A circuit breaker applicable to marine ship equipment

Abstract

The present invention relates to the technical field of circuit breakers, and specifically discloses a circuit breaker suitable for marine ship equipment, comprising a mounting frame, a circuit breaker housing and a locking mechanism, wherein the locking mechanism comprises an upper hanging part, a lower hanging part and a locking assembly, and a reset elastic part is also arranged on the circuit breaker housing; the locking assembly comprises a rotating part and an unlocking pull rod, the rotating part comprises a lever and an incomplete gear, and the lower hanging part is provided with a matching tooth that can mesh with the incomplete teeth on the incomplete gear; the upper end of the unlocking pull rod is connected to the lever in a transmission manner, and when the unlocking pull rod moves downward, it can drive the lever to continue to rotate toward the circuit breaker housing, so that the incomplete gear and the matching tooth are out of meshing relationship. When the circuit breaker suitable for marine ship equipment of the present invention is in use, the lever of the locking assembly is always blocked by the housing of the power distribution cabinet, so that the lever cannot rotate in a direction away from the circuit breaker housing, so that the lower hanging part can be stably maintained in the locking position, thereby fixing the circuit breaker more securely.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and particularly to a circuit breaker applicable to marine ship equipment. Background Art

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electric energy and protect power supply lines, etc. When they encounter serious overload, short circuit, undervoltage and other faults, they can automatically cut off the circuit, and their functions are equivalent to the combination of fuse switches and over- and under-heat relays, etc. Moreover, generally no components need to be changed after interrupting the fault current, and they have been widely used.

[0003] Chinese patent application with the publication number CN117558589A discloses a digital circuit breaker convenient for installation, including an installation frame. Hanging plates are fixedly connected to both sides of the installation frame, and a circuit breaker assembly is installed on the hanging plates. The circuit breaker assembly includes a housing. A fixed buckle plate is fixedly connected to the back of the housing. First fixed shafts are fixedly connected to both sides of the housing. Rotating rods are rotatably connected to the first fixed shafts. One end of the rotating rod is fixedly connected to a rotating buckle plate. Second fixed shafts are fixedly connected to both sides of the housing. Rotating clamping rods are rotatably connected to the second fixed shafts. One end of the rotating clamping rod is fixedly connected to a push button. The other end of the rotating clamping rod cooperates with the other end of the rotating rod for limiting. Stop rods are fixedly connected to both sides of the housing, and the stop rods cooperate with the rotating clamping rods. When this circuit breaker is in use, the installation frame is installed and fixed in the junction box through bolts and threaded holes. Then, the push button is pressed. The push button drives the rotating clamping rod to rotate away from the rotating rod, thereby losing the limit on the rotating rod. Then, the fixed buckle plate is hooked on the hanging plate. Then, the push button is toggled again. The push block drives the rotating clamping rod to rotate and close. The rotating rod drives the rotating buckle plate to rotate and rise, thereby clamping the rotating buckle plate tightly to the hanging plate. When the housing needs to be removed, only the push button needs to be pressed down so that the rotating buckle plate loses its fixation, and the housing can be quickly removed from the installation frame.

[0004] When the above-mentioned digital circuit breaker convenient for installation is applied to marine ship equipment, the problems are as follows: When the ship is sailing on the sea, the ship is prone to shaking under the influence of sea waves, which drives the circuit breaker to shake. Over time, relative movement is likely to occur between the rotating clamping rod and the rotating rod of the circuit breaker, and further, the rotating buckle plate cannot be tightly clamped to the hanging plate, so that the circuit breaker is likely to fall off the hanging plate when shaking, and the fixation of the circuit breaker is not firm enough. Summary of the Invention

[0005] The present invention provides a circuit breaker applicable to marine ship equipment, aiming to solve the problems in the prior art that when the digital circuit breaker convenient for installation is applied to marine ship equipment, the fixation of the circuit breaker is not firm enough and the circuit breaker is likely to fall off the hanging plate when shaking.

[0006] A circuit breaker suitable for marine ship equipment of the present invention comprises a mounting frame, a circuit breaker housing and a locking mechanism, wherein the locking mechanism comprises an upper hanging member, a lower hanging member and a locking assembly, wherein the upper hanging member is fixedly connected to the circuit breaker housing, the lower hanging member is movably mounted on the circuit breaker housing, the lower hanging member has a locking position and an opening position, the locking assembly can drive the lower hanging member to switch between the locking position and the opening position, and the circuit breaker housing is further provided with a resetting elastic member for driving the lower hanging member to reset to the opening position;

[0007] The locking assembly includes a rotating part and an unlocking pull rod, the rotating part includes a lever and an incomplete gear, the lever is fixed on the incomplete gear, the incomplete gear is rotatably mounted on the circuit breaker housing, and the lower hanging part is provided with matching teeth that can mesh with the incomplete teeth on the incomplete gear. When the upper hanging part is hung on the mounting frame and the circuit breaker housing is rotated toward the distribution cabinet housing, the distribution cabinet housing can squeeze the lever to rotate toward the circuit breaker housing to drive the incomplete gear to mesh with the matching teeth, and drive the lower hanging part to move upward to the locking position; the upper end of the unlocking pull rod is transmission connected with the lever, and the lower end of the unlocking pull rod extends to the bottom of the circuit breaker housing. When the unlocking pull rod moves downward, it can drive the lever to continue to rotate toward the circuit breaker housing, so that the incomplete gear is disengaged from the meshing relationship with the matching teeth, so that the lower hanging part is reset to the open position under the drive of the reset elastic part.

[0008] The beneficial effects are as follows: When the circuit breaker applicable to marine ship equipment of the present invention is in use, first fix the mounting bracket on the outer shell of the power distribution cabinet, and then the operator first hangs the upper hanging member of the locking mechanism on the upper end of the mounting bracket, and then slowly releases the circuit breaker housing. Since the upper hanging member on the upper side of the circuit breaker housing has been hung on the mounting bracket, during the process of releasing the circuit breaker housing, the lower part of the circuit breaker housing will rotate towards the outer shell of the power distribution cabinet under the action of its own gravity. During the rotation process, the lever of the locking assembly will first contact the outer shell of the power distribution cabinet, and then the outer shell of the power distribution cabinet will squeeze the lever to rotate towards the circuit breaker housing. The rotation of the lever will drive the incomplete gear to rotate, so that the incomplete gear meshes with the mating teeth on the lower hanging member. After that, when the incomplete gear continues to rotate, it will drive the lower hanging member to move upward to the locking position. At this time, the lower hanging member is hung on the lower end of the mounting bracket, and the upper hanging member and the lower hanging member cooperate to lock and fix the circuit breaker housing on the mounting bracket. In the locked state, since the lever of the locking assembly is always blocked by the outer shell of the power distribution cabinet, the lever cannot rotate in the direction away from the circuit breaker housing, so that the lower hanging member can be stably maintained in the locking position, and thus the circuit breaker is fixed more firmly. When it is necessary to disassemble the circuit breaker housing from the outer shell of the power distribution cabinet, the operator can manually hold the lower end of the unlocking pull rod and then pull the unlocking pull rod downward. The unlocking pull rod drives the lever to continue to rotate towards the circuit breaker housing, so that the incomplete gear is disengaged from the mating teeth. At this time, since the lower hanging member is no longer blocked by the incomplete gear, it will be reset to the open position under the drive of the reset elastic member, and then the operator can conveniently and quickly remove the circuit breaker from the outer shell of the power distribution cabinet.

[0009] Preferably, a strip-shaped chute extending along the radial direction of the incomplete gear is formed on the lever, the upper end of the unlocking pull rod is provided with a second rotating shaft, the unlocking pull rod is installed in the strip-shaped chute through the second rotating shaft, the second rotating shaft can slide along the strip-shaped chute, and the second rotating shaft can rotate around its axis in the strip-shaped chute. When the second rotating shaft is located at the end of the strip-shaped chute close to the incomplete gear, the second rotating shaft and the incomplete gear are in a coaxial state; the lower end of the unlocking pull rod is connected with an elastic connection assembly, and the elastic connection assembly can keep the second rotating shaft in the position coaxial with the incomplete gear when not subjected to external force.

[0010] The beneficial effects are as follows: The setting of the elastic connection assembly can keep the second rotating shaft in the position coaxial with the incomplete gear, so as to prevent the incomplete gear from rotating and squeezing the second rotating shaft to move through the strip-shaped chute when the second rotating shaft is in a non-coaxial position with the incomplete gear.

[0011] Preferably, the unlocking pull rod is an elastic telescopic rod that can elastically elongate when subjected to a tensile force. The unlocking pull rod includes a first rod, a second rod, and a telescopic spring. The first rod is located above the second rod. The first rod and the second rod are elastically connected by the telescopic spring, and the first rod and the second rod are slidably connected along their length directions. The second rotating shaft is provided on the first rod.

[0012] Preferably, one end of the second rod is provided with a jack extending along its length direction. One end of the first rod is slidably inserted into the jack. The telescopic spring is arranged in the jack, and one end of the telescopic spring is fixedly connected to the first rod, and the other end of the telescopic spring is fixedly connected to the second rod.

[0013] Preferably, a limiting member is also fixedly provided on the second rod. When the toggle lever rotates to a position where the lower hanging member is in the locked position, the limiting member abuts against the toggle lever to prevent the toggle lever from continuing to rotate towards the circuit breaker housing.

[0014] The beneficial effect is that when the lower hanging member is in the locked position, the setting of the limiting member can limit the further rotation of the toggle lever towards the circuit breaker housing. At the same time, the outer shell of the power distribution cabinet always blocks the toggle lever, making it impossible for the toggle lever to rotate away from the circuit breaker housing, so that the lower hanging member can be stably maintained in the locked position, and the circuit breaker can be fixed more reliably.

[0015] Preferably, the elastic connection assembly includes a holding elastic member and a connecting member. One end of the connecting member is connected to the lower end of the unlocking pull rod. The other end of the connecting member forms an overhanging end away from the outer shell of the power distribution cabinet. The position between the two ends of the connecting member is rotatably connected to the circuit breaker housing. One end of the holding elastic member is fixed on the circuit breaker housing, and the other end of the holding elastic member is connected to the connecting member. In the natural state, the holding elastic member makes the end of the connecting member connected to the unlocking pull rod higher than the overhanging end. Pressing the overhanging end upward can drive the unlocking pull rod to move downward.

[0016] The beneficial effect is that when it is necessary to disassemble the circuit breaker housing from the outer shell of the power distribution cabinet, the operator can drive the unlocking pull rod to move downward by pressing the overhanging end of the connecting member upward, and then drive the unlocking pull rod to drive the toggle lever to rotate towards the circuit breaker housing, so that the incomplete gear disengages from the mating teeth to achieve unlocking. Since the overhanging end of the connecting member is located away from the outer shell of the power distribution cabinet, it is convenient for the operator to press.

[0017] Preferably, a rotating shaft is provided at the lower end of the unlocking pull rod. One end of the connecting member for connecting to the unlocking pull rod is provided with a strip-shaped hole extending along the length direction of the connecting member. The unlocking pull rod is installed in the strip-shaped hole through the rotating shaft. The rotating shaft can slide along the strip-shaped hole and can rotate relative to the connecting member in the strip-shaped hole.

[0018] Preferably, the holding elastic member includes a holding spring, a spring guide post, and a pressing block. The spring guide post is arranged vertically. The upper end of the spring guide post is fixedly connected to the bottom of the circuit breaker housing. A sleeving hole is formed in the pressing block, and the pressing block is sleeved on the spring guide post in a vertically sliding manner. The holding spring is sleeved on the spring guide post and is located between the pressing block and the circuit breaker housing. The upper end of the holding spring is fixedly connected to the bottom of the circuit breaker housing, and the lower end of the holding spring is fixedly connected to the pressing block. A fitting hole extending along the length direction of the connecting member is formed in the connecting member, and the lower end of the spring guide post is inserted into the fitting hole. The bottom of the pressing block is used for abutting against the upper surface of the connecting member.

[0019] Preferably, an arc surface is provided at the bottom of the pressing block, and the arc surface is used for abutting against the upper surface of the connecting member.

[0020] The beneficial effect is that: by the arc surface of the pressing block abutting against the upper surface of the connecting member, the sliding friction force between the pressing block and the connecting member can be reduced, so that the frictional resistance received by the operator when pressing the overhanging end of the connecting member upward is smaller and more labor-saving.

[0021] Preferably, the mounting bracket includes a fixing plate, an upper hook plate, and a lower hook plate. The upper hook plate and the lower hook plate are fixed on the fixing plate and are respectively located on the upper and lower sides of the fixing plate. The upper hook plate is used for forming an upper hanging slot with the power distribution cabinet housing, and the upper hanging slot is located above the upper hook plate. The lower hook plate is used for forming a lower hanging slot with the power distribution cabinet housing, and the lower hanging slot is located below the lower hook plate.

[0022] The beneficial effect of the present invention is that: when the circuit breaker applicable to marine ship equipment of the present invention is in the locked state, the lever of the locking assembly is always blocked by the power distribution cabinet housing and cannot rotate in the direction away from the circuit breaker housing, so that the lower hanging member can be stably held in the locking position, thereby improving the fixing strength of the circuit breaker. Moreover, the operator manually holds the lower end of the unlocking pull rod and then pulls the unlocking pull rod downward to conveniently and quickly disassemble the circuit breaker housing from the power distribution cabinet housing. In addition, by providing the limiting member, when the lower hanging member is in the locking position, the limiting member can limit the lever from rotating towards the circuit breaker housing. At the same time, the power distribution cabinet housing always blocks the lever, so that the lever cannot rotate in the direction away from the circuit breaker housing, thereby enabling the lower hanging member to be stably held in the locking position and more reliably fixing the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram when the circuit breaker applicable to marine ship equipment of the present invention is installed.

[0024] Figure 2 is the front view when the circuit breaker applicable to marine ship equipment of the present invention is installed.

[0025] Figure 3It is a schematic structural diagram of a mounting bracket for a circuit breaker applicable to marine ship equipment of the present invention.

[0026] Figure 4 It is a cross-sectional view during the installation of the circuit breaker applicable to marine ship equipment of the present invention.

[0027] Figure 5 It is a schematic structural diagram of a rotating member and a lower hanging member of the circuit breaker applicable to marine ship equipment of the present invention.

[0028] Figure 6 It is a schematic assembly structural diagram of a circuit breaker housing and a locking mechanism of the circuit breaker applicable to marine ship equipment of the present invention.

[0029] Figure 7 It is an exploded view of a circuit breaker housing and a locking mechanism of the circuit breaker applicable to marine ship equipment of the present invention.

[0030] Figure 8 It is a cross-sectional view of a rotating member and an unlocking pull rod of the circuit breaker applicable to marine ship equipment of the present invention.

[0031] Figure 9 It is an exploded view of a rotating member and an unlocking pull rod of the circuit breaker applicable to marine ship equipment of the present invention.

[0032] Figure 10 It is Figure 4 an enlarged view of the structure at position A in

[0033] Reference numerals:

[0034] 1. Mounting bracket; 11. Fixed plate; 111. Bolt connection hole; 12. Upper hook plate; 13. Lower hook plate; 2. Circuit breaker housing; 21. First installation groove; 22. Second installation groove; 23. Reset elastic member; 24. Installation plate; 25. Support rotating shaft; 31. Upper hanging member; 32. Lower hanging member; 321. Hanging portion; 322. Rack portion; 323. Matching tooth; 331. Rotating member; 3311. Poking rod; 3312. Incomplete gear; 3313. First rotating shaft; 3314. Strip-shaped sliding groove; 332. Unlocking pull rod; 3321. First rod; 3322. Second rod; 3323. Telescopic spring; 3324. Rotating shaft; 3331. Holding elastic member; 33311. Holding spring; 33312. Spring guide post; 33313. Pressing block; 3332. Connecting member; 3333. Strip-shaped hole; 3334. Matching hole; 334. Second rotating shaft; 335. Limiting member; 4. Power distribution cabinet housing. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below, and the examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0036] As shown Figures 1 to 10 in the figure, the circuit breaker applicable to marine ship equipment of the present invention includes a mounting bracket 1 for fixedly mounting on the outer shell 4 of the power distribution cabinet, a circuit breaker housing 2, and a locking mechanism. The locking mechanism is mounted on the circuit breaker housing 2 and is used to lock and fix the circuit breaker housing 2 on the mounting bracket 1.

[0037] As shown Figures 1 to 3 in the figure, the mounting bracket 1 includes a fixing plate 11, an upper hook plate 12, and a lower hook plate 13. The upper hook plate 12 and the lower hook plate 13 are fixed on the fixing plate 11 and are respectively located on the upper and lower sides of the fixing plate 11. A plurality of bolt connection holes 111 extending along the length direction of the fixing plate 11 are formed in the fixing plate 11, and the bolt connection holes 111 are evenly spaced along the length direction of the fixing plate 11. When fixing the mounting bracket 1 on the outer shell 4 of the power distribution cabinet, first fit the fixing plate 11 with the outer shell 4 of the power distribution cabinet, so that an upper hanging slot is formed between the upper hook plate 12 and the outer shell 4 of the power distribution cabinet. The upper hanging slot is located above the upper hook plate 12, and a lower hanging slot is formed between the lower hook plate 13 and the outer shell 4 of the power distribution cabinet. The lower hanging slot is located below the lower hook plate 13. Then use bolts to pass through the bolt connection holes 111 to fixedly mount the mounting bracket 1 on the outer shell 4 of the power distribution cabinet.

[0038] As shown Figures 4 to 7 in the figure, the locking mechanism includes an upper hanging member 31, a lower hanging member 32, and a locking assembly. The upper hanging member 31 is fixedly mounted on the circuit breaker housing 2. An upper hook slot is formed between the upper hanging member 31 and the circuit breaker housing 2. The upper hook slot is located below the upper hanging member 31, and the upper hanging member 31 can be hung in the upper hanging slot. The lower hanging member 32 is movably mounted up and down on the circuit breaker housing 2, and the lower hanging member 32 is located directly below the upper hanging member 31. Specifically, the lower hanging member 32 includes a hanging portion 321 and a rack portion 322. The upper end of the rack portion 322 is fixedly connected to the bottom of the hanging portion 321, and a plurality of mating teeth 323 are arranged along the length direction of the rack portion 322. A first installation slot 21 and a second installation slot 22 are formed in the circuit breaker housing 2. The first installation slot 21 is located below the upper hanging member 31, the second installation slot 22 is located below the first installation slot 21, and the second installation slot 22 communicates with the first installation slot 21. The hanging portion 321 of the lower hanging member 32 is slidably mounted up and down in the first installation slot 21, and the rack portion 322 of the lower hanging member 32 is slidably mounted up and down in the second installation slot 22.

[0039] As shown Figure 4 in the figure, the lower hanging member 32 has a locking position and an open position. When the lower hanging member 32 is in the locking position, the lower hanging member 32 can be hung in the lower hanging slot, so as to lock and fix the circuit breaker housing 2 on the mounting bracket 1. When the lower hanging member 32 is in the open position, the lower hanging member 32 is disengaged from the lower hanging slot to achieve unlocking. As shown Figure 6 and Figure 7As shown, the locking assembly is installed on the circuit breaker housing 2. The locking assembly is in driving connection with the lower hanging member 32. The locking assembly can drive the lower hanging member 32 to move up and down to realize the switching between the locking position and the opening position, so as to realize the locking and fixing or unlocking of the circuit breaker housing 2 and the mounting rack 1. A reset elastic member 23 for driving the lower hanging member 32 to reset to the opening position is further provided on the groove wall of the first mounting groove 21 close to the second mounting groove 22. Specifically, the reset elastic member 23 is a spring. The spring is arranged vertically. The upper end of the spring is fixedly connected to the bottom of the hanging portion 321, and the lower end of the spring is fixedly connected to the groove wall of the first mounting groove 21 close to the second mounting groove 22.

[0040] As Figures 6 to 9 shown, the locking assembly includes a rotating member 331, an unlocking pull rod 332 and an elastic connection assembly. The rotating member 331 is arranged in the second mounting groove 22. The rotating member 331 includes a dial rod 3311 and an incomplete gear 3312. The dial rod 3311 is fixed on the outer peripheral surface of the incomplete gear 3312, and the length direction of the dial rod 3311 extends along the radial direction of the incomplete gear 3312. One end of the dial rod 3311 away from the incomplete gear 3312 extends out of the second mounting groove 22, and one end of the dial rod 3311 away from the incomplete gear 3312 is lower than the end of the dial rod 3311 close to the incomplete gear 3312. The incomplete gear 3312 is rotatably installed on the opposite side groove walls of the second mounting groove 22. Specifically, a first rotating shaft 3313 is coaxially and fixedly arranged on the incomplete gear 3312. The incomplete gear 3312 is rotatably installed on the opposite side groove walls of the second mounting groove 22 through the first rotating shaft 3313. The incomplete teeth on the incomplete gear 3312 can be engaged with the mating teeth 323 on the lower hanging member 32. When the incomplete gear 3312 is engaged with the mating teeth 323 on the lower hanging member 32, rotating the dial rod 3311 can drive the incomplete gear 3312 to rotate synchronously, and further drive the lower hanging member 32 to move up and down.

[0041] As Figure 9 and Figure 10As shown in the figure, a strip-shaped chute 3314 extending along the radial direction of the incomplete gear 3312 is provided on the shift lever 3311. The unlocking pull rod 332 is arranged in the second installation groove 22. A second rotating shaft 334 is fixedly arranged at the upper end of the unlocking pull rod 332. The unlocking pull rod 332 is installed in the strip-shaped chute 3314 through the second rotating shaft 334. The second rotating shaft 334 can slide along the strip-shaped chute 3314, and the second rotating shaft 334 can rotate around its axis in the strip-shaped chute 3314. When the second rotating shaft 334 is located at one end of the strip-shaped chute 3314 close to the incomplete gear 3312, the second rotating shaft 334 is coaxial with the incomplete gear 3312. The lower end of the unlocking pull rod 332 is used for connecting with an elastic connection component. When the elastic connection component is not subjected to an external force, it can keep the second rotating shaft 334 in a position coaxial with the incomplete gear 3312. When an external force acts to make the unlocking pull rod 332 move downward, and further make the second rotating shaft 334 slide along the strip-shaped chute 3314, the unlocking pull rod 332 can drive the incomplete gear 3312 to rotate towards the circuit breaker housing 2, so that the incomplete gear 3312 is disengaged from the mating tooth 323, and the lower hanging part 32 is reset to the open position under the drive of the reset elastic member 23.

[0042] As Figures 8 to 10 shown, the unlocking pull rod 332 is an elastic telescopic rod that can elastically elongate when subjected to a tensile force. The unlocking pull rod 332 includes a first rod 3321, a second rod 3322, and a telescopic spring 3323. The first rod 3321 is located above the second rod 3322. The first rod 3321 and the second rod 3322 are elastically connected by the telescopic spring 3323. The first rod 3321 and the second rod 3322 are slidably connected along their length directions. The second rotating shaft 334 is arranged on the first rod 3321. Specifically, a jack extending along the length direction is provided at one end of the second rod 3322. One end of the first rod 3321 is slidably inserted into the jack. The telescopic spring 3323 is arranged in the jack, and the telescopic spring 3323 is sleeved on the first rod 3321. One end of the telescopic spring 3323 is fixedly connected to the first rod 3321, and the other end of the telescopic spring 3323 is fixedly connected to the second rod 3322. A limiting member 335 is also fixedly arranged on the outer wall of the second rod 3322. When the shift lever 3311 rotates to a position where the lower hanging part 32 is located at the locking position, the limiting member 335 abuts against the shift lever 3311 to prevent the shift lever 3311 from continuing to rotate towards the circuit breaker housing 2.

[0043] As Figure 6 、 Figure 8 and Figure 10As shown, the elastic connection component includes a retaining elastic member 3331 and a connecting member 3332. One end of the connecting member 3332 is connected to the lower end of the unlocking pull rod 332. The other end of the connecting member 3332 forms an overhanging end away from the power distribution cabinet housing 4. The position between the two ends of the connecting member 3332 is rotatably connected to the circuit breaker housing 2. Specifically, a rotating shaft 3324 is provided at the lower end of the second rod 3322. The connecting member 3332 is a plate-like structure. A strip-shaped hole 3333 extending along the length direction of the connecting member 3332 is formed at one end of the connecting member 3332 for connecting with the second rod 3322. The second rod 3322 is installed in the strip-shaped hole 3333 through the rotating shaft 3324. The rotating shaft 3324 can slide along the strip-shaped hole 3333 and can rotate relative to the connecting member 3332 within the strip-shaped hole 3333. Two downwardly extending mounting plates 24 are fixedly provided at the bottom of the circuit breaker housing 2. The two mounting plates 24 are spaced apart. The connecting member 3332 is located between the two mounting plates 24. A support rotating shaft 25 is provided at the rotatable connection between the connecting member 3332 and the circuit breaker housing 2. The support rotating shaft 25 is parallel to the rotating shaft 3324. Both ends of the support rotating shaft 25 are rotatably mounted on the mounting plates 24 through bearings, thereby realizing the rotatable connection of the connecting member 3332 to the mounting plates 24.

[0044] As Figure 10 shown, one end of the retaining elastic member 3331 is fixed to the circuit breaker housing 2. The other end of the retaining elastic member 3331 is connected to the connecting member 3332. In the natural state, the retaining elastic member 3331 makes the end of the connecting member 3332 connected to the unlocking pull rod 332 higher than the overhanging end. When the overhanging end is pressed upward, it can drive the unlocking pull rod 332 to move downward. Since the overhanging end of the connecting member 3332 is located away from the power distribution cabinet housing 4, when it is necessary to disassemble the circuit breaker housing 2 from the power distribution cabinet housing 4, the operator can conveniently press the overhanging end of the connecting member 3332 upward. While the overhanging end moves upward, it drives the unlocking pull rod 332 to move downward, and further drives the unlocking pull rod 332 to drive the lever 3311 to rotate towards the circuit breaker housing 2, so that the incomplete gear 3312 is disengaged from the mating tooth 323 to achieve unlocking.

[0045] As Figure 6 and Figure 10As shown, specifically, the holding elastic member 3331 includes a holding spring 33311, a spring guide post 33312, and a pressing block 33313. The spring guide post 33312 is of a cylindrical structure, the spring guide post 33312 is arranged vertically, and the upper end of the spring guide post 33312 is fixedly connected to the bottom of the circuit breaker housing 2. A sleeve hole slidably matched with the spring guide post 33312 is formed in the pressing block 33313, and the pressing block 33313 is slidably sleeved on the spring guide post 33312 up and down. The holding spring 33311 is sleeved on the spring guide post 33312 and is located between the pressing block 33313 and the circuit breaker housing 2. The upper end of the holding spring 33311 is fixedly connected to the bottom of the circuit breaker housing 2, and the lower end of the holding spring 33311 is fixedly connected to the pressing block 33313. A mating hole 3334 extending along the length direction of the connecting member 3332 is formed in the connecting member 3332, and the lower end of the spring guide post 33312 is inserted into the mating hole 3334. The pressing block 33313 is of a semi-cylindrical structure, and the bottom of the pressing block 33313 is an arc surface for abutting against the upper surface of the connecting member 3332. By the arc surface of the pressing block 33313 abutting against the upper surface of the connecting member 3332, the sliding friction force between the pressing block 33313 and the connecting member 3332 during relative sliding therebetween can be reduced, so that the frictional resistance received by the operator when pressing the connecting member 3332 upward is smaller, making it more labor-saving for the operator.

[0046] The implementation principle of the circuit breaker applicable to marine ship equipment of the embodiment of the present invention is as follows: when in use, the fixing plate 11 of the mounting frame 1 is first fitted to the switch cabinet housing 4, so that an upper hanging groove is formed between the upper hook plate 12 and the switch cabinet housing 4, and then the mounting frame 1 is bolted to the switch cabinet housing 4. Then, the staff first hangs the upper hanging member 31 of the locking mechanism on the upper hanging groove, and then slowly releases the circuit breaker housing 2. Since the upper hanging piece 31 on the upper side of the circuit breaker housing 2 has been hung in the upper hanging groove, the circuit breaker housing 2 can rotate toward the distribution cabinet housing 4 under the action of its own gravity during the process of releasing the circuit breaker housing 2. During the rotation, the lever 3311 of the locking assembly can first contact with the distribution cabinet housing 4, and then when continuing to rotate, the distribution cabinet housing 4 will squeeze the lever 3311 to rotate toward the circuit breaker housing 2. At the same time, the rotation of the lever 3311 will drive the incomplete gear 3312 to rotate, so that the incomplete gear 3312 and the matching tooth 323 on the lower hanging piece 32 are changed from a non-meshing state to a meshing state. Then, the incomplete gear 3312 continues to rotate, which will move the matching teeth 323 on the lower hanging member 32, driving the lower hanging member 32 to move upward until the hanging portion 321 of the lower hanging member 32 is inserted into the lower hanging groove formed between the lower hook plate 13 and the switch cabinet housing 4. At the same time, the limiter 335 abuts against the lever 3311, and the lever 3311 cannot continue to rotate toward the circuit breaker housing 2 under the obstruction of the limiter 335. At this time, the upper hanging member 31 cooperates with the lower hanging member 32 to lock and fix the circuit breaker housing 2 on the mounting frame 1.

[0047] When the circuit breaker housing 2 is in a locked state, since the lever 3311 of the locking assembly is blocked by the switch cabinet housing 4 and the limiter 335, the lever 3311 can neither rotate in the direction away from the circuit breaker housing 2 nor rotate in the direction close to the circuit breaker housing 2, so that the lower hanging member 32 can be stably maintained in the locked position, thereby fixing the circuit breaker more securely. The circuit breaker applicable to marine ship equipment of the present invention can be stably and securely fixed on the switch cabinet housing 4, and even if the ship is shaken by the influence of waves, the circuit breaker can still be stably fixed on the switch cabinet housing 4 and will not fall off.

[0048] When it is necessary to remove the circuit breaker housing 2 from the power distribution cabinet housing 4, the operator presses upward on the overhanging end of the connecting member 3332, causing the retaining spring 33311 to be compressed. At the same time, the end of the connecting member 3332 connected to the unlocking rod 332 moves downward, thereby stretching the unlocking rod 332 and compressing the telescopic spring 3323. The second rod 3322 of the unlocking rod 332 first moves downward and no longer restricts the lever 3311 from rotating towards the direction close to the circuit breaker housing 2. Then, the telescopic spring 3323 drives the first rod 3321 to move downward. During the downward movement of the first rod 3321, the second rotating shaft 334 on the first rod 3321 slides downward along the strip-shaped chute 3314. During the sliding of the second rotating shaft 334, the lever 3311 is driven to rotate towards the direction close to the circuit breaker housing 2 until the incomplete gear 3312 disengages from the mating tooth 323 on the lower hanging member 32. After the incomplete gear 3312 disengages from the mating tooth 323 on the lower hanging member 32, the reset elastic member 23 drives the lower hanging member 32 to move to the open position, realizing the unlocking of the circuit breaker. Then, the operator can conveniently and quickly remove the circuit breaker from the power distribution cabinet housing 4.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A circuit breaker applicable to marine ship equipment, comprising a mounting bracket, a circuit breaker housing and a locking mechanism, characterized in that The locking mechanism includes an upper hanging piece, a lower hanging piece and a locking assembly, the upper hanging piece is fixedly connected to the circuit breaker housing, the lower hanging piece is movably installed on the circuit breaker housing, the lower hanging piece has a locking position and an unlocking position, the locking assembly can drive the lower hanging piece to switch between the locking position and the unlocking position, and the circuit breaker housing is also provided with a reset elastic piece for driving the lower hanging piece to reset to the unlocking position; the locking assembly includes a rotating piece and an unlocking pull rod, the rotating piece includes a lever and an incomplete gear, the lever is fixed on the incomplete gear, the incomplete gear is rotatably installed on the circuit breaker housing, the lower hanging piece is provided with matching teeth that can mesh with the incomplete teeth on the incomplete gear, and when the upper hanging piece is hung on the mounting frame and the circuit breaker housing is rotated toward the distribution cabinet housing, the distribution cabinet housing can squeeze the lever toward the circuit breaker The housing of the circuit breaker rotates to drive the incomplete gear to engage with the matching teeth, and drives the lower hanging part to move upward to the locked position; the upper end of the unlocking pull rod is transmission-connected with the lever, and the lower end of the unlocking pull rod extends to the bottom of the circuit breaker housing. When the unlocking pull rod moves downward, it can drive the lever to continue to rotate toward the circuit breaker housing, so that the incomplete gear is disengaged from the matching teeth, so that the lower hanging part is reset to the open position under the drive of the reset elastic part; the mounting frame includes a fixed plate, an upper hook plate and a lower hook plate, the upper hook plate and the lower hook plate are fixed on the fixed plate, and are respectively located on the upper and lower sides of the fixed plate, the upper hook plate is used to form an upper hanging groove with the housing of the distribution cabinet, and the upper hanging groove is located above the upper hook plate, and the lower hook plate is used to form a lower hanging groove with the housing of the distribution cabinet, and the lower hanging groove is located below the lower hook plate.

2. The circuit breaker applicable to marine ship equipment according to claim 1, wherein, The lever is provided with a strip slide groove extending radially along the incomplete gear, and a second rotating shaft is provided at the upper end of the unlocking pull rod. The unlocking pull rod is installed in the strip slide groove through the second rotating shaft. The second rotating shaft can slide along the strip slide groove, and the second rotating shaft can rotate around its axis in the strip slide groove. When the second rotating shaft is located at the end of the strip slide groove close to the incomplete gear, the second rotating shaft and the incomplete gear are in a coaxial state; the lower end of the unlocking pull rod is connected to an elastic connecting component, which can keep the second rotating shaft in a coaxial position with the incomplete gear when not subject to external force.

3. The circuit breaker applicable to marine vessel equipment according to claim 2, wherein, The unlocking pull rod is an elastic telescopic rod that can be elastically extended when subjected to tension. The unlocking pull rod includes a first rod, a second rod and a telescopic spring. The first rod is located above the second rod. The first rod and the second rod are elastically connected by the telescopic spring. The first rod and the second rod are slidably connected along their length direction. The second rotating shaft is arranged on the first rod.

4. The circuit breaker applicable to marine ship equipment according to claim 3, characterized in that, One end of the second rod is provided with a socket extending along its length direction, one end of the first rod is slidably inserted into the socket, a telescopic spring is arranged in the socket, one end of the telescopic spring is fixedly connected to the first rod, and the other end of the telescopic spring is fixedly connected to the second rod.

5. The circuit breaker applicable to marine ship equipment according to claim 4, characterized in that, A limiting member is also fixedly provided on the second rod. When the lever is rotated to a position where the lower hanging member is located at a locking position, the limiting member abuts against the lever to prevent the lever from further rotating toward the circuit breaker housing.

6. The circuit breaker applicable to marine ship equipment according to any one of claims 2-5, characterized in that, The elastic connection component includes a holding elastic member and a connecting member. One end of the connecting member is connected to the lower end of the unlocking pull rod. The other end of the connecting member forms an overhanging end away from the power distribution cabinet housing. The position between the two ends of the connecting member is rotatably connected to the circuit breaker housing. One end of the holding elastic member is fixed on the circuit breaker housing, and the other end of the holding elastic member is connected to the connecting member. In the natural state, the end of the connecting member connected to the unlocking pull rod is higher than the overhanging end, and pressing the overhanging end upward can drive the unlocking pull rod to move downward.

7. The circuit breaker applicable to marine ship equipment according to claim 6, characterized in that, A rotating shaft is provided at the lower end of the unlocking pull rod. A strip-shaped hole extending along the length direction of the connecting member is formed at the end of the connecting member for connecting with the unlocking pull rod. The unlocking pull rod is installed in the strip-shaped hole through the rotating shaft. The rotating shaft can slide along the strip-shaped hole and can rotate relative to the connecting member in the strip-shaped hole.

8. The circuit breaker applicable to marine ship equipment according to claim 6, wherein The holding elastic member includes a holding spring, a spring guide post, and a pressing block. The spring guide post is arranged vertically. The upper end of the spring guide post is fixedly connected to the bottom of the circuit breaker housing. A sleeve hole is formed in the pressing block, and the pressing block is slidably sleeved on the spring guide post up and down. The holding spring is sleeved on the spring guide post and is located between the pressing block and the circuit breaker housing. The upper end of the holding spring is fixedly connected to the bottom of the circuit breaker housing, and the lower end of the holding spring is fixedly connected to the pressing block. A matching hole extending along the length direction of the connecting member is formed in the connecting member. The lower end of the spring guide post is inserted into the matching hole, and the bottom of the pressing block is used for abutting against the upper surface of the connecting member.

9. The circuit breaker applicable to marine ship equipment according to claim 8, characterized in that, An arc surface is provided at the bottom of the pressing block, and the arc surface is used for abutting against the upper surface of the connecting member.

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