CN202231334U - Interlocking device for draw-out type breaker - Google Patents

Abstract

Disclosed is an interlocking device for a draw-out type breaker, belonging to the electrical technology field. The draw-out type breaker comprises a breaker body and a socket, wherein the breaker body comprises an operation mechanism having a releasing lever and a drive rod. The interlocking device comprises a pedestal, a rotary push rod which, arranged upon the pedestal, sticks out the pedestal toward one end of the operation mechanism and extends inside the breaker body to correspond to the drive rod, a rotary push rod actuating apparatus which, arranged upon the pedestal, contacts the rotary push rod at one side corresponding to the rotary push rod and sticks out the pedestal toward the direction of the socket to correspond to the socket, and a rotary push rod return spring, with one end thereof supporting the rotary push rod while the other end thereof supporting the pedestal. The interlocking device for draw-out type breaker can eliminate the assembling error resulting from separated installation and ensure the reliability of the motion. The interlocking device for draw-out type breaker can avoid the invasion from dust and foreign matters and be applied to draw-out type breakers of various rated current grades. Moreover, with a concise structure, the interlocking device for draw-out type breaker is convenient for making, installation, and maintenance.

Description

The interlock of drawout breaker

Technical field

The utility model belongs to technical field of electricity, is specifically related to a kind of interlock of drawout breaker

Background technology

pull-out type and for moulded case circuit breaker with the mode of plug operate make as the breaker body of moving part with realize connecting or separating as the socket of standing part, bring great convenience for the maintenance of user's O&M.

The factor consideration that ensures operator's safety is started from , and according to the relative national standards regulation, drawer mechanism should be equipped with and have only and after the main contact of circuit breaker breaks off, just allow insulating contact to separate or closed again interlock.That is to say, do not allow to be under the "on" position operation is extracted or inserted to aforesaid moving part (being breaker body) with respect to standing part (being socket) at the circuit breaker main contact.

The interlock of known drawout breaker is whether to be embodied by the release lever effect of the push rod that stretches out from the circuit breaker bottom to circuit breaker operation mechanism; When push rod is in when stretching out state, just stop breaker closing, and make the circuit breaker main contact be in off-state; When circuit breaker is contained on the pull-out type base; When pushing circuit breaker, push push rod, push rod discharges release lever, and circuit breaker just can carry out closing operation.Though this structure can guarantee circuit breaker and under the situation that main contact separates, insert or extract operation that existing circuit breaker not insert socket before can't be to the shortcoming of its detection.

The disclosed draw-out molded case circuit breaker technical scheme of invention patent mandate notification number CN1041468C can realize that circuit breaker does not insert socket detection before, specifically can walk to the description of the 7th page of the 13rd row referring to the specification of this patent for the 6th page the 15th.

still; Above-mentioned CN1041468C showed owing to cam mechanism to the tediously long shortcoming that exists push rod to be prone to deviation position or to fracture in the course of the work of the distance between the tripping mechanism of circuit breaker, this shortcoming is pointed and remedied by the technical scheme that CN200953291Y provides by utility model patent Granted publication CN200953291Y (interlock of drawer type plastic casing circuit breaker).

still; Still there is following logical fraud in above-mentioned two patent schemes: one of which; Because all being separated, interlock is installed in two independently on the parts; Therefore because of the rigging error influence certain to the reliable in action property generation of interlocking device, for example cam is installed in standing part is on the socket to CN1041468C, and the support that will be furnished with parts such as drive link and rocking bar is installed on the back plate of circuit breaker; And for example cam is installed in standing part is on the socket to CN200953291Y, and side mechanism is installed in circuit breaker contact modules side; Its two therefore because that whole interlocking device shows as is open, can not get effectively covering protecting, so after suffering the trifle in the world invasion and attack, the interlocking device that in air, is completely exposed exists clamping stagnation and even stuck anxiety; Its three, do not have versatility, for example the circuit breaker for different rated current specifications can't use identical interlocking device; Its four, parts are many, complicated integral structure is unfavorable for make installing and maintenance.

In view of above-mentioned prior art, be necessary to improve, for this reason, the applicant has done useful design, and the technical scheme that will introduce below produces under this background

Summary of the invention

It serves as carrier to be installed use the reliability of avoiding causing influencing because of the rigging error that partial installation causes action that the task of the utility model is to provide a kind of helping with same individual components; Help embodying desirable covering to protect effect and use and prevent trifle in the world invasion and attack and avoid clamping stagnation and even stuck phenomenon takes place; Being of value to adaptation uses and uses the embodiment versatility and use convenient the manufacturing with the simplified structure of being convenient to is arranged different rated current level breaker; The interlock of the drawout breaker of installing and keeping in repair.

The task of the utility model is accomplished like this; A kind of interlock of drawout breaker; Described drawout breaker comprises breaker body and socket; Breaker body comprises the operating mechanism of the drive link that has the dropout lever and match with the dropout lever, and described interlock comprises that one is used for and the fixing base of the back plate of said breaker body; One rotation push rod, this rotation push rod pivot is arranged on the base, and this rotation push rod leans out base towards an end of said operating mechanism and is stretched in the said breaker body corresponding with described drive link; One is used to order about the rotation pushrod actuation device of rotation push rod rotation; This rotation pushrod actuation device is provided on the base up or down; And the side corresponding to the rotation push rod is contacting with the rotation push rod, and wherein: rotating the pushrod actuation device, to lean out described base towards the direction of said socket corresponding with said socket; One rotation push rod back-moving spring, an end bearing is on said rotation push rod, and the other end is bearing on the base.

are in one of the utility model concrete embodiment; Offer a vertical push rod sliding tray at described base corresponding to the position of described rotation pushrod actuation device; This vertical push rod sliding tray is offered along the short transverse of base; And constitute a vertical push rod pilot pin in the bottom of this vertical push rod sliding tray, described rotation pushrod actuation device is slidingly matched with vertical push rod sliding tray, and matches with described vertical push rod pilot pin; On said base, also constitute a rotation push rod shaft and be provided with a rotation push rod back-moving spring axle; Described rotation push rod is arranged on the rotation push rod shaft towards an end end of said socket rotationally, and the middle part of described rotation push rod back-moving spring is nested with on rotation push rod back-moving spring axle.

in another concrete embodiment of the utility model, described rotation pushrod actuation device comprises a vertical push rod and a spring, and vertically push rod and described vertical push rod sliding tray are slidingly matched; On this vertical push rod, offer a pilot pin groove; Described vertical push rod pilot pin probes in this pilot pin groove, and spring is located in the sliding tray, and the upper end of this spring is bearing on the roof of said vertical push rod sliding tray; And the lower end is bearing on the spring base; Wherein: constitute a boss in the upper end of vertical push rod and towards a side of said rotation push rod, this boss contacts with the rotation push rod, orders about the rotation of rotation push rod by boss.

are in another concrete embodiment of the utility model; On described rotation push rod and towards a side of said vertical push rod, constitute a pair of parallel rolling member axle bed; This is provided with a rolling member axle to the rolling member axle bed; And the rolling member axle is provided with a rolling member, and this rolling member contacts with described boss.

in another concrete embodiment of the utility model, described rolling member is roller shell, roller bearing or needle bearing.

also have among the concrete embodiment the utility model, and the corresponding end end of described rotation push rod and said drive link constitutes one and is used to promote cutting somebody's hair of drive link.

the utility model more and among concrete embodiment, described rotation push rod back-moving spring is torsion spring or stage clip.

the utility model so that concrete embodiment in; On described base, having one is used for said rotation push rod, rotation pushrod actuation device and rotation push rod back-moving spring are covered the cover plate that protects; Also have one on the said base and be used for a plurality of first auxiliary sections of fixing with cover plate, and have second auxiliary section that quantity equates with first auxiliary section on the cover board and in position corresponding to first auxiliary section.

the utility model again more and among concrete embodiment, when described first auxiliary section was tenon, then described second auxiliary section was the fourth of the twelve Earthly Branches; When described first auxiliary section is the period of the day from 5 am. to 7 am., then described second auxiliary section is a tenon.

at again and then among concrete embodiment of the utility model, and the top of described base constitutes a plurality of a plurality of base alignment pins that are used for the fixing base fixing hole of the back plate of described breaker body and are used for equally matching with the back plate of breaker body.

The technical scheme that the utility model provides is owing to whole interlock being constituted as a whole standalone module and fixing with the back plate of breaker body; Therefore need not to resemble and be installed separately on breaker body and socket the prior art; Be installed separately caused rigging error thereby be able to eliminate, guarantee the reliability of moving; Owing to be combined with cover plate on the base, therefore can effectively cover and protect rotation push rod, rotation pushrod actuation device and rotation push rod back-moving spring, avoid suffering the trifle in the world foreign matter to attack; Because whole device has been constituted modular construction, therefore be of value to adaptation general to the drawout breaker of different rated current grades; Because overall structure is terse, therefore has and be convenient to making, installation and maintenance.

Description of drawings

Fig. 1 is the preferred embodiment structure chart of the interlock of the utility model drawout breaker.

Fig. 2 is the cutaway view of Fig. 1.

Sketch map when Fig. 3 separates with socket for interlock shown in Figure 1.

Fig. 4 is an interlock shown in Figure 1 sketch map when inserting socket with breaker body.

To be interlock shown in Figure 1 insert the sketch map behind the socket with breaker body to Fig. 5.

Embodiment

can be expressly understood the technical spirit and the beneficial effect of the utility model more for the auditor that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be regarded as the technical scheme category of the utility model.

Fig. 1 and Fig. 2 and combination Fig. 3 to Fig. 5 are asked for an interview in ; In Fig. 2 to Fig. 5, illustrated as the breaker body 1 of the moving part of drawout breaker with as the socket 2 of the standing part of drawout breaker; According to known technology; Breaker body 1 has an operating mechanism 11, and operating mechanism 11 has dropout lever 111 and drive link 112.

Fig. 1 and Fig. 2 please emphasis be seen in , have provided in use back plate (can claim that also the back plate is the back side) the fixing interlock with aforesaid breaker body 1.When the applicant do to describe in detail interlock below orientation (direction) the property notion on related upper and lower and left side, right side and so on all be with at present by location status shown in Figure 1, thereby can not be interpreted as restriction in view of the above to the utility model scheme.

preferably but not the structure of the interlock that definitely is limited to is following: comprise a base 3, a rotation push rod 4, a rotation pushrod actuation device 5, a rotation push rod back-moving spring 6 and a cover plate 7; Base 3 is towards a side of cover plate 7 and offering vertical push rod sliding tray 31 corresponding to the position of rotation pushrod actuation device 5 along the short transverse of base 3; In the bottom of this vertical push rod sliding tray 31 is that the notch position of vertical push rod sliding tray 31 and the central authorities that preferably occupy the Width of notch constitute a vertical push rod pilot pin 311; And a same side towards cover plate 7 constitutes a rotation push rod shaft 32 and a rotation push rod back-moving spring axle 33 on base 3; Wherein, rotation push rod shaft 32 is corresponding to the side-lower of rotation push rod back-moving spring axle 33.Offer a pair of base fixing hole 35 and a pair of base alignment pin 36 that quantity does not receive the diagram restricted number at the top of base 3 again.When using the interlock of the utility model, with screw 351 (Fig. 2 shows) the back plate of base 3 and breaker body 1 is fixed, and the dowel hole on the back plate of alignment pin 36 and breaker body 1 is matched.And, on base 3, also constitute three first auxiliary sections 34 that the quantity that is used for matching with cover plate 7 should not receive the diagram restricted number equally.On cover plate 7, constitute second auxiliary section 71 that match with aforementioned first auxiliary section 34 and that quantity equates with first auxiliary section, first, second auxiliary section 34,71 tenon fourth of the twelve Earthly Branches each other cooperates.When first auxiliary section 34 was tenon, then second auxiliary section was the fourth of the twelve Earthly Branches, otherwise when first auxiliary section 34 is the period of the day from 5 am. to 7 am., then second auxiliary section 71 is a tenon, and present embodiment is selected the former.When cover plate 7 with also can use after the base 3 tenon fourths of the twelve Earthly Branches cooperate one group of cover plate hold-down screw 72 that cover plate 7 is fixing with the cover plate fixing screw hole 37 on the base 3.

Fig. 1 and Fig. 2 are continued to see in ; Aforesaid rotation push rod 4 is arranged on the base 3 rotationally; By shown in Figure 1; Constitute a rotation push rod axle bed 43 in the end, lower end of this rotation push rod 4, on this rotation push rod axle bed 43, have a rotation push rod axis hole 431, be placed on aforesaid rotation push rod shaft 32 by the rotation push rod axis hole 431 that rotates push rod axle bed 43 and realize that rotation push rods 4 pivots are arranged on the base 3; The upper end of rotation push rod 4 leans out the top of base 3 as free end and is stretched in the aforesaid breaker body 1, and is corresponding with aforesaid drive link 112.In order to make rotation push rod 4 reliably to drive link 112 effect, thereby in the end, upper end of rotation push rod 4 and constitute one towards a side of drive link 112 and cut somebody's hair 42.Rotation push rod 4 constitutes a pair of parallel rolling member axle bed 41 towards a following side that is about to the rotation pushrod actuation device 5 of detailed description; This is provided with a rolling member axle 411 to rolling member axle bed 41, and promptly on the rolling member axle axis body between a pair of rolling member axle bed 41, is provided with a rolling member 4111 at the middle part of rolling member axle 411.Rolling member 4111 both can use roller shell, also can use roller bearing, can also use needle bearing, perhaps used other equivalent rolling member, and present embodiment uses ball bearing.

provide preferably but not the structure of the rotation pushrod actuation device 5 that definitely is limited to is following: comprise a vertical push rod 51 and a spring 52; Vertically push rod 51 is slidingly matched with aforesaid vertical push rod sliding tray 31; And on this vertical push rod 51, offer a pilot pin groove 511, aforesaid vertical push rod pilot pin 311 probes in this pilot pin groove 511.Spring 52 is located in the sliding tray 31, and keep out on the roof that is bearing in vertical push rod sliding tray 31 shortly the upper end of this spring 52, and the lower end is then kept out and is bearing in shortly on the spring base 521.Know by shown in Figure 1; Vertically the lower end of push rod 51 promptly leans out vertical push rod sliding tray 31 towards an end of the socket of being illustrated by Fig. 2 to Fig. 52; Have only when the bottom surface of vertical push rod 51 contacts with socket 2 and make vertical push rod 51 when vertically push rod sliding tray 31 is to top offset; And during spring 52 compression, vertically the lower end of push rod 51 just is retracted in the vertical push rod sliding tray 31.It is thus clear that rotation push rod 4 is used for stroke is amplified on the one hand, the direction of the active force that on the other hand vertical push rod 51 is produced changes.

are in the upper end of vertical push rod 51 and constitute one towards a side of aforesaid rotation push rod 4 and be used for the boss 512 that is used for aforesaid rolling member 4111; When boss 512 contacts with rolling member 4111; Then promoting rotation push rod 4 rotates; And when first plane 5121 of rolling member 4111 and boss 512 and second plane 5122 contact, under the active force of the rotation push rod back-moving spring 6 that then is about to below to describe rotation push rod 4 is resetted.More particularly, when rolling member 411 during, when promptly contacting, can prevent that just breaker body 1 from closing a floodgate with the surface of boss 512 corresponding to boss 512 surperficial; If rolling member 4111 is in the retracted position of vertical push rod 51 when promptly contacting with first plane 5121 or second plane 5122, just can detect to breaker body 1.

provide preferably but not the rotation push rod back-moving spring that definitely is limited to 6 is torsion spring; The middle part of this torsion spring is nested with on aforesaid rotation push rod back-moving spring axle 33; And an end of torsion spring promptly first spring pin 61 keep out (supporting) and rotating push rod 4 on the rotation push rod wall body of a side of aforementioned rotation pushrod actuation device 5; And should support the position substantially corresponding to the position, back of aforesaid rolling member axle bed 41, the other end of torsion spring i.e. second spring pin 62 is kept out (supporting) on the sidewall of aforementioned base 3.

rotate push rod back-moving spring 6 certainly also can be stage clip; This stage clip one end is kept out (supporting) and is being rotated push rod 4 on the rotation push rod wall body of a side of aforementioned rotation pushrod actuation device 5; And should support the position substantially corresponding to the position, back of aforesaid rolling member axle bed 41, the other end of stage clip is kept out (supporting) on the sidewall of aforementioned base 3.

are asked for an interview Fig. 3 to Fig. 5 and are combined Fig. 1 and Fig. 2, and aforesaid driving member 112 is designed on the one hand and 111 actings in conjunction of dropout lever, on the other hand again with the interlock acting in conjunction of the utility model; Its operation principle is: probe in the operating process of socket 2 at breaker body 1; When breaker body 1 and socket 2 were close to predetermined distance, the vertical push rod 51 of rotation pushrod actuation device 5 of interlock that is installed in the utility model at breaker body 1 back side contacted with socket 2 bottoms, and vertical push rod 51 is moved up; When moving to boss 512 places; Act on rolling member 4111 by boss 512, under the active force that overcomes rotation push rod back-moving spring 6, make rotation push rod 4 towards turning clockwise, through after certain idle stroke; 42 promotion driving members, 112 rotations of cutting somebody's hair by the upper end that rotates push rod 4; Thereby promote dropout lever 111, make the operating mechanism 11 releases tripping operation of breaker body 1, and make breaker body 1 remain on the state that can't close a floodgate; When breaker body 1 is inserted into socket 2 prescribed depth; The rolling member 4111 of rotation push rod 4 contacts with second plane 5122; Driving member 112 resets under the effect of spring counter-force simultaneously, no longer acts on dropout lever 111, makes breaker body 1 be in the state that can close a floodgate; Extract in the operation with respect to socket 2 at breaker body 1; Vertically push rod 51 moves downward under the spring force effect of spring 52; When moving to boss 512 promotion rolling members 4111; Then rotate push rod 4 and promote driving member 112, thereby promote dropout lever 111 releases tripping operation, guarantee that breaker body 1 is in off-state before extracting by driving member 112; After breaker body 1 was away from socket 2, boss 512 broke away from rotation push rod 4, and drive link 112 resets under the active force of spring simultaneously, no longer contacts with dropout lever 111, makes breaker body 1 be in the state that can close a floodgate.

The above-mentioned interlock that the utility model provides can prevent any incorrect operation; And can, device make an experiment when being in the extraction position; On the other hand because interlock all is to be contained in the circuit breaker back side; The effect of the vertical push rod 51 of jack-up is just played in the socket bottom surface, thus avoided of the influence of the rigging error of breaker body 1 and socket 2 to interlock, and the interlock in the existing technology is to be contained in respectively on socket 2 and the breaker body 1; When having caused breaker body 1 to insert socket 2, interlock lost efficacy because of rigging error.Because interlock is the module of an integral body; Actuating mechanism all is under the environment of sealing relatively, can prevent effectively that dust from getting into, and prolongs the interlock life-span effectively; And the circuit breaker of different electric traffic specification can be realized general; Reduce number of parts effectively, practiced thrift cost, made things convenient for the user to keep in repair.

This is simple in structure, easy for installation, and protection is reliable, modularized design, and installation and maintenance are convenient, and do not receive the influence of rigging error between circuit breaker and the socket

Claims (10)

1. the interlock of a kind of drawout breaker; Described drawout breaker comprises breaker body (1) and socket (2); Breaker body (1) comprises the operating mechanism (11) of the drive link (112) that has dropout lever (111) and match with dropout lever (111), it is characterized in that described interlock comprises that one is used for and the fixing base (3) of the back plate of said breaker body (1); One rotation push rod (4), this rotation push rod (4) pivot is arranged on the base (3), and this rotation push rod (4) leans out base (3) towards an end of said operating mechanism (11) and is stretched in the said breaker body (1) corresponding with described drive link (112); One is used to order about the rotation pushrod actuation device (5) of rotation push rod (4) rotation; This rotation pushrod actuation device (5) is provided on the base (3) up or down; And the side corresponding to rotation push rod (4) is contacting with rotation push rod (4), and wherein: rotating pushrod actuation device (5), to lean out described base (3) towards the direction of said socket (2) corresponding with said socket (2); One rotation push rod back-moving spring (6), an end bearing is on said rotation push rod (4), and the other end is bearing on the base (3).

2. the interlock of drawout breaker according to claim 1; It is characterized in that offering a vertical push rod sliding tray (31) corresponding to the position of described rotation pushrod actuation device (5) at described base (3); This vertical push rod sliding tray (31) is offered along the short transverse of base (3); And constitute a vertical push rod pilot pin (311) in the bottom of this vertical push rod sliding tray (31); Described rotation pushrod actuation device (5) is slidingly matched with vertical push rod sliding tray (31), and matches with described vertical push rod pilot pin (311); On said base (3), also constitute a rotation push rod shaft (32) and be provided with a rotation push rod back-moving spring axle (33); Described rotation push rod (4) is arranged on the rotation push rod shaft (32) towards an end end of said socket (2) rotationally, and the middle part of described rotation push rod back-moving spring (6) is nested with on rotation push rod back-moving spring axle (33).

3. the interlock of drawout breaker according to claim 2; It is characterized in that described rotation pushrod actuation device (5) comprises a vertical push rod (51) and a spring (52); Vertically push rod (51) is slidingly matched with described vertical push rod sliding tray (31), on this vertical push rod (51), offers a pilot pin groove (511), and described vertical push rod pilot pin (311) probes in this pilot pin groove (511); Spring (52) is located in the sliding tray (31); The upper end of this spring (52) is bearing on the roof of said vertical push rod sliding tray (31), and the lower end is bearing on the spring base (521), wherein: constitute a boss (512) in the upper end of vertical push rod (51) and towards a side of said rotation push rod (4); This boss (512) contacts with rotation push rod (4), orders about rotation push rod (4) by boss (512) and rotates.

4. the interlock of drawout breaker according to claim 3; It is characterized in that going up and constituting a pair of parallel rolling member axle bed (41) towards a side of said vertical push rod (51) at described rotation push rod (4); This is provided with a rolling member axle (411) to rolling member axle bed (41); And rolling member axle (411) is provided with a rolling member (4111), and this rolling member (4111) contacts with described boss (512).

5. the interlock of drawout breaker according to claim 4 is characterized in that described rolling member (4111) is roller shell, roller bearing or needle bearing.

6. the interlock of drawout breaker according to claim 1, it is characterized in that described rotation push rod (4) and the corresponding end end of said drive link (112) constitute one be used to promote drive link (112) cut somebody's hair (42).

7. the interlock of drawout breaker according to claim 1 is characterized in that described rotation push rod back-moving spring (6) is torsion spring or stage clip.

8. the interlock of drawout breaker according to claim 1 and 2; It is characterized in that on described base (3), having one is used for said rotation push rod (4), rotation pushrod actuation device (5) and rotation push rod back-moving spring (6) are covered the cover plate (7) that protects; Also have one on the said base (3) and be used for a plurality of first auxiliary sections (34) of fixing with cover plate (7), and go up and have second auxiliary section (71) that quantity equates with first auxiliary section (34) in position corresponding to first auxiliary section (34) at cover plate (7).

9. the interlock of drawout breaker according to claim 8 is characterized in that then described second auxiliary section (71) is the fourth of the twelve Earthly Branches when described first auxiliary section (34) is tenon; When described first auxiliary section is the period of the day from 5 am. to 7 am., then described second auxiliary section (71) is a tenon.

10. The interlock of drawout breaker according to claim 1 is characterized in that the top of described base (3) constitutes a plurality of a plurality of base alignment pins (36) that are used for the base fixing hole of fixing with the back plate of described breaker body (1) (35) and are used for equally matching with the back plate of breaker body (1)

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