A circuit breaker cabinet door platform interlocking device

Abstract

The present invention belongs to the field of medium-voltage complete sets of equipment, and specifically relates to a circuit breaker cabinet door platform interlocking device, comprising a movable baffle, an interlocking member pushing device, an interlocking member, a baffle resetting device and an interlocking member resetting device, wherein the movable baffle has a first position for shielding a handle operating hole and a second position for exposing the handle operating hole, the movable baffle moves between the first position and the second position, the baffle resetting device is connected to the movable baffle, so that the movable baffle always has a tendency to move toward the first position, the interlocking member pushing device is arranged on the movable baffle and moves synchronously with the movable baffle, the interlocking member is arranged on the platform and moves along the platform, and comprises a driving end and a limiting end, when the movable baffle is in the first position, the limiting end cooperates with the interlocking plate to limit; when the movable baffle is in the second position, the interlocking member pushing device conflicts with the driving end, and the limiting end is away from the interlocking plate; the interlocking member is also provided with an interlocking member resetting device, so that the interlocking member always has a tendency to move toward the interlocking plate.

Description

Technical Field

[0001] The invention belongs to the field of medium voltage complete equipment, and in particular relates to a circuit breaker cabinet door platform interlocking device. Background Art

[0002] At present, there is no mechanical interlock between the circuit breaker and the switch cabinet in the prior art. Regardless of whether the switch cabinet is in the open or closed state, the driving mechanism in the switch cabinet can be driven by the handle to switch the circuit breaker back and forth between various positions. When the circuit breaker reaches the working position, the circuit breaker will be closed, causing the circuit to be energized. It is easy for operators to mistakenly enter the energized interval, which can easily cause circuit power outages and major accidents such as personal safety.

[0003] In order to solve this problem, the utility model patent with the existing patent application number CN201420468685.8 discloses a circuit breaker chassis interlocking device for a switch cabinet, wherein a strip opening is provided on the middle partition in the cabinet along the length direction of the slide rail, and an L-shaped connecting plate is fixedly connected to one side of the strip opening below the middle partition, and a baffle is hinged on the connecting plate, the upper end of the baffle extends above the middle partition, and a push rod is connected to the lower part of the baffle, one end of the push rod extends to the front of the lower flap, and a tension spring is connected between the upper part of the baffle and the position on the middle partition different from the push rod; when the cabinet door of the switch cabinet is open, the baffle is in a vertical state under the pull of the tension spring, blocking the circuit breaker chassis from moving to the working position; when the cabinet door is closed in place, the cabinet door presses the push rod to drive the baffle to rotate, and the baffle does not block the circuit breaker chassis, so the circuit breaker can be moved to the working position. This patent still has problems such as the push rod being easily touched by mistake, and the handle can be inserted into the cabinet at any time, which may violently drive the circuit breaker chassis. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention proposes a circuit breaker cabinet door platform interlocking device, which cannot operate the driving mechanism when the door is open. When the door is closed, the device of the present invention must be operated to insert the handle and drive the circuit breaker to move, which effectively solves the problem of misoperation.

[0005] The specific technical solutions of the present invention are as follows:

[0006] A circuit breaker cabinet door platform interlocking device comprises a movable baffle, an interlocking member pushing device, an interlocking member, a baffle resetting device and an interlocking member resetting device.

[0007] The movable baffle has a first position for shielding the handle operation hole and a second position for exposing the handle operation hole. The movable baffle moves back and forth between the first position and the second position along the cabinet door. The baffle reset device is connected to the movable baffle and makes the movable baffle always have a tendency to move toward the first position.

[0008] The interlock member pushing device is arranged on the movable baffle and moves synchronously with the movable baffle. The interlock member is arranged on the platform and moves along the platform. The interlock member includes a driving end and a limiting end. When the movable baffle is in the first position, the limiting end cooperates with the interlocking plate to limit it; when the movable baffle is in the second position, the interlock member pushing device abuts against the driving end and pushes the limiting end away from the interlocking plate.

[0009] The interlock member is further provided with an interlock member reset device, which makes the interlock member always have a tendency to move towards the interlocking plate.

[0010] Wherein, the movable baffle is arranged on the inner side of the cabinet door facing the cabinet body, or on the outer side of the cabinet door, or inside the cabinet door.

[0011] Wherein, the interlock device further includes a movable baffle driving device, and the movable baffle driving device is a handle connected to the movable baffle.

[0012] Wherein, when the movable baffle is arranged inside or inside the cabinet door, a driving device guiding groove is further arranged on the cabinet door, and the movable baffle driving device extends out from the driving device guiding groove and moves along the driving device guiding groove.

[0013] Wherein, the interlock device further includes at least one movable baffle guiding structure.

[0014] Wherein, the movable baffle guiding structure includes a bolt and a movable baffle guiding groove matching with it. One of the bolt and the movable baffle guiding groove is arranged on the cabinet door, and the other is arranged on the movable baffle. The bolt connects the movable baffle to the cabinet door, and the bolt moves along the movable baffle guiding groove.

[0015] Wherein, the interlock device further includes a movable baffle supporting device.

[0016] Wherein, the interlock device further includes an interlock member bracket, the interlock member moves on the interlock member bracket, and one end of the interlock member reset device is connected to the interlock member, and the other end is fixed to the interlock member bracket.

[0017] Wherein, the interlock member is in a "U" shape, the whole interlock member is arranged below the platform, and a first limiting hole and a second limiting hole are arranged on the platform. The driving end and the limiting end respectively extend above the platform through the first limiting hole and the second limiting hole on the platform.

[0018] Wherein, the baffle reset device and the interlock member reset device are springs. Beneficial effects

[0019] The present invention achieves the technical effect that the circuit breaker cannot be driven in the open door state and can only be operated after the door is closed through the movable baffle, the interlocking member pushing device, the interlocking member, the baffle resetting device and the interlocking member resetting device, effectively solves the problem of misoperation and improves the safety of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the present invention

[0021] Figure 2 A top view of the present invention

[0022] Figure 3 Schematic diagram of the inner side of the cabinet door of the present invention

[0023] Figure 4 Schematic diagram of the outer side of the cabinet door of the present invention

[0024] Figure 5 Schematic diagram of the present invention from the perspective of the inside of the cabinet to the outside of the cabinet

[0025] FIG. 6 is another schematic diagram of the inner side of the cabinet door of the present invention DETAILED DESCRIPTION

[0026] The circuit breaker cabinet door platform interlocking device of the present invention is installed inside the switch cabinet. Figure 1 , Figure 2 As shown, it includes a cabinet door 1 and a platform 5, on which a circuit breaker driving mechanism 8 is provided that can move toward or away from the cabinet door 1, and on which a locking plate 81 is provided that is used to realize the grounding interlock of the existing circuit breaker in the switch cabinet. Figure 4 The figure shows a schematic diagram of the cabinet door 1 observed from outside the cabinet. The cabinet door 1 is provided with a handle operating hole 11. When the cabinet door 1 is closed, the handle drives the circuit breaker drive mechanism 8 through the handle operating hole 11. The operating handle can operate the circuit breaker drive mechanism 8 to move the circuit breaker between multiple positions.

[0027] The circuit breaker cabinet door platform interlocking device of the present invention is as follows: Figures 1 to 6As shown, it includes a movable baffle 2, an interlocking member pushing device 31, an interlocking member 3, a baffle reset device 4 and an interlocking member reset device 34. The movable baffle 2 has a first position for blocking the handle operating hole 11 and a second position for leaving the handle operating hole 11. The movable baffle 2 can move back and forth between the first position and the second position along the cabinet door 1. The baffle reset device 4 is connected to the movable baffle 2 and makes the movable baffle 2 always have a tendency to move toward the first position. The interlocking member pushing device 31 is arranged on the movable baffle 2 and can move synchronously with the movable baffle 2. The interlocking member 3 is arranged on the platform 5 and can move along the platform 5. The interlocking member 3 includes a driving end 32 and a limiting end 33. When the movable baffle 2 is in the first position, the limiting end 33 cooperates with the interlocking plate 81 to limit it, and the interlocking plate 81 cannot move freely. When the movable baffle 2 is in the second position, the interlocking member pushing device 31 conflicts with the driving end 32, pushing the limiting end 33 away from the interlocking plate 81, and the interlocking plate 81 can move freely. The interlocking member 3 is also provided with an interlocking member resetting device 34, and the interlocking member resetting device 34 makes the interlocking member 3 always have a tendency to move toward the interlocking plate 81.

[0028] By means of the circuit breaker cabinet door platform interlocking device set as above, when the cabinet door 1 is opened, the interlocking member 3 cooperates with the interlocking member resetting device 34 so that the limiting end 33 limits the interlocking plate 81, resulting in the circuit breaker driving mechanism 8 being unable to be driven. Figure 3 As shown in FIG. 1 , the movable baffle 2 in the first position blocks the handle operation hole 11 on the cabinet door 1, and the handle cannot be inserted into the cabinet, so the circuit breaker drive mechanism 8 cannot be driven. When the movable baffle 2 is moved to the second position, as shown in FIG. Figure 6 As shown, the handle operating hole 11 is not blocked. At the same time, the limiting end 33 of the interlocking member 3 releases the limiting of the interlocking plate 81, and the handle can pass through the handle operating hole 11 to drive the circuit breaker driving mechanism 8, which solves the problems existing in the prior art.

[0029] It is obvious that the movable baffle 2 can be set on the inner side of the cabinet door 1 facing the cabinet body, or on the outer side of the cabinet door 1, or even on the inside of the cabinet door 1, as long as the interlocking member pushing device 31 arranged thereon can drive the interlocking member 3 on the platform 5.

[0030] Specifically, the circuit breaker cabinet door platform interlocking device described in the present application may also include a movable baffle driving device for driving the movable baffle 2 to move between the first position and the second position. Figure 4As shown, when the movable baffle 2 is arranged inside the cabinet door 1, a driving device guiding groove 12 is further arranged on the cabinet door 1. The movable baffle driving device extends out from the driving device guiding groove 12 and can move along the driving device guiding groove 12. Specifically, in this embodiment, as Figure 2 , Figure 3 , Figure 4 shown, the movable baffle driving device is a handle 22 connected to the movable baffle 2.

[0031] It should be noted that this application further includes at least one movable baffle guiding structure 23. The movable baffle guiding structure 23 enables the movable baffle 2 to reciprocate between a first position and a second position along a unified path, improving the stability of the movable baffle 2. Specifically, in this embodiment, as Figure 1 , Figure 3 shown, the movable baffle guiding structure 23 includes a bolt and a movable baffle guiding groove matching therewith. One of the bolt and the movable baffle guiding groove is arranged on the cabinet door 1, and the other is arranged on the movable baffle 2. The bolt connects the movable baffle 2 to the cabinet door 1, and the bolt can move along the movable baffle guiding groove.

[0032] Specifically, this application further includes a movable baffle supporting device 24 for providing support for the movable baffle 2. Specifically, as Figure 3 shown, in this embodiment, the movable baffle supporting device 24 is a cabinet door welding part, and a movable baffle guiding structure 23 can also be arranged on the cabinet door welding part.

[0033] Specifically, in this embodiment, the baffle reset device 4 is a spring. One end of the spring is fixed to the cabinet door 1, and the other end is connected to the movable baffle 2.

[0034] Specifically, in this embodiment, one end of the interlock reset device 34 is connected to the interlock 3, and the other end is fixed to the platform 5.

[0035] Preferably, the circuit breaker cabinet door platform interlock device of this application may further include an interlock bracket 6. The interlock 3 can move on the interlock bracket 6. One end of the interlock reset device 34 is connected to the interlock 3, and the other end is fixed to the interlock bracket 6.

[0036] Specifically, in order to make more full use of the space inside the cabinet, as Figure 5 shown, the interlock 3 is in a "U" shape, and the whole interlock 3 is arranged below the platform 5, as Figure 2As shown, only the driving end 32 and the limiting end 33 extend above the platform 5 through the first limiting hole 51 and the second limiting hole 52 on the platform 5 respectively, so that the driving end 32 can be connected to the interlocking member pushing device 31 above the platform 5, and the limiting end 33 can limit the interlocking plate 81.

[0037] The circuit breaker cabinet door platform interlocking device of the present application, when the circuit breaker is to be driven, the cabinet door 1 must be closed first, and the movable baffle 2 is moved from the initial first position to the second position by pulling the handle 22, so that the circuit breaker is driven. Figure 6 As shown, the handle operation hole 11 on the cabinet door 1 is exposed, during which the movable baffle guide structure 23 always plays a guiding role, and the movable baffle support device 24 always provides support for the movable baffle 2 to ensure the smooth movement of the movable baffle 2. Due to the movement of the movable baffle 2, the interlocking member pushing device 31 thereon also moves together, and is connected with the driving end 32 during this process, so that the limit end 33 moves out from the interlocking plate 81, the interlocking plate 81 can move freely, and the circuit breaker driving mechanism 8 can be freely driven by the handle.

Claims

1. A circuit breaker cabinet door platform interlocking device, installed inside a switch cabinet, the switch cabinet comprising a cabinet door (1) and a platform (5), the platform (5) being provided with a circuit breaker drive mechanism (8) that can move toward or away from the cabinet door (1), the circuit breaker drive mechanism (8) being provided with a locking plate (81), the cabinet door (1) being provided with a handle operating hole (11), when the cabinet door (1) is closed, the circuit breaker drive mechanism (8) is driven through the handle operating hole (11), characterized in that: The interlock device includes a movable baffle (2), an interlock member pushing device (31), an interlock member (3), a baffle reset device (4), and an interlock member reset device (34). The movable baffle (2) has a first position that blocks the handle operation hole (11) and a second position that exposes the handle operation hole (11). The movable baffle (2) moves back and forth between the first position and the second position along the cabinet door (1). The baffle reset device (4) is connected to the movable baffle (2) and makes the movable baffle (2) always tend to move to the first position. The interlock member pushing device (31) is arranged on the movable baffle (2) and moves synchronously with the movable baffle (2). The interlock member (3) is arranged on the platform (5) and moves along the platform (5). The interlock member (3) includes a driving end (32) and a limiting end (33). When the cabinet door (1) is closed and the movable baffle (2) is in the first position, the limiting end (33) cooperates with the interlocking plate (81) to limit it. When the movable baffle (2) is in the second position, the interlock member pushing device (31) abuts against the driving end (32) and pushes the limiting end (33) away from the interlocking plate (81). The interlock member (3) is also provided with an interlock member reset device (34), which makes the interlock member (3) always tend to move towards the interlocking plate (81). When the cabinet door (1) is opened, the interlock member (3) cooperates with the interlock member reset device (34) to make the limiting end (33) limit the interlocking plate (81). The interlock member (3) is in a "U" shape. The interlock member (3) is integrally arranged below the platform (5). The platform (5) is provided with a first limiting hole (51) and a second limiting hole (52). The driving end (32) and the limiting end (33) respectively extend above the platform (5) through the first limiting hole (51) and the second limiting hole (52) on the platform (5).

2. The interlocking device according to claim 1, characterized in that: The movable baffle (2) is arranged on the inner side of the cabinet door (1) facing the cabinet body, or on the outer side of the cabinet door (1), or inside the cabinet door (1).

3. The interlocking device according to claim 1 or 2, characterized in that: It further includes a movable baffle driving device, and the movable baffle driving device is a handle (22) connected to the movable baffle (2).

4. The interlocking device according to claim 3, characterized in that: When the movable baffle (2) is arranged inside or within the cabinet door (1), the cabinet door (1) is further provided with a driving device guiding groove (12). The movable baffle driving device extends out of the driving device guiding groove (12) and moves along the driving device guiding groove (12).

5. The interlocking device according to claim 1, characterized in that: It further includes at least one movable baffle guiding structure (23).

6. The interlocking device according to claim 5, characterized in that: The movable baffle guiding structure (23) includes a bolt and a movable baffle guiding groove matching with it. One of the bolt and the movable baffle guiding groove is arranged on the cabinet door (1), and the other is arranged on the movable baffle (2). The bolt connects the movable baffle (2) to the cabinet door (1), and the bolt moves along the movable baffle guiding groove.

7. The interlocking device according to claim 1, characterized in that: It further includes a movable baffle supporting device (24).

8. The interlocking device according to claim 1, characterized in that: It also comprises an interlocking member bracket (6), the interlocking member (3) moves on the interlocking member bracket (6), and the interlocking member resetting device (34) has one end connected to the interlocking member (3) and the other end fixed to the interlocking member bracket (6).

9. The interlocking device according to claim 1, characterized in that: The baffle plate resetting device (4) and the interlocking member resetting device (34) are springs.

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