Mechanical interlocking structure and dual-power ring main unit

Abstract

The utility model provides a mechanical interlocking structure and a dual-power ring main unit. The mechanical interlocking structure comprises a first circuit breaker, a first knob, a second circuit breaker, a second knob, a first locking mechanism and a second locking mechanism. The first circuit breaker is provided with a first output shaft and a first closing half shaft, and the first output shaft can rotate. The first knob is connected with the first closing half shaft and can drive the first closing half shaft to rotate. The second circuit breaker is provided with a second output shaft and a second closing half shaft. And the second knob is connected with the second closing half shaft. The first end of the first locking mechanism is connected with the first output shaft, the second end of the first locking mechanism is rotatably arranged on the second circuit breaker, and the first output shaft drives the first end of the first locking mechanism to rotate. The first end of the second locking mechanism is connected with the second output shaft, and the second end of the second locking mechanism is rotatably arranged on the first circuit breaker. According to the structure, manual forced operation or operation errors can be avoided, and the safety of the dual-power-supply ring main unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a mechanical interlocking structure and a dual-power supply ring network cabinet. Background Art

[0002] Users have increasingly stringent requirements for power supply reliability and power quality. Especially in important occasions such as data centers, hospitals, and transportation. Power supply equipment in important occasions usually has a main power supply and a backup power supply. When a power outage occurs in the main power supply, the backup power supply must be immediately put into use to restore power. In actual applications, the main power supply and backup power supply in the dual-power ring network cabinet cannot be connected at the same time, otherwise a safety accident will occur. In the related technology, power supply safety is ensured by setting an electrical interlock. The electrical interlock is that when one circuit breaker is closed, the closing trip coil of the other circuit breaker does not operate, so that the other circuit breaker cannot be closed. However, the electrical interlock method only electrically restricts the other circuit breaker from closing. If the other circuit breaker is closed by forced operation or manual error, a safety accident will occur, resulting in low safety of the dual-power ring network cabinet. Summary of the invention

[0003] One purpose of the utility model is to solve the problem in the prior art that in order to avoid safety accidents due to manual forced operation or operation error, a dual-power ring network cabinet with higher safety is provided.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A mechanical interlocking structure for a dual-power ring main unit, comprising:

[0006] A first circuit breaker, wherein the first circuit breaker has a first output shaft and a first closing half shaft, and the first output shaft is rotatable to switch the first circuit breaker between closing and opening;

[0007] A first knob, wherein the first knob is connected to the first closing half shaft and is capable of driving the first closing half shaft to rotate so as to switch the first circuit breaker between closing and opening;

[0008] A second circuit breaker, wherein the second circuit breaker has a second output shaft and a second closing half shaft, and the second output shaft is rotatable to switch the second circuit breaker between closing and opening;

[0009] A second knob, wherein the second knob is connected to the second closing half shaft and is capable of driving the second closing half shaft to rotate so as to switch the second circuit breaker between closing and opening;

[0010] a first locking mechanism, wherein the first end of the first locking mechanism is connected to the first output shaft, the second end of the first locking mechanism is rotatably disposed on the second circuit breaker, the first output shaft drives the first end of the first locking mechanism to rotate, and enables the second end of the first locking mechanism to rotate to a preset position, the second end of the first locking mechanism abuts against the second closing half shaft and blocks the second knob to limit the rotation of the second closing half shaft; and

[0011] A second locking mechanism, wherein the first end of the second locking mechanism is connected to the second output shaft, the second end of the second locking mechanism is rotatably disposed on the first circuit breaker, the second output shaft drives the first end of the second locking mechanism to rotate, and enables the second end of the second locking mechanism to rotate to a preset position, the second end of the second locking mechanism abuts against the first closing half-shaft and blocks the first knob to limit the rotation of the first closing half-shaft.

[0012] In one of the embodiments, the first locking mechanism includes a first transmission assembly and a first locking plate, the first end of the first transmission assembly is connected to the first output shaft, and the other end is connected to the first locking plate, the first locking plate is rotatably disposed on the second circuit breaker, the first output shaft can drive one end of the first transmission assembly to rotate, so that the other end of the first transmission assembly drives the first locking plate to rotate relative to the second circuit breaker, thereby causing the second end of the first locking plate to abut against the second closing half shaft and block the second knob.

[0013] In one embodiment, the first transmission assembly includes a first fixed seat, a first crank arm, a second crank arm and a first connecting rod, the first fixed seat is fixedly disposed on the first circuit breaker, the first end of the first crank arm is connected to the first output shaft, and the other end is hinged to one end of the second crank arm and one end of the first connecting rod, the other end of the second crank arm is hinged to the first fixed seat, and the other end of the first connecting rod is hinged to the first locking plate.

[0014] In one embodiment, the second locking mechanism includes a second transmission assembly and a second locking plate, a first end of the second transmission assembly is connected to the second output shaft, and the other end is connected to the second locking plate, the second locking plate is rotatably arranged on the first circuit breaker, and the second output shaft can drive one end of the second transmission assembly to rotate, so that the other end of the second transmission assembly drives the second locking plate to rotate relative to the first circuit breaker, thereby causing the second end of the second locking plate to abut against the first closing half shaft and block the first knob.

[0015] In one embodiment, the second transmission assembly includes a second fixed seat, a third crank arm, a fourth crank arm and a second connecting rod, the second fixed seat is fixedly disposed on the second circuit breaker, the first end of the third crank arm is connected to the second output shaft, and the other end is hinged to one end of the fourth crank arm and one end of the second connecting rod, the other end of the fourth crank arm is hinged to the second fixed seat, and the other end of the second connecting rod is hinged to the second locking plate.

[0016] In one embodiment, the first locking plate is a first sector plate, the center of the first sector plate is rotatably disposed on the second circuit breaker, and the arc-shaped outer periphery of the first sector plate abuts against the second closing half shaft; and / or

[0017] The second locking plate is a second sector plate, the center of which is rotatably disposed on the first circuit breaker, and the arc-shaped outer periphery of the second sector plate abuts against the first closing half shaft.

[0018] In one embodiment, the mechanical interlocking structure further includes a first limiter, the first limiter is connected to an end of the first closing half-shaft close to the first knob, and the second locking mechanism can abut against the first limiter to limit the rotation of the first closing half-shaft; and / or

[0019] The mechanical interlocking structure also includes a second limit member, which is connected to an end of the second closing half shaft close to the second knob, and the first locking mechanism can abut against the second limit member to limit the rotation of the second closing half shaft.

[0020] In one of the embodiments, the first circuit breaker includes a first mounting plate, the first mounting plate is provided with a first through hole and a second through hole, the first through hole is arranged opposite to the first knob, one end of the first closing half shaft is penetrated by the second through hole, the second locking plate and the first limiting member are located on one side of the first mounting plate, the second locking plate is rotatably provided on the first mounting plate, and the second locking plate can be rotated to a preset position to abut against the first limiting member and cover the first through hole.

[0021] In one of the embodiments, the second circuit breaker includes a second mounting plate, the second mounting plate is provided with a third through hole and a fourth through hole, the third through hole is arranged opposite to the second knob, one end of the second closing half shaft is penetrated by the fourth through hole, the first locking plate and the second limiting member are located on one side of the second mounting plate, the first locking plate is rotatably arranged on the second mounting plate, and the first locking plate can be rotated to a preset position to abut against the second limiting member and cover the three through holes.

[0022] In another embodiment, a dual-power ring main unit is provided, including a cabinet body and the above-mentioned mechanical interlocking structure, wherein the cabinet body includes a first switch cabinet and a second switch cabinet, the first circuit breaker of the mechanical interlocking structure is arranged in the first switch cabinet, and the second circuit breaker of the mechanical interlocking structure is arranged in the second switch cabinet.

[0023] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0024] In the utility model, the first output shaft rotates to a preset angle to complete the closing operation of the first circuit breaker. The first output shaft drives the first end of the first locking mechanism to rotate, and the second end of the first locking mechanism rotates to a preset position relative to the second circuit breaker to abut against the second closing half-shaft and block the second knob, limiting the rotation of the second closing half-shaft, thereby limiting the closing of the second circuit breaker. The second knob is blocked, and the operator cannot drive the second closing half-shaft to rotate through the second knob, and cannot close the second circuit breaker. The first locking mechanism limits the rotation of the second closing half-shaft, and the electric coil cannot drive the second closing half-shaft to rotate, and also cannot close the second circuit breaker. That is, when the first circuit breaker is closed, the first locking mechanism can limit the rotation of the second closing half-shaft, so that the second circuit breaker is in an open state.

[0025] The second output shaft rotates to a preset angle to complete the closing operation of the second circuit breaker. The second output shaft drives the first end of the second locking mechanism to rotate, and the second end of the second locking mechanism rotates to a preset position relative to the first circuit breaker to abut against the first closing half-shaft and block the first knob, limiting the rotation of the first closing half-shaft, thereby limiting the closing of the first circuit breaker. The first knob is blocked, and the operator cannot drive the first closing half-shaft to rotate through the first knob, and cannot close the first circuit breaker. The second locking mechanism limits the rotation of the first closing half-shaft, and the electric coil cannot drive the first closing half-shaft to rotate, and also cannot close the first circuit breaker. That is, when the second circuit breaker is closed, the second locking mechanism can limit the rotation of the first closing half-shaft, so that the first circuit breaker is in an open state. Therefore, the mechanical interlocking structure can avoid safety accidents due to manual forced operation or operation errors, thereby improving the safety of the dual-power ring network cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of a first circuit breaker being opened and a second circuit breaker being opened in a mechanical interlocking structure in an embodiment of the utility model.

[0027] Figure 2 It is a front view of a mechanical interlocking structure in an embodiment of the utility model, in which a first circuit breaker is closed and a second circuit breaker is opened.

[0028] Figure 3It is a front view of a first circuit breaker being opened and a second circuit breaker being closed in a mechanical interlocking structure in an embodiment of the utility model.

[0029] Figure 4 It is a structural schematic diagram of the first circuit breaker in the embodiment of the utility model.

[0030] The following are the descriptions of the reference numerals:

[0031] 10. Cabinet; 11. First switch cabinet; 12. Second switch cabinet;

[0032] 100, first circuit breaker; 110, first closing half shaft;

[0033] 200, first knob;

[0034] 300, second circuit breaker; 310, second closing half axis;

[0035] 400, second knob;

[0036] 500, first locking mechanism; 510, first transmission assembly; 511, first fixing seat; 512, first crank arm; 513, second crank arm; 514, first connecting rod; 520, first locking plate; 530, first stopper; 540, first mounting plate;

[0037] 600, second locking mechanism; 610, second transmission assembly; 611, second fixing seat; 612, third crank arm; 613, fourth crank arm; 614, second connecting rod; 620, second locking plate; 630, second position limiting member; 640, second mounting plate. DETAILED DESCRIPTION

[0038] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] In one embodiment, if Figure 1 As shown, a dual power supply ring main unit includes a cabinet 10 and a mechanical interlocking structure. The cabinet 10 includes a first switch cabinet 11 and a second switch cabinet 12. A first circuit breaker 100 of the mechanical interlocking structure is arranged in the first switch cabinet 11. A second circuit breaker 300 of the mechanical interlocking structure is arranged in the second switch cabinet 12. Specifically, the dual power supply ring main unit can be a 12kV dual power supply ring main unit.

[0041] In one embodiment, a mechanical interlocking structure includes a first circuit breaker 100 , a first knob 200 , a second circuit breaker 300 , a second knob 400 , a first locking mechanism 500 , and a second locking mechanism 600 .

[0042] Please refer to Figure 4 The first circuit breaker 100 has a first output shaft and a first closing half shaft 110. The first output shaft can rotate to switch the first circuit breaker 100 between closing and opening. The first closing half shaft 110 can rotate to switch the first circuit breaker 100 between closing and opening.

[0043] The first knob 200 is connected to the first closing half shaft 110 and can drive the first closing half shaft 110 to rotate so as to switch the first circuit breaker 100 between closing and opening. The operator can rotate the first knob 200 to operate the closing and opening of the first circuit breaker 100.

[0044] The second circuit breaker 300 has a second output shaft and a second closing half shaft 310. The second output shaft can rotate to switch the second circuit breaker 300 between closing and opening. The second closing half shaft 310 can rotate to switch the second circuit breaker 300 between closing and opening.

[0045] The second knob 400 is connected to the second closing half shaft 310 and can drive the second closing half shaft 310 to rotate so as to switch between closing and opening of the second circuit breaker 300. The operator can rotate the second knob 400 to operate the closing and opening of the second circuit breaker 300.

[0046] The first end of the first locking mechanism 500 is connected to the first output shaft. The second end of the first locking mechanism 500 is rotatably disposed on the second circuit breaker 300. The first output shaft drives the first end of the first locking mechanism 500 to rotate, and enables the second end of the first locking mechanism 500 to rotate to a preset position, and the second end of the first locking mechanism 500 abuts against the second closing half shaft 310 and blocks the second knob 400 to limit the rotation of the second closing half shaft 310.

[0047] During operation, the first output shaft rotates to a preset angle to complete the closing operation of the first circuit breaker 100. The first output shaft drives the first end of the first locking mechanism 500 to rotate. The second end of the first locking mechanism 500 rotates to a preset position to abut against the second closing half-shaft 310 and block the second knob 400, limiting the rotation of the second closing half-shaft 310, thereby limiting the closing of the second circuit breaker 300. That is, the second circuit breaker 300 is restricted to the open state. The second knob 400 is blocked, and the operator cannot drive the second closing half-shaft 310 to rotate through the second knob 400, and cannot close the second circuit breaker 300. The first locking mechanism 500 limits the rotation of the second closing half-shaft 310, and the electric coil cannot drive the second closing half-shaft 310 to rotate, and also cannot close the second circuit breaker 300. That is, when the first circuit breaker 100 is closed, the first locking mechanism 500 can limit the rotation of the second closing half shaft 310, so that the second circuit breaker 300 is in an open state. Figure 2 Status shown.

[0048] The first end of the second locking mechanism 600 is connected to the second output shaft, and the second end of the second locking mechanism 600 is rotatably disposed on the first circuit breaker 100. The second output shaft drives the first end of the second locking mechanism 600 to rotate, and enables the second end of the second locking mechanism 600 to rotate to a preset position. The second end of the second locking mechanism 600 abuts against the first closing half-shaft 110 and blocks the first knob 200 to limit the rotation of the first closing half-shaft 110.

[0049] During operation, the second output shaft rotates to a preset angle to complete the closing operation of the second circuit breaker 300. The second output shaft drives the first end of the second locking mechanism 600 to rotate. The second end of the second locking mechanism 600 rotates to a preset position to abut against the first closing half-shaft 110 and block the first knob 200, limiting the rotation of the first closing half-shaft 110, thereby limiting the closing of the first circuit breaker 100. That is, the first circuit breaker 100 is restricted to the open state. The first knob 200 is blocked, and the operator cannot drive the first closing half-shaft 110 to rotate through the first knob 200, and cannot close the first circuit breaker 100. The second locking mechanism 600 limits the rotation of the first closing half-shaft 110, and the electric coil cannot drive the first closing half-shaft 110 to rotate, and also cannot close the first circuit breaker 100. That is, when the second circuit breaker 300 is closed, the second locking mechanism 600 can limit the rotation of the first closing half shaft 110, so that the first circuit breaker 100 is in the open state. Figure 3 Therefore, the mechanical interlocking structure can avoid safety accidents caused by forced manual operation or operation errors, thereby improving the safety of the dual power supply ring network cabinet.

[0050] In this embodiment, the first locking mechanism 500 includes a first transmission assembly 510 and a first locking plate 520. The first end of the first transmission assembly 510 is connected to the first output shaft, and the other end is connected to the first locking plate 520. The first locking plate 520 is rotatably disposed on the second circuit breaker 300. The first output shaft can drive one end of the first transmission assembly 510 to rotate, so that the other end of the first transmission assembly 510 drives the first locking plate 520 to rotate relative to the second circuit breaker 300, thereby causing the second end of the first locking plate 520 to abut against the second closing half shaft 310 and block the second knob 400.

[0051] Specifically, the first locking plate 520 is a plate-shaped structure with a relatively large area, and can block the second knob 400 while resisting the second closing half shaft 310 .

[0052] Specifically, the first transmission assembly 510 includes a first fixed seat 511, a first crank arm 512, a second crank arm 513 and a first connecting rod 514. The first fixed seat 511 is fixedly arranged on the first circuit breaker 100. The first end of the first crank arm 512 is connected to the first output shaft. Among them, the first end of the first crank arm 512 is specifically fixedly connected to the first output shaft. The other end of the first crank arm 512 is hinged to one end of the second crank arm 513 and one end of the first connecting rod 514. The other end of the second crank arm 513 is hinged to the first fixed seat 511. The other end of the first connecting rod 514 is hinged to the first locking plate 520. It can be understood that the second crank arm 513 is located between the first crank arm 512 and the first fixed seat 511. The other end of the first crank arm 512 and one end of the second crank arm 513 are hinged to one end of the first connecting rod 514. In this way, the first locking plate 520 can be driven to rotate more stably.

[0053] More specifically, the first locking plate 520 is a first fan-shaped plate. The first fan-shaped plate is rotatably arranged on the second circuit breaker 300. One end of the first fan-shaped plate away from the center of the circle is hinged to the other end of the first connecting rod 514. The arc-shaped outer periphery of the first fan-shaped plate abuts against the second closing half shaft 310. The arc-shaped outer periphery of the first fan-shaped plate can stably limit the rotation of the second closing half shaft 310.

[0054] Specifically, the mechanical interlocking structure further includes a first limiter 530. The first limiter 530 is connected to one end of the first closing half shaft 110 close to the first knob 200. The second locking mechanism 600 can abut against the first limiter 530 to limit the rotation of the first closing half shaft 110. The first limiter 530 can be a plate-shaped structure. Among them, the first locking plate 520 abuts against the first limiter 530. That is, the arc-shaped outer periphery of the first fan-shaped plate abuts against the first limiter 530.

[0055] More specifically, the first circuit breaker 100 includes a first mounting plate 540. The first mounting plate 540 is provided with a first through hole and a second through hole. The first through hole is arranged relative to the first knob 200. It is understandable that the operator can reach into the first through hole to rotate the first knob 200. A second through hole is penetrated at one end of the first closing half shaft 110. The second locking plate 620 and the first limit member 530 are located on one side of the first mounting plate 540. The second locking plate 620 is rotatably arranged on the first mounting plate 540. The second locking plate 620 can be rotated to a preset position to abut against the first limit member 530 and block the first through hole. Specifically, the center of the first fan-shaped plate is rotatably hinged to the bottom of the first mounting plate 540.

[0056] When working, Figure 3As shown, the first output shaft rotates in the clockwise direction to drive one end of the first crank arm 512 to rotate in the clockwise direction. The other end of the first crank arm 512 and one end of the first connecting rod 514 both rotate in the clockwise direction. The center of the first fan-shaped plate rotates relative to the first mounting plate 540. The other end of the first connecting rod 514 drives the end of the first fan-shaped plate away from the center of the circle to rotate in the counterclockwise direction. It can be understood that the first connecting rod 514 drives the first fan-shaped plate to move in the direction close to the second stopper 630 and the second knob 400, so that the second fan-shaped plate abuts against the second stopper 630 and blocks the second knob 400.

[0057] In this embodiment, the second locking mechanism 600 includes a second transmission assembly 610 and a second locking plate 620. The first end of the second transmission assembly 610 is connected to the second output shaft, and the other end is connected to the second locking plate 620. The second locking plate 620 is rotatably arranged on the first circuit breaker 100. The second output shaft can drive one end of the second transmission assembly 610 to rotate, so that the other end of the second transmission assembly 610 drives the second locking plate 620 to rotate relative to the first circuit breaker 100, thereby causing the second end of the second locking plate 620 to abut against the first closing half shaft 110 and block the first knob 200.

[0058] Specifically, the second locking plate 620 is a plate-shaped structure with a relatively large area, and can block the first knob 200 while resisting the first closing half shaft 110 .

[0059] Specifically, the second transmission assembly 610 includes a second fixed seat 611, a third crank arm 612, a fourth crank arm 613 and a second connecting rod 614. The second fixed seat 611 is fixedly arranged on the second circuit breaker 300. The first end of the third crank arm 612 is connected to the second output shaft. Among them, the first end of the third crank arm 612 is specifically fixedly connected to the second output shaft. The other end of the third crank arm 612 is hinged to one end of the fourth crank arm 613 and one end of the second connecting rod 614. The other end of the fourth crank arm 613 is hinged to the second fixed seat 611. The other end of the second connecting rod 614 is hinged to the second locking plate 620. It can be understood that the fourth crank arm 613 is located between the third crank arm 612 and the second fixed seat 611. The other end of the third crank arm 612 and one end of the fourth crank arm 613 are hinged to one end of the second connecting rod 614. In this way, the second locking plate 620 can be driven to rotate more stably.

[0060] More specifically, the second locking plate 620 is a second fan-shaped plate. The second fan-shaped plate is rotatably arranged on the first circuit breaker 100. The second fan-shaped plate is hinged with one end away from the center of the circle and the other end of the second connecting rod 614. The arc-shaped outer periphery of the second fan-shaped plate abuts against the first closing half shaft 110. The arc-shaped outer periphery of the second fan-shaped plate can stably limit the rotation of the first closing half shaft 110.

[0061] Specifically, the mechanical interlocking structure further includes a second limiter 630. The second limiter 630 is connected to one end of the second closing half shaft 310 close to the second knob 400. The first locking mechanism 500 can abut against the second limiter 630 to limit the rotation of the second closing half shaft 310. The second limiter 630 can be a plate-shaped structure. Among them, the second locking plate 620 abuts against the second limiter 630. That is, the arc-shaped outer periphery of the second fan-shaped plate abuts against the second limiter 630.

[0062] More specifically, the second circuit breaker 300 includes a second mounting plate 640. The second mounting plate 640 is provided with a third through hole and a fourth through hole. The third through hole is arranged relative to the second knob 400. It is understandable that the operator can reach into the first through hole to rotate the first knob 200. A fourth through hole is penetrated at one end of the second closing half shaft 310, and the first locking plate 520 and the second limit member 630 are located on one side of the second mounting plate 640. The first locking plate 520 is rotatably arranged on the second mounting plate 640, and the first locking plate 520 can be rotated to a preset position to abut against the second limit member 630 and cover the three through holes. Specifically, the center of the first sector plate is rotatably hinged to the bottom of the first mounting plate 540.

[0063] When working, Figure 2 As shown, the second output shaft rotates in the clockwise direction to drive one end of the third crank arm 612 to rotate in the clockwise direction. The other end of the third crank arm 612 and one end of the second connecting rod 614 both rotate in the clockwise direction. The center of the second fan-shaped plate rotates relative to the second mounting plate 640. The other end of the second connecting rod 614 drives the end of the second fan-shaped plate away from the center of the circle to rotate in the counterclockwise direction. It can be understood that the second connecting rod 614 drives the first fan-shaped plate to rotate in the direction close to the first stopper 530 and the first knob 200, so that the first fan-shaped plate abuts against the first stopper 530 and blocks the first knob 200.

[0064] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in various forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A mechanical interlocking structure for a dual power supply ring main unit, characterized in that: include: A first circuit breaker, wherein the first circuit breaker has a first output shaft and a first closing half shaft, and the first output shaft is rotatable to switch the first circuit breaker between closing and opening; A first knob, wherein the first knob is connected to the first closing half shaft and is capable of driving the first closing half shaft to rotate so as to switch the first circuit breaker between closing and opening; A second circuit breaker, wherein the second circuit breaker has a second output shaft and a second closing half shaft, and the second output shaft is rotatable to switch the second circuit breaker between closing and opening; A second knob, wherein the second knob is connected to the second closing half shaft and is capable of driving the second closing half shaft to rotate so as to switch the second circuit breaker between closing and opening; a first locking mechanism, wherein the first end of the first locking mechanism is connected to the first output shaft, the second end of the first locking mechanism is rotatably disposed on the second circuit breaker, the first output shaft drives the first end of the first locking mechanism to rotate, and enables the second end of the first locking mechanism to rotate to a preset position, the second end of the first locking mechanism abuts against the second closing half shaft and blocks the second knob, so as to limit the rotation of the second closing half shaft; and A second locking mechanism, wherein the first end of the second locking mechanism is connected to the second output shaft, the second end of the second locking mechanism is rotatably disposed on the first circuit breaker, the second output shaft drives the first end of the second locking mechanism to rotate, and enables the second end of the second locking mechanism to rotate to a preset position, the second end of the second locking mechanism abuts against the first closing half-shaft and blocks the first knob to limit the rotation of the first closing half-shaft.

2. The mechanical interlocking structure according to claim 1, characterized in that: The first locking mechanism includes a first transmission assembly and a first locking plate. The first end of the first transmission assembly is connected to the first output shaft, and the other end is connected to the first locking plate. The first locking plate is rotatably arranged on the second circuit breaker. The first output shaft can drive one end of the first transmission assembly to rotate, so that the other end of the first transmission assembly drives the first locking plate to rotate relative to the second circuit breaker, thereby causing the second end of the first locking plate to abut against the second closing half shaft and block the second knob.

3. The mechanical interlocking structure according to claim 2, characterized in that: The first transmission assembly includes a first fixed seat, a first crank arm, a second crank arm and a first connecting rod. The first fixed seat is fixedly arranged on the first circuit breaker. The first end of the first crank arm is connected to the first output shaft, and the other end is hinged to one end of the second crank arm and one end of the first connecting rod. The other end of the second crank arm is hinged to the first fixed seat, and the other end of the first connecting rod is hinged to the first locking plate.

4. The mechanical interlocking structure according to claim 2, characterized in that: The second locking mechanism includes a second transmission assembly and a second locking plate. The first end of the second transmission assembly is connected to the second output shaft, and the other end is connected to the second locking plate. The second locking plate is rotatably arranged on the first circuit breaker. The second output shaft can drive one end of the second transmission assembly to rotate, so that the other end of the second transmission assembly drives the second locking plate to rotate relative to the first circuit breaker, thereby causing the second end of the second locking plate to abut against the first closing half shaft and block the first knob.

5. The mechanical interlocking structure according to claim 4, characterized in that: The second transmission assembly includes a second fixed seat, a third crank arm, a fourth crank arm and a second connecting rod. The second fixed seat is fixedly arranged on the second circuit breaker. The first end of the third crank arm is connected to the second output shaft, and the other end is hinged to one end of the fourth crank arm and one end of the second connecting rod. The other end of the fourth crank arm is hinged to the second fixed seat, and the other end of the second connecting rod is hinged to the second locking plate.

6. The mechanical interlocking structure according to claim 4, characterized in that: The first locking plate is a first sector plate, the center of the first sector plate is rotatably disposed on the second circuit breaker, and the arc-shaped outer periphery of the first sector plate abuts against the second closing half shaft; and / or The second locking plate is a second sector plate, the center of the second sector plate is rotatably disposed on the first circuit breaker, and the arc-shaped outer periphery of the second sector plate abuts against the first closing half shaft.

7. The mechanical interlocking structure according to claim 4, characterized in that: The mechanical interlocking structure further includes a first limiter, the first limiter is connected to an end of the first closing half shaft close to the first knob, and the second locking mechanism can abut against the first limiter to limit the rotation of the first closing half shaft; and / or The mechanical interlocking structure also includes a second limit member, which is connected to an end of the second closing half shaft close to the second knob, and the first locking mechanism can abut against the second limit member to limit the rotation of the second closing half shaft.

8. The mechanical interlocking structure according to claim 7, characterized in that: The first circuit breaker includes a first mounting plate, the first mounting plate is provided with a first through hole and a second through hole, the first through hole is arranged opposite to the first knob, one end of the first closing half shaft is penetrated by the second through hole, the second locking plate and the first limiting member are located on one side of the first mounting plate, the second locking plate is rotatably arranged on the first mounting plate, and the second locking plate can be rotated to a preset position to abut against the first limiting member and cover the first through hole.

9. The mechanical interlocking structure according to claim 7, characterized in that: The second circuit breaker includes a second mounting plate, the second mounting plate is provided with a third through hole and a fourth through hole, the third through hole is arranged opposite to the second knob, one end of the second closing half shaft is penetrated by the fourth through hole, the first locking plate and the second limiting member are located on one side of the second mounting plate, the first locking plate is rotatably arranged on the second mounting plate, and the first locking plate can be rotated to a preset position to abut against the second limiting member and cover the three through holes.

10. A dual power supply ring main unit, characterized in that: A cabinet and a mechanical interlocking structure as described in any one of claims 1 to 9, wherein the cabinet comprises a first switch cabinet and a second switch cabinet, the first circuit breaker of the mechanical interlocking structure is arranged in the first switch cabinet, and the second circuit breaker of the mechanical interlocking structure is arranged in the second switch cabinet.

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