CN112447426B - Mechanical interlocking device and dual-power supply system - Google Patents
Mechanical interlocking device and dual-power supply system Download PDFInfo
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- CN112447426B CN112447426B CN201910834000.4A CN201910834000A CN112447426B CN 112447426 B CN112447426 B CN 112447426B CN 201910834000 A CN201910834000 A CN 201910834000A CN 112447426 B CN112447426 B CN 112447426B
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- swing arm
- plate
- base plate
- mechanical interlock
- push rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Embodiments of the present disclosure relate to a mechanical interlock and a dual power supply system. The mechanical interlock includes: a bottom plate disposed along a first direction; a first push rod and a second push rod, each extending through the base plate in a second direction perpendicular to the first direction, the first push rod adapted to be coupled to the main shaft of the first circuit breaker for movement in the second direction, the second push rod adapted to be coupled to the main shaft of the second circuit breaker for movement in the second direction; the first pushing plate and the second pushing plate respectively comprise a first side coupled to the corresponding pushing rod and a second side opposite to the first side, and are suitable for moving along a second direction together with the corresponding pushing rod; the first swing arm and the second swing arm are respectively connected to the bottom plate in a rotating way and are suitable for being pushed by the second side of the corresponding pushing plate to rotate relative to the bottom plate; and a swing arm connecting rod connected between the first swing arm and the second swing arm.
Description
Technical Field
Embodiments of the present disclosure relate generally to mechanical interlock mating of circuit breakers, and more particularly, to a mechanical interlock and dual source power supply system.
Background
In low voltage power distribution power supply systems (such as factories, schools, hospitals, etc.), dual power supplies (i.e., main power supply and backup power supply) are generally used to supply power to ensure the reliability of power required for daily production or operation. However, the two power supplies of the dual power supply system are not allowed to supply power simultaneously, otherwise, a short circuit is caused, and serious safety accidents are caused. Therefore, the circuit breakers respectively installed on the two power supply circuits generally adopt double protection measures of electric interlocking and mechanical interlocking to ensure the safety of the circuits, so that when one circuit breaker is in a closing state, the other circuit breaker cannot be in a closing state, and therefore the two circuit breakers are prevented from being in a closing state at the same time.
The mechanical interlocking device of the circuit breaker in the current market is only suitable for interlocking cooperation between two identical circuit breakers, but cannot realize interlocking between two different circuit breakers, because the circuit breakers of different types have the conditions of inconsistent closing strokes of the main shaft, inconsistent opening positions of the bottom of the circuit breaker and the like.
Thus, there is a need for a mechanical interlock that is simple in structure, low in cost, and that can achieve an interlocking fit between two different circuit breakers.
Disclosure of Invention
It is an object of the present disclosure to provide a mechanical interlock and dual source power supply system that at least partially addresses the above-described problems of the prior art.
According to one aspect of the present disclosure, there is provided a mechanical interlock comprising: a bottom plate disposed along a first direction; a first push rod and a second push rod, each extending through the base plate in a second direction perpendicular to the first direction, the first push rod being adapted to be interlocked with a main shaft of a first circuit breaker to move in the second direction, the second push rod being adapted to be interlocked with a main shaft of a second circuit breaker to move in the second direction; a first pusher plate and a second pusher plate, each comprising a first side coupled to a respective pusher bar and a second side opposite the first side, and adapted to move with the respective pusher bar along the second direction; a first swing arm and a second swing arm, each rotatably connected to the base plate, and adapted to be pushed by a second side of a corresponding push plate to rotate relative to the base plate; and a swing arm connecting rod connected between the first swing arm and the second swing arm.
In the embodiment according to the disclosure, the first pushing plate and the second pushing plate have a large area along the first direction and can bear corresponding pushing rods, so that the mechanical interlocking device can adapt to a certain degree of position adjustment of the pushing rods in the first direction, and can be suitable for circuit breakers with different types and different bottom opening positions.
In one embodiment, the mechanical interlock further comprises: a first guide means adapted to guide the first push plate to move in the second direction; and a second guide means adapted to guide the second push plate to move in the second direction. In such an embodiment, the first and second guiding means can be employed to reliably guide the movement of the respective pusher plates in the second direction while avoiding sliding of the pusher plates in the first direction.
In one embodiment, each of the first and second guide means comprises: the guide rods are arranged on the bottom plate at intervals along the second direction; and a pair of sliding members slidably sleeved on the respective guide bars and supporting the respective push plates, respectively. In such an embodiment, the cooperation of the slider and the guide bar can be employed to reliably guide the movement of the respective pusher plate in the second direction.
In one embodiment, the first swing arm includes: a first rotating shaft rotatably connected to the bottom plate; and a first driving part adapted to be pushed by a second side of the first push plate in the second direction to rotate the first swing arm with respect to the base plate; and the second swing arm includes: the second rotating shaft is rotatably connected to the bottom plate; and a second driving part adapted to be pushed by a second side of the second push plate along the second direction to rotate the second swing arm relative to the base plate. In such an embodiment, the first swing arm and the second swing arm are simple in structure, easy to manufacture, and stable and reliable.
In one embodiment, the distance between the first rotation shaft and the first driving part is different from the distance between the second rotation shaft and the second driving part. In such an embodiment, the arm lengths of the first swing arm and the second swing arm are different such that the displacement strokes of the first push rod and the second push rod in the second direction are not uniform. The ratio of the displacement strokes of the first push rod and the second push rod along the second direction can be consistent with the ratio of the arm lengths of the first swing arm and the second swing arm, so that the mechanical interlocking device is suitable for two circuit breakers with different main shaft closing strokes.
In one embodiment, the first and second driving parts are located outside the first and second rotating shafts in the first direction. This arrangement of the first drive portion and the second drive portion makes the mechanical interlock simple in construction and easy to implement.
In one embodiment, the first swing arm further comprises a third shaft rotatably connected to the swing arm connecting rod; and the second swing arm further comprises a fourth rotating shaft which is rotatably connected to the swing arm connecting rod. In such an embodiment, the first swing arm and the second swing arm may be reliably connected to the swing arm connecting rod, respectively, through the third and fourth rotating shafts.
In one embodiment, the distance between the first axis of rotation and the third axis of rotation is equal to the distance between the second axis of rotation and the fourth axis of rotation. In such an embodiment, this relative arrangement between the individual shafts enables the mechanical interlock to reliably effect transmission of motion.
In one embodiment, the mechanical interlock further comprises: a first mounting plate coupled to the base plate and adapted to mount the first circuit breaker; and a second mounting plate coupled to the base plate and adapted to mount the second circuit breaker. In such an embodiment, the respective circuit breaker can be reliably mounted on the mechanical interlock by the first mounting plate and the second mounting plate.
According to another aspect of the present disclosure, there is provided a dual power supply system including: any of the mechanical interlocks described above; a first circuit breaker having a main shaft coupled to the first push rod of the mechanical interlock; and a second circuit breaker having a main shaft coupled to the second push rod of the mechanical interlock.
The summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the disclosure, nor is it intended to be used to limit the scope of the disclosure.
Drawings
The above, as well as additional purposes, features, and advantages of embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings, in which:
FIG. 1 illustrates a schematic structural view of a mechanical interlock according to one embodiment of the present disclosure; and
Fig. 2 shows a simplified schematic of the mechanical interlock shown in fig. 1.
Like or corresponding reference characters indicate like or corresponding parts throughout the several views.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object.
As described above, most of the mechanical interlocking devices of circuit breakers on the market are only suitable for interlocking cooperation between two identical circuit breakers, but cannot realize interlocking between two different circuit breakers, because the circuit breakers of different types have the conditions of inconsistent closing strokes of the main shaft, inconsistent opening positions of the bottom of the circuit breakers, and the like. Embodiments of the present disclosure provide various implementations to solve the above-described problems. The principles of the present disclosure will be described in detail below in connection with exemplary embodiments with reference to fig. 1 through 2.
Fig. 1 shows a schematic structural view of a mechanical interlock 100 according to one embodiment of the present disclosure, and fig. 2 shows a simplified schematic view of the mechanical interlock 100 shown in fig. 1. As shown in fig. 1 and 2, the mechanical interlock 100 described herein generally includes a base plate 1, first and second push rods 21 and 22, first and second push plates 31 and 32, first and second swing arms 41 and 42, and a swing arm connecting rod 7.
The base plate 1 may be used to support other components of the mechanical interlock 100. As shown, the base plate 1 extends substantially along the first direction X. In fig. 1 and 2, the first direction X is a substantially horizontal direction. However, it should be understood that in actual installation, the base plate 1 of the mechanical interlock 100 need not be disposed in a horizontal direction, but may be disposed in other directions, depending on the relative arrangement between the two circuit breakers to be mechanically interlocked.
The first push rod 21 and the second push rod 22 extend through the base plate 1 in a second direction Y perpendicular to the first direction X, respectively. The first push rod 21 is adapted to be coupled with the main shaft of the first circuit breaker to move in the second direction Y. The second push rod 22 is adapted to be interlocked with the main shaft of the second circuit breaker to move in the second direction Y. In some embodiments, the first circuit breaker may be provided in the main power circuit. When the state of the first circuit breaker is changed, the main shaft thereof can push the first push rod 21 to move along the second direction Y. The second circuit breaker may be provided in the backup power circuit. When the state of the second circuit breaker is changed, the main shaft thereof can push the second push rod 22 to move along the second direction Y. In other embodiments, the first circuit breaker may be disposed in the backup power circuit and the second circuit breaker may be disposed in the main power circuit.
The first push rod 21 and the second push rod 22 can be linked by other components in the mechanical interlock 100. That is, when the first push rod 21 moves downward along the second direction Y, other components in the mechanical interlocking device 100 can drive the second push rod 22 to move upward along the second direction Y. Conversely, when the second push rod 22 moves downward along the second direction Y, other components in the mechanical interlocking device 100 can drive the first push rod 21 to move upward along the second direction Y. Hereinafter, the linkage of the first push rod 21 and the second push rod 22 will be described in detail.
The first pushing plate 31 and the second pushing plate 32 extend substantially along the first direction X and include a first side 301 and a second side 302 opposite the first side 301, respectively. The first sides 301 of the first and second pusher plates 31, 32 are coupled to the respective push rods 21, 22, respectively, such that the first and second pusher plates 31, 32 are movable along the second direction Y together with the respective push rods 21, 22. Specifically, when the first push rod 21 moves downward in the second direction Y, the first push rod 21 pushes the first push plate 31 to move downward in the second direction Y; accordingly, the second push plate 32 can push the second push rod 22 upward in the second direction Y. Similarly, when the second push rod 22 moves downward in the second direction Y, the second push rod 22 can push the second push plate 32 to move downward in the second direction Y; accordingly, the first push plate 31 will push the first push rod 21 to move upward along the second direction Y.
The first swing arm 41 and the second swing arm 42 are each rotatably connected to the base plate 1 and can be pushed by the second side 302 of the respective push plate 31, 32 to rotate relative to the base plate 1. The swing arm connecting rod 7 is connected between the first swing arm 41 and the second swing arm 42 to realize linkage between the first swing arm 41 and the second swing arm 42. Specifically, when the first push plate 31 moves downward in the second direction Y, the second side 302 of the first push plate 31 can push the first swing arm 41 to rotate, for example, in a counterclockwise direction with respect to the base plate 1. The rotation of the first swing arm 41 can be transmitted to the second swing arm 42 via the swing arm connecting rod 7, so that the second swing arm 42 rotates relative to the base plate 1 in the same direction as the first swing arm 41. The second swing arm 42 can push the second push plate 32 to move upward in the second direction Y during rotation. Similarly, as the second pusher plate 32 moves downward in the second direction Y, the second side 302 of the second pusher plate 32 can push the second swing arm 42 to rotate, for example, in a clockwise direction, relative to the base plate 1. The rotation of the second swing arm 42 is transmitted to the first swing arm 41 via the swing arm connecting rod 7, so that the first swing arm 41 rotates relative to the base plate 1 in the same direction as the second swing arm 42. The first swing arm 41 can push the first push plate 31 to move upward in the second direction Y during rotation.
In the embodiment according to the present disclosure, the first push plate 31 and the second push plate 32 have a large area along the first direction X and can bear the corresponding push rods 21, 22, so that a certain degree of position adjustment of the push rods 21, 22 in the first direction X can be adapted, so that the mechanical interlocking device 100 can be suitable for circuit breakers with different types and different bottom opening positions. In addition, the mechanical interlock 100 is simple in structure, easy to manufacture, and low in cost.
By using the mechanical interlocking device 100, after any one of the circuit breakers is closed, the corresponding push rod can move downwards along the second direction Y under the drive of the main shaft of the circuit breaker, and the other push rod moves upwards along the second direction Y due to linkage, so that the main shaft of the other circuit breaker is locked, and the other circuit breaker cannot be closed. Therefore, the mechanical interlock 100 can reliably achieve the interlocking between various types of circuit breakers, thereby ensuring the safety of the dual power circuit.
In some embodiments, as shown in fig. 1 and 2, the mechanical interlock 100 further includes a first guide 51 and a second guide 52. The first guide means 51 is for guiding the first push plate 31 to move in the second direction Y while preventing the first push plate 31 from translating in the first direction X. Similarly, the second guide 52 is used to guide the movement of the second pusher plate 32 in the second direction Y while preventing the translation of the second pusher plate 32 in the first direction X.
In one embodiment, as shown in fig. 1 and 2, each guide 51, 52 includes a pair of guide bars 501 and a pair of slides 502. The guide bars 501 are provided on the base plate 1 at intervals in the second direction Y. Each slide 502 is slidably sleeved on a corresponding guide rod 501 and supports a corresponding push plate 31, 32, respectively. In this way, the cooperation of the slider 502 and the guide lever 501 can be employed to stably support and reliably guide the respective push plates 31, 32. In other embodiments, the first guide 51 and the second guide 52 may have other structures, and the scope of the present disclosure is not limited in this respect.
In one embodiment, as shown in fig. 1 and 2, the first swing arm 41 includes a first rotation shaft 411, a first driving portion 412, and a third rotation shaft 413. The first swing arm 41 is rotatably connected to the base plate 1 via a first rotation shaft 411. The first driving part 412 is adapted to be pushed by the second side 302 of the first push plate 31 along the second direction Y to rotate the first swing arm 41 relative to the base plate 1. The third rotary shaft 413 is rotatably connected to the swing arm connecting rod 7. Similarly, the second swing arm 42 includes a second rotation shaft 421, a second driving part 422, and a fourth rotation shaft 423. The second swing arm 42 is rotatably connected to the base plate 1 via a second rotation shaft 421. The second driving part 422 is adapted to be pushed by the second side 302 of the second push plate 32 along the second direction Y to rotate the second swing arm 42 relative to the base plate 1. The fourth rotation shaft 423 is rotatably connected to the swing arm connecting rod 7.
When the first push plate 31 moves downward in the second direction Y, the second side 302 of the first push plate 31 can push the first driving part 412 such that the first swing arm 41 rotates around the first rotation shaft 411, for example, in a counterclockwise direction. The rotation of the first swing arm 41 can be transmitted to the second swing arm 42 via the swing arm connecting rod 7, so that the second swing arm 42 rotates about the second rotation shaft 421 in the same direction as the first swing arm 41. During the rotation of the second swing arm 42, the second driving part 422 thereof can push the second push plate 32 to move upward along the second direction Y.
Similarly, when the second push plate 32 moves downward in the second direction Y, the second side 302 of the second push plate 32 can push the second driving part 422 such that the second swing arm 42 rotates around the second rotation shaft 421, for example, in a clockwise direction. The rotation of the second swing arm 42 is transmitted to the first swing arm 41 via the swing arm connecting rod 7, so that the first swing arm 41 rotates about the first rotation shaft 411 in the same direction as the second swing arm 42. During the rotation of the first swing arm 41, the first driving portion 412 thereof can push the first push plate 31 to move upward along the second direction Y.
In some embodiments, as shown in fig. 1 and 2, the distance between the first rotation shaft 411 and the first driving part 412 is different from the distance between the second rotation shaft 421 and the second driving part 422. That is, the first swing arm 41 and the second swing arm 42 may have different arm lengths, so that the displacement strokes of the first push rod 21 and the second push rod 22 in the second direction Y are different. The ratio of the displacement strokes of the first push rod 21 and the second push rod 22 in the second direction Y may be identical to the ratio of the arm lengths of the first swing arm 41 and the second swing arm 42, thereby making the mechanical interlock 100 suitable for two circuit breakers having different main shaft closing strokes. In other embodiments, the distance between the first rotary shaft 411 and the first driving portion 412 may be equal to the distance between the second rotary shaft 421 and the second driving portion 422, thereby making the mechanical interlock 100 suitable for use with two circuit breakers having the same main shaft closing stroke.
In some embodiments, as shown in fig. 1 and 2, the first driving part 412 and the second driving part 422 are located outside the first rotation shaft 411 and the second rotation shaft 421 in the first direction X. This arrangement of the first drive portion 412 and the second drive portion 422 makes the mechanical interlock 100 simple in construction and easy to implement. In other embodiments, first drive portion 412 and second drive portion 422 may have other arrangements with respect to first shaft 411 and second shaft 421, the scope of the disclosure being not limited in this respect.
In some embodiments, as shown in fig. 1 and 2, the distance between the first rotation shaft 411 and the third rotation shaft 413 may be substantially equal to the distance between the second rotation shaft 421 and the fourth rotation shaft 423. With such a relative arrangement, the mechanical interlock 100 can reliably achieve transmission of motion. In other embodiments, the distance between first shaft 411 and third shaft 413 may be different from the distance between second shaft 421 and fourth shaft 423, the scope of the present disclosure being not limited in this respect.
In some embodiments, as shown in fig. 1, the mechanical interlock 100 further includes a first mounting plate 61 and a second mounting plate 62. The first mounting plate 61 is coupled to the base plate 1 and is adapted to mount a first circuit breaker. The second mounting plate 62 is coupled to the base plate 1 and is adapted to mount a second circuit breaker. The first mounting plate 61 and the second mounting plate 62 enable the corresponding circuit breaker to be reliably mounted on the mechanical interlock 100. In other embodiments, individual circuit breakers may also be mounted on mechanical interlock 100 in other ways, the scope of the present disclosure being not limited in this respect.
In an embodiment according to the present disclosure, there is also provided a dual power supply system. The system includes any of the mechanical interlocks 100 described above; a first circuit breaker, the main shaft of which is coupled to the first push rod 21 of the mechanical interlock 100; and a second circuit breaker whose main shaft is coupled to the second push rod 22 of the mechanical interlock 100. In one embodiment, the first circuit breaker may be arranged in the main power circuit and the second circuit breaker is arranged in the backup power circuit. In another embodiment, the first circuit breaker may be arranged in the backup power circuit and the second circuit breaker is arranged in the main power circuit.
When the first circuit breaker is closed, the first push rod 21 can move downwards along the second direction Y under the drive of the main shaft of the circuit breaker, and the second push rod 22 moves upwards along the second direction Y due to linkage, so that the main shaft of the second circuit breaker is locked and cannot be closed. Similarly, when the second circuit breaker is closed, the second push rod 22 can move downwards along the second direction Y under the drive of the main shaft of the circuit breaker, and the first push rod 21 moves upwards along the second direction Y due to linkage, so that the main shaft of the first circuit breaker is locked so as not to be closed. Therefore, the mechanical interlock 100 can reliably implement the interlocking between various types of circuit breakers, thereby ensuring the safety of the dual power supply system.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A mechanical interlock, comprising:
A base plate (1) arranged along a first direction (X);
A first push rod (21) and a second push rod (22) extending through the base plate (1) along a second direction (Y) perpendicular to the first direction (X), respectively, the first push rod (21) being adapted to be interlocked with a main shaft of a first circuit breaker to move along the second direction (Y), the second push rod (22) being adapted to be interlocked with a main shaft of a second circuit breaker to move along the second direction (Y);
A first pusher plate (31) and a second pusher plate (32), each comprising a first side (301) coupled to a respective pusher (21; 22) and a second side (302) opposite to said first side (301), and adapted to move together with the respective pusher (21; 22) along said second direction (Y);
a first swing arm (41) and a second swing arm (42), each rotatably connected to the base plate (1), and adapted to be pushed by a second side (302) of a respective push plate (31; 32) to rotate relative to the base plate (1); and
A swing arm connecting rod (7) connected between the first swing arm (41) and the second swing arm (42);
Wherein the first swing arm (41) comprises: a first rotary shaft (411) rotatably connected to the base plate (1); and a first driving portion (412) adapted to be pushed by the second side (302) of the first pushing plate (31) along the second direction (Y) to rotate the first swing arm (41) with respect to the base plate (1); and
Wherein the second swing arm (42) comprises: a second rotation shaft (421) rotatably connected to the base plate (1); and a second driving portion (422) adapted to be pushed by a second side (302) of the second push plate (32) along the second direction (Y) to rotate the second swing arm (42) with respect to the base plate (1).
2. The mechanical interlock of claim 1, further comprising:
-first guiding means (51) adapted to guide the movement of said first push plate (31) along said second direction (Y); and
-Second guiding means (52) adapted to guide the movement of said second pusher plate (32) along said second direction (Y).
3. The mechanical interlock according to claim 2, wherein each of said first guide means (51) and said second guide means (52) comprises:
pairs of guide bars (501) arranged on the base plate (1) at intervals along the second direction (Y); and
A pair of sliding members (502) are respectively slidably fitted over the respective guide rods (501) and support the respective push plates (31; 32).
4. The mechanical interlock according to claim 1, wherein a distance between the first rotational shaft (411) and the first drive portion (412) is different from a distance between the second rotational shaft (421) and the second drive portion (422).
5. The mechanical interlock according to claim 1, wherein in the first direction (X), the first drive portion (412) and the second drive portion (422) are located outside the first rotation shaft (411) and the second rotation shaft (421).
6. The mechanical interlock of claim 1,
Wherein the first swing arm (41) further comprises a third rotation shaft (413), the third rotation shaft (413) being rotatably connected to the swing arm connecting rod (7); and
The second swing arm (42) further comprises a fourth rotating shaft (423), and the fourth rotating shaft (423) is rotatably connected to the swing arm connecting rod (7).
7. The mechanical interlock of claim 6, wherein a distance between the first rotational axis (411) and the third rotational axis (413) is equal to a distance between the second rotational axis (421) and the fourth rotational axis (423).
8. The mechanical interlock of claim 1, further comprising:
a first mounting plate (61) coupled to the base plate (1) and adapted to mount the first circuit breaker; and
A second mounting plate (62) coupled to the base plate (1) and adapted to mount the second circuit breaker.
9. A dual power supply system comprising:
the mechanical interlock of any one of claims 1 to 8;
a first circuit breaker, the main shaft of which is coupled to the first push rod (21) of the mechanical interlocking device; and
A second circuit breaker having a main shaft coupled to the second push rod (22) of the mechanical interlock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834000.4A CN112447426B (en) | 2019-09-04 | 2019-09-04 | Mechanical interlocking device and dual-power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910834000.4A CN112447426B (en) | 2019-09-04 | 2019-09-04 | Mechanical interlocking device and dual-power supply system |
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| CN112447426B true CN112447426B (en) | 2024-08-13 |
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