CN102047363A

CN102047363A - Control for a high-voltage/medium-voltage electrical device having a short actuation time

Info

Publication number: CN102047363A
Application number: CN2009801198483A
Authority: CN
Inventors: 卢卡斯·特赖尔; 彼得·冯奥尔曼; 马库斯·凯斯尔
Original assignee: Areva T&D SAS
Current assignee: General Electric Technology GmbH
Priority date: 2008-05-30
Filing date: 2009-05-29
Publication date: 2011-05-04
Anticipated expiration: 2029-05-29
Also published as: EP2375429B1; WO2009144297A1; CN102047363B; FR2931997A1; EP2283501B1; KR20110028296A; ATE549730T1; EP2283501A1; EP2375429A1; KR101651918B1

Abstract

A drive device for a high-voltage/medium-voltage switch device comprising at least one actuator (6, 12) for opening/closing a switch of said device, a mechanism that can move a movable part of said switch and a force transmission element (8, 14) for transmitting a force between the actuator (6, 12) and said mechanism, said transmission element (8, 14) being formed by a flexible belt.

Description

The control device that is used for high pressure/piezoelectricity subset with short actuating time

Technical field

The present invention relates to a kind of drive unit and mechanical driving device that is used for the high pressure switchgear, in particular for the drive unit and the mechanical driving device of high pressure contact maker.The present invention be more particularly directed to comprise be used to carry out disconnect and closed contact maker on the drive unit of spring of circulation.

Background technology

The drive unit that is used for the high pressure switchgear of known type comprises spring (being called tripping spring) that is used to disconnect contact maker and the spring (being called switching-in spring) that is used for closed contact maker.To combined floodgate springs preload lotus and hold it in the state, that is, make that the energy in the retracting spring is to cause the contact maker closure via mechanical coupler when providing the order of closed contact maker.Arrange drive unit, make that the release of stored energy causes the tripping spring preload in the switching-in spring, tripping spring is remained in this state, till it receives the order that disconnects contact maker.

Be used to disconnect and the use of closed reloading spring, provide the startup of suitable weak point and stable a period of time, because come the mechanically duration of setting operation by the inertia of load in the spring (amount of energy) and moving component.

A demand that should be noted that the drive unit of the type is, must in less than 1 second short switching time, carry out machinery and disconnect and closed procedure, and for example, be to be used for 90 milliseconds closed (ms) and the grade of the 20ms to 30ms that is used to disconnect.

In addition, actuated element is remained in its preload condition, till the order that provides disconnection or closure.

As a result, actuated element must continue store mechanical energy in this way in the very long time.

In addition, the power that actuated element also was subjected to acutely applying in the very short time, especially itself and spring and with the zone of the securing member of corresponding axis in.In the process of opening operation, all energy in the retracting spring at once, produce sizable tensile stress in the feasible release from then on, and the actuated element in the zone of the securing member between the securing member between actuated element and the tripping spring and actuated element and the disconnection axle is applied this tensile stress.Tensile stress can reach tens of thousand Ns of (kN), typically 30kN.

Therefore, the design actuated element and with spring and the axle connector, make it can bear relevant stress.

In addition, this drive unit can be subjected to the influence of weather, and, must be to make it can bear temperature, and can adapt to accidental condensation the internal placement of drive unit from-50 ℃ to+50 ℃ scope.

This drive unit also is intended to use very long seeervice cycle, for example decades.

At last, drive unit is formed safety means, makes to guarantee its reliability.

As a result, this drive unit (especially transmitting the element of closing force and breakaway by it) is designed to, guarantees under condition very harsh aspect stress that is applied and the external condition, guarantee operation reliably in the very long time.

A succession of metal rolls of known usefulness or cable be as actuated element, for example, and in the drive unit of in document FR 2778492, describing.

Roller chain and cable provide safety in long time period.

Yet it has big quality, and this can reduce the toggle speed of contact maker.

In addition, roller chain need be lubricated, with any fault in the transmission of avoiding power.In addition, it easily is corroded, and this also can cause the fault of drive unit.Providing the wall scroll cable to transmit the place of control signal, its diameter must enough be applied to its power greatly with support.This diameter increases the hardness of cable, and this makes and must use large diameter guide wheel, thereby also increases the space requirement to this drive unit.

Therefore, an object of the present invention is, provide drive unit fully reliably to the high pressure switchgear, it has littler inertia in its moving component, cause characteristic time or operating time of reducing, and it is compared with the drive unit of known type also has maintenance requirements and the cost that reduces.

Summary of the invention

Realize above-mentioned purpose by the drive unit that is used for the high pressure switchgear, this drive unit comprises actuated element between separating brake actuator and disconnection axle, actuated element comprises flexible driving band, simultaneously, also has the actuated element that comprises flexible driving band between combined floodgate actuator and closed axle.

The belt that this driving-belt is made by textile fabric, or many parallel cables, at least a portion length of described cable is embedded in the flexible substrate.

Therefore, reduce the quality of actuated element, also can shorten actuating time thus.In addition, no longer must provide the lubricated of actuated element, feasible easier maintenance.In addition, cost is lower than the cost of the drive unit of the type with chain.

Provide the special connector that suitably adapts to by position, make and to use this force transfer element at the stress that is subjected to applying by actuator.

The driving-belt that comprises many cables has the following advantages:

It is flexible, the feasible pulley that returns that can use minor diameter.By the quantity of the cable determining to be arranged in parallel and the diameter of cable, can optimize radius of curvature.Therefore, reduce overall dimensions.

Driving-belt needs maintenance seldom or does not need repairing.

Since the inertia that reduces of driving-belt, and reduce actuating time (actuating time).

Therefore, the present invention mainly provides a kind of drive unit that is used for the high pressure switchgear, comprise that at least one is used for the actuator of the contact maker of the described switchgear of cut-off/close, is suitable for moving the mechanism of the movable part of described contact maker, and force transfer element, described force transfer element comprises flexible driving band.

For example, described flexible driving band is arranged between actuator and the described mechanism.

Driving-belt can have and is used for driving-belt at its two ends and actuator and the end connector that is connected with described mechanism, and each end connector has and is used for fixing to the fastening end of an end of driving-belt and is used for that connector is fixed to the bar that extends on the direction of motion of driving-belt or is fixed to fastening end with the pin of described motion quadrature.

In one embodiment, driving-belt comprises many cables, and described many cables are set parallel to each other and their at least a portion length is embedded in the flexible substrate.Then, described matrix can extend on most of length of described cable continuously.

For example, described matrix can be made by thermoplastic, for example polyethylene.

Advantageously, by punching press described cable is clamped in the end connector.

Also described matrix can be clamped in the end connector.

In one embodiment, at least one end connector forms porose, and the axis in described hole is directed on the direction of motion of driving-belt, and each pore volume is received the free end of described cable, and, wherein, by punching press will every cable maintenance in position.At least one end connector can have and the orthogonal axe in described hole and the transverse holes of extending with the plane parallel ground of the axis that comprises the described hole that is used for cable, pin is introduced in the described transverse holes, the diameter of pin equals the diameter of transverse holes, be clamped in end between the periphery and pin of respective aperture, thereby before final assembling, provide pre-assembled by punching press with every cable.

Advantageously, at least one end connector has the face with respect to the plane inclination of the axis that comprises described hole, make confining force on the cable that obtains by punching press on a side identical with the closing end in hole than on the side of opening end in the hole greatly, for example, described angle with respect to 1.5 ° of the plane inclinations of the axis that comprises the hole.

In another embodiment, driving-belt is made by textile fabric woven or braiding.For example, these textile fabrics are poly, polyester or aromatic polyamides.

By comprising the driving-belt of fiber woven or braiding, at least one end connector can comprise parallel to each other and with first and second of the direction of motion quadrature of driving-belt, two axles are fixed to the tightening member of end connector, to be fixed to described mechanism or to be fixed to actuator, every end of driving-belt is centered on the axle winding of end connector, with between second described tightening member that is arranged on end connector and first, the end of folding driving-belt also is fixed on the end connector with the mode that the forms closed loop end with driving-belt, this ring has inner face and outside, this ring so that its inner surface and first is coupling the mode touched around first, pass through, and so that its outer surface and second is coupling the mode touched is passed through around second, the ring portion of passing through around second comprises the driving-belt of two overlapping thickness, and end connector is left by extending along first in the end of the ring that is limited by the free end of driving-belt.

Described at least one actuator can comprise spring, and described mechanism comprises the lever that is fixed on rotatably on the axle that is suitable for being connected with the movable part of contact maker.

Drive unit also can further comprise and is used for jockey that driving-belt and spring are linked together, transmits between driving-belt and spring along the axis of spring to exert all one's strength.

The jockey that driving-belt and spring are linked together can comprise the frusto-conical member that is installed in the spring, and the bottom of passing through frusto-conical member engages with the end turns of spring, described frusto-conical member is connected with end connector via the screw rod that is screwed in the end connector, by first nut described screw rod is fixed to frusto-conical member.

Drive unit can comprise further advantageously that stop nut device, stop nut device comprise the pipe and second nut, are clamped in described pipe between first nut and second nut.Advantageously, the length of described pipe equals at least five times of diameter of screw rod.

Drive unit of the present invention also can further comprise jockey, and this jockey is used for driving-belt and lever links together and pivot around the axis with the parallel axes of described axle.

Lever can have the projecting shaft of axis that is parallel to axle, and end connector has the hole with the direction of motion quadrature of driving-belt, and described pore volume is received projecting shaft, and end connector can be around the projecting shaft rotation.

End connector can advantageously comprise two by the hinged each other part of connecting rod, the surperficial quadrature of hinge axes and driving-belt.

For example, actuator is that contact maker disconnects actuator, and lever is to disconnect lever, and described axle is a main shaft, and drive unit further has second actuator that constitutes the contact maker closing actuator.

Closing actuator can comprise the spring that is connected with closed lever by described driving-belt, closed lever is fixed on the closed axle that is parallel to main shaft, disconnecting lever is fixed on the main shaft, fixing closed lever is to rotate with cam, cam is suitable for working on the disconnection lever, to cause the contact maker closure.

Drive unit also can further comprise be used to drive closed lever rotation the tooth driving wheel arranged, have the tooth driving wheel with by motor-driven gear train engagement, spring is under the load.

The present invention also provides high pressure or the medium voltage switchgear equipment with drive unit of the present invention.

The present invention further provides the method that driving-belt and end connector are assembled together, driving-belt comprises many cables, parallel to each other and their at least a portion length of described many cables is embedded in the flexible substrate, the free end of cable is not embedded in the matrix, and, end connector forms porose, and the quantity in described hole is identical with the quantity of cable, said method comprising the steps of:

One end of every cable is introduced corresponding hole; And

In the mode that mainly makes bore deformation by punching press the end connector at place, described hole is applied stamping press with the cable quadrature.

Method of the present invention can further be included in the final assembling step of pre-assembled cable in described hole before.

Method of the present invention also can further comprise the step that the joint between driving-belt and the end connector is applied sealing device, for example by applying the slurry of polyurethane type.

Description of drawings

Under the help of the following description and drawings, can more be expressly understood the present invention, wherein:

Fig. 1 is the perspective view according to an example of the drive unit that is used for high pressure or medium voltage switchgear equipment of the present invention;

Fig. 2 shows the perspective view of the part of drive unit shown in Figure 1;

Fig. 3 only is the perspective view of contact maker closing actuator device;

Fig. 4 is the part perspective view of an execution mode of the connection between switching-in spring and the driving-belt;

Fig. 5 is the detailed view that obtains from Fig. 3, shows element of actuator and the connection between the driving-belt;

Fig. 6 shows the viewgraph of cross-section of an execution mode of the driving-belt with feature of the present invention;

Fig. 7 A to Fig. 7 C is the cutaway view of an execution mode of the guide wheel that uses in drive unit of the present invention;

Fig. 8 A to Fig. 8 C shows perspective view, top plan view and the end view of an example of the end connector that is particularly suitable for fixing driving-belt shown in Figure 6 respectively;

Fig. 9 A shows the longitdinal cross-section diagram of another example of the end connector that is particularly suitable for fixed conveyor band (it is the belt of being made by woven textile fabric), and Fig. 9 B and Fig. 9 C are its perspective views;

Fig. 9 D and Fig. 9 E are respectively the perspective view and the end views of another modification of the end connector shown in Fig. 9 A to Fig. 9 C.

Embodiment

Fig. 1 and Fig. 2 show an execution mode of drive unit of the present invention by example, and it has as it and disconnects and the spring of closing actuator.Certainly, should be appreciated that, utilize the drive unit of different actuators and different mechanical connectors not deviate from scope of the present invention.

This instantiation of drive unit of the present invention comprises the release mechanism MO that is used to disconnect contact maker, for example, is used for the cut-off breaker (not shown), and comprises the close mechanism MF that is used for closed contact maker, and these mechanisms are arranged in the housing 2 abreast.These two MO of mechanism are connected with main shaft 7 with MF, and main shaft 7 is connected with the movable part of contact maker itself.

Release mechanism MO comprises: be suitable for by being out of shape store mechanical energy and being suitable for responding the elastic device 6 that the order that disconnects contact maker discharges this energy; Be used to transmit the actuated element 8 of the power that applies by elastic device 6; And can be with the lever 10 of main shaft 7 rotations.In the example shown, elastic device 6 is the helical springs that remain in the preload condition.

Actuated element 8 is connected with an end of spring 6 at one end (invisible), be connected with lever 10 at its other end 8.2, make, first locking system (invisible) trip lever 10, just cause main shaft on the first given direction of rotation, to rotate via actuated element by the power that spring is applied on the lever, thereby cause disconnecting contact maker.

Close mechanism MF comprises: the elastic device 12 that is suitable for discharging by the order that distortion store mechanical energy and being suitable for responds closed contact maker this energy; Be used to transmit the actuated element 14 of the power that applies by elastic device 12; Be fixed to axle 19 cam 18 of (be called closed axle, it is parallel to main shaft); Cam cooperates with closed axle rotation and with lever 10.In the example shown, elastic device 12 is the helical springs that remain in the preload condition.

Actuated element 14 is connected with an end of spring 12 by an end 14.1, and be connected with disk 20 by the other end 14.2, this actuated element also clutch disk with closed axle rotation, make, the locking device 11 1 that is used for locking in make position discharges disk 20, and the power that is applied on disk 20 by spring just causes the cam rotation.By cooperating with lever 10, this causes main shaft 7 to rotate on second direction of rotation relative with first direction, thereby causes closed contact maker.

Disk 20 has tooth rim circle is arranged, and it is arranged as with the gear train 21 that is driven by the motor (not shown) cooperate, for the purpose of prestrain switching-in spring 12.

According to the present invention, actuated

element

8 and 14 is flexible belt or driving-belts, has flat basically shape, that is, the cross section of its thickness is less than the cross section of its width.

In one embodiment, for example, can form these driving-belts by woven or braiding textile fabric, for example, the fiber of polyethylene or aromatic polyamides, an example is Kevlar (registered trade mark).

In another embodiment, by example, driving-belt can comprise many strip metals cable, and wirerope for example, described many strip metals cable are parallel to and are provided with each other and its at least a portion length is embedded in the flexible material of thermoplastic-type, for example polyurethane.An example of the driving-belt of this type has been shown among Fig. 6, wherein, can have seen that the matrix 24 with cable 22 and flexible material is parallel to setting each other together.

Matrix 24 is fixed together cable, is convenient to hold driving-belt, and reduces the stress that the surface pressing from the cable produces.

Can think advantageously that matrix 24 covers the total length of cable, is not corroded to protect it.

Illustrate as following, provide guide wheel with the guiding driving-belt.In an improved execution mode, only matrix 24 is arranged on not around the zone of the cable that slides on the pulley; This of matrix lacks the flexibility that further is increased in the driving-belt in its bending area.The form of guide wheel (seeing Fig. 7 C) can be adapted to this modification.

Below be driving-belt and spring with other mechanical organ between the detailed description that is connected.

This describes based on close mechanism, but can be applied to release mechanism equally.

In Fig. 3, only can see close mechanism; Its part is depicted as longitudinally incision.

First end 14.1 of driving-belt 14 is attached to an end of spring 12 by jockey 26.

Jockey 26 is guaranteed the axis of spring and is attached to aligning between its part of driving-belt, to guarantee the axis transmission power between spring and driving-belt along spring.

Jockey comprises the frusto-conical member 28 that is arranged in the spring, and this frusto-conical member has first vertically the holding of bottom 30 of the member 28 that engages with the least significant end circle 32 of spring.Advantageously, bottom 30 is stairsteppings, and the cylindrical part 33 that comprises minor diameter more be so that can adapt to second spring, and second spring has minor diameter and is arranged in coaxially in first spring.

Frusto-conical member has passage 35 at its second vertical end place.

Jockey 26 also comprises and is used for the bar 34 that first end 14.1 with driving-belt 14 is connected with frusto-conical member 28, bar 34 penetrating vias 35.

In the example shown, make bar 34 form screw thread, and via an end 34.1 bar 34 is screwed in the end connector 36, end connector 36 has screwed hole 38 and is fixed to first end 14.1 of driving-belt 14.

First nut 40 is screwed on the screw rod 34 in the inside of frusto-conical member 28, and with the end wall adjacency of truncated cone.In the example shown, between the closing end of truncated cone and first nut 40, arrange packing ring 42.

The loosening purpose of accident in order to prevent nut 40 can advantageously provide stop nut device 44.

In the example shown, the stop nut device comprises pipe 46 and second nut 48, is installed between first nut 40 and second nut 48 to this pipe encircles rod 34 and compression.

Advantageously, pipe 46 length equals at least five times of diameter of screw 34.This length prevents that assembly from becoming and unclamps.

The minimum length of selector 34 makes, at first, can assemble and strain in advance from its resting position, secondly, allows mounting pipe 46 and stop nut 48 after the pretightning force of spring being adjusted to its right value.

As shown in Figure 4, can think advantageously that end connector 36 has the through hole 49 that leads to hole 38, so that can insert instrument, so that bar local deformation, thereby the mode that provides a kind of simple anti-stopping bar 34 to become and unclamp.Can design any other and be used for the device that anti-stopping bar 34 and end connector are separated from each other.

Second end 14.2 of driving-belt 14 is fixed on the pivotal part, and in this instantiation of close mechanism MF, this is a disk 20.Therefore, itself need not be moved with it and the mode that adapts to this rotation is arranged the connection between driving-belt 14 and the disk.

For this purpose, end 14.2 comprises end connector 50, and it has and the direction of motion quadrature of driving-belt and the hole 52 parallel with the rotation of disk 20, hole 52 is arranged as holds axle 54, and axle 54 is fixed to disk and is parallel to the disk axis.End connector 50 is freely pivoted on axle 54, and axle 54 limits rotation thus.

By column bolt (stud) 56 end connector 50 and axle 54 are fixed on the disk, as can in Fig. 2, seeing.

In another execution mode shown in Figure 5, in end connector 50 ', increase one degree of freedom, no longer this end connector is made one, but the connecting rod 62 that comprises first part 58 that is fixed on the driving-belt, is suitable for being installed in rotatably second part 60 on the axle 54, first part 58 and second part 60 are linked together, and the pivotal axis 63 that on second part 60, limits the rotation of connecting rod, the orthogonal axe in this axis and the hole 52 that holds axle 54.

This additional degrees of freedom provides more flexibility, its make load can be on the whole width of driving-belt balance, especially have the driving-belt that comprises many parallel cables, and it makes also load equally to disperse on all cables.Then, this makes it possible to increase the load that can be applied to driving-belt.

End connector

36 and 50 advantageously is formed from steel, to bear the mode of any impact that applies.

An example that the core of driving-belt is fixed to end connector is described below.

Advantageously, driving-belt is fixed on the mode of end connector fully reliably guaranteeing, the cable of driving-belt is clamped in

end connector

36 and 50.

In Fig. 4 and Fig. 8 A to Fig. 8 C, can see one type attachment, it is suitable for comprising the driving-belt of many parallel cables particularly well.End connector 36 has a plurality of blind holes 64 in its end relative with the end that forms hole 38, and each blind hole 64 is held an end of cable, and, blind hole is kept tight in end connector.The axis in hole 64 is included in the plane of the axis that comprises hole 38 equally.

Hole 64 is parallel to each other, and each in these holes formed housing to the end of cable.With and driving-belt in cable between the corresponding mode of relative distance these holes relative to each other are set.

Fig. 8 B shows the end connector that does not have cable.

Can advantageously the cut sth. askew openend and the insertion end in hole 64 are so that insert in the hole cable easilier.

By the distortion in the hole that causes by punching press, the end of cable is fixed in the hole, this causes and will closely clamp cable.

Make the diameter in each hole 64 bigger slightly than the diameter of cable.

This distortion can be advantageously discontinuous, and carry out along the hole.On the face 69 of the end connector on the plane that is parallel to the axis that comprises the hole, apply power, and apply, and on the whole surface of end connector, do not apply along the axis in hole.Therefore, the material of end connector (for example being steel) is distortion around the end of cable, and at least a portion in the space of the sky between the metal wire of the inner surface of filler opening and composition cable.

Fig. 8 A shows warp tool DF, and it does not have the plane, is formed with the surface of stretching out finger 65 but have, and described finger is parallel to each other and all be parallel to the axis in hole 64 and extend.

In addition, advantageously, the amount of the clamping that the clamping ratio of realizing in the zone of the bottom in hole 64a is realized in the zone of the openend 64b in hole is big; This has improved fixing.

As seeing in Fig. 8 C, for example, this can realize that with respect to the plane inclination that is applied with deformation force for example, the inclination angle is 1.5 ° by making the face 69 that is applied with deformation force; Perhaps, this can realize by making tool tilt, can realize distortion with described instrument.

For example, the impression that produces in end connector is 0.5 times a grade of the diameter of cable.

In carrying out assembly manipulation, be particularly advantageous being provided in hole 64, keeping the device of the end of cable before the deforming step to hole itself, thus the possibility of avoiding a cable in the process of the step that makes the end connector distortion, to break away from or move.

Shown in Fig. 8 A to Fig. 8 C, this realizes by forming hole 70, hole 70 and hole 64 quadratures, and extend radially in each hole 64.When cable was arranged in hole 64, the dowel 72 that will have a diameter identical with the diameter of transverse holes 70 was introduced in the holes and cable is out of shape a little, and this makes it possible in advance cable and end connector are assembled together.For example, dowel 72 can penetrate about 0.3 millimeter (mm) in the hole 64.

In addition, pin 72 has improved the tensile strength of the joint between cable 22 and the end connector 36.

Can come assembled in advance by adhesive, wherein, preferably partly apply adhesive, for example, just in the 64a of the bottom in hole 64, apply.

By this assembly method, the intensity in the zone of clamping region equals the intensity of driving-belt itself at least.

Can arrange sealing, in the zone of its clamping region, not be corroded with the protection cable, for example, by applying polyurethane slurry (paste) on the side of matrix 24 and on the side of end connector 36.Can arrange that also matrix 24 directly is clamped in the housing (not shown), housing is formed in the end connector, is positioned at the upstream in hole 64 and limits the slit.

In Fig. 9 A to Fig. 9 C, can see the fixing example of the driving-belt of making by textile fabric.

As can in Fig. 9 A to Fig. 9 C, seeing, with the end of driving-belt be wrapped in two axles in the end connector around.

End connector 36 ' comprises the stirrup 74 with two parallel side walls 76, with the diapire 78 of bearing holes 38 ' described sidewall 76 is linked together, and is screwed into the screw rod 34 of an element that is suitable for being fixed to drive unit in hole 38 '.End connector 36 ' has parallel to each other and first 80 and second 82 of being formed by short pin, and the end of each is fixed in the sidewall 76, and second is arranged between diapire 78 and first 80.

Below be how driving-belt to be wrapped in

axle

80 and 82 description on every side.The end of driving-belt is folded into two partially overlaps, and seal the free end of (hemmed) driving-belt, for example by glueing joint or sewing up, to form the mode of closed loop 90.This driving-belt holds first, then two transmission tapes are put together, and, along first by and before occurring from end connector, be wrapped in around second.

After being wrapped in driving-belt on the axle, or before, form the circle ring, therefore, make first to be movably, make to be inserted in the circle ring.

The plane identical, be applied to the tensile stress that acts on the direction relative on the end connector 36 ' with the power on the end connector 36 ' of being applied to by driving-belt with the plane of the end that holds the circle ring that occurs from end connector 36 '.

Fig. 9 B and Fig. 9 C are the perspective views of the end connector of Fig. 9 A, do not have driving-belt.

In this example, sidewall 76 has the hole, and vertical end of axle is assemblied in this hole, and each axle has shoulder 88 at first end, and has screwed hole 89 at second end, is used for the laterally bolt 91 of fixed axis so that can assemble.In the example shown, bolt has hexagonal head.

Fig. 9 D shows end connector 36 ", it is the improved form of end connector 36 '.This end connector 36 " be with the essential distinction of end connector 36 ', driving-belt is fixed to end connector 36 ".

In this form, end connector 36 " comprise and be used for fixing first board 100 of driving-belt on end connector, with basically with first board, 100 quadratures and make it possible to end connector 36 " second board 102 that is connected with the suitable element of drive unit.

In this example, second board 102 has hole (invisible), and the screw rod 34 that is fixed to the suitable element of drive unit is screwed in the hole.

The mode of axis that comprises screw rod 34 with first board with first board 100 with respect to second board, 102 orientations.

In the example shown, advantageously end connector is made one by the press forming plate slab; Shaped portion 104 is connected first board 100 with second board; Shaped portion 104 has angle shape, so that second board 102 is offset with respect to first board: the axis of screw rod 34 is arranged in the plane of first board 100, as can in Fig. 9 E, seeing, wherein, end connector 36 has been shown in end view and in the part longitudinal cross-section ".

First board 100 comprise be used for with end connector 36 ' on immobile phase like mode by driving-belt being wound on the end connector and driving-belt is fixed on device on the end connector.

For this purpose, first board 100 has three slotted holes 108,110 and 112, each hole all with the axis of the orthogonal axe of driving-belt on, separate these three holes by

rod element

114 and 116, driving-belt 14 is wound in around the described rod element.

For example, cut out these holes by stamping tool.

The winding of driving-belt is identical with the winding among Fig. 9 A, and the function of rod element 114 is identical with axle 80, and the function of rod element 116 is identical with axle 82.Yet, advantageously, around driving-belt being wrapped in

rod element

114 and 116 after, driving-belt penetrates in the hole 108 once more, moves below first board 100 therefrom.

End connector 36 " manufacturing very simple because only need a press forming and punch steps.

Below only described an end of the driving-belt that is fixed on the end connector, still, the other end of driving-belt certainly assembles the end connector of same type.

Fig. 2 shows the reinforcement lever 66 that is fixed on the disk 20, is fixed on the lever 66 by second end 14.2 of end connector 50 with driving-belt 14.Lever 66 is helped the transmission of power by the flexibility that reduces disk 20.

As mentioned above, by guide wheel 68 guiding driving-belts, to change the direction of driving-belt.

Calculate the least radius of guide wheel according to the diameter of the driving-belt of its guiding.Now, by the present invention, the driving-belt for comprising many cables (wherein, the diameter the when diameter of every cable ratio only has a hawser is little) can use the more pulley of minor diameter.Therefore, can reduce the overall dimensions of drive unit.

Fig. 7 A to Fig. 7 C shows some execution modes of these pulleys.Pulley is installed on the rolling bearing 92.

The surface 94 of the pulley that contacts with driving-belt can be various types of.Shown in Fig. 7 A, it can be level and smooth, is formed by the cylinder with the circular cross section that is joined in the side by two flipper guides 96.

The surface is the form that expands of the heart therein basically, and is identical with the surface 94 ' among Fig. 7 B, and driving-belt is had improved guiding.

In Fig. 7 C, surface 94 " have the annular groove 98 with the axis coaxle of pulley, each in these grooves is suitable for holding the part of cable in the part of the driving-belt that exposes cable.

Be connected be connected (the seeing Fig. 1 and Fig. 2) that identical mode obtains driving-belt 8 and lever 10 with end with driving-belt 14 and disk 20, that is, and by being installed to be around the end connector 77 of the pivotal pin rotation that is parallel to main shaft.In this instantiation, this pivotal pin is installed between two plates 81, described plate 81 is parts of lever 10.

Being connected between the connection of driving-belt 8 and spring 6 and driving-belt 14 and the spring 12 is similar,, connects be in the same place (Fig. 3) with screw rod by frusto-conical member that is.

Should be expressly understood, have at two ends different structure two end connectors driving-belt within the scope of the invention.

Below be by the explanation of example to the operation of above-mentioned drive unit.

Motor drives via gear train 21 20 rotations of tooth disk, and therefore, driving shaft 54 is around closed axle 19 rotations.Second end 14.2 of this mobile in one direction driving-belt 14, feasible also first end 14.1 of mobile driving-belt is with compression spring 12.

First locking device 11 is arranged as, when the level of the energy in being stored in spring 12 is enough, prevents the rotation of disk 20, the level of described energy is corresponding through rotatablely moving of several years on top dead-centre (top dead center) with disk.

When sending the order of closed contact maker, first locking device 11 discharges disk 20, uses power driver plate 20 rotations that applied via driving-belt 14 by spring 12, thereby drives closed axle 19 and cam 18.Then, cam 18 contacts with lever 10, and lever 10 pivots with rotary main shaft 7 on second direction of rotation, and this causes the motor element (contact) of mobile contact maker, thus closed contact maker.When arriving make position by the contact maker contact, second locking device is locked lever 10.

Simultaneously, the motion of lever 10 applies pulling force on driving-belt 8, and this causes compressing tripping spring 6.

Motor operation then is to reload switching-in spring 12, as mentioned above.

When sending the order that disconnects contact maker, the second locking device trip lever 10 use power activation lever 10 rotations that applied via driving-belt 8 by spring 6, thereby rotary main shaft 7 also disconnects contact maker thus on first direction of rotation.

With the of the present invention high pressure drive unit of driving-belt as actuated element, can operation reliably in the sufficiently long time cycle.

In this, drive unit of the present invention has work without any need for lubricated advantage, and making does not need it is safeguarded, and has eliminated the danger of the wearing and tearing that caused by lack of lubrication.

In addition, actuated element is not easy corrosion.

The quality of the normally used roller conveyer of mass ratio of actuated element is little, and therefore, the amount of the energy that disconnection and closed procedure are required is littler.In addition, owing to reduced moving-mass, disconnection and closing time can be reduced about 3ms to 4ms.

In addition, the overall dimensions of driving-belt is littler than the overall dimensions of roller conveyer, makes that the overall dimensions of drive unit itself can be littler.

At last, the original cost of these driving-belt drive disk assemblies is more much lower than normally used, this feasible original cost that reduces drive unit itself, and, use the drive unit of the type of two force transfer element to make this effect more obvious.

Carry out above description with reference to an example, in this example, flexible driving band is used for the power transmission between the lever of actuator and controlling organization.Yet, should be expressly understood, in the power transmission chain between the current collector of actuator (for example, spring) and high pressure switchgear, Anywhere, can use aforesaid driving-belt, in described switchgear, driving-belt is applied tension force.For example, aforesaid driving-belt is used in power transmission between controlling organization and the circuit breaker, in the zone of circuit breaker tripping spring is set.

Claims

1. the drive unit that is used for the high and medium voltage switchgear, the actuator (6 that comprises the contact maker that at least one is used for the described switchgear of cut-off/close, 12), be suitable for the mechanism and the force transfer element (8 that is connected two zones of the movable part of mobile described contact maker, 14), power must be transmitted between these two zones, described force transfer element is formed by driving-belt, described driving-belt comprise a plurality of be intended to connection power the flexible stave in described two zones that must transmit betwixt and the flexible transverse element that at least one extends between described stave.

2. the drive unit that is used for the high and medium voltage switchgear according to claim 1, wherein, described flexible driving band is disposed between described actuator (6,12) and the described mechanism.

3. drive unit according to claim 1 and 2, wherein, described driving-belt (8,14) have and be used for end connector (36,36 ' that this driving-belt is connected with described mechanism at its two ends and described actuator (6,12), 36 "; 50,50 '), each end connector has the fastening end of an end that is used to be fastened to driving-belt and is used for that connector is fastened to the bar that extends on the travel direction of driving-belt or is fastened to fastening end with the pin of described motion quadrature.

4. according to each described drive unit in the claim 1 to 3, wherein, described driving-belt (8,14) comprises many cables, and described many cables are set parallel to each other and their at least a portion length is embedded in the flexible substrate (24).

5. drive unit according to claim 4, wherein, described matrix (24) extends on most of length of described cable continuously.

6. according to claim 4 or 5 described drive units, wherein, described matrix (24) is made by thermoplastic, for example polyethylene.

7. according to each described drive unit in the claim 4 that combines with claim 3,5 and 6, wherein, described cable is clamped in the described end connector (36,36 ', 36 ", 50,50 ') by punching press.

8. drive unit according to claim 7, wherein, described matrix (24) is clamped in the described end connector (36,50,50 ').

9. according to claim 7 or 8 described drive units, wherein, described end connector (36) forms porose (64), the axis in described hole is directed on the travel direction of driving-belt, each hole (64) holds the free end of described cable, and, wherein, every cable is held in place by punching press.

10. drive unit according to claim 9, wherein, each end connector (36) has and the orthogonal axe of described hole (64) and the transverse holes (70) of extending with the plane parallel ground of the axis that comprises the described hole (64) that is used for described cable, pin (72) is introduced in the described transverse holes (70), the diameter of described pin equals the diameter of described transverse holes (70), be clamped in end between the periphery and described pin (72) of respective aperture (64), thereby providing pre-assembled before the final assembling by punching press with every cable.

11. drive unit according to claim 10, wherein, described end connector (36) has the face (69) with respect to the plane inclination of the axis that comprises described hole (64), make confining force on the cable that obtains by punching press on a side identical than on a side of the open end of described hole (64) (64b) with the closing end (64a) of described hole (64) greatly, for example, described angle with respect to 1.5 ° of the plane inclinations of the axis that comprises described hole (64).

12. according to each described drive unit in the claim 1,2 and 3, wherein, described driving-belt (8,14) is made by textile fabric woven or braiding.

13. drive unit according to claim 12, wherein, described textile fabric is poly, polyester or aromatic polyamides.

14. according to claim 12 that combines with claim 3 or 13 described drive units, wherein, each end connector (36,36 ') comprise parallel to each other and with first (80 of the travel direction quadrature of described driving-belt, 114) and second (82,116), described two axles (80,82,114,116) be fixed to the tightening member (78 of described end connector, 102), to be fastened to described mechanism or to be fastened to described actuator, every end of described driving-belt is around end connector (36 ', 36 " described axle (80; 114; 82; 116)) twines; described second (82,116) are set at the described tightening member (78 of described end connector (36 ', 36 "), 102) and described first (80,114) between, the end of folding described driving-belt also is fixed on the described end connector with the mode that forms closed loop (90) end with described driving-belt, and described ring (90) has inner face and outside, described ring (90) is so that its inner surface and first (80,114) Jie Chu mode is passed through on every side first (80,114), and so that its outer surface and second (82,116) Jie Chu mode is at second (82,116) pass through on every side, the ring portion of passing through on every side in described second (82,116) comprises the driving-belt of two overlapping thickness, and, the end of the ring (90) that is limited by the free end of driving-belt passes described end connector (36 ', 36 ") by extending along described first (80,114).

15. according to each described drive unit in the aforesaid right requirement, wherein, described at least one actuator comprises spring (6,12), and described mechanism comprises lever (10,66), described lever is fixed on the axle (7,19) that is suitable for being connected with the movable part of contact maker rotatably.

16. drive unit according to claim 15, further comprise being used for jockey (26) that described driving-belt (14) and described spring (12) are linked together, transmit between described driving-belt (14) and described spring (12) along the axis of described spring (12) to exert all one's strength.

17. drive unit according to claim 16, wherein, the jockey (26) that described driving-belt (14) and described spring (12) are linked together comprises the frusto-conical member (28) that is installed in the spring (12), and described frusto-conical member engages with the end turns (32) of spring (12) by the bottom (30) of frusto-conical member, described frusto-conical member (28) is connected with end connector (36) via the screw rod (34) that is screwed in the end connector (36), by first nut (40) described screw rod (34) is fixed to described frusto-conical member (28).

18. drive unit according to claim 17 further comprises the stop nut device, described stop nut device comprises pipe (46) and second nut (48), and described pipe (46) is clamped between described first nut (40) and second nut (48).

19. drive unit according to claim 18, wherein, the length of described pipe (46) equals at least five times of diameter of described screw rod (34).

20. according to each described drive unit in the claim 15 to 19, further comprise jockey, described jockey is used for described driving-belt (8,14) and described lever (10,66) link together and pivot around axis with the parallel axes of described axle (7,19).

21. drive unit according to claim 20, wherein, described lever (10,66) has and is parallel to described axle (7, the projecting shaft of axis 19), described end connector (50,50 ') has the hole (52) with the travel direction quadrature of described driving-belt (8,14), described hole (52) holds described projecting shaft, and described end connector (50,50 ') can be around described projecting shaft rotation.

22. according to claim 20 or 21 described drive units, wherein, described end connector comprises two by the hinged each other part (58,60) of connecting rod (62), the surperficial quadrature of swivel pin (63) and described driving-belt (8,14).

23. according to each described drive unit in the claim 15 to 22, wherein, described actuator is that contact maker disconnects actuator, and described lever (10) is to disconnect lever, and described axle (7) is a main shaft, and described drive unit further has second actuator that constitutes the contact maker closing actuator.

24. drive unit according to claim 23, wherein, closing actuator comprises the spring (12) that is connected with closed lever (66) by described driving-belt (14), described closed lever (66) is fixed on the closed axle (19) that is parallel to described main shaft (7), described disconnection lever is fixed on the described main shaft (7), described closed lever (66) is fixed to cam (18) to rotate with cam, described cam is suitable for working on described disconnection lever (10), to cause the contact maker closure.

25. drive unit according to claim 24, further comprise be used to drive described closed lever (66) rotation tooth driving wheel (20) arranged, described have tooth driving wheel (20) and meshed by motor-driven gear train (21), and spring (12) is under the load.

A 26. high pressure or medium voltage switchgear equipment that has according to each described drive unit in the aforesaid right requirement.

27. one kind make according to claim 3 and 4 claims 1 to 25 that combine in the method for each described drive unit, comprise the step that driving-belt and end connector are assembled together, driving-belt comprises many cables, parallel to each other and their at least a portion length of described many cables is embedded in the flexible substrate (24), the free end of described cable is not embedded in the matrix, and, end connector forms porose, the quantity in described hole is identical with the quantity of cable, said method comprising the steps of:

One end of every cable is introduced corresponding hole; And

28. method according to claim 27 further is included in the final assembling step of pre-assembled cable in described hole before.

29. according to claim 27 or 28 described methods, further comprise the step that the joint between driving-belt and the end connector is applied sealing device, for example by applying the slurry of polyurethane type.