CN111192798B - Circuit breaker operating mechanism - Google Patents

Circuit breaker operating mechanism Download PDF

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Publication number
CN111192798B
CN111192798B CN201911328610.3A CN201911328610A CN111192798B CN 111192798 B CN111192798 B CN 111192798B CN 201911328610 A CN201911328610 A CN 201911328610A CN 111192798 B CN111192798 B CN 111192798B
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CN
China
Prior art keywords
energy storage
manual
rotating shaft
transmission
shaft
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Active
Application number
CN201911328610.3A
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Chinese (zh)
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CN111192798A (en
Inventor
蒋晓孟
孔志武
李云龙
陈金钟
王慧慧
王帅军
李文科
朱星汉
张伟东
黄晓洋
王东旭
乔桂萍
高翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
Original Assignee
State Grid Corp of China SGCC
Pinggao Group Co Ltd
Henan Pinggao Electric Co Ltd
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Application filed by State Grid Corp of China SGCC, Pinggao Group Co Ltd, Henan Pinggao Electric Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201911328610.3A priority Critical patent/CN111192798B/en
Publication of CN111192798A publication Critical patent/CN111192798A/en
Application granted granted Critical
Publication of CN111192798B publication Critical patent/CN111192798B/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/66Power reset mechanisms
    • H01H71/70Power reset mechanisms actuated by electric motor

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

The invention relates to a circuit breaker operating mechanism, which comprises a frame; the energy storage system is arranged on the rack and comprises an energy storage shaft which is rotatably arranged on the rack; the electric energy storage system comprises a motor, and the motor is in transmission connection with the energy storage shaft through an electric transmission mechanism; the circuit breaker operating mechanism also comprises a manual energy storage system, the manual energy storage system comprises a manual rotating shaft and a transmission rotating shaft, the manual rotating shaft is rotatably installed on the rack and provided with a screwing section for manual screwing, and the transmission rotating shaft is integrated with the energy storage shaft or in transmission connection with the energy storage shaft; the manual rotating shaft and the transmission rotating shaft are in transmission connection through a gear set; one of the rotating shafts of the manual energy storage system is rotatably assembled with the rack through a first one-way bearing, and one gear of the gear set is arranged on the corresponding rotating shaft through a second one-way bearing; the first one-way bearing is upstream of the second one-way bearing on a drive path from the manual spindle to the drive spindle. The circuit breaker operating mechanism has high safety factor and is convenient for manual energy storage.

Description

Circuit breaker operating mechanism
Technical Field
The invention relates to a circuit breaker operating mechanism.
Background
The energy storage system of the circuit breaker operating mechanism mostly adopts electric energy storage, but in order to realize the energy storage of the circuit breaker with the working capacity of the circuit breaker by remediating when the electric energy storage breaks down, the existing circuit breaker operating mechanism is mostly provided with a manual energy storage device.
The manual energy storage device of the existing circuit breaker operating mechanism mostly realizes the manual energy storage operation of the circuit breaker operating mechanism in a mode that a manual rotating shaft is directly connected with an energy storage shaft. However, in the manual energy storage process of the operating mechanism adopting the connection mode, once the condition of abnormal starting of the electric energy storage occurs, the energy storage shaft can rotate rapidly under the action of the motor, so that the manual rotating shaft is directly driven to rotate rapidly, and serious injury accidents are caused to manual energy storage operators. Even if at normal manual energy storage in-process, because of the effect of circuit breaker operating mechanism energy storage system energy storage spring, the energy storage axle can receive great effort in the direction of rotation, and at the in-process of manual energy storage like this, manual pivot and energy storage axle lug connection's mode arouses very easily that manual pivot is gyration in certain angle, causes manual energy storage operation difficulty.
Disclosure of Invention
The invention aims to provide a circuit breaker operating mechanism, which aims to solve the technical problems that in the prior art, when the circuit breaker operating mechanism is operated manually, a manual rotating shaft is driven by abnormal starting of a motor to rotate quickly, so that an operator is easily injured, or the manual rotating shaft is easily driven by an energy storage shaft to rotate reversely, so that manual energy storage is difficult.
The circuit breaker operating mechanism adopts the following technical scheme:
a circuit breaker operating mechanism comprises a frame; the energy storage system is arranged on the rack and comprises an energy storage shaft which is rotatably arranged on the rack; the electric energy storage system comprises a motor, and the motor is in transmission connection with the energy storage shaft through an electric transmission mechanism; the circuit breaker operating mechanism also comprises a manual energy storage system, the manual energy storage system comprises a manual rotating shaft and a transmission rotating shaft, the manual rotating shaft is rotatably installed on the rack and provided with a screwing section for manual screwing, and the transmission rotating shaft is integrated with the energy storage shaft or in transmission connection with the energy storage shaft; the manual rotating shaft and the transmission rotating shaft are in transmission connection through a gear set; one of the rotating shafts of the manual energy storage system is rotatably assembled with the rack through a first one-way bearing, and one gear of the gear set is arranged on the corresponding rotating shaft through a second one-way bearing; the first one-way bearing is upstream of the second one-way bearing on a drive path from the manual spindle to the drive spindle.
The beneficial effects are that: during manual energy storage, the manual rotating shaft rotates relative to the rack and drives the energy storage shaft to rotate through the gear set and the transmission rotating shaft, and manual energy storage is achieved. If the motor starts in this process, the motor passes through motor drive mechanism and drives the energy storage axle and rotate fast, this moment, because a gear of gear train passes through the second one-way gear and installs in corresponding pivot, this gear can drive through the one-way bearing of second when manual energy storage so correspond the pivot and rotate, and when the energy storage axle was driven the fast rotation by the motor, this corresponding pivot can not drive the gear fast rotation that corresponds through the one-way bearing of second, cut off the motor and drive manual pivot pivoted route, can not lead to manual pivot rotational speed to increase, avoid injury operating personnel. Similarly, in the manual energy storage process, if the energy storage shaft is driven by the energy storage spring to turn reversely, because a rotating shaft of the manual energy storage system is assembled on the frame through the first one-way bearing, the rotating shaft can not rotate in the opposite direction during the manual energy storage operation, and the manual rotating shaft can not be turned reversely, so that the safety coefficient of the circuit breaker operating mechanism is high, and the manual energy storage is convenient.
Further, the gear set is a speed reduction gear set which reduces speed and increases torque on a transmission path from the manual rotating shaft to the transmission rotating shaft.
The beneficial effects are that: the reduction gear set enables an operator to drive the manual rotating shaft to rotate with small force, and the labor intensity of the operator is reduced.
Further, the rack comprises two mounting plates which are arranged in parallel at intervals, and the gear set is arranged between the two mounting plates.
The beneficial effects are that: the two mounting plates can protect the gear set, the gear set is prevented from being interfered by other components of the energy storage device, and the circuit breaker operating mechanism can operate reliably.
Further, the parts of the screwing sections and the transmission rotating shaft, which are connected with the energy storage shaft, are positioned on the two opposite sides of the frame.
The beneficial effects are that: will revolve and twist section and energy storage axle branch and put in the both sides of frame for energy memory's overall arrangement is more reasonable, guarantees to revolve to twist to have spacious operating space around the section, makes things convenient for operating personnel to carry out manual energy storage operation to energy memory.
Furthermore, the gear set is provided with a pair of gears, one gear is installed on the manual rotating shaft, the other gear is installed on the transmission rotating shaft through the second one-way bearing, and the manual rotating shaft is installed on the rack through the first one-way bearing.
The beneficial effects are that: the structure of the gear set is simpler, the energy storage device is miniaturized, and meanwhile, the edge of the energy storage device is manufactured.
Furthermore, the circuit breaker operating mechanism also comprises a microswitch for controlling the on-off of a motor power supply circuit, and the microswitch is arranged at a position close to the screwing section and is triggered when the manual energy storage crank is matched with the screwing section plug bush.
The beneficial effects are that: on the basis that the motor can not drive the manual rotating shaft to rotate rapidly, the power supply circuit of the motor is disconnected by the microswitch during manual energy storage operation, the motor can not be started by mistake, double insurance is realized, the manual rotating shaft can not be driven by the motor to rotate rapidly during manual energy storage operation, and the safety factor of the energy storage device is improved.
Furthermore, an inserting sleeve is fixed on the rack, an annular space is formed between the screwing section and the inner wall of the inserting sleeve in the inserting sleeve, an avoiding channel penetrating through the wall thickness of the inserting sleeve is formed in the inserting sleeve, a triggering part of the microswitch extends into the inserting sleeve through the avoiding channel, a manual energy storage crank is inserted into the inserting sleeve and is triggered, or a transmission part is arranged in the avoiding channel and is matched with the triggering part of the microswitch, and when the manual energy storage crank is inserted into the inserting sleeve, the manual energy storage crank drives the microswitch to act to trigger the microswitch.
The beneficial effects are that: the plug bush protects the trigger component of micro-gap switch or the transmission component matched with the trigger component of micro-gap switch, and the micro-gap switch can be triggered only by inserting the manual energy storage crank into the plug bush, so that the problem that the motor is stopped due to the fact that the micro-gap switch is triggered by mistake when the manual energy storage operation is not performed is avoided.
Furthermore, the transmission part is rotatably installed on the rack, when the manual energy storage crank is not inserted, one end of the transmission part extends into the insertion sleeve through the avoiding channel, and when the manual energy storage crank is inserted into the insertion sleeve, the transmission part can be driven to rotate, so that one end of the transmission part, which is back to the insertion sleeve, triggers the micro switch.
The beneficial effects are that: the transmission component can be conveniently arranged in the avoiding channel by adopting a rotating installation mode.
Furthermore, the surface of the transmission part matched with the manual energy storage crank is an arc-shaped surface.
The beneficial effects are that: the transmission part is matched with the manual energy storage crank through the arc-shaped surface, so that the manual energy storage crank can push the transmission part to rotate conveniently.
Drawings
Fig. 1 is a schematic partial structural view of a circuit breaker operating mechanism in accordance with an embodiment 1 of the present invention;
fig. 2 is a partial schematic structural diagram of the circuit breaker operating mechanism in accordance with embodiment 1 of the present invention from another view point;
fig. 3 is a schematic structural diagram of a manual energy storage system and an electric energy storage system of the circuit breaker operating mechanism in embodiment 1 of the invention;
fig. 4 is a schematic structural diagram of the cooperation between the manual energy storage system and the microswitch in embodiment 1 of the circuit breaker operating mechanism of the invention;
in the figure: 1-a frame; 2-a transmission sleeve; 3-a first mounting plate; 4-a second mounting plate; 5-manual rotating shaft; 6-a first one-way bearing; 7-a first gear; 8-a second gear; 9-a second one-way bearing; 10-a transmission rotating shaft; 11-a motor; 12-a first bevel gear; 13-a second bevel gear; 14-a microswitch; 15-inserting a sleeve; 16-an avoidance channel; 17-a stop block; 18-a motor mount; 19-a return spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The specific embodiment 1 of the circuit breaker operating mechanism of the present invention: as shown in fig. 1 and 2, the energy storage device includes a frame 1 and an energy storage shaft. The frame 1 comprises two mounting plates which are arranged in parallel at intervals, namely a first mounting plate 3 and a second mounting plate 4, and an energy storage shaft is rotatably mounted on the frame 1 (not shown in the figure). One end of the energy storage shaft is in transmission connection with an energy storage spring of the circuit breaker operating mechanism and drives the energy storage spring to store energy through the rotation of the energy storage shaft. How the energy storage shaft is in transmission connection with the energy storage spring belongs to the prior art, and details are not described herein.
In order to drive the energy storage shaft to rotate, a manual energy storage system and an electric energy storage system are further mounted on the machine frame 1.
Regarding the structure of the manual energy storage system, as shown in fig. 4, the manual energy storage system includes a manual rotation shaft 5 and a transmission rotation shaft 10. Manual rotating shaft 5 is respectively through two bearings and first mounting panel 3 and 4 normal running fit of second mounting panel and rotation mounting in frame 1, wherein, is first one-way bearing 6 with first mounting panel 3 complex bearing, and first one-way bearing 6 makes manual rotating shaft 5 only can rotate for frame 1 when manual energy storage operation, and unable antiport. In other embodiments, the part of the frame for mounting the manual energy storage system may also be a single plate, or may also be a frame-type structure formed by welding and fixing section bars, and a corresponding bearing seat is fixed on the frame for facilitating the mounting of the bearing.
The transmission rotating shaft 10 is rotatably mounted on the frame 1 through two bearings in a rotating fit with the first mounting plate 3 and the second mounting plate 4 respectively, and is in transmission connection with an energy storage shaft of the circuit breaker operating mechanism through the transmission sleeve 2. In other embodiments, the transmission rotating shaft can be integrally formed with the energy storage shaft.
The manual energy storage system further comprises a gear set for transmission between the manual rotating shaft 5 and the transmission rotating shaft 10, in this embodiment, the gear set is a pair of meshed gears, namely a first gear 7 and a second gear 8, wherein the first gear 7 is mounted on the manual rotating shaft 5 in a rotation stopping manner, and the second gear 8 is mounted on the transmission rotating shaft 10 through a second one-way bearing 9. During manual energy storage operation, the second gear 8 drives the transmission rotating shaft 10 to rotate through the second one-way bearing 9, and then drives the energy storage shaft to rotate.
In actual operation, need to go up manual energy storage crank of commentaries on classics suit on manual pivot 5, operating personnel drives manual pivot 5 through shaking manual energy storage crank and rotates, in this embodiment, as shown in fig. 4, manual pivot 5 and the direction overhang of manual energy storage crank complex one end towards the second mounting panel 4 of keeping away from, and the one end of being connected with the energy storage shaft transmission of transmission pivot 10 is in the one side of frame 1 of keeping away from to first mounting panel 3, so can have comparatively spacious confession manual energy storage crank pivoted space around the manual pivot 5 for circuit breaker operating mechanism is convenient for the manual operation energy storage. Certainly, in other embodiments, can also make the one end that manual rotation and manual energy storage crank complex one end and transmission pivot and energy storage shaft transmission are connected be located one side of mounting panel, for convenient operating personnel wave manual energy storage crank, relatively long that sets up the axial dimension of manual pivot for manual rotation and manual energy storage crank complex one end hang to extend to the position that the operating personnel waved manual energy storage crank.
Meanwhile, in order to ensure that an operator can drive the manual energy storage system with a small force to perform the manual energy storage operation, in the embodiment, the diameter of the first gear 7 is smaller than that of the second gear 8, so that the gear set is a speed reduction gear set which reduces and increases the torque on a transmission path from the manual rotating shaft 5 to the transmission rotating shaft 10. In other embodiments, for a small circuit breaker actuator, the energy storage spring is relatively easy to compress, and in order to increase the speed of the manual energy storage operation, the diameter of the first gear may be larger than that of the second gear, so that the gear set is a speed-increasing gear set on the transmission path from the manual rotating shaft to the transmission rotating shaft.
The structure of the electric energy storage system is shown in fig. 3, and comprises a motor 11, which is mounted on the second mounting plate 4 through a motor mounting frame 18, the axis of the rotating shaft of the motor 11 is mounted on the rack 1 axially and vertically to the energy storage shaft 2, and the motor 11 drives the energy storage shaft 2 to rotate through a bevel gear set consisting of a first bevel gear 12 and a second bevel gear 13. The bevel gear set is used as an electric transmission mechanism to realize transmission connection between the motor and the energy storage shaft.
During manual operation energy storage, only change the suit with manual energy storage crank on manual rotating shaft 5, drive manual rotating shaft 5 rotates along clockwise, first gear 7 rotates along instantaneous needle direction along with manual rotating shaft 5, and the drive rotates along anticlockwise rather than meshing complex second gear 8, when second gear 8 rotates along anticlockwise, only change the cooperation between the inner and outer lane of second one-way bearing 9, second gear 8 can drive transmission through second one-way bearing 9 and take out 10 anticlockwise rotations, and then drive energy storage shaft 2 anticlockwise rotations, anticlockwise energy storage shaft 2 passes through drive mechanism drive energy storage spring and warp the energy storage.
In this process, the effort of energy storage spring bounce-back can drive energy storage shaft 2 and produce clockwise rotation's trend, and make transmission pivot 10 also produce clockwise rotation's trend, at this moment, transmission pivot 10 can be through second one-way bearing 9, second gear 8 and first gear 7 drive manual pivot 5 produce anticlockwise rotation's trend, at this moment, relative rotation can not take place for the inner circle and the outer lane of first one-way bearing 6, thereby avoid manual pivot 5 to take place the reversal because of energy storage spring's reaction force, the operating personnel of being convenient for operates manual energy storage system and carries out manual energy storage.
If motor 11 gets electric start suddenly among the manual energy storage operation process, motor 11 can drive energy storage shaft 2 through electric drive mechanism with faster quick anticlockwise rotation, and then drive transmission pivot 10 is with faster quick anticlockwise rotation, transmission pivot 10 drives the inner circle anticlockwise rotation of the one-way bearing 9 of second, the unable drive outer lane of the one-way bearing 9 anticlockwise rotation of the inner circle of second rotates, therefore, second gear 8 can not be driven by transmission pivot 10 and accelerate the rotation, and then guarantee that manual pivot 5 can not be accelerated by the gear train drive and rotate, guarantee operating personnel's personal safety.
In addition, in order to ensure that the motor 11 cannot be powered during the manual energy storage operation, the circuit breaker operating mechanism further comprises a microswitch 14 fixed on the rack 1, and the microswitch 14 is used for controlling the on-off of a circuit for supplying power to the motor 11. The microswitch 14 is arranged at a screwing section close to the manual rotating shaft 5, and when the manual energy storage crank is sleeved on the manual rotating shaft 5, the manual energy storage crank can trigger the microswitch 14 to disconnect a circuit for supplying power to the motor 11.
Specifically, an inserting sleeve 15 is fixed on the machine frame 1, the inserting sleeve 15 is sleeved outside the manual rotating shaft 5, the screwing section is located in the inserting sleeve 15, and an annular space for inserting the manual energy storage crank is formed between the inserting sleeve 15 and the manual rotating shaft 5. Offer the passageway 16 of dodging that runs through its wall thickness on the plug bush 15, the last rotation of frame 1 installs transmission part, transmission part specifically is dog 17 in this embodiment, even has reset spring 19 on the dog, when manual energy storage crank did not insert in plug bush 15, under reset spring 19's pulling, the one end of dog 17 extends in plug bush 15 through dodging passageway 16, when cartridge manual energy storage crank on to manual pivot 5, manual energy storage crank promotes dog 17 and rotates, make dog 17 trigger micro-gap switch 14 to the one end of plug bush 15 dorsad, the circuit disconnection that will supply power to motor 11. After the manual energy storage crank is pulled out, the stop block 17 is reset, the trigger on the microswitch 14 is released, and a circuit for supplying power to the motor 11 is communicated. In order to ensure that the stop block 17 is easily pushed to rotate by the manual energy storage crank, the surface of the stop block 17 matched with the manual energy storage crank is an arc surface. In other embodiments, the stop block can also move along the radial direction of the plug bush and is arranged in the avoiding channel, the inclined surface of the stop block facing the manual energy storage crank is a wedge-shaped surface, and when the manual energy storage crank is inserted into the plug bush, the stop block is pushed to move out of the plug bush and trigger the micro switch. When the manual energy storage crank is pulled out, the stop block resets under the action of the reset spring.
In other embodiments, the transmission component can also be a blocking rod, one end of the blocking rod is used for extending into the plug bush through the avoiding channel, and the other end of the blocking rod is used for triggering the micro switch. Of course, the trigger end of the microswitch can also be directly extended into the sleeve through the avoiding channel, and when the manual energy storage crank is inserted, the manual energy storage crank directly pushes the trigger end to trigger the microswitch. The arrangement of the plug bush can ensure that the microswitch is not easily triggered by mistake, and in other embodiments, the plug bush can be omitted in view of simplifying the structure of the circuit breaker operating mechanism.
The embodiment 2 of the circuit breaker operating mechanism is different from the embodiment 1 in that in the embodiment, the manual energy storage system comprises a manual rotating shaft and a transmission rotating shaft, and also comprises a middle rotating shaft arranged on a transmission path of the manual rotating shaft and the transmission rotating shaft, the manual rotating shaft is rotatably arranged on the rack and can rotate clockwise and anticlockwise relative to the rack, the first gear is rotatably stopped and arranged on the manual rotating shaft, and the manual rotating shaft is rotated anticlockwise during manual energy storage operation. The middle rotating shaft is rotatably installed on the rack through a first one-way bearing, so that the middle rotating shaft can only rotate clockwise and one-way relative to the rack during manual energy storage operation, a third gear is assembled on the middle rotating shaft in a rotation stopping mode, and the third gear is meshed with the first gear and a second gear on the transmission rotating shaft simultaneously.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims (7)

1. A circuit breaker actuator comprising:
a frame;
the energy storage system is configured on the frame and comprises:
the energy storage shaft is rotatably arranged on the rack;
the electric energy storage system comprises a motor, and the motor is in transmission connection with the energy storage shaft through an electric transmission mechanism;
it is characterized in that the preparation method is characterized in that,
the circuit breaker operating mechanism also comprises a manual energy storage system, the manual energy storage system comprises a manual rotating shaft and a transmission rotating shaft, the manual rotating shaft is rotatably installed on the rack and provided with a screwing section for manual screwing, and the transmission rotating shaft is integrated with the energy storage shaft or in transmission connection with the energy storage shaft;
the manual rotating shaft and the transmission rotating shaft are in transmission connection through a gear set;
one of the rotating shafts of the manual energy storage system is rotatably assembled with the rack through a first one-way bearing, and one gear of the gear set is arranged on the corresponding rotating shaft through a second one-way bearing;
on a transmission path from the manual rotating shaft to the transmission rotating shaft, the first one-way bearing is located at the upstream of the second one-way bearing;
the circuit breaker operating mechanism further comprises a microswitch for controlling the on-off of a motor power supply circuit, the microswitch is arranged at a position close to the screwing section and is triggered when the manual energy storage crank is matched with the screwing section plug bush;
the frame is fixed with an insert sleeve, the screwing section is positioned in the insert sleeve and an annular space is arranged between the screwing section and the inner wall of the insert sleeve, an avoiding channel penetrating through the wall thickness of the insert sleeve is arranged on the insert sleeve, a triggering part of the microswitch extends into the insert sleeve through the avoiding channel, a manual energy storage crank is inserted into the insert sleeve and is triggered, or a transmission part is arranged in the avoiding channel and is matched with the triggering part of the microswitch, and when the manual energy storage crank is inserted into the insert sleeve, the manual energy storage crank drives the microswitch to act and trigger the microswitch.
2. The circuit breaker actuator of claim 1 wherein the gear train is a reduction gear train that reduces and increases torque in a drive path from the manual shaft to the drive shaft.
3. The circuit breaker actuator of claim 1 or 2 wherein the frame includes two spaced parallel mounting plates with the gear train therebetween.
4. The circuit breaker actuator of claim 1 or 2 wherein the screw segments and the portion of the drive shaft that is connected to the energy storage shaft are on opposite sides of the frame.
5. The circuit breaker operating mechanism of claim 1 or 2 wherein the gear train has a pair of gears, one of the gears being mounted on the manual shaft, the other gear being mounted on the drive shaft through the second one-way bearing, the manual shaft being mounted on the frame through the first one-way bearing.
6. The circuit breaker operating mechanism according to claim 1 or 2, wherein the transmission member is rotatably mounted on the frame, and when the manual energy storage handle is not inserted, one end of the transmission member extends into the insertion sleeve through the avoiding passage, and when the manual energy storage handle is inserted into the insertion sleeve, the transmission member is driven to rotate, so that one end of the transmission member, which faces away from the insertion sleeve, triggers the microswitch.
7. The circuit breaker operating mechanism of claim 1 or 2 wherein the surface of the transmission member that engages the manual energy storage handle is arcuate.
CN201911328610.3A 2019-12-20 2019-12-20 Circuit breaker operating mechanism Active CN111192798B (en)

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Application Number Priority Date Filing Date Title
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