CN213519838U

CN213519838U - Electric operating mechanism of circuit breaker

Info

Publication number: CN213519838U
Application number: CN202023049586.0U
Authority: CN
Inventors: 罗呼云; 陈建; 高海亮
Original assignee: Zhejiang Alst Electrical Co ltd
Current assignee: Zhejiang Alst Electrical Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-06-22
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses a circuit breaker electric operating mechanism, including casing, frame and drive assembly, its characterized in that, the casing is inside to be equipped with the mounting panel and vertically to set up the motor in the casing, the mounting panel include first mounting panel and second connecting plate, its casing is box-like, the frame gomphosis is used for fixing drive assembly in the casing, drive assembly be located the upper and lower two sides of frame respectively and hug closely the frame setting, motor spindle meshing connects the gear train, the output meshing of gear train connects drive gear, drive gear circumference fixed connection wheel board still includes the slider that is used for divide-shut brake, the other end of drive gear is for the manual operation axle that has the divide-shut indication subassembly of floodgate and the slip push pedal that is used for switching control; compared with the prior art the utility model has the advantages of simple structure and reasonable design, the stable performance is reliable, avoid the maloperation, it makes its miniaturization more with the rational design of inner structure, and has efficient transmission ratio gear group.

Description

Electric operating mechanism of circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field involves a circuit breaker electric operating mechanism.

Background

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition for a predetermined time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, the boundary line of the high voltage and the low voltage is divided more clearly, the circuit breaker is generally called as a high-voltage electrical appliance with the voltage of more than 3kV, the circuit breaker can be used for distributing electric energy, an asynchronous motor is not frequently started, a power supply circuit, the motor and the like are protected, when the circuit breaker has faults of serious overload, short circuit, undervoltage and the like, the circuit breaker can be automatically cut off, and the function of the circuit breaker is equivalent to the combination of a fuse. Furthermore, no parts need to be changed after breaking the fault current. At present, it has been widely used. In the plastic shell type circuit breaker, the electric operating device can be used for remotely carrying out automatic opening and automatic reclosing on the circuit breaker, so that the remote control of the circuit breaker is realized, and the plastic shell type circuit breaker has important significance for realizing automation and intellectualization of a low-voltage power distribution system. The existing circuit breaker electric operating mechanism has the disadvantages of multiple used elements, complex process, high cost, multiple faults, complex operation and slow response speed.

The electric operating mechanism is a special accessory for the plastic shell type circuit breaker, and can electrically close, open and detain the circuit breaker again in a long distance after being matched with the circuit breaker so as to realize the centralized and automatic control of the power transmission and distribution network. The existing electric operating mechanism used for the molded case circuit breaker is not concise in structural design, so that the whole height of the electric operating mechanism is very high, and the electric operating mechanism occupies a large space. In addition, in order to enable a user to directly observe the working state of the circuit breaker, the existing electric operating mechanism is further provided with a switching-on/off indicating assembly, so that the existing circuit breaker electric operating mechanism is more in used elements, large in occupied space of the framework, complex in process, high in cost, more in faults, complex in operation, slower in response speed and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the electric operating mechanism of circuit breaker who proposes.

The utility model provides a technical scheme that its technical problem and take is: an electric operating mechanism of a circuit breaker comprises a shell, a rack and a driving assembly, and is characterized in that a plurality of mounting plates used for the driving assembly to be in a shape like a Chinese character 'ji' and a motor vertically arranged in the shell are arranged in the shell, the mounting plates comprise a first mounting plate and a second connecting plate, the motor is positioned below the first mounting plate, a motor spindle of the motor penetrates through the first mounting plate and is connected with a gear set in a gear meshing manner, an output end of the gear set is connected with a driving gear in a meshing manner, the driving gear is axially fixed on the second connecting plate, a wheel plate with a guide block is arranged at one end penetrating through the rack, the wheel plate is fixedly linked with the driving gear in a circumferential rotating manner, the electric operating mechanism further comprises a sliding block which is matched with the wheel plate and is used for opening and closing, the sliding block is provided with a limiting groove and a sliding groove, and a, the guide block is hinged on the wheel plate, is positioned in the limiting groove and is driven by the wheel plate rotating in the circumferential direction to move along the edge of the limiting groove, and the guide block can drive the sliding block to move axially along the sliding rod when moving; and the other end of the driving gear is provided with a manual operation shaft with a switching-on and switching-off indicating assembly and a sliding push plate for switching control.

As a further arrangement of the scheme, the gear set comprises a plurality of gear pieces which are axially fixed relative to the rack, each gear piece comprises a large gear and a small gear which are axially and fixedly connected side by side with the same tooth pitch and different modules, and adjacent meshed gear pieces are arranged in a matched mode through the large gear and the small gear in a meshed mode and are used for amplifying and amplifying the driving force of the motor to the driving gear during working.

As a further arrangement of the scheme, the gear pieces are arranged in a staggered mode through the size difference ratio of the large gear and the small gear so as to reduce space occupation.

As a further arrangement of the above scheme, the housing is box-shaped, the frame is embedded in the housing for fixing the driving assembly, and the driving assembly is respectively located on the upper surface and the lower surface of the frame and is arranged to be closely attached to the frame.

As a further arrangement of the above scheme, the switching-on/off indicating assembly comprises an indicating disc which is circumferentially fixed with the driving gear and has two indicating colors, and an indicating port which is arranged on the shell and is eccentrically arranged relative to the indicating disc and used for observing the indicating disc.

As a further arrangement of the scheme, the electric control switch further comprises a sliding push plate, wherein a protrusion is arranged on the end face of the sliding push plate, which is in sliding connection with the shell, a slide rail groove matched with the protrusion is arranged on the shell, and the sliding push plate is used for sliding switching between manual control and electric control.

As a further arrangement of the above scheme, the guide block on the wheel plate is a bearing with an inner hole hinged to the wheel plate, the wheel plate is arranged in a cam rotating manner, and the edge protruding outwards is a triggering part.

As a further arrangement of the above scheme, a tact switch arranged right opposite to the side edge of the wheel plate is further arranged on the frame, and the tact switch is triggered by the trigger part of the wheel plate in the circumferential rotation process to act.

Has the advantages that: the utility model has simple structure, reasonable design, low cost and convenient use, reasonably designs the internal structure to be more miniaturized, has an efficient transmission ratio gear set, and improves the misoperation prevention and the performance stability, such as the design related to a sliding push plate, a gear set and a sliding block, thereby improving the overall safety performance of the product; secondly, this product carries out space utilization optimal design through the subassembly that will integrate for its whole electric operating mechanism's whole height reduces, has promoted the advantage of product miniaturization, and this product of the same driving motor of rational design through the gear train is stronger to the drive power of switching-on simultaneously, and its performance of the structure of this product design for prior art volume is littleer more superior, has good market perspective.

Drawings

Fig. 1 is a schematic structural diagram of the product of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic structural view of a gear assembly according to the present invention;

FIG. 4 is a schematic bottom view of the FIG. 2 assembly of the present invention;

FIG. 5 is a schematic view of the top view of the present invention;

fig. 6 is a cross-sectional view of the sliding push plate of the present invention.

Reference numerals: 1. a housing; 11. a frame; 2. a motor; 3. a gear set; 31. a gear member; 32. a bull gear; 33. a pinion gear; 4. a drive gear; 5. mounting a plate; 51. a first mounting plate; 52. a second mounting plate; 6. a wheel plate; 61. a guide block; 62. a trigger section; 7. a slider; 71. a limiting groove; 72. a sliding groove; 73. A slide bar; 8. a switching-on and switching-off indicating component; 91. an indicator panel; 82. an indicator port; 9. a manually operated shaft; 91. Sliding the push plate; 92. a protrusion; 12. a slide rail groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflicting with each other.

As shown in fig. 1-6, an electric operating mechanism for a circuit breaker includes a box-shaped housing 1, a plurality of driving components and a frame 11 embedded in the housing 1 for fixing the driving components, the driving components are respectively located on the upper and lower surfaces of the frame 11 and tightly attached to the frame 11, a plurality of mounting plates 5 for the driving components in a shape like a Chinese character ji and a motor 2 vertically arranged in the housing 1 are arranged inside the housing 1, the motor 2 penetrates through the frame 11 and is located inside the housing 1 to reduce the space height, the mounting plates 5 include a first mounting plate 51 and a second connecting plate 52, the motor 2 is located below the first mounting plate 51, a motor spindle 23 of the motor penetrates through the first mounting plate 51 and is provided with a gear set 3 in a gear engagement connection manner, the gear set 3 obtains a design combination of a high-efficiency transmission ratio through calculation, and the single gear of its constitution all articulates on frame 11 axially fixed, the output end gear meshing of gear train 3 is connected drive gear 4, rotate through motor 2 and drive gear 4 carry out work, drive gear 4 axial fixity sets up on second connecting plate 52, and its one end that runs through frame 11 sets up the wheel board 6 that has guide block 61, wheel board 6 and drive gear 4 fixed linkage circumferential direction rotate, can be driven by drive gear 4 and rotate relative to frame 11, still including and set up the slider 7 that is used for the divide-shut brake with wheel board 6 matching, slider 7 be provided with spacing groove 71 and sliding tray 72, frame 11 on still be provided with the slide bar 73 with sliding tray 72 matching, sliding tray 72 and sliding bar 73 match and set up through both cooperations, make slider 7 along the reciprocating sliding of fixed route under frame 11, the guide block 61 is hinged on the wheel plate 6, is positioned in the limit groove 71 and can be driven by the wheel plate 6 rotating in the circumferential direction to move along the edge 71 of the limit groove, and the guide block 61 can drive the sliding block 7 to move axially along the sliding rod 73 when moving; the other end of the driving gear 4 is connected with a manual operation shaft 9 with a switching-on and switching-off indicating assembly 8 and a sliding push plate 91 for switching control.

As a further arrangement of the above scheme, the gear set 3 comprises a plurality of gear pieces 31 axially fixed relative to the frame 11, the gear pieces 31 include a large gear 32 and a small gear 33 axially and fixedly connected side by side with the same pitch and different modules, and the adjacent meshed gear pieces 31 are arranged in a matching manner by the large gear 32 meshing with the small gear 33, so as to amplify and amplify the driving force of the driving gear 4 when the motor 2 works.

As shown in fig. 3, with the gear set 3 configured in the above scheme, each constituent gear member 31 of the gear set 3 is composed of a large gear 32 and a small gear 33 which are fixedly connected and have the same pitch, in a combined design of meshing transmission, the motor 2 from the source provides an initial rotational force to drive the large gear 32 of the first gear member 31 to rotate, the small gear 33 of the first gear member 31 synchronously rotates to drive the second gear member 31 to continue to provide a driving force for the rotation of the driving gear 4, and simultaneously, under the transformation of the transmission ratio of the large gear 32 and the small gear 33, the output rotational speed of the motor 2 is reduced and the torque is increased, each gear member 31 is arranged in a staggered manner under the modulus ratio of the large gear 32 and the small gear 33, compared with the existing driving assembly, the gear set 3 of the product has the characteristic of miniaturization and high-efficiency amplitude transmission ratio, so that the product has a smaller volume compared, but the driving force for the shunt switch is stronger.

As a further arrangement of the above solution, the gear members 31 are arranged in a staggered manner by the size difference ratio of the large gear 32 and the small gear 33 to reduce the space occupation.

As a further arrangement of the above scheme, the switching-closing indication assembly 8 includes an indication plate 81 fixed with two indication colors along the circumferential direction of the driving gear 4 and an indication port 82 arranged on the housing 1 and eccentrically arranged relative to the indication plate 81 for observing the indication plate 81, and the current state of the circuit breaker can be directly known through observation of the indication port 82.

As a further arrangement of the above scheme, the portable electronic device further comprises a sliding push plate 91, wherein a protrusion 92 is arranged on the end surface of the sliding push plate 91 in sliding connection with the housing 1, a slide rail groove 93 matched with the protrusion 92 is arranged on the housing 1, the sliding push plate 91 is used for sliding switching between manual control and electric control, and one end of the sliding push plate 91 is exposed out of the housing 1, so that the operation is convenient for controlling the sliding push plate all the time.

As a further arrangement of the above scheme, the guide block 61 on the wheel plate 6 is a bearing whose inner hole is hinged to the wheel plate 6, the wheel plate 6 is arranged in a cam rotation manner, the outward protruding edge of the wheel plate is the trigger part 62, the frame 11 is further provided with a tact switch 78 arranged right opposite to the side edge of the wheel plate 6, and the trigger part 62 of the wheel plate 6 triggers the tact switch 78 to act in the circumferential rotation process.

Compared with the electric operating mechanism of the existing circuit breaker, the structure of the electric operating mechanism is optimized and improved, so that the electric operating mechanism is simpler in structure, more stable and reliable in performance, lower in cost, convenient to use, capable of avoiding misoperation, more miniaturized due to reasonable design of the internal structure, and provided with an efficient transmission ratio gear set, the sliding push plate is safer when manual control and electric control are switched due to the arrangement of the sliding push plate, and misoperation is effectively avoided; the utility model discloses a structural design science, it improves on preventing maloperation and stable performance, like the slip push pedal, the relevant design of gear train and slider, the whole security performance of product has been promoted, secondly, carry out space utilization optimal design through the subassembly that will integrate, make its whole electric operating mechanism's whole height reduce, the advantage of product miniaturization has been promoted, this product of the same driving motor of rational design through the gear train simultaneously is stronger to the drive power of closing a floodgate, the structure of this product design is more superior for its performance of the smaller type of prior art volume, good market perspective has.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a circuit breaker electric operating mechanism, includes casing (1), frame (11) and drive assembly, its characterized in that, casing (1) inside is equipped with a plurality of mounting panel (5) that are used for drive assembly to be "nearly" style of calligraphy and vertical motor (2) that set up in casing (1), mounting panel (5) including first mounting panel (51) and second connecting plate (52), motor (2) are located the below of first mounting panel (51), and its motor main shaft (23) run through first mounting panel (51) and have gear engagement to connect and be provided with gear train (3), drive gear (4) are connected in the output meshing of gear train (3), drive gear (4) axial fixity set up on second connecting plate (52), and its one end that runs through frame (11) sets up wheel board (6) that have guide block (61), the wheel plate (6) and the driving gear (4) are fixedly linked to rotate in the circumferential direction, the wheel plate further comprises a sliding block (7) which is matched with the wheel plate (6) and used for switching on and off, the sliding block (7) is provided with a limiting groove (71) and a sliding groove (72), a sliding rod (73) which is matched with the sliding groove (72) is further arranged on the rack (11), the guide block (61) is hinged to the wheel plate (6) and is positioned in the limiting groove (71) and driven by the wheel plate (6) rotating in the circumferential direction to move along the edge of the limiting groove (71), and the guide block (61) can drive the sliding block (7) to move axially along the sliding rod (73) when moving; and the other end of the driving gear (4) is provided with a manual operation shaft (9) with a switching-on and switching-off indicating assembly (8) and a sliding push plate (91) for switching control.

2. An electric operating mechanism for a circuit breaker according to claim 1, wherein: gear train (3) are including a plurality of relative frame (11) axial fixity's gear spare (31) constitution, gear spare (31) are including gear wheel (32) and pinion (33) that have the same tooth pitch and different modulus axial side by side fixed connection and set up, and gear spare (31) of adjacent meshing set up through gear wheel (32) meshing pinion (33) cooperation for increase amplitude, enlarge motor (2) during operation to drive gear (4) drive power.

3. An electric operating mechanism for a circuit breaker according to claim 2, wherein: the gear pieces (31) are arranged in a staggered mode through the size difference ratio of the large gear (32) and the small gear (33) to reduce space occupation.

4. An electric operating mechanism for a circuit breaker according to claim 1, wherein: the shell (1) is box-shaped, the rack (11) is embedded in the shell (1) and used for fixing the driving assembly, and the driving assembly is respectively positioned on the upper surface and the lower surface of the rack (11) and is tightly attached to the rack (11).

5. An electric operating mechanism for a circuit breaker according to claim 1, wherein: the switching-on and switching-off indicating assembly (8) comprises an indicating disc (81) which is circumferentially fixed with the driving gear (4) and has two indicating colors and an indicating port (82) which is arranged on the shell (1) and is eccentrically arranged relative to the indicating disc (81) and used for observing the indicating disc (81).

6. An electric operating mechanism for a circuit breaker according to claim 1, wherein: still including slip push pedal (91), slip push pedal (91) and casing (1) sliding connection's terminal surface is provided with arch (92), casing (1) on be provided with protruding (92) matching slide rail groove (93), slip push pedal (91) be used for sliding to switch manual and electric control.

7. An electric operating mechanism for a circuit breaker according to claim 1, wherein: the guide block (61) on the wheel plate (6) is a bearing with an inner hole hinged on the wheel plate (6), the wheel plate (6) is arranged in a cam rotating mode, and the edge protruding outwards is a triggering portion (62).

8. An electric operating mechanism for a circuit breaker according to claim 7 wherein: the frame (11) is also provided with a light touch switch (78) which is arranged right opposite to the side edge of the wheel plate (6), and the triggering part (62) of the wheel plate (6) triggers the light touch switch (78) to act in the circumferential rotation process.