CN2904260Y - High power DC isolation switch - Google Patents
High power DC isolation switch Download PDFInfo
- Publication number
- CN2904260Y CN2904260Y CN 200620022947 CN200620022947U CN2904260Y CN 2904260 Y CN2904260 Y CN 2904260Y CN 200620022947 CN200620022947 CN 200620022947 CN 200620022947 U CN200620022947 U CN 200620022947U CN 2904260 Y CN2904260 Y CN 2904260Y
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- CN
- China
- Prior art keywords
- main shaft
- draw bar
- fork
- isolating switch
- high power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a large power dc disconnector, comprising pedestal components, conducting components, limit switch components, electromagnetic lock components and operating components. The top and middle part of the main shaft of the switch pedestal components where the swing-bars are connected, is provided with two ball bearings on each side, while the swinging and rotating part of the swing-bars adopts the non-inner micro needle bearing and the operating components use the manual or air operation mechanism to realize the remote operation of the switch. The disconnector is simply operated and labor saved with good safety performance, long service life and available to operate from a far distance, which is suitable for the power transmission and distribution system of metro and light railway.
Description
Technical field
The utility model relates to a kind of high power DC isolating switch, relates in particular to a kind of high power DC isolating switch that is applied on subway and the light rail electrical power trans mission/distribution system.
Background technology
At present, the high power DC isolating switch generally adopts the technology of West Germany, with the immediate prior art of the utility model be West Germany---France Ferraz Shawmut company single-throw motor operation product.As illustrated in fig. 1 and 2, this product comprises support component I, conductive component II, limit switch parts III, overload protection parts IV, DC motor control member V.
The weak point of this product is:
1, main shaft improves hardness without heat treatment, and directly cooperates with aluminium matter support, forms sliding friction pair, and so soft-soft combination is friction relatively at work, can produce bigger wearing and tearing.And because all cradle head positions of each member of its design are the dry friction sliding friction pair, and its coefficient of sliding friction is big, and abrasion is big, mechanical endurance is short.
2, in conductive component,, all use traditional fine copper dewax hot investment casting and make by three large-scale conducting terminals of big electric current.This precision casting process complexity, casting cycle speciality.Metalworking requires quantities big.The cost height, the cycle is long, at the bottom of the rate of finished products.
3, the manual operating heavy DC isolating switch of the said firm's production.Its manual operating handle, directly design is at the spindle end of switch.(Shanghai Underground import with French Shawmut company product) is just because each rotation and joint part are the dry friction sliding pair.So operational torque needs big.General moment need be 175 Newton meters, and its pull bar is designed to 0.5 meter long.Therefore active force is 350 newton, and this is difficult competent for the girl.
Another wretched insufficiency part of this product is that operating personnel must the proximity switch operation.The operator must open the Electric Appliance Cabinet door, enters and removes console switch in the regulator cubicle.Regulator cubicle must design enough hugely like this, can allow the more convenient turnover of operator.To guarantee man-machine safety.His regulator cubicle needs especially big, the also speciality of busbar of confluxing.The auxiliary construction cost that this product was put to is bigger, and floor space is also many.Operate both heavy, both inconvenient, also dangerous.
The utility model content
(1) technical problem that will solve
The utility model purpose provides that a kind of frictional force is low, fail safe good, can remote operated high power DC isolating switch.
(2) technical scheme
For achieving the above object, a kind of high power DC isolating switch that the utility model provides, comprise: support component, conductive component, control member, described support component is provided with main shaft, middle fork, other fork, two little and draw bar, main shaft is installed on the support, middle fork and other fork lay respectively at the centre and the right-hand member of main shaft, and link to each other with main shaft, and other fork links to each other with draw bar by little axle; Described conductive component comprises the insulation draw bar, and conductive component is positioned on the support component, and insulation is drawn bar and linked to each other with middle fork by a little axle; Described control member links to each other with support component, and the both sides of the position that links to each other with middle fork on main shaft respectively are provided with two ball bearings; Described little axle is equipped with the miniature needle bearing of no inner ring;
Wherein, conductive component is provided with three conducting terminal base plates and terminal board, is welded with silver-colored solder brazing; The conducting end daughter board is provided with moving plug-in strip, is pressed with on the moving plug-in strip and is furnished with silver contact.Three conducting heavy current terminals are all used silver-colored solder brazing technology, are welded.
Wherein, control member has dual mode: mode one is to adopt manual-operating mechanism, manual operating mechanism comprises operating grip, manual operating mechanism main shaft, eccentric shaft, disk and draw bar, the operating grip riveted is on disk, eccentric shaft is on disk, eccentric shaft is connected with draw bar, and draw bar is connected with draw bar on being connected other fork.When operating grip, the handle disc rotated makes eccentric shaft, draw bar move forwards or backwards, thereby has promoted to be connected in the other fork of the main shaft right-hand member of isolating switch, makes switch spindle obtain torque and works.Wherein, manual operating mechanism main shaft both sides are provided with each two Miniature ball bearing, and the needle bearing of a no inner ring is set between draw bar and the eccentric shaft, make the rapid drawdown of dyanainic friction coefficient.Therefore realized the remote operation high power switch, as the biconditional operation small power switch, slim and graceful and terse.Mode two is to adopt air-operated control mechanism, comprise base plate, two and half cylinders, tooth bar, two pistons, gear, about two and half cylinders be fixed on the base plate, about two pistons be arranged in cylinder, tooth bar is fixed on the left and right piston, tooth bar be connected to gears engaged on the isolating switch main shaft, when a cylinder left side or right air inlet, the promotion piston moves, thereby with gear on the fixing rack drives main shaft of piston main shaft is rotated, and realizes that isolating switch opens or close.Select wherein a kind of mode as operating mechanism, be used for the folding control of switch.
(3) beneficial effect
A kind of high-power isolating switch that the utility model provides, have that simple, labor-saving and safe performance is good, long service life, save a large amount of copper materials, at the bottom of total manufacturing cost, and can remote operation etc. advantage, be particularly useful for electrical power trans mission/distribution systems such as subway, light rail.
Below in conjunction with the drawings and specific embodiments, the utility model is done more detailed explanation.
Description of drawings
Fig. 1 is the lateral plan of single-throw motor operation high power DC isolating switch general assembly drawing in the prior art;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is total figure of the utility model manual manipulation mechanism;
Fig. 4 is the lateral plan of the utility model general assembly drawing (except that operating mechanism);
Fig. 5 is the front view of Fig. 4;
Fig. 6 is the installation diagram of the utility model support component and conductive component;
Fig. 7 is the partial sectional view of A-A among Fig. 6;
Fig. 8 is the partial sectional view of B-B among Fig. 6;
Fig. 9 is the utility model manual manipulation mechanism installation diagram;
Figure 10 is the utility model gas operating mechanism installation diagram;
Figure 11 is the C-C partial sectional view among Fig. 8, and the right is its left view, that is to say
This uses the structure chart of novel conducting heavy current terminal
Among the figure: I, support component; II, conductive component; III, limit switch parts; IV, electromagnetic lock parts; V, control member; VI, manual operating parts; 1, switch spindle; 2, middle fork; 3, insulation draw bar; 4, moving plug-in strip; 5, silver-tungsten alloy soil for electrical contact; 6, terminal board; 7, silver brazing sheet; 8, brass screw; 9, terminal base plate; 10, manual operating mechanism main shaft; 11, eccentric shaft; 12, operating grip; 13, disk; 14, draw bar; 15, cylinder base plate; 16, two and half cylinder block; 17, cylinder piston; 18, be fixed on tooth bar on the piston of both sides; 19, main shaft cogs; 20, other fork; 21, draw bar; 22, little axle; 23, ball bearing; 25 little axles; 26, needle bearing; 27, ball bearing.
Embodiment
Embodiment 1 adopts the high-power isolating switch of manual manipulation mechanism
With the double-throw switch is example
As Fig. 3, Fig. 4 and shown in Figure 5, the utility model comprises support component I, conductive component II, limit switch parts III, electromagnetic lock parts IV and manual manipulation parts VI.Fig. 6 is support component I of the present utility model and conductive component II, for simplicity, figure is divided into support component I (as shown in Figure 7) and two parts of conductive component II (as shown in Figure 8).As shown in Figure 7, main shaft 1 right-hand member is the external force input, promptly goes out axle head on main shaft 1 right side and is provided with fork 20 on one side, and the lower end of other fork 20 has minor axis 22 to be connected with the draw bar 14 of draw bar 21 with the VI of manual operating mechanism.The work done of long-range manual operating mechanism promotes other forks 20 by draw bar 21, makes switch spindle 1 obtain torque, drives the middle fork 2 that is connected with main shaft 1 key.Middle fork 2 tops by little axle 25 with about two thoroughly do away with edge draw bars 3 and link.And insulation draw bar 3 other ends and four link moving plug-in strip 4, (as shown in Figure 8) so,, drive four moving plug-in strip 4 by swing-bar mechanism when the manual operating mechanism action, in that last closing/middle branch/down closing three service positions switches mutually, satisfies the working condition requirement of isolating switch.
One of the utility model innovation is support I parts, has all implemented rolling friction, miniature bearingization, and its implementation method is as follows:
1) main shaft 1 two ends are provided with four ball bearings 23, combine with the steel support by duralumin matter magnetic shield.
2) lower end and the draw bar 21 of the other fork 20 of input with the miniature needle bearing of little axle 22 and one no inner ring, are formed the rolling friction pair.
3) the little axle 25 in middle fork 2 upper ends is provided with the needle bearing 26 that has or not inner ring, with little axle 25 with about two thoroughly do away with edge draw bars 3 and be connected.And insulation draw bar 3 is that epoxy resin, glass evil spirit laminated sheet are made, itself promptly is the wear-resistant plastic bearing.And corner is very little in draw bar work, so bearings with rolling friction is not set.
Support component has been implemented in full the rolling friction pair that has lubricant grease lubricated, has replaced the dry friction sliding friction pair of traditional old product.The factor that rubs in theory drops to 0.003 from 0.17, and improves and use under the situation of bearing at machining accuracy, and the component movement precision of switch is much improved.In actual measurement, originally the opplied moment of operator operating mechanism needs 175 Newton meters to drop to below 17.5 Newton meters thus, and required opplied moment has descended more than 10 times.Simultaneously because the raising of motion of mechanism precision, the rapid drawdown of required active force, increase by 500 above the useful life of whole switch.
Two of the utility model innovation is conductive component II, and its implementing method is as follows:
As shown in figure 11, the terminal base plate 9 of conducting terminal, and terminal board 6 by the copper coin material, is tailored and is formed.On terminal floor 9, be milled with two silver brazing grooves, with in the loose fit insertion groove, bottom land is spread silver brazing sheet 7 with two terminal boards, uses four brass screws 8 then, with two terminal boards 6, is fixed on the base plate 9.Use oxygen-acetylene generator heating, and should go the silver brazing bar under 750 ℃ of left and right sides temperature, silver solder dissolving soldering.6 two kinds of the Worker's Stadiums of terminal base plate 9 and terminal board firmly are welded in the solder slots, have become novel conducting heavy current terminal.
Three of the utility model innovation is manual operating parts VI, promptly long-range manual operating mechanism, it can be arranged on outside the regulator cubicle, in the operation cabinet high-power isolating switch with operate that P cock is the same has realized remote operation.And further reduced the operating physical force of switch, and avoided huge regulator cubicle manufacturing, subway general layout that power transmission and distribution are arranged is greatly simplified, saved artificial, material and manufacturing expense, improved people, machine fail safe, its implementation method is as follows:
As shown in Figure 9, manual operating mechanism comprises manual manipulation mechanism main shaft 10, operating grip 12, eccentric shaft 11, disk 13, reaches draw bar 14.Manual manipulation mechanism main shaft 10 is positioned at the center of disk, and operating grip 12 riveteds have eccentric shaft 11 on the disk 13 on disk 13, establish draw bar 14 on the eccentric shaft.When operating grip, handle all travels forward toward drop-down eccentric shaft 11 and draw bar 14,21, has promoted to be connected in the other fork 20 of main shaft 1 right-hand member of isolating switch, makes switch spindle 1 acquisition torque and works.Respectively be provided with two Miniature ball bearings 27 on manual manipulation mechanism main shaft 10 both sides, the needle bearing 26 of a no inner ring is set between the draw bar 14 of power output and the eccentric shaft.Make the rapid drawdown of dyanainic friction factor.Therefore realized the remote operation high power switch, as the biconditional operation small power switch, slim and graceful and terse.
Its main part is with embodiment 1, and its control member adopts pneumatic operator, and its execution mode is as follows:
As shown in figure 10,15 is the cylinder base plate among the figure, and it can directly be placed in a side of large-scale switch support.Base plate 15 is provided with two half-open cylinders 16, and two pistons 17 are arranged in the cylinder 16, is provided with tooth bar 18 between the two-piston 17, and tooth bar 18 is meshed with gear 19 on being connected to main shaft 1.Therefore when cylinder 16 left side or right air inlets, piston 17 is moved, the gear 19 that the tooth bar 18 on the piston 17 drives on the main shaft 1 makes main shaft 1 obtain torque, realizes opening or closing of switch.
More than be preferred forms of the present utility model, according to the disclosed content of the utility model, some identical, replacement schemes that those of ordinary skill in the art can expect apparently all should fall into the scope that the utility model is protected.
Claims (4)
1, a kind of high power DC isolating switch, comprise: support component, conductive component, control member, described support component is provided with main shaft (1), middle fork (2), other fork (20), little axle (22,25) and draw bar (21), main shaft (1) is installed on the support, middle fork (2) and other fork (20) lay respectively at the centre and the right-hand member of (1) of main shaft, and link to each other with main shaft (1), other fork (20) links to each other with draw bar (21) by little axle (22); Described conductive component comprises insulation draw bar (3), and conductive component is positioned on the support component, and insulation draw bar (3) links to each other with middle fork (2) by a little axle (25); Described control member links to each other with support component, it is characterized in that: respectively be provided with two ball bearings (23) on the last both sides with middle fork (2) link position of main shaft (1); Described little axle (22,25) is equipped with the miniature needle bearing (26) of no inner ring.
2, high power DC isolating switch according to claim 1 is characterized in that, described conductive part body is provided with three conducting terminal base plates (9) and terminal board (6), is welded with silver-colored solder brazing; The conducting end daughter board is provided with moving plug-in strip (4), is pressed with on the moving plug-in strip (4) and is furnished with silver contact (5).
3, high power DC isolating switch according to claim 1, it is characterized in that: described control member is a manual control mechanism, comprise operating grip (12), manual manipulation mechanism main shaft (10), eccentric shaft (11), disk (13), draw bar (14), described operating grip (12) one ends are fixed on the disk (13), and link to each other with manual manipulation mechanism main shaft (10), eccentric shaft (11) is located on the disk (13), eccentric shaft (11) is connected with draw bar (14), draw bar (14) is connected with draw bar (21) on the support component, described manual manipulation mechanism's main shaft (10) both sides respectively are provided with two Miniature ball bearings (27), and the needle bearing (26) of a no inner ring is set between described draw bar (14) and the eccentric shaft (11).
4, high power DC isolating switch according to claim 1, it is characterized in that: described operating mechanism is an air-operated control mechanism, comprise base plate (15), two and half cylinders (16), tooth bar (18), two pistons (17), gear (19), about two and half cylinders (16) be fixed on the base plate (15), about two pistons (17) be arranged in cylinder (16), tooth bar (18) is fixed on the left and right piston (17), tooth bar (18) and gear (19) engagement that is connected on the isolating switch main shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022947 CN2904260Y (en) | 2006-04-28 | 2006-04-28 | High power DC isolation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620022947 CN2904260Y (en) | 2006-04-28 | 2006-04-28 | High power DC isolation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2904260Y true CN2904260Y (en) | 2007-05-23 |
Family
ID=38079673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620022947 Expired - Fee Related CN2904260Y (en) | 2006-04-28 | 2006-04-28 | High power DC isolation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2904260Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308732B (en) * | 2007-10-17 | 2010-06-02 | 河南平高电气股份有限公司 | Electric connection apparatus for high-voltage isolating switch |
| CN102646540A (en) * | 2012-04-05 | 2012-08-22 | 宁波耀华电气科技有限责任公司 | Isolating switch assembly |
| CN105070572A (en) * | 2015-07-29 | 2015-11-18 | 苏州上电科电气设备有限公司 | Low-current pneumatic knife switch |
| CN107564739A (en) * | 2017-11-02 | 2018-01-09 | 中车株洲电力机车有限公司 | A kind of earthed switch |
| CN108962663A (en) * | 2018-04-02 | 2018-12-07 | 杨维雄 | A kind of high-power disconnecting switch of middle pressure AC and DC |
| CN111952102A (en) * | 2020-07-28 | 2020-11-17 | 金晓亮 | Universal switching type medium-voltage isolating switch for rail transit |
-
2006
- 2006-04-28 CN CN 200620022947 patent/CN2904260Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308732B (en) * | 2007-10-17 | 2010-06-02 | 河南平高电气股份有限公司 | Electric connection apparatus for high-voltage isolating switch |
| CN102646540A (en) * | 2012-04-05 | 2012-08-22 | 宁波耀华电气科技有限责任公司 | Isolating switch assembly |
| CN105070572A (en) * | 2015-07-29 | 2015-11-18 | 苏州上电科电气设备有限公司 | Low-current pneumatic knife switch |
| CN107564739A (en) * | 2017-11-02 | 2018-01-09 | 中车株洲电力机车有限公司 | A kind of earthed switch |
| CN108962663A (en) * | 2018-04-02 | 2018-12-07 | 杨维雄 | A kind of high-power disconnecting switch of middle pressure AC and DC |
| CN111952102A (en) * | 2020-07-28 | 2020-11-17 | 金晓亮 | Universal switching type medium-voltage isolating switch for rail transit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070523 |