CN2569387Y - Delocking and locking waiting mechanism for drawing out braker - Google Patents

Abstract

The utility model relates to an unblocking and locking waiting mechanism for a draw-out circuit breaker, which comprises a square shaft, a locking plate and rollers, wherein, three roller-ways are arranged on the lower plane of the square shaft at intervals; the front end of the square shaft penetrates through a supporting seat and is fixed with a slide plate, and the back end penetrates through the supporting seat and is arranged on a base plate in an extending mode; the locking plate is arranged on the supporting seat in a sliding mode and forms upward bias through a spring; the rollers are arranged on the locking plate; when a transmission screw rod of the circuit breaker is positioned at a lock position, the rollers are positioned in the roller-ways of the square shaft. The utility model has the advantages of simple structure, convenient installation and operation with labour saving.

Description

The release of drawout breaker, treat latch mechanism

The utility model relate to a kind of drawout breaker release, treat latch mechanism, particularly a kind of release of drawout breaker locking device, treat latch mechanism.

Traditional drawout breaker is for the usually equal latch-up-free device in position of separation, test, three kinds of different conditions of connection, thereby the definite of three kinds of diverse locations generally is to rely on the simulation of pointer on the analog indicator to indicate.But because the deviation at operator visual angle reaches the deviation of position in forward and backward moving process, it is inaccurate to cause circuit breaker to put in place, causes misoperation especially easily in actual use for this analog indicator; Simultaneously, thereby increased operator's operation easier because the exact position that puts in place is difficult to hold.Problem at above-mentioned existence, people have invented a kind of locking device of drawout breaker again, three grooves that it can be in separation, test respectively at circuit breaker, establish between on the plane on by square shaft when connecting the position of three kinds of different conditions are realized locking to drive lead screw by clamp, thereby have also locked circuit breaker.And to make circuit breaker continue to move forward or backward, at first must carry out release to drive lead screw, the release of drive lead screw generally is by stirring unlocking knob, the clamp disengaging was entered with cooperating of square shaft groove treat that the lock state gets final product, if but release be not set on locking device, treat latch mechanism, the operator is when shaking the drive lead screw handle, also must stir unlocking knob and maintain unlocked position always, groove on square shaft broke away from fully with cooperating just of clamp can unclamp unlocking knob, thereby can bring operational inconvenience to the operator.

The purpose of this utility model is release that a kind of drawout breaker of simple in structure, easy for installation, rapid operation will be provided, treats latch mechanism.

The purpose of this utility model is achieved like this, a kind of release of drawout breaker, treat latch mechanism, comprise square shaft 39, locking plate 29, roll and take out 30, be provided with three roller bearing grooves 34 between on the lower plane of described square shaft 39, the front end of square shaft 39 is fixing with slide plate 1 after passing through bearing 40, the rear end was then passed through to stretch behind the bearing 13 and was placed on the base plate 43, described locking plate 29 is slidingly mounted on the bearing 13, and pass through a spring 25 formations to upper offset, described roller bearing 30 is located on the locking plate 29, and roller bearing 30 is positioned at the roller bearing groove 34 of square shaft 39 when drive lead screw 2 is in latched position.

The utility model is because after having additional release on the locking device of drawout breaker, treating latch mechanism, cooperating of clamp 10 make drive lead screw 2 maintain released state by on locking plate 29 and the locking device, and when the handle that shakes drive lead screw 2 makes roller bearing 30 break away from scarf with roller bearing groove 34, locking plate 29 break away from automatically with locking device on cooperating of clamp 10 and drive lead screw 2 is in treat the lock state.Therefore after adopting said structure, the operator only need stir unlocking knob 22 earlier makes drive lead screw 2 maintain released state, and then the handle that shakes drive lead screw 2 can enter the lock state for the treatment of, need not when drive lead screw 2 handles are shaken on one side, after the groove of also stirring on one side unlocking knob and remaining to square shaft always breaks away from scarf with clamp fully, enter just now and treat the lock state, thereby have easy and simple to handle, labour-saving advantage.

Below in conjunction with accompanying drawing the utility model is further described below.

Accompanying drawing is that the utility model is installed on the enforcement of one on drawout breaker locking device illustration.

Locking plate 29 of the present utility model is

Shape.On locking plate 29, offer sliding tray 28, locking plate 29 is installed on the locating shaft 27 of bearing 13 by the sliding tray on it 28, adopt jump ring 44 clampings between the two, and guarantee that sliding tray 28 can do upper and lower moving on locating shaft 27, thereby realized being slidingly connected of locking plate 29 and bearing 13.One spring 25 is located at the upper end of locking plate 29, and the upper end of one end and locking plate 29 is fixed, and the spring base 24 on the other end and the bearing 13 is fixing, makes locking plate 29 be subjected to pulling force upwards all the time like this under the effect of spring 25.Roller bearing 30 is riveted on the lower end, the outside of locking plate 29, and when the clamp 10 of locking device locked drive lead screws 2, the roller bearing 30 on the locking plate 29 just was positioned at the centre position of the roller bearing groove 34 of square shaft 39 belows.

The locking device of the utility model drawout breaker comprises the bearing 13 that is located on the base plate 43,40, slide plate 1, be located in bearing 13 respectively, on 40 and the drive lead screw 2 that is connected with slide plate 1, analog indicator 3 and square shaft 39 and clamp 10, described drive lead screw 2 offers card ditch 37 near on the base portion, be provided with three grooves 15 between on the last plane of described square shaft 39, the front end of square shaft 39 is fixing with slide plate 1 after passing through bearing 40, the rear end was then passed through to stretch behind the bearing 13 and was placed on the base plate 43, described clamp 10 is slidingly mounted on the bearing 13, clamp 10 tool latch hooks 33, latch release shaft 35, projection 36, screw hole 38, latch hook 33 colludes with the outside of square shaft 39 joins, latch release shaft 35 is connected with unlocking knob 22 by declutch shift shaft 18, projection 36 is positioned at screw hole 38, wear the base portion of drive lead screw 2 in the screw hole 38, card ditch 37 on drive lead screw 2 base portions can with protruding 36 scarves, clamp 10 is made of to a lateral deviation a spring 8 to be put.

Three roller bearing grooves 34 on square shaft 39 lower planes of the present utility model lay respectively at three grooves 15 on the plane on it under, both are one-to-one relationship, and the width of roller bearing groove 34 is slightly larger than the width of groove 15.When mounted, the front end of square shaft 39 is fixing with slide plate 1 by jump ring 41 behind the square hole that penetrates on the bearing 40, is stretching behind the square hole 26 that penetrates on the bearing 13 on the square hole 23 that places base plate 43 its rear end, like this, can drive square shaft 39 when mobile and do synchronous forward and backward moving when slide plate 1 is forward and backward, thereby can be directly passed to bearing 13 to the position signalling of slide plate 1 by three grooves on the square shaft 39.

Bearing 13 of the present utility model, 40 are fixed on the base plate 43, drive lead screw 2 is passing bearing 13 successively, clamp 10, screwed hole engagement behind the screw hole on the bearing 40 on its threaded end and the slide plate 1, nut 42 is close to decides screw on drive lead screw 2, plane bearing 4 is set on the drive lead screw 2, when drive lead screw 2 rotations promote slide plate 1 when moving away from bearing 40 directions, drive lead screw 2 suffered counter-forces act directly on the bearing 40 by nut 42 and plane bearing 4, and when drive lead screw 2 is done reverse rotation, drive lead screw 2 suffered counter-forces lean on the shaft shoulder 5 and the pad 6 of drive lead screw 2 to act on the another side of bearing 40, like this, when drive lead screw 2 rotation, just can drive slide plate 1 and on base plate 43, do before, the rear to motion.Card ditch 37 of the present utility model is opened in drive lead screw 2 near base portion, be on the end of drive lead screw 2 dress handles, card ditch 37 has somely, is spaced around the screw mandrel body of rod, and makes card ditch 37 on the drive lead screw 2 be positioned at the screw hole 38 of clamp 10 when mounted.

Offer sliding tray 7,31 on the clamp 10 of the utility model locking device, clamp 10 is installed on the locating shaft 11,16 of bearing 13 by the sliding tray on it 7,31, adopt the jump ring clamping between the two, and guarantee that sliding tray 7,31 can be left and right mobile on the locating shaft 11,16 of correspondence, thereby realized being slidingly connected of clamp 10 and bearing 13.One spring 8 is located at the left side of clamp 10, and spring dog hole on one end and the clamp 10 9 is fixing, and the spring base 12 on the other end and the bearing 13 is fixed, and makes clamp 10 be subjected to left pulling force all the time like this under the effect of spring 8.On clamp 10, have with square shaft 39 collude latch hook 33, the latch release shaft 35 that is used to be connected unlocking knob 22, the screw hole 38 that is used to wear drive lead screw 2 of joining, be located in the screw hole 38 with drive lead screw 2 on the projection 36 of card ditch 37 scarves.When mounted, the latch release shaft 35 on the clamp 10 is positioned at release axis hole 14, and release axis hole 14 is opened on the bearing 13.The effect of clamp 10 is when the arbitrary groove 15 on the square shaft 39 is moved to clamp 10 positions, latch hook 33 on the clamp 10 is slipped in the groove 15 of square shaft 39, clamp 10 is moved to left, at this moment the projection by clamp 10 36 and card ditch 37 scarves of drive lead screw 2 are realized the locking to drive lead screw 2, thereby circuit breaker accurately can be locked in separation point position or test position or link position respectively.

The unlocking knob 22 that the utility model links to each other with the clamp 10 of locking device is slidably mounted in the fixed cover 20 of base plate 43, on unlocking knob 22, offer driving lever hole 21, one end of driving lever 19 is installed in the driving lever hole 21, one end of the other end of driving lever 19 and declutch shift shaft 18 is fixed, one end of the other end of declutch shift shaft 18 and shift fork 17 is fixed, and the other end of shift fork 17 is fixed on the latch release shaft 35 of clamp 10.By stirring unlocking knob 22, can drive declutch shift shaft 18 and rotate, the rotation of declutch shift shaft 18 drives shift fork 17, and then drive clamp 10 is done left and right moving.

The utility model is to come work like this: at first push breaker body, this moment, circuit breaker was in the separation point position.When the needs breaker body travels forward, must load onto handle at the base portion of drive lead screw 2 earlier, and then release, when release, by stirring unlocking knob 22, drive latch release shaft 35 by the declutch shift shaft 18 that connects on the unlocking knob 22, and then drive clamp 10 displacement to the right, at this moment also displacement to the right of the latch hook 33 of clamp 10, and the angle by latch hook 33 1 sides 32 gives the downward pressure of upper surface a one of locking plate 29, and locking plate 29 is depressed, and latch hook 33 strode across locking plate 29 to the right and it was caught on this moment, and the projection 36 in the screw hole 38 also breaks away to the right and the scarf that blocks ditch 37, makes drive lead screw 2 maintain released state.After the release, make the rotation of drive lead screw 2 clockwise directions by shaking handle, thereby promote slide plate 1 to moving away from bearing 40 directions, because an end of square shaft 39 is fixed on the slide plate 1, thereby square shaft 39 travels forward synchronously with slide plate 1, at this moment, the roller bearing 30 that the roller bearing groove 34 of square shaft 39 belows promotes locking plate 29 moves to base plate 43 directions, the colluding of latch hook 33 that moves to locking plate 29 disengagement clamps 10 joined, simultaneously, because the width of roller bearing groove 34 is greater than the width of groove 15, so the time clamp 10 broken away from groove 15 and under the tension of spring 8, be moved to the left the outside that the latch hook 33 on it catches on square shaft 29, because this segment distance is very little, also deficiency is so that the projection 36 on the clamp 10 is pinned the card ditch 37 of drive lead screw 2, be in the lock state for the treatment of this moment, the operator can continue to shake handle, make drive lead screw 2 continue the clockwise direction rotation, the square shaft 39 that drives on slide plate 1 and the slide plate 1 moves together, up to second groove 15 place that moves to square shaft 39, this moment, clamp 10 was under spring 8 effect of pulling force left, latch hook 33 on it breaks away from colluding of square shaft 39 outsides joins, and slip into left in the groove 15 of square shaft 39 tops, make the projection 36 on the clamp 10 insert and be embedded in the card ditch 37 of drive lead screw 2, thereby drive lead screw 2 is pinned, and this moment, circuit breaker was locked to test position again.And circuit breaker is in the release of test position and in the locking of link position, and its operation repeats said process.

Claims (4)

1, a kind of release of drawout breaker, treat latch mechanism, it is characterized in that comprising square shaft (39), locking plate (29), roller bearing (30), be provided with three roller bearing grooves (34) between on the lower plane of described square shaft (39), it is fixing with slide plate (1) after passing through bearing (40) that the front end of (39) is taken out by the side, the rear end was then passed through to stretch behind the bearing (13) and was placed on the base plate (43), described locking plate (29) is slidingly mounted on the bearing (13), and pass through a spring (25) formation to upper offset, described roller bearing (30) is located on the locking plate (29), and roller bearing (30) is positioned at the roller bearing groove (34) of square shaft (39) at the drive lead screw (2) of circuit breaker when being in latched position.

2, the release of drawout breaker according to claim 1, treat latch mechanism, it is characterized in that locking plate (29) is

Shape.

3, the release of drawout breaker according to claim 1, treat latch mechanism, it is characterized in that three roller bearing grooves (34) on square shaft (39) lower plane lay respectively at three grooves (15) on the plane on it under, both are one-to-one relationship.

4, the release of drawout breaker according to claim 3, treat latch mechanism, it is characterized in that the width of roller bearing groove (34) is slightly larger than the width of groove (15).