CN211404426U - Reclosing device of circuit breaker - Google Patents

Abstract

The utility model discloses a reclosing device of circuit breaker, including drive structure, gear train and setting up the separation and reunion structure between driving gear and drive structure, the separation and reunion structure includes the mounting groove of shaping on the gear train, and set up clutch pulley and locating part in the mounting groove, and the butt sets up the elastic component on the clutch pulley top surface; the ratchet wheel is pre-positioned in the mounting groove by the aid of the one-way positioning structure arranged between the mounting groove and the clutch wheel, so that the triggering distance between the clutch wheel and the pawl can be greatly shortened, when the power structure drives the gear set to rotate in a one-way closing mode, a long idle stroke between the clutch wheel and the pawl can be avoided, waiting time is greatly reduced, closing time of a circuit breaker is shortened, closing time is guaranteed to be within a specified reclosing range, and the use performance of a product is improved.

Description

Reclosing device of circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to reclosing lock device of circuit breaker.

Background

Along with the popularization of the intelligent power grid, the circuit breaker product of the power grid terminal execution mechanism is required to have automatic tripping and closing functions when executing upper end signals, wherein the plastic shell type circuit breaker is often used as a terminal switch or a branch switch in a low-voltage power distribution system and plays a role in protecting a power circuit and mechanical equipment in real time.

For example, chinese patent document CN203351525U discloses a novel electric operating mechanism for a molded case circuit breaker, which includes a gear, a rotary table, and a crank, wherein the gear, the rotary table and the crank are fixedly connected, the rotary table includes a follower fixed on the gear and a ratchet wheel linked with a motor shaft, a circular hole suitable for rotation of the ratchet wheel is formed in the follower, a stopper tooth is arranged on the inner side of the circular hole, the stopper tooth is a pawl, a sliding groove is formed in the follower, the stopper tooth and the sliding groove form a sliding fit, the ratchet wheel and the stopper tooth form a ratchet wheel and pawl fit, and a cover plate needs to be additionally mounted on the follower after the ratchet wheel is mounted, so as to prevent the ratchet. In summary, the ratchet wheel and the stop block teeth are arranged in the circular hole of the follower, three stop blocks are equally arranged in the circular hole, six or more ratchets are usually required to be arranged on the periphery of the ratchet wheel at equal intervals, the thickness of the designed ratchets is increased, and the mounting height matched with the gear is higher.

According to the plastic case circuit breaker, after the reclosing mechanism is installed, the height and the production cost of the reclosing mechanism can be greatly increased, in order to effectively reduce the height of a product and meet the field installation requirement, the existing method is to reduce the installation height of a ratchet wheel and simplify the forming process of the reclosing mechanism, as shown in figure 9, a wide and flat ratchet wheel 01 with only two ratchet teeth 02 is arranged in a circular hole of a follower, and the ratchet wheel and the follower are arranged on one side surface of a gear, the structural strength requirement can be met only by increasing the thickness of the ratchet wheel due to the fact that the tooth width of each ratchet tooth of a traditional circular ratchet wheel is small and the size of each ratchet tooth of the traditional circular ratchet wheel is fixed, and after the number of the ratchet teeth of the ratchet wheel 01 shown in figure 9 is reduced, the tooth width of the two ratchet teeth 02 can be made wider. However, the fitting installation of the ratchet wheel and the pawl still has the following problems in practical use: 1. the ratchet wheel is arranged on the surface of the gear through the follower, the height of the reclosing mechanism is not favorably reduced, the ratchet wheel is stressed and is easy to rotate in the mounting groove, the mounting distance between the ratchet on the ratchet wheel and the pawl is difficult to guarantee, the mounting stability is poor, so that the distance between the ratchet of the ratchet wheel and the pawl is far, a long idle stroke is generated when the motor drives the ratchet wheel to start, the waiting time is long, the closing time is prolonged, even the upper limit time specified by reclosing is exceeded, and the use performance of a product is influenced; 2. when the ratchet wheel and the pawl are installed in a matched mode and transmitted, the pawl is often clamped due to the position relation, namely the pawl abuts against the ratchet teeth under uneven stress, the ratchet wheel is jacked to tilt upwards, the ratchet wheel and the pawl are slightly staggered, clamping cannot be performed mutually, the cover plate needs to be disassembled, the positions of the ratchet wheel and the pawl need to be adjusted again, operation is inconvenient, and normal work of a product is affected.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lie in overcoming among the prior art ratchet can take place the autorotation phenomenon when the installation and be separated by far away with the pawl, so that ratchet rotation has one section idle stroke, lead to the closing time extension, and take place the screens phenomenon because of slight dislocation easily between ratchet and the pawl, influence the problem of the normal work of product, thereby a can fix a position installation separation and reunion wheel is provided, and can calibrate separation and reunion wheel mounted position in order to avoid appearing the screens phenomenon, shorten closing time, guarantee the reclosing device of circuit breaker normal work.

For solving the technical problem, the utility model provides a reclosing device of circuit breaker, including install in the drive structure and the drive mechanism of circuit breaker casing, the drive structure passes through drive mechanism drive circuit breaker handle execution divide-shut brake action, drive mechanism include with the gear train that drive structure cooperation transmission is connected, be equipped with the separation and reunion structure on one of them gear of gear train or two gears, the separation and reunion structure is used for making the gear in the gear train form the transmission cooperation in single direction, the separation and reunion structure includes: the gear set comprises a mounting groove formed on the gear set, a clutch wheel arranged in the mounting groove, and an elastic piece abutted to the top surface of the clutch wheel, which is back to the mounting groove; the one-way positioning structure is arranged between the mounting groove and the clutch wheel and used for enabling the clutch wheel to be in positioning fit with the mounting groove when the rotation direction of the clutch wheel is consistent with the single transmission fit direction of the gear.

As a preferable scheme, the one-way positioning structure comprises at least one upper positioning block arranged on the bottom surface of the clutch wheel and at least one lower positioning block correspondingly arranged in the mounting groove, and a limiting part which can form a limiting fit with the clutch wheel when the upper positioning block is matched and abutted with the lower positioning block is further arranged in the mounting groove.

As a preferable scheme, the mounting groove comprises a circular groove suitable for accommodating the clutch wheel and a strip-shaped groove communicated with and arranged on the outer side of the circular groove, the limiting member comprises a pawl and a pawl spring which are mounted in the strip-shaped groove, and the clutch wheel is provided with two ratchets which are matched and abutted with the pawl.

As a preferred scheme, the driving structure includes penetrating the drive pivot in the mounting groove, the separation and reunion wheel through the shaft hole on it with the drive pivot linkage sets up, the center of circular recess is provided with the through-hole that can supply the drive pivot passes.

As a preferred scheme, the driving structure comprises a driving rotating shaft penetrating into the mounting groove, and the clutch wheel is in linkage arrangement with the driving rotating shaft through a shaft hole in the clutch wheel.

Preferably, the mounting groove comprises a circular groove adapted to accommodate the clutch wheel, and a strip-shaped groove accommodating the pawl member and communicating with the circular groove, and a through hole for the driving shaft to pass through is formed in the center of the circular groove.

As a preferred scheme, mounting groove with the clutch pulley corresponds respectively and is the setting of circular structure, the separation and reunion structure includes: set up along circumference interval in a plurality of first spacing archs in the mounting groove to and correspond set up in the spacing arch of second of clutch pulley bottom surface, first spacing arch and the spacing arch of second are in form the spacing cooperation of counterbalance during clutch pulley forward rotation, and but relative slip is in order to relieve during clutch pulley reverse rotation spacing cooperation.

As a preferable scheme, a guiding inclined plane structure is arranged between the first limiting protrusion and the second limiting protrusion, and the guiding inclined plane structure comprises a first arc inclined plane arranged on the first limiting protrusion facing the clutch wheel and a second arc inclined plane arranged on the second limiting protrusion and matched with the first arc inclined plane to slide.

As a preferred scheme, an annular boss is formed on the bottom surface of the clutch wheel around the shaft hole, and the second limiting protrusion or the upper positioning block is not higher than the annular boss.

As a preferred scheme, install on the circuit breaker casing and cover mounting groove's apron structure, the elastic component cover is established on the drive pivot, its both ends respectively the butt in the clutch pulley with structural the apron.

As a preferred scheme, the gear set comprises a driving gear connected with the driving structure and a driven gear meshed with the driving gear, and the clutch structure is arranged on one side of the driving gear; the transmission mechanism further comprises a transmission rod connected with the driven gear and the breaker handle, and the driving gear and the breaker handle are arranged in a staggered mode in an inclined mode.

As a preferable scheme, the circuit breaker further comprises a manual switching-on/off mechanism which is installed on the circuit breaker shell and used for driving the transmission rod to act, and the manual switching-on/off mechanism comprises: the circuit breaker comprises an operating shaft and a rotary disc, wherein the operating shaft is rotatably arranged on the shell of the circuit breaker, the rotary disc is in linkage with the operating shaft, two driving arms are formed on two sides of the rotary disc in an extending mode, and a fixing shaft matched with the driving arms is arranged at one end of a transmission rod.

Compared with the prior art, the technical scheme of the utility model have the following advantage:

1. the reclosing device of the circuit breaker provided by the utility model further reduces the installation height of the reclosing device by arranging the installation groove capable of accommodating the clutch wheel on the gear set, further reduces the overall height of the product, and plays a role of pre-positioning the clutch wheel in the installation groove through the one-way positioning structure when assembling the clutch wheel, and prevents the clutch wheel from freely rotating in the installation process under the action of the elastic piece, the installation stability is good, the installation and matching of the clutch wheel in the installation groove can be quickly realized, the installation efficiency is favorably improved, the triggering distance between the clutch wheel and the pawl can be greatly shortened according to the reasonable position design of the one-way positioning structure, the advantage of the design is that when the power structure drives the gear set to do one-way rotation closing through the clutch structure, the occurrence of a long idle stroke between the clutch wheel and the pawl can be avoided, the waiting time is greatly reduced, the closing time of the circuit breaker is shortened, the closing time is guaranteed to be within a specified range of reclosing, the closing contact speed is high, the delay phenomenon does not exist, and the use performance of a product is improved.

2. The utility model provides a reclosing device of circuit breaker, through the top surface butt of clutch pulley sets up an elastic component, the elastic component is exerted to the clutch pulley and is supported the elasticity pressure that leans on in the mounting groove, this kind of structural setting, when the clutch pulley is pushed up by the pawl part and takes place slope and block and hinder the phenomenon, the elastic force with the help of the elastic component can make the clutch pulley of slope perk reset to suitable position, the clutch pulley is portable in order to realize its position automatically regulated along perpendicular to installation recess bottom direction under the drive of elastic component promptly, thereby shift or the dislocation with the stuck point position between clutch pulley and the pawl part, block and hinder the phenomenon with eliminating the two and producing, reach calibration clutch pulley, the effect of the slight dislocation of pawl part, promote the transmission stability between clutch pulley and the pawl part.

3. The utility model provides a reclosing device of circuit breaker, when the power structure drives the clutch pulley through the drive pivot to close and rotate, the first spacing bulge on the clutch pulley and the second spacing bulge in the mounting groove form spacing cooperation to drive the driving gear to rotate forward, thereby realizing the linkage cooperation of the driving gear and the drive pivot, and the first spacing bulge and the second spacing bulge can slide relatively when the driving gear rotates reversely, thereby relieving the linkage relation of the driving gear and the drive pivot, playing the role of preventing reversion to the drive pivot, the clutch structure of the structural design can be used for cutting off and transmitting the driving force generated by the power structure between the driving gear and the drive pivot, the matching transmission is reliable, and the clutch pulley and the mounting groove only need to be designed into a circular structure, the structure is simple and the forming is convenient, thus, the arrangement of parts such as ratchet wheel and pawl is saved, the assembly process is reduced, and the manufacturing cost is reduced.

4. The utility model provides a reclosing device of circuit breaker, when the driving gear receives the exogenic action to take place the derotation, first spacing bellied first circular arc inclined plane can be followed slide on the spacing bellied second circular inclined plane of second, can prevent like this that the driving gear from driving the separation and reunion wheel and take place the reversal phenomenon, so can avoid driving the pivot axle to be forced the derotation and lead to the motor to damage. In the process, the two limiting protrusions are in contact with each other up and down to enable the clutch wheel to be lifted to a smaller height in the mounting groove, and the clutch wheel is under the action of elastic pressure of the elastic piece, so that the clutch wheel can descend and move after the two limiting protrusions slide relatively, the clutch wheel and the driving gear are in reliable contact all the time, mounting stability is good, and opening and closing of the circuit breaker are achieved reliably.

5. The utility model provides a reclosing lock device of circuit breaker, the spacing arch of second or go up the locating piece and be not higher than annular boss sets up, and this kind of structure setting has guaranteed the installation roughness of clutch pulley in mounting groove, avoids the clutch pulley the crooked condition of empting to appear when the installation, and installation stability is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a reclosing device of a circuit breaker according to the present invention;

fig. 2 is a schematic structural view of the reclosing device of the utility model;

fig. 3 is a schematic structural view of the lower positioning block of the utility model on the driving gear;

fig. 4 is a schematic structural view of an upper positioning block on a clutch wheel of the utility model;

fig. 5 is a schematic structural view of another embodiment of the reclosing device of the utility model;

fig. 6 is a schematic view of an installation structure of the first limiting protrusion of the utility model;

fig. 7 is a schematic view of an installation structure of a second limiting protrusion of the utility model;

fig. 8 is a schematic sectional view of the clutch structure of the present invention;

FIG. 9 is a schematic view of a ratchet according to the prior art;

description of reference numerals: 1-driving structure, 11-driving rotating shaft, 2-gear set and 21-driving gear. 22-driven gear, 3-clutch structure, 30-mounting groove, 301-circular groove, 302-strip-shaped groove, 31-clutch wheel, 311-shaft hole, 312-annular boss, 32-limiting piece, 33-elastic piece, 34-ratchet, 35-first limiting protrusion, 351-first circular arc inclined plane, 36-second limiting protrusion, 361-second circular arc inclined plane, 41-upper positioning block, 42-lower positioning block, 5-cover plate structure, 6-breaker shell, 8-transmission rod, 81-fixed shaft, 9-manual switching-closing mechanism, 91-operating shaft, 92-rotating disc and 93-driving arm.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

this embodiment provides a reclosing device of circuit breaker as shown in fig. 1-8, including install in drive structure 1 and the drive mechanism of circuit breaker casing 6, drive structure 1 passes through drive mechanism drive circuit breaker handle execution divide-shut brake action, drive mechanism include with drive structure cooperation transmission is connected gear train 2, be equipped with separation and reunion structure 3 on 2 of gear train gears or two gears, separation and reunion structure 3 is used for making the gear in the gear train form the transmission cooperation in single direction, makes promptly through separation and reunion structure 3 gear train 2 with form the linkage cooperation or remove the linkage relation between the drive structure 1, be used for cutting off or transmitting and come from drive structure's drive power: the clutch structure 3 includes: a mounting groove 30 formed on the gear set 2, a clutch wheel 31 arranged in the mounting groove 30, and an elastic member 33 abutted against the top surface of the clutch wheel 31 facing away from the mounting groove 30, wherein the clutch wheel can rotate in the mounting groove 30 under the drive of the drive structure 1; a one-way positioning structure is arranged between the mounting groove 30 and the clutch wheel 31, and the one-way positioning structure is used for enabling the clutch wheel 31 to form positioning fit with the mounting groove 30 when the rotation direction of the clutch wheel is consistent with the single transmission fit direction of the gear, so that the clutch wheel is driven by the driving structure 1 to drive the gear to rotate in a one-way mode through the one-way positioning structure.

In the above embodiment, the mounting groove 30 capable of accommodating the clutch block and the pawl component is arranged on the driving gear 2, so that the mounting height of the reclosing device is further reduced, the overall height of the product is further reduced, when the clutch wheel 31 is assembled, the clutch wheel 31 is pre-positioned in the mounting groove through the one-way positioning structure, the clutch wheel can be prevented from freely rotating in the mounting process under the abutting action of the elastic part 33, the mounting stability is good, the initial mounting position of the clutch wheel is limited, the mounting and matching of the clutch wheel 31 in the mounting groove 30 can be quickly realized, the mounting efficiency is favorably improved, the triggering distance between the clutch wheel 31 and the pawl can be greatly shortened according to the reasonable position design of the one-way positioning structure, and the design has the advantages that when the power structure drives the gear set to perform one-way closing rotation through the clutch structure 3, the long idle stroke between the clutch wheel and the pawl can be avoided, the waiting time is greatly reduced, the closing time of the circuit breaker is shortened, the closing time is guaranteed to be within a specified range of reclosing, the closing contact speed is high, the delay phenomenon is avoided, and the service performance of a product is improved.

In this embodiment, the elastic member 33 is sleeved on the pressure spring structure of the driving shaft 11, one end of the elastic member 33 presses against the top surface of the clutch wheel 31 to apply an elastic pressure against the clutch wheel in the mounting recess, and this structure, when the clutch wheel 31 is pushed by the pawl component to generate the phenomena of inclination and blockage, the inclined and tilted clutch wheel can be reset to a proper position by the elastic force of the elastic piece 33, namely, the clutch pulley is driven by the elastic member 33 to be movable in a direction perpendicular to the bottom of the mounting recess 30 to achieve automatic position adjustment thereof, therefore, the clamping point position between the clutch wheel 31 and the pawl component is shifted or dislocated, so that the clamping phenomenon generated between the clutch wheel 31 and the pawl component is eliminated, the effect of calibrating the slight dislocation of the clutch wheel 31 and the pawl component is achieved, and the transmission stability between the clutch wheel and the pawl component is improved.

In order to ensure the installation stability of the clutch structure 3 in the installation groove, the circuit breaker shell 6 is provided with a cover plate structure 5 covering the installation groove 30, two ends of the elastic piece are respectively abutted to the clutch wheel 31 and the cover plate structure 5, so that the clutch wheel 31 and the installation groove 30 are kept in reliable contact, and the clutch wheel 31 with the structural design can move up and down in the installation groove to adjust the position thereof, so that the connection position between the clutch wheel 31 and the pawl component can be adjusted in a self-adaptive manner, and the phenomenon of dislocation and blockage is avoided.

As shown in fig. 3 to 4, the one-way positioning structure includes an upper positioning block 41 disposed on the bottom surface of the clutch pulley 31, and a lower positioning block 42 correspondingly arranged in the mounting groove 30, a limiting member 32 which can form a limiting fit with the clutch wheel 31 when the upper positioning block 41 is matched and abutted against the lower positioning block 42 is further arranged in the mounting groove, therefore, the positioning and installation of the clutch wheel in the installation groove can be realized, the clutch wheel 31 and the limiting piece 32 can be ensured to be close to each other to quickly form limiting matching, the limiting piece 32 is a pawl component, when the power structure drives the clutch wheel to rotate, the clutch wheel 31 is abutted to push the limiting part 32 to drive the gear set to perform closing rotation, so that the triggering time between the clutch wheel and the limiting part is greatly shortened, and the closing efficiency of the reclosing device driving the circuit breaker is improved.

The specific structures of the driving structure and the clutch structure are described in detail below with reference to fig. 2 to 8:

the driving structure is preferably a motor, and includes a driving rotating shaft 11 penetrating into the mounting groove 30, the clutch wheel 31 is linked with the driving rotating shaft 11 through a shaft hole 311 on the mounting groove, wherein the mounting groove 30 includes a circular groove 301 adapted to accommodate the clutch wheel 31, and a bar groove 302 communicated with and disposed outside the circular groove, the limiting member 32 includes a pawl and a pawl spring mounted in the bar groove, the clutch wheel has two ratchet teeth 34 engaged and abutted with the pawl member, a through hole for the driving rotating shaft 11 to pass through is disposed in the center of the circular groove 301, when the motor drives the clutch wheel 31 to close and rotate, the ratchet teeth on the clutch wheel 31 are engaged and abutted with the pawl to drive the gear set 2 to rotate in the forward direction, and if the gear set 2 rotates in the reverse direction, the ratchet teeth slide from the end inclined plane of the pawl without being engaged, the messenger the pawl is pressed partially the pawl spring is flexible action in the bar recess, and this kind of separation and reunion structure setting can prevent that the motor is in take place to rotate when the driving gear 2 reverses, plays the guard action to the motor.

As a preferred arrangement, referring to fig. 2 and 5, the gear set 2 includes a driving gear 21 connected to the driving structure through a clutch structure, and a driven gear 22 engaged with the driving gear 21, the clutch structure 3 is preferably disposed on the driving gear 21, that is, the mounting groove, the clutch wheel and the one-way positioning structure are disposed on one side of the driving gear 21, and of course, the mounting groove and the clutch wheel may be disposed on the driven gear 22 in an optional manner in practical operation. Further, drive mechanism is still including connecting driven gear 22 with the transfer line 8 of circuit breaker handle, driving gear 21 and driven gear 22 are the unidirectional rotation by the motor drive to on transmitting the circuit breaker handle through the cooperation of driving gear, driven gear and transfer line with the drive power of motor, realize the divide-shut brake operation of circuit breaker.

Although the above embodiments have been described with reference to the specific arrangement in which the clutch structure is provided by the engagement of the clutch pulley and the pawl member, it is apparent that the clutch structure is not limited to the above one. Therefore, the reclosing device of this embodiment is further improved in design of the clutch structure, so as to better simplify the structural arrangement of the reclosing device, as shown in fig. 5 to 8, the mounting groove 30 and the clutch pulley 31 are respectively and correspondingly arranged in a circular structure, and the clutch structure 3 includes: along the circumference interval set up in a plurality of first spacing archs 35 in the mounting groove 30 to and correspond set up in the spacing arch 36 of second of clutch wheel 31 bottom surface, first spacing arch 35 and the spacing arch 36 of second are in form the spacing cooperation of counterbalance when clutch wheel 31 forward rotation, and can relative slip in order to relieve when clutch wheel 31 reverse rotation spacing cooperation. In summary, after the first limiting protrusion and the second limiting protrusion are arranged between the clutch wheel 31 and the mounting groove 30, an upper positioning block and a lower positioning block do not need to be arranged, and the clutch wheel can be positioned in the mounting groove by the first limiting protrusion 35 and the second limiting protrusion 36, so that the mounting structure is further simplified. It should be noted that the forward rotation and the reverse rotation in this document only indicate that the rotation directions of two rotations of a certain component are opposite, and do not indicate the actual rotation direction thereof, for example, the driving gear rotates in the forward direction to realize the closing operation of the circuit breaker.

According to the above structure, when the motor drives the clutch wheel 31 to switch on and rotate through the driving shaft 11, the driving gear 2 is driven to rotate in the forward direction through the limit fit formed by the first limit protrusion 35 on the clutch wheel 31 and the second limit protrusion 36 in the mounting groove 30, so that the linkage fit of the driving gear and the driving shaft is realized, and the first limit protrusion 35 and the second limit protrusion 36 can slide relatively when the driving gear 2 rotates in the reverse direction, so as to release the linkage relationship between the driving gear and the driving shaft, and play a role in preventing the driving shaft 11 from rotating reversely, the clutch structure with the structure design can be used for cutting off and transmitting the driving force generated by the power structure 1 between the driving gear and the driving shaft 11, the matching transmission is reliable, and the clutch wheel 31 and the mounting groove 30 only need to be designed into a circular structure, simple structure and shaping convenience just so have just saved the setting of parts such as ratchet and pawl, have reduced assembly process, reduce manufacturing cost. A person skilled in the art can select a specific setting manner of the clutch structure according to the above description, and other equivalent manners of the clutch structure 3 are not described in detail herein.

As shown in fig. 6 to 7, the first limiting protrusion 35 and the second limiting protrusion 36 are arc-shaped protrusions, respectively, a guiding inclined plane structure is disposed between the first limiting protrusion 35 and the second limiting protrusion 36, and the guiding inclined plane structure includes a first arc inclined plane 351 disposed on the first limiting protrusion 35 facing the clutch pulley, and a second arc inclined plane 361 disposed on the second limiting protrusion 36 and sliding in cooperation with the first arc inclined plane 351. When the driving gear 2 is reversely rotated under the action of external force, the first arc inclined surface of the first limiting protrusion 35 slides over the second arc inclined surface of the second limiting protrusion 36, so that the driving gear 2 is prevented from driving the clutch wheel 31 to generate a reverse rotation phenomenon, and the driving shaft 11 is prevented from being forced to reversely rotate to cause the damage of the motor. In the process, the clutch wheel 31 is lifted to a smaller height in the mounting groove due to the contact of the upper surface and the lower surface of the two limiting protrusions, and the clutch wheel 31 is under the action of elastic pressure of the elastic piece 33, so that the clutch wheel 31 can descend and move after the two limiting bosses slide relatively, the clutch wheel 31 and the driving gear 2 are always kept in reliable contact, the mounting stability is good, and the reclosing operation of the circuit breaker is reliably realized.

As shown in fig. 4 and 7, an annular boss 312 is formed on the bottom surface of the clutch wheel 31 around the shaft hole 311, and the second limiting protrusion 36 or the upper positioning block 41 is not higher than the annular boss, so that the installation flatness of the clutch wheel in the installation groove is ensured, the clutch wheel 31 is prevented from tilting during installation, and the installation stability is good.

The circuit breaker that this embodiment provided shortens circuit breaker casing length in order to reach the purpose of reducing the product volume, for this reason, driving gear 2 with the setting of staggering of circuit breaker handle slant to satisfy the installation requirement of motor after circuit breaker casing length reduces.

The reclosing device of this embodiment further includes a manual switching-on/off mechanism 9 installed on the circuit breaker housing 6 for driving the transmission rod 8 to move, as shown in fig. 1-2, the manual switching-on/off mechanism 9 includes: the rotatable setting in the operating shaft 91 of circuit breaker casing 6, and with the carousel 92 that the operating shaft 91 linkage set up, the shaping is extended to carousel 92 both sides has two actuating arms 93, transfer line 8 one end be provided with actuating arm 93 complex fixed axle 81, the operating shaft top is equipped with the handle hole, this kind of structure setting, when needs manual divide-shut brake, through the operating shaft 91 of external force rotation circuit breaker casing 6, thereby drive carousel 92 is rotatory together, and in carousel 92 rotation process, the longer actuating arm 93 in its both sides is close to and acts on fixed axle 81 to promote transfer line and driven gear and make circular motion, realize the manual divide-shut brake operation of circuit breaker.

When the circuit breaker is opened through the manual opening and closing mechanism 9, the driven gear 22 and the driving gear 21 can be driven to rotate reversely, therefore, the linkage relation between the driving gear 2 and the driving rotating shaft 11 is relieved through the clutch structure 3, the driving rotating shaft of the motor cannot be driven to rotate reversely when the driving gear 2 rotates, and the protection effect on the motor is achieved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. The utility model provides a reclosing device of circuit breaker, is including installing in drive structure (1) and the drive mechanism of circuit breaker casing (6), drive structure (1) is passed through drive mechanism drive circuit breaker handle execution divide-shut brake action, drive mechanism include with gear train (2) that drive structure (1) cooperation transmission is connected, be equipped with on one of them gear of gear train (2) or two gears separation and reunion structure (3), separation and reunion structure is used for making gear in gear train (2) forms transmission cooperation, its characterized in that in the single direction:

the clutch structure (3) includes: the gear comprises a mounting groove (30) formed on the gear, a clutch wheel (31) arranged in the mounting groove (30), and an elastic piece (33) abutted to the top surface of the clutch wheel (31) opposite to the mounting groove (30); a one-way positioning structure is arranged between the mounting groove (30) and the clutch wheel (31), and the one-way positioning structure is used for enabling the clutch wheel to be in positioning fit with the mounting groove when the rotation direction of the clutch wheel is consistent with the single transmission fit direction of the gear.

2. The reclosing device of a circuit breaker according to claim 1, characterized in that: the one-way positioning structure comprises at least one upper positioning block (41) arranged on the bottom surface of the clutch wheel (31) and at least one lower positioning block (42) correspondingly arranged in the mounting groove (30), and a limiting part (32) which can be matched with the clutch wheel (31) in a limiting manner when the upper positioning block (41) and the lower positioning block (42) are matched and abutted is further arranged in the mounting groove (30).

3. The reclosing device of a circuit breaker according to claim 2, characterized in that: the mounting groove (30) comprises a circular groove (301) suitable for accommodating the clutch wheel (31) and a strip-shaped groove (302) communicated with and arranged on the outer side of the circular groove (301), the limiting piece (32) comprises a pawl and a pawl spring which are mounted in the strip-shaped groove (302), and the clutch wheel is provided with two ratchet teeth (34) which are matched and abutted with the pawl.

4. The reclosing device of a circuit breaker according to claim 3, characterized in that: drive structure (1) is including penetrating drive pivot (11) in mounting groove (30), clutch wheel (31) through shaft hole (311) on it with drive pivot (11) linkage sets up, the center of circular recess (301) is provided with and supplies the through-hole that drive pivot (11) passed.

5. Reclosing device of a circuit breaker according to any of the claims 1 to 4, characterized in that: mounting groove (30) with clutch pulley (31) corresponds respectively and is the setting of circular structure, clutch structure (3) include: along the circumference interval set up in a plurality of first spacing archs (35) in mounting groove (30) to and correspond set up in spacing protruding (36) of second of clutch pulley (31) bottom surface, first spacing protruding (35) and second are spacing protruding (36) are in form the spacing cooperation of counterbalance during clutch pulley (31) forward rotation, and but relative slip is in order to relieve during clutch pulley (31) antiport spacing cooperation.

6. The reclosing device of a circuit breaker according to claim 5, characterized in that: be provided with direction inclined plane structure between first spacing arch (35) and second spacing arch (36), direction inclined plane structure includes towards the clutch pulley sets up first circular arc inclined plane (351) on first spacing arch (35), and set up on second spacing arch (36) and with first circular arc inclined plane (351) cooperation gliding second circular arc inclined plane (361).

7. The reclosing device of a circuit breaker according to claim 6, further comprising: an annular boss (312) is formed on the bottom surface of the clutch wheel (31) around the shaft hole of the clutch wheel, and the second limiting protrusion (36) or the upper positioning block (41) is not higher than the annular boss.

8. The reclosing device of a circuit breaker according to claim 4, characterized in that: install on circuit breaker casing (6) and cover apron structure (5) of mounting groove (30), elastic component (33) cover is established on drive pivot (11), its both ends respectively the butt be in clutch pulley (31) with on apron structure (5).

9. Reclosing device of a circuit breaker according to any of the claims 6 to 8, characterized in that: the gear set (2) comprises a driving gear (21) connected with the driving structure and a driven gear (22) meshed with the driving gear (21), and the clutch structure is arranged on one side of the driving gear (21); the transmission mechanism further comprises a transmission rod (8) connected with the driven gear (22) and the breaker handle, and the driving gear and the breaker handle are arranged in a staggered mode in an inclined mode.

10. The reclosing device of a circuit breaker according to claim 9, further comprising: still including install in be used for the drive on circuit breaker casing (6) manual divide-shut brake mechanism (9) of transfer line (8) action, manual divide-shut brake mechanism (9) include: the circuit breaker is characterized by comprising an operating shaft (91) rotatably arranged on the circuit breaker shell (6) and a rotary table (92) in linkage with the operating shaft (91), two driving arms (93) are formed on two sides of the rotary table (92) in an extending mode, and a fixed shaft (81) matched with the driving arms (93) is arranged at one end of a transmission rod (8).

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