CN2571037Y - Locking apparatus for draw-off type breaker - Google Patents

Abstract

The utility model relates to a locking apparatus for a draw-out circuit breaker. The utility model comprises a supporting seat 40 arranged on a bottom plate 43, a slide plate 1, a transmission screw rod 2 arranged on the supporting seat 40 and connected with the slide plate 1 and an analog indicator 3, wherein, a clamp groove 37 is arranged on the transmission screw rod 2; a supporting seat 13 is additionally arranged on the bottom plate 43; a square shaft 39 is additionally arranged between the supporting seats 13, 40; three grooves 15 are arranged on the upper plane surface of the square shaft 39 at intervals; the supporting seat 13 is connected with a clamp plate 10 in a sliding mode; a lock hook 33, a bulge 36 and a screw rod hole 38 are arranged on the clamp plate 10; the lock hook 33 is hooked and matched with the outside of the square shaft 39; the bulge 36 is positioned in the screw rod hole 38; the driving screw rod 2 penetrates in the screw rod hole 38; the clamp groove 37 can be scarfed with the bulge 36; the clamp plate 10 forms lateral offset through a spring 8. The utility model has the advantages of reasonable structure and convenient operation; the utility model can carry out accurate lock when the circuit breaker is positioned in the positions of separation, test and connection respectively to avoid false operation.

Description

The locking device of drawout breaker

The utility model relates to the locking device of a kind of locking device, particularly a kind of drawout breaker.

Traditional drawout breaker does not all have detent mechanism usually for the position of separating, test, connect three kinds of different conditions, thereby the definite of three kinds of positions generally is the simulation indication that relies on pointer on the analog indicator.Concrete structure is that the end with analog indicator is installed on the slide plate, and the other end stretches out after passing bearing outside the base plate, is shaped on indicating dial and pointer on it respectively, and sign has separation, test, three kinds of states of connection on indicating dial.When inserting the drive lead screw base portion with handle and shaking drive lead screw, slide plate is gone forward at base plate under the drive of drive lead screw, move the back, the analog indicator that drives thus on the slide plate rotates together, force the pointer rotation on the analog indicator, when pointer rotates to an angle the back when overlapping with the separation point position that identifies on the indicating dial, expression circuit breaker this moment is in released state, and rotate to an angle the back again when overlapping when pointer with the test position that identifies on the indicating dial, expression circuit breaker this moment is in trystate, same rotate to when overlapping when pointer, represent that circuit breaker is in connection status at this moment with the link position that identifies on the indicating dial.Therefore three kinds of different conditions positions of circuit breaker determines to indicate by the simulation of pointer on the analog indicator and realizes.The defective of its existence is: because the deviation at operator visual angle and in forward and backward moving process the deviation of position, it is inaccurate to cause circuit breaker to put in place, as easy as rolling off a logly causes misoperation; Secondly, because the exact position that puts in place is difficult to assurance, thereby increased operator's operation easier.

Chinese patent application number is 93101774.2, the patent of invention that a kind of name is called " drawable switch equipment " is disclosed, this drawable switch equipment mainly is a kind of invention at the slide mechanism that is used for circuit breaker supporting, first travelling arm that this slide mechanism is supported slidably by upper and lower support rails and second travelling arm that is supported slidably by first travelling arm.When first travelling arm when binding site slides to the last extraction position of first travelling arm, second travelling arm and the lockplate interlocking of first travelling arm.When first travelling arm arrived the last extraction position of first travelling arm, because the rotation of lockplate, second travelling arm of interlocking state discharged, and circuit breaker is all extracted out.Although it is to have the problem that the small size body also can easily keep in repair and check that this invention has just solved.

The purpose of this utility model be to provide a kind of rational in infrastructure, be convenient to operate, can be in separation, test respectively, accurately locate, avoid the locking device of the drawout breaker of misoperation when connecting three positions at circuit breaker.

The purpose of this utility model is achieved like this, a kind of locking device of drawout breaker, it comprises the bearing 40, the slide plate 1 that are located on the base plate 43, be located on the bearing 40 and the drive lead screw 2 that is connected with slide plate 1 and be located on the bearing 40 and the analog indicator 3 that is connected with slide plate 1, and described drive lead screw 2 offers card ditch 37 near on the base portion; Have additional a bearing 13 on the described base plate 43; Have additional a square shaft 39 between the described bearing 13,40, establish three grooves 15 between on the last plane of square shaft 39, the front end of square shaft 39 is in that to pass through bearing 40 backs fixing with slide plate 1, and the rear end was then passed through to stretch behind the bearing 13 and placed on the base plate 43; Slidely connect a clamp 10 on the described bearing 13, have latch hook 33, projection 36, screw hole 38 on the clamp 10, latch hook 33 colludes with the outside of square shaft 39 joins, projection 36 is positioned at screw hole 38, wear the base portion of drive lead screw 2 in the screw hole 38, the card ditch 37 of drive lead screw 2 base portions can with protruding 36 scarves, clamp 10 constitutes by a spring 8 to be put to a lateral deviation.

The utility model is because at bearing 13, set up a square shaft 39 between 40, be provided with between on the square shaft 39 and represent that respectively circuit breaker separates, test, three grooves 15 of link position signal, and dependence is slidingly connected to the clamp 10 on the bearing 13, can be in the transmission process of drive lead screw 2, when the groove 15 of opposite position on the square shaft 39 passes through clamp 10, latch hook 33 on the clamp 10 breaks away from colluding of square shaft 39 outsides joins, and under the effect of spring 8 pulling force, slip in the groove 15, clamp 10 is moved to left and realize locking, thereby have accurate positioning drive lead screw 2, locking is reliable, avoid the advantage of misoperation.

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

Fig. 1 is an example structure sketch of the present utility model.

Fig. 2 is the structural representation of the trailing flank of bearing 13 of the present utility model.

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 rotating, drive lead screw 2 promotes 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 made backward rotation, drive lead screw 2 suffered counter-forces lean on the shaft shoulder 5 and the pad 6 of drive lead screw to act on the another side of bearing 40, like this, when drive lead screw 2 rotates, 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 the base portion of drive lead screw 2, an end of handle promptly is used to plant, card ditch 37 has somely, is spaced around the screw mandrel body of rod, and makes card ditch 37 on drive lead screw 2 base portions be positioned at the screw hole 38 of clamp 10 when mounted.

Offer three grooves 15 at interval on the last plane of square shaft 39 of the present utility model, offer roller bearing groove 34 respectively with three grooves, 15 opposite position places on the lower plane of square shaft 39, the width of roller bearing groove 34 is slightly larger than the width of groove 15.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, and is stretching behind the square hole 26 that penetrates bearing 13 on the square hole 23 that places base plate 43 rear end, like this, when slide plate 1 seesaws, can drive square shaft 39 and do synchronous seesawing, thereby can be directly passed to bearing 13 to the position signalling of slide plate 1 by three grooves 15 on the square shaft 39.

The utility model is like this clamp 10 to be slidingly connected on the bearing 13, on clamp 10, offer sliding tray 7,31, make clamp 10 be 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.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 and collude latch hook 33, the screw hole 38 that is used to wear drive lead screw 2 of joining, be located in the screw hole 38 projection 36 with card ditch 37 scarves of drive lead screw 2.Simultaneously, in order to solve the unlatching of locking device after locking, can set up a latch release shaft 35 on clamp 10, latch release shaft 35 is installed in the release axis hole 14, and release axis hole 14 is opened on the bearing 13.The effect of clamp 10 is when three grooves 15 on the square shaft 39 move to clamp 10 positions respectively, latch hook 33 on the clamp 10 slips in the groove 15 under the effect of spring 8 pulling force, clamp 10 is moved to left, projection 36 by clamp 10 and card ditch 37 scarves of drive lead screw 2 are realized the locking with drive lead screw 2, thereby circuit breaker accurately can be locked in separation point position or test position or link position respectively.

The latch release shaft 35 of clamp 10 of the present utility model is connected with unlocking knob 22 by declutch shift shaft 18, unlocking knob 22 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.The effect of unlocking knob 22 is the releases to the utility model locking device, specifically be by stirring unlocking knob 22, can drive declutch shift shaft 18 rotates, the rotation of declutch shift shaft 18 drives shift fork 17, and then drive clamp 10 displacement to the right, make projection 36 disengaging releases of clamp 10 with the scarf of the card ditch 37 of drive lead screw 2 base portions.

Locking device of the present utility model release for convenience, the locking plate 29 that also can on bearing 13, be slidingly connected, locking plate 29 to upper offset, is shaped on a roller bearing 30 by a spring 25 on locking plate 29, and the roller bearing groove of offering on roller bearing 30 and square shaft 39 lower planes 34 cooperates.Offer sliding tray 28 on the locking plate 29, 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 upside of locking plate 29, and the upper end of one end and locking plate 29 is fixed, and the spring base 24 of the other end and 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 a side of locking plate 29, and the roller bearing 30 when drive lead screw 2 is locked in a certain position on the locking plate 29 just is positioned at the centre position of the roller bearing groove 34 of square shaft 39 belows.The effect of locking plate 29 is for convenient operation, particularly when this locking device from the release that locks onto of a position, and then must have one to treat the lock state before changing the locking of the next position over to, thereby locking plate 29 mainly plays release, treats the lock effect.If the utility model saves locking plate 29, the roller bearing groove 34 that then is opened on square shaft 39 lower planes also can be removed, but this will bring inconvenience to the operator.For example the operator must stir unlocking knob 22 and maintain unlocked position always, and the groove 15 on square shaft 39 breaks away from and the cooperating just of latch hook 33 of clamp 10 can unclamp unlocking knob 22, this locking device is entered after release treat the lock state.

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, necessary elder generation is at the base portion of drive lead screw 2, promptly be shaped on an end end plant handle of card ditch 37, 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, make the also displacement to the right thereupon of latch hook 33 of clamp 10, at this moment the angle 32 of latch hook 33 1 ends is given the downward pressure of upper surface a one of locking plate 29, locking plate 29 depressed and stride across locking plate 29 to the right after it is caught on, simultaneously because the moving to right of clamp 10, projection 36 on the clamp 10 is broken away from and the scarf that blocks ditch 37, and drive lead screw 2 is unlocked.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 the baseplane of base plate 43 direction, the colluding of latch hook 33 that moves to locking plate 29 disengagement clamps 10 joined, simultaneously since the width of roller bearing groove 34 greater than the width of groove 15, so the time clamp 10 broken away from groove 15 and under the effect of spring 8, be moved to the left the outside that the latch hook 33 on it catches on square shaft 29, because this distance is very little, also deficiency is so that the card ditch 37 that the projection 36 of clamp 10 is pinned on the drive lead screw 2, be in the lock state for the treatment of this moment, the operator can continue to shake handle, drive lead screw 2 is moved forward, the square shaft 39 that drives on slide plate 1 and the slide plate 1 moves forward together, be positioned at clamp 10 positions up to second groove 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 move to left in the groove 15 of square shaft 39, 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 locked in this groove position and can't rotates again, 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 (2)

1, a kind of locking device of drawout breaker, it comprises the bearing (40), the slide plate (1) that are located on the base plate (43), be located in that bearing (40) is gone up and the drive lead screw (2) that is connected with slide plate (1) and be located in the analog indicator (3) that bearing (40) is gone up and is connected with slide plate (1), it is characterized in that offering Ka Gou (37) on the close base portion of described drive lead screw (2); Have additional a bearing (13) on the described base plate (43); Have additional a square shaft (39) between described bearing (13), (40), establish three grooves (15) between on the last plane of square shaft (39), the front end of square shaft (39) is in that to pass through bearing (40) back fixing with slide plate (1), and the rear end was then passed through to stretch behind the bearing (13) and placed on the base plate (43); Slidely connect a clamp 10 on the described bearing (13), have latch hook (33), projection (36), screw hole (38) on the clamp 10, latch hook (33) colludes with the outside of square shaft (39) joins, projection (36) is positioned at screw hole (38), wear the base portion of drive lead screw (2) in the screw hole (38), the Ka Gou (37) of drive lead screw (2) base portion can with projection (36) scarf, clamp (10) is put to a lateral deviation by a spring (8) formation.

2, the locking device of drawout breaker according to claim 1, it is some to it is characterized in that Ka Gou (37) has, and is spaced around the screw mandrel body of rod.

Images