CN1050687C - Security protection mechanism for disjoint of three working position load switch - Google Patents
Security protection mechanism for disjoint of three working position load switch Download PDFInfo
- Publication number
- CN1050687C CN1050687C CN95115514A CN95115514A CN1050687C CN 1050687 C CN1050687 C CN 1050687C CN 95115514 A CN95115514 A CN 95115514A CN 95115514 A CN95115514 A CN 95115514A CN 1050687 C CN1050687 C CN 1050687C
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- rotating shaft
- dropout
- energy storage
- fusion tube
- switch
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Abstract
The present invention discloses a tripping protection mechanism for a three-position load switch, which is characterized a tripping energy storing amplifying mechanism and a fusion tube tripping opening mechanism are arranged on a basic frame provided with an isolating switch, a vacuum load switch and a fusion tube grounding switch, wherein the fusion tube tripping opening mechanism comprises a mechanical tripping device or an electric tripping device or the combination of the mechanical tripping device and the electric tripping device. The fusion tubes in any group of the three groups are fused to enable the low energy of a firing pin to be magnified, a branch brake of a vacuum arc-extinguish room is controlled by the parallel connection protection of the mechanical tripping device and the electric tripping device to enable the tripping function of the switch to be reliable and stable and the failure rate of overload protection to be below millionth. The apparatus burned phenomenon generated by open-phase operation and overload accidents is effectively prevented.
Description
The present invention relates to the protection mechanism of vacuum load switch, particularly with the dropout protection mechanism of isolating switch, on-load switch, fusion tube earthed switch three-stations load switch.
Three-stations load switch claims combined electrical apparatus again, the vacuum load switch ＂ that isolates of the ＂ manual operation extension spring energy storage band of application number 95212106.9 for example, be to utilize the energy of fusion tube striker directly to control the position relation of roller and cam (or ratchet and ratchet), thereby reach the functional purpose of combined floodgate and dropout separating brake through the transmission of power of four-bar mechanism.Yet, because the dispersion of the frictional force of existence and Poewr transmission mechanism causes rotating all factors such as flexibility is not good enough between fusion tube striker finite energy, roller and the cam (or ratchet and ratchet), all will influence the completeness and the reliability of tripping function, although through reasonably debugging, still exist destabilizing factor, make tripping function reliable inadequately.Particularly combined electrical apparatus as disjunction rapidly, causes equipment in phase shortage or the operation of low overload after unidirectional fusing of fuse or low overload fault, as being in operation under the three-phase imbalance state for a long time, will producing fusion tube blast electric accident and make equipment burnout.
The objective of the invention is to overcome the defective of prior art and provide a kind of and possess the energy machine amplification structure and can realize that machinery is threaded off and the dropout protection mechanism of the three-stations load switch of electric dropout, with the reliability and stability of raising entire mechanism.
Purpose of the present invention realizes by following scheme: design fusion tube striker energy storage enlarger when its design is to utilize on-load switch combined floodgate energy storage, improve the reliability and stability of the dropout separating brake of entire mechanism by machinery dropout and electric dropout.Its scheme is to be provided with isolating switch, the pedestal two-side supporting of vacuum load switch and fusion tube earthed switch main shaft, rotation is built on stilts to be enclosed within on the main shaft, its special character is also to be provided with dropout energy storage enlarger and fusion tube dropout brake separating mechanism on pedestal, described dropout energy storage enlarger comprises and fixing energy storage bearing and the energy storage support of pedestal, rotating shaft I expansion bearing is in the energy storage support, sky is enclosed within swivel mount and the pressing plate one on the main shaft, be contained in and fixing screw rod in the energy storage bearing on the guide post in the copper sheathing, the lower end is hinged by pin and connecting lever I, the other end of connecting lever I and rotating shaft I fix, and rotating shaft I is in transmission connection by square tenon and fork formation; Fixing housing on the energy storage support, in be provided with slide block and spring, screw rod connects slide block, fluted on the slide block, guide rod falls into groove and energy storage.
Described fusion tube dropout brake separating mechanism can be the combination of mechanical trip gear or electric trip gear or mechanical trip gear and electric trip gear.
The present invention utilizes the little energy of fusion tube striker to be amplified; and designed mechanical dropout and electric dropout and directly controlled thoroughly threading off rapidly of roller and cam; make the tripping function of switch more reliably more stable; particularly the separating brake of vacuum interrupter is controlled in the combination of machinery dropout and electric dropout protection in parallel; facts have proved the fault rate that can make overload protection be lower than 1,000,000/, prevented the equipment phase-deficient operation effectively and the damage equipment phenomenon that the overload accident is produced taken place.
Description of drawings.
Fig. 1 is the general structure schematic diagram of on-load switch of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the E place enlarged drawing of Fig. 2.
Fig. 5 is that the C of Fig. 1 is to view.
Fig. 6 is the D-D cutaway view of Fig. 1.
By above-mentioned accompanying drawing embodiment the present invention is remake and to describe in further detail.
The dropout protection mechanism of three-stations load switch (seeing Fig. 1-6 for details); main shaft 13 at pedestal 12 (Fig. 1) two-side supporting that is provided with isolating switch 1, vacuum load switch 2 and fusion tube earthed switch 14; swivel mount 3 skies are enclosed within on the main shaft; also be provided with dropout energy storage enlarger and fusion tube dropout brake separating mechanism on the pedestal, fusion tube dropout brake separating mechanism divides the combination of mechanical trip gear or electric trip gear or mechanical trip gear and electric trip gear again.
Dropout energy storage enlarger (Fig. 1, Fig. 3, Fig. 4) comprises and is fixed with energy storage bearing 5 and energy storage support 9 on the pedestal 12, rotating shaft I7 expansion bearing is in the energy storage support, sky is enclosed within the swivel mount 3 and pressing plate 33 one on the main shaft, the guide post 30 that is contained in the interior copper sheathing 29 of energy storage bearing can move up and down along copper sheathing, a screw rod 31 is fixed in the guide post upper end, the lower end is hinged with connecting lever I27 by pin 28, the other end of connecting lever I and rotating shaft I7 welding one, and rotating shaft I is in transmission connection by square tenon and fork 8 formation.Fixing housing 41 on the energy storage support 9, in be provided with slide block 43 and spring 42, screw rod 45 connects slide block, on the slide block fluted 44, when the transmission of power of mechanism made fork 8 bump screw rods 45, slide block made spring 42 compressions and moves to right, and guide rod 38 is energy storage with regard to falling into groove 44, this energy storage carries out when mechanism's combined floodgate energy storage synchronously, for machinery is threaded off and electric dropout is prepared.
Machinery trip gear (Fig. 2, Fig. 4, Fig. 3) comprise three groups respectively with the fixing contact plate 18 of insulator 16, lever 20 is hinged by pin 19 and contact plate, one end bearing fusion tube 10 of lever also is subjected to the effect of fusion tube striker, the other end and connecting rod I17 are hinged, connecting rod I is hinged with crank I15 again, and crank I and three groups of public rotating shaft II11 side feather joints, rotating shaft II and rotating shaft I are bearing on the pedestal respectively, rotating shaft II is through crank II34, pin 35 is hinged with connecting rod II36, the end of connecting rod II does to regulate supporting and hinged with guide rod 38 with the screw rod 40 that is screwed onto on the housing, guide rod also can slide up and down in the housing axis hole with being spirally connected of housing is fixing by nut 37, spring 39 acts on the guide rod, the energy that climbs away 44 generations of slide block groove of guide rod discharges, making spring promote slide block moves to left, drive the fork 8 of screw rod 45 bumps and the feather joint of rotating shaft I side, make rotating shaft I7 rotate generation dropout energy and prepare for threading off.And connecting lever II26 and rotating shaft I7 welding one, the connecting lever III24 sky that has pin 25 is enclosed within on the minor axis 32, and minor axis is fixed on the swivel mount 3, roller 22 is contained on the connecting lever III24 by pin 21, rotation drive roller 22 disengagings of connecting lever III are fixed on the cam 23 on the main shaft and thread off, make main shaft 13 under the effect of tripping spring power, finish the separating brake action, realize the separating brake of vacuum interrupter.
Electric trip gear (Fig. 4, Fig. 5, Fig. 6) comprise rotating shaft II11 with the feather joint of crank I15 side, rotating shaft II again with the feather joint of crank III46 side, the action bump sensitive switch 48 of crank III, sensitive switch is fixed on the pedestal 12 by bent plate 47, sensitive switch is connected with electromagnet 49 leads on being fixed on the energy storage support, be equipped with on the electromagnet and act on the push rod 50 of cranking arm on 6, crank arm and the feather joint of rotating shaft I side, the swing of cranking arm makes rotating shaft I produce the dropout energy and prepares, the action of the rotation drive connecting lever II of rotating shaft I impels the rotation of connecting lever III to make roller break away from cam and threads off, and makes main shaft finish the separating brake that the separating brake action realizes vacuum interrupter under the effect of tripping spring power.
Any phase fusion tube fusing can both realize machinery dropout and electric dropout.
Dynamic structure of the present invention is as follows:
Dropout energy storage enlarger: in the on-load switch energy storage since rotation → swivel mount 3, the pressing plate 33 rotations → pressing plates of operation board 4 press to screw rod 31 → guide post 30 downward → 8 swing → pendulum impact screw rods 45 → drive slide block 43 moves to right connecting lever I27 rotation → rotating shaft I7 rotation → drive fork, spring 42 compression → guide rods 38 fall into slide block groove 14 and promptly finish dropout energy storage amplification process.
Machinery is threaded off and electric dropout protection process in parallel: when overload takes place in switch, and any one group of fusion tube 10 striker bump lever 20, connecting rod I17 action drives crank I15 and rotates, and rotating shaft II11 rotates, this time-division two-way: No. one machinery is threaded off one tunnel electric dropout.
Machinery is threaded off: after rotating shaft II11 rotates, drive crank II34 action, connecting rod II36 rotates, and drives guide rod 38 risings and threads off, and slide block 43 energy discharge and move to left rapidly, drive screw rod 45 bump forks 8, drive rotating shaft I7 and rotate, connecting lever II26 swing is stirred pin 25 connecting lever III24 is rotated, connecting lever III drives roller 22 and breaks away from cam 23, makes main shaft 13 finish the separating brake function under the effect of tripping spring power.
Electric dropout: after rotating shaft II11 rotates, drive crank III 46 actions, sensitive switch 48 actions, electromagnet 49 conductings promote to crank arm 6, then drive rotating shaft I7 and rotate, connecting lever II26 swing, stir pin 25 connecting lever III24 is rotated, connecting lever III drives roller 22 and breaks away from cam 23, makes main shaft 13 finish the separating brake function under the effect of tripping spring power.
When only needing machinery, mechanism threads off or electric dropout when separately protected, as long as remove a certain part in addition in the electric dropout interlocking action or a certain part in addition in the mechanical dropout interlocking action can be realized.
Claims (4)
1. the dropout protection mechanism of a three-stations load switch, be provided with isolating switch (1), pedestal (12) two-side supporting of vacuum load switch (2) and fusion tube earthed switch (14) main shaft (13), swivel mount (3) sky is enclosed within on the main shaft, it is characterized in that on pedestal, also being provided with dropout energy storage enlarger and fusion tube dropout brake separating mechanism, described dropout energy storage enlarger comprises and fixing energy storage bearing (5) and the energy storage support (9) of pedestal (12), rotating shaft I (7) expansion bearing is in the energy storage support, sky is enclosed within the swivel mount (3) and pressing plate (33) one on the main shaft, screw rod (31) is being fixed in guide post (30) upper end that is contained in the interior copper sheathing of energy storage bearing (5) (29), the lower end is hinged with connecting lever I (27) by pin (28), the other end of connecting lever I and rotating shaft I (7) are fixing, and rotating shaft I is in transmission connection by square tenon and fork (8) formation; Fixing housing (41) on the energy storage support (9), in be provided with slide block (43) and spring (42), screw rod (45) connects slide block, fluted on the slide block (44), guide rod (38) falls into groove (44) and energy storage.
2. the dropout protection mechanism of three-stations load switch as claimed in claim 1; it is characterized in that described fusion tube dropout brake separating mechanism is mechanical trip gear; comprise three groups respectively with the fixing contact plate (18) of insulator (16); lever (20) is hinged by pin (19) and contact plate; one end bearing fusion tube (10) of lever also is subjected to the effect of fusion tube striker; the other end and connecting rod I (17) are hinged; connecting rod I is hinged with crank I (15) again; and crank I and three groups of public square feather joints of rotating shaft II (11); rotating shaft II (11) and rotating shaft I (7) are bearing in respectively on the pedestal (12); rotating shaft II is through crank II (34); pin (35) is hinged with connecting rod II (36); connecting rod II end does to regulate supporting and hinged with guide rod (38) with the screw rod (40) that is screwed onto on the housing (41); guide rod is fixed and can be slided up and down in the housing axis hole by nut (37) and being spirally connected of housing; spring (39) acts on the guide rod; the guide rod that falls into slide block groove (44) leaves groove when rising discharges energy; fork (8) and the square feather joint of rotating shaft I (7); connecting lever II (26) and rotating shaft I (7) are fixed as one; connecting lever III (24) sky that has pin (25) is enclosed within on the minor axis (32); and minor axis is fixed on the swivel mount, and the rotation of connecting lever III drives roller (22) disengaging cam (23) and threads off.
3. the dropout protection mechanism of three-stations load switch as claimed in claim 1; it is characterized in that described fusion tube dropout brake separating mechanism is electric trip gear; comprise rotating shaft II (11) with the square feather joint of crank I (15); rotating shaft II again with the square feather joint of crank III (46); the action bump sensitive switch (48) of crank III; sensitive switch is fixed on the pedestal (12) by bent plate (47); sensitive switch is connected with electromagnet (49) lead on being fixed on energy storage support (9); the push rod (50) that acts on crank arm (6) is housed on the electromagnet; crank arm and the square feather joint of rotating shaft I (7); rotating shaft I and connecting lever II fix, and rotating shaft I drive connecting lever II impels connecting lever III (24) rotation to make roller (22) break away from cam (23) and threads off.
4. the dropout protection mechanism of three-stations load switch as claimed in claim 1 is characterized in that described fusion tube dropout brake separating mechanism is the combination of mechanical trip gear and electric trip gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95115514A CN1050687C (en) | 1995-08-22 | 1995-08-22 | Security protection mechanism for disjoint of three working position load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95115514A CN1050687C (en) | 1995-08-22 | 1995-08-22 | Security protection mechanism for disjoint of three working position load switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1128894A CN1128894A (en) | 1996-08-14 |
| CN1050687C true CN1050687C (en) | 2000-03-22 |
Family
ID=5080543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95115514A Expired - Fee Related CN1050687C (en) | 1995-08-22 | 1995-08-22 | Security protection mechanism for disjoint of three working position load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050687C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466130C (en) * | 2007-03-08 | 2009-03-04 | 冯保明 | Linked middle voltage switch with load, insulation, grounding electric function |
| CN102496498B (en) * | 2011-12-16 | 2014-05-14 | 常州瑞联电力科技有限公司 | Three-position switch transmission device |
| ES2902663T3 (en) * | 2017-06-07 | 2022-03-29 | Abb Schweiz Ag | Fusible device with microswitch |
| CN108766856B (en) * | 2018-09-14 | 2023-12-29 | 杨策 | Electric drop-out fuse with drop-out tripping mechanism |
| CN110061566B (en) * | 2019-05-20 | 2024-04-26 | 广东佛电电器有限公司 | Intelligent circuit breaker controller for distribution transformer of low-voltage transformer area of Internet of things |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075384U (en) * | 1990-05-20 | 1991-04-17 | 李雁 | Fuse with microswitch |
-
1995
- 1995-08-22 CN CN95115514A patent/CN1050687C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075384U (en) * | 1990-05-20 | 1991-04-17 | 李雁 | Fuse with microswitch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1128894A (en) | 1996-08-14 |
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| C10 | Entry into substantive examination | ||
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |