A grounding operation interlocking mechanism for a ring main unit and the ring main unit

Abstract

This utility model provides a grounding operation interlocking mechanism for a ring main unit and the ring main unit itself, including an electromagnetic lock, a baffle, and a guide member. The electromagnetic lock and the guide member are fixedly installed. The baffle is connected to the locking rod of the electromagnetic lock and forms a guiding engagement with the guide member. The baffle switches between a blocking position that blocks the grounding operation shaft and a yielding position that is offset from the grounding operation shaft through the guiding engagement with the guide member. By adding a guide member, the switching movement of the baffle is guided, effectively preventing the baffle from shaking and becoming unstable during the switching movement, making the switching action smoother and improving the interlocking stability.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit accessories, specifically to a grounding operation interlocking mechanism for a ring main unit and a ring main unit. Background Technology

[0002] High-voltage ring main units are indispensable electrical equipment for power distribution and supply. In order to facilitate maintenance and repair, maintenance personnel need to open the lower door of the ring main unit. Before opening the lower door, it must be ensured that the grounding switch is in the closed state and the ring main unit is not energized, otherwise it may cause an accident.

[0003] To address this, existing ring main units employ interlocking components that limit the lower door panel. These interlocking components are constrained by the grounding mechanism. When the grounding switch is open, the interlocking components are restricted, maintaining their constraint on the lower door panel. When the grounding switch closes, the interlocking components are released, allowing the lower door panel to open normally. Simultaneously, to prevent accidental operation of the grounding switch, an interlocking mechanism is designed at the front end of the grounding operating shaft. This involves adding an electromagnetic lock and a baffle. The baffle is connected to the locking rod of the electromagnetic lock. When the grounding switch is open, the baffle blocks the grounding operating shaft, and the electromagnetic lock is locked. When the electromagnetic lock unlocks, it moves the baffle to a release position, disengaging it from the grounding operating shaft, allowing normal grounding operation. However, due to the inherent instability of the electromagnetic lock itself, the baffle connected to it also exhibits instability, potentially interfering with other components during operation and causing interlocking failure. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a grounding operation interlocking mechanism for a ring main unit and a ring main unit.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A grounding operation interlocking mechanism for a ring main unit, the ring main unit having a grounding operation shaft, including an electromagnetic lock, a baffle and a guide member, the electromagnetic lock and the guide member being fixedly installed, the baffle being connected to the locking rod of the electromagnetic lock and forming a guiding engagement with the guide member, the baffle switching between a blocking position that blocks the grounding operation shaft and a yielding position that is offset from the grounding operation shaft through the guiding engagement with the guide member.

[0007] Furthermore, the guide member is a guide plate, the guide plate has a guide gap, and the baffle passes through the guide gap to form a guide fit.

[0008] Furthermore, the guide is an "L"-shaped guide plate, including a first support plate and a second support plate connected to each other. The first end of the first support plate is fixedly connected to an external bracket, and the second support plate is connected to the second end of the first support plate and extends toward the baffle. The guide gap is formed on the second support plate.

[0009] Furthermore, the baffle has a first side connected to the locking rod of the electromagnetic lock and a second side disposed opposite to the first side, the guide member is located on the second side of the baffle, and the second side of the baffle passes through the guide gap.

[0010] Furthermore, the ring main unit has a fixed mounting plate, on which the electromagnetic lock and / or the guide component are fixed.

[0011] Furthermore, the baffle and guide are disposed on the inner side of the cabinet door panel of the ring main unit. The cabinet door panel of the ring main unit is also provided with a grounding operation hole corresponding to the grounding operation shaft. When the baffle is switched to the blocking position, it is located between the grounding operation hole and the grounding operation shaft and blocks the grounding operation hole.

[0012] Furthermore, the electromagnetic lock is connected to the high-voltage live display of the ring main unit, and the high-voltage live display controls the locking and unlocking of the electromagnetic lock.

[0013] Furthermore, the electromagnetic lock has a push button that is linked to the locking rod, and the push button is operated to drive the baffle to switch between the blocking position and the yielding position.

[0014] Furthermore, the guide member has guide grooves distributed on opposite sides of the baffle, and the opposite sides of the baffle are respectively assembled into the guide grooves to form a guiding fit.

[0015] Furthermore, the grounding operating shaft cooperates with an interlocking component, which extends to the lower door panel to restrict the lower door panel. When the grounding operating shaft is in the open position, the interlocking component is locked, and when the grounding operating shaft is in the closed position, the interlocking component is unlocked.

[0016] A ring main unit includes at least the grounding operation interlocking mechanism of the ring main unit described above.

[0017] The technical solution provided by this utility model has the following beneficial effects:

[0018] By adding a guide structure, the switching movement of the baffle is guided, effectively preventing the baffle from shaking and becoming unstable during the switching movement, making the switching action smoother and improving the interlocking stability. Attached Figure Description

[0019] Figure 1 The diagram shown is a partial structural schematic of the ring main unit;

[0020] Figure 2 The diagram shown is a schematic representation of the grounding operation interlocking mechanism of the ring main unit in the embodiment.

[0021] Figure 3 The diagram shown is a structural schematic of the ring main unit in the embodiment.

[0022] Figure 4 The diagram shown is a structural schematic of the guide component in the embodiment. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] In the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] This embodiment provides a grounding operation interlocking mechanism for a ring main unit, such as... Figure 1 and Figure 2 As shown, the ring main unit 1 has a grounding operating shaft 4, which controls the opening and closing of the grounding switch. The interlocking member 3 of the lower door panel 2 is restricted by the grounding operating shaft 4. When the grounding switch is open, the grounding operating shaft 4 is in the open position, restricting the interlocking member 3 and keeping it in a limited position on the lower door panel 2, preventing it from opening. When the grounding switch is closed, the grounding operating shaft 4 is in the closed position, releasing the restriction on the interlocking member 3, allowing it to move and thus opening the lower door panel 2. Specifically, a grounding cam 8 is provided on the grounding operating shaft 4. When the grounding operating shaft 4 is in the open position, the grounding cam 8 abuts against the interlocking member 3, preventing it from lifting upwards and thus maintaining the limited position on the lower door panel 2. When the grounding operating shaft 4 rotates to the closed position, the grounding cam 8 shifts, giving the interlocking member 3 room to move upwards, allowing it to lift normally and thus opening the lower door panel 2.

[0027] Specifically, the grounding operation interlocking mechanism of the ring main unit includes an electromagnetic lock 10, a baffle 20, and a guide 30. The electromagnetic lock 10 and the guide 30 are fixedly installed. The ring main unit 1 has a fixed mounting plate 5, and both the electromagnetic lock 10 and the guide 30 are fixed on the fixed mounting plate 5. The fixed mounting plate 5 is the original structure of the ring main unit 1. Fixing the electromagnetic lock 10 and the guide 30 on this fixed mounting plate 5 does not require any additional components. Of course, in other embodiments, the electromagnetic lock 10 and / or the guide 30 can also be fixed on other external supports.

[0028] The baffle 20 is connected to the locking rod of the electromagnetic lock 10 and forms a guiding engagement with the guide member 30. The baffle 20 switches between the blocking position of the grounding operation shaft 4 and the yielding position that is offset from the grounding operation shaft 4 through the guiding engagement with the guide member 30.

[0029] One operating method is as follows: The baffle 20 is switched to the blocking position, blocking the front end of the grounding operating shaft 4, locking the electromagnetic lock 10. At this time, the locking rod of the electromagnetic lock 10 cannot move, keeping the baffle 20 in the blocked position and preventing it from being moved. This prevents the grounding operating shaft 4 from being operated to close the grounding switch, thus keeping the interlocking component 3 in a limiting position on the lower door panel 2, preventing the lower door panel 2 from opening. When it is necessary to open the lower door panel 2, the electromagnetic lock 10 is unlocked. At this time, the locking rod of the electromagnetic lock 10 can move freely. Then, the baffle 20 is switched from the blocking position to the yielding position, exposing the grounding operating shaft 4. This allows the grounding operating shaft 4 to be operated, closing the grounding switch and releasing the restriction on the interlocking component 3, allowing the lower door panel 2 to be opened. Using this grounding operation interlocking mechanism, at least the electromagnetic lock 10 must be unlocked before the baffle 20 can be switched, preventing accidental operation of the grounding operating shaft 4 by the operator.

[0030] Meanwhile, the addition of guide member 30 guides the switching movement of baffle 20, effectively preventing baffle 20 from shaking and becoming unstable during the switching movement, making the switching action smoother, improving interlocking stability, and ensuring the reliability of interlocking.

[0031] Specifically, the ring main unit 1 has a cabinet door panel 6 located above the lower door panel 2. The baffle 20 and guide 30 are disposed on the inner side of the cabinet door panel 6 of the ring main unit 1. The cabinet door panel 6 of the ring main unit 1 is also provided with a grounding operation hole corresponding to the grounding operation shaft 4. When the baffle 20 is switched to the blocking position, it is positioned between the grounding operation hole and the grounding operation shaft 4, thus blocking the grounding operation hole and preventing the operator from inserting tools through the grounding operation hole to connect the grounding operation shaft 4. When the baffle 20 is switched to the yielding position, the baffle 20 is simultaneously offset from both the grounding operation hole and the grounding operation shaft 4, so that the grounding operation hole and the grounding operation shaft 4 directly correspond. At this time, the operator can insert tools through the grounding operation hole to connect the grounding operation shaft 4.

[0032] Furthermore, in this embodiment, as Figures 2 to 4 As shown, the guide member 30 is a guide plate, and the guide plate has a guide gap 301. The baffle 20 passes through the guide gap 301 to form a guide fit. The use of a guide plate is simple in structure and easy to implement. Specifically, the baffle 20 has a first side (defined as the left side) connected to the locking rod of the electromagnetic lock 10 and a second side (defined as the right side) opposite to the first side. The guide member 30 is located on the second side of the baffle 20, that is, on the right side of the baffle 20. Further, the guide member 30 is an "L"-shaped guide plate, including a first support plate 31 and a second support plate 32 connected to each other. The first support plate 31 is vertically arranged, and the first end (i.e., the upper end) of the first support plate 31 is fixedly connected to the external bracket (i.e., the fixed mounting plate). As in this embodiment, the first end of the first support plate 31 has two connecting holes, and bolts or other fasteners are passed through the connecting holes and fixed to the fixed mounting plate 5. The second support plate 32 connects to the second end (i.e., the lower end) of the first support plate 31 and extends towards the baffle 20, i.e., to the left. The guide gap 301 is formed on the second support plate 32 and extends to the left and right. The second side of the baffle 20 passes through the guide gap 301 of the second support plate 32, thereby achieving a guiding fit. With this configuration, the guide component 30 can be installed in a previously empty space without adding extra volume or interfering with other components.

[0033] Of course, in other embodiments, the structure of the guide member 30 is not limited to this. For example, an "L"-shaped guide plate can also be located below the baffle 20, that is, the first support plate 31 is located below the baffle 20 and fixed on the fixed mounting plate 5, and its second support plate 32 extends upward. The lower side of the baffle 20 passes through the guide gap 301, thus achieving a guiding fit. Alternatively, the guide member 30 adopts an arc-shaped plate structure, with one end of the arc-shaped plate fixed on the fixed mounting plate 5, and the other end extending towards the baffle 20 and opening the guide gap 301, thus achieving a guiding fit. Or, the guide member 30 adopts other structures, such as the guide member 30 having guide grooves distributed on opposite sides (upper and lower sides) of the baffle 20. The upper and lower sides of the baffle 20 are respectively assembled into the guide grooves to form a guiding fit, thus achieving a guiding fit. However, the method of setting guide grooves on the upper and lower sides may be more complex in structure than the aforementioned guide plate with a guide gap 301, and it may be inconvenient to add to the original structure. Meanwhile, the guide component 30 can also be a guide sleeve, guide rail, or other structure that can achieve guidance.

[0034] The electromagnetic lock 10 is connected to the high-voltage live display of the ring main unit 1, and the locking and unlocking of the electromagnetic lock 1 are controlled by the high-voltage live display. That is, the locking and unlocking of the electromagnetic lock 1 is controlled by the high-voltage live display, which can achieve more precise and timely control. Of course, the electromagnetic lock 1 can also be equipped with a manual operation structure for emergency control, so as to control the switching between locking and unlocking of the electromagnetic lock 1 by manual operation.

[0035] The electromagnetic lock 10 has a push button 11 that is linked to the locking rod. By operating the push button 11, the baffle 20 is switched between an obstructed position and a yielding position. For example, when the push button 11 is pushed to the left, it causes the locking rod and the baffle 20 to move to the left simultaneously, switching the baffle 20 from the obstructed position to the yielding position. When the push button 11 is pushed to the right, it causes the locking rod and the baffle 20 to move to the right simultaneously, switching the baffle 20 from the yielding position to the obstructed position. Specifically, the push button 11 is exposed on the cabinet door panel 6 of the ring main unit 1 for easy operation.

[0036] Furthermore, this embodiment also provides a ring main unit 1, which includes at least the grounding operation interlocking mechanism of the ring main unit described above.

[0037] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An earthing operation interlocking mechanism of a ring main unit, the ring main unit having an earthing operation shaft, characterized in that: It includes an electromagnetic lock, a baffle, and a guide. The electromagnetic lock and the guide are fixedly installed. The baffle is connected to the locking rod of the electromagnetic lock and forms a guiding engagement with the guide. The baffle switches between a blocking position that blocks the grounding operating shaft and a yielding position that is offset from the grounding operating shaft through the guiding engagement with the guide.

2. The grounding operation interlocking mechanism of the ring main unit according to claim 1, characterized in that: The guide component is a guide plate, and the guide plate has a guide gap. The baffle passes through the guide gap to form a guide fit.

3. The grounding operation interlocking mechanism of the ring main unit according to claim 2, characterized in that: The guide is an "L"-shaped guide plate, including a first support plate and a second support plate connected to each other. The first end of the first support plate is fixedly connected to an external bracket, and the second support plate is connected to the second end of the first support plate and extends toward the baffle. The guide gap is formed on the second support plate.

4. The grounding operation interlocking mechanism of the ring main unit according to claim 2 or 3, characterized in that: The baffle has a first side connected to the locking rod of the electromagnetic lock and a second side disposed opposite to the first side. The guide is located on the second side of the baffle, and the second side of the baffle passes through the guide gap.

5. The grounding operation interlocking mechanism of the ring main unit according to claim 1 or 2, characterized in that: The ring main unit has a fixed mounting plate, and the electromagnetic lock and / or the guide component are fixed on the fixed mounting plate.

6. The grounding operation interlocking mechanism of the ring main unit according to claim 1, characterized in that: The baffle and guide are installed on the inside of the cabinet door panel of the ring main unit. The cabinet door panel of the ring main unit is also provided with a grounding operation hole corresponding to the grounding operation shaft. When the baffle is switched to the blocking position, it is between the grounding operation hole and the grounding operation shaft and blocks the grounding operation hole.

7. The grounding operation interlocking mechanism of the ring main unit according to claim 1, characterized in that: The electromagnetic lock is connected to the high-voltage live display of the ring main unit, and the high-voltage live display controls the locking and unlocking of the electromagnetic lock.

8. The grounding operation interlocking mechanism of the ring main unit according to claim 1, characterized in that: The electromagnetic lock has a push button that is linked to the locking rod. By operating the push button, the baffle is switched between the blocking position and the yielding position.

9. The grounding operation interlocking mechanism of the ring main unit according to claim 1, characterized in that: The guide member has guide grooves distributed on opposite sides of the baffle, and the opposite sides of the baffle are respectively assembled into the guide grooves to form a guide fit.

10. The grounding operation interlocking mechanism of the ring main unit according to claim 1, characterized in that: The grounding operating shaft engages with an interlocking component, which extends to the lower door panel to restrict the lower door panel. When the grounding operating shaft is in the open position, the interlocking component is locked; when the grounding operating shaft is in the closed position, the interlocking component is unlocked.

11. A ring main unit, characterized in that: It includes at least the grounding operation interlocking mechanism of the ring main unit as described in any one of claims 1 to 10.

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