Side mounted circuit breaker

Abstract

The invention discloses a side-mounted circuit breaker, comprising a sealing plate, a circuit breaker body, an operating mechanism and a transmission mechanism, wherein the circuit breaker body comprises a main frame and three vacuum interrupters, the operating mechanism comprises an operating frame, a main shaft and a switch-on and switch-off drive assembly; the transmission mechanism comprises a transmission frame, a connecting rod transmission assembly, a sealing transmission assembly, a transmission rod and three sets of transmission crank arm assemblies, the transmission crank arm assemblies are installed on the transmission frame in a sequence from front to back, and the transmission crank arm assemblies are fixedly connected to the insulating pull rods at the moving end of the vacuum interrupter; under the drive of the switch-on and switch-off drive assembly, the main shaft is transmitted to the sealing transmission assembly through the connecting rod transmission assembly, and the sealing transmission assembly is simultaneously transmitted to the three sets of transmission crank arm assemblies through the transmission rod to drive the lifting and lowering of the insulating pull rods, thereby realizing the switch-on and switch-off of the circuit breaker body. The invention realizes the longitudinal arrangement of the three-phase vacuum interrupters of the circuit breaker from front to back, and has the advantages of compact structure, low cost, easy maintenance, reliable and stable operation, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a side-mounted circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect the current under normal circuit conditions and close, carry and disconnect the current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, protect power lines and motors, etc., and automatically cut off the circuit when they are seriously overloaded or short-circuited or undervoltage. Its function is equivalent to the combination of a fuse switch and an over-underheating relay. Moreover, it is generally not necessary to change parts after breaking the fault current. At present, it has been widely used.

[0003] Cubical Gas Insulated Switchgear, referred to as C-GIS, is a primary power distribution system equipment with a circuit breaker as the main switch, which is used for 10-35kV or higher voltage levels. The gas-filled ring main unit uses a load switch as the main switch, and there is also a circuit breaker solution, which is used for a 10-35kV secondary power distribution system. The gas-filled cabinet is usually a general term for C-GIS and gas-filled ring main unit. At present, the gas-filled cabinet adopts a positive-mounted circuit breaker structure, and the three-phase vacuum arc extinguishing chamber of the circuit breaker is arranged horizontally from left to right, occupying a large width in the gas-filled cabinet. However, in some special occasions, the space requirements are relatively high, and the lateral space allowed for the gas-filled cabinet is small. Therefore, it is urgent to innovate and design a circuit breaker structure that occupies a small lateral space. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a side-mounted circuit breaker, which optimizes the design of the operating mechanism of the circuit breaker and realizes the longitudinal arrangement of the three-phase vacuum interrupter of the circuit breaker from front to back. It has the advantages of compact structure, low cost, easy maintenance, reliable and stable operation, etc.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A side-mounted circuit breaker comprises a sealing plate, a circuit breaker body mounted on the back of the sealing plate, an operating mechanism mounted on the front of the sealing plate, and a transmission mechanism connected between the circuit breaker body and the operating mechanism, wherein the circuit breaker body comprises a main frame and three vacuum interrupter chambers arranged in the main frame in a sequence from front to back, the operating mechanism comprises an operating frame, a main shaft arranged transversely and rotatably mounted on the operating frame, and a switch-on and switch-off drive assembly mounted in the operating frame, wherein a main crank arm is mounted in the middle of the main shaft; the transmission mechanism comprises a transmission frame, a connecting rod transmission assembly, a sealing transmission assembly, a transmission rod, and three sets of transmission crank arm assemblies, wherein the sealing transmission assembly is mounted on The transmission frame is installed on the back side of the sealing plate in the through hole on the sealing plate and is located on the top of the main frame. The transmission crank arm assembly is installed on the transmission frame in a sequence from front to back and corresponds to the three vacuum arc extinguishing chambers one by one. The transmission crank arm assembly is fixedly connected to the insulating pull rod at the moving end of the corresponding vacuum arc extinguishing chamber. Under the drive of the opening and closing drive assembly, the main crank arm and the main shaft rotate and are transmitted to the sealing transmission assembly through the connecting rod transmission assembly. The sealing transmission assembly is simultaneously transmitted to the three groups of transmission crank arm assemblies through the transmission rod. The transmission crank arm assembly drives the lifting and lowering of the insulating pull rod to realize the opening and closing of the circuit breaker body.

[0007] As a further improvement of the present invention, the sealed transmission assembly includes a connecting rod, a bellows movable guide, a sealing bellows and a connecting screw. The inner end of the connecting rod is fixedly connected to the outer end of the transmission rod, and the outer end of the connecting rod is fixed to the inner end of the bellows movable guide; the bellows movable guide is movably sleeved in the sealing bellows, and the inner end of the bellows movable guide is sealed and fixedly connected to the inner end of the sealing bellows. The outer end of the sealing bellows is fixed to the sealing plate through a sealing flange, the inner end of the connecting screw is fixed to the outer end of the bellows movable guide, and the outer end of the connecting screw is connected to the connecting rod transmission assembly.

[0008] As a further improvement of the present invention, the connecting rod transmission assembly includes a main connecting rod and a triangular crank arm, the first corner of the triangular crank arm is rotatably mounted on the operating frame through a connecting rod pin, the second corner of the triangular crank arm is fixedly connected to the connecting screw, the third corner of the triangular crank arm is rotatably connected to one end of the main connecting rod, and the other end of the main connecting rod is rotatably connected to the main crank arm, the horizontal height of the main shaft is lower than the horizontal height of the connecting rod pin, and the horizontal height of the connecting rod pin is lower than the connecting screw.

[0009] As a further improvement of the present invention, the transmission crook arm assembly includes a transmission pin shaft, two transmission crook arms and a transmission pin, the transmission pin shaft is installed on the transmission frame, the two transmission crook arms are arranged in parallel, the middle part of the transmission crook arm is rotatably installed on the transmission pin shaft, the transmission rod is arranged below the transmission pin shaft, the first leg of the transmission crook arm is rotatably connected to the transmission rod, the second leg of the transmission crook arm is rotatably connected to both ends of the transmission pin, and the transmission pin is fixedly connected to the insulating pull rod by a screw.

[0010] As a further improvement of the present invention, the opening and closing drive assembly includes a closing drive assembly, an opening drive assembly, an energy storage shaft, a latch shaft, a crank arm shaft and an opening and closing holding latch, the closing drive assembly includes a closing coil, a closing crank arm, a closing connecting plate, a first holding latch, a closing cam and a closing energy storage mechanism; the opening drive assembly includes an opening coil, an opening crank arm, an opening connecting plate, a second holding latch and an opening energy storage mechanism, the energy storage shaft is rotatably installed between the left and right plates of the operating frame, the latch shaft and the crank arm shaft are fixedly installed between the left and right plates of the operating frame, and the latch shaft is located at The closing and opening holding latch is rotatably mounted on the energy storage shaft between the energy storage shaft and the crank arm shaft, the first holding latch and the second holding latch are both rotatably mounted on the latch shaft, and the closing crank arm and the opening crank arm are both rotatably mounted on the crank arm shaft; the first holding latch has a first connecting arm and a first latch at a set angle, the second holding latch has a second connecting arm and a second latch at a set angle, a closing roller is mounted on the closing cam, the closing and opening holding latch has a third connecting arm and a fourth connecting arm at a set angle, the opening roller is mounted on the third connecting arm, and the fourth connecting arm A third latch is installed on the connecting arm; a main roller and a closing holding roller are installed on the main crank arm; one end of the closing connecting plate is rotatably connected to the closing crank arm, and the other end of the closing connecting plate is rotatably connected to the first connecting arm; one end of the opening connecting plate is rotatably connected to the opening crank arm, and the other end of the opening connecting plate is rotatably connected to the second connecting arm; the closing coil and the opening coil are installed on the operating frame through a connecting piece, and in the open and energy-storing state, the first latch of the first holding latch is placed on one side of the closing roller, and the third latch of the opening and closing holding latch is disengaged from the closing holding roller, closing When the circuit breaker is closed, the closing coil pushes the closing crank arm to rotate through the closing coil push rod after receiving the closing signal, and drives the first holding latch to rotate through the closing connecting plate, so that the first latch of the first holding latch is disengaged from the closing roller. At the same time, the closing energy storage mechanism drives the energy storage shaft to rotate and drives the closing cam to rotate, so that the closing cam hits the main roller to rotate and drives the main crank arm and the main shaft to rotate. The main crank arm and the main shaft drive the circuit breaker body to close through the transmission mechanism. At the same time, the closing holding roller rotates and abuts against the third latch to maintain the closed state;

[0011] In the closed state, the second catch of the second holding catch abuts against one side of the opening roller, and the third catch of the opening and closing holding catch abuts against one side of the closing holding roller; when opening, the opening coil pushes the opening crank arm to rotate through the opening coil push rod after receiving the opening signal, and drives the second holding catch to rotate through the opening connecting plate, so that the second catch of the second holding catch is disengaged from the opening roller. At the same time, the opening energy storage mechanism drives the main shaft and the main crank arm to rotate and drives the closing holding roller to rotate, so that the closing holding roller is disengaged from the third catch. At the same time, the main crank arm and the main shaft drive the transmission mechanism to open the circuit breaker body.

[0012] As a further improvement of the present invention, the closing energy storage mechanism includes a fixed shaft, a compression spring, a first baffle, a second baffle, a first hanging plate and two second hanging plates, the fixed shaft is fixedly installed on the outer side of the right side plate of the operating frame, and the fixed shaft is spaced a set distance from the energy storage shaft, the first hanging plate has a first connecting end and a first T-shaped end, and the second hanging plate has a second connecting end and a second T-shaped end; the first connecting end of the first hanging plate is rotatably installed on the energy storage crank arm of the energy storage shaft, and the second connecting ends of the two second hanging plates are both rotatably installed on the fixed shaft, or, the two second hanging plates The second connecting ends of the plates are rotatably mounted on the energy storage shaft, and the first connecting end of the first hanging plate is rotatably mounted on the fixed shaft; the two second hanging plates are spaced a set distance apart to form a clamp, and the first T-shaped end of the first hanging plate passes through the second T-shaped ends of the two second hanging plates into the clamp; the first baffle plate, the second baffle plate and the compression spring are all slidably mounted on the first hanging plate and the two second hanging plates, and the compression spring is arranged between the first baffle plate and the second baffle plate, so that the first baffle plate abuts against the first T-shaped end, and the second baffle plate abuts against the second T-shaped end.

[0013] As a further improvement of the present invention, a gasket is provided between one end of the compression spring and the bottom of the first groove and / or a gasket is provided between the other end of the compression spring and the bottom of the second groove.

[0014] As a further improvement of the present invention, the operating mechanism also includes an energy storage indication component, which includes an indicator sign, an indicator pull rod, an indicator crank arm and a micro switch. The indicator crank arm and the indicator sign are both rotatably mounted on the outer surface of the right side plate of the operating frame, and the indicator crank arm is arranged on the upper side of the energy storage crank arm close to the energy storage shaft, the indicator pull rod is connected between the indicator sign and the indicator crank arm, and the micro switch is arranged on the side of the indicator crank arm facing away from the energy storage crank arm.

[0015] As a further improvement of the present invention, the opening brake energy storage mechanism includes an opening brake pin shaft, two opening brake fixing rods and two opening brake springs, the middle part of the opening brake pin shaft is inserted into the through hole in the middle part of the transmission rod, the two opening brake fixing rods are installed at intervals on the transmission frame near the sealing transmission assembly, the two opening brake springs are arranged on the left and right sides of the transmission rod, one end of one opening brake spring is fixedly connected to one end of the opening brake pin shaft, the other end of one opening brake spring is fixedly connected to one opening brake fixing rod, one end of the other opening brake spring is fixedly connected to the other end of the opening brake pin shaft, and the other end of the other opening brake spring is fixedly connected to the other opening brake fixing rod.

[0016] As a further improvement of the present invention, the operating mechanism also includes a buffer assembly, which includes an oil cup crank arm, an oil cup roller and an oil buffer. The oil cup crank arm is installed on the main shaft, and the oil cup roller is installed on the oil cup crank arm, and the oil cup roller and the oil cup crank arm are located on the outside of the left side plate of the operating frame; the oil buffer is installed on the left side plate of the operating frame, and the buffer rod of the oil buffer is arranged opposite to the oil cup roller up and down.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a side-mounted circuit breaker, which is mainly composed of a sealing plate, a circuit breaker body installed on the back of the sealing plate, an operating mechanism installed on the front of the sealing plate, and a transmission mechanism connected between the circuit breaker body and the operating mechanism. By arranging the three vacuum arc chambers in a sequence from front to back in the main frame, and innovatively designing the transmission mechanism, three groups of transmission crank arm assemblies correspond to the three vacuum arc chambers one by one, and the three groups of transmission crank arm assemblies are driven by the transmission rod at the same time, so as to realize the function of driving the three vacuum arc chambers to open and close at the same time. The sealing transmission assembly is used to realize the transmission between the connecting rod transmission assembly and the transmission rod, and is used to realize the dynamic sealing at the sealing plate. The three vacuum arc chambers are arranged in a sequence from front to back, and only one sealing transmission assembly is needed. Compared with the existing forward-mounted circuit breaker structure, the setting of the sealing transmission structure is greatly reduced, thereby reducing the potential points of gas leakage. The transmission rod and three sets of transmission crank arm assemblies are arranged on the back of the sealing plate, and can be arranged in the C-GIS sealing box together with the circuit breaker body, so as to reduce the number of parts on the front (outside) of the sealing plate, facilitate the installation of the opening and closing drive assembly and the main shaft, and make the structure of the operating mechanism more compact, so as to achieve the purpose of occupying less lateral space. Therefore, the present invention realizes the longitudinal arrangement of the three-phase vacuum interrupter of the circuit breaker from front to back, and has the advantages of compact structure, low cost, easy maintenance, reliable and stable operation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a side-mounted circuit breaker of the present invention from a left side perspective;

[0019] Figure 2 A right-side perspective view of a side-mounted circuit breaker of the present invention;

[0020] Figure 3 A top perspective view of a side-mounted circuit breaker of the present invention;

[0021] Figure 4 It is a front view of the side-mounted circuit breaker of the present invention;

[0022] Figure 5 for Figure 4 Middle AA section view Figure 1 ;

[0023] Figure 6 for Figure 4 Middle AA section view Figure 2 ;

[0024] Figure 7 It is a three-dimensional diagram of the closing energy storage mechanism in the present invention;

[0025] Figure 8 It is a cross-sectional view of the closing energy storage mechanism in the present invention;

[0026] Fig. 9 for Figure 8 The enlarged structural diagram at B in the middle;

[0027] Combined with the accompanying drawings, the following description is given:

[0028] 1-sealing plate, 2-circuit breaker body, 210-main frame, 220-vacuum interrupter, 221-insulating pull rod, 3-operating mechanism, 310-operating frame, 320-main shaft, 330-opening and closing drive assembly, 331-closing drive assembly, 3311-closing coil, 3312-closing crank arm, 3313-closing connecting plate, 3314-first holding latch, 33141-first connecting arm, 33142-first latch, 3315-closing cam, 3316-closing energy storage mechanism, 33161-fixed shaft, 33162-compression spring, 33163-first baffle, 33164-second baffle, 33165-first hanging plate, 33166-second hanging plate, 33167-clamp, 33168-gasket, 3317-closing roller, 332-opening drive assembly, 3321-opening coil, 3322-opening arm, 3323-opening connecting plate, 3324-second retaining latch, 33241-second connecting arm, 33242-second latch, 3325-opening energy storage mechanism, 33251-opening pin, 33252-opening fixing rod, 33253-opening spring, 3 33-energy storage shaft, 334-pawl shaft, 335-crank arm shaft, 336-first holding pawl, 3361-third connecting arm, 3362-fourth connecting arm, 3363-opening roller, 3364-third pawl, 340-main crank arm, 341-main roller, 342-closing holding roller, 350-energy storage indication assembly, 351-indicator plate, 352-indicator pull rod, 353-indicator crank arm, 354-micro switch, 360-buffer assembly, 361-oil cup crank arm, 362-oil cup roller, 363-oil buffer, 4-transmission mechanism, 41 0-transmission frame, 420-connecting rod transmission assembly, 421-main connecting rod, 422-triangular crank arm, 4221-first angle, 4222-second angle, 4223-third angle, 423-connecting rod pin, 430-sealed transmission assembly, 431-connecting rod, 432-bellows dynamic guide, 433-sealed bellows, 434-connecting screw, 435-sealing flange, 440-transmission rod, 450-transmission crank arm assembly, 451-transmission pin, 452-transmission crank arm, 4521-first support leg, 4522-second support leg, 453-transmission pin. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, is a side-mounted circuit breaker according to the present invention, comprising a sealing plate 1, a circuit breaker body 2 installed on the back of the sealing plate, an operating mechanism 3 installed on the front of the sealing plate and a transmission mechanism 4 connected between the circuit breaker body and the operating mechanism, the circuit breaker body comprising a main frame 210 and three vacuum arc extinguishing chambers 220 arranged in the main frame in a sequence from front to back, the operating mechanism comprising an operating frame 310, a main shaft 320 arranged horizontally and rotatably installed on the operating frame, and a switch-on and switch-off drive assembly 330 installed in the operating frame, and a main crank arm 340 is installed in the middle of the main shaft; the transmission mechanism comprises a transmission frame 410, a connecting rod transmission assembly 420, a sealing transmission assembly 430, a transmission rod 440 and Three groups of transmission crank arm assemblies 450, the sealed transmission assembly is installed in the through hole on the sealing plate, the transmission frame is installed on the back of the sealing plate and is located on the top of the main frame, the transmission crank arm assembly is installed on the transmission frame in a sequence from front to back, and corresponds to the three vacuum arc extinguishing chambers one by one, and the transmission crank arm assembly is fixedly connected to the insulating pull rod at the moving end of the corresponding vacuum arc extinguishing chamber; under the drive of the opening and closing drive assembly, the main crank arm and the main shaft rotate and are transmitted to the sealed transmission assembly through the connecting rod transmission assembly, and the sealed transmission assembly is simultaneously transmitted to the three groups of transmission crank arm assemblies through the transmission rod, and the transmission crank arm assembly realizes the opening and closing of the circuit breaker body by driving the lifting and lowering of the insulating pull rod. In the above structure, the three vacuum arc extinguishing chambers are arranged in the main frame in a sequence from front to back, and the transmission mechanism is innovatively designed, by means of the three groups of transmission crank arm assemblies corresponding to the three vacuum arc extinguishing chambers one by one, and the transmission rod drives the three groups of transmission crank arm assemblies at the same time, so as to realize the opening and closing function of driving the three vacuum arc extinguishing chambers at the same time. The sealed transmission assembly is used to realize the transmission between the connecting rod transmission assembly and the transmission rod, and is used to realize the dynamic seal at the sealing plate. The three vacuum arc extinguishing chambers are arranged in order from front to back, and only one sealed transmission assembly is required. Compared with the existing upright circuit breaker structure, the setting of the sealed transmission structure is greatly reduced, thereby reducing the potential leakage points. The transmission rod and three sets of transmission crank arm assemblies are arranged on the back of the sealing plate, and can be arranged in the C-GIS sealing box together with the circuit breaker body, thereby reducing the number of parts on the front (outside) of the sealing plate, making the structure of the operating mechanism more compact, so as to achieve the purpose of occupying less lateral space. Therefore, the present invention realizes the longitudinal arrangement of the three-phase vacuum arc extinguishing chambers of the circuit breaker from front to back, and has the advantages of compact structure, low cost, easy maintenance, reliable and stable operation, etc.

[0031] In the above structure, the vacuum arc extinguishing chamber is mainly composed of an airtight insulating shell, a conductive circuit, a shielding system, contacts and the like, which is the prior art and will not be described in detail here.

[0032] Preferably, see Figure 5and Figure 6 The sealing transmission assembly includes a connecting rod 431, a bellows movable guide 432, a sealing bellows 433 and a connecting screw 434. The inner end of the connecting rod is fixedly connected to the outer end of the transmission rod, and the outer end of the connecting rod is fixed to the inner end of the bellows movable guide; the bellows movable guide is movably sleeved in the sealing bellows, and the inner end of the bellows movable guide is sealed and fixedly connected to the inner end of the sealing bellows. The outer end of the sealing bellows is fixed to the sealing plate through a sealing flange 435, and the inner end of the connecting screw is fixed to the outer end of the bellows movable guide, and the outer end of the connecting screw is connected to the connecting rod transmission assembly. In this way, the sealing of the through hole of the sealing plate can be achieved through the cooperation of the sealing bellows and the sealing flange, and the sealing transmission function can be achieved through the transmission between the bellows movable guide, the connecting rod and the connecting screw. The sealing flange can be composed of an inner flange and an outer flange, the outer end of the sealing bellows is sealed and connected to the inner flange, an O-ring can be arranged between the inner side of the inner flange and the sealing plate, and the outer flange is pressed and positioned outside the inner flange. In this way, by arranging the sealing bellows for connection, not only can the power be transmitted through the sealing bellows when the connecting screw moves back and forth to realize motion transmission, but also the connection method of the sealing bellows can well realize the dynamic sealing requirements during the opening and closing process of the circuit breaker, and the sealing performance is better and the structure is simpler. Compared with the existing upright circuit breaker structure, only one sealing bellows is needed, which reduces the potential leakage points.

[0033] Preferably, see Figure 3 , Figure 5 and Figure 6 The connecting rod transmission assembly includes a main connecting rod 421 and a triangular crank arm 422. The first corner 4221 of the triangular crank arm is rotatably mounted on the operating frame through a connecting rod pin 423. The second corner 4222 of the triangular crank arm is fixedly connected to the connecting screw. The third corner 4223 of the triangular crank arm is rotatably connected to one end of the main connecting rod. The other end of the main connecting rod is rotatably connected to the main crank arm. The horizontal height of the main shaft is lower than the horizontal height of the connecting rod pin, and the horizontal height of the connecting rod pin is lower than the connecting screw. In this way, the connecting screw connecting the main connecting rod and the sealing transmission assembly through the triangular crank arm can convert the vertical driving force into the horizontal driving force, and then transmit it to the horizontally arranged transmission rod.

[0034] Preferably, see Figure 5 and Figure 6The transmission crank arm assembly includes a transmission pin shaft 451, two transmission crank arms 452 and a transmission pin 453. The transmission pin shaft is installed on the transmission frame. The two transmission crank arms are arranged in parallel. The middle part of the transmission crank arm is rotatably installed on the transmission pin shaft. The transmission rod is arranged below the transmission pin shaft. The first leg 4521 of the transmission crank arm is rotatably connected to the transmission rod. The second leg 4522 of the transmission crank arm is rotatably connected to the two ends of the transmission pin. The transmission pin is fixedly connected to the insulating pull rod through a screw. In this way, through the cooperation of the two transmission crank arms, the transmission pin and the transmission pin shaft, the horizontal driving force can be converted into the driving force for vertical lifting, so that one transmission rod can simultaneously drive the lifting of three groups of transmission crank arm assemblies to achieve the opening and closing functions of the three vacuum arc extinguishing chambers arranged in front and behind.

[0035] Preferably, see Figure 5 and Figure 6 The closing and opening drive assembly includes a closing drive assembly 331, an opening drive assembly 332, an energy storage shaft 333, a latch shaft 334, a crank arm shaft 335 and a closing and opening holding latch 336. The closing drive assembly includes a closing coil 3311, a closing crank arm 3312, a closing connecting plate 3313, a first holding latch 3314, a closing cam 3315 and a closing energy storage mechanism 3316; the opening drive assembly includes an opening coil 3321, an opening crank arm 3322, an opening connecting plate 3 323, a second retaining latch 3324 and a switch-off energy storage mechanism 3325, the energy storage shaft is rotatably mounted between the left and right plates of the operating frame, the latch shaft and the crank arm shaft are fixedly mounted between the left and right plates of the operating frame, and the latch shaft is located between the energy storage shaft and the crank arm shaft, the switch-off and switch-off retaining latch is rotatably mounted on the energy storage shaft, the first retaining latch and the second retaining latch are both rotatably mounted on the latch shaft, and the switch-off crank arm The first retaining latch has a first connecting arm 33141 and a first latch 33142 at a set angle, the second retaining latch has a second connecting arm 33241 and a second latch 33242 at a set angle, a closing roller 3317 is installed on the closing cam, and the opening and closing retaining latch has a third connecting arm 3361 and a fourth connecting arm 3362 at a set angle, and a closing roller is installed on the third connecting arm 3363, a third latch 3364 is installed on the fourth connecting arm; a main roller 341 and a closing holding roller 342 are installed on the main crank arm; one end of the closing link plate is rotatably connected to the closing crank arm, and the other end of the closing link plate is rotatably connected to the first connecting arm; one end of the opening link plate is rotatably connected to the opening crank arm, and the other end of the opening link plate is rotatably connected to the second connecting arm; the closing coil and the opening coil are installed on the operating frame through a connecting piece.

[0036] In the energy-storing state of the opening switch, the first latch of the first holding latch abuts against one side of the closing roller, and the third latch of the opening and closing holding latch is disengaged from the closing holding roller. When closing the switch, the closing coil pushes the closing crank arm to rotate through the closing coil push rod after receiving the closing signal, and drives the first holding latch to rotate through the closing connecting plate, so that the first latch of the first holding latch is disengaged from the closing roller. At the same time, the closing energy storage mechanism drives the energy storage shaft to rotate and drives the closing cam to rotate, so that the closing cam hits the main roller to rotate and drives the main crank arm and the main shaft to rotate. The main crank arm and the main shaft drive the circuit breaker body to close through the transmission mechanism. At the same time, the closing holding roller rotates and abuts against the third latch to maintain the closed state;

[0037] In the closed state, the second catch of the second holding catch abuts against one side of the opening roller, so that the third catch of the opening and closing holding catch abuts against one side of the closing holding roller; when opening, the opening coil pushes the opening crank arm to rotate through the opening coil push rod after receiving the opening signal, and drives the second holding catch to rotate through the opening connecting plate, so that the second catch of the second holding catch is disengaged from the opening roller. At the same time, the opening energy storage mechanism drives the main shaft and the main crank arm to rotate and drives the closing holding roller to rotate, so that the closing holding roller is disengaged from the third catch. At the same time, the main crank arm and the main shaft drive the transmission mechanism to open the circuit breaker body.

[0038] In the above structure, the closing lever and the opening lever share a lever shaft, the first retaining latch and the second retaining latch share a latch shaft, and the closing cam and the opening and closing retaining latch share an energy storage shaft. In this way, the structure is compact, the design is reasonable, and the lateral space occupied is small, which can better meet the needs of the inflatable cabinet for a smaller lateral space.

[0039] Preferably, see Figure 7 , Figure 8 and Fig. 9, the closing energy storage mechanism includes a fixed shaft 33161, a compression spring 33162, a first baffle 33163, a second baffle 33164, a first hanging plate 33165 and two second hanging plates 33166, the fixed shaft is fixedly installed on the outer side of the right side plate of the operating frame, and the fixed shaft is spaced apart from the energy storage shaft by a set distance, the first hanging plate has a first connecting end and a first T-shaped end, and the second hanging plate has a second connecting end and a second T-shaped end; the first connecting end of the first hanging plate is rotatably installed on the energy storage crank arm of the energy storage shaft, and the second connecting ends of the two second hanging plates are both rotatably installed on the fixed shaft, or, The second connection ends of the two second hanging plates are both rotatably mounted on the energy storage shaft, and the first connection end of the first hanging plate is rotatably mounted on the fixed shaft; the two second hanging plates are spaced at a set distance to form a clamp 33167, and the first T-shaped end of the first hanging plate passes through the second T-shaped ends of the two second hanging plates; the first baffle plate, the second baffle plate and the compression spring are all slidably sleeved on the first hanging plate and the two second hanging plates, and the compression spring is arranged between the first baffle plate and the second baffle plate, so that the first baffle plate abuts against the first T-shaped end, and the second baffle plate abuts against the second T-shaped end. In this way, by designing the first hanging plate and the two second hanging plates to be sleeved with each other, and sleeve the first baffle plate, the compression spring and the second baffle plate between the first T-shaped end of the first hanging plate and the second T-shaped end of the second hanging plate, a compression energy storage structure is formed, which improves the mechanical strength of the energy storage component compared to the structure of the energy storage component using a tension spring in the prior art, and by adding a gasket between the first baffle plate and the second baffle plate, the force value of the opening and closing driving force can be accurately adjusted. Compared with the structure of the energy storage component using compression springs in the prior art, the first baffle plate and the second baffle plate in the present invention can be manufactured by machining, and only two or three specifications are fixed, so a large number of stocks can be prepared, and the first hanging plate and the second hanging plate can be formed by direct sheet metal cutting, which is convenient for production and processing. Therefore, the compression energy storage mechanism of the present invention has the advantages of simple structure, easy assembly, simple production and processing, and low production cost.

[0040] During the energy storage process, the fixed shaft and the two second hanging plates remain stationary, and the energy storage shaft rotates from the lowest point to the highest point. At this time, the energy storage shaft pulls the first hanging plate to move upward relative to the second hanging plate, so that the distance between the first T-shaped end of the first hanging plate and the second T-shaped end of the second hanging plate is reduced, thereby compressing the compression spring to achieve energy storage. When closing the switch, the energy stored in the compression spring is released, and the restoring force of the compression spring will drive the energy storage shaft to rotate from the highest point to the lowest point, thereby driving the closing cam on the energy storage shaft to rotate and hit the main roller on the main shaft to achieve closing.

[0041] Preferably, the first baffle plate is formed with a first groove on one side facing the compression spring, and the second baffle plate is formed with a second groove on one side facing the compression spring, one end of the compression spring is accommodated in the first groove, and the other end of the compression spring is accommodated in the second groove. A gasket is provided between one end of the compression spring and the bottom of the first groove, and / or a gasket 33168 is provided between the other end of the compression spring and the bottom of the second groove. In this way, by forming the first groove on the side of the first baffle plate facing the compression spring and the second groove on the side of the second baffle plate facing the compression spring, it is convenient to fix the two ends of the compression spring, and it is convenient to add a gasket between the compression spring and the first baffle plate and the second baffle plate. By setting different gaskets or changing the number of gaskets, the purpose of accurately adjusting the force value of the driving force of the compression spring can be achieved. The technical principle is: when the spacing between the fixed shaft and the energy storage shaft is constant, the more gaskets are added between the compression spring and the first baffle plate and the second baffle plate, the more compression the compression spring has, the greater the energy storage of the compression spring, and the greater the driving force provided by the compression spring after release.

[0042] Preferably, a first bearing sleeve is provided, the first bearing sleeve is rotatably connected to the shaft core of the energy storage crank arm of the energy storage shaft, and the first connecting end is sleeved and fixed on the first bearing sleeve. A second bearing sleeve is provided, the second bearing sleeve is rotatably connected to the shaft core of the fixed shaft, and the second connecting end is sleeved and fixed on the second bearing sleeve. In this way, the rotational connection between the first hanging plate and the fixed shaft or the energy storage shaft, and the rotational connection between the second hanging plate and the fixed shaft or the energy storage shaft are realized through the bearing sleeve, and the wear between them can be reduced. For example, the bearing sleeve can adopt an oil-free bearing. The structure is simple and can provide the function of mutual rotation.

[0043] Preferably, see Figure 2 The operating mechanism also includes an energy storage indication component 350, which includes an indicator board 351, an indicator pull rod 352, an indicator crank arm 353 and a micro switch 354. The indicator crank arm and the indicator board are both rotatably mounted on the outer side of the right side plate of the operating frame, and the indicator crank arm is arranged on the upper side of the energy storage crank arm close to the energy storage shaft. The indicator pull rod is connected between the indicator board and the indicator crank arm, and the micro switch is arranged on the side of the indicator crank arm facing away from the energy storage crank arm. In this way, when the closing energy storage mechanism stores energy, that is, when the energy storage shaft rotates from the lowest point to the highest point, the energy storage crank arm will push the indicator crank arm to rotate, and the indicator crank arm rotates and then drives the indicator board to rotate through the indicator pull rod, and the energy storage mark on the indicator board is displayed, so as to achieve the purpose of prompting that the energy storage has been completed. At the same time, the indicator crank arm touches the micro switch, and the micro switch will send a signal to the background controller to prompt that the energy storage has been completed.

[0044] Preferably, see Figure 5 and Figure 6The opening switch energy storage mechanism includes an opening switch pin shaft 33251, two opening switch fixing rods 33252 and two opening switch springs 33253. The middle part of the opening switch pin shaft is inserted into the through hole in the middle part of the transmission rod. The two opening switch fixing rods are installed at intervals on the transmission frame near the position of the sealing transmission assembly. The two opening switch springs are arranged on the left and right sides of the transmission rod. One end of one opening switch spring is fixedly connected to one end of the opening switch pin shaft, and the other end of one opening switch spring is fixedly connected to one opening switch fixing rod. One end of another opening switch spring is fixedly connected to the other end of the opening switch pin shaft, and the other end of another opening switch spring is fixedly connected to another opening switch fixing rod. In this way, when closing the switch, the transmission rod drives the two opening switch springs to store energy at the same time through the opening switch pin shaft, such as the opening switch spring stretching energy storage; when opening the switch, the opening switch spring energy storage is released, which can drive the transmission rod to reset, and the transmission rod then drives three sets of transmission crank arm assemblies at the same time and drives the insulating pull rod at the moving end of the vacuum arc extinguishing chamber to realize the opening of the circuit breaker body. Here, the opening fixing rod is used to assemble the opening spring to be parallel to the transmission rod, such as horizontally arranged, and the present invention is provided with two opening springs, which can balance the driving transmission rod and ensure the driving force required for driving three vacuum interrupters at the same time. However, it is not limited to this, and the number of opening springs can be increased or decreased as needed.

[0045] Preferably, see Figure 1 The operating mechanism also includes a buffer assembly 360, which includes an oil cup crank arm 361, an oil cup roller 362 and an oil buffer 363. The oil cup crank arm is mounted on the main shaft, and the oil cup roller is mounted on the oil cup crank arm, and the oil cup roller and the oil cup crank arm are located on the outside of the left side plate of the operating frame; the oil buffer is mounted on the left side plate of the operating frame, and the buffer rod of the oil buffer is arranged opposite to the oil cup roller up and down. In this way, through the cooperation of the oil buffer and the oil cup roller, the rotation of the main shaft under force can be effectively buffered, vibration can be reduced and the service life can be increased.

[0046] The side-mounted circuit breaker of the present invention can be applied to cabinet-type gas-insulated metal-enclosed switchgear (C-GIS) and used as a C-GIS high-voltage AC circuit breaker. When working, the C-GIS high-voltage AC circuit breaker works separately according to the opening and closing instructions issued by the execution logic unit. The present invention realizes the longitudinal arrangement of the three-phase vacuum arc extinguishing chamber of the circuit breaker from front to back, thereby achieving the purpose of reducing the occupied lateral space, and can meet the miniaturization development needs of the switchgear. Not only is the overall structure compact, but it also has the advantages of low cost, easy maintenance, reliable and stable operation, etc.

[0047] Many specific details are described in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A side-mounted circuit breaker, characterized in that: The invention comprises a sealing plate (1), a circuit breaker body (2) mounted on the back of the sealing plate, an operating mechanism (3) mounted on the front of the sealing plate, and a transmission mechanism (4) connected between the circuit breaker body and the operating mechanism, wherein the circuit breaker body comprises a main frame (210) and three vacuum interrupter chambers (220) arranged in the main frame in a sequence from front to back, the operating mechanism comprises an operating frame (310), a main shaft (320) arranged transversely and rotatably mounted on the operating frame, and a switch-on and switch-off drive assembly (330) mounted in the operating frame, and a main crank arm (340) is mounted in the middle of the main shaft; the transmission mechanism comprises a transmission frame (410), a connecting rod transmission assembly (420), a sealing transmission assembly (430), a transmission rod (440), and a transmission rod (440). ) and three groups of transmission crank arm assemblies (450), the sealed transmission assembly is installed in the through hole on the sealing plate, the transmission frame is installed on the back of the sealing plate and is located on the top of the main frame, the transmission crank arm assemblies are installed on the transmission frame in a sequence from front to back and correspond to the three vacuum arc extinguishing chambers one by one, and the transmission crank arm assemblies are fixedly connected to the insulating pull rods (221) at the movable ends of the corresponding vacuum arc extinguishing chambers; under the drive of the opening and closing drive assembly, the main crank arm and the main shaft rotate and are transmitted to the sealed transmission assembly through the connecting rod transmission assembly, the sealed transmission assembly is simultaneously transmitted to the three groups of transmission crank arm assemblies through the transmission rod, and the transmission crank arm assembly realizes the opening and closing of the circuit breaker body by driving the lifting and lowering of the insulating pull rods; The sealed transmission assembly comprises a connecting rod (431), a bellows movable guide (432), a sealed bellows (433) and a connecting screw (434); the inner end of the connecting rod is fixedly connected to the outer end of the transmission rod, and the outer end of the connecting rod is fixed to the inner end of the bellows movable guide; the bellows movable guide is movably sleeved in the sealed bellows, the inner end of the bellows movable guide is sealed and fixedly connected to the inner end of the sealed bellows, the outer end of the sealed bellows is fixed to the sealing plate via a sealing flange (435), the inner end of the connecting screw is fixed to the outer end of the bellows movable guide, and the outer end of the connecting screw is connected to the connecting rod transmission assembly; The switch-on and switch-off drive assembly comprises a switch-on drive assembly (331), a switch-off drive assembly (332), an energy storage shaft (333), a latch shaft (334), a crank arm shaft (335) and a switch-on and switch-off holding latch (336); the switch-on drive assembly comprises a switch-on coil (3311), a switch-off crank arm (3312), a switch-off connecting plate (3313), a first holding latch (3314), a switch-on cam (3315) and a switch-on energy storage mechanism (3316); the switch-off drive assembly comprises a switch-off coil (3321), a switch-off crank arm (3322), a switch-off connecting plate (3323), a second holding latch (3324) and a switch-off energy storage mechanism (3325); the energy storage shaft is rotatably mounted on the left and right sides of the operating frame. The plates are between the left and right plates of the operating frame, the latch shaft and the crank arm shaft are fixedly installed between the left and right plates of the operating frame, and the latch shaft is located between the energy storage shaft and the crank arm shaft, the opening and closing holding latch is rotatably installed on the energy storage shaft, the first holding latch and the second holding latch are both rotatably installed on the latch shaft, and the closing crank arm and the opening crank arm are both rotatably installed on the crank arm shaft; the first holding latch has a first connecting arm (33141) and a first latch (33142) at a set angle, the second holding latch has a second connecting arm (33241) and a second latch (33242) at a set angle, a closing roller (3317) is installed on the closing cam, and the opening and closing holding latch is rotatably installed on the energy storage shaft. The switch comprises a third connecting arm (3361) and a fourth connecting arm (3362) which are at a set angle, the third connecting arm being provided with a switch-off roller (3363), and the fourth connecting arm being provided with a third pawl (3364); the main crank arm being provided with a main roller (341) and a switch-on holding roller (342); one end of the switch-on connecting plate is rotatably connected to the switch-off crank arm, and the other end of the switch-on connecting plate is rotatably connected to the first connecting arm; one end of the switch-off connecting plate is rotatably connected to the switch-off crank arm, and the other end of the switch-off connecting plate is rotatably connected to the second connecting arm; the switch-on coil and the switch-off coil are mounted on the operating frame via a connecting piece, and in the switch-off and energy-storing state, the first pawl of the first holding pawl abuts against the first pawl of the first holding pawl. On one side of the closing roller, the third pawl of the opening and closing holding pawl is disengaged from the closing holding roller. When closing, the closing coil pushes the closing crank arm to rotate through the closing coil push rod after receiving the closing signal, and drives the first holding pawl to rotate through the closing connecting plate, so that the first pawl of the first holding pawl is disengaged from the closing roller. At the same time, the closing energy storage mechanism drives the energy storage shaft to rotate and drives the closing cam to rotate, so that the closing cam hits the main roller to rotate and drives the main crank arm and the main shaft to rotate. The main crank arm and the main shaft drive the circuit breaker body to close through the transmission mechanism. At the same time, the closing holding roller rotates and abuts against the third pawl to maintain the closed state. In the closed state, the second catch of the second holding catch abuts against one side of the opening roller, and the third catch of the opening and closing holding catch abuts against one side of the closing holding roller; when opening, the opening coil pushes the opening crank arm to rotate through the opening coil push rod after receiving the opening signal, and drives the second holding catch to rotate through the opening connecting plate, so that the second catch of the second holding catch is disengaged from the opening roller. At the same time, the opening energy storage mechanism drives the main shaft and the main crank arm to rotate and drives the closing holding roller to rotate, so that the closing holding roller is disengaged from the third catch. At the same time, the main crank arm and the main shaft drive the transmission mechanism to open the circuit breaker body.

2. The side-mounted circuit breaker according to claim 1, characterized in that: The connecting rod transmission assembly comprises a main connecting rod (421) and a triangular crank arm (422), wherein a first corner (4221) of the triangular crank arm is rotatably mounted on the operating frame via a connecting rod pin shaft (423), a second corner (4222) of the triangular crank arm is fixedly connected to the connecting screw, a third corner (4223) of the triangular crank arm is rotatably connected to one end of the main connecting rod, and the other end of the main connecting rod is rotatably connected to the main crank arm, a horizontal height of the main shaft is lower than a horizontal height of the connecting rod pin shaft, and a horizontal height of the connecting rod pin shaft is lower than the connecting screw shaft.

3. The side-mounted circuit breaker according to claim 1, characterized in that: The transmission crank arm assembly comprises a transmission pin shaft (451), two transmission crank arms (452) and a transmission pin (453), wherein the transmission pin shaft is mounted on the transmission frame, the two transmission crank arms are arranged in parallel, the middle part of the transmission crank arm is rotatably mounted on the transmission pin shaft, the transmission rod is arranged below the transmission pin shaft, the first support leg (4521) of the transmission crank arm is rotatably connected to the transmission rod, the second support leg (4522) of the transmission crank arm is rotatably connected to both ends of the transmission pin, and the transmission pin is fixedly connected to the insulating pull rod via a screw.

4. The side-mounted circuit breaker according to claim 3, characterized in that: The closing energy storage mechanism comprises a fixed shaft (33161), a compression spring (33162), a first baffle (33163), a second baffle (33164), a first hanging plate (33165) and two second hanging plates (33166), wherein the fixed shaft is fixedly mounted on the outer side of the right side plate of the operating frame, and the fixed shaft is spaced apart from the energy storage shaft by a set distance, the first hanging plate has a first connecting end and a first T-shaped end, and the second hanging plate has a second connecting end and a second T-shaped end; the first connecting end of the first hanging plate is rotatably mounted on the energy storage crank arm of the energy storage shaft, and the second connecting ends of the two second hanging plates are both rotatably mounted on the fixed shaft Alternatively, the second connecting ends of the two second hanging plates are both rotatably mounted on the energy storage shaft, and the first connecting end of the first hanging plate is rotatably mounted on the fixed shaft; the two second hanging plates are spaced a set distance apart to form a clamp (33167), and the first T-shaped end of the first hanging plate passes through the second T-shaped ends of the two second hanging plates into the clamp; the first baffle plate, the second baffle plate and the compression spring are all slidably mounted on the first hanging plate and the two second hanging plates, and the compression spring is arranged between the first baffle plate and the second baffle plate, so that the first baffle plate abuts against the first T-shaped end, and the second baffle plate abuts against the second T-shaped end.

5. The side-mounted circuit breaker according to claim 4, characterized in that: A gasket is provided between one end of the compression spring and the bottom of the first groove and / or a gasket (33168) is provided between the other end of the compression spring and the bottom of the second groove.

6. The side-mounted circuit breaker according to claim 1, characterized in that: The operating mechanism also includes an energy storage indication component (350), which includes an indication plate (351), an indication pull rod (352), an indication crank arm (353) and a micro switch (354). The indication crank arm and the indication plate are both rotatably mounted on the outer side of the right side plate of the operating frame, and the indication crank arm is arranged on the upper side of the energy storage crank arm close to the energy storage shaft. The indication pull rod is connected between the indication plate and the indication crank arm, and the micro switch is arranged on a side of the indication crank arm that is away from the energy storage crank arm.

7. The side-mounted circuit breaker according to claim 1, characterized in that: The opening brake energy storage mechanism comprises an opening brake pin shaft (33251), two opening brake fixing rods (33252) and two opening brake springs (33253), the middle part of the opening brake pin shaft is inserted into the through hole in the middle part of the transmission rod, the two opening brake fixing rods are installed at intervals on the transmission frame at positions close to the sealing transmission assembly, the two opening brake springs are arranged on the left and right sides of the transmission rod, one end of one opening brake spring is fixedly connected to one end of the opening brake pin shaft, the other end of one opening brake spring is fixedly connected to one opening brake fixing rod, one end of the other opening brake spring is fixedly connected to the other end of the opening brake pin shaft, and the other end of the other opening brake spring is fixedly connected to the other opening brake fixing rod.

8. The side-mounted circuit breaker according to claim 1, characterized in that: The operating mechanism further comprises a buffer assembly (360), the buffer assembly comprising an oil cup crank arm (361), an oil cup roller (362) and an oil buffer (363), the oil cup crank arm being mounted on the main shaft, the oil cup roller being mounted on the oil cup crank arm, and the oil cup roller and the oil cup crank arm being located on the outside of a left side plate of the operating frame; the oil buffer being mounted on the left side plate of the operating frame, and a buffer rod of the oil buffer being arranged vertically opposite to the oil cup roller.

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