plate A; 12-interlocking plate B; 13-interlocking cam plate A; 14-interlocking cam plate B; 15-interlocking reversing plate; 16-interlocking limit plate; 71-door pin bracket shaft; 72-guide frame; 73-door pin shaft; 74-grounding linkage cam. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this utility model, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the technical solutions of various embodiments may be combined with each other, but only on the basis that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions contradicts or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 4 As shown, an interlocking mechanism includes a circuit breaker mechanism, an isolation mechanism, a grounding mechanism 7 and a lower door plate; in the initial state, the circuit breaker mechanism, the isolation mechanism, and the grounding mechanism are all in the open state; the lower door plate is in the closed state; wherein: the circuit breaker mechanism is linked to the isolation mechanism and the grounding mechanism respectively through the interlocking mechanism 1; the lower door plate is linked to the grounding mechanism; the interlocking mechanism 1 includes an interlocking plate A11, an interlocking plate B12, an interlocking cam plate A13, an interlocking cam plate B14, an interlocking reversing plate 15 and Interlock limit plate 16; the circuit breaker mechanism includes a circuit breaker and a circuit breaker opening and closing indicator; the circuit breaker opening and closing indicator is transmission-connected to the interlock plate A11; the interlock plate A11 is linked to the grounding mechanism through the baffle A2; the interlock plate A11 is linked to the isolation mechanism through the baffle C3; the interlock plate B12 is transmission-connected to the isolation mechanism and the grounding mechanism respectively; the interlock plate B12 is linked to the grounding mechanism through the baffle B4; the interlock plate B12 is linked to the isolation mechanism through the baffle D5.

[0028] Specifically, in this embodiment, the circuit breaker mechanism also includes a circuit breaker closing button; the interlocking cam plate A13 is installed on the main shaft of the isolation mechanism; the interlocking cam plate A13 is transmission-connected to the interlocking reversing plate 15; the interlocking reversing plate 15 is transmission-connected to the interlocking plate B12; the interlocking plate B12 is linked to the circuit breaker closing button through the baffle E8.

[0029] Specifically, in this embodiment, a blocking piece F6 is installed on the interlocking plate B12; in the initial state, the circuit breaker closing button is blocked by the blocking piece F6.

[0030] Specifically, in this embodiment, the grounding mechanism 7 includes a door pin bracket shaft 71, a guide frame 72, a first return spring, a door pin shaft 73, a second return spring and a grounding linkage cam 74; the grounding linkage cam 74 is installed on the main shaft of the grounding mechanism 7; the door pin shaft 73 is connected to the grounding linkage cam 74 through the second return spring; the door pin bracket shaft 71 can be lifted and lowered on the guide frame 72 through the first return spring; the guide frame 72 is installed on the front plate of the mechanism; the baffle A2 is installed on the top of the door pin bracket shaft 71; the baffle A2 is connected to and separated from the grounding operating shaft through the lifting movement of the door pin bracket shaft 71; the grounding linkage cam 74 is transmission-connected to the interlocking cam plate B14; the door pin shaft 73 locks the lower door panel.

[0031] Specifically, in this embodiment, the interlocking cam plate A13 is installed on the main shaft of the isolation mechanism; the interlocking cam plate A13 is transmission-connected to the interlocking reversing plate 15; and the interlocking reversing plate 15 is transmission-connected to the interlocking plate B12.

[0032] Specifically, in this embodiment, the interlocking cam plate B14 is installed on the main shaft of the grounding mechanism 7; the interlocking cam plate B14 is transmission-connected to the interlocking plate B12.

[0033] Specifically, in this embodiment, the isolation mechanism includes a closing operation shaft; the interlocking plate A11 is linked to the closing operation shaft through the baffle C3.

[0034] Specifically, in this embodiment, the lower door panel is connected to the door pin bracket shaft 71; the door pin bracket shaft 71 is in contact with the grounding operation shaft through the blocking piece E8.

[0035] Specifically, in this embodiment, the grounding mechanism 7 further includes a grounding operating shaft; the interlocking plate A11 is linked to the grounding operating shaft via a baffle A; and the interlocking plate B12 is linked to the grounding operating shaft via a baffle B4.

[0036] Specifically, in this embodiment, two interlocking limit plates 16 are provided, which are respectively installed on the isolating machine and the grounding mechanism 7, and are used to limit the interlocking plate B12 to the middle position.

[0037] It should be noted that baffles A2 and C are local locations of interlock plate A11; interlock plate A11 and interlock plate B12 are placed overlapping, with interlock plate A11 on top and interlock plate B12 on the bottom; interlock plate A11 is driven by the circuit breaker's opening and closing indicator. When the circuit breaker is in the closed state, interlock plate A11 blocks the closing operating shaft, and interlock plate B12 blocks the grounding operating shaft. When the circuit breaker is in the open state, neither is blocked. Baffles B, D, and F6 are local locations of interlock plate B12. Interlock plate B12 is driven by the isolation mechanism and grounding mechanism 7, respectively. Only when the isolation mechanism is in the closed state will baffle F6 release the circuit breaker mechanism's operating authority; operation of the circuit breaker mechanism is not allowed at any other time; interlock plate B12 also serves as the interlocking function between the isolation mechanism and grounding mechanism 7. Interlocking reversing plate 15, mounted below the isolation mechanism, converts the rotational motion of interlocking cam plate B14 into vertical motion of interlocking plate B12. Two interlocking limiting plates 16, mounted on the isolation structure and grounding mechanism 7, respectively, are responsible for limiting interlocking plate B12 to the neutral position.

[0038] The working principle of this utility model:

[0039] 1. Power supply operation interlock

[0040] 1. Define the initial state: the circuit breaker mechanism, the isolation mechanism, and the grounding mechanism 7 are all in the open state; the lower door panel is in the closed state.

[0041] 2. Interlocking position: The interlocking plate A11 is driven by the circuit breaker opening and closing indicator. When the circuit breaker is in the opening state, the interlocking plate A11 is located at the bottom, the baffle A2 does not block the grounding operating shaft, and the baffle C does not block the closing operating shaft; the interlocking plate B12 is driven by the isolation mechanism and the grounding mechanism 7 respectively. When the isolation mechanism and the grounding mechanism 7 are both in the opening state, the interlocking plate B12 is located in the middle, the baffle B does not block the grounding operating shaft, and the baffle D does not block the closing operating shaft; after the lower door panel is installed, the door pin bracket shaft 71 will be pulled down, and the baffle E8 does not block the grounding operating shaft.

[0042] 3. In the initial state, all the opening and closing buttons of the circuit breaker are blocked by the blocking piece F6 on the interlocking plate B12, ensuring that the circuit breaker mechanism cannot perform opening and closing operations; after the operating handle is inserted into the operating shaft of the isolation mechanism and operated clockwise to close the isolation mechanism, the interlocking cam plate A13 fixed on the main shaft of the isolation mechanism rotates counterclockwise, pushing the interlocking reversing plate 15 to rotate clockwise. The interlocking reversing plate 15 pushes the roller on the interlocking plate B12, causing the interlocking plate B12 to move downward, releasing the blocking piece E8 under the opening and closing buttons of the circuit breaker, so that the circuit breaker can perform opening and closing operations. At the same time, the blocking piece B blocks the operating shaft of the grounding mechanism 7 downward, making the grounding mechanism 7 unable to operate.

[0043] 4. Insert the operating handle into the energy storage operating shaft of the circuit breaker and turn it clockwise until the energy storage indicator is in place. Press the circuit breaker closing button. After the circuit breaker is closed, the opening and closing indicator of the circuit breaker mechanism drives the interlocking plate A11 to move upward, the blocking piece A2 blocks the grounding operating shaft, and the blocking piece C blocks the closing operating shaft. The isolation mechanism and the grounding mechanism 7 cannot be operated, and the closing and power supply operation is completed.

[0044] 2. Power failure operation interlock

[0045] 1. Press the opening button to open the circuit breaker. At the same time, the opening and closing indicator of the circuit breaker mechanism drives the interlock plate A11 to move downward, the baffle A2 releases the grounding operating shaft, and the baffle C releases the closing operating shaft, and the isolation mechanism can open normally.

[0046] 2. After inserting the operating handle into the isolation closing shaft, rotate it counterclockwise to open the disconnector. After the isolation mechanism is closed or opened, the interlock cam plate A13 fixed on the isolation mechanism main shaft rotates clockwise back to its original position. Interlock plate B12 moves upward under the spring force of the lower interlock limit plate 16. The roller on interlock plate B12 pushes the interlock reversing plate 15 to rotate counterclockwise, causing it to return to its original position. Interlock plate B12 moves upward, and the baffle E8 below the closing button locks the circuit breaker open and close, making the circuit breaker inoperable. Baffle A2 releases the operating shaft of the grounding mechanism 7.

[0047] 3. After inserting the operating handle into the isolation grounding shaft, rotate the handle clockwise to close the grounding switch. Interlock cam plate B14, fixed on the main shaft of grounding mechanism 7, rotates counterclockwise, pushing the roller below interlock plate B12, causing interlock plate B12 to move upward. Blocking plate D blocks the isolation mechanism operating shaft upward, rendering the isolation mechanism inoperable. The grounding interlock cam, fixed on the main shaft of grounding mechanism 7, rotates counterclockwise, causing door pin shaft 73 to move upward under the force of the spring, releasing the lock on the lower door panel.

[0048] 4. Lift the lower door panel upward and pull it outward at the same time to open the lower door panel. The door pin bracket shaft 71 moves upward under the action of the spring force, so that the blocking piece E8 blocks the operating shaft of the grounding mechanism 7, making the grounding mechanism 7 unable to operate. The power outage operation is completed, and subsequent operations of the power outage maintenance can be carried out.

[0049] The utility model realizes the linkage between the circuit breaker mechanism, the isolation mechanism, the grounding mechanism 7 and the lower door panel by providing an interlocking mechanism 1, thereby realizing the linkage operation of power supply, power outage and grounding, reducing the overall safety risks and ensuring the personal safety of the staff. The utility model has a reliable structure, durability, flexible and accurate operation, and can be processed and manufactured in a standardized manner.

[0050] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An interlocking mechanism comprising a circuit breaker mechanism, an isolation mechanism, a grounding mechanism, and a lower door panel; in an initial state, the circuit breaker mechanism, the isolation mechanism, and the grounding mechanism are all in an open state; and the lower door panel is in a closed state; characterized in that: The circuit breaker mechanism is respectively linked to the isolation mechanism and the grounding mechanism through an interlocking mechanism; the lower door panel is linked to the grounding mechanism; the interlocking mechanism includes an interlocking plate A, an interlocking plate B, an interlocking cam plate A, an interlocking cam plate B, an interlocking reversing plate and an interlocking limit plate; the circuit breaker mechanism includes a circuit breaker and a circuit breaker opening and closing indicator plate; the circuit breaker opening and closing indicator plate is transmission-connected to the interlocking plate A; the interlocking plate A is linked to the grounding mechanism through a baffle A; the interlocking plate A is linked to the isolation mechanism through a baffle C; the interlocking plate B is respectively transmission-connected to the isolation mechanism and the grounding mechanism; the interlocking plate B is linked to the grounding mechanism through a baffle B; the interlocking plate B is linked to the isolation mechanism through a baffle D.

2. An interlocking mechanism according to claim 1, characterized in that: The circuit breaker mechanism also includes a circuit breaker closing button; the interlocking cam plate A is installed on the main shaft of the isolation mechanism; the interlocking cam plate A is transmission-connected to the interlocking reversing plate; the interlocking reversing plate is transmission-connected to the interlocking plate B; the interlocking plate B is linked to the circuit breaker closing button through a baffle E.

3. An interlocking mechanism according to claim 2, characterized in that: A blocking piece F is installed on the interlocking plate B; in the initial state, the circuit breaker closing button is blocked by the blocking piece F.

4. The interlocking mechanism according to claim 1, wherein: The grounding mechanism includes a door pin bracket shaft, a guide frame, a first return spring, a door pin shaft, a second return spring and a grounding linkage cam; the grounding linkage cam is installed on the main shaft of the grounding mechanism; the door pin shaft is connected to the grounding linkage cam through the second return spring; the door pin bracket shaft can be lifted and lowered on the guide frame through the first return spring; the guide frame is installed on the front plate of the mechanism; the baffle A is installed on the top of the door pin bracket shaft; the baffle A is connected and separated from the grounding operating shaft through the lifting movement of the door pin bracket shaft; the grounding linkage cam is connected to the interlocking cam plate B in transmission; the door pin shaft locks the lower door panel.

5. The interlocking mechanism according to claim 1, wherein: The interlocking cam plate A is installed on the main shaft of the isolation mechanism; the interlocking cam plate A is transmission-connected to the interlocking reversing plate; the interlocking reversing plate is transmission-connected to the interlocking plate B.

6. The interlocking mechanism according to claim 1, characterized in that: The interlocking cam plate B is installed on the main shaft of the grounding mechanism; the interlocking cam plate B is transmission-connected to the interlocking plate B.

7. The interlocking mechanism according to claim 1, characterized in that: The isolation mechanism includes a closing operation shaft; the interlocking plate A is linked to the closing operation shaft through a baffle C.

8. The interlocking mechanism according to claim 4, characterized in that: The lower door plate is connected to the door pin bracket shaft; the door pin bracket shaft contacts the grounding operating shaft through the baffle E.

9. The interlocking mechanism according to claim 1, characterized in that: The grounding mechanism further includes a grounding operating shaft; the interlocking plate A is linked to the grounding operating shaft via a baffle A; and the interlocking plate B is linked to the grounding operating shaft via a baffle B.

10. The interlocking mechanism according to claim 1, characterized in that: There are two interlocking limit plates, which are respectively installed on the isolating machine and the grounding mechanism, and are used to limit the interlocking plate B to the middle position.

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