CN210200590U

CN210200590U - Dual-power switching mechanism and switch equipment with same

Info

Publication number: CN210200590U
Application number: CN201921360323.6U
Authority: CN
Inventors: Hao Liu; 刘浩; Bing Li; 李兵; Zheng Xing; 邢政; Jianbo Zuo; 左鉴波
Original assignee: Shaanxi Mingtuo Electromechanical Technology Co Ltd
Current assignee: Shaanxi Mingtuo Electromechanical Technology Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-03-27
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a dual power switching mechanism and have switchgear of this dual power switching mechanism, include: the common power switch is a vacuum tube switch; the standby power switch is a vacuum tube switch; the driving mechanism comprises a first driving part and a second driving part, and the first driving part drives the common power switch to be switched on or switched off through a lever structure; the second driving part drives the standby power switch to be powered on or powered off through a lever structure; the lever structure is characterized in that the moment arm of the lever structure on one side of the driving mechanism is larger than the moment arm of the lever structure on one side of the common power switch or the standby power switch. The problem that the switching speed between a common power switch and a standby power switch of a dual-power transfer switch in the prior art is low, and the switching-off and the switching-on of a switch contact cannot be completed within 20ms is solved.

Description

Dual-power switching mechanism and switch equipment with same

Technical Field

The utility model relates to a power transfer switch technical field, concretely relates to dual power transfer mechanism and have this dual power transfer mechanism's switchgear.

Background

At present, a double-power switching mechanism on the market has two modes of electromagnetism and an electromotor for driving a moving contact; the switch moving contact position keeps electromagnetic force and spring force.

The double-power-supply switching mechanism is a main body part provided with a double-power-supply switching switch, and the double-power-supply switching mechanism is provided with two groups of fixed contacts which are respectively connected with a common power supply and a standby power supply, and a group of moving contacts or two groups of moving contacts which are connected with the fixed contacts together to form an output end.

In the prior art, air arc extinguishing contacts are used in all forms of double power supply switching mechanisms; the electric arc generated when the moving contact and the static contact are separated can be extinguished within 10ms under the air condition; the utility model discloses the people thinks that adopt vacuum contact to accomplish the disconnection and the closure of switch contact, nevertheless because vacuum contact accomplishes the switch disconnection and the required drive power of closure is great, current actuating mechanism can't drive vacuum contact and accomplish switch disconnection and closed action. In addition, the existing dual power transfer switch cannot complete the opening and closing of the switch contacts within 20 ms.

Disclosure of Invention

Therefore, the utility model aims at providing a dual power transfer mechanism and have this dual power transfer mechanism's change over switch to switching speed is slow between its switch commonly used of dual power transfer switch among the solution prior art and the stand-by power switch, can't accomplish switch contact's disconnection and closed problem in 20 ms. Therefore, the utility model provides a dual power supply switching mechanism, include:

a dual power transfer mechanism, comprising:

the common power switch is a vacuum tube switch;

the standby power switch is a vacuum tube switch;

the permanent magnet driving mechanism comprises a first driving part and a second driving part, and the first driving part drives the common power switch to be switched on or switched off through a lever structure; the second driving part drives the standby power switch to be powered on or powered off through a lever structure; the lever structure is characterized in that the moment arm of the lever structure on one side of the permanent magnet driving mechanism is larger than the moment arm of the lever structure on one side of the common power switch or the standby power switch.

The common power switch comprises a first fixed contact and a first moving contact in transmission connection with the lever structure.

The standby power switch comprises a second fixed contact and a second moving contact in transmission connection with the lever structure.

The lever structure includes: the permanent magnet driving mechanism is arranged on the support part, the driving arm is rotatably arranged on the support part, the driving arm is of an L-shaped structure, one end of the driving arm rotates under the driving of the permanent magnet driving mechanism, and the other end of the driving arm is in transmission connection with the first moving contact or the second moving contact.

The driving arm is provided with a connecting rod which is rotationally connected with the driving arm, and the connecting rod drives the first moving contact or the second moving contact to move along a straight line, so that the common power switch or the standby power switch is switched on and off.

The lever structure includes: the permanent magnet driving mechanism is arranged on the support part, the support part and the driving arm are rotatably arranged on the support part, the driving arm is linearly arranged, one end of the driving arm is driven by the permanent magnet driving mechanism to rotate, and the other end of the driving arm is in transmission connection with the first moving contact or the second moving contact.

The permanent magnet driving mechanism comprises a closing coil and a closing iron core which are oppositely arranged to enable a power supply to be electrified, a separating coil and a separating iron core which are oppositely arranged to enable the power supply to be powered off, and armatures which are arranged on the driving arm and correspond to the closing iron core and the separating iron core;

the permanent magnet driving mechanism also comprises a permanent magnet, and the permanent magnet enables the armature and the closing iron core to be in a joint state so as to electrify the common power switch or the standby power switch; or the permanent magnet enables the armature and the closing iron core to keep a separated state, so that the common power switch or the standby power switch is powered off.

The permanent magnet driving mechanism further comprises: and the biasing member applies a biasing force to the driving arm to enable the driving arm to move away from the closing iron core so as to overcome the attraction force of the permanent magnet to enable the armature to move away from the closing iron core.

The biasing member is a spring.

A power supply source is provided, and the double power supply switching mechanism is provided.

The technical scheme of the utility model, have following advantage:

1. the utility model provides a dual power supply switching mechanism, include: the common power switch is a vacuum tube switch; the standby power switch is a vacuum tube switch; the permanent magnet driving mechanism comprises a first driving part and a second driving part, and the first driving part drives the common power switch to be switched on or switched off through a lever structure; the second driving part drives the standby power switch to be powered on or powered off through a lever structure; the lever structure is characterized in that the moment arm of the lever structure on one side of the permanent magnet driving mechanism is larger than the moment arm of the lever structure on one side of the common power switch or the standby power switch. When the first driving part is under the traction of permanent magnet driving, the lever structure can be driven to rotate, the lever structure is arranged in a mode that the force arm at one side of the permanent magnet driving mechanism is larger than the force arm at one side of the common power switch or the standby power switch, the common power switch can be driven to be powered on and powered off under the action of permanent magnet driving force through a lever principle, and the second driving part can be driven to rotate under the traction of permanent magnet driving to drive the common power switch to be powered on and powered off under the action of the permanent magnet driving force; the moving contact and the static contact are arranged in the vacuum tube, so that electric arcs generated when the moving contact and the static contact are separated can be extinguished within less than 10 ms; however, because the required drive power of moving contact, the separation of static contact is great in the vacuum tube, thereby be difficult to provide great power among the prior art and drive the separation of moving contact, static contact in the vacuum tube, and the utility model discloses well first drive division and second drive division can drive lever structure under permanent magnetism driven pulls, utilizes lever principle under the effect of electromagnetic drive power, and the circular telegram and the outage that drive switch and stand-by power switch commonly used with less power can solve the technical defect that dual supply changeover mechanism automatic transfer switch among the prior art can't satisfy the conversion action time that is less than 20 ms.

2. The utility model provides a double power transfer mechanism, the common power switch comprises a first static contact and a first moving contact which is in transmission connection with the lever structure; the standby power switch comprises a second fixed contact and a second moving contact in transmission connection with the lever structure. Because the common power switch and the moving contact and the static contact of the standby power switch are arranged in the vacuum tube, the vacuum switch can enable the electric arc generated when the moving contact and the static contact are separated to be extinguished within less than 10ms, therefore, the moving contact which drives the common power switch and the standby power switch by utilizing the permanent magnet driving device to drive the lever structure with smaller force can simply and quickly realize the on-off of the power supplies of the common power switch and the standby power switch, thereby realizing the rapid on-off of the automatic transfer switch of the dual power transfer mechanism, and solving the defect that the automatic transfer on-off time of the dual power transfer mechanism in the prior art can not be less than 20 ms.

3. The utility model provides a dual supply shifter, lever structure includes: the permanent magnet driving mechanism is arranged on the support part, the driving arm is rotatably arranged on the support part, the driving arm is of an L-shaped structure, one end of the driving arm rotates under the driving of the permanent magnet driving mechanism, and the other end of the driving arm is in transmission connection with the first moving contact or the second moving contact. The driving arm arranged on the side of the common power supply on the supporting part is rotated, so that electromagnetic driving force can be converted into acting force for switching on and off the first moving contact or the second moving contact, one of the common power supply switch and the standby power supply switch is simply and reliably powered on, in addition, the driving arm is of an L-shaped structure, the permanent magnet driving structure is mainly concentrated at the middle position, space is reserved on two sides of the driving arm of the L-shaped structure, the size of the double-power-supply switching mechanism is reduced, and the double-power-supply switching mechanism can adapt to different space layout requirements and adapt to different types of power supply assembly requirements.

4. The utility model provides a dual supply shifter, lever structure includes: the permanent magnet driving mechanism is arranged on the support part, one end of the driving arm rotates under the driving of the permanent magnet driving mechanism, and the other end of the driving arm is in transmission connection with the first moving contact or the second moving contact. The driving arm on the side of the common power supply or the standby power supply is arranged on the supporting part in a rotating mode, so that electromagnetic driving force can be converted into acting force for switching on and off the first moving contact or the second moving contact, one of the common power supply switch and the standby power supply switch is simply and reliably powered on, in addition, the driving arm is of a linear structure, the permanent magnet driving structure mainly concentrates the side of the driving arm, and therefore a certain space is reserved between the first driving part and the second driving part, and the assembling requirements of different types of power supply power supplies are met.

5. The utility model provides a dual power supply changeover mechanism, be provided with the connecting rod rather than rotating and linking to each other on the actuating arm, the connecting rod drive first moving contact or linear motion is followed to the second moving contact, realizes switch commonly used or stand-by power switch switches on and off. The driving arm at the side of the common power supply pushes the first moving contact to be communicated or disconnected with the first fixed contact through the connecting rod which is rotationally connected with the driving arm; the driving arm at the standby power supply side pushes the second moving contact to be communicated with or disconnected from the second fixed contact through a connecting rod rotationally connected with the driving arm; the connecting rod rotationally connected with the driving arm at the side of the common power supply and the connecting rod rotationally connected with the driving arm at the side of the standby power supply can drive the first moving contact and the second moving contact to move along a straight line, so that the first moving contact accurately moves towards the first fixed contact to be communicated with or disconnected from the first fixed contact, the second moving contact accurately moves towards the second fixed contact to be communicated with or disconnected from the second fixed contact, and the problem of position deviation caused by butt joint of the first moving contact and the first fixed contact or the second moving contact and the second fixed contact is solved.

6. The utility model provides a dual power supply changeover mechanism, actuating mechanism is permanent magnetism actuating mechanism, and permanent magnetism actuating mechanism has the fast advantage of reaction rate, adopts permanent magnetism actuating mechanism control switch commonly used and stand-by power switch, can further improve its switching speed of dual power supply changeover mechanism automatic transfer switch.

7. The utility model provides a dual power supply conversion mechanism, permanent magnet driving mechanism include relative setting in order to make the switching-on coil and the combined floodgate iron core of power on, relative setting in order to make the separating brake coil and the separating brake iron core of power outage to and set up on the actuating arm and with combined floodgate iron core and the armature that the separating brake iron core corresponds the setting; the permanent magnet driving mechanism also comprises a permanent magnet, and the permanent magnet enables the armature and the closing iron core to be in a joint state, so that the common power switch or the standby power switch is electrified; or the permanent magnet enables the armature and the closing iron core to keep a separated state, and the common power switch or the standby power switch is powered off. The permanent magnet driving mechanism with the structure can simply and reliably realize the conversion action between the common power supply and the standby power supply by the PC-level or CB-level double-power-supply conversion mechanism.

8. The utility model provides a dual power supply changeover mechanism, permanent magnet actuating mechanism still includes: and the biasing member applies a biasing force to the driving arm to enable the driving arm to move away from the closing iron core so as to overcome the attraction force of the permanent magnet to enable the armature to move away from the closing iron core. The bias member is a component for applying bias force to the driving arm to enable the driving arm to move away from the closing iron core, the bias member is an elastic component such as a spring or rubber, for example, when the standby power supply is switched on and off, a closing coil is electrified to generate electromagnetic force, the closing iron core attracts the armature to overcome the elastic force of the bias member to move towards the closing iron core, the driving arm fixedly linked with the armature pushes a connecting rod rotationally connected with the driving arm to drive the second moving contact to move through the lever principle, and the standby power supply is switched on and off.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a dual power switching mechanism according to a first embodiment of the present invention, in which only a common power switch is in a power-on state and a standby power is in a power-off position;

fig. 2 is a schematic view of a dual power switching mechanism according to a first embodiment of the present invention, in which only the standby power switch is in the power-on state and the common power source is in the power-off position;

fig. 3 is a schematic view of the working state of the power switching mechanism in which the common power switch and the standby power switch are simultaneously in the power-off position according to the first embodiment of the present invention;

fig. 4 is a schematic view of an operating state of a power switching mechanism according to a second embodiment of the present invention, in which a common power switch is turned off and a standby power switch is turned on;

fig. 5 is a schematic view of the working state of the power switching mechanism according to the third embodiment of the present invention, in which the power switch is turned on and the power switch is turned off;

fig. 6 is a schematic view of an operating state of a power switching mechanism according to a fourth embodiment of the present invention, in which a common power switch is turned on and a standby power switch is turned off;

fig. 7 is a schematic view of an operating state of a power switching mechanism according to a fifth embodiment of the present invention, in which a common power switch is turned on and a standby power switch is turned off;

description of reference numerals:

1-common power switch; 2-standby power switch; 3-a first drive section; 4-a second drive section; 5-a permanent magnet; 6-opening coil; 7-a closing coil; 8-opening the brake iron core; 9-a closing iron core; 10-a first moving contact; 11-a first stationary contact; 12-a second moving contact; 13-a second stationary contact; 14-a drive arm; 15-a first support; 17-a first link; 18-an armature; 19-a biasing member; 20-a movable iron core; 23-a magnetostatic body; 24-a first electromagnetic coil; 25-a second electromagnetic coil; 26-a linkage rod; 27-a support frame; 28-first connecting rod; 29-second support.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The dual power switching mechanism provided in this embodiment, as shown in fig. 1 to 3, includes:

the common power switch 1 is a vacuum tube switch; the common power switch 1 comprises a first fixed contact 11 and a first movable contact 10 in transmission connection with the lever structure;

the standby power switch 2 is a vacuum tube switch; the standby power switch 2 comprises a second fixed contact 13 and a second movable contact 12 in transmission connection with the lever structure.

The permanent magnet driving mechanism comprises a first driving part 3 and a second driving part 4, and the existing power supply change-over switches all use air arc extinguishing contacts, namely air contacts for short. The electric arc generated when the moving contact and the static contact are separated can be extinguished within 10ms under the air condition; in order to ensure that two asynchronous power supplies, namely a common power supply and a standby power supply, are not conducted together through the arc of the air arc-extinguishing contact, at least 20ms of travel time is reserved for the existing movable contact. Therefore, the existing dual power transfer switch cannot complete the transfer within 20 ms. The vacuum tube switch is adopted to replace the existing air arc extinguishing contact, has the advantage of rapid arc extinguishing, and can complete the switching work of the common power supply and the standby power supply in a short time, thereby rapidly realizing the function of rapidly switching the output end and the common power supply and the standby power supply, and meeting the requirement that the switching action can be completed within 20ms between the common power supply and the standby power supply;

the driving mechanism comprises a first driving part 3 and a second driving part 4, wherein the first driving part 3 drives the common power switch 1 to be switched on or switched off through a lever structure; the second driving part 4 drives the standby power switch 2 to be switched on or switched off through a lever structure; the force arm of the lever structure on one side of the permanent magnet driving mechanism is larger than the force arm on one side of the common power switch 1 or the standby power switch 2. When first drive division 3 is under electromagnetic drive's traction, can drive lever structure and rotate, lever structure's the mode of setting up is that the arm of force of permanent magnetism drive mechanism one side is greater than and is located switch 1 commonly used or the arm of force of standby power switch 2 one side, can drive switch 1 commonly used's circular telegram and outage under the effect of electromagnetic drive power through lever principle, simultaneously reason when second drive division 4 under electromagnetic drive's traction, can drive lever structure and rotate, drive switch 1 commonly used's circular telegram and outage under the effect of electromagnetic drive power, above-mentioned first drive division 3 and second drive division 4 both independent operation, each other does not influence. Among the prior art, need great power to drive the closure of vacuum tube switch, be difficult to accomplish at present, and the utility model discloses in, through above-mentioned drive structure, utilize the effect of electromagnetic drive power down drive lever to control power commonly used or stand-by power supply vacuum tube disconnection and closure, can accomplish the work that power commonly used and stand-by power supply switched in the short time to can realize fast switch over's function between output and power commonly used and the stand-by power supply respectively fast, can be in 20ms between power commonly used and the stand-by power supply in order to satisfy.

The above-mentioned drive mechanism further includes: a lever structure, the lever structure comprising: the driving arm 14 is in an L-shaped structure, one end of the driving arm 14 rotates under the driving of the permanent magnetic driving mechanism, and the other end of the driving arm 14 is in transmission connection with the first moving contact 10 or the second moving contact 12. The driving arm 14 arranged on the supporting part 15 and on the side of the common power supply is rotated, so that electromagnetic driving force can be converted into acting force for switching on and off the first moving contact 10 or the second moving contact 12, one of the common power supply switch 1 and the standby power supply switch 2 is simply and reliably powered on, the permanent magnet driving structure can be mainly concentrated at the middle position due to the arrangement of the L-shaped structure, space is reserved for two sides of the driving arm 14 of the L-shaped structure, the size of the dual-power-supply switching mechanism is reduced, the dual-power-supply switching mechanism can adapt to different space layout requirements, and the assembling requirements of different types of power supply sources are met. The driving arm 14 is further provided with a first connecting rod 17 rotationally connected with the driving arm, and the first connecting rod 17 drives the first moving contact 10 or the second moving contact 12 to move along a straight line, so that the first moving contact 10 accurately moves towards the first fixed contact 11 to be communicated with or disconnected from the first fixed contact, and the second moving contact 12 accurately moves towards the second fixed contact 13 to be communicated with or disconnected from the second fixed contact, thereby avoiding the problem of position deviation caused by butt joint of the first moving contact 10 and the first fixed contact 11, or the second moving contact 12 and the second fixed contact 13. And the power on/off of the common power switch 1 or the standby power switch 2 is realized.

The permanent magnet driving mechanism comprises a closing coil 7 and a closing iron core 9 which are oppositely arranged to enable a power supply to be electrified, an opening coil 6 and an opening iron core 8 which are oppositely arranged to enable the power supply to be powered off, and an armature 18 which is arranged on the driving arm 14 and corresponds to the closing iron core 9 and the opening iron core 8, and the permanent magnet driving mechanism also comprises a permanent magnet 5, wherein the permanent magnet 5 enables the armature 18 and the closing iron core 9 to be kept in a fit state so as to enable the common power switch 1 or the standby power switch 2 to be electrified; or, the permanent magnet 5 keeps the armature 18 and the closing iron core 9 in a separated state, so that the common power switch 1 or the standby power switch 2 is powered off.

The permanent magnet driving mechanism further comprises: and a biasing member 19 for applying a biasing force to the driving arm 14 to move the driving arm away from the closing iron core 9, so as to overcome the attraction force of the permanent magnet 5 to move the armature 18 away from the biasing member 19 of the closing iron core 9. The biasing member 19 is a spring. The armature 18 is attracted by the closing iron core 9 to overcome the elastic force of the biasing part 19 and move towards the closing iron core 9, the driving arm 14 fixedly linked with the armature 18 pushes the first connecting rod 17 rotationally connected with the driving arm to drive the second moving contact 12 to move through the lever principle, and the closing and the electrifying of the standby power switch 2 can be realized.

The embodiment also provides a power supply source, and the double-power switching mechanism is described above.

Certainly this application does not do specific restriction to the form of dual power supply switching mechanism, in other embodiments, dual power supply switching mechanism can also be PC level automatic transfer switching apparatus, and PC level automatic transfer switching apparatus only has the power transfer function, does not have short circuit and overload protection function, and PC level automatic transfer switching apparatus front end must set up short-circuit protection electrical apparatus, for example: the fuse is used for ensuring the safety of the double-power switching mechanism.

The present embodiment provides a dual power switching mechanism including the following operating states: comprising the following operating states:

1. when the common power switch 1 is closed and the standby power switch 2 is open:

the armature 18 of the first driving part 3 is attracted with the closing iron core 9 and keeps a static state under the magnetic force action of the permanent magnet 5, and the armature 18 is fixedly attached to the driving arm 14, so that the driving arm 14 on the side of the common power switch 1 drives the first moving contact 10 to keep in contact connection with the first fixed contact 11, and the common power switch 1 keeps a closed state.

At this time, the armature 18 of the second driving unit 4 is away from the opening core 8, and the backup power switch 2 is in an off state. The magnetic force of the permanent magnet 5 on the side of the standby power switch 2 is not enough to overcome the elastic force of the biasing member 19, and the second moving contact 12 is kept at a position far away from the second fixed contact 13 under the action of the biasing member 19;

2. when CB level dual power switching mechanism, when the short circuit appears, switch 1 breaks commonly used, and switch 2 breaks down for stand-by power simultaneously:

the opening coil 6 of the first driving part 3 is electrified to generate magnetic flux, the magnetic flux of the permanent magnet 5 is weakened, electromagnetic force generated by the permanent magnet 5 is reduced, the electromagnetic force is smaller than the elastic force of the biasing member 19, the driving arm 14 on the side of the common power supply switch 1 moves anticlockwise towards the direction far away from the opening iron core 8 under the elastic force of the biasing member 19, the first moving contact 10 on the side of the common power supply switch 1 is driven to be far away from the first fixed contact 11, and the common power supply switch 1 is disconnected.

At this time, the opening coil 6 of the second driving part 4 is electrified to generate magnetic flux, the magnetic flux of the permanent magnet 5 is weakened, so that the electromagnetic force generated by the permanent magnet 5 is reduced, the electromagnetic force is smaller than the elastic force of the biasing member 19, the armature 18 and the driving arm 14 move clockwise in the direction away from the opening iron core 8, the elastic force of the biasing member 19 drives the driving arm 14 on the side of the standby power switch 2 to rotate, and the second movable contact 12 on the side of the standby power switch 2 is pulled to a position away from the second fixed contact 13 until the standby power switch 2 is disconnected.

3. When the common power switch 1 is switched from the closed state to the open state, and the standby power switch 2 is switched from the open state to the closed state:

the opening coil 6 of the first driving part 3 is electrified to generate magnetic flux, the opening iron core 8 generates electromagnetic force to overcome the elastic force of the biasing member 19, so that the armature 18 and the driving arm 14 rotate anticlockwise towards the direction far away from the opening iron core 8, and the first movable contact 10 of the common power supply 1 is pulled to the position far away from the first movable contact 10 through the first connecting rod 17 rotationally connected with the armature until the common power supply switch 1 is disconnected; the usual power switch 1 is kept in an off state by the elastic force of the biasing member 19;

then, the second driving part 4 acts as follows, the closing coil 7 is electrified to generate magnetic flux, the armature 18 is attracted by the electromagnetic force of the closing iron core 9 to overcome the elastic force of the biasing member 19, so that the armature 18 and the driving arm 14 fixedly connected with the armature 18 move counterclockwise in the direction close to the closing iron core 9, and the first connecting rod 17 rotatably connected with the driving arm 14 is pulled to drive the second movable contact 12 to move towards the second fixed contact 13 until the second movable contact 12 is connected with the second fixed contact 13 in a contacting manner. At this time, the magnetic flux of the permanent magnet 5 increases, and the magnetic force of the permanent magnet 5 becomes larger than the elastic force of the biasing member 19, so that the standby power switch 2 is kept in the energized state.

Example 2

As shown in fig. 4, the dual power conversion mechanism provided in this embodiment is different from embodiment 1 in that the dual power conversion mechanism includes a permanent magnet driving mechanism, and the permanent magnet driving mechanism includes a movable iron core 20, where the movable iron core 20 is connected to a linkage rod 26, and performs reciprocating motion between directions of a driving arm 14 close to or far from the common power supply side or a driving arm 14 close to the standby power supply side. The permanent magnet driving mechanism further comprises: the permanent magnet type power supply comprises a static iron core 23, a first electromagnetic coil 24 and a second electromagnetic coil 25 which are arranged on one side of a driving arm 14 close to the standby power supply side, and a permanent magnet 21 used for keeping the movable iron core 20 at the first electrified position or the power-off position or the second electrified position, wherein the static iron core 23 is provided with a permanent magnet 21 used for accommodating the movable iron core 20, the permanent magnet 21, the first electromagnetic coil 24 and the second electromagnetic coil 25, and the movable iron core 20 is driven to slide in the accommodating cavity. The permanent magnet 21 can effectively realize the permanent magnet retaining effect on the movable iron core 20, and the movable iron core 20 can effectively keep a static state under the magnetic force effect of the permanent magnet 21, so that the common power switch 1 and the standby power switch 2 are powered on or powered off;

when the normal power switch 1 is turned off and the standby power switch 2 is turned on:

the first electromagnetic coil 24 on the side of the common power switch 1 is electrified, under the action of magnetic force, the driving arm 14 on the side of the common power supply is driven by the movable iron core 20 to rotate anticlockwise towards the direction far away from the common permanent magnet driving mechanism, in the moving process, the first connecting rod 17 rotationally connected with the driving arm 14 on the side of the common power supply pushes the first movable contact 10 and the second fixed contact 13 to be connected in a contact mode, and the common power switch 1 is disconnected.

Then, the second electromagnetic coil 25 on the side of the standby power switch 2 is energized, under the action of magnetic force, the movable iron core 20 drives the driving arm 14 on the side of the standby power to rotate counterclockwise toward the direction close to the standby permanent magnet driving mechanism, in the moving process, the first connecting rod 17 rotationally connected with the driving arm 14 on the side of the standby power pushes the second movable contact 12 to be in contact connection with the second fixed contact 13, and the standby power switch 2 is closed and energized.

Similarly, when the standby power switch 2 is switched off and the normal power switch 1 is switched on, the working states are opposite.

Example 3

As shown in fig. 5, the dual power conversion mechanism provided in this embodiment is different from that of embodiment 1 in the spatial layout of the positions of the first driving portion 3 and the second driving portion 4, as shown in fig. 5, the dual power conversion mechanism includes a common power switch 1 and a standby power switch 2, the positions of which are opposite to each other in the vertical direction, and further includes a permanent magnet driving mechanism, the permanent magnet driving mechanism includes the first driving portion 3 and the second driving portion 4, and the first driving portion 3 is connected to the common power switch 1 through a lever structure; the second driving part 4 is connected with the standby power switch 2 through the lever structure driving; the lever structure is L-shaped and is bent towards the horizontal direction, the moment arm of the lever structure on one side of the permanent magnet driving mechanism is larger than that on one side of the common power switch 1 or the standby power switch 2, and the first driving part 3 and the second driving part 4 are arranged oppositely in the vertical direction. The advantage is that the device is suitable for layout requirements of different spaces.

Example 4

As shown in fig. 6, the dual power supply switching mechanism provided in this embodiment includes a common power supply switch 1 and a standby power supply switch 2, where the common power supply switch 1 and the standby power supply switch 2 are arranged in a horizontal direction, and further includes a permanent magnet driving mechanism, where the permanent magnet driving mechanism includes a first driving portion 3 and a second driving portion 4, and the first driving portion 3 is connected to the common power supply switch 1 through a lever structure; the second driving part 4 is connected with the standby power switch 2 through the lever structure driving; the lever structure is linear type for permanent magnetism drive structure mainly concentrates actuating arm one side, thereby makes and vacates certain space between first drive division 3 and the second drive division 4, and this actuating arm linear type design makes dual power supply switching mechanism can adapt to different space layout needs, adapts to the power supply assembly needs of different grade type.

Example 5

As shown in fig. 7, the dual power conversion mechanism provided in this embodiment is different from embodiment 1 in that, in the permanent magnet driving structure, a supporting frame 27 is disposed between the first driving portion 3 and the second driving portion 4, the first connecting rod 28 is connected to the supporting frame 27 through a second supporting portion 29, the first connecting rod 28 swings around the second supporting portion 29, two sides of the end of the first connecting rod 28 are respectively located at the lower ends of the driving arm 14 at the normal power side and the driving arm 14 at the standby power side, when the two are in a horizontal state, the normal power switch 1 and the standby power switch 2 are both in an open state, when the normal power switch 1 is in a closed state, the driving arm 14 at the normal power side drives the first connecting rod 28 to rotate counterclockwise, and due to the lever principle, one end of the first connecting rod 28, which is close to the driving arm 14 at the normal power side, moves, the driving arm 14 at the side of the standby power supply is driven to rotate, so that the standby power supply switch is disconnected, and similarly, when the standby power supply is closed, the driving arm 14 at the side of the standby power supply drives the first connecting rod 28 to move downwards close to the driving arm 14 at the side of the standby power supply, and due to the lever principle, the driving arm 14 at the side of the standby power supply, far away from the first connecting rod 28, moves upwards, so that the common power supply switch 1 is disconnected, and the device is used, so that the common power supply switch 1 and the standby power supply switch 2 cannot be powered on simultaneously, the whole conversion process can achieve the function of 'disconnection before connection' of power failure before connection, the problem that a mechanical self-locking device is not available between the common power supply and the standby power supply of the dual power supply conversion mechanism in the prior art is solved, and the situation that the control switches of the, the problem of safety accidents caused by the fact that the common power switch 1 and the standby power switch 2 are in short circuit is avoided.

Of course, the utility model discloses the application does not do specific restriction to switch 1 commonly used and stand-by power switch 2's position, and in other embodiments, switch 1 commonly used and stand-by power switch 2's position can exchange each other.

Of course, the present invention is not limited to the structure of the biasing member, and in other embodiments, the biasing member 19 may be an elastic member such as a rubber member that can deform.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A dual power transfer mechanism, comprising:

the common power switch (1) is a vacuum tube switch;

the standby power switch (2) is a vacuum tube switch;

the driving mechanism comprises a first driving part (3) and a second driving part (4), wherein the first driving part (3) drives the common power switch (1) to be switched on and off through a lever structure; the second driving part (4) drives the standby power switch (2) to be switched on or switched off through a lever structure; the moment arm of the lever structure on one side of the driving mechanism is larger than the moment arm on one side of the common power switch (1) or the standby power switch (2).

2. The dual power transfer mechanism of claim 1,

the common power switch (1) comprises a first fixed contact (11) and a first movable contact (10) in transmission connection with the lever structure;

the standby power switch (2) comprises a second fixed contact (13) and a second movable contact (12) in transmission connection with the lever structure.

3. The dual power transfer mechanism of claim 2, wherein the lever structure comprises: the device comprises a first supporting part (15) and a driving arm (14) rotatably arranged on the first supporting part (15), wherein the driving arm (14) is of an L-shaped structure, one end of the driving arm (14) rotates under the driving of a driving mechanism, and the other end of the driving arm is in transmission connection with the first moving contact (10) or the second moving contact (12).

4. The dual power supply switching mechanism according to claim 3, wherein the driving arm (14) is provided with a first connecting rod (17) rotationally connected therewith, and the first connecting rod (17) drives the first movable contact (10) or the second movable contact (12) to move along a straight line, so as to switch on or off the common power switch (1) or the standby power switch (2).

5. The dual power transfer mechanism of claim 2, wherein the lever structure comprises: the device comprises a first supporting part (15) and a driving arm (14) rotatably arranged on the first supporting part (15), wherein the driving arm (14) is linearly arranged, one end of the driving arm (14) rotates under the driving of a driving mechanism, and the other end of the driving arm is in transmission connection with the first moving contact (10) or the second moving contact (12).

6. The dual power supply switching mechanism according to claim 5, wherein the driving arm (14) is provided with a first connecting rod (17) rotationally connected therewith, and the first connecting rod (17) drives the first movable contact (10) or the second movable contact (12) to move along a straight line, so as to switch on or off the common power switch (1) or the standby power switch (2).

7. The dual power transfer mechanism of any one of claims 3-6, wherein the drive mechanism is a permanent magnet drive mechanism.

8. The dual power transfer mechanism of claim 7,

the permanent magnet driving mechanism comprises a closing coil (7) and a closing iron core (9) which are oppositely arranged to enable a power supply to be electrified, a separating coil (6) and a separating iron core (8) which are oppositely arranged to enable the power supply to be powered off, and an armature (18) which is arranged on the driving arm (14) and corresponds to the closing iron core (9) and the separating iron core (8);

the permanent magnet driving mechanism further comprises a permanent magnet (5), and the permanent magnet (5) enables the armature (18) and the closing iron core (9) to be in a fit state so as to enable the common power switch (1) or the standby power switch (2) to be electrified; or the permanent magnet (5) enables the armature (18) and the closing iron core (9) to keep a separated state, so that the common power switch (1) or the standby power switch (2) is powered off.

9. The dual power transfer mechanism of claim 8, wherein the permanent magnet drive mechanism further comprises: and the biasing member (19) is used for applying a biasing force to the driving arm (14) to enable the driving arm to move away from the closing iron core (9) so as to overcome the attraction force of the permanent magnet (5) to enable the armature (18) to move away from the closing iron core (9).

10. The dual power transfer mechanism of claim 9, wherein the biasing member (19) is a spring.

11. A switchgear comprising the dual power transfer machine of claim 1.