CN108878185B - Two-stage automatic change-over switch electric appliance - Google Patents
Two-stage automatic change-over switch electric appliance Download PDFInfo
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- CN108878185B CN108878185B CN201810570635.3A CN201810570635A CN108878185B CN 108878185 B CN108878185 B CN 108878185B CN 201810570635 A CN201810570635 A CN 201810570635A CN 108878185 B CN108878185 B CN 108878185B
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- assembly
- swing arm
- arm assembly
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- rod
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
The invention discloses a two-stage automatic transfer switching device, which comprises a main loop device and a transfer operation device; the conversion operation device is arranged on one side of the main loop device and is in linkage connection with the main loop device; the conversion operation device comprises a bracket, a first electromagnetic assembly arranged on the bracket, a swing arm assembly rotatably arranged on the bracket, a rotating shaft assembly arranged on the bracket and connected with the swing arm assembly in a linkage manner, a locking arm assembly arranged on the bracket and a pressure spring assembly; the first electromagnetic assembly is connected with the swing arm assembly and drives the swing arm assembly to rotate back and forth; the locking arm assembly is provided with a locking position, and the swing arm assembly is provided with a shaft part; when the swing arm component rotates in one direction, the rotating shaft component is driven to rotate, and the shaft part slides into the locking position; when the swing arm component rotates in the opposite direction, the rotating shaft component is driven to rotate in the opposite direction, and the shaft part slides out of the locking position. The first electromagnetic assembly and the pressure spring assembly are arranged on the conversion operation device and serve as power sources, driving force is provided for rotation of the rotating shaft assembly, and the function of two stages is achieved.
Description
Technical Field
The invention relates to the technical field of automatic transfer switching equipment, in particular to a two-stage automatic transfer switching equipment.
Background
The change-over switch electric appliance is a common low-voltage electric appliance, is commonly used in important power distribution occasions (such as hospital power supply systems), is used for switching two paths of power supplies, and can be quickly switched to a standby power supply when the common power supply fails in the power supply process, so that the normal power supply of a load end is ensured.
In the existing two-section automatic transfer switching equipment, the moving contact component mainly adopts a single-contact clapping type structure, and the product has lower connecting and breaking capacity and short endurance index. The switching operation device realizes the function of two sections by utilizing a structural mode that a Y-shaped groove is added with a poking plate, the switching-on force is kept by a pressure spring assembly, and the pressure spring needs to provide very large force to overcome the over-travel reaction force generated by the pressure spring on the pressure spring assembly because a moving contact assembly mainly adopts a single-contact clapping type structure, so that the reliability of the switching operation device is low.
Disclosure of Invention
The invention aims to provide an improved two-stage automatic transfer switching device.
The technical scheme adopted by the invention for solving the technical problems is as follows: the two-stage automatic change-over switch electric appliance comprises a main loop device and a change-over operation device for providing driving force for the main loop device; the conversion operation device is arranged on one side of the main loop device and is in linkage connection with the main loop device;
the conversion operation device comprises a support, a first electromagnetic assembly arranged on the support, a swing arm assembly rotatably arranged on the support, a rotating shaft assembly arranged on the support and connected with the swing arm assembly in a linkage manner, a locking arm assembly arranged on the support and a pressure spring assembly connected between the support and the swing arm assembly; the first electromagnetic assembly and the pressure spring assembly are connected with the swing arm assembly and drive the swing arm assembly to rotate back and forth;
the locking arm assembly is provided with a locking position, and the swing arm assembly is provided with a shaft part matched with the locking position; when the swing arm component rotates towards one direction, the rotating shaft component is driven to rotate, and meanwhile, the shaft part slides into the locking position; when the swing arm assembly rotates in the opposite direction, the rotating shaft assembly is driven to rotate in the opposite direction, and meanwhile, the shaft part slides out of the locking position.
Preferably, the switching operation device further comprises a second electromagnetic assembly mounted on the bracket; the second electromagnetic assembly is connected with the locking arm assembly and drives the locking arm assembly to rotate back and forth;
when the second electromagnetic assembly is electrified, the locking arm assembly is driven to rotate, and the locking position of the locking arm assembly is driven to be separated from the shaft part of the swing arm assembly.
Preferably, the locking arm assembly and the swing arm assembly are oppositely arranged;
the swing arm assembly comprises a swing rod which is rotatably arranged on the bracket in a penetrating way and a swing arm which is connected to the swing rod and can rotate along with the swing rod; the shaft part is arranged at the upper end of the swing arm, and the first electromagnetic assembly is connected with the lower end of the swing arm;
the locking arm assembly comprises a locking rod which is rotatably arranged on the bracket in a penetrating way and a locking arm which is connected to the locking rod and can rotate along with the locking rod; the locking position is arranged on the locking arm.
Preferably, the switching operation device further comprises a first micro switch electrically connected with the first electromagnetic assembly, and a second micro switch electrically connected with the second electromagnetic assembly, wherein the first micro switch and the second micro switch are mounted on the bracket near the locking arm assembly;
the locking arm assembly further comprises a pressing rod which is connected to the locking rod and can rotate along with the locking rod, and the pressing rod can separately abut against the first microswitch and the second microswitch along with the rotation of the locking rod.
Preferably, the rotating shaft assembly comprises a rotating shaft main body which is rotatably arranged on the bracket and protrudes out of one side of the bracket facing the main circuit device, and a connecting arm hinged with the rotating shaft main body; and one end of the connecting arm, which is far away from the rotating shaft main body, is connected with the swing arm assembly.
Preferably, a common power supply in-place microswitch and a standby power supply in-place microswitch are arranged on one side surface of the bracket facing the main loop device; the common power supply in-place microswitch and the standby power supply in-place microswitch are positioned on two sides of the rotating shaft main body, a first pressing piece and a second pressing piece which extend outwards are arranged on the rotating shaft main body, and the first pressing piece and the second pressing piece can separately press the common power supply in-place microswitch and the standby power supply in-place microswitch along with the rotation of the rotating shaft main body.
Preferably, the pressure spring assembly comprises a shaft rod, a sleeve rod, a first pressure spring and a second pressure spring;
one end of the shaft lever is connected to the bracket, one end of the sleeve lever is sleeved on the other end of the shaft lever, and the other end of the sleeve lever is connected with the swing arm assembly; the first pressure spring is arranged in the loop bar and is abutted between the shaft lever and the swing arm assembly, and the second pressure spring is sleeved on the peripheries of the loop bar and the shaft lever and is abutted between the support and the swing arm assembly.
Preferably, the conversion operation device further comprises a mask which covers the bracket and covers the first electromagnetic assembly, the swing arm assembly, the rotating shaft assembly and the locking arm assembly; the face guard is provided with a button assembly which can be separated and pressed against the locking arm assembly to drive the locking arm assembly to rotate.
Preferably, said primary circuit means comprises a plurality of sequentially stacked monopolar assemblies; the single-pole assembly comprises a shell, a movable contact assembly, a first fixed contact assembly, a second fixed contact assembly and an arc extinguish chamber, wherein the movable contact assembly is rotatably arranged in the shell;
the movable contact assemblies on two adjacent single-pole assemblies are matched and linked through the concave-convex structures;
the movable contact assembly of the single-pole assembly positioned on one side of the main loop device facing the switching operation device is in linkage connection with the rotating shaft assembly through a concave-convex structure on the movable contact assembly;
the opening of the arc extinguish chamber faces the moving contact component, and the first fixed contact component and the second fixed contact component are positioned at two ends of the opening; the contact end of the movable contact component extends into the arc extinguishing chamber through the opening and can rotate back and forth to be respectively in contact conduction with the first fixed contact component and the second fixed contact component.
Preferably, the automatic transfer switching apparatus further comprises at least one connection fastening assembly; the connecting and fastening assembly is arranged between the main loop device and the conversion operation device in a penetrating mode and connects the main loop device and the conversion operation device.
The invention has the beneficial effects that: the first electromagnetic assembly and the pressure spring assembly are arranged on the conversion operation device and serve as power sources to provide driving force for forward and reverse rotation of the rotating shaft assembly, the switching-on and switching-off of the movable contact assembly in the main loop device are driven, and the two-stage function is achieved (the switching-on state is kept in a common power supply or a standby power supply). The cooperation of swing arm subassembly and locking arm subassembly forms the hasp structure, forms reliable mechanical interlocking.
The whole structure is simple and reliable, and the function of two sections is easy to realize.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of an automatic transfer switching apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the switch operating device and the main circuit device of FIG. 1 in a disassembled configuration;
FIG. 3 is a schematic view of the structure of the shift operating device of FIG. 2;
FIG. 4 is a schematic view of an exploded structure of the switching operation device shown in FIG. 3;
FIG. 5 is a schematic structural view of the switching operation device shown in FIG. 3 in another direction (with the structure of the bracket portion omitted);
FIG. 6 is a schematic cross-sectional view of the switching operation device of FIG. 3 taken along line A-A;
FIG. 7 is a schematic cross-sectional view of the switching operation device shown in FIG. 3 taken along line B-B;
FIG. 8 is a schematic structural view of the monopolar assembly of FIG. 2;
figure 9 is a schematic view of the movable contact assembly of figure 8 in another orientation;
fig. 10 is a schematic view of the mating structure of the switching operator and the movable contact assembly of the single pole assembly of fig. 2;
fig. 11 is a schematic view of the structure of the mask and button assembly of fig. 1.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the automatic transfer switching apparatus according to an embodiment of the present invention at least includes a main circuit device 1 and a transfer operation device 2; the switching operation device 2 is arranged on one side of the main loop device 1 and is in linkage connection with the main loop device 1, provides driving force for the main loop device 1, and achieves the opening and closing functions of the main loop device 1.
As shown in fig. 3 and 4, the switching operation device 2 may include a bracket 10, a first electromagnetic assembly 20 mounted on the bracket 10, a swing arm assembly 30 rotatably mounted on the bracket 10, a rotating shaft assembly 40 mounted on the bracket 10 and coupled to the swing arm assembly 30 in an interlocking manner, and a locking arm assembly 50 mounted on the bracket 10. The first electromagnetic assembly 20 is connected with the swing arm assembly 30 and drives the swing arm assembly 30 to rotate back and forth, and the swing arm assembly 30 drives the rotating shaft assembly 40 to rotate clockwise or anticlockwise when rotating.
The swing arm assembly 30 and the locking arm assembly 50 are correspondingly arranged. Wherein, the locking arm assembly 50 is provided with a locking position 501, and the swing arm assembly 30 is provided with a shaft part 301 matched with the locking position 501; when the swing arm assembly 30 rotates in one direction, the rotating shaft assembly 40 is driven to rotate, and meanwhile, the shaft part 301 slides into the locking position 501 to form a locking structure; when the swing arm assembly 30 rotates in the opposite direction (opposite to the above-mentioned one direction), the rotating shaft assembly 40 is driven to rotate in the opposite direction, and the shaft portion 301 slides out of the locking position 501.
Specifically, the support 10 may be an integral structure, or may be formed by combining a plurality of support plates, such as a bottom plate, a plurality of side plates, and the like. The bracket 10 has a receiving space for receiving the first electromagnetic assembly 20, the swing arm assembly 30, the rotating shaft assembly 40, the locking arm assembly 50, and the like.
On the support 10, the locking arm assembly 50 and the swing arm assembly 30 are oppositely arranged, the first electromagnetic assembly 20 is positioned on the same side as the locking arm assembly 50, and the movable iron core of the first electromagnetic assembly 20 faces and is connected with the swing arm assembly 30, and the movable iron core drives the swing arm assembly 30 to rotate under the condition of being electrified.
The swing arm assembly 30 comprises a swing rod 31 rotatably arranged on the bracket 10 in a penetrating way and a swing arm 32 connected to the swing rod 31 and capable of rotating along with the swing rod 31. The shaft portion 301 is disposed at an upper end of the swing arm 32, and the first solenoid assembly 20 is coupled to a lower end of the swing arm 32. In this embodiment, as shown in fig. 4, the swing arm 32 is fixed on the swing rod 31 in a penetrating manner, the upper end of the swing arm extends towards the locking arm assembly 50, and the shaft portion 301 is a cylindrical structure and is disposed at the upper end of the swing arm 32 and is axially parallel to the axial direction of the swing rod 31. The lower end of the swing arm 32 extends to the lower part of the swing rod 31, the lower end of the swing arm 32 is provided with at least one connecting shaft 33, and one end of the movable iron core of the first electromagnetic assembly 20 is connected to one connecting shaft 33; the axial direction of the connecting shaft 33 is parallel to the axial direction of the oscillating bar 31.
Further, in the present embodiment, the swing link 31 is a square rod; the swing arm 32 is L-shaped. At least one end of the swing link 31 may be provided with a hole for insertion of a tool such as a handle, for facilitating manual rotation of the swing arm assembly 30.
The locking arm assembly 50 comprises a locking rod 51 rotatably arranged on the bracket 10 in a penetrating way, and a locking arm 52 connected to the locking rod 51 and capable of rotating along with the locking rod 51; the latch station 501 is provided on the latch arm 52. In this embodiment, as shown in fig. 4, one end of the locking arm 52 is fixed on the locking rod 51, and the other end extends below the locking rod 51, and the latch position 501 is located below the locking rod 51 on the locking arm 52 and faces the swing arm assembly 30.
Further, in the present embodiment, the lock lever 51 is a square lever.
The shaft portion 301 of the swing arm assembly 30 may be rotated to slide into the latch location 501 or rotated to slide out of the latch location 501 along the bottom surface of the latch location 501. Preferably, the side of the lower end of the locking arm 52 facing the swing arm assembly 30 and connected to the locking position 501 is an arc-shaped surface 502, and the shaft portion 301 can be fitted on the arc-shaped surface 502 after sliding out of the locking position 501.
As shown in fig. 4 and 5, the rotating shaft assembly 40 includes a rotating shaft main body 41 and a connecting arm 42 hinged to the rotating shaft main body 41. The main shaft body 41 is rotatably mounted on the bracket 10 and protrudes from a side of the bracket 10 facing the main circuit device 1 to be coupled with the main circuit device 1. The end of the connecting arm 42 remote from the main shaft body 41 is connected to the swing arm assembly 30.
Specifically, an extension arm 411 is disposed at an end of the main shaft 41 facing away from the main circuit device 1, the extension arm is disposed in the inner accommodating space of the stand 10, one end of the connecting arm 42 is hinged to the extension arm 411, and the other end is connected to a lower end of the swing arm 32. When the swing arm assembly 30 rotates, the rotating shaft main body 41 is rotated by the connecting arm 42.
Further, the switching operation device 2 further includes a pressure spring assembly 60 connected between the bracket 10 and the swing arm assembly 30; the extension and contraction direction of the pressure spring assembly 60 is parallel to the extension and contraction direction of the first electromagnetic assembly 20, and the first electromagnetic assembly 20 and the main circuit device 1 are provided with driving force together.
The compression spring assembly 60 may include a shaft 61, a stem 62, a first compression spring 63, and a second compression spring 64. One end of the shaft lever 61 is connected to the bracket 10, one end of the loop bar 62 is sleeved on the other end of the shaft lever 61, and the other end of the loop bar 62 is connected to the swing arm assembly 30; the first compression spring 63 is arranged in the sleeve rod 62 and abuts between the shaft rod 61 and the swing arm assembly 30, and the second compression spring 64 is sleeved on the outer peripheries of the sleeve rod 62 and the shaft rod 61 and abuts between the support 10 and the swing arm assembly 30.
In this embodiment, on the bracket 10, the pressure spring assembly 60 is located below the first electromagnetic assembly 20, one end of the loop bar 62 is sleeved on one end of the shaft bar 61, and the other end is connected to the lower end of the swing arm 32.
Referring to fig. 4 and 6, after the first electromagnetic assembly 20 is powered on, the movable iron core retracts to drive the swing arm assembly 30 to rotate clockwise, so as to drive the shaft portion 301 to slide into the locking position 501 of the locking arm assembly 50, and the compressed spring assembly 60 compresses and stores energy.
Further, as shown in fig. 3 and 4, the switching operation device 2 further includes a second electromagnetic assembly 70 mounted on the support 10; second solenoid assembly 70 is coupled to latch arm assembly 50 to actuate the rotation of latch arm assembly 50. When the second electromagnetic assembly 70 is energized, the locking arm assembly 50 is rotated, and the locking portion 501 of the locking arm assembly 50 is disengaged from the shaft portion 301 of the swing arm assembly 30.
In this embodiment, the first solenoid assembly 20 is mounted on the support 10 in a lateral direction with respect to the support 10, and the second solenoid assembly 70 is mounted on the support 10 in a perpendicular direction with respect to the first solenoid assembly 20. Corresponding to the second electromagnetic assembly 70, the locking arm assembly 50 further includes a pressing rod 53 connected to the locking rod 51 and capable of rotating along with the locking rod 51, one end of the pressing rod 53 is inserted through the locking rod 51, the other end of the pressing rod 53 horizontally extends relative to the locking rod 51, and a protruding shaft 54 is arranged on the pressing rod and inserted on the movable iron core of the second electromagnetic assembly 70, so that the linkage connection between the two is realized.
Specifically, the second electromagnetic assembly 70 is located on a side of the lock lever 51 close to the swing arm assembly 30, and the pressing rod 53 extends on the lock lever 51 toward the swing arm assembly 30 and is connected to the second electromagnetic assembly 70 through the protruding shaft 54. Referring to fig. 4 and 7, when the second electromagnetic assembly 70 is powered, the movable iron core thereof retracts to drive the locking arm assembly 50 to rotate clockwise, so as to drive the shaft portion 301 of the swing arm assembly 30 to slide out of the locking position 501 of the locking arm assembly 50, instantly release the energy stored in the compressed spring assembly 60, and drive the rotating shaft assembly 40 to rotate by reversely pushing the swing arm assembly 30 to rotate.
Thus, the first solenoid assembly 20 is a latching solenoid assembly and the second solenoid assembly 70 is a tripping solenoid assembly.
As shown in fig. 3 and 4, the switching operation device 2 further includes a first microswitch 81 electrically connected to the first solenoid assembly 20 and a second microswitch 82 electrically connected to the second solenoid assembly 70. The switching of the first microswitch 81 controls the energisation and de-energisation of the first solenoid assembly 20 and the switching of the second microswitch 82 controls the energisation and de-energisation of the second solenoid assembly 70.
A first microswitch 81 and a second microswitch 82 are mounted on the stand 10 adjacent the locking arm assembly 50. Specifically, the first microswitch 81 and the second microswitch 82 are arranged below the locking arm assembly 50 corresponding to the pressing rod 53, and the pressing rod 53 can press and trigger the first microswitch 81 and the second microswitch 82 after rotating in place, so that the electrical interlocking function of the first electromagnetic assembly 20 and the second electromagnetic assembly 70 is realized. After the pressing lever 53 is rotated reversely, the pressing lever 53 can be separated from the first microswitch 81 and the second microswitch 82.
Further, referring to fig. 2, a side of the stand 10 facing the main circuit device 1 is provided with a normal power supply in-place microswitch 83 and a standby power supply in-place microswitch 84. The common power supply in-place microswitch 83 and the standby power supply in-place microswitch 84 are positioned at two sides of the rotating shaft main body 41, the rotating shaft main body 41 is provided with a first pressing piece 43 and a second pressing piece 44 which extend outwards, and the first pressing piece 43 and the second pressing piece 44 can be separated along with the rotation of the rotating shaft main body 41 to press the common power supply in-place microswitch 83 and the standby power supply in-place microswitch 84. After the rotating shaft assembly 40 rotates clockwise or counterclockwise, the common power supply in-place micro switch 83 or the standby power supply in-place micro switch 84 is triggered through the first pressing piece 43 or the second pressing piece 44, and a feedback signal of the rotation in place is given.
In addition, the conversion operating device 2 further includes a circuit board assembly 90, which is mountable on the bracket 10. The first electromagnetic assembly 20, the second electromagnetic assembly 70, the first microswitch 81, the second microswitch 82, the common power supply in-place microswitch 83 and the standby power supply in-place microswitch 84 are all electrically connected with the circuit board assembly 90.
As shown in fig. 1 and 11, in the present embodiment, the top of the support frame 10 is open, so the switching operation device 2 further includes a cover 100 covering the support frame 10 and covering the first electromagnetic assembly 20, the swing arm assembly 30, the rotating shaft assembly 40, and the lock arm assembly 50.
The face mask 100 is provided with a button assembly 110 that releasably presses against the locking arm assembly 50 to actuate the rotation of the locking arm assembly 50. The button assembly 110 may include a button 111 disposed on the mask 100, a conical spring 112 disposed in the frame 10 and sleeved on the button 111, and a snap ring 113; the mask 100 is provided with a through hole 101 in which a button assembly 110 is disposed. Button assembly 110 is positioned above latch arm assembly 50 and conical spring 112 is positioned in abutting relation between button 111 and plunger 53 of latch arm assembly 50. Manual rotation of locking arm assembly 50 is effected by depressing button assembly 110.
Referring to fig. 2 and 8, main circuit device 1 includes a plurality of sequentially stacked monopole elements 120. The single pole assembly 120 includes a housing 121, a movable contact assembly 122 rotatably disposed in the housing 121, a first fixed contact assembly 123 and a second fixed contact assembly 124 disposed in the housing 121 and located at the periphery of the movable contact assembly 122, and an arc extinguishing chamber 125 disposed in the housing 121.
The opening of the arc extinguishing chamber 125 faces the movable contact assembly 122, and the first fixed contact assembly 123 and the second fixed contact assembly 124 are positioned at two ends of the opening of the arc extinguishing chamber 125; the contact end of the movable contact assembly 122 extends into the arc extinguish chamber 125 through the opening, and can rotate back and forth to be respectively in contact with the first fixed contact assembly 123 and the second fixed contact assembly 124. The switching-on and switching-off actions of the movable contact assembly 122 and the first and second fixed contact assemblies 123 and 124 are completed in the arc extinguish chamber 125, and the arc is extinguished by the arc extinguish chamber 125.
The two opposite sides of the moving contact assembly 122 facing and facing away from the adjacent single pole assembly 120 are respectively provided with a concave-convex structure, and the moving contact assemblies 122 on the two adjacent single pole assemblies 120 are connected in a linkage manner by matching the concave-convex structures. When one movable contact assembly 122 is forced to rotate, the movable contact assembly 122 which is in linkage connection with the movable contact assembly is driven to rotate simultaneously.
As shown in fig. 8 and 9, the relief structure may alternatively include mating non-circular grooves 126 and non-circular cams 127. In the two stacked single pole assemblies 120, the cam 127 or the groove 126 of the movable contact assembly 122 in one single pole assembly 120 is matched with the groove 126 or the cam 127 of the movable contact assembly 122 in the other adjacent single pole assembly 120. The cam 127 and the recess 126 are shaped in a manner such that in mating engagement, the cam 127 engages the recess 126 to form an engagement structure.
The moving contact assembly 122 may include a cylindrical shaft sleeve, a moving contact penetrating the shaft sleeve and having two ends respectively extending out of two opposite sides of the shaft sleeve; the concave-convex structure is arranged on the two opposite side surfaces of the shaft sleeve. One end (contact end) of the movable contact assembly 122 faces the arc extinguishing chamber 125 and is rotatable back and forth between the first stationary contact assembly 123 and the second stationary contact assembly 124, and the other end of the movable contact assembly 122 is connected to a connection terminal through a wire.
The moving contact assembly 122 is of a clamping type double-pole double-throw structure, and a unidirectional motion opening and closing mode can ensure that the contact conversion time is short.
The shape of the recess 126 and cam 127 may be, but is not limited to, a centrosymmetric shape such as a rice-shape, a cross-shape, a hexagon or a pentagon.
The moving contact assembly 122 of the single pole assembly 120 located on the side of the main circuit device 1 facing the switching operation device 2 (i.e., the one single pole assembly 120 closest to the switching operation device 2) is also coupled to the rotating shaft assembly 40 by means of the concave-convex structure thereon.
Specifically, the surface of the rotating shaft main body 41 of the rotating shaft assembly 40 facing the monopole assembly 120 is provided with a connecting portion 412 to be fitted with the concave-convex structure. The connecting portion 412 is a non-circular cam or a non-circular groove corresponding to the concave-convex structure, and may have a shape of, but not limited to, a centrosymmetric shape such as a cross, a hexagon, a pentagram, or the like.
As shown in fig. 2 and 10, when the plurality of single-pole assemblies 120 are stacked in sequence, the movable contact assemblies 122 of the plurality of single-pole assemblies 120 are connected together in cooperation through the groove 126 and the cam 127 in sequence. For the movable contact assemblies 122 facing the rotating shaft assembly 40 through the cams 127, the connecting portion 412 on the rotating shaft body 41 is correspondingly a groove and is matched with the cam 127 of the closest movable contact assembly 122, so that the rotating shaft assembly 40 and the plurality of movable contact assemblies 122 are sequentially connected in an interlocking manner. When the rotating shaft assembly 40 rotates, the plurality of moving contact assemblies 122 are driven to rotate simultaneously, so that the moving contact assemblies 122 are communicated with the first fixed contact assembly 123 or the second fixed contact assembly 124, and the switching on of a common power supply or the switching on of a standby power supply is realized.
Further, as shown in fig. 2, the two-phase automatic transfer switching apparatus of the present invention further includes at least one connection fastening member 3. The connection fastening unit 3 is inserted between the main circuit device 1 and the switching operation device 2, and connects the main circuit device 1 and the switching operation device 2. The connection fastening assembly 3 may comprise a screw having a sufficient length to pass through the main circuit device 1 into the switching operation device 2.
In the main loop device 1, the housing 121 of each single-pole assembly 120 can be further provided with mutually-matched fasteners, so that the single-pole assemblies 120 are preliminarily connected, and the fastening assemblies 3 are connected together in a penetrating and fixed manner.
When the two-stage automatic transfer switching device works:
in the automatic operation, the first electromagnetic assembly 20 and the pressure spring assembly 60 provide a driving force to rotate the swing arm assembly 30, thereby rotating the rotary shaft assembly 40. When the first solenoid assembly 20 is in place, the catch 501 of the locking arm assembly 50 catches the shaft portion 301 of the swing arm assembly 30. When the second electromagnetic assembly 70 is powered on, the locking arm assembly 50 rotates under the action of electromagnetic force, under the action of the pressure spring force of the pressure spring assembly 60, the shaft portion 301 on the swing arm assembly 30 is driven to slide out of the locking position 501, the stored energy is compressed when the first electromagnetic assembly 20 is powered on by instantly releasing the pressure spring assembly 60, and the rotating shaft assembly 40 rotates by reversely pushing the swing arm assembly 30 to rotate. In the process, the pressing rod 53 on the locking arm assembly 50 presses or releases the first microswitch 81 or the second microswitch 82, so as to realize the electric interlocking function of the first electromagnetic assembly 20 and the second electromagnetic assembly 70. The driving force generated by the switching operation device 2 is transmitted to the movable contact assembly 122 in the main circuit device 1, and the opening and closing of the movable contact assembly 122 are realized.
In the case of manual operation, the button assembly 110 on the face mask 100 is pressed, and the button assembly 110 presses the pressing rod 53 on the locking arm assembly 50 to rotate, so as to drive the shaft portion 301 on the swing arm assembly 30 to slide out of the locking position 501 on the locking arm assembly 50, thereby instantly releasing the energy stored in the compressed spring assembly 60, and realizing that the switching operation device 2 drives the movable contact assembly 122 on the main circuit device 1 to switch from the standby power supply switching-on state to the normal power supply switching-on state.
If the switching-on state of the conventional power supply needs to be manually converted into the switching-on state of the standby power supply, a handle or other operating tools can be inserted into a hole in the swing rod 31 of the swing arm assembly 30, the shaft portion 301 on the swing arm assembly 30 can slide into the locking position 501 on the locking arm assembly 50 by clockwise rotation, and meanwhile, the compressed spring assembly 60 is compressed to store energy for converting the switching-on state of the standby power supply into the switching-on state of the conventional power supply.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A two-stage position automatic transfer switching device is characterized by comprising a main loop device (1) and a transfer operation device (2) for providing driving force for the main loop device (1); the conversion operation device (2) is arranged on one side of the main loop device (1) and is in linkage connection with the main loop device (1);
the conversion operation device (2) comprises a support (10), a first electromagnetic assembly (20) arranged on the support (10), a swing arm assembly (30) rotatably arranged on the support (10), a rotating shaft assembly (40) arranged on the support (10) and connected with the swing arm assembly (30) in a linkage manner, a locking arm assembly (50) arranged on the support (10) and a pressure spring assembly (60) connected between the support (10) and the swing arm assembly (30); the first electromagnetic assembly (20) and the pressure spring assembly (60) are connected with the swing arm assembly (30) and drive the swing arm assembly (30) to rotate back and forth;
the pressure spring assembly (60) comprises a shaft rod (61), a sleeve rod (62), a first pressure spring (63) and a second pressure spring (64);
one end of the shaft lever (61) is connected to the support (10), one end of the sleeve lever (62) is sleeved on the other end of the shaft lever (61), and the other end of the sleeve lever (62) is connected with the swing arm assembly (30); the first pressure spring (63) is arranged in the sleeve rod (62) and abutted between the shaft rod (61) and the swing arm assembly (30), and the second pressure spring (64) is sleeved on the peripheries of the sleeve rod (62) and the shaft rod (61) and abutted between the bracket (10) and the swing arm assembly (30);
a lock catch position (501) is arranged on the lock arm assembly (50), and the swing arm assembly (30) is provided with a shaft part (301) matched with the lock catch position (501); when the swing arm assembly (30) rotates towards one direction, the rotating shaft assembly (40) is driven to rotate, and meanwhile, the shaft part (301) slides into the locking position (501); when the swing arm assembly (30) rotates in the opposite direction, the rotating shaft assembly (40) is driven to rotate in the opposite direction, and meanwhile, the shaft portion (301) slides out of the locking position (501).
2. The two-phase automatic transfer switching apparatus according to claim 1, wherein the transfer operating means (2) further comprises a second electromagnetic assembly (70) mounted on the bracket (10); the second electromagnetic component (70) is connected with the locking arm component (50) and drives the locking arm component (50) to rotate back and forth;
when the second electromagnetic assembly (70) is electrified, the locking arm assembly (50) is driven to rotate, and the locking position (501) of the locking arm assembly (50) is driven to be separated from the shaft part (301) of the swing arm assembly (30).
3. The two-phase automatic transfer switching apparatus according to claim 2, wherein the lock arm assembly (50) and the swing arm assembly (30) are oppositely disposed;
the swing arm assembly (30) comprises a swing rod (31) which is rotatably arranged on the bracket (10) in a penetrating way and a swing arm (32) which is connected to the swing rod (31) and can rotate along with the swing rod (31); the shaft part (301) is arranged at the upper end of the swing arm (32), and the first electromagnetic assembly (20) is connected with the lower end of the swing arm (32);
the locking arm assembly (50) comprises a locking rod (51) which is rotatably arranged on the bracket (10) in a penetrating way, and a locking arm (52) which is connected to the locking rod (51) and can rotate along with the locking rod (51); the locking position (501) is arranged on the locking arm (52).
4. The two-phase automatic transfer switching apparatus according to claim 3, wherein the transfer operation device (2) further comprises a first micro switch (81) electrically connected to the first electromagnetic assembly (20), a second micro switch (82) electrically connected to the second electromagnetic assembly (70), the first micro switch (81) and the second micro switch (82) being mounted on the bracket (10) adjacent to the locking arm assembly (50);
the locking arm assembly (50) further comprises a pressing rod (53) which is connected to the locking rod (51) and can rotate along with the locking rod (51), and the pressing rod (53) can be separated along with the rotation of the locking rod (51) to press the first microswitch (81) and the second microswitch (82).
5. The two-stage automatic transfer switching apparatus according to claim 1, wherein the rotary shaft assembly (40) comprises a rotary shaft main body (41) rotatably mounted on the bracket (10) and protruding from one side of the bracket (10) facing the main circuit device (1), and a connecting arm (42) hinged to the rotary shaft main body (41); one end, far away from the rotating shaft main body (41), of the connecting arm (42) is connected with the swing arm assembly (30).
6. The two-stage automatic transfer switching device according to claim 5, wherein a common power supply to-place microswitch (83) and a standby power supply to-place microswitch (84) are arranged on one side surface of the bracket (10) facing the main loop device (1); the common power supply in-place microswitch (83) and the standby power supply in-place microswitch (84) are positioned at two sides of the rotating shaft main body (41), a first pressing piece (43) and a second pressing piece (44) which extend outwards are arranged on the rotating shaft main body (41), and the first pressing piece (43) and the second pressing piece (44) can separately press the common power supply in-place microswitch (83) and the standby power supply in-place microswitch (84) along with the rotation of the rotating shaft main body (41).
7. The two-phase automatic transfer switching apparatus according to any one of claims 1 to 6, wherein the transfer operation device (2) further comprises a cover (100) covering the bracket (10) and covering the first electromagnetic assembly (20), the swing arm assembly (30), the rotating shaft assembly (40) and the lock arm assembly (50); the face shield (100) is provided with a button assembly (110) which can be detachably pressed against the locking arm assembly (50) to drive the locking arm assembly (50) to rotate.
8. The two-phase automatic transfer switching apparatus according to any of claims 1 to 6, wherein the main circuit means (1) comprises a plurality of single pole assemblies (120) stacked in sequence; the single-pole assembly (120) comprises a shell (121), a movable contact assembly (122) rotatably arranged in the shell (121), a first fixed contact assembly (123) and a second fixed contact assembly (124) which are arranged in the shell (121) and positioned at the periphery of the movable contact assembly (122), and an arc extinguishing chamber (125) arranged in the shell (121);
the two opposite sides of the moving contact component (122) are respectively provided with a concave-convex structure which is matched with each other, and the moving contact components (122) on the two adjacent single-pole components (120) are matched and linked through the concave-convex structures;
the moving contact assembly (122) of the single-pole assembly (120) positioned on one side of the main circuit device (1) facing the switching operation device (2) is in linkage connection with the rotating shaft assembly (40) through a concave-convex structure on the moving contact assembly;
the opening of the arc extinguish chamber (125) faces the movable contact assembly (122), and the first fixed contact assembly (123) and the second fixed contact assembly (124) are positioned at two ends of the opening; the contact end of the movable contact component (122) extends into the arc extinguish chamber (125) through the opening and can rotate back and forth to be respectively in contact conduction with the first fixed contact component (123) and the second fixed contact component (124).
9. The two-phase automatic transfer switching apparatus according to any of claims 1 to 6, further comprising at least one connection fastening assembly (3); the connecting and fastening component (3) is arranged between the main loop device (1) and the conversion operation device (2) in a penetrating mode and connects the main loop device (1) and the conversion operation device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570635.3A CN108878185B (en) | 2018-06-05 | 2018-06-05 | Two-stage automatic change-over switch electric appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810570635.3A CN108878185B (en) | 2018-06-05 | 2018-06-05 | Two-stage automatic change-over switch electric appliance |
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| Publication Number | Publication Date |
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| CN108878185A CN108878185A (en) | 2018-11-23 |
| CN108878185B true CN108878185B (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810570635.3A Active CN108878185B (en) | 2018-06-05 | 2018-06-05 | Two-stage automatic change-over switch electric appliance |
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| CN111739745B (en) * | 2020-06-03 | 2022-11-11 | 深圳市泰永电气科技有限公司 | Switching device and switching device self-locking device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441945B (en) * | 2007-11-23 | 2011-08-24 | 浙江德力西电器股份有限公司 | Self-locking apparatus for automatic transfer switch |
| CN203013555U (en) * | 2012-11-23 | 2013-06-19 | 深圳市泰永电气科技有限公司 | Drive device of opening and closing device |
| CN103441008B (en) * | 2013-08-27 | 2016-02-03 | 贵州泰永长征技术股份有限公司 | The moment transformational structure in parallel of automatic change-over |
| CN104332334A (en) * | 2014-10-30 | 2015-02-04 | 贵州长征开关制造有限公司 | Novel self-locking driving structure of single rotating shaft of double-fragment automatic change-over switching device |
| CN105470017B (en) * | 2016-01-11 | 2017-07-18 | 贵州泰永长征技术股份有限公司 | A kind of switching mechanism of the High-Speed Automatic transfer switching equipment of dual power supply |
| CN106504918B (en) * | 2017-01-04 | 2018-12-21 | 柏法瑞电气（厦门）有限公司 | A kind of change-over switch |
| CN106653422B (en) * | 2017-01-04 | 2018-12-21 | 柏法瑞电气（厦门）有限公司 | A kind of reversing arrangement applied to change-over switch |
| CN107731580B (en) * | 2017-09-22 | 2020-04-28 | 深圳市泰永电气科技有限公司 | Automatic change-over switch electrical apparatus and contact assembly thereof |
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