CN111916304A

CN111916304A - Circuit breaker operating mechanism

Info

Publication number: CN111916304A
Application number: CN202010879576.5A
Authority: CN
Inventors: 麦建国; 陈崇立; 陈仙; 周汉光
Original assignee: Hm Power Guangzhou Co ltd
Current assignee: Hm Power Guangzhou Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-11-10
Anticipated expiration: 2040-08-27
Also published as: CN111916304B

Abstract

The invention provides a circuit breaker operating mechanism, which comprises a main shaft component, a cam component, an energy storage driving component, a gate component, a reset component, a closing locking component, an opening locking component and a limiting component, wherein the cam component is arranged on the main shaft component; the main shaft component comprises a main shaft and a transmission wheel; the cam member includes a multi-lobe cam, a first stop element and a second stop element; the energy storage component is used for storing elastic potential energy during energy storage; the energy storage driving part is provided with an energy storage crank arm and a driving clutch pawl; the gate component comprises an operating shaft, an output driving piece and a connecting rod component; the reset component is used for storing elastic potential energy during closing; the closing locking component is used for locking and unlocking the position of the energy storage driving part during energy storage; the switching-off locking component is used for locking and unlocking the position of the output driving piece when switching on; the stop member includes a first stop member cooperating with the first limit feature and a second stop member cooperating with the second limit feature. The circuit breaker operating mechanism occupies less space.

Description

Circuit breaker operating mechanism

Technical Field

The invention relates to the field of vacuum circuit breaker devices, in particular to a circuit breaker operating mechanism.

Background

The high-voltage vacuum circuit breaker is a device applied to a high-voltage power supply and distribution system and used for protecting and controlling power equipment when overload and short circuit occur. The main components of the high-voltage vacuum circuit breaker comprise a circuit breaker main body and an operating mechanism, the currently commonly used operating mechanism comprises an electromagnetic operating mechanism, a hydraulic operating mechanism, a spring operating mechanism and the like, wherein the commonly used spring operating mechanism comprises a shell, an energy storage component and a brake separating mechanism, for example, Chinese patent CN201310007437.3, the shell comprises a left side plate and a right side plate, the energy storage component and the brake mechanism are arranged between the left side plate and the right side plate from left to right, one end of an energy storage crank arm of the energy storage component is connected with an energy storage spring of the energy storage component, the other end of the energy storage crank arm is linked with the brake mechanism, and the energy storage crank arm is vertically reciprocated to switch the energy storage spring of the energy storage component between an energy storage state and an energy release state so as to enable the brake mechanism to be in a switch-on or brake separating state The spare part dismouting is difficult, the operational reliability is relatively poor, and energy storage connecting lever links with energy storage component, gate mechanism simultaneously, has increased the possibility that the energy storage component produced the operation trouble, makes operating mechanism's life shorten, has also increased operating costs such as maintenance and maintenance.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a circuit breaker operating mechanism which occupies a small space and has long service life.

In order to achieve the purpose, the invention adopts the following technical scheme:

the circuit breaker operating mechanism comprises a main shaft component, a cam component, an energy storage driving component, a gate component, a reset component, a closing locking component, an opening locking component and a limiting component; the main shaft component comprises a main shaft and a transmission wheel fixedly connected to the main shaft, and a transmission limiting part is arranged at the edge of the transmission wheel; the cam component is rotatably assembled on the main shaft and comprises a multi-lobe cam, a first limiting element and a second limiting element which are fixed relatively and arranged on two sides of the multi-lobe cam, and a first limiting part and a second limiting part are respectively arranged on the first limiting element and the second limiting element at intervals corresponding to the number of lobes of the multi-lobe cam; the energy storage component comprises an elastic energy storage element, the driving end of which is pressed to store elastic potential energy; the energy storage driving part can be rotatably assembled between the second limiting element and the driving wheel relative to the main shaft, an energy storage connecting lever extending outwards is arranged on the energy storage driving part, the end part of the energy storage connecting lever is hinged with the driving end of the energy storage component, and a driving clutch pawl which is coupled with the transmission limiting part in an energy storage rotation angle to enable the energy storage driving part to be driven by the driving wheel is arranged on the energy storage driving part; the gate component comprises an operating shaft arranged at a distance from the main shaft, an output driving part fixedly connected to the operating shaft and a connecting rod part, one end of the connecting rod part is hinged with the output driving part, the other end of the connecting rod part can swing around a fixed hinge axis, and a driving hinge part on the connecting rod part is movably coupled with the multi-lobe cam;

the reset component comprises an elastic reset element of which the driving end is pressed to store elastic potential energy, and the driving end of the reset component is hinged with the output driving piece relative to one side of the output driving piece connected with the connecting rod part;

the closing locking component is used for locking and unlocking the position of the energy storage component driven by the energy storage driving component when energy storage is completed;

the brake separating locking component is used for locking and unlocking the position of the output driving piece driving the reset component when the energy storage is completed;

the limiting member comprises a first limiting member matched with the first limiting part for limiting the opening position of the cam member and a second limiting member matched with the second limiting part for limiting the closing position of the cam member; when the switch is switched on, the energy storage driving part is unlocked through the switch-on locking component, the energy storage component drives the energy storage driving part to reset and swing, the multi-blade cam is driven to rotate to a high position to push the driving hinge part to swing upwards, so that the connecting rod component is driven to push the output driving part to rotate the operating shaft, meanwhile, the resetting component stores energy, and the switch-off locking component locks the output driving part; when the brake is opened, the output driving part is unlocked through the brake opening locking component, the reset component drives the output driving part to reset and swing so as to enable the operating shaft to rotate, and meanwhile, the connecting rod component is driven to enable the driving hinge part to press the multi-blade cam so as to enable the multi-blade cam to be rotationally coupled to the low position.

Compared with the prior art, the circuit breaker operating mechanism has the following beneficial effects:

(1) the main shaft component, the energy storage component, the gate component, the reset component, the closing locking component and the opening locking component are arranged in a staggered mode, so that the layout of parts is more reasonable, and the disassembly and assembly difficulty of the parts is reduced, the design of the invention is flatter, and an independent installation thin hanging type module is formed, so that the installation space (small volume and thin thickness) occupied by the invention is reduced, and the invention is convenient for production personnel to apply the invention to high-voltage vacuum circuit breakers of different specifications, and is convenient for popularization and use;

(2) the invention is provided with an energy storage driving part linked with an energy storage component and a multi-blade cam linked with a gate mechanism, when the gate is closed, the energy storage driving part drives the multi-blade cam to rotate, so that the multi-blade cam rotates by an angle of one blade in a single direction in each energy storage-closing-opening process to control the working state of the gate mechanism, each wheel of the multi-blade cam only rotates within a set range of angles, and the multi-wheel working process also only performs one-way circular rotation, thereby reducing the external force applied to the energy storage driving part in the working process and the external force applied to the multi-blade cam in the working process, reducing the possibility of failure of a main shaft component and a cam component, having higher transmission efficiency, prolonging the service life of the invention, and reducing the operation cost of maintenance and the like;

(3) the invention uses the first limit component to lock the first limit component relative to the rotation direction of the cam component when opening the brake and uses the second limit component to lock the second limit component along the rotation direction of the cam component when closing the brake by arranging the limit component to match the first limit component and the second limit component on the cam component, thereby preventing the gate mechanism from swinging downwards to enable the multi-blade cam to rotate towards the pushing direction relative to the ejector to influence the next round of work when opening/closing the brake and protecting the rotating mechanism.

Preferably, the closing locking member comprises a closing pawl, a closing switch and a closing resetting member, the closing pawl locks the position of the energy storage driving member when the energy storage driving member drives the energy storage member to complete energy storage, the closing switch is used for controlling the closing pawl to enable the closing pawl to release the locking of the energy storage driving member, and the closing resetting member is used for enabling the closing pawl to be kept resetting to one side of the locking energy storage driving member.

Above-mentioned mode of setting up, when making the energy storage driving piece carry out the energy storage to the energy storage component, the energy storage driving piece with the sincere son contact of combined floodgate, and remove to the sincere son head end below of combined floodgate, the combined floodgate piece that resets makes the sincere son restriction energy storage driving piece of combined floodgate upwards resumes, realizes the locking after the energy storage component energy storage of energy storage driving piece completion, simple structure, convenient to operate and use.

Preferably, the separating brake locking member comprises separating brake sincere parts, a separating brake switch and a separating brake resetting part, the position of the separating brake sincere parts when the energy storage is completed to the output driving member driving resetting member is locked, the separating brake switch is used for controlling the separating brake sincere parts, the separating brake sincere parts are enabled to release the locking of the output driving member, and the separating brake resetting part is used for enabling the separating brake sincere parts to be kept to reset to one side of the locking output driving member.

Preferably, the transmission limiting part comprises a ratchet groove arranged on the outer side of the transmission wheel and used in the energy storage process, the clutch driving pawl can be connected to the energy storage driving part in a swinging mode around a swinging axis and is kept to reset towards one side of the ratchet groove by an elastic resetting part, and therefore the transmission wheel and the energy storage driving part can realize one-way transmission.

The transmission wheel is simple in structure, so that the transmission limiting part is easily connected with the clutch of the clutch driving pawl, the energy storage driving part can only rotate in one direction, and damage to parts caused by rotation of the energy storage driving part in the other direction due to operation errors is avoided.

Preferably, the clutch mechanism further comprises a limiting piece, and the limiting piece acts on the clutch driving pawl to separate from the ratchet groove when the energy storage driving piece rotates to the energy storage member to complete energy storage.

Through setting up the locating part, the effect makes it break away from the ratchet groove on the sincere son of drive separation and reunion when the energy storage driving piece is rotatory to the energy storage component is accomplished the energy storage, thereby realize the separation of the sincere son of drive separation and reunion and drive wheel, realize putting in place the back at energy storage driving piece in energy storage rotation angle internal rotation, because the sincere son of drive separation and reunion and drive wheel separation, it makes the drive wheel rotate to operate the main shaft component again, the energy storage driving piece can not continue the rotation again, thereby can't continue the energy storage to the energy storage component, thereby avoid exerting too much pressure and surpassing elastic deformation's scope.

Preferably, the restricting direction of the first restricting element is opposite to the rotational direction of the multi-lobe cam, and the restricting directions of the first restricting portion and the second restricting portion are arranged to be opposite to each other.

The first limiting element and the second limiting element are arranged in the above mode, when the switch is switched on, the rotating range of the multi-blade cam is limited by the second limiting element, and when the switch is switched off, the rotating range of the multi-blade cam is limited by the first limiting element.

Preferably, the energy storage component further comprises a holding block, the holding block is arranged on the periphery of the driving end of the elastic energy storage element, the holding block is provided with a positioning opening for the energy storage crank arm to pass through, and the holding block is used for limiting the driving end of the elastic energy storage element after the energy storage component releases elastic potential energy.

By arranging the retaining block, the energy storage member is limited after releasing elastic potential energy, so that the interference of the energy storage member on other parts is avoided, the normal use of the energy storage device is influenced, and the parts are prevented from being damaged due to collision and scraping.

Preferably, the operating shaft with be equipped with the stroke control component between the output driving piece, the stroke control component includes stroke restriction spare and two regulating parts, the stroke restriction spare includes overstroke turning arm and first sleeve, the operating shaft with first sleeve is connected, the output driving piece with first sleeve swing joint, overstroke turning arm sets up at first sleeve lateral part, two the regulating part runs through overstroke turning arm both ends respectively to support the output driving piece respectively, through adjusting two the length that the regulating part inserted the overstroke turning arm to the contained angle between adjustment output driving piece and the overstroke turning arm.

Through setting up the stroke control component, through adjusting two the regulating part inserts the length of overstroke turning arm, can be nimble convenient swing stroke of adjusting output driving piece, and reliability and security are strong.

Preferably, the connecting rod part comprises a first rod piece and a second rod piece, one end of the first rod piece is hinged to the second rod piece, the other end of the first rod piece can swing around a fixed hinge axis, the other end of the second rod piece is hinged to the output driving piece, and the hinged position of the first rod piece and the second rod piece is the driving hinge portion.

The connecting rod has the advantages of small number of parts, simple structure, low cost, convenience in assembly and maintenance, high transmission efficiency and capability of improving the response speed of the invention.

Preferably, a buffer is arranged below the side, connected with the connecting rod part, of the output driving part; when the brake is switched off, the output driving piece and the connecting rod part are connected, and one side of the output driving piece swings downwards and abuts against the buffer piece.

The buffer piece is arranged at the lower swing end of the output driving piece during brake opening, so that impact force generated when the output driving piece and the connecting rod part are connected at one side and swing downwards can be buffered, and the situation that the second limiting component and the second limiting element are damaged and cannot be normally used due to the fact that the output driving piece applies large impact force to the multi-lobe cam through the connecting rod part during brake opening is avoided.

Drawings

FIG. 1 is a side view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a top perspective view of an assembly schematic of the spindle member, cam member and energy storage member;

FIG. 4 is a bottom view schematic of the assembly of the spindle member, cam member and energy storage member;

FIG. 5 is a schematic diagram of the present invention in a stored energy state;

FIG. 6 is a schematic diagram of the present invention in a closed position;

FIG. 7 is a schematic diagram of the present invention before opening;

FIG. 8 is a rear view of the present invention in the open position;

figure 9 is an exploded view of the spindle member, cam member and stored energy driver.

Description of reference numerals:

1 housing, 11 front plate, 12 rear plate, 13 mounting cavity, 14 stop, 15 driving motor, 16 rotating handle, 17 spindle component, 2 spindle, 20 multi-lobe cam, 200 cam shaft, 201 blade, 202 guide inclined plane, 21 driving wheel, 210 ratchet groove, 22 energy storage driving component, 23 energy storage crank arm, 24 first extending arm, 241 bulge, 242 pushing component, 25 connecting component, 26 shaft sleeve, 27 driving clutch pawl, 28 first limiting element, 280 first limiting part, 29 second limiting element, 290 second limiting part, 3 first limiting component, 31 clearance groove, 4 second limiting component, 41 second extending arm, 42 clamping component, 5 energy storage component, 51 first telescopic component, 52 elastic energy storage component, 6 closing locking component, 61 closing pawl, 62 switch, 63 first, 7 retaining block, 71 elastic part, 72 positioning port, 8 operating shaft, 80 output driving component, 800 third extending arm, the device comprises a 801 linkage, an 802 stroke control component, an 81 over-stroke crank, an 82 adjusting component, an 83 first rod, an 84 second rod, a 840 driving hinge part, an 85 resetting component, an 86 second telescopic component, an 87 elastic resetting component, an 88 buffering component, a 9 opening locking component, a 91 opening pawl, a 92 opening switch and a 93 second buckle.

Detailed Description

Embodiments of the present invention are described below with reference to the accompanying drawings:

referring to fig. 1 to 8, the circuit breaker operating mechanism of the present embodiment includes a housing 1, an energy supplying mechanism, a main shaft member 17, a cam member, an energy storage member 5, an energy storage driving member 22, a shutter member, a reset member 85, a closing locking member 6, an opening locking member 9, and a limiting member; the main shaft component 17 comprises a main shaft 2 and a transmission wheel 21 fixedly connected to the main shaft 2, and a transmission limiting part is arranged at the edge of the transmission wheel 21; the cam component is rotatably assembled on the main shaft 2, the cam component comprises a multi-lobe cam 20, a first limit element 28 and a second limit element 29 which are fixed relatively and are arranged at two sides of the multi-lobe cam 20, the first limit element 28 and the second limit element 29 are fixedly connected through a cam shaft 200, and a first limit part 280 and a second limit part 290 are respectively arranged at intervals on the first limit element 28 and the second limit element 29 corresponding to the number of lobes 201 of the multi-lobe cam 20; at least three blades 201 are arranged on the multi-blade cam 20 at equal intervals; the energy storage driving part 22 can be rotatably assembled between the second limiting element 29 and the transmission wheel 21 relative to the main shaft 2, an energy storage connecting lever 23 extending outwards is arranged on the energy storage driving part 22, the end part of the energy storage connecting lever 23 is hinged with the driving end of the energy storage member 5, and a driving clutch pawl 27 which is coupled with the transmission limiting part in an energy storage rotation angle to enable the energy storage driving part 22 to be driven by the transmission wheel 21 is arranged on the energy storage driving part 22; the energy storage member 5 comprises an elastic energy storage element 52 and a first telescopic piece 51, wherein the driving end of the elastic energy storage element 52 is pressed to store elastic potential energy, one end of the first telescopic piece 51 is connected with the shell 1, the other end of the first telescopic piece 51 is hinged with the energy storage crank arm 23, and the elastic energy storage element 52 is sleeved outside the first telescopic piece 51; the gate member includes an operation shaft 8 spaced apart from the main shaft 2, an output driving member 80 fixedly connected to the operation shaft 8, and a link member having one end hinged to the output driving member 80 and the other end swingable about a fixed hinge axis, a driving hinge 840 on the link member being movably coupled to the lobed cam 20; the reset member 85 comprises an elastic reset element 87 and a second telescopic piece 86, wherein the driving end of the elastic reset element 87 is pressed to store elastic potential energy, one end of the second telescopic piece 86 is connected with the shell 1, the elastic reset element 87 is sleeved outside the second telescopic piece 86, and the driving end of the reset member 85 is hinged with the output driving piece 80 relative to one side of the output driving piece connected with the connecting rod part (the other end of the second telescopic piece 86 is hinged with the output driving piece 80); the closing locking component 6 is used for locking and unlocking the position of the energy storage component 5 driven by the energy storage driving component 22 when energy storage is completed; the opening locking component 9 is used for locking and unlocking the position of the output driving component 80 when the reset component 85 is driven to complete energy storage; the limiting member comprises a first limiting member 3 matched with the first limiting part for limiting the opening position of the cam member and a second limiting member 4 matched with the second limiting part for limiting the closing position of the cam member; when the switch is switched on, the energy storage driving part 22 is unlocked through the switch-on locking component 6, the energy storage component 5 drives the energy storage driving part 22 to reset and swing, the multi-lobe cam 20 is driven to rotate to a high position to push the driving hinge part 840 to swing upwards, so that the connecting rod component is driven to push the output driving part 80 to rotate the operating shaft 8, meanwhile, the resetting component 85 is enabled to store energy, and the switch-off locking component 9 locks the output driving part 80; when the brake is opened, the output driving member 80 is unlocked by the brake opening locking member 9, the reset member 85 drives the output driving member 80 to reset and swing to rotate the operating shaft 8, and simultaneously, the connecting rod component is driven to drive the hinge portion 840 to press the multi-lobe cam 20 to make the multi-lobe cam rotationally coupled to the low position.

Referring to fig. 1, the housing 1 includes a front plate 11 and a rear plate 12, a mounting cavity 13 is formed between the front plate 11 and the rear plate 12, and the energy supply mechanism, the spindle member 17, the cam member, the energy storage member 5, the energy storage driving member 22, the shutter member, the reset member 85, the closing locking member 6, the opening locking member 9 and the limiting member are disposed in the mounting cavity 13.

Referring to fig. 2, the energy supplying mechanism is used for driving the rotating mechanism to rotate so as to enable the energy storing member 5 to store energy, and the energy supplying mechanism comprises a driving motor 15, a chain (not shown), a first chain wheel (not shown) and a second chain wheel (not shown), the first chain wheel is arranged at the output end of the driving motor 15, the second chain wheel is connected with the outer side of the main shaft 2, and the chain is arranged between the first chain wheel and the second chain wheel.

Alternatively, referring to fig. 1, the rotating mechanism is driven to rotate manually (by rotating the rotating handle 16, the rotating handle 16 is detachably disposed at the outer end of the main shaft 2) to store energy in the energy storage member 5.

Referring to fig. 2 to 9, the stored energy driving member 22 is provided with an ejecting member 242, the ejecting member 242 is connected to the stored energy driving member 22 in a swinging manner around a swinging axis and is kept pointing to the rotating direction of the multi-lobe cam 20 by a torsion spring (not shown), and the ejecting member 242 can unidirectionally push the multi-lobe cam 20 to rotate when the switch is closed.

Referring to fig. 9, a shaft sleeve 26 is provided between the stored energy driving member 22 and the main shaft 2, so that the stored energy driving member 22 can rotate independently relative to the main shaft 2; the multi-lobe cam 20 is spaced apart from the main shaft 2 so that the multi-lobe cam 20 can rotate independently of the main shaft 2.

Referring to fig. 5 to 7, the closing locking member 6 includes a closing latch 61, a closing switch 62 and a closing resetting member (not shown in the drawings), the closing latch 61 locks the position of the energy storage member 5 driven by the energy storage driving member 22 when energy storage is completed, the closing switch 62 is configured to operate the closing latch 61, so that the closing latch 61 releases the locking of the energy storage driving member 22, and the closing resetting member is configured to keep the closing latch 61 reset to the side of the energy storage driving member 22.

Referring to fig. 5 to 7, a torsion spring (not shown in the figures) is disposed on an outer side of the closing switch 62, and is used for resetting the closing switch 62, and a first positioning groove (not shown in the figures) is disposed on the closing switch 62; a first buckling plate 63 is arranged between the closing switch 62 and the closing pawl 61, the middle part of the first buckling plate 63 is bent, the middle part of the first buckling plate 63 can swing around a swing axis and is connected to the installation cavity 13, the upper part of the first buckling plate 63 keeps the downward resetting trend by a torsion spring (not shown in the figure), the lower part of the first buckling plate 63 is clamped into the first positioning groove, and the closing pawl 61 is arranged on the upper part of the first buckling plate 63; a third extending arm 800 is arranged at the lower part of the output driving member 80, a roller (not shown in the figure) is arranged on the third extending arm 800, and the brake-separating latch 91 limits the swing range of the output driving member 80 by locking the third extending arm 800; after the energy storage component 5 stores energy, the first buckle plate 63 swings by operating the closing switch 62, the closing pawl 61 releases the locking of the energy storage driving part 22, the energy storage driving part 22 resets to push the multi-lobe cam 20 to rotate, the output driving part 80 is lifted, the operating shaft 8 is rotated, and the energy storage device is in a closing state.

Above-mentioned mode of setting up, when making energy storage driving piece 22 store energy to energy storage component 5, energy storage driving piece 22 with the sincere son 61 contact of closing a floodgate, and move to the sincere son 61 head end below of closing a floodgate, the piece that resets of closing a floodgate makes sincere son 61 restriction energy storage driving piece 22 upwards resumes, realizes the locking after energy storage component 5 energy storage of energy storage driving piece 22 completion, simple structure, convenient to operate and use.

Referring to fig. 3 to 8, a first extending arm 24 is further disposed outside the energy storage driving member 22, a protrusion 241 is disposed on the first extending arm 24, and in this embodiment, the protrusion 241 is a roller; the head end of the closing latch 61 can swing up and down, referring to fig. 5, after the energy storage driving member 22 rotates in place within the energy storage rotation angle, the protrusion 241 is located below the head end of the closing latch 61, and the closing latch 61 locks the protrusion 241.

Referring to fig. 5 to 8, the opening locking member 9 includes an opening latch 91, an opening switch 92 and an opening reset member (not shown in the drawings), the opening latch 91 locks the position of the output driving member 80 when the reset member 85 is driven to complete energy storage, the opening switch 92 is used for operating the opening latch 91 to unlock the output driving member 80 by the opening latch 91, and the opening reset member is used for keeping the opening latch 91 reset to the side of the locked output driving member 80.

Referring to fig. 5 to 8, a torsion spring (not shown) is disposed outside the opening switch 92, and is used for resetting the opening switch 92, and a second positioning slot (not shown) is disposed on the opening switch 92; a second buckle plate 93 is arranged between the opening switch 92 and the opening pawl 91, the middle of the second buckle plate 93 is bent, the middle of the second buckle plate 93 can swing around a swing axis and is connected to the installation cavity 13, the upper part of the second buckle plate 93 keeps a downward resetting trend by a torsion spring (not shown in the figure), the lower part of the second buckle plate 93 is clamped into the second positioning groove, and the opening pawl 91 is arranged on the upper part of the second buckle plate 93; when the breaker triggers the opening switch 92, the second buckle plate 93 swings, the opening pawl 91 releases the locking of the output driving member 80, and the output driving member 80 resets the rotary operating shaft 8, so that the invention is in an opening state.

Referring to fig. 9, the transmission limiting portion includes a ratchet groove 210 disposed outside the transmission wheel 21 and acting during the energy storage process, and the driving clutch 27 is connected to the energy storage driving member 22 in a swinging manner around a swinging axis and is kept to be reset to one side of the ratchet groove 210 by an elastic resetting member (not shown), so that the transmission wheel 21 and the energy storage driving member 22 realize one-way transmission.

The transmission wheel 21 has a simple structure, so that the transmission limiting part is easily connected with the clutch of the driving clutch pawl 27, the energy storage driving part 22 can only rotate in one direction, and the damage to parts caused by the rotation of the energy storage driving part 22 in the other direction due to operation errors is avoided.

Referring to fig. 5, a limiting member 14 is further included, and the limiting member 14 acts on the driving clutch catch 27 to disengage from the ratchet groove 210 when the energy storage driving member 22 rotates to the energy storage member 5 finishes storing energy.

Through setting up the locating part 14, when the energy storage driving part 22 rotates to the energy storage component 5 and finishes the energy storage, the action makes it break away from the ratchet groove 210 on the sincere 27 of drive clutch, thereby realize the separation of sincere 27 of drive clutch and drive wheel 21, realize after the energy storage driving part 22 is in place in the rotation of energy storage rotation angle, because sincere 27 of drive clutch and drive wheel 21 separate, the main shaft component 17 of the re-operation makes the drive wheel 21 rotate, the energy storage driving part 22 can not continue to rotate again, thereby can't continue the energy storage to the energy storage component 5, thereby avoid exerting too much pressure and surpassing the range of elastic deformation to the energy storage component 5, play the guard action to the energy storage.

Referring to fig. 8 and 9, the restricting direction of the first restricting element 28 is opposite to the rotation direction of the multi-lobe cam 20, and the restricting directions of the first and second restricting

portions

280 and 290 are arranged to be opposite.

The first limiting element 28 and the second limiting element 29 are arranged in the above mode, the rotating range of the multi-lobe cam 20 is limited by the second limiting element 29 when the switch is switched on, and the rotating range of the multi-lobe cam 20 is limited by the first limiting element 28 when the switch is switched off, so that the structure is simple, and the reliability is high.

Referring to fig. 3, 8 and 9, the first position-limiting member 3 is pivotally connected to the mounting chamber 13 about a pivot axis and is held by a clutch return (not shown) to be directed in the rotational direction of the lobed cam 20, so that the first position-limiting member 3 is engaged with the first position-limiting member to limit the lobed cam 20 from rotating to the side of the lobed cam 20 that applies force to the lobed cam 20 relative to the stored energy driver 22 when the switch is turned on; the first limiting member 3 is provided with a clearance groove 31 corresponding to the ejector 242; the second position-limiting member 4 is connected to the mounting chamber 13 so as to be pivotable about a pivot axis and is held by a position-limiting return member (not shown) to be directed in a direction of rotation relative to the lobed cam 20, so that the second position-limiting member 4 is engaged with the second position-limiting portion to limit the rotation of the lobed cam 20 to a side of the stored energy driver 22 which applies a force to the lobed cam 20 when the switch is closed.

Referring to fig. 4 and 7, the energy storage connecting lever 23 is connected with the first telescopic member 51 through a connecting member 25, and the connecting member 25 extends towards one side of the second limiting member 4; a second extending arm 41 is arranged on the second limiting member 4, the second extending arm 41 is arranged at the swinging position of the energy storage connecting lever 23 when the energy storage connecting lever 23 stores energy for the energy storage member 5, and the second extending arm 41 is provided with a clamping piece 42 corresponding to the connecting piece 25; when energy is stored, the energy storage crank arm 23 pushes the second limiting component 4 to swing upwards, so that the second limiting component 4 is separated from the second limiting element 29.

Referring to fig. 3 to 8, the energy storage member 5 further includes a holding block 7, the holding block 7 is disposed on the periphery of the driving end of the elastic energy storage element 52, the holding block 7 is provided with a positioning opening 72 for the energy storage connecting lever 23 to pass through, and the holding block 7 is used for limiting the driving end of the elastic energy storage element 52 after the energy storage member 5 releases the elastic potential energy; specifically, the holding block 7 is provided with an elastic part 71 made of an elastic material, and the positioning hole 72 is formed in the elastic part 71, so that the holding block 7 can provide buffering for the energy storage member 5 when being switched on while playing a limiting role, and impact on the rotating mechanism when the energy storage member 5 releases energy is avoided.

By arranging the retaining block 7, after the energy storage member 5 releases elastic potential energy, the energy storage member 5 is limited, so that the energy storage member 5 is prevented from interfering other parts to influence the normal use of the invention, and the parts are prevented from being damaged due to collision and scraping.

Referring to fig. 5 to 7, a stroke control member 802 is disposed between the operating shaft 8 and the output driving member 80, the stroke control member 802 includes a stroke limiting member and two adjusting members 82, the stroke limiting member includes an over-stroke crank 81 and a first sleeve (not shown), the operating shaft 8 is connected to the first sleeve, the output driving member 80 is movably connected to the first sleeve, the over-stroke crank 81 is disposed on a side portion of the first sleeve, the two adjusting members 82 respectively penetrate through two ends of the over-stroke crank 81 and respectively abut against the output driving member 80, and an included angle between the output driving member 80 and the over-stroke crank 81 is adjusted by adjusting a length of the two adjusting members 82 inserted into the over-stroke crank 81. The output driving member 80 includes a linkage member 801 and a second sleeve (not shown), the second sleeve is rotatably sleeved on the outer side of the first sleeve, the linkage member 801 is disposed on the side portion of the second sleeve and located below the over-travel crank arm 81, and the lower ends of the two adjusting members 82 respectively abut against the linkage member 801.

Through setting up stroke control component 802, through adjusting two the length that regulating part 82 inserted overstroke turning arm 81, can be nimble convenient swing stroke of adjusting output driving piece 80, reliability and security are strong.

Referring to fig. 5 to 8, the link member includes a first link 83 and a second link 84 with one end hinged, the other end of the first link 83 is swingable around a fixed hinge axis, the other end of the second link 84 is hinged to the output driving member 80, and the hinged position of the first link 83 and the second link 84 is the driving hinge 840.

Referring to fig. 6, the back side of the vane 201 of the lobed cam 20 is provided with a guide slope 202 inclined downward, and the driving hinge 840 of the link member moves downward and is positioned at a recess between the two vanes 201 of the lobed cam 20 along the guide slope 202 during opening.

Referring to fig. 5 to 8, a buffer 88 is disposed below the side of the output driving member 80 connected to the link member; when the brake is opened, the side of the output driving member 80 connected with the link member swings downward and abuts against the buffer member 88.

The buffer piece 88 is arranged at the lower swinging end of the output driving piece 80 during brake opening, so that the impact force generated when the side, connected with the connecting rod part, of the output driving piece 80 swings downwards can be buffered, and the second limiting member 4 and the second limiting element 29 are damaged and cannot be normally used due to the fact that the output driving piece 80 applies large impact force to the multi-lobe cam 20 through the connecting rod part during brake opening is avoided.

The working process of the invention is as follows:

(1) an energy storage stage: the main shaft 2 is driven to rotate in the energy storage rotation angle through the energy supply mechanism or the rotating handle 16, the main shaft 2 rotates to drive the transmission wheel 21 to be coupled with the clutch driving part 27, and the energy storage driving part 22 compresses the energy storage component 5 after rotating in place in the energy storage rotation angle, so that the energy storage component 5 stores energy; after the energy storage driving part 22 rotates to the right position in the energy storage rotating angle, the limiting part 14 pushes and drives the clutch pawl 27 to drive the clutch pawl 27 to separate from the transmission wheel 21; the closing pawl 61 pushes the first arm 24 to lock the energy storage driving member 22; the connecting piece 25 on the energy storage driving piece 22 pushes the clamping piece 42 of the second stretching arm 41, so that the second limiting component 4 swings upwards and is separated from the second limiting element 29; the driving hinge portion 840 of the link member is located at a concave position between the two vanes 201 of the multi-vane cam 20, and the output driver 80 drives the operation shaft 8 to rotate.

(2) And (3) closing: rotating a closing switch 62 to unlock the energy storage driving member 22 by the closing latch 61, releasing the energy storage member 5 to push the energy storage driving member 22 to rotate and reset, and pushing the ejector 242 to engage with the first limiting element 28 and push the multi-lobe cam 20 fixedly connected with the first limiting element 28 to rotate by an angle of one lobe 201; the second limit member 4 is separated from the connecting piece 25 on the energy storage driving piece 22 and swings downwards to be meshed with a second limit element 29, and the multi-lobe cam 20 fixedly connected with the second limit element 29 is braked and stopped; the link component swings upwards under the push of the multi-lobe cam 20 (and is out of contact with the multi-lobe cam 20 because of inertia), so that the output driving component 80 drives the operating shaft 8 to rotate, and meanwhile, the output driving component 80 compresses the resetting component 85, so that the resetting component 85 is charged with energy; the brake-separating latch 91 pushes the third spreading arm 800 to lock the output driving member 80; the driving end of the energy storage member 5 abuts against the holding block 7 after reset.

(3) A brake separating stage: the vacuum circuit breaker triggers the opening switch 92 to release the locking of the opening latch 91 to the output driving member 80, the reset member 85 can push the output driving member 80 to reset, the output driving member 80 rotates the operating shaft 8, the connecting rod part swings downwards and pushes against one side of the blades 201 of the multi-lobe cam 20 relative to the rotating direction, and the connecting rod part enters a concave position between the two blades 201 of the multi-lobe cam 20; one side of the lower hem of the output driving piece 80 is abutted against a buffer piece 88; and finishing a round of energy storage, closing and opening actions.

(1) the main shaft component 17, the energy storage component 5, the gate component, the reset component 85, the closing locking component 6 and the opening locking component 9 are arranged in a staggered mode, so that the layout of parts is more reasonable, the dismounting difficulty of the parts is reduced, the design of the invention is flatter, an independent mounting thin hanging type module is formed, the mounting space (small volume and thin thickness) occupied by the invention is reduced, and the invention is convenient for production personnel to apply the invention to high-voltage vacuum circuit breakers of different specifications and is convenient for popularization and use;

(2) the invention is provided with an energy storage driving piece 22 linked with an energy storage component 5 and a multi-lobe cam 20 linked with a gate mechanism, when the gate is closed, the energy storage driving piece 22 drives the multi-lobe cam 20 to rotate, so that the multi-lobe cam 20 rotates by an angle of a convex tooth in a single direction in each energy storage-closing-opening process to control the working state of the gate mechanism, each wheel of the multi-lobe cam 20 only rotates within a set range angle interval, and the multi-wheel working process only performs one-way circular rotation, thereby realizing the reduction of the external force applied to the energy storage driving piece 22 in the working process and the external force applied to the multi-lobe cam 20 in the working process, reducing the possibility of the failure of a main shaft component 17 and a cam component, having higher transmission efficiency, prolonging the service life of the invention, and reducing the operation cost of maintenance and the like;

(3) the invention uses the first limit component 3 to lock the first limit component 28 relative to the rotation direction of the cam component when opening the brake and uses the second limit component 4 to lock the second limit component 29 along the rotation direction of the cam component when closing the brake by arranging the limit component to match the first limit component 28 and the second limit component 29 on the cam component, thereby preventing the multi-blade cam 20 from rotating towards the pushing direction of the ejector to influence the next round of operation when the gate mechanism swings downwards when opening/closing the brake, and protecting the rotating mechanism.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The circuit breaker operating mechanism, its characterized in that includes:

the main shaft component comprises a main shaft and a driving wheel fixedly connected to the main shaft, and a driving limiting part is arranged at the edge of the driving wheel;

the cam component is rotatably assembled on the main shaft and comprises a multi-lobe cam, a first limiting element and a second limiting element which are fixed relatively and arranged on two sides of the multi-lobe cam, and a first limiting part and a second limiting part are respectively arranged on the first limiting element and the second limiting element at intervals corresponding to the number of lobes of the multi-lobe cam;

the energy storage component comprises an elastic energy storage element, the driving end of which is pressed to store elastic potential energy;

the energy storage driving part can be assembled between the second limiting element and the driving wheel in a rotating mode relative to the main shaft, an energy storage connecting lever extending outwards is arranged on the energy storage driving part, the end part of the energy storage connecting lever is hinged with the driving end of the energy storage component, and a driving clutch pawl which is coupled with the transmission limiting part in an energy storage rotating angle to enable the energy storage driving part to be driven by the driving wheel is arranged on the energy storage driving part;

a gate component, which comprises an operation shaft arranged at a distance from the main shaft, an output driving part fixedly connected to the operation shaft and a connecting rod part, wherein one end of the connecting rod part is hinged with the output driving part, the other end of the connecting rod part can swing around a fixed hinge axis, and a driving hinge part on the connecting rod part is movably coupled with the multi-lobe cam;

the brake separating and locking component is used for locking and unlocking the position of the output driving piece driving the reset component when the energy storage is finished;

the limiting component comprises a first limiting component matched with the first limiting part for limiting the opening position of the cam component and a second limiting component matched with the second limiting part for limiting the closing position of the cam component;

when the switch is switched on, the energy storage driving part is unlocked through the switch-on locking component, the energy storage component drives the energy storage driving part to reset and swing, the multi-blade cam is driven to rotate to a high position to push the driving hinge part to swing upwards, so that the connecting rod component is driven to push the output driving part to rotate the operating shaft, the resetting component stores energy at the same time, and the switch-off locking component locks the output driving part;

when the brake is opened, the output driving part is unlocked through the brake opening locking component, the reset component drives the output driving part to reset and swing so as to enable the operating shaft to rotate, and meanwhile, the connecting rod component is driven to enable the driving hinge part to press the multi-blade cam so as to enable the multi-blade cam to be rotationally coupled to the low position.

2. The circuit breaker operating mechanism according to claim 1, wherein the closing locking member includes a closing pawl, a closing switch, and a closing resetting member, the closing pawl locks a position of the energy storage driving member when the energy storage driving member drives the energy storage member to complete energy storage, the closing switch is configured to control the closing pawl so that the closing pawl releases the locking of the energy storage driving member, and the closing resetting member is configured to maintain the closing pawl to reset to one side of the energy storage driving member.

3. The circuit breaker operating mechanism according to claim 1, wherein the opening locking member includes an opening latch, an opening switch and an opening reset member, the opening latch locks a position of the output driving member when the output driving member drives the reset member to complete energy storage, the opening switch is used for operating the opening latch to unlock the output driving member, and the opening reset member is used for keeping the opening latch reset to one side of the locked output driving member.

4. The circuit breaker operating mechanism as claimed in claim 1, wherein the transmission limiting portion includes a ratchet groove disposed outside the transmission wheel and acting during the energy storage process, and the driving clutch is swingably connected to the energy storage driving member about a swing axis and is kept to be reset to one side of the ratchet groove by an elastic reset member, so that the transmission wheel and the energy storage driving member realize one-way transmission.

5. The circuit breaker operating mechanism of claim 4, further comprising a limiting member, wherein the limiting member acts on the driving clutch pawl to disengage the ratchet groove when the energy storage driving member rotates to the point that the energy storage member completes energy storage.

6. The circuit breaker operating mechanism of claim 1, wherein the first position-limiting element has a position-limiting direction opposite to a rotational direction of the multi-lobe cam, and the first position-limiting portion and the second position-limiting portion have position-limiting directions opposite to each other.

7. The circuit breaker operating mechanism of claim 1, wherein the energy storage member further comprises a retaining block, the retaining block is disposed on the periphery of the driving end of the elastic energy storage element, the retaining block is provided with a positioning opening for the energy storage crank arm to pass through, and the retaining block is used for limiting the driving end of the elastic energy storage element after the energy storage member releases the elastic potential energy.

8. The circuit breaker operating mechanism according to claim 1, wherein a stroke control member is disposed between the operating shaft and the output driving member, the stroke control member includes a stroke limiting member and two adjusting members, the stroke limiting member includes an over-stroke crank arm and a first sleeve, the operating shaft is connected to the first sleeve, the output driving member is movably connected to the first sleeve, the over-stroke crank arm is disposed on a side portion of the first sleeve, the two adjusting members respectively penetrate through two ends of the over-stroke crank arm and respectively abut against the output driving member, and an included angle between the output driving member and the over-stroke crank arm is adjusted by adjusting a length of the two adjusting members inserted into the over-stroke crank arm.

9. The circuit breaker operating mechanism of claim 1 wherein the linkage assembly includes a first link and a second link, one end of the first link being pivotally connected to the second link, the other end of the first link being pivotally connected to a fixed pivot axis, the other end of the second link being pivotally connected to the output drive member, the pivotal connection between the first link and the second link being the drive hinge.

10. The circuit breaker actuator of claim 1 wherein a buffer is disposed below the side of the output driver coupled to the linkage assembly;

when the brake is switched off, the output driving piece and the connecting rod part are connected, and one side of the output driving piece swings downwards and abuts against the buffer piece.