WO2016041520A1

WO2016041520A1 - Operating mechanism and locking device thereof

Info

Publication number: WO2016041520A1
Application number: PCT/CN2015/089939
Authority: WO
Inventors: 刘宇; 王守山; 付亚旭; 姚永其; 杨珂; 张敬涛; 王振; 仝永刚; 邹高鹏; 宋超; 赵晓民; 王鹏超
Original assignee: 国家电网公司; 平高集团有限公司
Priority date: 2014-09-18
Filing date: 2015-09-18
Publication date: 2016-03-24
Also published as: CN104319130A; CN104319130B

Abstract

An operating mechanism and a locking device thereof. A rigid locking piece of the locking device is movably assembled on a tripping bracket, and used for stopping and avoiding in a swinging direction in an unlocking position of a plunger latch swinging arm when the plunger latch swinging arm is in a locking position; a disconnection prevention structure used for preventing the locking piece from being disconnected from the plunger latch swinging arm when the locking piece stops the plunger latch swinging arm is arranged on the tripping bracket; and a force application structure used for switching stopping and avoiding of the locking piece to the plunger latch swinging arm is arranged on the locking piece. When a plunger latch is in a locking position, limiting and avoiding to the plunger latch swinging arm can be achieved by the stopping and the avoiding of the locking piece to the plunger latch swinging arm, and an assurance effect before swinging of the plunger latch swinging arm is exerted, so that a mistaken touch prevention function of a tripping device during use is added, the idling safety of the tripping device is ensured, and a locking function is exerted to keeping of opening and closing motion of the whole operating mechanism.

Description

Operating mechanism and its locking device

Technical field

The invention relates to an operating mechanism and a locking device therefor.

Background technique

At present, the closing device of the common circuit breaker is mainly composed of a closing tripping tweezers, a closing latch and a closing electromagnet, and the latching arm of the closing latch passes the top of the closing electromagnet. Pushing and rotating on the frame to achieve the limit of closing the tripping tweezers in the state of energy storage, and releasing the limit of closing the tripping tweezers in the closed state. The existing closing trip device can be divided into two types by different structures of the closing latch, such as the closing brake module disclosed in the Chinese patent document 201220001606.3, the new spring operating mechanism, and the other such as Chinese patent document 201220735252.5, the opening and closing device disclosed in the spring operating mechanism. In the former closing trip device, the closing latch is a rotating latch that is mounted on the frame, and the latch arm of one end of the latch is matched with the roller on the closing tripper, and the other end is combined. The tripping member attached to the brake electromagnet is matched. In the latter closing trip device, the closing latch is a closing half shaft that is rotatably mounted on the frame, and one end of the closing half shaft is provided with a half shaft structure matched with the closing tripping tweezers, and the other end is provided There is a closing latch swing arm that cooperates with a fixed V-shaped arm and a closing electromagnet on the manually operated shaft.

In order to ensure that the circuit breaker can be reliably locked in the opening position, an isolated circuit breaker is required to replace the existing common circuit breaker in the high voltage line, and the difference between the contact system of the isolated circuit breaker and the ordinary circuit breaker is mainly: The isolated circuit breaker needs to be equipped with a mechanical isolation locking device to ensure the correct locking and closing action and mechanical locking function. The locking function of the existing isolated circuit breaker is to realize the locking in the transmission system of the circuit breaker, and has no connection with the operating mechanism; if the locking device is used to lock a certain part of the isolating circuit breaker body, although the body driving lock is realized Buckle, but the closing latch of the mechanism is not limited. After the button of the closing electromagnet is subjected to abnormal impact, vibration or accidental touch, the closing latch will still release the latch from the opening and closing. The direction rotates, causing the closing of the closing. The energy storage wheel is slightly rotated by a certain angle with the output cam. At this time, since the locking body of the isolation circuit breaker is locked, the isolation circuit breaker is not immediately performed. Closing, but the closing tripping tweezers of the spring operating mechanism have been tripped, and the gap size of the output cam has been destroyed. Once the blocking function of the locking device in the circuit breaker body is released, the isolated circuit breaker will immediately and suddenly close. The action, so that the closing action of the isolated circuit breaker is too fast, the closing characteristics can not meet the technical requirements, so that the closing action of the isolated circuit breaker is more Security risks.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a locking device for preventing rotation of a latch in a direction to release a tripping tweezers while avoiding an electromagnet or a manually operated shaft of the trip device being erroneously operated, and also providing an operation using the latching device Moving agencies.

In order to achieve the above object, the technical solution of the trip device in the present invention is as follows:

The latching device comprises a rigid latching member for movably mounting on the trip bracket for blocking and avoiding in the direction in which the latch swing arm unlocking position is swung when the latch swing arm is in the lock position, on the latching member A force applying structure for switching the blocking and escaping of the latching arm to the latching arm is provided.

The latching member is a latching pin for movably guiding the mounting on the trip bracket in the direction of the rotational axis of the latch, and the biasing structure is a thrusting structure for axially withdrawing along the latching pin shaft.

The thrusting structure includes a force swinging arm for rotating and mounting on the trip bracket and a connecting rod bridging between the force swinging arm and the latching pin, the force swinging arm having a spatially perpendicular arrangement with the axis of rotation of the latch The axis of rotation, the force swing arm, the connecting rod and the latching pin form a crank slider mechanism on the trip bracket.

The urging arm is fixed on the outer circumference of the urging shaft, and is provided at the periphery of the urging arm for preventing the urging arm from continuing to push and lock after the latching pin is pushed to the position of the latching arm. A latching stop that swings in the direction of the pin.

The locking limiter is a travel switch spaced apart from the periphery of the force swing arm, and a control cam matched with the lock stroke switch is fixed on the force applying shaft, and the control cam is spaced apart from the force swing arm and is disposed on the lock limiter. A force-applying motor for closing when the control cam touches the latching limiter is electrically connected to the control device, and the output end of the force-applying motor is connected to the force-applying shaft.

The technical scheme of the operating mechanism in the utility model is as follows:

The operating mechanism comprises a frame and a tweezers and a tripping device assembled thereon, and the tripping device comprises a tripping bracket fixed or integrally arranged on the frame, and the tripping bracket is mounted on the parallel axis and is equipped with a tweezers And a latch for releasing the limit of the latch under the action of the operating rod or the electromagnet, the latch is fixedly or integrally provided with a radially overhanging latch arm along the axis of rotation, the latch arm The limit positions on the two sides of the swinging stroke on the trip bracket are respectively corresponding to the locking position when the latch is pressed against the latch to limit the latch to the latch, and is used for the latch to be actuated. The lever or the electromagnet is pushed up to release the unlocking position of the limit of the latch, and the trip bracket is further equipped with a locking device, and the locking device comprises a movable assembly on the trip bracket for locking the arm in the latching position The rigid latching member can be blocked and evaded in the direction in which the latching arm unlocking position is swung, and is provided on the trip bracket for preventing the latching member from swinging from the latching arm when the latching member blocks the latching arm The upper release structure is provided on the lock member for switching the lock member to the latch swing arm Urging the stopper and the relief structure.

The latching member is movably guided to the latching pin shaft mounted on the trip bracket in the direction of the rotation axis of the latch, and the retaining structure comprises a support wall fixedly or integrally provided on the trip bracket, and the support wall is provided with a latching pin on the support wall When the latching arm is blocked, the supporting surface on the side of the latching pin that faces away from the latching arm is blocked; the force applying structure is a thrusting structure for axially withdrawing along the latching pin.

The thrusting structure includes a urging arm mounted on the trip bracket and bridged between the force swing arm and the latch pin The connecting rod, the rotating axis of the force swinging arm and the rotating axis of the latch are vertically arranged in a staggered manner, and the force swinging arm, the connecting rod and the locking pin form a crank slider mechanism on the trip bracket.

The urging arm is fixed on the outer circumference of the urging shaft, and is provided at the periphery of the urging arm for preventing the urging arm from continuing to push and lock after the latching pin is pushed to the position of the latching arm. A locking limiter that swings in the direction of the pin, and the latching limiter is fixed on the trip bracket.

The trip bracket of the trip device of the present invention is movably fitted with a rigid latching member for blocking and avoiding in the direction in which the latch swing arm is in the locked position when the latch swing arm is in the lock position, and is off The buckle bracket is provided with a stop structure for preventing the latching member from being disengaged from the latch swing arm when the latch member blocks the latch swing arm, and the latching member is provided with a stop member for switching the latching member to the latch swing arm And the evasive force structure. In use, when the latch is in the locking position, the locking member can move to a position that blocks the latch swing arm to block the latch from moving toward the unlocking position, and the stop structure ensures that the latch is stable and reliable to the latch. The rigid stop, so that when the electromagnet or the operating lever of the operating mechanism is accidentally touched, the latch swing arm is blocked by the latching member without rotating the latch, thereby avoiding the latch being released when the latch is accidentally touched. In the case of a limit position; when the lock member needs to be rotated to the unlocking position, the lock member can be moved to avoid the position of the swing arm, and the limit of the lock arm to the lock arm can be released, so that the lock arm can be Rotate to the unlocking position to facilitate the normal operation of the operating mechanism. Therefore, in the lock position of the utility model, the latching arm can be blocked and avoided by the latching member to realize the limit and avoidance of the latch swing arm, and the swing arm swings at the latch. The front insurance function increases the anti-missing function of the trip device during use, ensures the idle safety of the trip device, and also plays a locking function for the maintenance of the split and closing actions of the entire operating mechanism.

DRAWINGS

1 is a schematic perspective structural view of an embodiment of an operating mechanism of the present invention;

Figure 2 is a perspective view showing the three-dimensional structure of the closing and tripping device of Figure 1 in a locked state;

Figure 3 is a perspective view showing the three-dimensional structure of the closing and tripping device of Figure 1 in an unlocked state;

Figure 4 is a perspective view showing the structure of the closing trip mechanism of Figure 2;

Figure 5 is a schematic view showing the working principle of the closing trip mechanism of Figure 4;

Figure 6 is a perspective view showing the structure of the locking device of Figure 2;

Figure 7 is a perspective view showing the locking device of Figure 2 in another perspective view;

Figure 8 is a front elevational view of Figure 7;

Figure 9 is a schematic view showing the circuit principle of the operating mechanism of Figure 1 in a closed state;

Figure 10 is a schematic view showing the circuit principle of the latching device of Figure 1 in an open state.

detailed description

Embodiment of the operating mechanism of the present invention: as shown in FIG. 1 to FIG. 8 , the operating mechanism is a spring operating mechanism of an isolated circuit breaker with a closing and locking function, which is mainly provided by the frame and the upper thereof. The electric energy storage device 1, the closing energy storage device 2, the closing trip device 3, the opening energy storage device 4, the tripping trip device 5, the auxiliary switch signal output device 6, and the opening and closing output device 7, The improvement of the operating mechanism in this embodiment lies in the closing trip device 5, and the structure of the other devices belongs to the prior art. The closing trip device 5 is composed of a closing tripping mechanism and a locking device. The closing tripping mechanism is composed of a main body bracket 511 fixed on the frame and a closing detent 512, a closing latch 513 and a closing electromagnet 514 which are disposed from right to left in sequence, and the closing dice 512 and closing The latch 513 is rotatably mounted on the front side of the trip bracket by rotating shafts parallel to each other and extending forward and backward. The closing latch 512 is a pendulum structure in which the upper end is connected to the main body bracket 511, and the closing latch 513 is connected to the main body in the middle. A left and right extending lever structure on the bracket 511, two ends of the closing latch 513 are integrally provided with a left latch swing arm 5131 and a right latch swing arm 5132, and the upper end of the closing electromagnet 514 is fixed with a left latch The trip arm 5131 is fitted with a trip member 5141. The locking device is a locking device for closing and locking the spring operating mechanism of the isolated circuit breaker, and is mainly composed of a locking member, a connecting rod 523, a force applying arm, a biasing shaft 521, a control cam, and a force supporting bracket 5211. The position member, the force applying motor and the auxiliary switch 5212 are configured, wherein the locking member is a locking pin shaft 524 which is assembled on the closing machine base 518 disposed under the right force applying arm, and the force applying bracket 5211 is fixed on the frame. At a position before the main body bracket 511, the biasing shaft 521 is rotatably mounted on the right and left extending axis on the force applying bracket 5211, and the biasing arm is a driving arm 529 fixed on the outer circumference of the biasing shaft 521, and the connecting rod 523 The front end is hinged to the rear end of the lock pin 524 and the rear end is hinged to the convex portion of the drive arm 529. The control cam is a control cam 5210 fixed on the outer circumference of the force applying shaft 521 and on the left side of the drive arm 529. The urging motor 527 is connected to the right end of the urging shaft 521 through a transmission mechanism. The auxiliary switch 5212 is connected to the left end of the urging shaft 521 by a flange transmission, and the limiting member is a locking stroke switch 522 after the urging shaft 521. In the unlocking limit switch before urging the shaft 5215213. The main body bracket 511 and the force applying bracket 5211 form a closing trip bracket for providing a mounting position for the entire closing trip device on the frame, and the locking pin shaft 524, the connecting rod and the driving arm are in the closing trip bracket. A crank slider mechanism is formed on the upper. Thus, when the operating mechanism is in the closing state, the lower end of the closing latch 512 is restrained by the right latching arm 5132 of the closing latch 513 to maintain the retaining pin 516 protruding from the rear end of the energy storage ratchet 515. To terminate the connection, the right latch swing arm 5132 of the closing latch 513 is blocked on the lower side of the limit pin 5133 fixed on the main body bracket 511 such that the right latch swing arm 5132 of the closing latch 513 is at The upper pendulum stroke limit position maintains the limit of the closing pawl 512, that is, the left latch swing arm 5131 and the right latch swing arm 5132 of the closing latch 513 are at the closing position of the swing stroke at this time. The latch 513 is pressed against the closing shovel 512 to close the switch When the latch 512 is closed by the closing latch 513, the latching pin 524 will be below the right latching arm 5132 and block the right latching arm 5132 from swinging downward; When closing, the latching pin 524 needs to be pulled forward first, so that the latching pin 524 of the closing latch 513 is swayed upward by the tripping member 5141 after the latching pin 524 is prevented from the right latching arm 5132. Go to the upper limit position and drive the right latch swing arm 5132 to swing down to the lower limit position. The right latch swing arm 5132 will release the limit of the closing latch 512, so that the closing latch 512 can be The retaining pin 516 is disengaged, and at this time, the swinging stroke limit position of the left latch swing arm 5131 and the right latch swing arm 5132 of the closing latch 513 is pushed by the electromagnet in the closing latch 513 to be disengaged. The unlocking position of the limit of the gate 512. Therefore, the closing frame 518 is mainly composed of a fixing portion fixed on the main body bracket 511 and two vertical walls which are spaced apart from each other. The two vertical walls are integrally disposed on the right side of the fixing portion and are suspended to the right, and the upper sides of the two standing walls are The left and right are gradually tilted upwards, and the front and rear extending guide holes are opened on the right side of the two vertical walls. The guide holes on the two vertical walls are oppositely arranged in pairs, and the guide holes are arranged in two pairs and arranged up and down. On the two walls. The two standing walls are respectively spaced apart at the front and rear side positions of the right latch swing arm 5132 so as to be inserted into the hole wall of the guide perforation inserted through the lock pin shaft 524 when the lock pin shaft 524 is inserted under the right latch swing arm 5132. The front and rear supports are provided for the latching pin 524, i.e., the portion of the latching wall surface of the latching pin 524 that faces away from the right latching arm 5132 forms a support surface that blocks the latching pin 524, the two walls forming The latching pin 524 blocks the right latching arm 5132 from the retaining structure that prevents the latching pin 524 from disengaging from the right latching arm 5132. The connecting rod 523, the urging arm, the urging shaft 521, and the urging motor 527 are formed on the front side of the latching pin 524 to realize the switching of the latching pin 524 to the right latching arm by means of front and rear latching of the latching pin 524. 5132's urging structure for stopping and avoiding.

The urging bracket 5211 is mainly composed of a bottom plate fixed on the frame and a left vertical plate and a right vertical plate erected on the bottom plate, and the left vertical plate and the right vertical plate are respectively supported at positions of the left and right ends of the urging shaft 521, And the limiting shoulders on the opposite sides of the left vertical plate and the right vertical plate are respectively protruded at the left and right ends of the biasing shaft 521. The right end of the urging shaft 521 is passed through the right vertical plate, and a padlock indicating plate 528 indicating the forward and backward swinging position of the driving arm 529 is connected to the passing portion. The urging motor 527 is fixed at a position on the right side of the right vertical plate above the urging shaft 521, the output shaft of the urging motor 527 passes through the upper vertical plate, and the through-out portion of the output shaft passes through the single-stage gear transmission mechanism. Connected to the outer circumference of the urging shaft 521, the driving gear 525 connected to the output shaft in the single-stage gear transmission mechanism is larger than the driven gear 526 connected to the urging shaft 521. The drive arm 529 is on the left side of the driven gear 526. The lock stroke switch 522 and the unlock stroke switch 5213 are both fixed on the right side surface of the left vertical plate, and the contact portions of the lock stroke switch 522 and the unlock stroke switch 5213 are arranged back and forth. The control cam 5210 is at a position between the lock stroke switch 522 and the unlock stroke switch 5213. The auxiliary switch 5212 is on the left side of the left vertical plate and is fixed to the left side edge of the bottom plate by a mounting seat provided on the right side thereof.

The working principle of the closing and tripping mechanism in the closing and tripping device of the operating mechanism of the embodiment is as follows:

The energy storage spring 517 of the spring operating mechanism is energy-storing → under the tension of the energy storage spring 517, the spring pull rod moves downward → The spring pull rod pulls the energy storage ratchet 515 to rotate counterclockwise → the retaining pin 516 mounted on the energy storage ratchet 515 rotates the pressing shutter 512 clockwise → the tripping latch on the closing latch 512 will be pressed Closing the lock latch 513 on the right latch swing arm 5132, causing the closing latch 513 to rotate counterclockwise → due to the restriction of the latching pin 524, the closing latch 513 cannot rotate counterclockwise, thereby achieving the closing latch;

After receiving the closing command, the closing electromagnet 514 is energized and starts to be excited, and the ram on the closing electromagnet 514 is subjected to electromagnetic force, and moves with the tripping member 5141 toward the closing latch 513 → when the ram and the tripping member After reaching a certain speed, the 5141 impacts the collision surface of the left latch swing arm 5131 of the closing latch 513. After the impact latch 513 receives the impact force, the original lock balance of the closing latch 513 is broken, so that the balance of the lock latch 513 is broken. The closing latch 513 rotates clockwise (when the closing latch 513 is rotated clockwise, the closing trip has been achieved) → since the closing latch 513 rotates clockwise, the closing scorpion is no longer closed When the limit is 512, the closing switch 512 also rotates clockwise, and the ratchet 515 is no longer limited. The ratchet 515 rotates counterclockwise with the cam 5210 shaft and the cam 5210 to realize the closing operation.

The working principle of the locking device in the closing trip device is as follows:

After closing the lock, the limit pin 5133 of the isolation locking device is placed under the right end of the closing latch 513, and the closing latch 513 is restricted to move clockwise, thereby maintaining the state of the closing lock and allowing the circuit to be broken. The device cannot be closed at all, so that the isolation circuit breaker is locked in the open position state.

In the control circuit of the TRI motor 527, after the lock circuit is locked to the lock command → the lock contactor in the lock loop is energized, the contact in the circuit of the motor 527 is sucked, and the force applied motor 527 is rotated by rotation → through the single-stage gear The mechanism transmission, the urging shaft 521 rotates → the transmission arm 529 rotates together with the urging shaft 521 → is driven by the connecting rod 523, and the locking pin 524 is linearly guided by the closing guide 518 to perform linear motion before and after insertion. In the brake trip mechanism, the right latch swing arm 5132 of the closing latch 513 is restricted to swing. When the latch pin 524 is moved to the latching position, the control cam 5210 presses the latching stroke switch 522 → because the latching stroke switch 522 is pressed The contact in the latching loop becomes a normally open contact, and the latching loop is de-energized (at the same time, the unlocking stroke switch 5213 of the unlocking loop is not pressed, and the contact in the unlocking loop becomes a normally closed contact; the auxiliary switch After the 5212 is rotated to the locked position, the auxiliary switch 5212 is turned on to perform signal output.) → Since the latching loop is de-energized, the latching contactor loses power, which is in the control circuit. The contact opens, causing the motor 527 to stop → the blocking action ends;

After the unlocking circuit receives the unlocking command in the control circuit of the TRI motor 527, the latching contactor in the unlocking circuit is energized, and the contact in the circuit of the motor 527 is sucked, so that the urging motor 527 is charged in reverse rotation → through The single-stage gear mechanism is driven, and the force-applying shaft 521 is reversely rotated. The transmission arm 529 is reversely rotated along with the force-applying shaft 521. The belt is driven by the connecting rod 523, and the latching pin 524 is withdrawn from the closing tripping mechanism, and the closing is no longer restricted. The right latch swing arm 5132 of the latch 513 is swung down → when the latch pin 524 is moved to the unlocked position, the control cam 5210 presses the unlock stroke switch 5213 → due to the unlock stroke The closing 5213 is pressed, its contact in the unlocking circuit becomes a normally open contact, and the unlocking circuit is de-energized (at the same time, the blocking stroke switch 522 of the blocking circuit is not pressed, and the contact in the locking circuit becomes normally closed) The auxiliary switch 5212 is also rotated to the unlocked position by the biasing shaft 521, and the auxiliary switch 5212 is contacted to perform signal output.) → Since the unlocking circuit is de-energized, the unlocking contactor is de-energized, and its control circuit is in the control circuit. The contact opens to stop the motor 527 → the unlocking action ends.

In the present embodiment, the locking device can be directly mounted on the spring operating mechanism of the ordinary circuit breaker, without modifying the structure of the spring operating mechanism, and inserting the closing shaft pin of the spring operating mechanism through the locking shaft pin on the locking device, The movement of the closure latch 513 is restricted to achieve mechanical latching of the isolated circuit breaker. The isolation locking system realized by the locking device has the advantages of reliability, safety, integration, high versatility, etc., and can reliably ensure that the isolated circuit breaker is locked at the opening position to achieve position locking.

As shown in Figure 9 and Figure 10, F1-circuit breaker spring operating mechanism power supply, F2-locking device power supply, KM1-locking device motor closing contactor, KM2-locking device motor opening contactor, M1-locking device Closing action motor, SBT5-circuit breaker spring operating mechanism closing switch, SBT10-locking device closing switch, S3-locking device closing and closing state signal output auxiliary switch, S1-circuit breaker spring operating mechanism Closing state signal output auxiliary switch, SP1-circuit breaker spring operating mechanism spring storage energy control stroke switch, SP3-locking device closing control stroke switch, SP4-locking device opening control stroke switch, YC-circuit breaker spring operation The moving mechanism closes the electromagnet coil, the X-mechanism internal terminal block, the X1-locking device opening status signal indicator, and the X2-locking device closing status signal indicator.

When the circuit breaker needs to be repaired, the circuit breaker is opened for maintenance, in order to avoid the vibration caused by natural causes such as earthquakes, the manual of human error, and the closing of the spring operating mechanism of the circuit breaker caused by improper secondary or short-circuit operation. The action of the electromagnet causes the circuit breaker spring operating mechanism to close the circuit breaker to electrify the circuit breaker and injure the maintenance personnel. Therefore, it is necessary to put in the circuit breaker spring operating mechanism closing and locking device to mechanically ensure that the circuit breaker spring operating mechanism does not close. .

First of all, the spring operating mechanism must be in the spring storage state (the spring does not have energy storage, and there is no need to close the lock). The spring action mechanism of the circuit breaker springs the energy storage control switch SP1 to close, and the operation lock device is closed. The brake transfer switch SBT10 is closed, the locking device motor closing contactor KM1 coil is energized, the locking device motor closing contactor KM1 contact 13-14 is sucked and held, the locking device is closed, the closing circuit is continuously energized, and the locking device motor closing contactor The contacts 1-2, 3-4, and 5-6 of the KM1 are also closed, so that the contact 1 of the closing device of the closing device is positively rotated positively, and the locking pin 524 is mechanically transmitted by the locking device. Action, limit the closing of the spring operating mechanism of the circuit breaker; when the locking pin 524 is in place, the control cam 5210 pushes the locking device to close the closing control switch SP3 to open the closing and closing device closing circuit, the locking device motor closing contactor KM1 When the power is lost, the contacts 13-14, 1-2, 3-4, 5-6 are disconnected, the motor circuit is de-energized, and the rotating shaft 521 is rotated and the locking device is closed and the signal is outputted to the auxiliary switch S3 to be turned on. Point and closed point cut Change, so that the blocking device opening state signal indicator light X1 is powered off and extinguished, the locking device closing state signal indicator light X2 is energized and brightened, and at the same time, the circuit breaker spring operating mechanism closing control circuit is connected to the locking device to close and close the closing state signal. The contact 17-18 of the output auxiliary switch S3 is disconnected, so that the state of the closing control circuit and the locking device of the circuit breaker spring operating mechanism are interlocked, and the breaking is realized, and the closing cannot be performed. Due to the sudden loss of power of the locking device motor M1, the internal product reverses the electromotive force, and the reverse current generated through the brake circuit reverses the motor to achieve braking. After the locking device is closed, the locking device opening control switch SP4 is closed, and the opening operation can be performed at this time. The principle of the secondary circuit of the opening operation is the same as that of the closing circuit. The only difference is that the contact 2 of the closing and closing operation motor M1 is positively charged, and the reverse rotation is realized to open the locking device.

In the above embodiment, the urging structure is composed of a driving slider mechanism and an electric device. In other embodiments, the electric device can also be replaced by a manual driving device, and the crank slider mechanism can also be driven by an electric push rod mechanism or the like. The agency either directly pushes the push-pull structure instead.

In the above embodiment, the latching pin blocks the lower side of the right latch swing arm. In other embodiments, the latching pin can also be blocked above the left latch swing arm, and when the latch has a half shaft configuration The latching pin needs to be blocked on the side of the latching arm that faces away from the arm of the operating shaft or the ram of the electromagnet so that the latching pin can be placed in the latch when the latching arm is in the locking position The arm unlocks the position in the direction of the swing and stops.

In the above embodiment, the latching member is a latching latch that is inserted into the latching trip bracket. In other implementations, the latching latch can also be replaced by a latching half shaft, a latching crankshaft or a latching swing arm, wherein the latching axle is blocked. And the locking crankshaft is axially mounted on the closing trip bracket, and the solid part of the closing half shaft and the locking crankshaft can be in contact with the latch swing arm to realize the blocking of the latch swing arm, the groove portion and the latch When the swing arm is engaged, the latch swing arm can be avoided; the lock swing arm can swing to the position of the lock latch swing arm when the latch swing arm needs to be blocked, and swing to other positions when the latch swing arm needs to be avoided.

In the above embodiment, the locking device is used on the closing and tripping device. In other embodiments, the above-mentioned locking device can also be assembled on the opening and closing device, or the locking device can be assembled in the opening and closing device. Device.

The embodiment of the locking device of the present invention: the structure of the locking device in the present embodiment is the same as that of the locking device in the above embodiment, and therefore will not be described again.

Claims

A locking device, comprising: a rigid locking member for movably fitting on the trip bracket for blocking and avoiding in a direction in which the latch swing arm unlocks when the latch swing arm is in the lock position The locking member is provided with a urging structure for switching the blocking and escaping of the latching arm to the latching arm.
The latching device according to claim 1, wherein the latching member is a latching pin for movably guiding the mounting on the trip bracket in the direction of the rotation axis of the latch, and the biasing structure is for axially locking the pin shaft The thrusting structure to the thrust.
The latching device according to claim 2, wherein the thrusting structure comprises a biasing arm for pivoting the trip bracket and a connecting rod bridged between the biasing arm and the latching pin, The force swing arm has an axis of rotation that is spatially staggered with the axis of rotation of the latch, and the force swing arm, the link and the latch pin form a crank slider mechanism on the trip bracket.
The latching device according to claim 3, wherein the biasing arm is fixed to the outer circumference of the biasing shaft, and is provided at a periphery of the biasing arm for pushing the latch pin to the latching latch After the position of the arm, the locking force arm that prevents the force applying arm from continuing to swing in the direction of pushing the locking pin shaft is stopped.
The locking device according to claim 4, wherein the locking limiting member is a travel switch spaced apart from the periphery of the biasing swing arm, and the control cam corresponding to the locking stroke switch is fixed on the biasing shaft, and the control cam and the control cam are The force swing arm is spaced apart, and the force-applying motor for closing when the control cam touches the lock limiter is electrically connected to the lock limiter by the control device, and the output end of the force-applying motor is connected to the force-applying shaft .
The operating mechanism comprises a frame and a tweezers and a tripping device assembled thereon, and the tripping device comprises a tripping bracket fixed or integrally arranged on the frame, and the tripping bracket is mounted on the parallel axis and is equipped with a tweezers And a latch for releasing the limit of the latch under the action of the operating rod or the electromagnet, the latch is fixedly or integrally provided with a radially overhanging latch arm along the axis of rotation, the latch arm The limit positions on the two sides of the swinging stroke on the trip bracket are respectively corresponding to the locking position when the latch is pressed against the latch to limit the latch to the latch, and is used for the latch to be actuated. The lever or the electromagnet is pushed up to release the unlocking position of the limit of the latch, wherein the trip bracket is further equipped with a locking device, and the latching device comprises a movable armrest mounted on the trip bracket for the latch arm a rigid latching member that can be blocked and evaded in the direction of the latching arm unlocking position when in the locking position, and is provided on the trip bracket for preventing the latching member from being blocked when the latching member blocks the latching arm a release structure on the latch swing arm, which is provided on the lock member for switching latching The latch arm on the stopper and the escape of the urging structure.
The operating mechanism according to claim 6, wherein the blocking member is movably guided to the locking pin shaft mounted on the trip bracket in the direction of the rotation axis of the latch, and the stopping structure comprises a fixed or integral arrangement on the trip bracket. The upper support wall is provided with a support surface for blocking the side of the latch pin facing away from the latch arm when the latch pin blocks the latch arm; the biasing structure is for the latching pin The thrusting structure of the shaft axial thrusting.
The operating mechanism according to claim 7, wherein the thrusting structure comprises a force swinging arm that is rotatably mounted on the trip bracket and a connecting rod that is bridged between the force applying arm and the latching pin. The axis of rotation of the swing arm and the axis of rotation of the latch The space is vertically staggered, and the force swing arm, the connecting rod and the locking pin form a crank slider mechanism on the trip bracket.
The operating mechanism according to claim 8, wherein the biasing arm is fixed to the outer circumference of the biasing shaft, and is provided at a periphery of the biasing arm for pushing the latch at the latching pin to the latching latch After the position of the swing arm, the lock limit arm that prevents the force swing arm from continuing to swing in the direction of pushing the lock pin shaft is fixed on the trip bracket.
The operating mechanism according to claim 9, wherein the locking limiting member is a travel switch spaced apart from the periphery of the biasing swing arm, and a control cam that cooperates with the locking stroke switch is fixed on the biasing shaft, and the control cam is controlled. The force swinging arm is spaced apart from the force-applying arm and is electrically connected to the lock limiter by a control device for closing the force-applying motor when the control cam touches the lock limiter. The output end of the force-applying motor is connected to the force-applying shaft. on.