A circuit breaker fast closing device and method

Abstract

The application discloses a circuit breaker quick closing device and method, which comprises a closing energy storage mechanism and a closing control mechanism. The closing energy storage mechanism comprises a circuit breaker closing drive shaft, a crank connecting rod mechanism and a closing energy storage spring. The circuit breaker closing drive shaft is connected with the circuit breaker handle and the crank connecting rod mechanism respectively, and the crank connecting rod mechanism is connected with the closing energy storage spring. The closing control mechanism comprises a controller, an energy storage driving mechanism, an energy storage releasing mechanism and a closing push crank. The controller is electrically connected with the energy storage driving mechanism and the energy storage releasing mechanism respectively. The energy storage driving mechanism is connected with the closing push crank and used for driving the closing push crank to compress the closing energy storage spring. The mechanical energy required for quick closing of the circuit breaker can be stored in the form of elastic potential energy. When quick closing is required, the controlled electromagnetic force triggers the elastic potential energy releasing device. The elastic potential energy is quickly converted into the mechanical energy required for closing of the circuit breaker, so that the circuit breaker is quickly closed and connected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical switch, in particular to a circuit breaker fast closing device and method. BACKGROUND

[0002] For the occasion that has strict requirements for continuous power supply, it must have dual power supply, and the mutual switching between the two power supplies must be in the order of milliseconds. Single UPS only guarantees that the lower power consumer is not affected when the power supply is stopped, and if the UPS fails, this guarantee does not exist. Therefore, in order to be absolutely safe, two independent power supply systems are needed, and the switching between them must also be in the order of milliseconds, and the main power supply and the standby power supply must be contact breaking type isolation interlocking. How to achieve the above requirements with reliable technology and low cost is a difficult problem.

[0003] The existing circuit breaker needs to be closed manually, and the closing efficiency is relatively slow, the automation level is low, and the use of electricity is prone to safety problems, and the loss of the rear-end load electrical appliance is increased. SUMMARY

[0004] The purpose of the present application is to provide a circuit breaker fast closing device and method, which is simple in structure, convenient to use, and can store the mechanical energy required for the fast closing of the circuit breaker in the form of elastic potential energy. When the circuit breaker needs to be quickly closed to connect the power supply, the controlled electromagnetic force triggers the elastic potential energy release device, and the elastic potential energy is quickly converted into the mechanical energy required for the closing of the circuit breaker, so that the circuit breaker is quickly closed and connected.

[0005] To achieve the above purpose, the present application provides the following scheme:

[0006] A circuit breaker fast closing device, comprising a circuit breaker and a fast closing device arranged on one side of the circuit breaker, the fast closing device comprising a closing energy storage mechanism and a closing control mechanism, the closing energy storage mechanism comprising a circuit breaker closing drive shaft, a crank connecting rod mechanism and a closing energy storage spring, one end of the circuit breaker closing drive shaft being connected with the circuit breaker handle, the other end being connected with the crank connecting rod mechanism, and the crank connecting rod mechanism being connected with the closing energy storage spring; the closing control mechanism comprising a controller, an energy storage driving mechanism, an energy storage release mechanism and a closing push crank, the controller being electrically connected with the energy storage driving mechanism and the energy storage release mechanism respectively, the energy storage driving mechanism being connected with the closing push crank and being used to drive the closing push crank to compress the closing energy storage spring and store elastic potential energy; when the circuit breaker needs to be quickly closed, the energy storage release mechanism acts on the closing push crank to release the closing energy storage spring, and the elastic potential energy is converted into mechanical energy for pushing the circuit breaker handle through the crank connecting rod mechanism.

[0007] Optionally, the crank connecting rod mechanism comprises a connecting rod, a closing drive shaft handle, one end of the closing drive shaft of the circuit breaker is a non-circular section shaft, one end of the non-circular section shaft is inserted into a corresponding non-circular section hole of the handle of the circuit breaker, the other end of the closing drive shaft of the circuit breaker is a disc, the middle part of the disc is a convex circular shaft, the circular shaft and one end of the closing drive shaft handle form a shaft hole connection, the outer side of the circumference of the disc is provided with a convex circular arc block for blocking the closing drive shaft handle, so that the drive shaft handle drives the drive shaft and the handle of the circuit breaker to rotate together, realizing the closing of the circuit breaker; the other end of the closing drive shaft handle is connected with the connecting rod, and the connecting rod is connected with the closing energy storage spring.

[0008] Optionally, the closing energy storage spring is a compression spring, the compression spring is arranged in a sliding groove, one end of the compression spring is fixedly connected with one end of the sliding groove, and the other end is connected with a sliding block, and the sliding block is connected with the connecting rod.

[0009] Optionally, the energy storage driving mechanism comprises a motor speed reducer, a crank driving gear and a pin, the motor speed reducer is a worm gear structure, the motor speed reducer is drivingly connected with the crank driving gear, the closing push crank is sleeved on the rotating shaft of the crank driving gear, the crank driving gear is symmetrically provided with a first ring groove and a second ring groove, the closing push crank is provided with a pin hole, the pin is sequentially arranged in the pin hole and the first ring groove or the second ring groove, and one end of the closing push crank, away from the crank driving gear, is used for pushing the sliding block.

[0010] Optionally, a high platform higher than the depth of the sliding groove is arranged on the sliding block, and the high platform is in contact with the closing push crank.

[0011] Optionally, the energy storage releasing mechanism is a pin plug-in electromagnetic device, after the pin plug-in electromagnetic device is powered on, the pin is pulled out along the pin hole by the attraction force of the magnetic force electromagnet, so that the closing push crank and the crank driving gear are separated.

[0012] Optionally, the energy storage releasing mechanism further comprises an electromagnet reset spring, after the pin plug-in electromagnetic device is powered off, the pin plug-in electromagnetic device pushes the pin downward to reinsert the crank driving gear and the closing push crank under the action of the electromagnet reset spring.

[0013] Optionally, the closing spring is a torsion spring, the energy storage driving mechanism comprises a motor reducer, an incomplete gear and a crank driving gear, the motor reducer is in driving connection with the incomplete gear, the circumferential surface of the incomplete gear comprises an optical axis surface and a plurality of gear teeth, the incomplete gear is in meshing connection with the crank driving gear through the plurality of gear teeth, the closing push crank is in integral structure with the crank driving gear, the torsion spring is embedded in the closing push crank, and the closing push crank is connected with the connecting rod; the energy storage driving mechanism further comprises a torsion spring locking lever, and the torsion spring locking lever is used for abutting against the torsion arm of the torsion spring.

[0014] Optionally, the energy storage releasing mechanism comprises a locking lever electromagnetic driving mechanism and an electromagnet reset spring, one end of the locking lever electromagnetic driving mechanism is hinged to one end of the torsion spring locking lever, the other end of the torsion spring locking lever is used for abutting against the torsion arm of the torsion spring, one end of the electromagnet reset spring is fixedly connected with the torsion spring locking lever, and the other end is fixedly connected on the electromagnetic driving mechanism.

[0015] The application further provides a circuit breaker quick closing method applied to the circuit breaker quick closing device.

[0016] The energy storage driving mechanism is used for compressing the closing spring, and the mechanical energy required for closing the circuit breaker is stored in the form of spring elastic potential energy.

[0017] When the circuit breaker needs to be quickly closed to connect the power supply, the energy storage releasing mechanism is used for releasing the compressed closing spring, the spring elastic potential energy is converted into the mechanical energy required for closing the circuit breaker, the circuit breaker handle is pulled, and the circuit is quickly connected.

[0018] According to the specific embodiments of the application, the circuit breaker quick closing device and method have the following technical effects: the closing spring is used for storing the closing energy, the energy storage driving mechanism is used for compressing the closing spring, and the mechanical energy required for closing the circuit breaker is stored in the form of spring elastic potential energy; when the circuit breaker needs to be quickly closed to connect the power supply, the energy storage releasing mechanism is used for releasing the compressed closing spring, the spring elastic potential energy is converted into the mechanical energy required for closing the circuit breaker, the circuit breaker handle is pulled, and the circuit breaker is quickly closed and connected; in the dual power supply system, when the first power supply system normally supplies power to the power load, the quick closing device has sufficient time to reserve sufficient closing mechanical potential energy for the circuit breaker of the second power supply system by using the micro motor and the large-scale reducer at extremely low power and cost; when the two sets of power supply systems need to be switched, the other set of power supply can be quickly connected, and uninterrupted power supply is realized at extremely low power and cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0020] Figure 1 The installation structure schematic diagram of the circuit breaker quick closing device of the present application on a double power supply system;

[0021] Figure 2 The structure schematic diagram of the circuit breaker quick closing device of the first embodiment of the present application;

[0022] Figure 3 The exploded view of the circuit breaker quick closing device of the first embodiment of the present application;

[0023] Figure 4 The cross-sectional structure schematic diagram of the circuit breaker quick closing device of the first embodiment of the present application;

[0024] Figure 5 The cross-sectional structure schematic diagram of the circuit breaker quick closing device of the second embodiment of the present application;

[0025] Figure 6 The working principle schematic diagram of the circuit breaker quick closing device of the second embodiment of the present application;

[0026] Figure 7 The exploded view of the circuit breaker quick closing device of the second embodiment of the present application;

[0027] The accompanying drawings: 1, circuit breaker; 1A, left circuit breaker; 1B, right circuit breaker; 2, circuit breaker handle; 3, circuit breaker closing drive shaft; 3A, non-circular cross-section drive shaft; 3B, circular arc block; 4, closing drive shaft handle; 5, connecting rod; 6, sliding block; 7, sliding groove; 8, closing energy storage spring; 9, closing push crank; 9A, pin hole; 10, crank drive gear; 10A, first ring groove; 10B, second ring groove; 11, pin; 12, pin plug electromagnetic device; 13, motor reducer; 14, controller; 15, lock hook lever electromagnetic drive mechanism; 16, electromagnet reset spring; 17, torsional spring lock hook lever; 18, incomplete gear; 19, mechanical interlocking device; 20, left quick closing device; 21, right quick closing device. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0029] The present application aims to provide a circuit breaker fast closing device and method, which is simple in structure, convenient to use, and capable of storing mechanical energy required for fast closing of the circuit breaker in the form of elastic potential energy. When the circuit breaker needs to be fast closed to connect the power supply, a controlled electromagnetic force is used to fire an elastic potential energy release device, and the elastic potential energy is quickly converted into mechanical energy required for closing of the circuit breaker, so that the circuit breaker is quickly closed to connect.

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0031] As shown in Figure 1 , the present application provides a circuit breaker fast closing device, which comprises a circuit breaker 1 and a fast closing device arranged on one side of the circuit breaker 1, and is applied in a dual power supply system, comprising a left circuit breaker 1A and a right circuit breaker 1B. The left circuit breaker 1A and the right circuit breaker 1B are interlocked through a mechanical interlocking device 19. The left side of the left circuit breaker 1A is connected with the left fast closing device 20, and the right side of the right circuit breaker is connected with the right fast closing device 21.

[0032] As shown in Figures 2-7 , the fast closing device comprises a closing energy storage mechanism and a closing control mechanism. The closing energy storage mechanism comprises a circuit breaker closing drive shaft 3, a crank connecting rod mechanism and a closing energy storage spring 8. One end of the circuit breaker closing drive shaft 3 is connected with the circuit breaker handle 2, and the other end is connected with the crank connecting rod mechanism. The crank connecting rod mechanism is connected with the closing energy storage spring 8. The closing control mechanism comprises a controller 14, an energy storage driving mechanism, an energy storage release mechanism and a closing push crank 9. The controller 14 is electrically connected with the energy storage driving mechanism and the energy storage release mechanism respectively. The energy storage driving mechanism is connected with the closing push crank 9, and is used to drive the closing push crank 9 to compress the closing energy storage spring 8 to store elastic potential energy. When the circuit breaker needs to be fast closed, the energy storage release mechanism acts on the closing push crank 9 to release the closing energy storage spring 8, and the elastic potential energy is converted into mechanical energy to push the circuit breaker handle 2 through the crank connecting rod mechanism.

[0033] The crank connecting rod mechanism comprises a connecting rod 5, a closing drive shaft handle 4, one end of a circuit breaker closing drive shaft 3 is a non-circular section shaft 3A, the non-circular section shaft 3A is inserted into a corresponding non-circular section hole 2A of the circuit breaker handle 2, the other end of the circuit breaker closing drive shaft 3 is a disc, the middle part of the disc is a convex circular shaft, the circular shaft and one end of the closing drive shaft handle 4 form a shaft hole connection, the outer side of the circumference of the disc is provided with a convex circular arc block 3B, which is used for blocking the closing drive shaft handle 4, so that the drive shaft handle 4 drives the drive shaft 3 and the circuit breaker handle 2 to rotate together, and the closing of the circuit breaker is realized; the other end of the closing drive shaft handle 4 is connected with the connecting rod 5, and the connecting rod 5 is connected with the closing energy storage spring 8.

[0034] Wherein, the closing drive shaft handle 4 can rotate around the axis of the circular shaft, but the rotation is not 360 degrees full circle, when being limited by the circular arc block 3B, the closing drive shaft handle 4 drives the drive shaft 3 and the circuit breaker handle 2 to rotate together, so that the circuit breaker 1 is closed.

[0035] The closing energy storage spring 8 can be a tension spring, a compression spring or a torsion spring, and other components with different shapes but the same function can also be applied to the application.

[0036] The application also provides a circuit breaker quick closing method applied to the circuit breaker quick closing device, which comprises the following steps:

[0037] The closing energy storage spring is compressed by the energy storage driving mechanism, and the mechanical energy required for closing the circuit breaker is stored in the form of spring elastic potential energy;

[0038] When the circuit breaker needs to be quickly closed to connect the power supply, the compressed closing energy storage spring is released by the energy storage releasing mechanism, the spring elastic potential energy is converted into the mechanical energy required for closing the circuit breaker, the circuit breaker handle is pulled, and the circuit is quickly connected.

[0039] The specific scheme of the first embodiment is as follows:

[0040] As Figures 2-4As shown, the closing energy storage spring 8 is a compression spring, which is arranged in the sliding groove 7, one end of the compression spring is fixedly connected with one end of the sliding groove 7, and the other end is connected with the sliding block 6, and the sliding block 6 is connected with the connecting rod 5. The sliding block 6 linearly slides along the sliding groove 7, one end of the sliding groove 7 abuts against one end of the sliding block 6, thereby forming the movement limit of the sliding block 6, and the movement limit corresponds to the closing limit position of the circuit breaker 1 through the crank connecting rod mechanism composed of the sliding block 6, the connecting rod 5 and the closing drive shaft handle 4; the other end of the sliding block 6 is in contact with the closing energy storage spring 8 which is also arranged in the sliding groove 7, and when the elastic potential energy of the closing energy storage spring 8 is released, the elastic force forces the crank connecting rod mechanism to complete the rapid closing action of the circuit breaker 1.

[0041] The energy storage driving mechanism comprises a motor reducer 13, a crank driving gear 10 and a pin 11, the motor reducer 13 is a worm gear structure, the motor reducer 13 is drivingly connected with the crank driving gear 10, the closing push crank 9 is sleeved on the rotating shaft of the crank driving gear 10, the crank driving gear 10 is symmetrically provided with a first ring groove 10A and a second ring groove 10B, the closing push crank 9 is provided with a pin hole 9A, the pin 11 is sequentially arranged in the pin hole 9A and the first ring groove 10A or the second ring groove 10B, and one end of the closing push crank 9 away from the crank driving gear 10 is used for pushing the sliding block 6.

[0042] The sliding block is provided with a high platform 6A which is higher than the groove depth of the sliding groove 7, and the high platform 6A is in contact with the closing push crank 9.

[0043] The energy storage releasing mechanism is a pin plugging electromagnetic device 12, after the pin plugging electromagnetic device 12 is electrified, the pin 11 is pulled out along the pin hole 9A through the attraction force of the magnetic electromagnet, so that the closing push crank 9 and the crank driving gear 10 are separated.

[0044] The energy storage releasing mechanism further comprises an electromagnet reset spring 16, after the pin plugging electromagnetic device 12 is de-energized, the pin plugging electromagnetic device 12 is pushed downward to re-insert the pin 11 into the crank driving gear 10 and the closing push crank 9 under the action of the electromagnet reset spring 16.

[0045] In the embodiment one, the process of storing the mechanical energy required for closing the circuit breaker 1 is as follows: the torque of the motor reducer 13 is transmitted to the crank drive gear 10 and the closing push crank 9, the closing push crank 9 rotates clockwise, the slider 6 is pushed along the sliding groove 7 to compress the closing energy storage spring 8, so that the closing energy storage spring 8 has enough elastic potential energy required for the next closing of the circuit breaker 1; since the motor reducer 13 is a worm and gear structure, the torque transmission can only be unidirectional from the motor to the compression energy storage direction of the closing energy storage spring 8, when the motor stops power supply, the elastic torque generated by the closing energy storage spring 8 is locked at the meshing position of the worm and gear, so that the mechanical elastic potential energy is saved; the whole energy storage process is carried out in the closing self-locking state of the circuit breaker 1, while the slider 6 compresses the closing energy storage spring 8, the connecting rod 5 connected with the slider 6 pushes the shaft handle 4 to rotate counterclockwise, and the connecting rod 5 is separated from the circular arc block 3B of the driving shaft 3 in the static state, the separation angle is greater than the rotation angle of the circuit breaker handle 2 or the circular arc block 3B when the circuit breaker 1 is tripped; only in the tripped state of the circuit breaker 1, the circular arc block 3B above the closing drive shaft 3 is closest to the closing drive shaft handle 4.

[0046] When the circuit breaker 1 needs to be closed, the closing energy storage spring 8 is in the state of compression energy storage and waiting to fire, the waiting to fire means waiting for the controller 14 to issue an instruction, the instruction means that the electromagnetic coil of the pin plug electromagnetic device 12 is powered on to generate electromagnetic force to attract the electromagnet, the attraction force of the electromagnet pulls out the pin 11 along the pin hole 9A, so that the closing push crank 9 is separated from the crank drive gear 10, the slider 6 loses the block of the closing push crank 9, under the action of the spring force, the connecting rod 5 and the drive shaft handle 4 are quickly pulled to complete the closing action of the circuit breaker 1; under the action of the electromagnet return spring 16, the pin plug electromagnetic device 12 pushes the pin 11 downward to reinsert into the other ring groove 10B of the crank drive gear 10, when the motor reducer 13 is started again, the gear 10 and the closing push crank 9 connected with the gear 10 are driven to enter the next compression spring process.

[0047] The specific scheme of the embodiment two is as follows:

[0048] As Figures 5-7As shown, the closing energy storage spring 8 is a torsion spring, the energy storage driving mechanism comprises a motor reducer 13, an incomplete gear 18 and a crank driving gear 10, the motor reducer 13 is drivingly connected with the incomplete gear 18, the circumferential surface of the incomplete gear 18 comprises an optical axis surface and a plurality of gear teeth, the incomplete gear 18 is meshingly connected with the crank driving gear 10 through the plurality of gear teeth, the closing push crank 9 is an integral structure with the crank driving gear 10, and the torsion spring is embedded in the closing push crank 9, and the closing push crank 9 is connected with the connecting rod 5; the energy storage driving mechanism further comprises a torsion spring locking hook lever 17, which is used for abutting against the torsion arm of the torsion spring.

[0049] The energy storage releasing mechanism comprises a locking hook lever electromagnetic driving mechanism 15 and an electromagnet reset spring 16, one end of the locking hook lever electromagnetic driving mechanism 15 is hingedly connected with one end of the torsion spring locking hook lever 17, the other end of the torsion spring locking hook lever 17 is used for abutting against the torsion arm of the torsion spring, one end of the electromagnet reset spring 16 is fixedly connected with the torsion spring locking hook lever 17, and the other end is fixedly connected on the electromagnetic driving mechanism 15.

[0050] The working principle of the second embodiment is that, on the 360-degree circumferential surface of the incomplete gear 18, only the corresponding range of the angle of rotation of the closing energy storage spring 8 is arranged with gear teeth for rotating the crank driving gear 10, and the remaining circumferential surface is only an optical axis surface with a diameter of the dedendum circle; the function of the torsion spring locking hook lever 17 is to limit the restoring force of the closing energy storage spring 8 after being twisted, to keep and lock the stored mechanical energy, and the first embodiment is realized by the one-way torque transmission characteristics of the worm gear, so that the gear back locking mechanism is not needed.

[0051] When the closing instruction of embodiment two is connected to the controller 14, the hook lever electromagnetic drive mechanism 15 pulls the torsional spring hook lever 17, and due to the fact that the incomplete gear 18 is located at the toothless optical axis position at this time, the circuit breaker four-link closing mechanism composed of the crank drive gear 10, the closing drive crank 9, the connecting rod 5, the circuit breaker closing drive shaft handle 4, the circuit breaker closing drive shaft 3 and the circular arc block 3A is driven by the torsional force of the closing energy storage spring 8 to quickly move to complete the closing action. When the next energy storage is performed, the controller 14 transmits the energy storage instruction to the motor reducer 13, and the motor reducer 13 drives the incomplete gear 18 to rotate. When the optical axis face angle rotation of the gear 18 is completed, the toothed part starts to mesh with the crank drive gear 10, which on the one hand twists the closing energy storage spring 8 arranged inside the closing drive crank 9 to store energy for the next closing, and on the other hand simultaneously drives the four-link mechanism to be out of contact with the circuit breaker closing drive shaft 3 to leave the return angle space of the circuit breaker handle mechanism when the circuit breaker is tripped, so as to prepare for the next closing.

[0052] No matter embodiment one or embodiment two, the quick closing device is the same in the application of dual power supply technology, Figure 1 The dual power supply quick switching device of the application is shown in the figure. When the main power supply suddenly stops supplying power, the electromagnetic pin pulling device 12 or the hook lever electromagnetic drive mechanism 15 in the right quick closing device 21 of the backup circuit breaker 1B receives the instruction of the controller 14, quickly releases the elastic potential energy required by the quick closing mechanism of the backup circuit breaker 1B, and realizes the quick closing of the backup circuit breaker 1B. At the same time, the cross tripping mechanism in the mechanical interlocking device 19 triggers the tripping of the main circuit breaker 1A. At this time, the left quick closing device 20 of the main circuit breaker 1A has completed the energy storage action when the main power supply normally supplies power, and leaves the tripping return space of the handle of the main circuit breaker 1A. Similarly, when the main power supply resumes supplying power, the left quick closing device 20 quickly starts the closing of the main circuit breaker 1A and the tripping of the backup circuit breaker 1B. Although the switching is in the order of milliseconds, the mechanical interlocking device 19 ensures that the other circuit breaker is tripped before closing in a mechanical logic manner.

[0053] No matter the main circuit breaker 1A or the backup circuit breaker 1B, when the lower circuit needs to be repaired, the two sets of circuit breakers can be in the tripped position, and the two circuit breakers are locked by the mechanical interlocking device 19 to ensure that the two power supplies do not supply power to the lower circuit. The specific implementation has been described in the patent document CN105895462B--“Dual power supply switching device with mechanical tripping interlocking function”.

[0054] The circuit breaker quick closing device and method have the advantages that the structure is simple, the closing energy storage structure is stored by means of a closing energy storage spring, the mechanical energy required for closing of the circuit breaker is stored in the form of spring elastic potential energy by compression through an energy storage driving mechanism, when the circuit breaker needs to be quickly closed to connect the power supply, the compressed closing energy storage spring is released through an energy storage releasing mechanism, the spring elastic potential energy is converted into the mechanical energy required for closing of the circuit breaker, the circuit breaker handle is pulled, and quick closing of the circuit breaker is realized; in a dual power supply system, when the first power supply system normally supplies power to the power load, the quick closing device has sufficient time to reserve sufficient closing mechanical potential energy for the circuit breaker of the second power supply system by using a micro motor and a large-scale speed reducer at extremely low power and cost, and when the two sets of power supply systems need to be switched, the other set of power supply can be quickly connected to realize uninterrupted power supply at extremely low power and cost.

[0055] The various embodiments are described in a progressive manner in the specification, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0056] The principles and implementation manners of the present application are described by using specific examples, and the above embodiment description is only used to help understand the method and core idea of the present application; meanwhile, for the person skilled in the art, the specific implementation manner and application range can be changed according to the idea of the present application. In conclusion, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A circuit breaker quick closing device comprising a circuit breaker and a quick closing device provided on one side of the circuit breaker, characterized in that, The quick closing device comprises a closing energy storage mechanism and a closing control mechanism, the closing energy storage mechanism comprises a circuit breaker closing drive shaft (3), a crank connecting rod mechanism and a closing energy storage spring (8), one end of the circuit breaker closing drive shaft (3) is connected with the circuit breaker handle (2), the other end is connected with the crank connecting rod mechanism, and the crank connecting rod mechanism is connected with the closing energy storage spring (8); the closing control mechanism comprises a controller (14), an energy storage driving mechanism, an energy storage releasing mechanism and a closing push crank (9), the controller (14) is electrically connected with the energy storage driving mechanism and the energy storage releasing mechanism respectively, the energy storage driving mechanism is connected with the closing push crank (9) and used for driving the closing push crank (9) to compress the closing energy storage spring (8) and store elastic potential energy; when the circuit breaker needs to be quickly closed, the energy storage releasing mechanism acts on the closing push crank (9) and is used for releasing the closing energy storage spring (8), and the elastic potential energy is converted into mechanical energy for pushing the circuit breaker handle (2) through the crank connecting rod mechanism; The crank connecting rod mechanism comprises a connecting rod (5) and a closing drive shaft handle (4), one end of the circuit breaker closing drive shaft (3) is a non-circular section shaft (3A), one end of the non-circular section shaft (3A) is inserted into a corresponding non-circular section hole (2A) in the circuit breaker handle (2), the other end of the circuit breaker closing drive shaft (3) is a disc, the middle part of the disc is a convex circular shaft, the circular shaft and one end of the closing drive shaft handle (4) form shaft hole connection, and the outer side of the circumference of the disc is provided with a convex circular arc block (3B) for blocking the closing drive shaft handle (4), so that the drive shaft handle (4) drives the drive shaft (3) and the circuit breaker handle (2) to rotate together, and the closing of the circuit breaker is realized; the other end of the closing drive shaft handle (4) is connected with the connecting rod (5), and the connecting rod (5) is connected with the closing energy storage spring (8); The closing energy storage spring (8) is a compression spring or a torsion spring; When the closing energy storage spring (8) is a compression spring, the compression spring is arranged in a sliding groove (7), one end of the compression spring is fixedly connected with one end of the sliding groove (7), the other end is connected with a sliding block (6), and the sliding block (6) is connected with the connecting rod (5); When the closing energy storage spring (8) is a compression spring, the compression spring is arranged in a sliding groove (7), one end of the compression spring is fixedly connected with one end of the sliding groove (7), the other end is connected with a sliding block (6), and the sliding block (6) is connected with the connecting rod (5); The energy storage driving mechanism comprises a motor reducer (13), a crank driving gear (10) and a pin (11), the motor reducer (13) is a worm gear structure, the motor reducer (13) is drivingly connected with the crank driving gear (10), the closing push crank (9) is sleeved on the rotating shaft of the crank driving gear (10), the crank driving gear (10) is symmetrically provided with a first ring groove (10A) and a second ring groove (10B), the closing push crank (9) is provided with a pin hole (9A), the pin (11) is sequentially arranged through the pin hole (9A) and the first ring groove (10A) or the second ring groove (10B), and one end of the closing push crank (9) away from the crank driving gear (10) is used for pushing the sliding block (6). The sliding block (6) is provided with a high platform (6A) higher than the groove depth of the sliding groove (7), and the high platform (6A) is in contact with the closing push crank (9). The energy storage releasing mechanism is a pin plugging electromagnetic device (12), after the pin plugging electromagnetic device (12) is powered on, the pin (11) is pulled out along the pin hole (9A) through the magnetic attraction force of the magnetic electromagnet, so that the closing push crank (9) and the crank driving gear (10) are separated.

2. The circuit breaker quick close apparatus of claim 1, wherein, The energy storage releasing mechanism further comprises an electromagnet reset spring (16), after the pin plugging electromagnetic device (12) is powered off, the pin plugging electromagnetic device (12) pushes the pin (11) downward to reinsert the crank driving gear (10) and the closing push crank (9) under the action of the electromagnet reset spring (16).

3. The circuit breaker quick close apparatus of claim 1, wherein, When the closing energy storage spring (8) is a torsional spring, the energy storage driving mechanism comprises a motor reducer (13), an incomplete gear (18) and a crank driving gear (10), the motor reducer (13) is drivingly connected with the incomplete gear (18), the circumferential surface of the incomplete gear (18) comprises an optical axis surface and a plurality of teeth, the incomplete gear (18) is meshingly connected with the crank driving gear (10) through the plurality of teeth, the closing push crank (9) and the crank driving gear (10) are coaxial and integral structure, the torsional spring is embedded in the closing push crank (9), and the closing push crank (9) is connected with the connecting rod 5; the energy storage driving mechanism further comprises a torsional spring hook lever (17), and the torsional spring hook lever (17) is used for abutting against the torsional arm of the torsional spring.

4. The circuit breaker quick close apparatus of claim 3, wherein, The energy storage releasing mechanism comprises a hook lever electromagnetic driving mechanism (15) and an electromagnet reset spring (16), one end of the hook lever electromagnetic driving mechanism (15) is hingedly connected with one end of the torsional spring hook lever (17), the other end of the torsional spring hook lever (17) is used for abutting against the torsional arm of the torsional spring, one end of the electromagnet reset spring (16) is fixedly connected with the torsional spring hook lever (17), and the other end is fixedly connected on the electromagnetic driving mechanism (15).

5. A method for fast closing of a circuit breaker, applied to the fast closing device of any one of claims 1-4, characterized in that, The method comprises the following steps: The mechanical energy required for closing the circuit breaker is stored in the form of spring elastic potential energy by compressing the closing energy spring through the energy storage driving mechanism; When the circuit breaker needs to be quickly closed to connect the power supply, the spring elastic potential energy is converted into the mechanical energy required for closing the circuit breaker by releasing the closing energy spring through the energy release mechanism, and the circuit is quickly connected by pulling the circuit breaker handle.

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