CN101714476B - High-voltage isolating switch - Google Patents

Abstract

The invention discloses a high-voltage isolating switch which comprises a limit lock catch part and an interchanging transmission part so as to ensure that in closing and separating operations, the isolating switch acts by two steps, wherein the limit lock catch part is in an off state in one of the two steps of actions and ensures that a post insulator at a main contact side rotates, and a post insulator at a closing contact side does not rotate. In one of the steps: the interchanging transmission part changes the rotations of the post insulator at the main contact side into linear motions so as to ensure that a conducting arm at the main contact side does linear motions facing towards or departing from the closing contact. For the high-voltage isolating switch, in a closing operation, the conducting arm is pushed to move towards the closing contact without pulling a pull rod connected with a spring assembly of the main contact like previous inventions, which effectively reduces a falling bending moment generated in the process of the closing operation, thus the reliability and the safety of the whole high-voltage isolating switch are improved.

Description

High voltage isolator

Technical field

The present invention relates to a kind of twin columns flat-open type high voltage isolator, and relate in particular to a kind of high voltage isolator that reduces the operating physical force in the high voltage isolator closing operation and improve operating reliability.

Background technology

High voltage isolator is to be used for deciliter voltage being arranged and the switchgear of zero load circuit in the electric power system, that is to say, when people's repair apparatus, can utilize high voltage isolator between quilt maintenance equipment and charging equipment, to form obvious visible cut-off point, high voltage isolator can also can bear short-circuit current by running current reliably under closure state, high voltage isolator cooperates the load operation mode that can also change electrical network with high-voltage switch gear in addition.High voltage isolator is the power equipment of consumption maximum in the electric power system, and major part is used out of doors.

High voltage isolator generally includes at least one phase Switch main body and operating mechanism.Its body construction is the double-column horizontal rotary open type, and every phase structure is comprised of base, post insulator, running part and current-carrying part.

Above-mentioned isolating switch is like this action: when closing operation, operating mechanism passes to a lateral brace insulator by transmission component with clockwise moment, this post insulator self turns clockwise and the part of operational torque is passed to the opposite side post insulator of same phase by cross link, so that the both sides conductive arm swings and make contact side and fingertip side to be incorporated into mutually in the middle of two insulators in opposite directions, the rotation of this post insulator also drives girt this operational torque is passed to other two-phase isolating switch successively.Also can at an every operating mechanism and transmission component of being provided with mutually, form the isolating switch of three-phase separate body action.

The operating process that " divides ", operating mechanism passes to the post insulator that connects therewith by the drive link assembly with counterclockwise moment, just its action and the opposite direction that closes.

Along with the improvement of isolation switch contact assembly, the contact between main contact and the involutory contact is increasing, causes the operating physical force of separating brake and combined floodgate to increase to above-mentioned post insulator can't be born.

Through inventor research, this problem comes from following factor, and " divide " " to close " action be to finish in a step during existing twin columns flat-open type isolator operation, if contact pressure increases, then closes, divides an instant impact also to enlarge markedly.

For fear of this problem, in No. the 200720120539.6th, the inventor's formerly utility model patent, a kind of isolating switch body of finishing in two steps " dividing " " closing " action is disclosed.

This isolating switch body comprises main contact lateral brace insulator and the involutory contact lateral brace insulator that is supported on the base, these two post insulators are connected with cross link through spacing trip gear, and the top at main contact side and involutory contact lateral brace insulator is respectively arranged with conductive arm, and main contact and involutory contact are connected on the corresponding conductive arm.And, also being provided with the transposition running part at the top of main contact lateral brace insulator, the drive link of this transposition running part through passing conductive arm is connected with main contact, specifically, is connected with the spring assembly of main contact.When carrying out " closing " action, at first, in the first step, by the power from operating mechanism, main contact lateral brace insulator rotating, and drive involutory contact lateral brace insulator through trip gear and cross link and rotate in opposite directions, after about 90 degree of main contact lateral brace insulator rotating, trip gear is thrown off cross link, thereby enters into second step.

At second step, main contact lateral brace insulator is rotated further, and involutory contact lateral brace insulator no longer rotates.The rotation of main contact lateral brace insulator is transformed into rectilinear motion by the transposition running part, thereby pull back the drive link that is contained in the conductive arm, and pull back spring assembly by drive link, thereby so that the fingertip that is connected on this spring assembly be pressed on the involutory contact.

But, this mode that spurs main contact by the drive link in the conductive arm has an obvious defective, namely, in the process of contactor, post insulator can be subject to the impact of moment of flexure, namely, in second step, when transposition running part pulling drive link, the top of main contact lateral brace insulator is subject to one towards the pulling force of involutory contact direction, thereby, applied one at whole post insulator and toppled over moment of flexure, if serious, this moment of flexure can cause Rupture of Post Insulator, for this reason, must increase the diameter of post insulator, and this brings the problems such as cost rising.In addition, in above-mentioned isolating switch, the work of trip gear is sometimes also unreliable, therefore, still has the demand of improving trip gear.

Summary of the invention

In view of the above problems, the present invention has been proposed, the object of the present invention is to provide a kind of simple in structure, close, minute smooth operation, in deciliter process, can not apply to post insulator the isolating switch of moment of torsion.

In order to realize above-mentioned purpose of the present invention, isolating switch according to the present invention comprises: contact assembly and isolating switch body, contact assembly comprises main contact and involutory contact, this isolating switch body comprises the main contact side component, involutory contact side component and running part, involutory contact side component comprises post insulator, involutory contact is supported on conductive arm on this post insulator, the main contact side component comprises the main contact that engages with involutory contact, post insulator, be connected with the conductive base of main contact and main contact is supported on conductive arm on the post insulator, running part comprises so that the cross link of involutory contact side component and the interlock of main contact side component, the waling stripe of alternate transmission and the vertical links that connects operating mechanism.

Described main contact side component also comprises:

Limit lock catch part and transposition running part, so that in " closing " and " dividing " operation, so that isolating switch moves in two step modes, and described limit lock catch part causes and wherein be in off-state in the step in described two-step action, so that described main contact lateral brace insulator rotating and described involutory contact lateral brace insulator does not rotate; And in another step action, pass through cross link so that the both sides post insulator links,

It is characterized in that in a described wherein step, described transposition running part becomes the rotation of described main contact lateral brace insulator into rectilinear motion so that the conductive arm of described main contact side towards or deviate from described involutory contact Linear-moving.

For high voltage isolator of the present invention, in the operation of " closing " lock, promoting conductive arm moves towards involutory contact, and be not as previous invention, to spur the pull bar that is connected with the spring assembly of main contact, that has reduced so effectively that isolating switch produces in the closing operation process topples over moment of flexure, the reliability and the fail safe that have therefore improved isolating switch integral body.

Description of drawings

By the detailed description of reference accompanying drawing to the preferred embodiment for the present invention, purpose of the present invention, advantage and benefit will be more readily understood, in the accompanying drawing:

Fig. 1 is the perspective view that the phase in the high voltage isolator that the inventor proposes is shown;

Fig. 2 is the cutaway view that schematically shows high voltage isolator shown in Figure 1, wherein only shows each parts of main contact side;

Fig. 3 illustrates the according to the preferred embodiment of the present invention cutaway view of the main contact side component of high voltage isolator, wherein mainly shows the transposition running part that is arranged on the post insulator top;

Fig. 4 is the perspective view that the driver plate among Fig. 3 is shown;

Fig. 5 is the vertical view cutaway drawing that transposition running part shown in Figure 3 is shown;

Fig. 6 is the cutaway view that a kind of modification of transposition running part shown in Figure 3 is shown;

Fig. 7 A is the cutaway view of the first execution mode of the high voltage isolator limit lock catch part that illustrates;

Fig. 7 B shows the vertical view of Fig. 7 A; The schematic diagram of arc gear ring part shown in the figure;

Fig. 8 A and 8B are the schematic diagrames of structure that the snap close piece of the limit lock catch part shown in Fig. 7 A is shown, and illustrate the operation principle of this snap close piece;

Fig. 9 A, 9B show the structural representation of the second execution mode of limit lock catch part;

Fig. 9 C, Fig. 9 D show the scarce wheel of the second execution mode of limit lock catch part and the structural representation of snap close piece, and wherein Fig. 9 D is the profile along the G1-G1 of Fig. 9 A;

Figure 10 A is the schematic diagram of structure that the 3rd execution mode of limit lock catch part is shown to 10D;

Figure 11 A illustrates respectively the cutaway view that transposition running part shown in Figure 5 is in combined floodgate and separating brake service position to Figure 11 B;

Figure 12 A shows the structural representation of the 4th execution mode of limit lock catch part to 12C

Figure 12 D shows the vertical view of the position-limited wheel among the 12A

Figure 12 E and Figure 12 F show structural representation and the operation principle of the snap close piece among Figure 12 A;

Figure 13 A shows structural representation according to the 5th execution mode of limit lock catch part of the present invention to 13D.

Embodiment

Describe in detail with reference to the accompanying drawings according to preferred implementation of the present invention, in institute's drawings attached, the same or analogous element of identical designated, and it should be understood that the present invention is not limited to each execution mode described here, those skilled in the art can make various modifications and variations under instruction of the present invention.

In order to understand better the present invention, at first with reference to attached Fig. 1 and 2 the high voltage isolator that the inventor once proposed is described.

As shown in Figure 1, Fig. 1 illustrates the perspective view of the phase in the high voltage isolator, comprises the post insulator 91,92 and be separately positioned on main contact 5 and involutory contact 50 on post insulator 91 and 92 by means of conductive arm 31 and 32 of operating mechanism 42, main contact and involutory contact side on this phase high voltage isolator.

As shown in Figure 2, when closing a floodgate, operating mechanism (by the actuating force of manpower or motor etc.) rotates the post insulator 91 of main contact side by suitable transmission mechanism clockwise direction, simultaneously, by be connected between post insulator 91 and 92 cross link 40 so that the post insulator 92 of involutory contact side rotate in opposite directions, namely counterclockwise rotate, thereby main contact 5 and involutory contact 50 are close, and along with two post insulators 91 and 92 rotate 90 degree, involutory contact 50 begins to be inserted in the main contact 5, finishes the first step of combined floodgate.

After rotating about 90 degree, trip gear 4 is thrown off, this trip gear 4 comprises the wheel 61 of threading off, be arranged on dropout part 62, back-moving spring 65 on the wheel 61 of threading off, be arranged on buckle 613 below the flange 68 that is fixedly connected with main contact lateral brace insulator 91, be arranged on the dropout gear 64 on the base 46, and dropout part 62 1 ends that are connected on the wheel 61 of threading off by a radially little axle are provided with a buckle 621.Collide to making dropout part 62 and dropout keep off 64 when buckle 613 cooperation buckles 621 make dropout wheel 61 and main contact lateral brace insulator 91 synchronous rotatings, the wheel 61 of then threading off is threaded off and is broken away from flange 68.The rotation of main contact lateral brace insulator 91 will no longer drive cross link 40 motions like this, that is, involutory contact lateral brace insulator 92 no longer rotates.

Along with main contact lateral brace insulator 91 is rotated further, because this moment, main contact has begun and involutory contact, therefore, and main contact and be attached thereto the conductive arm 31 that connects and no longer rotate with post insulator.At this moment, transposition running part 2 begins transposition.

As shown in Figure 2, transposition running part 2 comprises driver plate 56, drive plate 57, connecting plate 66 and drive link 58.Drive plate 57 for example is fixed on the axle 501 that is fixedly connected with post insulator 91 by key, and along with this axle 501 together rotates.Driver plate 56 is enclosed within on the described axle 501 by an oval-shaped slotted hole, and is hinged with the hinge 59 of an eccentric setting on the drive plate 57.One end of driver plate 56 is connected with drive link 58, and this drive link 58 passes conductive arm, and is connected with the spring assembly of contact 5.

When main contact lateral brace insulator was rotated further, conductive arm 31 can not be along with post insulator be rotated further, and at this moment, the rotation of drive plate 57 is transformed into to back pressure pulling driver plate 56 by the bearing pin 59 of eccentric setting, and and then pulling drive link 58.Drive link 58 pulls back spring assembly, so that described spring assembly and the fingertip that is fixedly connected with it are mobile backward along the inclined-plane of conductive base 30, thereby is similar to leverage, and the front end of fingertip compresses involutory contact.

But, discuss as top, pull back in the process of spring assembly at drive link 58, the top of post insulator 91 is subject to a rightabout reaction force, thus, post insulator 91 has been applied one toppled over moment of flexure.

Preferred implementation of the present invention

In order to address this problem, the inventor improves isolating switch body of the prior art.

High voltage isolator comprises main contact side component and involutory contact side component according to the preferred embodiment of the present invention, and wherein because the structure of involutory contact side component and above-mentioned involutory contact side component is similar, therefore, the below only describes the structure of main contact side component.

The main contact side component mainly comprises running part (waling stripe, cross link etc.), post insulator part, transposition running part and limit lock catch part, because identical in the isolating switch of running part and post insulator part and above-mentioned prior art, therefore omit description of them, the below describes transposition running part and the limit lock catch part as main points of the present invention in detail.

The transposition running part:

Be similar to high voltage isolator of the prior art, comprise main contact 5, the first conductive arm 31 that main contact 5 is connected with the first post insulator 91, be arranged on the transposition running part 1 at post insulator 91 tops and the terminal block 7 that is electrically connected with external equipment according to the main contact side component of high voltage isolator of the present invention.

As shown in Figure 3, transposition running part 1 comprises upper shell 11 and the lower casing 12 that fastens to together, is arranged on rotationally upper flange axle 10 in lower casing 11 and 12, fixes in order to the driving wheel that rotates 22, be fastened on the driver plate 26 on described driving wheel 20 excircles and be fixed on locating wheel 24 on the upper flange axle 10 movably with described upper flange axle 10.

Described driving wheel 22 is an eccentric wheel, and in order to reduce the friction between the driver plate 26 on driving wheel and its periphery, is provided with bearing 221 at these eccentric driving wheel 22 excircles, so that driving wheel 22 can rotate with respect to driver plate 26.But be appreciated that this bearing 221 is not to be necessary, also can omit this bearing 221.

As shown in Figure 4, driver plate 26 comprises the main body 263 that is roughly concave frame, be formed in the middle of the main body 263 slotted holes 264 in case upper flange axle 10 therefrom pass and be arranged on concave frame main body 263 two pillar sides guide rod 261 and support 262, wherein fasten to a time-out at upper and lower shell 11 and 12, guide rod 261 is slidably disposed in the guide groove 29 of upper and lower shell 11 and 12 (referring to Fig. 7), if required, liner can be set to reduce friction between the two.Supporting 262 is used for also and then with the conductive base 52 of main contact 5 being connected with conductive arm 31.

Described upper flange axle 10 is formed by an axle that is connected with flange.Can certainly adopt bolt to connect.

As shown in Figure 5, be wholely set conducting bridge 3 on the first conductive arm 31, this conductive arm 31 is by the guide hole 112 between the described upper lower casing 11 and 12, so that driver plate 26 and conducting bridge 3, conductive arm 31 move left and right in the axial direction.Conducting bridge 3 is provided with conductive strips 37, in order to be electrically connected with terminal block 7 by shell 11.

Shown in Fig. 3 and 4, the pull bar 25 that is connected with the spring assembly of main contact 5 is connected with shell by pin plate 36, and thus, in " dividing ", " closing " process, pull bar 25 is fixed with respect to shell.And for so that driver plate 26 can move, the support 262 of driver plate 26 is divided into up and down two half-unit, and is provided with betwixt slit 264, so that pin 36 passes from this slit 264.

As shown in Figure 5, between locating wheel 24 and shell 11,12, be provided with transposition clutch 27, this transposition clutch 27 comprises telescopic inserted link 271 and the spring 272 that is enclosed within on this inserted link 271, inserted link 271 1 ends are hinged by hinge and locating wheel 24, and the other end is flexibly connected by shaft coupling piece 274 and the support 273 that is arranged on the shell.This transposition clutch 27 act as minute, closing position produces an elastic resistance, remains on minute, closes state, the resistance when reducing to operate simultaneously so that the transposition running part can be stablized.

In addition, as shown in Figure 6, Fig. 6 shows a modification of transposition running part 1.In transposition running part 1 shown in Figure 6, eccentric driving wheel 22 is substituted by a cam 23.

And, as shown in Figure 6, show a kind of modification of transposition clutch 27.Inserted link 271 and spring 272 have wherein been cancelled, replace formation location notch hole, corresponding position on locating wheel 24, and the corresponding position arranges Flexible element 21 on shell, this Flexible element 21 comprises bearing 211, be arranged on ball 231 in bearing 211 holes and the spring 233 of capable of regulating pressure, so that with ball 231 bias voltage outside bearing 232.Thereby in locating wheel 24 rotation processes, when the aligned in position of the position in the location notch of locating wheel 24 hole and Flexible element 23, biasing force by means of spring 233, ball drops in the location notch hole, thereby so that the transposition running part has the resistance that keeps stable at separating brake or "on" position, and realize the divide-shut brake location.

Be similar in the such scheme, the first conductive arm 31 is connected with conductive base 52 holding electricals of main contact 5.Conductive arm 31 is arranged in the guide hole 112 that arranges between the lower casing, so that driver plate and conductive arm 31 move left and right in the axial direction.

In addition, in the first conductive arm 31, between conductive base 52 and pull bar 25, be provided with balancing spring 38, this balancing spring 38 is bias voltage conductive base 52 in advance, make conductive arm 31 be subject in advance one with the reverse elastic force of touch spring balancing out the elastic resistance of touch spring, thereby in the transposition action of closing a floodgate, greatly reduce operating physical force.This modification is compared the advantage that has with such scheme: owing to omitted the capacity eccentric bearing structure, and can be so that whole transposition running part stability when the divide-shut brake position improves.

Be appreciated that described driving wheel might not be designed to cam face.

Alternate running part:

As shown in figure 10, flange 83 is provided with external gear in its periphery, and this external gear is meshed with gear ring 81, and wherein gear ring 81 is arranged on the base 41 rotationally, and is connected by transmission mechanism with operating mechanism 42, in order to rotate by operating mechanism.Shown in Figure 10 B, 10C, 10D, gear ring 81 is arc gear ring, passes to post insulator 91 thereby will be transformed into 180 degree by 90 subtended angles of spending from the moment of operating mechanism 42.Simultaneously, this gear ring 81 is connected with other mutually by girt 48, so that heterogeneous synchronization action.

Limit lock catch part

To join in order being harmonious with the pull bar kind of drive in the present embodiment, to have adopted arc gear ring to carry out alternate transmission.Its girt is connected with arc gear ring, and cross link is connected with position-limited wheel.

Limit lock catch part is arranged on the downside of post insulator 91, comprise flange shaft 80, be fixed on the first lower flange 83 that also receives on the flange shaft 80 from the power of operating mechanism 42, be arranged on rotationally on the described flange shaft 80 and the position-limited wheel 8 hinged with described cross link 40, and being arranged on latch components between described the first lower flange 83 and the described position-limited wheel 8, described latch components can interconnect described the first lower flange 83 so that switch between the blocking that they rotate and the disengaged position that described the first lower flange 83 and described position-limited wheel 8 are thrown off with described position-limited wheel 8.At the blocking of latch components, be delivered to involutory contact side component from the power of operating mechanism 42 by position-limited wheel 8, so that the second post insulator 92 and the first post insulator 91 rotate simultaneously.And when latch components is thrown off, so that the rotation of the first post insulator 91 can not be passed to the second post insulator 92, so that the latter no longer together rotates with main contact lateral brace insulator 91.

[the first execution mode of limit lock catch part]

Shown in Fig. 7 A, Fig. 7 A illustrates the first execution mode of described limit lock catch part.Downside at main contact lateral brace insulator 91 is provided with a flange shaft 80 that is connected with axle 801 one, and this flange shaft 80 for example is bolted with the lower end of post insulator 91.Be fixedly installed the first lower flange 83 in this flange shaft 80, and, at the downside of the first lower flange 83, on axle 801, for example by bearing position-limited wheel 8 is set rotationally.Between position-limited wheel 8 and the first lower flange 83, be provided with latch components 84.

Shown in Fig. 8 A and 8B, this latch components 84 comprises: locking bar 842, touching lever 841, be arranged between locking bar 842 and the touching lever 841 in order to the side-to-side movement of touching lever 841 is transformed into the fanning strip that moves up and down 844 of locking bar 842 and with the spring of locking bar 842 towards the direction bias voltage of locking position-limited wheel 8.

Shown in Fig. 8 A, snap close piece 84 is fixed under the position-limited wheel 8, and along with position-limited wheel 8 rotates.When the touching lever 841 of latch components 84 when being arranged on postive stop baffle 45 on the base 41 and meeting, touching lever 841 is inwardly pressed, thereby inwardly promotes fanning strip 844, makes it to rotate along clockwise direction.The pulling locking bar 842 that clockwise rotates of this fanning strip 844 moves down, and locking bar 842 is from the lockhole 843 interior disengagings of the first lower flange 83, so that position-limited wheel 8 and the first lower flange 83 are thrown off.

Shown in Fig. 8 B, when touching lever 841 leaves baffle plate 45, under the effect of spring, locking bar 842 pops up, and when the first lower flange 83 turned to lockhole 843 and aims at locking bar, locking bar 841 was inserted in the lockhole 843, thereby rotated with the first lower flange 83 so that position-limited wheel 8 is locked.

[the second execution mode of limit lock catch part]

To shown in the 9D, Fig. 9 A illustrates the second execution mode of limit lock catch part to 9D such as Fig. 9 A.Wherein latch components comprises position-limited wheel 8, snap close piece 86 and lacks wheel 87 and spacing pin 45.Below position-limited wheel 8, be fixed with one at axle 801 and lack wheel 87, be fixed on and be provided with a snap close piece 86 below the position-limited wheel 8, this snap close piece comprise second the pin only take turns 861, be fixed on the little axle 863 below the position-limited wheel, be enclosed within the deflection spring on this little axle and the stop block 862 of only taking turns 861 scopes of activities in order to limit the second pin is set with one heart, described the second pin is only taken turns 861 and is provided with at its edge and lacks the radially breach of coupling of wheel 87, only take turns 861 wheel rims at this second pin and radially protrude a catch arm, in order to realize the release action with spacing pin 45, described scarce wheel 87 has in the snap close position with pin and only takes turns 861 breach that radially are complementary 871; Shown in Fig. 9 C, 9D, also be provided with a pit 933 in the breach 871 of described scarce wheel 87.When lacking wheel 87 and go to the snap close position, pin is only taken turns 861 rotations and is inserted and lack wheel 87 with its pinning.In the release action, when the forearm that ends wheel when pin is promoted to turn over a little angle by pin 45, the pit 933 that the summit 905 that pin is only taken turns 861 breach is lacked the breach 871 interior settings of wheel 87 drives, and so that pin only takes turns 861 further rotates from the breach 871 that lacks wheel 87 and throw off.The spacing pin 45 of described interoperation is fixed on the bearing pedestal 46.

[the 3rd execution mode of limit lock catch part]

To Figure 10 D, Figure 10 A illustrates the 3rd execution mode of limit lock catch part to Figure 10 D with reference to Figure 10 A.

Shown in Figure 10 B, latch components is combined in the described alternate transmission mechanism, specifically, latch components is included in the power transmission tooth 922 that position-limited wheel 8 edges arrange, at the pin 921 of opposite side setting and the power transmission tooth 823 that is provided with at the reinforcement of arc gear ring 81, in order to match power transmission with the tooth 922 that arranges on the position-limited wheel 8.And at position-limited wheel 8 downsides, be fixed on flange shaft 80 and be provided with driving lever 88, when post insulator is rotated to "on" position by gate-dividing state, when arc gear 81 turns clockwise with gear 83 transmission, also the engagement by power transmission tooth 823 and tooth 922 drives position-limited wheel 8 and clockwise rotates, when going to Figure 10 C position, power transmission tooth 922 and 823 breaks away from mutually, and position-limited wheel 8 is stopped operating.And arc gear ring 81 is rotated further and makes isolating switch to closing position, referring to Figure 10 D.When separating brake, when post insulator 91 rotates to Figure 10 C position counterclockwise, described driving lever 88 cooperates with pin 921 position-limited wheel 8 driven and rotates counterclockwise, make power transmission tooth 922 and 823 engagements, position-limited wheel 8 is driven by arc gear ring 81 and continues to rotate counterclockwise until open position, and by 47 stop of separating brake pin, see Figure 10 B.

Operation principle

Below, with reference to accompanying drawing 3, Figure 11 A and 11B, the according to the preferred embodiment of the present invention operating principle of isolating switch is described.It is to be noted, only be described as the basis with one of them execution mode here, but should be appreciated that the content of this part description is applicable to any execution mode and their combination.

When the isolating switch gate-dividing state, when operating mechanism 42 is received the order of closing a floodgate when sending closing operation moment, this closing operation moment can be directly passed to the first lower flange 83 and post insulator 91 by transmission mechanism, and the first lower flange 83 drives arc gear ring 81 and rotates, in order to carry out alternate transmission.In addition, also can at first be delivered to arc gear ring 81 by linkage etc., then, give the first lower flange 83 by arc gear ring 81 with the closing operation transmission of torque, and drive the first post insulator 91 and rotate, so that the first conductive arm 31 is together to counterclockwise swinging, simultaneously, because snap close piece 84 is in the snap close state, position-limited wheel 8 also rotates thereupon, and by cross link 40, so that the second post insulator 92 rotates simultaneously, cause involutory contact 50 to swing to the direction that is harmonious, when post insulator forwards near 90 ° of positions, main contact 5 and involutory contact 50 are incorporated into, at this moment, latch components 84 is in disengaged position, for the first execution mode of limit lock catch part, postive stop baffle 45 bump touching levers 841, locking bar 842 moved downward and leave lockhole 843, make position-limited wheel 8 break away from the first lower flange 83, and and then no longer together rotate with the first lower flange 83 and stop upper in this, thereby the second post insulator 92 is also stopped operating and by corresponding spacing non-magnetic shim 49 stop, as shown in Figure 1.

At this moment, the first post insulator 91 is rotated further, namely, upper flange axle 10 is rotated further, when the first conductive arm 31 and main contact 5 are subject to involutory contact 50 resistance, the rotating torque of upper flange axle 10 overcome in the spacing clutch 27 spring-force driven dual and so that a reset is left in the transposition clutch 27 of transposition in the running part 1, shown in Figure 11 A, Figure 11 B.Driving wheel 22 rotates with respect to driver plate 26 in this case, because driving wheel 22 is fixed on the upper flange axle 10 for off-centre, therefore, the rotation of driving wheel 22 is transformed into travelling forward of driver plate 26, thereby promote the conductive base 52 of main contact 5 towards involutory contact by conductive arm 31 beginnings, so that main contact and involutory contact compress, be rotated further to transposition clutch 74 to the position set, shown in Figure 11 A.Locating wheel 24 limited gear 28 stop, at this moment, main contact and involutory contact engage fully, and closing operation is finished.

In this simultaneously, gear ring 81 cooperates with the outer gear of the first lower flange 83, the part of the closing moment of isolating switch operating mechanism is passed to other two-phase by girt 48, so that each synchronised is worked.

When isolating switch is in closing position and carries out sub-switching operation, operating mechanism sends sub-switching operation power, make counterclockwise rotation of post insulator 91, this moment is because position-limited wheel 8 and 83 disengagings of the first lower flange, post insulator 92 is not subjected to torsional moment, the running part that replaces simultaneously also is subject to the spring restoring force of contact, and by driving wheel 22 so that be subject to a counterclockwise moment at upper flange axle 10, it is motionless that its conductive arm 31 can remain on original position, its transposition clutch also by " 1 " to " 0 " position swings, the main contact 5 that compress this moment, involutory contact 50 will unclamp gradually, when going to 90 when spending, the transposition clutch exists " 0 " position, locating wheel 24 limited gear 28 reverse stop, conductive arm 31 and post insulator 91 be counter-clockwise swing together, at this moment, because lower flange axle 80 goes near 90 ° of positions, latch components is in blocking, the first execution mode for limit lock catch part, locking bar 842 inserts in the lockholes 843, and position-limited wheel 8 and flange shaft 80 are together rotated, and drive post insulator 92 and conductive arm 32 swing clockwise, make isolated switch main contact 5, involutory contact 50 separates, and the both sides post insulator is rotated further to limited pin 47 spacing.

[the 4th execution mode of limit lock catch part]

In the execution mode of above-mentioned limit lock catch part, still there are some parts that have much room for improvement.That is: because the spring 272 in the transposition clutch 27 is being the mode of map function moment from being incorporated in advance the closing operation on the one hand, the reverse operating resistance that produces in the time of touch spring 53 can being out of shape on the other hand balances out a part by the elastic force of spring 272.In order to alleviate closing operation power, make operation lighter, can select the larger spring of balance contact elastic force that is used for, but cause so sometimes sub-switching operation not reset.This is because in sub-switching operation, when post insulator begins to rotate counterclockwise, touch spring by conductive arm 31, by thrust plate 26 act on 22 1 opposite shell 11 of driving wheel, 12 counterclockwise torque makes spring 272 transposition actions, but because spring 272 is larger, above-mentioned counterclockwise torque deficiency is so that spring 272 produces the transposition action, therefore make conductive arm can not reset and finish sub-switching operation, thus the reliability when having reduced equipment operating.

Reliability for the operation that guarantees isolating switch adopts following execution mode, to Figure 12 F, comprises a snap close piece 90 such as Figure 12 A in latch components, and this snap close piece 90 is fixedly installed on (snap close piece 90 large sections are shown in broken lines) on the base.Wherein, Figure 12 A illustrates the overview of limit lock catch part; Figure 12 B illustrates the vertical view of gate-dividing state lower limit lock catch part; Figure 12 C is illustrated in the vertical view of "on" position lower limit lock catch part; Figure 12 E illustrates snap close piece 90 and is shown in an open position; And Figure 12 F illustrates snap close piece 90 and is in locked position of coupler.

Below position-limited wheel 8, be fixed with one and lack the combining structure view that wheel 93, Figure 12 D illustrates scarce wheel 93 and position-limited wheel 8.

And being fixed with thumb wheel 98 at lower flange 80 axostylus axostyles 801, the predetermined angular place, edge of described thumb wheel 98 is provided with driving lever 982 and driving lever 88 respectively protrudingly.

Such as Figure 12 A to shown in the 12F, its running part adopts girt to cooperate the alternate kind of drive of arc gear ring, be fixed with gear 83 and cooperate transmission with arc gear ring below flange shaft 80, the position-limited wheel 8 that rotatably is located on the flange shaft 801 cooperates transmission by the thickening tooth 823 of its driving cog 922 below arc gear ring.

Shown in Figure 12 E and 12F, snap close piece 90 comprises a shell 900 that is fixed on the base 46, be arranged on one heart the little axle 904 in the shell 900, be provided with rotationally one first pin at this little axle 904 and only take turns 902, and be enclosed within on the little axle 904 make first the pin only take turns 902 deflections spring, this deflection spring drives this first pin along clockwise direction and only takes turns 902, described the first pin only take turns 902 its with lack wheel 93 aspects that cooperate and be provided with scarce and take turns the breach 903 that radius is complementary, this breach 903 has two summits 905, at forearm 901 of described and scarce wheel interactional aspect bottom radial protrusion.And, on snap close piece 90 shells 900, be provided with breach, so that the restriction pin is only taken turns 902 slewing area, shown in Figure 12 D.Described scarce wheel 93 is drawn with dotted line, be fixed on position-limited wheel 8 below, and be provided with one at predetermined angular and only take turns the semicircle arcuation breach 932 that 902 radiuses are complementary with pin, be used for only taking turns 902 with pin and cooperate.Described driving lever 982 is used for stirring the forearm 901 of snap close piece so that snap close piece 90 releases.And, shown in Figure 12 D, also being provided with a pit 933 in the breach 932 of described scarce wheel 93, the effect of this pit will be described below.Lack wheel 93 and also can not form a complete disc-shape, but consisted of by first paragraph and second segment, wherein first paragraph is the edge of about corresponding 90 central angles, and second segment comprises breach 932, then first paragraph and second segment for example are wholely set on described position-limited wheel 8 with one heart by welding, thereby realize identical effect.

Also be provided with the spacing pin 47 of separating brake on the bearing pedestal 46.

Described scarce wheel 93 also is provided with a pin 931 in its lower section, pin 88 can be used at the second step of separating brake promoting lacking below the wheel 93 pin 931 so that power transmission tooth 922 be meshed with tooth piece 823, until spacing by the spacing pin of separating brake 47.

Its operating principle is described below, when carrying out feed motion, shown in Figure 12 B, arc gear 81, gear 83, thumb wheel 98 rotates, thickening tooth 823 below the arc gear 81 cooperates drive position-limited wheel 8 to clockwise rotate with the power transmission tooth 922 of position-limited wheel 8, conductive arm 31,32 also swing simultaneously thereupon in opposite directions, make contact 5,50 are incorporated into when putting near pre-co-bit, power transmission tooth 922 leaves thickening tooth 823, oneself turns over snap close piece 90 driving lever 982, at this moment lack wheel 93 and lack the 932 snap close positions over against snap close piece 90, make the first pin of snap close piece 90 only take turns 902 and under the driving of torsion spring, insert counterclockwise in the breach 932.Post insulator 91 continues to clockwise rotate, at this moment position-limited wheel 8 oneself stop and being stopped on the base by snap close piece 90, shown in Figure 12 C, and the transmission mechanism 1 that replaces this moment is also finished the transposition action, post insulator 92 stops swinging by spacing stop 49, the rotation of post insulator 91 only makes conductive arm 31 move linearly to involutory contact side by transposition transmission mechanism 1, contact 5,50 is finished compressed action, and feed motion is finished.

Shown in Figure 12 C top plan view, when carrying out the separating brake action, post insulator 91 rotates counterclockwise, gear 83, arc gear 81 also counterclockwise rotates thereupon, at this moment be locked in base because lacking wheel 93 by snap close piece 90, therefore offside post insulator 92 oneself be stopped, the rotation of post insulator 91 only makes transposition spring 272 compressions of transposition transmission mechanism 1 and produces the transposition action, make conductive arm 31 linear movement of (leaving involutory contact) to the right and unclamp contact 5, (turn over 90 ° and finish transposition) is fixed on the forearm 901 that driving lever 982 on the thumb wheel 98 on the lower flange axle at first promotes snap close piece 90 and turns over a little angle when going to pre-minute position, the pit 933 that the summit 905 that the first pin is only taken turns 902 breach 903 is lacked the breach 932 interior settings of wheel 93 drives, and so that the first pin only takes turns 902 further rotates and throw off from the breach 932 that lacks wheel 93.Subsequently, the driving lever 88 of thumb wheel 98 touches mutually with the pin 931 that lacks on the wheel 93, promote to lack wheel 93, and and then promote position-limited wheel 8 and rotate counterclockwise, make power transmission tooth 922 cooperate drive position-limited wheel 8 to rotate counterclockwise with thickening tooth 823, the transmission mechanism 1 transposition action that replaces simultaneously together swings conductive arm 31 and post insulator 91, offside post insulator 92 begins to rotate simultaneously, conductive arm 31,32 swings mutually privately, until driving lever 88, pin 931 are arranged on pin 47 stop on the base 46, the separating brake action is finished.This shows, be with untie-sell only to take turns 902 by utilizing the pit 933 in the breach 932 that lacks wheel 93, can in release action, make pin end wheel and just can free snap close piece turning over a less angle, and make the process of opening more level and smooth, resistance is less, in other words: make pin only take turns 902 easier being opened in the release action.

[the 5th execution mode of limit lock catch part]

Adopt in the isolating switch of the kind of drive of non-pull bar in alternate transmission, or in the isolating switch of three-phase separate body action, the increasing spring force measure of adopting in order to alleviate closing operation power can produce not reset issues of separating brake equally, in order to solve above-mentioned same problem, such as Figure 13 A to shown in the 13D, except the first snap close piece 90 that is provided with at base 46, latch components also is included in the second snap close piece 86 that arranges on the position-limited wheel 8, and below position-limited wheel 8, also be fixed with first and lack wheel 93, being fixed with second in flange shaft 80 lacks dotted portion among wheel 99, the figure and has shown said structure parts below the spacing flange.

Shown in Figure 13 D, described first to lack wheel 93 marginal belts jagged 932, cooperates therewith snap close piece 90 to be provided with the first pin and only take turns 902.The breach 932 that lacks wheel 93 is only taken turns 902 external diameters with the first pin and is radially mated, and pin is only taken turns 902 breach 903 and also lacked wheel 93 external diameters and radially mate with first, and described first lacks and also be provided with pin 931 below taking turns.And described first lacks in the breach 932 of wheel 93 and also is provided with pit 933, in order to combine with summit 905 that the first pin is only taken turns 902 breach 903.Described second lacks wheel 99 and snap close piece 86 interoperations, second lacks wheel 99 edges one side is provided with driving lever 992, opposite side is provided with an arc chute 993, this arc chute 993 is corresponding to the central angle of about 90 degree, the first pin 931 that lacks wheel 93 is inserted in this arc chute 993, and can slide along this chute 993.Be similar to first and lack in the breach 991 that wheel 93, the second lacks wheel 99 and also be provided with pit 933, in releasing process, this pit 933 will engage with the summit 905 that the second pin of the second snap close piece 86 is only taken turns 861 breach 862.

Described scarce wheel 93 can need not to be a whole disc structure, but can for example comprise independent first paragraph and second segment, described first paragraph comprises the edge of corresponding about 90 degree central angles, and described second segment comprises breach, and with described first paragraph and second segment one with one heart, for example by welding, be arranged on the described position-limited wheel 8, thereby realize identical effect.

On base 46, also be provided with pin 45 and spacing pin 47.

The described first breach 932 that lacks wheel 93 and the pin of snap close piece 90 are only taken turns 902 and are cooperated position-limited wheel 8 is locked on the base 46, its in return action (first step of separating brake is finished) by the second driving lever 992 releases that lack on the wheel, that is to say, in the present embodiment, the second driving lever 992 that lacks wheel 99 plays the effect of the driving lever 982 in the 4th execution mode simultaneously.

In the first step of closing a floodgate, this snap close piece 86 and second lacks wheel 99 and cooperates position-limited wheel 8 and flange shaft 801 are locked in together, and finishes release by pin 45 and move.

Its operation principle is described below, namely, the limit lock catch part of the alternate kind of drive of non-pull bar return the principle that resets, the alternate kind of drive that Figure 13 A is moving according to the three-phase separate gymnastics, every phase operating mechanism directly is connected with flange shaft 801 by a vertical links 641, before closing operation, at first second of the second snap close piece 86 the pin is only taken turns 861 and is filled into second and lacks in the breach 991 of wheel 99, thereby position-limited wheel 8 is locked on the flange shaft 801, operating mechanism clockwise rotates post insulator 91, lacking wheel 99 drive position-limited wheels 8 by second clockwise rotates, when turning near 90 °, fashionable to main contact and involutory contactor, the forearm of the second snap close piece 86 is stirred a little angle by pin 45, the second pin that drives the second snap close piece 86 by the second pit 933 that lacks wheel 99 is only taken turns the summit 905 of 861 breach 862, thereby impel the second snap close piece 86 to free, on the other hand, at this moment, the first breach 932 that lacks wheel 93 also goes to the correspondence position of the first snap close piece 90, thereby the first pin that makes snap close piece 90 is only taken turns 902 and is inserted and lack wheel 93 and be locked, it is motionless that position-limited wheel 8 is locked on the base 46, this moment is in involutory contact side, involutory side non-magnetic shim 49 is with involutory contact lateral brace insulator 92 stop (seeing Fig. 1), thus as mentioned above, make the 1 transposition action of transposition transmission mechanism, be rotated further post insulator 91 and only make main contact 5 produce the compression action, to closing position.

During the separating brake action, be similar in the 4th execution mode, because oneself is locked in snap close piece 90 position-limited wheel 8 on the bearing base 46, post insulator 91 rotates counterclockwise the transposition brake spring is swung, and make conductive arm linear movement to the right, be fixed on second on the flange shaft 801 and lack wheel 99 and simultaneously in the counterclockwise direction rotation of post insulator 91, main contact unclamps gradually, transposition transmission mechanism 1 transposition action when going to about 90 °, conductive arm 31 stops linear movement, the first snap close piece 90 of limit lock catch part is pushed open by the second driving lever 992 that lacks wheel 99 simultaneously, the i.e. forearm of the first snap close piece 90 low-angle that is open, simultaneously, the first pit 933 that lacks wheel 93 is only taken turns the summit 905 of 902 breach 903 with untie-sell, impel first to lack wheel 93 disengagings, at this moment, because second lacks the rotation of wheel 99, the second chute 993 that lacks wheel rotates about 90 degree in the counterclockwise direction from the state shown in Figure 13 B, thereby the pin 931 of the other end of chute 993 below being fixed on the first scarce wheel 93 contacts, and promotion pin 931, and then promote first and lack wheel 93, because first lacks wheel 93 and described position-limited wheel 8 fixed engagement, therefore, position-limited wheel 8 is delivered to makes snap close piece 86 and second lack the sealed positions of wheel 99, the second pin is only taken turns 861 and is clockwise rotated the breach 991 of inserting scarce wheel 99, position-limited wheel 8 and flange shaft 801 are locked in together, rotate privately thereby make post insulator 91 drive position-limited wheel 8 locking phases, the both sides contact separates gradually, and pin 931 limited pins 47 are stopped at open position during to 180 °.

This shows, in the starting stage of sub-switching operation (first step), because snap close piece 90 pins the snap close wheel, and further stop the rotation of position-limited wheel 8, thereby, can guarantee that after conductive arm 31 resets fully the post insulator 92 of involutory contact side begins to rotate.

In addition, be not only applicable to the queen post high voltage isolator according to the isolating switch of preferred implementation of the present invention, its transposition transmission mechanism scheme also can be applicable in the three post horizontally openable formula high voltage isolators through appropriate combination.

According to isolating switch of the present invention, because in " closing " lock process, conductive arm is pushed forward, and the pull bar that is connected with the spring assembly of main contact 5 is no longer mobile, therefore, can avoid applying moment of flexure at main contact lateral brace insulator.

In addition, by isolating switch according to the present invention, the dropout some work is more reliable, and can adapt to various abominable operational environments.

Certainly, the 5th execution mode of above-mentioned limit lock catch part can be applicable to adopt in the isolating switch of rotary type such as alternate transmission side such as bevel gear transmission or Worm Wheel System or rack-driving or chain drive etc.

Although above description also illustrates according to the preferred embodiment of the present invention high voltage isolator, but it will be recognized by those of skill in the art that the present invention and be in no way limited to execution mode described here, but in the appended claims restricted portion, can make various modification and improvement at these execution modes, and above-described each execution mode can mutually combine and consists of new execution mode.

Claims (22)

1. high voltage isolator, comprise contact assembly and isolating switch body, contact assembly comprises main contact (5) and involutory contact (50), this isolating switch body comprises the main contact side component, involutory contact side component and running part, involutory contact side component comprises the second post insulator (92), involutory contact (50) is supported on the second conductive arm (32) on this second post insulator (92), the main contact side component comprises the first post insulator (91), be connected with the conductive base (52) of main contact (5) and main contact (5) is supported on the first conductive arm (31) on the first post insulator (91), running part comprises so that involutory contact side component and the cross link (40) of main contact side component interlock and the waling stripe (48) of alternate interlock

Described main contact side component also comprises:

Limit lock catch part and transposition running part, so that in " combined floodgate " and " separating brake " operation, so that isolating switch carries out with two-step action, and the wherein step that described limit lock catch part is formed in the described two-step action is in off-state, described the second post insulator does not rotate so that described the first post insulator rotates, and makes described the first and second post insulators (91,92) interlock in another step of its described two-step action;

Wherein, described transposition running part comprises: the driving wheel (22) that together rotates with described the first post insulator (91), be engaged on driving wheel (22) periphery and the driver plate (26) that is connected with described conductive arm (31), the shell (11 that holds described driving wheel (22) and driver plate (26), 12) and the pull bar (25) that is connected with described shell of an end, described driver plate (26) is fixedly connected with described conductive arm (31), so that the rotation of described driving wheel (22) becomes the rectilinear motion of described driver plate (26) and conductive arm (31), described pull bar (25) other end is connected with the spring assembly (53) of main contact (5);

Described limit lock catch part comprises the flange shaft (80) that is arranged at described the first post insulator (91) downside, it is upper and receive the first lower flange (83) from the power of operating mechanism (42) to be fixed on flange shaft (80), be arranged on rotationally the upper and position-limited wheel (8) hinged with described cross link (40) of described flange shaft (80), and be arranged on latch components (84) between described the first lower flange (83) and the described position-limited wheel (8), described latch components (84) can described the first lower flange (83) and described position-limited wheel (8) are interconnected so that one of rise the blocking that rotates and will described the first lower flange (83) and the disengaged position of described position-limited wheel (8) disengagement between switch

It is characterized in that in a described wherein step, described transposition running part becomes the rotation of described the first post insulator (91) into rectilinear motion so that described the first conductive arm (31) towards or deviate from described involutory contact Linear-moving.

2. high voltage isolator as claimed in claim 1 is characterized in that, described driving wheel (22) is eccentric disc.

3. high voltage isolator as claimed in claim 2 is characterized in that, described driving wheel (22) periphery is overlapped a bearing, to reduce frictional resistance.

4. high voltage isolator as claimed in claim 1 is characterized in that, described driving wheel (22) is cam.

5. high voltage isolator as claimed in claim 1, it is characterized in that, described shell (11,12) comprises upper shell (11) and the lower casing (12) that fits together, described upper and lower shell (11,12) is when fitting together, the guide hole (112) that is formed for guiding the guide groove (29) of described driver plate (26) and guides described the first conductive arm.

6. high voltage isolator as claimed in claim 5, it is characterized in that, described driver plate (26) comprises the main body (263) that is roughly concave frame, be formed on the middle slotted hole (264) of main body (263) so that the first upper flange axle (10) therefrom passes, and the guide rod (261) and the support (262) that are arranged on two pillar sides of concave frame main body (263), wherein, described guide rod (261) is slidably disposed in the described guide groove (29), and described support (262) is used for being connected with the first conductive arm (31).

7. high voltage isolator as claimed in claim 6, it is characterized in that, described the first conductive arm (31) has been wholely set conducting bridge (3), this first conductive arm (31) passes described guide hole (112) slidably, described conducting bridge (3) is provided with conductive strips (37), by shell in order to consist of electric loop with terminal block (7).

8. high voltage isolator as claimed in claim 1, it is characterized in that, also comprise balancing spring (38), this balancing spring is arranged between the conductive base (52) and pull bar (25) of described main contact (5), so as on the combined floodgate direction opposite shell (11,12) bias voltage conductive bases (52).

9. high voltage isolator as claimed in claim 1 is characterized in that, described transposition running part also comprises position-limit mechanism, in order in " dividing " or " closing " operation described driving wheel is held in a predetermined position.

10. high voltage isolator as claimed in claim 9, it is characterized in that, described position-limit mechanism comprises and the coaxial mounted locating wheel of described driving wheel (22) (24), and being hinged on transposition clutch (27) between described locating wheel and the described shell (11,12), described transposition clutch (27) comprises telescopic inserted link (271) and is enclosed within described inserted link (271) upper described inserted link is remained on the spring (272) of extended state.

11. high voltage isolator as claimed in claim 9, it is characterized in that, described position-limit mechanism comprises and the coaxial mounted locating wheel of described driving wheel (24), and be arranged on transposition clutch (27) in the described shell (11,12), described transposition clutch (27) comprises the Flexible element (23) of built-in spring and ball, described spring with described ball to described locating wheel (24) bias voltage, so that fall into the location notch hole that described locating wheel (24) periphery forms at the described ball in described precalculated position.

12. high voltage isolator as claimed in claim 1, it is characterized in that, described transposition running part also comprises arc gear ring (81), described arc gear ring (81) is hinged with described waling stripe (48) and is meshed with the gear teeth of the first lower flange (83) periphery formation, described the first lower flange (83) is fixing with respect to described the first post insulator (91), so that first post insulator (91) of the main contact side component between the homophase does not rotate synchronously.

13. high voltage isolator as claimed in claim 1, it is characterized in that described latch components (84) comprises touching lever (841), locking bar (842), be arranged between locking bar (842) and the touching lever (841) in order to the motion of touching lever (841) is transformed into the fanning strip of freeing motion 844 of locking bar (842) and with the spring of locking bar (842) towards the direction bias voltage of position-limited wheel (8);

Described the first lower flange (83) and described position-limited wheel (8) have respectively the hole, described locking bar (842) is contained in the hole of described position-limited wheel (8), and under blocking, be inserted in the hole of described the first lower flange (83), so that described position-limited wheel (8) is connected with described the first lower flange (83); And under described disengaged position, described locking bar (842) is deviate from from the hole of described the first lower flange (83); And

Described high voltage isolator also comprises the spacing pin (45) that is arranged on the base, to promote described touching lever (841) thus from the hole of described the first lower flange (83), throw off described locking bar (842).

14. high voltage isolator as claimed in claim 1 is characterized in that, described latch components comprises: be arranged on the scarce wheel (87) on the described flange shaft (80); The snap close piece that below position-limited wheel, is fixedly installed (86), described snap close piece is provided with one and ends wheel (861) around rotating the second pin of axle (863), this second pin end wheel with the breach that lacks wheel (87) and radially mate, described scarce wheel (87) also has in the position of locking with the second pin and ends the breach that wheel (861) radially mates, the second pin ends the forearm of taking turns (861) but also being fixed with backstop, realizes the release action in order to cooperate with spacing pin (45); And end the torsion spring that wheel (861) arranges at the second pin, so that described the second pin ends and takes turns (861) and inserted in the breach on the described scarce wheel by deflection elastic force.

15. high voltage isolator as claimed in claim 12 is characterized in that, described latch components comprises: be arranged on the reinforcement on the described arc gear ring (81), be provided with power transmission tooth (823) in this reinforcement week; And be arranged on the tooth (922) to be meshed with described power transmission tooth (823) on the part of described position-limited wheel (8).

16. high voltage isolator as claimed in claim 12, it is characterized in that, described latch components also comprises the snap close piece (90) that is arranged on regularly on the base (46) and the first scarce wheel (93) of fixing with described position-limited wheel (8), wherein said snap close piece (90) and described first lacks wheel (93) and interacts, so that described in described two-step action wherein is locked in position-limited wheel (8) on the described base (46) in the step.

17. high voltage isolator as claimed in claim 16, it is characterized in that, described snap close piece (90) comprising: be fixed on shell (900) on the base (46), with one heart be arranged on little axle (904) in the shell (900), be arranged on upper and rotating the first pin of this little axle (904) and end wheel (902) and be enclosed within deflection spring on the little axle (904), this spring ends wheel (902) along periphery to described the first pin and applies a deflecting force; And, described the first pin ends wheel (902) and is provided with one first breach radially to mate with the first scarce wheel (93), the described first scarce wheel (93) also has with described first sells the second breach (932) that ends the wheel radial coupling, so that in the described wherein step in the two-step action that closes a floodgate, described the first pin ends wheel (902) and imports in described the second breach (932), and described the first pin ends wheel (902) and also lacking the aspect forearm of following radial protrusion (901) that wheel (93) cooperates with first.

18. high voltage isolator as claimed in claim 17, it is characterized in that, described flange shaft (80) also is provided with thumb wheel (98), this thumb wheel (98) is provided with the first driving lever (982), in order in the separating brake process, stir the forearm (901) of described snap close piece (90), so that ending wheel (902), described the first pin from second breach (932) of the described first scarce wheel (93), throws off.

19. high voltage isolator as claimed in claim 17, it is characterized in that, described latch components also comprises the second snap close piece (86) of being arranged on the position-limited wheel (8) and cooperates and be fixed on second on the axle (801) with described the second snap close piece (86) and lacks wheel (99), in order in described another step in described two-step action, described position-limited wheel (8) and described axle (801) are locked together.

20. high voltage isolator as claimed in claim 19, it is characterized in that, the second pin of described the second snap close piece (86) ends the 3rd breach and the described second scarce wheel radial coupling that wheel (861) is provided with, and described second lacks wheel (99) is provided with described the second pin and ends the 4th breach (991) that wheel (861) radially mate, ends with the second pin of described the second snap close piece (86) under lock-out state and takes turns (861) and import in the 4th breach.

21. high voltage isolator as claimed in claim 20, it is characterized in that, described second lacks wheel (99) also comprises chute (993), described chute (993) is arc, corresponding to the central angles of 90 degree roughly, and described first lack the upper pin (931) that arranges of wheel (93) and be inserted in the described chute (993) and can slide in this chute (993); And second driving lever (992), in order to promote described the first pin end wheel (902) forearm (901) so that described snap close piece (90) free.

22. high voltage isolator as claimed in claim 21, it is characterized in that, be provided with spacing pin (45) in the pre-position of described base (46), be used for promoting second of the second snap close piece (86) and sell the forearm that ends wheel (861), so that its another step at closing operation frees.

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