A ring main unit interlocking operating mechanism

Abstract

The utility model relates to an interlocking operating mechanism for a ring network cabinet. The technical problem to be solved by the utility model is to provide an interlocking operating mechanism for a ring network cabinet. The technical solution adopted by the utility model: includes an interlocking rod assembly, a grounding operating shaft, an interlocking pressure plate assembly, and a circuit breaker interlocking assembly. The interlocking rod assembly includes a grounding interlocking rod, a tongue-type interlocking plate assembly, a door interlocking hook and a grounding switch. The circuit breaker interlocking assembly includes an interlocking transmission group, an anti-isolation main slide plate assembly, a circuit breaker interlocking cam, an unlocking pull rod assembly, and a closing dial. The interlocking transmission group includes a transmission group main board, a transmission group transmission rod, a transmission group driving block, a main slide plate linkage bracket, an unlocking pull rod linkage part, and a linkage part limit frame. The advantage of the utility model is that when the grounding circuit is connected, the grounding switch is in a chained state for the circuit breaker to be disconnected. When the grounding needs to be disconnected, the door needs to be closed to unlock the grounding switch. The interlocking coordination reliability is high, which improves the safety of the ring network cabinet.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cabinets, in particular to an interlocking operating mechanism for a ring network cabinet. Background Art

[0002] In order to ensure the personal safety of operators and meet the five-protection interlocking requirements of high-voltage cabinets, most of the existing ring network cabinets on the market are mainly based on lower isolation, and the lower door interlock can directly unlock the cabinet door after grounding and closing. As the country makes new requirements for the intelligence, diversification, reliability and life safety of distribution network equipment, especially the continuous improvement of life and property requirements. In order to prevent the residual charge on the electrical equipment after the power is disconnected, endangering the safety of maintenance electricians; to prevent internal faults of the circuit breaker, incomplete opening, and electrical equipment is still energized after the opening operation, endangering the safety of maintenance electricians. Changes need to be made to the previous ring network cabinets, so the upper isolation grounding is adopted, and the upper isolation grounding needs to be closed at the same time as the circuit breaker to complete the grounding. Due to the relationship between isolation and circuit breaker operation sequence, the existing interlocking scheme cannot meet the requirements. Utility Model Content

[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide an interlocking operating mechanism for a ring main unit.

[0004] The technical solution adopted by the interlocking operating mechanism of the ring network cabinet of the utility model: includes an interlocking rod assembly, a grounding operating shaft, an interlocking pressure plate assembly arranged between the interlocking rod assembly and the operating shaft, the interlocking rod assembly includes a grounding interlocking rod, a tongue-shaped interlocking plate assembly inserted through the lower end of the grounding interlocking rod, a door interlocking hook and a grounding switch, and is characterized in that it also includes a circuit breaker interlocking assembly, the circuit breaker interlocking assembly includes an interlocking transmission group, an anti-isolation main slide plate assembly, a circuit breaker interlocking cam sleeved on the operating shaft, an unlocking pull rod assembly matched with the circuit breaker interlocking cam, and a closing dial member linked to the circuit breaker closing, the interlocking transmission group includes a transmission main board, a transmission group transmission rod inserted through one end of the transmission main board and movable left and right, a transmission rod provided at the end of the transmission group transmission rod and sleeved on the connecting rod The transmission group driving block in the middle of the ground interlocking rod, the main skateboard linkage bracket covered by the other end of the transmission main board, the unlocking pull rod linkage piece connected to the main skateboard linkage bracket at one end and connected to the unlocking pull rod assembly at the other end, and the linkage piece limit frame for the upper and lower limit of the unlocking pull rod linkage piece, the transmission main board and the main skateboard linkage bracket are both provided with a main skateboard limit column through-hole; the anti-isolation main skateboard assembly includes an anti-isolation main skateboard, a main skateboard lower limit column and a main skateboard upper limit column arranged on the main skateboard limit column through-hole, the anti-isolation main skateboard is provided with a main skateboard waist-shaped limit groove corresponding to the main skateboard upper limit column and the main skateboard lower limit column, and the rotation of the closing dial can drive the anti-isolation main skateboard assembly to move upward.

[0005] The interlock rod assembly also includes an upper fixing frame, a first reset rod and a second reset rod parallel to and inserted into the upper fixing frame, and a reset spring sleeved on the first reset rod and the second reset rod, the lower end of the second reset rod is connected to the grounding interlock rod, the door interlock hook is placed at the lower ends of the first reset rod and the second reset rod and sleeved on the upper end of the grounding interlock rod, and the grounding switch corresponds to the door interlock hook.

[0006] The interlocking pressure plate assembly includes a grounding baffle plate, a swingable interlocking pressure plate, and a second interlocking cam sleeved on the operating shaft. A pressure plate locating pin is passed through the middle of the interlocking pressure plate, and the end of the pressure plate locating pin is installed on the upper fixed frame. The grounding baffle plate includes a baffle plate shielding portion for blocking the operation of the operating shaft, and a baffle plate linkage portion sleeved on the middle of the first reset rod and the second reset rod. One end of the interlocking pressure plate is pressed on the baffle plate linkage portion and the other end corresponds to the second interlocking cam.

[0007] The grounding interlock rod comprises a grounding interlock upper rod and a grounding interlock lower rod, the upper end of the grounding interlock upper rod is provided with an upper rod protrusion for the door interlock hook to be mounted and corresponding to the bottom of the first reset rod and the second reset rod, the lower end of the grounding interlock upper rod is provided with an upper rod lower positioning recess, and the upper end of the grounding interlock lower rod is provided with a lower rod positioning recess for the transmission group drive block to pass through and corresponding to the upper rod lower positioning recess.

[0008] A T-shaped limit plate is provided on the anti-isolation main slide plate, and a transmission main board L-shaped interlocking portion corresponding to the T-shaped limit plate is provided in the middle of the transmission main board.

[0009] An operating shaft mounting hole is arranged in the circuit breaker interlocking cam, and both the operating shaft mounting hole and the operating shaft are regular hexagonal structures.

[0010] The second interlocking cam and the circuit breaker interlocking cam are both provided with a cam interlocking stop.

[0011] The tongue-shaped interlocking plate assembly comprises a tongue-shaped interlocking plate fixing frame, a U-shaped bracket arranged at the bottom of the tongue-shaped interlocking plate fixing frame, and a tongue-shaped interlocking plate inserted through the U-shaped bracket and corresponding to the grounding interlocking rod.

[0012] The tongue-shaped interlock plate fixing frame is provided with an interlock rod lower through hole for positioning the lower part of the grounding interlock rod, and the tongue-shaped interlock plate is provided with a tongue-shaped interlock plate stopper for limiting the lower end of the grounding interlock rod, and a cabinet door linkage part arranged perpendicular to the tongue-shaped interlock plate stopper.

[0013] The advantages of the interlocking operating mechanism of the ring main unit of the utility model are: when the grounding loop is connected, the grounding switch is in a chained state with the circuit breaker; when grounding is required, the door needs to be closed to unlock the grounding switch; the structure is compact, the operation is simple and convenient, the interlocking cooperation reliability is high, and the safety of the ring main unit is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a structural schematic diagram of the interlocking operating mechanism of the ring main unit of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the interlocking rod assembly of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the interlocking assembly of the circuit breaker of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the interlocking transmission group of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the anti-isolation main slide plate assembly of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the transmission mainboard of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the interlocking pressure plate assembly of the utility model;

[0022] Figure 8 It is an exploded view of the grounding interlocking rod of the utility model;

[0023] Fig. 9 It is a structural schematic diagram of the interlocking cam of the circuit breaker of the utility model;

[0024] Fig.10 It is a structural schematic diagram of the tongue-type interlocking plate assembly of the utility model;

[0025] Fig.11 This is a schematic diagram of the grounding unlocking state of the interlocking operating mechanism of the ring main unit of the utility model;

[0026] Fig.12 It is a schematic diagram of the grounding and closing state of the interlocking operating mechanism of the ring main unit of the utility model. DETAILED DESCRIPTION

[0027] like Figure 1-10As shown, the ring main unit interlocking operating mechanism involved in the utility model comprises an interlocking rod assembly 31, a grounding operating shaft 1, an interlocking pressure plate assembly 32 arranged between the interlocking rod assembly 31 and the operating shaft 1, and a circuit breaker interlocking assembly 33. The interlocking rod assembly 31 comprises a grounding interlocking rod 7, a tongue-shaped interlocking plate assembly 12 arranged at the lower end of the grounding interlocking rod 7, a door interlocking hook 13 and a grounding switch 39. The circuit breaker interlocking assembly 33 comprises an interlocking transmission group 10, an anti-isolation main slide plate assembly 9, and a sleeve arranged on the The circuit breaker interlocking cam 2 on the operating shaft 1, the unlocking pull rod assembly 8 matched with the circuit breaker interlocking cam 2, and the closing toggle 11 linked with the closing of the circuit breaker, the interlocking transmission group 10 includes a transmission main board 16, a transmission group transmission rod 17 that is inserted into one end of the transmission main board 16 and can move left and right, a transmission group driving block 18 that is arranged at the end of the transmission group transmission rod 17 and sleeved on the middle of the grounding interlocking rod 7, a main slide linkage bracket 19 that is covered at the other end of the transmission main board 16, and one end of the main slide linkage bracket 19 that is connected to the grounding interlocking rod 7. The main slide linkage bracket 19 is connected to the unlocking pull rod linkage part 20 and the other end is connected to the unlocking pull rod assembly 8, and the linkage part limit frame 21 is used for the upper and lower limit of the unlocking pull rod linkage part 20. The transmission main board 16 and the main slide linkage bracket 19 are both provided with a main slide limit column penetration hole 23; the anti-isolation main slide assembly 9 includes an anti-isolation main slide 25, a main slide lower limit column 27 arranged on the main slide limit column penetration hole 23, and a main slide upper limit column 26, and the anti-isolation main slide 25 is provided with The waist-shaped limit groove 29 of the main slide corresponds to the upper limit column 26 of the main slide and the lower limit column 27 of the main slide. The rotation of the closing dial 11 can drive the anti-isolation main slide assembly 9 to move upward. When the grounding circuit is connected, the grounding switch is in a chain state for the circuit breaker opening. When the grounding is required, the door needs to be closed to unlock the grounding switch, and then the circuit breaker is unlocked after the grounding is completed to complete the circuit breaker opening. The overall structure is compact, the operation is simple and convenient, the interlocking cooperation reliability is high, and the safety of the ring network cabinet is improved.

[0028] The interlock rod assembly 31 also includes an upper fixing frame 36, a first reset rod 37 and a second reset rod 38 parallelly arranged on the upper fixing frame 36, and a reset spring 35 sleeved on the first reset rod 37 and the second reset rod 38, the lower end of the second reset rod 38 is connected to the grounding interlock rod 7, the door interlock hook 13 is placed at the lower ends of the first reset rod 37 and the second reset rod 38 and sleeved on the upper end of the grounding interlock rod 7, and the grounding switch 39 corresponds to the door interlock hook 13.

[0029] The interlocking pressure plate assembly 32 includes a grounding baffle plate 4, a swingable interlocking pressure plate 41, and a second interlocking cam 42 sleeved on the operating shaft 1. A pressure plate positioning pin 43 is inserted into the middle of the interlocking pressure plate 41, and the end of the pressure plate positioning pin 43 is installed on the upper fixed frame 36. The grounding baffle plate 4 includes a baffle plate shielding portion 44 for blocking the operation of the operating shaft 1, and a baffle plate linkage portion 45 sleeved on the middle of the first reset rod 37 and the second reset rod 38. One end of the interlocking pressure plate 41 is pressed on the baffle plate linkage portion 45 and the other end corresponds to the second interlocking cam 42. The interlocking coordination design is ingenious and has high reliability, which effectively improves the safety of use.

[0030] The grounding interlock rod 7 includes a grounding interlock upper rod 47 and a grounding interlock lower rod 48. The upper end of the grounding interlock upper rod 47 is provided with an upper rod protrusion 50 for the door interlock hook 13 to be mounted and corresponding to the bottom of the first reset rod 37 and the second reset rod 38. The lower end of the grounding interlock upper rod 47 is provided with an upper rod lower positioning recess 51. The upper end of the grounding interlock lower rod 48 is provided with a lower rod positioning protrusion 52 for the transmission group drive block 18 to pass through and corresponding to the upper rod lower positioning recess 51, so that the action is reliable and stable.

[0031] A T-shaped limit plate 53 is provided on the anti-isolation main slide plate 25, and a transmission main board L-shaped interlocking portion 54 corresponding to the T-shaped limit plate 53 is provided in the middle of the transmission main board 16, which is further interlocked and has high safety.

[0032] An operating shaft mounting hole 56 is provided in the circuit breaker interlocking cam 2. Both the operating shaft mounting hole 56 and the operating shaft 1 are regular hexagonal structures, which effectively prevents misrotation and ensures reliable rotation.

[0033] The second interlocking cam 42 and the circuit breaker interlocking cam 2 are both provided with a cam interlocking stop 57 .

[0034] The tongue-shaped interlocking plate assembly 12 includes a tongue-shaped interlocking plate fixing frame 60 , a U-shaped bracket 61 disposed at the bottom of the tongue-shaped interlocking plate fixing frame 60 , and a tongue-shaped interlocking plate 62 inserted through the U-shaped bracket 61 and corresponding to the grounding interlocking rod 7 .

[0035] The tongue-shaped interlocking plate fixing frame 60 is provided with an interlocking rod lower through hole 64 for positioning the lower part of the grounding interlocking rod 7, and the tongue-shaped interlocking plate 62 is provided with a tongue-shaped interlocking plate stopper 65 for limiting the lower end of the grounding interlocking rod 7, and a cabinet door linkage part 66 vertically arranged with the tongue-shaped interlocking plate stopper 65.

[0036] like Fig.11 , 12As shown, when the grounding closing operation is performed, the grounding operating shaft 1 is operated clockwise to simultaneously drive the circuit breaker interlocking cam 2 and the second interlocking cam 42 to unlock the unlocking pull rod assembly 8 and the interlocking pressure plate interlocking pressure plate 41 respectively. At this time, the circuit breaker can be closed. When the circuit breaker is closed, the linkage closing dial 11 pushes up the anti-isolation main slide plate 25 to unlock the interlocking transmission group 10. The door interlocking hook 13 is manually pulled upward to drive the grounding baffle plate 4, the grounding interlocking rod 7, and the interlocking transmission group 10 to be lifted. At this time, the grounding baffle plate 4 blocks the grounding operating shaft 1, and the grounding operating shaft 1 is interlocked so that the wrench cannot be inserted for operation. The tongue-type interlocking plate assembly 12 will automatically pop up to limit the grounding interlocking rod 7 so that it cannot fall. At this time, the lower door can be opened for inspection.

[0037] When it is time to operate the circuit breaker, close the lower door of the cabinet and push back the tongue-type interlock plate assembly 12. At this time, the grounding interlock rod 7 is unlocked and falls naturally, and at the same time, the grounding cover plate 4 is driven to fall, so that the grounding operating shaft 1 is unlocked. The interlocking transmission group 10 is linked. At this time, the grounding operating shaft 1 can be operated to complete the circuit breaker opening. The second interlocking cam 42 locks the interlocking pressure plate 41, and the circuit breaker interlocking cam 2 unlocks the unlocking pull rod assembly 8 (unlocks the circuit breaker opening) to complete the circuit breaker opening. After the circuit breaker opening is completed, the anti-isolation main slide plate 25 and the closing dial 11 are reset.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. An interlocking operating mechanism for a ring main unit, comprising an interlocking rod assembly (31), a grounding operating shaft (1), and an interlocking pressure plate assembly (32) arranged between the interlocking rod assembly (31) and the operating shaft (1), wherein the interlocking rod assembly (31) comprises a grounding interlocking rod (7), a tongue-shaped interlocking plate assembly (12) passing through the lower end of the grounding interlocking rod (7), a door interlocking hook (13), and a grounding switch (39), characterized in that: The circuit breaker interlocking assembly (33) further comprises an interlocking transmission group (10), an anti-isolation main slide plate assembly (9), a circuit breaker interlocking cam (2) sleeved on the operating shaft (1), an unlocking pull rod assembly (8) matched with the circuit breaker interlocking cam (2), and a closing toggle member (11) linked to the closing of the circuit breaker, the interlocking transmission group (10) comprising a transmission main plate (16), a transmission group transmission rod (17) passing through one end of the transmission main plate (16) and movable left and right, and a transmission group transmission rod (17) disposed on the transmission main plate (16). A transmission group driving block (18) is arranged at the end of the rod (17) and sleeved on the middle of the grounding interlocking rod (7), a main slide linkage bracket (19) is arranged on the other end of the transmission main board (16), an unlocking pull rod linkage member (20) connected to the main slide linkage bracket (19) at one end and connected to the unlocking pull rod assembly (8) at the other end, and a linkage member limiting bracket (21) used for limiting the upper and lower positions of the unlocking pull rod linkage member (20), and the transmission main board (16) and the main slide linkage bracket (19) are both provided with a main slide limiting column penetration hole (23); The anti-isolation main slide assembly (9) comprises an anti-isolation main slide (25), a main slide lower limiting column (27) arranged on the main slide limiting column penetration hole (23), and a main slide upper limiting column (26). The anti-isolation main slide (25) is provided with a main slide waist-shaped limiting groove (29) corresponding to the main slide upper limiting column (26) and the main slide lower limiting column (27). The closing toggle member (11) rotates to drive the anti-isolation main slide assembly (9) to move upward.

2. The ring main unit interlocking operating mechanism according to claim 1 is characterized in that: The interlocking rod assembly (31) further comprises an upper fixing frame (36), a first reset rod (37) and a second reset rod (38) which are arranged in parallel on the upper fixing frame (36), and a reset spring (35) which is sleeved on the first reset rod (37) and the second reset rod (38); the lower end of the second reset rod (38) is connected to the grounding interlocking rod (7); the door interlocking hook (13) is placed on the lower ends of the first reset rod (37) and the second reset rod (38) and is sleeved on the upper end of the grounding interlocking rod (7); and the grounding switch (39) corresponds to the door interlocking hook (13).

3. The ring main unit interlocking operating mechanism according to claim 2 is characterized in that: The interlocking pressure plate assembly (32) comprises a grounding baffle plate (4), a swingable interlocking pressure plate (41), and a second interlocking cam (42) sleeved on the operating shaft (1); a pressure plate positioning pin (43) is inserted through the middle of the interlocking pressure plate (41); the end of the pressure plate positioning pin (43) is mounted on the upper fixing frame (36); the grounding baffle plate (4) comprises a baffle plate shielding portion (44) for blocking the operation of the operating shaft (1), and a baffle plate linkage portion (45) sleeved on the middle of the first reset rod (37) and the second reset rod (38); one end of the interlocking pressure plate (41) is pressed on the baffle plate linkage portion (45) and the other end thereof corresponds to the second interlocking cam (42).

4. The ring main unit interlocking operating mechanism according to claim 2 is characterized in that: The grounding interlock rod (7) comprises a grounding interlocking upper rod (47) and a grounding interlocking lower rod (48); the upper end of the grounding interlocking upper rod (47) is provided with an upper rod protrusion (50) for sleeve-mounting the door interlocking hook (13) and corresponding to the bottom of the first reset rod (37) and the second reset rod (38); the lower end of the grounding interlocking upper rod (47) is provided with an upper rod lower positioning recess (51); the upper end of the grounding interlocking lower rod (48) is provided with a lower rod positioning recess (52) for the transmission group drive block (18) to pass through and corresponding to the upper rod lower positioning recess (51).

5. The ring main unit interlocking operating mechanism according to claim 1 is characterized in that: A T-shaped limit plate (53) is provided on the anti-isolation main slide plate (25), and a transmission main board L-shaped interlocking portion (54) corresponding to the T-shaped limit plate (53) is provided in the middle of the transmission main board (16).

6. The ring main unit interlocking operating mechanism according to claim 1, characterized in that: An operating shaft mounting hole (56) is provided in the circuit breaker interlocking cam (2); the operating shaft mounting hole (56) and the operating shaft (1) are both regular hexagonal structures.

7. The ring main unit interlocking operating mechanism according to claim 3 is characterized in that: The second interlocking cam (42) and the circuit breaker interlocking cam (2) are both provided with a cam interlocking stop (57).

8. The ring main unit interlocking operating mechanism according to claim 1, characterized in that: The tongue-shaped interlocking plate assembly (12) comprises a tongue-shaped interlocking plate fixing frame (60), a U-shaped bracket (61) arranged at the bottom of the tongue-shaped interlocking plate fixing frame (60), and a tongue-shaped interlocking plate (62) inserted into the U-shaped bracket (61) and corresponding to the grounding interlocking rod (7).

9. The ring main unit interlocking operating mechanism according to claim 8, characterized in that: The tongue-shaped interlocking plate fixing frame (60) is provided with an interlocking rod lower through hole (64) for positioning the lower portion of the grounding interlocking rod (7), and the tongue-shaped interlocking plate (62) is provided with a tongue-shaped interlocking plate stopper (65) for limiting the lower end of the grounding interlocking rod (7), and a cabinet door linkage part (66) vertically arranged with the tongue-shaped interlocking plate stopper (65).

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