CN1047461C - Device for tensioning the cut-in spring in actuator units for circuit breakers, in particular vacuum circuit breakers - Google Patents
Device for tensioning the cut-in spring in actuator units for circuit breakers, in particular vacuum circuit breakers Download PDFInfo
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- CN1047461C CN1047461C CN95192542A CN95192542A CN1047461C CN 1047461 C CN1047461 C CN 1047461C CN 95192542 A CN95192542 A CN 95192542A CN 95192542 A CN95192542 A CN 95192542A CN 1047461 C CN1047461 C CN 1047461C
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- way clutch
- combined floodgate
- sleeve
- rotating shaft
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/227—Interlocked hand- and power-operating mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/3021—Charging means using unidirectional coupling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H2003/3084—Kinetic energy of moving parts recuperated by transformation into potential energy in closing or opening spring to be used in next operation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence
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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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Gear Transmission (AREA)
- Transmission Devices (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Mechanical Operated Clutches (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Mechanisms For Operating Contacts (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
The invention concerns a device for tensioning the cut-in spring in actuator units for circuit breakers, in particular vacuum circuit breaker, the cut-in spring (7) being designed as a tensioning spring which is in contact with a cam (2) mounted on the cut-in shaft (5) and which can be tensioned both by an electric motor (20) and by a hand-turned shaft (21) through a spur-gear train, the last spur gearwheel (1) also being mounted on the cut-in shaft (5). The aim of the invention is to design a tensioning device in which the spur-gear train operates without overrunning, and reversing of the cam (2) is prevented or limited by the cut-in spring (7). This is achieved by virtue of the fact that the last spur gearwheel (1) in the spur-gear train is disposed over an overrunning bearing (6) on the cut-in shaft (5) in such a way that, when cut-in spring tensioning begins, the cam (2) and hence also the cut-in shaft (5), are carried directly by the last spur gearwheel (1) out of a position in which they are located past the bottom dead centre position (9) of the shaft (5) as the cam (2) rotates upwards, while, during the cut-in phase, the last spur gearwheel (1) is locked in position, when the cut-in shaft (5) turns through bottom dead centre (9), by the overrunning bearing (6) and by the operative connection with the other spur gearwheels in the spur-gear train.
Description
The present invention relates to a kind of tensioning circuit-breaker, the device that switching-in spring is used in the drive unit of vacuum circuit-breaker particularly, in said apparatus, the switching-in spring that is designed to extension spring is connected on the eccentric block that is fixed in the combined floodgate rotating shaft, it both can be with a motor tensioning, also can be by gear drive with a manual tensioning shaft tensioning, last gear of said gear transmission device also can be installed in the combined floodgate rotating shaft, the pallet that begins making process by means of the combined floodgate rotating shaft also is housed in the combined floodgate rotating shaft, and the cam bit that links to each other with the operation of combined floodgate lever.
In electric switchgear, that is,, particularly in the vacuum circuit-breaker, when finishing making process, make vacuum circuit-breaker be ready to making process next time, so that guarantee that a logical switching sequence that breaks is very important at primary cut-out.This will rely on the switching-in spring that produces making process to be tensioned again after finishing this making process, so just can be ready to making process next time.In these a series of processes, the switching-in spring of the drive unit of known vacuum circuit-breaker is to be connected on the eccentric block that is contained in the combined floodgate rotating shaft, like this, when the pallet on also being mounted in the combined floodgate rotating shaft unclamps, owing to be designed to the effect of the switching-in spring of extension spring, the cam bit that also is arranged in the combined floodgate rotating shaft rotates in the processes of about 180 degree at it, force the combined floodgate lever motion that links together with cam bit in the operation to the corresponding position of above-mentioned link position on.
The preparation that the switching-in spring that is designed to extension spring is done for making process next time, promptly, its tensioning process can be used, for example, disclosed in the data of VEM company " built-in low oil level circuit-breaker " (VEB switching device document,, Hn/65/77-10000-7.77-IV/1/17-565) finish in April, 1976 in Moscow.In this circuit-breaker, by means of connect a control voltage to a motor, rotate a ratchet by the transmission device that a push rod is worked, make off-centre be installed in the switching-in spring tensioning on this ratchet.According to DD 296 378 A5, this transmission device also is used for handling the switch contact that moves of high voltage switching device.
In the transmission device that known vacuum circuit-breaker is used, above-mentioned switching-in spring is connected on the eccentric block that is installed in the combined floodgate rotating shaft, the transmission device that is arranged between motor and the combined floodgate rotating shaft is a gear drive, and last spur gear of this transmission device is rotatably assorted with pine and is installed in the combined floodgate rotating shaft.In this transmission device, if the pallet that is arranged in the combined floodgate rotating shaft is released, so above-mentioned eccentric block, and combined floodgate rotating shaft and cam bit will rotate about 180 ° together owing to being bound up on the unclamping of switching-in spring that is tensioned on the pallet.In the sequence of motion of this combined floodgate rotating shaft, above-mentionedly be installed in eccentric block in this rotating shaft owing to kinergety is crossed the pallet of a non-return block, so above-mentioned switching-in spring in this order by part tensioning again.When the combined floodgate rotating shaft was reversed, eccentric block is and then counter-rotating also, and the switching-in spring of above-mentioned part tensioning is released again, and combined floodgate rotating shaft and eccentric block are quickened towards opposite direction together, exactly, turned to eccentric block always and was blocked by the non-return block.
In this known transmission device, now, be ready to making process next time in order to make switching-in spring, last gear that is installed in the gear drive in the combined floodgate rotating shaft with Song Zhuanhe has a projection in the scope of above-mentioned combined floodgate rotating shaft, this projection is extended vertically, is fan-shaped.Above-mentionedly be fan-shaped projection of changeing with pine on the spur gear that closes installation, after crossing an idling region, be parked in a drive pin place that is connected securely in the combined floodgate rotating shaft, drive above-mentioned combined floodgate rotating shaft, thereby also drive eccentric block and turn over one 180 ° again, so above-mentioned switching-in spring just is in tensioning state, make vacuum circuit-breaker be ready to making process next time.
The use of each position that above-mentioned combined floodgate rotating shaft and eccentric block are stopped and incomplete and motor links together, on the contrary, combined floodgate rotating shaft and eccentric block and be installed in pallet in the combined floodgate rotating shaft, except can be by the motor driven, even can operate the said gear transmission device by means of a manual tensioning shaft, just be installed in last spur gear in this combined floodgate rotating shaft, during with the above-mentioned switching-in spring of tensioning, also can rest on these positions.The additional structure of above-mentioned manual tensioning shaft is necessary for inspection work not only, also needs for the controller of many vacuum circuit-breakers.
The purpose of this invention is to provide a kind of circuit breaker that is used to be stretched in, the device of the switching-in spring in the drive unit of vacuum circuit-breaker particularly, in this device, the switching-in spring that is designed to extension spring is connected on the eccentric block that is contained in the combined floodgate rotating shaft, both can use the motor tensioning, also can come tensioning by gear drive with a manual tensioning shaft.Last gear of gear drive also is installed in the combined floodgate rotating shaft, in the combined floodgate rotating shaft, also pallet is housed so that begin a making process by means of the combined floodgate rotating shaft, cam bit also is housed in the combined floodgate rotating shaft, the action of the action of this cam bit and combined floodgate lever links together, in this device, not idle running in the course of work of gear drive, and can prevent or limit the recoil of eccentric block behind combined floodgate with switching-in spring, the combined floodgate pallet that can also avoid being connected in the combined floodgate rotating shaft in the next making process of preparing circuit breaker is stuck.
According to the present invention, for achieving the above object, the invention provides the device that the switching-in spring in the drive unit in a kind of the tensioning circuit breaker, particularly vacuum circuit-breaker is used, it comprises: a combined floodgate rotating shaft (5), an eccentric block (2) that is fixed in the above-mentioned combined floodgate rotating shaft; Be installed in last gear (1,18) on the gear drive in the above-mentioned combined floodgate rotating shaft; One is fixed in the above-mentioned combined floodgate rotating shaft, for controlling the pallet (4) that making process is used; One is fixed in the above-mentioned combined floodgate rotating shaft, the cam bit (3) that the action of its action and a combined floodgate lever links together, and be designed to extension spring, be connected the switching-in spring (7) on the above-mentioned eccentric block; It is characterized in that, last gear of said gear transmission device (1,18) is installed in the above-mentioned combined floodgate rotating shaft (5) by means of an one-way clutch bearing (6), this one-way clutch bearing (6) is in making process, be that switching-in spring (7) is converted to relaxed state from tensioning state, when eccentric block rotates downwards from the top, be in not drive state, and in preparing making process, be that switching-in spring (7) is converted to tensioning state from relaxed state, when eccentric block rotates upward from the below, be in drive state.
Last gear of gear drive is installed in the combined floodgate rotating shaft by this way by an one-way clutch bearing: when switching-in spring begins tensioning, above-mentioned eccentric block, thereby the rotating shaft of just closing a floodgate, can be by last gear drive, directly turn over residing after bottom dead center position setting in motion in the combined floodgate rotating shaft along eccentric block rotation direction upward from the two, simultaneously, in making process, when the combined floodgate rotating shaft was in the stage of the rotation process beyond its lower dead center, above-mentioned last gear was locked on its position operational the contact by other gears of unidirectional clutch support and it and gear drive.
In this case, if above-mentioned one-way clutch bearing is made up of an effective one-way clutch mechanism and each block bearing of two ends, and these two block bearings are arranged in the both sides of above-mentioned one-way clutch mechanism, so, for bonding to the long-term functional reliability of clutch support, thereby long-term useful life of the drive unit of this circuit-breaker just, do suiting like this.Two block bearings of above-mentioned one-way clutch mechanism and this one-way clutch bearing preferably all are needle bearings, can certainly adopt any other bearing, can not reduce the function of one-way clutch bearing.
In the further improved device of a process of the present invention, the interior ring of the one-way clutch mechanism of above-mentioned one-way clutch bearing is to form on the external peripheral surface of combined floodgate rotating shaft, the diameter of the needle roller of above-mentioned one-way clutch mechanism is less than the distance between the inner periphery of the outer shroud of the external peripheral surface of combined floodgate rotating shaft and one-way clutch mechanism, and arranged many serrated-surfaces on the inner periphery of outer shroud in the following manner equably: the ultimate range that these serrated-surfaces leave the outer shroud inner periphery is in the side of serrated-surface facing to rotation direction all the time.In order to guarantee the reliability of one-way clutch mechanism work, the serrated-surface that is arranged on the inner periphery of one-way clutch mechanism outer shroud all has a little gradient.
According to further feature of the present invention, the one-way clutch mechanism of above-mentioned one-way clutch bearing lean against needle roller on the serrated-surface with little gradient, in the process of switching-in spring tensioning, be subjected to the such strength of spring main body, promptly, these needle rollers are pressed on the serrated-surface of outer shroud of one-way clutch mechanism, that is to say, direction towards chucking compresses, so just guaranteed the combined floodgate rotating shaft, and be installed in eccentric block in the combined floodgate rotating shaft, in the course of work of multi-stage gear transmission device, can drive by last direct geared that is contained in the combined floodgate rotating shaft by means of a motor or a manual tensioning shaft.So the switching-in spring that is connected on the eccentric block just is tensioned, for making process is ready next time.It is shorter to drive the tensioning time ratio that this fact of combined floodgate rotating shaft and eccentric block means that not only the tensioning switching-in spring changed without delay, and therefore make gear drive under load, start, that is, no longer include idle running, thereby also reduced the wearing and tearing of gear drive.
Usually, adopt spring leaf on the outer shroud of the one-way clutch mechanism be bearing in the one-way clutch bearing, push down the needle roller on the one-way clutch mechanism of one-way clutch bearing as the spring main body.Certainly, the present invention also comprises different with spring leaf, can push down any other various springs of the needle roller on the one-way clutch mechanism.
Like this, the invention provides a kind of tensioning circuit-breaker that is used for, the device of the switching-in spring of drive unit in the vacuum circuit-breaker particularly, in this device, last gear in the gear drive is connected with the combined floodgate rotating shaft by an one-way clutch bearing.Therefore, the time of tensioning switching-in spring is just shorter, and in addition, the result who does so also makes gear drive start under load, so the wearing and tearing of gear have reduced.
In making process, consider that last gear is installed in the combined floodgate rotating shaft by the one-way clutch bearing, perhaps change a kind of saying, the tooth engagement of the tooth of this gear and the second last of gear drive gear is not so last gear rotates.
A kind of preferred improved form of said apparatus is that a single gear transmission device is connected with above-mentioned last gear, this single gear transmission device is installed in the top of the one-way clutch bearing in the combined floodgate rotating shaft, and the gear of its diameter maximum be installed in the gears engaged that has on the manual tensioning shaft than minor diameter.And, manually on the tensioning shaft another one-way clutch bearing is being installed also, this bearing upper support a sleeve, a flange is arranged on the sleeve, a back-moving spring has been installed on the excircle of flange, one end of back-moving spring is fixed on the stop member that is contained on flanged sleeve, and its other end is fixed on in two stop members one, and these two stop members are installed on the rear wall of circuit-breaker.
When above-mentioned back-moving spring (preferably helical spring) was installed on the stack shell of the sleeve that has flange, the stop member on above-mentioned two rear walls that are fixed on the circuit breaker drive unit staggered 180 ° mutually.If these two stop members are arranged to another angle that staggers mutually,, also can reach same effect for example greater than 30 °.Above-mentioned manual tensioning shaft preferably is installed on the rear wall of circuit-breaker drive unit, also can be installed on the antetheca.
In case work as circuit breaker, after particularly vacuum circuit-breaker closes a floodgate, reversed to the direction of the lower dead center of combined floodgate rotating shaft by switching-in spring for fear of eccentric block, at least when beginning tensioning, switching-in spring to limit eccentric block, thereby on the position of rotating shaft sd so of just closing a floodgate, this position is that the combined floodgate rotating shaft turns over lower dead center position afterwards when eccentric block rotates upward, especially in order to prevent to be connected pallet in the combined floodgate rotating shaft blocking after in preparing the making process next time of vacuum circuit-breaker, having stopped, not only to limit the angle of rebound of eccentric block after breaker closing, also will limit above-mentioned pallet in the combined floodgate rotating shaft angle of rebound after on stopping at the combined floodgate pallet that is connected.
This problem is to solve like this, after stop member on being connected the sleeve that has flange has stopped on another stop member (this stop member be in sleeve rotation direction before, and be mounted on the rear wall of circuit-breaker), these two stop members just and one-way clutch bearing and the sleeve that has flange together, for above-mentioned single gear transmission device, just formed a block that does not reset for above-mentioned combined floodgate rotating shaft.At this moment, when the above-mentioned block that is connected on the sleeve stopped at the place ahead of the above-mentioned rotation direction that is in sleeve and be installed on the stop member on the rear wall of drive unit of circuit breaker, above-mentioned back-moving spring just was in stress.
The angle of rebound that setting is limited by reset baffle block not, not only prevented the heterodromous possibility of member after making process of combined floodgate rotating shaft and top loading, but also guaranteed pallet bump on the combined floodgate pallet, stop after, be connected pallet in the combined floodgate rotating shaft low-angle that can rotate backward.The disappearance of the power of stopping that causes has therefrom not only been eliminated any possibility that above-mentioned combined floodgate pallet blocks, but also has been guaranteed, when switching-in spring during by manual tensioning shaft tensioning switching-in spring, can not produce any fault with motor or with crank handle.
In said structure, it is favourable doing like this, promptly, for circuit breaker making process is prepared next time the time, drive a single gear transmission device by a tensioning motor or manual tensioning shaft, above-mentioned one-way clutch bearing has unclamped the sleeve that has flange, so, because unclamping of back-moving spring, above-mentioned sleeve can rotate in the opposite direction, till the above-mentioned stop member that links to each other with sleeve is blocked on second stop member on the rear wall that is installed in the circuit breaker drive unit.
For the tensioning that makes switching-in spring can realize by enough very little motor torques, and make the rotating speed of last gear, the rotating speed of the rotating shaft of just closing a floodgate is very low, and the speed reducing ratio of above-mentioned single gear transmission device is very big.
In this case, adopt the very big single gear transmission device of speed reducing ratio to suit, this gear drive is made up of following member: energy is installed on the motor main shaft by ball bearing and remains on oval sleeve on the excircle of this main shaft; The elastic ring of a band external tooth, and the tooth on its long axis of ellipse line be mounted to motor main shaft concentric, the inner gearing of being made up of two annulus that overlap each other meshes, one of them annulus is installed on the housing of motor, and fixed a compound gear on second annulus, the gear of diameter minimum and last gears engaged that is installed in the combined floodgate rotating shaft in this compound gear, the gear ratio of the elastic ring of above-mentioned band external tooth has inner gearing, and one the number of teeth in two annulus that overlap each other is few, and the annulus of another band inner gearing then has and with the same number of teeth of the elastic ring of external tooth.
Describe embodiments of the invention with reference to the accompanying drawings in detail.In the accompanying drawing:
When Fig. 1 is illustrated in open position, have the combined floodgate rotating shaft of last gear that superincumbent gear drive is installed;
When Fig. 2 is illustrated in closing position, have the combined floodgate rotating shaft of last gear that the gear drive among superincumbent Fig. 1 is installed;
Fig. 3 represents the schematic diagram of the one-way clutch mechanism of one-way clutch bearing, and above-mentioned last gear is installed in the combined floodgate rotating shaft by it;
Another front elevational schematic that one-way clutch mechanism in Fig. 4 presentation graphs 3 and the block bearing that is arranged in its two ends link together;
Combined floodgate rotating shaft in Fig. 5 presentation graphs 1 is in open position, and the operation of this combined floodgate rotating shaft and single gear transmission device and manual tensioning shaft link together;
Combined floodgate rotating shaft in Fig. 6 presentation graphs 5 is in closing position;
The plane graph of the combined floodgate rotating shaft in Fig. 7 presentation graphs 6.
As shown in Figure 1, at circuit-breaker, particularly in the combined floodgate rotating shaft 5 of the drive unit of vacuum circuit-breaker, except last gear 1 (not representing very in detail among the figure) of multi-stage gear transmission device, an eccentric block 2, cam bit 3 and one also are housed start the pallet 4 of making process by it.Above-mentioned eccentric block 2, cam bit 3 and pallet 4 are fixedly mounted in the combined floodgate rotating shaft 5, and last gear 1 of multi-stage gear transmission device is installed in the combined floodgate rotating shaft 5 by one-way clutch bearing 6 (describing in detail in Fig. 3 and Fig. 4).Be connected on the eccentric block 2, the switching-in spring 7 that is designed to tensioning spring is tensioning when the open position of Fig. 1, that is, drive unit has been ready to start the making process of vacuum circuit-breaker.The startup of making process realizes that by means of another unclamps above-mentioned pallet 4 this another pallet is the part of above-mentioned drive unit, also not expression in detail among the figure.If making process has started owing to unclamping pallet 4, so, be not only pallet 4, also have eccentric block 2, combined floodgate rotating shaft 5, and the cam bit 3 that in work, is connected with a combined floodgate lever of not representing in detail in the drawings, just all drive by switching-in spring 7, rotate 180 ° to the direction of arrow 8.Meanwhile, because the relation of kinetic energy, above-mentioned eccentric block 2 is by the lower dead center 9 of combined floodgate rotating shaft 5, and is last, until combined floodgate rotating shaft 5, eccentric block 2 and pallet 4 are in till the position that switching-in spring shown in Figure 27 loosens.
Want tensioning switching-in spring 7 if prepare for the next making process of startup now, in other words, will be combined floodgate rotating shaft 5, eccentric block 2 with switching-in spring 7, cam bit 3 and cam 4 move to the position of switching-in spring 7 tensionings shown in Fig. 1 from the position shown in Fig. 2, so, will use last gear 1 of multi-stage gear transmission device, in the work of multi-stage gear transmission device at the beginning, by one-way clutch mechanism 6, directly drive above-mentioned combined floodgate rotating shaft 5, just eccentric block 2, be in the position that makes switching-in spring 7 tensionings with Fig. 1 accordingly up to eccentric block 2, that is, ready for starting next making process.Because combined floodgate rotating shaft 5 and eccentric block 2 are directly by the multi-stage gear actuator drives, so the tensioning time of switching-in spring 7 has shortened.And because the multi-stage gear transmission device is to start under the state of load, not idle running is so wearing and tearing have significantly reduced.If adopt the single gear transmission device, also have same advantage.
As shown in Figure 4, above-mentioned last gear 1 that is used for the multi-stage gear transmission device of Fig. 1 and 2 is installed in the one-way clutch bearing 6 in the combined floodgate rotating shaft 5, is fixed on by actual one-way clutch mechanism 10 and two that the block bearing 11 at the two ends of one-way clutch mechanism 10 forms.One-way clutch mechanism 10 and two block bearings 11 all are needle bearings.Fig. 4 and Fig. 3 are combined as can be seen, the interior ring of the one-way clutch mechanism 10 of one-way clutch bearing 6 is that the external peripheral surface by combined floodgate rotating shaft 5 forms, and needle roller 14 then is arranged in the intermediate space 12 between the inner circumferential surface of outer shroud 13 of this circumferential surface and one-way clutch mechanism 10.The diameter of all needle rollers 14 is all less than the distance between the inner periphery supporting member of the outer shroud 13 of the external peripheral surface of combined floodgate rotating shaft 5 and one-way clutch mechanism 10.These needle rollers 14 join with serrated-surface 15 in work, there is the little gradient on the inner surface of an outer shroud 13 that is evenly distributed on one-way clutch mechanism 10 on this surface 15, or rather, to leave the ultimate range of the inner circumferential surface of outer shroud 13 be in serrated-surface 15 and this relative side of rotation direction (direction of arrow 8 among Fig. 1 and 2) to needle roller all the time.At this moment, the needle roller 14 of the one-way clutch mechanism 10 of one-way clutch bearing 6 is subjected to being designed to the pressure of the spring main body 16 of spring leaf, so needle roller 14 just is crushed on the serrated-surface 15 of outer shroud 13 of one-way clutch mechanism 10, that is, presses to the direction of clamping.This is combined floodgate rotating shaft 5 just, thereby also has eccentric block 2, when the multi-stage gear transmission device begins to move, directly drive prerequisite is provided by last gear 1, that is to say, before the tensioning process of switching-in spring, for tensioning switching-in spring 7, the rotation of last gear 1 has just been finished after turning over about 180 °.Device shown in Fig. 5,6 and 7 utilizes single gear transmission device 17 to start.Except last gear 18 of this gear drive, eccentric block 2, cam bit 3 and pallet 4 also are mounted in the combined floodgate rotating shaft 5 of circuit breaker drive unit, and making process is after pallet 4 is unclamped by a combined floodgate pallet 19 and start.At this moment, eccentric block 2, cam bit 3 and pallet 4 all are fixedly mounted in the combined floodgate rotating shaft 5, and last gear 18 of single gear transmission device 17 then is installed in the combined floodgate rotating shaft 5 by one-way clutch bearing 6.
As can be seen from Fig. 5, be connected on the eccentric block 2, the switching-in spring 7 that is designed to extension spring is tensioning when open position, so drive unit is got ready for the startup of a making process of vacuum circuit-breaker; Fig. 6 then represents the situation that switching-in spring is lax, and at this moment, switching-in spring 7, eccentric block 2 and combined floodgate rotating shaft 5 all are in after the lower dead center 9 that turns over combined floodgate rotating shaft 5, at eccentric block 2 on the position that top-direction is rotated.
If the position that is in Fig. 6 from switching-in spring 7 begins, when wanting the above-mentioned switching-in spring 7 of tensioning in order to start another making process, just must make combined floodgate rotating shaft 5, eccentric block 2 and switching-in spring 7 and cam bit 3 and the rotated position of pallet 4 from Fig. 6 to the position shown in Fig. 5.For this reason, will be with a motor 20, feed a control voltage to it after, by last gear 18 of single gear transmission device 17 as the tensioning motor, perhaps use a manual tensioning shaft 21 (Fig. 7), directly drive combined floodgate rotating shaft 5 and eccentric block 2.This driving process is performed until eccentric block 2 and arrives the position shown in Fig. 5, and on this position, above-mentioned switching-in spring 7 is tensioned, that is, ready for beginning next making process.
But, now for after guaranteeing that above-mentioned pallet 4 bumps on combined floodgate pallet 19, the above-mentioned pallet 4 that is connected with combined floodgate rotating shaft 5 can be to low-angle of back rotation, as shown in Figure 7, also be provided with a not reset baffle block 22, by means of this block, just can make the pallet 4 limited angle of rebound that rotates backward.Yet this just means that this strength of blocking can eliminate, thereby and gets rid of the possibility of any locking combined floodgate pallet.In addition, above-mentioned not reset baffle block 22 also has such effect simultaneously,, after making process, has prevented combined floodgate rotating shaft 5 and its other members that is, and promptly any heterodromous possibility of switching-in spring 7 perhaps is to have limited counter motion at least.
As shown in Figure 7, the gear 23 of the diameter maximum of single gear transmission device 17 and be installed in less gear 24 engagements of diameter on the manual tensioning shaft 21.In addition, an one-way clutch bearing 25 is installed on the manual tensioning shaft 21, and is supporting a sleeve 27, has a flange 26 on this sleeve, and a back-moving spring 28 has been installed on the excircle of sleeve.One end 29 of above-mentioned back-moving spring 28 is fixed on the stop member 30 that is installed on the sleeve 27, second end 31 on the stack shell that is enclosed within sleeve 27 32 of back-moving spring 28 then is connected with a stop member 33 in two stop members 33,35, above-mentioned two stop members are installed on the rear wall 34 of drive unit of circuit-breaker, and 180 degree that stagger mutually.In this structure, above-mentioned manual tensioning shaft 21 not only is installed on the rear wall 34 of circuit breaker drive unit, and is installed on the antetheca 36.
Above-mentioned is the not reset baffle block 22 that forms on sleeve 27 basically, and be installed in back-moving spring 28, stop member 30,33,35 on the one-way clutch bearing 25, not only limit the close a floodgate angle of rebound of back eccentric block 2 of vacuum circuit-breaker, and the angle of rebound of the pallet 4 that is connected with combined floodgate rotating shaft 5 of restriction when being blocked by combined floodgate pallet 19.This be because, be connected after stop member 30 on the sleeve 27 is blocked on the stop member 33 nearest along the rotation direction position of sleeve 27, this two stop members 30,33 just and one-way clutch bearing 25 and sleeve 27 together, become one for single gear transmission device 17, thereby are the blocks 22 that do not reset just for combined floodgate rotating shaft 5.If above-mentioned two stop members 30,33 contact with each other, so above-mentioned back-moving spring 28 just is in stress.
On the contrary, be in the stage of the state of preparing at vacuum circuit-breaker for next making process, say exactly, owing to make 17 runnings of single gear transmission device by motor 20 as the tensioning motor, when manual tensioning shaft 21 is turned round, above-mentioned one-way clutch bearing 25 just unclamps the sleeve 27 that has flange 26, so sleeve 27 just rotates because of unclamping in the opposite direction of back-moving spring 28.When the stop member 30 on being connected sleeve 27 was parked on second stop member 35 on the rear wall 34 that is installed in the circuit breaker drive unit, sleeve 27 just stopped operating.
What above-mentioned single gear transmission device 17 used is the gear drive with big retarding ratio that is also referred to as the tuning drie gear transmission device.At this moment, this transmission device overlap each other together two annulus 37,38 in an annulus 37 be installed on the shell 39 of motor 20, on second annulus 38 compound gear 40 is housed then, the gear with minimum diameter 41 on it and last gear 18 engagement that is installed in the combined floodgate rotating shaft 5.Owing to adopted single gear transmission device 17, and it and the circuit breaker coupling of the drive unit operating state of vacuum circuit-breaker particularly, again in conjunction with manually tensioning shaft 21 and not reset baffle block 22, consequently, simultaneously can also reduce the occupied space of gear drive according to device of the present invention, thereby can reduce cost.
Claims (28)
1. the device used of the switching-in spring in the drive unit in the tensioning circuit breaker, particularly vacuum circuit-breaker, it comprises: a combined floodgate rotating shaft (5), an eccentric block (2) that is fixed in the above-mentioned combined floodgate rotating shaft; Be installed in last gear (1,18) on the gear drive in the above-mentioned combined floodgate rotating shaft; One is fixed in the above-mentioned combined floodgate rotating shaft, for controlling the pallet (4) that making process is used; One is fixed in the above-mentioned combined floodgate rotating shaft, the cam bit (3) that the action of its action and a combined floodgate lever links together, and be designed to extension spring, be connected the switching-in spring (7) on the above-mentioned eccentric block; It is characterized in that, last gear of said gear transmission device (1,18) is installed in the above-mentioned combined floodgate rotating shaft (5) by means of an one-way clutch bearing (6), this one-way clutch bearing (6) is in making process, be that switching-in spring (7) is converted to relaxed state from tensioning state, when eccentric block rotates downwards from the top, be in not drive state, and in preparing making process, be that switching-in spring (7) is converted to tensioning state from relaxed state, when eccentric block rotates upward from the below, be in drive state.
2. device as claimed in claim 1, it is characterized in that, above-mentioned one-way clutch bearing (6) is made up of one-way clutch mechanism (10) and each block bearing (11) of two ends, and these two block bearings are arranged in the both sides of above-mentioned one-way clutch mechanism (10).
3. device as claimed in claim 1 or 2 is characterized in that, the block bearing (11) of above-mentioned one-way clutch mechanism (10) and one-way clutch bearing (6) all is a needle bearing.
4. device as claimed in claim 1 or 2, it is characterized in that, the interior ring of the one-way clutch mechanism (10) of above-mentioned one-way clutch bearing (6) is to form on the external peripheral surface of combined floodgate rotating shaft (5), and the diameter of the needle roller (14) of above-mentioned one-way clutch mechanism (10) is less than the distance between the inner periphery of the outer shroud (13) of the external peripheral surface of combined floodgate rotating shaft (5) and one-way clutch mechanism (10), and arranged many serrated-surfaces (15) on the inner periphery of outer shroud (13) in the following manner equably: the ultimate range that these serrated-surfaces leave the inner periphery of outer shroud (13) is in the side of serrated-surface (15) facing to rotation direction all the time.
5. device as claimed in claim 3, it is characterized in that, the interior ring of the one-way clutch mechanism (10) of above-mentioned one-way clutch bearing (6) is to form on the external peripheral surface of combined floodgate rotating shaft (5), and the diameter of the needle roller (14) of above-mentioned one-way clutch mechanism (10) is less than the distance between the inner periphery of the outer shroud (13) of the external peripheral surface of combined floodgate rotating shaft (5) and one-way clutch mechanism (10), and arranged many serrated-surfaces (15) on the inner periphery of outer shroud (13) in the following manner equably: the ultimate range that these serrated-surfaces leave the inner periphery of outer shroud (13) is in the side of serrated-surface (15) facing to rotation direction all the time.
6. device as claimed in claim 4 is characterized in that, the serrated-surface (15) on the inner periphery of the above-mentioned outer shroud (13) that is arranged on one-way clutch mechanism (10) all has a little gradient.
7. device as claimed in claim 5 is characterized in that, the serrated-surface (15) on the inner periphery of the above-mentioned outer shroud (13) that is arranged on one-way clutch mechanism (10) all has a little gradient.
8. as claim 5 or 7 described devices, it is characterized in that, the needle roller (14) of the one-way clutch mechanism (10) of above-mentioned one-way clutch bearing (6), be subjected to the such strength of spring main body (16), promptly, these needle rollers are pressed on the serrated-surface (15) of outer shroud (13) of one-way clutch mechanism (10), that is to say, compress towards the direction of chucking.
9. device as claimed in claim 8 is characterized in that, above-mentioned spring main body (16) is a spring leaf, and these spring leafs are bearing on the outer shroud (13) of one-way clutch mechanism (10) of one-way clutch bearing (6).
10. device as claimed in claim 1 or 2, it is characterized in that, a single gear transmission device (17) is connected with above-mentioned last gear (18), this single gear transmission device is installed in the top of the one-way clutch bearing (6) in the combined floodgate rotating shaft (5), and the gear (23) of its diameter maximum be installed in gear (24) engagement that has on the manual tensioning shaft (21) than minor diameter, and, manually on the tensioning shaft (21) another one-way clutch bearing (25) is being installed also, this bearing upper support a sleeve (27), a flange (26) is arranged on this sleeve, a back-moving spring (28) has been installed on the excircle of this flange, one end (29) of back-moving spring is fixed on the stop member (30) on the sleeve (27) that is contained in flanged pin (26), its other end is fixed on two stop members (33,35) on another stop member (33) in, these two stop members all are installed on the rear wall (34) of circuit-breaker.
11. as claim 5 or 7 or 9 described devices, it is characterized in that, a single gear transmission device (17) is connected with above-mentioned last gear (18), this single gear transmission device is installed in the top of the one-way clutch bearing (6) in the combined floodgate rotating shaft (5), and the gear (23) of its diameter maximum be installed in gear (24) engagement that has on the manual tensioning shaft (21) than minor diameter, and, manually on the tensioning shaft (21) another one-way clutch bearing (25) is being installed also, this bearing upper support a sleeve (27), a flange (26) is arranged on this sleeve, a back-moving spring (28) has been installed on the excircle of this flange, one end (29) of back-moving spring is fixed on the stop member (30) on the sleeve (27) that is contained in flanged pin (26), its other end is fixed on two stop members (33,35) on another stop member (33) in, these two stop members all are installed on the rear wall (34) of circuit-breaker.
12. device as claimed in claim 10 is characterized in that, above-mentioned back-moving spring (28) is installed on the stack shell (32) of the sleeve (27) that has flange (26).
13. device as claimed in claim 11 is characterized in that, above-mentioned back-moving spring (28) is installed on the stack shell (32) of the sleeve (27) that has flange (26).
14. device as claimed in claim 11 is characterized in that, above-mentioned back-moving spring (28) is a helical spring.
15. device as claimed in claim 13 is characterized in that, above-mentioned back-moving spring (28) is a helical spring.
16. device as claimed in claim 11 is characterized in that, the predetermined angle that is arranged to stagger mutually of two stop members (33,35) on the above-mentioned rear wall (34) that is installed in the circuit breaker drive unit, preferably 180 °.
17., it is characterized in that the predetermined angle that is arranged to stagger mutually of two stop members (33,35) on the above-mentioned rear wall (34) that is installed in the circuit breaker drive unit, preferably 180 ° as claim 13 or 15 described devices.
18. device as claimed in claim 10 is characterized in that, an end of above-mentioned manual tensioning shaft (21) is installed in the rear wall (34) of circuit breaker drive unit, and its other end is installed in the antetheca (36) of circuit breaker drive unit.
19. device as claimed in claim 11 is characterized in that, an end of above-mentioned manual tensioning shaft (21) is installed in the rear wall (34) of circuit breaker drive unit, and its other end is installed in the antetheca (36) of circuit breaker drive unit.
20. device as claimed in claim 17 is characterized in that, an end of above-mentioned manual tensioning shaft (21) is installed in the rear wall (34) of circuit breaker drive unit, and its other end is installed in the antetheca (36) of circuit breaker drive unit.
21. device as claimed in claim 11, it is characterized in that, not only the angle of rebound of eccentric block (2) after breaker closing has been limited, and the above-mentioned pallet (4) that is connected in the combined floodgate rotating shaft (5) also has been limited stopping at the angle of rebound of combined floodgate pallet (19) after going up; Its feature also is, stop member (30) on being connected the sleeve (27) that has flange (26) stopped at another stop member (33) go up after (this stop member be in sleeve (15) rotation direction before, and be mounted on the rear wall (34) of circuit-breaker), these two stop members (30,33) just and one-way clutch bearing (25) and sleeve (27) together, for above-mentioned single gear transmission device (17), just formed a block that does not reset (22) for above-mentioned combined floodgate rotating shaft (5).
22. as claim 18,19,20 described devices, it is characterized in that, not only the angle of rebound of eccentric block (2) after breaker closing has been limited, and the above-mentioned pallet (4) that is connected in the combined floodgate rotating shaft (5) also has been limited stopping at the angle of rebound of combined floodgate pallet (19) after going up; Its feature also is, stop member (30) on being connected the sleeve (27) that has flange (26) stopped at another stop member (33) go up after (this stop member be in sleeve (15) rotation direction before, and be mounted on the rear wall (34) of circuit-breaker), these two stop members (30,33) just and one-way clutch bearing (25) and sleeve (27) together, for above-mentioned single gear transmission device (17), just formed a block that does not reset (22) for above-mentioned combined floodgate rotating shaft (5).
23. device as claimed in claim 10, it is characterized in that, when the above-mentioned block (30) that is connected on the sleeve (27) stops at the place ahead of the above-mentioned rotation direction that is in sleeve (27) and is installed in stop member (33) on the rear wall (34) of the drive unit of circuit breaker when going up, above-mentioned back-moving spring (28) just is in stress.
24. as the described device of any one claim in the claim 13,15,19,20,21, it is characterized in that, when the above-mentioned block (30) that is connected on the sleeve (27) stops at the place ahead of the above-mentioned rotation direction that is in sleeve (27) and is installed in stop member (33) on the rear wall (34) of the drive unit of circuit breaker when going up, above-mentioned back-moving spring (28) just is in stress.
25. device as claimed in claim 10, it is characterized in that, for circuit breaker making process is prepared next time the time, drive a single gear transmission device (17) by a tensioning motor (20) or manual tensioning shaft (21), above-mentioned one-way clutch bearing (25) has unclamped the sleeve (27) that has flange (26), so, because unclamping of back-moving spring (28), above-mentioned sleeve (27) can rotate in the opposite direction, is blocked in till second stop member (35) on the rear wall (34) that is installed in the circuit breaker drive unit go up up to the above-mentioned stop member (30) that links to each other with sleeve (27).
26. device as claimed in claim 23, it is characterized in that, for circuit breaker making process is prepared next time the time, drive a single gear transmission device (17) by a tensioning motor (20) or manual tensioning shaft (21), above-mentioned one-way clutch bearing (25) has unclamped the sleeve (27) that has flange (26), so, because unclamping of back-moving spring (28), above-mentioned sleeve (27) can rotate in the opposite direction, is blocked in till second stop member (35) on the rear wall (34) that is installed in the circuit breaker drive unit go up up to the above-mentioned stop member (30) that links to each other with sleeve (27).
27., it is characterized in that above-mentioned single gear transmission device (17) has very big speed reducing ratio as claim 25 or 26 described devices.
28. device as claimed in claim 27, it is characterized in that, above-mentioned have very the gear drive (17) of big retarding ratio and be made up of following member: one is installed on the main shaft of motor (20) by a ball bearing, and can remain on the oval sleeve on the excircle of this main shaft; The elastic ring of a band external tooth, and the tooth on its long axis of ellipse line be mounted to motor (20) main shaft concentric, by two annulus that overlap each other (37,38) the inner gearing engagement of forming, one of them annulus (37) is installed on the housing (39) of motor (20), and fixed a compound gear (40) on second annulus (38), gear of diameter minimum (41) and last gear (18) engagement that is installed in the combined floodgate rotating shaft (5) in this compound gear, the gear ratio of the elastic ring of above-mentioned band external tooth has inner gearing, and two annulus (37 that overlap each other, 38) one the number of teeth in is few, and the annulus of another band inner gearing then has and with the same number of teeth of the elastic ring of external tooth.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4413191.7 | 1994-04-12 | ||
| DE19944413191 DE4413191C1 (en) | 1994-04-12 | 1994-04-12 | Electric load switch spring drive tensioning device |
| DE19503679.4 | 1995-01-30 | ||
| DE1995103679 DE19503679C1 (en) | 1995-01-30 | 1995-01-30 | Circuit breaker actuator cut-in spring tensioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1146256A CN1146256A (en) | 1997-03-26 |
| CN1047461C true CN1047461C (en) | 1999-12-15 |
Family
ID=25935674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95192542A Expired - Fee Related CN1047461C (en) | 1994-04-12 | 1995-04-04 | Device for tensioning the cut-in spring in actuator units for circuit breakers, in particular vacuum circuit breakers |
Country Status (21)
| Country | Link |
|---|---|
| EP (1) | EP0755564B1 (en) |
| JP (1) | JPH09511611A (en) |
| CN (1) | CN1047461C (en) |
| AT (1) | ATE167955T1 (en) |
| AU (1) | AU690668B2 (en) |
| BG (1) | BG62542B1 (en) |
| BR (1) | BR9507461A (en) |
| CZ (1) | CZ288683B6 (en) |
| DE (2) | DE19580313D2 (en) |
| DK (1) | DK0755564T3 (en) |
| ES (1) | ES2120741T3 (en) |
| FI (1) | FI964093A (en) |
| HU (1) | HU220213B (en) |
| MX (1) | MX9604525A (en) |
| MY (1) | MY114088A (en) |
| NO (1) | NO964343L (en) |
| NZ (1) | NZ283744A (en) |
| PL (1) | PL176808B1 (en) |
| SK (1) | SK280118B6 (en) |
| TW (1) | TW272295B (en) |
| WO (1) | WO1995027992A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101283425B (en) * | 2005-08-10 | 2011-03-09 | 西门子公司 | Pressing device |
| DE102006043632A1 (en) * | 2006-09-18 | 2008-03-27 | Schaltbau Gmbh | vacuum switch |
| FR2923075B1 (en) * | 2007-10-29 | 2009-12-25 | Areva T & D Ag | ACTUATOR OF A SWITCH COMPRISING A FREEWHEEL COUPLING DEVICE |
| CN101834090A (en) * | 2010-05-27 | 2010-09-15 | 西安交通大学 | Cam matched with load property of 126kV vacuum circuit breaker |
| DE102017216804B4 (en) * | 2017-09-22 | 2020-11-05 | Siemens Aktiengesellschaft | Tensioning gear for tensioning a storage spring of a spring storage drive |
| JP7059812B2 (en) * | 2018-05-30 | 2022-04-26 | トヨタ自動車株式会社 | Wire drive transfer device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2518599B1 (en) * | 1975-04-24 | 1976-09-09 | Siemens Ag | Motor storage drive with ratchet wheel for circuit breaker |
| US4039058A (en) * | 1975-10-06 | 1977-08-02 | The Falk Corporation | One-way clutch and backstop incorporating the same |
| US4762971A (en) * | 1984-04-23 | 1988-08-09 | Mitsubishi Denki Kabushiki Kaisha | Spring-type operating mechanism for a circuit interrupter |
-
1995
- 1995-04-04 AU AU22155/95A patent/AU690668B2/en not_active Ceased
- 1995-04-04 DK DK95915184T patent/DK0755564T3/en active
- 1995-04-04 ES ES95915184T patent/ES2120741T3/en not_active Expired - Lifetime
- 1995-04-04 DE DE19580313T patent/DE19580313D2/en not_active Expired - Fee Related
- 1995-04-04 CZ CZ19962760A patent/CZ288683B6/en not_active IP Right Cessation
- 1995-04-04 CN CN95192542A patent/CN1047461C/en not_active Expired - Fee Related
- 1995-04-04 BR BR9507461A patent/BR9507461A/en not_active Application Discontinuation
- 1995-04-04 WO PCT/EP1995/001232 patent/WO1995027992A1/en active IP Right Grant
- 1995-04-04 AT AT95915184T patent/ATE167955T1/en not_active IP Right Cessation
- 1995-04-04 NZ NZ283744A patent/NZ283744A/en unknown
- 1995-04-04 JP JP7526055A patent/JPH09511611A/en active Pending
- 1995-04-04 HU HU9602642A patent/HU220213B/en not_active IP Right Cessation
- 1995-04-04 EP EP95915184A patent/EP0755564B1/en not_active Expired - Lifetime
- 1995-04-04 MX MX9604525A patent/MX9604525A/en not_active Application Discontinuation
- 1995-04-04 SK SK1228-96A patent/SK280118B6/en unknown
- 1995-04-04 DE DE59502684T patent/DE59502684D1/en not_active Expired - Fee Related
- 1995-04-10 MY MYPI95000917A patent/MY114088A/en unknown
- 1995-04-11 TW TW084103488A patent/TW272295B/zh not_active IP Right Cessation
-
1996
- 1996-10-08 BG BG100891A patent/BG62542B1/en unknown
- 1996-10-11 PL PL95316755A patent/PL176808B1/en not_active IP Right Cessation
- 1996-10-11 FI FI964093A patent/FI964093A/en unknown
- 1996-10-11 NO NO964343A patent/NO964343L/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2518599B1 (en) * | 1975-04-24 | 1976-09-09 | Siemens Ag | Motor storage drive with ratchet wheel for circuit breaker |
| US4039058A (en) * | 1975-10-06 | 1977-08-02 | The Falk Corporation | One-way clutch and backstop incorporating the same |
| US4762971A (en) * | 1984-04-23 | 1988-08-09 | Mitsubishi Denki Kabushiki Kaisha | Spring-type operating mechanism for a circuit interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| MX9604525A (en) | 1997-12-31 |
| HUT75473A (en) | 1997-05-28 |
| NO964343L (en) | 1996-11-28 |
| NZ283744A (en) | 1998-02-26 |
| CZ288683B6 (en) | 2001-08-15 |
| FI964093A0 (en) | 1996-10-11 |
| NO964343D0 (en) | 1996-10-11 |
| WO1995027992A1 (en) | 1995-10-19 |
| HU9602642D0 (en) | 1996-11-28 |
| DE59502684D1 (en) | 1998-08-06 |
| ES2120741T3 (en) | 1998-11-01 |
| ATE167955T1 (en) | 1998-07-15 |
| EP0755564A1 (en) | 1997-01-29 |
| BR9507461A (en) | 1997-09-02 |
| TW272295B (en) | 1996-03-11 |
| AU2215595A (en) | 1995-10-30 |
| CZ276096A3 (en) | 1998-08-12 |
| EP0755564B1 (en) | 1998-07-01 |
| FI964093A (en) | 1996-12-05 |
| PL316755A1 (en) | 1997-02-03 |
| BG62542B1 (en) | 2000-01-31 |
| CN1146256A (en) | 1997-03-26 |
| DK0755564T3 (en) | 1999-04-12 |
| AU690668B2 (en) | 1998-04-30 |
| PL176808B1 (en) | 1999-07-30 |
| JPH09511611A (en) | 1997-11-18 |
| MY114088A (en) | 2002-08-30 |
| DE19580313D2 (en) | 1997-10-16 |
| BG100891A (en) | 1997-10-31 |
| HU220213B (en) | 2001-11-28 |
| SK122896A3 (en) | 1997-06-04 |
| SK280118B6 (en) | 1999-08-06 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 19991215 Termination date: 20100404 |