Door plate interlocking trigger device and ring main unit

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to a door plate interlocking trigger device and a ring main unit, the door plate interlocking trigger device comprises a trigger mechanism, the trigger mechanism is provided with a tension spring and is in pluggable trigger connection with a buckle at the side part of a door plate through the tension spring, and the door plate is interlocked with a door linkage mechanism through the trigger mechanism. The door linkage mechanism and the trigger mechanism are arranged in a switching interlocking mode, a closing and opening operation hole is shielded or shown through the trigger mechanism, and the closing and opening operation hole and the door plate are arranged in a locking or unlocking mode through the door linkage mechanism and the trigger mechanism. According to the utility model, the trigger can be triggered to interlock the interlocking plate to switch the clamping position at the moment when the door plate is opened or closed, so that the door linkage mechanism quickly responds to the switching position of the interlocking plate to shield or show the closing and opening operation hole, the timeliness of door plate interlocking triggering is greatly improved, and the operation and maintenance efficiency of the ring main unit is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and particularly relates to a door panel interlock trigger device and a ring main unit cabinet. Background Art

[0002] A ring main unit cabinet is a set of high-voltage switchgear installed in a steel plate metal cabinet or made into a prefabricated sectionalized ring main unit power supply unit. The ring main unit cabinet generally has three working positions: closing, opening, and grounding. Before being used, the ring main unit cabinet is generally in the grounding position. When power is supplied to the ring main unit cabinet, it is necessary to first perform the grounding disconnection operation, that is, operate the ring main unit cabinet to the opening position, and then operate the ring main unit cabinet to the closing position, that is, the power supply is completed. When the ring main unit cabinet is in operation, it is necessary to ensure that the lower door panel is closed so that the live parts are enclosed in the cable chamber, effectively protecting personal safety. However, in actual operation, the lower door panel can also be operated when it is not closed, posing a risk of accidents or safety hazards. In order to ensure the safety of the operation of the ring main unit cabinet, an interlock device has been installed on the cabinet door of the ring main unit cabinet at present. However, the internal part of the interlock device often gets stuck, making it difficult to operate the ring main unit cabinet with the cabinet door closed, and there are still risks of accidents or safety hazards.

[0003] There is research on the problem of jamming of the cabinet door interlock device in the prior art. For example, in the patent application CN213660238U - a lower door interlock device for a ring main unit cabinet, the blocking part is inserted into or pushed out of the blocking groove through the interlock mechanism and the trigger component arranged up and down, solving the problem that the cabinet door interlock device often gets stuck at present. However, the existing lower door interlock device can only ensure the safety of the operation of the ring main unit cabinet when the cabinet door is in the closed state, but it is difficult to effectively control the timeliness of the triggering of the cabinet door interlock, thus seriously affecting the operation and maintenance efficiency of the ring main unit cabinet. Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a door panel interlock trigger device and a ring main unit cabinet to solve the problems in the above background art that it is difficult to effectively control the timeliness of the triggering of the lower door interlock device at the present stage, thus seriously affecting the operation and maintenance efficiency of the ring main unit cabinet.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A door panel interlock trigger device includes a trigger mechanism. A rivet and a tension spring are arranged on the trigger mechanism and are elastically inserted and pulled out with a buckle on the side of the door panel through the rivet and the tension spring for triggering connection. The door panel is interlocked with a door interlock mechanism through the trigger mechanism. The door interlock mechanism is set to be converted and interlocked with the trigger mechanism, and the closing and opening operation holes are blocked or shown through the trigger mechanism. The closing and opening operation holes are set to be locked or unlocked with the door panel through the door interlock mechanism and the trigger mechanism.

[0006] Furthermore, the triggering mechanism includes an L-shaped bracket A, a trigger, and an L-shaped bracket B. The lower part of the L-shaped bracket B overlaps on one side of the trigger, the other side of the trigger overlaps on the lower part of the L-shaped bracket A, and the upper part of the L-shaped bracket A is fixedly connected to the upper part of the L-shaped bracket B in an overlapping manner. A limiting baffle extending from the side end of the lower part of the L-shaped bracket B is connected to the side end of the trigger and the side end of the lower part of the L-shaped bracket A in a limiting manner. The limiting baffle and the tension spring are arranged on the same side end of the trigger. The tension spring is arranged outside the limiting baffle. One end of the tension spring is hung in the hanging hole A at the side end of the lower part of the L-shaped bracket A, and the other side of the tension spring is hung in the hanging hole B at the lower side end of the trigger. A rivet hole is opened beside the hanging hole B, and a rivet is fixedly penetrated through the rivet hole. The rivet passes through the side of the trigger overlapping the L-shaped bracket B to the side of the trigger overlapping the L-shaped bracket A and extends to be inserted and removed with a buckle. The door panel is trigger-connected to the trigger through the buckle, rivet, tension spring, and movable pin inserted and removed; a movable pin penetrates through the bottom end of the lower part of the L-shaped bracket A. The movable pin sequentially penetrates through the L-shaped bracket A, the trigger, and the L-shaped bracket B from the outer side direction of the lower part of the L-shaped bracket A to the outer side direction of the lower part of the L-shaped bracket B and is sleeved with a flat washer and an opening snap ring on the outer side of the lower part of the L-shaped bracket B; one end of the trigger is supported and rotated between the inner sides of the lower parts of the L-shaped bracket A and the L-shaped bracket B through a movable pin, and a stepped bayonet A and a bayonet B are opened at the upper part of this end and are converted and interlocked with the door connection mechanism through the bayonet A or the bayonet B.

[0007] Furthermore, the door connection mechanism includes a door interlock guide rod, a door connection transmission rod, and a door connection sliding plate. The upper part of the door connection sliding plate is arranged to block the closing and opening operation hole through the bayonet A or to expose the closing and opening operation hole through the bayonet B. The lower part of the door connection sliding plate is fixed to the middle part of the door connection transmission rod. The door connection transmission rod is fixed to the top end of the door interlock guide rod; an interlock plate is fixed to the bottom of the door interlock guide rod. The interlock plate penetrates through the interlock hole opened at the connection of the upper and lower parts of the L-shaped bracket A and is connected in a conversion and positioning manner with the bayonet A or the bayonet B.

[0008] In addition to the above technical solutions, there is also a ring main unit with the door panel interlock triggering device, and the door panel interlock triggering device is fixed inside the cabinet of the ring main unit.

[0009] Compared with the prior art, the beneficial effects of the present utility model are:

[0010] 1. The utility model utilizes the insertion and extraction of the buckle and the elastic action of the tension spring, enabling the door panel to trigger the trigger mechanism to interlock the door linkage mechanism to block or expose the closing and opening operation holes instantly when the door panel is opened or closed. As a result, the triggering effect of the trigger mechanism is greatly improved. By adopting the conversion interlock setting of the door linkage mechanism and the trigger mechanism, not only can the closing and opening operation holes be ensured to be in the locked state (i.e., inoperable) when the door panel is opened instantly, but also the closing and opening operation holes can be ensured to be in the unlocked state (i.e., operable) when the door panel is closed instantly. Thus, the closing and opening operations can only be carried out when the door panel is closed, effectively enhancing the operating safety of the ring main unit. At the same time, the timeliness of the door panel interlock trigger is effectively controlled, ensuring the efficiency of the ring main unit operation and maintenance.

[0011] 2. The utility model adopts the overlapping L-shaped bracket A, trigger, and L-shaped bracket B as the trigger mechanism, effectively simplifying the structure and installation process of the trigger mechanism, and greatly improving the triggering effect of the trigger mechanism. By setting the movable pin to penetrate through the L-shaped bracket A, trigger, and L-shaped bracket B at the same time and setting the stepped structure of the bayonet A and bayonet B on the trigger, the trigger can instantly switch the clamping position of the door linkage mechanism under the opening and closing of the door panel. As a result, the closing and opening operation holes can be locked or unlocked instantly when the door panel is opened and closed. Then, by utilizing the limiting effect of the limiting baffle, the rotation of the trigger is within a controllable range, making the conversion of the clamping position of the door linkage mechanism more stable and reliable.

[0012] 3. The utility model adopts the setting of the interlock plate passing through the interlock hole and the conversion clamping position with the bayonet A or bayonet B, enabling the trigger to synchronously drive the interlock plate to switch the clamping position instantly under the opening and closing of the door panel. Thus, the door linkage mechanism can synchronously block or expose the closing and opening operation holes under the conversion of the interlock plate, greatly improving the timeliness of the door panel interlock trigger and ensuring the efficiency of the ring main unit operation and maintenance. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the cabinet door of the ring main unit of the utility model in the open state;

[0014] Figure 2 It is a schematic side sectional structural diagram of the cabinet door of the ring main unit of the utility model in the closed state;

[0015] Figure 3 It is Figure 2 the exploded structural schematic diagram of the assembly of the trigger mechanism and the door panel in

[0016] Figure 4 It is Figure 2 the connection structural schematic diagram of the trigger mechanism and the door linkage mechanism in

[0017] Figure 5 It is Figure 4Schematic diagram of the front structure therein;

[0018] Figure 6 Schematic cross-sectional structure diagram of the interlocking plate of the present utility model when it is at bayonet A;

[0019] Figure 7 Schematic cross-sectional structure diagram of the interlocking plate of the present utility model when it is at bayonet B;

[0020] Figure 8 Schematic structure diagram of the trigger mechanism of the present utility model;

[0021] Figure 9 is Figure 8 exploded assembly structure diagram of.

[0022] Wherein: 1. Trigger mechanism; 101. L-shaped bracket A; 1011. Interlocking hole; 102. Trigger; 103. L-shaped bracket B; 2. Tension spring; 3. Door panel; 301. Snap; 4. Door interlocking mechanism; 401. Door interlock guide rod; 402. Door interlock drive rod; 403. Door interlock sliding plate; 5. Closing and opening operation hole; 6. Limit baffle; 7. Movable shaft pin; 8. Flat washer; 9. Snap ring; 10. Hanging hole A; 11. Hanging hole B; 12. Rivet hole; 13. Rivet; 14. Bayonet A; 15. Bayonet B; 16. Interlocking plate. Specific implementation mode

[0023] The following embodiments are used to further illustrate the content of the present utility model and do not limit the application of the present utility model. Embodiment 1:

[0024] Please refer to Figures 1-9 , this embodiment provides a door panel interlock trigger device, including a trigger mechanism 1 for interlock trigger. A rivet 13 and a tension spring 2 are arranged on the trigger mechanism 1, and the trigger mechanism 1 is elastically inserted and triggered with a snap 301 on the side of the door panel 3 through the rivet 13 and the tension spring 2. The door panel 3 is interlocked with a door interlocking mechanism 4 for interlock conversion through the trigger mechanism 1. The door interlocking mechanism 4 is arranged in conversion interlock with the trigger mechanism 1, and a closing and opening operation hole 5 for closing and opening operations is shielded or revealed through the trigger mechanism 1. The closing and opening operation hole 5 is locked or unlocked with the door panel 3 through the door interlocking mechanism 4 and the trigger mechanism 1.

[0025] Please refer to Figures 1-9 , the trigger mechanism 1 includes an L-shaped bracket A 101 for fixation, a trigger 102 for triggering, and an L-shaped bracket B 103 for assisting the L-shaped bracket A 101 to fix the trigger 102. The lower part of the L-shaped bracket B 103 overlaps on one side of the trigger 102, the other side of the trigger 102 overlaps on the lower part of the L-shaped bracket A 101, and the upper part of the L-shaped bracket A 101 is fixedly connected in an overlapping manner with the upper part of the L-shaped bracket B 103;

[0026] A movable axle pin 7 for rotating the trigger 102 is passed through the bottom end of the L-shaped bracket A101. The movable axle pin 7 passes through the L-shaped bracket A101, the trigger 102, and the L-shaped bracket B103 in sequence from the lower outer side of the L-shaped bracket A101 to the lower outer side of the L-shaped bracket B103. The movable axle pin 7 is set together with the flat washer 8 and the open retaining ring 9 on the lower outer side of the L-shaped bracket B103, so that the movable axle pin 7 is limited and fixed under the action of the open retaining ring 9.

[0027] The lower side end of the L-shaped bracket B103 is extended with a limit baffle 6 that is connected to the side end of the trigger 102 and the lower side end of the L-shaped bracket A101. The limit baffle 6 and the tension spring 2 are arranged on the same side end of the trigger 102;

[0028] The tension spring 2 is arranged on the outside of the limit baffle 6, one end of the tension spring 2 is hung in the hanging hole A10 at the lower side end of the L-shaped bracket A101, and the other end of the tension spring 2 is hung in the hanging hole B11 at the lower side end of the trigger 102;

[0029] A rivet hole 12 is provided next to the hanging hole B11. A rivet 13 is fixed through the rivet hole 12 for plugging and unplugging the buckle 301. The rivet 13 passes from the side of the trigger 102 overlapped with the L-shaped bracket B103 to the side of the trigger overlapped with the L-shaped bracket A101 and extends to be plugged and unplugged with the buckle 301. The door panel 3 is triggered and connected to the trigger 102 through the plug-in buckle 301 and rivet 13, the tension spring 2 and the movable shaft pin 7.

[0030] The lower part of one end of the trigger 102 is supported by a movable shaft pin 7 to rotate between the inner side of the lower part of the L-shaped bracket A101 and the inner side of the lower part of the L-shaped bracket B103, and the upper part of this end is provided with a stepped structure of a bayonet A14 and a bayonet B15 for conversion, and the interlocking setting is converted with the door linkage mechanism 4 through the bayonet A14 or the bayonet B15.

[0031] See also Figures 1-2 and Figures 4-7 The door linkage mechanism 4 includes a door interlock guide rod 401 for triggering the interlock, a door linkage transmission rod 402 for transmission, and a door linkage sliding plate 403 for the lock hole. The upper portion of the door linkage sliding plate 403 is shielded from the closing and opening operation hole 5 by a bayonet A14 or exposed to the closing and opening operation hole 5 by a bayonet B15. The lower portion of the door linkage sliding plate 403 is fixed to the middle portion of the door linkage transmission rod 402, and the door linkage transmission rod 402 is fixed to one end of the top of the door interlock guide rod 401.

[0032] An interlocking plate 16 for triggering the conversion is fixed to the bottom of the door interlocking guide rod 401. The interlocking plate 16 passes through the interlocking hole 1011 opened at the connection between the upper and lower parts of the L-shaped bracket A101 and is switchably connected to the bayonet A14 or the bayonet B15.

[0033] Working principle and usage process of this embodiment: As Figures 1-9 shown, after the door panel interlock trigger device is assembled, the operator installs the entire door panel interlock trigger device inside the ring main unit. The purpose is to enable the trigger 102 to interlock and switch the position of the interlock plate 16 instantaneously when the door panel 3 is opened or closed, so that the door interlock mechanism 4 can quickly respond to the switching position of the interlock plate 16 to block or expose the opening / closing operation hole 5, greatly improving the timeliness of the door panel 3 interlock trigger and ensuring the operation and maintenance efficiency of the ring main unit.

[0034] Since the trigger mechanism 1 is installed on the side wall of the lower door of the ring main unit and the door panel 3 is in the open state when the ring main unit is not operating (as Figure 1 shown), when the ring main unit needs to operate, the operator inserts the door panel 3 of the ring main unit into the rivet 13 on the trigger 102 through the buckle 301 on its side, closing the door panel 3. At this time, the rivet 13 will stretch the tension spring 2 under the action of gravity under the insertion of the buckle 301 and drive the trigger 102 to rotate towards the door panel 3, causing the interlock plate 16 to switch from the position of the bayonet A14 to the position of the bayonet B15 and driving the door interlock guide rod 401 and the door interlock transmission rod 402 to move downward (as Figure 7 shown). As a result, the door interlock sliding plate 403 slides downward synchronously with the downward movement of the door interlock transmission rod 402, and then the opening / closing operation hole 5 is exposed under the downward sliding of the door interlock sliding plate 403, enabling the operator to perform closing and opening operations instantaneously when the door panel 3 is closed, ensuring the operation efficiency and safety of the ring main unit;

[0035] When the ring main unit needs to be maintained, the operator opens the door panel 3 of the ring main unit. At this time, the buckle 301 on the side of the door panel 3 is pulled out or disengaged from the rivet 13 on the trigger 102. The rivet 13 will lose the gravity effect and the tension spring 2 will reset, driving the trigger 102 to rotate towards the inner side of the ring main unit cabinet, causing the interlock plate 16 to switch from the position of the bayonet B15 to the position of the bayonet A14 and driving the door interlock guide rod 401 and the door interlock transmission rod 402 to move upward (as Figure 6 shown). As a result, the door interlock sliding plate 403 slides upward synchronously with the upward movement of the door interlock transmission rod 402, and then the opening / closing operation hole 5 is blocked under the upward sliding of the door interlock sliding plate 403, enabling the operator to be unable to perform closing and opening operations instantaneously when the door panel 3 is open, ensuring the maintenance efficiency and safety of the ring main unit. Embodiment 2:

[0036] Please refer to Figures 1-9, as another object of the present utility model, there is provided a ring main unit, in which the above-mentioned door interlock trigger device is provided. The door interlock trigger device is fixed inside the cabinet of the ring main unit. Therefore, the ring main unit can achieve any of the beneficial effects of the above-described door interlock trigger device, which will not be elaborated here.

Claims

1. A door panel interlock trigger device, comprising a trigger mechanism, characterized in that, A rivet and a tension spring are provided on the trigger mechanism, and the trigger mechanism is elastically inserted and removed through the rivet and the tension spring with a buckle on the side of the door panel. The door panel is interlocked with a door interlocking mechanism through the trigger mechanism. The door interlocking mechanism is set to be converted and interlocked with the trigger mechanism, and the closing and opening operation holes are blocked or shown through the trigger mechanism. The closing and opening operation holes are locked or unlocked with the door panel through the door interlocking mechanism and the trigger mechanism.

2. The door panel interlock trigger device according to claim 1, characterized in that, The trigger mechanism includes an L-shaped bracket A, a trigger, and an L-shaped bracket B. The lower part of the L-shaped bracket B overlaps on one side of the trigger, the other side of the trigger overlaps on the lower part of the L-shaped bracket A, and the upper parts of the L-shaped bracket A and the L-shaped bracket B are fixedly connected in an overlapping manner.

3. The door panel interlock triggering device according to claim 2, wherein, A movable pin is penetrated through the bottom end of the lower part of the L-shaped bracket A. The movable pin sequentially penetrates the L-shaped bracket A, the trigger, and the L-shaped bracket B from the outer side direction of the lower part of the L-shaped bracket A to the outer side direction of the lower part of the L-shaped bracket B, and is sleeved with a flat washer and a snap ring on the outer side of the lower part of the L-shaped bracket B.

4. A door panel interlock trigger device according to claim 3, characterized in that, One end of the trigger is supported and rotated between the inner sides of the lower parts of the L-shaped bracket A and the L-shaped bracket B through the movable pin, and a stepped structure of bayonet A and bayonet B is provided on the upper part of this end, and the door interlocking mechanism is set to be converted and interlocked through bayonet A or bayonet B.

5. The door panel interlock trigger device according to claim 4, characterized in that, The door interlocking mechanism includes a door interlock guide rod, a door interlock transmission rod, and a door interlock sliding plate. The upper part of the door interlock sliding plate blocks the closing and opening operation holes through bayonet A or shows the closing and opening operation holes through bayonet B. The lower part of the door interlock sliding plate is fixed to the middle part of the door interlock transmission rod, and the door interlock transmission rod is fixed to the top end of the door interlock guide rod.

6. An interlock trigger device for a door panel according to claim 5, characterized in that, An interlock plate is fixed to the bottom of the door interlock guide rod. The interlock plate is connected with bayonet A or bayonet B in a conversion type of clamping connection through an interlock hole opened at the connection between the upper and lower parts of the L-shaped bracket A.

7. A door panel interlock trigger device according to claim 4, characterized in that, A limiting baffle extending to be limit-connected with the side end of the trigger and the side end of the lower part of the L-shaped bracket A is provided at the side end of the lower part of the L-shaped bracket B. The limiting baffle and the tension spring are arranged on the same side end of the trigger.

8. An interlocking trigger device for a door panel according to claim 7, characterized in that, The tension spring is arranged outside the limiting baffle. One end of the tension spring is hung in the hanging hole A at the side end of the lower part of the L-shaped bracket A, and the other side of the tension spring is hung in the hanging hole B at the lower side end of the trigger.

9. The door panel interlock trigger device according to claim 8, characterized in that, A rivet hole is opened beside the hanging hole B, and a rivet is fixedly penetrated through the rivet hole. The rivet passes through the side of the trigger overlapping with the L-shaped bracket B to the side of the trigger overlapping with the L-shaped bracket A and extends to be inserted and removed with the buckle. The door panel is triggered to connect with the trigger through the inserted and removed buckle, rivet, tension spring, and movable pin.

10. A ring main unit, characterized in that, It includes a door panel interlock trigger device according to any one of claims 1-9. The door panel interlock trigger device is fixed inside the cabinet of the ring main unit.

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