CN2906886Y

CN2906886Y - Dual-side cutting isolating switch

Info

Publication number: CN2906886Y
Application number: CN 200620114358
Authority: CN
Inventors: 王光顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-26
Filing date: 2006-04-26
Publication date: 2007-05-30
Anticipated expiration: 2016-04-26

Abstract

The utility model relates to an isolating switch, in particular to a double-sided cut isolating switch used in plateau and cold regions. By separating the insulating rotary column and the static contactor insulating support, the utility model improves the stability and reliability of equipments; by using an energy storage spring and a bistable commutator to drive a link lever, the isolating switch has an improved anti-icing capability and higher solid switching-off speed.

Description

A kind of bilateral disconnects isolating switch

Technical field

The utility model relates to a kind of isolating switch, and especially a kind of bilateral disconnects isolating switch.

Background technology

Bilateral breakaway-element isolating switch is the common equipment that is applied in the high voltage substation, its operation principle is to utilize a connecting rod that can horizontally rotate 90 degree that is arranged on each phase line to connect the termination, connecting rod is the straight-bar of fixing, the rotation connecting rod makes its contact insert fixed contact during combined floodgate, during separating brake connecting rod is revolved to turn 90 degrees to get final product.The S3CD type bilateral of producing as Alstom (ALSTOM) disconnects isolating switch.But because the moving contact insulation column below the connecting rod had both played the effect of support link weight, also be responsible for the drive link rotation simultaneously, the moving contact insulation column will bear bigger torsion and be easy to generate and rock when branch, feed motion, the stability that influence is used is manufactured precision height, manufacturing cost costliness.

Summary of the invention

The purpose of this utility model provides a kind of bilateral simple in structure, good stability and disconnects isolating switch.

For achieving the above object, the utility model adopts following technical scheme:

A kind of bilateral described in the utility model disconnects isolating switch, comprises

Every have two fixing static contact and insulation pillars and a moving contact insulation column that is arranged between the two static contact and insulation pillars mutually, the top of static contact and insulation pillar is equipped with fixed contact, the top of moving contact insulation column is equipped with connecting rod, and the two ends of connecting rod have moving contact;

The top of moving contact insulation column is fixedly connected with gear box, be provided with vertical power input shaft and power output shaft in the gear box, fixedly connected with the insulation column spinner in the lower end of power input shaft, the insulation column spinner is set in parallel in a side of moving contact insulation column, the lower end of moving contact insulation column is fixedly mounted on the base, and the lower end and the drive unit of insulation column spinner are in transmission connection; The upper end of power output shaft is stretched out gear box and is fixedly connected on the centre of connecting rod.

The lower end of above-mentioned insulation column spinner is connected with driving mechanism by worm-and-wheel gear.

Described fixed contact comprises housing, be installed in fixed contact, fixed contact support, dust cap rotating shaft, dust cap, dust cap back-moving spring in the housing, connecting lever resets, two parallel fixed contact supports are fixed on the base, and fixed contact is fixedly connected on the fixed contact support; The top of housing has the strip hole, a dust cap rotating shaft is respectively installed in the both sides in strip hole, and dust cap is fixedlyed connected angled with the connecting lever that resets, and is installed in the dust cap rotating shaft, resetting connects the dust cap back-moving spring on the connecting lever, and the other end of dust cap back-moving spring is fixedly connected on the base.

The worm-and-wheel gear of insulation column spinner lower end is connected with driving mechanism by permanent-magnet operating mechanism; Described permanent-magnet operating mechanism comprises energy-stored spring case, the bistable commutator that is in transmission connection with drive unit, be provided with support in the energy-stored spring case, by Bearing Installation transverse axis is arranged on the support, the one end fixed installation energy storage brake disc of transverse axis, supporting disk in the other end fixed installation spring, other has the outer supporting disk of spring to be contained on the support by bearing holder (housing, cover), and disc spring one end is fixed on the interior supporting disk of spring, and the other end is fixed on the outer supporting disk of spring; The outer supporting disk of spring is in transmission connection by energy storage worm and gear device and power set; Transverse axis is by the power shaft of shaft joint connection bistable commutator, and the output shaft of bistable commutator is in transmission connection by worm and gear device and insulation rotating shaft.The power shaft of above-mentioned bistable commutator, output shaft, transition axis by Bearing Installation in casing, wherein be installed with power shaft combined floodgate gear and power shaft constant mesh gear on the power shaft, be slidingly fitted with output shaft doubly-linked gear by spline keyway mechanism on the output shaft, be installed with transition axis constant mesh gear and transition axis separating brake gear on the transition axis, power shaft constant mesh gear and the engagement of transition axis constant mesh gear, output shaft doubly-linked gear on output shaft in the slippage respectively with power shaft combined floodgate gear or transition axis separating brake gears engaged, connect shift fork on the output shaft doubly-linked gear.

After adopting technique scheme, this bilateral disconnects leaving to close and has following advantage:

1, the moving contact insulation column only plays the effect of support link and gear box, does not rotate the overall structure good stability;

2, owing to adopt gear box decelerator drive link, the anglec of rotation of insulation column spinner is greater than the corner of connecting rod, and the torsion that drives the insulation column spinner reduces, and has improved whole reliability and impact resistance.

3, failure rate is low, and anti-icing ability is strong, and cost is low, is applicable to cold plateau area.

Description of drawings

Fig. 1 is the wherein structural representation of a phase of an embodiment of the present utility model;

Fig. 2 is the structural representation of energy-stored spring case;

Fig. 3 is the cutaway view of bistable commutator;

Fig. 4 is the structural representation of bistable-state permanent magnet mechanism;

Fig. 5 is the cutaway view of fixed contact;

Fig. 6 is the cutaway view when moving contact incision fixed contact.

Embodiment

As shown in Figure 1, bilateral disconnection isolating switch described in the utility model comprises

Every have two fixing static contact and insulation pillars 1 and a moving contact insulation column 10 that is arranged between the two static contact and insulation pillars 1 mutually, and the top of static contact and insulation pillar 1 is equipped with fixed contact 2.The top of moving contact insulation column 10 is fixedly connected with gear box 9, be provided with vertical power input shaft 92 and power output shaft 91 by bearing in the gear box 9, fixedly connected with insulation column spinner 3 in the lower end of power input shaft 92, insulation column spinner 3 is set in parallel in a side of moving contact insulation column 10, the lower end of moving contact insulation column 10 is fixedly mounted on the base, and the lower end and the drive unit of insulation column spinner 3 are in transmission connection.The upper end of power output shaft 91 is stretched out gear box 9 and is fixedly connected on the centre of connecting rod 4, and the two ends of connecting rod 4 have moving contact 41; Distance between the two static contact and insulation pillars 1 is suitable with the length of connecting rod 4, so that the moving contact 41 at connecting rod rotation time two ends just in time can be inserted in two fixed contacts 2 simultaneously.

The lower end of above-mentioned insulation column spinner 3 is connected with driving mechanism with permanent-magnet operating mechanism by worm-and-wheel gear.

This permanent-magnet operating mechanism comprises energy-stored spring case 7 and the bistable commutator 8 that is in transmission connection with drive unit 735.

As shown in Figure 2, be provided with support 71 in the energy-stored spring case 7, by Bearing Installation transverse axis 72 arranged on the support 71, the end fixed installation energy storage brake disc 73 of transverse axis 72 has disc brake apparatus 78 on the energy storage brake disc 73; Also be installed with the interior supporting disk 74 of spring on the transverse axis 72 and worm gear arranged by Bearing Installation, other has the outer supporting disk 75 of spring to be fixedly connected on a side of worm gear, one end of disc spring 76 is fixed on the interior supporting disk 74 of spring, and the other end is fixed on the outer supporting disk 75 of spring; Worm gear by with constitute worm and gear device 77 cooperating of worm screw jointly and be in transmission connection with drive unit 735; Transverse axis 72 connects the power shaft 81 of bistable commutator 8 by shaft joint, the effect of bistable commutator 8 is that the output shaft 82 that the torsion with the equidirectional of energy-stored spring case 7 output changes bistable commutator 8 into connects the steering gear worm endless screw apparatus by shaft joint, the input shaft end fixed installation divide-shut brake brake disc 733 of steering gear worm endless screw apparatus, have disc brake apparatus on the divide-shut brake brake disc 733, the output of steering gear worm endless screw apparatus is connected by worm gear with the lower end of insulation column spinner 3.

As shown in Figure 3, bistable commutator 8 has power shaft 81, output shaft 82, transition axis 83, these three by Bearing Installation in casing, wherein be installed with power shaft combined floodgate gear 84 and power shaft constant mesh gear 85 on the power shaft 81, be slidingly fitted with output shaft doubly-linked gear 86 by spline keyway mechanism on the output shaft 82, be installed with transition axis constant mesh gear 87 and transition axis separating brake gear 88 on the transition axis 83, power shaft

constant mesh gear

85 and 87 engagements of transition axis constant mesh gear, output shaft doubly-linked gear 86 meshes with power shaft combined floodgate gear 84 or transition axis separating brake gear 88 respectively in the slippage on output shaft 82, connects shift fork 89 on the output shaft doubly-linked gear 86.Because the intermediateness of neutral can not appear in the job requirement of isolating switch, be output shaft doubly-linked gear 86 at any time must with combined

floodgate gear

84 or 88 one of them engagement of transition axis separating brake gear, in order to satisfy this requirement, (these designs and improvement are the routines of Machine Design industry except that improving in the design and installation of gear, no longer be described in detail at this), cooperate the operating mechanism of the bistable-state permanent magnet mechanism (Chinese patent 98220417.5) of employing invention in person as shown in Figure 4, thoroughly stop the problem that the manual operation shift fork may be not in place as shift fork.

The shift fork 89 that connects on the output shaft doubly-linked gear 86 is fixedly connected on the shifting fork bar 90, shifting fork bar 90 is in transmission connection with bistable-state permanent magnet mechanism, be provided with output shaft 102 in the shell 101 of bistable-state permanent magnet mechanism as shown in Figure 4, it is overhanging that output shaft 102 passes the end cap at shell 101 two ends, its front end is connected with shifting fork bar, be fixed with iron core 103 on the output shaft 102, the arranged outside of iron core 103 has permanent magnet 104, permanent magnet 104 is fixedlyed connected with shell 101, the two ends of permanent magnet 104 respectively are provided with set of pulses coil 105, output shaft 102 is set with antimagnetic axle sleeve 1011 with the contact site of shell 101, have inwardly protruded end cap magnetic boots on the shell 101 around the antimagnetic axle sleeve 1011, the middle part of the shell 101 between two pulsed coils 105 has inwardly protruded shell magnetic boots.

Above-mentioned drive unit 735 can adopt motor to cooperate worm type of reduction gearing to use, and this drive unit no longer is described in detail at this for existing known technology.

The used gear box of the utility model is a known technology, its objective is that the power with insulation column spinner 3 is delivered to power output shaft 91 by wheel, by 4 rotations of power output shaft 91 drive link.The power resources of insulation column spinner 3 are in the worm-and-wheel gear that is positioned at its bottom, and this worm-and-wheel gear arrives insulation column spinner 3 with the transmission of power of driving mechanism.

Operation principle of the present utility model is as follows:

Power set 735 drive outer supporting disk 75 rotations of spring by spring energy-storage worm and gear device 77, and this moment is because energy storage disk brake 78 is stuck with energy storage brake disc 73, supporting disk 74 can not rotate in transverse axis 72 and the spring, tightens energy-stored spring 76 stand-by when the outer supporting disk 75 of spring rotates.When 4 actions of needs connecting rod, at first handle bistable commutator 8 to the service position by electric apparatus control apparatus, the brake activation device unclamps energy storage brake disc 73 and divide-shut brake brake disc 733 then, transverse axis 72 is fast rotational under the effect of spring 76, and by 734 rotations of bistable commutator 8 driving steering screws, and the final insulation column spinner 3 that drives rotates, power input shaft 92 rotations during 3 rotations of insulation column spinner in the driven gear case 9, and through 91 rotations of middle transition gear drive power output shaft, drivening rod 4 rotations realize dividing in the time of power output shaft 91 rotations, feed motion.When connecting rod 4 actions put in place, electric apparatus control apparatus started brake gear chucking energy storage brake disc 73 and divide-shut brake brake disc 733, and transverse axis 72 and steering screw 734, insulation column spinner 3 stop operating, and branch, feed motion finish.Electric apparatus control apparatus is handled drive unit 735 and is restarted, and is the energy-stored spring energy storage, and drive unit 735 quits work when energy storage arrives set point, waits for next duty cycle.

The effect of bistable commutator 8 is the torsion that produces two kinds of different directions when making the torsion of transverse axis 72 single directions affact insulation column spinner 3 by commutation.Can certainly adopt other forms of commutator.

In addition, since the clutch end of bistable commutator 8 be connected by worm and gear between the column spinner 3 with insulating.Therefore, the anglec of rotation of insulation column spinner 3 can be no more than 360 degree when work, can judge by the angle that detects 3 rotations of insulation column spinner whether connecting rod 4 puts in place, for electric apparatus control apparatus provides data easily at the lower end installing and locating switch 736 of insulation column spinner 3.

In addition, manual energy storage handle can be installed on drive unit 735, when motor breaks down, in the time of can not energy storage, available manual energy storage can guarantee that divide-shut brake speed is unaffected.The opening and closing state of isolating switch and the state of energy-stored spring wouldn't change when energy storage brake disc and divide-shut brake brake disc can effectively guarantee bistable commutator 8 commutations, and commutator is reliably commutated.

The combination of fixed contact of the present utility model and moving contact is a cut-in type, and common contact does not have protector, can not prevent dust, and the life-span reduces greatly when using in adverse circumstances.For addressing this problem, present embodiment has adopted the fixed contact 2 with dust guard especially.As shown in Figure 5, this fixed contact 2 comprises housing 21, be installed in fixed contact 22, fixed contact support 23, dust cap rotating shaft 24, dust cap 25, dust cap back-moving spring 26 in the housing 21, connecting lever 27 resets, two parallel fixed contact supports 23 are fixed on the base, fixed contact 22 is fixedly connected on the fixed contact support 23, also have wavy groove on the contact-making surface of fixed contact 22 and moving contact, so that contact with moving contact better; The strip hole that moving contact passes through is left on the top of housing 21, a dust cap rotating shaft 24 is respectively installed in the both sides in strip hole, dust cap 25 is fixedlyed connected angled with the connecting lever 27 that resets, be installed in the dust cap rotating shaft 24, resetting connects dust cap back-moving spring 26 on the connecting lever 27, and the other end of dust cap back-moving spring 26 is fixedly connected on the base.As shown in Figure 5, at ordinary times, dust cap back-moving spring 26 connecting lever 27 tension that will reset makes dust cap 25 flatly cover the strip hole, avoids dust to enter housing 21 inside; As shown in Figure 6, the later stage of feed motion, in the time of moving contact 41 incision fixed contact 2, moving contact 41 at first backs down dust cap 25, makes the connecting lever 27 that resets turn over an angle, the space of moving contact 41 between two dust caps 25 enters the housing 21, and finally be stuck between two fixed contacts 22, after moving contact 41 put in place, dust cap 25 resetted under the effect of dust cap back-moving spring 26, still cover the strip hole above, play the dustproof effect.As a same reason, separating brake moves at first, and moving contact 41 at first backs down dust cap 25, leave housing 21 after, dust cap 25 resets under the effect of dust cap back-moving spring 26, still cover the strip hole above, play the dustproof effect.

Claims

1, a kind of bilateral disconnects isolating switch, comprising:

Every have two fixing static contact and insulation pillars (1) and a moving contact insulation column (10) that is arranged between the two static contact and insulation pillars (1) mutually, the top of static contact and insulation pillar (1) is equipped with fixed contact (2), the top of moving contact insulation column (10) is equipped with connecting rod (4), and the two ends of connecting rod (4) have moving contact (41);

It is characterized in that: the top of moving contact insulation column (10) is fixedly connected with gear box (9), be provided with vertical power input shaft (92) and power output shaft (91) in the gear box (9), fixedly connected with insulation column spinner (3) in the lower end of power input shaft (92), insulation column spinner (3) is set in parallel in a side of moving contact insulation column (10), the lower end of moving contact insulation column (10) is fixedly mounted on the base, and the lower end and the drive unit of insulation column spinner (3) are in transmission connection; The upper end of power output shaft (91) is stretched out gear box (9) and is fixedly connected on the centre of connecting rod (4).

2, a kind of bilateral according to claim 1 disconnects isolating switch, it is characterized in that: the lower end of insulation column spinner (3) is connected with driving mechanism by worm-and-wheel gear.

3, a kind of bilateral according to claim 1 and 2 disconnects isolating switch, it is characterized in that: described fixed contact (2) comprises housing (21), is installed in fixed contact (22), fixed contact support (23), dust cap rotating shaft (24), dust cap (25), dust cap back-moving spring (26), the connecting lever that resets (27) in the housing (21), two parallel fixed contact supports (23) are fixed on the base, and fixed contact (22) is fixedly connected on the fixed contact support (23); The top of housing (21) has the strip hole, a dust cap rotating shaft (24) is respectively installed in the both sides in strip hole, dust cap (25) is fixedlyed connected angled with the connecting lever that resets (27), be installed in the dust cap rotating shaft (24), the connecting lever (27) that resets is gone up and is connected dust cap back-moving spring (26), and the other end of dust cap back-moving spring (26) is fixedly connected on the base.

4, a kind of bilateral according to claim 2 disconnects isolating switch, it is characterized in that: the worm-and-wheel gear of insulation column spinner (3) lower end is connected with driving mechanism by permanent-magnet operating mechanism; Described permanent-magnet operating mechanism comprises energy-stored spring case (7), the bistable commutator (8) that is in transmission connection with drive unit (735), be provided with support (71) in the energy-stored spring case (7), support (71) is gone up has transverse axis (72) by Bearing Installation, the one end fixed installation energy storage brake disc (73) of transverse axis (72), supporting disk (74) in the other end fixed installation spring, other have the outer supporting disk (75) of spring by Bearing Installation on support (71), disc spring (76) one ends are fixed on the interior supporting disk (74) of spring, and the other end is fixed on the outer supporting disk (75) of spring; The outer supporting disk (75) of spring is in transmission connection by energy storage worm and gear device (77) and drive unit (735); Transverse axis (72) is by the power shaft (81) of shaft joint connection bistable commutator (8), and the output shaft (82) of bistable commutator (8) is in transmission connection by worm and gear device and insulation column spinner (3); The power shaft (81) of bistable commutator (8), output shaft (82), transition axis (83) by Bearing Installation in casing, wherein be installed with power shaft combined floodgate gear (84) and power shaft constant mesh gear (85) on the power shaft (81), output shaft (82) is gone up and is slidingly fitted with output shaft doubly-linked gear (86) by spline keyway mechanism, be installed with transition axis constant mesh gear (87) and transition axis separating brake gear (88) on the transition axis (83), power shaft constant mesh gear (85) and transition axis constant mesh gear (87) engagement, output shaft doubly-linked gear (86) meshes with power shaft combined floodgate gear (84) or transition axis separating brake gear (88) respectively when output shaft (82) is gone up slippage, and output shaft doubly-linked gear (86) is gone up and connected shift fork (89).