CN111354581B - Multi-power switching device - Google Patents
Multi-power switching device Download PDFInfo
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- CN111354581B CN111354581B CN202010404852.2A CN202010404852A CN111354581B CN 111354581 B CN111354581 B CN 111354581B CN 202010404852 A CN202010404852 A CN 202010404852A CN 111354581 B CN111354581 B CN 111354581B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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- Mechanical Operated Clutches (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses a multi-power switching device, which comprises a supporting shaft, wherein a plurality of power supply end static contact sliding pieces which are uniformly distributed in the circumferential direction are arranged on the side wall of the supporting shaft, a switching turntable is rotatably arranged on the supporting shaft, a load end dynamic contact sliding piece matched with the power supply end static contact sliding piece is arranged on a dynamic claw at one side of the switching turntable, a self-progressive rotating mechanism for driving the switching turntable to rotate directionally is arranged in a shell, the self-progressive rotating mechanism comprises a progressive rotating assembly for driving the switching turntable to rotate along the circumferential direction, and the magnetic induction driving component which takes the electromagnetic field changed when the power supply is switched on and off as power and control signals to drive the progressive rotation component to act, the self-progressive rotation mechanism drives and controls the action of the switching turntable by utilizing the electromagnetic field change when the power supply is switched on and off, thereby not only saving energy, and the difficulty and the cost of automatic control are reduced, and the working stability of the power supply switching device is favorably improved.
Description
Technical Field
The embodiment of the invention relates to the field of power equipment, in particular to a multi-power supply switching device.
Background
With the progress of science and technology, the requirements of industrial production and people's life on the continuity and reliability of a power supply system are higher and higher. As the operation load of the power grid is increased, more and more line faults are caused, and phenomena such as phase loss, undervoltage, overcurrent and the like occur frequently. Therefore, main and standby independent dual-power circuits are needed to supply power for important users such as airports, fire-fighting, hospitals and military affairs, so as to ensure the continuity and reliability of power supply.
However, the multi-power switching device in the prior art needs to rely on a control system, that is, the control system judges the states of the main power supply and the standby power supply, and then controls corresponding components to execute power switching, but because of the electromagnetic field near the normal power supply, negative effects can be caused on information acquisition and information transmission of the control system, especially near the high-voltage and high-current power supply, the electromagnetic field has high intensity, the requirement on the electromagnetic shielding level is high, the use cost of the power switching device is increased, and the problem that the stability and the reliability of the power switching device are poor due to the electromagnetic field is not fundamentally improved.
Disclosure of Invention
Therefore, the embodiment of the invention provides a multi-power switching device to solve the problem that in the prior art, the stability and reliability are reduced because the conventional multi-power switching device needs to depend on an external control system to perform power switching.
In order to achieve the above object, the embodiment of the present invention discloses the following technical solutions:
a multi-power switching device comprises a shell, wherein a supporting shaft is arranged in the shell, a plurality of power end static contact sliding pieces which are uniformly distributed in the circumferential direction are arranged on the side wall of the supporting shaft, a switching turntable is rotatably arranged on the supporting shaft, a movable claw is arranged on one side of the switching turntable, and a load end movable contact sliding piece matched with the power end static contact sliding pieces is arranged on the movable claw;
the self-progressive rotating mechanism is characterized in that the self-progressive rotating mechanism is arranged in the shell and drives the switching turntable to rotate directionally so as to realize power switching, the self-progressive rotating mechanism comprises a progressive rotating component which drives the switching turntable to rotate along the circumferential direction, and a magnetic induction driving component which drives the progressive rotating component to act by taking an electromagnetic field which changes when a power supply is switched on and off as power and a control signal, and an electric power attraction retaining mechanism which is used for preventing the movable contact piece at the load end from being flicked when in contact with the static contact piece at the power end is arranged in the shell.
Furthermore, the progressive rotation assembly comprises a guide sleeve, a fixed sliding claw sleeve, a movable sliding claw sleeve and a clutch lever, the guide sleeve is fixedly arranged in the shell, the fixed sliding claw sleeve is fixedly arranged in the guide sleeve, the movable sliding claw sleeve is axially and rotationally arranged in the guide sleeve, the magnetic induction driving assembly is connected with or separated from the movable sliding claw sleeve through the clutch lever, and the clutch lever is circumferentially and fixedly connected with the movable sliding claw sleeve;
the switching mechanism is characterized in that oblique-toothed sliding claws are arranged at one ends, connected with the fixed sliding claw sleeve and the movable sliding claw sleeve, of the fixed sliding claw sleeve, key shaft holes are formed in one ends of the movable sliding claw sleeve, key shafts in sliding fit with the key shaft holes are installed at the axes of the switching turntables, and the movable sliding claw sleeve is connected with the switching turntables through thrust springs.
Furthermore, a center hole in sliding fit with the clutch rod is formed in the fixed sliding claw sleeve in a penetrating mode, a counter bore matched with the clutch rod is formed in one end of the movable sliding claw sleeve, the cross section of the clutch rod is square, and the center hole and the counter bore are matched with the appearance of the clutch rod.
Furthermore, a plate groove is formed in one side, opposite to the inclined plane, of each sliding claw, the inclined plane is installed in the plate groove in a sliding mode, an expansion spring used for pushing the inclined plane to cross the transition plate is installed in the plate groove, one end of the expansion spring is installed on the wall of the plate groove, the other end of the expansion spring is installed on the inclined plane to cross the transition plate, two sliding claws matched with each other are installed on the fixed sliding claw sleeve and the movable sliding claw sleeve, and transition connection between the inclined planes is achieved through the inclined plane to cross the transition plate.
Furthermore, the inclined plane transition plate is connected with the plate groove through a plurality of guide rods, guide holes in sliding fit with the guide rods are formed in the sliding claws, and the telescopic springs are sleeved on the guide rods.
Furthermore, the magnetic induction driving assembly comprises an armature, an iron core matched with the armature, an excitation coil sleeved outside the iron core, and a power end insulated wire electrically connected with the power end static contact sliding piece, wherein a reset spring with one end fixed on the shell is sleeved on the iron core, and the other end of the reset spring is connected with the armature;
the power end insulated wire is positioned between the magnet exciting coil and the iron core, and the clutch lever is connected with the armature through a crank pair.
Furthermore, the electrodynamic attraction holding mechanism comprises a linear conductor fixedly mounted on the movable claw and a plurality of folding conductors fixedly mounted on the supporting shaft, the current direction of one side of each U-shaped folding conductor is the same as that of the linear conductor, an electromagnetic shielding layer is mounted on the other side of each folding conductor, each folding conductor is connected with the power end static contact sliding sheet, and the load end movable contact sliding sheet is connected with the power end insulated lead through the linear conductor.
Furthermore, the electromagnetic shielding layer sequentially comprises an insulating layer, a conductive silicone rubber layer, a metal mesh shielding layer and an aluminum foil layer from inside to outside.
The embodiment of the invention has the following advantages:
the magnetic induction driving assembly generates electromagnetic force through electromagnetic field change near a lead when a power supply is switched on, and drives the progressive rotation assembly to act at the moment of power supply disconnection, so that the movable claw moves towards the next power supply end static contact sliding piece until the load end dynamic contact sliding piece connected with a load is connected with the power supply end static contact sliding piece connected with the power supply, thereby realizing the switching of the power supply, the self-progressive rotation mechanism drives and controls the action of the switching turntable by utilizing the electromagnetic field change when the power supply is switched on and off, the energy is saved, the difficulty and the cost of automatic control are reduced, and the working stability of the power supply switching device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a folded conductor structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a progressive rotation assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a sliding jaw configuration according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electromagnetic shielding layer according to an embodiment of the present invention.
In the figure:
1-a shell; 2-supporting the shaft; 3-power end static contact sliding sheet; 4-switching the rotary table; 5-moving the claw; 6-moving the contact blade at the load end; 7-a self-progressive rotation mechanism; 8-electrodynamic attraction holding mechanism; 9-plate groove; 10-inclined plane transition plate; 11-a telescopic spring; 12-a guide bar; 13-an electromagnetic shielding layer;
701-a progressive rotation assembly; 702-a magnetic induction drive assembly;
7011-guide sleeve; 7012-fixed sliding claw sleeve; 7013-sliding claw sleeve; 7014-clutch lever; 7015-sliding jaw; 7016-key shaft; 7017-a thrust spring;
7021-armature; 7022-iron core; 7023-field coil; 7024-power supply end insulated wire; 7025-a return spring; 7026-crank pair;
801-linear conductor; 802-folded conductors;
1301-an insulating layer; 1302-a conductive silicone rubber layer; 1303-metal mesh shielding layer; 1304-aluminium foil layer.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, the invention provides a multi-power switching device, which comprises a housing 1, wherein a supporting shaft 2 is installed in the housing 1, a plurality of power end static contact sliding pieces 3 which are uniformly distributed in the circumferential direction are installed on the side wall of the supporting shaft 2, a switching turntable 4 is rotatably installed on the supporting shaft 2, a movable claw 5 is installed on one side of the switching turntable 4, and a load end movable contact sliding piece 6 which is matched with the power end static contact sliding pieces 3 is installed on the movable claw 5.
The self-progressive rotating mechanism 7 for driving the switching rotary disc 4 to directionally rotate so as to realize power switching is installed in the shell 1, the self-progressive rotating mechanism 7 comprises a progressive rotating component 701 for driving the switching rotary disc 4 to rotate along the circumferential direction, and a magnetic induction driving component 702 for driving the progressive rotating component 701 to act by taking an electromagnetic field which changes when a power supply is switched on and off as power and a control signal, and an electric power attraction holding mechanism 8 for preventing the movable contact slide piece 6 at the load end from being bounced off when being contacted with the static contact slide piece 3 at the power end is installed in the shell 1.
The magnetic induction drive assembly 702 generates electromagnetic force through electromagnetic field change near the wire when the power is switched on, and at the moment of power disconnection, the progressive rotation assembly 701 is driven to act, when a certain power is disconnected due to a fault, the progressive rotation assembly 701 is driven by the magnetic induction drive assembly 702, and the switching turntable 4 is driven to rotate to one side, so that the moving claw 5 moves towards the next power supply end static contact slide piece 3 until the load end moving contact piece 6 connected with a load is connected with the power supply end static contact slide piece 3 connected with the power, and the switching of the power is realized.
The self-progressive rotating mechanism 7 drives and controls the action of the switching turntable 4 by utilizing the electromagnetic field change when the power supply is switched on and off, thereby not only saving energy and reducing the difficulty and cost of automatic control, but also avoiding the condition that a control system is interfered by the electromagnetic field to cause failure or error in the prior art, and further improving the working stability of the power supply switching device.
In order to prevent the movable contact sliding piece 6 at the load end from being repelled when contacting with the static contact sliding piece 3 at the power end, an electric force attraction holding mechanism 8 for preventing the movable contact sliding piece 6 at the load end from being repelled when contacting with the static contact sliding piece 3 at the power end is arranged in the shell 1.
The details of the progressive rotation assembly 701 are as follows:
the progressive rotation component 701 comprises a guide sleeve 7011, a fixed sliding claw sleeve 7012, a movable sliding claw sleeve 7013 and a clutch rod 7014, the guide sleeve 7011 is fixedly installed in the shell 1, the fixed sliding claw sleeve 7012 is fixedly installed in the guide sleeve 7011, the movable sliding claw sleeve 7013 is axially, slidably and rotatably installed in the guide sleeve 7011, the magnetic induction driving component 702 is connected with or separated from the movable sliding claw sleeve 7013 through the clutch rod 7014, and the clutch rod 7014 is circumferentially and fixedly connected with the movable sliding claw sleeve 7013.
The end of the fixed sliding claw sleeve 7012 connected with the movable sliding claw sleeve 7013 is provided with a skewed tooth-shaped sliding claw 7015, one end of the movable sliding claw sleeve 7013 is provided with a key shaft hole, the axis of the switching turntable 4 is provided with a key shaft 7016 in sliding fit with the key shaft hole, and the movable sliding claw sleeve 7013 is connected with the switching turntable 4 through a thrust spring 7017.
When any power supply is switched on, the magnetic induction driving component 702 drives the clutch bar 7014 to push the movable sliding claw sleeve 7013 to be away from the fixed sliding claw sleeve 7012 until the fixed sliding claw sleeve 7012 is separated from the sliding claw 7015 on the movable sliding claw sleeve 7013, and the inclined surfaces of the fixed sliding claw sleeve 7012 and the sliding claw 7015 on the movable sliding claw sleeve 7013 are abutted with each other.
When a power supply of a certain path is broken or is broken due to faults, the clutch rod 7014 loses support, the clutch rod 7014 and the movable sliding claw sleeve 7013 are pushed to reset under the action of the thrust spring 7017, in the process, the sliding claw 7015 on the movable sliding claw sleeve 7013 axially moves and circumferentially moves along the inclined surface of the sliding claw 7015 on the fixed sliding claw sleeve 7012 until being meshed with each other, meanwhile, the movable sliding claw sleeve 7013 axially slides along the key shaft 7016 and drives the switching rotary disc 4 to synchronously rotate through the key shaft 7016, the sliding claws 7015 correspond to the power supply end static contact sliding pieces 3 one by one, and therefore when the sliding claws 7015 on the fixed sliding claw sleeve 7012 and the movable sliding claw sleeve 7013 are meshed with each other, the load end movable contact sliding piece 6 just moves to the next power supply end static contact sliding piece 3 from the previous power supply end static contact sliding piece 3.
The inside of the fixed sliding claw sleeve 7012 is penetrated with a center hole which is in sliding fit with the clutch rod 7014, one end of the movable sliding claw sleeve 7013 is provided with a counter bore which is matched with the clutch rod 7014, the cross section of the clutch rod 7014 is square, and the center hole and the counter bore are matched with the appearance of the clutch rod 7014, so that the clutch rod 7014 and the movable sliding claw sleeve 7013 are circumferentially fixed, and the movable sliding claw sleeve 7013 is prevented from rotating before being separated from the clutch rod 7014.
The sliding claw 7015 is provided with a plate groove 9 on one side opposite to the inclined plane, an inclined plane transition plate 10 is installed in the plate groove 9 in a sliding mode, an expansion spring 11 used for pushing the inclined plane transition plate 10 is installed in the plate groove 9, one end of the expansion spring 11 is installed on the groove wall of the plate groove 9, the other end of the expansion spring is installed on the inclined plane transition plate 10, two sliding claws 7015 matched with each other on a fixed sliding claw sleeve 7012 and a movable sliding claw sleeve 7013 are achieved, and transition connection between the inclined planes is achieved through the inclined plane transition plate 10.
Namely, after the sliding pawls 7015 on the fixed sliding pawl sleeve 7012 and the movable sliding pawl sleeve 7013 are separated in the axial direction, the inclined surface transition plates 10 on the two opposite sides are partially ejected under the pushing of the telescopic springs 11, so that the inclined surfaces at the end parts of the inclined surface transition plates 10 on the two sides are connected with each other, and the inclined surfaces of the sliding pawls 7015 on the two sides are in transitional connection through the inclined surfaces of the inclined surface transition plates 10 on the two sides, so that the sliding pawls 7015 on the two sides are matched with each other after being separated.
Furthermore, the back side of the inclined plane transition plate 10 is connected with the plate groove 9 through a plurality of guide rods 12, a guide hole in sliding fit with the guide rod 12 is formed in the sliding claw 7015, the telescopic spring 11 is sleeved on the guide rod 12, and the inclined plane transition plate 10 is axially fixed and circumferentially guided through the guide rod 12.
Specific descriptions of the magnetic induction drive assembly 702 are as follows:
the magnetic induction driving component 702 comprises an armature 7021, an iron core 7022 matched with the armature 7021, an excitation coil 7023 sleeved outside the iron core 7022, and a power supply end insulated wire 7024 electrically connected with the power supply end static contact sliding piece 3, wherein a return spring 7025 with one end fixed on the shell 1 is sleeved on the iron core 7022, the other end of the return spring 7025 is connected with the armature 7021, the power supply end insulated wire 7024 is positioned between the excitation coil 7023 and the iron core 7022, and the clutch bar 7014 is connected with the armature 7021 through a crank pair 7026.
When a current flows through one of the insulated end conductors 7023, the current and the magnetic field are generated in the excitation coil 7023 under the action of an electromagnetic field near the insulated end conductor, so that the iron core 7022 positioned at the center attracts the armature 7021 to act, and the armature 7021 pulls the power end of the crank pair 7026 and pushes the clutch bar 7014 at the other end through the crank pair 7026.
The electric power suction holding mechanism 8 is specifically described as follows:
the electrodynamic attraction holding mechanism 8 comprises a linear conductor 801 fixedly mounted on the movable claw 5 and a plurality of folding conductors 802 fixedly mounted on the supporting shaft 2, wherein one side of the U-shaped folding conductor 802 has the same current direction as the linear conductor 801, the other side of the U-shaped folding conductor 802 is provided with an electromagnetic shielding layer 13, the folding conductor 802 is connected with the power supply end static contact slide sheet 3, and the load end movable contact slide sheet 6 is connected with a power supply end insulated wire 7024 through the linear conductor 801.
The electric force is a force formed by that a magnetic field is arranged around a current lead and acts on a ferromagnetic substance in the range of the magnetic field to force the magnetic field, so that two leads with current in the same direction attract each other and two leads with current in the opposite direction repel each other.
The directions of the currents on the side where the folded conductor 802 and the linear conductor 801 are connected with each other are opposite, that is, the electrodynamic forces of the two are repulsive forces, so that the magnetic field of the conductor folded on the side of the conductor 802 is shielded by the electromagnetic shielding layer 13, and the power end static contact slide 3 and the load end movable contact slide 6 are prevented from being repelled from each other by the electrodynamic forces of the linear conductor 801 and the other side of the folded conductor 802 which are mutually attracted, so that the self-progressive rotation mechanism 7 is prevented from being damaged, more importantly, good contact between the power end static contact slide 3 and the load end movable contact slide 6 is ensured, and the normal implementation of the power switching function is ensured.
The electromagnetic shielding layer 13 includes an insulating layer 1301, a conductive silicone rubber layer 1302, a metal mesh shielding layer 1303 and an aluminum foil layer 1304 from inside to outside in sequence, wherein the insulating layer 1301 is an insulating rubber of a common wire and prevents a current from passing between the folded conductor 802 and the conductive silicone rubber layer 1302.
The conductive silicone rubber layer 1302 is formed by adding conductive filler, cross-linking agent and the like into silicone rubber as base rubber, and blending and vulcanizing, the conductive silicone rubber layer 1302 facilitates the smooth arrangement of the appearance of the electromagnetic shielding layer 13, and preferably, the metal mesh shielding layer 1303 formed by surrounding of a metal mesh is embedded in the conductive silicone rubber layer 1302 to reduce the thickness of the electromagnetic shielding layer 13, and the negative effects of mutual repulsive electrodynamic force between the linear conductor 801 and the folded conductor 802 are avoided or reduced through the multilayer electromagnetic shielding of the conductive silicone rubber layer 1302, the metal mesh shielding layer 1303 and the aluminum foil layer 1304.
It is further explained that the movable claw 5 is provided with an arc-extinguishing chamber arranged adjacent to the movable contact slide 6 at the load end, the arc-extinguishing chamber generally comprises an arc-shaped insulating frame positioned at one side of the power end fixed contact slide 3 and a plurality of layers of arc-shaped metal grid plates arranged in the insulating frame at intervals, and the arc generated when the movable contact at the load end is contacted with the power end fixed contact is absorbed in the insulating frame by the arc-shaped metal grid plates.
It is further explained that a slip ring connected with the deflecting conductor 802 through a wire is installed in the switching turntable 4, a load end conductive post electrically connected with the slip ring is installed in the supporting shaft 2, the slip ring is rotatably installed on the load end conductive post to cooperate with the rotation of the switching turntable 4, one end of the load end conductive post penetrates through the housing 1 for connecting a load, and correspondingly, the switching turntable 4 is made of an insulating hard material.
It is further described that, in order to prevent the armature 7021 from being not timely reset by the reset spring 7025 due to self-inductance of the excitation coil 7023 when the power-supply-end insulated wire 7024 is powered off, the excitation coil 7023 is connected to a freewheeling diode, or other means known in the art, so that the self-inductance current is rapidly released, and the power supply switching delay caused by the armature 7021 not being timely reset is avoided.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A multi-power switching device is characterized by comprising a shell (1), wherein a supporting shaft (2) is installed in the shell (1), a plurality of power end static contact sliding pieces (3) which are uniformly distributed in the circumferential direction are installed on the side wall of the supporting shaft (2), a switching turntable (4) is installed on the supporting shaft (2) in a rotating mode, a moving claw (5) is installed on one side of the switching turntable (4), and a load end dynamic contact sliding piece (6) matched with the power end static contact sliding pieces (3) is installed on the moving claw (5);
a self-progressive rotating mechanism (7) for driving the switching turntable (4) to rotate directionally to realize power switching is arranged in the shell (1); the self-progressive rotating mechanism (7) comprises a progressive rotating component (701) for driving the switching turntable (4) to rotate along the circumferential direction, and a magnetic induction driving component (702) for driving the progressive rotating component (701) to act by taking an electromagnetic field which changes when a power supply is switched on and off as power and a control signal; an electric power attraction holding mechanism (8) for preventing the load end movable contact slide (6) from being flicked when contacting with the power end static contact slide (3) is arranged in the shell (1);
the progressive rotation component (701) comprises a guide sleeve (7011), a fixed sliding claw sleeve (7012), a movable sliding claw sleeve (7013) and a clutch rod (7014), the guide sleeve (7011) is fixedly installed in the shell (1), the fixed sliding claw sleeve (7012) is fixedly installed in the guide sleeve (7011), the movable sliding claw sleeve (7013) is axially and rotatably installed in the guide sleeve (7011), the magnetic induction driving component (702) is connected with or separated from the movable sliding claw sleeve (7013) through the clutch rod (7014), and the clutch rod (7014) is circumferentially and fixedly connected with the movable sliding claw sleeve (7013);
one end of the fixed sliding claw sleeve (7012) connected with the movable sliding claw sleeve (7013) is provided with a skewed tooth-shaped sliding claw (7015), the other end of the movable sliding claw sleeve (7013) is provided with a key shaft hole, a key shaft (7016) in sliding fit with the key shaft hole is installed at the axis of the switching turntable (4), and the movable sliding claw sleeve (7013) is connected with the switching turntable (4) through a thrust spring (7017);
the magnetic induction driving assembly (702) comprises an armature (7021), an iron core (7022) matched with the armature (7021), an excitation coil (7023) sleeved outside the iron core (7022), and a power supply end insulated lead (7024) electrically connected with the power supply end static contact sliding piece (3), wherein a reset spring (7025) with one end fixed on the shell (1) is sleeved on the iron core (7022), and the other end of the reset spring (7025) is connected with the armature (7021);
the power end insulated wire (7024) is positioned between the excitation coil (7023) and the iron core (7022), and the clutch rod (7014) is connected with the armature (7021) through a crank pair (7026).
2. The multi-power switching device according to claim 1, wherein a central hole in sliding fit with the clutch rod (7014) penetrates through the fixed sliding claw sleeve (7012), a counter bore in sliding fit with the clutch rod (7014) is formed in one end of the movable sliding claw sleeve (7013), the cross section of the clutch rod (7014) is square, and the central hole and the counter bore are matched with the outer shape of the clutch rod (7014).
3. The multi-power switching device according to claim 2, wherein a plate groove (9) is formed in one side of the sliding claw (7015) opposite to the inclined plane, an inclined plane transition plate (10) is slidably mounted in the plate groove (9), a telescopic spring (11) for pushing the inclined plane transition plate (10) is mounted in the plate groove (9), one end of the telescopic spring (11) is mounted on the groove wall of the plate groove (9), the other end of the telescopic spring is mounted on the inclined plane transition plate (10), and two sliding claws (7015) matched with each other on the fixed sliding claw sleeve (7012) and the movable sliding claw sleeve (7013) realize transition connection between the inclined planes through the inclined plane transition plate (10).
4. A multi-power switching device according to claim 3, wherein the inclined transition plate (10) is connected with the plate groove (9) through a plurality of guide rods (12), a guide hole in sliding fit with the guide rod (12) is formed in the sliding claw (7015), and the telescopic spring (11) is sleeved on the guide rod (12).
5. A multiple power supply switching apparatus according to claim 1, wherein said electric power attraction holding mechanism (8) comprises a linear conductor (801) fixedly mounted on said movable claw (5), and a plurality of bent conductors (802) fixedly mounted on said support shaft (2), one side of said bent conductors (802) having a U-shape having a current direction identical to that of said linear conductor (801), and the other side of said bent conductors (802) having an electromagnetic shield layer (13) mounted thereon, said bent conductors (802) being connected to said power supply side stationary contact piece (3), said load side movable contact piece (6) being connected to said power supply side insulated wire (7024) through said linear conductor (801).
6. A multi-power switching device according to claim 5, wherein said electromagnetic shielding layer (13) comprises an insulating layer (1301), a conductive silicone rubber layer (1302), a metal mesh shielding layer (1303) and an aluminum foil layer (1304) in sequence from inside to outside.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404852.2A CN111354581B (en) | 2020-05-14 | 2020-05-14 | Multi-power switching device |
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|---|---|---|---|
| CN202010404852.2A CN111354581B (en) | 2020-05-14 | 2020-05-14 | Multi-power switching device |
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| CN111354581A CN111354581A (en) | 2020-06-30 |
| CN111354581B true CN111354581B (en) | 2020-08-21 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112038189B (en) * | 2020-08-19 | 2022-02-18 | 苏州飞腾电器有限公司 | Three-power-supply automatic change-over switch |
| CN113156255A (en) * | 2021-05-11 | 2021-07-23 | 天津七一二移动通信有限公司 | Device capable of switching multi-channel signals in autonomous rotation mode and implementation method |
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| GB343983A (en) * | 1929-11-27 | 1931-02-27 | Louis Joseph Jean Schreiber | Improvements in or relating to step-by-step selectors for telephone or like systems |
| CN201000834Y (en) * | 2007-02-02 | 2008-01-02 | 浙江省三门腾龙电器有限公司 | Tapping switch gear sensor |
| CN106057543A (en) * | 2016-07-28 | 2016-10-26 | 东南电子股份有限公司 | Rotary switch |
| CN205943885U (en) * | 2016-08-15 | 2017-02-08 | 贵州振华华联电子有限公司 | Take blocking function's sealed rotary switch |
| CN109326477A (en) * | 2018-11-21 | 2019-02-12 | 安徽银点电子科技有限公司 | A kind of rotary multi-level switch |
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