WO2020103483A1 - 一种熔断器柜 - Google Patents

一种熔断器柜

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Publication number
WO2020103483A1
WO2020103483A1 PCT/CN2019/097188 CN2019097188W WO2020103483A1 WO 2020103483 A1 WO2020103483 A1 WO 2020103483A1 CN 2019097188 W CN2019097188 W CN 2019097188W WO 2020103483 A1 WO2020103483 A1 WO 2020103483A1
Authority
WO
WIPO (PCT)
Prior art keywords
energy storage
stopper
stroke
fuse
force
Prior art date
Application number
PCT/CN2019/097188
Other languages
English (en)
French (fr)
Inventor
王廷华
刘永庆
李长鹏
吴小钊
曹志民
李鹏
周行
赵莹
郑晓果
李猛
Original Assignee
许继集团有限公司
许昌许继德理施尔电气有限公司
国家电网有限公司
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.)
Filing date
Publication date
Application filed by 许继集团有限公司, 许昌许继德理施尔电气有限公司, 国家电网有限公司 filed Critical 许继集团有限公司
Publication of WO2020103483A1 publication Critical patent/WO2020103483A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/122—Automatic release mechanisms with or without manual release actuated by blowing of a fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive

Definitions

  • the invention relates to a fuse cabinet.
  • the fuse cabinet is used as an important overcurrent protection device in various electrical equipment.
  • the fuse cabinet is provided with an overcurrent ejection device. When a large current flows through the fuse cabinet, the fuse When fusing, the firing pin in the fuse cabinet will pop up, thus triggering the operating mechanism in the fuse cabinet to open the load switch to protect the safety of the transmission line.
  • the Chinese utility model patent with authorization announcement number CN205542560U discloses a fuse trip mechanism of an integrated vacuum load switch-fuse combination electrical appliance.
  • the fuse trip mechanism includes a fuse, a striker top plate, an insulating tie rod, and a three-phase turn Arm, output arm, ejector bar and trip board.
  • the fuse striker in the fuse will pop out and press the striker top plate.
  • the striker top plate rotates downward and drives the insulation rod to move backward.
  • the insulated pull rod continues to drive the three-phase cantilever arm to swing, and the three-phase cantilever arm drives the output cantilever arm to swing, and the swinging output cantilever arm will pull the jack down, and the descending jack will pull the tripping plate, thereby realizing tripping.
  • the fuse tripping mechanism is realized by the fuse striker of the fuse pushing the striker top plate. Due to the limited impact force of the fuse striker, the striker top plate is likely to be moved back into place, so that the ejector pin cannot be realized. The downward traction of the cable makes it impossible to trip, leaving a safety hazard for the normal operation of the circuit.
  • the purpose of the present invention is to provide a fuse cabinet to solve the problem that the spring force inside the fuse in the prior art is limited, and the impact force of the striker sometimes cannot reliably trip the trip mechanism.
  • the technical solution of the fuse cabinet of the present invention is:
  • the fuse cabinet includes a cabinet body and a fuse provided in the cabinet body.
  • the fuse is provided with a fuse striker for driving the tripping mechanism.
  • the fuse striker drives the tripping mechanism through a force-increasing mechanism to perform a tripping action.
  • the force mechanism includes a reciprocating trip driving member.
  • the tripping driving member has a positive energy storage stroke and a reverse release stroke on its reciprocating stroke.
  • the force augmenting mechanism also includes a tripping drive member connected to trip
  • the driving member applies an energy storage elastic member forcing it to release the elastic force of the stroke, and the energy storage elastic member is driven by the trip driving member to deform and store energy when the trip driving member is on the energy storage stroke, and the energy storage of the trip driving member
  • There is an energy storage completion position on the itinerary and the force-increasing mechanism further includes a means for blocking the trip drive member in the energy storage completion position and triggered by the fuse striker to unlock the trip drive when the fuse blows Lock and unlock structure of the piece.
  • the firing pin is released when the fuse is blown to drive the booster mechanism. Since the driving force required to lock and unlock the structure is small, the booster mechanism is easier to move and through the booster.
  • the tripping drive of the mechanism drives the tripping mechanism to realize the opening, and the energy storage elastic piece effectively increases the driving force of the tripping drive, which makes the tripping drive drive foolproof and guarantees the fuse cabinet.
  • the tripping effect of the brake avoids the situation that the tripping cannot leave a safety hazard for the normal operation of the circuit, and improves the safety of equipment operation.
  • the locking and unlocking structure includes a stopper that can be reciprocally movably assembled in the cabinet, and the stopper has a stopper for engaging with the tripping drive on its movable stroke to stop it at all positions
  • the blocking position of the energy storage completion position the locking and unlocking structure further includes a movable locking limiter that is assembled in the cabinet body, and the locking limiter has a locking limiter for locking and blocking the stopper on its movable stroke
  • the locking position of the blocking position, the locking limit piece has a blocking piece unlocking stroke for blocking the blocking piece to trigger the action of the fuse striker to leave the locked position to unlock the blocking piece
  • the member has a driving member unlocking stroke for unlocking the tripping driving member when the locking limiter unlocks the stopper on its movable stroke.
  • the tripping drive member has an overlapping portion for stop-fitting with the stopper, and the stopper is reciprocally assembled around the corresponding stop hinge axis in the cabinet body, and the stopper It is provided with a reset elastic member for forcing the stopper to rotate towards the stop position.
  • the reciprocating stroke of the stopper includes the unlocking stroke of the driving member.
  • the unlocking stroke of the driving member is defined as a forward stroke.
  • the stopper is provided with a stopper side for cooperating with the lap portion to stop the stopper in the stop position to lock the tripping drive member, and has a stopper for the tripping drive member in the energy storage stroke
  • the overlapping part is pushed to drive the stopper to rotate on its reverse stroke, so that the overlapping part passes the pushing side of the stopping part, and the pushing side and the stopping side are in the block
  • the positive strokes of the stoppers are arranged opposite to each other.
  • the reciprocating movement of the stopper saves the running space of the stopper; when the lap portion goes over the pushing side, the stopper reversely rotates under the action of the reset elastic member, so that when the trip driver is unlocked and moves upward
  • the contact with the overlapping part realizes the blocking of the tripping drive.
  • the stopper has a stop end and a limit end that are relatively arranged on both sides of the stop hinge shaft, the stop end is provided with the pushing side and the stop side, the limit The end is used to stop and cooperate with the locking limiter in the locking position to lock the limiter to the stop position, and the stopper is also connected to the stopper for forcing the stopper to rotate
  • the preloading elastic member for pressing the limit end against the elastic force of the locking limiter, the direction of the rotational torque applied by the preloading elastic member on the stopper and the rotation of the reset elastic member on the stopper
  • the torque direction is opposite.
  • the preload elastic member and the reset elastic member can apply a rotating torque to the stopper from two opposite directions, so that the stopper can be smoothly returned to the position.
  • the locking limiter has a retaining half-shaft section, and the circumferential surface of the retaining half-shaft section has a stop-fitting engagement with the limit end of the stopper when the locking limiter is in the locked position.
  • the blocking area is separated from the blocking piece to unlock, and further has a blocking area for locking the limit piece on the blocking piece unlocking stroke and the blocking piece is on the driving piece unlocking stroke
  • the upper limit of the stopper cooperates with the stopper to prevent the stopper from rotating too much.
  • the structure of the locking limiter is relatively simple, which is convenient for driving the fuse striker.
  • the tripping drive member is assembled in the cabinet in a linear reciprocating motion
  • the energy storage elastic member is a compression spring sleeved on the tripping drive member.
  • the compression spring is a conventional elastic driving device, which is convenient for material retrieval and later maintenance.
  • the force-increasing mechanism further includes an energy storage force-applying member reciprocally assembled on the cabinet body or the cabinet door, and the energy storage force-applying member is rotatably equipped with an actuator for pushing the tripping
  • the pushing member acting on the energy storage stroke is provided with a pushing portion for blocking the pushing member, and the pushing member is connected to the pushing member to force it to the pushing portion
  • An action pushing elastic member the energy storage force applying member has a storage for pushing the pushing member through the pushing portion to drive the trip driving member to act on the energy storage stroke on its reciprocating stroke It can apply force
  • the tripping drive part is provided with an energy storage and pressing part for pushing the ejector.
  • the energy storage force is defined as a positive stroke, and a directed storage is connected to the energy storage force
  • the force-applying member can drive the reverse action to rotate the pushing member against the force of the pushing elastic member to pass the energy storage reset elastic member of the energy storage pressing portion.
  • the setting of the energy storage force-applying member facilitates the drive energy storage of the tripping drive member.
  • the energy storage force applying member is rotatably assembled on the cabinet body.
  • the drive of the energy storage force-applying member can be realized through the cabinet door.
  • the energy storage force applying member is V-shaped. Compared with the use of triangular plates, it saves more materials.
  • the force increasing mechanism includes a housing, and an energy storage force applying member, a trip driving member, an energy storage elastic member, and a lock-unlock structure are all disposed in the housing.
  • the arrangement of the shell realizes the integration and integration of the force-increasing mechanism.
  • FIG. 1 is a schematic structural view of a specific embodiment 1 of the fuse cabinet of the present invention.
  • FIG. 2 is a schematic structural view of the force-enhancing mechanism of the specific embodiment 1 of the present invention before energy storage;
  • FIG. 3 is a schematic structural diagram of the force-enhancing mechanism of the specific embodiment 1 of the fuse cabinet of the present invention after energy storage;
  • FIG. 4 is a schematic structural view of a force-boosting mechanism of a specific embodiment 2 of the present invention before energy storage;
  • FIG. 5 is a schematic structural diagram of the force-enhancing mechanism of the specific embodiment 2 of the fuse cabinet of the present invention after energy storage;
  • FIG. 6 is a schematic structural diagram of a force-boosting mechanism of a specific embodiment 3 of the present invention before energy storage;
  • the fuse cabinet includes a cabinet 101 in which a fuse 102 is provided, and a fuse 102 is provided on the fuse 102 for driving the trip mechanism 104 to operate
  • the fuse striker, the fuse striker drives the tripping mechanism 104 for tripping through the force-increasing mechanism 103, and the force-increasing mechanism 103 includes a tripping drive member 3.
  • the tripping drive member 3 is a jack, and the tripping drive
  • the piece 3 has a positive energy storage stroke and a reverse release stroke.
  • the stroke of the trip drive member 3 moving downward is the energy storage stroke
  • the stroke of the trip drive member 3 moving upward is the release stroke.
  • the force augmentation mechanism 103 further includes an energy storage elastic member 8 that provides elastic force to the trip driving member 3 to enable the trip driving member 3 to perform a release stroke action.
  • the trip driver 3 is provided with a blocking plate 9 for pushing one end of the compression spring.
  • the force-increasing mechanism 103 further includes a locking and unlocking structure.
  • the energy storage stroke of the tripping drive member 3 has an energy storage completion position. When the tripping drive member 3 travels to the energy storage completion position, the lock and unlocking structure can release the tripping drive member 3 The stop is at the energy storage completion position.
  • the fuse striker in the fuse 102 will trigger an action to unlock the lock-unlock structure, thereby canceling the stop restriction of the trip driver 3, so The trip driver 3 will then perform an upward release stroke under the action of the compression spring.
  • the locking and unlocking structure includes a blocking member 6 and a locking limiting member 7.
  • the blocking member 6 is a strip-shaped plate, and the blocking member 6 is assembled in the cabinet 101 through a hinge shaft to rotate.
  • the parts of the stopper 6 on both sides of the hinge shaft are called the stop end and the limit end, respectively.
  • the hinge shaft is set at the middle position of the stopper 6.
  • the stopper 6 has a stop position cooperating with the trip drive 3 on its movable stroke.
  • the stopper 6 also has a movable stop on its movable stroke.
  • the locking limiter 7 is also assembled in the cabinet through the rotation of the hinge shaft.
  • the locking limiter 7 has a locking position that locks the stopper 6 to the stop position on the movable stroke, and the locking limiter 7 is on the movable stroke There is also a stop unlocking stroke for unlocking the stop 6. After the fuse is blown, the locking limiter 7 will move along the stop stroke of the stopper under the action of the fuse striker, thereby unlocking the stopper 6, and the unlocked stopper 6 will move along the unlocking stroke of the drive To unlock the tripping drive 3.
  • the tripping drive member 3 is provided with a lap portion 5 that is stop-fitted with the blocking member 6.
  • the lap portion 5 is a lap plate
  • the blocking end of the blocking member 6 is blocked with the lap plate Limiting position
  • the blocking end is provided with a pushing side and a blocking side
  • the pushing side and the blocking side are opposite to each other
  • the blocking member 6 is also provided with a reset elastic member and a preload elastic member, a reset elastic member and a pre
  • the rotation torque that can be applied by the compression elastic member is opposite.
  • the reset elastic member and the pre-compressed elastic member are two torsion springs sleeved on the hinge shaft of the stopper 6, and the reset elastic member and the pre-compressed elastic member can The stopper 6 is reset, so that the stopper 6 can return to its original position by itself when it is not driven by the overlapping portion 5 and the locking limiter 7.
  • the locking limiter 7 has a retaining half-shaft section, and the circumferential surface of the retaining half-shaft section has a stop area for mutually blocking with the stopper 6 and a limit area for avoiding the stopper 6, this embodiment
  • the middle locking limiter 7 is a half-axis, and the hinge axis of the locking limiter 7 is set at the center of the outer plane of the half-axis.
  • the blocking area of the half-axis is the same as The stopper 6 contacts, so as to stop the stopper 6.
  • the limit area of the half-axis is facing the stopper 6, because the limit area and the stop There is a certain distance between the stop members 6 so as to avoid the stop member 6.
  • the force-increasing mechanism 103 further includes an energy storage force applying member 1 movably assembled on the cabinet 101.
  • the energy storage force applying member 1 is a V-shaped rod, and the energy storage force applying member 1 has a drive member for driving the tripping 3
  • the energy-storing force-applying stroke for the energy-storage movement.
  • the energy-storing force-applying member 1 is rotatably equipped with an ejector 2.
  • the thruster 2 is hinged through a hinge shaft.
  • the pushing parts of the pushing members 2 blocking each other.
  • the pushing part may be a baffle or a block.
  • the pushing member 2 is also provided with a pushing elastic member for driving the pushing member 2 to rotate toward the pushing portion.
  • the pushing elastic member is also a torsion spring sleeved on the hinge shaft of the pushing member 2 With the torsion force of the torsion spring, the pushing member 2 can always press against the pushing portion without being affected by external force.
  • the tripping drive member 3 is provided with an energy storage pressing portion 4 for pushing the pushing member 2.
  • the energy storage pressing portion 4 is an energy storage pressing plate.
  • the energy storage force applying member 1 is further provided with an energy storage reset elastic member for driving the reverse rotation.
  • the energy storage reset elastic member is an energy storage reset spring.
  • the energy storage force applying member 1 is V-shaped, the energy storage The position of the middle inflection point of the force-applying member 1 is also fixed in the cabinet by means of hinges, and the energy storage return spring is sleeved on the hinge axis of the energy-applying member 1.
  • the energy storage force-applying member 1 of this embodiment is rotatably assembled in the cabinet, and at the same time when the door is closed, the energy storage force-applying member 1 rotates due to the blocking of the cabinet door, thereby moving along the energy storage force-applying stroke.
  • the force increasing mechanism in this embodiment further includes a housing, and the energy storage force applying member 1, the trip driving member 3, the energy storage elastic member 8 and the locking and unlocking structure are all provided in the housing.
  • the cabinet door When the fuse cabinet of this embodiment is in use, when the cabinet door is closed, the cabinet door will push the energy storage force-applying member 1, and the energy storage force-applying member 1 will rotate around its hinge position, at this time, the ejector 2 Move toward the energy storage pressing part 4 on the tripping drive part 3 and push the energy storage pressing part 4 downwards, under the pushing action of the thrusting part 2, the tripping drive part 3 moves downward and compresses the energy storage
  • the elastic member 8 needs to be explained that, when the tripping drive member 3 descends to a certain position, the overlapping portion 5 will push the blocking side surface of the blocking member 6, and the blocking member 6 is pushed by the pressing portion 5 It will rotate around its hinge axis.
  • the fuse striker in the fuse 102 will push the locking limiter 7 to rotate through the transmission mechanism. Due to the loss of the blocking effect of the locking limiter 7, the trip driver 3 will drive the block The limit end of the stopper 6 rotates downward, and at the same time, the stopper end of the stopper 6 will rotate upward, and then the lap portion 5 will go over the stopper end of the stopper 6 and cause the tripping drive member 3 to hit the tripping mechanism upward Realize the opening of the load switch.
  • the energy storage force-applying member 1 will move in the opposite direction to the energy storage force-applying stroke under the action of the energy storage reset elastic member, when the pushing member 2 is in contact with the energy storage top pressing portion 4 , The energy storage pressing part 4 will block the ejector 2, at this time, the ejector 2 will rotate around its hinge position until the ejector 2 passes the energy storage ejector 4, and then the ejector 2 It will rebound to the position shown in Fig. 2 under the action of the pushing elastic member.
  • the specific embodiment 2 of the fuse cabinet of the present invention As shown in FIGS. 4 and 5, the blocking member 12 is reciprocatingly assembled in the cabinet to realize blocking or unlocking of the tripping drive member 3.
  • a wedge-shaped block 11 is provided on the side of the member 12 near the overlapping portion 5, the wedge-shaped block 11 has a guide surface, a compression spring 14 is sleeved on the stopper 12, and the stopper 12 is provided with a pressure spring 14 for blocking each other ⁇ ⁇ ⁇ ⁇ 13 ⁇ The stop ring protrusion 13.
  • the overlapping portion 5 When the trip driver 3 moves downwards, the overlapping portion 5 will push the wedge block 11 and the guide surface will convert the downward force of the overlapping portion 5 into the axial force of the stopper 12 to make the stopper 12 Move to the left, so that the overlapping portion 5 passes over the stopper 12, and when the overlapping portion 5 passes over the stopper 12, the stopper 12 is pushed out again under the cooperation of the compression spring 14 and the annular protrusion 13, thereby The lap portion 5 is blocked.
  • the specific embodiment 3 of the fuse cabinet of the present invention As shown in FIG. 6, one end of the stopper 22 is hinged, and the end of the stopper 22 away from the hinged end is a stopper end that cooperates with the overlapping portion 5 to stop
  • the member 22 is provided with a locking limiter 21 between the blocking end and the hinged end.
  • the hinge axis of the blocking member 22 is provided with a torsion spring that drives the blocking member 22 to move toward the locking limiter.
  • the trip driver 3 moves downward, the overlapping portion 5 will push the stopper end to rotate the stopper 22 around the hinge axis.
  • the stopper 22 When the stopper 22 rotates to a certain position, the overlapping portion 5 will engage the stopper The stop end of the stopper 22 is separated, so that the overlapping portion 5 descends below the stopper 22. At this time, the stopper 22 returns to the horizontal position under the action of the torsion spring, forming a stop for the overlapping portion 5 stop.
  • the striker in the fuse When the fuse in the fuse is blown, the striker in the fuse will hit the locking limiter 21, and the locking limiter 21 rotates clockwise to release the limit to the stopper 22, and the stopper 22 continues to twist
  • the spring rotates to avoid the overlapping portion 5, and then the overlapping portion 5 will pass over the stop end of the stopper 22 and cause the tripping drive member 3 to hit the load switch upward to realize the opening.
  • the lock-unlock structure may be an existing electromagnetic mechanism or motor drive mechanism.
  • the locking limiter can rotate counterclockwise to complete the stop of the stopper.
  • the locking limiter may be a bar beam with curved ends.
  • the tripping drive member may be in a rotating form, one end of the tripping drive member and the stopper block each other, and the energy storage spring is replaced by a tension spring or a compression spring fixedly connected to the tripping drive end at one end.
  • the energy storage force-applying member is not provided, and the tripping drive member is manually operated to the energy storage completion position.
  • the energy storage force-applying member has a direct-acting structure and is L-shaped.
  • the components of the booster mechanism are directly assembled in the cabinet.

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Abstract

一种熔断器柜，熔断器柜包括柜体（101）和设置在柜体（101）内的熔断器（102），熔断器（102）上设有用于驱动脱扣机构（104）动作的熔断器（102）撞针，所述熔断器（102）撞针通过增力机构（103）驱动脱扣机构（104）进行脱扣动作，增力机构（103）包括脱扣驱动件（3），脱扣驱动件（3）具有储能行程和释放行程，增力机构（103）还包括与脱扣驱动件（3）连接以向脱扣驱动件（3）施加迫使其向释放行程动作的弹性力的储能弹性件（8），脱扣驱动件（3）的储能行程上具有储能完成位，所述增力机构（103）还包括用于将脱扣驱动件（3）挡止在所述储能完成位并在熔断器（102）熔断时解锁所述脱扣驱动件（3）的锁定解锁结构。该方案通过增设增力机构（103），有效的增加了脱扣驱动件（3）的驱动力，保证了熔断器柜的分闸脱扣效果，提高了设备运行的安全性。

Description

一种熔断器柜 技术领域
本发明涉及一种熔断器柜。
背景技术
电力输电系统中，熔断器柜作为一种重要的过流保护装置被应用于各种电器设备中，熔断器柜中设置有过流弹射装置，当熔断器柜中流过较大电流而将熔丝熔断时，熔断器柜中的撞针会弹出，从而触发熔断器柜中的操动机构将负荷开关分闸，以起到保护输电线路安全的目的。
授权公告号为CN205542560U的中国实用新型专利公开了一种一体化真空负荷开关-熔断器组合电器的熔断器脱扣机构，该熔断器脱扣机构包括熔断器、撞针顶板、绝缘拉杆、三相拐臂、输出拐臂、顶杆以及脱扣板，熔断器中的熔丝熔断时，熔断器中的熔丝撞针会弹出并顶压撞针顶板，撞针顶板向下转动并带动绝缘拉杆向后移动，绝缘拉杆继续带动三相拐臂摆动，三相拐臂带动输出拐臂摆动，摆动的输出拐臂会向下牵引顶杆，下行的顶杆会拉动脱扣板，从而实现脱扣。但是该熔断器脱扣机构是通过熔断器的熔丝撞针顶推撞针顶板实现的脱扣，由于熔丝撞针的撞击力有限，撞针顶板容易产生后移不到位的情况，从而无法实现对顶杆的向下牵引，导致无法脱扣，给电路的正常运行留下安全隐患。
发明内容
本发明的目的在于提供一种熔断器柜，以解决现有技术中熔断器内部的弹簧力有限，进而造成撞针的撞击力有时候不能可靠的使脱扣机构脱扣的问题。
为实现上述目的，本发明熔断器柜的技术方案是：
熔断器柜包括柜体和设置在柜体内的熔断器，熔断器上设有用于驱动脱扣机构动作的熔断器撞针，所述熔断器撞针通过增力机构驱动脱扣机构进行脱扣动作，增力机构包括往复活动的脱扣驱动件，脱扣驱动件在其往复活动行程上具有正向的储能行程和反向的释放行程，增力机构还包括与脱扣驱动件连接以向脱扣驱动件施加迫使其向释放行程动作的弹性力的储能弹性件，储能弹性件在脱扣驱动件处于储能行程上时由脱扣驱动件驱动变形储能，脱扣驱动件的储能行程上具有储能完成位，所述增力机构还包括用于将脱扣驱动件挡止在所述储能完成位并在熔断器熔断时由熔断器撞针触发动作以解锁所述脱扣驱动件的锁定解锁结构。
有益效果：通过在熔断器柜内设置增力机构，使熔断器熔断时释放撞针驱动增力机构动作，由于锁定解锁结构需要的驱动力较小，因此增力机构较为容易动作，并通过增力机构的脱扣驱动件驱动脱扣机构动作实现分闸，储能弹性件有效的增加了脱扣驱动件的驱动力，使得脱扣驱动件的驱动能够做到万无一失，保证了熔断器柜的分闸脱扣效果，避免了无法脱扣给电路的正常运行留下安全隐患的情况，提高了设备运行的安全性。
进一步地，所述锁定解锁结构包括可往复的活动装配在所述柜体内的挡止件，挡止件在其活动行程上具有用于与脱扣驱动件挡止配合以将其挡止在所述储能完成位的挡止位，锁定解锁结构还包括可活动的装配在所述柜体内的锁定限位件，锁定限位件在其活动行程上具有用于将挡止件锁定限位在所述挡止位的锁定位，锁定限位件在其活动行程上具有用于由所述熔断器撞针触发动作离开所述锁定位以解锁所述挡止件的挡止件解锁行程，挡止件在其活动行程上具有用于在锁定限位件解锁所述挡止件时解锁所述脱扣驱动件的驱动件解锁行程。采用这样的结构设计，使得熔丝撞针通过撞击体量较小的锁定限位件即可实现对脱扣驱动件的驱动。
进一步地，所述脱扣驱动件具有用于与所述挡止件挡止配合的搭接部，挡止件绕相应挡止铰接轴可往复的转动装配在所述柜体内，挡止件上设有用于向挡止件施加迫使其向所述挡止位转动的复位弹性件，挡止件的往复活动行程包括所述的驱动件解锁行程，将驱动件解锁行程定义为正向行程，挡止件上设有用于与搭接部挡止配合以使处于挡止位的挡止件挡止锁定所述脱扣驱动件的挡止侧面，还具有用于当脱扣驱动件在储能行程上移动时供搭接部顶推以驱动挡止件在其反向行程上转动进而使搭接部越过所述挡止件的顶推侧面，顶推侧面与所述挡止侧面在所述挡止件的正向行程上相背布置。挡止件的往复运动，节省了挡止件的运行空间；当搭接部越过顶推侧面后，挡止件在复位弹性件的作用下反向转动，从而在脱扣驱动件解锁上行时能够与搭接部接触，实现对脱扣驱动件的挡止。
进一步地，所述挡止件具有相对布置在所述挡止铰接轴两侧的挡止端和限位端，所述挡止端设有所述顶推侧面和挡止侧面，所述限位端用于与处于所述锁定位的锁定限位件挡止配合进而将挡止件锁定限位在所述挡止位，挡止件上还连接有用于向挡止件施加迫使挡止件转动以使所述限位端压向所述锁定限位件的弹性力的预压弹性件，预压弹性件施加在挡止件上的转动力矩方向与复位弹性件施加在挡止件上的转动力矩方向相反。预压弹性件和复位弹性件能够从相对的两个方向对挡止件施加转动力矩，从而使得挡止件能够顺利回复到位。
进一步地，所述锁定限位件具有保持半轴段，保持半轴段的周面具有用于在锁定限位 件处于锁定位时与所述挡止件的限位端挡止配合、在锁定限位件处于挡止件解锁行程上时与所述挡止件脱离解锁的挡止区域，还具有用于在锁定限位件处于挡止件解锁行程上且所述挡止件处于驱动件解锁行程上时与所述挡止件挡止配合以防止挡止件过转动的限位区域。使得锁定限位件的结构较为简单，方便熔丝撞针的驱动。
进一步地，所述脱扣驱动件直动的往复活动装配在所述柜体内，所述储能弹性件为套设在脱扣驱动件上的压簧。压簧为常规弹性驱动装置，方便了取材和后期维修。
进一步地，所述增力机构还包括往复的活动装配在柜体上或柜门上的储能施力件，储能施力件上可转动的装配有用于顶推所述脱扣驱动件在储能行程上动作的顶推件，储能施力件上设有用于挡止所述顶推件的顶推部，顶推件上连接有向顶推件施加迫使其向所述顶推部动作的顶推弹性件，储能施力件在其往复活动行程上具有用于通过所述顶推部顶推所述顶推件以驱动所述脱扣驱动件在储能行程上动作的储能施力行程，脱扣驱动件上设有用于供所述顶推件顶推的储能顶压部，将储能施力行程定义为正向行程，储能施力件上连接有向储能施力件施加驱使其反向动作以使顶推件克服所述顶推弹性件作用力转动以越过所述储能顶压部的储能复位弹性件。储能施力件的设置方便了对脱扣驱动件的驱动储能。
进一步地，所述储能施力件可转动的装配在柜体上。通过柜门即可实现对储能施力件的驱动。
进一步地，所述储能施力件为V形。相比于采用三角板的方式比较节省材料。
进一步地，所述增力机构包括壳体，储能施力件、脱扣驱动件、储能弹性件以及锁定解锁结构均设置在所述壳体中。壳体的设置实现了增力机构的集成化和整体化。
附图说明
图1为本发明的熔断器柜的具体实施例1的结构示意图；
图2为本发明的熔断器柜的具体实施例1的增力机构储能前的结构示意图；
图3为本发明的熔断器柜的具体实施例1的增力机构储能后的结构示意图；
图4为本发明的熔断器柜的具体实施例2的增力机构储能前的结构示意图；
图5为本发明的熔断器柜的具体实施例2的增力机构储能后的结构示意图；
图6为本发明的熔断器柜的具体实施例3的增力机构储能前的结构示意图；
附图标记说明：1-储能施力件；2-顶推件；3-脱扣驱动件；4-储能顶压部；5-搭接部；6-挡止件；7-锁定限位件；8-储能弹性件；9-挡止板；11-楔形块；12-挡止件；13-环形凸起；14-压簧；15-锁定限位件；21-锁定限位件；22-挡止件；101-柜体；102-熔断器；103-增力机构；104-脱扣机构。
具体实施方式
下面结合附图对本发明的实施方式作进一步说明。
本发明的熔断器柜的具体实施例1，如图1所示，熔断器柜包括柜体101，柜体101内设置有熔断器102，熔断器102上设置有用于驱动脱扣机构104动作的熔断器撞针，熔断器撞针通过增力机构103驱动脱扣机构104进行脱扣，增力机构103包括脱扣驱动件3，本实施例中，脱扣驱动件3即为顶杆，脱扣驱动件3具有正向的储能行程和反向的释放行程，脱扣驱动件3向下运动的行程即为储能行程，脱扣驱动件3向上运动的行程即为释放行程。如图2所示，增力机构103还包括向脱扣驱动件3提供弹性力以使脱扣驱动件3能够进行释放行程动作的储能弹性件8，本实施例中，储能弹性件8为压簧，脱扣驱动件3上设置有用于顶推压簧一端的挡止板9，当脱扣驱动件3向下进行储能运动时，脱扣驱动件3上的挡止板9会向下顶推压簧，从而实现压簧的储能。增力机构103还包括锁定解锁结构，脱扣驱动件3的储能行程上具有储能完成位，当脱扣驱动件3行至储能完成位后，锁定解锁结构能够将脱扣驱动件3挡止在储能完成位，当熔断器102的熔丝熔断后，熔断器102中的熔断器撞针会触发动作以对锁定解锁结构解锁，从而取消对脱扣驱动件3的挡止限制，这样脱扣驱动件3即会在压簧的作用下进行向上的释放行程。
锁定解锁结构包括挡止件6和锁定限位件7，本实施例中挡止件6为条形板，挡止件6通过铰接轴转动装配在柜体101内，为方便描述，以下将挡止件6的位于铰接轴两侧的部分分别称为挡止端和限位端。本实施例中铰接轴设置在挡止件6的中间位置，挡止件6在其活动行程上具有与脱扣驱动件3挡止配合的挡止位，挡止件6在其活动行程上还具有用于解锁脱扣驱动件3的驱动件解锁行程。锁定限位件7也通过铰接轴转动装配在柜体内，锁定限位件7在活动行程上具有将挡止件6锁定限位在挡止位的锁定位，锁定限位件7在其活动行程上还具有用于解锁挡止件6的挡止件解锁行程。熔丝熔断后，锁定限位件7在熔断器撞针的作用下会沿着挡止件解锁行程运动，从而将挡止件6解锁，解锁后的挡止件6会沿着驱动件解锁行程运动，从而将脱扣驱动件3进行解锁。
脱扣驱动件3上设置有与挡止件6挡止配合的搭接部5，本实施例中，搭接部5为搭接板，挡止件6的挡止端与搭接板挡止限位，挡止端上设置有顶推侧面和挡止侧面，顶推侧面和挡止侧面相背设置，挡止件6上还设置有复位弹性件和预压弹性件，复位弹性件和预压弹性件所能够施加的转动力矩相反，本实施例中复位弹性件和预压弹性件为套设在挡止件6的铰接轴上的两个扭簧，复位弹性件和预压弹性件能够将挡止件6进行复位，从而使得挡止件6在不受搭接部5和锁定限位件7的驱动时能够自行恢复至原始位置。
锁定限位件7具有保持半轴段，保持半轴段的周面具有用于与挡止件6相互挡止的挡止区域，还具有用于避让挡止件6的限位区域，本实施例中锁定限位件7为半轴，锁定限位件7的铰接轴设置在半轴的外侧平面中心，当半轴的平面旋转至与挡止件6垂直时，半轴的挡止区域即与挡止件6接触，从而对挡止件6进行挡止，当半轴的平面旋转至与挡止件6平行时，半轴的限位区域即朝向挡止件6，由于限位区域与挡止件6之间间隔了一定距离，从而实现了对挡止件6的避让。
增力机构103还包括活动装配在柜体101上的储能施力件1，本实施例中储能施力件1为V形杆，储能施力件1具有用于驱动脱扣驱动件3进行储能运动的储能施力行程，储能施力件1上可转动的装配有顶推件2，顶推件2通过铰接轴实现铰接，储能施力件1上设置有用于与顶推件2相互挡止的顶推部，顶推部可以为一块挡板或挡块。顶推件2上还设置有用于驱动顶推件2朝向顶推部进行旋转的顶推弹性件，本实施例中顶推弹性件也为套设在顶推件2的铰接轴上的扭簧，借助扭簧的扭力作用使得顶推件2在不受外力的作用下能够始终顶压在顶推部上。脱扣驱动件3上设置有供顶推件2顶推的储能顶压部4，本实施例中储能顶压部4为储能顶压板。储能施力件1上还设置有用于驱动其反向转动的储能复位弹性件，本实施例中储能复位弹性件为储能复位弹簧，由于储能施力件1为V形，储能施力件1的中间拐点位置也通过铰接的方式固定柜体内，储能复位弹簧套设在储能施力件1的铰接轴上。本实施例的储能施力件1可转动的装配在柜体内，关门的同时，储能施力件1由于柜门的阻挡而转动，从而沿着储能施力行程运动。
需要补充说明的是，本实施例中的增力机构还包括壳体，储能施力件1、脱扣驱动件3、储能弹性件8以及锁定解锁结构均设置在壳体中。
本实施例的熔断器柜在使用时，在关闭柜门的同时，柜门会顶推储能施力件1，储能施力件1会绕着其铰接位置旋转，此时顶推件2朝向脱扣驱动件3上的储能顶压部4运动并向下顶推储能顶压部4，在顶推件2的顶推作用下，脱扣驱动件3向下运动并压缩储能弹性件8，需要说明的是，当脱扣驱动件3下行至一定位置后，搭接部5会顶推挡止件6的挡止侧面，由于搭接部5的顶压，挡止件6会绕着其铰接轴旋转，当挡止件6旋转至一定位置后，搭接部5会与挡止件6分离，从而使得搭接部5下行至挡止件6的下方，此时挡止件6在复位弹性件和预压弹性件的作用下回复至水平位置，而脱扣驱动件3继续下行，直至顶推件2与储能顶压部4分离，此时由于脱扣驱动件3失去上方的顶压作用，脱扣驱动件3会在储能弹性件8的作用下上行，当搭接部5与挡止件6的顶推侧面接触时，由于挡止件6的限位端与锁定限位件7存在挡止，搭接部5会被挡止件6挡止在储能完成位的 挡止位，即完成储能过程，具体情况如图3所示。
当熔断器102的熔丝熔断后，熔断器102中的熔断器撞针会通过传动机构推动锁定限位件7旋转，由于失去锁定限位件7的挡止作用，脱扣驱动件3会驱动挡止件6的限位端向下旋转，同时挡止件6的挡止端会向上旋转，然后搭接部5会越过挡止件6的挡止端使脱扣驱动件3向上撞击脱扣机构实现负荷开关的分闸。
工作人员打开柜门后，储能施力件1会在储能复位弹性件的作用下沿着与储能施力行程相反的方向运动，当顶推件2与储能顶压部4接触时，储能顶压部4会对顶推件2造成挡止，此时，顶推件2会绕着其铰接位置发生旋转直至顶推件2越过储能顶压部4，然后顶推件2会在顶推弹性件的作用下回弹至图2所示位置。
本发明的熔断器柜的具体实施例2：如图4和图5所示，挡止件12直动的往复活动装配在柜体内以实现对脱扣驱动件3的挡止或解锁，挡止件12靠近搭接部5的一侧设置有楔形块11，楔形块11上具有引导面，挡止件12上套设有压簧14，挡止件12上设置有用于与压簧14相互挡止的环形凸起13。当脱扣驱动件3向下运动时，搭接部5会顶推楔形块11，引导面会将搭接部5的向下作用力转换为挡止件12的轴向作用力使挡止件12向左移动，从而使搭接部5越过挡止件12，当搭接部5越过挡止件12后，挡止件12在压簧14和环形凸起13的配合作用下被重新推出，从而对搭接部5形成挡止。当熔断器中的熔丝熔断后，熔断器中的撞针会撞向锁定限位件15，锁定限位件15会产生逆时针旋转并推动环形凸起13，从而推动挡止件12远离脱扣驱动件3，此时，挡止件12解除对脱扣驱动件3的挡止。
本发明的熔断器柜的具体实施例3：如图6所示，挡止件22的一端铰接，挡止件22远离铰接端的一端为与搭接部5挡止配合的挡止端，挡止件22于挡止端与铰接端之间设有锁定限位件21，挡止件22的铰接轴上设有驱使挡止件22向锁定限位件运动的扭簧。当脱扣驱动件3向下运动时，搭接部5会顶推挡止端使挡止件22绕着铰接轴转动，当挡止件22旋转至一定位置后，搭接部5会与挡止件22的挡止端分离，从而使搭接部5下行至挡止件22的下方，此时，挡止件22在扭簧的作用下复位至水平位置，形成对搭接部5的挡止。当熔断器中的熔丝熔断后，熔断器中的撞针会撞向锁定限位件21，锁定限位件21顺时针旋转以解除对挡止件22的限位，挡止件22继续在扭簧的作用下转动以避让搭接部5，然后搭接部5会越过挡止件22的挡止端使脱扣驱动件3向上撞击负荷开关实现分闸。
在其他实施例中，锁定解锁结构可以为现有的电磁机构或电机驱动机构。在其他实施例中，锁定限位件可以进行逆时针旋转以完成对挡止件的挡止。在其他实施例中，锁定限 位件可以为端部带有弧面的条形梁。在其他实施例中，脱扣驱动件可以为转动形式，脱扣驱动件的一端与挡止件相互挡止，储能弹簧则替换为一端与脱扣驱动件固定连接的拉簧或压簧。在其他实施例中，不设置储能施力件，通过手动操作脱扣驱动件到储能完成位。在其他实施例中，储能施力件为直动结构，且为L型。在其他实施例中，增力机构的各部件直接装配在柜体内。

Claims (10)

  1. 熔断器柜，包括柜体，柜体内设有负荷开关、熔断器及相应的脱扣机构，熔断器上设有用于驱动脱扣机构动作的熔断器撞针，其特征在于：所述熔断器撞针通过增力机构驱动脱扣机构进行脱扣动作，增力机构包括往复活动的脱扣驱动件，脱扣驱动件在其往复活动行程上具有正向的储能行程和反向的释放行程，增力机构还包括与脱扣驱动件连接以向脱扣驱动件施加迫使其向释放行程动作的弹性力的储能弹性件，储能弹性件在脱扣驱动件处于储能行程上时由脱扣驱动件驱动变形储能，脱扣驱动件的储能行程上具有储能完成位，所述增力机构还包括用于将脱扣驱动件挡止在所述储能完成位并在熔断器熔断时由熔断器撞针触发动作以解锁所述脱扣驱动件的锁定解锁结构。
  2. 根据权利要求1所述的熔断器柜，其特征在于：所述锁定解锁结构包括可往复的活动装配在所述柜体内的挡止件，挡止件在其活动行程上具有用于与脱扣驱动件挡止配合以将其挡止在所述储能完成位的挡止位，锁定解锁结构还包括可活动的装配在所述柜体内的锁定限位件，锁定限位件在其活动行程上具有用于将挡止件锁定限位在所述挡止位的锁定位，锁定限位件在其活动行程上具有用于由所述熔断器撞针触发动作离开所述锁定位以解锁所述挡止件的挡止件解锁行程，挡止件在其活动行程上具有用于在锁定限位件解锁所述挡止件时解锁所述脱扣驱动件的驱动件解锁行程。
  3. 根据权利要求2所述的熔断器柜，其特征在于：所述脱扣驱动件具有用于与所述挡止件挡止配合的搭接部，挡止件绕相应挡止铰接轴可往复的转动装配在所述柜体内，挡止件上设有用于向挡止件施加迫使其向所述挡止位转动的复位弹性件，挡止件的往复活动行程包括所述的驱动件解锁行程，将驱动件解锁行程定义为正向行程，挡止件上设有用于与搭接部挡止配合以使处于挡止位的挡止件挡止锁定所述脱扣驱动件的挡止侧面，还具有用于当脱扣驱动件在储能行程上移动时供搭接部顶推以驱动挡止件在其反向行程上转动进而使搭接部越过所述挡止件的顶推侧面，顶推侧面与所述挡止侧面在所述挡止件的正向行程上相背布置。
  4. 根据权利要求3所述的熔断器柜，其特征在于：所述挡止件具有相对布置在所述挡止铰接轴两侧的挡止端和限位端，所述挡止端设有所述顶推侧面和挡止侧面，所述限位端用于与处于所述锁定位的锁定限位件挡止配合进而将挡止件锁定限位在所述挡止位，挡止件上还连接有用于向挡止件施加迫使挡止件转动以使所述限位端压向所述锁定限位件的弹性力的预压弹性件，预压弹性件施加在挡止件上的转动力矩方向与复位弹性 件施加在挡止件上的转动力矩方向相反。
  5. 根据权利要求3所述的熔断器柜，其特征在于：所述锁定限位件具有保持半轴段，保持半轴段的周面具有用于在锁定限位件处于锁定位时与所述挡止件的限位端挡止配合、在锁定限位件处于挡止件解锁行程上时与所述挡止件脱离解锁的挡止区域，还具有用于在锁定限位件处于挡止件解锁行程上且所述挡止件处于驱动件解锁行程上时与所述挡止件挡止配合以防止挡止件过转动的限位区域。
  6. 根据权利要求1-5中任一项所述的熔断器柜，其特征在于：所述脱扣驱动件直动的往复活动装配在所述柜体内，所述储能弹性件为套设在脱扣驱动件上的压簧。
  7. 根据权利要求1-5中任一项所述的熔断器柜，其特征在于：所述增力机构还包括往复的活动装配在柜体上或柜门上的储能施力件，储能施力件上可转动的装配有用于顶推所述脱扣驱动件在储能行程上动作的顶推件，储能施力件上设有用于挡止所述顶推件的顶推部，顶推件上连接有向顶推件施加迫使其向所述顶推部动作的顶推弹性件，储能施力件在其往复活动行程上具有用于通过所述顶推部顶推所述顶推件以驱动所述脱扣驱动件在储能行程上动作的储能施力行程，脱扣驱动件上设有用于供所述顶推件顶推的储能顶压部，将储能施力行程定义为正向行程，储能施力件上连接有向储能施力件施加驱使其反向动作以使顶推件克服所述顶推弹性件作用力转动以越过所述储能顶压部的储能复位弹性件。
  8. 根据权利要求7所述的熔断器柜，其特征在于：所述储能施力件可转动的装配在柜体上。
  9. 根据权利要求8所述的熔断器柜，其特征在于：所述储能施力件为V形。
  10. 根据权利要求7所述的熔断器柜，其特征在于：所述增力机构包括壳体，所述储能施力件、脱扣驱动件、储能弹性件以及锁定解锁结构均设置在所述壳体中。
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