CN103065832A - Switch-off limit device of switching device - Google Patents
Switch-off limit device of switching device Download PDFInfo
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- CN103065832A CN103065832A CN2012105824121A CN201210582412A CN103065832A CN 103065832 A CN103065832 A CN 103065832A CN 2012105824121 A CN2012105824121 A CN 2012105824121A CN 201210582412 A CN201210582412 A CN 201210582412A CN 103065832 A CN103065832 A CN 103065832A
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Abstract
The invention relates to a switch-off limit device of a switching device, and belongs to the technical field of low-voltage apparatus. The switch-off limit device of the switching device comprises a frame and a converting mechanism, wherein the frame includes a pair of symmetrically-arranged side plates, the converting mechanism is composed of a main shaft, lever components and a driving part, the main shaft is rotatably arranged between the pair of side plates, the driving part is fixed on the main shaft, the main shaft is fixedly provided with an oscillating rod, one end of the oscillating rod is connected with one end of a connecting rod in a hinged mode, and the other end of the connecting rod is connected with a moving contact in a hinged mode. The switch-off limit device of the switching device is characterized in that the converting mechanism further comprises limiting devices, and the limiting devices, corresponding to the driving part, are arranged on the side plates, and used for locking the driving part; moreover, the lever components can drive the limiting devices, so that locking on the driving part by the limiting devices can be removed. Due to the effect of the limiting devices, the motion that the moving contact draws near the static contact can be avoided in the process of energy components storing energy for the feed motion of the moving contact, so that electrical endurance of the switching device is prolonged, and the reliability of the switching device is improved.
Description
Technical field
The invention belongs to the low voltage electrical apparatus technology field, be specifically related to a kind of opening limit device of switching device
Background technology
Device for switching is being undertaken the various functions of protection, control, conversion as components and parts necessary in the distribution loop.The reliability of device for switching is depended in the fail safe of electricity consumption to a great extent.
The contactor of switching device, sub-switching operation are generally finished by its operating mechanism, and this operating mechanism generally has several forms such as spring operating mechanism, operation electriomagnet mechanism.
Existing switching device has gate-dividing state and "on" position.Both switchings are with disjunction or closed circuit, thereby realization is to the control of loaded current.To the "on" position transfer process, at first external force drives the power pack energy storage of operating mechanism inside from gate-dividing state.When arriving a threshold values, this energy members dispensing, and drive moving contact fast approaching fixed contact, and with enter "on" position after fixed contact contacts.In the process of above-mentioned energy members energy storage, some parts related with energy members can move, the driver part that tends to cause be connected with moving contact lacks restriction and is subjected to external factor that slowly action occurs, and described external factor may be the frictional force of gravity or the parts of parts.Certainly, moving contact is because the impact of himself gravity and the factor that is flexible coupling also can make the moving contact can be slowly near fixed contact.This contact at a slow speed approaches electrically contacting the field and does one's utmost and will avoid, because in closely spaced situation, can puncture between contact, produces electric arc.Can't in time applying then of contact pressure can cause burning of contact.
Because the whole switching motion process of mechanism is all finished within a very short time, thus slowly approaching more difficult being found of first contact meeting with respect to contact of contact, thus also easily out in the cold.Directly affect the electric life of switching device, reduced the reliability of switching device
Summary of the invention
The invention provides a kind of opening limit device of switching device, when power pack is in the switch on of moving contact action storage power process, prevent that moving contact is near the motion of fixed contact.Thereby improve the electric life of switching device, improve the switching device reliability.
A kind of opening limit device of switching device, comprise framework and switching mechanism, framework comprises a pair of symmetrically arranged side plate, switching mechanism comprises main shaft, lever assembly and actuator, main shaft rotates and is arranged between pair of side plates, actuator is fixed on the main shaft, be installed with swing arm on the main shaft, one end of swing arm one end and connecting rod is hinged, and the other end of connecting rod and moving contact are hinged, it is characterized in that: described switching mechanism also includes a stopping means, and this stopping means is arranged on the described side plate and is corresponding with actuator, is used for actuator is locked; And lever assembly drives stopping means, thereby removes stopping means to the locking of actuator.
Described stopping means comprises a locating part and acts on the locating part and the torsion spring of active force is provided to locating part, the locating part hub setting is between described pair of side plates, be installed with one at locating part and hang pin, hanging pin conflicts with the ladder cambered surface of described actuator, locating part has a pushing face, described lever assembly has one second drive rod, and described pushing face cooperates with described the second drive rod pushing of described lever assembly.
Described actuator and described swing arm are designed to one.
Described switching mechanism also comprises power pack and gear assembly, described lever assembly also comprises mounting rod, the first drive rod and brace and the second drive rod, one end of brace connects the first drive rod, and mounting rod is hinged on the other end of brace, and cooperates with the power pack conflict; Described actuator one end offers the first arc groove, and the second drive rod cooperates with the first arc groove axial trough; Gear assembly also comprises driven gear and gear base plate, described driven gear rotates to be arranged on the main shaft and also can rotate relatively freely with main shaft, the gear base plate is fixed on the described driven gear, and the gear base plate is provided with the second arc groove, and the first drive rod cooperates with the second arc groove axial trough.
A kind of opening limit device of switching device, comprise framework and switching mechanism, framework comprises a pair of symmetrically arranged side plate, switching mechanism comprises main shaft, lever assembly and actuator with second drive rod, main shaft rotates and is arranged between pair of side plates, actuator is fixed on the main shaft, be installed with swing arm on the main shaft, one end of swing arm one end and connecting rod is hinged, and the other end of connecting rod and moving contact are hinged, it is characterized in that: described switching mechanism also includes a stopping means, and this stopping means is arranged on the described side plate and is corresponding with the stopper on being installed in main shaft, is used for stopper is locked; And lever assembly drives stopping means, thereby removes stopping means to the locking of stopper.
Described stopping means comprises a locating part and acts on the locating part and to having the locating part of hanging pin provides the torsion spring of active force, the locating part hub setting is between described pair of side plates, hanging pin conflicts with the fastener of described stopper, locating part has a pushing face, and described pushing face cooperates with described the second drive rod pushing of described lever assembly.
Described actuator and described swing arm are designed to one.
Described switching mechanism also comprises power pack and gear assembly; Described lever assembly also comprises mounting rod, the first drive rod, brace and the second drive rod; One end of described brace connects the first drive rod, and mounting rod is hinged on the other end of brace, and cooperates with the power pack conflict; Described actuator one end offers the first arc groove, and the second drive rod cooperates with the first arc groove axial trough; Gear assembly also comprises driven gear and gear base plate, described driven gear rotates to be arranged on the main shaft and also can rotate relatively freely with main shaft, the gear base plate is fixed on the described driven gear, and the gear base plate is provided with the second arc groove, and the first drive rod cooperates with the second arc groove axial trough.
Technical scheme provided by the invention is because the effect of stopping means so that power pack is in the switch on of moving contact action storage power process, can prevent that moving contact is near the motion of fixed contact.Thereby improve the electric life of switching device, improve the switching device reliability.
Description of drawings
Fig. 1 operating mechanism stereogram.
Fig. 2 operating mechanism partial exploded view one.
Fig. 3 operating mechanism partial exploded view two.
The switching mechanism of Fig. 4 operating mechanism drives the moving contact schematic diagram.
Fig. 5 limit shaft sleeve schematic diagram.
Fig. 6 limit assembly work schematic diagram one.
Fig. 7 limit assembly work schematic diagram two.
Fig. 8 limit assembly work schematic diagram three.
The another kind of limit assembly schematic diagram of Fig. 9.
Figure 10 operating mechanism working state figure one.
Figure 11 operating mechanism working state figure two.
Figure 12 operating mechanism working state figure three.
Embodiment
The following examples are specifically related to the operating mechanism of automatic change-over in the switching device (ATSE); if but other switching device has all operations were mechanism identical with following A TSE or part operation mechanism; the structure of expressing with the invention embodiment is identical or approximate; has corresponding technique effect; then do not exceed the invention to the contribution of prior art, belong to equally the protection range of the invention.
Automatic change-over in this programme (ATSE) comprises an integrated operating mechanism, and it is installed on the Switch main body, is specially on the body of automatic change-over.Body interior is provided with dynamic and static contact, and dynamic and static contact is realized closing minute circuit.Operating mechanism drives described dynamic and static contact and finishes and close minute action.
Such as Fig. 1,2, operating mechanism comprises framework 1, switching mechanism 2, gear driven mechanism 3.Switching mechanism 2 and gear driven mechanism 3 are installed on the framework 1.Outside motor-operating mechanism or manpower rotate by the described gear driven mechanism 3 of handle drives, and described gear driven mechanism 3 is rotated rear drive switching mechanisms 2 actions, and the dynamic and static contact of switching mechanism 2 drives is finished and closed, minute action.
Referring to Fig. 1,2, framework 1 comprises the two symmetrical side plates 11 that be arranged in parallel, be positioned at the cover plate 12 of side plate 11 upper and lowers, cover plate takes the shape of the letter U and to lopsidedness, satisfied the need of work of inner energy storage device, side plate 11 and cover plate 12 cooperation places are provided with crimp, and screw fits tightly both by the crimp on side plate 11 and the cover plate 12, form chamber, a rectangle side.Be fixed with the side cover 13 of two symmetries in the outside of pair of side plates 11, side cover 13 forms a cavity volume therebetween after fixing with side plate 11.
Referring to Fig. 2, side plate 11 is provided with bar-shaped trough 111, and bar-shaped trough 111 is unidirectional open slot, and its openend is towards cover plate 12, and blind end is positioned at the middle part of side plate 11 above-below directions.Bar-shaped trough 111 is altogether four, and every block of side plate 11 is provided with back-to-back two, and the bar-shaped trough 111 on the biside plate 11 is symmetrical.The blind end of each bar-shaped trough 111 is provided with a diameter greater than the circle of contact hole 112 of bar-shaped trough 111 width.Circle of contact hole 112 is intersected by a circle with without the straight line of this round heart and is formed, thereby 112 forms a section 1121 in circle of contact hole.Preferably, described bar-shaped trough 111 is vertical setting, corresponding circle of contact hole 112 symmetries on the pair of side plates 11 of framework 1.At this moment, be convenient to the installation of switching mechanism 2.Preferred, cover plate 12 both sides are provided with the first crimp 122, and being positioned at bar-shaped trough 111 both sides on the side plate 11, to be provided with the second crimp 113, the first crimps 122 fastening with the second crimp 113 on the pair of side plates 11, can prevent the distortion of bar-shaped trough 111.
Comprise main shaft 21, lever assembly 22, spring assembly 23, actuator 24, gear assembly 25 and limit assembly 26 referring to Fig. 2,3,4 switching mechanisms 2.Main shaft 21 rotates and is arranged on the biside plate 11 of framework 1.Lever assembly 22 and gear assembly 25 are set on the main shaft 21 and can relatively rotate.Spring assembly 23 1 ends connect lever assembly 22, and the other end is conflicted at the cover plate 12 of framework 1.Gear assembly 25 drives and rotates lever assembly 22 actions that are arranged on the main shaft 21, and lever assembly 22 drives actuator 24 actions that are fixedly installed on the main shaft 21.Switching mechanism 2 is two covers, and two cover switching mechanisms, 2 back-to-back settings are with the dynamic and static contact system of corresponding two covers.
Be fixedly installed the swing arm corresponding with dynamic and static contact system 211 on the main shaft 21, swing arm 211 articulated linkage 200, the moving contact 300 in the connecting rod 200 hinge contact head systems.In four phase automatic change-overs, drive four pieces of swing arms 211 by same main shaft 21, drive again four pieces of connecting rods 200, drive at last four phase moving contacts 300 and synchronously realize the on/off switch action.If the three-phase automatic change-over, then same main shaft 21 drives three pieces of swing arms 211, drives three pieces of connecting rods 200 again, drives at last three-phase moving contact 300 and synchronously realizes the on/off switch action.Main shaft 21 is to be driven by the actuator 24 that sets firmly thereon.Preferred described actuator 24 replaces one piece of swing arm 211 to link to each other with corresponding one piece of connecting rod 200 by change of shape, and namely actuator 24 is adjusted into integrated parts with corresponding one piece of swing arm 211.Equally, actuator 24 drives main shaft 21 and drives other three pieces of swing arms 211, and then drives other three-phase moving contacts 300 by three pieces of connecting rods 200 of correspondence.If the three-phase automatic change-over, then actuator 24 drives main shaft 21 and drives other two pieces of swing arms 211, and then drives other two-phase moving contacts 300 by two pieces of connecting rods 200 of correspondence.
Actuator 24 is a sheet part, and actuator 24 is fixed on the main shaft 21, this kind fixed relationship so that actuator 24 rotate synchronously with main shaft 21.Actuator 24 1 ends connect an end of connecting rod 200, and connecting rod 200 other ends connect moving contact 300.But certain also 24 drive main shafts 21 of actuator, main shaft 21 drives swing arms 211, drives moving contact 300 by connecting rod 200.Actuator 24 other ends offer the first arc groove 241, the first arc groove 241 is used for cooperating by the second drive rod 224 and with the rotary motion trace of the second drive rod 224, that is, the second drive rod 224 probes in the first arc groove 241, and cooperates with the first arc groove 241 axial troughs.The contravention that balances or cancel each other that is specially the first arc groove 241 ends cooperates with the second drive rod 224.This kind structural relation is so that brace 223 drives the second drive rod 224 when rotating, after conflicting end, the second drive rod 224 contacts the first arc groove 241 1 can drive actuator 24 around main shaft 21 center rotatings, and then drivening rod 200 motions, finally drive moving contact 300 and realize closing a minute action.
Gear assembly 25 comprises driven gear 251, gear base plate 252 and limit shaft sleeve 253.Described driven gear 251 is fixed as one with gear base plate 252.Described being fixed as one can realize by the kinds of processes approach, and example is welded and fixed technique, pin technique for fixing, Tenon technique for fixing.Gear base plate 252 is provided with the second arc groove 2521, the second arc grooves 2521 and cooperates with the first drive rod 222.The first concrete drive rod 222 passes the circular arc chamber of side plate 11 and probes in the second arc groove 2521, and the second arc groove 2521 cooperates with the rotation track of the first drive rod 222, and namely the first drive rod 222 cooperates with the second arc groove 2521 axial troughs.Two abutting ends that are specially the second arc groove 2521 ends cooperate with the first drive rod 222.Certainly, described the second arc groove 2521 can directly be opened on the driven gear 251, at this moment, then need not base plate 252.Such as Fig. 5, described limit shaft sleeve 253 is comprised of cylinder 2531 and cap 2532.Be provided with tangent plane 25321 at described cap 2532, after this cap 2532 was fitted with circle of contact hole 112, tangent plane 25321 was fitted with the section 1121 in circle of contact hole 112, thereby described limit shaft sleeve 253 can not rotate relative to side plate 11.Driven gear 251 is set on the limit shaft sleeve 253 with gear base plate 252, but gear base plate 252 can contact with cylinder 2531, and limit shaft sleeve 253 is set on the main shaft 21, and driven gear 251, gear base plate 252 and limit shaft sleeve 253 can relatively rotate.Described cap 2532 so that the driven gear 251 that is fixed as one and gear base plate 252 in rotation, be attached on the cap 2532, and do not rub mutually with side plate 11 outsides.
The mounting structure of switching mechanism 2 is: the two ends of main shaft 21 in the switching mechanism 2 are insinuated into 112 inside, circle of contact hole along a pair of bar-shaped trough 111 on the pair of side plates 11, from the side plate periphery gear assembly 25 is installed to the two ends of main shaft 21, the limit shaft sleeve 253 on the gear assembly 25 closely engages with circle of contact hole 112 again.Thereby so that main shaft 21 can not about, seesaw.Certainly, the existence of limit shaft sleeve 253 not necessarily, does not add limit shaft sleeve 253 for the installation of driven gear 251 and gear base plate 252, and then driven gear 251 directly rotates and is arranged on the main shaft 21.
Such as Fig. 2,6,7,8,9, limit assembly 26 is interpreted as a cover additional structure, and it is so that switching mechanism 2 switching mechanism 2 when realizing that changing rotation does itself is in stable state.Concrete, from gate-dividing state moving contact 300 drives are crossed the Cheng Qian to "on" position in switching mechanism 2, limit assembly 26 acts on actuator 24 outer rims, thereby the second drive rod 224 is in the first arc groove 241 interior moving process, limit assembly 26 stabilized driving parts 24 are in initial condition, thereby guarantee that main shaft 21 is stable at initial position, finally keep moving contact 300 to be in gate-dividing state.Be to lock moving contact 300 by the motion that limits actuator 24 in above-mentioned process, yet actuator 24 is fixed relationships with main shaft 21, synchronous rotation occurs with main shaft 21 in actuator 24.If then by the rotation of locking main shaft 21, also can lock the action of moving contact 300.For example, set firmly the stopper (not marking on the figure) that cooperates with limit assembly 26 at main shaft 21, limit assembly 26 locking stoppers, concrete, limit assembly 26 is conflicted with the fastener of described stopper, also can play identical function.Limit assembly 26 cooperates with the restriction of actuator 24 and can realize by following arbitrary scheme.
The first scheme, described limit assembly 26 is made of a locating part 261 and a torsion spring 262, and the centre of gyration of described torsion spring 262 is located between the side plate 11 by an axle, for example, is provided with an axle between pair of side plates 11, and the centre of gyration of torsion spring 262 is enclosed within on this axle.Locating part 261 is a sheet material, and locating part 261 hub settings are between pair of side plates 11.Preferably, locating part 261 and the torsion spring 262 same centres of gyration, namely locating part 261 and torsion spring 262 hub settings are on same hub setting axle 100.Be installed with one on the locating part 261 and hang pin 2611, be used for conflicting with an abutment end of torsion spring 262, certainly the above-mentioned abutment end of torsion spring 262 also can directly be conflicted on spacing 261 by the mode of bending in another kind of distressed structure, and another abutment end of torsion spring 262 is conflicted on the fixed part on the side plate 11.For automatic change-over, owing to there being a pair of limit assembly 26 corresponding with the switching mechanism 2 of a pair of back-to-back setting, and the centre of gyration of locating part 261 and torsion spring 262, also can be described as hub setting is centered close between the two cover switching mechanisms 2, at this moment, another abutment end of torsion spring 262 can be conflicted on the extension pin 2611 on the locating part 261 of another set of switching mechanism 2.Hanging pin 2611 conflicts with the ladder cambered surface 243 on the described actuator 24.The pushing face 2612 of locating part 261 cooperates with 224 pushings of the second drive rod.The pushing cooperation refers to, when the second drive rod 224 turns to assigned address, namely the second drive rod 224 turns in described the first arc groove 241 in the process of a conflict end, it at first contacts with pushing face 2612, then, to push again face 2612 and release, thereby the extension pin 2611 of locating part 261 will be pushed away actuator 24.Because a pair of switching mechanism 2 of back-to-back setting in the whole course of work, push the pushing face 2612 of locating parts 261 when the second drive rod 224 of a cover switching mechanism 2, thereby extension pin 2611 breaks away from actuator 24, actuator 24 is rotatable; In this process, the actuator 24 of another set of switching mechanism 2 is in stable state, and namely its extension pin 2611 is in stable state equally.As from the foregoing, hang the rotation that pin 2611 can stop actuator 24, release actuator 24 until the second drive rod 224 will be hung pin 2611 by locating part 261.Thereby guarantee that actuator 24 is in initial position in the spacing process of limit assembly 26, namely do not rotate, thereby keep moving contact 300 to be in the state that separates with fixed contact 400.Prevent in brace 223 swing process, actuator 24 self rotates and then the situation of moving contact 300 close fixed contacts 400 occurs.
In the alternative plan, specifically see Fig. 9, in this scheme, have equally the parts of top embodiment, difference is: the centre of gyration of locating part 261 and torsion spring 262 is positioned at the top of actuator 24.Accordingly, the shape of locating part 261 adjusts, to cooperate the movement locus of actuator 24 and the second drive rod 224.
In addition in above-mentioned scheme, be installed in stopper on the main shaft 21 in conjunction with what the front was talked about, concrete, not-go end position part 261 interacts with actuator 24 and locks main shaft 21, and cooperate by the fastener on the stopper in the scheme of stopping means 26, the extension pin 2611 of locating part 261 cooperates with fastener, and described fastener has the structure identical with above-mentioned ladder cambered surface 243.Concrete engagement process is identical with alternative plan with above-mentioned the first scheme, no longer describes.
The below is with regard to the closing keeping device of switching device, and the closing keeping device that is specially automatic change-over is described in detail.
Continuation is referring to Fig. 6,7,8, and swing arm 211 is fixedly installed with main shaft 21, and namely swing arm 211 rotates synchronously with main shaft 21.One end of swing arm 211 1 end articulated linkage 200, and the hinged moving contact 300 of connecting rod 200 other ends are specially the moving contact rack 302 of moving contact 300.Also comprise the relative acting arm 301 that swings of moving contact rack 302 on the moving contact 300,302 of acting arm 301 and moving contact racks are provided with the touch spring (not shown).Moving contact 300 rotates around it axle and rotates.The annexation of above-mentioned parts, so that the fixed range between the center of rotation of the center of rotation of swing arm 211, connecting rod 200, moving contact 300 and moving contact 300 and main shaft 21, form a four-bar linkage structure, rotate counterclockwise in the process at swing arm 211, it promotes connecting rod 200 motions, and promotes moving contact 300 to fixed contact 400 swings.Swing arm 211 is with to be arranged in swing arm 211 outside and be fixed on gear shaft 242 collisions on the side plate 11 and the process that stops operating, the first pin joint O2 between swing arm 211 and the connecting rod 200 is through the center of rotation O1 of main shaft 21 and connecting rod 200 is biased in above-mentioned line behind the line of the second pin joint O3 on the moving contact rack 302 a side, and form one with the center of rotation O1 of main shaft 21 and the obtuse angle of the formation of the line between the line between the first pin joint O2 and the first pin joint O2 and the second pin joint O3, the fixed point at this obtuse angle is the first pin joint O2, after forming the obtuse angle, the touch spring compression.In forming above-mentioned obtuse angle process, need to be through a balance point, namely the first pin joint O2 between swing arm 211 and the connecting rod 200 is positioned at the center of rotation O1 of main shaft 21 and connecting rod 200 on the line of the second pin joint O3 on the moving contact rack 302.On this balance point, distance between the center of rotation O1 of the second pin joint O3 and main shaft 21 farthest, at this moment, because the fixed contact 400 that cooperates with described moving contact 300 is installed on the automatic switch body, the touch spring of moving contact 300 inside is subjected to fixed contact 400 by the extruding of acting arm 301, and the touch spring compression is maximum.Through this balance point, just form above-mentioned obtuse angle between swing arm 211 and the connecting rod 200.After forming the obtuse angle, the compression of the touch spring of moving contact 300 inside is alleviated.In practice, be advisable at 172 ° to 175 ° in described obtuse angle.Owing to the existence at this obtuse angle, if then without applied external force, above-mentioned obtuse angle state is maintained in said process, and namely the "on" position of dynamic and static contact is kept.
As aforementioned, drive one piece of connecting rod 200 at actuator 24, one piece of connecting rod 200 drives a phase moving contact 300, actuator 24 driving main shaft 21, main shaft 21 drives 200, three pieces of connecting rods of 211, three pieces of swing arms of other three pieces of swing arms, 211 three pieces of connecting rods of driving 200 and drives in the situation of moving contacts 300, the situation that actuator 24 drivening rods 200 are arranged, and then drive moving contact 300 remains on above-mentioned "on" position.Thereby, fixed range between the center of rotation of above-mentioned swing arm 211, connecting rod 200, moving contact 300 and moving contact 300 and the center of rotation of main shaft 21, the four-bar linkage structure that forms, be changed to the fixed range between the center of rotation of the center of rotation of actuator 24, connecting rod 200, moving contact 300 and moving contact 300 and main shaft 21, formed four-bar linkage structure.Certainly because actuator 24 is different with the shape of swing arm 211, the position of the gear shaft 242 of corresponding actuator 24 is different.As aforementioned, actuator 24 can replace one piece of swing arm 221, i.e. parts of actuator 24 and one piece of swing arm 211 being integrally formed, and " " font namely has two connecting levers to ㄑ to be specially one.Corresponding gear shaft 242 can be set as and cooperate arbitrary connecting lever, can realize its barrier effect.Such as Fig. 8, be up and down two positions of having illustrated gear shaft 242 to cooperate actuator 24.
Such as Fig. 1,2, described gear driven mechanism 3 comprises a rotating shaft 31, and rotating shaft 31 connects described pair of side plates 11 and can realize relatively rotating, in rotating shaft 31 and be positioned at biside plate 11 outsides and be provided with a pair of driving gear 32.Driven gear 251 in the gear assemblies 25 in described driving gear 32 and the above-mentioned two cover switching mechanisms 2 meshes simultaneously, this kind engagement is omnidistance engagement, namely in the course of action of operating mechanism, arbitrary driving gear 32 meshes with two driven gears 251 that are mated all the time.Described driving gear 32 and driven gear 251 be not requirement be full-depth tooth; as long as in its work slewing area separately; both can mesh; namely reached the specification requirement of this programme; belong to identical technological means and realize identical technique effect; solve identical technical problem, thereby belong to the protection range of equivalence.
Above-mentioned whole process engagement, so that driving gear 32 is in engagement with driven gear 251 all the time, thereby the external impetus of operating mechanism has increased the reliability of transmission all the time by driving gear 32 and driven gear 251 interlocks.
For so that operating mechanism itself can match with the power mode that applies of outside, described rotating shaft 31 has different structures in the outside of stretching out described pair of side plates 11.A concrete side of stretching out described pair of side plates 11 in rotating shaft 31 is provided with the operating portion 311 that cooperates with manual-operating mechanism.And be provided with the abutting end that matches with motor-operating mechanism at the opposite side that main shaft stretches out described pair of side plates 11.
As it is as follows to scheme whole operating mechanism process:
Such as Figure 10,11,12, be two cover switching mechanisms 2, the switching mechanism 2 on top is switching mechanism commonly used, the switching mechanism 2 of bottom is switching mechanism for subsequent use.In the following narration, the unit number of switching mechanism commonly used is not with " ` "; The unit number band of switching mechanism for subsequent use " ` ".
Among Figure 10, automatic change-over is in open position, and namely normal (standby) do not carry moving contact 300 and fixed contact 400 closures with switching mechanism.External force (manpower or electric operating) drives driving gear 32 and clockwise rotates, driving gear 32 drives driven gear 251 again and rotates counterclockwise, driven gear 251 carries gear base plate 252 and rotates counterclockwise together, the abutting end of the second arc groove 2521 on the gear base plate 252 drives the first drive rod 222 and rotates, while compression spring assembly 23, when the first drive rod 222 arrives mechanical dead point, namely on the line of the centre of gyration of the centre of gyration that is centered close to main shaft 21 commonly used of the first drive rod 222 and the first matching seat 232.When this machinery dead point, spring assembly 23 energy storage reach maximization, and simultaneously, the second drive rod 224 that is positioned at described the first arc groove 241 1 conflict ends is held by brace 223 drives to the first arc groove 241 another conflicts that the first drive rod 222 drives.In case the first drive rod 222 is crossed this machinery dead point, the motion energy of switching mechanism 2 is provided by spring assembly 23.Spring assembly 23 delivered energy are specially promotion the first drive rod 222 and continue to rotate counterclockwise, and the first drive rod 222 is in the 2521 interior rotations of described the second arc groove.Synchronous, the second drive rod 224 promotes actuator 24 and rotates counterclockwise.Related, actuator 24 rotates main shaft 21, and carries out closing motion by connecting rod 200 drive moving contacts 300, until rotate in place.Described rotateing in place refers to, gear shaft 242 collisions of actuator 24 and peripheral hardware, and actuator 24 reaches poised state with connecting rod 200 simultaneously, i.e. above-mentioned combined floodgate hold mode.
When feed motion was finished in above-mentioned switching mechanism commonly used, certain conversion is also occuring synchronously in switching mechanism for subsequent use, is specially: driving gear 32 clockwise rotated, and drove driven gear 251` and rotated counterclockwise.The second arc groove 2521` of gear base plate 252` follows rotation.Because when initial, the first drive rod 222` is positioned at the upper end of the second arc groove 2521`, rotating counterclockwise of relative the first drive rod 222` occurs in the second arc groove 2521`, and be relative, and the first drive rod 222` is motionless, until the lower end of close the second arc groove 2521`.
After often (standby) finishes above-mentioned switching motion with switching mechanism, enter the state of Figure 11, i.e. switching mechanism commonly used is in "on" position, and relative, switching mechanism for subsequent use is in gate-dividing state.
Such as Figure 11, lower step action is as follows, external force (manpower or motor-operating mechanism) drives driving gear 32 and rotates counterclockwise, driving gear 32 drives driven gear 251 again and clockwise rotates, driven gear 251 carries gear base plate 252 and clockwise rotates together, the abutting end of the second arc groove 2521 on the gear base plate 252 drives the first drive rod 222 and rotates simultaneously compression spring assembly 23, when the first drive rod 222 arrives mechanical dead point, namely on the line of the centre of gyration of the centre of gyration that is centered close to main shaft 21 commonly used of the first drive rod 222 and the first matching seat 232.When this machinery dead point, spring assembly 23 energy storage reach maximization, and simultaneously, the second drive rod 224 that is positioned at described the first arc groove 241 1 conflict ends is held by brace 223 drives to the first arc groove 241 another conflicts that the first drive rod 222 drives.In case the first drive rod 222 is crossed this machinery dead point, the motion energy of switching mechanism 2 is provided by spring assembly 23.Spring assembly 23 delivered energy are specially promotion the first drive rod 222 and continue to clockwise rotate, and the first drive rod 222 is in the 2521 interior rotations of described the second arc groove.Synchronous, the second drive rod 224 promotes actuator 24 and clockwise rotates.Related, actuator 24 rotates main shaft 21, and cut-offs motion by connecting rod 200 drive moving contacts 300, until rotate in place.Described rotateing in place refers to, gear shaft 242 collisions of actuator 24 and peripheral hardware.At this moment, the position-limiting action when (such as Fig. 9) gear shaft 242 plays separating brake and puts in place namely stops clockwise rotating of actuator 24.Certainly can play simultaneously the spacing effect spacing with combined floodgate of separating brake by shape one gear shaft 242 of adjusting actuator 24.Referring to Fig. 6, if above-mentioned switching mechanism commonly used is provided with supporting limit assembly 26, after then separating brake puts in place, triggers limit assembly 26 and realize its spacing effect, the whereabouts that prevents actuator 24.
When the separating brake action that above-mentioned switching mechanism commonly used is finished, certain conversion is also occuring synchronously in switching mechanism for subsequent use, is specially: driving gear 32 rotates counterclockwise, and drives driven gear 251` and clockwise rotates.The second arc groove 2521` of gear base plate 252` follows rotation.Because when initial, the first drive rod 222` is positioned at the lower end of the second arc groove 2521`, clockwise rotating of relative the first drive rod 222` occurs in the second arc groove 2521`, and be relative, and the first drive rod 222` is motionless, until the upper end of close the second arc groove 2521`.The miscellaneous part attonity.
After normal (standby) finishes said process with switching mechanism, entered again the state of Figure 10 by the state of Figure 11, i.e. switching mechanism commonly used drives moving contact 300 and enters gate-dividing state from "on" position, and switching mechanism for subsequent use does not drive moving contact 300 actions.
External force (manpower or motor-operating mechanism) drives driving gear 32 and rotates counterclockwise, driving gear 32 drives driven gear 251 and driven gear 251` clockwise rotates, drive switching mechanism for subsequent use and carry out feed motion, and the main shaft of switching mechanism commonly used does not rotate.Because switching mechanism commonly used and the back-to-back setting of switching mechanism for subsequent use, its structure is identical, and course of action is identical, therefore no longer repeats.After finishing above-mentioned action, operating mechanism is entered the state of Figure 12 by Figure 10 state, i.e. switching mechanism for subsequent use drives coupled moving contact 300 and closes a floodgate, and switching mechanism commonly used keeps moving contact 300 in gate-dividing state.
Under the state of Figure 12, external force (manpower or motor-operating mechanism) drives driving gear 32 and clockwise rotates, and then operating mechanism is returned the state of Figure 10 by the state of Figure 12.
Above-mentioned Four processes has consisted of operating mechanism Four processes at work, also is the Four processes of automatic change-over work simultaneously.Realized normal (standby) with the conversion between the power supply, and had between the conversion and divide first the characteristics of closing afterwards, satisfied the job requirement of automatic change-over.
The more important thing is, two group of first arc groove by being positioned at switching mechanism inside (241,241`) and the second arc groove (2521,2521`) have been realized dividing afterwards first closing in-house.
Because lever assembly 22, actuator 24, the gear assembly 25 of the switching mechanism 2 of the operating mechanism inside of automatic change-over all are located on the main shaft 21, so that in the switching mechanism 2 except spring assembly 23, all move around main shaft 21, effectively dwindled taking up room of switching mechanism 2, so that the operating mechanism of automatic change-over is simple in structure, compact.Again and, because gear driven mechanism 3 meshes two cover switching mechanisms 2 simultaneously, with respect to link component, it has output steadily, actuating force changes little advantage
Claims (8)
1.
A kind of opening limit device of switching device, comprise framework (1) and switching mechanism (2), framework (1) comprises a pair of symmetrically arranged side plate (11), switching mechanism (2) comprises main shaft (21), lever assembly (22) and actuator (24), main shaft (21) rotates and is arranged between pair of side plates (11), actuator (24) is fixed on the main shaft (21), be installed with swing arm (211) on the main shaft (21), one end of swing arm (211) one ends and connecting rod (212) is hinged, and the other end and the moving contact of connecting rod (212) are hinged, it is characterized in that: described switching mechanism (2) also includes a stopping means (26), it is upper and corresponding with actuator (24) that this stopping means (26) is arranged on described side plate (11), is used for actuator (24) is locked; And lever assembly (22) drives stopping means (26), thereby removes stopping means (26) to the locking of actuator (24).
2.
The opening limit device of a kind of switching device according to claim 1, it is characterized in that described stopping means (26) comprises a locating part (261) and act on locating part (261) upward and provide the torsion spring (262) of active force to locating part (261), locating part (261) hub setting is between described pair of side plates (11), be installed with one at locating part (261) and hang pin (2611), hanging pin (2611) conflicts with the ladder cambered surface (243) of described actuator (24), locating part (261) has a pushing face (2612), described lever assembly (22) has one second drive rod (224), and described pushing face (2612) cooperates with described the second drive rod (224) pushing of described lever assembly (22).
3.
The opening limit device of a kind of switching device according to claim 1 is characterized in that described actuator (24) and described swing arm (211) are designed to one.
4.
The opening limit device of a kind of switching device according to claim 1, it is characterized in that described switching mechanism (2) also comprises power pack (23) and gear assembly (25), described lever assembly (22) also comprises mounting rod (221), the first drive rod (222) and brace (223) and the second drive rod (224), one end of brace (223) connects the first drive rod (222), mounting rod (221) is hinged on the other end of brace (223), and cooperates with power pack (23) conflict; Described actuator (24) one ends offer the first arc groove (241), and the second drive rod (224) cooperates with the first arc groove (241) axial trough; Gear assembly (25) also comprises driven gear (251) and gear base plate (252), described driven gear (251) rotation is arranged on main shaft (21) upward and can rotates relatively freely with main shaft (21), gear base plate (252) is fixed on the described driven gear (251), gear base plate (252) is provided with the second arc groove (2521), and the first drive rod (222) cooperates with the second arc groove (2521) axial trough.
5.
A kind of opening limit device of switching device, comprise framework (1) and switching mechanism (2), framework (1) comprises a pair of symmetrically arranged side plate (11), switching mechanism (2) comprises main shaft (21), lever assembly (22) and actuator (24) with the second drive rod (224), main shaft (21) rotates and is arranged between pair of side plates (11), actuator (24) is fixed on the main shaft (21), be installed with swing arm (211) on the main shaft (21), one end of swing arm (211) one ends and connecting rod (212) is hinged, and the other end and the moving contact of connecting rod (212) are hinged, it is characterized in that: described switching mechanism (2) also includes a stopping means (26), it is upper and corresponding with the stopper on being installed in main shaft (21) that this stopping means (26) is arranged on described side plate (11), is used for stopper is locked; And lever assembly (22) drives stopping means (26), thereby removes stopping means (26) to the locking of stopper.
6.
The opening limit device of a kind of switching device according to claim 5, it is characterized in that described stopping means (26) comprises a locating part (261) and act on locating part (261) upward and provide the torsion spring (262) of active force to the locating part (261) with extension pin (2611), locating part (261) hub setting is between described pair of side plates (11), hanging pin (2611) conflicts with the fastener of described stopper, locating part (261) has a pushing face (2612), and described pushing face (2612) cooperates with described the second drive rod (224) pushing of described lever assembly (22).
7.
The opening limit device of a kind of switching device according to claim 5 is characterized in that described actuator (24) and described swing arm (211) are designed to one.
8.
The opening limit device of a kind of switching device according to claim 5 is characterized in that described switching mechanism (2) also comprises power pack (23) and gear assembly (25); Described lever assembly (22) also comprises mounting rod (221), the first drive rod (222), brace (223) and the second drive rod (224); One end of described brace (223) connects the first drive rod (222), and mounting rod (221) is hinged on the other end of brace (223), and cooperates with power pack (23) conflict; Described actuator (24) one ends offer the first arc groove (241), and the second drive rod (224) cooperates with the first arc groove (241) axial trough; Gear assembly (25) also comprises driven gear (251) and gear base plate (252), described driven gear (251) rotation is arranged on main shaft (21) upward and can rotates relatively freely with main shaft (21), gear base plate (252) is fixed on the described driven gear (251), gear base plate (252) is provided with the second arc groove (2521), and the first drive rod (222) cooperates with the second arc groove (2521) axial trough
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582412.1A CN103065832B (en) | 2012-12-28 | 2012-12-28 | Switch-off limit device of switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210582412.1A CN103065832B (en) | 2012-12-28 | 2012-12-28 | Switch-off limit device of switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103065832A true CN103065832A (en) | 2013-04-24 |
| CN103065832B CN103065832B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210582412.1A Active CN103065832B (en) | 2012-12-28 | 2012-12-28 | Switch-off limit device of switching device |
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| CN (1) | CN103065832B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167307A (en) * | 2019-04-29 | 2019-08-23 | 苏州飞腾电器有限公司 | A kind of circuit interlocking gear |
| CN111739745A (en) * | 2020-06-03 | 2020-10-02 | 深圳市泰永电气科技有限公司 | Switching device and switching device self-locking device thereof |
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| JPH0334226A (en) * | 1989-06-29 | 1991-02-14 | Mitsubishi Electric Corp | Operating mechanism of interlock switch |
| CN1521781A (en) * | 2003-01-29 | 2004-08-18 | 广州霍斯通电气有限公司 | Switching device with a movement limiting unit |
| WO2005031779A1 (en) * | 2003-09-25 | 2005-04-07 | Siemens Aktiengesellschaft | Drivetrain for at least one moving contact on an electrical switch and current-limiting electrical switch with a drivetrain |
| CN101777440A (en) * | 2009-12-24 | 2010-07-14 | 黄勤飞 | Driving device for actuating mechanism |
| CN202977228U (en) * | 2012-12-28 | 2013-06-05 | 常熟开关制造有限公司(原常熟开关厂） | Switch-off limit device of switching device |
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| JPH0334226A (en) * | 1989-06-29 | 1991-02-14 | Mitsubishi Electric Corp | Operating mechanism of interlock switch |
| CN1521781A (en) * | 2003-01-29 | 2004-08-18 | 广州霍斯通电气有限公司 | Switching device with a movement limiting unit |
| WO2005031779A1 (en) * | 2003-09-25 | 2005-04-07 | Siemens Aktiengesellschaft | Drivetrain for at least one moving contact on an electrical switch and current-limiting electrical switch with a drivetrain |
| CN101777440A (en) * | 2009-12-24 | 2010-07-14 | 黄勤飞 | Driving device for actuating mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110167307A (en) * | 2019-04-29 | 2019-08-23 | 苏州飞腾电器有限公司 | A kind of circuit interlocking gear |
| CN111739745A (en) * | 2020-06-03 | 2020-10-02 | 深圳市泰永电气科技有限公司 | Switching device and switching device self-locking device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103065832B (en) | 2015-03-25 |
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