CN202711965U

CN202711965U - Contact means for stage selector of staged transformer

Info

Publication number: CN202711965U
Application number: CN 201220174572
Authority: CN
Inventors: 罗夫·劳特瓦德
Original assignee: Maschinenfabrik Reinhausen GmbH
Current assignee: Maschinenfabrik Reinhausen GmbH
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2013-01-30
Anticipated expiration: 2022-04-23

Abstract

The utility model relates to a contact means for a stage selector of a staged transformer, which is used for connecting a contact ring annularly arranged around a selector column and fixed sub contact points arranged in a concentric circle. Thus, contact sheets are flexibly arranged inside a contact frame. The contact sheets are mirrored and oppositely arranged, such that the contact sheets can respectively surround the contact points to be connected via the end parts. The contact frame is also flexibly supported between the contact bridge shells of two components. Through dual flexibly supporting the contact sheets, height tolerances of the sub contact points between the contact sheets and the contact ring can be particularly balanced in a simple way.

Description

The contact device that is used for the step-selector of staged transformer

Technical field

The utility model relates to a kind of contact device of the step-selector for staged transformer, be used for contact ring with conglobate minute contact point be set couple together.

Background technology

By the known this contact device of DE234115A.In this contact device, be provided with contact bridge at slip ring and fixing dividing between the contact point, this slip ring medially be arranged on axis of movement around, this minute, contact point was arranged on around it circlewise, this contact bridge has the contact thin slice that two arrangement of mirrors picture ground are put relatively, be arranged in the inside contact frame of retainer shape its elastic bearing, and respectively from above or below by spring force pressure at slip ring or with this on fixing minute contact point to be connected, in order to realize the closing of contact.At this, inner contact frame can raise in the inside that is used for surrounding its external contact axle housing body (it is fixed on the switch sections), and guides by bolt, and this bolt and thin slice width are vertically passed inner contact frame.

Draw the radial spacing between slip ring and minute contact point from the quantity of minute contact point and required voltage, shunting switch should be with this voltage-drop loading.Be necessary that contact bridge is designed to different length on the one hand, the contact bridge housing structurally differently designs according to the voltage of expectation on the other hand.

This a large amount of different part do not expected for the long-pending art formula system that realizes shunting switch will inevitably occur.

In addition, known contact device deficiently balance divides during fabrication inevitable height tolerance of contact point, because the possible deviation of single contact thin slice must be very restricted, avoiding thin slice in the contact frame medium dip, and block when therefore avoiding single sheet on twining minute contact point.

What inner contact frame do not have perpendicular to the mobility of its swinging plane at this and changes in the contact bridge housing because inner contact frame inevitably in the friction of bolt (this inner contact frame of this bolt guide) appearance this tolerance of balance deficiently.At slip ring or when height tolerance appearred in a contact point in fixing minute, inner contact frame always tries hard to its oblique adjusting is namely occupied the position different from horizontal line, but is not that executive level is passed; But its in this known contact structures in the medium dip of contact bridge housing, and finally block step-selector.

The utility model content

Therefore the purpose of this utility model is, improve the contact device that is used for step-selector, so that be complementary from different current loading in a wider context with minimum structure element, and guarantee that balance is divided contact point each other and the height tolerance aspect contact ring in the situation that does not affect performance of handoffs.

This purpose is achieved according to measure of the present utility model.

The utility model provides a kind of contact device of the step-selector in staged transformer, being used for that annular is arranged on selector post contact ring and relative set on every side couples together at the fixing minute contact point of concentric circles, wherein contact frame comprises the tactile thin slice of two windings, its mutual mirror image ground is put relatively, and be bearing in wherein by contact spring actively and flexiblely, and be pressed on the one hand on the slip ring from below and top with its end, be pressed on the other hand on to be attached thereto each minute contact point, and contact frame is guided in the contact bridge framework, described contact frame rigidly with can link to each other round the driving tube of selector post rotation, it is characterized in that, affiliated contact frame has the elastic shaft bearing, be used for holding the contact spring that abuts in described contact thin slice place, and self guides movably in the contact bridge housing with omnibearing gap by the framework spring and is surrounded by it, and wherein said contact bridge housing is divided into can be by one or more spacer bolts continuous perpendicular to the radially width ground of described contact thin slice, inner contact bridge housing and outside contact bridge housing.

Alternatively, the framework spring of the contact spring of below and/or below by slide block with respect to the spring of top pretension additionally.

By the utility model possible be, only have the contact thin slice on its total length must and selector post and fixing minute contact point between radial spacing be complementary, wherein to contact at all with size all be the same in the thin slice in the position of contact spring accommodation section, irrelevant with length, always can be used as the member that guides and keep in touch thin slice with identical contact frame, this contact frame is advantageously made by sheet material with simple mode and method, particularly because can not propose to it requirement of electronics aspect, because it is being shielded aspect the voltage by the contact bridge housing of two parts.Size is for example made and set like this to the contact bridge housing of two parts by foundry goods, namely it can be used as electrode and comes usefulness, and shields whole contact device fully.

In addition, by the framework in the contact bridge housing of the contact thin slice in the dual spring ground guiding frame and two parts, the utility model can also be reliably and the difference of the larger level between balance contact ring and the single minute contact point without problems.

Description of drawings

The below should describe the utility model in an embodiment in detail.Wherein:

Fig. 1 there is shown according to contact device of the present utility model at vertical section;

Fig. 2 shows identical device with another section.

Embodiment

In this class step-selector of staged transformer, selector post 1 is positioned at the inside of insulating material cylinder 3 with contact ring (slip ring) 2, this contact ring medially is arranged on around this selector post for this reason, and this insulating material cylinder 3 has the fixing minute contact point 4 that annular arranges at least one plane.

Top contact thin slice 5.1 and below contact thin slice 5.2 had both abutted in contact ring 2 places in both sides, also abut in minute contact point 4 places to be attached thereto respectively.At this, realize contact by contact spring 7, this contact spring is embedded in the contact spring accommodation section 6 of above and below contact thin slice 5.1 and 5.2, and in the elastic shaft bearing 9 of the contact frame 8 around being bearing in.Contact frame 8 is comprised of the sheet structure with two fixing points 10 at this, and this sheet structure is used for guiding above and below contact thin slice 5.1 and 5.2 also among its motion it to be fixed simultaneously.The position of contact spring groove 6 all is the same with spacing in the thin slice 5.1 and 5.2 contacting of all application, and is irrelevant with its length, thereby always can guide with identical contact frame and fix.Also place a framework spring 12 in the centre or in the situation of a plurality of this framework springs, contact frame 8 is surrounded by the contact bridge housing 14 that separates with omnibearing gap again, this contact bridge housing by inside, consist of towards the housing parts 14.1 of selector post 1 and housing parts 14.2 outside, that point to minute contact point 4, wherein housing parts 14.1 and 14.2 is connected with each other by one or more spacer bolts 16.

Framework spring 12 is embedded into respectively in the spring guide portion 13 of contact frame 8, and is bearing on the other hand in the groove 15 of corresponding housing parts 14.1 or 14.2.A plurality of framework springs 12 also can be arranged on the place, side, above and below between contact frame 8 and housing parts separately 14.1 or 14.2, wherein turned out to be advantageously with the deadweight that contacts thin slice 5.1 and 5.2 for balance contact frame 8 in this case, the place uses respectively the larger spring of elastic force in the bottom side, and/or slide block 11 is arranged in the lower grooves 15 of contact bridge housing 14.

Come the deadweight of balance contact thin slice 5 or contact frame 8 by these measures, thereby exist vertically the deflection path that is roughly the same that reaches down up, be used for the balance tolerance.

At this advantageously, framework spring 12 has higher elastic force with respect to contact spring 7.

Claims

1. one kind in the contact device of the step-selector of staged transformer, being used for that annular is arranged on selector post contact ring (2) on every side couples together with the fixing minute contact point of relative set at concentric circles, wherein contact frame comprises the tactile thin slice of two windings, its mutual mirror image ground is put relatively, and be bearing in wherein by contact spring actively and flexiblely, and be pressed on the one hand on the slip ring from below and top with its end, be pressed on the other hand on to be attached thereto each minute contact point, and contact frame is guided in the contact bridge framework, described contact frame rigidly with can link to each other round the driving tube of selector post rotation

It is characterized in that, affiliated contact frame (8) has elastic shaft bearing (9), be used for holding and abut in the contact spring (7) that described contact thin slice (5) is located, and self guides in contact bridge housing (14) and by its encirclement with omnibearing gap movably by framework spring (12), wherein said contact bridge housing (14) perpendicular to the radially width of described contact thin slice (5) be divided into and can link to each other by one or more spacer bolts (16), inner contact bridge housing (14.1) and outside contact bridge housing (14.2).

2. contact device according to claim 1 is characterized in that, the contact spring (7) of below and/or the framework spring (12) of below are by slide block (11; 17) with respect to the spring of top pretension additionally.