CN101714476A - 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 that twin columns horizontally rotate open type, and every phase structure is made up of base, post insulator, running part and current-carrying part.

Above-mentioned isolating switch is action like this: when closing operation, operating mechanism is given a lateral brace insulator by transmission component with clockwise transmission of torque, 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, make the both sides conductive arm swing 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 form the isolating switch that three-phase divides body action at an every operating mechanism and transmission component of being provided with mutually.

The operating process of " branch ", operating mechanism is given the post insulator that connects therewith by the drive link assembly with counterclockwise transmission of torque, and just its action is opposite with the direction of closing.

Along with the improvement of isolation switch contact assembly, the contact pressure between main contact and the involutory contact is increasing, and causing the operating physical force of separating brake and combined floodgate to increase to the post insulator that makes above-mentioned operating mechanism can't bear.

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

For fear of this problem, in No. the 200720120539.6th, the inventor's utility model patent formerly, a kind of isolating switch body that " branch " " closes " action of finishing is in two steps 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 power from operating mechanism, main contact lateral brace insulator rotates, and drives involutory contact lateral brace insulator through trip gear and cross link and rotate in opposite directions, after main contact lateral brace insulator rotates about 90 degree, trip gear is thrown off cross link, thereby enters into for second step.

In 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, thereby make the fingertip that is connected on this spring assembly be pressed on the involutory contact by drive link.

But, this mode that spurs main contact by the drive link in the conductive arm has an obvious defects, promptly, in the process that contact closes, post insulator can be subjected to the influence of moment of flexure, just, in second step, when transposition running part pulling drive link, the top of main contact lateral brace insulator is subjected to a pulling force towards involutory contact direction, thereby, on whole post insulator, applied one and toppled over moment of flexure, if serious, this moment of torsion can cause the post insulator fracture, for this reason, must increase the diameter of post insulator, and this brings problems such as cost rising.In addition, in above-mentioned isolating switch, the work of trip gear is also unreliable sometimes, 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, the branch smooth operation, in deciliter process, can not apply the isolating switch of moment of torsion to post insulator.

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 the cross link that makes 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 " branch " operation, make isolating switch move 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, makes described main contact lateral brace insulator rotate and described involutory contact lateral brace insulator does not rotate; And in another step action, make the both sides post insulator link by cross link,

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 that described involutory contact is linear to be moved.

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, reduce the moment of flexure of toppling over that isolating switch produces so effectively in the closing operation process, therefore improved isolating switch whole reliability and fail safe.

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 cutaway view of the main contact side component of high voltage isolator according to the preferred embodiment of the present invention, 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 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 second execution mode of limit lock catch part;

Fig. 9 C, Fig. 9 D show the scarce wheel of 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 the cutaway view that transposition running part shown in Figure 5 is in combined floodgate and separating brake service position respectively 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 the structural representation and the workpiece 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 the present invention better, at first the high voltage isolator that the inventor once proposed is described with reference to attached Fig. 1 and 2.

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 of operating mechanism 42, main contact and involutory contact side on this phase high voltage isolator and is separately positioned on main contact 5 and involutory contact 50 on post insulator 91 and 92 by means of conductive arm 31 and 32.

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, make the post insulator 92 of involutory contact side rotate in opposite directions by the cross link 40 that is connected between post insulator 91 and 92, promptly 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 of fixedlying connected with main contact lateral brace insulator 91, be arranged on the dropout retaining 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.When buckle 613 cooperation buckles 621 make the wheel 61 of threading off go to synchronously with main contact lateral brace insulator 91 dropout part 62 and dropout retaining 64 are collided, 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 to contact with 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 of fixedlying 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 an eccentric hinge 59 that is provided with 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 bearing pin 59 of the rotation of drive plate 57 by the off-centre setting is transformed into and pulls back driver plate 56, and and then pulling drive link 58.Drive link 58 pulls back spring assembly, makes described spring assembly and fixedly connected with it fingertip move 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 subjected 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, wherein because therefore the similar of involutory contact side component and above-mentioned involutory contact side component, only describes the structure of main contact side component below.

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, describe transposition running part and limit lock catch part below in detail as main points of the present invention.

The transposition running part:

Be similar to high voltage isolator of the prior art, comprise main contact 5, conductive arm 31 that main contact 5 is connected with 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 last shell 11 and the lower casing 12 that fastens to together, is arranged on lower casing 11 and 12 interior flange shaft 10 rotationally, fixes so that 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 flange shaft 10 rotationally with described flange shaft 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, these eccentric driving wheel 22 excircles are provided with bearing 221, 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 flange shaft 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 flange shaft 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 conductive arm 31, this conductive arm 31 is by the described guide hole of going up between the lower casing 11 and 12 112, makes 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, so that 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 " branch ", " closing " process, pull bar 25 is fixed with respect to shell.And in order to make driver plate 26 to move, the support 262 of driver plate 26 is divided into two and half ones up and down, and is provided with slit 264 betwixt, 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 flexibly connects 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, make the transposition running part to stablize and remain on branch, close state, the resistance when reducing to operate simultaneously.

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 is provided with Flexible element 21 on shell, this Flexible element 21 comprises bearing 211, be arranged on the ball 231 in bearing 211 holes and the spring 233 of adjustable seamless power, 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 make the transposition running part have the resistance that keeps stable, and realize the divide-shut brake location at separating brake or "on" position.

Be similar in the such scheme, 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 is provided with between the lower casing, makes driver plate and conductive arm 31 move left and right in the axial direction.

In addition, in 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 the basic arm of conduction be subjected in advance one with the reverse elastic force of touch spring balancing out the elastic resistance of touch spring, thereby in the transposition of closing a floodgate is moved, 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, so that 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 in the present embodiment, to have adopted arc gear ring to carry out alternate transmission with the pull bar kind of drive.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 flange shaft 80 and receive from the flange 83 of the power of operating mechanism 42, be arranged on rotationally on the described flange shaft 80 and and the hinged position-limited wheel 8 of described cross link 40 and be arranged on latch components between described flange 83 and the described position-limited wheel 8, described latch components can interconnect described flange 83 so that switch between blocking that they rotate and the disengaged position with described flange 83 and 8 disengagements of described position-limited wheel 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, make the post insulator 91 of post insulator 92 and main contact side of involutory contact side rotate simultaneously.And when latch components is thrown off, make the rotation of main contact lateral brace insulator 91 can not be passed to involutory contact lateral brace insulator 92, make the latter no longer together rotate with main contact lateral brace insulator 91.

[first execution mode of limit lock catch part]

As shown in Figure 7, Fig. 7 illustrates first execution mode of described limit lock catch part.Downside at main contact lateral brace insulator 91 is provided with one and axle 801 one flange connecting axles 80, and this flange shaft 80 for example is connected by bolt with the lower end of post insulator 91.On this flange shaft 80, fixedly install flange 83, and, at the downside of flange 83, on axle 801, for example position-limited wheel 8 is set rotationally by bearing.Between position-limited wheel 8 and 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 so that 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 breaks away from the lockhole 843 of flange 83, makes position-limited wheel 8 and flange 83 throw 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 turning to lockhole 843 when aiming at locking bars at flange 83, locking bar 841 is inserted in the lockhole 843, thereby makes that position-limited wheel 8 is locked and rotate with flange 83.

[second execution mode of limit lock catch part]

To shown in the 9D, Fig. 9 A illustrates second execution mode of limit lock catch part to 9D 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, on axle 801, be fixed with one 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 comprises that pin only takes turns 861, be fixed on below the position-limited wheel little axle 863, be enclosed within the deflection spring on this little axle and be provided with one heart and only take turns the stop block 862 of 861 scopes of activities in order to limit pin, described 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 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 position of snap close 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 summit 905 that pin is only taken turns 861 breach is lacked the pits 933 that are provided with in the breach 871 of wheel 87 and is driven, and further rotates from the breach 871 that lacks wheel 87 and throws off and make pin only take turns 861.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 are provided with, 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, so that match power transmission with the tooth 922 that is provided with on the position-limited wheel 8.And at position-limited wheel 8 downsides, be fixed on flange shaft 801 and be provided with driving lever 88, post insulator by gate-dividing state when "on" position is rotated, when arc gear 81 turns clockwise with gear 83 transmissions, 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 during counterclockwise to Figure 10 C rotated position, 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 the separating brake position, and, see Figure 10 B by 47 stop of separating brake pin.

Operation principle

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

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 flange 83 and post insulator 91 by transmission mechanism, and arc gear ring 81 rotations of flange 83 drives, so that carry out alternate transmission.In addition, also can at first be delivered to arc gear ring 81 by linkage etc., then, give flange 83 by arc gear ring 81 with the closing operation transmission of torque, and drive post insulator 91 rotates, make conductive arm 31 together to swing counterclockwise, simultaneously, because snap close piece 84 is in the snap close state, position-limited wheel 8 also rotates thereupon, and by cross link 40, make involutory contact lateral brace insulator 92 rotate simultaneously, cause involutory contact 50 to the direction swing 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 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 flanges 83, and and then no longer together rotate and stop going up in this with flange 83, thereby post insulator 92 is also stopped operating and, see shown in Figure 1 by corresponding spacing non-magnetic shim 49 stop.

At this moment, post insulator 91 is rotated further, promptly, flange shaft 10 is rotated further, when conductive arm 31 and main contact 5 are subjected to involutory contact 50 resistances, the rotating torque of flange shaft 10 overcomes the spring force effect in the spacing clutch 27 and makes the transposition clutch 27 in the transposition running part 1 leave a reset, 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 flange shaft 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, make main contact and involutory contact compress, be rotated further to the transposition clutch 74 to the position set, shown in Figure 11 A.Locating wheel 24 limited retaining 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 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 post insulator 91 rotation counterclockwise, this moment is because position-limited wheel 8 and flange 83 disengagings, post insulator 92 is not subjected to torsional moment, the running part that replaces simultaneously also is subjected to the spring restoring force of contact, and make by driving wheel 22 and to be subjected to a counterclockwise moment in flange shaft 10, it is motionless that its conductive arm 31 can remain on original position, its transposition clutch also by " 1 " to " 0 " position swing, 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 retaining 28 reverse stop, conductive arm 31 and post insulator 91 be counter-clockwise swing together, at this moment, because flange shaft 80 goes near 90 ° of positions, latch components is in blocking, 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 are swung 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 of transposition in the clutch 27 is being to be used for 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 on the other hand can be with touch spring 53 distortion balances out a part by the elastic force of spring 272.In order to alleviate closing operation power, make operation lighter, can select the bigger spring of balance contact elastic force that is used for, but cause sub-switching operation not reset so sometimes.This is because in sub-switching operation, when post insulator begins to rotate counterclockwise, touch spring makes spring 272 transposition actions by conductive arm 31, the counterclockwise torque that acts on 22 1 opposite shell of driving wheel 11,12 by thrust plate 26, but because spring 272 is bigger, 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 operation of equipment.

Reliability for the operation that guarantees isolating switch adopts following execution mode, to Figure 12 F, comprises a snap close piece 90 as Figure 12 A in latch components, and this snap close piece 90 is fixedly installed on (snap close piece 90 big portions 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.

Be fixed with one and lack wheel 93 below position-limited wheel 8, Figure 12 D illustrates the combining structure view that lacks wheel 93 and position-limited wheel 8.

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

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 rotatable position-limited wheel 8 that 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 the little axle 904 in the shell 900 with one heart, be provided with a pin rotationally at this little axle 904 and only take turns 902, and be enclosed within the spring that the made pin on the little axle 904 is only taken turns 902 deflections, this deflection spring only takes turns 902 along the clockwise direction drive pin, described pin only takes turns 902 at it and lack wheel 93 aspects that cooperate and be provided with lacking 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 qualification 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 and cooperate with pin.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 constitute by first section and second section, wherein first section is the edge of about corresponding 90 central angles, and second section comprise breach 932, first section and second section for example is wholely set on described position-limited wheel 8 with one heart by welding then, thereby realizes 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 for promoting in second step of separating brake lacking below the wheel 93 pin 931 so that power transmission tooth 922 certainly 823 be meshed with tooth, 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 swings in opposite directions thereupon simultaneously, make contact 5,50 are incorporated into to when closing the position in advance, power transmission tooth 922 leaves thickening tooth 823, driving lever 982 has turned over snap close piece 90, at this moment lack the snap close position of wheel 93 breach 932, make the pin of snap close piece 90 only take turns 902 and under the driving of torsion spring, insert counterclockwise in the breach 932 over against snap close piece 90.Post insulator 91 continues to clockwise rotate, at this moment position-limited wheel 8 has stopped and has been 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 of lacking wheel 93 by snap close piece 90, therefore offside post insulator 92 is by stop, 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, be 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 turn over a little angle going to (turn over 90 ° and finish transposition) when presorting the position, the summit 905 that pin is only taken turns 902 breach 903 is lacked the pits 933 that are provided with in the breach 932 of wheel 93 and is driven, and further rotates and throws off from the breach 932 that lacks wheel 93 and make pin only take turns 902.Subsequently, the driving lever 88 of thumb wheel 98 combines with scarce pin 931 of taking turns on 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 is simultaneously together swung conductive arm 31 and post insulator 91, offside post insulator 92 begins to rotate simultaneously, conductive arm 31,32 is swing privately mutually, be set at pin 47 stop on the base 46 until driving lever 88, pin 931, the separating brake action is finished.This shows, drive pin by the pit 933 of utilization in the breach 932 that lacks wheel 93 and only take turns 902, 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 littler, 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 three-phase divides in the isolating switch of body action, the increasing spring force measure of adopting in order to alleviate closing operation power can produce the problems referred to above equally, in order to solve above-mentioned same problem, as Figure 13 A to shown in the 13D, except first snap close piece 90 that on base 46, is provided with, latch components also is included in second snap close piece 86 that is provided with on the position-limited wheel 8, and below position-limited wheel 8, also be fixed with first and lack wheel 93, be fixed with second in flange shaft 801 and lack wheel 99, dotted portion has shown the said structure parts below the spacing flange among the figure.

As shown in FIG. 13A, described first to lack wheel 93 marginal belts jagged 932, cooperates snap close piece 90 to be provided with pin therewith and only take turns 902.The breach 932 that lacks wheel 93 is only taken turns 902 external diameters with 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 the wheel.And described first lacks in the breach 932 of wheel 93 and also is provided with pit 933, so that combine with summit 905 that 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, 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 pin of second snap close piece 86 ends the breach 861 of wheel.

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

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

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 second driving lever 992 releases that lack on the wheel, that is to say, in the present embodiment, 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 lacks wheel 99 cooperations with second position-limited wheel 8 and flange shaft 801 is locked together in, and finishes the release action by pin 45.

Its operation principle is described below, promptly, the limit lock catch part of the alternate kind of drive of non-pull bar return the principle that resets, Figure 13 A is according to the alternate kind of drive of three-phase split actuating, every phase operating mechanism directly is connected with flange shaft 801 by a vertical links 641, before closing operation, at first the pin of second snap close piece 86 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 °, when main contact and involutory contact are incorporated into, the forearm of second snap close piece 86 is stirred a little angle by pin 45, drive the summit 905 that the pin of second snap close piece 86 ends the breach 861 of wheel by second pit 933 that lacks wheel 99, thereby impel second snap close piece 86 to free, on the other hand, at this moment, first breach 932 that lacks wheel 93 also goes to the correspondence position of first snap close piece 90, thereby the 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 (see figure 1)s, 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 generations compress action, to closing position.

During the separating brake action, be similar in the 4th execution mode, because snap close piece 90 is locked in position-limited wheel 8 on the bearing base 46, post insulator 91 rotates counterclockwise and makes the swing of transposition clutch spring, and make conductive arm linear movement to the right, be fixed on second on the flange shaft 801 and lack wheel 99 and post insulator 91 rotation in the counterclockwise direction simultaneously, main contact unclamps gradually, transposition transmission mechanism 1 transposition action when going to about 90 °, conductive arm 31 stops linear movement, first snap close piece 90 of limit lock catch part is pushed open by second driving lever 992 that lacks wheel 99 simultaneously, the i.e. forearm of first snap close piece 90 low-angle that is open, simultaneously, first pit 933 that lacks wheel 93 drives the summit 905 that pin is only taken turns 902 breach 903, impel first to lack wheel 93 disengagings, at this moment, because second lacks the rotation of wheel 99, 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, pin is only taken turns 861 and is clockwise rotated the breach 991 of inserting scarce wheel 99, position-limited wheel 8 is locked together in flange shaft 801, 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 the separating brake 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 on main contact lateral brace insulator.

In addition, by isolating switch according to the present invention, the part of threading off work is more reliable, and can adapt to various bad working environment.

Certainly, the 5th execution mode of above-mentioned limit lock catch part can be applicable to adopt in the isolating switch of bevel gear transmission or worm and gear transmission or alternate transmission side rotary types such as tooth bar transmission or chain drive.

Though above description also illustrates high voltage isolator according to the preferred embodiment of the present invention, 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 on these execution modes, make various modification and improvement, and above-described each execution mode can mutually combine and constitutes new execution mode.

Claims (26)

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 post insulator (92), involutory contact (50) is supported on conductive arm (32) on this post insulator (92), the main contact side component comprises the main contact (5) that engages with involutory contact (50), post insulator (91), be connected with the conductive base (52) of main contact (5) and main contact (5) is supported on conductive arm (31) on the post insulator (91), running part comprises makes the cross link (40) of involutory contact side component and 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 " closing " and " branch " operation, make isolating switch move in two step modes, and the wherein step that described limit lock catch part is formed in the described two-step action is in off-state, make described main contact lateral brace insulator rotate and described involutory contact lateral brace insulator does not rotate, and make described main contact side and involutory contact lateral brace insulator (91,92) interlock in its described another step;

It is characterized in that in a described wherein step, described transposition running part becomes the rotation of described main contact lateral brace insulator (91) into rectilinear motion so that the conductive arm of described main contact side (31) towards or deviate from that described involutory contact is linear to be moved.

2. high voltage isolator as claimed in claim 1, it is characterized in that, described transposition running part comprises: the driving wheel (22) that together rotates with described main contact lateral brace 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 fixedlyed connected with described conductive arm (31), make the rotation of described driving wheel (22) become 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).

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

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

5. high voltage isolator as claimed in claim 2 is characterized in that, described driving wheel (22) is a cam.

6. high voltage isolator as claimed in claim 2, it is characterized in that, described shell (11,12) comprises last 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 conductive arm.

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

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

9. high voltage isolator as claimed in claim 2, 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).

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

11. high voltage isolator as claimed in claim 10, 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) goes up described inserted link is remained on the spring (272) of extended state.

12. high voltage isolator as claimed in claim 10, 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 to described locating wheel (24) bias voltage, makes described ball to fall into the location notch hole that forms on described locating wheel (24) periphery at the described ball in described precalculated position.

13. high voltage isolator as claimed in claim 1, it is characterized in that, described 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 flange (83) periphery formation, described flange (83) is fixing with respect to the post insulator (91) of described main contact side, makes that the post insulator (91) of the main contact side component between the homophase does not rotate synchronously.

14. as each described high voltage isolator among the claim 1-13, it is characterized in that, described limit lock catch part comprises the flange shaft (80) that is arranged at described main contact lateral brace insulator (91) downside, be fixed on that flange shaft (80) goes up and receive flange (83) from the power of operating mechanism (42), being arranged on described flange shaft (80) rotationally goes up and the position-limited wheel (8) hinged with described cross link (40), and be arranged on latch components (84) between described flange (83) and the described position-limited wheel (8), described latch components (84) can described flange (83) and described position-limited wheel (8) are interconnected so that one of rise between the blocking that rotates and the disengaged position and switch described flange (83) and described position-limited wheel (8) disengagement.

15. high voltage isolator as claimed in claim 14, 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) so that 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 locking position-limited wheel (8);

Described flange (83) and described position-limited wheel (8) have the hole respectively, 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 flange (83), so that described position-limited wheel (8) is connected with described flange (83); And under described disengaged position, described locking bar (842) is deviate from from the hole of described 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 flange (83), throw off described locking bar (842).

16. high voltage isolator as claimed in claim 14 is characterized in that, described latch components comprises: be arranged on the scarce wheel (87) on the described flange shaft; The snap close piece that below position-limited wheel, fixedly installs (86), described snap close piece is provided with one and ends wheel (861) around the rotating pin of axle (863), this pin ends wheel and has the breach that radially mates with scarce wheel (87), described scarce wheel (87) also has in the position of locking with pin and ends the breach that wheel (861) radially mates, 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 wheel (861) at pin and go up the torsion spring that is provided with, so that ending wheel (861), described pin inserted in the breach on the described scarce wheel by deflection elastic force.

17. high voltage isolator as claimed in claim 14, it is characterized in that, described 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 flange (83) periphery formation, and 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 on the part of described position-limited wheel (8) with described power transmission tooth (823).

18. high voltage isolator as claimed in claim 17, it is characterized in that, described latch components also comprises snap close piece (90) that is arranged on regularly on the base (46) and the scarce wheel of fixing with described position-limited wheel (8) (93), wherein said snap close piece (90) and described scarce wheel (93) interact, so that wherein in the step position-limited wheel (8) is locked on the described bearing base (46) in described operation.

19. high voltage isolator as claimed in claim 18, 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 that this little axle (904) is gone up and rotating pin ends wheel (902) and be enclosed within deflection spring on the little axle (904), this spring ends wheel (902) along periphery to pin and applies a deflecting force; And, described pin ends wheel and is provided with a breach radially to mate with scarce wheel (93), described scarce wheel (93) also has the breach (932) that ends the wheel radial coupling with pin, so that the wherein step of closing a floodgate, described pin ends wheel (902) and imports in the described breach (932), and described pin ends wheel (902) also at an aspect forearm of following radial protrusion (901) that cooperates with scarce wheel (93).

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

21. high voltage isolator as claimed in claim 18, it is characterized in that, described latch components also comprises second snap close piece (86) that is arranged on the position-limited wheel (8) and cooperates and be fixed on second on the flange shaft (801) with described second snap close piece (86) and lacks wheel (99), so that in another step of described operation, described position-limited wheel (8) is locked onto with described flange shaft (801).

22. high voltage isolator as claimed in claim 21, it is characterized in that, the pin of described second snap close piece (86) ends the breach and the described second scarce wheel radial coupling that wheel (861) is provided with, and the described second scarce wheel (99) is provided with described pin and ends the breach (991) that wheel (861) radially mates, and only takes turns (861) with the pin of described second snap close piece (86) under lock-out state and imports in this breach.

23. high voltage isolator as claimed in claim 22, it is characterized in that, described second lacks wheel (99) also comprises chute (993), described chute (993) is an arc, corresponding to the central angles of 90 degree roughly, and described first lack wheel (93) and go up the pin (931) that is provided with and be inserted in the described chute (993) and can slide in this chute (993); And driving lever (992), in order to promote described pin end wheel (902) forearm (901) so that described snap close piece (90) free.

24. high voltage isolator as claimed in claim 23, it is characterized in that, be provided with pin (45) in the pre-position of described base (46), the pin that is used to promote second snap close piece (86) ends the forearm of wheel (861), so that its another step at described feed motion frees.

25. as each described high voltage isolator among claim 16 or the 18-24, it is characterized in that, described scarce wheel (87,93,99) breach (871,932,991) also be provided with pit (933) in, so that at each snap close piece (90,86) pin ends wheel (861,902) by pin (45), or driving lever (982, when 992) promoting to turn over a low-angle, this pit (933) ends wheel (902 with corresponding pin, 861) one of them summit (905) of breach engages, and ends wheel (902 thereby drive corresponding pin, 861) make it from described scarce wheel (87,93,99) breach (871,932,991) throw off in.

26. as each described high voltage isolator among the claim 18-25, it is characterized in that, described scarce wheel (93,99) comprises independent first section and second section, described first section edge that comprises corresponding about 90 degree central angles, and described second section comprise breach (932,991), and described first section and second section is wholely set with one heart on described position-limited wheel (8).

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