Background technology
High-voltage switch gear all needs drive mechanism to drive moving contact, realize high-voltage switch gear point, closing operation.Due to the danger of high-voltage fence, electrical network to high-voltage switch gear point, combined floodgate reliability proposes rigors, otherwise will cause lethal effect.In order to meet the demands, often volume is large, complex structure, cost are high for the drive mechanism of high-voltage switch gear.For circuit breaker, the moving contact of existing circuit breaker is all driven by corresponding pull bar, in the process of work, moving contact is driven to carry out divide-shut brake by the axially reciprocating of pull bar, and the reciprocating motion of pull bar inherently needs to occupy more space, in addition the reciprocating driving mechanism of pull bar is ordered about, in prior art, the reciprocating motion of switch lever is provided by corresponding crank arm mechanism often, these parts of such as crank arm mechanism increase the volume of high-voltage switch gear equally, add the production cost of high-voltage switch gear.
Summary of the invention
The purpose of this utility model is to provide a kind of movable contact of high-voltage switch mechanism, to solve the bulky problem of existing high-voltage switch gear.
Meanwhile, the purpose of this utility model is also to provide the high-voltage switch gear using above-mentioned movable contact of high-voltage switch mechanism.
In order to solve the problem, movable contact of high-voltage switch mechanism is by the following technical solutions: movable contact of high-voltage switch mechanism, comprising with front end is the moving contact of inserted terminal, moving contact leads vertically and is assemblied on a track segment, in addition, be provided with axially through through hole in moving contact, in described through hole or one end place of described through hole is fixedly equipped with nut, be equipped with leading screw in nut, the front end of leading screw extends in the through hole of moving contact.
Nut is equipped with the slide block extended radially outward, moving contact is led with track segment by described slide block and coordinates.
Described leading screw is connected with insulating bar by rear end, and insulating bar rotates and is assemblied on a supporting base.
The outline of described nut is multidiameter shape, and it comprises the path section being positioned at front end and the large footpath section being positioned at rear end, and forming surface step surface forwards between the section of large and small footpath, the rear end face of this step surface and moving contact is fitted.
The path section of nut is inserted in the through hole of moving contact, the outer peripheral face of large footpath section does not radially protrude from moving contact.
High-voltage switch gear is by the following technical solutions: high-voltage switch gear, comprise dynamic contact mechanism, it is the moving contact of inserted terminal that dynamic contact mechanism comprises with front end, moving contact leads vertically and is assemblied on a track segment, in addition, be provided with axially through through hole in moving contact, in described through hole or one end place of described through hole is fixedly equipped with nut, be equipped with leading screw in nut, the front end of leading screw extends in the through hole of moving contact.
Nut is equipped with the slide block extended radially outward, moving contact is led with track segment by described slide block and coordinates.
Described leading screw is connected with insulating bar by rear end, and insulating bar rotates and is assemblied on a supporting base.
The outline of described nut is multidiameter shape, and it comprises the path section being positioned at front end and the large footpath section being positioned at rear end, and forming surface step surface forwards between the section of large and small footpath, the rear end face of this step surface and moving contact is fitted.
The path section of nut is inserted in the through hole of moving contact, the outer peripheral face of large footpath section does not radially protrude from moving contact.
Moving contact due to movable contact of high-voltage switch mechanism of the present utility model leads vertically and is assemblied on a track segment, in addition, axially through through hole is provided with in moving contact, and in through hole or one end place of described through hole is fixedly equipped with nut, leading screw is equipped with in nut, the front end of leading screw extends in the through hole of moving contact, nut and leading screw in substance form screw-nut body, and moving contact is fixed together with nut, therefore, moving contact is being ordered about vertically in reciprocating process by leading screw, leading screw itself is without axial motion, thus the space that can reduce needed for leading screw rear portion, and then the bulky problem of existing high-voltage switch gear can be solved.
Further, the slide block not only guiding that can realize between moving contact with track segment coordinates, and can realize spin-ended cooperation therebetween, guiding and spin-ended parts is integrated, the structure of dynamic contact mechanism can be simplified further, reduce the volume of high-voltage switch gear; The setting of insulating bar is the mutual insulating in order to ensure between moving contact and the external world, ensures the security performance of dynamic contact mechanism; It is to ensure that moving contact is can not skid by opposing nut by when nut thrust that the step surface of nut and the rear end face of moving contact are fitted; It is to prevent it from interferenceing with other parts such as track segments that the outer peripheral face of the large footpath section of nut does not radially protrude from moving contact.
Embodiment
The embodiment of movable contact of high-voltage switch mechanism, as shown in Figure 1, this movable contact of high-voltage switch mechanism comprises moving contact 1, track segment 2 and screw-nut body.
Moving contact 1 take front end as inserted terminal, and be wherein provided with through hole through vertically, track segment 2 is the track segment of moving contact 1, and it is specifically as follows cartridge type, rail mounted etc., as long as can play the effect of the moving contact 1 of guiding assembling vertically.
The nut 4 of screw-nut body is fixedly assemblied on moving contact 1, in the present embodiment, nut 4 is fixedly assemblied in the rear end of moving contact 1, the outline of nut 4 is multidiameter shape, it comprises the path section being positioned at front end and the large footpath section being positioned at rear end, forming surface step surface forwards between the section of large and small footpath, and the rear end face of this step surface and moving contact 1 is fitted, in the present embodiment, the outline of the large footpath section of nut 4 is concordant with the outer peripheral face of moving contact 1.In addition, nut 4 is also equipped with the slide block 5 extended radially outward, moving contact 1 is led with track segment 2 by described slide block 5 and coordinates.Leading screw 3 front end of screw-nut body extends in the through hole of moving contact 1, by the rotation of leading screw 3, can order about nut 4 with moving contact 1 reciprocating motion vertically.In order to realize power input, leading screw 3 is connected with insulating bar 6 by rear end, and insulating bar 6 is rotated by bearing 7 and is assemblied on a supporting base.
In addition, need special it is emphasized that, the helical angle of screw-nut body is not more than the Self-locking angle of the two, before and after nut applies, active force can not drive screw turns, therefore when the operating mechanism of high-voltage switch gear breaks down, movable contact of high-voltage switch can not because of Action of Gravity Field automatic closing or separating brake, can avoid thus to maintainer bring life danger or cause other accident.
In other embodiment of movable contact of high-voltage switch mechanism, the outer peripheral face of the large footpath section of nut does not radially protrude from moving contact and all can; Guiding between nut with track segment coordinates and can also adopt other modes such as directive wheel; Nut can also be the position between the two ends of the through hole being assemblied in moving contact.
The embodiment of high-voltage switch gear, this high-voltage switch gear comprises dynamic contact mechanism, and as shown in Figure 1, identical with the structure of the embodiment of above-mentioned dynamic contact mechanism, it will not go into details herein for the structure of dynamic contact mechanism.