WO2015197035A2 - 弹簧操动机构 - Google Patents

弹簧操动机构 Download PDF

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Publication number
WO2015197035A2
WO2015197035A2 PCT/CN2015/088041 CN2015088041W WO2015197035A2 WO 2015197035 A2 WO2015197035 A2 WO 2015197035A2 CN 2015088041 W CN2015088041 W CN 2015088041W WO 2015197035 A2 WO2015197035 A2 WO 2015197035A2
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WO
WIPO (PCT)
Prior art keywords
spring
shaft
arm
transmission
piston
Prior art date
Application number
PCT/CN2015/088041
Other languages
English (en)
French (fr)
Other versions
WO2015197035A3 (zh
Inventor
钟建英
刘宇
宋超
宋广民
朱苛娄
闫广超
邹高鹏
王振
付亚旭
陈金钟
王守山
王亚辉
许家源
苏计东
郭良超
Original Assignee
国家电网公司
河南平高电气股份有限公司
平高集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 国家电网公司, 河南平高电气股份有限公司, 平高集团有限公司 filed Critical 国家电网公司
Publication of WO2015197035A2 publication Critical patent/WO2015197035A2/zh
Publication of WO2015197035A3 publication Critical patent/WO2015197035A3/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/32Driving mechanisms, i.e. for transmitting driving force to the contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/60Mechanical arrangements for preventing or damping vibration or shock

Definitions

  • the invention relates to a spring operating mechanism for a circuit breaker.
  • the operating mechanism is an important equipment in the field of high-voltage transmission and transformation, and is an important part of the high-voltage circuit breaker.
  • the opening and closing operation of the high-voltage circuit breaker is realized by the operating mechanism.
  • the operating mechanism of the high-voltage circuit breaker is mainly divided into two types: the hydraulic operating mechanism and the spring operating mechanism.
  • the hydraulic operating mechanism has the advantages of short separation and closing time and stable performance, but also has complicated structure, high cost and easy leakage. Oil, vulnerable to the use of the environment and other shortcomings.
  • the spring operating mechanism does not have the problem of oil leakage, and has the characteristics of low cost, simple structure, stable and reliable performance, long service life, etc., and is widely used in circuit breakers of various voltage levels.
  • the spring operating mechanism has been gradually A trend to replace hydraulic operating mechanisms.
  • a spring operating mechanism such as the "high-power spring operating mechanism for high-voltage and ultra-high-voltage circuit breakers" disclosed in Chinese Patent No. CN202126942U, the spring operating mechanism includes a frame, and the frame includes left and right spacing The left and right mounting plates, the upper and lower ends of the left and right mounting plates are respectively fixedly connected by upper and lower connecting screws, and the left and right mounting plates are provided with energy storage devices, and the energy storage device includes a motor and an energy storage shaft for storing energy.
  • An energy storage tweezers connected by a closing spring chain and a corresponding closing spring is arranged on the shaft, and an energy storage shaft cam and an energy storage shaft sprocket are fixed on the energy storage shaft, and a closing roller is arranged on the energy storage shaft sprocket.
  • a closing trip device is provided beside the energy storage shaft, and the energy storage shaft sprocket is connected to the power output end of the motor through a transmission mechanism, and the transmission mechanism includes a first shaft parallel to the energy storage shaft and a second shaft, the second shaft is drivingly connected to the power output end of the motor through the chain, the first shaft gear and the first shaft sprocket are fixed on the first shaft, and the first shaft sprocket is driven by the chain and the energy storage shaft sprocket Connection, solid on the second shaft A second shaft gear meshing with the first drive shaft gear.
  • the power of the motor is transmitted to the second shaft, and the power is transmitted to the first shaft through the meshing transmission of the first and second shaft gears, and then the power is transmitted through the transmission of the first shaft sprocket and the energy storage shaft sprocket. Go to the energy storage shaft.
  • the spring operating mechanism further includes an output shaft disposed in parallel with the energy storage shaft, the output shaft is equipped with a buffer arm and an output arm, and the output arm is provided with a shutter for supporting the energy storage shaft cam
  • the roller and the connecting member connected to the corresponding opening spring through the opening spring chain, the opening energy storage roller and the connecting member are all mounted on the output arm through the pin shaft, and the buffer arm passes the piston rod of the pin shaft and the buffer
  • the output arm is also connected with an output rod connected to the corresponding moving contact.
  • a trip release device for mating with the output arm limit is provided beside the output arm.
  • the opening spring is disposed in the opening spring cylinder
  • the closing spring is disposed in the closing spring cylinder
  • the opening spring cylinder and the closing spring cylinder are arranged up and down
  • the opening spring cylinder and the closing spring cylinder are disposed on the left and right sides.
  • the front side of the closing spring and the opening spring are respectively provided with a reversing sprocket
  • the closing spring and the opening spring respectively comprise a spring assembly
  • the spring assembly comprises a front and a rear spring seat and a top portion disposed between the front and rear spring seats.
  • Spring, the center of the spring is provided with a transmission rod, and the spring chain is opened.
  • the closing spring chain is connected with the transmission rod of the closing spring through the reversing of the reversing sprocket, and the front end of the transmission rod is guided in order to ensure the stability of the movement of the transmission rod.
  • the movement is disposed on the front spring seat, and the rear end of the transmission rod is guided and moved through the rear spring seat.
  • the transmission rod is mounted on the rear side of the rear spring seat with an adjusting nut for preventing the rear spring seat from being disengaged from the transmission rod.
  • the working process of the spring operating mechanism is: when the closing spring energy storage is required, the motor drives the energy storage shaft to rotate, and the joint on the energy storage shaft pulls the closing spring energy storage through the chain, and the closing brake is released after the energy storage ends.
  • the device cooperates with the closing roller limit on the energy storage shaft sprocket to prevent the energy storage shaft from continuing to rotate, thereby maintaining the closing spring in the energy storage state, and when the closing is required, the closing tripping device releases the limit of the roller Position, the closing spring releases energy, the energy storage shaft cam 58 on the energy storage shaft rotates with the driving output shaft, the output arm drives the opening spring energy storage, and at the same time, the moving contact and the corresponding static contact are closed by the output pull rod, During this process, the buffer acts as a damping for the output shaft.
  • the tripping trip device limits the rotation of the output shaft, thereby maintaining the opening spring in the energy storage state.
  • the trip release device releases the limit of the output shaft.
  • the output arm drives the energy storage shaft to rotate, and the output pull rod drives the corresponding dynamic and static contacts to open.
  • the buffer in the process plays on the output shaft Nepal role.
  • the existing problems of the energy storage device of the spring operating mechanism are as follows: 1. The damping effect of the buffer on the output shaft during the opening and closing process is the same, which is very inconsistent with the actual demand of the spring operating mechanism. Because in actual work, the smaller the impact of the buffer on the closing process, the better.
  • the closing force of the closing spring is expected to be completely transmitted to the moving contact instead of being absorbed by the buffer.
  • the buffer is more Absorption of the force of the opening; 2.
  • the damper has a damping effect on the output shaft at the beginning of the closing of the moving and stationary contacts, which affects the closing and opening of the moving and stationary contacts. Speed, the moving contact is easily damaged by the arc; 3.
  • the upper and lower opening springs and the closing spring increase the space occupied by the spring operating mechanism in the up and down direction, and the upper connecting screw can not guarantee the between the left and right mounting plates.
  • connection strength; 4 through the sprocket and gear to achieve power transmission between the motor and the energy storage shaft, the transmission process of the sprocket and gear is two-way, in the process of energy storage of the closing spring, the motor drives the closing spring energy storage At the same time, the closing bomb
  • the spring also applies a reverse rotation force to the rotor of the motor through the sprocket and the gear.
  • the motor needs a lot of power to complete the energy storage process of the energy storage spring. This requires the use of a high-power motor and the use of a high-power motor. The production cost of the product is increased.
  • the closing spring releases the energy
  • the rotation of the energy storage shaft is transmitted to the rotor of the motor through the chain and the gear to drive the rotor to rotate.
  • the idling of the rotor not only increases the energy consumption, but also Reduce the service life of the motor; 5.
  • an anti-over-storage mechanism is usually provided, and the function of the anti-storage mechanism is prevented after the energy storage of the closing spring is completed.
  • the motor continues to transmit power to the closing spring.
  • the motor is stopped by the electric device to stop the transmission of power to the closing spring.
  • the problem of the anti-storage mechanism is that: If the electrical device fails, the motor continues to run, and since the spring operating mechanism has been stored in place, the mechanical latching takes effect, causing the motor to stall and burn. , parts damage and other faults; 6, in order to achieve reliable steering of the transmission rod, pass The front and rear ends of the moving rod are respectively guided and moved through the front spring seat and the rear spring seat, so that the length of the transmission rod must be made long, at least greater than the axial length of the spring, and in order to avoid the transmission rod direction When the front movement is interfered with the corresponding reversing sprocket, it is necessary to ensure a sufficient distance between the reversing sprocket and the transmission rod, which increases the space occupied by the entire spring operating mechanism, which is not conducive to the spring operating mechanism. Miniaturized production.
  • the spring operating mechanism comprises a frame, the frame is provided with a buffer and an output shaft extending in the left-right direction for driving connection with the movable contact of the corresponding circuit breaker, and the output shaft is equipped with a buffer arm, buffering a pin shaft is disposed on the arm of the buffer, and a piston hole is disposed on the piston rod of the buffer, the pin shaft is disposed in the hinge hole, and the hinge hole is long in length extending in the same direction as the length of the piston rod hole.
  • the buffer comprises an inner cylinder and an outer cylinder coaxially sleeved on the outer periphery of the inner cylinder, the inner cylinder of the inner cylinder is slidably fitted with a piston, and the piston rod is disposed on the piston, between the inner and outer cylinders
  • the utility model has an annular gap, wherein the inner cylinder of the inner cylinder is provided with a radial oil hole communicating with the inner cavity of the inner cylinder and the annular gap, the piston has a sliding matching section with the piston rod guiding sliding fit, and the piston rod is provided with a limiting piston a first and a second limiting structure for reciprocating the limit on the piston rod, the spacing between the first and second limiting structures is greater than the axial length of the sliding engagement section, and the piston is provided with an axis extending through the piston in the axial direction of the piston To the oil hole, a piston cap for sealing the corresponding hole of the axial oil hole is disposed on one side of the piston rod on the piston rod.
  • the frame comprises a shutter spring cylinder, a closing spring cylinder and a left and right mounting plate connected to the lower end, and a branching spring is arranged in the opening spring cylinder, and a closing spring is arranged in the closing spring cylinder, and the closing spring cylinder and the closing spring are combined.
  • the brake spring tube is integrally formed side by side, and the opening spring tube and the closing spring tube are respectively fixedly connected with the left mounting plate and the right mounting plate through the fixing structure.
  • the spring operating mechanism further comprises a reversing sprocket respectively disposed on the front side of the closing spring and the opening spring, the closing spring and the opening spring respectively comprise a front and a rear spring seat and a transmission rod, and each of the reversing sprocket wheels respectively a transmission rod guide sleeve extending in the front-rear direction is disposed on the rear spring seat, and the transmission rod is guided to move through the inner hole of the transmission rod guide sleeve.
  • the transmission rod is located at a rear side of the front spring seat, and the front spring seat is provided with a chain perforation extending in the front-rear direction for the corresponding chain to pass through.
  • the rack is further provided with a motor and an energy storage shaft extending in the left-right direction with an axis connected to the output shaft, and the motor is connected to the energy storage shaft through a transmission mechanism, and the transmission mechanism includes a cam shaft and a crank arm disposed in parallel with the energy storage shaft.
  • the shaft and the cam shaft are drivingly connected with the power output end of the motor, and the arm shaft is connected to the energy storage shaft.
  • the one-way bearing is mounted on the arm shaft with at least two transmission arms, and the cam shaft is fixedly respectively
  • Each of the transmission armes is provided in a one-to-one correspondence for sequentially and continuously pushing the corresponding transmission arm when the arm shaft rotates to cause the transmission arm to drive the rotation of the arm shaft.
  • Each of the transmission arm arms is disposed at an axial interval of the arm shaft, and each of the transmission arm arms is located at a side of the arm shaft adjacent to the cam shaft, and each of the transmission arm arms is connected with a first return spring.
  • the spring operating mechanism further includes an anti-storage mechanism
  • the anti-storage mechanism includes a lever having a rotation axis parallel to the axis of the energy storage shaft, and a rotation axis disposed beside the transmission arm parallel to the rotation axis of the lever a rotating plate
  • the rotating plate is provided with a pushing portion for pushing the driving arm
  • the power arm of the lever is provided with a force structure for pushing the lever unit to rotate the lever, and the lever passes through the connecting rod
  • the rotating plate is connected to drive the rotating plate to rotate by the connecting rod when the lever rotates, so that the rotating plate pushes the driving arm to be disengaged from the corresponding driving cam.
  • the lever includes a cross bar extending in the left-right direction and a vertical rod fixed to a middle portion of the cross bar, the connecting rod is connected to the vertical rod, and the force receiving structure is disposed at a left end of the cross bar.
  • a second return spring is connected to the right end of the crossbar.
  • the left end of the connecting rod is hingedly connected to the rotating plate, and the right end of the connecting rod is hingedly connected to the vertical rod.
  • the hinge hole is a long hole extending along the length of the piston rod
  • the buffer arm is connected to the piston rod through a pin threaded through the hinge hole, and the two ends of the hinge hole are respectively defined as the first
  • the beneficial effects of the present invention are now described in detail by taking the movement of the axial end of the hinge pin in the buffer arm of the closing arm as an example.
  • the pin is located at the leading end of the hinge hole.
  • the buffer arm first drives the pin to move toward the end. Since the hinge hole is a long hole, the pin can first move a certain distance in the hinge hole, and the pin moves in the hinge hole.
  • the piston rod does not move, that is, the buffer does not dampen the buffer arm, does not affect the initial closing speed of the moving contact, and then the pin moves to the end of the hinge hole, the piston rod Start to drive the piston to continue moving; when the movable and static contacts are required to be opened, the buffer arm moves the pin shaft to move toward the head end in the hinge hole. Since the hinge hole is a long hole, at the beginning, the piston rod is Will move, that is to say, the buffer has no damping effect on the buffer arm, does not affect the initial opening speed of the moving contact, then the pin moves to the first end of the hinge hole, the piston rod starts to move the piston, by setting a The long hole can ensure the closing speed of the moving contact and the initial speed of the opening.
  • the structure of the buffer is very simple and the manufacturing cost is low.
  • FIG. 1 is a schematic structural view of an embodiment of a spring operating mechanism in the present invention
  • Figure 2 is a schematic structural view of the rack of Figure 1;
  • Figure 3 is a schematic view showing the structure of the opening spring and the closing spring of Figure 1;
  • Figure 4 is a schematic structural view of the buffer of Figure 1;
  • Figure 5 is a schematic structural view of the inner cylinder of Figure 4.
  • Figure 6 is a schematic structural view of the piston cover of Figure 4.
  • Figure 7 is a schematic structural view of the piston of Figure 4.
  • Figure 8 is a left side view of Figure 7;
  • Figure 9 is a schematic view of the cooperation of the piston and the piston cover during the closing process
  • Figure 10 is a schematic view of the cooperation of the piston and the piston cover during the opening process
  • Figure 11 is a schematic view showing the structure of the anti-storage mechanism of Figure 1.
  • the embodiment of the spring operating mechanism is as shown in FIGS. 1 to 11 including a frame including a shutter spring cylinder 79, a closing spring cylinder 86, and a left mounting plate 81 and a right mounting plate 80 whose lower ends are connected together by a connecting member.
  • the opening spring tube 79 and the closing spring tube 86 are integrally cast and formed side by side, the opening spring tube 79 and the closing spring tube 86 are horizontally arranged, and the left and right mounting plates are also integrally cast and formed, and the opening spring tube and the joint are combined.
  • the brake spring cylinder and the left and right mounting plates are cast aluminum parts, and the opening spring cylinder and the closing spring cylinder are respectively fixedly connected with the left mounting plate and the right mounting plate through a fixed structure, and the fixing structure is a bolt connection structure.
  • the fixing structure comprises a spring tube connecting plate integrally extending on the corresponding spring tube and extending in the left-right direction, and a mounting plate connecting plate extending in the left-right direction integrally formed on the corresponding mounting plate, the mounting plate connecting plate and the spring
  • the barrel connecting plate is provided with a first bolt perforation extending in the left-right direction, and the fixing structure further comprises a first locking bolt extending through the bolt perforation.
  • the connecting member includes a left positioning shaft 82 extending in the left-right direction of the axis fixed on the left mounting plate 81, and a right positioning shaft 83 disposed on the right mounting plate 80 coaxially with the left positioning shaft, positioning left and right.
  • the shafts are all hollow shafts, and the second locking bolts are inserted into the inner holes of the left and right positioning shafts, and the end faces of the left and right positioning shafts are contacted and positioned to ensure the installation precision of the left and right mounting plates, and left and right.
  • the positioning shaft also ensures the strength of the connection of the second locking bolt.
  • each connecting boss is integrally formed with a connecting boss 88.
  • the upper end surface of each connecting boss is a plane for contact connection with the circuit breaker surface, and a bolt perforation is provided on the plane, and the connecting convexity is provided.
  • the strength of the left and right spring cylinders can be strengthened, and the bolts mounted by the plane fit are fixed to the circuit breaker housing to ensure that the joint between the frame and the circuit breaker is in surface contact.
  • a long rib plate and a first ring rib plate are integrally formed on each spring tube, and a second ring rib plate is arranged at the stop position of the opening spring, at the opening and closing
  • the axle spring support wheel is provided with a wheel shaft hole reinforcement rib, and a rib plate with increased strength is arranged at the joint of each spring tube and the corresponding installation plate to ensure the strength requirement of the opening and closing spring tube.
  • a branching spring is arranged in the opening spring cylinder, and a closing spring is arranged in the closing spring cylinder.
  • the front side of the opening spring and the closing spring are respectively provided with a reversing sprocket for the opening spring chain and the closing spring chain to be reversed.
  • Item 39 represents the axle of the reversing sprocket
  • the opening spring 23 and the closing spring 22 both include the front spring seat 21 and the rear.
  • the spring seat and the front end are used for the transmission rod 26 connected to the corresponding chain through the second chain joint 25.
  • the rear spring seat of the closing spring is also called the closing guide disc 28, and the rear spring seat of the opening spring is also called the opening.
  • the guide plate 29, the chain refers to the opening spring chain and the closing spring chain, and two springs are arranged between the front and rear spring seats of the opening spring.
  • the rotation directions of the two springs are opposite, and the front and rear of the closing spring Three springs are arranged on the top of the spring seat, and the two adjacent springs of the three springs are opposite in direction, and the spring periphery of the opening spring and the spring periphery of the closing spring are coaxially sleeved with a spring tube 24, and the spring tube 24
  • the coaxial line of the inner hole is fixed with a spring seat guide sleeve 30, and the rear spring seat is guided and moved into the corresponding spring seat guide sleeve, and the rear spring seat is convexly provided with a positioning boss respectively corresponding to the corresponding spring positioning.
  • the rear ends of the springs of the opening springs are respectively positioned on the corresponding positioning bosses of the rear spring seats of the opening springs, and the rear ends of the springs of the closing springs are positioned and disposed on the rear springs of the closing springs.
  • a transmission rod guide sleeve 27 extending in the front-rear direction is fixed on the seat, and the transmission rod guiding movement is disposed in the inner hole of the corresponding transmission rod guide sleeve, the transmission rod is located on the rear side of the corresponding front spring seat, and the front spring seat is opened There is a perforation extending through the axis in the front-rear direction for the corresponding chain to pass through, the transmission rod is a screw, and the adjusting rod is screwed on the rear side of the transmission rod guide sleeve.
  • Item 87 in Fig. 2 denotes an output shaft hollow mounting post for output shaft mounting integrally formed with the right mounting plate;
  • Item 85 denotes an energy storage shaft hollow mounting post for the energy storage shaft mounting integrally formed with the right mounting plate.
  • the spring operating mechanism further includes an anti-storage mechanism, a buffer 65 and an output shaft 76 extending in the left-right direction and an energy storage shaft 43.
  • the energy storage shaft 43 is provided with an energy storage shaft cam 58 and a closing spring chain 37.
  • a dice unit connected to the closing spring the dice unit including an energy storage dice 34 mounted on the energy storage shaft 42 and a first chain joint 35 mounted on the energy storage dice 34, the item 41 representing the first chain
  • the rotating shaft mounted by the joint 35 wherein the assembly relationship of the first chain joint with the energy storage tweezers and the assembly relationship between the energy storage tweezers and the energy storage shaft are all prior art, and will not be described in detail herein.
  • An energy storage shaft sprocket 27 is further disposed on the energy storage shaft, and a closing trip device 63 is disposed beside the energy storage shaft, and the closing trip device includes a closing energy storage lock shaft 62 and a closing energy storage lock shaft.
  • the closing rotary baffle and the driving mechanism for driving the closing rotating baffle to rotate, under normal circumstances, the closing rotating baffle is spring-retained to block the closing of the energy storage lock shaft, so when the energy storage tweezers 34 rotates to When the energy storage lock shaft position is closed, the energy storage tweezers are blocked by the closing energy storage lock shaft and cannot continue to rotate.
  • the closing spring is kept in the energy storage state, and when the closing trip device is required to release the limit on the energy storage tweezers
  • the driving mechanism drives the closing and rotating baffle to rotate, so that the closing and rotating baffle allows the opening and closing of the energy storage lock shaft.
  • the energy storage tweezers pushes the opening and closing of the energy storage lock shaft.
  • the spring operating mechanism also includes a motor 47 that is drivingly coupled to the energy storage shaft sprocket 57 via a transmission mechanism.
  • the transmission mechanism includes a cam shaft 48 and a crank shaft 52 disposed in parallel with the energy storage shaft.
  • the cam shaft 48 is drivingly connected to the power output end of the motor.
  • the arm shaft 52 is connected to the energy storage shaft 42 through a sprocket and a chain mechanism.
  • the wheel and chain mechanism includes an energy storage shaft sprocket 27 fixed on the energy storage shaft, a crank shaft sprocket 54 fixed on the arm shaft, and a sprocket chain 55 connected between the two sprocket wheels.
  • Two transmission arms are axially spaced apart on the arm shaft, and the two transmission arms are respectively the first transmission arm 51.
  • each of the transmission armes is mounted on the arm shaft 52 via a corresponding one-way bearing 53, each of the transmission arms being located on a side of the arm shaft adjacent to the cam shaft 48, each of the transmission arms
  • a first returning spring 50 is connected to each of the driving arms, and each of the driving arms is provided with a pushing roller 45.
  • the side of the driving arm adjacent to the camshaft has a recessed recess with a recess facing downward, and the camshaft is axially spaced.
  • Two transmission cams respectively arranged in one-to-one correspondence with the respective transmission arms for sequentially and continuously pushing the corresponding transmission arm when the arm shaft rotates to drive the transmission arm to rotate the arm shaft are provided.
  • the cams are respectively a first transmission cam 49 that is pushed into engagement with the first transmission arm and a second transmission cam that is pushed and engaged with the second transmission arm. Under the action of the return spring, the pushing roller on each transmission arm The outer peripheral surface of the corresponding transmission cam is always in close contact with each other.
  • the contour curve of the outer peripheral surface of the transmission cam is designed according to the swing angle of the transmission arm, and the two transmission cams have the same shape and are symmetrically arranged at an angle of 180 degrees.
  • the anti-storage mechanism includes a lever having a rotation axis parallel to the axis of the energy storage shaft and a rotation plate 44 disposed on the rotation axis of the transmission arm parallel to the rotation axis of the lever, and the rotation plate 44 is provided for pushing the corresponding a pushing portion of the driving arm
  • the lever includes a cross bar 60 extending in the left-right direction and a vertical rod 59 fixed in the middle of the cross bar, the cross bar and the vertical bar form a T-shaped structure, and the left end of the cross bar is a lever power arm
  • the power arm of the lever is provided with a force receiving structure for pushing the lever by the chain joint of the die unit, and the force structure comprises a force block and a second return spring disposed between the force block and the power arm.
  • the vertical rod of the lever is connected to the rotating plate through the connecting rod 56 to rotate the rotating plate through the connecting rod 56 when rotating, so that the rotating plate pushes the driving arm to be disengaged from the corresponding driving cam 49, and the left end of the connecting rod is hingedly connected with the rotating plate
  • the right end of the connecting rod is hingedly connected to the vertical rod, and the third return spring 61 is connected to the right end of the cross rod.
  • Item 70 in Fig. 1 denotes a trip roller disposed on the arm of the buffer;
  • Item 69 represents a trip release device for mating with the trip roller, the structure of the trip release device and the structure of the closing trip device Similarly, the trip release device includes a split storage lock shaft 70 and a split rotary shutter 69.
  • the output shaft 76 is provided with an output arm 78 and a buffer arm 77.
  • the buffer arm 77 is an integrated arm, and the output arm is connected with an output rod 40 for driving connection with the corresponding moving contact.
  • the integrated arm has a buffer pin hole, a roller pin hole and a connecting rod pin hole.
  • the connecting pin hole is connected with a connecting member through the first pin shaft 33, and the connecting member is connected to the opening spring through the opening spring chain 36.
  • a brake energy storage roller 32 for urging engagement with the energy storage shaft cam 58 is mounted in the roller pin hole through the second pin shaft 31, and the buffer passes through the third pin 75 and the integrated crank which are bored in the buffer pin hole.
  • the arms are connected.
  • the buffer is a hydraulic buffer, and the buffer comprises an inner cylinder 3 and an outer cylinder 1 which is coaxially sleeved on the outer periphery of the inner cylinder, and has an annular gap between the inner and outer cylinders, and the cylinder of the inner cylinder is provided with a communication inner cylinder 3
  • the first radial oil hole 18 and the second radial oil hole 16 of the inner cavity and the annular gap at both ends in the embodiment, when the closing spring releases energy, the piston rod moves toward the second radial oil hole, and the second
  • the diameter of the radial oil hole 16 is larger than the diameter of the first radial oil hole 18.
  • the piston of the inner cylinder is slidably fitted with a piston 5, and the piston is provided with a piston rod.
  • the piston rod includes a rod body 13 connected to the piston and a joint 14 disposed on the rod body.
  • the joint 14 is provided with a hinge hole 15 and the hinge hole is a long hole whose length extends in the same direction as the length of the piston rod extends,
  • a third pin disposed on the integrated arm is disposed in the hinge hole.
  • the piston comprises an inner sleeve 5-2 and an outer sleeve 5-3 which are sleeved inside and outside the coaxial line, and the inner sleeve 5-2 is sleeved and sleeved on the piston rod, and the inner sleeve constitutes a sliding engagement portion with the piston rod guiding sliding fit, the outer sleeve Sealing and slidingly engaging with the inner cavity wall of the inner cylinder, the piston rod is provided with a first limiting structure and a second limiting structure for limiting the reciprocating movement limit of the piston on the piston rod, and the spacing between the first and second limiting structures
  • the first and second limiting structures are respectively formed by the retaining ring 4 and the snap ring 6 assembled on the piston rod, which are larger than the axial length of the sliding engaging section.
  • the inner and outer ends of the sleeve are connected by an annular connecting plate 5-1, and the annular connecting plate is provided with an axial oil hole 17 extending through the annular connecting plate in the axial direction, and the axial oil hole comprises four circumferentially evenly surrounding the annular connecting plate.
  • a lug hole is arranged on the piston rod, and a piston cover 7 for blocking a corresponding end hole of the axial oil hole 17 is disposed on a side of the piston.
  • the piston cover is located on a side of the second radial oil hole, and the piston cover is opened.
  • There is a auxiliary separation hole 19 extending through the piston cover in the axial direction.
  • the auxiliary separation hole and the axial oil hole on the piston are mutually offset in the axial direction of the piston, and the piston cover is provided with a chamfered structure 20.
  • Item 12 in the figure denotes a cover for preventing the piston and the piston cover from coming out of the inner cylinder;
  • Item 10 denotes a snap ring for limiting the cover 12;
  • Items 8, 9, and 11 each represent a seal ring;
  • Item 3 represents hydraulic oil.
  • the sequence in “sequential and continuous push” refers to the first drive cam 49 pushing the first drive arm 51 to drive the arm shaft to rotate, and then the second The driving cam pushes the second driving arm 64 to drive the arm shaft to rotate.
  • the continuous in the “sequential and continuous pushing” means that the second driving cam starts to push the second driving arm and the first driving cam ends the pushing.
  • the closing spring energy storage is required, the power of the motor is transmitted to the camshaft via the transition shaft to drive the camshaft to rotate counterclockwise (the visual angle in FIG. 1).
  • the first transmission cam drives the arm shaft to rotate clockwise.
  • the arm shaft drives the energy storage shaft to rotate clockwise through the sprocket chain. The energy storage tweezers and the first chain joint pass.
  • the closing spring chain drives the closing spring to store energy; when the first transmission cam pushes the first transmission arm to the highest point, the second transmission arm is reset to the lowest point, and then the first transmission arm begins to rotate counterclockwise to reset, The second transmission cam starts to push the second transmission arm to rotate clockwise. Under the driving of the second transmission arm, the arm shaft uninterruptedly drives the energy storage shaft to rotate clockwise, and the closing spring continues to store energy. During the energy storage process of the closing spring, the closing spring will give the arm shaft a counterclockwise rotation force, but since the transmission arm is limited by the transmission cam, the force of the closing spring will not be transmitted to the motor through the transmission mechanism. The stability of the energy storage process is ensured.
  • the energy storage tweezers rotates through the corresponding node, and the closing of the energy storage shaft is restricted by the closing and releasing device, thereby limiting the rotation of the energy storage shaft. Therefore, the closing spring is maintained in the energy storage state.
  • the closing and closing device releases the limit of the energy storage tweezers, and the closing spring drives the arm shaft to rotate counterclockwise, and the one-way bearing As a function, the first and second transmission arms are not affected by the counterclockwise rotation of the arm shaft and remain in the original position.
  • the energy storage tweezers rotates through the corresponding node, and the closing spring will give the energy storage shaft a clockwise rotation force, the first chain joint contacts the force block, and the force block There is downward pressure.
  • the force block drives the crossbar and the vertical rod of the lever to rotate counterclockwise.
  • the vertical rod drives the rotating plate to rotate counterclockwise through the connecting rod, and the rotating plate will drive the rotating arm.
  • the jacking off causes the transmission arm to disengage from the corresponding transmission cam, and then the closing trip device limits the energy storage shaft.
  • the motor can only drive the transmission cam to idle because the transmission cam is disengaged from the transmission arm. The motor will not burn out due to stalling.
  • the working process of the circuit breaker operating mechanism is as follows: the motor drives the energy storage shaft to rotate through the transmission mechanism, and the tweezers unit compresses the closing spring energy through the closing spring chain, and when the closing spring energy storage is in place, the closing release device Cooperating with the energy storage tweezers on the energy storage shaft sprocket to prevent the energy storage shaft from continuing to rotate, the closing spring is maintained in the energy storage state, and when the moving and static contacts are required to be closed, the closing and releasing device is released
  • the limit of the energy storage tweezers under the action of the closing spring, the energy storage shaft sprocket drives the energy storage shaft to rotate. In the process, the energy storage shaft cam 58 and the opening energy storage roller 32 on the integrated arm are pushed together.
  • the integrated arm drives the output shaft to rotate, and the output arm moves the movable contact toward the corresponding static contact through the output pull rod to realize the closing, and at the same time, the opening spring is compressed and stored, defining the first and second radial directions.
  • the arrangement direction of the right hole is the first end direction, and then the two ends of the hinge hole are the head end and the end end respectively, and at the same time, the integrated arm drive pin shaft moves toward the end of the hinge hole, since the hinge hole is a long hole extending in the front and rear direction So at the closing Initially, the piston rod does not move, the damper does not dampen the integrated arm, ensuring the initial closing speed of the moving contact, and then the pin moves to the end of the hinge hole, the piston rod starts to move the piston, and the hydraulic oil is assisted.
  • the separation hole enters between the piston cover and the piston to ensure that the piston cover and the piston are smoothly separated.
  • the axial oil hole on the piston is not blocked by the piston cover, and the hydraulic oil on the side of the piston on the side of the second radial oil hole passes through two The line flows to the front side of the piston, one line is the axial oil hole on the piston, and the other line is the second radial oil hole, the annular gap and the first radial oil hole, and the two lines ensure the flow area of the hydraulic oil.
  • the damping effect of the hydraulic oil is reduced, thereby reducing the damping effect of the buffer on the integrated arm, and reducing the influence of the buffer on the closing process of the moving contact, and the aperture of the second radial oil hole is larger than the first The diameter of the radial oil hole, which can further improve the flow capacity of the hydraulic oil, and further reduce the damping effect of the hydraulic oil.
  • the head direction moves, and the integrated arm moves the pin shaft toward the head end of the hinge hole. Since the hinge hole is a long hole, the piston rod does not move forward at the beginning of the opening, and the buffer does not dampen the integrated arm. The initial speed of the moving contact is ensured, and then the pin moves to the first end of the hinge hole, and the piston rod drives the piston to move.
  • the end of the piston adjacent to the piston cover is pressed against the corresponding end of the piston cover by the hydraulic oil.
  • the axial oil hole is blocked by the piston cover, and the hydraulic oil on the piston on the side where the first radial oil hole is located can only flow to the piston through the first radial oil hole, the annular gap and the second radial oil hole.
  • the piston is composed of an inner sleeve, a jacket and an annular connecting plate disposed between the inner and outer sleeves, so that the weight of the piston can be reduced, the manufacturing cost of the buffer can be reduced, and the structural strength of the rack is high, compared with the original rack. It meets the demanding requirements of the high-power spring operating mechanism and the demanding use of the frame.
  • the frame adopts a detachable structure and is divided into three parts.
  • the left mounting plate, the right mounting plate and the opening spring tube, the closing spring tube, the opening spring tube and the closing spring tube are integrally formed side by side, and the opening spring tube is fixed at the double end of the left mounting plate, and the closing spring tube It is fixed on the right side of the right mounting.
  • the design of the frame adopts three.
  • the casting difficulty is greatly reduced, and the machining method of positioning and matching is also adopted in machining, which ensures the coaxiality of the left and right mounting plates, and the processing is simple and reliable.
  • the detachable features of the rack are used to meet the replacement requirements of mass production parts in the mechanical design, reduce the cost, ensure the accuracy, and provide economic benefits;
  • the frame adopts the cast aluminum structure to make the machine The weight of the frame is greatly reduced, the mechanical performance of the spring operating mechanism is improved, and the strength of the frame is designed to meet the design requirements by rationally arranging the reinforcing rib structure, thereby reducing the material cost.
  • the plate thickness direction of the mounting plate connecting plate and the spring tube connecting plate may also extend in the up and down direction; the left and right positioning axes may not be provided, and the second locking bolt is required to be
  • the left and right sides of the left and right mounting plates are respectively screwed with a lock nut; the first and second limit structures may also be limit nuts; the first and second radial oil holes may have the same aperture; the piston rod and The joint can also be integrally formed; of course, the buffer can also be a pneumatic buffer, in which case the buffer can comprise only one cylinder, the cylinder is provided with a piston, the piston rod is arranged on the piston; the buffer arm and the connection are used for connection.
  • the arm of the opening spring chain can also be set separately.
  • the opening spring tube and the closing spring tube can also be welded and fixed to the left mounting plate and the right mounting plate respectively; the opening spring sleeve
  • the closing spring sleeve and the corresponding spring seat guiding sleeve can also be integrally provided; the number of springs in the opening spring and the closing spring can also be set according to requirements, for example, the opening spring includes a spring or three springs, closing bomb It includes two springs or four springs; the number of transmission arm and transmission cam can also be three, four or more, and the number of transmission arm and transmission cam is three as an example.
  • the driving arm can be evenly arranged around the circumference of the arm shaft.
  • the first return spring can be omitted, and the three driving arms are mounted on the arm shaft through the same bushing, and the sleeve and the arm shaft are arranged.
  • the second transmission arm rotates clockwise, at which time the first transmission cam is disengaged from the first transmission arm; when the second transmission cam pushes the second transmission arm to the highest position, the third transmission cam starts and the third transmission
  • the arm contacts and pushes the third drive arm to rotate clockwise, at which time the second drive cam is disengaged from the second drive arm, when the third drive is convex
  • the first transmission arm rotates to the initial position, and the first transmission cam starts to contact with the first transmission arm and pushes the first transmission arm to rotate clockwise, so that the cycle
  • the transmission ratio between the energy storage shaft sprocket and the crank shaft sprocket is large enough, there may be only one transmission arm.
  • the transmission cam can only realize the completion energy storage of the closing spring by pushing one transmission arm to rotate.
  • the closing spring can also store energy when the arm shaft rotates counterclockwise; the tweezers unit can also push and cooperate with the bearing block through the energy storage tweezers to realize the pushing lever rotation.
  • the second return spring may not be provided.
  • the bearing block may be directly fixed on the lever, or the bearing block is not provided, and the forceps unit directly pushes the lever to rotate, and the bearing structure is supported by the upper end of the left end of the lever.
  • the third return spring can also be omitted.
  • the lever can be manually reset; the vertical rod can also be omitted, and the right end of the link can be hinged to the left or right end of the lever; the connecting rod can also be Link sections connected in sequence or three-hinge components.

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

Abstract

本发明涉及弹簧操动机构,包括机架,机架上设置有缓冲器和轴线沿左右方向延伸的用于与相应断路器的动触头传动连接的输出轴,输出轴上装配有缓冲器拐臂,缓冲器拐臂上设置有销轴,缓冲器的活塞杆上设置有铰接孔,所述销轴穿设与所述铰接孔中,所述铰接孔为长度延伸方向与活塞杆长度延伸方向一致的长孔。本发明提供了一种不影响动触头合闸、分闸初始速度的弹簧操动机构。

Description

弹簧操动机构 技术领域
本发明涉及一种用于断路器的弹簧操动机构。
背景技术
操动机构是高压输变电领域的重要设备,是高压断路器的重要组成部分,高压断路器的分合闸操作是通过操动机构来实现的。高压断路器的操动机构主要分为液压操动机构和弹簧操动机构两种,液压操动机构具有分、合闸时间短,性能稳定等优点,但也存在结构复杂、成本高、容易漏油、易受使用环境影响等缺点。而弹簧操动机构不存在漏油问题,且具有成本低、结构简单、性能稳定可靠、使用寿命长等特点,适合在各种电压等级的断路器上广泛使用,目前弹簧操动机构已呈逐步取代液压操动机构的趋势。现有的一种弹簧操动机构如中国专利CN202126942U公开的“一种适用于高压和超高压断路器的大功率弹簧操动机构”,该弹簧操动机构包括机架,机架包括左右间隔设置的左、右安装板,左、右安装板的上、下端分别通过上、下连接螺杆固定连接,左、右安装板上设置有储能装置,储能装置包括电机和储能轴,储能轴上设置有通过合闸弹簧链条与相应合闸弹簧连接的储能掣子,储能轴上固设有储能轴凸轮和储能轴链轮,储能轴链轮上设置有合闸滚轮,储能轴旁设置有与合闸滚轮配合的合闸脱扣装置,储能轴链轮通过传动机构与电机的动力输出端传动连接,传动机构包括与储能轴平行设置的第一轴和第二轴,第二轴通过链条与电机的动力输出端传动连接,第一轴上固设有第一轴齿轮和第一轴链轮,第一轴链轮通过链条与储能轴链轮传动连接,第二轴上固设有与第一轴齿轮啮合传动的第二轴齿轮。在使用时,电机的动力传递给第二轴,通过第一、第二轴齿轮的啮合传动,动力传递到第一轴上,然后动力通过第一轴链轮和储能轴链轮的传动传递到储能轴上。弹簧操动机构还包括与储能轴平行设置的输出轴,输出轴上装配有缓冲器拐臂和输出拐臂,在输出拐臂上设置有用于与储能轴凸轮顶推配合的分闸储能滚轮和通过分闸弹簧链条与相应分闸弹簧连接的连接件,分闸储能滚轮、连接件均通过销轴装配于输出拐臂上,缓冲器拐臂通过销轴与缓冲器的活塞杆连接,输出拐臂上还连接有与相应动触头传动连接的输出拉杆。输出拐臂旁设置有用于与输出拐臂限位配合的分闸脱扣装置。其中分闸弹簧设置于分闸弹簧筒内,合闸弹簧设置于合闸弹簧筒内,分闸弹簧筒、合闸弹簧筒上下设置,分闸弹簧筒、合闸弹簧筒设置于左、右安装板的上端。合闸弹簧和分闸弹簧的前侧分别设置有换向链轮,合闸弹簧和分闸弹簧均包括弹簧组件,弹簧组件包括前、后弹簧座及顶设于前、后弹簧座之间的弹簧,弹簧的中心穿设有传动杆,分闸弹簧链条 通过换向链轮换向后与分闸弹簧的传动杆连接;合闸弹簧链条通过换向链轮换向后与合闸弹簧的传动杆连接,为了保证传动杆运动的稳定性,传动杆的前端导向移动穿设于前弹簧座上,传动杆的后端导向移动穿设于后弹簧座上,传动杆上于后弹簧座的后侧旋装有防止后弹簧座由传动杆上脱出的调节螺母。
该弹簧操动机构的工作过程为:当需要合闸弹簧储能时,电机带动储能轴转动,储能轴上的接头通过链条拉动合闸弹簧储能,在储能结束后合闸脱扣装置与储能轴链轮上的合闸滚轮限位配合以防止储能轴继续转动,从而将合闸弹簧保持于储能状态,当需要合闸时,合闸脱扣装置解除对滚轮的限位,合闸弹簧释放能量,储能轴上的储能轴凸轮58与带动输出轴转动,输出拐臂带动分闸弹簧储能,同时通过输出拉杆带动动触头与对应静触头合闸,在此过程中缓冲器对输出轴起到阻尼作用,在动、静触头合闸后,分闸脱扣装置限制输出轴转动,从而将分闸弹簧保持于储能状态,当需要动、静触头分闸时,分闸脱扣装置解除对输出轴的限位,在分闸弹簧的作用力下,输出拐臂带动储能轴转动,输出拉杆带动相应动、静触头分闸,此过程中缓冲器对输出轴起到阻尼作用。现有的这种弹簧操动机构储能装置存在的问题在于:1、缓冲器在分闸、合闸过程中对输出轴的阻尼效果相同,这是非常不符合弹簧操动机构的实际需求的,因为在实际工作中,缓冲器对合闸过程的影响越小越好,合闸弹簧的合闸作用力希望完全被传递到动触头上而不是被缓冲器吸收,缓冲器更多的是对分闸作用力的吸收;2、冲器在动、静触头的合闸、分闸之初就对输出轴产生阻尼效果,这会影响到动、静触头的合闸、分闸初始速度,动触头容易受到电弧的损坏;3、分闸弹簧、合闸弹簧上下设置增加了弹簧操动机构在上下方向占用的空间,另外上连接螺杆也无法保证左、右安装板之间的连接强度;4、通过链轮和齿轮实现电机与储能轴之间的动力传递,链轮和齿轮的传动过程是双向的,在合闸弹簧储能过程中,电机带动合闸弹簧储能的同时,合闸弹簧也会通过链轮和齿轮给电机的转子一个反向旋转的作用力,电机需要很大的功率才能完成储能弹簧的储能过程,这就需要采用大功率的电机,大功率电机的使用增加了产品的制作成本;同时,合闸弹簧在释放能量时,储能轴的转动也会通过链条和齿轮传递给电机的转子而带动转子转动,转子的空转不仅增加了耗能,同时也会降低电机的使用寿命;5、在弹簧操动机构中,为了保证设备的安全可靠运行,通常设置有防过储能机构,防过储能机构的作用是在合闸弹簧储能结束后,防止电机继续向合闸弹簧输送动力,现有技术是在合闸弹簧储能结束后通过电器件控制电机停止运转,以停止向合闸弹簧输送动力,这种防过储能机构存在的问题在于:若电器件失效,电机继续运行,而由于此时弹簧操动机构已经储能到位,机械闭锁生效,会造成电机堵转烧毁、零部件损坏等故障;6、为了实现传动杆的可靠导向,传 动杆的前、后端分别导向移动穿设于前弹簧座和后弹簧座上,这样导致传动杆的长度必须做的很长,最起码要大于弹簧的轴向长度,而为了避免传动杆向前运动时与对应换向链轮发生干涉,就必须保证换向链轮与传动杆之间有足够的距离,这样就会增加整个弹簧操动机构所占用的空间,不利于弹簧操动机构的小型化制作。
发明内容
本发明的目的在于提供一种不影响动触头合闸、分闸初始速度的弹簧操动机构。
为了解决上述问题,本发明的技术方案为:
弹簧操动机构,包括机架,机架上设置有缓冲器和轴线沿左右方向延伸的用于与相应断路器的动触头传动连接的输出轴,输出轴上装配有缓冲器拐臂,缓冲器拐臂上设置有销轴,缓冲器的活塞杆上设置有铰接孔,所述销轴穿设与所述铰接孔中,所述铰接孔为长度延伸方向与活塞杆长度延伸方向一致的长孔。
所述缓冲器包括内缸和同轴线套设于内缸外围的外缸,内缸的内腔中导向滑动装配有活塞,所述活塞杆设置于所述活塞上,内、外缸之间具有环形间隙,内缸的缸体两端设有连通内缸的内腔与环形间隙的径向油孔,所述活塞具有与活塞杆导向滑动配合的滑动配合段,活塞杆上设置有限制活塞在活塞杆上往复移动极限的第一、第二限位结构,第一、第二限位结构之间的间距大于滑动配合段的轴向长度,活塞上设置有沿活塞轴向贯穿活塞的轴向油孔,活塞杆上于活塞的一侧设置有用于封堵轴向油孔对应端孔口的活塞盖。
机架包括分闸弹簧筒、合闸弹簧筒和下端连接在一起的左、右安装板,分闸弹簧筒中设置有分闸弹簧,合闸弹簧筒中设置有合闸弹簧,分闸弹簧筒、合闸弹簧筒左右并列的一体成型,分闸弹簧筒、合闸弹簧筒分别通过固定结构与左安装板、右安装板固定连接。
弹簧操动机构还包括分别设置于合闸弹簧、分闸弹簧前侧的换向链轮,合闸弹簧、分闸弹簧均包括前、后弹簧座和传动杆,各换向链轮上分别绕经有与对应传动杆前端连接的链条,后弹簧座上固设有轴线沿前后方向延伸的传动杆导向套,所述传动杆导向移动穿设于所述传动杆导向套的内孔中,所述传动杆位于所述前弹簧座的后侧,所述前弹簧座上开设有轴线沿前后方向延伸的供对应链条穿过的链条穿孔。
机架上还设置有电机和与输出轴传动连接的轴线沿左右方向延伸的储能轴,电机通过传动机构与储能轴传动连接,传动机构包括与储能轴平行设置的凸轮轴和拐臂轴,凸轮轴与电机的动力输出端传动连接,拐臂轴与所述储能轴传动连接,拐臂轴上通过单向轴承装配有至少两个传动拐臂,凸轮轴上固设有分别与各传动拐臂一一对应设置的用于在拐臂轴转动时顺序且连续顶推对应传动拐臂以使传动拐臂带动拐臂轴转动的传动凸轮。
各传动拐臂沿拐臂轴的轴向间隔设置,各传动拐臂均位于所述拐臂轴临近所述凸轮轴的一侧,各传动拐臂上均连接有第一复位弹簧。
所述传动拐臂和传动凸轮均有两个,两个传动凸轮的形状相同且呈180度夹角对称布置。
弹簧操动机构还包括防过储能机构,防过储能机构包括转动轴线与储能轴的轴线相平行的杠杆和设置于传动拐臂旁的转动轴线与所述杠杆的转动轴线相平行的转动板,转动板上设有用于顶推所述传动拐臂的顶推部,杠杆的动力臂上设有用于被所述掣子单元顶推而使杠杆转动的受力结构,杠杆通过连杆与所述转动板相连以在杠杆转动时通过连杆带动转动板转动进而使转动板推动传动拐臂与对应传动凸轮脱离。
所述杠杆包括沿左右方向延伸的横杆及固设于所述横杆中部的竖杆,所述连杆连接于所述竖杆上,所述受力结构设置于所述横杆的左端,所述横杆的右端连接有第二复位弹簧。
所述连杆的左端与转动板铰接相连,所述连杆的右端与所述竖杆铰接相连。
本发明的有益效果为:铰接孔为一个长度沿活塞杆长度方向延伸的长孔,缓冲器拐臂通过穿设于铰接孔中的销轴与活塞杆相连,将铰接孔的两端分别定义为首端和末端,现以合闸时缓冲器拐臂带动销轴向铰接孔末端移动为例对本发明的有益效果进行详细说明,在动、静触头分闸时,销轴位于铰接孔的首端,当动、静触头开始合闸时,缓冲器拐臂先带动销轴朝末端移动,由于铰接孔为一个长孔,所以销轴可以先在铰接孔中移动一段距离,销轴在铰接孔中移动的这段时间内,活塞杆并不移动,也就是说缓冲器对缓冲器拐臂没有阻尼作用,不会影响动触头的初始合闸速度,随后销轴移动至铰接孔的末端,活塞杆开始带动活塞继续移动;在需要动、静触头分闸时,缓冲器拐臂带动销轴在铰接孔中朝首端移动,由于铰接孔为一个长孔,因此在最初,活塞杆并不会移动,也就是说缓冲器对缓冲器拐臂没有阻尼作用,不会影响动触头的初始分闸速度,随后销轴移动至铰接孔的首端,活塞杆开始带动活塞移动,通过设置一个长孔就能够保证动触头的合闸、分闸初始速度,本缓冲器的结构非常简单,制作成本低。
附图说明
图1是本发明中弹簧操动机构的一个实施例的结构示意图;
图2是图1中机架的结构示意图;
图3是图1中分闸弹簧、合闸弹簧的结构示意图;
图4是图1中缓冲器的结构示意图;
图5是图4中内缸的结构示意图;
图6是图4中活塞盖的结构示意图;
图7是图4中活塞的结构示意图;
图8是图7的左视图;
图9是合闸过程中活塞与活塞盖的配合示意图;
图10是分闸过程中活塞与活塞盖的配合示意图;
图11是图1中防过储能机构的结构示意图。
具体实施方式
弹簧操动机构的实施例如图1~11所示:包括机架,机架包括分闸弹簧筒79、合闸弹簧筒86和下端通过连接件连接在一起的左安装板81和右安装板80,分闸弹簧筒79、合闸弹簧筒86左右并列的一体铸造成型,分闸弹簧筒79、合闸弹簧筒86水平设置,左、右安装板也分别一体铸造成型,分闸弹簧筒、合闸弹簧筒和左、右安装板均为铸铝件,分闸弹簧筒、合闸弹簧筒分别通过固定结构与左安装板、右安装板固定连接,固定结构为螺栓连接结构。固定结构包括一体设置于对应弹簧筒上的板厚沿左右方向延伸的弹簧筒连接板和一体设置于对应安装板上的板厚方向沿左右方向延伸的安装板连接板,安装板连接板和弹簧筒连接板上开设有轴线沿左右方向延伸的第一螺栓穿孔,固定结构还包括穿设于螺栓穿孔中的第一锁紧螺栓。连接件包括固设于左安装板81上的轴线沿左右方向延伸的左定位轴82和固设于右安装板80上的与左定位轴同轴线设置的右定位轴83,左、右定位轴均为空心轴,左、右定位轴的内孔中穿设有第二锁紧螺栓,通过左、右定位轴的端面接触定位,保证了左、右安装板的安装精度,同时左、右定位轴还保证了第二锁紧螺栓的连接强度。考虑到左、右安装板的加工精度问题,在左、右安装板上设置有四个机加工定位孔,通过对穿定位,保证机加工时的尺寸、形位公差精度。分闸弹簧筒79、合闸弹簧筒86的上端均一体成型有连接凸台88,各连接凸台的上端面为用于与断路器面接触连接的平面,平面上设置有螺栓穿孔,连接凸台一方面可以加强左、右弹簧筒的强度,同时通过平面配合安装的螺栓与断路器壳体固定,保证机架与断路器的连接处是面接触。为了增加各弹簧筒的强度,在各弹簧筒上均一体成型有长条筋板、第一圆环筋板,在分闸弹簧止位处设置有第二圆环筋板,在分闸、合闸弹簧支撑轮处设置有轮轴孔加固筋,在各弹簧筒与对应安装板连接处设置有增加强度的筋板,保证了分闸、合闸弹簧筒的强度要求。分闸弹簧筒中设置有分闸弹簧,合闸弹簧筒中设置有合闸弹簧,分闸弹簧、合闸弹簧的前侧分别设置有供分闸弹簧链条、合闸弹簧链条换向的换向链轮38,项39表示换向链轮的轮轴,分闸弹簧23、合闸弹簧22均包括前弹簧座21、后 弹簧座和前端用于通过第二链条接头25与对应链条传动连接的传动杆26,合闸弹簧的后弹簧座又称为合闸导向盘28,分闸弹簧的后弹簧座又称为分闸导向盘29,链条指的是分闸弹簧链条和合闸弹簧链条,分闸弹簧的前、后弹簧座之间顶设有两个弹簧,两个弹簧的旋向相反,合闸弹簧的前、后弹簧座之间顶设有三个弹簧,三个弹簧中相邻两个弹簧的旋向相反,分闸弹簧的弹簧外围和合闸弹簧的弹簧外围均同轴线套设有弹簧筒24,弹簧筒24的内孔中同轴线固设有弹簧座导向套30,后弹簧座导向移动装配于对应弹簧座导向套中,后弹簧座上朝前凸设有分别与对应弹簧定位配合的定位凸台,分闸弹簧的各弹簧的后端分别定位套设于分闸弹簧的后弹簧座的对应各定位凸台上,合闸弹簧的各弹簧的后端分部定位套设于合闸弹簧的后弹簧座的对应各定位凸台上,后弹簧座上固设有轴线沿前后方向延伸的传动杆导向套27,传动杆导向移动穿设于对应传动杆导向套的内孔中,传动杆位于对应前弹簧座的后侧,前弹簧座上开设有轴线沿前后方向延伸的供对应链条穿过的穿孔,传动杆为一个螺杆,传动杆上于传动杆导向套的后侧旋装有调节螺母。图2中项87表示与右安装板一体成型的供输出轴安装的输出轴空心安装柱;项85表示与右安装板一体成型的供储能轴安装的储能轴空心安装柱。
弹簧操动机构还包括防过储能机构、缓冲器65和轴线沿左右方向延伸的输出轴76和储能轴43,储能轴43上设置有储能轴凸轮58和通过合闸弹簧链条37与合闸弹簧连接的掣子单元,掣子单元包括装配于储能轴42上的储能掣子34和装配于储能掣子34上的第一链条接头35,项41表示供第一链条接头35安装的转动轴,其中第一链条接头与储能掣子的装配关系及储能掣子与储能轴的装配关系均属于现有技术,在此不再详述。储能轴上还设置有储能轴链轮27,储能轴旁设置有合闸脱扣装置63,合闸脱扣装置包括合闸储能锁轴62、与合闸储能锁轴配合的合闸转动挡板以及驱动合闸转动挡板转动的驱动机构,在正常情况下合闸转动挡板被弹簧限位至可以阻挡合闸储能锁轴动作,所以当储能掣子34转动至合闸储能锁轴位置时,储能掣子被合闸储能锁轴阻挡而不能继续转动,合闸弹簧保持于储能状态,当需要合闸脱扣装置解除对储能掣子的限位时,驱动机构驱动合闸转动挡板转动,从而使合闸转动挡板让开合闸储能锁轴,在合闸弹簧作用力下,储能掣子推开合闸储能锁轴后继续转动。弹簧操动机构还包括通过传动机构与储能轴链轮57传动连接的电机47。传动机构包括与储能轴平行设置的凸轮轴48和拐臂轴52,凸轮轴48与电机的动力输出端传动连接,拐臂轴52通过链轮、链条机构与储能轴42传动连接,链轮、链条机构包括固设于储能轴上的储能轴链轮27、固设于拐臂轴上的拐臂轴链轮54和传动连接于两个链轮之间的链轮链条55,拐臂轴上沿轴向间隔设置有两个传动拐臂,两个传动拐臂分别为第一传动拐臂51 和第二传动拐臂64,各传动拐臂均通过各自对应的单向轴承53装配于拐臂轴52上,各传动拐臂均位于拐臂轴临近凸轮轴48的一侧,各传动拐臂上均连接有第一复位弹簧50,各传动拐臂上均设置有顶推滚轮45,传动拐臂上临近凸轮轴的一侧具有凹口朝下的让位凹部,凸轮轴上沿轴向间隔固设有两个分别与各传动拐臂一一对应设置的用于在拐臂轴转动时顺序且连续顶推对应传动拐臂以使传动拐臂带动拐臂轴转动的传动凸轮,两个传动凸轮分别为与第一传动拐臂顶推配合的第一传动凸轮49和与第二传动拐臂顶推配合的第二传动凸轮,在复位弹簧的作用下,各传动拐臂上的顶推滚轮始终紧贴着对应传动凸轮的外周面,传动凸轮的外周面轮廓曲线是根据传动拐臂的摆动角度设计的,两个传动凸轮的形状相同且呈180度夹角对称布置。防过储能机构包括转动轴线与储能轴的轴线相平行的杠杆和设置于传动拐臂旁的转动轴线与杠杆的转动轴线相平行的转动板44,转动板44上设有用于顶推对应传动拐臂的顶推部,杠杆包括沿左右方向延伸的横杆60及固设于横杆中部的竖杆59,横杆和竖杆构成T字形结构,横杆的左端为杠杆的动力臂,杠杆的动力臂上设有用于被被掣子单元的链条接头顶推而使杠杆转动的受力结构,受力结构包括受力块及设置于受力块与动力臂之间的第二复位弹簧43,杠杆的竖杆通过连杆56与转动板相连以在转动时通过连杆56带动转动板转动进而使转动板推动传动拐臂与对应传动凸轮49脱离,连杆的左端与转动板铰接相连,连杆的右端与竖杆铰接相连,横杆的右端连接有第三复位弹簧61。图1中项70表示设置于缓冲器拐臂上的分闸滚轮;项69表示用于与分闸滚轮配合的分闸脱扣装置,分闸脱扣装置的结构与合闸脱扣装置的结构相同,分闸脱扣装置包括分闸储能锁轴70和分闸转动挡板69。
输出轴76上止转套设有输出拐臂78和缓冲器拐臂77,缓冲器拐臂77为一个集成拐臂,输出拐臂上连接有用于与相应动触头传动连接的输出拉杆40,集成拐臂上设有缓冲器销孔、滚轮销孔和连接件销孔,连接件销孔中通过第一销轴33安装有连接件,连接件通过分闸弹簧链条36与分闸弹簧连接,滚轮销孔中通过第二销轴31安装有用于与储能轴凸轮58顶推配合的分闸储能滚轮32,缓冲器通过穿设于缓冲器销孔中的第三销轴75与集成拐臂相连。缓冲器为液压缓冲器,缓冲器包括内缸3及同轴线套设于内缸外围的外缸1,内、外缸之间具有环形间隙,内缸的缸体上设有连通内缸3两端的内腔与环形间隙的第一径向油孔18和第二径向油孔16,本实施例中在合闸弹簧释放能量时,活塞杆朝第二径向油孔方向移动,第二径向油孔16的孔径大于第一径向油孔18的孔径。内缸的内腔中导向滑动装配有活塞5,活塞上设置有活塞杆,活塞杆包括与活塞相连的杆体13及设置于杆体上的接头14,接头14上设置有铰接孔15,铰接孔为长度延伸方向与活塞杆的长度延伸方向一致的长孔, 集成拐臂上设置的第三销轴穿设于铰接孔中。活塞包括内外同轴线套设的内套5-2和外套5-3,内套5-2导向滑动套设于活塞杆上,内套构成了与活塞杆导向滑动配合的滑动配合段,外套与内缸的内腔壁密封滑动配合,活塞杆上设置有限制活塞在活塞杆上往复移动极限的第一限位结构和第二限位结构,第一、第二限位结构之间的间距大于滑动配合段的轴向长度,第一、第二限位结构分别由装配在活塞杆上的挡圈4和卡环6构成。内、套的一端之间通过环形连板5-1连接,环形连板上设置有沿轴向贯穿环形连板的轴向油孔17,轴向油孔包括四个绕环形连板周向均匀布置的腰形孔,活塞杆上于活塞的一侧设置有用于封堵轴向油孔17的对应端孔口的活塞盖7,活塞盖位于第二径向油孔所在侧,活塞盖上开设有沿轴向贯穿活塞盖的助分离孔19,在活塞轴向上所述助分离孔与活塞上的轴向油孔相互错开,活塞盖上设有倒角结构20。图中项12表示防止活塞、活塞盖由内缸中脱出的封盖;项10表示对封盖12进行限位的卡环;项8、9、11均表示密封圈;项3表示液压油。
下面对本发明中的顺序且连续顶推进行解释说明,“顺序且连续顶推”中的顺序指的是第一传动凸轮49先顶推第一传动拐臂51带动拐臂轴转动,随后第二传动凸轮顶推第二传动拐臂64带动拐臂轴转动,“顺序且连续顶推”中的连续是指第二传动凸轮开始顶推第二传动拐臂这个动作与第一传动凸轮结束顶推第一传动拐臂之间没有时间间隔,当凸轮轴转动时,动力会不间断的传递给拐臂轴从而使拐臂轴连续转动。当需要合闸弹簧储能时,电机的动力经过渡轴传递给凸轮轴从而带动凸轮轴逆时针转动(图1中的视觉角度),在单向轴承的作用下,第一传动凸轮开始推动第一传动拐臂顺时针转动,而由于第二传动凸轮也逆时针转动,所以第二传动拐臂在复位弹簧的作用下沿逆时针转动复位,由于单向轴承的作用第二传动拐臂的复位过程不会影响拐臂轴的顺时针转动,第一传动拐臂带动拐臂轴顺时针转动,拐臂轴通过链轮链条带动储能轴顺时针转动,储能掣子和第一链条接头通过合闸弹簧链条带动合闸弹簧储能;当第一传动凸轮推动第一传动拐臂至最高点时,第二传动拐臂复位至最低点,随后第一传动拐臂开始逆时针转动复位,第二传动凸轮开始推动第二传动拐臂顺时针转动,在第二传动拐臂的带动下,拐臂轴不间断的带动储能轴顺时针转动,合闸弹簧继续储能,在合闸弹簧储能过程中,合闸弹簧会给拐臂轴一个逆时针转动的作用力,但是由于传动拐臂被传动凸轮限位,合闸弹簧的作用力不会经传动机构传递给电机,保证了储能过程的稳定性,在合闸弹簧储能结束后,此时储能掣子转动过相应节点,通过合闸脱扣装置与储能掣子限位配合从而限制储能轴转动,从而使得合闸弹簧保持于储能状态,当需要断路器合闸时,合闸脱口装置解除对储能掣子的限位,合闸弹簧带动拐臂轴逆时针转动,而由于单向轴承的作用,第一个、第二传动拐臂不受拐臂轴逆时针转动的影响,继续保持于原来位置。在 合闸弹簧储能结束后,此时储能掣子转动过相应节点,合闸弹簧会给储能轴一个顺时针转动的作用力,第一链条接头与受力块接触,并对受力块有向下的压力,当第一复位弹簧压缩到最大量时,受力块带动杠杆的横杆和竖杆逆时针转动,竖杆通过连杆带动转动板逆时针转动,转动板将传动拐臂顶起使传动拐臂与对应传动凸轮脱离,随后合闸脱扣装置会对储能轴限位,此时即使电机继续运行,由于传动凸轮与传动拐臂脱离,电机只能带动传动凸轮空转,电机不会因堵转而烧毁。
本断路器操动机构的工作过程为:电机通过传动机构带动储能轴转动,掣子单元通过合闸弹簧链条压缩合闸弹簧储能,当合闸弹簧储能到位时,合闸脱扣装置与储能轴链轮上的储能掣子限位配合以防止储能轴继续转动,合闸弹簧保持于储能状态,当需要动、静触头合闸时,合闸脱扣装置解除对储能掣子的限位,在合闸弹簧作用下,储能轴链轮带动储能轴转动,在此过程中储能轴凸轮58与集成拐臂上的分闸储能滚轮32顶推配合,集成拐臂带动输出轴转动,输出拐臂通过输出拉杆带动动触头朝对应静触头方向运动以实现合闸,与此同时分闸弹簧被压缩储能,定义第一、第二径向右孔的布置方向为首末方向,那么铰接孔的两端分别为首端和末端,与此同时集成拐臂带动销轴朝铰接孔的末端移动,由于铰接孔为一个长度沿前后方向延伸的长孔,因此在合闸之初,活塞杆并不移动,缓冲器不对集成拐臂产生阻尼作用,保证了动触头的合闸初始速度,随后销轴运动至铰接孔的末端,活塞杆开始带动活塞移动,液压油经助分离孔进入活塞盖与活塞之间,保证活塞盖与活塞顺利分离,活塞上的轴向油孔没有被活塞盖封堵,活塞上于第二径向油孔所在的一侧的液压油经两条线路流向活塞前侧,一条线路是活塞上的轴向油孔,另一条线路是第二径向油孔、环形间隙和第一径向油孔,两条线路保证了液压油的流通面积,减小了液压油的阻尼效果,进而减小了缓冲器对集成拐臂的阻尼效果,降低了缓冲器对动触头合闸过程的影响,而由于第二径向油孔的孔径大于第一径向油孔的孔径,这样能进一步的提高液压油的通流能力,进一步的降低液压油的阻尼效果,当合闸结束时,分闸脱扣装置与分闸滚轮限位配合,以将分闸弹簧保持于储能状态。当需要动、静触头分闸时,分闸脱扣装置解除对分闸滚轮的限位,分闸弹簧带动集成拐臂转动,输出拐臂也通过输出拉杆带动动触头朝远离对应静触头方向运动,集成拐臂带动销轴朝铰接孔首端移动,由于铰接孔为一个长孔,因此在分闸之初,活塞杆并不朝前移动,缓冲器不对集成拐臂产生阻尼作用,保证了动触头的分闸初始速度,随后销轴运动到铰接孔的首端,活塞杆带动活塞移动,受液压油作用活塞临近活塞盖的一端与活塞盖的对应端紧贴,活塞上的轴向油孔被活塞盖封堵,活塞上于第一径向油孔所在的一侧的液压油只能通过第一径向油孔、环形间隙和第二径向油孔这一条线路流向活塞后侧,液压油的流通面积小, 液压油的阻尼力大,保证了缓冲器对集成拐臂的阻尼效果,而由于第一径向油孔的孔径小于第二径向油孔的孔径,进一步的增加了液压油的阻尼力,从而实现分合闸操作时不同的阻尼效果。活塞由内、外套及设置于内、外套之间的环形连板构成,这样可以减小活塞的重量,可以降低缓冲器的制作成本;机架的结构强度高,相比原有的机架,满足大功率弹簧操动机构操作功大而对机架苛刻的使用要求;同时减小了机架的设计尺寸,使结构紧凑,不笨重,性能稳定,机架采用可拆结构,分为三部分,左安装板、右安装板和分闸弹簧筒、合闸弹簧筒,分闸弹簧筒、合闸弹簧筒左右并列的一体成型,分闸弹簧筒固定于左安装板双端,合闸弹簧筒固定于右安装板上端,相比原有的机架,大大减小了设计尺寸,优化了安装布置形式,其加工难度小,装配方式灵活;除了降低加工工艺难度,该机架的设计采用三部分单独铸造的方式,使铸造的难度大大减小,在机加工方面也采用了定位配合的加工方式,保证了左、右安装板的同轴度,加工简单可靠,同时在大批量生产的过程中,利用机架的可拆特点,满足机械设计中大批量生产零部件的更换性要求,降低成本,保证精度,提供经济效益;机架采用铸铝结构,使机架的重量大大减少,提高了弹簧操动机构的机械性能,并通过合理的布置加强筋结构使机架的强度达到设计要求,降低了材料成本。
在本发明的其它实施例中:安装板连接板、弹簧筒连接板的板厚方向还可以沿上下方向延伸;左、右定位轴还可以不设,此时需在第二锁紧螺栓上于左、右安装板的左右两侧均旋装有锁紧螺母;第一、第二限位结构还可以是限位螺母;第一、第二径向油孔的孔径也可以一致;活塞杆与接头还可以一体成型;当然缓冲器还可以是一个气压缓冲器,此时缓冲器可以仅包括一个缸体,缸体内设置有活塞,活塞杆设置于活塞上;缓冲器拐臂和用于连接分闸弹簧链条的拐臂也可以分体设置,当不需要后续拆装维修时,分闸弹簧筒、合闸弹簧筒也可以分别与左安装板、右安装板焊接固连;分闸弹簧套、合闸弹簧套和对应弹簧座导向套还可以一体设置;分闸弹簧、合闸弹簧中弹簧的个数还可以根据需要进行设置,比如说分闸弹簧包括一个弹簧或三个弹簧,合闸弹簧包括两个弹簧或四个弹簧;传动拐臂和传动凸轮的个数还可以是三个、四个或更多,以传动拐臂和传动凸轮的个数均为三个为例进行说明,三个传动拐臂可以绕拐臂轴的周向均匀布置,此时第一复位弹簧可以不设,三个传动拐臂通过同一轴套安装于拐臂轴上,轴套与拐臂轴之间设置有单向轴承,三个传动凸轮绕凸轮轴的周向均匀布置,当第一传动凸轮将第一传动拐臂推动至最高位置处后,第二传动凸轮开始与第二传动拐臂接触并推动第二传动拐臂顺时针转动,此时第一传动凸轮与第一传动拐臂脱离;当第二传动凸轮将第二传动拐臂推动至最高位置处后,第三传动凸轮开始与第三传动拐臂接触并推动第三传动拐臂顺时针转动,此时第二传动凸轮与第二传动拐臂脱离,当第三传动凸 轮将第三传动拐臂推动至最高位置处后,第一传动拐臂转动至最初始位置,第一传动凸轮开始与第一传动拐臂接触并推动第一传动拐臂顺时针转动,如此循环;储能轴链轮、拐臂轴链轮之间的传动比足够大时,传动拐臂也可以只有一个,此时传动凸轮仅推动一个传动拐臂转动即能实现合闸弹簧的完成储能;根据合闸弹簧的设置形式的不同,也可以在拐臂轴逆时针转动时,合闸弹簧储能;掣子单元还可以通过储能掣子与承力块顶推配合以实现推动杠杆转动;第二复位弹簧还可以不设,此时承力块可以直接固设于杠杆上,或者承力块也不设,掣子单元直接推动杠杆转动,此时承力结构由杠杆左端的上端面构成;第三复位弹簧也可以不设,此时可以通过手动对杠杆进行复位;竖杆也可以不设,此时连杆的右端可以铰接于杠杆的左端或右端;连杆还可以由两节或三节顺次铰接相连的连杆节组成。

Claims (10)

  1. 弹簧操动机构,包括机架,机架上设置有缓冲器和轴线沿左右方向延伸的用于与相应断路器的动触头传动连接的输出轴,输出轴上装配有缓冲器拐臂,缓冲器拐臂上设置有销轴,缓冲器的活塞杆上设置有铰接孔,所述销轴穿设与所述铰接孔中,其特征在于:所述铰接孔为长度延伸方向与活塞杆长度延伸方向一致的长孔。
  2. 根据权利要求1所述的弹簧操动机构,其特征在于:所述缓冲器包括内缸和同轴线套设于内缸外围的外缸,内缸的内腔中导向滑动装配有活塞,所述活塞杆设置于所述活塞上,内、外缸之间具有环形间隙,内缸的缸体两端设有连通内缸的内腔与环形间隙的径向油孔,所述活塞具有与活塞杆导向滑动配合的滑动配合段,活塞杆上设置有限制活塞在活塞杆上往复移动极限的第一、第二限位结构,第一、第二限位结构之间的间距大于滑动配合段的轴向长度,活塞上设置有沿活塞轴向贯穿活塞的轴向油孔,活塞杆上于活塞的一侧设置有用于封堵轴向油孔对应端孔口的活塞盖。
  3. 根据权利要求1所述的弹簧操动机构,其特征在于:机架包括分闸弹簧筒、合闸弹簧筒和下端连接在一起的左、右安装板,分闸弹簧筒中设置有分闸弹簧,合闸弹簧筒中设置有合闸弹簧,分闸弹簧筒、合闸弹簧筒左右并列的一体成型,分闸弹簧筒、合闸弹簧筒分别通过固定结构与左安装板、右安装板固定连接。
  4. 根据权利要求3所述的弹簧操动机构,其特征在于:弹簧操动机构还包括分别设置于合闸弹簧、分闸弹簧前侧的换向链轮,合闸弹簧、分闸弹簧均包括前、后弹簧座和传动杆,各换向链轮上分别绕经有与对应传动杆前端连接的链条,后弹簧座上固设有轴线沿前后方向延伸的传动杆导向套,所述传动杆导向移动穿设于所述传动杆导向套的内孔中,所述传动杆位于所述前弹簧座的后侧,所述前弹簧座上开设有轴线沿前后方向延伸的供对应链条穿过的链条穿孔。
  5. 根据权利要求1所述的弹簧操动机构,其特征在于:机架上还设置有电机和与输出轴传动连接的轴线沿左右方向延伸的储能轴,电机通过传动机构与储能轴传动连接,传动机构包括与储能轴平行设置的凸轮轴和拐臂轴,凸轮轴与电机的动力输出端传动连接,拐臂轴与所述储能轴传动连接,拐臂轴上通过单向轴承装配有至少两个传动拐臂,凸轮轴上固设有分别与各传动拐臂一一对应设置的用于在拐臂轴转动时顺序且连续顶推对应传动拐臂以使传动拐臂带动拐臂轴转动的传动凸轮。
  6. 根据权利要求5所述的弹簧操动机构,其特征在于:各传动拐臂沿拐臂轴的轴向间隔设置,各传动拐臂均位于所述拐臂轴临近所述凸轮轴的一侧,各传动拐臂上均连接有第一复位弹簧。
  7. 根据权利要求6所述的弹簧操动机构,其特征在于:所述传动拐臂和传动凸轮均有两个,两个传动凸轮的形状相同且呈180度夹角对称布置。
  8. 根据权利要求5所述的弹簧操动机构,其特征在于:弹簧操动机构还包括防过储能机构,防过储能机构包括转动轴线与储能轴的轴线相平行的杠杆和设置于传动拐臂旁的转动轴线与所述杠杆的转动轴线相平行的转动板,转动板上设有用于顶推所述传动拐臂的顶推部,杠杆的动力臂上设有用于被所述掣子单元顶推而使杠杆转动的受力结构,杠杆通过连杆与所述转动板相连以在杠杆转动时通过连杆带动转动板转动进而使转动板推动传动拐臂与对应传动凸轮脱离。
  9. 根据权利要求8所述的弹簧操动机构,其特征在于:所述杠杆包括沿左右方向延伸的横杆及固设于所述横杆中部的竖杆,所述连杆连接于所述竖杆上,所述受力结构设置于所述横杆的左端,所述横杆的右端连接有第二复位弹簧。
  10. 根据权利要求8所述的弹簧操动机构,其特征在于:所述连杆的左端与转动板铰接相连,所述连杆的右端与所述竖杆铰接相连。
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