Oil-immersed circuit breaker

Abstract

An oil-immersed circuit breaker comprises a main insulation base, an opening and closing structure, a static contact live-line assembly, a large-current tripping assembly, a moving contact live-line assembly and an alarm mechanism. The tripping bracket is rotatably connected to the main insulating base; the movable end of the static contact electrified assembly is warped up when being heated to drive the tripping bracket to swing; the moving contact electrified assembly is movably mounted on the main insulating base; the opening and closing structure is provided with an opening and closing clamping head. The opening and closing structure is connected to the moving contact live-line assembly and is used for driving the moving contact live-line assembly to move and driving the moving contact live-line assembly to be in contact with or separated from the static contact live-line assembly; during switching on, the switching-on and switching-off clamping head is clamped to the tripping support, so that the moving contact live-line assembly and the static contact live-line assembly are kept in contact. The lifting vertical rod abuts against the tripping support. And during opening, the opening and closing clamping head and the lifting vertical rod are separated from the tripping bracket, and the alarm mechanism gives an alarm. According to the scheme, the problem that an opening mechanism and an alarm mechanism of an existing circuit breaker are not coordinated is solved.

Description

Technical Field

[0001] This invention relates to the field of circuit breakers, and more particularly to an oil-immersed circuit breaker. Background Technology

[0002] Oil-immersed circuit breakers are high-voltage switchgear that utilize insulating oil as the arc-extinguishing and insulating medium, and are widely used in power systems. Their core working principle involves generating an electric arc in the oil and rapidly extinguishing it using the oil's cooling and insulating properties, thereby interrupting the fault current. In existing technologies, the transmission structure between the tripping and alarm mechanisms of oil-immersed circuit breakers is complex, leading to insufficient coordination between the two. This can easily result in the tripping mechanism failing to fully engage while triggering the alarm mechanism, causing inaccurate alarm triggering timing and preventing synchronized overload response between the tripping and alarm mechanisms. Summary of the Invention

[0003] The purpose of this invention is to provide an oil-immersed circuit breaker, which, when closed, engages with a tripping bracket via an opening / closing latch and is also supported by a lifting rod; when the moving end of the energized component of the stationary contact is heated, it tilts up, causing the tripping bracket to swing, so that the opening / closing latch and the lifting rod disengage from the tripping bracket, and the alarm mechanism issues an alarm.

[0004] To achieve this objective, the present invention adopts the following technical solution: An oil-immersed circuit breaker includes: a main insulating base, an opening and closing structure, a stationary contact energized assembly, a high-current tripping assembly, a moving contact energized assembly, and an alarm mechanism; The high-current tripping assembly is equipped with a tripping bracket, which is rotatably connected to the main insulating base; the fixed end of the stationary contact energized assembly is installed on the main insulating base, and the movable end of the stationary contact energized assembly is connected to the tripping bracket; when the movable end of the stationary contact energized assembly is heated, it tilts up, causing the tripping bracket to swing. The moving contact live assembly is movably mounted on the main insulating base; the opening and closing structure is equipped with an opening and closing latch; the opening and closing structure is connected to the moving contact live assembly and is used to drive the moving contact live assembly to move, thereby causing the moving contact live assembly to contact or separate from the stationary contact live assembly. The alarm mechanism is equipped with a lifting mast; When the circuit is closed, the opening / closing latch engages with the tripping bracket, keeping the energized components of the moving contact and the stationary contact in contact; the lifting rod abuts against the tripping bracket. When the circuit breaker is tripped, the opening / closing latch and the lifting rod disengage from the tripping bracket, and the alarm mechanism issues an alarm.

[0005] Optimally, the opening and closing structure includes: a multi-plate connecting rotating mechanism and a circuit breaker handle; The moving contact energized assembly includes: an opening / closing insulating bracket and a moving contact; The moving contact is connected to the front of the opening and closing insulating bracket; the multi-plate connecting rotating mechanism is installed on the opening and closing insulating bracket; the tripping bracket has a tripping surface at the rear of the opening and closing insulating bracket; The multi-plate connecting rotation mechanism includes: a first support shaft, a second support shaft, a third support shaft, a fourth support shaft, and multiple plate-like structures; The first support shaft, the third support shaft, and the second support shaft are arranged in a front-to-back order. The sheet-like structure is divided into a push-pull plate for opening and closing the gate, a rear support plate, an upper swing bend plate, a lower swing bend plate, a gate opening and closing clamp, a straight connecting plate, and a front support plate. The front end of the opening / closing push-pull plate is rotatably connected to one end of the direct connecting plate, the other end of the direct connecting plate is rotatably connected to one end of the front support plate, the other end of the front support plate is rotatably connected to the third support shaft, and the third support shaft is connected to the opening / closing insulating bracket; the direct connecting plate and the front support plate are rotatably connected through the fourth support shaft. The first support shaft is rotatably connected to the lower part of the opening / closing push-pull plate; one end of the lower swing bend and one end of the upper swing bend are rotatably connected to the rear of the opening / closing push-pull plate; the other end of the lower swing bend is rotatably connected to one end of the rear support plate; the other end of the rear support plate is rotatably connected to the second support shaft, which is rotatably connected to the opening / closing insulating bracket; the other end of the upper swing bend is rotatably connected to the opening / closing latch, which is rotatably connected between the two ends of the rear support plate via a closing shaft; the opening / closing latch is provided with a locking part; The circuit breaker handle drives the opening / closing push-pull plate to rotate clockwise around the first support shaft. The opening / closing push-pull plate drives the direct connecting piece to rotate clockwise around the fourth support shaft, causing the front support piece to move downward relative to the opening / closing push-pull plate. The third support shaft drives the moving contact of the opening / closing insulating bracket to move downward. The upper swing bend drives the opening / closing clamp to rotate counterclockwise around the closing shaft. The lower swing bend drives the rear support piece to rotate counterclockwise around the second support shaft. The locking part flips counterclockwise to be located behind the rear support piece. The locking part flips to lock onto the tripping surface to fix the position of the moving contact.

[0006] Optimally, the moving contact energized assembly includes: an opening and closing insulating bracket, a moving contact limiting assembly, and a moving contact; The opening and closing insulating bracket is provided with a movable contact mounting groove, and the opening above the movable contact mounting groove is provided with a card pressing block; The moving contact limiting assembly includes: a U-shaped base, a moving contact elastic element, and a spring clip; A base wiring plate is provided above the U-shaped base, and the base wiring plate extends out of the opening above the movable contact mounting slot; the U-shaped base is movably limited within the movable contact mounting slot; the lower part of the U-shaped base extends out of the opening below the movable contact mounting slot and is connected to the movable contact point; one end of the movable contact elastic element contacts the U-shaped base; the other end of the movable contact elastic element is located at the opening of the movable contact mounting slot and contacts the spring card; the spring card has a card limiting part, and the movable contact elastic element elastically presses the card limiting part against the card pressing block, and the base wiring plate elastically presses against the opening of the movable contact mounting slot.

[0007] Optimally, the stationary contact energized assembly includes: a bimetallic strip, a stationary metal support, and a stationary contact; One end of the bimetallic strip is mounted on the main insulating base; the other end of the bimetallic strip is provided with the static metal bracket; the static metal bracket is connected to the tripping bracket; and the static contact is connected to the bimetallic strip.

[0008] Optimally, the high-current tripping assembly includes: a magnetic chuck and a tripping push-pull rod; The magnetic locating piece is movably disposed on the main insulating base; one end of the tripping push-pull rod is connected to the magnetic locating piece, and the other end of the tripping push-pull rod contacts the tripping bracket; the stationary contact energized component becomes magnetic after being energized, and is used to magnetically attract the magnetic locating piece; when the magnetic locating piece moves to abut against the stationary contact energized component, the tripping push-pull rod drives the tripping bracket to rotate relative to the main insulating base.

[0009] Alternatively, the main insulating base may be provided with a rod locking slot on its side; One end of the magnetic absorbing piece is rotatably connected to the rod locking slot, and the other end of the magnetic absorbing piece is connected to one end of the tripping push-pull rod. The other end of the tripping push-pull rod is rotatably connected to the tripping bracket. The magnetic absorbing piece swings around the rod locking slot until it is attracted to the stationary contact energized component. When the magnetic absorbing piece is attracted to the stationary contact energized component, an attraction gap is formed between the two.

[0010] Optimally, it may also include: a coarse adjustment component and a support swing elastic element; The coarse adjustment assembly includes: a coarse adjustment seat and a coarse adjustment linkage; The coarse adjustment seat is installed on the static metal bracket; one end of the coarse adjustment connecting rod abuts against the tripping bracket, and the tripping bracket elastically presses against one end of the coarse adjustment connecting rod; the other end of the coarse adjustment connecting rod is movably fitted to the coarse adjustment seat for adjusting the tilt angle of the tripping bracket on the main insulating base. The front side of the tripping bracket contacts the coarse adjustment link, the bracket swing elastic element is disposed on the rear side of the tripping bracket, and the middle part of the tripping bracket is rotatably mounted on the main insulating base; one end of the bracket swing elastic element contacts the main insulating base, and the other end of the bracket swing elastic element contacts the tripping bracket, and the bracket swing elastic element elastically presses the front side of the tripping bracket against the coarse adjustment link.

[0011] Optimally, it also includes: an overload micro-adjustment structure; The overload micro-adjustment structure includes: a deactivated card, a card pivot, and an operating component; The card pivot is mounted on the release bracket; the release card is disposed on the release bracket, and the release card has a release surface; one end of the release card is rotatably connected to the card pivot, and the other end of the release card has a card operation port; the release bracket has a connecting rod receiving groove at the card operation port; The operating components include: an operating connector and an operating linkage; The operating connector is connected to the card operating port and is limited to the linkage receiving groove; the operating linkage is connected to the operating connector and is used to drive the operating connector to swing around the card rotating shaft to adjust the horizontal position of the release surface.

[0012] Alternatively, the opening and closing structure may be equipped with a circuit breaker handle; The overload micro-adjustment structure also includes: a handle adjustment lever; The tripping bracket is rotatably mounted on the main insulating base via a tripping swing shaft; the tripping bracket rotates around the tripping swing shaft; The operating linkage has a shaft mating part and a rod operating part; the shaft mating part is movably sleeved on the release swing shaft; the rod operating part is connected to the operating connector. The main insulating base is connected to the inner side of the circuit breaker handle; the handle adjustment rod is rotatably mounted on the circuit breaker handle, and the handle adjustment rod passes through the inner and outer sides of the circuit breaker handle; one end of the handle adjustment rod is located on the outer side of the circuit breaker handle and is used to drive the handle adjustment rod to rotate; one end of the handle adjustment rod extends to the inner side of the circuit breaker handle and contacts the rod operating part, and is used to drive the rod operating part to move.

[0013] Optimally, the alarm mechanism includes: an alarm frame, an alarm conductive component, an alarm push-pull rod, a lifting crossbar, and a lifting vertical rod; The alarm conductive component is electrically insulated and mounted on the alarm frame; the alarm push-pull rod is repositionably movable on the alarm frame; the alarm push-pull rod is provided with a V-shaped opening, and the V-shaped opening is provided with a guide inclined wall; the lifting crossbar is vertically limited to the alarm frame and extends laterally into the V-shaped opening; The alarm frame has a frame plane, and the frame plane has a frame transverse slot; the lifting crossbar is transversely connected to the lifting vertical bar; the lifting vertical bar can be lifted and moved through the frame transverse slot; When the circuit breaker is closed, the circuit breaker opening / closing latch engages with the tripping bracket. The circuit breaker opening / closing structure drives the alarm push-pull rod to move, which in turn moves the guide inclined wall. The guide inclined wall drives the lifting horizontal bar to move up and down, which in turn moves the lifting vertical bar up and down in the transverse slot of the frame until one end of the lifting vertical bar abuts against the tripping bracket. At this point, the lifting horizontal bar remains in contact with the alarm conductive component, making the alarm conductive component conductively connected to the lifting horizontal bar. When the circuit breaker is tripped, the opening / closing latch disengages from the tripping bracket, which drives the lifting vertical rod to reset. The lifting vertical rod then drives the lifting horizontal rod to disengage from the alarm conductive component; the alarm conductive component then issues an alarm.

[0014] Compared with the prior art, one of the above technical solutions has the following beneficial effects: This solution provides an oil-immersed circuit breaker. When closed, the opening / closing latch engages with the tripping bracket, and a lifting rod also abuts against the tripping bracket. When the moving end of the energized component of the stationary contact is heated, it tilts upwards, causing the tripping bracket to swing, thus disengaging the opening / closing latch and the lifting rod from the tripping bracket, triggering an alarm. This solution allows for synchronized closing and opening of the oil-immersed circuit breaker. When the circuit breaker triggers the opening mechanism, adjusting the opening / closing latch and the lifting rod via the tripping bracket synchronizes the opening and alarm, resolving the inconsistency between the opening and alarm mechanisms in existing circuit breakers. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of one embodiment of an oil-immersed circuit breaker; Figure 2 This is a structural schematic diagram of one embodiment of an oil-immersed circuit breaker; Figure 3 This is a schematic diagram of one embodiment of a multi-plate connected rotating mechanism; Figure 4 This is a schematic diagram of one embodiment of a multi-plate connected rotating mechanism during circuit breaker opening; Figure 5 This is a schematic diagram of one embodiment of a multi-plate connected rotating mechanism during closing. Figure 6 This is a schematic diagram of one embodiment of a multi-plate connected rotating mechanism; Figure 7 This is a schematic diagram of the structure of one embodiment of the moving contact energized assembly; Figure 8 This is an exploded structural diagram of one embodiment of the moving contact live assembly in one of the moving contact mounting slots; Figure 9 This is a cross-sectional structural schematic diagram of one embodiment of the moving contact energized assembly; Figure 10 This is a structural diagram of one embodiment of the alarm mechanism in the tripping bracket; Figure 11 This is a structural diagram of one embodiment of the alarm mechanism; Figure 12 This is a structural diagram of one embodiment of the alarm mechanism; Figure 13 This is an exploded structural diagram of one embodiment of the lifting vertical bar and the lifting horizontal bar; Figure 14 This is a schematic diagram of one embodiment of the overload micro-adjustment structure; Figure 15 This is a schematic diagram of one embodiment of the overload micro-adjustment structure; Figure 16 This is a top view schematic diagram of one embodiment of the overload micro-adjustment structure; Figure 17 This is a schematic diagram of one embodiment of the circuit breaker handle connection overload micro-adjustment structure; Figure 18 This is a schematic diagram of the structure of one embodiment of the stationary contact live assembly; Figure 19 This is a schematic diagram of the structure of a high-current tripping assembly installed on the main insulating base in one embodiment; Figure 20 This is a schematic diagram of one embodiment of the high-current tripping component during closing. Figure 21 This is a schematic diagram of one embodiment of the high-current tripping component triggering tripping during a short circuit. Detailed Implementation

[0016] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0018] like Figure 1-21 An oil-immersed circuit breaker includes: a main insulating base 5, an opening and closing structure 10, a stationary contact energized assembly 6, a high-current tripping assembly 8, a moving contact energized assembly 2, and an alarm mechanism 3. The high-current tripping assembly 8 is provided with a tripping bracket 41, which is rotatably connected to the main insulating base 5; the fixed end of the stationary contact energized assembly 6 is installed on the main insulating base 5, and the movable end of the stationary contact energized assembly 6 is connected to the tripping bracket 41; when the movable end of the stationary contact energized assembly 6 is heated, it tilts up, causing the tripping bracket 41 to swing. The moving contact live assembly 2 is movably mounted on the main insulating base 5; the opening and closing structure 10 is provided with an opening and closing latch 115; the opening and closing structure 10 is connected to the moving contact live assembly 2 and is used to drive the moving contact live assembly 2 to move, thereby causing the moving contact live assembly 2 to contact or separate from the stationary contact live assembly 6. Alarm mechanism 3 is equipped with a lifting rod 35; When closing the circuit, the opening / closing latch 115 engages with the tripping bracket 41, keeping the moving contact energized component 2 in contact with the stationary contact energized component 6; the lifting rod 35 abuts against the tripping bracket 41. When the circuit breaker is tripped, the opening / closing latch 115 and the lifting rod 35 disengage from the tripping bracket 41, and the alarm mechanism 3 issues an alarm.

[0019] This solution provides an oil-immersed circuit breaker. When closed, the circuit breaker engages with the trip bracket 41 via the opening / closing latch 115 and is also supported by the lifting rod 35. When the movable end of the stationary contact energized component 6 is heated, it tilts up, causing the trip bracket 41 to swing, thereby disengaging the opening / closing latch 115 and the lifting rod 35 from the trip bracket 41, triggering an alarm mechanism 3. This solution allows the oil-immersed circuit breaker to synchronize closing and opening. When the oil-immersed circuit breaker triggers the opening mechanism, the opening / closing latch 115 and the lifting rod 35 are adjusted via the trip bracket 41, synchronizing the opening and alarm, thus solving the problem of incoordination between the opening and alarm mechanisms in existing circuit breakers.

[0020] The opening and closing structure 10 can be optimized to include: a multi-plate connecting rotating mechanism 1 and a circuit breaker handle 45; The moving contact live assembly 2 includes: an opening and closing insulating bracket 21 and a moving contact 23; The moving contact 23 is connected to the front of the opening and closing insulating bracket 21; the multi-plate connecting rotating mechanism 1 is installed on the opening and closing insulating bracket 21; the tripping bracket 41 has a tripping surface 421 at the rear of the opening and closing insulating bracket 21; The multi-plate connecting rotating mechanism 1 includes: a first support rotating shaft 12, a second support rotating shaft 13, a third support rotating shaft 17, a fourth support rotating shaft 16, and multiple plate-like structures 11; The first support shaft 12, the third support shaft 17, and the second support shaft 13 are distributed in a front-to-back order; The sheet structure 11 is divided into a push-pull plate for opening and closing the gate 111, a rear support plate 112, an upper swing bend plate 113, a lower swing bend plate 114, an opening and closing gate clamp 115, a direct connection plate 116, and a front support plate 117. The front end of the opening / closing push-pull piece 111 is rotatably connected to one end of the direct connecting piece 116, the other end of the direct connecting piece 116 is rotatably connected to one end of the front support piece 117, the other end of the front support piece 117 is rotatably connected to a third support shaft 17, and the third support shaft 17 is connected to the opening / closing insulating bracket 21; the direct connecting piece 116 and the front support piece 117 are rotatably connected through a fourth support shaft 16. A first support shaft 12 is rotatably connected to the lower part of the opening / closing push-pull plate 111; one end of the lower swing bend 114 and one end of the upper swing bend 113 are rotatably connected to the rear of the opening / closing push-pull plate 111; the other end of the lower swing bend 114 is rotatably connected to one end of the rear support plate 112; the other end of the rear support plate 112 is rotatably connected to a second support shaft 13, which is rotatably connected to the opening / closing insulating bracket 21; the other end of the upper swing bend 113 is rotatably connected to the opening / closing latch 115, which is rotatably connected between the two ends of the rear support plate 112 via a closing shaft 18; the opening / closing latch 115 is provided with a latching part 1151; The circuit breaker handle 45 drives the opening and closing push-pull piece 111 to rotate clockwise around the first support shaft 12. The opening and closing push-pull piece 111 drives the direct connecting piece 116 to rotate clockwise around the fourth support shaft 16, causing the front support piece 117 to move downward relative to the opening and closing push-pull piece 111. The third support shaft 17 drives the moving contact 23 of the opening and closing insulation bracket 21 to move downward. The upper swing bend 113 drives the opening and closing clamp head 115 to rotate counterclockwise around the closing shaft 18. The lower swing bend 114 drives the rear support piece 112 to rotate counterclockwise around the second support shaft 13. The clamping part 1151 flips counterclockwise to be located behind the rear support piece 112. The clamping part 1151 flips to be clamped on the tripping surface 421, so that the position of the moving contact 23 is fixed.

[0021] Specifically, such as Figure 1 and Figure 2 The circuit breaker handle 45 directly or indirectly drives the opening / closing push-pull plate 111 to swing, and the circuit breaker handle 45 can drive the opening / closing push-pull plate 111 to swing elastically back to its original position around the first support shaft 12. For the elastically back to its original position swing of the opening / closing push-pull plate 111, a known elastic element can be added directly to the circuit breaker handle 45 as needed, or an elastic element can be added to the connection structure between the circuit breaker handle 45 and the opening / closing push-pull plate 111, so that the opening / closing push-pull plate 111 can elastically return to its original position after swinging backward and downward; the first support shaft 12, the third support shaft 17, and the second support shaft 1 3 is a multi-piece connecting rotating mechanism 1 in a fixed position on the opening and closing insulating bracket 21. The first support rotating shaft 12 and the second support rotating shaft 13 can be fixed to the main insulating base 5. The third support rotating shaft 17 and the second support rotating shaft 13 are rotatably connected to the opening and closing insulating bracket 21 respectively. This solution has multiple sheet-like structures 11. The sheet-like structures 11 are divided into opening and closing push-pull plates 111, rear support plates 112, upper swing bend plates 113, lower swing bend plates 114 and opening and closing clamps 115 according to their positions and functions. The direct connecting plate 116 connects the front of the opening and closing push-pull plate 111 to one end of the front support plate 117. like Figure 4When the opening and closing push-pull plate 111 rotates clockwise around the first support shaft 12, the front of the opening and closing push-pull plate 111 is connected to the front support plate 117 through the direct connecting plate 116. The positions of the first support shaft 12 and the second support shaft 13 are stationary relative to the main insulating base 5. The opening and closing push-pull plate 111 drives the front support plate 117 to rotate clockwise around the fourth support shaft 16 through the direct connecting plate 116, thereby causing the front support plate 117 and the third support shaft 17 to move downward. The third support shaft 17 is connected to the opening and closing insulating bracket 21, and the opening and closing insulating bracket 21 is equipped with a moving contact live assembly 2. The moving contact 23 of the moving contact live assembly 2 contacts the stationary contact 63 of the lower stationary contact live assembly 6 downward. Subsequently, after the moving contact 23 abuts against the stationary contact 63, the opening / closing push-pull plate 111 continues to rotate clockwise around the first support shaft 12. The opening / closing push-pull plate 111 drives one end of the upper swing plate 113 and one end of the lower swing plate 114 connected to it to rotate counterclockwise to swing downwards. The upper swing plate 113 is curved, and when one end of the upper swing plate 113 rotates counterclockwise, it causes the other end to swing backwards and upwards. Based on the limiting effect of the second support shaft 13, the rear support plate 112, and the opening / closing latch 115 on the upper swing plate 113, the other end of the lower swing plate 114 drives the rear support plate 112 to rotate counterclockwise around the second support shaft 13, causing the rear support plate 114 to swing downwards. 12. The valve swings to approach the opening / closing push-pull plate 111; there is a closing shaft 18 between the two ends of the rear support plate 112, and the opening / closing clamp 115 is rotatably connected to the closing shaft 18 and the other end of the upper swing bend 113 respectively. When the other end of the upper swing bend 113 swings counterclockwise upwards and backwards, it drives the opening / closing clamp 115 connected to it to swing around the closing shaft 18, causing the opening / closing clamp 115 to rotate counterclockwise; the opening / closing clamp 115 is provided with a locking part 1151, which has a locking function. As the rear support plate 112 swings to approach the opening / closing push-pull plate 111, the locking part 1151 rotates counterclockwise to be located behind the rear support plate 112. After flipping, the locking part 1151 can be locked onto any plane, such as the tripping surface 421, etc. Figure 5Since the opening and closing push-pull piece 111 is an elastically resettable movable adjustment, it stores elastic potential energy during its downward swing. When the locking part 1151 is locked onto the tripping surface 421, the tripping surface 421 restricts the movement of the locking part 1151, thereby restricting the angle and position of the plate structure 11, and thus restricting the position of the moving contact 23 and the stationary contact. At this time, the circuit breaker is in the closed state. When the circuit breaker switches to the open state, the opening mechanism adjusts the movement of the tripping surface 421 so that when the tripping surface 421 and the locking part 1151 disengage, the originally stored elastic potential energy can drive the opening and closing push-pull piece 111 and the locking part 1151 and other structures to reset. In both the closed and open states, the circuit breaker can realize the switching function of the circuit breaker through only multiple plate-like parts and rotating shafts. The transmission structure of the circuit breaker is simple and compact, which is very suitable for compact circuit breakers. It solves the problem of the complex closing and opening transmission structure of existing circuit breakers, which leads to a large space occupation.

[0022] Alternatively, the multi-plate connecting rotation mechanism 1 may further include: an elastic support member and a transmission elastic member 15; An elastic support is provided on the sheet-like structure 11; the movable end of the transmission elastic element 15 is connected to the elastic support. During rotation, the opening and closing push-pull plate 111 drives the movable end of the transmission elastic member 15 to move closer to or further away from the fixed end of the transmission elastic member 15.

[0023] The elastic support can be installed in any of the sheet-like structures 11, such as the opening / closing push-pull piece 111, the rear support piece 112, the upper swing bend 113, the lower swing bend 114, or the opening / closing clamp 115; one end of the transmission elastic member 15 is connected to the elastic support, and this connection end is the movable end of the transmission elastic member 15; the other end of the transmission elastic member 15 can be fixed to a part that is not part of the multi-piece connected rotating mechanism 1, such as the circuit breaker handle 45, or in a structure with a driving relationship between the circuit breaker handle 45 and the multi-piece connected rotating mechanism 1, and this end is mainly used to fix the transmission elastic member 15, serving as the fixed end of the transmission elastic member 15; for example, in Figure 1 and Figure 2In the circuit breaker, the handle 45 drives the opening and closing push-pull plate 111 to move via the push-pull head bracket 19. The push-pull head bracket 19 can serve as the fixed end of the transmission elastic element 15. The movement of the moving end and the fixed end of the transmission elastic element 15 towards each other or away from each other allows the transmission elastic element 15 to be elastically adjusted. For example, when the opening and closing push-pull plate 111 swings backward and downward around the first support shaft 12, the elastic support drives the moving end of the transmission elastic element 15 connected to it to move away from the fixed end, so that the transmission elastic element 15 opens and stores elastic potential energy. After the locking part 1151 disengages from the tripping surface 421, the elastic potential energy of the transmission elastic element 15 is converted into kinetic energy, and the moving end of the transmission elastic element 15 moves toward the fixed end, so that the transmission elastic element 15 elastically contracts. Through the elastic support, it drives the plate-like structure 11 connected to it to reset, and finally resets the opening and closing push-pull plate 111.

[0024] The transmission elastic element 15 can be a known elastic element, such as a spring, rubber band, thermoplastic elastomer, etc., and is preferably a spring.

[0025] Alternatively, the elastic support can be a fourth support pivot 16.

[0026] This solution cleverly replaces other elastic support members with the fourth support shaft 16. The fourth support shaft 16 is connected to the movable end of the transmission elastic member 15. By directly replacing other mechanisms with the fourth support shaft 16, it is not necessary to set a fixing position on the surface of the sheet structure 11, thus maintaining the flatness of the surface of the sheet structure 11. There is no need to process specific installation positions on the surface of the sheet structure 11.

[0027] The outer side of the fourth support shaft 16 is provided with a shaft recess 161; The movable end of the transmission elastic element 15 is engaged with the shaft recess 161.

[0028] The outer side of the fourth support shaft 16 is provided with a shaft recess 161, which is relatively recessed from other positions. The movable end of the transmission elastic element 15 is directly engaged with the shaft recess 161, which can prevent the transmission elastic element 15 from disengaging from the fourth support shaft 16 when it repeatedly opens and closes, thereby improving the fixing stability of the transmission elastic element 15.

[0029] Optimally, the opening and closing clamp 115 is located in front of the rear support plate 112; after the opening and closing push-pull plate 111 rotates clockwise around the first support shaft 12, the opening and closing clamp 115 flips to be located behind the rear support plate 112.

[0030] Before the opening / closing push-pull plate 111 swings, the opening / closing latch 115 is located in front of the rear support plate 112, as shown below. Figure 4When the opening / closing push-pull plate 111 indirectly drives the opening / closing latch 115 to swing, the opening / closing latch 115 extends out of the rear support plate 112, that is, it is located behind the rear support plate 112, so as to engage with the tripping surface 421 behind the rear support plate 112. Figure 5 Thus, when the circuit is open, the opening and closing clamp 115 is stored in front of the rear support plate 112; the opening and closing clamp 115 only extends out of the rear support plate 112 when the circuit is closed; the opening and closing clamp 115 will not occupy too much space when the circuit is open, which makes the structure of the multi-plate connecting rotating mechanism 1 more compact.

[0031] Optimally, the locking part 1151 is a locking groove; before the opening and closing push-pull piece 111 rotates clockwise around the first support shaft 12, the opening of the locking groove faces upward; after the opening and closing push-pull piece 111 rotates clockwise around the first support shaft 12, the opening of the locking groove faces downward, and the locking groove is used to lock downward onto the tripping surface 421. The outer edge of the opening / closing latch 115 is provided with a latch arc 1152. During the counterclockwise rotation of the opening / closing latch 115 around the closing shaft 18, the latch arc 1152 and the latching part 1151 pass through the tripping surface 421 successively. In some embodiments, the latching part 1151 can be other structures or shapes, such as plate structures, hole structures, groove structures, etc., as long as it directly or indirectly latches onto the tripping surface 421 after rotation. In some embodiments, the latching part 1151 is a latching groove. In the open state, the opening of the latching groove faces upward. When closing is required, the opening / closing latch 115 rotates counterclockwise around the closing shaft 18, and the opening orientation of the latching groove changes. The opening of the latching groove flips from facing upward to facing downward and finally latches onto the tripping surface 421. Under the action of elasticity, the latching groove presses against the tripping surface 421, thereby keeping the angle of the opening / closing push-pull piece 111 fixed.

[0032] The outer edge of the opening and closing latch 115 is provided with a latch arc 1152. The latch arc 1152 can reduce the corner structure of the outer edge of the opening and closing latch 115, making the structure of the opening and closing latch 115 smoother. When the opening and closing latch 115 swings counterclockwise around the closing shaft 18 to the upper rear, the latch arc 1152 can maintain contact with the tripping surface 421, guiding the opening and closing latch 115 to flip and engage with the tripping surface 421. The latch arc 1152 can prevent the corner structure of the opening and closing latch 115 from restricting the opening and closing latch 115 from continuing to rotate, thereby preventing the problem of failure to close.

[0033] Optimally, some sheet-like structures 11 are arranged in pairs; two identical sheet-like structures 11 are distributed on the left and right sides of the opening and closing gate push-pull piece 111 and are coaxially rotatably connected as one unit.

[0034] The number of partial sheet-like structures 11 is preferably two, such as a rear support sheet 112, an upper swing bend 113, a lower swing bend 114, and a straight connecting sheet 116; for example... Figure 3 The number of rear support plates 112, upper swing bends 113, lower swing bends 114, and straight connecting plates 116 is two, which are respectively arranged on the left and right sides of the opening and closing push-pull plate 111. The two identical plate-shaped structures 11 are coaxially rotatably connected as one unit; for example, a pair of straight connecting plates 116 are arranged on the left and right sides of the opening and closing push-pull plate 111, and the two straight connecting plates 116 are coaxially connected to the hole structure in front of the opening and closing push-pull plate 111; two upper swing bends 113 are located on the left and right sides of the opening and closing push-pull plate 111, lower swing bends 114 are located on the left and right sides of the two upper swing bends 113, and two rear support plates 112 are located on the left and right sides of the two lower swing bends 114. In this way, the paired plate-shaped structures 11 can maintain the left and right balance of the multi-plate connected rotating mechanism 1, which can make the transmission of the multi-plate connected rotating mechanism 1 smoother and more reliable.

[0035] The push-pull head bracket 19 is movably limited to the opening and closing insulating bracket 21; the circuit breaker handle 45 is connected to the push-pull head bracket 19 and is used to drive the push-pull head bracket 19 to move within the opening and closing insulating bracket 21, so that the opening and closing insulating bracket 21 moves to contact the opening and closing push-pull piece 111, and the opening and closing insulating bracket 21 is used to drive the opening and closing push-pull piece 111 to move. The circuit breaker handle 45 is generally located outside the circuit breaker, and it can drive the push-pull head bracket 19 to move from outside the circuit breaker; the push-pull head bracket 19 can move to abut against the opening and closing push-pull piece 111, so that the opening and closing push-pull piece 111 moves to drive the moving contact 23 to abut against the stationary contact, and can also drive the opening and closing latch 115 to engage with the tripping surface 421, fixing the position of the moving contact 23 and the stationary contact.

[0036] A push-pull plate drive unit 1111 is provided above the opening and closing push-pull plate 111. The push-pull plate drive unit 1111 is used to drive the opening and closing push-pull plate 111 to swing. The push-pull plate drive unit 1111 is located above the opening and closing push-pull plate 111. The circuit breaker handle 45 contacts the push-pull plate drive unit 1111 through the push-pull head bracket 19 to drive the push-pull plate drive unit 1111 to swing. This drives the opening and closing push-pull plate 111 to swing around the first support shaft 12 in an elastically reset manner. Since the push-pull plate drive unit 1111 is located above the opening and closing push-pull plate 111, it does not affect the transmission in other positions.

[0037] The moving contact energized assembly 2 can be optimized to include: an opening and closing insulating bracket 21, a moving contact limiting assembly 22, and a moving contact 23; The opening and closing insulating bracket 21 is provided with a movable contact mounting groove 211, and a card pressing block 212 is provided in the opening above the movable contact mounting groove 211; The moving contact limiting assembly 22 includes: a U-shaped base 221, a moving contact elastic element 222, and a spring clip 223; A base wiring plate 2211 is provided above the U-shaped base 221, and the base wiring plate 2211 extends out of the opening above the movable contact mounting groove 211; the U-shaped base 221 is movably limited in the movable contact mounting groove 211; the lower part of the U-shaped base 221 extends out of the opening below the movable contact mounting groove 211 and is connected to the movable contact 23; one end of the movable contact elastic member 222 contacts the U-shaped base 221; the other end of the movable contact elastic member 222 is located at the groove opening of the movable contact mounting groove 211 and contacts the spring card 223; the spring card 223 is provided with a card limiting part 2231, and the movable contact elastic member 222 elastically presses the card limiting part 2231 against the card pressing block 212, and the base wiring plate 2211 elastically presses against the opening of the movable contact mounting groove 211.

[0038] Specifically, the moving contact energized assembly 2 is part of the circuit breaker. When the circuit breaker is closed, the moving contact energized assembly 2 moves to contact the stationary contact energized assembly 6. The handle of the circuit breaker can directly or indirectly drive the opening and closing insulation bracket 21 to move, so that the moving contact 23 contacts the stationary contact 63. The opening and closing insulating bracket 21 is provided with a movable contact mounting groove 211, which has slots at the top and bottom. A U-shaped base 221 is disposed in the movable contact mounting groove 211. The base terminal plate 2211 above the U-shaped base 221 extends horizontally out of the slot above the movable contact mounting groove 211. The bottom of the U-shaped base 221 extends out from the opening below the movable contact mounting groove 211 and is connected to the movable contact 23 at the extended position. The U-shaped base 221 is movable in the movable contact mounting groove 211, and the movable contact elastic element 222 provides elastic adjustment for the movement of the U-shaped base 221. One end of the movable contact elastic element 222 contacts the U-shaped base 221, and the other end of the movable contact elastic element 222 contacts the spring clip 223. A clip pressing block 212 is provided in the opening above the movable contact mounting groove 211, and the clip limiting part 2231 of the spring clip 223 is engaged with it. Card pressure block 212; In the initial state, when the movable contact elastic element 222 presses against the U-shaped base 221, it will cause the base terminal plate 2211 to press against the outer periphery of the opening above the movable contact mounting groove 211; When the movable contact 23 moves to contact the stationary contact 63, the movable contact 23 drives the U-shaped base 221 to move in the movable contact mounting groove 211; The U-shaped base 221 moves towards the spring card 223, and during the movement, it presses the movable contact elastic element 222 against the spring card 223, so that the movable contact elastic element 222 stores elastic potential energy. The spring card 223 does not move under the limiting action of the card pressure block 212. Therefore, the U-shaped base 221 can provide a buffering effect for the movable contact 23 during the movement in the movable contact mounting groove 211. When the movable contact 23 contacts the stationary contact 63, it is not easy to be damaged or deformed due to the buffering effect. When the moving contact 23 disengages from the stationary contact 63, the moving contact elastic element 222 releases its stored elastic potential energy, driving the moving contact 23 to reset and push it back to its original position. Therefore, this solution avoids a rigid contact between the moving contact 23 and the stationary contact, solving the problem of insufficient buffering effect of the moving contact 23 leading to easy damage to the surface of either the moving contact 23 or the stationary contact 63.

[0039] Alternatively, the U-shaped base 221 is provided with a base U-shaped groove 2212, the opening of the base U-shaped groove 2212 is close to the spring clip 223, and one end of the movable contact elastic element 222 contacts the bottom wall of the base U-shaped groove 2212. The spring clip 223 is aligned with the opening of the U-shaped groove 2212 of the base. When the U-shaped base 221 moves to the movable contact mounting groove 211, the spring clip 223 extends into the U-shaped groove 2212 of the base. The moving contact mounting groove 211 has two opposing side walls with groove openings 213; the base U-shaped groove 2212 has base wiring plates 2211 on both sides of the groove opening, the base wiring plates 2211 extend out of the groove openings 213, and the base wiring plates 2211 are elastically pressed against the inner wall of the groove openings 213.

[0040] The U-shaped base 221 has a base U-shaped groove 2212, and the movable contact elastic element 222 contacts the bottom wall of the base U-shaped groove 2212; and the spring clip 223 is aligned with the opening of the base U-shaped groove 2212. When the U-shaped base 221 moves to the movable contact mounting groove 211, the base U-shaped groove 2212 of the U-shaped base 221 moves relative to the spring clip 223. The spring clip 223 can extend into the base U-shaped groove 2212. The movement of the U-shaped base 221 is not restricted by the spring clip 223. Therefore, the compression distance of the movable contact elastic element 222 is greater, and the elastic buffering effect of the U-shaped base 221 on the movable contact 23 is greater.

[0041] In some embodiments, the base wiring plate 2211 is pressed against the outer periphery of the opening above the movable contact mounting groove 211; The side wall of the movable contact mounting groove 211 is provided with a slot cutout 213; the base wiring plate 2211 is located on both sides of the slot opening of the base U-shaped groove 2212; when the two ends of the movable contact elastic element 222 are respectively in contact with the spring card 223 and the bottom wall of the base U-shaped groove 2212, the base wiring plate 2211 can abut against the inner wall of the slot cutout 213; in some embodiments, the distance from the top to the bottom of the U-shaped base 221 is close to the depth of the movable contact mounting groove 211; while the slot cutout 213 of this embodiment can reduce the distance between the base wiring plate 2211 and the movable contact 23, have the same buffering effect, and can also reduce the size of the U-shaped base 221, thereby saving material usage costs.

[0042] The moving contact live assembly 2 also includes: a moving conductor 24; The moving wire 24 is connected to the base terminal block 2211.

[0043] The moving wire 24 is connected to the base terminal block 2211 of the U-shaped base 221. The current flows through the moving wire 24, the base terminal block 2211, and the moving contact 23, and then through the stationary contact 63... The two opposing side walls of the moving contact mounting groove 211 are respectively provided with groove openings 213. The base terminal blocks 2211 on both sides of the U-shaped groove 2212 of the base are respectively located in the groove openings 213. The base terminal blocks 2211 on both sides are connected to the same moving contact 23. The U-shaped base 221 can connect two moving wires 24 at the same time, and the positions of the moving wires 24 are separated, and the positions of the moving wires 24 are not interfered with. If one moving wire 24 is damaged, the other moving wire 24 can keep the moving contact energized component 2 energized.

[0044] In some embodiments, the card clamping block 212 can contact the card limiting portion 2231 of the spring card 223 through a planar structure, and the movable elastic member 222 presses the card limiting portion 2231 against the bottom surface of the card clamping block 212. In some embodiments, the card clamping block 212 is provided with a card limiting groove 215, the opening of the card limiting groove 215 being located on the side and bottom; the card limiting portion 2231 is engaged with the card limiting groove 215. The card limiting portion 2231 can be engaged with the card limiting groove 215 of the card clamping block 212, and the multiple sidewalls within the card limiting groove 215 can limit the card limiting portion 2231, preventing the position of the spring card 223 from deviating and disengaging from the card clamping block 212, thus ensuring the positional stability of the spring card 223.

[0045] Alternatively, one side of the spring card 223 is provided with a card connecting post 2232, the movable contact elastic element 222 is a spring, and the card connecting post 2232 extends into one end of the movable contact elastic element 222; the other side of the spring card 223 is provided with a card adjustment port 2233; the card adjustment port 2233 is in the shape of a straight line or a cross.

[0046] The movable contact elastic element 222 is a spring. The card connecting post 2232 on one side of the spring card 223 extends into one end of the movable contact elastic element 222. The other side of the spring card 223 is provided with a card adjustment port 2233. The card adjustment port 2233 is in the shape of a straight line or a cross, which is adapted to the shape of a screwdriver. The screwdriver can be pressed against the card adjustment port 2233 to drive the spring card 223 to press towards the U-shaped base 221, so that the spring card 223 is disengaged from the card limiting groove 215, and drive the spring card 223 to rotate 90°, thereby rotating and adjusting the card limiting part 2231 of the spring card 223 to be away from the card pressing block 212. Finally, the spring card 223 can be removed, which facilitates the replacement of the U-shaped base 221 and the movable contact elastic element 222, simplifies the disassembly steps of the movable contact live assembly 2, and facilitates the subsequent maintenance and repair of the movable contact live assembly 2.

[0047] The moving contact mounting slots 211 are arranged in pairs on the opening and closing insulating brackets 21.

[0048] The opening and closing insulating bracket 21 is provided with a pair of moving contact mounting slots 211. Each moving contact mounting slot 211 is provided with a moving contact limiting component 22 and is connected to a moving contact 23. When the circuit breaker is closed, when the opening and closing insulating bracket 21 moves towards the stationary contact energized component 6, the moving contact 23 of one moving contact mounting slot 211 independently contacts one stationary contact 63 of the stationary contact energized component 6. This is equivalent to a circuit breaker having two independent contact systems, which prevents the circuit breaker from failing to respond in time when a single contact system fails.

[0049] Optimally, it also includes: a push-pull head bracket 19 and a circuit breaker handle 45; The push-pull head bracket 19 is movably limited to the opening and closing insulating bracket 21; the circuit breaker handle 45 is connected to the push-pull head bracket 19 and is used to drive the push-pull head bracket 19 to move to the opening and closing insulating bracket 21, the opening and closing insulating bracket 21 moves to contact the opening and closing push-pull piece 111, and the opening and closing insulating bracket 21 is used to drive the opening and closing push-pull piece 111 to move.

[0050] The circuit breaker handle 45 is generally located outside the circuit breaker. It can drive the push-pull head bracket 19 to move outside the circuit breaker. The push-pull head bracket 19 can move to abut against the opening and closing push-pull piece 111, so that the opening and closing push-pull piece 111 can move to drive the moving contact 23 to abut against the stationary contact, and can also drive the opening and closing latch 115 to engage with the tripping surface 421, fixing the position of the moving contact 23 and the stationary contact.

[0051] A push-pull plate drive unit 1111 is provided above the opening and closing push-pull plate 111. The push-pull plate drive unit 1111 is used to drive the opening and closing push-pull plate 111 to swing. The push-pull plate drive unit 1111 is located above the opening and closing push-pull plate 111. The circuit breaker handle 45 contacts the push-pull plate drive unit 1111 through the push-pull head bracket 19 to drive the push-pull plate drive unit 1111 to swing. This drives the opening and closing push-pull plate 111 to swing around the first support shaft 12 in an elastically reset manner. Since the push-pull plate drive unit 1111 is located above the opening and closing push-pull plate 111, it does not affect the transmission in other positions.

[0052] Optimally, the stationary contact live assembly 6 includes: a bimetallic strip 61, a stationary metal support 62, and a stationary contact 63; One end of the bimetallic strip 61 is mounted on the main insulating base 5; the other end of the bimetallic strip 61 is provided with a static metal bracket 62; the static metal bracket 62 is connected to the tripping bracket 41; and the static contact 63 is connected to the bimetallic strip 61.

[0053] The high-current trip assembly 8 of this solution has two protection mechanisms. One is to use a magnetic chuck 81 to drive the trip push-pull rod 82 to move, so that the trip bracket 41 swings instantaneously, which is suitable for high-current applications. The other is thermal protection, which utilizes the slow tilting of the bimetallic strip 61 when heated, so as to drive the trip bracket 41 to tilt gradually. One end of the bimetallic strip 61 is installed on the main insulating base 5, and the other end of the bimetallic strip 61 is movable and connected to the stationary metal bracket 62. When the bimetallic strip 61 is deformed by heat, the end of the bimetallic strip 61 near the stationary metal bracket 62 tilts, thereby driving the stationary metal bracket 62, its coarse adjustment seat 71 and coarse adjustment connecting rod 72 to tilt. The coarse adjustment connecting rod 72 drives the trip bracket 41 to swing around the trip bracket 41, thereby causing the trip bracket 41 to disengage from the opening and closing clamp 115 and / or the lifting rod 35. The opening and closing clamp 115 drives the circuit breaker to open, and the lifting rod 35 drives the circuit breaker to activate the alarm state.

[0054] Alternatively, the high-current tripping assembly 8 may include: a magnetic chuck 81 and a tripping push-pull rod 82; The magnetic accumulator 81 is movably mounted on the main insulating base 5; one end of the trip push-pull rod 82 is connected to the magnetic accumulator 81, and the other end of the trip push-pull rod 82 contacts the trip bracket 41; the stationary contact energized assembly 6 is magnetic after being energized, and is used to magnetically attract the magnetic accumulator 81. When the magnetic accumulator 81 moves to abut against the stationary contact energized assembly 6, the trip push-pull rod 82 drives the trip bracket 41 to rotate relative to the main insulating base 5.

[0055] Specifically, the main insulating base 5 serves as the base of the circuit breaker, and the stationary contact energized assembly 6 is installed on the main insulating base 5. Generally, the moving contact energized assembly 2 is installed on the opening and closing insulating bracket 21, which is rotatably installed on the main insulating base 5. When the opening and closing insulating bracket 21 drives the moving contact energized assembly 2 to contact the stationary contact energized assembly 6, the circuit breaker is in the closed state. When the opening and closing insulating bracket 21 drives the moving contact energized assembly 2 to disengage from the stationary contact energized assembly 6, the circuit breaker is in the open state. The tripping bracket 41 is rotatably installed on the main insulating base 5 and can be elastically reset. The tripping bracket 41 is used to directly or indirectly engage the opening and closing latch 115 and / or the lifting rod 35. After the opening and closing latch 115 and / or the lifting rod 35 disengage from the tripping bracket 41, the opening and closing latch 115 drives the circuit breaker to open, and the lifting rod 35 drives the circuit breaker to activate the alarm state. Therefore, when the stationary contact live assembly 6 is continuously heated, it will tilt up and, after reaching a certain degree of deformation, drive the trip bracket 41 to rotate relative to the main insulating base 5, causing the opening and closing clamp 115 and / or the lifting rod 35 to disengage from the trip bracket 41. After the opening and closing clamp 115 disengages from the trip bracket 41, it drives the moving contact live assembly 2 connected to it to disengage from the stationary contact live assembly 6, causing the circuit breaker to switch to the open state. After the lifting rod 35 disengages from the trip bracket 41, the alarm state of the circuit breaker is activated. In some cases, when a short circuit occurs in the circuit, the current in the stationary contact energized component 6 surges instantaneously. The stationary contact energized component 6 generates sufficient magnetic attraction force to attract the magnetic attractant 81, causing the magnetic attractant 81 to move to abut against the stationary contact energized component 6. This, in turn, drives the trip push-pull rod 82 to move. The trip push-pull rod 82 drives the trip bracket 41 to rotate relative to the main insulating base 5, causing the opening and closing latch 115 and / or the lifting vertical rod 35 to disengage from the trip bracket 41, thus achieving short-circuit protection of the circuit breaker.

[0056] Alternatively, the main insulating base 5 may be provided with a rod locking slot 502 on its side; One end of the magnetic absorbing piece 81 is rotatably connected to the rod locking port 502, and the other end of the magnetic absorbing piece 81 is connected to one end of the tripping push-pull rod 82. The other end of the tripping push-pull rod 82 is rotatably connected to the tripping bracket 41. The magnetic absorbing piece 81 swings around the rod locking port 502 until it is attracted to the stationary contact energized component 6. When the magnetic absorbing piece 81 is attracted to the stationary contact energized component 6, an attraction gap 811 is formed between the two.

[0057] The magnetic attractor 81 is rotatably connected to the rod locking slot 502. One end of the magnetic attractor 81 can rotate around the rod locking slot 502, causing the tripping push-pull rod 82 at the other end to swing, so that the tripping push-pull rod 82 moves to drive the tripping bracket 41 to rotate relative to the main insulating base 5. Since one end of the magnetic attractor 81 is limited to the rod locking slot 502, it will not fully contact the stationary contact live assembly 6. Mainly, the end of the magnetic attractor 81 away from the rod locking slot 502 contacts the stationary contact live assembly 6, thus forming an adsorption gap 811 between the stationary contact live assembly 6 and the magnetic attractor 81. On the one hand, the stationary contact live assembly 6 only partially contacts the magnetic attractor 81, and the adsorption gap 811 can reduce the contact liveness of the stationary contact without affecting the magnetic force. The electrical component 6 has only direct contact area with the magnetic chuck 81, which facilitates the subsequent separation of the magnetic chuck 81 from the stationary contact energized component 6. After the short circuit problem is resolved, simply resetting the trip bracket 41 allows the trip push-pull rod 82 to rotate the magnetic chuck 81 around the rod locking port 502 to its reset state, and the magnetic chuck 81 can be readjusted to the ready-to-trigger state. On the other hand, since one end of the magnetic chuck 81 is limited to the rod locking port 502, the linear movement of the magnetic chuck 81 is restricted. Therefore, when the circuit breaker is shaken, the magnetic chuck 81 will not move to adhere to the stationary contact energized component 6 due to the shaking, ensuring that the magnetic chuck 81 only adheres to the stationary contact energized component 6 under specific high current conditions, and ensuring that the magnetic chuck 81 only responds to short circuits.

[0058] Alternatively, the magnetic sheet 81 may be provided with a magnetic through-hole 812.

[0059] The magnetic absorbing sheet 81 is provided with a magnetic absorption port 812. In this embodiment, a magnetic absorption port 812 of a specific size can be opened in the magnetic absorbing sheet 81 as needed, thereby controlling the size of the facing area between the magnetic absorbing sheet 81 and the stationary contact live component 6. The larger the facing area, the stronger the magnetic force. Adjusting the size of the magnetic absorption port 812 can prevent the magnetic force from being too large or too small.

[0060] In some embodiments, the metal connector 84 can be directly connected to the trip push-pull rod 82; in some embodiments, the trip push-pull rod 82 can be indirectly connected to the trip push-pull rod 82 through the magnetic support plate 83. Alternatively, the high-current tripping assembly 8 may also include: a magnetic sheet support plate 83 and a metal connector 84; One end of the magnetic sheet support plate 83 is rotatably connected to the rod locking port 502, and the other end of the magnetic sheet support plate 83 is connected to the release push-pull rod 82; the surface of the magnetic sheet support plate 83 is provided with a magnetic suction piece 81, and the metal connector 84 fixes the magnetic sheet support plate 83 and the magnetic suction piece 81 together.

[0061] Metal connectors 84 are respectively disposed on the surface of magnetic sheet support plate 83, which can be one side or two sides. Metal connectors 84 fix magnetic sheet support plate 83 and magnetic suction plate 81 together. When magnetic suction plate 81 moves to abut against stationary contact live assembly 6, it drives magnetic sheet support plate 83 to swing relative to rod locking port 502, thereby driving the tripping push-pull rod 82 of magnetic sheet support plate 83 to move and adjust, so that tripping bracket 41 rotates relative to main insulating base 5.

[0062] Alternatively, the high-current trip assembly 8 may also include: a lever trip elastic element 85; One end of the release push-pull rod 82 is provided with a first rod limiting part 813 and a second rod limiting part 814; The magnetic sheet support plate 83 is provided with a support plate hole 831; the release push-pull rod 82 passes through the support plate hole 831, and the support plate hole 831 is located between the first limiting part and the second limiting part 814 of the rod; the rod release elastic element 85 is provided between the first limiting part 813 of the rod and the support plate hole 831, or between the second limiting part 814 of the rod and the support plate hole 831.

[0063] One end of the release push-pull rod 82 is provided with a first rod limiting part 813 and a second rod limiting part 814, which are used to connect to the support plate hole 831 of the magnetic sheet support plate 83, so as to limit the support plate hole 831 within the first rod limiting part 813 and the second rod limiting part 814; a rod release elastic element 85 is provided between the first rod limiting part 813 and the second rod limiting part 814. The rod release elastic element 85 can be disposed between the first rod limiting part 813 and the support plate hole 831, or it can be disposed between the second rod limiting part 814 and the support plate hole 831; for example Figure 21The second limiting part 814 of the rod is closer to the end of the release push-pull rod 82 than the first limiting part 813 of the rod. When the magnetic absorbing piece 81 drives the magnetic sheet support plate 83 to rotate around the rod locking port 502, the release push-pull rod 82 moves and causes the second limiting part 814 of the rod to compress the rod release elastic member 85 towards the support plate hole 831, so that the rod release elastic member 85 contracts and stores elastic potential energy. When the magnetic absorbing piece 81 contacts the stationary contact live component 6, the rod release elastic member 85 can provide a buffering effect to avoid excessive collision when the magnetic absorbing piece 81 contacts the stationary contact live component 6 and prevent the magnetic absorbing piece 81 from deforming. In addition, the magnetic absorbing piece 81 is attached to the surface of the magnetic sheet support plate 83, and the magnetic sheet support plate 83 can provide support for the magnetic absorbing piece 81 to prevent the magnetic absorbing piece 81 from deforming. Similarly, in the embodiment where the lever release elastic element 85 is disposed between the first limit portion 813 of the lever and the support plate hole 831, the release push-pull rod 82 can also press the lever release elastic element 85 against the first limit portion 813 of the lever through the support plate hole 831, and can also provide a buffering effect when the magnetic suction piece 81 contacts the stationary contact live assembly 6.

[0064] The first limiting part 813 and / or the second limiting part 814 of the rod can be an external limiting piece, or the tripping push-pull rod 82 can be machined, for example, the tripping push-pull rod 82 can be pressed to deform it to form a shape with a limiting function.

[0065] Optimally, it also includes: coarse adjustment component 7 and support swing elastic element 501; The coarse adjustment assembly 7 includes: a coarse adjustment seat 71 and a coarse adjustment linkage 72; The coarse adjustment seat 71 is installed on the static metal bracket 62; one end of the coarse adjustment connecting rod 72 abuts against the trip bracket 41, and the trip bracket 41 is elastically pressed against one end of the coarse adjustment connecting rod 72; the other end of the coarse adjustment connecting rod 72 is movably fitted to the coarse adjustment seat 71 for adjusting the tilt angle of the trip bracket 41 on the main insulating base 5. The front side of the trip bracket 41 contacts the coarse adjusting link 72. The bracket swing elastic element 501 is disposed on the rear side of the trip bracket 41. The middle part of the trip bracket 41 is rotatably mounted on the main insulating base 5. One end of the bracket swing elastic element 501 contacts the main insulating base 5, and the other end of the bracket swing elastic element 501 contacts the trip bracket 41. The bracket swing elastic element 501 elastically presses the front side of the trip bracket 41 against the coarse adjusting link 72.

[0066] Meanwhile, a coarse adjustment seat 71 is installed on the stationary contact live assembly 6, and a coarse adjustment connecting rod 72 is threadedly installed on the coarse adjustment seat 71. For example, when the coarse adjustment connecting rod 72 is adjusted clockwise, the other end of the coarse adjustment connecting rod 72 is adjusted upwards; for example, when the coarse adjustment connecting rod 72 is adjusted counterclockwise, the other end of the coarse adjustment connecting rod 72 is adjusted downwards. The trip bracket 41 is elastically reset and rotatably installed on the main insulating base 5, that is, the trip bracket 41 is used to directly or indirectly engage the opening and closing latch 115 and / or the lifting vertical rod 35, and one end of the coarse adjustment connecting rod 72 abuts against the trip bracket 41. The upward and downward adjustment of the coarse adjustment connecting rod 72 can adjust the tilt angle of the trip bracket 41. When the tilt angle of the trip bracket 41 is adjusted to increase the contact area between the opening and closing latch 115 and / or the lifting vertical rod 35 and the trip bracket 41, the trip bracket 41 is adjusted to increase the contact area between the trip bracket 41 and the opening and closing latch 115 and / or the lifting vertical rod 35. When the stationary contact energized component 6 requires a larger current and temperature to generate sufficient deformation, the upward tilt of the stationary contact energized component 6 is greater to drive the tripping bracket 41 to swing out of the opening / closing latch 115 and / or the lifting rod 35. Similarly, when the tilt angle of the tripping bracket 41 is adjusted to reduce the contact area between the opening / closing latch 115 and / or the lifting rod 35 and the tripping bracket 41, the stationary contact energized component 6 only requires a smaller current and temperature to generate sufficient deformation, and the upward tilt of the stationary contact energized component 6 is only small enough to drive the tripping bracket 41 to swing out of the opening / closing latch 115 and / or the lifting rod 35. After the opening / closing latch 115 and / or the lifting rod 35 are disengaged from the tripping bracket 41, the opening / closing latch 115 drives the circuit breaker to trip, and the lifting rod 35 drives the circuit breaker to activate the alarm state.

[0067] The coarse adjustment link 72 is located near the front of the trip bracket 41, and the bracket swing elastic element 501 is located near the rear of the trip bracket 41. The trip bracket 41 is rotatably mounted on the main insulation base 5 between the coarse adjustment link 72 and the bracket swing elastic element 501. The bracket swing elastic element 501 elastically presses the front of the trip bracket 41 against the coarse adjustment link 72. When the coarse adjustment link 72 is adjusted, it drives the trip bracket 41 to rotate around the axis of the main insulation base 5, thereby adjusting the angle of the trip bracket 41 when adjusting its lifting and lowering. When the trip bracket 41 is adjusted to different tilt angles, the contact area of ​​the opening and closing clamp 115 and / or the lifting vertical rod 35 on the trip bracket 41 is different, thus adjusting the overload degree of the circuit breaker.

[0068] The stationary contact live assembly 6 also includes: a stationary terminal block 64; The bimetallic strip 61 is provided with a first connecting part 611, a second connecting part 612 and a third connecting part 613; the first connecting part 611 and the second connecting part 612 are spaced apart, and one end of the two are connected through the third connecting part 613; the first connecting part 611 and the second connecting part 612 are respectively installed on the main insulating base 5; the first connecting part 611 is provided with a stationary contact 63; the stationary terminal 64 is connected to the second connecting part 612; the third connecting part 613 is provided with a stationary metal bracket 62.

[0069] When the circuit is closed, the stationary contact 63 is used to contact the energized component 2 of the moving contact. The current passes through the stationary terminal 64, the second connection part 612, the third connection part 613, the first connection part 611, and the stationary contact 63. The bimetallic strip 61 is connected to the main insulating base 5 at the first connection part 611 and the second connection part 612 respectively. The third connection part 613 is not connected to the main insulating base 5. When the bimetallic strip 61 is heated, its third connection part 613 tilts relative to the first connection part 611 and the second connection part 612, causing the stationary metal bracket 62 to tilt, which in turn causes the coarse adjustment seat 71 to tilt. This drives the tripping bracket 41 to swing relative to the main insulating base 5 through the coarse adjustment linkage 72, so that the opening and closing latch 115 and / or the lifting vertical rod 35 disengage from the tripping bracket 41.

[0070] Alternatively, the coarse adjustment link 72 can be a screw, and the coarse adjustment link 72 is threaded into the coarse adjustment seat 71; The screw head of the coarse adjustment link 72 rests against the bottom of the trip bracket 41; the upper surface of the trip bracket 41 is provided with a coarse adjustment hole 401, which exposes the screw head of the coarse adjustment link 72.

[0071] The coarse adjustment linkage 72 is a screw with a threaded rod and a screw head. The screw head can be adjusted by using a screwdriver to rotate, which in turn drives the threaded rod to rotate in the coarse adjustment seat 71. The threaded rod can then move relative to the coarse adjustment seat 71, thereby adjusting the current overload regulation degree of the circuit breaker. This reduces the adjustment difficulty of the coarse adjustment linkage 72.

[0072] The upper surface of the trip bracket 41 is provided with a coarse adjustment hole 401. The screw head of the coarse adjustment link 72 rests against the lower part of the trip bracket 41. The coarse adjustment hole 401 of the trip bracket 41 exposes the screw head of the coarse adjustment link 72. The screw head of the coarse adjustment link 72 can be seen from the top of the trip bracket 41. The screw head can be easily adjusted from directly above the main insulating base 5. Although this adjustment position is close to the trip bracket 41, it does not affect the rotation adjustment of the coarse adjustment link 72. There is no need to adjust the screw head from the bottom of the main insulating base 5, which greatly reduces the difficulty of adjusting the coarse adjustment link 72.

[0073] This solution can be used to coarsely adjust the overload level based on the coarse adjustment component 7; or it can be used to finely adjust the overload level using the overload fine adjustment structure 4. Optimally, it also includes: an overload micro-adjustment structure 4; The overload micro-adjustment structure 4 includes: a release card 42, a card pivot 43, and an operating component 44; Card shaft 43 is mounted on release bracket 41; release card 42 is disposed on release bracket 41, release card 42 is provided with release surface 421; one end of release card 42 is rotatably connected to card shaft 43, and the other end of release card 42 is provided with card operation port 422; release bracket 41 is provided with connecting rod receiving groove 411 in card operation port 422; Operating component 44 includes: operating connector 441 and operating linkage 442; The operating connector 441 is connected to the card operating port 422 and is limited to the linkage receiving groove 411; the operating linkage 442 is connected to the operating connector 441 and is used to drive the operating connector 441 to swing around the card rotating shaft 43 to adjust the horizontal position of the release surface 421.

[0074] For fine adjustment of overload level, the release card 42 is disposed on the surface of the release bracket 41. One end of the release card 42 is rotatably connected to the card shaft 43, and the other end of the release card 42 is provided with a card operation port 422. The card operation port 422 is used to connect the operation connector 441. The operation connector 441 extends into the connecting rod receiving groove 411. The connecting rod receiving groove 411 provides movement space for the operation connector 441, allowing the operation connector 441 to be limited within the connecting rod receiving groove 411, which can limit the swing amplitude of the release card 42. The operation connecting rod 442 is connected to the operation connector 441. When the operation connecting rod 442 moves, it can drive the operation connector 441 to move within the connecting rod receiving groove 411, thereby causing the position of the card operation port 422 to change, driving the release card 42 to swing around the card shaft 43 to adjust the horizontal position of the release card 42 on the release bracket 41. The release card 42 is provided with a release surface 42. 1. Primarily used to engage with the opening / closing latch 115 for circuit breaker switching or the lifting rod 35 for alarm devices. The opening / closing latch 115 is indirectly connected to the moving contact of the circuit breaker, and the lifting rod 35 indirectly triggers the alarm mechanism. When the circuit breaker is in the closed state, the opening / closing latch 115 and / or the lifting rod 35 will engage with the tripping surface 421. When the circuit breaker triggers the tripping mechanism, the bimetallic strip 61 undergoes thermal deformation and tilts upwards, which can directly or indirectly drive the tripping bracket. 41 swings, thereby disengaging the opening / closing latch 115 and / or the lifting rod 35 from the tripping surface 421. The tripping surface 421 can serve as a platform for the circuit breaker to trigger opening and activate the alarm. In this scheme, the tripping surface 421 is adjustable in the horizontal position of the tripping bracket 41. When the driving operating linkage 442 moves, the contact area between the tripping surface 421 and the opening / closing latch 115 and / or the lifting rod 35 can be adjusted, thereby adjusting the overload degree of the circuit breaker's opening / closing or alarm. For example, when the horizontal position of the tripping surface 421 is adjusted to increase the contact area with the opening / closing latch 115 (and / or the lifting rod 35), the circuit breaker requires a larger current and temperature to cause the bimetallic strip 61 to tilt upwards and drive the tripping bracket 41 to swing, thereby causing the opening / closing latch 115 and / or the lifting rod 35 to disengage from the tripping surface 421. When the horizontal position of the tripping surface 421 is adjusted to reduce the contact area with the opening / closing latch 115 (and / or the lifting rod 35), the circuit breaker requires only a smaller current and temperature to cause the bimetallic strip 61 to tilt upwards and drive the tripping bracket 41 to swing, thereby causing the opening / closing latch 115 and / or the lifting rod 35 to disengage from the tripping surface 421. Thus, the coarse adjustment linkage 72 can conveniently adjust the overload level of the circuit breaker's switching or alarm, and the operating linkage 442 can also be used to control the overload level of the switching or alarm, solving the problems of inconvenient and inaccurate adjustment of the circuit breaker's overload level.

[0075] The opening and closing structure 10 is optimized to include a circuit breaker handle 45; The overload micro-adjustment structure 4 also includes: a handle adjustment lever 46; The trip bracket 41 is rotatably mounted on the main insulating base 5 via the trip swing shaft 412; the trip bracket 41 rotates around the trip swing shaft 412; the operating linkage 442 is provided with a shaft mating part 4421 and a rod operating part 4422; the shaft mating part 4421 is movably sleeved on the trip swing shaft 412; the rod operating part 4422 is connected to the operating connector 441; The main insulating base 5 is connected to the inner side of the circuit breaker handle 45; the handle adjustment rod 46 is rotatably mounted on the circuit breaker handle 45, and the handle adjustment rod 46 passes through the inner and outer sides of the circuit breaker handle 45; one end of the handle adjustment rod 46 is located on the outer side of the circuit breaker handle 45 and is used to drive the handle adjustment rod 46 to rotate; one end of the handle adjustment rod 46 extends to the inner side of the circuit breaker handle 45 and contacts the rod operating part 4422, and is used to drive the rod operating part 4422 to move.

[0076] The trip bracket 41 can swing within the circuit breaker and rotate around the trip swing shaft 412. In this design, the shaft mating part 4421 is installed on the trip swing shaft 412, and the rod operating part 4422 is connected to the operating connector 441. Therefore, during the swing of the trip bracket 41, since the operating connector 441 is limited to the connecting rod receiving groove 411, the operating connecting rod 442 installed on the trip swing shaft 412 can rotate with the trip bracket 41. Thus, even when the trip bracket 41 is adjusted to any angle, the position of the trip card 42 can still be controlled by the operating connecting rod 442 to control the overload degree of the switch or alarm. Generally, the main insulation base 5 of the circuit breaker is installed inside the electrical equipment, with only the circuit breaker handle 45 exposed outside the electrical equipment. The circuit breaker handle 45 is the mechanism for closing and opening the circuit breaker. When the circuit breaker is adjusted to the closing position, the circuit breaker's opening / closing latch 115 and / or lifting rod 35 will engage with the tripping surface 421. When the circuit breaker is adjusted to the opening position, the circuit breaker's opening / closing latch 115 and / or lifting rod 35 will disengage from the tripping surface 421. In this embodiment, the handle adjustment lever 46 is installed on the circuit breaker handle 45. The handle adjustment lever 46 passes through the outer and inner sides of the circuit breaker handle 45. The handle adjustment lever 46 contacts the second swing part 4432 on the inner side of the circuit breaker handle 45. One end of the handle adjustment lever 46 and the second swing part 4432 can be connected or limited. When the worker rotates the other end of the handle adjustment lever 46 on the outer side of the circuit breaker handle 45 to adjust it, the rotation of the handle adjustment lever 46 drives the second swing part 4432 to rotate around the middle of the swing operating seat 443, thereby driving the drive shaft of the first swing part 4431 to move in the groove 4423 of the trip swing shaft 412, thereby adjusting the overload level of the control switch or alarm. Therefore, this solution allows the overload level of the circuit breaker to be adjusted directly at the circuit breaker handle 45 without removing the entire circuit breaker from the electrical equipment.

[0077] In one embodiment, the operating component 44 further includes: a swing operating seat 443; the two ends of the swing operating seat 443 are rotatably connected to the main insulating base 5; one end of the swing operating seat 443 is provided with a first swing part 4431, and the shaft mating part 4421 is provided with a shaft mating groove 4423, the first swing part 4431 extending into the shaft mating groove 4423; the other end of the swing operating seat 443 is provided with a second swing part 4432; the second swing part 4432 is used to drive the swing operating seat 443 to rotate, and the shaft mating groove 4423 is moved to the release swing shaft 412 by the first swing part 4431, and the lever operating part 4422 drives the operating connector 441 to move to the card operating port 422. The tripping bracket 41 is rotatably connected to the main insulating base 5, and the tripping bracket 41 rotates around the tripping swing shaft 412 on the main insulating base 5; the ends of the swinging operating seat 443 are respectively provided with a first swinging part 4431 and a second swinging part 4432, and the two ends are rotatably connected to the main insulating base 5; in the state before and after the shaft mating part 4421 rotates, the first swinging part 4431 remains inserted into the shaft mating groove 4423; the second swinging part 4432 is used to adjust the rotation of the swinging operating seat 443, and its rotation around the swinging operating seat 443... The central part rotates, causing the first swing part 4431 to swing, which in turn causes the first swing part 4431 to move the drive shaft mating groove 4423 to the trip swing shaft 412, and the shaft mating part 4421 to move to the trip swing shaft 412. This, in turn, drives the operating connector 441 to move to the card operating port 422 and the connecting rod receiving groove 411 via the lever operating part 4422, so that the trip card 42 rotates around the card rotating shaft 43. The overload level of the switch or alarm can be controlled by the swing of the swing operating seat 443, which reduces the difficulty of controlling overload.

[0078] Optimally, the operating link 442 and the tripping swing shaft 412 are located between the tripping bracket 41 and the main insulating base 5, and the operating connector 441 is provided with a connector hole 4411; the rod operating part 4422 passes through the link receiving groove 411 and is confined within the connector hole 4411. The operating link 442 is located between the tripping bracket 41 and the main insulating base 5, based on the tripping bracket 41 being confined within the tripping swing shaft 412, such as Figure 15-17 The lever operating part 4422 extends from bottom to top into the connecting rod receiving groove 411 and the connecting head hole 4411. When the trip bracket 41 rotates around the trip swing shaft 412, the lever operating part 4422 will not cause positional resistance to the trip bracket 41. The lever operating part 4422 can rotate adaptively around the trip swing shaft 412 to match the rotation of the trip bracket 41, so that adjusting the overload level does not affect the closing and opening of the circuit.

[0079] Optimally, the straight extension direction of the card operation port 422 is relatively inclined to the extension direction of the connecting rod receiving groove 411; the outer side of the operation connector 441 is provided with a connector slot 4412, which is engaged with the card operation port 422, and the operation connector 441 moves along the extension direction of the card operation port 422. The extension direction of the card operation port 422 is relatively inclined to the extension direction of the connecting rod receiving groove 411; the connector slot 4412 of the operation connector 441 is engaged with the card operation port 422, and the inner sidewall of the card operation port 422 abuts against the inner sidewall of the connector slot 4412. The card operation port 422 can guide the operation connector 441 to move linearly; since the rod operation part 4422 is for rotational adjustment, the linear movement of the operation connector 441 is equivalent to the inclined movement in the connecting rod receiving groove 411; in this embodiment, the overload degree of the switch or alarm can be located by adjusting the position of the operation connector 441 in the card operation port 422, thereby fine-tuning the overload degree of the switch or alarm.

[0080] Optimally, the overload micro-adjustment structure 4 further includes: a locking plate limiting spring 47; the locking plate limiting spring 47 is installed on the tripping bracket 41 and is located at the beginning and end points of the rotation range of the tripping card 42; the locking plate limiting spring 47 elastically contacts the tripping card 42. The locking plate limiting spring 47 is set on the tripping bracket 41 and is located at the beginning and end points of the rotation range of the tripping card 42; the locking plate limiting spring 47 is used to position the tripping card 42 to provide tactile feedback when indirectly adjusting the tripping card 42 from the outside of the circuit breaker; when the tripping card 42 rotates to the beginning and end points, the locking plate limiting spring 47 elastically contacts the tripping card 42, and the locking plate limiting spring 47 restricts the tripping card 42 from continuing to rotate. When the operator uses the handle adjustment lever 46 to indirectly adjust the tripping card 42, he can feel that the tripping card 42 has reached the beginning or end point of the tripping card 42.

[0081] Optimally, some of the locking plate limiting springs 47 are provided with spring L-shaped grooves 471; the spring L-shaped grooves 471 are provided on the side of the tripping bracket 41; the spring L-shaped grooves 471 press the tripping card 42 against the surface of the tripping bracket 41. Some of the locking plate limiting springs 47 have spring L-shaped grooves 471, which are elastic and can press the tripping card 42 against the tripping bracket 41; when the tripping card 42 rotates, the tripping card 42 remains in contact with the tripping bracket 41, and the surface of the tripping card 42 and the tripping bracket 41 can maintain planar contact, which can prevent the tripping card 42 from tilting out of the tripping bracket 41, and maintain the contact stability of the tripping card 42 with the opening and closing clamp head 115 and / or the lifting vertical rod 35.

[0082] Optimally, the alarm mechanism 3 includes: an alarm frame 31, an alarm conductive component 32, an alarm push-pull rod 33, a lifting crossbar 34, and a lifting vertical rod 35; The alarm conductive component 32 is electrically insulated and mounted on the alarm frame 31; the alarm push-pull rod 33 is repositionable and movable on the alarm frame 31; the alarm push-pull rod 33 is provided with a V-shaped opening 331, and the V-shaped opening 331 is provided with a guide inclined wall 332; the lifting crossbar 34 is vertically limited to the alarm frame 31 and extends laterally into the V-shaped opening 331. The alarm frame 31 has a frame plane 311, and the frame plane 311 has a frame transverse groove 312; the lifting crossbar 34 is transversely connected to the lifting vertical bar 35; the lifting vertical bar 35 can be lifted and moved through the frame transverse groove 312. When the circuit breaker is closed, the opening / closing latch 115 engages with the tripping bracket 41. The opening / closing structure 10 drives the alarm push-pull rod 33 to move, which in turn moves the guide inclined wall 332. The guide inclined wall 332 drives the lifting horizontal bar 34 to move up and down, which in turn moves the lifting vertical bar 35 up and down in the transverse groove 312 of the frame. When one end of the lifting vertical bar 35 touches the tripping bracket 41, the lifting horizontal bar 34 remains in contact with the alarm conductive component 32, so that the alarm conductive component 32 and the lifting horizontal bar 34 are electrically connected. When the circuit breaker is tripped, the opening / closing latch 115 disengages from the tripping bracket 41. The tripping bracket 41 is used to drive the lifting vertical rod 35 to reset. The lifting vertical rod 35 drives the lifting horizontal rod 34 to disengage from the alarm conductive component 32. The alarm conductive component 32 then issues an alarm.

[0083] Specifically, the alarm conductive component 32 is electrically insulated from the alarm frame 31, and there is no electrical conductivity between them. For example, the installation position of the alarm conductive component 32 between the alarm frame 31 is provided with insulating material to prevent direct contact between the alarm conductive component 32 and the frame 31. The alarm push-pull rod 33 is provided with a V-shaped opening 331, and the V-shaped opening 331 has a guide inclined wall 332. The lifting crossbar 34 is located inside the V-shaped opening 331. When the circuit breaker's switching mechanism is triggered, it directly or indirectly drives the alarm push-pull rod 33 to move repositionably on the alarm frame 31. The alarm push-pull rod 33 drives the guide inclined wall 332 to move, and the guide inclined wall 332 contacts the lifting crossbar 34. The guide inclined wall 332 guides the lifting crossbar 34 to adjust its height. The lifting crossbar 34 can move to contact the alarm conductive component 32. The lifting crossbar 34 is conductive and is electrically connected to the alarm conductive component 32 when it contacts the alarm conductive component 32. Figure 10 An alarm conductive component 32 and a lifting crossbar 34 form a passage. An alarm device 30 with alarm function, such as an alarm light or alarm sound, can be installed on this passage as needed to achieve the function of circuit breaker alarm. In one embodiment, when the alarm push-pull rod 33 drives the V-shaped port 331 to reset, the alarm push-pull rod 33 can drive the lifting crossbar 34 to reset, and the lifting crossbar 34 is disengaged from the alarm conductive component 32.

[0084] The lifting horizontal bar 34 and the lifting vertical bar 35 can be connected in a known manner; the lifting horizontal bar 34 extends laterally, and the lifting vertical bar 35 extends laterally; when the V-shaped opening 331 of the alarm push-pull rod 33 drives the lifting horizontal bar 34 to move up and down, it will also drive the lifting vertical bar 35 to move up and down, thereby driving the lifting vertical bar 35 to move up and down in the transverse slot 312 of the frame; the circuit breaker is provided with an adjustable trip bracket 41; the lifting vertical bar 35 can be raised and lowered to abut against the trip bracket 41, at which time the lifting horizontal bar 34 remains in contact with the alarm conductive component 32, and the lifting horizontal bar 34 and the alarm conductive component... When circuit 32 is formed, it can be considered as the closed state of the circuit breaker. When the circuit breaker's tripping mechanism responds, it directly or indirectly adjusts the movement of the tripping bracket 41, for example, by driving the tripping bracket 41 to move or flip. The tripping bracket 41 moves in the reset direction of the lifting vertical rod 35 and drives the lifting vertical rod 35 to reset, causing the lifting horizontal rod 34 to reset and move. The lifting horizontal rod 34 disengages from the alarm conductive component 32, and the circuit formed between the lifting horizontal rod 34 and the alarm conductive component 32 is broken. At this time, it can be considered as the open state of the circuit breaker, or as a pre-alarm state when the circuit breaker is in the closed state.

[0085] Optimally, the trip bracket 41 is rotatable and adjustable; the lifting rod 35 is horizontally adjustable and set in the transverse groove 312 of the frame to adjust the contact area between the lifting rod 35 and the trip bracket 41. The lifting rod 35 is adjustable in the horizontal position of the transverse slot 312 of the frame. For example, when the lifting rod 35 moves towards one end of the transverse slot 312 of the frame, the contact area between the lifting rod 35 and the tripping bracket 41 can be increased; when the lifting rod 35 moves towards the other end of the transverse slot 312 of the frame, the contact area between the lifting rod 35 and the tripping bracket 41 can be reduced. When the circuit breaker's tripping mechanism responds, its bimetallic strip 61 is heated and tilted upwards, directly or indirectly driving the tripping bracket 41 to gradually swing upwards. The larger the contact area between the lifting rod 35 and the tripping bracket 41, the greater the heat required for the bimetallic strip 61, which can delay the alarm response mechanism; conversely, the smaller the contact area between the lifting rod 35 and the tripping bracket 41, the greater the swing angle required for the tripping bracket 41, which can advance the alarm response mechanism.

[0086] Optimally, it also includes: a locking elastic element 37; one end of the locking elastic element 37 is connected to the alarm frame 31, and the other end of the locking elastic element 37 is connected to the lifting vertical rod 35; one end of the lifting vertical rod 35 is elastically pressed against the trip bracket 41; the locking elastic element 37 is used to drive the lifting vertical rod 35 to reset when it is disengaged from the trip bracket 41, so that the lifting horizontal rod 34 is disengaged from the alarm conductive component 32. The guide inclined wall 332 of the alarm push-pull rod 33 guides the lifting horizontal rod 34 to adjust its height, and drives the lifting vertical rod 35 to rise and fall in the transverse groove 312 of the frame. During this process, the locking elastic element 37 stores elastic potential energy, which causes the lifting vertical rod 35 to elastically press against the trip bracket 41; the alarm mechanism 3 of the circuit breaker in this solution has two alarm mechanisms. One mechanism is that the trip bracket 41 instantly drives the lifting horizontal rod 34 to reset, which is mainly for the short circuit state of the circuit breaker. The trip bracket 41 directly drives the lifting horizontal rod 34 to reset and move, so that the lifting horizontal rod 34 is instantly disengaged from the alarm conductive component 32. Component 32; Another mechanism is that the bimetallic strip 61 gradually tilts upward when heated, so that the trip bracket 41 swings slowly. At this time, the contact angle and contact position between the lifting vertical rod 35 and the trip bracket 41 gradually change. When the trip bracket 41 rotates to the point where it can no longer limit the lifting vertical rod 35, for example, the two gradually change from planar contact to line-plane contact and then separate from each other. The elastic potential energy stored in the locking elastic element 37 drives the lifting vertical rod 35 to reset, thereby driving the lifting horizontal rod 34 to reset, so that the lifting horizontal rod 34 is disengaged from the alarm conductive component 32, which is mainly for the thermal protection state of the circuit breaker.

[0087] Optimally, it also includes: a pole leveling adjustment assembly 38; the pole leveling adjustment assembly 38 includes: a pole adjustment seat 381 and a pole adjustment column 382; the pole adjustment seat 381 is mounted on the alarm frame 31; the pole adjustment column 382 is movably adjustable and limited to the pole adjustment seat 381, one end of the pole adjustment column 382 moves to be close to or away from the lifting vertical pole 35, and the lifting vertical pole 35 elastically contacts the pole adjustment column 382; the pole adjustment column 382 is used to adjust the horizontal position of the lifting vertical pole 35 in the transverse groove 312 of the frame, so as to adjust the contact area between the lifting vertical pole 35 and the tripping bracket 41. A lever adjustment seat 381 is disposed on the alarm frame 31, and a lever adjustment column 382 is movably and adjustablely limited to the lever adjustment seat 381 (for example, in one embodiment, the lever adjustment column 382 is threadedly engaged with the lever adjustment seat 381). When the lever adjustment column 382 moves, it can horizontally approach or move away from the lifting vertical rod 35 of the transverse slot 312 of the frame. Since the lifting vertical rod 35 is horizontally adjustable in the transverse slot 312 of the frame, there is a retaining elastic element 37 between the lifting vertical rod 35 and the alarm frame 31. The retaining elastic element 37 elastically presses the lifting vertical rod 35 against the lever adjustment column 382, ​​thereby accurately adjusting the contact area between the lever adjustment column 382 and the tripping bracket 41 to control the overload degree of the circuit breaker's alarm device. Figure 11When the rod adjusting column 382 moves away from the lifting rod 35, the retaining elastic element 37 presses the lifting rod 35 against the rod adjusting column 382, ​​bringing the lifting rod 35 closer to the trip bracket 41. This increases the contact area between the lifting rod 35 and the trip bracket 41, thus increasing the current overload that triggers the alarm. Conversely, when the rod adjusting column 382 moves closer to the lifting rod 35, the lifting rod 35 moves further away from the trip bracket 41, reducing the contact area between the lifting rod 35 and the trip bracket 41, thus decreasing the current overload that triggers the alarm.

[0088] Alternatively, the lifting vertical rod 35 is provided with a vertical rod recess 351; the lifting horizontal rod 34 is engaged with the vertical rod recess 351, and the lifting vertical rod 35 rotates around the lifting horizontal rod 34 through the vertical rod recess 351. The lifting vertical rod 35 is provided with a vertical rod notch 351. The lifting vertical rod 35 and the lifting horizontal rod 34 are preferably rotatably connected. The lifting vertical rod 35 is connected to a locking elastic element 37, which elastically presses the lifting vertical rod 35 against the alarm frame 31, allowing the lifting vertical rod 35 to press against the transverse groove 312 of the frame. The lifting vertical rod 35 can rotate around the lifting horizontal rod 34 through the vertical rod notch 351, allowing the lifting vertical rod 35 to swing at a certain angle relative to the lifting horizontal rod 34 to adjust the horizontal position of the lifting vertical rod 35 in the transverse groove 312 of the frame. The lifting vertical rod 35 elastically presses against the release bracket 41. Thus, the vertical rod notch 351 can keep the lifting horizontal rod 34 raised and lowered in the same place, and also allows the lifting vertical rod 35 to be adjusted in the horizontal direction.

[0089] Optimally, the alarm frame 31 is provided with a vertical guide port 313 and a horizontal guide port 314; the horizontal guide port 314 is connected to one end of one of the vertical guide ports 313; the lifting crossbar 34 extends into the vertical guide port 313 and moves up and down along the vertical guide port 313; the alarm push-pull rod 33 passes through the horizontal guide port 314 and the V-shaped opening 331 moves along the horizontal guide port 314. The alarm frame 31 may have vertical guide openings 313 on both sides, and a horizontal guide opening 314 connected to it may be set near the vertical guide opening 313 on one side; the lifting crossbar 34 is movable and limited to the vertical guide opening 313, which can provide guidance for the lifting crossbar 34; the locking elastic element 37 presses the lifting vertical bar 35 into the horizontal groove 312 of the frame, and the lifting vertical bar 35 then presses the lifting crossbar 34 into the vertical guide opening 313. The vertical bar notch 351 can keep the lifting crossbar 34 in the same position for lifting and lowering, and can also adjust the horizontal position of the lifting vertical bar 35 relative to the lifting crossbar 34 when rotating, so as to adjust the contact area between the adjusting rod adjusting column 382 and the tripping bracket 41, thereby controlling the overload degree when the circuit breaker triggers the alarm. Meanwhile, since the transverse guide opening 314 of the frame is connected to one end of the vertical guide opening 313 of the frame, when the V-shaped opening 331 moves laterally along the transverse guide opening 314 of the frame, it can pass through the vertical guide opening 313 of the frame. When the guide inclined wall 332 passes laterally through the vertical guide opening 313 of the frame, the guide inclined wall 332 can drive the lifting crossbar 34 of the vertical guide opening 313 of the frame to move up and down. As a result, the movement of the alarm push-pull rod 33 and the lifting crossbar 34 on the alarm frame 31 is smoother, which can prevent the alarm push-pull rod 33 and the lifting crossbar 34 from deviating from the movement path and ensure that the alarm push-pull rod 33 contacts the lifting crossbar 34.

[0090] Optimally, it also includes: a hollow rotating shaft 39; the hollow rotating shaft 39 is located at the V-shaped opening 331, and the hollow rotating shaft 39 is sleeved on the outside of the lifting crossbar 34; the guide inclined wall 332 moves to contact the hollow rotating shaft 39. The hollow rotating shaft 39 is sleeved on the lifting crossbar 34, and the hollow rotating shaft 39 replaces the lifting crossbar 34 in contacting the V-shaped opening 331; on the one hand, the outer diameter of the hollow rotating shaft 39 can be designed to be larger than the outer diameter of the lifting crossbar 34, which can increase the space occupied by the hollow rotating shaft 39 in the V-shaped opening 331, so that the guide inclined wall 332 indirectly contacts the lifting crossbar 34 through the hollow rotating shaft 39, and the guide inclined wall 332 is more likely to contact the hollow rotating shaft 39, avoiding the need to extend the length of the guide inclined wall 332 or extend the movement distance of the alarm push-pull rod 33 due to the outer diameter of the lifting crossbar 34 being too small; thus, the lifting crossbar 33 of this embodiment 4. The lifting crossbar 34 with an excessively large outer diameter is not required, which reduces the difficulty of driving the lifting crossbar 34 to rise and fall using the V-shaped port 331. On the other hand, the hollow rotating shaft 39 replaces the lifting crossbar 34 in contact with the V-shaped port 331. The V-shaped port 331 does not directly contact the lifting crossbar 34. In this embodiment, the lifting crossbar 34 can be replaced with the hollow rotating shaft 39 as needed, which can reduce the surface wear caused by the long-term contact between the V-shaped port 331 and the lifting crossbar 34. This avoids the situation where the lifting crossbar 34 is not easy to contact the V-shaped port 331 after long-term use and wear, thus preventing the problem of the circuit breaker alarm response being untimely.

[0091] Optimally, the alarm conductive component 32 includes: an L-shaped metal sheet 321, a connecting pin 322, and an alarm wiring terminal 323; the L-shaped metal sheet 321, the connecting pin 322, and the alarm wiring terminal 323 are connected as one unit, and the three are electrically insulated and limited to the alarm frame 31; the L-shaped metal sheet 321 is disposed on the inner side of the alarm frame 31; the alarm wiring terminal 323 is disposed on the outer side of the alarm frame 31; when the guide inclined wall 332 drives the lifting crossbar 34 to move to contact the L-shaped metal sheet 321, the L-shaped metal sheet 321, the connecting pin 322, the alarm wiring terminal 323, and the lifting crossbar 34 are electrically connected. The L-shaped metal plate 321, connecting pin 322, and alarm terminal 323 are respectively located on the alarm frame 31. Insulating pads can be added between the three and the alarm frame 31 as needed. The L-shaped metal plate 321 is located inside the alarm frame 31. When the lifting bar 34 moves to contact, the lifting bar 34 and the L-shaped metal plate 321 are electrically connected. The lifting bar 34 and the L-shaped metal plate 321 can be connected to circuit components such as power supply and alarm through wires. When the lifting bar 34 moves to contact the L-shaped metal plate 321, the L-shaped metal plate 321, connecting pin 322, and alarm terminal 323 form a circuit, thereby causing the alarm to sound.

[0092] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An oil-immersed circuit breaker, characterized in that, include: Main insulating base, opening and closing structure, stationary contact energized assembly, high current tripping assembly, moving contact energized assembly, and alarm mechanism; The high-current tripping assembly is provided with a tripping bracket, which is rotatably connected to the main insulating base; the fixed end of the stationary contact energized assembly is installed on the main insulating base, and the movable end of the stationary contact energized assembly is connected to the tripping bracket; when the movable end of the stationary contact energized assembly is heated, it tilts up, causing the tripping bracket to swing. The moving contact energized component is movably mounted on the main insulating base; the opening and closing structure is provided with an opening and closing latch; the opening and closing structure is connected to the moving contact energized component and is used to drive the moving contact energized component to move, causing the moving contact energized component to contact or disengage from the stationary contact energized component; the alarm mechanism is provided with a lifting vertical rod; When the circuit breaker is closed, the opening / closing latch engages with the tripping bracket, keeping the moving contact energized component in contact with the stationary contact energized component; the lifting rod abuts against the tripping bracket. When the circuit breaker is tripped, the opening / closing latch and the lifting rod disengage from the tripping bracket, and the alarm mechanism issues an alarm.

2. The oil-immersed circuit breaker according to claim 1, characterized in that, The opening and closing structure includes: a multi-piece connecting rotating mechanism and a circuit breaker handle; The moving contact energized assembly includes: an opening / closing insulating bracket and a moving contact; The moving contact is connected to the front of the opening and closing insulating bracket; the multi-plate connecting rotating mechanism is installed on the opening and closing insulating bracket; the tripping bracket has a tripping surface at the rear of the opening and closing insulating bracket; The multi-plate connecting rotation mechanism includes: a first support shaft, a second support shaft, a third support shaft, a fourth support shaft, and multiple plate-like structures; The first support shaft, the third support shaft, and the second support shaft are arranged in a front-to-back order. The sheet-like structure is divided into a push-pull plate for opening and closing the gate, a rear support plate, an upper swing bend plate, a lower swing bend plate, a gate opening and closing clamp, a straight connecting plate, and a front support plate. The front end of the opening / closing push-pull plate is rotatably connected to one end of the direct connecting plate, the other end of the direct connecting plate is rotatably connected to one end of the front support plate, the other end of the front support plate is rotatably connected to the third support shaft, and the third support shaft is connected to the opening / closing insulating bracket; the direct connecting plate and the front support plate are rotatably connected through the fourth support shaft. The first support shaft is rotatably connected to the lower part of the opening / closing push-pull plate; one end of the lower swing bend and one end of the upper swing bend are rotatably connected to the rear of the opening / closing push-pull plate; the other end of the lower swing bend is rotatably connected to one end of the rear support plate; the other end of the rear support plate is rotatably connected to the second support shaft, which is rotatably connected to the opening / closing insulating bracket; the other end of the upper swing bend is rotatably connected to the opening / closing latch, which is rotatably connected between the two ends of the rear support plate via a closing shaft; the opening / closing latch is provided with a locking part; The circuit breaker handle drives the opening / closing push-pull plate to rotate clockwise around the first support shaft. The opening / closing push-pull plate drives the direct connecting piece to rotate clockwise around the fourth support shaft, causing the front support piece to move downward relative to the opening / closing push-pull plate. The third support shaft drives the moving contact of the opening / closing insulating bracket to move downward. The upper swing bend drives the opening / closing clamp to rotate counterclockwise around the closing shaft. The lower swing bend drives the rear support piece to rotate counterclockwise around the second support shaft. The locking part flips counterclockwise to be located behind the rear support piece. The locking part flips to lock onto the tripping surface to fix the position of the moving contact.

3. The oil-immersed circuit breaker according to claim 2, characterized in that, The moving contact energized assembly includes: an opening and closing insulating bracket, a moving contact limiting assembly, and a moving contact; The opening and closing insulating bracket is provided with a movable contact mounting groove, and the opening above the movable contact mounting groove is provided with a card pressing block; The moving contact limiting assembly includes: a U-shaped base, a moving contact elastic element, and a spring clip; A base wiring plate is provided above the U-shaped base, and the base wiring plate extends out of the opening above the movable contact mounting slot; the U-shaped base is movably limited within the movable contact mounting slot; the lower part of the U-shaped base extends out of the opening below the movable contact mounting slot and is connected to the movable contact point; one end of the movable contact elastic element contacts the U-shaped base; the other end of the movable contact elastic element is located at the opening of the movable contact mounting slot and contacts the spring card; the spring card has a card limiting part, and the movable contact elastic element elastically presses the card limiting part against the card pressing block, and the base wiring plate elastically presses against the opening of the movable contact mounting slot.

4. The oil-immersed circuit breaker according to claim 1, characterized in that, The stationary contact live assembly includes: a bimetallic strip, a stationary metal support, and a stationary contact; One end of the bimetallic strip is mounted on the main insulating base; the other end of the bimetallic strip is provided with the static metal bracket; the static metal bracket is connected to the tripping bracket; and the static contact is connected to the bimetallic strip.

5. An oil-immersed circuit breaker according to claim 4, characterized in that, The high-current tripping assembly includes: a magnetic absorbing plate and a tripping push-pull rod; The magnetic locating piece is movably disposed on the main insulating base; one end of the tripping push-pull rod is connected to the magnetic locating piece, and the other end of the tripping push-pull rod contacts the tripping bracket; the stationary contact energized component becomes magnetic after being energized, and is used to magnetically attract the magnetic locating piece; when the magnetic locating piece moves to abut against the stationary contact energized component, the tripping push-pull rod drives the tripping bracket to rotate relative to the main insulating base.

6. An oil-immersed circuit breaker according to claim 5, characterized in that, The main insulating base is provided with a rod locking slot on its side; One end of the magnetic absorbing piece is rotatably connected to the rod locking slot, and the other end of the magnetic absorbing piece is connected to one end of the tripping push-pull rod. The other end of the tripping push-pull rod is rotatably connected to the tripping bracket. The magnetic absorbing piece swings around the rod locking slot until it is attracted to the stationary contact energized component. When the magnetic absorbing piece is attracted to the stationary contact energized component, an attraction gap is formed between the two.

7. An oil-immersed circuit breaker according to claim 4, characterized in that, Also includes: Coarse adjustment components and support swing elastic element; The coarse adjustment assembly includes: a coarse adjustment seat and a coarse adjustment linkage; The coarse adjustment seat is installed on the static metal bracket; one end of the coarse adjustment connecting rod abuts against the tripping bracket, and the tripping bracket elastically presses against one end of the coarse adjustment connecting rod; the other end of the coarse adjustment connecting rod is movably fitted to the coarse adjustment seat for adjusting the tilt angle of the tripping bracket on the main insulating base. The front side of the tripping bracket contacts the coarse adjustment link, the bracket swing elastic element is disposed on the rear side of the tripping bracket, and the middle part of the tripping bracket is rotatably mounted on the main insulating base; one end of the bracket swing elastic element contacts the main insulating base, and the other end of the bracket swing elastic element contacts the tripping bracket, and the bracket swing elastic element elastically presses the front side of the tripping bracket against the coarse adjustment link.

8. An oil-immersed circuit breaker according to claim 7, characterized in that, Also includes: Overload micro-adjustment structure; The overload micro-adjustment structure includes: a deactivated card, a card pivot, and an operating component; The card pivot is mounted on the release bracket; the release card is disposed on the release bracket, and the release card has a release surface; one end of the release card is rotatably connected to the card pivot, and the other end of the release card has a card operation port; the release bracket has a connecting rod receiving groove at the card operation port; The operating components include: an operating connector and an operating linkage; The operating connector is connected to the card operating port and is limited to the linkage receiving groove; the operating linkage is connected to the operating connector and is used to drive the operating connector to swing around the card rotating shaft to adjust the horizontal position of the release surface.

9. An oil-immersed circuit breaker according to claim 8, characterized in that, The opening and closing structure is equipped with a circuit breaker handle; The overload micro-adjustment structure also includes: a handle adjustment lever; The tripping bracket is rotatably mounted on the main insulating base via a tripping swing shaft; the tripping bracket rotates around the tripping swing shaft; The operating linkage has a shaft mating part and a rod operating part; the shaft mating part is movably sleeved on the release swing shaft; the rod operating part is connected to the operating connector. The main insulating base is connected to the inner side of the circuit breaker handle; the handle adjustment rod is rotatably mounted on the circuit breaker handle, and the handle adjustment rod passes through the inner and outer sides of the circuit breaker handle; one end of the handle adjustment rod is located on the outer side of the circuit breaker handle and is used to drive the handle adjustment rod to rotate; one end of the handle adjustment rod extends to the inner side of the circuit breaker handle and contacts the rod operating part, and is used to drive the rod operating part to move.

10. An oil-immersed circuit breaker according to any one of claims 1-9, characterized in that, The alarm mechanism includes: an alarm frame, an alarm conductive component, an alarm push-pull rod, a lifting horizontal bar, and a lifting vertical bar; The alarm conductive component is electrically insulated and mounted on the alarm frame; the alarm push-pull rod is repositionably movable on the alarm frame; the alarm push-pull rod is provided with a V-shaped opening, and the V-shaped opening is provided with a guide inclined wall; the lifting crossbar is vertically limited to the alarm frame and extends laterally into the V-shaped opening; The alarm frame has a frame plane, and the frame plane has a frame transverse slot; the lifting crossbar is transversely connected to the lifting vertical bar; the lifting vertical bar can be lifted and moved through the frame transverse slot; When the circuit breaker is closed, the circuit breaker opening / closing latch engages with the tripping bracket. The circuit breaker opening / closing structure drives the alarm push-pull rod to move, which in turn moves the guide inclined wall. The guide inclined wall drives the lifting horizontal bar to move up and down, which in turn moves the lifting vertical bar up and down in the transverse slot of the frame until one end of the lifting vertical bar abuts against the tripping bracket. At this point, the lifting horizontal bar remains in contact with the alarm conductive component, making the alarm conductive component conductively connected to the lifting horizontal bar. When the circuit breaker is tripped, the opening / closing latch disengages from the tripping bracket, which drives the lifting vertical rod to reset. The lifting vertical rod then drives the lifting horizontal rod to disengage from the alarm conductive component; the alarm conductive component then issues an alarm.

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