Novel interlocking device for circuit breaker and power distribution cabinet door

Abstract

The utility model relates to the technical field of power distribution cabinets, in particular to a novel interlocking device of a circuit breaker and a power distribution cabinet door. Comprising a bottom plate, a rotating plate and a V-shaped crank arm, a lock catch is arranged at the right end of the rotating plate, the V-shaped crank arm is arranged on the right side of the rotating plate, a left arm of the V-shaped crank arm corresponds to the lock catch, a connecting arm is arranged at the lower end of the rotating plate and connected with a first brake cable, and a right arm of the V-shaped crank arm is connected with a second brake cable. The interlocking device is simple in structure, the circuit breaker and the power distribution cabinet door are connected together through the interlocking device, and safety of door opening maintenance operation of the power distribution cabinet door is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power distribution cabinet technical field, specifically is a new type circuit breaker and power distribution cabinet door interlocking device. BACKGROUND

[0002] The circuit breaker is the core component of the high-voltage power distribution cabinet, and it can cut off the circuit to ensure the safety of electricity use. When the power distribution cabinet needs to be opened for maintenance or maintenance, the circuit breaker is required to be in the grounded state, and the interlocking device can control the power distribution cabinet door and open the power distribution cabinet door. When the circuit breaker is closed in the live state after the maintenance or maintenance is completed, the interlocking device controls the power distribution cabinet door to be closed and cannot be opened.

[0003] In order to facilitate the above operation, avoid operation failure, the utility model realizes a new type circuit breaker and power distribution cabinet door interlocking device. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of new type circuit breaker and power distribution cabinet door interlocking device, it is convenient to use, can prevent opening power distribution cabinet door when circuit breaker is in the closed live state, avoid misoperation.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of new type circuit breaker and power distribution cabinet door interlocking device, it is characterized in that, it includes bottom plate 1, rotating plate 2, V-shaped crank arm 3, rotating plate 2 right end is equipped with lock catch 21, rotating plate 2 is equipped with guide hole 22, guide hole 22 is equipped with guide column 11, guide column 11 one end is set on bottom plate 1;Rotating plate 2 right side is equipped with V-shaped crank arm 3, V-shaped crank arm 3 is connected with bottom plate 1 by shaft pin 12, shaft pin 12 is fixed on bottom plate 1, the left arm 31 of V-shaped crank arm corresponds lock catch 21;Rotating plate 2 lower end is equipped with connecting arm 23, connecting arm 23 connects first brake wire 24, the right arm 32 of V-shaped crank arm connects second brake wire 33.

[0007] Further, first compression spring 34 is equipped between the right arm 32 of V-shaped crank arm and second brake wire 33.

[0008] Further, rotating plate 2 left side is equipped with manual lever 25.

[0009] Further, lock bracket 13 is equipped, rotating plate 2 is equipped with fixed shaft 26, fixed shaft 26 is connected with lock plate 27 right end through shaft sleeve, the front side of lock plate 27 is equipped with second compression spring 28, when lock plate 27 is located in the clamping groove of lock bracket 13, second compression spring 28 extrudes rotating plate 2.

[0010] Further, the top of lock plate 27 is equipped with top plate 271, and the top plate 271 is equipped with a jack on the lock bracket 13, and the jack is equipped with a bolt 29. Further, the top of lock plate 27 is equipped with top plate 271, and the top plate 271 is equipped with a jack on the lock bracket 13, and the jack is equipped with a bolt 29.

[0011] The utility model discloses a working principle is:

[0012] The utility model discloses the lower extreme of swivel plate 2 is equipped with connecting arm 23, and connecting arm 23 is connected first gate line 24, and the starting end of first gate line 24 is connected circuit breaker, and the end of first gate line 24, second gate line 33 is connected respectively electromagnetic lock on the switchgear door. When circuit breaker ground pulls the starting end of first gate line 24, the right end of lock catch 21 rotates downward, and lock catch 21 hooks the left arm of V-shaped crank arm 3, and at this time interlocking device closes, and first gate line 24, second gate line 33 intercommunication sends signal, and the electromagnetic lock on the switchgear door obtains signal, and electromagnetic lock opens, and the switchgear door is opened.

[0013] After the overhaul or maintenance end, close the switchgear door, when circuit breaker is in the electrified state when closing, first gate line 24 is not pulled tight, and at this time under the resilience of first gate line 24, the right end of lock catch 21 rotates upward, and lock catch 21 and the left arm of V-shaped crank arm 3 are separated, and at this time interlocking device disconnects, and first gate line 24, second gate line 33 disconnects and can not send signal, and the electromagnetic lock on the switchgear door is in the closed state, and at this time the switchgear door can not be opened.

[0014] The utility model provides a novel circuit breaker and switchgear door's interlocking device. The interlocking device has the following beneficial effects:

[0015] (1) the utility model discloses interlocking device simple structure, through interlocking device connects circuit breaker and switchgear door together, ensures the security of switchgear door overhaul operation of opening.

[0016] (2) the right arm 32 of the utility model V-shaped crank arm and the starting end between second gate line 33 are equipped with first compression spring 34, and the right arm of V-shaped crank arm 3 extrudes first compression spring 34 downward, and under the resilience extrusion of first compression spring 34, the left arm 31 of V-shaped crank arm produces elastic extrusion to lock catch 21, and lock catch 21 and the left arm 31 of V-shaped crank arm can be stable closure.

[0017] (3) the left side of the utility model swivel plate 2 is equipped with manual lever 25. Through manual lever 25 can rotate swivel plate 2, increase the manual function of interlocking device, ensure the use safety of interlocking device.

[0018] (4) the utility model lock plate 27 can rotate around fixed shaft 26. The front side of lock plate 27 is equipped with second compression spring 28, and when lock plate 27 is in the clamping groove of lock support 13, second compression spring 28 extrudes swivel plate 2, and at this time swivel plate 2 can not be rotated, so that interlocking device can not be misoperation, further ensure the use safety of interlocking device.

[0019] (5) the utility model discloses the bolt 29 is fixed together with the lock plate 27 and the lock support 13, and the lock plate 27 does not separate the lock support 13. When pulling out the bolt 29, the lock plate 27 can be rotated, and the second compression spring 28 is separated from the rotating plate 2 to operate the interlocking device, further ensuring the use safety of the interlocking device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the front view when the interlocking device of a novel circuit breaker and switchgear door of the utility model is closed.

[0021] Figure 2 It is the bottom view when the interlocking device of a novel circuit breaker and switchgear door of the utility model is closed.

[0022] Figure 3 It is the front view when the interlocking device of a novel circuit breaker and switchgear door of the utility model is disconnected.

[0023] In the drawing: bottom plate-1, guide column-11, shaft pin-12, lock support-13, rotating plate-2, lock catch-21, guide hole-22, connecting arm-23, first brake line-24, manual lever-25, fixed shaft-26, lock plate-27, top plate-271, second compression spring-28, bolt-29, V-shaped crank arm-3, left arm of V-shaped crank arm-31, right arm of V-shaped crank arm-32, second brake line-33, first compression spring-34. DETAILED DESCRIPTION

[0024] In order to have more clear understanding on the technical features, purposes and effects of the utility model, now the specific implementation mode of the utility model is explained by referring to the drawings.

[0025] A novel circuit breaker and switchgear door interlocking device, its structure refers to the description accompanying drawings Figure 1 And Figure 2 As shown, it includes bottom plate 1, rotating plate 2, V-shaped crank arm 3. The bottom plate 1 is fixed on the switchgear door. Referring to the description accompanying drawings Figure 1As shown, the right end of the rotating plate 2 is provided with a lock catch 21, the rotating plate 2 is provided with a guide hole 22, the guide hole 22 is provided with a guide column 11, one end of the guide column 11 is arranged on the bottom plate 1. When the rotating plate 2 rotates, the guide hole 22 and the guide column 11 guide the rotation of the rotating plate 2 and connect the rotating plate 2 and the bottom plate 1 together. The right side of the rotating plate 2 is provided with a V-shaped crank arm 3, the V-shaped crank arm 3 is connected with the bottom plate 1 through a shaft pin 12, the shaft pin 12 is fixed on the bottom plate 1, the V-shaped crank arm 3 can rotate around the shaft pin 12, the left arm 31 of the V-shaped crank arm corresponds to the lock catch 21. The lower end of the rotating plate 2 is provided with a connecting arm 23, the connecting arm 23 connects a first gate line 24, in this embodiment, the connecting arm 23 and the first gate line 24 are connected together through a nut extrusion. The starting end of the first gate line 24 is connected with a circuit breaker, the circuit breaker includes three working states of closing, opening and grounding. The right arm 32 of the V-shaped crank arm is connected with the starting end of a second gate line 33, the ending ends of the first gate line 24 and the second gate line 33 are respectively connected with electromagnetic locks on the power distribution cabinet door.

[0026] The model of the circuit breaker used in this embodiment is ZN63-12 / 1250A-31.5KA, and the supplier is Chengdu Xuguang Electronic Co., Ltd.

[0027] For this embodiment, refer to the attached drawings of the specification Figure 1 As shown, when the circuit breaker is grounded, the circuit breaker pulls the starting end of the first gate line 24, the right end of the lock catch 21 rotates downward, the lock catch 21 hooks the left arm of the V-shaped crank arm 3, at this time, the interlocking device is closed, the first gate line 24 and the second gate line 33 are connected to send signals, the electromagnetic locks on the power distribution cabinet door receive the signals, the electromagnetic locks are opened, and the power distribution cabinet door is opened.

[0028] For this embodiment, refer to the attached drawings of the specification Figure 3 As shown, after the maintenance is completed, the power distribution cabinet door is closed, when the circuit breaker is in the closing state and is electrified, the first gate line 24 is not pulled tight, at this time, under the rebound force of the first gate line 24, the right end of the lock catch 21 rotates upward, the lock catch 21 is separated from the left arm of the V-shaped crank arm 3, at this time, the interlocking device is disconnected, the first gate line 24 and the second gate line 33 are disconnected and cannot send signals, the electromagnetic locks on the power distribution cabinet door are in the closed state, at this time, the power distribution cabinet door cannot be opened.

[0029] When the lock catch 21 hooks the left arm of the V-shaped crank arm 3, in order to tightly close the interlocking device, the above embodiment is further improved. As shown in the attached drawings of the specification Figure 1 As shown, a first compression spring 34 is arranged between the right arm 32 of the V-shaped crank arm and the starting end of the second gate line 33, the right arm of the V-shaped crank arm extrudes the first compression spring 34 downward, under the rebound extrusion force of the first compression spring 34, the left arm 31 of the V-shaped crank arm elastically extrudes the lock catch 21, and the lock catch 21 and the left arm 31 of the V-shaped crank arm can be stably closed.

[0030] In order to further ensure the safety of the interlocking device, the specific embodiment is further improved, referring to the attached Figure 1 and Figure 3 As shown in the figure, the left side of the rotating plate 2 is provided with a manual lever 25. The rotating plate 2 can be rotated through the manual lever 25, which increases the manual function of the interlocking device.

[0031] In order to further ensure the safe operation of the manual lever 25, referring to the attached Figure 1 and Figure 3 As shown in the figure, a lock bracket 13 is provided, which is fixed on the door of the power distribution cabinet. The rotating plate 2 is provided with a fixed shaft 26, and the right end of a lock plate 27 is provided with a shaft sleeve. The fixed shaft 26 is connected with the right end of the lock plate 27 through the shaft sleeve, and the lock plate 27 can rotate around the fixed shaft 26. The front side of the lock plate 27 is provided with a second compression spring 28. When the lock plate 27 is located in the clamping groove of the lock bracket 13, the second compression spring 28 presses the rotating plate 2. At this time, the rotating plate 2 cannot be rotated, so that the interlocking device cannot be misoperated.

[0032] In order to avoid the lock plate 27 from being separated from the lock bracket 13 under the pressing of the second compression spring 28, the specific embodiment is further improved. Referring to the attached Figures 1 to 3 As shown in the figure, the top of the lock plate 27 is provided with a top plate 271, and the lock bracket 13 is provided with a insertion hole, which is provided with a bolt 29. The bolt 29 fixes the lock plate 27 and the lock bracket 13 together, and the lock plate 27 does not separate from the lock bracket 13. When the bolt 29 is pulled out, the lock plate 27 can be rotated, and the second compression spring 28 separates from the rotating plate 2 to operate the interlocking device. The safety of the interlocking device is further ensured.

[0033] The above is only a specific embodiment of the utility model, and is not used to limit the scope of the utility model. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the utility model shall belong to the protection scope of the utility model. It should be noted that the components of the utility model are not limited to the above overall application, and the technical features described in the specification of the utility model can be selected alone or combined for use according to actual needs. Therefore, the utility model naturally covers other combinations and specific applications related to the utility model.

Claims

1. A new interlocking device for circuit breaker and switchgear cabinet door, characterized in that, It includes the bottom plate (1), the rotating plate (2), V type crank (3), the rotating plate (2) right end is equipped with the lock catch (21), is equipped with the guide hole (22) on the rotating plate (2), is equipped with the guide column (11) in the guide hole (22), the guide column (11) one end sets up on the bottom plate (1);The rotating plate (2) right side is equipped with V type crank (3), V type crank (3) and bottom plate (1) are connected through the axle pin (12), the axle pin (12) is fixed on the bottom plate (1), the left arm (31) of V type crank corresponds the lock catch (21);The rotating plate (2) lower extreme is equipped with the connecting arm (23), the connecting arm (23) connects the first gate line (24), the right arm (32) of V type crank connects the second gate line (33).

2. A new interlocking device of circuit breaker and switchgear door as claimed in claim 1, wherein, V type crank's right arm (32) and the second gate line (33) between them are equipped with the first compression spring (34).

3. A new interlocking device of circuit breaker and switchgear cubicle door as claimed in claim 1, wherein, The rotating plate (2) left side is equipped with the manual rod (25).

4. A new interlocking device of circuit breaker and switchgear cubicle door as claimed in claim 3, wherein, Be equipped with the lock support (13), the rotating plate (2) is equipped with the fixed axle (26), the fixed axle (26) and the lock plate (27) right end are connected through the shaft sleeve, the lock plate (27) front side is equipped with the second compression spring (28), when the lock plate (27) is located in the lock support (13) the slot, the second compression spring (28) extrudes the rotating plate (2).

5. A new interlocking device of circuit breaker and switchgear cubicle door as claimed in claim 4, wherein, The top of lock plate (27) is equipped with the top plate (271), and the lock support (13) is equipped with a jack on the top plate (271), and the jack is matched with a bolt (29).

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