CN113889377B

CN113889377B - breaker

Info

Publication number: CN113889377B
Application number: CN202010625027.5A
Authority: CN
Inventors: 邵江华; 涂兵; 夏晓敏
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2025-03-04
Anticipated expiration: 2040-07-02
Also published as: CN113889377A

Abstract

The utility model provides a circuit breaker, includes the phase pole module that sets up side by side and is used for driving the reclosing pole module of the automatic divide-shut brake of phase pole module, the phase pole module divide into L phase pole module and N phase pole module by a baffle, L phase pole module includes L polar operating device, be connected with the L pole moving contact of L polar contact mechanism on L polar operating device, N phase pole module includes earth leakage protection module, earth leakage protection module includes zero sequence transformer, electric leakage tripping device, test button and residual current action test circuit, earth leakage protection module still includes residual current action test circuit has two break points, and one of them break point is controlled to open or close by test button as first break point, and another break point is controlled to open or close by the linkage lever as second break point, and first break point, second break point are opened any one and can not make residual current action test circuit switch on. The potential safety hazard caused by long-time pressing of the test button when the circuit breaker is disconnected or reversely connected is avoided.

Description

Circuit breaker

Technical Field

The invention relates to a low-voltage electrical appliance, in particular to a circuit breaker.

Background

The low-voltage circuit breaker is also called an automatic air switch or an automatic air circuit breaker, and can be used for distributing electric energy and protecting overload and circuit breaking of a circuit and power supply equipment, and can also be used for infrequent circuit switching and infrequent motor starting. The residual current action test loop is arranged in the existing circuit breaker, the residual current action test loop generally adopts a single-breakpoint structure, two ends of the residual current action test loop of the single-breakpoint structure are respectively connected to the outgoing line ends of two adjacent poles, when a user power supply is reversely connected (namely, the outgoing line is connected with the power supply), the circuit breaker is not switched on under the condition that the power supply voltage is switched on, and at the moment, a test button is pressed all the time, so that the resistance of the residual current test loop is burnt out or a release is burst, the leakage protection function of the circuit breaker is invalid, and potential safety hazards exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a circuit breaker with simple structure and high reliability.

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

The circuit breaker comprises phase pole modules and reclosing pole modules, wherein the phase pole modules are arranged in parallel and are used for driving the phase pole modules to automatically switch on and off, the phase pole modules are divided into L phase pole modules and N phase pole modules by a partition plate, the L phase pole modules comprise L pole operating mechanisms, L pole moving contacts of L pole contact mechanisms are connected to the L pole operating mechanisms, the N phase pole modules comprise N pole operating mechanisms, N pole contact mechanisms and leakage protection modules, the N pole operating mechanisms comprise linkage levers, one ends of the linkage levers penetrate through the partition plate and are connected with the L pole operating mechanisms in a linkage mode, the other ends of the linkage levers are connected with N pole moving contacts of the N pole contact mechanisms, and under the action of the linkage levers, the N pole operating mechanisms act to drive the N pole operating mechanisms to drive the N pole contact mechanisms to realize switching on and off of the N pole modules;

the leakage protection module comprises a zero sequence transformer and a leakage tripping mechanism, and when the zero sequence transformer detects leakage current, the reclosing electrode module drives the leakage tripping mechanism to act so as to switch off the phase electrode module;

the leakage protection module further comprises a test button and a residual current action test loop, wherein the residual current action test loop is provided with two break points, one break point is used as a first break point to be controlled to be opened or closed by the test button, the other break point is used as a second break point to be controlled to be opened or closed by the linkage lever, and any break point of the first break point and the second break point can not be used for conducting the residual current action test loop.

Further, the residual current action test loop comprises a first torsion spring, a second torsion spring and a contact piece, wherein the first torsion spring is arranged on one side of the test button, a first break point is formed by matching a first elastic arm of the first torsion spring with one end of the contact piece, the test button is matched with the first elastic arm of the first torsion spring, the break and the closure of the first break point are realized by pressing the test button, a second elastic arm of the first torsion spring is connected with a circuit board of the reclosing pole module through a wire, the second torsion spring is arranged on one side of the N pole operating mechanism, the end part of the first elastic arm of the second torsion spring is matched with the other end of the contact piece to form a second break point, when the N pole contact mechanism is switched on and off, the second break point is realized by pressing the middle part of the first elastic arm of the second torsion spring through the swinging action of the linkage lever, and the second elastic arm of the second torsion spring is connected with an N pole wire inlet terminal in the N pole module through the wire.

Further, a bending part is arranged in the middle of the first elastic arm of the second torsion spring and is used for being matched with the linkage lever to realize the closing or opening of the second break point.

Further, the N-phase pole module further comprises an N-pole incoming line terminal, an N-pole outgoing line terminal and an N-pole handle structure, wherein the N-pole incoming line terminal and the N-pole outgoing line terminal are respectively arranged on two sides of the N-phase pole module, the N-pole handle structure and the test button are arranged on the upper portion of the N-phase pole module, the zero-sequence transformer is arranged on one side close to the N-pole outgoing line terminal, the zero-sequence transformer is arranged on the lower portion of the N-phase pole module, the electric leakage tripping mechanism is arranged in the middle of the N-phase pole module and is arranged between the N-pole handle structure and the zero-sequence transformer, an N-pole operating mechanism and an N-pole contact mechanism are arranged between the electric leakage tripping mechanism and the N-pole incoming line terminal, an N-pole moving contact of the N-pole contact mechanism is connected to a linkage lever of the N-pole operating mechanism, an N-pole fixed contact of the N-pole contact mechanism is fixed on one side of the zero-sequence transformer and is arranged opposite to the N-pole moving contact, and the residual current operating circuit is arranged around the electric leakage tripping mechanism and the upper portion of the N-pole operating mechanism.

Further, the N pole operating mechanism further comprises a tension spring, one end of the tension spring is connected to the N pole movable contact, and the other end of the tension spring is fixedly installed and connected with the circuit board of the reclosing pole module through a wire.

Further, the electric leakage tripping mechanism comprises an electric leakage tripping device, a push rod and a reset spring for driving the push rod, the electric leakage tripping device is arranged on the partition board and is connected with the circuit board of the reclosing electrode module, the push rod is rotatably arranged on the partition board, an actuating part matched with a push rod of the electric leakage tripping device and a touch part matched with the L electrode operating mechanism through the partition board are arranged on the push rod, when electric leakage occurs, the push rod of the electric leakage tripping device drives the push rod to overcome the elastic force of the reset spring to rotate, so that the touch part pushes the L electrode operating mechanism to act and the phase electrode module is separated under the linkage action of the linkage lever.

Further, a rotating shaft for rotating and installing the push rod and a second limiting boss for connecting with the reset spring are arranged on the partition board, a first linkage hole is formed in the partition board, the first linkage hole is used for matching the L-pole operating mechanism with the touch part, a second linkage hole is formed in the partition board, and the second linkage hole is used for linkage of the linkage lever and the L-pole operating mechanism.

Further, the push rod comprises a push rod shaft which is arranged on the partition board in a rotating mode, a first limiting boss which is matched with the reset spring is arranged above the push rod shaft in a protruding mode, a step-shaped push rod plate is arranged on one side wall of the push rod shaft in an extending mode, an actuating portion is arranged at one end corner of the push rod plate, far away from the push rod shaft, in an upward extending mode along the axial direction of the push rod shaft, and a touch portion is arranged at the other end corner of the push rod plate, far away from the push rod shaft, in a downward extending mode along the axial direction of the push rod shaft.

The L-phase pole module comprises L-pole incoming line terminals and L-pole outgoing line terminals which are respectively arranged on two sides of the L-phase pole module, an L-pole handle structure, an L-pole operating mechanism, an L-pole contact mechanism, a short-circuit protection mechanism, an arc extinguish chamber and an overload tripping device are arranged between the L-pole incoming line terminals and the L-pole outgoing line terminals, the L-pole handle structure is arranged on the upper portion of the L-phase pole module, the L-pole operating mechanism is arranged on one side of the L-pole handle structure, the L-pole handle structure and the L-pole operating mechanism are in linkage through a connecting rod, the L-pole operating mechanism and the arc extinguish chamber are arranged on the lower portion of the L-phase pole module, the short-circuit protection mechanism is arranged between the L-pole handle structure and the arc extinguish chamber and is opposite to the L-pole operating mechanism, an L-pole moving contact of the L-pole contact mechanism is fixedly arranged on one side of the arc extinguish chamber and is opposite to the L-pole moving contact, and the overload tripping device is arranged between the L-pole incoming line terminals and the L-pole operating mechanism.

Further, the L pole operating mechanism comprises a connecting rod, a lock catch, a jump buckle and a contact support, wherein the contact support is pivotally arranged in the L phase pole module and rotates around a main shaft, the jump buckle and the lock catch are pivotally arranged on the contact support and form a snap connection, one end of the connecting rod is connected with an L pole handle structure, the other end of the connecting rod is connected with the jump buckle, and the L pole moving contact is elastically and fixedly arranged on the contact support.

Further, a revolute pair is arranged on the upper portion of the lock catch, the revolute pair is used for rotatably mounting the lock catch on the contact support, a lock catch portion is arranged on one side of the revolute pair and is used for being matched with the jump buckle to form a snap-fit connection, a linkage shaft hole is formed in the other side of the revolute pair, a lock catch linkage shaft is arranged in the linkage shaft hole, an impact portion and a triggering portion are arranged on the lower portion of the lock catch, the impact portion is used for being matched with a short-circuit protection mechanism, the triggering portion penetrates through a partition plate and is used for being matched with an electric leakage tripping mechanism, a tripping hook is further arranged on the lower portion of the lock catch and is used for being matched with an overload tripping device, an avoidance notch for avoiding a main shaft is formed in the lock catch, and the avoidance notch is located between the lock catch portion and the impact portion.

The reclosing pole module comprises a driving handle, a gear transmission device, a tripping driving structure, a motor and a circuit board, wherein the driving handle, the gear transmission device and the motor are arranged on the surface of the circuit board, the driving handle and the gear transmission device are in matched rotation through a driving connecting rod, the gear transmission device is in transmission connection with the motor, the motor drives the driving connecting rod to drive the driving handle through the gear transmission device to realize automatic closing, the tripping driving structure is arranged on one side of the gear transmission device, which faces the circuit board, the tripping driving structure comprises a driving boss arranged on the gear transmission device and a tripping driving piece rotatably arranged on a housing of the reclosing pole module, one end of the tripping driving piece is rotatably arranged on the housing of the reclosing pole module, and the other end of the tripping driving piece is correspondingly arranged with a locking linkage shaft of the L pole operating mechanism.

According to the circuit breaker, the phase pole module and the reclosing pole module form a P+N structure, the phase pole module is divided into the L-phase pole module and the N-phase pole module by the partition board, the N-phase pole module is internally provided with the residual current action test loop with two break points, the two break points are respectively operated by the test button and the linkage lever of the N-pole operating mechanism, and the test button loop with the two break points solves the problems of personal electric shock danger caused by long-time pressing of the test button and leakage protection function failure caused by long-time pressing of the test button under the condition of disconnection of the circuit breaker.

In addition, be provided with the extension spring on the N utmost point moving contact, the extension spring can provide the closing drive power for the N utmost point moving contact, also can make the circuit board of reclosing the utmost point module can follow the N utmost point and get the electricity simultaneously.

Drawings

Fig. 1-2 are schematic structural views of a circuit breaker according to the present invention;

fig. 3 is a schematic structural view of an L-phase pole module in a circuit breaker according to the present invention;

FIG. 4 is a schematic view of the structure of an L-pole operating mechanism in a circuit breaker according to the present invention;

fig. 5 is a schematic structural view of a latch in a circuit breaker according to the present invention;

fig. 6 is a schematic structural diagram (split gate) of an N-phase pole module in a circuit breaker according to the present invention;

fig. 7 is a schematic structural diagram (closing) of an N-phase pole module in a circuit breaker according to the present invention;

fig. 8 is a schematic structural view of an N-pole moving contact in a circuit breaker according to the present invention;

Fig. 9 is a schematic structural view of a linkage lever in a circuit breaker according to the present invention;

fig. 10 is a schematic view of a swing link structure in a circuit breaker according to the present invention;

FIG. 11 is a schematic view of a recloser pole module in a circuit breaker according to the present invention;

fig. 12 is a schematic structural view of a push rod in a circuit breaker according to the present invention;

fig. 13 is a schematic view of electrical connections in a circuit breaker according to the present invention.

Detailed Description

A specific embodiment of a circuit breaker according to the present invention is further described below with reference to the examples shown in fig. 1 to 13. A circuit breaker of the present invention is not limited to the description of the following embodiments.

The circuit breaker comprises phase pole modules and reclosing pole modules 3, wherein the phase pole modules are arranged in parallel and are used for driving the phase pole modules to automatically switch on and off, the phase pole modules are divided into an L phase pole module 1 and an N phase pole module 2 by a partition board 5, the L phase pole module 1 comprises an L pole operating mechanism 13, an L pole moving contact 141 of an L pole contact mechanism is connected to the L pole operating mechanism 13, the N phase pole module 2 comprises an N pole operating mechanism, an N pole contact mechanism and a leakage protection module, the N pole operating mechanism comprises a linkage lever 231, one end of the linkage lever 231 penetrates through the partition board 5 and is connected with the L pole operating mechanism 13 in a linkage way, the other end of the linkage lever 231 is connected with an N pole moving contact 241 of the N pole contact mechanism, and under the action of the linkage lever 231, the switching on and off of the N phase pole module 2 is realized by the N pole operating mechanism 13 to drive the N pole contact mechanism to realize;

the leakage protection module comprises a zero sequence transformer 41 and a leakage tripping mechanism, and when the zero sequence transformer 41 detects leakage current, the reclosing electrode module 3 drives the leakage tripping mechanism to act so as to enable the phase electrode module to be separated;

The leakage protection module further comprises a test button 45 and a residual current operation test loop, wherein the residual current operation test loop is provided with two break points, one break point is used as a first break point to be controlled to be opened or closed by the test button 45, the other break point is used as a second break point to be controlled to be opened or closed by the linkage lever 231, and any break point of the first break point and the second break point can not be used for conducting the residual current operation test loop.

According to the circuit breaker, the phase pole module and the reclosing pole module 3 form a 1P+N structure, the phase pole module is divided into the L-phase pole module 1 and the N-phase pole module 2 by the partition board 5, a residual current operation test loop with two break points is arranged in the N-phase pole module 2, the two break points are respectively operated by the test button 45 and the linkage lever 231 of the N-pole operating mechanism, and the problem that the circuit breaker is in failure in the electric shock function caused by long-time pressing of the test button 45 and the electric leakage protection function caused by long-time pressing of the test button 45 under the condition of disconnection of the circuit breaker is solved.

An embodiment is provided in connection with fig. 1-13, and the circuit breaker comprises a phase pole module and a reclosing pole module 3 which are arranged in parallel, the phase pole module comprises a phase pole module shell, a partition board 5 is arranged in the phase pole module shell, a cavity in the phase pole module shell is divided into two cavities by the partition board 5, an L-phase pole module 1 and an N-phase pole module 2 are respectively installed in the two cavities, the L-phase pole module 1 and the N-phase pole module 2 are mutually independent and are connected in a linkage mode, the L-phase pole module 1 comprises an L-pole operating mechanism 13, the N-phase pole module 2 comprises an N-pole operating mechanism, an N-pole contact mechanism and a leakage protection module, the N-pole operating mechanism comprises a linkage lever 231, one end of the linkage lever 231 penetrates through the partition board 5 to be connected with the L-pole operating mechanism 13 in a linkage mode, the other end of the linkage lever 231 is connected with an N-pole moving contact 241 in the N-pole contact mechanism, the N-pole operating mechanism is different from the L-pole operating mechanism, the N-pole operating mechanism is not a complete operating mechanism, and the N-pole contact mechanism needs to be separated from the L-pole operating mechanism 13, namely, when the L-phase pole operating mechanism is separated from the L-pole operating mechanism to drive the L-phase pole module 1, and the N-phase pole operating mechanism is separated from the L-pole operating mechanism to realize the opening and the switching from the phase module through the phase module.

As shown in fig. 1-5, the L-phase pole module 1 includes an L-pole handle structure 12, an L-pole operating mechanism 13, an L-pole contact mechanism, a short-circuit protection mechanism 16, and an overload trip device 17, where the L-pole handle structure 12 is linked with a driving handle 31 of the reclosing pole module 3 through a handle linkage shaft, the reclosing pole module 3 drives the L-pole handle structure 12 through the handle linkage shaft to implement automatic switching-on of the phase pole module, when a main circuit is short-circuited, an electromagnetic system in the short-circuit protection mechanism 16 acts to drive the L-pole operating mechanism 13 to trip to implement switching-off of the circuit breaker module, and when the main circuit is overloaded, a double-gold component of the overload trip device 17 acts to drive the L-pole operating mechanism 13 to trip to implement switching-off of the phase pole module.

The L-phase pole module 1 is described in detail with reference to fig. 2-5, the L-phase pole module 1 comprises an L-pole incoming line terminal 111 and an L-pole outgoing line terminal 112 which are respectively arranged at two sides of the L-phase pole module 1, an L-pole handle structure 12, an L-pole operating mechanism 13, an L-pole contact mechanism, a short-circuit protection mechanism 16, an arc extinguishing chamber 15 and an overload tripping device 17 are arranged between the L-pole incoming line terminal 111 and the L-pole outgoing line terminal 112, the L-pole handle structure 12 is arranged at the upper part of the L-phase pole module 1, the L-pole operating mechanism 13 is arranged at one side of the L-pole handle structure 12, the L-pole handle structure 12 and the L-pole operating mechanism 13 are linked through a connecting rod 133, the arc extinguishing chamber 15 is arranged at the lower part of the L-phase pole module 1, the short-circuit protection mechanism 16 is arranged between the L-pole handle structure 12 and the arc extinguishing chamber 15, the L-pole protection mechanism 16 is opposite to the L-pole operating mechanism 13, an L-pole moving contact 141 of the L-pole contact mechanism is connected to the L-pole operating mechanism 13, an L-pole static contact 142 of the L-pole mechanism is fixedly arranged at one side of the L-pole contact 15 and is opposite to the L-pole contact 141, and the L-pole moving contact 141 is arranged between the L-pole moving mechanism and the L-pole moving device 13 and the L-pole operating mechanism 13.

As shown in fig. 3-5, the L-pole operating mechanism 13 includes a connecting rod 133, a latch 131, a latch 132, and a contact support, where the contact support is pivotally mounted in the L-phase pole module 1, as shown in fig. 4, the contact support is rotatably mounted on the main shaft 135, the contact support rotates around the main shaft 135, the latch 132 and the latch 131 are pivotally mounted on the contact support and form a latch connection, one end of the connecting rod 133 is connected with the L-pole handle structure 12, the other end of the connecting rod 133 is connected with the latch 132, the L-pole moving contact 141 is fixedly mounted on the contact support through a spring elasticity, after the latch 131 and the latch 132 form a latch connection, the L-pole handle structure 12 is operated to drive the L-pole moving contact 141 to rotate in a closing direction, and at this time, the latch 131 in the latch structure rotates around the main shaft 135, preferably, a notch 131f for avoiding the main shaft 135 is provided on the latch 131. The latch 131 is described with reference to fig. 5, the upper part of the latch 131 is provided with a revolute pair 131a, the revolute pair 131a is used for rotatably mounting the latch 131 on a contact support, one side of the revolute pair 131a is provided with a latch part 131b, the latch part 131b is convexly arranged towards the direction of the trip button 132, the latch part 131b is used for being matched with the trip button 132 to form a snap-fit connection, the other side of the revolute pair 131a is provided with a linkage shaft hole 131c, a latch linkage shaft is mounted in the linkage shaft hole 131c and extends into the reclosing pole module 3 and is used for being matched with a trip driving structure of the reclosing pole module 3 to realize automatic switching-off, the lower part of the latch 131 is provided with a striking part 131d and a triggering part 131e, the striking part 131d faces towards the side of the electromagnetic trip device of the short-circuit protection mechanism 16 where the striker is arranged, the striking part 131d is used for being matched with the short-circuit protection mechanism 16, the triggering part 131e passes through the partition 5 and is used for being matched with the push rod 43 of the trip mechanism to be used for tripping the circuit breaker when the electric leakage fault occurs, the lower part of the latch 131 is provided with a latch linkage shaft, the latch linkage shaft 134 is further provided with a hook 134 for being matched with the hook 131 at one end of the trip device 17, and the overload protection device is used for being matched with the overload device 17 at the other end of the overload release device 17. The avoiding notch 131f of the latch 131 is preferably an arc-shaped groove as shown in fig. 5, and is located between the latch portion 131b and the striking portion 131 d.

The short-circuit protection mechanism 16 comprises an electromagnetic release, the electromagnetic release comprises an electromagnetic coil, one end of the electromagnetic coil is provided with a firing pin, the firing pin is opposite to an impact part 131d of the lock catch 131, when a main circuit is in short circuit, the lock catch 131 is rotated by the firing pin, the lock catch 131 is unlocked by the snap connection of the lock catch 132, and the phase pole module is separated.

The overload trip device 17 comprises a double-gold assembly, the double-gold assembly comprises a bimetallic strip, two sides of one end of the bimetallic strip are fixedly connected with an arc striking plate and a connecting piece, one ends of the bimetallic strip and the connecting piece form a fixed end of the double-gold assembly, the bimetallic strip is positioned between the arc striking plate and the connecting piece, the other end of the bimetallic strip serves as a movable end of the double-gold assembly, the movable end of the double-gold assembly corresponds to the trip hook 134, the other end of the arc striking plate extends into the arc extinguishing chamber 15, and the other end of the connecting piece is connected with the L-pole incoming terminal 111.

Referring to fig. 1,2, 6-10, and 12, the N-phase pole module 2 is described, where the N-phase pole module 2 includes an N-pole incoming line terminal 211 and an N-pole outgoing line terminal 212, where the N-pole incoming line terminal 211 and the N-pole outgoing line terminal 212 are respectively disposed on two sides of the N-phase pole module 2, and an N-pole handle structure 22, an N-pole operating mechanism, and an N-pole contact mechanism are disposed between the N-pole incoming line terminal 211 and the N-pole outgoing line terminal 212, where the N-pole handle structure 22 is disposed on an upper portion of the N-phase pole module 2, and the N-pole handle structure 22 is linked with the L-pole handle structure 12 through a handle linkage shaft, so that the L-pole handle structure 12 swings together with the L-pole handle structure 12 when the N-phase pole module is switched on and off. The N pole operating mechanism comprises a linkage lever 231, the N pole contact mechanism comprises an N pole moving contact 241 and an N pole fixed contact 242, one end of the linkage lever 231 penetrates through the partition board 5 to be connected with the L pole operating mechanism 13 in a linkage mode, the other end of the linkage lever 231 is connected with the N pole moving contact 241, the N pole fixed contact 242 is fixedly arranged in the N phase pole module 2, the N pole fixed contact 242 is oppositely arranged with the N pole moving contact 241, the linkage lever 231 drives the N pole moving contact 241 to act under the linkage action of the L pole operating mechanism 13 to realize the opening and closing of the N phase pole module 2, and the N pole contact mechanism performs opening and closing actions along with the swinging of the linkage lever 231.

As shown in fig. 8-10, one end of the linkage lever 231 is provided with a first connection hole 231a, the first connection hole 231a is used for being rotatably connected with a revolute pair 131a of the lock catch 131, the other end of the linkage lever 231 is provided with a connection shaft 231b, the connection shaft 231b protrudes towards one side far away from the L-phase pole module 1, an N-pole moving contact 241 and a swinging connecting rod 243 are rotatably installed on the connection shaft 231b, and the other end of the swinging connecting rod 243 and the middle part of the N-pole moving contact 241 are jointly installed on a swinging shaft 244 fixedly arranged in the N-phase pole module 2. When the L-pole operating mechanism 13 performs clockwise closing rotation around the main shaft 135, the linkage lever 231 also rotates clockwise, and the linkage lever 231 drives the swinging link 243 to rotate clockwise, and the swinging link 243 drives the N-pole moving contact 241 to rotate clockwise, because the swinging link 243 and the N-pole moving contact 241 are connected to the unfixed and suspended connecting shaft 231b together, the swinging shaft 244 is fixed inside the N-phase pole module 2, and when the swinging link 243 rotates clockwise around the swinging shaft 244, the swinging link 243 drives the lower part of the linkage lever 231 to swing to the right in fig. 8; similarly, when the L-pole operating mechanism 13 drives the N-pole moving contact 241 to perform the opening rotation, the linkage lever 231 swings to the left in fig. 8 under the action of the swinging link 243 to return to the initial position.

The N-pole operating mechanism is further provided with a tension spring 232, one end of the tension spring 232 is connected to the N-pole moving contact 241, the other end of the tension spring 232 is fixedly installed and connected with the circuit board 35 of the reclosing pole module 3 through a wire, the tension spring 232 provides a closing driving force for opening and closing of the N-pole contact mechanism, and meanwhile the circuit board 35 of the reclosing pole module 3 can take electricity from the N-phase pole module 2.

The leakage protection module arranged in the N-phase pole module 2 comprises a leakage tripping mechanism, a zero sequence transformer 41, a test button 45 and a residual current operation test loop for generating a simulated leakage current, when the zero sequence transformer 41 detects the leakage current or the simulated leakage current, the controller of the reclosing pole module 3 drives the leakage tripping mechanism to act so as to enable the phase pole module to be separated, wherein the separation of the N-phase pole module 2 is realized by means of the L-pole operation mechanism 13 of the L-phase pole module 1.

The leakage tripping mechanism comprises a leakage tripping device 42, a push rod 43 and a reset spring 44 for driving the push rod 43, wherein the leakage tripping device 42 is arranged on the partition board 5 and is connected with the circuit board 35 of the reclosing pole module 3, the push rod 43 is rotatably arranged on the partition board 5, the push rod 43 is provided with an actuating part 43d matched with a push rod of the leakage tripping device 42 and a touch part 43e matched with the L pole operating mechanism 13 through the partition board 5, when in leakage, the push rod of the leakage tripping device 42 drives the push rod 43 to rotate against the elastic force of the reset spring 44, so that the touch part 43e pushes the L pole operating mechanism 13 to act and the phase pole module is separated under the linkage action of the linkage lever 231.

The zero sequence transformer 41 is used for sensing leakage current or simulated leakage current of a main circuit, the zero sequence transformer 41 is arranged at the lower part of the N-phase pole module 2, the main circuit of the N-phase pole module 2 and the main circuit of the L-phase pole module 1 pass through the zero sequence transformer 41, the leakage tripping device 42 is arranged between the N-pole handle structure 22 and the zero sequence transformer 41, the push rod 43 is rotatably arranged between the linkage lever 231 and the leakage tripping device 42, the zero sequence transformer 41 senses feedback of leakage current to the circuit board 35 of the reclosing pole module 3, the controller of the circuit board 35 controls the leakage tripping device 42 to act, the push rod 43 is pushed by the push rod 43 to rotate by the push rod 43, the trigger part 43e of the push rod 43 is matched with the trigger part 131e of the lock catch 131 of the L-pole operating mechanism 13, the tripping button 132 and the lock catch 131 in the L-pole operating mechanism 13 are unlocked, and the N-pole contact mechanism is opened under the action of the linkage lever 231.

As shown in fig. 12, the push rod 43 includes a push rod shaft 43a, the push rod shaft 43a is used for rotatably mounting the push rod 43 on the partition 5, a first limit boss 43b for cooperating with a return spring 44 is protruding from an upper portion of the push rod shaft 43a, the first limit boss 43b is T-shaped, a stepped push rod plate 43c is extended from a side wall of one side of the push rod shaft 43a, an actuating portion 43d is extended upward along an axial direction of the push rod shaft 43a at an end corner of the push rod plate 43c away from the push rod shaft 43a, and a touch portion 43e is extended downward along an axial direction of the push rod shaft 43a at another end corner of the push rod plate 43c away from the push rod shaft 43 a. The return spring 44 is a torsion spring, the return spring 44 is sleeved on the push rod shaft 43a of the push rod 43, one end of the return spring 44 is connected with the first limit boss 43b on the push rod 43, and the other end of the return spring 44 is matched with the second limit boss arranged on the partition board 5.

The leakage protection module further comprises a test button 45 and a residual current operation test loop, wherein the residual current operation test loop is used for generating simulated leakage current to enable the leakage release 42 to operate so as to drive the N-pole contact mechanism to break, the residual current operation test loop is provided with two break points, one break point serves as a first break point to be controlled to be opened or closed by the test button 45, the other break point serves as a second break point to be controlled to be opened or closed by the linkage lever 231, and any break point of the first break point and the second break point cannot enable the residual current operation test loop to be conducted. The problem of the circuit breaker under the disconnection condition, the personal electric shock danger that long time presses test button 45 to lead to and the earth leakage protection function inefficacy that long time presses test button 45 to lead to under the reverse wiring condition has been effectively solved.

The residual current operation test circuit comprises a first torsion spring 46, a second torsion spring 47 and a contact piece 48, wherein the first torsion spring 46 is arranged on one side of the test button 45, a first elastic arm 461 of the first torsion spring 46 is matched with one end of the contact piece 48 to form a first break point, the test button 45 is matched with the first elastic arm 461 of the first torsion spring 46, the first break point is opened and closed by pressing the test button 45, a second elastic arm 462 of the first torsion spring 46 is connected with the circuit board 35 of the reclosing pole module 3 through a wire, the second torsion spring 47 is arranged on one side of the N pole operation mechanism, the end part of the first elastic arm 471 of the second torsion spring 47 is matched with the other end of the contact piece 48 to form a second break point, when the N pole contact mechanism is opened and closed, the middle part of the first elastic arm 471 of the second torsion spring 47 is pressed through the swinging action of the linkage lever 231 to enable the second break point to be opened and closed, and the second elastic arm 472 of the second torsion spring 47 is connected with the N pole terminal 211 in the N phase pole module 2 through the wire.

In combination with fig. 2, 6 and 7, an embodiment of a residual current operation test circuit is provided, the test button 45 is disposed at the upper portion of the N-phase pole module 2, the test button 45 and the N-pole handle structure 22 are disposed at two sides of the N-phase pole module 2, respectively, the residual current operation test circuit is disposed around the upper portions of the leakage tripping mechanism and the N-pole operating mechanism, the residual current operation test circuit is disposed along the space between the leakage tripping device 42 and the N-pole handle structure 22, and the space between the linkage lever 231 and the side walls of the test button 45 and the phase pole module housing, so that the space utilization in the interior is improved. The first torsion spring 46 is mounted on the partition board 5 and is located between the N-pole handle structure 22 and the test button 45, the contact piece 48 is disposed on the other side of the test button 45, preferably, the contact piece 48 is L-shaped, one end of the contact piece extends towards the direction of the test button 45, the other end of the contact piece is close to an inner wall of one side of the phase pole module housing, the contact piece 48 and the first torsion spring 46 are located on two sides of the test button 45 respectively, the first elastic arm 461 of the first torsion spring 46 is in limit fit with the test button 45, preferably, a clamping groove for the first elastic arm 461 of the first torsion spring 46 to pass through is formed in the lower portion of the test button 45, the first elastic arm 461 of the first torsion spring 46 is contacted with or separated from one end of the contact piece 48 by pressing the test button 45, the second elastic arm 462 of the first torsion spring 46 is connected to the circuit board 35 of the reclosing electrode module 3 through a wire, and the wire connected to the second elastic arm 462 of the first torsion spring 46 is disposed around one side of the release 42 far from the push rod 43, preferably, and the second elastic arm 462 of the first torsion spring 46 is connected in series with a test resistor 49. The second torsion spring 47 is installed between the N pole operating mechanism and the N pole incoming terminal 211, the first elastic arm 471 of the second torsion spring 47 is disposed towards the other end of the contact piece 48 to form a second break point, the second elastic arm 472 of the second torsion spring 47 is connected with the N pole incoming terminal 211, preferably, a bending part 473 is disposed in the middle of the first elastic arm 471 of the second torsion spring 47, and the bending part 473 is used for being matched with the linkage lever 231. As shown in fig. 6, when the linkage lever 231 drives the N-pole moving contact 241 to open, the linkage lever 231 swings to the left in the figure, the linkage lever 231 does not press the bending part 473 to close the second break point, at this time, the test button 45 is pressed, the residual current operation test circuit is not turned on, and the leakage tripping mechanism does not operate, and as shown in fig. 7, when the linkage lever 231 drives the N-pole moving contact 241 to close, the linkage lever 231 swings to the right in fig. 7, the bending part 473 is pressed, so that the end of the first elastic arm 471 of the second torsion spring 47 contacts the other end of the contact piece 48, the second break point is closed, at this time, the test button 45 is pressed to close the first break point, the residual current operation test circuit is turned on, and the leakage tripping mechanism operates. Of course, a corresponding acting portion may be provided on the linkage lever 231 in a protruding manner for pressing the second elastic arm 472 of the second torsion spring 47 to achieve the conduction of the second break point, and the contact piece 48 may be provided at other positions of the linkage lever 231.

Referring to fig. 6 and 7, the partition 5 disposed between the L-phase pole module 1 and the N-phase pole module 2 is provided with a rotating shaft for the push rod 43 to rotate and a second limiting boss for connecting with the return spring 44, the partition 5 is provided with a first linkage hole 51, the first linkage hole 51 is used for matching the L-pole operating mechanism 13 with the touch part 43e of the push rod 43, the partition 5 is provided with a second linkage hole 52, the second linkage hole 52 is used for linking the lever 231 and the L-pole operating mechanism 13, and a limiting structure for installing the contact piece 48 can be further disposed on the partition 5.

The reclosing pole module 3 is used for driving automatic opening and closing of the phase pole module, and the reclosing pole module 3 may be disposed on a side close to the L-phase pole module 1 or on a side close to the N-phase pole module 2, in this embodiment, taking the reclosing pole module 3 disposed on a side of the L-phase pole module 1 as an example.

The reclosing pole module 3 comprises a reclosing pole module 3 shell, wherein a driving handle 31, a gear transmission device 32, a tripping driving structure (not shown), a motor 33 and a circuit board 35 are arranged in the reclosing pole module 3 shell, the circuit board 35 is arranged in the reclosing pole module 3 shell and is respectively connected with an L pole incoming line terminal 111 and an N pole incoming line terminal 211 for controlling the circuit board 35 to take power or feed back temperature rise data, the driving handle 31, the gear transmission device 32 and the motor 33 are arranged on the surface of the circuit board 35 and are arranged in a stacked manner, the driving handle 31 is arranged at the upper part of the reclosing pole module shell, the driving handle 31 and the gear transmission device 32 are in matched rotation through a driving connecting rod 34, the gear transmission device 32 is in transmission connection with the motor 33, the motor 33 drives the driving handle 31 through the gear transmission device 32 to realize automatic closing, after a controller of the circuit board 35 receives a closing action signal, the gear transmission device 32 and the driving connecting rod 34 are mutually matched with each other to enable the L pole operating mechanism 13 and the N pole operating mechanism to realize automatic closing, the tripping device is arranged at one side of the circuit board 35, the opening and the automatic opening mechanism is arranged at the outer side of the circuit board 35, for controlling the opening and the opening mechanism is in a wireless connection with the opening and closing mechanism is arranged at one side of the circuit board 35, for realizing the automatic opening and the opening mechanism is in a wireless opening and is in a controlled by the transmission device is in a transmission mode connected with the opening and is connected with the automatic opening mechanism through the circuit board 35, meanwhile, the communication module feeds back the normal working state, the leakage fault, the short circuit fault, the overload fault, the overvoltage and undervoltage and the like of the circuit breaker to the external equipment.

The driving handle 31 is arranged on the upper portion of the reclosing pole module 3, the motor 33 is arranged on the lower portion of the reclosing pole module 3, the gear transmission device 32 is arranged in the middle of the housing of the reclosing pole module 3, one end of the gear transmission device 32 is in transmission connection with the motor 33, the other end of the gear transmission device 32 is connected with the driving handle 31 through the driving connecting rod 34, a tripping driving structure is arranged on one side, facing the circuit board 35, of the gear transmission device 32 and is used for being matched with a locking linkage shaft of the L pole operating mechanism 13, and the tripping driving structure enables the L phase pole module 1 and the N phase pole module 2 to realize opening by pushing the locking linkage shaft of the L pole operating mechanism 13.

As shown in fig. 11, the gear transmission device 32 includes three sequentially engaged first gears 321, second gears 322 and third gears 323, wherein the first gears 321 are engaged with the motor 33 through a worm, one side of the third gears 323, which faces away from the circuit board 35, is provided with a driving connecting rod 34, one end of the driving connecting rod 34 is connected to one side of the third gears 323 as a connecting end, the other end of the driving connecting rod 34 is matched with the third gears 323 as a driving end to drive the driving handle 31 to rotate, one side of the third gears 323, which faces the circuit board 35, is provided with a trip driving structure, the trip driving structure includes a trip driving piece and a driving protrusion, one end of the trip driving piece is rotatably mounted on the housing of the reclosing pole module 3, the other end of the trip driving piece is correspondingly arranged with a latch linkage shaft of the L pole operating mechanism 13, and the driving protrusion is arranged on one side of the third gears 323, which faces the circuit board 35 and is connected in contact with the trip driving piece through rotation, so as to drive the trip driving piece to push the latch linkage shaft of the L pole operating mechanism 13 to unlock the latches 131 and the latches 132 in the L pole operating mechanism 13, thereby completing the trip operation. The tripping driving structure has the advantages of simple and reliable structure and convenience for resetting after tripping.

In connection with fig. 11, an embodiment is provided in which the driving handle 31 is matched with the gear transmission device 32, the driving handle 31 is provided with a protruding handle portion 311, a track groove 36 for being matched with the driving end of the driving connecting rod 34 is arranged below the driving handle 31, along with opening and closing rotation of the third gear 323, the driving connecting rod 34 slides along the track groove 36, the driving end drives the driving handle 31 to rotate by pushing the handle portion 311, when the motor 33 drives the gear transmission device 32 to perform opening and closing rotation, the driving end of the driving connecting rod 34 slides from the inner end of the track groove 36 to the outer end of the track groove 36, closing rotation of the driving handle 31 is realized by pushing the handle portion 311 after the driving end contacts the handle portion 311, when the motor 33 drives the gear transmission device 32 to perform opening and closing rotation, the rotation direction of the third gear 323 is counterclockwise in the figure, the gear transmission device 32 drives the lock catch linkage shaft of the tripping driving structure 13 to act, and the L-phase modules 1 and N phase modules 2 are simultaneously removed from the inner end of the track groove 36 to perform opening and closing rotation of the track groove 36 under the action. The circuit board 35 is provided with a recess for the movement of the driving protrusion of the third gear 323, and the housing of the reclosing pole module 3 and the housing of the L-phase pole module 1 are provided with through holes for the linkage and rotation of the lock catch linkage shaft.

The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims

1. A circuit breaker, comprising phase pole modules arranged in parallel and a reclosing gate pole module (3) for driving the phase pole modules to automatically open and close, characterized in that: the phase pole module is divided into an L phase pole module (1) and an N phase pole module (2) by a partition (5), the L phase pole module (1) comprising an L pole operating mechanism (13), an L pole moving contact (141) of an L pole contact mechanism connected to the L pole operating mechanism (13), and the N phase pole module (2) comprising an N pole operating mechanism, an N pole contact mechanism, and an L pole moving contact (141) of an L pole contact mechanism. A contact mechanism and a leakage protection module, wherein the N-pole operating mechanism comprises a linkage lever (231), one end of the linkage lever (231) passes through a partition (5) and is linked to an L-pole operating mechanism (13), and the other end of the linkage lever (231) is connected to an N-pole moving contact (241) of an N-pole contact mechanism, and under the action of the linkage lever (231), the opening and closing of the N-phase pole module (2) is achieved by the L-pole operating mechanism (13) driving the N-pole operating mechanism to drive the N-pole contact mechanism;

The leakage protection module comprises a zero-sequence transformer (41) and a leakage tripping mechanism. When the zero-sequence transformer (41) detects leakage current, the reclosing gate module (3) drives the leakage tripping mechanism to operate and open the phase pole module;

The leakage protection module also includes a test button (45) and a residual current action test circuit, wherein the residual current action test circuit has two on-off points, wherein one on-off point is used as a first on-off point and is controlled to be opened or closed by the test button (45), and the other on-off point is used as a second on-off point, wherein the second on-off point is located between the N-pole operating mechanism and the N-pole incoming line terminal (211) in the N-phase pole module, and is controlled to be opened or closed by the swing of a linkage lever (231), and the residual current action test circuit cannot be turned on if either the first on-off point or the second on-off point is disconnected.

2. A circuit breaker according to claim 1, characterized in that: the residual current operation test circuit comprises a first torsion spring (46), a second torsion spring (47) and a contact piece (48), the first torsion spring (46) is installed on one side of the test button (45), the first elastic arm (461) of the first torsion spring (46) cooperates with one end of the contact piece (48) to form a first on-off point, the test button (45) cooperates with the first elastic arm (461) of the first torsion spring (46), and the first on-off point is opened and closed by pressing the test button (45), and the second elastic arm (462) of the first torsion spring (46) is opened and closed. ) is connected to the circuit board (35) of the reclosing gate module (3) through a wire; the second torsion spring (47) is installed on one side of the N-pole operating mechanism, and the end of the first elastic arm (471) of the second torsion spring (47) cooperates with the other end of the contact piece (48) to form a second on-off point. When the N-pole contact mechanism is opened and closed, the middle part of the first elastic arm (471) of the second torsion spring (47) is pressed by the swinging action of the linkage lever (231) to open and close the second on-off point, and the second elastic arm (472) of the second torsion spring (47) is connected to the N-pole incoming terminal (211) in the N-phase pole module (2) through a wire.

3. A circuit breaker according to claim 2, characterized in that a bending portion (473) is provided in the middle of the first elastic arm (471) of the second torsion spring (47), and the bending portion (473) is used to cooperate with the linkage lever (231) to realize the closing or opening of the second on-off point.

4. A circuit breaker according to claim 1, characterized in that: the N-phase pole module (2) further comprises an N-pole incoming line terminal (211), an N-pole outgoing line terminal (212) and an N-pole handle structure (22), the N-pole incoming line terminal (211) and the N-pole outgoing line terminal (212) are respectively arranged on both sides of the N-phase pole module (2), the N-pole handle structure (22) and the test button (45) are arranged on the upper part of the N-phase pole module (2), the zero-sequence mutual inductor (41) is arranged on a side close to the N-pole outgoing line terminal (212), and the zero-sequence mutual inductor (41) is located at the lower part of the N-phase pole module (2), and the leakage The electric tripping mechanism is arranged in the middle of the N-phase pole module (2) and between the N-pole handle structure (22) and the zero-sequence transformer (41); an N-pole operating mechanism and an N-pole contact mechanism are arranged between the leakage tripping mechanism and the N-pole incoming terminal (211); an N-pole moving contact (241) of the N-pole contact mechanism is connected to a linkage lever (231) of the N-pole operating mechanism; an N-pole static contact (242) of the N-pole contact mechanism is fixed to one side of the zero-sequence transformer (41) and arranged opposite to the N-pole moving contact (241); and the residual current action circuit loop is arranged around the leakage tripping mechanism and the upper part of the N-pole operating mechanism.

5. A circuit breaker according to claim 4, characterized in that: the N-pole operating mechanism also includes a tension spring (232), one end of the tension spring (232) is connected to the N-pole moving contact (241), and the other end of the tension spring (232) is fixedly installed and connected to the circuit board (35) of the reclosing gate module (3) through a wire.

6. A circuit breaker according to any one of claims 1 to 5, characterized in that: the leakage release mechanism comprises a leakage release (42), a push rod (43) and a reset spring (44) driving the push rod (43); the leakage release (42) is mounted on the partition (5) and connected to the circuit board (35) of the reclosing gate module (3); the push rod (43) is rotatably mounted on the partition (5); an actuating portion (43d) matched with the top rod of the leakage release (42) and a touch portion (43e) passing through the partition (5) and matched with the L-pole operating mechanism (13) are provided on the push rod (43); when leakage occurs, the top rod of the leakage release (42) drives the push rod (43) to rotate to overcome the elastic force of the reset spring (44), so that the touch portion (43e) pushes the L-pole operating mechanism (13) to operate and, under the linkage action of the linkage lever (231), the phase pole module is opened.

7. A circuit breaker according to claim 6, characterized in that: a rotating shaft for rotatably mounting the push rod (43) and a second limiting boss for connecting with the reset spring (44) are provided on the partition (5), a first linkage hole (51) is provided on the partition (5), and the first linkage hole (51) is used for the L-pole operating mechanism (13) to cooperate with the touch part (43e), and a second linkage hole (52) is provided on the partition (5), and the second linkage hole (52) is used for the linkage between the linkage lever (231) and the L-pole operating mechanism (13).

8. A circuit breaker according to claim 6, characterized in that: the push rod (43) includes a push rod shaft (43a) for rotatably mounted on the partition (5), a first limiting boss (43b) for cooperating with a reset spring (44) is protruding above the push rod shaft (43a), a step-shaped push rod plate (43c) is extended from one side wall of the push rod shaft (43a), an actuating portion (43d) is extended upward along the axial direction of the push rod shaft (43a) at an end corner of the push rod plate (43c) away from the push rod shaft (43a), and a touch portion (43e) is extended downward along the axial direction of the push rod shaft (43a) at the other end corner of the push rod plate (43c) away from the push rod shaft (43a).

9. A circuit breaker according to claim 1, characterized in that: the L-phase pole module (1) comprises an L-pole incoming terminal (111) and an L-pole outgoing terminal (112) respectively arranged on both sides of the L-phase pole module (1), and an L-pole handle structure (12), an L-pole operating mechanism (13), an L-pole contact mechanism, a short-circuit protection mechanism (16), an arc extinguishing chamber (15) and an overload release device (17) are arranged between the L-pole incoming terminal (111) and the L-pole outgoing terminal (112); the L-pole handle structure (12) is arranged on the upper part of the L-phase pole module (1), the L-pole operating mechanism (13) is arranged on one side of the L-pole handle structure (12), and the L-pole handle structure (12) and the L-pole operating mechanism (13) are arranged on the upper part of the L-phase pole module (1), and the L-pole handle structure (12) and the L-pole operating mechanism (13) are arranged on the upper part of the L-phase pole module (1). The operating mechanism (13) is linked via a connecting rod (133); the L-pole operating mechanism (13) and the arc extinguishing chamber (15) are arranged at the lower part of the L-phase pole module (1); the short-circuit protection mechanism (16) is arranged between the L-pole handle structure (12) and the arc extinguishing chamber (15), and the short-circuit protection mechanism (16) is opposite to the L-pole operating mechanism (13); the L-pole moving contact (141) of the L-pole contact mechanism is connected to the L-pole operating mechanism (13); the L-pole static contact (142) of the L-pole contact mechanism is fixedly arranged on one side of the arc extinguishing chamber (15) and is arranged opposite to the L-pole moving contact (141); and the overload release device (17) is arranged between the L-pole incoming line terminal (111) and the L-pole operating mechanism (13).

10. A circuit breaker according to claim 9, characterized in that: the L-pole operating mechanism (13) comprises a connecting rod (133), a lock (131), a tripping latch (132) and a contact support, the contact support is pivotally mounted in the L-phase pole module (1) and rotates around a main axis (135), the tripping latch (132) and the lock (131) are pivotally mounted on the contact support and form a snap connection, one end of the connecting rod (133) is connected to the L-pole handle structure (12), the other end of the connecting rod (133) is connected to the tripping latch (132), and the L-pole moving contact (141) is elastically fixedly mounted on the contact support.

11. A circuit breaker according to claim 10, characterized in that: a rotating pair (131a) is provided at the upper part of the lock catch (131), and the rotating pair (131a) is used to rotatably install the lock catch (131) on the contact support, a lock catch portion (131b) is provided on one side of the rotating pair (131a), and the lock catch portion (131b) is used to cooperate with the jump catch (132) to form a buckle connection, and a linkage shaft hole (131c) is provided on the other side of the rotating pair (131a), and a lock linkage shaft is installed in the linkage shaft hole (131c), and a lock linkage shaft is installed at the lower part of the lock catch (131). A striking part (131d) and a trigger part (131e) are provided, wherein the striking part (131d) is used to cooperate with a short-circuit protection mechanism (16), and the trigger part (131e) passes through a partition (5) and is used to cooperate with a leakage tripping mechanism; a tripping hook (134) is also provided at the lower part of the lock buckle (131), and the tripping hook (134) is used to cooperate with an overload tripping device (17); and an avoidance notch (131f) for avoiding a main shaft (135) is provided on the lock buckle (131), and the avoidance notch (131f) is located between the lock buckle part (131b) and the striking part (131d).

12. A circuit breaker according to claim 1, characterized in that: the reclosing gate module (3) comprises a driving handle (31), a gear transmission device (32), a tripping drive structure, a motor (33), and a circuit board (35); the driving handle (31), the gear transmission device (32) and the motor (33) are arranged on the surface of the circuit board (35); the driving handle (31) and the gear transmission device (32) are rotated in coordination with each other through a driving connecting rod (34), the gear transmission device (32) is connected to the motor (33) through a driving connection rod (34), and the motor (33) is connected to the driving connection rod (34). The gear transmission device (32) drives the driving connecting rod (34) to drive the driving handle (31) to realize automatic closing; the tripping driving structure is arranged on the side of the gear transmission device (32) facing the circuit board (35), and the tripping driving structure includes a driving boss arranged on the gear transmission device (32) and a tripping driving member rotatably mounted on the housing of the reclosing gate module (3), one end of the tripping driving member is rotatably mounted on the housing of the reclosing gate module (3), and the other end of the tripping driving member is arranged corresponding to the locking linkage shaft of the L-pole operating mechanism (13).