CN111681903B - Switching-off and switching-on single-shaft operation limiting structure and switching device - Google Patents
Switching-off and switching-on single-shaft operation limiting structure and switching device Download PDFInfo
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- CN111681903B CN111681903B CN202010372552.0A CN202010372552A CN111681903B CN 111681903 B CN111681903 B CN 111681903B CN 202010372552 A CN202010372552 A CN 202010372552A CN 111681903 B CN111681903 B CN 111681903B
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- circuit breaker
- closing
- opening
- shaft
- switching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
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Abstract
The invention relates to a switching-off and switching-on single-shaft operation limiting structure and a switching device, wherein the switching-off and switching-on single-shaft operation limiting structure comprises a rack, and a switching-off and switching-on single shaft and a switching-off and switching-on indicating shaft are assembled on the rack; the switching-on and switching-off indicating shaft is provided with a switching-on position corresponding to the switching-on state of the corresponding circuit breaker or isolating knife and a switching-off position corresponding to the switching-off state of the corresponding circuit breaker or isolating knife; the frame is also provided with a breaker side limiting swing arm and an isolation knife side limiting swing arm; the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are respectively provided with a closing swing limit and an opening swing limit; elastic reset pieces are arranged between the breaker side limiting swing arm and the frame and between the isolation knife side limiting swing arm and the frame, and a breaker side elastic driving piece is arranged between the breaker side limiting swing arm and the breaker indicating shaft; an isolation knife side elastic driving piece is arranged between the isolation knife side limiting swing arm and the isolation knife indicating shaft.
Description
Technical Field
The invention relates to a switching-on and switching-off single-shaft operation limiting structure and a switching device.
Background
The arrangement modes of the breaker and the disconnecting switch of the switch device are two, wherein one mode is that the disconnecting switch is arranged in the breaker, and the other mode is that the disconnecting switch is arranged outside the breaker. When the isolation knife is arranged outside the circuit breaker, the opening and closing of the circuit breaker are realized by driving the circuit breaker operating shaft through the manually operated circuit breaker operating rod, and the opening and closing of the isolation knife are realized by driving the isolation knife operating rod through the manually operated isolation knife operating rod.
Chinese patent with publication number CN209328789U discloses an external isolated circuit breaker, which comprises a circuit breaker body and an isolating knife (i.e. an isolating switch in the above patent), wherein the circuit breaker body is connected with a circuit breaker operating rod through a circuit breaker operating shaft, the isolating knife is connected with an isolating knife operating rod through an isolating knife operating shaft, and the circuit breaker body and the isolating knife are switched on and off through corresponding operating rods operated manually. When the breaker body and the isolation knife are used for switching on and off, each operating rod needs to be operated by two hanging rods, the operation is complex, and the switching on and off efficiency is low.
In order to improve the switching-on and switching-off efficiency, a switching-on and switching-off single shaft is considered at present, and the switching-on and switching-off single shaft drives the circuit breaker operating shaft and the isolation knife operating shaft to be linked through a transmission mechanism according to a certain rule. The specific switching-on and switching-off rule is as shown in fig. 13, when the initial position a is, the isolation switch is at the isolation switch-on position B when the switching-on and switching-off single shaft rotates clockwise alpha 1, the circuit breaker is at the circuit breaker switching-on position C when the switching-on and switching-off single shaft rotates clockwise alpha 2, the circuit breaker is at the circuit breaker switching-off position E when the switching-on and switching-off single shaft rotates counterclockwise beta 1, and the isolation switch is at the isolation switch-off position D when the switching-on and switching-off single shaft rotates counterclockwise beta 2.
However, in the process of driving the switchgear to act by using the single opening and closing shaft, a corresponding limit structure needs to be designed in order to ensure that the circuit breaker and the disconnecting switch are in place.
Disclosure of Invention
The invention aims to provide a switching-on and switching-off single-shaft operation limiting structure for ensuring the switching-on and switching-off of a circuit breaker and an isolation switch in place; the invention also aims to provide the switch equipment for ensuring the switching-on and switching-off of the circuit breaker and the isolating switch to be in place.
In order to achieve the purpose, the invention discloses a switching-on/off single-shaft operation limiting structure, which adopts the technical scheme that:
the opening and closing single-shaft operation limiting structure comprises a rack, wherein an opening and closing single shaft and an opening and closing indicating shaft are rotatably assembled on the rack;
the switching-on and switching-off indicating shaft comprises a circuit breaker indicating shaft and an isolating knife indicating shaft; the switching-on and switching-off indicating shaft is provided with a switching-on position corresponding to the switching-on state of the corresponding circuit breaker or isolating knife and a switching-off position corresponding to the switching-off state of the corresponding circuit breaker or isolating knife;
the machine frame is also rotatably provided with a breaker side limiting swing arm and an isolation knife side limiting swing arm; the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are respectively provided with a closing swing limit and an opening swing limit;
elastic reset pieces are arranged between the breaker side limiting swing arm and the frame and between the isolation knife side limiting swing arm and the frame;
a circuit breaker side elastic driving piece is arranged between the circuit breaker side limiting swing arm and the circuit breaker indicating shaft;
an isolation knife side elastic driving piece is arranged between the isolation knife side limiting swing arm and the isolation knife indicating shaft;
the elastic reset piece is used for applying an acting force swinging towards a closing swing limit to the corresponding circuit breaker side limiting swing arm and applying an acting force swinging towards an opening swing limit to the corresponding isolating knife side limiting swing arm;
the circuit breaker side elastic driving piece is used for enabling the circuit breaker side limiting swing arm to be in a closing swing limit together with the elastic resetting piece on the corresponding side when the circuit breaker indicating shaft is in a closing position; when the breaker indicates that the axial opening position moves, the breaker indicating shaft is driven to overcome the acting force of the elastic reset piece at the corresponding side, so that the side limiting swing arm of the breaker has the tendency of moving towards the opening swing limit;
the isolation knife side elastic driving piece is used for enabling the isolation knife side limiting swing arm to be in the opening swing limit together with the elastic reset piece on the corresponding side when the isolation knife indicating shaft is in the opening position; when the isolating knife indicates axial switching-on position movement, the isolating knife is used for overcoming the acting force of the elastic reset piece at the corresponding side under the driving of the isolating knife indicating shaft, so that the isolating knife side limiting swing arm has the tendency of moving towards the switching-on swing limit;
the opening and closing single shaft is a self-resetting shaft, and an isolating knife switch-off position, a circuit breaker switch-off position, an initial position, an isolating knife switch-on position and a circuit breaker switch-on position are arranged from one side swing limit to the other side swing limit; the disconnecting position of the isolating knife and the switching-on position of the circuit breaker respectively correspond to the swing limits on two sides of the switching-on and switching-off single shaft;
the opening and closing single shaft is provided with an opening stopping arm and a closing stopping arm;
the opening and stopping arm is used for being matched with the circuit breaker side limiting swing arm, and when the circuit breaker side limiting swing arm is positioned at the opening swing limit, the opening and stopping arm is avoided so that the opening and closing single shaft can move to the opening and closing position of the isolation knife from the initial position; when the circuit breaker side limiting swing arm is positioned at a closing swing limit and the opening and closing single shaft moves from an initial position to an isolation knife opening position, the circuit breaker side limiting swing arm is used for being blocked on a swing path of the opening and closing blocking arm so as to limit the opening and closing single shaft at the opening and closing position of the circuit breaker;
the closing stopping arm is used for being matched with the isolating knife side limiting swing arm, and when the isolating knife side limiting swing arm is positioned at a closing swing limit, the closing stopping arm is avoided so that the opening and closing single shaft can move to a circuit breaker opening and closing position from an initial position; when the isolation knife side limiting swing arm is positioned at the opening swing limit and the opening and closing single shaft moves from the initial position to the closing position of the circuit breaker, the isolation knife side limiting swing arm is used for being stopped on a swing path of the closing stopping arm so as to limit the opening and closing single shaft at the opening and closing position of the isolation knife.
The beneficial effects are that: when the switching single shaft drives the circuit breaker operating shaft and the isolation knife operating shaft to realize switching of the circuit breaker and the isolation knife, the circuit breaker side limiting swing arm limits and avoids the switching-off stopping arm, and the isolation knife side limiting swing arm limits and avoids the switching-on stopping arm, so that not only is continuous switching-off or continuous switching-on operation of the switch equipment avoided, but also the circuit breaker is guaranteed to be switched off again after the isolation knife is switched off, and the isolation knife is switched on again after the circuit breaker is switched on, so that misoperation in the switching-off single shaft driving process is avoided, and switching-off of the circuit breaker and the isolation knife is guaranteed to be performed in a correct sequence.
Furthermore, the closing swing limit and the opening swing limit of the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are formed by limiting pins on the rack.
The beneficial effects are that: the limiting pin is simple in structure, convenient to install and easy to limit the corresponding limiting swing arm.
Furthermore, be equipped with circuit breaker instruction axle connecting lever on the circuit breaker instruction axle, circuit breaker side elastic drive spare is extension spring or compression spring, and extension spring or compression spring connect between circuit breaker side spacing swing arm and circuit breaker instruction axle connecting lever.
The beneficial effects are that: the extension spring or the compression spring has the advantages of simple structure and lower cost, and is easy to drive the side limiting swing arm of the circuit breaker to move.
Furthermore, the isolating cutter indicating shaft is provided with an isolating cutter indicating shaft connecting lever, the isolating cutter side elastic driving piece is an extension spring or a compression spring, and the extension spring or the compression spring is connected between the isolating cutter side limiting swing arm and the isolating cutter indicating shaft connecting lever.
The beneficial effects are that: the extension spring or the compression spring has the advantages of simple structure and lower cost, and is easy to drive the spacing swing arm at the side of the isolation knife to move.
Further, the frame comprises a front side plate and a rear side plate; the circuit breaker side limiting swing arm, the isolation knife side limiting swing arm, the brake separating blocking arm and the switch-on blocking arm are all arranged between the front side plate and the rear side plate.
The beneficial effects are that: the circuit breaker side limiting swing arm, the isolation knife side limiting swing arm, the brake separating blocking arm and the switch-on blocking arm are arranged between the front side plate and the rear side plate, so that the stability of all parts in motion can be improved.
In order to achieve the purpose, the technical scheme of the switch device is as follows:
the switch device comprises a circuit breaker, an isolation knife and a switching-off and switching-on single-shaft operation limiting structure, wherein the circuit breaker is provided with a circuit breaker operating shaft, and the isolation knife is provided with an isolation knife operating shaft;
the opening and closing single-shaft operation limiting structure comprises a rack, wherein an opening and closing single shaft and an opening and closing indicating shaft are rotatably assembled on the rack;
the opening and closing single shaft is used for driving the circuit breaker operating shaft and the isolation knife operating shaft to rotate;
the switching-on and switching-off indicating shaft comprises a circuit breaker indicating shaft and an isolating knife indicating shaft; the switching-on and switching-off indicating shaft is provided with a switching-on position corresponding to the switching-on state of the corresponding circuit breaker or isolating knife and a switching-off position corresponding to the switching-off state of the corresponding circuit breaker or isolating knife;
the machine frame is also rotatably provided with a breaker side limiting swing arm and an isolation knife side limiting swing arm; the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are respectively provided with a closing swing limit and an opening swing limit;
elastic reset pieces are arranged between the breaker side limiting swing arm and the frame and between the isolation knife side limiting swing arm and the frame;
a circuit breaker side elastic driving piece is arranged between the circuit breaker side limiting swing arm and the circuit breaker indicating shaft;
an isolation knife side elastic driving piece is arranged between the isolation knife side limiting swing arm and the isolation knife indicating shaft;
the elastic reset piece is used for applying an acting force swinging towards a closing swing limit to the corresponding breaker side limiting swing arm and applying an acting force swinging towards a separating swing limit to the corresponding isolating knife side limiting swing arm;
the circuit breaker side elastic driving piece is used for enabling the circuit breaker side limiting swing arm to be in a closing swing limit together with the elastic resetting piece on the corresponding side when the circuit breaker indicating shaft is in a closing position; when the breaker indicates that the axial opening position moves, the breaker indicating shaft is driven to overcome the acting force of the elastic reset piece at the corresponding side, so that the side limiting swing arm of the breaker has the tendency of moving towards the opening swing limit;
the isolation knife side elastic driving piece is used for enabling the isolation knife side limiting swing arm to be in the opening swing limit together with the elastic reset piece on the corresponding side when the isolation knife indicating shaft is in the opening position; when the isolating knife indicates axial switching-on position movement, the isolating knife is used for overcoming the acting force of the elastic reset piece at the corresponding side under the driving of the isolating knife indicating shaft, so that the isolating knife side limiting swing arm has the tendency of moving towards the switching-on swing limit;
the opening and closing single shaft is a self-resetting shaft, and an isolating knife switch-off position, a circuit breaker switch-off position, an initial position, an isolating knife switch-on position and a circuit breaker switch-on position are arranged from one side swing limit to the other side swing limit; the disconnecting position of the isolating knife and the switching-on position of the circuit breaker respectively correspond to the swing limits on two sides of the switching-on and switching-off single shaft;
the opening and closing single shaft is provided with an opening and closing stopping arm and a closing stopping arm;
the opening and stopping arm is used for being matched with the circuit breaker side limiting swing arm, and when the circuit breaker side limiting swing arm is positioned at the opening swing limit, the opening and stopping arm is avoided so that the opening and closing single shaft can move to the opening and closing position of the isolation knife from the initial position; when the circuit breaker side limiting swing arm is positioned at a closing swing limit and the opening and closing single shaft moves from an initial position to an isolation knife opening position, the circuit breaker side limiting swing arm is used for being blocked on a swing path of the opening and closing blocking arm so as to limit the opening and closing single shaft at the opening and closing position of the circuit breaker;
the closing stopping arm is used for being matched with the isolating knife side limiting swing arm, and when the isolating knife side limiting swing arm is positioned at a closing swing limit, the closing stopping arm is used for avoiding the closing stopping arm so that the opening and closing single shaft can move to a circuit breaker closing position from an initial position; when the isolation knife side limiting swing arm is positioned at the opening swing limit and the opening and closing single shaft moves from the initial position to the closing position of the circuit breaker, the isolation knife side limiting swing arm is used for being stopped on a swing path of the closing stopping arm so as to limit the opening and closing single shaft at the opening and closing position of the isolation knife.
The beneficial effects are that: when the switching single shaft drives the circuit breaker operating shaft and the isolation knife operating shaft to realize switching of the circuit breaker and the isolation knife, the circuit breaker side limiting swing arm limits and avoids the switching-off stopping arm, and the isolation knife side limiting swing arm limits and avoids the switching-on stopping arm, so that not only is continuous switching-off or continuous switching-on operation of the switch equipment avoided, but also the circuit breaker is guaranteed to be switched off again after the isolation knife is switched off, and the isolation knife is switched on again after the circuit breaker is switched on, so that misoperation in the switching-off single shaft driving process is avoided, and switching-off of the circuit breaker and the isolation knife is guaranteed to be performed in a correct sequence.
Furthermore, the closing swing limit and the opening swing limit of the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are formed by limiting pins on the rack.
The beneficial effects are that: the limiting pin is simple in structure, convenient to install and easy to limit the corresponding limiting swing arm.
Furthermore, be equipped with circuit breaker instruction axle connecting lever on the circuit breaker instruction axle, circuit breaker side elastic drive spare is extension spring or compression spring, and extension spring or compression spring connect between circuit breaker side spacing swing arm and circuit breaker instruction axle connecting lever.
The beneficial effects are that: the extension spring or the compression spring has the advantages of simple structure and lower cost, and is easy to drive the side limiting swing arm of the circuit breaker to move.
Furthermore, the isolating cutter indicating shaft is provided with an isolating cutter indicating shaft connecting lever, the isolating cutter side elastic driving piece is an extension spring or a compression spring, and the extension spring or the compression spring is connected between the isolating cutter side limiting swing arm and the isolating cutter indicating shaft connecting lever.
The beneficial effects are that: the extension spring or the compression spring has the advantages of simple structure and lower cost, and is easy to drive the spacing swing arm at the side of the isolation knife to move.
Further, the frame comprises a front side plate and a rear side plate; the circuit breaker side limiting swing arm, the isolation knife side limiting swing arm, the brake separating blocking arm and the switch-on blocking arm are all arranged between the front side plate and the rear side plate.
The beneficial effects are that: the circuit breaker side limiting swing arm, the isolation knife side limiting swing arm, the brake separating blocking arm and the switch-on blocking arm are arranged between the front side plate and the rear side plate, so that the stability of all parts in motion can be improved.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of a single-axis operation limiting structure for opening and closing according to the present invention;
FIG. 2 is a front view of FIG. 1 (front side panel not shown);
FIG. 3 is a schematic diagram of the circuit breaker of FIG. 2;
FIG. 4 is a schematic structural diagram of switching-on and switching-off single-shaft resetting after the circuit breaker is switched off in FIG. 3;
fig. 5 is a schematic structural diagram of the reclosing of the circuit breaker after the single-shaft reclosing reset in fig. 4;
FIG. 6 is a schematic structural diagram of the disconnecting blade after the single-shaft resetting of the disconnecting and closing switch in FIG. 4;
FIG. 7 is a schematic structural diagram of the uniaxial reset of the opening and closing switch after the isolation knife is opened in FIG. 6;
fig. 8 is a schematic structural diagram of closing of the isolation knife after the single shaft of the opening and closing switch is reset in fig. 7;
FIG. 9 is a schematic structural diagram of the closing and opening single-shaft reset of the isolation knife in FIG. 8 after closing;
fig. 10 is a schematic structural view of the disconnecting link of the isolating blade after the single-shaft resetting of the disconnecting link in fig. 9;
fig. 11 is a schematic structural diagram of the closing of the circuit breaker after the single-shaft resetting of the opening and closing in fig. 9;
fig. 12 is a structural schematic diagram of switching-on and switching-off single-shaft reset of the circuit breaker in fig. 11 after switching-on;
FIG. 13 is a diagram illustrating a single-axis opening and closing state of a switch in a prior art;
in the figure: 1-rear side plate; 2-opening and closing single shaft; 3-isolating knife indicating shaft; 4-circuit breaker indicating shaft; 5-isolating the turning arm of the indicating shaft of the cutter; 6-indicating shaft crank arm of circuit breaker; 7-brake-separating stop arm; 8-closing blocking arm; 9-a circuit breaker side limiting swing arm; 10-isolating the cutter side limiting swing arm; 11-a first tension spring; 12-a second tension spring; 13-a third tension spring; 14-a fourth tension spring; 15-a first limit pin; 16-a second limit pin; 17-a third limit pin; 18-a fourth spacing pin; 19-a fifth limit pin; 20-a sixth limit pin; 21-a first hangers; 22-a second hanger; 23-a sleeve; 24-operating handle connection; 25-front side plate; 26-a first articulated shaft; 27-a second articulated shaft; 28-a first ear panel; 29-a second ear panel; 30-a third ear panel; 31-a fourth ear plate; a-an initial position; b, isolating a knife switch-on position; c-breaker closing position; d, isolating the knife switch-off position; e-breaker opening position.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in fig. 1 and 2, the opening and closing single-shaft operation limiting structure comprises a frame, wherein the frame comprises a front side plate 25 and a rear side plate 1, the front side plate 25 and the rear side plate 1 are arranged at intervals along the front and rear directions, and an opening and closing single shaft 2 is rotatably assembled on the front side plate 25 and the rear side plate 1. One end of the opening and closing single shaft 2 is provided with a driving chain wheel (not shown) and a driving gear (not shown), the driving chain wheel is used for driving the circuit breaker operating shaft to rotate, and the driving gear is used for driving the isolation knife operating shaft to rotate; the other end of the opening and closing single shaft 2 is provided with an operating handle connecting part 24, and the operating handle connecting part 24 is used for connecting an operating handle.
In this embodiment, the opening and closing single shaft 2 is further equipped with a sleeve 23 in a rotation stopping manner, the sleeve 23 is located between the front side plate 25 and the rear side plate 1, the sleeve 23 is provided with an opening stopping arm 7 and a closing stopping arm 8 which extend along the radial direction of the sleeve, and the opening stopping arm 7 and the closing stopping arm 8 are arranged in a V shape.
As shown in fig. 2, the rear side plate 1 is fixedly provided with a first limit pin 15, a second limit pin 16, a third limit pin 17, a fourth limit pin 18, a fifth limit pin 19, and a sixth limit pin 20, and each limit pin is arranged around the switching-on/off single shaft 2. The first limiting pin 15, the second limiting pin 16, the fifth limiting pin 19 and the sixth limiting pin 20 are not located on the moving path of the opening and closing stop arm 7 and the closing stop arm 8, the third limiting pin 17 and the fourth limiting pin 18 are located on the moving path of the opening and closing stop arm 7 and the closing stop arm 8, the third limiting pin 17 is used for limiting the opening and closing stop arm 7 at the opening and closing position of the isolation blade, and the fourth limiting pin 18 is used for limiting the closing stop arm 8 at the closing position of the circuit breaker.
In the embodiment, a circuit breaker indicating shaft 4 is rotatably assembled on the left side of the rear side plate 1, and a circuit breaker indicating shaft connecting lever 6 is rotatably assembled on the circuit breaker indicating shaft 4; a circuit breaker side limiting swing arm 9 is hinged to the upper portion of the circuit breaker indicating shaft 4 on the rear side plate 1 through a first hinge shaft 26, the circuit breaker side limiting swing arm 9 is of a lever structure, a first lug plate 28 and a second lug plate 29 are arranged on the circuit breaker side limiting swing arm 9, the first lug plate 28 and the second lug plate 29 are respectively located on two sides, located on the first hinge shaft 26, of the circuit breaker side limiting swing arm 9, a first tension spring 11 is arranged between the circuit breaker side limiting swing arm 9 and the circuit breaker indicating shaft connecting lever 6, the first tension spring 11 forms a circuit breaker side elastic driving piece, one end of the first tension spring 11 is connected to the first lug plate 28, and the other end of the first tension spring 11 is connected to the circuit breaker indicating shaft connecting lever 6; a second tension spring 12 is arranged between the circuit breaker side limiting swing arm 9 and the rear side plate 1, the second tension spring 12 forms an elastic reset piece, a first hanging lug 21 is arranged on the rear side plate 1, one end of the second tension spring 12 is connected to the second lug plate 29, and the other end of the second tension spring is connected to the first hanging lug 21. Wherein, the circuit breaker side limiting swing arm 9 rotates the in-process around first articulated shaft 26, and the right-hand member of circuit breaker side limiting swing arm 9 is spacing between first spacer pin 15 and second spacer pin 16, and wherein, first spacer pin 15 forms the separating brake swing limit of circuit breaker side limiting swing arm 9, and second spacer pin 16 forms the closing brake swing limit of circuit breaker side limiting swing arm 9. It should be noted that the elastic force of the second tension spring 12 is equal to or slightly greater than the elastic force of the first tension spring 11 so that the breaker-side limit swing arm 9 is maintained in the horizontal position when the breaker indicating shaft crank arm 6 is in the on position, and the first hanging lug 21 is above the breaker indicating shaft crank arm 6.
In the embodiment, an isolation knife indicating shaft 3 is rotatably assembled on the right side of the rear side plate 1, and an isolation knife indicating shaft connecting lever 5 is rotatably assembled on the isolation knife indicating shaft 3; an isolation knife side limiting swing arm 10 is hinged to the upper portion of the isolation knife indicating shaft 3 on the rear side plate 1 through a second hinge shaft 27, the isolation knife side limiting swing arm 10 is of a lever structure, a third lug plate 30 and a fourth lug plate 31 are arranged on the isolation knife side limiting swing arm 10, the third lug plate 30 and the fourth lug plate 31 are respectively located on two sides, located on the second hinge shaft 27, of the isolation knife side limiting swing arm 10, a third tension spring 13 is arranged between the isolation knife side limiting swing arm 10 and the isolation knife indicating shaft connecting lever 5, the third tension spring 13 forms an isolation knife side elastic driving piece, one end of the third tension spring 13 is connected to the third lug plate 30, and the other end of the third tension spring is connected to the isolation knife indicating shaft connecting lever 5; a fourth tension spring 14 is arranged between the spacing swing arm 10 on the isolating cutter side and the rear side plate 1, the fourth tension spring 14 forms an elastic reset piece, a second lug 22 is further arranged on the rear side plate 1, one end of the fourth tension spring 14 is connected to the fourth lug plate 31, and the other end of the fourth tension spring is connected to the second lug 22. In the process that the isolation blade side limiting swing arm 10 rotates around the second hinge shaft 27, the right end of the isolation blade side limiting swing arm 10 is limited between the fifth limiting pin 19 and the sixth limiting pin 20, wherein the fifth limiting pin 19 forms the switching-off swing limit of the isolation blade side limiting swing arm 10, and the sixth limiting pin 20 forms the switching-on swing limit of the isolation blade side limiting swing arm 10. It should be noted that the elastic force of the fourth tension spring 14 is equal to or slightly greater than that of the third tension spring 13, so that the isolating blade side limiting swing arm 10 is kept in a horizontal position when the isolating blade indicating shaft crank arm 5 is in the switch-off position, and the second hanging lug 22 is positioned above the isolating blade indicating shaft crank arm 5.
In this embodiment, the third limit pin 17 forms one of the swing limits of the swing stroke of the switching single shaft 2, and the fourth limit pin 18 forms the other swing limit of the swing stroke of the switching single shaft 2.
It should be noted that the breaker side limit swing arm 9, the isolation knife side limit swing arm 10, the breaker indicating shaft connecting lever 6, the isolation knife indicating shaft connecting lever 5, the opening stop arm 7 and the closing stop arm 8 are all arranged between the front side plate 25 and the rear side plate 1.
According to the invention, the breaker rotates 30 degrees anticlockwise on the switching-off single shaft 2 for switching-off and rotates 90 degrees clockwise for switching-on, and the isolation knife rotates 90 degrees anticlockwise on the switching-off single shaft 2 for switching-on and rotates 30 degrees clockwise for switching-on. Wherein, the opening and closing single shaft 2 can be self-reset.
When the breaker and the isolation knife are switched on and off, the limiting process of the limiting device in the embodiment is as follows:
as shown in fig. 2, in the initial state, the circuit breaker is closed and the isolation blade is closed, the circuit breaker side limit swing arm 9 is located on the moving path of the opening stop arm 7, and the isolation blade side limit swing arm 10 is not located on the moving path of the closing stop arm 8. The opening and closing single shaft 2 rotates anticlockwise by 30 degrees, as shown in fig. 3, the circuit breaker is opened, the circuit breaker indicating shaft connecting lever 6 is in the opening position and pulls the first tension spring 11, the circuit breaker side limiting swing arm 9 tends to rotate anticlockwise around the first hinge shaft 26, and the opening and closing single shaft 2 can only reset because the opening and closing stopping arm 7 is limited by the circuit breaker side limiting swing arm 9; as shown in fig. 4, before the switching-off and switching-on single shaft 2 is reset, the circuit breaker side limiting swing arm 9 is separated from the switching-off and stopping arm 7 and rotates counterclockwise around the first hinge shaft 26 under the pulling force of the first tension spring 11, the circuit breaker side limiting swing arm 9 is separated from the second limiting pin 16 and then stopped by the first limiting pin 15, the circuit breaker side limiting swing arm 9 is not located on the movement path of the switching-off and stopping arm 7, and at this time, the circuit breaker is in a switching-off state, and the isolating switch is in a switching-on state. If, when initial state, the switching-on and switching-off unipolar 2 clockwise rotates under operating handle's drive, only can drive the circuit breaker and close a floodgate, nevertheless because the circuit breaker has and prevents to close a floodgate interlock again after closing, so the circuit breaker can not close a floodgate again, and then switching-on and switching-off unipolar 2 resets, can not change the state of circuit breaker and isolation sword.
When the breaker is in opening state, the isolating knife is in closing state, and the opening and closing single shaft 2 is in reset state, as shown in fig. 6, the opening and closing single shaft 2 rotates anticlockwise for 30 degrees firstly, and the breaker is opened, so the breaker can not be opened again; at this time, the breaker-side limit swing arm 9 is not located on the moving path of the opening stop arm 7, so that the opening and closing single shaft 2 can continue to rotate counterclockwise to 90 °, at this time, the isolation knife is opened, the isolation knife-side limit swing arm 10 is located in the horizontal position under the combined action of the third tension spring 13 and the fourth tension spring 14, and the isolation knife-side limit swing arm 10 is located on the moving path of the closing stop arm 8. Then, as shown in fig. 7, the switching single shaft 2 is reset, and both the breaker and the disconnecting switch are in the open state. If the breaker is in the opening state, the isolation knife is in the closing state, and the opening and closing single shaft 2 is in the reset state, the opening and closing single shaft 2 rotates clockwise by 30 degrees firstly, as shown in fig. 5, the isolation knife has the interlocking for preventing the closing and then closing again, so the isolation knife cannot be closed again; because the isolating knife side limiting swing arm 10 is not positioned on the movement path of the closing stopping arm 8, the switching single shaft 2 can continuously rotate clockwise to 90 degrees, at the moment, the circuit breaker is closed, the circuit breaker side limiting swing arm 9 returns to the horizontal position again under the combined action of the first tension spring 11 and the second tension spring 12, and then the switching single shaft 2 resets, and the circuit breaker and the isolating knife are restored to the initial state.
When the breaker and the isolation knife are both in opening and closing, and the opening and closing single shaft 2 is in a reset state, the opening and closing single shaft 2 rotates clockwise, as shown in fig. 8, because the isolation knife side limiting swing arm 10 is positioned on a moving path of the closing stop arm 8, the opening and closing single shaft 2 can only rotate clockwise by 30 degrees; after the switching-on and switching-off single shaft 2 rotates clockwise by 30 degrees, the isolation knife is switched on, the isolation knife indicating shaft connecting lever 5 is in a switching-off position and pulls the third tension spring 13, and the isolation knife side limiting swing arm 10 is stopped by the switching-on stopping arm 8 and tends to rotate clockwise around the second hinge shaft 27. Then, as shown in fig. 9, the circuit breaker is opened and the isolation knife is closed, the opening and closing single shaft 2 is reset, and the isolation knife side limit swing arm 10 rotates clockwise under the pulling force of the third tension spring 13 and is stopped by the sixth limit pin 20. If, all be in the separating brake at circuit breaker and isolation sword, divide-shut brake unipolar 2 is under the reset state, and 2 anticlockwise rotations of divide-shut brake are because isolation sword and circuit breaker all are in the separating brake state, and anticlockwise rotation 30 and 90 once more can not change the state of circuit breaker and isolation sword.
When the breaker is opened and the isolation knife is closed, and the opening and closing single shaft 2 is in a reset state, the opening and closing single shaft 2 rotates clockwise, as shown in fig. 11, the opening and closing single shaft 2 rotates clockwise 30 degrees first, and the isolation knife is already in a closing state, so that the state of the isolation knife cannot be changed; because the isolating knife side limiting swing arm 10 is not positioned on the motion route of the closing stop arm 8, the opening and closing single shaft 2 can continuously rotate clockwise to 90 degrees, at the moment, the breaker is closed, and the breaker side limiting swing arm 9 returns to the horizontal position; then, as shown in fig. 12, the breaker and the disconnecting switch are both closed, and the switching single shaft 2 is reset, thereby completing the entire switching cycle. If the switching-on and switching-off single shaft 2 rotates anticlockwise when the circuit breaker is switched off and the isolating switch is switched on and the switching-on and switching-off single shaft 2 is in a reset state, as shown in fig. 10, the switching-on and switching-off single shaft 2 rotates anticlockwise firstly by 30 degrees, and the state of the circuit breaker cannot be changed because the circuit breaker is already in a switching-off state; because the circuit breaker side limiting swing arm 9 is not positioned on the moving path line of the opening and closing stop arm 7, the opening and closing single shaft 2 can continuously rotate anticlockwise to 90 degrees, at the moment, the isolation knife is opened, the isolation knife side limiting swing arm 10 returns to the horizontal position, and then the opening and closing single shaft 2 resets.
the difference from the embodiment 1 is that the thickness of the rear side plate is larger, the rear side plate is provided with a groove structure, the opening stop arm, the closing stop arm, the breaker side limiting swing arm and the isolation knife side limiting swing arm are all located in the groove, and the closing swing limit and the opening swing limit are formed by groove walls of the groove. In other embodiments, the closing swing limit and the opening swing limit of the breaker side limiting swing arm and the isolation knife side limiting swing arm can be formed by integrally molded convex parts on the rear side plate.
the difference with embodiment 1 lies in, first articulated shaft and the coaxial arrangement of circuit breaker indicating shaft, and the second articulated shaft and the coaxial arrangement of isolation sword indicating shaft all are equipped with the torsional spring on circuit breaker indicating shaft and the isolation sword indicating shaft, and epaxial torsional spring of circuit breaker indicating constitutes circuit breaker side elastic drive spare, and epaxial torsional spring of isolation sword indicating constitutes isolation sword side elastic drive spare. Taking the circuit breaker indicating shaft as an example, one end of the torsion spring is fixed on the circuit breaker indicating shaft, and the other end of the torsion spring is used for driving the circuit breaker side limiting swing arm to rotate towards the first limiting pin by the second limiting pin when the circuit breaker indicating shaft is opened.
the difference with embodiment 1 lies in, circuit breaker side elastic drive spare and isolation sword side elastic drive spare are the pressure spring, and circuit breaker instruction axle turning arm is in the top of the spacing swing arm of circuit breaker side this moment, and isolation sword instruction axle turning arm is in the top of the spacing swing arm of isolation sword.
the difference with embodiment 1 lies in, the cover is equipped with first torsional spring on the first articulated shaft, and the cover is equipped with the second torsional spring on the second articulated shaft, and first torsional spring and second torsional spring constitute the elasticity piece that resets respectively, and the torsional spring on the first articulated shaft is applyed to the spacing swing arm of circuit breaker side and is being equipped with the effort to the swing of second spacer pin, and the torsional spring on the second articulated shaft is applyed to the spacing swing arm of isolation sword side and is being equipped with the effort to the swing of fifth spacer pin.
the difference with embodiment 1 is that the circuit breaker side limiting swing arm and the isolation knife limiting swing arm are both in swing rod structures. The circuit breaker side limiting swing arm is taken as an example, the second tension spring is not arranged, the left end of the circuit breaker side limiting swing arm is hinged to the rear side plate through a hinge shaft, the hinge shaft is sleeved with a torsion spring, the torsion spring forms a reset elastic part and is used for applying acting force to the circuit breaker side limiting swing arm to swing towards the second limiting pin, at the moment, the first tension spring is required to be arranged, the circuit breaker indicating shaft and the circuit breaker indicating shaft connecting lever are arranged above the circuit breaker side limiting swing arm, meanwhile, the opening indicating position of the circuit breaker is arranged at the upper part, the closing indicating position is arranged at the lower part, and the circuit breaker indicating shaft connecting lever is arranged at the opening indicating position and the closing indicating position at the left side.
The embodiment of the switching equipment comprises a circuit breaker, an isolation knife and a switching-off single-shaft operation limiting structure, wherein the circuit breaker is provided with a circuit breaker operating shaft, the isolation knife is provided with an isolation knife operating shaft, and the switching-off single-shaft operation limiting structure is the same as that in any one of the specific embodiments 1-6 of the switching-off single-shaft operation limiting structure, and is not repeated herein.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. The opening and closing single-shaft operation limiting structure is characterized by comprising a rack, wherein an opening and closing single shaft and an opening and closing indicating shaft are rotatably assembled on the rack;
the switching-on and switching-off indicating shaft comprises a circuit breaker indicating shaft and an isolating knife indicating shaft; the switching-on and switching-off indicating shaft is provided with a switching-on position corresponding to the switching-on state of the corresponding circuit breaker or isolating knife and a switching-off position corresponding to the switching-off state of the corresponding circuit breaker or isolating knife;
the machine frame is also rotatably provided with a breaker side limiting swing arm and an isolation knife side limiting swing arm; the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are respectively provided with a closing swing limit and an opening swing limit;
elastic reset pieces are arranged between the breaker side limiting swing arm and the isolation knife side limiting swing arm and the rack;
a circuit breaker side elastic driving piece is arranged between the circuit breaker side limiting swing arm and the circuit breaker indicating shaft;
an isolation knife side elastic driving piece is arranged between the isolation knife side limiting swing arm and the isolation knife indicating shaft;
the elastic reset piece is used for applying an acting force swinging towards a closing swing limit to the corresponding breaker side limiting swing arm and applying an acting force swinging towards a separating swing limit to the corresponding isolating knife side limiting swing arm;
the circuit breaker side elastic driving piece is used for enabling the circuit breaker side limiting swing arm to be in a closing swing limit together with the elastic resetting piece on the corresponding side when the circuit breaker indicating shaft is in a closing position; when the breaker indicates that the axial opening position moves, the breaker indicating shaft is driven to overcome the acting force of the elastic reset piece at the corresponding side, so that the side limiting swing arm of the breaker has the tendency of moving towards the opening swing limit;
the isolation knife side elastic driving piece is used for enabling the isolation knife side limiting swing arm to be in the opening swing limit together with the elastic reset piece on the corresponding side when the isolation knife indicating shaft is in the opening position; when the isolating knife indicates axial switching-on position movement, the isolating knife is used for overcoming the acting force of the elastic reset piece at the corresponding side under the driving of the isolating knife indicating shaft, so that the isolating knife side limiting swing arm has the tendency of moving towards the switching-on swing limit;
the opening and closing single shaft is a self-resetting shaft, and an isolating knife switch-off position, a circuit breaker switch-off position, an initial position, an isolating knife switch-on position and a circuit breaker switch-on position are arranged from one side swing limit to the other side swing limit; the disconnecting position of the isolating knife and the switching-on position of the circuit breaker respectively correspond to the swing limits on two sides of the switching-on and switching-off single shaft;
the opening and closing single shaft is provided with an opening stopping arm and a closing stopping arm;
the opening and stopping arm is used for being matched with the circuit breaker side limiting swing arm, and when the circuit breaker side limiting swing arm is positioned at the opening swing limit, the opening and stopping arm is avoided so that the opening and closing single shaft can move to the opening and closing position of the isolation knife from the initial position; when the circuit breaker side limiting swing arm is positioned at a closing swing limit and the opening and closing single shaft moves from an initial position to an isolation knife opening position, the circuit breaker side limiting swing arm is used for being blocked on a swing path of the opening and closing blocking arm so as to limit the opening and closing single shaft at the opening and closing position of the circuit breaker;
the closing stopping arm is used for being matched with the isolating knife side limiting swing arm, and when the isolating knife side limiting swing arm is positioned at a closing swing limit, the closing stopping arm is avoided so that the opening and closing single shaft can move to a circuit breaker opening and closing position from an initial position; when the isolation knife side limiting swing arm is positioned at the opening swing limit and the opening and closing single shaft moves from the initial position to the closing position of the circuit breaker, the isolation knife side limiting swing arm is used for being blocked on a swing path of the closing blocking arm so as to limit the opening and closing single shaft at the opening and closing position of the isolation knife;
the breaker rotates 30 degrees of separating brake counterclockwise and 90 degrees of closing brake clockwise on the single opening and closing shaft, and the isolation knife rotates 90 degrees of separating brake counterclockwise and 30 degrees of closing brake clockwise on the single opening and closing shaft.
2. A single-shaft operation limiting structure for switching-on and switching-off according to claim 1, wherein the closing swing limit and the opening swing limit of the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are formed by limiting pins on a rack.
3. A switch-off and switch-on single-shaft operation limiting structure according to claim 1 or 2, wherein a circuit breaker indicating shaft crank arm is arranged on the circuit breaker indicating shaft, the circuit breaker side elastic driving member is an extension spring or a compression spring, and the extension spring or the compression spring is connected between the circuit breaker side limiting swing arm and the circuit breaker indicating shaft crank arm.
4. A switch-on/switch-off single-shaft operation limiting structure according to claim 1 or 2, wherein an isolating knife indicating shaft crank arm is arranged on the isolating knife indicating shaft, the isolating knife side elastic driving piece is an extension spring or a compression spring, and the extension spring or the compression spring is connected between the isolating knife side limiting swing arm and the isolating knife indicating shaft crank arm.
5. A single-shaft operation limiting structure for opening and closing according to claim 1 or 2, wherein the frame comprises a front side plate and a rear side plate;
the circuit breaker side limiting swing arm, the isolation knife side limiting swing arm, the brake separating blocking arm and the switch-on blocking arm are all arranged between the front side plate and the rear side plate.
6. The switch device comprises a circuit breaker, an isolation knife and a switching-off and switching-on single-shaft operation limiting structure, wherein the circuit breaker is provided with a circuit breaker operating shaft, and the isolation knife is provided with an isolation knife operating shaft; the switching-off and switching-on single-shaft operation limiting structure is characterized by comprising a rack, wherein a switching-off and switching-on single shaft and a switching-off and switching-on indicating shaft are rotatably assembled on the rack;
the opening and closing single shaft is used for driving the circuit breaker operating shaft and the isolation knife operating shaft to rotate;
the switching-on and switching-off indicating shaft comprises a circuit breaker indicating shaft and an isolating knife indicating shaft; the switching-on and switching-off indicating shaft is provided with a switching-on position corresponding to the switching-on state of the corresponding circuit breaker or isolating knife and a switching-off position corresponding to the switching-off state of the corresponding circuit breaker or isolating knife;
the machine frame is also rotatably provided with a breaker side limiting swing arm and an isolation knife side limiting swing arm; the circuit breaker side limiting swing arm and the isolation knife side limiting swing arm are respectively provided with a closing swing limit and an opening swing limit;
elastic reset pieces are arranged between the breaker side limiting swing arm and the frame and between the isolation knife side limiting swing arm and the frame;
a circuit breaker side elastic driving piece is arranged between the circuit breaker side limiting swing arm and the circuit breaker indicating shaft;
an isolation knife side elastic driving piece is arranged between the isolation knife side limiting swing arm and the isolation knife indicating shaft;
the elastic reset piece is used for applying an acting force swinging towards a closing swing limit to the corresponding circuit breaker side limiting swing arm and applying an acting force swinging towards an opening swing limit to the corresponding isolating knife side limiting swing arm;
the circuit breaker side elastic driving piece is used for enabling the circuit breaker side limiting swing arm to be in a closing swing limit together with the elastic resetting piece on the corresponding side when the circuit breaker indicating shaft is in a closing position; when the breaker indicates that the axial opening position moves, the breaker indicating shaft is driven to overcome the acting force of the elastic reset piece at the corresponding side, so that the side limiting swing arm of the breaker has the tendency of moving towards the opening swing limit;
the isolation knife side elastic driving piece is used for enabling the isolation knife side limiting swing arm to be in the opening swing limit together with the elastic reset piece on the corresponding side when the isolation knife indicating shaft is in the opening position; when the isolating knife indicates axial switching-on position movement, the isolating knife is used for overcoming the acting force of the elastic reset piece at the corresponding side under the driving of the isolating knife indicating shaft, so that the isolating knife side limiting swing arm has the tendency of moving towards the switching-on swing limit;
the opening and closing single shaft is a self-resetting shaft, and an isolating knife switch-off position, a circuit breaker switch-off position, an initial position, an isolating knife switch-on position and a circuit breaker switch-on position are arranged from one side swing limit to the other side swing limit; the disconnecting position of the isolating knife and the switching-on position of the circuit breaker respectively correspond to the swing limits on two sides of the switching-on and switching-off single shaft;
the opening and closing single shaft is provided with an opening stopping arm and a closing stopping arm;
the opening and stopping arm is used for being matched with the circuit breaker side limiting swing arm, and when the circuit breaker side limiting swing arm is positioned at the opening swing limit, the opening and stopping arm is avoided so that the opening and closing single shaft can move to the opening and closing position of the isolation knife from the initial position; when the circuit breaker side limiting swing arm is positioned at a closing swing limit and the opening and closing single shaft moves from an initial position to an isolation knife opening position, the circuit breaker side limiting swing arm is used for being blocked on a swing path of the opening and closing blocking arm so as to limit the opening and closing single shaft at the opening and closing position of the circuit breaker;
the closing stopping arm is used for being matched with the isolating knife side limiting swing arm, and when the isolating knife side limiting swing arm is positioned at a closing swing limit, the closing stopping arm is avoided so that the opening and closing single shaft can move to a circuit breaker opening and closing position from an initial position; when the isolation knife side limiting swing arm is positioned at the opening swing limit and the opening and closing single shaft moves from the initial position to the closing position of the circuit breaker, the isolation knife side limiting swing arm is used for being blocked on a swing path of the closing blocking arm so as to limit the opening and closing single shaft at the opening and closing position of the isolation knife;
the breaker rotates 30 degrees of separating brake counterclockwise and 90 degrees of closing brake clockwise on the single opening and closing shaft, and the isolation knife rotates 90 degrees of separating brake counterclockwise and 30 degrees of closing brake clockwise on the single opening and closing shaft.
7. The switchgear as claimed in claim 6, wherein the closing swing limit and the opening swing limit of the breaker-side limit swing arm and the isolation-blade-side limit swing arm are formed by limit pins on the frame.
8. The switch equipment according to claim 6 or 7, wherein the circuit breaker indicating shaft is provided with a circuit breaker indicating shaft crank, the circuit breaker side elastic driving member is an extension spring or a compression spring, and the extension spring or the compression spring is connected between the circuit breaker side limiting swing arm and the circuit breaker indicating shaft crank.
9. The switchgear as claimed in claim 6 or 7, wherein the isolating blade indicating shaft is provided with an isolating blade indicating shaft crank arm, the isolating blade side elastic driving member is an extension spring or a compression spring, and the extension spring or the compression spring is connected between the isolating blade side limit swing arm and the isolating blade indicating shaft crank arm.
10. The switchgear device according to claim 6 or 7, characterized in that said frame comprises a front side plate and a rear side plate;
the circuit breaker side limiting swing arm, the isolation knife side limiting swing arm, the brake separating blocking arm and the switch-on blocking arm are all arranged between the front side plate and the rear side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010372552.0A CN111681903B (en) | 2020-05-06 | 2020-05-06 | Switching-off and switching-on single-shaft operation limiting structure and switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010372552.0A CN111681903B (en) | 2020-05-06 | 2020-05-06 | Switching-off and switching-on single-shaft operation limiting structure and switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111681903A CN111681903A (en) | 2020-09-18 |
| CN111681903B true CN111681903B (en) | 2022-08-12 |
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| CN202010372552.0A Active CN111681903B (en) | 2020-05-06 | 2020-05-06 | Switching-off and switching-on single-shaft operation limiting structure and switching device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10219022B3 (en) * | 2002-04-27 | 2004-03-18 | Moeller Gmbh | Contact arrangement for current-limiting circuit breakers |
| CN102592859A (en) * | 2012-02-08 | 2012-07-18 | 胡光福 | Manual opening and closing device for operation mechanism |
| CN108320946A (en) * | 2018-01-09 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of switchgear and its disconnecting switch and breaker interlock |
| CN208722802U (en) * | 2018-08-30 | 2019-04-09 | 许昌合泰机械设备有限公司 | On-pole switch breaker and isolation knife integral type dependent power operating mechanism |
| CN209328789U (en) * | 2019-01-10 | 2019-08-30 | 河南华盛隆源电气有限公司 | A kind of breaker of external isolation |
-
2020
- 2020-05-06 CN CN202010372552.0A patent/CN111681903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10219022B3 (en) * | 2002-04-27 | 2004-03-18 | Moeller Gmbh | Contact arrangement for current-limiting circuit breakers |
| CN102592859A (en) * | 2012-02-08 | 2012-07-18 | 胡光福 | Manual opening and closing device for operation mechanism |
| CN108320946A (en) * | 2018-01-09 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of switchgear and its disconnecting switch and breaker interlock |
| CN208722802U (en) * | 2018-08-30 | 2019-04-09 | 许昌合泰机械设备有限公司 | On-pole switch breaker and isolation knife integral type dependent power operating mechanism |
| CN209328789U (en) * | 2019-01-10 | 2019-08-30 | 河南华盛隆源电气有限公司 | A kind of breaker of external isolation |
Also Published As
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|---|---|
| CN111681903A (en) | 2020-09-18 |
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