Interlocking mechanism for double molded case circuit breaker

Abstract

The utility model discloses a kind of interlocking mechanisms for double moulded case circuit breaker, double moulded case circuit breaker includes the first moulded case circuit breaker and second moulded case circuit breaker being arranged in electrical cabinet, electrical cabinet includes cabinet, interlocking mechanism includes control handle, control handle rotation is arranged in cabinet, the inner end of control handle synchronous transmission connection first moulded case circuit breaker's rotating handle and second moulded case circuit breaker's rotating handle.The utility model in, the control handle of rotating cabinet outside, can make first moulded case circuit breaker's rotating handle and second moulded case circuit breaker's rotating handle synchronous rotation, to open and close gate;That is, only need to rotate control handle outside cabinet, can be opened and closed gate power off, to facilitate simplifying power-off process, and cabinet is no longer in electrified state, to facilitate improving safety performance when maintaining.

Description

Technical Field

[0001] This utility model belongs to the field of electrical cabinet technology, and in particular relates to an interlocking mechanism for a double molded case circuit breaker. Background Technology

[0002] Electrical cabinets are typically equipped with molded case circuit breakers (MCCBs) to ensure circuit safety and facilitate power outage maintenance. Currently, some electrical cabinets contain two MCBs. Therefore, during power outages, maintenance personnel must first open the cabinet door, then locate and rotate the handles of both MCBs sequentially. However, this process is cumbersome, and the electrical cabinet remains energized while the maintenance personnel are rotating the handles, posing a significant safety risk during the power outage process. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides an interlocking mechanism for double molded case circuit breakers, which simplifies the power-off process and improves safety performance.

[0004] The objective of this utility model is achieved through the following technical solution: An interlocking mechanism for a double molded case circuit breaker, the double molded case circuit breaker including a first molded case circuit breaker and a second molded case circuit breaker installed in an electrical cabinet, the electrical cabinet including a cabinet body, the interlocking mechanism including a control handle, the control handle being rotatably installed outside the cabinet body, the inner end of the control handle being synchronously connected to the rotating handle of the first molded case circuit breaker and the rotating handle of the second molded case circuit breaker.

[0005] The beneficial effects of adopting the above technical solution are as follows: rotating the control handle outside the cabinet can make the rotating handles of the first molded case circuit breaker and the second molded case circuit breaker rotate synchronously, so as to open and close the circuit breaker; that is, it is only necessary to rotate the control handle outside the cabinet to open and disconnect the power, which helps to simplify the power disconnection process, and the cabinet is no longer in a live state, which helps to improve the safety performance during maintenance.

[0006] Furthermore, the interlocking mechanism includes a first drive wheel, a second drive wheel, a third drive wheel, and a fourth drive wheel rotatably connected inside the cabinet. The inner end of the control handle is coaxially connected to the first drive wheel, the first drive wheel is driven by the second drive wheel, the rotary handle of the first molded case circuit breaker is coaxially connected to the third drive wheel, the rotary handle of the second molded case circuit breaker is coaxially connected to the fourth drive wheel, and the second drive wheel synchronously drives the third and fourth drive wheels.

[0007] The beneficial effects of adopting the above technical solution are as follows: rotating the rotary handle can drive the first transmission wheel to rotate; the rotation of the first transmission wheel can drive the second transmission wheel to rotate; the rotation of the second transmission wheel can drive the third transmission wheel and the fourth transmission wheel to rotate synchronously, so as to synchronously rotate the rotary handle of the first molded case circuit breaker and the rotary handle of the second molded case circuit breaker, thereby synchronously opening and closing the first molded case circuit breaker and the second molded case circuit breaker.

[0008] Furthermore, the interlocking mechanism includes a first connecting shaft rotatably connected to the cabinet body, one end of the first connecting shaft extending outside the cabinet body and coaxially fixedly connected to the control handle, and the other end of the first connecting shaft extending inside the cabinet body and coaxially fixedly connected to the first transmission wheel.

[0009] The beneficial effect of adopting the above technical solution is that the control handle outside the cabinet drives the first transmission wheel inside the cabinet to rotate coaxially.

[0010] Furthermore, the interlocking mechanism includes a second connecting shaft rotatably connected to the cabinet, with a second transmission wheel coaxially fixedly connected to the end of the second connecting shaft away from the cabinet.

[0011] The beneficial effect of adopting the above technical solution is that the second drive wheel is rotatably connected to the cabinet through the second drive shaft.

[0012] Furthermore, the interlocking mechanism includes a third connecting shaft, with the third transmission wheel and the rotating handle of the first molded case circuit breaker respectively coaxially fixedly connected to both ends of the third connecting shaft.

[0013] The beneficial effects of adopting the above technical solution are as follows: This configuration allows the third transmission wheel and the rotating handle of the first molded case circuit breaker to be coaxially and fixedly connected via the third connecting shaft.

[0014] Furthermore, the interlocking mechanism includes a fourth connecting shaft, with the two ends of the fourth connecting shaft coaxially and fixedly connected to the fourth transmission wheel and the rotating handle of the second molded case circuit breaker, respectively.

[0015] The beneficial effects of adopting the above technical solution are as follows: This configuration allows the fourth transmission wheel and the rotating handle of the second molded case circuit breaker to be coaxially and fixedly connected via the fourth connecting shaft.

[0016] Furthermore, the interlocking mechanism includes two first transmission rods, one end of which is hinged to a first transmission wheel, and the other end of which is hinged to a second transmission wheel. The hinge points of the two first transmission rods and the first transmission wheel are symmetrical about the axis of the first transmission wheel, and the hinge points of the two first transmission rods and the second transmission wheel are symmetrical about the axis of the second transmission wheel. The first transmission wheel, the second transmission wheel, and the two first transmission rods constitute a parallelogram mechanism.

[0017] The beneficial effect of adopting the above technical solution is that, with this configuration, the first transmission wheel can stably drive the second transmission wheel to rotate.

[0018] Furthermore, the interlocking mechanism includes two second transmission rods, the middle of which is hinged to a second transmission wheel, one end of which is hinged to a third transmission wheel, and the other end of which is hinged to a fourth transmission wheel. The hinge points of the two second transmission rods and the second transmission wheel are symmetrical about the axis of the second transmission wheel, the hinge points of the two second transmission rods and the third transmission wheel are symmetrical about the axis of the third transmission wheel, and the hinge points of the two second transmission rods and the fourth transmission wheel are symmetrical about the axis of the fourth transmission wheel. The second transmission wheel, the third transmission wheel, and the two second transmission rods constitute a parallelogram mechanism.

[0019] The beneficial effect of adopting the above technical solution is that, with this configuration, the second transmission wheel can stably drive the third and fourth transmission wheels to rotate synchronously.

[0020] Furthermore, the first transmission rod and the second transmission rod are respectively hinged to both ends of the second transmission wheel.

[0021] The beneficial effects of adopting the above technical solution are as follows: the first transmission rod and the second transmission rod are not located at the same end of the second transmission wheel, so as to avoid interference between the first transmission rod and the second transmission rod when the second transmission wheel rotates.

[0022] Furthermore, the axes of the first, second, third, and fourth transmission wheels are all parallel to each other.

[0023] The beneficial effects of this utility model are as follows: Rotating the control handle outside the cabinet allows the rotating handles of the first molded case circuit breaker and the second molded case circuit breaker to rotate synchronously for opening and closing. In other words, the power can be cut off simply by rotating the control handle outside the cabinet, which simplifies the power-off process and removes the energized state inside the cabinet, thus improving safety during maintenance. Attached Figure Description

[0024] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein: Figure 1 A schematic diagram of the structure of this utility model is shown; Figure 2 Showing Figure 1 Rear view; Figure 3 An isometric view of this utility model is shown; In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0025] Figure label: 1. Cabinet; 2. Control handle; 3. First molded case circuit breaker; 4. First transmission rod; 5. First transmission wheel; 6. Second transmission wheel; 7. Second transmission rod; 8. Second molded case circuit breaker; 9. First connecting shaft; 10. Third transmission wheel; 11. Third connecting shaft; 12. Fourth connecting shaft; 13. Fourth transmission wheel. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] This utility model provides an interlocking mechanism for a double molded case circuit breaker, such as... Figure 1-3 As shown, the double molded case circuit breaker includes a first molded case circuit breaker 3 and a second molded case circuit breaker 8 installed in the electrical cabinet. The electrical cabinet includes a cabinet body 1. The interlocking mechanism includes a control handle 2. The control handle 2 is rotatably installed outside the cabinet body 1. The inner end of the control handle 2 is synchronously connected to the rotating handle of the first molded case circuit breaker 3 and the rotating handle of the second molded case circuit breaker 8.

[0028] It is understandable that rotating the control handle 2 outside the cabinet 1 can cause the rotating handles of the first molded case circuit breaker 3 and the second molded case circuit breaker 8 to rotate synchronously, so as to open and close the circuit. In other words, it is only necessary to rotate the control handle 2 outside the cabinet 1 to open and disconnect the power, which helps to simplify the power disconnection process, and the cabinet 1 is no longer in a live state, which helps to improve the safety performance during maintenance.

[0029] It should be noted that the control handle 2 can be coaxially fixedly connected to an interlocking block; when the control handle 2 is not turned, the interlocking block locks the cabinet door to the cabinet body 1; when the control handle 2 is turned, the interlocking block rotates out of the cabinet door and no longer locks the cabinet door, and at this time the first molded case circuit breaker 3 and the second molded case circuit breaker 8 trip and disconnect the power; this setting ensures that when the cabinet door is opened for inspection or maintenance, the first molded case circuit breaker 3 and the second molded case circuit breaker 8 trip and disconnect the power, thereby further ensuring safety during maintenance.

[0030] In one embodiment, the interlocking mechanism includes a first transmission wheel 5, a second transmission wheel 6, a third transmission wheel 10, and a fourth transmission wheel 13 rotatably connected within the cabinet 1. The inner end of the control handle 2 is coaxially connected to the first transmission wheel 5, the first transmission wheel 5 is driven by the second transmission wheel 6, the rotating handle of the first molded case circuit breaker 3 is coaxially connected to the third transmission wheel 10, the rotating handle of the second molded case circuit breaker 8 is coaxially connected to the fourth transmission wheel 13, and the second transmission wheel 6 synchronously drives the third transmission wheel 10 and the fourth transmission wheel 13. The axes of the first transmission wheel 5, the second transmission wheel 6, the third transmission wheel 10, and the fourth transmission wheel 13 are all parallel to each other.

[0031] It is understandable that rotating the rotary handle can drive the first transmission wheel 5 to rotate; the rotation of the first transmission wheel can drive the second transmission wheel 6 to rotate; the rotation of the second transmission wheel 6 can drive the third transmission wheel 10 and the fourth transmission wheel 13 to rotate synchronously, so as to synchronously rotate the rotary handle of the first molded case circuit breaker 3 and the rotary handle of the second molded case circuit breaker 8, thereby synchronously opening and closing the first molded case circuit breaker 3 and the second molded case circuit breaker 8.

[0032] In one embodiment, the interlocking mechanism includes a first connecting shaft 9 rotatably connected to the cabinet 1. One end of the first connecting shaft 9 extends outside the cabinet 1 and is coaxially fixedly connected to the control handle 2. The other end of the first connecting shaft 9 extends inside the cabinet 1 and is coaxially fixedly connected to the first transmission wheel 5, so that the control handle 2 outside the cabinet 1 drives the first transmission wheel 5 inside the cabinet 1 to rotate coaxially.

[0033] In one embodiment, the interlocking mechanism includes a second connecting shaft rotatably connected to the cabinet 1, with one end of the second connecting shaft away from the cabinet 1 coaxially fixedly connected to a second transmission wheel 6, so that the second transmission wheel 6 is rotatably connected to the cabinet 1 via the second transmission shaft.

[0034] In one embodiment, the interlocking mechanism includes a third connecting shaft 11, with both ends of the third connecting shaft 11 coaxially fixedly connected to the third transmission wheel 10 and the rotating handle of the first molded case circuit breaker 3, so as to coaxially and fixedly connect the third transmission wheel 10 and the rotating handle of the first molded case circuit breaker 3 through the third connecting shaft 11; the interlocking mechanism includes a fourth connecting shaft 12, with both ends of the fourth connecting shaft 12 coaxially fixedly connected to the fourth transmission wheel 13 and the rotating handle of the second molded case circuit breaker 8, so as to coaxially and fixedly connect the fourth transmission wheel 13 and the rotating handle of the second molded case circuit breaker 8 through the fourth connecting shaft 12.

[0035] It should be noted that the lengths of the third connecting shaft 11 and the fourth connecting shaft 12 may be different, that is, the first molded case circuit breaker 3 and the second molded case circuit breaker 8 may be located at different positions along the length of the electrical cabinet, which is beneficial for synchronous control of the first molded case circuit breaker 3 and the second molded case circuit breaker 8 at different length positions in the electrical cabinet.

[0036] In one embodiment, the interlocking mechanism includes two first transmission rods 4 arranged along the width direction of the electrical cabinet. One end of each of the two first transmission rods 4 is hinged to a first transmission wheel 5, and the other end of each of the two first transmission rods 4 is hinged to a second transmission wheel 6. The hinge points of the two first transmission rods 4 and the first transmission wheel 5 are symmetrical about the axis of the first transmission wheel 5, and the hinge points of the two first transmission rods 4 and the second transmission wheel 6 are symmetrical about the axis of the second transmission wheel 6. The first transmission wheel 5, the second transmission wheel 6, and the two first transmission rods 4 form a parallelogram mechanism. With this arrangement, the first transmission wheel 5 can stably drive the second transmission wheel 6 to rotate.

[0037] It should be noted that since the two first transmission rods 4 are set along the width of the electrical cabinet, the actual control handles 2 of the first molded case circuit breaker 3 and the second molded case circuit breaker 8 can be moved to the right, thus avoiding the situation where the actual control handle is directly in front of the molded case circuit breaker in the traditional way.

[0038] In one embodiment, the interlocking mechanism includes two second transmission rods 7 arranged along the height direction of the electrical cabinet. The middle of each of the two second transmission rods 7 is hinged to a second transmission wheel 6. One end of each of the two second transmission rods 7 is hinged to a third transmission wheel 10, and the other end of each of the two second transmission rods 7 is hinged to a fourth transmission wheel 13. The hinge points of the two second transmission rods 7 and the second transmission wheel 6 are symmetrical about the axis of the second transmission wheel 6, the hinge points of the two second transmission rods 7 and the third transmission wheel 10 are symmetrical about the axis of the third transmission wheel 10, and the hinge points of the two second transmission rods 7 and the fourth transmission wheel 13 are symmetrical about the axis of the fourth transmission wheel 13. The second transmission wheel 6, the third transmission wheel 10, and the two second transmission rods 7 form a parallelogram mechanism. With this arrangement, the second transmission wheel 6 can stably drive the third transmission wheel 10 and the fourth transmission wheel 13 to rotate synchronously.

[0039] It should be noted that since the two second transmission rods 7 are set along the height direction of the electrical cabinet, it is possible to synchronously control the first molded case circuit breaker 3 and the second molded case circuit breaker 8 at different height positions in the electrical cabinet.

[0040] In one embodiment, the first transmission rod 4 and the second transmission rod 7 are respectively hinged to both ends of the second transmission wheel 6.

[0041] Understandably, this arrangement, where the first transmission rod 4 and the second transmission rod 7 are not located at the same end of the second transmission wheel 6, is intended to prevent interference between the first transmission rod 4 and the second transmission rod 7 when the second transmission wheel 6 rotates.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. An interlocking mechanism for a double molded case circuit breaker, wherein the double molded case circuit breaker includes a first molded case circuit breaker (3) and a second molded case circuit breaker (8) disposed in an electrical cabinet, the electrical cabinet including a cabinet body (1), characterized in that, Includes a control handle (2), which is rotatably disposed outside the cabinet (1). The inner end of the control handle (2) is synchronously connected to the rotating handle of the first molded case circuit breaker (3) and the rotating handle of the second molded case circuit breaker (8).

2. The interlocking mechanism for a double molded case circuit breaker according to claim 1, characterized in that, The control handle (2) includes a first drive wheel (5), a second drive wheel (6), a third drive wheel (10), and a fourth drive wheel (13) rotatably connected inside the cabinet (1). The inner end of the control handle (2) is coaxially connected to the first drive wheel (5). The first drive wheel (5) is driven by the second drive wheel (6). The rotating handle of the first molded case circuit breaker (3) is coaxially connected to the third drive wheel (10). The rotating handle of the second molded case circuit breaker (8) is coaxially connected to the fourth drive wheel (13). The second drive wheel (6) is synchronously driven by the third drive wheel (10) and the fourth drive wheel (13).

3. The interlocking mechanism for a double molded case circuit breaker according to claim 2, characterized in that, It includes a first connecting shaft (9) rotatably connected to the cabinet (1), one end of the first connecting shaft (9) extends outside the cabinet (1) and is coaxially fixedly connected to the control handle (2), and the other end of the first connecting shaft (9) extends inside the cabinet (1) and is coaxially fixedly connected to the first transmission wheel (5).

4. The interlocking mechanism for a double molded case circuit breaker according to claim 2, characterized in that, It includes a second connecting shaft rotatably connected to the cabinet (1), and the end of the second connecting shaft away from the cabinet (1) is coaxially fixedly connected to the second transmission wheel (6).

5. The interlocking mechanism for a double molded case circuit breaker according to claim 2, characterized in that, Includes a third connecting shaft (11), the two ends of which are coaxially fixedly connected to the third transmission wheel (10) and the rotating handle of the first molded case circuit breaker (3).

6. The interlocking mechanism for a double molded case circuit breaker according to claim 2, characterized in that, It includes a fourth connecting shaft (12), the two ends of which are coaxially fixedly connected to the fourth transmission wheel (13) and the rotating handle of the second molded case circuit breaker (8).

7. The interlocking mechanism for a double molded case circuit breaker according to claim 2, characterized in that, The device includes two first transmission rods (4), one end of which is hinged to the first transmission wheel (5), and the other end of which is hinged to the second transmission wheel (6). The hinge points of the two first transmission rods (4) and the first transmission wheel (5) are symmetrical about the axis of the first transmission wheel (5), and the hinge points of the two first transmission rods (4) and the second transmission wheel (6) are symmetrical about the axis of the second transmission wheel (6). The first transmission wheel (5), the second transmission wheel (6), and the two first transmission rods (4) constitute a parallelogram mechanism.

8. The interlocking mechanism for a double molded case circuit breaker according to claim 7, characterized in that, The mechanism includes two second transmission rods (7), the middle of which is hinged to the second transmission wheel (6). One end of each second transmission rod (7) is hinged to the third transmission wheel (10), and the other end of each second transmission rod (7) is hinged to the fourth transmission wheel (13). The hinge points of the two second transmission rods (7) and the second transmission wheel (6) are symmetrical about the axis of the second transmission wheel (6). The hinge points of the two second transmission rods (7) and the third transmission wheel (10) are symmetrical about the axis of the third transmission wheel (10). The hinge points of the two second transmission rods (7) and the fourth transmission wheel (13) are symmetrical about the axis of the fourth transmission wheel (13). The second transmission wheel (6), the third transmission wheel (10), and the two second transmission rods (7) constitute a parallelogram mechanism.

9. The interlocking mechanism for a double molded case circuit breaker according to claim 8, characterized in that, The first transmission rod (4) and the second transmission rod (7) are respectively hinged to both ends of the second transmission wheel (6).

10. The interlocking mechanism for a double molded case circuit breaker according to claim 2, characterized in that, The axes of the first transmission wheel (5), the second transmission wheel (6), the third transmission wheel (10), and the fourth transmission wheel (13) are all parallel to each other.

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