CN1268760A - Mechanism for operating three position switch e. g. off/star/delta - Google Patents
Mechanism for operating three position switch e. g. off/star/delta Download PDFInfo
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- CN1268760A CN1268760A CN00103567A CN00103567A CN1268760A CN 1268760 A CN1268760 A CN 1268760A CN 00103567 A CN00103567 A CN 00103567A CN 00103567 A CN00103567 A CN 00103567A CN 1268760 A CN1268760 A CN 1268760A
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- mentioned
- supporting rod
- latch pin
- leading section
- manual operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/46—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having three operative positions, e.g. off/star/delta
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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
- H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
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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
- 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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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
The present invention provides an operating mechanism for a three-position switching device, which has a structure capable of being reduced in size and being simplified such that it is less liable to cause a malfunction for both automatic operation and manual operation. An operating shaft is rotated by a worm (14) and a worm wheel (16) such that a projection part (17) can be moved. A pair of catch-levers (19a, 19b) allow the projection part to advance/retreat between the confronting end parts thereof. The outside of the half-moon shaped parts hinders the withdrawal of the end parts of the catch levers, while the inside of the half-moon shaped parts has a pair of latch pins (20a, 20b) allowing the withdrawal of the end parts of the catch levers. A stopper block (23) abuts against the projection part to limit the extent of rotating angle of the worm wheel. The main shaft is rotated by a motor (1) in the event of motor drive, and the main shaft is rotated by means of a manual operation shaft (28a or 28b) in the event of manual operation.
Description
The present invention relates to the operating mechanism of three position opening and closing devices, the function that it has circuit breaker and earthing device simultaneously comprises actuating force is passed to the main shaft that carries out the movable terminal of handover operation between (closing) position, separation (opening) position and the earthing position engaging.
As the operating mechanism of this three position opening and closing devices, such as, include the disclosed form of the flat 3-133018 document of TOHKEMY.Below with reference to Fig. 7～9, the operating mechanism of this three positions opening and closing device is described.
At first, Fig. 7 represents the operating mechanism of this three positions opening and closing device, and Fig. 8 represents to constitute the cross wheel apparatus of this operating mechanism.In Fig. 7 and 8, drive division is by motor 1, reductor 2, and gear 3～5 and Maltese cross 7 constitute, by the rotation of its output shaft 6,, can change the angle of inclination of the plug-in strip plate 12 in the circuit breaker 11 by linkage 10, at " joint ", " separation " switches between each position of " ground connection ".Maltese cross actuator 8 in the above-mentioned Maltese cross 7 has and gear 5 8a of meshed gears portion around it, has locking arc sections a and driving pin b in the side.In addition, a side of the main body of Geneva wheel 9 have can with locking with 3 chimeric circular arc concave surface c1～c3 of arc sections a, have in addition and be arranged at respectively between this circular arc concave surface c1～c3, can make pin b realize 2 groove d1 of the radiation direction of turnover, d2.
Below with reference to Fig. 9 the action of above-mentioned operating mechanism is described.Fig. 9 is the figure of expression " separation " position, and the locking in the Maltese cross actuator 8 is chimeric with the circular arc concave surface c2 in arc sections a and the Geneva wheel 9, and with Geneva wheel 9 lockings, plug-in strip plate 12 is positioned at " separation " position.Under this state, if in order to carry out joint action actuating motor 1, then Maltese cross actuator 8 rotates with gear 5.If pin b is arranged in the position of Fig. 9 chimeric with groove d1 (b), then Geneva wheel 9 begins rotation, shown in Fig. 9 (c), and linkage 10 and 12 actions of plug-in strip plate.If Maltese cross actuator 8 rotates to " joint " position among Fig. 9 (d), then sell b and groove d1 and throw off, shown in Fig. 9 (e), the arc sections a and the circular arc concave surface c1 of locking usefulness are chimeric, and Geneva wheel 9 stops.
Because be easy to according to the top action of action description supposition from this " joint " position to " separation " position, the Therefore, omited is to its description.In addition, because shown in Figure 9, the change action from " separation " position to " ground connection " position is to carry out according to the mode opposite with above-mentioned action, so also omits the specific descriptions to it.
Also have, as the another kind of operating mechanism of three position opening and closing devices, as the disclosed form of the flat 4-94023 document of TOHKEMY.Figure 10 represents the basic structure of this operating mechanism, and Figure 11～15 are its action specification figure.
Here, the longitudinal sectional view of Figure 10 (a) for seeing, the longitudinal sectional view of Figure 10 (b) for seeing from the side from the front.Here, the position keeps 3 protuberances 17 of usefulness to be welded on the plate 50, and it is integral with operating axis 15 by connecting pin 51 and is connected.Mode switch plate 52 is fixed on the quill shaft 53 by bolt 73, and this plate 52 is following structure, in this structure, inserts, takes off the opening that is arranged in the plate 50 by being arranged at protuberance facial in it, then can realize connecting, throwing off.This quill shaft 53 is arranged on the operating axis 15 in chimeric mode, the leading section of this quill shaft 53 is a bag shape in addition, portion is provided with spring base 54 within it, spring 56 and spring base 55, thus mode switch plate 52 is pressed to the direction of plate 50, when mode switch, but the elastic force of antagonistic spring draws back these mode switch plate 52 relative plates 50.Then, bar 57 is connected mode switch plate 52 with handle 58.
Another bar 59 is connected with bar 61, and this bar 61 is integral and handle 58 rotations by connecting pin 62.In addition, bar 59 is connected with supporting rod 19 by part 60.Spring 63 is arranged on the handle 58 between bar 59 and the bar 61, as required, bar 59 can be pressed into the inboard.In the mode that can swing supporting rod 19 is set respectively on a pair of clamp axis 18 that about seeing, is provided with from the front.The leading section of these supporting rods 19 can be by lifting on the part 60 in the middle of being positioned at, and torsion spring 21 is arranged on the clamp axis 18, and the leading section of supporting rod 19 is pressed towards the below.Support 64 is fixed on the support 65 by bolt 66.Bar 67 to be can passing through pin 68, spring base 69, and spring 70 is supported on the support 64 to mode movably with upper and lower.The mode that bar 71 is swung for the center according to the pin that can be welded on the support 65 is installed, and the one end is connected with bar 67.In addition, roller 72 is installed on the other end of bar 67.For the anglec of rotation of unrestricted model switch boards 52, be provided with retainer 74, in order to limit the anglec of rotation of one of them supporting rod 19, be provided with retainer 75.
Below with reference to Figure 11～15, the action of operating mechanism shown in Figure 10 is described.At first, by the handover operation of following manner selection from " separation " position to " joint " position, or handover operation from " separation " position to " ground connection " position, this mode is: shown in Figure 11 (b), quill shaft 53 is extracted out, connecting portion between mode switch plate 52 and the plate 50 is taken apart, is the center with operating axis 15, realizes to the right or is tilted to the left.Quill shaft 53 recovers with the pattern shown in Figure 11 (a) according to because of the moving of spring 56.After preference pattern, as Figure 12 (a), (b), (c) shown in, by making handle 58, make bar 61 to right rotation, bar 59 rotation realizes locking by bar 67.By aforesaid operations, as shown in figure 13,, the supporting rod 19 and the protuberance 17 of plate 50 are thrown off by part 60.Then, make quill shaft 53 rotations, make it move on to new position.At this moment, as Figure 14 (a), (b), (c) shown in, be welded in parts 50a on the plate 50 and will be installed on the roller 72 on the bar 71 and push away, bar 67 is descended.Thus, bar 61, bar 59 is in free state, and because of the effect of torsion spring 21, supporting rod 19 recovers.Be welded in protuberance 17 on the plate 50 according to Figure 15 (a), (b), (c) mode shown in, supporting rod 19 engagements with above-mentioned recovery keep new position.
In the operating mechanism of 2 kinds above-mentioned three position opening and closing devices, the operating mechanism shown in Fig. 7～9 has following (a), (b) a described problem.
(a) in the automatic occasion of operation, because of certain obstacle, the power circuit that is used to detect the separation point position, make motor is realized under the situation that the switch of switch breaks down, have such as, from " joint " position,, arrive the danger of the action of " ground connection " position through " separation " position.
(b) in manually operated occasion, operating personnel are difficult to detect the separation point position by this operating mechanism, also have in addition such as, from " joints " position, warp " separation " position, the danger of operating to " ground connection " position.In addition, also be difficult to detect " joint " position and " ground connection " position, have following possibility in addition, promptly can only not operate the contacted state of periphery of pin b and Geneva wheel 9, and may apply excessive power pin b, thus the fault of causing.
Have, the operating mechanism that is described by Figure 10～15 has following (c) again, (d) a described problem.
(c) operate, circuit breaker, earthing device must carry out repeatedly handover operation, and operating procedure is loaded down with trivial details, and complex structure causes misoperation thereby become, or a reason of damaging.
(d) because the operation switch mode complexity of circuit breaker, earthing device, like this in order to carry out mode switch from a distant place, probably will complicated more mechanism.
The present invention proposes for the problem that solves in the above-mentioned existing device, the object of the present invention is to provide a kind of operating mechanism of three position opening and closing devices, the physical dimension of this mechanism is less, and is simple in structure, and operation all is difficult to take place misoperation with manual operation automatically.
The described invention of claim 1 relates to the operating mechanism of three following position opening and closing devices, this mechanism comprises main shaft, this main shaft passes to actuating force the movable terminal of carrying out handover operation between bonding station, separation point position and earthing position, it is characterized in that this mechanism comprises worm screw, it is connected with above-mentioned main shaft; Operating axis is connected with the worm gear with above-mentioned worm engaging on it; Holding member, it is connected with the aforesaid operations axle, at the relative axis of aforesaid operations axle, radially separates on the position of predetermined distance and maintains protuberance; A pair of clamp axis, it more leaves on the position of aforesaid operations axle according to its axis and aforesaid operations axle keeping parallelism at relative protuberance, and the spacing setting to stipulate mutually; A pair of supporting rod, it is supported on the above-mentioned clamp axis in the mode that can swing respectively, and raised part may be advanced and retreat between the leading section of its subtend; The 1st spring, it makes the leading section of above-mentioned supporting rod relative, by contacting with raised part, makes above-mentioned supporting rod be offset to the returnable position of above-mentioned leading section respectively; A pair of latch pin, its axis and above-mentioned clamp axis keeping parallelism, but be supported on the retracted position of the leading section of above-mentioned supporting rod according to rotatable mode, but with the corresponding position of above-mentioned retracted position, have the cross section and be half moon first quarter moon shape portion, the outside of this first quarter moon shape portion stops the returning of leading section of above-mentioned supporting rod, and the inboard of this first quarter moon shape portion can make the leading section of above-mentioned supporting rod return; The 2nd spring, it makes above-mentioned latch pin be offset to the returnable position of the leading section that stops supporting rod, by the revolving force that the outside applies, the leading section of above-mentioned supporting rod is return; Scotch, it contacts with raised part, thus the rotation angle range of restriction worm gear.
The described invention of claim 2 relates to the operating mechanism of the described three position opening and closing devices of claim 1, it is characterized in that it comprises a pair of tripping coil, it is provided with at each above-mentioned latch pin, after coil magnetization being driven moving iron core, this is moving unshakable in one's determinationly just can to make latch pin rotate to the front end that makes above-mentioned supporting rod to have portion to return may to install.
The described invention of claim 3 relates to the operating mechanism of the described three position opening and closing devices of claim 2, it is characterized in that it comprises the 1st manual operation axle, it is provided with corresponding to one in the above-mentioned latch pin, by manual handle, rotatably is connected with above-mentioned main shaft; The 2nd manual operation axle, its corresponding in the above-mentioned latch pin another and be provided with, by manual handle, rotatably the supporting; Poewr transmission mechanism, its rotation with above-mentioned the 2nd manual operation axle pass to above-mentioned the 1st manual operation axle.
The described invention of claim 4 relates to the operating mechanism of the described three position opening and closing devices of claim 3, it is characterized in that when making above-mentioned manual handle and above-mentioned the 1st manual operation axle chimeric, can will the position that have when moving iron core in the above-mentioned tripping coil is pressed into the excited state of tripping coil be set corresponding to one in the above-mentioned latch pin, and when making above-mentioned manual handle and above-mentioned the 2nd manual operation axle chimeric, the position that will have in the time of will being pressed into the excited state of tripping coil corresponding to another and the moving iron core in the above-mentioned tripping coil that is provided with in the above-mentioned latch pin.
The described invention of claim 5 relates to the operating mechanism of any one the described three position opening and closing device in the claim 1～4, it is characterized in that it comprises limit switch, when position that the leading section that above-mentioned latch pin is rotated to can make above-mentioned supporting rod is return, this limit switch is controlled the rotation of the motor that drives above-mentioned main shaft, the electric current that stops.
According to preferred embodiment, the present invention is specifically described below.
Fig. 1 is the front elevation of the structure of an embodiment of the operating mechanism of expression three position opening and closing devices of the present invention;
Fig. 2 is transformed into the action specification figure of engagement state from released state for the circuit breaker of embodiment shown in Figure 1;
Fig. 3 is transformed into the action specification figure of released state from engagement state for the circuit breaker of embodiment shown in Figure 1;
The key diagram of the supporting rod release movement when Fig. 4 is the electric operating of embodiment shown in Figure 1;
The key diagram of the supporting rod release movement when Fig. 5 is the manual operation of embodiment shown in Figure 1;
Fig. 6 is used for control circuit figure that embodiment shown in Figure 1 is controlled;
Fig. 7 is the perspective view of the basic structure of the operating mechanism of the existing three position opening and closing devices of expression;
Fig. 8 is the elevation of the cross wheel apparatus of formation operating mechanism shown in Figure 7;
Fig. 9 is the action specification figure of operating mechanism shown in Figure 7;
Figure 10 is the longitudinal sectional view of the basic structure of the another kind of operating mechanism of the existing three position opening and closing devices of expression;
Figure 11 is the longitudinal sectional view that is used to illustrate the action of operating mechanism shown in Figure 10;
Figure 12 is the action specification figure of operating mechanism shown in Figure 10;
Figure 13 is the action specification figure of operating mechanism shown in Figure 10;
Figure 14 is the action specification figure of operating mechanism shown in Figure 10;
Figure 15 is the action specification figure of operating mechanism shown in Figure 10.
Fig. 1 is the basic block diagram of an embodiment of the operating mechanism of expression three position opening and closing devices of the present invention.In the figure, main shaft 13 is connected with the output shaft of the motor 1 that produces actuating force, is equiped with worm screw 14 on this main shaft 13.Rotatably supporting is equiped with worm gear 16 on operating axis 15, and the axis of this operating axis 15 and main shaft 13 are perpendicular.Above-mentioned worm gear 16 and worm screw 14 engagements that are installed on the main shaft 13, thus the revolving force of main shaft 13 is passed to operating axis 15.
On operating axis 15,, be provided with discoideus holding member 17a and limit switch cam 29 at the opposition side of axially seeing of worm gear 16.The diameter of holding member 17a in its outer rim end, is provided with outstanding vertically roller shape protuberance 17 greater than worm gear 16.In addition, around cam 29, the joint END instruction limit switch 30a that moves in the mode of the position of rotation that detects worm gear 16 is installed on the unshowned in the drawings fixed part, 30b, and separate END instruction limit switch 31a, 31b.
In addition, from operating axis 15, for equidistant position, the outside of holding member 17a, a pair of clamp axis 18a of its axis and operating axis 15 keeping parallelisms, 18b are fixed on support etc. in spaced-apart mode.That is, clamp axis 18a and 18b are with mutual keeping parallelism, and the mode of maintenance prescribed distance is fixed.These clamp axis 18a and 18b support supporting rod 19a respectively in the mode that can swing, 19b, and this supporting rod 19a, the front end face among the 19b are provided with protuberance 17 relative to each other between them.At clamp axis 18a, the restricted supporting rod 19a of the arranged outside of 18b, the retainer of the inclination of 19b rearward end.In addition,, be wound with torsion spring 21a on the 18b respectively at clamp axis 18a, 21b, thus making supporting rod 19a respectively, the rearward end of 19b contacts with retainer with the pressure of regulation.Thus, as supporting rod 19a, the leading section of 19b is relative, when realizing that with protuberance 17 pressure contact respectively, this leading section can from operating axis 15 radially outward direction return.Also have, supporting rod 19a, the front end of 19b, the bight relative with protuberance 17, promptly the bight of drawing top constitutes the part of approximate cylinder face, and the bight of the below of drawing is the mouth shape.
Can make supporting rod 19a, the returnable position of each leading section of 19b is provided with latch pin 20a, 20b, and this latch pin 20a, the axis of 20b and clamp axis 18a, the 18b keeping parallelism, and support in rotating mode.This latch pin 20a, the axial part among the 20b promptly, makes supporting rod 19a, and the position that each leading section of 19b is return towards the below forms breach according to the mode that keeps half moon cross section.These first quarter moon shape portions are in back-to-back relation at its lateral surface, and the apical margin end of first quarter moon shape portion and supporting rod 19a, and torsion spring 22a can be passed through in the position that the bight of the mouth shape of 19b overlaps, and 22b rotatably keeps facing one direction.In this occasion, above-mentioned latch pin 20a, 20b have respectively towards the outstanding key lever 24a of lateral outer side, 24b.These key levers 24a, the leading section of 24b with corresponding to tripping coil 25a, the excited state of 25b and the 26a moving unshakable in one's determination that moves up and down, the front end of 26b contacts, this torsion spring 22a, 22b are according to the mode that keeps its state, to key lever 24a, 24b exerts pressure.
Therefore, push away if will move on the 26a unshakable in one's determination, then latch pin 20a rotates in the counterclockwise direction, and the front end of supporting rod 19a can be return towards the below from illustrated position.Equally, push away if will move on the 26b unshakable in one's determination, then latch pin 20b is rotated in a clockwise direction, and the front end of supporting rod 19b can be return towards the below from illustrated position.
In addition, latch pin 20a, 20b have following bar, and it makes respectively in order to detect latch pin 20a, the position of rotation of 20b and the limit switch 27a that is provided with, 27b action.
At relative operating axis 15, with latch pin 20a, the side that 20b is opposite, the position of taking back slightly of pars intermedia in the drawings is fixed with scotch 23 on support etc., it is used for contacting with protuberance 17, stops operating axis 15 rotations 1 circle.
Also have, leading section at the main shaft 13 that is equiped with worm screw 14, be formed with manual operation axle 28a, this 28a rotates main shaft 13, in the outside of tripping coil 25b by being embedded in unshowned manual handle among Fig. 1, be provided with another manual operation axle 28b, these manual operation axles 28a, 28b is realizing connecting in the mode that can transmit revolving force by the Poewr transmission mechanism 28c of chain etc.In this occasion, tripping coil 25a installs according to the mode of moving 26a unshakable in one's determination and the basic keeping parallelism of manual operation axle 28a, and is same, and tripping coil 25b installs according to the mode of moving 26b unshakable in one's determination and the basic keeping parallelism of manual operation axle 28b.When not shown manual handle is embedded manual operation axle 28a, can carry out pressing operation to moving 26a unshakable in one's determination, same, when not shown manual handle is embedded manual operation axle 28b, can carry out pressing operation to moving 26b unshakable in one's determination.
Action to the present embodiment that constitutes in the manner described above is described below.
At first, the movable terminal of the switching mechanism in the three position opening and closing devices handover operation from the position of " separation " to the position of " joint " is described.
Shown in Fig. 2 (a), when protuberance 17 is positioned at supporting rod 19a, in the time of between the leading section of 19b, the movable terminal in the operating mechanism of opening and closing device is in " separation " position.At this moment, latch pin 20a, 20b are in and stop supporting rod 19a, the state that the leading section of 19b is return, and protuberance 17 is embedded in supporting rod 19a, between each leading section of 19b.
Here, shown in Fig. 2 (b), by pushing key lever 24a, latch pin 20a rotates in the counterclockwise direction, and the front end of supporting rod 19a can be return towards the inboard of latch pin 20a.That is the comes out of engagement between supporting rod 19a and the latch pin 20a.If under this state, main shaft 13 is rotated along the illustrated direction of arrow, then worm gear 16 rotates in the counterclockwise direction, and simultaneously, protuberance 17 also begins to move in the counterclockwise direction.Along with the motion of protuberance 17, shown in Fig. 2 (c), protuberance 17 contacts with supporting rod 19a, thereby the leading section of this supporting rod 19a is return towards the inboard of latch pin 20a.If protuberance 17 moves to the position shown in Fig. 2 (d), supporting rod 19a returns to the home position under the effect of the restoring force of torsion spring 21a.In addition, shown in Fig. 2 (e), also make latch pin 20a return to the home position, latch pin 20a and supporting rod 19a are chimeric once more.After this, shown in Fig. 2 (f), because protuberance 17 is run on the scotch 23, movable terminal moves to the position of " joint " like this, finishes the handover operation from " separation " state to " joint " state.
Below the handover operation of the movable terminal in this operating mechanism from the position of " joint " to the position of " separation " is described.
When movable terminal was positioned at the position of " joint ", shown in Fig. 3 (a), protuberance 17 contacted with scotch 23.Here, shown in Fig. 3 (b), by by pressing 24a unshakable in one's determination, latch pin 20a rotation, the comes out of engagement between latch pin 20a and the supporting rod 19a.If under this state, as the center, make worm screw 14 with main shaft 13 along direction of arrow rotation among the figure, shown in Fig. 3 (c), then the protuberance 17 with worm gear 16 motions is the center with operating axis 15 also, along clockwise direction motion.Thus, when protuberance 17 is pushed supporting rod 19a, this bar 19a is return towards the inboard of latch pin 20a.Then, if make protuberance 17 move to the position of Fig. 3 (d), then under the effect of the restoring force of torsion spring 21, make supporting rod 19a return to the home position, be in the state shown in Fig. 3 (e), at last, shown in Fig. 3 (f), protuberance 17 contacts with supporting rod 19b, also makes latch pin 20a return to the home position, latch pin 20a and supporting rod 19a are chimeric once more, finish the handover operation from " joint " state to " separation " state.
In addition, for the movable terminal in the aforesaid operations mechanism from the position of " separation " handover operation to the position of " ground connection ", by with by corresponding each main points of left and right sides opposite side the main points mapping that movable terminal describes from the position of " separation " to the handover operation of the position of " joint " are moved, at last, by making protuberance 17 and scotch 23 collisions, end operation.Owing to can understand these handover operations at an easy rate, the Therefore, omited is to their specific descriptions.
When movable terminal is carried out handover operation, in the time of can be by motor shown in Figure 11 driving main shaft 13, the also manual handle driving main shaft 13 that can will describe by the back.
Fig. 4 (a), (b) the expression state that begins to drive by motor 1, wherein, state before Fig. 4 (a) expression drives, when from the position of " separation " during to the switching of the position of " joint ", shown in Fig. 4 (b), if tripping coil 25a is carried out excitation, then moving 26a unshakable in one's determination moves, by pushing key lever 24a, latch pin 20a rotates in the counterclockwise direction, the comes out of engagement between latch pin 20a and the supporting rod 19a, supporting rod 19a can clamp axis 18a be the center, free movement.Along with the rotation of this key lever 24a, motor circuit rotates simultaneously with current supply circuit and the operating axis 13 that limit switch 27a forms relative motor 1, and protuberance 17 is movable.Then, be transformed into the state of Fig. 2 (c) or Fig. 3 (c).Then, if the handover operation from " separation " to " joint ", or the handover operation from " joint " to " separation " finishes, and then turns back to the state of original Fig. 4 (a).
Fig. 5 (a), (b) the expression state that begins to drive by manual handle, wherein, the state before Fig. 5 (a) expression drives.Here, manual handle 42 comprises the holding part 421 that is rotated operation; Cylindrical portion 422, the end of itself and manual operation axle 28a is chimeric; Protuberance 423, it is used for inserting in the groove of the end that is arranged at manual operation axle 28; Edge of a wing portion 424, it carries out pressing operation to the 26a moving unshakable in one's determination among the tripping coil 25a when cylindrical portion 422 being embedded among the manual operation axle 28a.So, shown in Fig. 5 (b),, then be pressed into and the identical position of occasion of tripping coil 25a being carried out excitation will moving 26a unshakable in one's determination if manual handle 42 is embedded among the manual operation axle 28a, by the pressing operation to key lever 24a, latch pin 20a rotates in the counterclockwise direction.Thus, the comes out of engagement between latch pin 20a and the supporting rod 19a, supporting rod 19a can clamp axis 18a be center and free movement.Then, if make manual operation axle 28a rotation, then operating axis 13 rotations, and protuberance 17 is movable, then, is transformed into the state of Fig. 2 (c) or Fig. 3 (c).Handover operation or its reverse operating from the position of " separation " to the position of " joint " finish, if manual handle 42 is extracted, then return to the state of original Fig. 5 (a).
In addition, by manual handle 42 carry out from the position of " separation " to the handover operation of the position of " ground connection ", or its reverse operating can be by manual handle 42 being embedded among the manual operation axle 28b and carry out according to identical mode.
Fig. 6 represents the control circuit figure by the occasion of motor driven operating axis 15 and movable terminal, Fig. 6 (a) expression realizes the control circuit of the function of circuit breaker, the motor circuit of Fig. 6 (b) expression drive motor, Fig. 6 (c) expression is grounded the control circuit of the function of device, Fig. 6 (d) expression makes the comes out of engagement between supporting rod 19a and the latch pin 20a, and the motor control circuit of the comes out of engagement between supporting rod 19b and the latch pin 20b/clamping discharges circuit.In addition, in the drawings, the parts with label identical with Fig. 1 are represented identical parts respectively.
Wherein, the circuit breaker control circuit shown in Fig. 6 (a) comprises bonding operation relay 32a and lock out operation relay 33a.End at this bonding operation relay 32a, prevent relay tip (normally closed) 41 (ECX) by the earthing device misoperation, apply the operation commencing signal, in addition this end by self-sustaining with contact (often opening) 34a, be connected (below normal opened contact is abbreviated as " contact ", and only adopt the term of " normally closed contact ") with positive supply.In addition, the end at lock out operation relay 33a applies the lock out operation signal, and this end is connected with positive supply by self-sustaining contact 35a in addition.The contact (normally closed) of the other end of bonding operation relay 32a by lock out operation relay 33a with engage END instruction limit switch (normally closed) 30a, be connected with negative supply.The contact (normally closed) of the other end of lock out operation relay 33a by bonding operation relay 32a with separate END instruction limit switch 31a, be connected with negative supply.
Earthing device control circuit shown in Fig. 6 (c) comprises bonding operation relay 32b and lock out operation relay 33b.At the end of this bonding operation relay 32b, prevent relay tip (normally closed) 40 (DCX) by the circuit breaker misoperation, apply the operation commencing signal, the contact 34b that uses by self-sustaining of this end is connected with positive supply in addition.In addition, apply the lock out operation signal at the end of lock out operation relay 33b, this end is connected with positive supply by self-sustaining contact 35b in addition.The contact (normally closed) of the other end of bonding operation relay 32b by lock out operation relay 33b with engage END instruction limit switch (normally closed) 30b, be connected with negative supply.The contact (normally closed) of the other end of lock out operation relay 33b by bonding operation relay 32b with separate END instruction limit switch 31b, be connected with negative supply.
Motor circuit shown in Fig. 6 (b) connects in the following manner.Promptly, one end of motor 1 is by the motor contact 37a among motor circuit usefulness limit switch 27a and the bonding operation relay 32a, be connected with positive supply, and be connected with positive supply with contact 39b by the motor among the lock out operation relay 33b, also has this end by the motor contact 37b among motor circuit usefulness limit switch 27b and the bonding operation relay 32b, be connected with negative supply, and, be connected with negative supply by the motor contact 39a among the lock out operation relay 33a.The other end of motor 1 is by the motor contact 37b among motor circuit usefulness limit switch 27b and the bonding operation relay 32b, be connected with positive supply, and be connected with positive supply with contact 39a by the motor among the lock out operation relay 33a, this other end is connected with negative supply with contact 37a with motor among the bonding operation relay 32a with limit switch 27a by motor circuit in addition, and the motor usefulness contact 39b that passes through among the lock out operation relay 33b is connected with negative supply.
Discharge in the circuit in the motor control circuit shown in Fig. 6 (d)/clamping, tripping coil among the bonding operation relay 32a is in parallel with contact 38a with the tripping coil among the lock out operation relay 33a with contact 36a, the one end is connected with positive supply, and its other end is connected with negative supply by tripping coil 25a.Also have, the tripping coil among the bonding operation relay 32b is in parallel with contact 38b with the tripping coil among the lock out operation relay 33b with contact 36b, and the one end is connected with positive supply, and its other end is connected with negative supply by tripping coil 25b.Have, when tripping coil 25a was carried out excitation, motor circuit was with limit switch 27a action again, and when trip coil 25b was carried out excitation, motor circuit moved with limit switch 27b.
Action to the control circuit that constitutes in the manner described above is described below.
At first, bonding operation is described.
If from outside input operation commencing signal, then electric current flows through bonding operation relay 32a, makes self-sustaining contact 34a closure.Simultaneously, make the earthing device misoperation prevent that relay tip 40 from opening, electric current does not flow through the ground connection control circuit.In addition, also make simultaneously tripping coil among the bonding operation relay 32a with contact 36a, motor with contact 37a closure.Tripping coil 25a one is carried out excitation, then make motor circuit carry out closed action with limit switch 27a, electric current flows through motor circuit.If joint action finishes, engaging END instruction limit switch 30a uses the action of cam 29 to keep interlock with the limit switch that is installed on the operating axis 15, electric current is cut off, the excitation of bonding operation tripping coil 32a is also removed in addition, the normal opened contact 34a that self-sustaining is used, tripping coil contact 36a, motor all returns to reset condition with contact 37a, the electric current that flows through tripping coil 25a and motor 1 is all cut off, and action is stopped.
Below lock out operation is described.
If from outside input operation commencing signal, then electric current flows through lock out operation relay coil 33a, the normal opened contact 35a closure that self-sustaining is used.Simultaneously, make tripping coil contact 38a, motor contact 39a closure.If separating action finishes, separating END instruction limit switch 31a uses the action of cam 29 to keep interlock with the limit switch that is installed on the operating axis 15, electric current is cut off, the excitation of lock out operation tripping coil 33a is also removed in addition, the contact 35a that self-sustaining is used, tripping coil contact 38a, motor all returns to reset condition with contact 39a, the electric current that flows through tripping coil 25a and motor 1 is all cut off, and action is stopped.
To " joint " of the function that belongs to circuit breaker, the action of " separation " operation control corresponding is described above, but because " joints " in the earthing device, " separation " operated also is identical, the Therefore, omited is to its description.
So, if adopt present embodiment, just the effect of (a)～(f) item below then obtaining.
(a) owing to can not through the separation point position, move once, can prevent misoperation like this according to from bonding station until the mode of earthing position.
(b) because the rotation by latch pin, the comes out of engagement between itself and the supporting rod, very little from the influence of the load of operating axis like this, can positively move.
(c) owing to the comes out of engagement that makes by tripping coil between latch pin and the supporting rod, can make circuit breaker, earthing device action like this from a distant place, realize switching.
(d) because by manual handle being inserted any one in the 1st manual operation axle and the 2nd manual operation axle, operating personnel select open-circuit operation or ground connection operation, can prevent the misoperation that operating personnel carry out like this.
(e) electric motor operated, manual operation all can be safely, positively carry out.
(f) because in tripping coil action, after chimeric between latch pin and the supporting rod thrown off fully, motor began rotation, pushes supporting rod by the protuberance of operating axis, can prevent from latch pin etc. is caused excessive load, produced the situation of the bad or fault of action.
If according to above-described mode, adopt the present invention, the operating mechanism of following three position opening and closing devices can be provided, this mechanism structure size is less, simple in structure, and operation all is difficult to take place misoperation with manual operation automatically.
Claims (5)
1. the operating mechanism of a position opening and closing device, this mechanism comprises main shaft, this main shaft passes to the movable terminal of carrying out handover operation between bonding station, separation point position and earthing position with actuating force, it is characterized in that this mechanism comprises worm screw, and it is connected with above-mentioned main shaft; Operating axis is connected with the worm gear with above-mentioned worm engaging on it; Holding member, it is connected with the aforesaid operations axle, at the relative axis of aforesaid operations axle, radially separates on the position of predetermined distance and maintains protuberance; A pair of clamp axis, it more leaves on the position of aforesaid operations axle according to its axis and aforesaid operations axle keeping parallelism at relative protuberance, and the spacing setting to stipulate mutually; A pair of supporting rod, it is supported on the above-mentioned clamp axis in the mode that can swing respectively, and raised part may be advanced and retreat between the leading section of its subtend; The 1st spring, it makes the leading section of above-mentioned supporting rod relative, by contacting with raised part, makes above-mentioned supporting rod be offset to the returnable position of above-mentioned leading section respectively; A pair of latch pin, its axis and above-mentioned clamp axis keeping parallelism, but be supported on the retracted position of the leading section of above-mentioned supporting rod according to rotatable mode, but with the corresponding position of above-mentioned retracted position, have the cross section and be half moon first quarter moon shape portion, the outside of this first quarter moon shape portion stops the returning of leading section of above-mentioned supporting rod, and the inboard of this first quarter moon shape portion can make the leading section of above-mentioned supporting rod return; The 2nd spring, it makes above-mentioned latch pin be offset to the returnable position of the leading section that stops supporting rod, by the revolving force that the outside applies, the leading section of above-mentioned supporting rod is return; Scotch, it contacts with raised part, thus the rotation angle range of restriction worm gear.
2. mechanism according to claim 1, it is characterized in that it comprises a pair of tripping coil, it is provided with at each above-mentioned latch pin, and after coil magnetization being driven moving iron core, this is moving unshakable in one's determinationly just can to make latch pin rotate to the front end that makes above-mentioned supporting rod to have portion to return may to install.
3. mechanism according to claim 2 is characterized in that it comprises the 1st manual operation axle, and it is provided with corresponding to one in the above-mentioned latch pin, by manual handle, rotatably is connected with above-mentioned main shaft; The 2nd manual operation axle, its corresponding in the above-mentioned latch pin another and be provided with, by manual handle, rotatably the supporting; Poewr transmission mechanism, its rotation with above-mentioned the 2nd manual operation axle pass to above-mentioned the 1st manual operation axle.
4. mechanism according to claim 3, it is characterized in that when making above-mentioned manual handle and above-mentioned the 1st manual operation axle chimeric, can will the position that have when moving iron core in the above-mentioned tripping coil is pressed into the excited state of tripping coil be set corresponding to one in the above-mentioned latch pin, and when making above-mentioned manual handle and above-mentioned the 2nd manual operation axle chimeric, the position that will have in the time of will being pressed into the excited state of tripping coil corresponding to another and the moving iron core in the above-mentioned tripping coil that is provided with in the above-mentioned latch pin.
5. according to any one the described mechanism in the claim 1～4, it is characterized in that it comprises limit switch, when position that the leading section that above-mentioned latch pin is rotated to can make above-mentioned supporting rod is return, this limit switch is controlled the rotation of the motor that drives above-mentioned main shaft, the electric current that stops.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPP11089852/1999 | 1999-03-30 | ||
| JP11089852A JP2000285768A (en) | 1999-03-30 | 1999-03-30 | Operating mechanism for three-position switching device |
| JPP11089852 | 1999-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1268760A true CN1268760A (en) | 2000-10-04 |
| CN1152399C CN1152399C (en) | 2004-06-02 |
Family
ID=13982321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001035673A Expired - Lifetime CN1152399C (en) | 1999-03-30 | 2000-03-28 | Mechanism for operating three position switch e. g. off/star/delta |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2000285768A (en) |
| KR (1) | KR100336822B1 (en) |
| CN (1) | CN1152399C (en) |
| TW (1) | TW451236B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100405512C (en) * | 2004-10-06 | 2008-07-23 | 三菱电机株式会社 | Operation devcie for three-position opener |
| CN101055795B (en) * | 2006-03-13 | 2011-04-06 | 日新电机株式会社 | Multiphase opening-closing equipment |
| CN103035425A (en) * | 2011-09-29 | 2013-04-10 | Tkd株式会社 | Operating device for three-position switch |
| CN103165298A (en) * | 2013-03-07 | 2013-06-19 | 廖明厚 | Single-motor three-station mechanism for switch |
| CN107170595A (en) * | 2017-06-05 | 2017-09-15 | 河南平高电气股份有限公司 | A kind of mechanical position limitation mechanism and three station operating mechanisms using the mechanism |
| CN108520834A (en) * | 2018-06-04 | 2018-09-11 | 泰安市泰和电力设备有限公司 | A kind of manually handle three position mechanism used for high-voltage switch |
| CN112242267A (en) * | 2019-07-19 | 2021-01-19 | 武汉倍诺德开关有限公司 | Intermediate position limiting device of three-station operating mechanism |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7465986B2 (en) | 2004-08-27 | 2008-12-16 | International Rectifier Corporation | Power semiconductor device including insulated source electrodes inside trenches |
| JP4174495B2 (en) * | 2005-06-29 | 2008-10-29 | 株式会社日立製作所 | Switchgear switchgear |
| CN103367014A (en) * | 2013-06-21 | 2013-10-23 | 施春风 | Three-control switch |
| CN106653457B (en) * | 2016-11-23 | 2018-06-26 | 国家电网公司 | Tri-station isolating switch and its position detecting device, detection axis |
-
1999
- 1999-03-30 JP JP11089852A patent/JP2000285768A/en active Pending
-
2000
- 2000-03-13 TW TW089104511A patent/TW451236B/en not_active IP Right Cessation
- 2000-03-20 KR KR1020000013988A patent/KR100336822B1/en not_active IP Right Cessation
- 2000-03-28 CN CNB001035673A patent/CN1152399C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100405512C (en) * | 2004-10-06 | 2008-07-23 | 三菱电机株式会社 | Operation devcie for three-position opener |
| CN101055795B (en) * | 2006-03-13 | 2011-04-06 | 日新电机株式会社 | Multiphase opening-closing equipment |
| CN103035425A (en) * | 2011-09-29 | 2013-04-10 | Tkd株式会社 | Operating device for three-position switch |
| CN103035425B (en) * | 2011-09-29 | 2016-05-04 | Tkd株式会社 | 3-position on-off operator |
| CN103165298A (en) * | 2013-03-07 | 2013-06-19 | 廖明厚 | Single-motor three-station mechanism for switch |
| CN103165298B (en) * | 2013-03-07 | 2015-04-01 | 廖明厚 | Single-motor three-station mechanism for switch |
| CN107170595A (en) * | 2017-06-05 | 2017-09-15 | 河南平高电气股份有限公司 | A kind of mechanical position limitation mechanism and three station operating mechanisms using the mechanism |
| CN108520834A (en) * | 2018-06-04 | 2018-09-11 | 泰安市泰和电力设备有限公司 | A kind of manually handle three position mechanism used for high-voltage switch |
| CN108520834B (en) * | 2018-06-04 | 2024-01-19 | 泰安市泰和电力设备有限公司 | Manual operation three-station mechanism for high-voltage switch |
| CN112242267A (en) * | 2019-07-19 | 2021-01-19 | 武汉倍诺德开关有限公司 | Intermediate position limiting device of three-station operating mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010020669A (en) | 2001-03-15 |
| JP2000285768A (en) | 2000-10-13 |
| TW451236B (en) | 2001-08-21 |
| CN1152399C (en) | 2004-06-02 |
| KR100336822B1 (en) | 2002-05-16 |
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