CN101183620B - Operation counter driving apparatus for air circuit breaker - Google Patents
Operation counter driving apparatus for air circuit breaker Download PDFInfo
- Publication number
- CN101183620B CN101183620B CN2007101823364A CN200710182336A CN101183620B CN 101183620 B CN101183620 B CN 101183620B CN 2007101823364 A CN2007101823364 A CN 2007101823364A CN 200710182336 A CN200710182336 A CN 200710182336A CN 101183620 B CN101183620 B CN 101183620B
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- Prior art keywords
- counter
- cam
- working beam
- contact
- air circuit
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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
- H01H31/14—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch
- H01H31/16—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member
- H01H31/18—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member actuated through the movement of one or more insulators
- H01H31/20—Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member actuated through the movement of one or more insulators at least one insulator being rotatable about its own geometrical axis
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
Abstract
A mechanical operation counting apparatus for counting the number of times a circuit of an air circuit breaker is closed, while performing a closing or opening operation of a switching unit, is provided with a driving apparatus to prevent an impact caused by a momentarily large force applied by a closing spring or opening spring, including: a cam having an outer circumferential surface formed with a cam profile with a varying radius of curvature, a working lever having one end portion contacting the cam surface and pivoting according to a contact position thereof on the cam surface, a counter operating lever having one end contacting the working lever and pivoted by engagement with the working lever, and the counter being driven by the pivoting of the counter operating lever and counting and displaying the number of times the circuit of the air circuit breaker is closed.
Description
Technical field
The present invention relates to air circuit, and relate more specifically to be used for the operation counter driving arrangement of air circuit, drive the mechanical counter that the cut-off/close number of times of the circuit of air circuit is counted by this driving arrangement.
Background technology
Usually; air circuit is the electric device of following type; its can disconnect or closed power supply and load between circuit, perhaps when because electric short circuit etc. and can sensing when on circuit, having abnormal current such electric current and automatically cut off circuit and therefore protect electrical system.
Therefore, air circuit comprises and is used for the fixed contact that connects at a side place of the power supply of circuit or load; Be used to be connected to the mobile contactor of the opposite side of circuit, this mobile contactor is free of attachment to fixed contact and is movable to the position of contact fixed contact and the position that separates with fixed contact; Be used to drive mobile contactor to disconnecting or the switch element of make position.If switch element has and wherein is used for the closed of movable contact or disconnects and move necessary actuating force and be stored in the obtainable mechanism of elastic potential in the spring by utilization, then switch element has closing spring and disconnects spring.In such layout, disconnecting spring can store elastic potential energy by utilize the kinetic energy that discharges when closing spring drives closed procedure, and uses the energy of this storage when switch element drives opening operation.Therefore, require the feasible driving energy that can obtain switch element of closing spring energy storage.For to such closing spring energy storage, adopt and use by the user to the operation of energy storage handle and manual capacity regulator that applies or the stored energy mechanism that uses motor.Usually, present trend is to promote to have the exploitation that is used for the air circuit of the man-operating mechanism of such closing spring energy storage and automechanism.
Simultaneously, for the operation lifetime of monitoring air circuit with change time of its parts, be used for the operation counter equipment that the number of times of the circuit cut-off/close of air circuit is counted is installed in air circuit in addition.
Yet the operation counter that is used for air circuit of correlation technique arranges to have such structure, and promptly the excessive power that produces when the closed procedure of closing spring contact-actuating in this structure is applied directly to the driving mechanism of operation counter equipment.Therefore because the driving mechanism of operation counter equipment has been applied excessive power, so the parts of the driving mechanism of operation counter equipment may be damaged or destroy, thereby so cause the malfunction of operation counter equipment can not carry out its tally function.
Summary of the invention
Therefore, the driving arrangement that the purpose of this invention is to provide the operation counter that is used for air circuit, this driving arrangement is by discharging the driving mechanism that the power that produces cushioned and power was delivered to operation counter equipment to closing spring when carrying out closing of contact operation, therefore prevented the damage of the parts of driving mechanism, thereby made and stably drive operation counter and therefore carry out the operation that the number of times of the closing of contact is counted and shown reliably.
For realizing that this purpose is with other advantages and according to purpose of the present invention, as in this enforcement and describe widely, the operation counter driving arrangement is provided in air circuit, wherein air circuit comprises rotating shaft and the revolving force by the rotating shaft closing spring of storage elasticity potential energy therein, and the elastic potential energy that is stored in the closing spring by use makes closing of circuit, and this operation counter driving arrangement comprises:
Cam, this cam is connected to rotating shaft coaxially, and has outer surface, and this outer surface is formed with the cam profile that radius of curvature changes,, count to mechanical counter with buffering and the revolving force that transmits rotating shaft with closed number of times to the circuit of air circuit.
The operation counter driving arrangement is provided in air circuit, wherein air circuit comprises rotating shaft and the revolving force by the rotating shaft closing spring of storage elasticity potential energy therein, and be stored in the closing of contact that elastic potential energy in the closing spring makes circuit breaker by use, this operation counter driving arrangement comprises:
Cam, this cam are connected to rotating shaft coaxially can rotating with rotating shaft, and have outer surface, and this outer surface is formed with the cam profile that radius of curvature changes, with buffering with transmit the revolving force of rotating shaft;
Working beam, this working beam have the part of the outer surface of contact cam, and can pivot according to the position of this working beam on the outer surface of cam;
Mechanical counter, this mechanical counter has the driving shaft that is used to receive operating energy; With
The counter action bars, this counter action bars is connected to the driving shaft of counter, and a end with contact working beam, and can pivot by cooperative arrangement with working beam, with the driving shaft that therefore actuating force of working beam is delivered to counter the closed number of times of the circuit of air circuit is counted and is shown.
The operation counter driving arrangement is provided in air circuit, wherein air circuit comprises rotating shaft and has the revolving force switch element of the closing spring of storage elasticity potential energy therein by rotating shaft, and be stored in the closing of contact that elastic potential energy in the closing spring makes circuit breaker by use, this operation counter driving arrangement comprises:
Cam, this cam are connected to rotating shaft coaxially can rotating with rotating shaft, and have outer surface, and this outer surface is formed with the cam profile that radius of curvature changes, with buffering with transmit the revolving force of rotating shaft;
Working beam, this working beam has the core that is bearing in the side plate place in the mode that pivots by pivotal pin, divide first extension of extending and contacting the outer surface of cam from central division along a direction, second extension of dividing extension along another direction from central division, with end that is arranged in second extension and a pair of shank that has elongated channels betwixt, and working beam pivots according to its contact position on the outer surface of cam;
Mechanical counter, this mechanical counter are used for the closed number of times of the circuit of air circuit is counted; With
The counter action bars, this counter action bars is connected between counter and the working beam, and part with a pair of shank of contact in the elongated channels of working beam, and by pivoting, therefore actuating force is delivered to counter the closing of circuit number of times of air circuit is counted and shown with engaging of working beam.
Aforesaid and other purposes of the present invention, feature, aspect and advantage will become obvious from following detailed description of the present invention in conjunction with the accompanying drawings.
Description of drawings
Comprised accompanying drawing so that further understanding of the invention to be provided, and this accompanying drawing is included in this specification and forms the part of this specification, this accompanying drawing is described embodiments of the invention, and explains principle of the present invention together with specification.
Each figure is:
Fig. 1 is switch element and the operation counter that is used for air circuit of contiguous this switch element installation and the perspective view of driving arrangement thereof that illustrates according to the air circuit of first embodiment of the invention;
Fig. 2 is the decomposition diagram of removing the outer parts of cam that illustrates according to the operation counter driving arrangement that is used for air circuit of first embodiment of the invention;
Fig. 3 is the perspective view that illustrates according to the assembled state of the operation counter driving arrangement of the air circuit of first embodiment of the invention;
Fig. 4 to Fig. 6 is the state diagram that illustrates respectively according to the mode of operation of the operation counter driving arrangement of the air circuit of first embodiment of the invention;
Fig. 7 is switch element and the operation counter that is used for air circuit of contiguous this switch element installation and the perspective view of driving arrangement thereof that illustrates according to the air circuit of second embodiment of the invention;
Fig. 8 is the perspective view that only illustrates operation counter and driving arrangement, therefore shows the structure according to the operation counter driving arrangement that is used for air circuit of second embodiment of the invention; With
Fig. 9 to Figure 11 is the state diagram that illustrates respectively according to the mode of operation of the operation counter driving arrangement of the air circuit of second embodiment of the invention.
Embodiment
To provide the description to the preferred embodiments of the present invention now in detail, the example of preferred embodiment illustrates in the accompanying drawings.
With reference to figure 1, air circuit comprises switch element 3, and switch element 3 provides disconnection or the closed procedure and at a pair of vertical side plate 6 both sides place be bearing in they between of actuating force to carry out the contact.Be used for manually being installed in rotary manner a side place of switch element 3 for the energy storage handle 1 of closing spring (not shown) energy storage.According to the operation counter driving arrangement 5A of the air circuit of first embodiment of the invention frame support bracket 60 supportings by the opposite side place of switch element 3.Reference numeral 2 expression rotating shafts, it is connected to the rotating shaft of handle 1 or the rotating shaft (not shown) of motor directly or indirectly, with in closing spring stored elastic potential energy and be provided for power in closing spring stored elastic potential energy.
As shown in Figure 3, operation counter driving arrangement 5A comprises the cam 4 that is connected to rotating shaft 2 coaxially, and cam has periphery, this periphery is formed with the cam profile surface that radius of curvature changes, with buffering with transmit the action bars 52 of the revolving force (torque) of rotating shaft 2, count with number of times to the closing of contact of air circuit to mechanical counter 51.The outer surface of cam 4 comprises first surface part 42 with larger radius of curvature and the second surface part 41 with recessed surface, and wherein recessed surface has with the radius of curvature of first surface part 42 compares the radius of curvature that reduces gradually and reduce suddenly then.The profile of cam 4 is not restricted to reference to figure 5 to described profile embodiment illustrated in fig. 8, but have at outer surface under the condition of the cam profile that radius of curvature changes (being the surface portion that the surface portion that increases of radius of curvature and radius of curvature reduce), can have the profile of multiple modification.
As shown in Figures 2 and 3, operation counter driving arrangement 5A according to first embodiment of the invention also comprises having the working beam 53 that cam is followed part except that cam 4, cam is followed the outer surface of part contact cam 4, and follows the contact position of part on the outer surface of cam 4 according to cam and pivot.
Operation counter driving arrangement 5A also comprises the mechanical counter 51 of the closing of contact number of times that is used to show air circuit.Mechanical counter 51 can be conventional and common obtainable type, the blip counting device that drives of ratchet for example, it is whenever counted when its action bars is moved a certain angle path increment, and mechanical counter 51 comprises that driving shaft (with reference to the Reference numeral 51a among the figure 4) is used for the actuating force of counting operation with reception.
Operation counter driving arrangement 5A also comprises counter action bars 52, this counter action bars 52 is connected to the driving shaft of mechanical counter 51 at one end place, and the free end at its another free end 56 places by working beam 53 contacts, and by being rotated with engaging of working beam 53, the driving shaft 51a that therefore actuating force is delivered to mechanical counter 51 with the counting device in the counter 51 of therefore operating machine the number of times of the closing of contact of air circuit is counted and is shown.
Fig. 2 shows the decomposition diagram of diagram according to the parts except that cam of the operation counter that is used for air circuit of first embodiment of the invention and driving arrangement thereof.With reference to figure 2 in detail, the parts of operation counter driving arrangement according to an embodiment of the invention will be described from top to bottom.
At first, pivotal pin 54 comprises: head; Cylindrical body portion 54a, its diameter be less than head, and have level and smooth circumferential surface, and the pivotal point of working beam 53 is provided; With shank 54b, it has external screw thread and is threaded in the installing hole 62 of frame support bracket 60 being used for.
Shank 54b is outstanding by the installing hole in the frame support bracket 60 62, makes the end of giving prominence to frame support bracket 60 outsides of pivotal pin 54 to be fixed on frame support bracket 60 outsides by steady pin or folder (not shown), to prevent the separation of pivotal pin 54 at axial direction.
Alternatively, pivotal pin 54 can be substituted by the rivet of no any threaded portion, and the installing hole 62 that passes through of rivet can be driven plain or compress to outstanding end, frame support bracket 60 outsides, therefore to prevent rivet moving at axial direction.
As knowing in the art, in mechanical counter 51, be provided for showing the digital indicator dial plate (not shown) and the driving shaft of count tag.Equally, mechanical counter 51 comprises the shell that is used to hold and protect the digital indicator dial plate.As Fig. 3 and shown in Figure 5, the upper and lower of shell is provided with the mounting flange or the protuberance of the extension that has installing hole therein, and the fixture that is used for counter 51 is installed to frame support bracket 60 can be inserted through this installing hole.
The torsionspring (not shown) is installed between the driving shaft 51a of counter action bars 52 and mechanical counter 51, or be installed on the driving shaft of counter 51, rotate (in this example, rotating) with the driving shaft 51a that promotes counter action bars 52 and mechanical counter 51 along a direction along the counter clockwise direction that the contact between the end 57 of the end 56 of counter action bars 52 and working beam 53 engages.Therefore, if the cam of the working beam among Fig. 3 53 is followed the position of part 55 contact cams 4 at any part place of the first surface part 42 with larger radius of curvature, then the end 56 of counter action bars 52 is pressed downward.If cam is followed part 55 and is bonded on having on the second surface part 41 than small curvature radius of cam 4, then the end 56 of counter action bars 52 is upwards pushed away by the elastic force of spring (not shown).
The cam of cam 4 shown in Figure 3, the major part of rotating shaft 2 and working beam 53 is followed in the switch element 3 of part 55 between the side plate of Fig. 1, and is therefore invisible in Fig. 1.
The operation of operation counter driving arrangement 5A of air circuit that is used to have a this structure according to first embodiment of the invention will be explained in detail with reference to figure 4 to Fig. 6.
To shown in Figure 6, in case when rotating shaft 2 rotates to be compression close spring, cam 4 is rotated being followed part 55 contacts by the cam of working beam 53 when as Fig. 4.
At this, follow in the orientation of first surface part 42 of part 55 contact cams 4 at the cam of working beam shown in Figure 4 53 with larger radius of curvature, an end 57 of working beam 53 is pressed on the end 56 of counter bar 52, therefore with end 56 to pressing down.
Simultaneously, as shown in Figure 5, when the cam of working beam 53 follow part 55 run into cam 4 have second surface part 41 than small curvature radius the time, working beam 53 pivots along clockwise direction and its end 57 moves up.Therefore, flexibly be biased to the counter action bars 52 that pivots in the counterclockwise direction by the spring (not shown) and pivot in the counterclockwise direction, and the end 56 of counter action bars 52 upwards raises.
Simultaneously, as shown in Figure 6, follow part 55 when turning back to contact position on the first surface part 42 with larger radius of curvature of cam 4 when cam 4 further is rotated in a clockwise direction and when the cam of working beam 53, working beam 53 pivots in the counterclockwise direction, and its end 57 moves down.Therefore therefore, the end 56 of counter action bars 52 is pushed in the end 57 of working beam 53 when moving down, and the end 56 of counter action bars 52 pivots along clockwise direction and moves down.
According to the rotation up and down of such repetition of counter action bars 52, the driving shaft 51a of mechanical counter 51 rotates step by step by the operation of ratchet and pawl mechanism (not shown).Therefore therefore, the digital dial plate (not shown) in mechanical counter 51 rotates step by step, the closed number of times of the contact of air circuit is counted.
The closed switching manipulation that can represent to be disconnected to closing of circuit in the contact of air circuit from circuit.Can think that the number of times of circuit disconnection is identical with the number of times of closing of circuit.Therefore, the number of times of the closing of circuit of air circuit multiply by 2 total degrees for the closing of circuit of air circuit and disconnection.Therefore, use the number of times of the air circuit closure of mechanical counter 51 demonstrations, the user can recognize the number of times of closing of circuit, number of times and the total degree closed and that disconnect that circuit disconnects.
Design as described above and when axle 2 rotates to be compression close spring, utilize the cam of working beam to follow part with the operation counter driving arrangement 5A that operates to contact the cam 4 that is installed in rotating shaft 2 places according to the air circuit of first embodiment of the invention, and the moving corresponding to its contact position on the outer surface of cam 4 of working beam.Therefore, the power that is caused by the unexpected tensioning of closing spring is transmitted gradually by the cam face by cam 4 and is cushioned, therefore prevented the damage of the parts (for example counter action bars 52, working beam 53 etc.) of operation counter driving arrangement 5A, and on parts, do not impacted.
In addition, be bent or damage because can prevent action bars 52 or working beam 53, can be with the accurately counting of the number of times of executive circuit cut-off/close and the operation of demonstration of stable status.Therefore, because the user can be accurately and recognized the number of times of circuit cut-off/close reliably, when need to safeguard the accident that causes because of the degeneration of air circuit in the distribution system to prevent so can discern effectively.
To describe the operation counter driving arrangement that is used for air circuit then in detail according to second embodiment of the invention.
Identical with the operation counter driving arrangement 5A that is used for air circuit aspect a lot of according to the operation counter driving arrangement of the air circuit of second embodiment of the invention according to first embodiment of the invention.The most basic but also outstanding feature of the present invention is: the big power that produces when being the closing spring energy storage by rotating shaft 2 is cushioned to be delivered to the miscellaneous part of operation counter driving arrangement by cam.Except that this basic common trait, the working beam that is used to transmit the required power of actuation counter is simultaneously according to its contact position pivot on the periphery cam face of cam, and the frame support bracket that the four-stage of counter action bars and mechanical counter (phase) is fixed to side plate 6 supports and keeps.
Simultaneously, will be described in the described operation counter driving arrangement of first embodiment briefly and according to the architectural difference between the operation counter driving arrangement that is used for air circuit of second embodiment of the invention.
The operation counter driving arrangement 5B that is used for air circuit according to second embodiment of the invention has the following difference that is different from according to the operation counter driving arrangement 5A of first embodiment: at first, cam 7 is co-axially mounted on the end of rotating shaft 2 outside with the side plate 6 that is exposed to switch element 3.The second, working beam 53 is supported pivotly by the pivotal pin 63 that is fixed to side plate 6.The 3rd, working beam 53 has and is used to make working beam 53 and counter action bars 52 interconnective unique textures.
To be described in detail with reference to the attached drawings structure and operation below according to the operation counter driving arrangement 5B of the air circuit of second embodiment of the invention.
Realizing that Fig. 7 is to the operation counter driving arrangement 5B that is used for air circuit according to second embodiment of the invention shown in Figure 11, air circuit comprises switch element 3, switch element 3 actuating force of the disconnection of carrying out the contact and closed procedure is provided and in its both sides by pair of side plates 6 supportings.Be used for manually being rotatably installed in a side place of switch element 3 for the energy storage handle 1 of closing spring (not shown) energy storage.According to the operation counter driving arrangement 5B of the air circuit of second embodiment of the invention frame support bracket 60 supportings by the opposite side place of switch element 3.Reference numeral 2 expression rotating shafts, this rotating shaft is connected to the rotating shaft (not shown) of handle 1 or the rotating shaft (not shown) of motor directly or indirectly, to store elastic potential energy and be provided for storing the revolving force of elastic potential energy in closing spring in closing spring.
As shown in Figure 7 and Figure 8, operation counter driving arrangement 5B comprises the cam 7 that is connected to rotating shaft 2 coaxially, and cam 7 has the outer surface on the cam profile surface that changes as radius of curvature, with buffering with transmit the revolving force of rotating shaft 2.The outer surface of cam 7 comprises first surface part 7a with larger radius of curvature and has the second surface part 7b that compares less radius of curvature with the radius of curvature of first surface 7a that second portion 7b almost is similar to flat plane.The profile of cam 7 is not restricted to reference to figure 7 to described profile embodiment illustrated in fig. 11, but have at outer surface under the condition of the cam profile surface that radius of curvature changes (being the surface portion that the surface portion that increases of radius of curvature and radius of curvature reduce), can have the profile of multiple modification.
As shown in Figure 7 and Figure 8, counter equipment 5B according to second embodiment of the invention also comprises having the working beam 53 that cam is followed the part part except that cam 7, cam is followed the outer surface that part partly contacts cam 7, and pivots according to its contact position on the outer surface of cam 7.Working beam 53 is bearing in side plate 6 places pivotly by pivotal pin 63.Be similar to the first embodiment of the present invention, the end that extends in the side plate 6 of pivotal pin 63 can be fixing to prevent that it from axial direction separating by steady pin or folder (not shown).Adopt in a like fashion, the detailed structure of pivotal pin 63 can be identical with the structure of the described pivotal pin 54 of first embodiment, or pivotal pin can be substituted by rivet.
Identical among mechanical counter 51 and first embodiment, and can be by frame support bracket 60 supportings, frame support bracket 60 forms " L " shape shape and is fixed to side plate 6.
Operation counter driving arrangement 5B also comprises and is used for the closed number of times of the circuit of air circuit is counted and shown mechanical counter 51.Mechanical counter 51 comprises the driving shaft (not shown) that is used to receive the actuating force that makes its operation.
Operation counter driving arrangement 5B also comprises the counter action bars 52 of the driving shaft that is connected to mechanical counter 51 at one end, action bars 52 has and is used to contact the other end of working beam 53 and pivots by the cooperative arrangement with working beam 53, and the driving shaft that therefore actuating force is delivered to counter 51 is to count the closed number of times of the circuit of air circuit and to show.
Fig. 8 shows the perspective view according to the critical piece of the operation counter driving arrangement that is used for air circuit of second embodiment of the invention.
With reference to figure 8, with the parts of describing in detail from left to right according to the operation counter driving arrangement of second embodiment of the invention.
In Fig. 8, at first, a pair of closing spring energy storage cam 2a in the switch element 3 between side plate 6 is installed in the core of rotating shaft 2 and axially spaced, and this side plate 6 is omitted in Fig. 8 for convenience.An end that is included in the operations according to the instant invention counter driving arrangement and the cam 7 that the actuating force that is applied to the operation counter driving arrangement cushions/transmits is installed in the outside that is projected into side plate 6 of rotating shaft 2 is located.
The outer surface of cam 7 comprises first surface part 7a with larger radius of curvature and has the second surface part 7b that compares less radius of curvature with first surface 7a that second surface part 7b almost is similar to flat plane.
Working beam 53 is bars of " L " shape roughly, and comprise: the center pivoting portions 53a that is bearing in side plate 6 places by pivotal pin 63 in rotary manner as pivot axis, extend and the outer peripheral surface portion 7a of contact cam 7 and the 53b of first of 7b along a direction from pivot part 53a, the second portion 53c that extends along another direction from pivot part 53a and be arranged in the place, end of the second extension 53c and have a pair of shank 53d of elongated channels 53e betwixt.Working beam 53 can pivot according to its contact position on the outer surface of cam.
At this, preferably, the end of the outer peripheral surface portion 7a of contact cam 7 and the first extension 53b of 7b forms the cam with circular surface and follows part to reduce friction.
Identical with the pivotal pin 54 of first embodiment of the invention, pivotal pin 63 comprises head; Main part, it has the diameter less than head, and has level and smooth circumferential surface, and the pivot supporting point of working beam 53 is provided; And shank, it has external threaded surface and is threaded in the installing hole (not shown) of side plate 6 being used to.
In addition, be similar to the first embodiment of the present invention, shank limits by outstanding feasible pin (not shown) or the geometrical clamp of can being fixed towards the end of the outstanding pivotal pin 63 in the inboard of side plate 6 (being the inboard of switch element 3) of the installing hole in the side plate 6, separates along its axial direction to prevent pivotal pin 63.
Alternatively, can realize this structure as follows, be that pivotal pin 63 can be substituted by the rivet of no any threaded portion, and can expand, compress or flatten towards the end of the interior side-prominent rivet of side plate 6, so prevent in axial direction mobile by installing hole.
Be used to show the digital dial plate (not shown) of count tag and be arranged in the mechanical counter 51 as the driving shaft (not shown) of the rotating shaft of this digital dial plate.Mechanical counter 51 comprises that also shell is to hold and to protect this digital dial plate.As Fig. 7 and shown in Figure 11, the top of shell and lower part are provided with mounting flange or the protuberance that has the hole (not shown) therein, and fixture can be inserted to be fixed to frame support bracket 60 by this hole.
Counter action bars 52 is connected to the driving shaft of mechanical counter 51.Preferably, the end 52a of the paired shank 53d of contact working beam 53 forms and has circular surface to reduce friction.
For this structure, will describe in detail with reference to figure 9 to Figure 11 according to the operation of the operation counter driving arrangement 5B of the air circuit of second embodiment of the invention.
To Figure 11, in case when rotating shaft 2 rotates to be compression close spring, cam 7 is rotated being followed the contact of part end by the cam of the first extension 53b of working beam 53 when with reference to figure 9.
At this, if the cam of the first extension 53b of working beam shown in Figure 9 53 is followed the first surface part 7a with larger radius of curvature of part end contact cam 7, and when working beam 53 rotated in the counterclockwise direction, two shank 53d of working beam 53 moved down.Therefore, in the bottom of the elongated channels 53e of the end 52a of counter action bars 52 between the shank 53d of working beam 53.Simultaneously, counter action bars 52 pivots in the counterclockwise direction, and the end 52a of counter bar 52 moves down.
Simultaneously, if the cam of the first extension 53b of working beam 53 is followed the second surface part 7b than small curvature radius of having of part end contact cam 7, this second surface part 7b is shown in Figure 10 for almost being similar to the plane, then working beam 53 pivots along clockwise direction, and two shank 53d move up.Therefore, the end 52a of counter action bars 52 is located at the place, top of the elongated channels 53e between the shank 53d of working beam 53.Simultaneously, counter action bars 52 pivots and the end 52a of counter action bars 52 moves up in the counterclockwise direction.
Simultaneously, when cam 7 further is rotated in a clockwise direction as shown in figure 11, if and the cam of the first extension 53b of working beam 53 follows the part end and be positioned at the second surface part 7b than small curvature radius of having that the position that is further rotated along clockwise direction contacts cam 7 simultaneously, then working beam 53 pivots and the cam of the first extension 53b is followed the part end and further moved up along clockwise direction.
Therefore, the end 52a of counter bar 52 is located at the place, top of the elongated channels 53e between two shank 53d of working beam 53.Simultaneously, counter action bars 52 further pivots in the counterclockwise direction and therefore makes the end 52a of counter action bars 52 further move up.
Simultaneously, as shown in Figure 9, when cam 7 is further rotated along clockwise direction, if and the cam of the first extension 53b of working beam 53 is followed the position that the part end turns back to the first surface part 7a with larger radius of curvature of contact cam 7, as described in reference to figure 9, then the end 52a of counter action bars 52 moves down at last.
Move according to repeating to apply the up/down of operational stroke, make the driving shaft rotation of counter 51 to counter action bars 52 and end 52a.Therefore, therefore the digital dial plate (not shown) rotation in the counter 51 is counted the closed number of times of the circuit of air circuit.
The air circuit closure can be represented to switch to closing of circuit from the circuit disconnection.Think that the number of times of circuit disconnection is identical with the number of times of closing of circuit.Therefore, the number of times of the closing of circuit of air circuit multiply by 2 and is the closing of circuit of air circuit and the total degree of disconnection.Therefore, use the number of times of the air circuit closure of mechanical counter 51 demonstrations, the user can recognize the number of times of closing of circuit, number of times and the total degree closed and that disconnect that circuit disconnects.
Construct as described above to contact and be installed in the cam 7 that rotates to be rotating shaft 2 places that closing spring is compressed, and operate according to the contact position on the outer surface of cam 7 with the operation counter driving arrangement 5B that is used for air circuit that operates according to second embodiment of the invention.Therefore, the power that is caused by the unexpected tensioning of closing spring is cushioned by the transmission gradually by the cam face of cam 7, therefore prevented the damage of the parts (for example counter action bars 52, working beam 53 etc.) of operation counter driving arrangement 5B, and on parts, do not impacted.
Be bent or damage because can prevent counter action bars 52 or working beam 53, can accurately carry out the operation that the number of times of closing of circuit/disconnection is counted and shown with stable status.Therefore, because the user can be accurately and recognized the number of times of closing of circuit/disconnection reliably, when need to safeguard the accident that causes because of the degeneration of air circuit in the distribution system to prevent so can discern effectively.
In addition, can easily be installed to the side plate 6 of supporting switch element 3, make to be easily mounted to air circuit or to separate from air circuit by frame support bracket according to the operation counter driving arrangement 5A that is used for air circuit according to the present invention or 5B.
The characteristics that do not depart from feature because eigen can implement in a variety of forms, and be understood that, unless point out in addition, otherwise the previously described any details of can't help the foregoing description limits, therefore but should be interpreted as widely in the claim restricted portion, and be intended to border that this claim comprises that all belong to claim and boundary or variation and the modification in the equivalent of border and boundary like this.
Claims (8)
1. operation counter driving arrangement in air circuit, wherein this air circuit comprises rotating shaft and the revolving force by the described rotating shaft closing spring of storage elasticity potential energy therein, and the elastic potential energy that is stored in the described closing spring by use makes closing of circuit, and this operation counter driving arrangement comprises:
Cam, this cam are connected to described rotating shaft coaxially so that can rotate with described rotating shaft, and have outer surface, and this outer surface is formed with the cam profile that radius of curvature changes, to cushion and to transmit the revolving force of described rotating shaft;
Working beam, this working beam have the part of the outer surface of the described cam of contact, and pivot according to the position of this working beam on the outer surface of described cam;
Mechanical counter, this mechanical counter has the driving shaft that is used for the count pick up energy; With
The counter action bars, this counter action bars is connected to the driving shaft of described counter, and a end with the described working beam of contact, and by pivoting with engaging of described working beam, will drive thus energy delivery to the driving shaft of described counter the closed number of times of the circuit of described air circuit is counted and is shown.
2. equipment according to claim 1, wherein said working beam have the outstanding cam of the outer surface of the described cam of contact and follow the part part.
3. equipment according to claim 2, the outstanding cam of the outer surface of the described cam of contact of wherein said working beam follow part partly form have round-shaped.
4. equipment according to claim 1 also comprises:
Be used to support the frame support bracket of described counter and described working beam,
Wherein be formed with axis hole in an end of described working beam, and described working beam is bearing in described frame support bracket place in the mode that pivots by pivotal pin, this pivotal pin passes described axis hole and is fixed to described carriage.
5. equipment according to claim 1, wherein the end of the described working beam of contact of counter bar forms and has circular surface.
6. operation counter driving arrangement in air circuit, wherein this air circuit comprises rotating shaft and has the switch element of the closing spring of the revolving force storage elasticity potential energy by described rotating shaft, and the elastic potential energy that is stored in the described closing spring by use makes closing of circuit, and this operation counter driving arrangement comprises:
Cam, this cam are connected to described rotating shaft coaxially so that can rotate with described rotating shaft, and have outer surface, and this outer surface is formed with the cam profile that radius of curvature changes, to cushion and to transmit the revolving force of described rotating shaft;
Working beam, this working beam has: the core that is bearing in the side plate place in the mode that pivots by pivotal pin, extend and contact first extension of the outer surface of described cam from described core along a direction, along second extension of another direction from described core extension, with place, end that is arranged in described second extension and a pair of shank that has elongated channels betwixt, and this working beam pivots according to its contact position on the outer surface of described cam;
Mechanical counter, this mechanical counter are used for the closed number of times of the circuit of described air circuit is counted; With
The counter action bars, this counter action bars is connected between described counter and the described working beam, and part with a pair of shank of contact in the elongated channels of described working beam, and, thus actuating force is delivered to described counter the closed number of times of the circuit of described air circuit is counted and shown by pivoting with engaging of described working beam.
7. equipment according to claim 6, wherein the part of the described shank of contact of counter bar is the part of giving prominence to, and the surface of the described shank of contact of described counter bar is circular.
8. equipment according to claim 6, the end of first extension of the described cam outer surface of the contact of wherein said working beam is formed with circular surface.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060101061 | 2006-10-17 | ||
| KR1020060101061A KR100807545B1 (en) | 2006-10-17 | 2006-10-17 | Counter apparatus for air circuit breaker |
| KR10-2006-0101062 | 2006-10-17 | ||
| KR1020060101062 | 2006-10-17 | ||
| KR1020060101062A KR100771921B1 (en) | 2006-10-17 | 2006-10-17 | Counter apparatus for air circuit breaker |
| KR10-2006-0101061 | 2006-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101183620A CN101183620A (en) | 2008-05-21 |
| CN101183620B true CN101183620B (en) | 2011-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101823364A Active CN101183620B (en) | 2006-10-17 | 2007-10-17 | Operation counter driving apparatus for air circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100807545B1 (en) |
| CN (1) | CN101183620B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009017682A1 (en) * | 2009-04-16 | 2010-10-21 | Abb Ag | Coupling of a trip unit to a circuit breaker |
| US8319133B2 (en) * | 2010-11-02 | 2012-11-27 | Eaton Corporation | Electrical switching apparatus and charging assembly therefor |
| KR101400827B1 (en) | 2012-12-28 | 2014-05-29 | 엘에스산전 주식회사 | Air circuit breaker equipped with counter |
| CN103839725A (en) * | 2013-11-15 | 2014-06-04 | 国网山东省电力公司青岛供电公司 | Isolating switch |
| CN104299029B (en) * | 2014-09-26 | 2017-09-22 | 浙江正泰电器股份有限公司 | breaker counting device |
| CN104463318A (en) * | 2014-12-15 | 2015-03-25 | 重庆三贵机械制造有限公司 | Lever cam mechanism of counter |
| KR101904878B1 (en) * | 2017-04-11 | 2018-10-08 | 엘에스산전 주식회사 | Circuit breaker and counting apparatus for the same |
| CN107958821B (en) * | 2017-12-28 | 2020-06-23 | 江苏大全凯帆开关有限公司 | Circuit breaker with counter |
| CN107919252B (en) * | 2017-12-28 | 2020-12-29 | 南京工程学院 | Electromagnetic contactor with counter |
| KR102121524B1 (en) * | 2018-06-22 | 2020-06-10 | 엘에스일렉트릭(주) | Modularized auxiliary contact and current circuit breaker having simple structure |
| CN113036652A (en) * | 2021-03-19 | 2021-06-25 | 北京北元电器有限公司 | Drawer seat with counting function for drawer type frame circuit breaker |
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| US3858133A (en) * | 1974-01-21 | 1974-12-31 | G & W Electric Speciality Co | Switch transfer mechanism |
| US4095676A (en) * | 1976-11-23 | 1978-06-20 | Howe-Yin Research Co., Inc. | Stored energy operation for breakers |
| CN1224261A (en) * | 1997-12-10 | 1999-07-28 | 西门子公司 | Display device for circuit breaker equipment |
| CN1728307A (en) * | 2002-10-30 | 2006-02-01 | 株式会社日立制作所 | Solenoid operator and solenoid-operated switching device and control device for electromagnet |
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| JPH0864072A (en) * | 1994-08-24 | 1996-03-08 | Tamura Electric Works Ltd | Scope setting limit switch |
| KR200225122Y1 (en) | 2000-12-22 | 2001-05-15 | 엘지산전주식회사 | moving counter in gas insulated load breaker switch |
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2006
- 2006-10-17 KR KR1020060101061A patent/KR100807545B1/en active IP Right Grant
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| US3858133A (en) * | 1974-01-21 | 1974-12-31 | G & W Electric Speciality Co | Switch transfer mechanism |
| US4095676A (en) * | 1976-11-23 | 1978-06-20 | Howe-Yin Research Co., Inc. | Stored energy operation for breakers |
| CN1224261A (en) * | 1997-12-10 | 1999-07-28 | 西门子公司 | Display device for circuit breaker equipment |
| CN1728307A (en) * | 2002-10-30 | 2006-02-01 | 株式会社日立制作所 | Solenoid operator and solenoid-operated switching device and control device for electromagnet |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101183620A (en) | 2008-05-21 |
| KR100807545B1 (en) | 2008-02-28 |
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