CN85108985A

CN85108985A - The drawout switchgear apparatus that has extensible track

Info

Publication number: CN85108985A
Application number: CN198585108985A
Authority: CN
Inventors: 夫里德·伯尔德
Original assignee: Westinghouse Electric Corp
Current assignee: CBS Corp
Priority date: 1984-12-12
Filing date: 1985-12-09
Publication date: 1986-08-06
Also published as: IN162590B; JPH0785374B2; JPS61140016A; BE903835A

Abstract

A kind of power distribution equipment unit that is movably arranged on isolation ward inside.It is supported on the static guide rail when the power distribution equipment unit is in isolation ward inside, and it is supported by an extensible track when power distribution equipment is moved out of isolation ward.Guide rail can automatically move into isolation ward together or shifts out from isolation ward with the power distribution equipment unit.

Description

The drawout switchgear apparatus that has extensible track

The field that the present invention relates to is a drawout switchgear apparatus, more specifically says so to have extensible track, and extensible track can pass in and out the power distribution equipment of power distribution equipment isolation ward with this power distribution equipment.

The circuit breaker of metal enclosed structure or metal cover structure is one and is deposited in another top, and the circuit breaker of this form is drawing and pulling type normally.A kind of design of drawing and pulling type structure is that circuit breaker is contained within the compartment that has a Qianmen.This must be able to be opened so that can allow the extensible track that is contained in the compartment come in and go out.A kind of modification of this design be make highlight in the hole of a part in the Qianmen of circuit breaker or in the Qianmen, comprise one movably dull and stereotyped so that path is provided for the anterior control end of circuit breaker.But must open the Qianmen in these two kinds of designs could running circuit breaker.Guide rail in one embodiment is very simple, and this is because only just bear load in orbit when circuit breaker is come out by pull by whole open position, shown in the specification of this situation such as U.S. Patent No. 3,483,338.

If compartment does not have the Qianmen, the approach of then protecting the operator is exactly to realize by the circuit breaker that the front end flat board is housed.This flat board has blocked the hole of compartment on circuit breaker is coupled the time fully.Obviously, according to a kind of like this structure, extensible track is contained in after the flat board, and extensible track neither highlights by the front end flat board, also can not make the people meet it.If there is not the guide supporting circuit breaker, circuit breaker just can not pull out.The way that addresses this problem is that circuit breaker is placed on the extensible track.But because the intensity of guide rail will enough greatly just can sustain short-circuit force, so this way cost of dealing with problems is very high.

According to the present invention, for the drawout switchgear apparatus of current consuming apparatus power distribution electric power comprises:

The isolation ward of front opening;

Can move into, shift out the breaker unit of isolation ward;

Supported stiff end head member in isolation ward;

Be contained on the breaker unit, and can be at the movable end head member that moves together in company with isolation ward between position and the open position that is coupled of stiff end head member;

Be used to support the motion of breaker unit and comprise the guiding part at a distance of the guide rail of certain distance of isolation ward inside;

The prolongation of guide rail, the prolongation of each guide rail are all installed near guide rail is movable, and can move into and shift out isolation ward together in company with breaker unit, so that support circuit breaker when front openings moves when breaker unit passes.

The suitable practice is to be contained in to the power distribution equipment unit activity in the isolation ward and in its top and to load onto roller; Fixed guide is contained in the isolation ward, and also has a supporting surface, and when the power distribution equipment unit was in isolation ward inside, above-mentioned supporting surface and roller engagement were to support the power distribution equipment unit; Extensible track has a supporting surface, and this supporting surface is supported on the fixed guide slidably can be moved so that the supporting surface of advanced position in isolation ward and extensible track reaches between the extended position of isolation ward outside; The power distribution equipment unit comprises that front end is dull and stereotyped so that be in isolation ward sealing front openings when inner in the power distribution equipment unit; Therefore thereby extensible track links and can pass in and out isolation ward in company with the power distribution equipment unit with the power distribution equipment unit, this power distribution equipment unit just has been subjected to the support of extensible track when the power distribution equipment unit passes front openings when moving; This guide rail that gears to actual circumstances includes a cam, and this cam can be meshed with roller, thereby extensible track is shifted out from isolation ward together in company with the power distribution equipment unit; The front end flat board comprise one when power distribution equipment unit shift-in isolation ward can with the surface of the extension of guide rail engagement; Fixed guide and extensible track all have first and second supporting surfaces respectively, they all mesh with roller, first supporting surface slightly is higher than second supporting surface, thus just can move into isolation ward in the power distribution equipment unit or when isolation ward shifts out, between first supporting surface and second supporting surface, transmit the support loading of power distribution equipment unit.

The advantage of present device just is, does not lead to the inlet of extensible track in the compartment at no Qianmen, and the approach of dealing with problems is that track together moves into automatically and shifts out with circuit breaker.

By embodiment the present invention is described with reference to the accompanying drawings.These accompanying drawings are:

Fig. 1 is the end view of power distribution equipment, represents that it all places in the relevant cube body or the movably unit in the isolation ward;

Fig. 2 is an end view that is similar to Fig. 1, but a part has been pulled out in movably unit wherein from cube body or in the isolation ward;

Fig. 3 is an end view that is similar to Fig. 2, but movably unit is wherein extracted out and is supported on the extensible track from working position shown in Figure 1 fully;

Fig. 4 is the vertical view of IV in Fig. 1-IV line intercepting;

Fig. 5 is the front view of base and extensible track;

Fig. 6 is the vertical view of the VI-VI line intercepting from Fig. 5;

Fig. 7 is the end-view of the VII-VII line intercepting from Fig. 5.

With reference to above-mentioned accompanying drawing, wherein drawout switchgear apparatus 5 includes a circuit breaker 7 and an isolation ward or claims lattice chamber 9.Generally speaking, the circuit breaker that discloses in the 26S Proteasome Structure and Function of circuit breaker 7 and U.S. Patent No. 3,483,338 specifications is similar.Be that circuit breaker 7 is installed within the container by the mold pressing of high-strength phenolic resin (for example glass fibre of Qiang Huaing) formation.Movable end parts 11,13(sees Fig. 1) extend out from the rear wall of circuit breaker.The rear wall 19 that stationary end parts 15,17 pass isolation ward 9 extends out, and in that the right and the busbar (not shown) of rear wall 19 link as shown in Figure 1.The circuit that passes power distribution equipment 5 extends to movable end parts 13 and stationary end parts 17 from stationary end parts 15 by end pieces 11, circuit breaker 7.

Isolation ward 9 comprises

relative sidewall

21,23, rear wall 19 and open front 25.

Circuit breaker 7 includes a header board 27, and (as shown in Figure 1) front end flat board 27 is closed open front 25 when circuit breaker 7 is in service position or coupled position.Substructure member 31 is contained on two relative walls of isolation ward 9 to support circuit breaker 7.In order to support circuit breaker, on each substructure member, all have a groove 33, the effect of groove 33 is

support roller

35 and 37,

roller

35 and 37 is installed on the similar pivot 39 that the circuit breaker relative edge extends out.Each substructure member, 31 all comprise a support 41, and support 41 is fixed on the substructure member by bolt 43, and each bolt 43 keeps certain distance, and support 41 and substructure member also maintain certain distance.

An extensible track 45 all is housed on each substructure member 31, wherein comes to be extensible track 45 location with corresponding support 41.Each support 41 includes a cannelure 47, and the pilot pin 49 on extensible track 45 is installed in cannelure 47.A spring bearing 51 also is housed on substructure member, and the effect of spring bearing 51 is that (Fig. 3) can support this extensible track when extensible track is drawn out of fully.When circuit breaker 7 was in full fixed position or coupled position (Fig. 1), extensible track 45 was promptly released from its advanced position.

When circuit breaker 7 is come out by pull from isolation ward 9, promptly when the position of Fig. 1 changed to the position of Fig. 2,

roller

35,37 was moved to the left in groove 33 along supporting surface 53, up to roller 35 with for till the part of the need of guide rail prolongations (for example make progress, or projection 55) is when being meshed.If continue this unit of pull or circuit breaker 7, then under roller 35 is applied to the effect of power of epirelief part 55, extensible track and circuit breaker will be moved together, extensible track will be subjected to being contained in the support of the spring bearing 51 on the substructure member 31 simultaneously.If continue pull circuit breaker or unit 7 again, make its position shift to the position of Fig. 3 from Fig. 2, then

roller

35,37 this supporting surface 53 that is about to leave is shifted to the supporting surface 57 of guide rail 45, and circuit breaker 7 has obtained whole supports on supporting surface 57.By figure can 3 as can be known, guide rail 45 supports the location by ball bearing 51 in the groove 47 of support 41 and pilot pin 49.

When circuit breaker 7 turns back to coupled position (or service position) (Fig. 1) time from the position (Fig. 3) that is drawn out of fully,

roller

35,37 turns back on the supporting surface 57 of guide rail 45, up to the plane 59 run into guide rail 45 upper end 61 time just stop, so just this guide rail is turned back on the position between substructure member 31 and the support 41 (Fig. 4-7).When extraction position shown in Figure 3 continues to return, roller 37 just moves in the groove 33 and along supporting surface 53 and continues to move.

Shown in arrow among Fig. 3 63, supporting surface 53 is than guide pass 57 slightly high (high about 0.031 inch), therefore when circuit breaker moves into isolation ward 9, roller 57 and roller subsequently 59 just move up along the surface 65 of an inclination, thereby the load that is about to circuit breaker 7 is delivered on the substructure member 31 from extensible track 45.After this each roller continues groove 33 in mobilely, is in coupled position among Fig. 1 up to circuit breaker, when its

movable end parts

11,13 are meshed with parts 15,17 respectively till.

Also have a Bars linkage 67 can guarantee that circuit breaker 7 enters

movable end parts

11,13 and stationary end parts 15,17 joining positions reliably.Bars linkage 67 comprises that 69, one cam Bars of control lever shaft bar 71(is positioned on the control lever shaft 69) and a cam bolt 73.When circuit breaker 7 turned back in the isolation ward, cam bolt 73 entered in the groove 33, and under cam bolt 73 was just static when the right-hand member of groove 33 is positioned, there was a upwards projection 75 of fluting at this place.After this, allow control lever shaft 69 rotate (for example by unshowned Bars bar manual operation in the accompanying drawing), cam Bars bar 71 is inhour rotation thereupon also, the result makes cam bolt 73 enter in the projection 75 of upwards slotting, open surfaces 75a(Fig. 1 at projection 75 cam ring bolts 73 and projection 75) be close together, thereby this just makes

movable end parts

11,13 and stationary end parts 15,17 move and locks mutually and realized good electrical contact.

Remove outside

movable end parts

11,13 and the stationary end parts 15,17, second coupling or contact point 77 also telescopically are arranged on the

sidewall

21,23 of the relative wall of isolation ward.Second contact jaw 79 has been installed so that carry out freely meshing in the outside of circuit breaker 7 with second coupling 77., second coupling 77 is contained on the telescopic parts, these parts comprise that a mounting bracket 81, a guiding bolt 83(generally are contained in the support 81 for this reason) and a coil spring 85.Second contact jaw 79 comprises a plurality of terminals 87, and terminal 87 extends in the respective socket of second coupling 77 when centre position or check position.The lead (not shown) extends out from each the 4th coupling 77 and second contact jaw by customary way.

When circuit breaker 7 moved in the isolation ward 9, circuit breaker entered coupled position by open position, centre or check position.At open position (Fig. 3),

movable end parts

11,13 and stationary end parts 15,17 disconnect, and the engagement that do not contact of second coupling 77 and second contact jaw 79.In the centre or check position (Fig. 2), second coupling 77 and second contact jaw 79 join, but

movable end parts

11,13 do not contact with stationary end parts 15,17.At last, when circuit breaker was shifted to coupled position (Fig. 1), movable end parts and stationary end parts 11-17 interconnected and second hookup 77 and second contact jaw 79 also interconnect.

Therefore power distribution equipment of the present invention has provided a kind ofly when supported by stationary guide rails, in the time of pulling out and return, be subjected to extensible track to support automatically, can pass in and out the circuit breaker of isolation ward, and not need will carry out individual processing to track as prior art.

Claims

1, a kind of drawout switchgear apparatus for current consuming apparatus power distribution electric power, this power distribution equipment comprises the isolation ward of a front openings, the breaker unit that can pass in and out isolation ward, the stationary end parts that in isolation ward, supported, the movable end parts that are installed on the breaker unit and between the coupled position of stationary end parts and open position, move together in company with isolation ward, be used to support this unit and in isolation ward, include separately that the track segment of the guide rail of certain distance is characterized in that: the prolongation of guide rail, the effect of this prolongation is to make each guide rail all install versatilely also and can move into and shift out isolation ward together with breaker unit near prolongation, so just obtain its support when circuit breaker moves by front openings.

2, a kind of according to the described power distribution equipment of claim 1, the guide rail of wherein said separately certain distance all be positioned at the breaker unit relative edge near.

3, a kind of according to the described power distribution equipment of claim 2, the prolongation of wherein said each guide rail all is slidably mounted on its corresponding guide rail.

4, a kind of according to the described power distribution equipment of claim 3, wherein said breaker unit comprises the rotor block that can mesh with the guide rail on each side of this breaker unit.

5, a kind of according to the described power distribution equipment of claim 4, wherein said guide rail prolongation has comprised the parts of energy extensible track prolongation when breaker unit shifts out from isolation ward.

6, a kind of according to the described power distribution equipment of claim 5, wherein said breaker unit includes the surface of an energy and guide rail extension engagement so that the guide rail prolongation can be slipped in the isolation ward when breaker unit is moved into isolation ward.

7, a kind of according to the described power distribution equipment of claim 6, it is dull and stereotyped so that be in isolation ward sealing front openings when inner in the power distribution equipment unit that wherein said power distribution equipment unit pack contains front end, held level with both hands in the past plate include can with the described surface of guide rail prolongation engagement.

8, a kind of according to the described power distribution equipment of claim 1, comprising:

A power distribution equipment unit, this device unit is movably arranged in the isolation ward, and has roller and install in it;

A fixed guide, this guide rail are contained in the isolation ward and have a stayed surface, and this stayed surface is positioned at isolation ward and meshes to support this power distribution equipment unit with roller when inner in the power distribution equipment unit;

An extensible track, this extensible track has a stayed surface, this stayed surface is slidably supported between on the fixed guide so that first position in isolation ward and second position and moves, and the stayed surface of extensible track is projected into outside the isolation ward so that support this power distribution equipment unit in above-mentioned second position; This extensible track is bound up so that shift out and move in this isolation ward with power distribution equipment with the power distribution equipment unit.

9, a kind of according to the described power distribution equipment of claim 8, wherein said extensible track include can be with power distribution equipment unit engagement so that the parts that extensible track and power distribution equipment unit are extended out.

10, a kind of according to the described power distribution equipment of claim 8, wherein said power distribution equipment unit pack contain can be with stretching guide rail engagement so that said guide rail is turned back to parts in the isolation ward.

11, a kind of according to the described power distribution equipment of claim 8, wherein said extensible track includes one can be with the roller engagement so that shift out extensible track the cam of isolation ward with power distribution equipment.

12, a kind of according to the described power distribution equipment of claim 8, wherein said extensible track includes first supporting surface, this first supporting surface and roller engagement in the time of outside power distribution equipment is positioned at isolation ward, stationary guide rails includes second supporting surface, this second supporting surface and roller engagement in the time of within power distribution equipment is positioned at isolation ward, second supporting surface is slightly higher so that transmit the support loads of power distribution equipment unit between first and second supporting surfaces when power distribution equipment unit turnover isolation ward than first supporting surface.