CN114613641B - Spring operating mechanism and circuit breaker - Google Patents
Spring operating mechanism and circuit breaker Download PDFInfo
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- CN114613641B CN114613641B CN202111591963.XA CN202111591963A CN114613641B CN 114613641 B CN114613641 B CN 114613641B CN 202111591963 A CN202111591963 A CN 202111591963A CN 114613641 B CN114613641 B CN 114613641B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 152
- 238000004146 energy storage Methods 0.000 claims abstract description 295
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 210000004907 gland Anatomy 0.000 claims description 15
- 230000007306 turnover Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 description 27
- 230000009471 action Effects 0.000 description 17
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000005499 meniscus Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/42—Driving mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model belongs to the field of high-voltage switch equipment, and particularly relates to a spring operating mechanism and a circuit breaker, wherein the circuit breaker comprises a three-phase arc extinguishing chamber and the spring operating mechanism, an energy storage shaft is arranged in a mechanism box of the spring operating mechanism, and a cam is arranged on the energy storage shaft; the spring operating mechanism further comprises an energy storage indication board which faces to the direction perpendicular to the energy storage shaft, an indication board transmission mechanism is arranged between the energy storage indication board and the cam, the spring operating mechanism further comprises a micro switch used for detecting the energy storage state to output corresponding electric signals, the cam comprises an energy storage indication cam and an energy storage state detection cam, the power input end of the indication board transmission mechanism is a swinging rod, the swinging rod is matched with the energy storage indication cam, the contact of the micro switch corresponds to the energy storage state detection cam and is used for outputting energy storage state signals, so that a force transmission path between the energy storage shaft and the micro switch is not influenced by the force transmission path between the energy storage shaft and the state indication board, and the spring operating mechanism is guaranteed to have reliable working performance.
Description
Technical Field
The utility model belongs to the field of high-voltage switch equipment, and particularly relates to a spring operating mechanism and a circuit breaker.
Background
The circuit breaker comprises an arc extinguishing chamber and an operating mechanism in transmission connection with the arc extinguishing chamber, as shown in fig. 1, the operating mechanism 1 is in transmission connection with an operating rod of the arc extinguishing chamber 2 to drive the arc extinguishing chamber 2 to perform switching-on and switching-off actions. The spring operating mechanism is a common operating mechanism for a circuit breaker, and the spring operating mechanism stores energy before acting, so the spring operating mechanism is provided with an energy storage state display mechanism 3 for displaying the energy storage state. As shown in fig. 1, the axis of the energy storage state display mechanism 3 in the conventional spring operating mechanism is generally arranged axially according to the main shaft of the operating mechanism, so that the arrangement of the transmission structure can be facilitated, that is, the energy storage state display mechanism 3 is often arranged at the side. In actual circuit breaker products, some types of circuit breakers will be provided with spring operating mechanisms for each phase of arc-extinguishing chambers 2, as shown in fig. 2, the spring operating mechanisms are arranged in parallel according to the arrangement mode of each phase of arc-extinguishing chambers 2, so that the energy storage state display mechanism 3 of the operating mechanism 1 of at least two phases of arc-extinguishing chambers 2 is shielded and is inconvenient to observe.
In this regard, the prior art overcomes the above-described problems by changing the setting position of the stored energy state display mechanism. The spring operating mechanism of the three-phase circuit breaker is disclosed in Chinese patent application publication No. CN108231449A and application publication No. 2018, 06 and 29, and the operating mechanism is provided with an energy storage shaft, an energy storage indicator is arranged on the side surface of the operating mechanism, which is opposite to the circuit breaker, and a cam is arranged on the energy storage shaft for driving the energy storage indicator to act. Meanwhile, the operating mechanism is further provided with an auxiliary switch, and the auxiliary switch can be used as an opening and closing state detection device to output an opening and closing signal and also can be used as an energy storage state detection device to output an energy storage signal. The transmission mechanism between the energy storage shaft and the energy storage indication board is provided with a trigger mechanism which can act along with the transmission mechanism, the energy storage shaft can drive the trigger mechanism to act through the transmission mechanism between the energy storage shaft and the energy storage indication board to trigger the auxiliary switch to send a power-off signal when the energy storage shaft completes the energy storage action, and as the quantity of signals required by the switching-on and switching-off control of the circuit breaker is more, the energy storage only needs to acquire a single signal, so that the prior art also has a scheme of dividing the switching-on and switching-off state detection device from the energy storage state detection device into two sets of output, the switching-on and switching-off state detection device adopts the auxiliary switch corresponding to the main transmission shaft (namely the output shaft in the patent), and the energy storage state detection device adopts the travel switch corresponding to the indication board transmission shaft. In addition, similar to the above-mentioned patent, the Chinese patent publication number CN214542091U and publication date 2021, 10 and 29 disclose a spring operating mechanism, and the energy storage indicator of the spring operating mechanism is also arranged on the side surface of the operating mechanism facing away from the arc extinguishing chamber, and a transmission mechanism is arranged between the energy storage shaft and the energy storage indicator, the energy storage indicator is arranged in a hinged mode, and the transmission mechanism is in a connecting rod mode, so that the connecting rod mechanism can be formed to realize the overturning of the energy storage indicator. A micro-switch shaft is arranged in a transmission path between the energy storage shaft and the state indication board and is used as an indication board transmission shaft, and a transmission mechanism between the energy storage shaft and the energy storage indication board drives the micro-switch shaft to act so that the micro-switch sends out a control signal to realize the power-off of the energy storage motor.
The spring operating mechanism in the prior art realizes the non-shielding setting of the energy storage indication plate through the indication plate transmission shaft, so that the operation personnel can observe conveniently, but the energy storage state detection device also needs to be realized through the corresponding indication plate transmission shaft, the transmission path is longer, and once the transmission structure of any link between the energy storage shaft and the energy storage indication plate fails, the energy storage state detection device can not be triggered, and the reliability of the operating mechanism is affected.
Disclosure of Invention
The utility model aims to provide a spring operating mechanism which is used for solving the problems of long transmission path and poor reliability between an energy storage state detection device and an energy storage shaft in the prior art.
In order to achieve the above purpose, the technical scheme of the spring operating mechanism provided by the utility model is as follows:
a spring operating mechanism comprises a mechanism box, wherein an energy storage shaft is arranged in the mechanism box, and a cam is arranged on the energy storage shaft; the spring operating mechanism further comprises an energy storage indication board, the orientation of the energy storage indication board is perpendicular to the axis of the energy storage shaft, an indication board transmission mechanism for driving the energy storage indication board to act is arranged between the energy storage indication board and the cam, and the indication board transmission mechanism comprises a swing rod hinged on the mechanism box to swing under the driving of the cam; the spring operating mechanism further comprises an energy storage state detection device for detecting an energy storage state to output corresponding electric signals, the energy storage indication board is hinged on the mechanism box, and the hinge axis is parallel to the energy storage shaft; the cam comprises an energy storage indicating cam and an energy storage state detecting cam which are arranged side by side along the axial direction of the energy storage shaft, the indication board transmission mechanism is a link mechanism connected between the swing rod and the energy storage indicating board, and the swing rod is matched with the energy storage indicating cam; the energy storage state detection device is a micro switch, and the contact of the micro switch corresponds to the energy storage state detection cam and is used for outputting an energy storage state signal.
The beneficial effects are that: the orientation of energy storage sign is perpendicular with the energy storage axle, so make the energy storage sign can set up in the one side of mechanism case dorsad explosion chamber, be convenient for the staff observe the energy storage sign, and set up the energy storage indication drive mechanism of connecting rod structure between energy storage axle and the energy storage sign, make the energy storage sign can be by the synchronous drive action of energy storage axle, meanwhile, directly set up on the energy storage axle with micro-gap switch complex energy storage state detection cam, energy storage state detection cam is independent for with sign drive mechanism complex energy storage indication cam, when making the transmission between energy storage axle and the micro-gap switch trigger structure's the transmission route as short as possible, still independent for the transmission route between energy storage axle and the energy storage sign, the transmission route is short makes the fault rate of spring operating mechanism lower simultaneously, the transmission route between energy storage axle and the micro-gap switch is not influenced by the transmission route between energy storage axle and the state sign, guarantee that spring operating mechanism has reliable working property.
As a further improvement, the energy storage shaft is coaxially provided with a cam installation shaft section, and the cam installation shaft section is provided with two cam installation positions for respectively fixedly installing an energy storage indication cam and an energy storage state detection cam.
The beneficial effects are that: the cam installation shaft section is arranged, so that the installation of the energy storage indication cam and the energy storage state detection cam which are simultaneously arranged can be met, and the installation of the two cams can be conveniently realized without too much change of the original structure.
As a further improvement, the cam installation shaft section is provided with a shaft shoulder, the energy storage indication cam and the energy storage state detection cam are sequentially sleeved on the cam installation shaft section in a stopping way and are matched with the shaft shoulder in a stopping way, and the tail end of the cam installation shaft section is provided with a shaft end limiting structure for preventing the energy storage indication cam and the energy storage state detection cam from falling out.
The beneficial effects are that: the shaft shoulder is arranged at the cam installation shaft end, and no matter whether the energy storage indicating cam and the energy storage state detecting cam are of an integrated type or a split type, the energy storage indicating cam and the energy storage state detecting cam can be installed on the cam installation shaft section through the stop fit of the shaft shoulder, namely, the integral fixation of the two cams is realized, and the dismounting is convenient.
As a further improvement, the shaft end limiting structure is a gland fixed on the end face of the tail end of the cam mounting shaft section through more than two screws, and the gland is provided with a pressing surface for pressing and fixing the energy storage indicating cam and the energy storage state detecting cam on the shaft shoulder.
The beneficial effects are that: the shaft end limiting structure adopts a gland type structure, the gland type structure can realize reliable fixation through more than two screws, meanwhile, each screw cannot be coaxial with the energy storage shaft, so that the fixation effect of the screw cannot be influenced by rotation of the cam installation shaft section, and the cam is reliably fixed on the cam installation shaft section.
As a further improvement, the indication board transmission mechanism further comprises a middle swinging rod which is installed on the mechanism box through a middle hinge, a first connecting rod is hinged between one end of the middle swinging rod and the swinging rod, and a second connecting rod is hinged between the other end of the middle swinging rod and the energy storage indication board, so that the turnover angle requirement of the energy storage indication board is met.
The beneficial effects are that: the middle swinging rod is arranged between the swinging rod and the state indication board, and the action can be enlarged or reduced in the action transmission process by designing the length of the middle swinging rod and the hinged positions of the first connecting rod and the second connecting rod on the middle swinging rod, so that the indication board transmission mechanism is ensured to provide a driving action with enough travel for the energy storage indication board.
In order to achieve the above purpose, the technical scheme of the circuit breaker provided by the utility model is as follows:
the circuit breaker comprises three-phase arc-extinguishing chambers and spring operating mechanisms which are respectively and correspondingly arranged with the arc-extinguishing chambers, wherein the three-phase arc-extinguishing chambers are arranged side by side, the spring operating mechanisms are arranged on the same side of the corresponding arc-extinguishing chambers, each spring operating mechanism comprises a mechanism box, an energy storage shaft is arranged in the mechanism box, and a cam is arranged on the energy storage shaft; the spring operating mechanism further comprises an energy storage indication board, the orientation of the energy storage indication board is perpendicular to the axis of the energy storage shaft, an indication board transmission mechanism for driving the energy storage indication board to act is arranged between the energy storage indication board and the cam, and the indication board transmission mechanism comprises a swing rod hinged on the mechanism box to swing under the driving of the cam; the spring operating mechanism further comprises an energy storage state detection device for detecting an energy storage state to output corresponding electric signals, the energy storage indication board is hinged on the mechanism box, and the hinge axis is parallel to the energy storage shaft; the cam comprises an energy storage indicating cam and an energy storage state detecting cam which are arranged side by side along the axial direction of the energy storage shaft, the indication board transmission mechanism is a link mechanism connected between the swing rod and the energy storage indicating board, and the swing rod is matched with the energy storage indicating cam; the energy storage state detection device is a micro switch, and the contact of the micro switch corresponds to the energy storage state detection cam and is used for outputting an energy storage state signal.
The beneficial effects are that: the orientation of energy storage sign is perpendicular with the energy storage axle, so make the energy storage sign can set up in the one side of mechanism case dorsad explosion chamber, be convenient for the staff observe the energy storage sign, and set up the energy storage indication drive mechanism of connecting rod structure between energy storage axle and the energy storage sign, make the energy storage sign can be by the synchronous drive action of energy storage axle, meanwhile, directly set up on the energy storage axle with micro-gap switch complex energy storage state detection cam, energy storage state detection cam is independent for with sign drive mechanism complex energy storage indication cam, when making the transmission between energy storage axle and the micro-gap switch trigger structure's the transmission route as short as possible, still independent for the transmission route between energy storage axle and the energy storage sign, the transmission route is short makes the fault rate of spring operating mechanism lower simultaneously, the transmission route between energy storage axle and the micro-gap switch is not influenced by the transmission route between energy storage axle and the state sign, guarantee that spring operating mechanism has reliable working property.
As a further improvement, the energy storage shaft is coaxially provided with a cam installation shaft section, and the cam installation shaft section is provided with two cam installation positions for respectively fixedly installing an energy storage indication cam and an energy storage state detection cam.
The beneficial effects are that: the cam installation shaft section is arranged, so that the installation of the energy storage indication cam and the energy storage state detection cam which are simultaneously arranged can be met, and the installation of the two cams can be conveniently realized without too much change of the original structure.
As a further improvement, the cam installation shaft section is provided with a shaft shoulder, the energy storage indication cam and the energy storage state detection cam are sequentially sleeved on the cam installation shaft section in a stopping way and are matched with the shaft shoulder in a stopping way, and the tail end of the cam installation shaft section is provided with a shaft end limiting structure for preventing the energy storage indication cam and the energy storage state detection cam from falling out.
The beneficial effects are that: the shaft shoulder is arranged at the cam installation shaft end, and no matter whether the energy storage indicating cam and the energy storage state detecting cam are of an integrated type or a split type, the energy storage indicating cam and the energy storage state detecting cam can be installed on the cam installation shaft section through the stop fit of the shaft shoulder, namely, the integral fixation of the two cams is realized, and the dismounting is convenient.
As a further improvement, the shaft end limiting structure is a gland fixed on the end face of the tail end of the cam mounting shaft section through more than two screws, and the gland is provided with a pressing surface for pressing and fixing the energy storage indicating cam and the energy storage state detecting cam on the shaft shoulder.
The beneficial effects are that: the shaft end limiting structure adopts a gland type structure, the gland type structure can realize reliable fixation through more than two screws, meanwhile, each screw cannot be coaxial with the energy storage shaft, so that the fixation effect of the screw cannot be influenced by rotation of the cam installation shaft section, and the cam is reliably fixed on the cam installation shaft section.
As a further improvement, the indication board transmission mechanism further comprises a middle swinging rod which is installed on the mechanism box through a middle hinge, a first connecting rod is hinged between one end of the middle swinging rod and the swinging rod, and a second connecting rod is hinged between the other end of the middle swinging rod and the energy storage indication board, so that the turnover angle requirement of the energy storage indication board is met.
The beneficial effects are that: the middle swinging rod is arranged between the swinging rod and the state indication board, and the action can be enlarged or reduced in the action transmission process by designing the length of the middle swinging rod and the hinged positions of the first connecting rod and the second connecting rod on the middle swinging rod, so that the indication board transmission mechanism is ensured to provide a driving action with enough travel for the energy storage indication board.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker in the prior art;
fig. 2 is a schematic structural diagram of an energy storage state display mechanism of an operating mechanism of a circuit breaker in the prior art;
fig. 3 is a schematic structural view of embodiment 1 of the circuit breaker of the present utility model;
FIG. 4 is a schematic diagram of the transmission mechanism between the energy storage shaft and the energy storage sign and the micro switch of the spring operated mechanism of the embodiment 1 of the circuit breaker;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic view of the structure of a camshaft mounting segment of the spring operated mechanism of embodiment 1 of the circuit breaker of the present utility model;
fig. 7 is a schematic view of the structure of the energy storage indicating cam of the cam structure of the spring operated mechanism of embodiment 1 of the circuit breaker according to the present utility model;
fig. 8 is a schematic diagram showing the structure of the stored energy state detecting cam of the cam structure of the spring operating mechanism of embodiment 1 of the circuit breaker according to the present utility model;
FIG. 9 is a right side view of the section of FIG. 4;
FIG. 10 is a left side view of FIG. 4;
fig. 11 is a schematic structural view of embodiment 2 of the circuit breaker of the present utility model;
FIG. 12 is an enlarged view of a portion of FIG. 11;
reference numerals illustrate:
1. an operating mechanism; 2. an arc extinguishing chamber; 3. an energy storage state display mechanism; 4. a phase A arc extinguishing chamber; 5. a B-phase arc extinguishing chamber; 6. a C-phase arc extinguishing chamber; 7. a spring operating mechanism; 8. a mechanism box; 9. an energy storage wheel; 10. an energy storage shaft; 11. an energy storage indication board; 12. a cam mounting shaft section; 13. a wall plate; 14. a butt joint section; 15. a mounting section; 16. an energy storage indicating cam; 17. an energy storage state detection cam; 18. an indication flange; 19. a first mounting hole; 20. detecting a convex rim; 21. a second mounting hole; 22. a micro-switch; 23. a microswitch mounting block; 24. a meniscus plate; 25. a middle swing lever; 26. a first link; 27. a second link; 28. a rotating shaft; 29. the indication board mounting frame; 30. a hinge shaft; 31. a spacer bush; 32. a threaded hole; 33. a gland; 34. a torsion spring; 35. and (5) a screw cap.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model 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 utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
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. Moreover, terms such as "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 one … …" or the like is not excluded from a process, method, or the like that includes the element.
In the description of the present utility model, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; either directly, indirectly through intermediaries, or in communication with the interior of the two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "provided" may be interpreted broadly, and for example, an object "provided" may be a part of a body, may be separately disposed from the body, and may be connected to the body, where the connection may be a detachable connection or an undetachable connection. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art in specific cases.
The present utility model is described in further detail below with reference to examples.
Specific embodiment 1 of the circuit breaker provided by the utility model:
the structure of the circuit breaker provided in this embodiment is shown in fig. 3, and includes an arc-extinguishing chamber and a spring operating mechanism, specifically, the arc-extinguishing chamber includes an a-phase arc-extinguishing chamber 4, a B-phase arc-extinguishing chamber 5 and a C-phase arc-extinguishing chamber 6, each phase arc-extinguishing chamber is correspondingly configured with a spring operating mechanism 7, and a power output shaft of each spring operating mechanism 7 is in transmission connection with an operating rod of the corresponding arc-extinguishing chamber to drive the arc-extinguishing chamber to perform switching-on/switching-off actions.
Specifically, the spring operating mechanism 7 comprises a mechanism box 8, an energy storage wheel 9 is arranged in the mechanism box 8, the energy storage wheel 9 is arranged in the mechanism box 8 through an energy storage shaft 10, and in order to display the energy storage state of the spring operating mechanism 7, the spring operating mechanism is further provided with an energy storage indication board 11. As shown in fig. 4 and 5, in order to synchronously drive the energy storage indication board 11 to act to indicate the corresponding state when the energy storage shaft 10 rotates, a camshaft mounting section 12 is abutted on the energy storage shaft 10, and the camshaft mounting section 12 is rotatably mounted on a wall plate 13 of the mechanism box 8 and is in rotation-stopping transmission connection with the energy storage shaft 10. The drive connection of the camshaft mounting segment 12 to the energy storage shaft 10 can be either a direct or an indirect drive connection.
With respect to the specific structure of the camshaft mounting segment 12, as shown in fig. 6, the camshaft mounting segment 12 includes a butt-joint segment 14, the butt-joint segment 14 has a molded surface, so that the camshaft mounting segment can be in rotation-proof driving connection with the energy storage shaft 10, the camshaft mounting segment 12 also has a mounting segment 15, the mounting segment 15 also has a molded surface, as shown in fig. 4 and 5, a cam structure is mounted on the mounting segment, the cam structure includes two separated parts, one part is an energy storage indicating cam 16, and the other part is an energy storage state detecting cam 17, as shown in fig. 7, the energy storage indicating cam has an indicating flange 18 and a first mounting hole 19 of a long waist shape, as shown in fig. 8, the energy storage state detecting cam 17 has a detecting flange 20 and a second mounting hole 21 of a long waist shape, the energy storage indicating cam 16 and the energy storage state detecting cam 17 are rotation-proof mounted on the mounting segment 15 of the camshaft mounting segment 12 through the first mounting hole 19 and the second mounting hole 21, and the energy storage indicating cam 16 abuts against a shoulder on the camshaft mounting segment 12.
In particular, a proper interval is ensured between the energy storage indicating cam 16 and the energy storage state detecting cam 17, and a spacer 31 is further arranged between the energy storage indicating cam 16 and the energy storage state detecting cam 17 during assembly, as shown in fig. 5. In order to prevent the cam structure from being separated from the mounting section 15, as shown in fig. 6, a threaded hole 32 is formed in the end face of the camshaft mounting section 12, and during assembly, a screw is screwed into the threaded hole 32 to fix a stopper at the end of the camshaft mounting section 12 to form a shaft end limit structure, so as to prevent the cam structure from slipping. In this embodiment, the shaft end limiting structure is an annular gland 33, and the gland 33 has a pressing surface for pressing the energy storage state detecting cam 17. In other embodiments, the shaft end limiting structure may be any component that can be fixed to the end of the camshaft mounting segment by a screw and has a pressing surface for pressing and fixing the energy storage indicating cam 16 and the energy storage state detecting cam 17 to the shaft shoulder.
Specifically, a sign driving mechanism is arranged between the energy storage indication cam 16 and the energy storage indication sign 11, the sign driving mechanism comprises a meniscus plate 24 hinged on the wall plate 13 and a middle swinging rod 25, the meniscus plate 24 is used as a swinging rod to be matched with the indication convex rim 18 of the energy storage indication cam 16, a torsion spring 34 is arranged on a hinge shaft for hinging the meniscus plate 24 on the wall plate 13, and the torsion spring 34 applies thrust towards the energy storage indication cam 16 to the meniscus plate 24. The middle part of the middle swinging rod 25 is hinged on the wall plate 13, a first connecting rod 26 is hinged between the lower end of the middle swinging rod and the lower end of the meniscus plate 24, and a second connecting rod 27 is hinged between the upper end of the middle swinging rod and the energy storage indication board 11. Specifically, as shown in fig. 9, the energy storage indicator 11 is hinged on the energy storage indicator mounting frame 29 through a rotating shaft 28, a hinge shaft 30 is arranged at the upper part, and the second connecting rod 27 is rotatably connected with the hinge shaft 30. As shown in fig. 5 and 10, the two mutually perpendicular panels of the energy storage sign 11 are respectively provided with an 'un-stored energy' and an 'stored energy' word structure.
The wall plate 13 is provided with an energy storage state detection device, in particular a micro switch 22, for detecting the energy storage state of the energy storage mechanism and outputting a corresponding electrical signal, so that a corresponding control system disconnects an electrical circuit of a motor for providing power for the energy storage wheel 9. The energy storage state detection cam 17 is used for being matched with a micro switch 22 fixed on the wall plate 13, and the micro switch 22 is specifically installed on the wall plate 13 through a micro switch installation block 23. The energy storage indication cam 16 is used for driving the energy storage indication board 11 to act.
When the energy storage device works, the corresponding motor drives the energy storage wheel 9 and the energy storage shaft 10 to rotate anticlockwise along the main viewing direction of fig. 4, after the indication flange 18 moves to be separated from the cooperation with the meniscus plate 24, the meniscus plate 24 swings rightwards under the drive of the torsion spring 34, the middle swinging rod 25 is pulled to rotate anticlockwise around the hinge point through the first connecting rod 26, the upper end of the middle swinging rod 25 pushes the energy storage indication board 11 to rotate anticlockwise around the rotating shaft 28 through the second connecting rod 27, and one face of the word-like structure with the energy storage indication board 11, with the energy stored, leaks out of the display window of the indication board mounting frame 29, and at the moment, the energy storage mechanism completes energy storage. Meanwhile, the energy storage state detection cam 17 is disconnected from the micro switch 22 through the detection flange 20, and the corresponding control system cuts off a power supply loop of the motor to prevent the motor from continuing to act after the energy storage mechanism finishes energy storage. After the energy storage is finished, the switching-on operation can be carried out, in the switching-on process, the cam structure continuously rotates anticlockwise along with the energy storage shaft 10, the actions are repeated, and the energy storage indication board 11 is enabled to finish the state indication conversion from the 'stored energy' state to the 'not stored energy' state through the indication flange 18. The closing action is completed, the energy of the closing spring of the mechanism is released, and the mechanism is in an 'non-energy-storage' state. Meanwhile, after closing, the detection flange 20 triggers the micro switch 22, so that the energy storage motor loop is conducted again, and the next energy storage action can be continuously completed.
The embodiment 2 of the circuit breaker provided by the utility model is mainly different from the embodiment 1 in that: in embodiment 1, the stored energy indicating cam and the stored energy state detecting cam are of a split type structure. In this embodiment, the energy storage indication cam and the energy storage state detection cam are of an integral structure, and the integral cam structure has an indication flange and a detection flange.
The embodiment 3 of the circuit breaker provided by the utility model is mainly different from the embodiment 1 in that: in embodiment 1, the cam structure is disposed on the cam mounting shaft segment and indirectly on the energy storage shaft. In this embodiment, the axial dimension of the energy storage shaft is lengthened, and the cam structure is directly disposed on the energy storage shaft.
The embodiment 4 of the circuit breaker provided by the utility model is mainly different from the embodiment 1 in that: in embodiment 1, a stopper is fixed to an end surface of the abutting section to stop the cam structure from coming off. In this embodiment, as shown in fig. 11 and 12, a nut 35 is screwed onto the end of the cam mounting shaft section to prevent the cam structure from coming off, and the nut 35 constitutes the shaft end limit structure of the cam mounting shaft section.
The embodiment 5 of the circuit breaker provided by the utility model is mainly different from the embodiment 1 in that: in embodiment 1, the swing rod driven by the indication board transmission mechanism and matched with the indication convex rim of the cam structure is a meniscus plate. In this embodiment, the swing rod is a straight rod.
The embodiment 6 of the circuit breaker provided by the utility model is mainly different from the embodiment 1 in that: in embodiment 1, the sign drive mechanism includes an intermediate swing lever, a first link, and a second link. In this embodiment, according to the structural dimension and the mounted position of each part, under the condition that satisfies the upset angle demand of energy storage sign, directly pass through the connecting rod with meniscus board and energy storage sign and articulate.
Embodiments of the spring actuator of the present utility model:
an embodiment of the spring operating mechanism, namely, the spring operating mechanism described in any one of embodiments 1 to 6 of the circuit breaker, will not be described in detail here.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The spring operating mechanism comprises a mechanism box (8), wherein an energy storage shaft (10) is arranged in the mechanism box (8), and a cam is arranged on the energy storage shaft (10); the spring operating mechanism further comprises an energy storage indication board (11), the direction of the energy storage indication board (11) is perpendicular to the axis of the energy storage shaft (10), an indication board transmission mechanism for driving the energy storage indication board to act is arranged between the energy storage indication board (11) and the cam, and the indication board transmission mechanism comprises a swing rod hinged on the mechanism box to swing under the driving of the cam; the spring operating mechanism further comprises an energy storage state detection device for detecting an energy storage state to output corresponding electric signals, and is characterized in that the energy storage indication board (11) is hinged on the mechanism box (8), and the hinge axis is parallel to the energy storage shaft (10); the cam comprises an energy storage indicating cam (16) and an energy storage state detecting cam (17) which are arranged side by side along the axial direction of the energy storage shaft (10), the indication board transmission mechanism is a link mechanism connected between the swing rod and the energy storage indicating board (11), and the swing rod is matched with the energy storage indicating cam (16); the energy storage state detection device is a micro switch (22), and contacts of the micro switch (22) correspond to the energy storage state detection cam (17) and are used for outputting energy storage state signals.
2. The spring operating mechanism according to claim 1, wherein the energy storage shaft (10) is coaxially provided with a cam mounting shaft section (12), and the cam mounting shaft section (12) is provided with two cam mounting positions for fixedly mounting the energy storage indicating cam and the energy storage state detecting cam respectively.
3. The spring operating mechanism according to claim 2, wherein a shaft shoulder is arranged on the cam mounting shaft section (12), the energy storage indicating cam (16) and the energy storage state detecting cam (17) are sequentially sleeved on the cam mounting shaft section (12) in a rotation stopping manner and are in stop fit with the shaft shoulder, and a shaft end limiting structure for preventing the energy storage indicating cam and the energy storage state detecting cam from falling off is arranged at the tail end of the cam mounting shaft section (12).
4. A spring operating mechanism according to claim 3, wherein the shaft end limiting structure is a gland (33) fixed on the end face of the cam mounting shaft section through more than two screws, and the gland (33) is provided with a pressing surface for pressing and fixing the energy storage indicating cam and the energy storage state detecting cam on the shaft shoulder.
5. The spring operating mechanism according to any one of claims 1-4, wherein the indication board transmission mechanism further comprises a middle swinging rod (25) hinged on the mechanism box through a middle part, a first connecting rod (26) is hinged between one end of the middle swinging rod (25) and the swinging rod, and a second connecting rod (27) is hinged between the other end of the middle swinging rod and the energy storage indication board (11) so as to meet the turnover angle requirement of the energy storage indication board (11).
6. The circuit breaker comprises three-phase arc-extinguishing chambers and spring operating mechanisms (7) which are respectively and correspondingly arranged with the arc-extinguishing chambers, wherein the three-phase arc-extinguishing chambers are arranged side by side, each spring operating mechanism (7) is arranged on the same side of the corresponding arc-extinguishing chamber, each spring operating mechanism (7) comprises a mechanism box (8), an energy storage shaft (10) is arranged in each mechanism box (8), and a cam is arranged on each energy storage shaft (10); the spring operating mechanism further comprises an energy storage indication board (11), the direction of the energy storage indication board (11) is perpendicular to the axis of the energy storage shaft (10), an indication board transmission mechanism for driving the energy storage indication board to act is arranged between the energy storage indication board (11) and the cam, and the indication board transmission mechanism comprises a swing rod hinged on the mechanism box to swing under the driving of the cam; the spring operating mechanism further comprises an energy storage state detection device for detecting an energy storage state to output corresponding electric signals, and is characterized in that the energy storage indication board (11) is hinged on the mechanism box (8), and the hinge axis is parallel to the energy storage shaft (10); the cam comprises an energy storage indicating cam (16) and an energy storage state detecting cam (17) which are arranged side by side along the axial direction of the energy storage shaft (10), the indication board transmission mechanism is a link mechanism connected between the swing rod and the energy storage indicating board (11), and the swing rod is matched with the energy storage indicating cam (16); the energy storage state detection device is a micro switch (22), and contacts of the micro switch (22) correspond to the energy storage state detection cam (17) and are used for outputting energy storage state signals.
7. The circuit breaker according to claim 6, characterized in that the energy storage shaft (10) is coaxially provided with a cam mounting shaft section (12), and the cam mounting shaft section (12) is provided with two cam mounting positions for fixedly mounting the energy storage indicating cam and the energy storage state detecting cam respectively.
8. The circuit breaker according to claim 7, wherein the cam mounting shaft section (12) is provided with a shaft shoulder, the energy storage indicating cam (16) and the energy storage state detecting cam (17) are sequentially sleeved on the cam mounting shaft section (12) in a rotation stopping manner and are in stop fit with the shaft shoulder, and the tail end of the cam mounting shaft section (12) is provided with a shaft end limiting structure for preventing the energy storage indicating cam and the energy storage state detecting cam from being separated.
9. The circuit breaker according to claim 8, wherein the shaft end limiting structure is a gland (33) fixed to the end face of the end of the cam mounting shaft section by two or more screws, and the gland (33) has a pressing surface for pressing and fixing the energy storage indicating cam and the energy storage state detecting cam to the shaft shoulder.
10. The circuit breaker according to any one of claims 6-9, wherein the sign transmission mechanism further comprises a middle swinging rod (25) hinged on the mechanism box through a middle part, a first connecting rod (26) is hinged between one end of the middle swinging rod (25) and the swinging rod, and a second connecting rod (27) is hinged between the other end of the middle swinging rod and the energy storage sign (11) for meeting the turnover angle requirement of the energy storage sign (11).
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| CN202111591963.XA CN114613641B (en) | 2021-12-23 | 2021-12-23 | Spring operating mechanism and circuit breaker |
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| CN202111591963.XA CN114613641B (en) | 2021-12-23 | 2021-12-23 | Spring operating mechanism and circuit breaker |
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| CN114613641A CN114613641A (en) | 2022-06-10 |
| CN114613641B true CN114613641B (en) | 2024-03-26 |
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| CA2092027A1 (en) * | 1993-03-19 | 1994-09-20 | Ronald Arvid Wainio | Operating mechanism usable with a vacuum interrupter |
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| Publication number | Publication date |
|---|---|
| CN114613641A (en) | 2022-06-10 |
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