Open-circuit and closed-circuit dual-mode low-voltage dual-power-supply automatic changeover switch mechanism

Abstract

The utility model discloses an open-circuit and closed-circuit dual-mode low-voltage dual-power automatic changeover switch mechanism. The switch mechanism comprises a support and two power switches. A mechanical interlocking limiting mechanism is arranged between the two power switches and comprises an interlocking electromagnet assembly, a guide piece, a limiting plate, a limiting rod and a connecting plate; the guide piece is fixed on an operating mechanism of the power switch B; one end of the limiting plate is connected to an operating mechanism of the power switch A, the other end of the limiting plate can slide back and forth along the guide piece, and a sliding groove is formed in the limiting plate; the limiting rod movably penetrates through the operating mechanism of the power switch B. One end of the limiting rod is connected with the telescopic end of the interlocking electromagnet assembly through a connecting plate, and the other end of the limiting rod slides into or out of the sliding groove. According to the utility model, unlocking and locking between the two power switches are realized through the mechanical interlocking limiting mechanism, so that the automatic switching mechanism can select different switching modes according to different application scenes, and the application requirements of multiple occasions and multiple scenes are met.

Description

Technical Field

[0001] This utility model patent relates to the field of electrical technology, and specifically to an open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism. Background Art

[0002] With the development of the national economy, the safety, stability and continuity of power supply and distribution have received more and more attention, and the potential safety hazards and economic losses caused by power outages are increasing. Automatic transfer switches are widely used in civil buildings, commercial buildings, public buildings, IT, finance, transportation, industry and other fields to ensure the reliability and continuity of power supply. The current market demand for automatic transfer switch electrical appliances is becoming more and more diversified, and the technical performance requirements are becoming higher and higher. For important places in application fields such as finance and industry, especially in special industries such as data centers and chip factories or special loads (such as power plant security power supply, computer center, etc.), more and more users require automatic transfer switch electrical appliances to realize parallel switching and zero power-off functions to ensure uninterrupted power supply and avoid greater social benefits and huge economic losses due to power outages. To prevent short circuits when two different power supplies are supplying power to the load.

[0003] At present, the mainstream automatic transfer switch electrical appliances all adopt the working mode of disconnecting the existing power supply first and then switching to another power supply. Therefore, the load side is inevitably powered off. In addition, the existing automatic transfer switch electrical appliances are often unable to perform power-off maintenance and avoid the impact of abnormal overcurrent when switching in parallel, and the application environment is limited. There are very few PC-level automatic transfer switch electrical appliances on the market that have both open-circuit conversion mode and closed-circuit conversion mode. This type of product generally adopts two sets of spring energy storage mechanisms in structure. The structure is divided into upper and lower parts. The functional structure is switched through the relevant interlocking mechanism to achieve mode selection. The spring operating structure has many parts and components, and the structure is relatively complex. The accuracy of the action drifts and increases with the increase of use time. The closing power needs to be motor-driven spring energy storage or manual energy storage in advance. The action response during operation is also general. In some special power switching occasions, there may be a situation where the power drive is not timely and the switching cannot be normal. Therefore, it is necessary to propose a new type of automatic transfer switching device to continuously monitor the power quality. When the voltage, frequency, phase and other parameters of the two power supplies meet the power parallel requirements, they can be connected in parallel for a short time without short circuit failure. It can realize short-time voltage parallel conversion and zero power-off function to meet application requirements. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide an open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism with both the open-circuit conversion function of a conventional dual-power switch and the instantaneous parallel conversion function, so as to solve the problem that the existing dual-power automatic conversion device has a single conversion mode and cannot be selected as needed. The switching switch mechanism can select different switching modes according to different application scenarios to meet the application needs of multiple occasions and scenarios.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] An open-circuit closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism, which includes a bracket and two power switches relatively arranged on both sides of the bracket, the dual power refers to power A and power B, the two power switches are respectively an A power switch for realizing the opening and closing of power A and a B power switch for realizing the opening and closing of power B; a mechanical interlocking limit mechanism for realizing the interlocking or unlocking of the two power switches is arranged between the two power switches, the mechanical interlocking limit mechanism includes an interlocking electromagnet assembly, a guide, a limit plate, a limit rod and a connecting plate; the interlocking electromagnet assembly is a push-pull electromagnet fixed on the bracket; the guide is fixed to the operating mechanism of the B power switch On; one end of the limit plate is rotatably connected to the operating mechanism of the A power switch through a pin shaft, and the other end is arranged in the guide member and can slide back and forth along the guide member, and a slide groove is arranged on the end of the limit plate located in the guide member; the limit rod movably passes through the operating mechanism of the B power switch and can slide axially, one end of the limit rod faces the interlocking electromagnet assembly and is connected to the telescopic end of the interlocking electromagnet assembly through a connecting plate, and the other end faces the slide groove and can slide in or out of the slide groove under the drive of the interlocking electromagnet assembly. After the limit rod slides into the slide groove of the limit plate, the limit plate slides back and forth along the slide groove, and the slide groove can limit the movement range of the limit plate so that it can only move within the limited range of the slide groove. The unlocking and locking between the two power switches is realized through a mechanical interlocking limit mechanism, so that the automatic switching switch mechanism can select different switching modes according to different application scenarios to meet the application needs of multiple occasions and scenarios.

[0007] Furthermore, the two power switches have the same structure and are relatively mounted on both sides of the bracket; each power switch includes a driving mechanism that provides power for the power switch and an operating mechanism that controls the power switch; the driving mechanism includes a direction electromagnet assembly, a tripping electromagnet assembly and a switch-on and switch-off assembly, and the direction electromagnet assembly and the tripping electromagnet assembly are both push-pull electromagnets fixed on the bracket, wherein the telescopic end of the direction electromagnet assembly points to the area between the two power switches, and the telescopic end of the tripping electromagnet assembly faces downward; the operating mechanism is arranged in the area between the two power switches close to the driving mechanism, and includes a locking member assembly and a driving shaft assembly; the locking member assembly includes a mounting shaft, a locking member and a reset torsion spring; the mounting shaft is fixed to the bracket; the middle part of the locking member is rotatably mounted on the mounting shaft, one end of the locking member is rotatably connected to the telescopic end of the tripping electromagnet assembly, the other end of the locking member points to the area between the two power switches and a slot is provided at the top of the end, and the notch of the slot faces the tripping electromagnet assembly; the reset torsion spring is sleeved on the mounting shaft and has two locking members respectively clamped on the bracket and the locking member. The torsion arm, when the other end of the locking piece is pressed down, the reset torsion spring is deformed and stores energy; the drive shaft assembly includes a drive shaft, a first swing arm, a second swing arm, a tension shaft and a thrust shaft; the drive shaft is rotatably mounted on the bracket; the first swing arm is fixed on the drive shaft and corresponds to the telescopic end position of the direction electromagnet assembly; the second swing arm is fixed on the drive shaft and corresponds to the telescopic end position of the release electromagnet assembly; the tension shaft is fixed on the first swing arm and is rotatably connected to the telescopic end of the direction electromagnet assembly; the thrust shaft is fixed on the second swing arm and is away from the locking piece One end of the tripping electromagnet assembly is in contact, and it can also be stuck in or leave the slot after the second swing arm swings; the opening and closing assembly is arranged below the driving shaft assembly, and includes a support plate, a main shaft, a main shaft swing arm and an opening energy storage spring; the support plate is installed on the bracket; the main shaft is rotatably installed on the bracket; the middle part of the main shaft swing arm is fixed on the main shaft, its upper end is rotatably connected to the first swing arm, and its lower end is movably connected to the contact system of the power supply and controls the opening and closing of the contact system; one end of the opening energy storage spring is hung on the upper end of the main shaft swing arm, and the other end is hung on the support plate.

[0008] Specifically, the mechanical interlocking limit mechanism is connected to the two power switches in the following manner: the guide member of the mechanical interlocking limit mechanism is fixed on the first swing arm of the B power switch; one end of the limit plate is rotatably connected to the first swing arm of the A power switch through a pin shaft, and the other end is arranged in the guide member and can slide back and forth along the guide member; the limit rod movably passes through the first swing arm of the B power switch and can slide axially.

[0009] Furthermore, after the limit rod slides into the slide slot of the limit plate, when one of the power switches completes the switching between the open state and the closed state, the limit rod just slides from one end of the slide slot to the other end of the slide slot, limiting the length of the slide slot so that the two power switches cannot be closed at the same time.

[0010] Furthermore, when the power is opened and closed, the position status of each component is as follows:

[0011] When the power supply is in the off state, the telescopic end of the direction electromagnet assembly extends, and the lower end of the first swing arm, the lower end of the second swing arm, the tension shaft and the thrust shaft are all away from the direction electromagnet assembly. Under the action of the off energy storage spring, the thrust shaft leaves the slot and pushes the locking piece away from one end of the tripping electromagnet assembly and moves downward, the reset torsion spring deforms and stores energy, the telescopic end of the tripping electromagnet assembly shortens, and the off energy storage spring is in a natural state; when the power supply is in the on state, the telescopic end of the direction electromagnet assembly shortens, the lower end of the first swing arm, the lower end of the second swing arm and the thrust shaft approach the direction electromagnet assembly, the thrust shaft is stuck in the slot, the reset torsion spring releases energy and moves the other end of the locking piece upward, the telescopic end of the tripping electromagnet assembly extends, and the off energy storage spring is in an energy storage state.

[0012] Furthermore, the open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism has two modes, namely, an open-circuit mode and a closed-circuit mode, and the initial mode is the open-circuit mode;

[0013] In the open circuit mode, the mechanical interlocking limit mechanism is in a natural limit state, the limit rod is inserted in the slide slot of the limit plate, and the limit plate is limited by the limit rod (the slide slot limits the moving range of the limit plate so that it can only move within the limited range of the slide slot). The moving range is limited, the drive shaft assemblies of the two power switches are locked, and the movements of the two power switches are restricted. At this time, after one of the two power switches is closed, the other is in an open state; the two power switches can be opened at the same time but cannot be closed at the same time.

[0014] In the closed-circuit mode, the interlocking electromagnet assembly in the mechanical interlocking limit mechanism is energized, the telescopic end of the interlocking electromagnet assembly shortens, driving the limit rod to be pulled out of the limit plate, the drive shaft assemblies of the two power switches are unlocked, and the two power switches are completely independent. At this time, the opening and closing actions of the two power switches do not affect each other.

[0015] Furthermore, the length from one end of the locking piece close to the tripping electromagnet assembly to the mounting axis is shorter than the length from one end of the locking piece far from the tripping electromagnet assembly to the mounting axis. By utilizing the lever principle, the tripping and opening action is more labor-saving and more sensitive.

[0016] Furthermore, the first swing arm and the second swing arm are both composed of two parallel plates, and the thrust shaft and the tension shaft are both connected between the two parallel plates.

[0017] Furthermore, each power switch also includes a manual trip assembly, which includes a pressure rod, a fixed plate, a push rod, a trip pressure plate and a reset spring; the pressure rod is fixed to one end of the lock member away from the trip electromagnet assembly; the fixed plate is fixed to the bracket and is located above the pressure rod; the lower end of the push rod moves through the fixed plate to contact the pressure rod; the trip pressure plate is installed on the upper end of the push rod; the reset spring is sleeved outside the push rod and is located between the fixed plate and the trip pressure plate. The switch can be manually opened and closed through the manual trip assembly.

[0018] Furthermore, the open-circuit closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism also includes a limit plate, which is fixed on the bracket and located between the fixed plate and the tripping pressure plate, and is used to limit the downward movement of the tripping pressure plate. The existence of the limit plate can prevent the tripping pressure plate from being over-pressed.

[0019] Furthermore, the locking slot of the locking member is located between the pressure rod and the installation shaft.

[0020] The open-circuit closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism also includes an electrical interlocking component, which includes a gasket, a microswitch and a paddle; the gasket is fixed to the telescopic end of the interlocking electromagnet component; the microswitch is installed on the bracket and corresponds to the position of the interlocking electromagnet component; one end of the paddle is linked to the microswitch (the microswitch has three contacts, and the paddle alternately drives two of the contacts to be connected, one of which is a common contact, and the other two are switching contacts), and the other end extends to the gasket; in the electrical interlocking state, the interlocking electromagnet The telescopic end of the component (powered on) retracts, pulling the limit rod out of the slide slot to achieve mechanical unlocking, and at the same time, the gasket retracts synchronously to press the paddle, and the paddle then toggles the microswitch, so that the common contact of the microswitch is connected to one of the switching contacts, realizing the electrical interlocking in this mode; conversely, in the electrical unlocking state, the telescopic end of the interlocking electromagnet component (powered off) extends, pushing the limit rod into the slide slot to achieve mechanical interlocking, and at the same time, the gasket moves synchronously away from the paddle, and the paddle rebounds to toggle the microswitch, so that the common contact of the microswitch is connected to the other switching contact, realizing the electrical interlocking in this mode.

[0021] The beneficial effects of the utility model are:

[0022] (1) The open-circuit and closed-circuit dual-mode dual power automatic conversion mechanism can monitor the quality of the two power supplies through the host computer controller and select the open-circuit or closed-circuit conversion mode according to the actual needs of the customer, breaking through the existing dual power conversion switch with only open-circuit or closed-circuit conversion mode;

[0023] (2) Both power supply A and power supply B have their own excitation drive, lock, electric and manual tripping and opening energy storage structure. The structural conversion between open circuit mode and closed circuit mode is realized through a simple and reliable interlocking structure. The independent functional structure of the two power supplies improves the reliability of the action, ensures that the conversion time between the two power supplies is basically consistent, and the opening and closing action response is fast;

[0024] (3) The open circuit mode is equipped with mechanical and electrical interlocks, and the closed circuit mode is equipped with electrical interlocks. The mechanical interlock uses limit components to realize two independent action systems to maintain or limit simultaneous closing. The limit structure is simple and reliable. The electrical interlock realizes power on and off in both modes through the series and parallel connection of auxiliary switches, alarm switches and micro switches, ensuring the safety and accuracy of the action. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described in detail below with reference to the accompanying drawings.

[0026] Figure 1 It is a structural schematic diagram of the open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism of the utility model;

[0027] Figure 2 for Figure 1 The main view after removing the obstruction of the front bracket;

[0028] Figure 3 for Figure 1 Rear view after removing the rear bracket (the lower closing component is not drawn);

[0029] Figure 4 This is a positional relationship diagram of the two power switches described in the utility model (the lower closing component is not drawn);

[0030] Figure 5 It is a schematic diagram of the structure of the power switch of the utility model at different viewing angles (the closing component at the lower part is not drawn);

[0031] Figure 6 It is a structural schematic diagram of the locking member of the utility model;

[0032] Figure 7 This is a structural schematic diagram of the lower closing component of the power switch of the utility model;

[0033] Figure 8 It is a structural schematic diagram of the lower closing components of the two power switches of the utility model;

[0034] Fig. 9 This is the installation position diagram of the mechanical interlocking limit mechanism in the utility model;

[0035] Fig.10It is a schematic diagram of the structure of the power switch of the utility model in the closed position and the open position (the closing component of the lower part is not drawn);

[0036] Fig.11 It is a structural schematic diagram of the manual tripping assembly of the utility model;

[0037] Fig.12 It is a schematic diagram of the structure of an existing push-pull electromagnet (the upper side of the figure is a diagram of the disconnected state of the moving and fixed iron cores, and the lower side is a diagram of the attracted state of the moving and fixed iron cores);

[0038] Fig.13 This is the schematic diagram of the moving contact movement in open circuit mode;

[0039] Fig.14 This is the schematic diagram of the moving contact movement in closed circuit mode;

[0040] As shown in the figure: 1- bracket, 2- direction electromagnet assembly, 3- release electromagnet assembly, 4- lock assembly, 41- installation shaft, 42- lock, 43- reset torsion spring, 44- slot, 5- drive shaft assembly, 51- drive shaft, 52- first swing arm, 53- second swing arm, 54- tension shaft, 55- thrust shaft, 6- opening and closing assembly, 61- support plate, 62- main shaft, 63- main shaft swing arm, 64- opening energy storage spring, 7 -Mechanical interlocking limit mechanism, 71-interlocking electromagnet assembly, 72-guide, 73-limiting plate, 74-limiting rod, 75-connecting plate, 76-slide, 8-manual trip assembly, 81-pressure rod, 82-fixed plate, 83-top rod, 84-tripping pressure plate, 85-reset spring, 9-micro switch, 10-pick, 11-gasket, 12-housing, 13-coil, 14-fixed iron core, 15-moving iron core, 16-telescopic rod;

[0041] In each of the drawings, a reference mark with A or B after a number means that the component corresponding to the number belongs to the A power switch or the B power switch, such as 3A refers to the tripping electromagnet assembly of the A power switch, 3B refers to the tripping electromagnet assembly of the B power switch, 51A refers to the driving shaft of the A power switch, 51B refers to the driving shaft of the B power switch, and so on. DETAILED DESCRIPTION

[0042] The following is an explanation of the implementation of the present invention by specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0045] like Figure 1-12 As shown, this embodiment provides an open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism, which includes a bracket 1, two power switches relatively arranged on both sides of the bracket 1, and a mechanical interlocking limit mechanism 7 arranged between the two power switches for realizing the interlocking or unlocking of the two power switches. The dual power sources refer to power supply A and power supply B, and the two power switches are power switch A for realizing the opening and closing of power supply A and power switch B for realizing the opening and closing of power supply B. The two power switches have the same structure and are relatively installed on both sides of the bracket 1; each power switch includes a driving mechanism for providing power for opening and closing of the power supply and an operating mechanism for controlling the opening and closing of the power supply.

[0046] like Figure 5 As shown, the driving mechanism includes a direction electromagnet assembly 2 and a release electromagnet assembly 3, and both the direction electromagnet assembly 2 and the release electromagnet assembly 3 are push-pull electromagnets fixed on the bracket 1, wherein the telescopic end of the direction electromagnet assembly 2 points to the area between the two power switches, and the telescopic end of the release electromagnet assembly 3 faces downward.

[0047] The operating mechanism is arranged in the area between the two power switches close to the driving mechanism, and includes a locking component assembly 4, a driving shaft assembly 5 and an opening and closing assembly 6.

[0048] like Figure 5 With Figure 6As shown, the locking member assembly 4 includes a mounting shaft 41, a locking member 42 and a reset torsion spring 43; the mounting shaft 41 is fixed on the bracket 1; the middle part of the locking member 42 is rotatably mounted on the mounting shaft 41, one end of the locking member 42 is rotatably connected to the telescopic end (telescopic rod 16) of the tripping electromagnet assembly 3, the other end of the locking member 42 points to the area between the two power switches and a card slot 44 is provided at the top of the end, and the notch of the card slot 44 faces the tripping electromagnet assembly 3; the reset torsion spring 43 is sleeved on the mounting shaft 41 and has two torsion arms respectively clamped on the bracket 1 and the locking member 42, and when the other end of the locking member 42 is pressed down, the reset torsion spring 43 twists and stores energy.

[0049] like Figure 5 As shown, the drive shaft assembly 5 includes a drive shaft 51, a first swing arm 52, a second swing arm 53, a tension shaft 54 ​​and a thrust shaft 55; the drive shaft 51 is rotatably mounted on the bracket 1; the first swing arm 52 is fixed on the drive shaft 51 and corresponds to the telescopic end position of the direction electromagnet assembly 2; the second swing arm 53 is fixed on the drive shaft 51 and corresponds to the telescopic end position of the release electromagnet assembly 3; the tension shaft 54 ​​is fixed on the first swing arm 52 and is rotatably connected to the telescopic end of the direction electromagnet assembly 2; the thrust shaft 55 is fixed on the second swing arm 53 and contacts the end of the locking member 42 away from the release electromagnet assembly 3, and can also be inserted into or leave the card slot 44 after the second swing arm 52 swings. The first swing arm 52 and the second swing arm 53 are parallel to each other and are both composed of two parallel plates, and the thrust shaft 55 and the tension shaft 54 ​​are both connected between the two parallel plates.

[0050] like Figure 2 , Figure 7 as well as Figure 8 As shown, the opening and closing assembly 6 is arranged below the driving shaft assembly 5, and includes a support plate 61, a main shaft 62, a main shaft swing arm 63 and an opening energy storage spring 64; the support plate 61 is mounted on the bracket 1; the main shaft 62 is rotatably mounted on the bracket 1; the middle part of the main shaft swing arm 63 is fixed on the main shaft 62, and its upper end is rotatably connected to the first swing arm 52 (the connection point is located below the tension shaft 54), and its lower end is movably connected to the contact system of the power supply (connecting the moving contact) and controls the opening and closing of the contact system (opening and closing of the moving contact and the static contact); one end of the opening energy storage spring 64 is hung on the upper end of the main shaft swing arm 63, and the other end is hung on the support plate 61, and the opening and closing assemblies 6 of the two power switches share a support plate 61.

[0051] like Figure 3 and Fig. 9As shown, the mechanical interlocking limit mechanism 7 includes an interlocking electromagnet assembly 71, a guide member 72, a limit plate 73, a limit rod 74 and a connecting plate 75; the interlocking electromagnet assembly 71 is a push-pull electromagnet fixed to the bracket 1; the guide member 72 is fixed to the first swing arm 52B of the B power switch, and the guide member 72 is a plate body with a groove; one end of the limit plate 73 is rotatably connected to the first swing arm 52A of the A power switch through a pin shaft, and the other end is arranged in the guide member 72 (groove) and can slide back and forth along the guide member 72, and a slide groove 76 (in the form of a long strip through hole, arranged along the length direction of the limit plate 73) is provided on one end of the limit plate 73 located in the guide member 72; the limit rod 74 (in a direction perpendicular to the first swing arm 52B of the B power switch) moves through The first swing arm 52B of the B power switch can slide axially, one end of the limit rod 74 faces the interlocking electromagnet assembly 71 and is connected to the telescopic end of the interlocking electromagnet assembly 71 through a connecting plate 75, and the other end of the limit rod 74 faces the slide groove 76 and can slide into or out of the slide groove 76 under the drive of the interlocking electromagnet assembly 71; after the limit rod 74 slides into the slide groove 76 of the limit plate 75, the limit plate 74 can slide back and forth along the slide groove 76, and the slide groove 76 can limit the moving range of the limit plate 74 so that it can only move within the limited range of the slide groove 76. At this time, when one of the power switches completes the switching between the opening state and the closing state, the limit rod 74 just slides from one end of the slide groove 76 to the other end of the slide groove 76, limiting the length of the slide groove 76 so that the two power switches cannot be closed at the same time.

[0052] On the premise that the limiting rod 74 slides into the sliding groove 76 of the limiting plate 75,

[0053] When the A power switch is closed and the B power switch is open (such as Figure 3 As shown in the state, the limit rod 74 slides relative to the limit plate 73 to the end of the slide slot 76 close to the B power switch ( Figure 3 At this time, the B power switch is limited by the limit plate 73 (the limit rod 74 is supported by the leftmost end of the limit plate 73 slot 76), and it is difficult to close the switch (the lower end of the first swing arm 52B is difficult to swing toward the direction of the direction electromagnet assembly 2B), and the A power switch is not limited by the limit plate 73 and can open the switch (it can push the limit plate 73 to slide along the slot 76 toward the B power switch);

[0054] When the A power switch is turned off and the B power switch is also turned off, the limit rod 74 slides relative to the limit plate 73 to the end of the slide slot 76 close to the A power switch ( Figure 3 The rightmost end of the middle chute 76), at this time, the A power switch and the B power switch can be closed separately, but not at the same time, and the length of the chute 76 is only enough for one of the power switches to be closed;

[0055] When the A power switch is opened and the B power switch is closed, the limit rod 74 slides relative to the limit plate 73 to the end of the slide slot close to the B power switch ( Figure 3 At this time, the A power switch is limited by the limit plate 73 and is difficult to close, but the B power switch is not limited by the limit plate 73 and can be opened (it can push the limit plate 73 to slide along the slide groove 76 toward the A power switch).

[0056] The unlocking and locking between the two power switches are achieved through the mechanical interlocking limit mechanism 7, so that the automatic switching switch mechanism can select different switching modes according to different application scenarios to meet the application requirements of multiple occasions and scenarios.

[0057] When the power is turned on and off, the position of each component is as follows:

[0058] When the power supply is in the off state, the telescopic end of the direction electromagnet assembly 2 is extended, and the lower end of the first swing arm 52, the lower end of the second swing arm 53, the tension shaft 54 ​​and the thrust shaft 55 are all away from the direction electromagnet assembly 2. Under the action of the off energy storage spring 64, the thrust shaft 55 leaves the slot 44 and pushes the lock member 42 away from the end of the trip electromagnet assembly 3 (away from the end of its mounting shaft 41) to move downward, the reset torsion spring 43 deforms and stores energy, the telescopic end of the trip electromagnet assembly 3 shortens, and the off energy storage The spring 64 is in a natural state; when the power supply is in the closed state, the telescopic end of the direction electromagnet assembly 2 is shortened, the lower end of the first swing arm 52, the lower end of the second swing arm 53, the tension shaft 54 ​​and the thrust shaft 55 are all close to the direction electromagnet assembly 2, and the thrust shaft 55 is inserted into the slot 44. The reset torsion spring 43 releases energy and moves the other end of the locking member 42 upward (so that the slot 44 stably clamps the thrust shaft 55), the telescopic end of the release electromagnet assembly 3 is extended, and the opening energy storage spring 64 is in an energy storage state.

[0059] The direction electromagnet assembly 2, the tripping electromagnet assembly 3 and the interlocking electromagnet assembly 71 are all existing push-pull electromagnets, such as Fig.11As shown, the push-pull electromagnet includes a housing 12, a coil 13, a fixed iron core 14, a moving iron core 15 and a telescopic rod 16; the housing 12 is fixed on the bracket 1, the coil 13 is installed in the housing 12, the moving iron core 15 and the fixed iron core 14 are installed in the housing 12 and are sleeved inside the coil 13; one end of the telescopic rod 16 is coaxially fixed to the moving iron core 15 and can slide with the moving iron core 15, and the other end extends out of the housing 12 (direction); the other end of the telescopic rod 16 in the electromagnet assembly 2 is movably connected to the first swing arm 52 through the tension shaft 54, and the other end of the telescopic rod 16 in the release electromagnet assembly 3 is connected to the first swing arm 52 through the tension shaft 54. The release member 42 is movably connected, and the other end of the telescopic rod 16 in the interlocking electromagnet assembly 71 is connected to the limit rod 74 through a connecting plate 85, and a spring is sleeved on the part of the telescopic rod 16 located outside the shell 12; after the coil 13 is energized, the moving iron core 15 and the fixed iron core 14 are magnetized, and the moving iron core 15 slides toward the fixed iron core 14 under the action of the magnetic force and is attracted to the fixed iron core 14, and the spring is compressed to store energy; after the coil 13 is de-energized, the moving iron core 15 and the fixed iron core 14 lose their magnetism, and the moving iron core 15 is reset away from the fixed iron core 14 under the action of the spring; the moving iron core 15 and the telescopic rod 16 constitute a moving iron core assembly.

[0060] like Figure 1-12 As shown, the closing and opening principle of power switch A and power switch B is:

[0061] A power switch closing and opening: When the moving iron core assembly in the directional electromagnet assembly 2A of the A power switch performs the closing action, the moving iron core 15 and the fixed iron core 14 are attracted and pulled close to the minimum distance (such as Fig.11As shown in the figure), when the first swing arm 52A of the drive shaft assembly 5 in the A power switch is driven by the tension shaft 54A to rotate to the final position, the locking member 42A of the A power switch is locked to the second swing arm 53A to the locking position by the restoring force of the reset torsion spring 43A, and the locking groove 44 of the locking member 42A locks the thrust shaft 55A, so that the drive shaft assembly 5 of the A power switch is maintained in this position, which is also the closing position of the A power supply. After the second swing arm 53A of the A power switch reaches the locking position, due to the limiting effect of the limiting rod 74 on the limiting plate 73, the second swing arm 53B of the B power switch cannot swing to the closing position of the B power switch. When the coil 13 in the tripping electromagnet assembly 3A of the A power switch is energized, the moving iron core 15 is attracted upward, and the locking member 42A is pulled to rotate around the installation shaft 41 by the telescopic rod 16, so that the end of the locking member 42A away from the tripping electromagnet assembly 3A moves downward (so that the slot 44 is lower than the thrust shaft 55A). At this time, the second swing arm 53A in the A power switch drive shaft assembly 5 is acted upon by the opening force of the opening energy storage spring 64A (when the A power switch is closed, the opening energy storage spring 64A is stretched and stored energy, and the first swing arm 53A is pulled upward and the locking member 42A is pulled upward and rotated around the installation shaft 41 by the telescopic rod 16, so that the locking member 42A moves downward away from the end of the tripping electromagnet assembly 3A (so that the slot 44 is lower than the thrust shaft 55A). 52A and the second swing arm 53A are fixed on the drive shaft 51A together. The tension of the opening energy storage spring 64A on the first swing arm 52A is synchronously applied to the second swing arm 53A. The lower end of the second swing arm 53A swings around the drive shaft 51A toward the electromagnet assembly 2A in the direction away from the direction, so that the thrust shaft 55A on the second swing arm 53A leaves the slot 44 of the lock member 42A. The first swing arm 52A pulls the moving iron core assembly in the electromagnet assembly 2A in the direction through the tension shaft 54A to pull out. At the same time, the lower end of the first swing arm 52A pushes the main shaft swing arm 63A to rotate around the main shaft 62A under the action of the opening energy storage spring 64A, so that the main shaft swing arm 63A pushes the moving contact to separate from the static contact, that is, the A power switch is to the opening position. Figure 3 As shown, at this time, the A power switch is in the closing position. When its first swing arm 52A and the second swing arm 53A swing in the direction away from the direction electromagnet assembly 2A and reach the opening position, the first swing arm 52A synchronously drives the limit plate 73 to move along the slide slot 76, so that the limit plate 73 slides toward the direction electromagnet assembly 2B, and at the same time, the limit rod 74 moves to the end of the slide slot 76 away from the direction electromagnet assembly 2B, leaving a margin for the limit rod 74 to move in the direction of the direction electromagnet assembly 2B. That is to say, at this time, the limit plate 73 is not limited by the limit rod 74, and the lower ends of the first swing arm 52B and the second swing arm 53B of the B power switch can swing in the direction of the direction electromagnet assembly 2B. Therefore, at this time, the moving iron core assembly in the direction electromagnet assembly 2A of the B power switch can perform the closing direction of the attraction action.

[0062] B power switch closing and opening: When the moving iron core assembly in the directional electromagnet assembly 2B of the B power switch performs the closing action, the moving iron core 15 and the fixed iron core 14 are attracted and pulled close to the minimum distance (such as Fig.11As shown in the figure), when the first swing arm 52B of the drive shaft assembly 5 in the B power switch is driven by the tension shaft 54B to rotate to the final position, the locking member 42B of the B power switch is locked to the second swing arm 53B to the locking position by the restoring force of the reset torsion spring 43B, and the locking groove 44 of the locking member 42B locks the thrust shaft 55B, so that the drive shaft assembly 5 of the B power switch is maintained in this position, which is also the closing position of the B power supply. After the second swing arm 53B of the B power switch reaches the locking position, due to the limiting effect of the limiting rod 74 on the limiting plate 73, the second swing arm 53A of the A power switch cannot swing to the closing position of the A power switch. When the coil 13 in the tripping electromagnet assembly 3B of the B power switch is energized, the moving iron core 15 is attracted upward, and the locking member 42B is pulled by the telescopic rod 16 to rotate around the installation shaft 41, so that the locking member 42B moves downward away from the end of the tripping electromagnet assembly 3B (so that the slot 44 is lower than the thrust shaft 55B). At this time, the second swing arm 53B in the B power switch drive shaft assembly 5 is acted upon by the opening force of the opening energy storage spring 64B (when the B power switch is closed, the opening energy storage spring 64B is stretched and stored energy, and the first swing arm 53B is pulled upward to the closing position of the A power switch. 52B and the second swing arm 53B are fixed on the drive shaft 51B together. The tension of the opening energy storage spring 64B on the first swing arm 52B is synchronously applied to the second swing arm 53B). The lower end of the second swing arm 53B swings around the drive shaft 51B toward the electromagnet assembly 2B in the direction away from the direction, so that the thrust shaft 55B on the second swing arm 53B leaves the slot 44 of the locking member 42B. The first swing arm 52A pulls the moving iron core assembly in the electromagnet assembly 2A in the direction through the tension shaft 54A to pull out. At the same time, the lower end of the first swing arm 52B pushes the main shaft swing arm 63B to rotate around the main shaft 62B under the action of the opening energy storage spring 64B, so that the main shaft swing arm 63B pushes the moving contact to separate from the static contact, that is, the B power switch is to the opening position. Figure 3 As shown, at this time, the B power switch is in the open position, and the limit rod 74 moves to the end of the slide slot 76 away from the direction electromagnet assembly 2A, leaving a margin for the limit rod 74 to move toward the direction electromagnet assembly 2A. That is to say, at this time, the limit plate 73 is not limited by the limit rod 74, and the lower ends of the first swing arm 52A and the second swing arm 53A of the A power switch can swing toward the direction of the direction electromagnet assembly 2A. Therefore, at this time, the moving iron core assembly in the direction electromagnet assembly 2B of the A power switch can perform an attraction action in the closing direction. Example 2

[0063] This embodiment is configured as follows based on the embodiment 1:

[0064] like Figure 2-6 As shown, the length from the end of the locking member 42 close to the tripping electromagnet assembly 3 to the mounting shaft 41 is shorter than the length from the end of the locking member 42 away from the tripping electromagnet assembly 3 to the mounting shaft 41. By utilizing the lever principle, the tripping and opening action is more labor-saving and more sensitive. Example 3

[0065] This embodiment is configured as follows based on Embodiment 1 or 2:

[0066] like Figure 2 , Figure 3 as well as Fig.11 As shown, each power switch also includes a manual trip assembly 8, which includes a pressure rod 81, a fixed plate 82, a push rod 83, a tripping pressure plate 84 and a reset spring 85; the pressure rod 81 is fixed to the end of the lock member 42 away from the tripping electromagnet assembly 3; the fixed plate 82 is fixed to the bracket 1 and is located above the pressure rod 81; the lower end of the push rod 83 moves through the fixed plate 82 and contacts the pressure rod 81; the tripping pressure plate 84 is installed on the upper end of the push rod 83; the reset spring 85 is sleeved outside the push rod 83 and is located between the fixed plate 82 and the tripping pressure plate 84. The two power switches can be manually opened and closed by the manual trip assembly 8. The card slot 44 of the lock member 42 is located between the pressure rod 81 and the mounting shaft 41.

[0067] Take the manual tripping power switch A as an example. Figure 2 As shown, at this time, the power switch A is in the closed state, the tripping pressure plate 84 is pressed, the tripping pressure plate 84 pushes the push rod 83 to move downward, the reset spring 85 is compressed and stored, the lower end of the push rod 83 moves downward and pushes the pressure rod 81 to move downward, and the pressure rod 81 drives the lock member 42A away from the end of the tripping electromagnet assembly 3A to move downward, so that the thrust shaft 55A leaves the slot 44. When the lower end of the thrust shaft 55A is higher than the slot, the lower end of the second swing arm 53A and the lower end of the first swing arm 52A are both in the separation state. Under the action of the elastic force of the gate energy storage spring 64 (the opening gate energy storage spring 64 releases energy), it swings in the direction away from the electromagnet assembly 2A, and the first swing arm 52A pulls the moving iron core assembly in the direction electromagnet assembly 2A through the tension shaft 54A to pull out. At the same time, the lower end of the first swing arm 52A pushes the main shaft swing arm 63A to rotate around the main shaft 62A under the action of the opening gate energy storage spring 64A, so that the main shaft swing arm 63A pushes the moving contact to separate from the static contact, and the power switch A is tripped and opened. Example 4

[0068] This embodiment is configured as follows based on any one of Embodiments 1-3:

[0069] like Figure 2 , Figure 3 as well as Fig.11 As shown, the open-circuit closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism also includes a limit plate 86, which is fixed on the bracket 1 and located between the fixed plate 82 and the tripping pressure plate 84 (and located above the reset spring 85), and is used to limit the downward movement of the tripping pressure plate 84. The presence of the limit plate 86 can prevent the tripping pressure plate 84 from being over-pressed. Example 5

[0070] This embodiment is configured as follows based on any one of Embodiments 1-4:

[0071] like Fig. 9 As shown, the open-circuit closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism also includes an electrical interlocking component, which includes a gasket 11, a microswitch 9 and a paddle 10; the gasket 11 is fixed on the telescopic end of the interlocking electromagnet component 7; the microswitch 9 is installed on the bracket 1 and corresponds to the position of the interlocking electromagnet component 7; one end of the paddle 10 is linked to the microswitch 9 (the microswitch 9 has three contacts, and the paddle 10 alternately drives two of the contacts to be connected, one of which is a common contact, and the other two are switching contacts), and the other end extends to the gasket 11; in the electrical interlocking state, the interlocking electromagnet component 7 The telescopic end of the interlocking electromagnet assembly 7 retracts (power is on), pulling the limit rod 74 out of the slide slot 76 to achieve mechanical unlocking, and at the same time, the gasket 11 retracts synchronously to press the paddle 10, and the paddle 10 then toggles the microswitch 9, so that the common contact of the microswitch 9 is connected to one of the switching contacts, thereby achieving electrical interlocking in this mode; conversely, in the electrical unlocking state, the telescopic end of the interlocking electromagnet assembly 7 extends (power is off), pushing the limit rod 74 to slide into the slide slot 76, thereby achieving mechanical interlocking, and at the same time, the gasket 11 moves synchronously away from the paddle 10, and the paddle 10 rebounds to toggle the microswitch 9, so that the common contact of the microswitch 9 is connected to another switching contact, thereby achieving electrical interlocking in this mode.

[0072] like Fig.13 and Fig.14 As shown, the open-circuit closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism has two modes, namely, an open-circuit mode and a closed-circuit mode. The mode selection is controlled by the host computer and is initially in the open-circuit mode.

[0073] In the open circuit mode, the mechanical interlocking limit mechanism 7 is in a natural limit state, the limit rod 74 is inserted in the slide slot 76 of the limit plate 73, and the limit plate 73 is limited by the limit rod 74 (the slide slot 76 limits the movement range of the limit plate 73, so that it can only move within the limited range of the slide slot 76), and the movement range is limited. The drive shaft assembly 5 of the two power switches is locked, and the movement of the two power switches is limited. At this time, after one of the two power switches is closed, the other is in an open state; the two power switches can be opened at the same time but cannot be closed at the same time. That is, in the open circuit mode, the two power supplies are affected by the interlocking limit structure assembly (mechanical interlocking) and the electrical circuit (electrical interlocking), and the two power supplies cannot be closed at the same time. Only three states can be realized: AB power double open, A closed B open, and A open B closed, that is, the conventional dual power action mode.

[0074] Closed-loop mode:

[0075] The upper computer selects the closed-circuit mode, the interlocking electromagnet assembly 71 in the mechanical interlocking limit mechanism 7 is energized, the telescopic end of the interlocking electromagnet assembly 71 shortens to drive the limit rod 74 to withdraw from the slide slot 76 of the limit plate 73, the drive shaft assembly 5 of the two power switches is unlocked, and the two power switches are completely independent. At this time, the opening and closing actions of the two power switches do not affect each other. When the A power supply is in the closing position, the B power supply can also be closed. After the B power supply is closed, the A power supply is randomly triggered to trip, and vice versa. That is, the two states of A closed and B open and A open are realized, that is, the action mode of instantaneous parallel dual power supplies.

[0076] Other details of the present invention are all conventional techniques known to those skilled in the art.

[0077] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0078] The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism, comprising a bracket and two power switches arranged on both sides of the bracket, the two power switches are respectively an A power switch for realizing the opening and closing of the A power source and a B power switch for realizing the opening and closing of the B power source; a mechanical interlocking limit mechanism for realizing the interlocking or unlocking of the two power switches is arranged between the two power switches, characterized in that: The mechanical interlocking limit mechanism includes an interlocking electromagnet assembly, a guide member, a limit plate, a limit rod and a connecting plate; the interlocking electromagnet assembly is a push-pull electromagnet fixed on a bracket; the guide member is fixed on the operating mechanism of the B power switch; one end of the limit plate is rotatably connected to the operating mechanism of the A power switch through a pin shaft, and the other end is arranged in the guide member and can slide back and forth along the guide member, and a slide groove is provided on the end of the limit plate located in the guide member; the limit rod movably passes through the operating mechanism of the B power switch and can slide axially, one end of the limit rod faces the interlocking electromagnet assembly and is connected to the telescopic end of the interlocking electromagnet assembly through the connecting plate, and the other end faces the slide groove and can slide in or out of the slide groove under the drive of the interlocking electromagnet assembly, and after the limit rod slides into the slide groove of the limit plate, the limit plate slides back and forth along the slide groove.

2. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 1, characterized in that: The two power switches have the same structure and are mounted on both sides of the bracket opposite to each other; each power switch includes a driving mechanism for providing power for power switching and an operating mechanism for controlling power switching; The driving mechanism includes a direction electromagnet assembly, a tripping electromagnet assembly and a switch-on and switch-off assembly, wherein the direction electromagnet assembly and the tripping electromagnet assembly are push-pull electromagnets fixed on a bracket, wherein the telescopic end of the direction electromagnet assembly points to the area between the two power switches, and the telescopic end of the tripping electromagnet assembly points downward; The operating mechanism is arranged in the area between the two power switches near the driving mechanism, and comprises a locking component assembly and a driving shaft assembly; The lock component assembly includes a mounting shaft, a lock component and a reset torsion spring; the mounting shaft is fixed on the bracket; the middle part of the lock component is rotatably mounted on the mounting shaft, one end of the lock component is rotatably connected to the telescopic end of the tripping electromagnet assembly, the other end of the lock component points to the area between the two power switches and a card slot is provided at the top of the end, and the notch of the card slot faces the tripping electromagnet assembly; the reset torsion spring is sleeved on the mounting shaft and has two torsion arms respectively clamped on the bracket and the lock component, and when the other end of the lock component is pressed down, the reset torsion spring deforms and stores energy; The drive shaft assembly comprises a drive shaft, a first swing arm, a second swing arm, a tension shaft and a thrust shaft; the drive shaft is rotatably mounted on a bracket; the first swing arm is fixed on the drive shaft and corresponds to the telescopic end position of the direction electromagnet assembly; the second swing arm is fixed on the drive shaft and corresponds to the telescopic end position of the release electromagnet assembly; the tension shaft is fixed on the first swing arm and is rotatably connected to the telescopic end of the direction electromagnet assembly; the thrust shaft is fixed on the second swing arm and contacts an end of the locking member away from the release electromagnet assembly, and can also be inserted into or removed from the slot after the second swing arm swings; The opening and closing assembly is arranged below the driving shaft assembly, and includes a support plate, a main shaft, a main shaft swing arm and an opening energy storage spring; the support plate is installed on the bracket; the main shaft is rotatably installed on the bracket; the middle part of the main shaft swing arm is fixed on the main shaft, the upper end of which is rotatably connected to the first swing arm, and the lower end of which is movably connected to the contact system of the power supply and controls the opening and closing of the contact system; one end of the opening energy storage spring is hung on the upper end of the main shaft swing arm, and the other end is hung on the support plate.

3. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 2, characterized in that: The guide member of the mechanical interlocking limit mechanism is fixed on the first swing arm of the B power switch; one end of the limit plate is rotatably connected to the first swing arm of the A power switch through a pin shaft, and the other end is arranged in the guide member and can slide back and forth along the guide member; the limit rod movably passes through the first swing arm of the B power switch and can slide axially.

4. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 2, characterized in that: After the limit rod slides into the slide slot of the limit plate, when one of the power switches completes the switching between the open state and the closed state, the limit rod just slides from one end of the slide slot to the other end of the slide slot.

5. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 2, characterized in that: When the power supply is in the off state, the telescopic end of the direction electromagnet assembly extends, the lower end of the first swing arm, the lower end of the second swing arm, the tension shaft and the thrust shaft are all away from the direction electromagnet assembly, and the thrust shaft leaves the slot under the action of the off energy storage spring and pushes the lock piece away from one end of the tripping electromagnet assembly and moves downward, the reset torsion spring deforms and stores energy, the telescopic end of the tripping electromagnet assembly shortens, and the off energy storage spring is in a natural state; When the power is in the closed state, the telescopic end of the direction electromagnet assembly is shortened, the lower end of the first swing arm and the lower end of the second swing arm and the thrust shaft are close to the direction electromagnet assembly, the thrust shaft is inserted into the slot, the reset torsion spring releases energy and moves the other end of the locking piece upward, the telescopic end of the release electromagnet assembly is extended, and the opening energy storage spring is in the energy storage state.

6. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 2, characterized in that: It has two modes, namely open circuit mode and closed circuit mode, and the initial mode is open circuit mode; In the open circuit mode, the mechanical interlocking limit mechanism is in a natural limit state, the limit rod is inserted in the slide groove of the limit plate, the limit plate is limited by the limit rod, the movement range is limited, the drive shaft components of the two power switches are locked, and the movements of the two power switches are restricted. At this time, after one of the two power switches is closed, the other is in an open state; the two power switches can be opened at the same time but cannot be closed at the same time; In the closed-circuit mode, the interlocking electromagnet assembly in the mechanical interlocking limit mechanism is energized, the telescopic end of the interlocking electromagnet assembly shortens, driving the limit rod to be pulled out of the limit plate, the drive shaft assemblies of the two power switches are unlocked, and the two power switches are completely independent. At this time, the opening and closing actions of the two power switches do not affect each other.

7. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 2, characterized in that: The length from one end of the locking member close to the tripping electromagnet assembly to the mounting axis is shorter than the length from one end of the locking member far from the tripping electromagnet assembly to the mounting axis.

8. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 2, characterized in that: Each power switch also includes a manual tripping assembly, which includes a pressure rod, a fixed plate, a push rod, a tripping pressure plate and a reset spring; the pressure rod is fixed to the end of the locking member away from the tripping electromagnet assembly; the fixed plate is fixed to the bracket and is located above the pressure rod; the lower end of the push rod moves through the fixed plate to contact the pressure rod; the tripping pressure plate is installed on the upper end of the push rod; the reset spring is sleeved outside the push rod and is located between the fixed plate and the tripping pressure plate.

9. The open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to claim 8, characterized in that: It also includes a limiting plate, which is fixed on the bracket and located between the fixing plate and the tripping pressure plate, and is used to limit the downward movement position of the tripping pressure plate.

10. An open-circuit and closed-circuit dual-mode low-voltage dual-power automatic switching switch mechanism according to any one of claims 1 to 9, characterized in that: It also includes an electrical interlocking component, which includes a gasket, a micro switch and a paddle; the gasket is fixed on the telescopic end of the mechanical interlocking limit mechanism; the micro switch is installed on the bracket and corresponds to the position of the mechanical interlocking limit mechanism; one end of the paddle is linked to the micro switch, and the other end extends to the gasket.

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