CN201812690U

CN201812690U - Three-station mechanism for realizing quick tripping

Info

Publication number: CN201812690U
Application number: CN2010205401034U
Authority: CN
Inventors: 廖柱成; 廖明厚
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-17
Filing date: 2010-09-17
Publication date: 2011-04-27
Anticipated expiration: 2020-09-17

Abstract

The utility model relates to a three-station mechanism for realizing quick tripping, which comprises a box cover, a front plate, an intermediate plate and a rear plate, wherein motors and two small shafts and two worms are respectively arranged in space between the intermediate plate and the rear plate and on both sides of the space; the rotation of the small shafts is transmitted to the respective worms on two sides by clutch devices and to the worm gears on left and right sides to drive the worm gears to rotate; a driving plate is arranged at the medial axis by a driving shaft; a turn arm and a crank are matched with the driving plate; a rack wheel is fixed on the driving shaft on the rear of the driving plate and is meshed with a pinion wheel; the pinion wheel is arranged on an output shaft; and a spring energy storing device for switching on an isolating switch is arranged between the intermediate plate and the rear plate. By the three-station mechanism, the interlocking of the isolating switch and a grounding switch can be realized, and the isolating switch has high switching on speed.

Description

Realize the three position mechanism of quick acting switching-off

Technical field

The utility model relates to a kind of gas-insulated switchgear, particularly relates to a kind of three position mechanism of GIS switchgear.

Background technology

GIS (Gas insulated Switchgear) Cubicle Gas-Insulated Switchgear, it with circuit breaker, isolating switch, earthed switch, voltage transformer, or the like equipment all organic assembling become an integral body.Its advantage is that floor space is little, the reliability height, and high safety, maintenance workload is little, therefore is widely used in power domain.

The isolation of existing fully closed combined electric unit, the operating mechanism of earthed switch mostly are the motor drive mechanism of two stations, finish branch, closing operation by motor-driven screw mandrel and the transmission of feed screw nut's connecting rod, there is the defective that is not easy upper boom behind feed screw nut's lower beam in such mechanism, can not operate simultaneously that three stations are isolated, earthed switch.And also there are defectives such as volume is big, operating physical force is big, amount of parts is many in this mechanism.

Existing three position mechanism isolated location and earthing position divide-shut brake speed are same, and domestic Phase in One Tank Type GIS requires to isolate position or ground connection position quick acting switching-off when the big sense of current develops.The producer of mechanism that has changes the opening velocity of isolating the position with the method that changes the motor output speed, but it can not be from dealing with problems in essence, because motor speed is accelerated, it is fast that divide-shut brake speed is all wanted; And after motor speed accelerated, mechanism puts in place, and stop can be very difficult reliable and stablely.Switch producer is limited to the reason of mechanism, isolating switch and earthed switch branch can only be arranged to the very high mechanism of rate request when design isolated switch and earthed switch, therefore so just increases manufacturing cost and increases floor space.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of at above-mentioned prior art present situation can realize isolating switch quick acting switching-off and earthed switch and the different three position mechanism of isolating switch combined floodgate opening velocity.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of three position mechanism of realizing quick acting switching-off, comprise the case cover and be positioned at the case cover this case cover is divided into header board, intermediate plate and the back plate in 3 spaces, and it is characterized in that:

In described intermediate plate and the back space between the plate, the position, both sides is respectively equipped with motor, has motor gear on the output shaft of motor bottom, described motor gear respectively with the little axle at position, both sides on gear be complementary;

Two little axles and two worm screws on the position, both sides are separately fixed between intermediate plate and the header board, rotatablely moving of little axle drives to both sides worm screw separately by the clutch apparatus on the position, both sides respectively, and drive is rotated with the worm gear of the left and right side that the both sides worm screw is matched respectively, the worm gear in left side is installed between intermediate plate and the header board with connecting lever is coaxial, and the worm gear on right side is installed between intermediate plate and the header board with crank is coaxial;

Drive plate is installed between intermediate plate and the header board by driving shaft, and be positioned on the axis of described three position mechanism, the left side of described drive plate has skewed slot, pin on the described connecting lever moves in described skewed slot, and the right side of described drive plate has a pin and is complementary with the breach of stepping down that described crank has;

Be fixed with a gear wheel on the driving shaft between described drive plate rear, described intermediate plate and the back plate, described gear wheel is meshed with a pinion, described pinion is installed on the output shaft, and the spring energy storage device that releases energy when compressed energy-storage, isolating switch separating brake when between described intermediate plate and described back plate isolating switch being installed also and closing a floodgate.Such three position mechanism not only can be realized the interlock function of isolating switch and earthed switch, and can make isolating switch have closing speed faster.

Preferably, little axle on the position, described both sides is installed between described intermediate plate and the header board by the clutch base and the positioning seat of both sides respectively, the worm screw of described both sides is installed between intermediate plate and the header board by the bearing pedestal and the middle base of both sides respectively, and described bearing pedestal, middle base, clutch base and positioning seat are spaced successively from top to bottom.

Preferably, in order to make isolating switch and the earthed switch can clutch effectively when the divide-shut brake separately, described clutch apparatus comprises clutch sleeve, the location recognition plate, screw rod, return spring and little connecting lever, wherein said screw rod is connected between described middle base and the described clutch base, described return spring is placed in the described screw rod outside, described location recognition plate is bending parts, it vertically partly is positioned at the described worm screw outside and has two between the upper and lower every the adjustment screw that is provided with, its lateral part is inserted between described middle base and the clutch base and with described clutch sleeve and fixes, described lateral part is also passed for screw rod, the top and the bottom of described clutch sleeve have two elongated slots respectively, and be inserted with the pin on the worm screw that is positioned at clutch sleeve top in the described elongated slot respectively and be positioned at pin on the little axle of described clutch sleeve below, described little connecting lever is fixed on the described intermediate plate, two pins that are provided with at interval on one end and the described worm gear match, and on the other end and the described location recognition plate two match every the adjustment screw of setting between the upper and lower.

Preferably, the lateral part of described location recognition plate has the hole of big breach and big breach both sides, described big breach is inserted in the groove of described clutch sleeve outer surface and with described clutch sleeve and fixes, and in the described hole nylon jacket is housed, and passes for screw rod in the described nylon jacket.

In order to make described clutch sleeve can must deviate from worm screw and little axle smoothly, an end face of described clutch sleeve is left-handed cam, and another end face is the dextrorotation cam.

For isolating switch being had faster when the separating brake and being different from speed when closing a floodgate, described spring energy storage device comprises driving wheel, disk, guide rod, spring base, stage clip and two rollers, wherein said driving wheel and disk are installed on the described output shaft, described disk is two, lay respectively at the both sides, front and back of described driving wheel, have on the described disk along the deep-slotted chip breaker on its circumferencial direction, described two rollers link to each other with guide rod with spring base respectively, the roller that links to each other with guide rod is fixed between described intermediate plate and the back plate by pin and this pin is inserted in the deep-slotted chip breaker of disk, the described roller that links to each other with spring base is fixed between intermediate plate and the back plate by the copper cover for seat, stage clip is placed in the described spring base and the guide rod outside, and be butted between the two, have the breach that matches with an end of described guide rod on the described driving wheel.

Compared with prior art, advantage of the present utility model is: this GIS switchgear is when isolating switch closes a floodgate, and earthed switch is failure to actuate, and isolating switch could the operational grounding switch when the separating brake position, makes its combined floodgate; When earthed switch closed a floodgate, isolating switch was failure to actuate, and earthed switch could disconnecting switch operation close a floodgate when the separating brake position, reaches the interlock function of isolating switch and earthed switch.Mechanism has bidirectional clutch, can realize wide-angle adjusting angle and mechanical dropout protection switch function.And the utility model owing to have spring energy storage device, can be realized isolating switch or earthed switch quick acting switching-off when disconnecting switch operation, thereby protection switch.

Description of drawings

Fig. 1 is the vertical view cutaway drawing of quick acting switching-off three position mechanism of the present utility model.

Fig. 2 is the cutaway view along A-A line among Fig. 1 of the present utility model.

Fig. 3 is the cutaway view along B-B line among Fig. 1 of the present utility model.

Fig. 4 is the cutaway view along C-C line among Fig. 1 of the present utility model.

Fig. 5 is the running status schematic diagram of quick acting switching-off three position mechanism of the present utility model, earthed switch "on" position among Fig. 5 a wherein, Fig. 5 b for isolate, earthed switch opens a sluice gate state, Fig. 5 c is the isolating switch "on" position.

1---2---3---4---5---6---7---8---9---10---11---12---13---14---15---16---17---18---19---20---21---22---23---24---25---26---27---28---29---30---31---32---33---34---35---36---37---38---39---40---41---42---43---44---45---46---47---48---49---50---51---52---53---54---55---56---57---58---59---60---61---62---63---64---65---66---67---68---69---

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

This three position mechanism is shown in Fig. 1-4, and its internal structure is a three-ply board parcel form, and parts are installed between header board 3, the intermediate plate 2 back plates 1.Motor 45 in the space between intermediate plate 2 and the back plate 1 on the position, both sides utilizes motor fixing plate 47 to be fixed on the plate 1 of back respectively, have motor gear 46 on motor 45 output shafts, on motor gear 46 and the little axle 37 with gear 35 pairings use, little axle 37 is rotated.Little axle 37 is by clutch base 34, positioning seat 36 is installed between intermediate plate 2 and the header board 3, worm screw 26 is by bearing pedestal 25, middle base 29 is installed between intermediate plate 2 and the header board 3, little axle 37 respectively has a trundle 31 with worm screw 26, two elongated slots that in the middle of clutch 33, extend from clutch sleeve 33 bottoms that clutch sleeve 33 belows have, trundle 31 on the little axle 37 is inserted in the elongated slot of clutch sleeve 33 belows, the top of clutch sleeve 33 also has two elongated slots that extend from clutch sleeve 33 tops in the middle of clutch sleeve 33, trundle 31 on the worm screw 26 also is inserted in the elongated slot on the clutch sleeve 33, because the elongated slot position, the left and right sides of having limited trundle 31, the rotatablely moving of little axle 37 passed to worm screw 26 by clutch sleeve 33 and rotated.Left and right two worm gears 23 are with respect to worm screw 26 more close axis, the worm gear 23 and the connecting lever 24 in left side are installed between intermediate plate 2 and the header board 3 by left worm-wheel shaft 21, the worm gear 23 on right side and crank 22 are installed between intermediate plate 2 and the header board 3 by right worm-wheel shaft 20, and rotatablely moving of worm screw 26 makes connecting lever 24 and crank 22 make reverse motions perpendicular to worm movement respectively by worm gear 23.Drive plate 19 is arranged on the axis, it is installed between intermediate plate 2 and the header board 3 by driving shaft 18, the pin of installing on the connecting lever 24 64 move in the skewed slot in drive plate 19 left sides and is the reverse motions of driving shaft 18 with the movement conversion of connecting lever 24, and the pin 66 of installation that moves through on the drive plate 19 of another side crank 22 is converted to driving shaft 18 and makes reverse motions.

Respectively there is a cover clutch apparatus on the both sides of this three position mechanism between intermediate plate 2 and header board 3, and it is made up of clutch sleeve 33, location recognition plate 27, screw rod 68, nylon jacket 32, return spring 30, little connecting lever 28.Screw rod 68 is fixed between middle base 29 and the clutch base 34, and return spring 30, nylon jacket 32 are installed between middle base 29 and the clutch base 34 by screw rod 68.Described location recognition plate 27 is a crimp, wherein vertically partly is positioned at the outside of described worm screw 26 and little axle 37, and the lateral part is between described middle base 29 and clutch base 34.And the described location recognition plate 27 vertically outside of part has two spaced apart adjustment screws up and down.The aperture that has a big breach and both sides on the lateral part of location recognition plate 27, fix in the groove of the big breach embeddeding clutch cover 33 of the lateral part of described location recognition plate 27 and with clutch sleeve 33, nylon jacket 32 is put location recognition plate 27 holes into, passes for screw rod 68 in this nylon jacket 32.This return spring 30 is divided into two sections, and between the upper surface that a section is butted on described middle base 29 and location recognition plate 27 lateral parts, another section is butted between the lower surface and clutch base 34 of location recognition plate 27 lateral parts.Little connecting lever 28 is installed on the intermediate plate 2 by screw pin, one end of little connecting lever 28 is complementary with the adjustment screw between two adjustment screws up and down described location recognition plate 27, the other end is complementary with pin 67 between the pin 67 at two intervals on the worm gear 23.Connecting lever 24, rotatablely moving of crank 22 is transformed into the rectilinear motion of location recognition plate 27 by pin 67 and little connecting lever 28, be with clutch sleeve 33 on the breach of location recognition plate 27, an end face of clutch sleeve 33 is the dextrorotation cam, an end face is left-handed cam, earthed switch for the left side, the upper surface of its clutch sleeve 33 is the dextrorotation cam, the lower surface is left-handed cam, isolating switch for the right side, the upper surface of its clutch sleeve 33 is left-handed cam, the lower surface is the dextrorotation cam, and the such setting of clutch 33 covers separates little axle 37 and clutch sleeve 33 when can be used for clutch.When location recognition plate 27 is being with clutch sleeve 33 to make progress or is being moved downward, trundle 31 on little axle 37 or the worm screw 26 will be separated from the elongated slot on clutch sleeve 33 bottoms or top, trundle 31 on the little axle 37 or the trundle 31 on the worm screw 26 will overlap 33 by holdback clutch, reach the effect of clutch; After external force was removed, location recognition plate 27 and clutch sleeve 33 restored to the original state under the reset force effect of return spring 30.

In order to cooperate the switch angle, to isolate position opening velocity requirement, mechanism has arranged the gear wheel 16 and the pinion 17 of a stable drive ratio between back plate 1 and intermediate plate 2, and spring energy storage device has been installed.Described gear wheel 16 is installed on the driving shaft 18, and pinion 17 is installed on the output shaft 4, and gear wheel 16 is meshed with pinion 17.As shown in Figure 4, this spring energy storage device comprises fixedly guide rod 9, roller 8, spring base 11 and the roller 14 of stage clip 10 usefulness, disk 6 and driving wheel 5, roller 8 is installed between back plate 1 and the intermediate plate 2 by copper sheathing seat 13, copper sheathing seat 15 by pin 12, roller 14 by pin 7, spring base 11.Stage clip 10 be placed in guide rod 9 and spring base 11 outsides and be butted on guide rod 9 and spring base 11 between, roller 8 is connected with an end of guide rod 9 guide rod 9 can be rotated along with roller 8, spring base 11 is connected with roller 14 can be along with roller 14 rotations.Described disk 6 lays respectively at the both sides, front and back of driving wheel 5, have on the disk 6 and prolong the deep-slotted chip breaker 69 that its circumferencial direction extends, pin 7 on the roller 8 passes from the deep-slotted chip breaker 69 of two disks 6, one long flat key groove is arranged on the output shaft 4, and disk 6, driving wheel 5, pinion 17 are installed between back plate 1 and the intermediate plate 2 by output shaft 4.The gear wheel 16 that moves through that driving shaft 18 is done passes to output shaft 4 with pinion 17, when output shaft 4 is made output movement, apply active force for the pin 7 on the roller 8 by the deep-slotted chip breaker on the disk 6 69, and having breach on the driving wheel 5 matches with an end of described guide rod 9 and offsets, when isolating the position combined floodgate, give stage clip 10 energy storage, output shaft 4 drives driving wheel 5 and stirs guide rod 9 when isolating the position separating brake, stage clip 10 rapid release energy, drive output shaft 4 rapid movements by pin 7 and disk 6, isolate position opening velocity requirement thereby reach.

Between header board 3 and intermediate plate 2, also have magnetic blow-out switch 51, eccentric wheel 52 regulates 53, pull bar 54, seat 55, bevel gear 56, bevel gear 57, bar 58, magnetic blow-out switch 59, cover plate 60, pinion 61 and auxiliary switch 62.The routine that is configured to this field of these parts disposes, and does not do at this and gives unnecessary details.

The operating principle of three position mechanism: Fig. 5 b is the state diagram that earthed switch, isolating switch are in separating brake position structure on opportunity, Fig. 5 a is the state diagram that earthed switch is in mechanism when closing a floodgate, Fig. 5 c is the state diagram that isolating switch is in mechanism when closing a floodgate, in the middle of practical application, can be according to the use location, with mechanism's mirror image.That is to say that both sides can both operational grounding switch and isolating switch.Among Fig. 5 b, pin 64 is under drive plate 19 skewed slots upper end, trough rim summit, under the breach of pin 66 and crank 22 the breach limit near, drive plate can not rotate, this state is the situation that earthed switch and isolating switch are in gate-dividing state simultaneously.Concrete divide-shut brake motion is described below:

1, the combined floodgate motion of earthed switch: motor 45 energisings on the left side, when making motor gear 46 do counterclockwise to move, connecting lever 24 is that motion is clockwise done in the axle center with left worm-wheel shaft 21, when under the skewed slot that moves to drive plate 19 during trough rim, pin 64 can slip in the skewed slot of drive plate 19, sell the strong effect of 64 pairs of drive plates 19, along with moving downward of connecting lever 24, drive drive plate 19 and the driving shaft 18 that connects thereon, gear wheel 16 is done counterclockwise rotatablely moving, gear wheel 16 drives the pinion 17 and the output shaft 4 that are engaged with and does clockwise motion, the motion of output shaft 4 drives earthed switch and does the motion of closing a floodgate, and the while also drives disk 6 and driving wheel 5 is done motion clockwise.The motion of disk 6 and driving wheel 5 is not contact the end face of deep-slotted chip breaker 69 of disk 6 and driving wheel 5 at pin 7 to bump under the situation less than guide rod 9 and move, so the motion of the combined floodgate of earthed switch is the motion that does not drive spring energy-storage.When moving to shown in 5a state, the pin 67 that be contained on the connecting lever 24 this moment withstands on the adjustment screw of location recognition plate 27 belows with little connecting lever 28, little connecting lever 28 is done motion counterclockwise, promoting location recognition plate 27 moves downward, location recognition plate 27 moves downward drive clutch sleeve 33 and moves downward, the trundle 31 that clutch sleeve 33 is thrown off on the worm screw 26, rotatablely moving of little axle 37 can not be delivered on the worm screw 26, worm screw 26 is no longer rotated, drive plate 19 motions are limited by pin 64, limit switch switches to the motor outage in the time of therewith, and combined floodgate is finished.

2, the separating brake motion of earthed switch: motor 45 energisings on the left side, when motor gear 46 is moved clockwise, connecting lever 24 is that motion is counterclockwise done in the axle center with left worm-wheel shaft 21, sell the strong effect of 64 pairs of drive plates 19, make drive plate 19 do clockwise rotatablely moving, along with moving upward of connecting lever 24, drive drive plate 19 and the driving shaft 18 that connects thereon, gear wheel 16 is done clockwise rotatablely moving, gear wheel 16 drives the pinion 17 and the output shaft 4 that are engaged with and does counterclockwise motion, the motion of output shaft 4 drives earthed switch and does the separating brake motion, when moving to shown in Fig. 5 b state, pin 67 on the connecting lever 24 drives on the adjustment screw of location recognition 27 tops that little connecting lever 28 withstands on the location recognition plate, when little connecting lever 28 moves clockwise, promoting location recognition plate 27 moves upward, and then location recognition plate 27 drive clutch sleeves 33 move upward, the trundle 31 that clutch sleeve 33 is thrown off on little 37, rotatablely moving of little axle 37 can not be delivered on the worm screw 26, worm screw 26 is no longer rotated, drive plate 19 is by pin and crank 22 restrictions, limit switch switches to the motor outage in the time of therewith, and separating brake is finished.

3, the combined floodgate motion of isolating switch: motor 45 energisings on the right, when motor gear 46 is moved clockwise, crank 22 is that motion is counterclockwise done in the axle center with right worm-wheel shaft 20, when the breach limit contacts with the pin 66 of drive plate 19 on moving to crank 22, the effect that 22 pairs of drive plates of crank 19 are strong, counterclockwise motion along with crank 22, drive drive plate 19 and the driving shaft 18 that connects thereon, gear wheel 16 is done clockwise rotatablely moving, gear wheel 16 drives the pinion 17 and the output shaft 4 that are engaged with and does counterclockwise motion, the motion of output shaft 4 drives isolating switch and does the motion of closing a floodgate, and the while also drives disk 6 and driving wheel 5 is done motion counterclockwise.The cambered surface contact plug 7 of disk 6 deep-slotted chip breakers 69 drives stage clip 10 compressed energy-storages, and driving wheel 5 bumped less than guide rod 9 when the breach because driving wheel 5 is stepped down, isolating switch closed a floodgate motion, so the motion of the combined floodgate of isolating switch motion band spring energy-storage.When moving to shown in Fig. 5 c state, being contained in pin 67 on the crank 22 this moment withstands on little connecting lever 28 on the adjustment screw of below of location recognition plate 27, little connecting lever 28 is done motion clockwise, promoting location recognition plate 27 moves downward, location recognition plate 27 moves downward drive clutch sleeve 33 and moves downward, the trundle 31 that clutch sleeve 33 is thrown off on the worm screw 26, rotatablely moving of little axle 37 can not be delivered on the worm screw 26, worm screw 26 is no longer rotated, drive plate 19 motions are limited by pin 66, limit switch switches to the motor outage in the time of therewith, and combined floodgate is finished.

4, the separating brake motion of isolating switch: motor 45 energisings on the right, when making motor gear 46 do counterclockwise to move, crank 22 is that motion is clockwise done in the axle center with right worm-wheel shaft 20, the effect that 22 pairs of drive plates of crank 19 are strong, make drive plate 19 do anticlockwise rotatablely moving, upwards motion clockwise along with crank 22, drive drive plate 19 and the driving shaft 18 that connects thereon, gear wheel 16 is done counterclockwise rotatablely moving, gear wheel 16 drives the pinion 17 and the output shaft 4 that are engaged with and does clockwise motion, the motion of output shaft drives isolating switch and does the separating brake motion, the motion of output shaft also drives disk 6 simultaneously and driving wheel 5 is done motion clockwise, and this moment, the athletic meeting of driving wheel 5 made guide rod 9 move clockwise along deep-slotted chip breaker 69 cambered surfaces of disk 6.When moving to pin 7, pin 12, output shaft 4 being aligneds, worm gear 23 rotations and then drive output shaft 4 rapid movements that stage clip 10 releases energy and drives the right side, because crank 22 is the U type, the centre has the breach of stepping down, output shaft 4 motion rapid movements can not drive crank 22 and rotate, and then can not drive motor 45 motions yet.When moving to shown in Fig. 5 b state, pin 7 is by 69 constraints of the deep-slotted chip breaker on the disk 6, as shown in Figure 3, pin 67 on the crank 22 drives on the adjustment screw of top that little connecting lever 28 withstands on location recognition plate 27, crank 22 is clockwise during motion and then drive little connecting lever 28 and do motion counterclockwise, promoting location recognition plate 27 moves upward, location recognition plate 27 moves upward and drives clutch sleeve 33 and move upward, the trundle 31 that clutch sleeve 33 is thrown off on little 37, rotatablely moving of little axle 37 can not be delivered on the worm screw 26, worm screw 26 is no longer rotated, disk 6 also no longer rotates, drive plate 19 is by pin 66 and crank 22 restrictions, and limit switch switches to the motor outage in the time of therewith, and separating brake is finished.5, manual operation: the little axle 37 that shakes left side or right side with a crank is done clockwise or motion counterclockwise it, driving corresponding worm screw 26 does clockwise or motion counterclockwise, make connecting lever 24 or crank 22 motions, drive plate is done counterclockwise or motion clockwise thereby drive, after reaching fixed angle of output shaft output,, push clutch sleeve 33 open itself and one of them trundle 31 are thrown off by moving up and down of location recognition plate, reach the disengagement transmission, end the effect of transmission.

Therefore; this three position mechanism; can be when isolating switch closes a floodgate can't the operational grounding switch; can't disconnecting switch operation when earthed switch closes a floodgate; realize the mutual self-locking property of isolating switch and earthed switch, and because spring energy agency, make isolating switch energy-stored spring when closing a floodgate; when separating brake, have opening velocity faster, and then protection switch.And the arrangement of clutch that adopts in this mechanism makes clutch reposefully smoothly when separating brake and combined floodgate to make switch have more performance.

Although more than described preferred embodiment of the present utility model in detail, should be expressly understood that for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. three position mechanism of realizing quick acting switching-off comprises case cover (63) and is positioned at case cover (63) this case cover (63) is divided into header board (3), intermediate plate (2) and the back plate (1) in 3 spaces, it is characterized in that:

In the space between described intermediate plate (2) and the back plate (1), the position, both sides is respectively equipped with motor (45), have motor gear (46) on the output shaft of motor (45) bottom, described motor gear (46) respectively with the little axle (37) at position, both sides on gear (35) be complementary;

Two little axles (37) and two worm screws (26) on the position, both sides are separately fixed between intermediate plate (2) and the header board (3), little rotatablely moving of (37) of axle drives to both sides worm screw (26) separately by the clutch apparatus on the position, both sides respectively, and drive is rotated with the worm gear (23) of the left and right side that both sides worm screw (26) is matched respectively, the worm gear (23) in left side is installed between intermediate plate (2) and the header board (3) with connecting lever (24) is coaxial, and the worm gear on right side (23) is installed between intermediate plate (2) and the header board (3) with crank (22) is coaxial;

Drive plate (19) is installed between intermediate plate (2) and the header board (3) by driving shaft (18), and be positioned on the axis of described three position mechanism, the left side of described drive plate (19) has skewed slot, pin (64) on the described connecting lever (24) moves in described skewed slot, and the right side of described drive plate (19) has a pin (66) and is complementary with the breach of stepping down that described crank (22) has;

Be fixed with a gear wheel (16) on the driving shaft (18) between described drive plate (19) rear, described intermediate plate (2) and the back plate (1), described gear wheel (16) is meshed with a pinion (17), described pinion (17) is installed on the output shaft (4), and the spring energy storage device that releases energy when compressed energy-storage, isolating switch separating brake when between described intermediate plate (2) and described back plate (1) isolating switch being installed also and closing a floodgate.

2. three position mechanism as claimed in claim 1, it is characterized in that: the little axle (37) on the position, described both sides is installed between described intermediate plate (2) and the header board (3) by the clutch base (34) and the positioning seat (36) of both sides respectively, the worm screw of described both sides (26) is installed between intermediate plate (2) and the header board (3) by the bearing pedestal (25) and the middle base (29) of both sides respectively, and described bearing pedestal (25), middle base (29), clutch base (34) and positioning seat (36) are spaced successively from top to bottom.

3. three position mechanism as claimed in claim 2, it is characterized in that: described clutch apparatus comprises clutch sleeve (33), location recognition plate (27), screw rod (68), return spring (30) and little connecting lever (28), wherein said screw rod (68) is connected between described middle base (29) and the described clutch base (34), described return spring (30) is placed in described screw rod (68) outside, described location recognition plate (27) is bending parts, it vertically partly is positioned at described worm screw (26) outside and has two between the upper and lower every the adjustment screw that is provided with, its lateral part is inserted between described middle base (29) and the clutch base (34) and with described clutch sleeve (33) and fixes, described lateral part also supplies screw rod (68) to pass, the top and the bottom of described clutch sleeve (33) have two elongated slots respectively, and be inserted with the pin (31) on the worm screw (26) that is positioned at clutch sleeve (33) top in the described elongated slot respectively and be positioned at pin (31) on little (37) of clutch sleeve (33) below, described little connecting lever (28) is fixed on the described intermediate plate (2), two pins (67) that are provided with at interval on one end and the described worm gear (23) match, and on the other end and the described location recognition plate (27) two match every the adjustment screw of setting between the upper and lower.

4. three position mechanism as claimed in claim 3, it is characterized in that: the lateral part of described location recognition plate (27) has the hole of big breach and big breach both sides, described big breach is inserted in the groove of described clutch sleeve (33) outer surface and with described clutch sleeve (33) and fixes, nylon jacket (32) is housed in the described hole, and passes for screw rod (68) in the described nylon jacket (32).

5. three position mechanism as claimed in claim 4 is characterized in that: an end face of described clutch sleeve (33) is left-handed cam, and another end face is the dextrorotation cam.

6. as each described three position mechanism of claim 1-5, it is characterized in that: described spring energy storage device comprises driving wheel (5), disk (6), guide rod (9), spring base (11), stage clip (10) and two rollers (8,14), wherein said driving wheel (5) and disk (6) are installed on the described output shaft (4), described disk (6) is two, lay respectively at the both sides, front and back of described driving wheel (5), have on the described disk (6) along the deep-slotted chip breaker on its circumferencial direction (69), described two rollers (8,14) link to each other with guide rod (9) with spring base (11) respectively, the roller (8) that links to each other with guide rod (9) is fixed between described intermediate plate (2) and the back plate (1) by pin (7) and this pin (7) is inserted in the deep-slotted chip breaker (69) of disk (6), the described roller (14) that links to each other with spring base (11) is by copper cover for seat (13,15) be fixed between intermediate plate (2) and the back plate (1), stage clip (10) is placed in the described spring base (11) and guide rod (9) outside, and be butted between the two, have the breach that matches with an end of described guide rod (9) on the described driving wheel (5).