CN117612911B - Miniature circuit breaker based on internet of things communication and line fault analysis function - Google Patents
Miniature circuit breaker based on internet of things communication and line fault analysis function Download PDFInfo
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- CN117612911B CN117612911B CN202311843798.1A CN202311843798A CN117612911B CN 117612911 B CN117612911 B CN 117612911B CN 202311843798 A CN202311843798 A CN 202311843798A CN 117612911 B CN117612911 B CN 117612911B
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- 238000004891 communication Methods 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 57
- 229910052751 metal Inorganic materials 0.000 claims abstract description 57
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- 230000007246 mechanism Effects 0.000 claims description 30
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000032683 aging Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 17
- 238000010168 coupling process Methods 0.000 description 17
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- VAYOSLLFUXYJDT-RDTXWAMCSA-N Lysergic acid diethylamide Chemical class C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N(CC)CC)C2)=C3C2=CNC3=C1 VAYOSLLFUXYJDT-RDTXWAMCSA-N 0.000 description 3
- 238000005760 Tripper reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/121—Protection of release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
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- Breakers (AREA)
Abstract
本发明属于微型断路器技术领域，提到了一种基于物联网通讯和线路故障分析功能的微型断路器。针对现有微型断路器存在弹簧老化的问题。本发明提供一种基于物联网通讯和线路故障分析功能的微型断路器，包括有壳体，所述壳体内固接有第二安装架，所述第二安装架滑动连接有第一触发杆，所述壳体内转动连接有转动板，所述壳体内设置有灭弧器，所述灭弧器设置有金属板，所述开关转动连接有与所述金属筒之间设置有拉簧的第二传动架。本发明通过设置第一触发杆，使第一触发杆向下移动，从而使第一触发杆挤压转动板转动，进而将电路断开进行保护，防止装置无法正常将电路断开而在短路的情况下持续产生热量导致起火。
The present invention belongs to the technical field of miniature circuit breakers, and mentions a miniature circuit breaker based on Internet of Things communication and line fault analysis functions. The problem of spring aging exists in existing miniature circuit breakers. The present invention provides a miniature circuit breaker based on Internet of Things communication and line fault analysis functions, including a shell, a second mounting frame fixedly connected in the shell, a first trigger rod slidably connected to the second mounting frame, a rotating plate rotatably connected in the shell, an arc extinguisher is arranged in the shell, the arc extinguisher is arranged with a metal plate, and the switch is rotatably connected to a second transmission frame with a tension spring arranged between the metal cylinder. The present invention sets a first trigger rod, so that the first trigger rod moves downward, so that the first trigger rod squeezes the rotating plate to rotate, and then disconnects the circuit for protection, preventing the device from failing to disconnect the circuit normally and continuously generating heat in the case of a short circuit, causing a fire.
Description
Technical Field
The invention belongs to the technical field of miniature circuit breakers, and provides a miniature circuit breaker based on Internet of things communication and line fault analysis functions.
Background
The miniature circuit breaker is a terminal protection electrical apparatus which is most widely used in a building electrical terminal distribution device, the miniature circuit breaker is composed of an operating mechanism, contacts, a protection device (various trippers), an arc extinguishing system and the like, a main contact of the miniature circuit breaker is manually operated or electrically switched on, after the main contact is closed, a free tripping mechanism locks the main contact on a switching-on position, a coil of an overcurrent tripper and a thermal element of a thermal trip are connected with a main circuit in series, when a circuit is short-circuited or severely overloaded, an armature of the overcurrent tripper is attracted to enable the free tripping mechanism to work, the main contact breaks the main circuit, when the circuit is overloaded, the thermal element of the thermal trip is heated to enable a bimetallic strip to bend so as to push the free tripping mechanism to work, and the miniature circuit breaker which can be connected with the Internet of things is gradually generated along with the development of the technical field of the miniature circuit breaker, so that the miniature circuit breaker can be remotely controlled to switch on and off, and the magnitude of parameters such as current and voltage flowing through the miniature circuit breaker can be monitored in real time, and meanwhile, a plurality of sensors are arranged in the miniature circuit breaker, and the fault analysis function of a circuit can be realized.
In the existing miniature circuit breaker, the power sources of protection devices (various trippers) are mostly elastic pieces (various springs, tension springs, torsion springs and the like), when the miniature circuit breaker is switched on, the elastic pieces are in a power storage state, and along with the increase of service time, the elastic pieces can age due to long-time power storage, so that the protection devices (various trippers) cannot normally work, for example, contacts cannot be completely separated, when the contact separation distance is not far enough, the phenomenon that electric current breaks down air to generate electric arcs can continuously occur due to voltage difference between the contacts, the electric arcs have extremely high temperature, the temperature between the contacts is too high due to the fact that the electric arcs continuously occur for a long time, even the miniature circuit breaker fires, and serious consequences such as fire are caused.
Disclosure of Invention
In order to overcome the defects in the background art, the invention provides a miniature circuit breaker based on the functions of communication of the Internet of things and line fault analysis.
The technical proposal is as follows: the miniature circuit breaker based on thing networking communication and circuit fault analysis function, which comprises a housin, casing demountable installation has the cap, the rigid coupling has metal cylinder and second mounting bracket in the casing, metal cylinder sliding connection have with be provided with the trigger piece of spring between it, second mounting bracket sliding connection have with be provided with the first trigger lever of spring between it, the outside of metal cylinder is around being equipped with the coil of being connected with external circuit, the casing rotation is connected with the rotor plate, be provided with in the casing with the arc extinguisher that the coil is connected, the arc extinguisher is provided with the metal sheet, the metal sheet rotation be connected with be provided with the first transmission frame of spring between the rotor plate, first transmission frame with the casing cooperation, be provided with in the casing with be connected with the bimetallic strip of wire between the metal sheet, bimetallic strip rigid coupling have with rotor plate complex second trigger lever, the casing rotation is connected with the switch that runs through it, the switch rotation is connected with the extension spring between the metal cylinder be provided with the second transmission frame, the first transmission frame with first transmission frame, first transmission frame with the first transmission plate and the first transmission plate are all set up.
In addition, as a further preference, first emergency mechanism is including first mounting bracket, first mounting bracket rigid coupling in the inboard of casing, first mounting bracket rotates and is connected with first axis of rotation, first axis of rotation rigid coupling has the ratchet, first mounting bracket rigid coupling has the spacing ring, the spacing ring is provided with the breach, first axis of rotation is kept away from the one end rigid coupling of first mounting bracket has the limiting plate of symmetric distribution, the symmetric distribution the limiting plate all with the spacing ring rotates to be connected, the symmetric distribution common sliding connection has first slide bar between the limiting plate, first slide bar rigid coupling has the installation pole, the installation pole is kept away from one side rigid coupling of first slide bar has the pouring weight, the pouring weight with first trigger lever cooperation, the second mounting bracket is provided with and is used for making first axis of rotation and the emergent subassembly of part rotation on it is provided with the breach, the casing is provided with and is used for preventing to close by force the locking subassembly of first axis of rotation and part rotation fixed angle on.
In addition, as a further preference, the emergency assembly comprises a second sliding rod, the second sliding rod is slidably connected to one side, close to the weight, of the second mounting frame, the second sliding rod is slidably connected with the weight and penetrates through the weight, a fixed rod is fixedly connected to one side, close to the ratchet, of the trigger block, the fixed rod is rotatably connected with a pawl matched with the ratchet, a torsion spring is arranged between the pawl and the fixed rod, and a reset mechanism for resetting the first rotating shaft and parts on the first rotating shaft is arranged on the housing.
In addition, as a further preference, the locating component includes a locating ring, the locating ring rigid coupling in the ratchet is kept away from one side of spacing ring, first mounting bracket rigid coupling has the first fixed shell that runs through it, one side sliding connection that first fixed shell is close to the locating ring has first movable rod, first movable rod with be provided with the spring between the first fixed shell, first movable rod with the locating ring cooperation.
Furthermore, as a further preference, the positioning ring is provided with grooves which are uniformly distributed in the circumferential direction, and the number of the grooves on the positioning ring is equal to the number of teeth of the ratchet wheel.
In addition, as a further preference, the locking assembly comprises a second fixed shell, the second fixed shell is fixedly connected to the inner side of the shell, a second moving rod is slidably connected to one side, close to the weight, of the second fixed shell, a spring is arranged between the second moving rod and the second fixed shell, and the second moving rod is matched with the weight.
In addition, as a further preference, the reset mechanism comprises a third mounting frame, the third mounting frame is fixedly connected to the inner side of the shell, a gear box is fixedly connected to the third mounting frame, a first friction disc is fixedly connected to an input shaft of the gear box, a second rotating shaft is fixedly connected to an output shaft of the gear box, the second rotating shaft and the first rotating shaft are transmitted through a gear set, and a transmission assembly used for enabling the switch to be transmitted between the first friction disc is arranged on the shell.
In addition, as a further preference, the transmission assembly is including the fixed plate, the fixed plate rigid coupling in the casing, the fixed plate rotates and is connected with the third fixed shell, the third fixed shell with pass through gear ring transmission between the switch, the third fixed shell is close to one side spline connection of first friction disc has the third movable rod, the third movable rod with be provided with the extension spring between the third fixed shell, the third movable rod rigid coupling have with first friction disc complex second friction disc, the third mounting bracket is provided with and is used for making first friction disc with second friction disc complex clutch assembly.
In addition, as a further preference, the clutch part is including the carriage, carriage sliding connection in the third mounting bracket, the carriage with third movable rod rotates to be connected, the carriage is kept away from one side rigid coupling of third movable rod has the stopper, the switch is close to one side rigid coupling of stopper has the fixed block, sliding connection has the sliding block in the fixed block, the sliding block with be provided with the spring between the fixed block, the sliding block is close to one side rigid coupling of stopper has the spring telescopic link, the spring telescopic link with the stopper cooperation.
In addition, as further preferred, still including being used for preventing the switch is by the emergent mechanism of second of withholding, the emergent mechanism of second set up in the casing, the emergent mechanism of second is including the fourth fixed shell, the fourth fixed shell rigid coupling in the casing, the fourth fixed shell be close to one side sliding connection of bimetal strip has the movable block, the movable block with bimetal strip cooperation, be provided with the spring and annotate between the movable block with annotate liquid, the switch is provided with the cavity, sliding connection has the fourth movable rod in the cavity of switch, the fourth movable rod rigid coupling has the pin, the pin with the switch cooperation, annotate liquid in the cavity of switch, the fourth fixed shell with pass through the hose intercommunication between the cavity of switch.
The beneficial effects are that: according to the invention, the first trigger rod is arranged, so that the spring and the tension spring for disconnecting the circuit in the device are aged, and when the device cannot work normally, the first trigger rod moves downwards, so that the first trigger rod extrudes the rotating plate to rotate, the circuit is disconnected and protected, and the device cannot normally disconnect the circuit and continuously generates heat under the condition of short circuit to cause fire.
The first moving rod is used for extruding the positioning ring, so that each rotation of the first rotating shaft and the upper part of the first rotating shaft can be performed according to a fixed angle, and meanwhile, the first rotating shaft and the upper part of the first rotating shaft are prevented from being contacted with the ratchet wheel to rotate when the pawl is reset.
Through the second movable rod in the locking assembly, when the device triggers an emergency disconnection circuit due to the aging of the spring and the tension spring, the second movable rod clamps the weight, the weight clamps the rotating plate through the first trigger rod, and the switch cannot be closed, so that the device which cannot normally work is prevented from continuing to work due to the fact that the switch is closed again, and accidents are prevented.
Through setting up canceling release mechanical system, when the circuit to the short circuit in this device normal operating is disconnected, first axis of rotation and last part can resume the normal position when closing a floodgate, can not trigger emergent protection because of the device breaks the short circuit many times.
By arranging the second emergency mechanism, the stop lever pushes away a wood stick and the like which are propped against the switch, so that the switch can work normally, and the circuit is prevented from being propped against the switch and not tripping due to overload.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the interior of the present invention;
FIG. 3 is a perspective cross-sectional view of the housing of the present invention;
FIG. 4 is a perspective cross-sectional view of a metal cylinder according to the present invention;
FIG. 5 is a perspective cross-sectional view of the first emergency mechanism, reset mechanism and locking assembly of the present invention;
FIG. 6 is a schematic perspective view of an emergency assembly of the present invention;
FIG. 7 is a schematic perspective view of the fixing rod, pawl and other parts of the present invention;
FIG. 8 is a perspective exploded view of the first mount and its upper parts of the present invention;
FIG. 9 is a schematic perspective view of a positioning assembly according to the present invention;
FIG. 10 is a schematic perspective view of a reset mechanism according to the present invention;
FIG. 11 is a perspective cross-sectional view of the transmission assembly of the present invention;
FIG. 12 is a schematic perspective view of a clutch assembly according to the present invention;
FIG. 13 is a schematic perspective view of a second emergency mechanism according to the present invention;
fig. 14 is a schematic view of a part of a second emergency mechanism according to the present invention.
Marked in the figure as: the device comprises a 1-shell, a 2-shell cover, a 3-metal cylinder, a 4-second mounting frame, a 5-trigger block, a 6-first trigger rod, a 7-coil, a 8-rotating plate, a 9-arc extinguisher, a 10-metal plate, a 11-first transmission frame, a 12-bimetallic strip, a 13-second trigger rod, a 14-switch, a 15-second transmission frame, a 16-first mounting frame, a 17-first rotating shaft, a 18-ratchet wheel, a 19-limiting ring, a 20-limiting plate, a 21-mounting rod, a 22-weight, a 23-first sliding rod, a 24-second sliding rod, a 25-fixed rod, a 26-pawl, a 27-fixed ring, a 28-first fixed shell, a 29-first moving rod, a 30-second fixed shell, a 31-second moving rod, a 32-third mounting frame, a 33-gearbox, a 34-first friction disc, a 35-second rotating shaft, a 36-fixed plate, a 37-third fixed shell, a 38-third moving rod, a 39-second friction disc, a 40-sliding frame, a 41-limiting block, a 42-fixed block, a 43-fourth sliding block, a 45-fourth sliding block, a 46 and a fourth sliding block.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description, but does not limit the scope of protection and the application of the invention.
Example 1: the miniature circuit breaker based on the communication of the Internet of things and the analysis function of line faults, as shown in fig. 1-6, comprises a shell 1, a shell cover 2 is detachably arranged at the front side of the shell 1, a metal cylinder 3 with a big upper side opening and a small lower side opening and a second mounting frame 4 are fixedly connected at the rear side in the shell 1, the metal cylinder 3 is used for enhancing the magnetic field formed by a coil 7, thereby enhancing the attraction to a trigger block 5, the trigger block 5 is slidingly connected in the metal cylinder 3, the trigger block 5 consists of a cylindrical block at the upper side and a cylindrical rod at the lower side, a spring is arranged between the lower side of the cylindrical block part of the trigger block 5 and the metal cylinder 3 and used for resetting the trigger block 5 and parts thereon, The lower side of the cylindrical rod part of the trigger block 5 is in extrusion fit with the rotating plate 8, when the trigger block 5 moves downwards, the left part of the upper side of the rotating plate 8 is extruded, so that the rotating plate 8 rotates anticlockwise from the front view direction, the second mounting frame 4 is connected with the first trigger rod 6 capable of sliding up and down in a sliding manner, a spring is arranged between the first trigger rod 6 and the second mounting frame 4 and is used for resetting the first trigger rod 6, the first trigger rod 6 is in extrusion fit with the rotating plate 8, when the first trigger rod 6 moves downwards, the left part of the upper side of the rotating plate 8 is extruded, the rotating plate 8 rotates anticlockwise from the front view direction, the outer side of the metal cylinder 3 is wound with a coil 7 connected with an external circuit, The shell 1 is rotationally connected with a rotating plate 8, an arc extinguisher 9 connected with a coil 7 is arranged in the shell 1, the arc extinguisher 9 consists of an arc extinguishing grid at the upper side, an elastic metal sheet bent at the lower left side and a metal sheet bent at the lower right side, a metal plate 10 penetrating the elastic metal sheet at the lower left side of the arc extinguisher 9 is arranged at the lower side of the elastic metal sheet at the lower left side, the metal plate 10 is in extrusion fit with the rotating plate 8, when the rotating plate 8 rotates anticlockwise from the front view direction, the left side of the rotating plate 8 extrudes the right side of the metal plate 10, the metal plate 10 rotates clockwise, the metal plate 10 is separated from the metal sheet bent at the lower side of the arc extinguisher 9, the middle part of the metal plate 10 is rotationally connected with a first transmission frame 11, A spring is arranged between the first transmission frame 11 and the rotating plate 8, the spring is in a compression state at the moment of closing state, a convex column is fixedly connected at the rear side in the shell 1, the first transmission frame 11 rotates around the convex column, the first transmission frame 11 is in extrusion fit with the rotating plate 8, when the rotating plate 8 rotates anticlockwise, the metal plate 10 rotates clockwise and drives the first transmission frame 11 to rotate anticlockwise, the first transmission frame 11 rotates around the joint of the first transmission frame 11 and the metal plate 10, the convex column in the shell 1 is taken as a fulcrum to rotate, and simultaneously slides relative to the convex column in the shell 1, at the moment, the matching position of the first transmission frame 11 and the rotating plate 8 slides, when the rotating plate 8 rotates clockwise, The rotating plate 8 extrudes the right side of the first transmission frame 11, so that the first transmission frame 11 transmits the metal plate 10 to rotate anticlockwise until the metal plate 10 contacts with the arc extinguisher 9, a bimetallic strip 12 which is connected with an external circuit and is connected with a wire between the metal plate 10 is arranged in the shell 1, the bimetallic strip 12 consists of metals with different expansion rates at the upper side and the lower side, the thermal expansion variation of the upper side metal is larger than that of the lower side metal, the right side of the bimetallic strip 12 is fixedly connected with a C-shaped second trigger rod 13, the second trigger rod 13 is matched with the rotating plate 8 in an extrusion way, when the second trigger rod 13 moves downwards, the left part of the upper side of the rotating plate 8 is extruded, The rotating plate 8 is rotated anticlockwise from the front view direction, the shell 1 is rotationally connected with a switch 14 penetrating the rotating plate, the eccentric part of the rotation center of the switch 14 is rotationally connected with a second transmission frame 15, a tension spring is arranged between the second transmission frame 15 and the upper side of the metal cylinder 3, the tension spring is in a stretching state at the moment of closing state, the second transmission frame 15 is in extrusion fit with the rotating plate 8, when the rotating plate 8 rotates anticlockwise from the front view direction, the bevel edge on the right side of the rotating plate 8 extrudes the second transmission frame 15, the second transmission frame 15 rotates anticlockwise from the front view direction around the rotation connecting part of the second transmission frame 15 and the switch 14, when the straight line of the second transmission frame 15 is crossed the rotation axis of the switch 14 from the front view direction, Under the action of a tension spring between the metal cylinder 3 and the second transmission frame 15, the second transmission frame 15 moves to the left upper side, so that the second transmission frame 15 drives the switch 14 and the rotating plate 8 to rotate, and a first emergency mechanism for coping with aging of the spring and the tension spring in the device is arranged in the shell 1.
As shown in fig. 3 and 5-8, the first emergency mechanism comprises a first mounting frame 16, the first mounting frame 16 is composed of a straight rod on the left side and an n-shaped rod on the right side, the first mounting frame 16 is fixedly connected to the rear side in the shell 1, a first rotating shaft 17 is rotationally connected to the right side of the straight rod part of the first mounting frame 16, a ratchet 18 penetrating through the first rotating shaft 17 is fixedly connected to the middle part of the first rotating shaft 17, a limiting ring 19 is fixedly connected to the right side of the n-shaped rod part of the first mounting frame 16, a notch is formed in the lower side of the limiting ring 19 and is used for enabling a first sliding rod 23 to pass through, two semicircular limiting plates 20 which are vertically symmetrically distributed are fixedly connected to the right side of the first rotating shaft 17 and are rotationally connected with the limiting ring 19, a first sliding rod 23 is fixedly connected to the right side of the first sliding rod 23, a mounting frame 21 is fixedly connected to the lower side of the mounting rod 21, a weight 22 is fixedly connected to the lower side of the first triggering rod 6, the weight 22 is in extrusion fit with the first triggering rod 6, when the weight 22 falls down, the first triggering rod 6 is extruded to move downwards, a limiting ring 19 is fixedly connected to the right side of the limiting ring 20, two semicircular limiting plates 20 are vertically symmetrically distributed to the limiting plates 20, and the first rotating component is arranged on the first rotating shaft and the first rotating shaft 17, and the first rotating component is aligned to the first rotating component is arranged on the first rotating shaft and the first rotating component and is in the first rotating component and is used for preventing the first rotating component and is arranged.
As shown in fig. 5-7, the emergency assembly comprises a second sliding rod 24, the second sliding rod 24 is slidably connected to the upper side of the second mounting frame 4, the second sliding rod 24 is slidably connected with the weight 22 and penetrates through the weight, an L-shaped fixing rod 25 is fixedly connected to the rear side of the trigger block 5, a pawl 26 which is in press fit with the ratchet wheel 18 is rotatably connected to the vertical portion of the fixing rod 25, a pointed protrusion for limiting the pawl 26 is arranged on the rear side of the vertical portion of the fixing rod 25, two torsion springs which are distributed symmetrically left and right are arranged between the pawl 26 and the fixing rod 25, the torsion springs are used for resetting the pawl 26, and a reset mechanism for resetting the first rotating shaft 17 and parts thereon is arranged on the housing 1.
As shown in fig. 8 and 9, the positioning assembly includes a positioning ring 27, the positioning ring 27 is fixedly connected to the left side of the ratchet 18, the positioning ring 27 is provided with eight grooves uniformly distributed in the circumferential direction, the eight grooves take 45 ° as a unit when the first rotating shaft 17 and parts thereon rotate, and the number of the grooves on the positioning ring 27 is equal to the number of teeth of the ratchet 18, so that when the ratchet 18 rotates, each tooth is in contact with the pawl 26 and is located at the same position, a first fixing shell 28 penetrating the first fixing shell is fixedly connected to the left side of the first mounting frame 16, a first moving rod 29 is connected to the right side of the first fixing shell 28 in a sliding manner, a spring is arranged between the first moving rod 29 and the first fixing shell 28, the spring is used for providing power for the first moving rod 29 to squeeze the positioning ring 27, the first moving rod 29 is in pressing fit with the positioning ring 27, and the first moving rod 29 moves rightwards to squeeze the positioning ring 27, so that each time the positioning ring 27 rotates 45 °.
As shown in fig. 3 and 5, the locking assembly includes a second fixed shell 30, the second fixed shell 30 is fixedly connected to the rear side in the housing 1, the second moving rod 31 is slidingly connected to the front side of the second fixed shell 30, an upward inclined surface is provided on the front side of the second moving rod 31, a spring is provided between the second moving rod 31 and the second fixed shell 30, the spring is used for resetting the second moving rod 31, the second moving rod 31 is in limit fit with the weight 22, when the weight 22 falls, the second moving rod 31 is pressed to move backwards, after the falling of the weight 22 stops, the second moving rod 31 is reset to lock the weight, so that the first trigger rod 6 is prevented from being forced to jack up the weight 22 when the spring fails.
As shown in fig. 3, 5 and 10, the reset mechanism includes a T-shaped third mounting frame 32, the third mounting frame 32 is fixedly connected to the right side in the housing 1, a gear box 33 is fixedly connected to the left side of the third mounting frame 32, the gear box 33 is used for changing the rotation speed and rotation direction of the first friction disk 34 input, so that the second rotation shaft 35 drives the first rotation shaft 17 to rotate at a proper rotation speed, the first friction disk 34 is fixedly connected to the front lower side of the gear box 33, the second rotation shaft 35 is fixedly connected to the right upper side of the gear box 33, the left side of the second rotation shaft 35 is driven with the first rotation shaft 17 through a gear set, and the housing 1 is provided with a driving assembly for driving the switch 14 and the first friction disk 34.
As shown in fig. 10 and 11, the transmission assembly includes a fixing plate 36, the fixing plate 36 is fixedly connected to the right side in the housing 1, a third fixing shell 37 is rotatably connected to the left side of the fixing plate 36, the third fixing shell 37 and the switch 14 are transmitted through a gear ring, a third moving rod 38 is connected to the rear side spline of the third fixing shell 37, a tension spring is arranged between the third moving rod 38 and the third fixing shell 37, the tension spring is used for resetting the third fixing shell 37 and the upper part thereof, a second friction disc 39 matched with the first friction disc 34 is fixedly connected to the rear side of the third moving rod 38, the surfaces of the first friction disc 34 and the second friction disc 39 are made of materials with high friction coefficients, and a clutch component for friction transmission matching of the first friction disc 34 and the second friction disc 39 is arranged on the third mounting frame 32.
As shown in fig. 10-12, the clutch component includes an L-shaped sliding frame 40, the sliding frame 40 is slidably connected to the front side of the third mounting frame 32, the left side of the horizontal portion of the sliding frame 40 is rotatably connected to the third moving rod 38, the upper side of the vertical portion of the sliding frame 40 is fixedly connected with a limiting block 41, the limiting block 41 is an arc-shaped block, the front portions of the left side and the right side are both provided with inclined planes, the left side is also provided with an arc-shaped surface, the rear side of the switch 14 is fixedly connected with a fixed block 42, the sliding block 43 is slidably connected in the fixed block 42, a spring is arranged between the sliding block 43 and the fixed block 42, the spring is used for resetting the sliding block 43, the rear side of the sliding block 43 is fixedly connected with a spring telescopic rod 44, and the spring telescopic rod 44 is in friction extrusion fit with the arc-shaped surface on the left side of the limiting block 41, the arc-shaped surface on the upper side, the two inclined planes on the front side, and a plane.
When the device is used, the device is connected into a circuit, then the switch 14 is pushed upwards to connect the circuit, when the circuit is in short circuit, the current flowing through the coil 7 suddenly increases, the generated magnetic field is strong, the trigger block 5 is attracted to move downwards, the trigger block 5 pushes the left side of the rotating plate 8, the rotating plate 8 presses down the metal plate 10 to separate the metal plate 10 from the right side of the arc extinguisher 9, the circuit is disconnected, at the moment, the transmission frame 15 rotates anticlockwise from the front view direction, then the transmission frame 15 is pulled to the left upper side by an adjacent tension spring, the transmission frame 15 pulls the rotating plate 8 to rotate anticlockwise, the switch 14 is pulled to rotate clockwise, when the circuit is overloaded, the bimetallic strip 12 is heated to bend, the second trigger rod 13 is driven to move downwards, so that the rotating plate 8 rotates, the circuit is disconnected, in the process of circuit disconnection (commonly called trip), the switch 14 rotates clockwise from the front view, the fixed block 42 is driven to rotate, the upper part of the rotating plate is driven, the telescopic end of the telescopic rod 44 is extruded by the left side of the limit block 41, the telescopic rod 44 is pushed by the left side of the limit block 41, the telescopic rod 44 is driven by the left side of the adjacent tension spring, the telescopic rod 44 is driven to move to the left side of the adjacent tension spring 44, and then the telescopic rod is compressed to the arc-shaped block 44 moves downwards along the arc-shaped limit block 44, and the arc-shaped telescopic rod is correspondingly moved to the arc-shaped spring 44, and then the arc-shaped rotary rod 44 moves downwards to the adjacent to the arc-shaped limit block 44 is correspondingly moved to the arc-shaped spring 44.
In the use, when the spring between the rotating plate 8 and the first transmission frame 11 and the tension spring between the metal cylinder 3 and the second transmission frame 15 age due to long-time power accumulation, if short circuit occurs at this time, the trigger block 5 pushes the rotating plate 8 to rotate, but because the spring between the rotating plate 8 and the first transmission frame 11 and the tension spring between the metal cylinder 3 and the second transmission frame 15 age, the rotating plate 8 can not normally rotate the metal plate 10 to be separated from the right side of the arc-extinguishing grid by a sufficient distance as normal, and at this time, the voltage difference and the distance between the metal plate 10 and the right side of the arc-extinguishing grid are too short, the current breaks through air to form a continuous arc, and high current appears in the circuit again.
In the above process, when a short circuit occurs initially in the circuit, the current flowing through the coil 7 increases, the formed magnetic field enhances the attraction of the trigger block 5 to move downwards and compress the adjacent springs, when the trigger block 5 moves downwards, the fixed rod 25 is driven to move downwards, the fixed rod 25 drives the ratchet 18 to rotate clockwise from the left view direction through the pawl 26, the ratchet 18 drives the first rotating shaft 17 to rotate, the first rotating shaft 17 drives the two limiting plates 20 to rotate, at this moment, the gap between the two limiting plates 20 tilts, the weight 22 drives the mounting rod 21 and the first sliding rod 23 to slide forwards and downwards along the gap between the two limiting plates 20 under the action of self gravity until the first sliding rod 23 is blocked by the limiting ring 19, and the weight 22 drives the second sliding rod 24 to move forwards in the sliding process.
When the ratchet wheel 18 rotates, the positioning ring 27 is driven to rotate, the first moving rod 29 is extruded to move leftwards and compress adjacent springs, when the pawl 26 drives the ratchet wheel 18 to rotate until the first moving rod 29 passes through the highest position of the adjacent grooves when the ratchet wheel 18 rotates and separates, the first moving rod 29 moves rightwards under the action of the adjacent springs, the first moving rod 29 extrudes the inclined surface of the adjacent grooves of the positioning ring 27 after rotating and the first moving rod 29, the positioning ring 27 drives the ratchet wheel 18 to continue rotating until the first moving rod 29 is positioned at the lowest position of the adjacent grooves of the first moving rod 29 after rotating the positioning ring 27, at the moment, the first rotating shaft 17 and parts thereon rotate for 45 degrees, meanwhile, due to the fact that a circuit is disconnected, the current passing through the coil 7 disappears, the magnetic field generated by the coil 7 disappears, the trigger block 5 resets under the action of the adjacent springs, the transmission pawl 26 moves upwards, the pawl 26 is extruded by the ratchet wheel 18 to rotate and enables adjacent torsion springs to store force when the pawl 26 moves upwards, and the adjacent torsion springs rotate under the action of the adjacent torsion springs to reset when the pawl 26 moves upwards to the original position.
When the right disconnecting distance between the metal plate 10 and the arc extinguishing grid is far enough and insufficient to enable current to break through air to generate an arc, the spring is not failed at the moment, the device can work normally, after the circuit is disconnected, the switch 14 rotates the switch 14 anticlockwise from the front direction, at the moment, the switch 14 drives the third fixed shell 37 to rotate through the toothed ring gear, meanwhile, the fixed block 42 drives the upper part of the switch to rotate, when the spring telescopic rod 44 rotates, the telescopic end of the spring telescopic rod is extruded by the inclined plane on the right side of the limiting block 41, the spring telescopic rod 44 is shortened, meanwhile, the sliding frame 40 is pushed to move backwards by the limiting block 41, the sliding frame 40 drives the third moving rod 38 to move and stretch the adjacent tension spring, the third moving rod 38 drives the second friction disc 39 to move, when the spring telescopic rod 44 moves to the plane on the front side of the limiting block 41, the second friction disc 39 contacts with the first friction disc 34, at the moment, the second friction disc 39 drives the first friction disc 34 to rotate, the first friction disc 33 drives the second friction disc 35 to rotate, the second rotating shaft 35 drives the first rotating shaft 17 to rotate anticlockwise from the left direction through the gear box 33, the first rotating shaft 17 drives the ratchet wheel 17 to rotate from the left direction, the first rotating shaft 17 drives the ratchet wheel 18 to rotate, the ratchet wheel 18 to jack up the ratchet wheel 26 to the adjacent ratchet wheel 26 to the ratchet wheel 26 to be separated from the upper part 5, and the ratchet wheel 26 is separated from the ratchet wheel 5, and the ratchet wheel is in situ, after the ratchet wheel is separated from the ratchet wheel 26 is triggered, and the ratchet wheel is separated from the ratchet wheel 18, and the ratchet wheel is in the ratchet wheel is separated from the upper part.
When the pawl 26 is separated from the adjacent teeth on the ratchet 18, the spring telescopic rod 44 rotates to be in contact with the inclined plane on the left side of the limiting block 41, at this time, the tension spring adjacent to the third moving rod 38 drives the limiting block 41 to move forwards, at this time, the second friction disk 39 is separated from the first friction disk 34, the spring telescopic rod 44 is stretched, then the first friction disk 34 continues to rotate until the telescopic end of the spring telescopic rod 44 is separated from the inclined plane on the left side of the limiting block 41, at this time, the spring telescopic rod 44 is restored to the original length, the limiting block 41 is restored to the original position under the action of the spring adjacent to the third moving rod 38, at this time, the first rotating shaft 17 and parts thereon rotate anticlockwise from the left view direction by the cooperation of the positioning ring 27 and the first moving rod 29 to complete the residual angle, so that the first rotating shaft 17 and parts thereon rotate anticlockwise by 45 degrees in total, thereby completing the reset, and the device will not trigger emergency protection due to the disconnection of the short circuit for a plurality of times.
When the springs fail, the tension springs adjacent to the second transmission frame 15 and the springs adjacent to the rotating plates 8 provide insufficient force, so that the rotating amplitude of the rotating plates 8 cannot reach the amplitude when in normal use, the distance between the metal plates 10 and the right side of the arc extinguishing grid is not far enough, and an electric arc is generated between the metal plates 10 and the first triggering rod 6 again, the device cannot normally disconnect a circuit, the coil 7 again generates strong current to pass through, a magnetic field transmission triggering block 5 and an upper part thereof move downwards again, the triggering block 5 drives the first rotating shaft 17 and the upper part thereof to rotate 45 degrees again from the left view direction, the two limiting plates 20 rotate 90 degrees in total, a gap between the two limiting plates 20 is aligned with a notch on the lower side of the limiting ring 19, the weight 22 drives the mounting rod 21 and the first sliding rod 23 to fall under the action of self gravity, then the weight 22 contacts with the first triggering rod 6 and presses the first triggering rod 6 to compress the adjacent springs, the rotating plates 8 continue to rotate, the metal plates 10 are forced to rotate further away from the right side of the arc extinguishing grid to a sufficient distance, and the circuit is completely disconnected, and the high-temperature flame is prevented from continuously from being generated between the metal plates 10 and the arc extinguishing device.
When the weight 22 falls, the weight 22 presses the second moving rod 31 to move backwards, the second moving rod 31 compresses the adjacent springs, when the weight 22 stops falling, the upper side surface of the weight 22 is lower than the lower side surface of the second moving rod 31, the second moving rod 31 moves forwards under the action of the adjacent springs, the weight 22 is clamped at the position after falling, the rotating plate 8 is clamped, the switch 14 is clamped, the device after the aging of the springs is prevented from being continuously closed, the protection circuit is safe, after an electrician finds that the device which cannot be closed is detached after the device cannot be closed, then the aged springs in the device are replaced and maintained, the weight 22 and the upper parts of the device are reset, and simultaneously, the two limiting plates 20 are reset, and after all the parts in the device are overhauled and reset, the device is reloaded into the circuit to perform normal operation.
Example 2: on the basis of embodiment 1, as shown in fig. 2, 13 and 14, the device further comprises a second emergency mechanism for preventing the switch 14 from being propped against, the second emergency mechanism is arranged in the shell 1, the second emergency mechanism comprises a fourth fixed shell 45, the fourth fixed shell 45 is fixedly connected to the rear side in the shell 1, a moving block 46 is connected to the lower side of the fourth fixed shell 45 in a sliding manner, the moving block 46 is in extrusion fit with the bimetal strip 12, when the bimetal strip 12 is clamped on the right side and cannot be bent downwards, the middle part of the bimetal strip 12 is arched, the moving block 46 is extruded to move upwards, a spring is arranged between the moving block 46 and the fourth fixed shell 45 and is used for resetting the moving block 46, the liquid is hydraulic oil, a cavity is arranged between the switch 14 and the moving block 45, the cavity is used for allowing the liquid to enter, thereby adjusting the position of the fourth moving rod 47, a groove 48 is fixedly connected to the inside the cavity of the switch 14, a stop lever 48 is fixedly connected to the right side of the fourth moving rod 47, the stop lever 48 is arranged on the switch 14, when the stop lever 48 is contacted with the switch 14, the switch 14 can not be influenced by the liquid entering the cavity 14, and the cavity 14 is not influenced by the rotation of the switch 14, and the cavity is kept by the cavity 45.
In the use process of the device, if someone pushes the switch 14 against a small stick or the like, when the device triggers overload protection, the passing current exceeds rated current and continuously rises in temperature to bend the bimetal strip 12, but the right side of the bimetal strip 12 cannot be bent downwards because the switch 14 is pushed against to disconnect a circuit, at the moment, the middle part of the bimetal strip 12 is upwards arched, the movable block 46 is extruded to move upwards, the movable block 46 compresses adjacent springs, liquid in the fourth fixed shell 45 is extruded into a cavity of the switch 14 through a hose, the liquid in the cavity of the switch 14 is increased, the fourth movable rod 47 is extruded to move rightwards, the fourth movable rod 47 drives the stop rod 48 to move, the stop rod 48 extends out of the switch 14 and pushes away the stick or the like which pushes against the switch 14, so that the device can normally protect, at the moment, the switch 14 loses limit, the right side of the bimetal strip 12 is bent downwards, the second trigger rod 13 is driven to move downwards, the second trigger rod 13 is extruded to rotate on the left side of the rotary plate 8, thereby triggering overload protection, in the process, the movable block 46 moves downwards under the action of the adjacent springs, the liquid in the cavity of the switch 14 is extruded into the cavity, and the fourth movable rod 47 is driven to move by the reset rod 48 through the fourth fixed shell 45.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
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| CN117854993B (en) * | 2024-03-07 | 2024-05-24 | 济南广鑫电力工程设计有限公司 | Emergency protection device for electric power safety of electromechanical equipment |
| CN119092381B (en) * | 2024-11-08 | 2025-02-11 | 内蒙古泰达智能科技有限公司 | Arc extinguishing electric shock preventing electricity protector with fire extinguishing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109036992A (en) * | 2018-08-08 | 2018-12-18 | 河北宝凯电气股份有限公司 | A kind of shielding arc-suppressing method of breaker |
| CN113808888A (en) * | 2021-07-28 | 2021-12-17 | 徐秀婷 | Intelligent circuit breaker with line aging detection function |
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| AT384906B (en) * | 1985-12-02 | 1988-01-25 | Felten & Guilleaume Ag Oester | Fault current and line circuit breakers |
| US6897747B2 (en) * | 2002-05-10 | 2005-05-24 | Joseph T. Brandon | Circuit breaker |
| JP5276534B2 (en) * | 2009-07-06 | 2013-08-28 | 三菱電機株式会社 | Circuit breaker and circuit breaker mounting device |
| CN210805677U (en) * | 2019-11-29 | 2020-06-19 | 范杰 | Internet of things breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036992A (en) * | 2018-08-08 | 2018-12-18 | 河北宝凯电气股份有限公司 | A kind of shielding arc-suppressing method of breaker |
| CN113808888A (en) * | 2021-07-28 | 2021-12-17 | 徐秀婷 | Intelligent circuit breaker with line aging detection function |
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