A transmission structure for high current circuit breaker

Abstract

The present invention discloses a transmission structure for a large current circuit breaker, which relates to the technical field of circuit breakers. A first fixed plate and a second fixed plate are arranged in a housing, and the housing also includes a transmission assembly, an energy storage assembly and an adjustment assembly. The transmission assembly includes a transmission shaft rotating in the housing, and a plurality of evenly distributed transmission crank arms and retaining crank arms are fixedly connected to the outer wall of the transmission shaft. The energy storage assembly includes an energy storage shaft, and ratchet wheels, energy storage rings, transmission gears and transmission cams are respectively arranged on the energy storage shaft. The present invention cooperates with a clutch, an energy storage ring and an unlocking member. On the one hand, the energy storage spring can store energy through the energy storage assembly, and on the other hand, the adjustment end of the clutch can be adjusted through the unlocking member, so that when the clutch continues to rotate with the transmission gear, the working end of the clutch cannot continue to drive the energy storage ring to continue to store energy, thereby preventing mechanical damage caused by continued energy storage after the energy storage is completed. At the same time, the cooperation of the transmission cam, the transmission crank arm and the retaining crank arm can also shorten the closing bounce time.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker transmission, and in particular to a transmission structure for a high current circuit breaker. Background Art

[0002] A high-current circuit breaker is a circuit breaker used under high voltage and high current conditions. Its contacts are sealed in a vacuum arc extinguishing chamber, and vacuum is used as an insulating and arc-extinguishing medium to cut off and connect the circuit. It is widely used in power transmission and distribution systems, industrial and mining enterprises, and other places with strict requirements for high current control and protection.

[0003] In the existing technical solution, the circuit breaker uses the transmission structure to transmit force to the main circuit that needs to be opened and closed. The transmission structure is driven by manpower or electric power to store energy, and the structure uses the retaining latch to store energy. After pressing the closing button, the latch is driven to leave the holding position to complete the closing operation. After closing, the closing latch maintains the closed state, and the opening button is pressed to complete the opening operation. During the opening and closing process, the transmission structure completes the transmission of motion to realize the opening and closing actions of the main circuit.

[0004] In the existing technical solutions, the transmission structure lacks a reverse prevention structure during the energy storage process and an anti-drop protection buckle structure after the energy storage is completed, which will lead to uneven transmission of driving force during the energy storage process and mechanical damage caused by continued energy storage after the energy storage is completed. Moreover, the transmission structure in the prior art is generally transmitted to the transmission system through an ordinary cam, and the force transmitted to the transmission system by the ordinary cam is too large, which will affect the stability of the transmission system; and the initial relative rotation angle of the initial opening and closing of the initial crank arm in the transmission system is large, which is not conducive to the effective and stable transmission of force. For circuit breakers of 2500A and above, the technical parameters of the closing bounce time can only be guaranteed to be within 3.0ms, while the newly revised State Grid standard clearly stipulates that the closing bounce time of the circuit breaker should be kept within 2.0ms. The traditional transmission structure technical solution is difficult to meet the latest State Grid standard requirements.

[0005] Therefore, a transmission structure for a high current circuit breaker is needed to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a transmission structure for a large current circuit breaker to solve the technical problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a transmission structure for a large current circuit breaker, comprising a shell, a first fixed plate and a second fixed plate are arranged in the shell, and also comprises a transmission assembly, an energy storage assembly and an adjustment assembly, the transmission assembly comprises a transmission shaft rotating in the shell, a plurality of evenly distributed transmission crank arms and retaining crank arms are fixedly connected to the outer wall of the transmission shaft, the energy storage assembly comprises an energy storage shaft rotatably connected between the first fixed plate and the second fixed plate, a ratchet, an energy storage ring, a transmission gear and a transmission cam are respectively arranged on the energy storage shaft, the energy storage ring is provided with a transmission groove, the adjustment assembly comprises a fixing member arranged on one side of the transmission gear, a clutch member matched with the transmission groove is sleeved on the outer wall of the fixing member, and an unlocking member matched with the clutch member is arranged on the first fixed plate.

[0008] Preferably, a slot is provided on the energy storage shaft, the ratchet, energy storage ring and transmission cam are respectively engaged in the slot of the energy storage shaft, the transmission gear rotates on the outer wall of the energy storage shaft, a retaining latch is also provided on the energy storage shaft, and the clutch member includes a working end and an adjusting end.

[0009] Preferably, the fixing member consists of a fixed end and a limiting end, an end of the fixed end extending out of the transmission gear is provided with an annular groove, a first elastic member is arranged in the annular groove, an end of the clutch member close to the fixed end is fixedly connected with a ring member, the annular groove is coaxially arranged with the fixing member, the ring member is concentric with the annular groove, the outer wall of the ring member is slidably connected with the inner wall of the annular groove, the circumference of the ring member is smaller than the circumference of the annular groove, one end of the first elastic member is connected to the inner wall of the annular groove, and the other end of the first elastic member is connected to one end of the ring member which is inserted into the annular groove.

[0010] Preferably, a driving groove is provided at the working end of the clutch member near the transmission gear, a sliding member is slidably connected in the driving groove, a second elastic member is arranged in the driving groove, one end of the second elastic member is connected to the bottom wall in the driving groove, the other end of the second elastic member is connected to an end of the sliding member located in the driving groove, a wedge groove is provided on the outer wall of the end of the sliding member near the second elastic member, a guide groove is provided on the side wall of the end of the clutch member near the energy storage ring, the guide groove is communicated with the driving groove, a wedge member is slidably connected in the guide groove, and a wedge surface matching the wedge groove is provided on the end of the wedge member near the sliding member.

[0011] Preferably, a roller is provided at one end of the wedge away from the sliding member. When the first elastic member is compressed to the maximum limit position, the wedge is rollingly connected to the outer wall of the energy storage ring through the roller. A placement groove is provided in the energy storage ring, and the placement groove is located at the transmission groove. A telescopic member is slidingly connected in the placement groove. A chamber is provided in the telescopic member, and a rolling body is rollingly provided in the chamber. The telescopic member is composed of a cylinder and a hemisphere.

[0012] Preferably, the sliding member is composed of a cylinder and a hemisphere, the inner wall of the driving groove is also provided with a stopper to prevent the sliding member from rotating, the outer wall of the sliding member is provided with a groove matching with the stopper, one end of the sliding member extending out of the driving groove is connected to the end of the transmission gear close to the clutch, and the outer wall of the end of the transmission gear close to the clutch is provided with a recess matching with the hemisphere of the sliding member.

[0013] Preferably, the energy storage shaft comprises an energy storage crank arm, the first fixing plate and the second fixing plate are jointly provided with a support rod, and an energy storage spring is provided between the support rod and the energy storage crank arm of the energy storage shaft.

[0014] Preferably, a pawl matched with the ratchet is provided on a side of the first fixing plate close to the ratchet.

[0015] Preferably, one end of each transmission arm away from the transmission shaft is hinged to a first transmission connecting plate, each of the first transmission connecting plates is hinged to a second transmission connecting plate, and each of the second transmission connecting plates is fixedly connected via the same connecting shaft.

[0016] Preferably, the other end of each of the second transmission link plates is hinged to the inner top of the shell, and an insulating pull rod is hinged to the outer wall of one end of the second transmission link plate close to the first transmission link plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention cooperates with the clutch, the energy storage ring and the unlocking member, so that when the energy storage spring stores energy through the energy storage shaft, the unlocking member squeezes the adjusting end of the clutch, so that when the clutch continues to rotate with the transmission gear, the working end of the clutch no longer contacts and transmits with the energy storage ring, so that the transmission gear cannot drive the energy storage ring through the clutch to drive the energy storage shaft to continue to rotate and store energy, thereby preventing excessive energy storage from causing mechanical damage to the energy storage assembly, so as not to affect the normal operation of the circuit breaker.

[0019] 2. After the energy storage is completed, the hemispherical body of the sliding member of the present invention is inserted into the recess formed by the transmission gear under the action of the second elastic member, so that the clutch member is maintained at a set angle and does not contact the energy storage ring. At the same time, the wedge-shaped member is extended while the clutch member is maintained at a set angle, and one end of the clutch member rolls on the outer wall of the energy storage ring through the roller to prevent the clutch member from being separated from the transmission groove. Under the action of the first elastic member, the working end of the clutch member is always in contact with the outer wall of the energy storage ring, which further prevents the working end of the clutch member from wearing out quickly, causing the unlocking member to cause the clutch member to be separated from the transmission groove in advance, resulting in the energy storage shaft not rotating into place, and the energy storage spring not storing energy into place, thereby improving the stability of the circuit breaker operation.

[0020] 3. The present invention can maintain the transmission crank arm through the arrangement of the transmission crank arm, the retaining crank arm, the cam and related components, and the movement of the retaining crank arm directly acts on the transmission of the entire system, so that the retaining crank arm drives the entire system at a smaller relative rotation angle during the opening and closing movement, thereby improving the transmission efficiency of the entire transmission system, and the circuit breaker can also perform normal opening and closing operations when the closing spring force of the mechanism is small, thereby shortening the closing bounce time of the circuit breaker to meet the 2.0ms standard requirement of the State Grid standard, and improving the smoothness and reliability of the circuit breaker movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the installation position of the transmission shaft of the present invention.

[0023] Figure 3 This is a schematic diagram of the installation position of the unlocking member of the present invention.

[0024] Figure 4 It is a schematic diagram of the connecting shaft structure of the present invention.

[0025] Figure 5 It is a schematic diagram of the installation position of the transmission gear of the present invention.

[0026] Figure 6 This is an exploded view of the energy storage shaft of the present invention.

[0027] Figure 7 It is an exploded view of the transmission gear of the present invention.

[0028] Figure 8 It is a schematic cross-sectional view of the clutch member of the present invention at the telescopic member.

[0029] Fig. 9 It is a schematic cross-sectional view of the energy storage ring of the present invention at the placement groove.

[0030] Fig.10 It is a schematic diagram of the clutch structure of the present invention.

[0031] Fig.11 It is a schematic diagram of the structure of the fixing member of the present invention.

[0032] Fig.12 It is a schematic cross-sectional view of the clutch member of the present invention at the guide groove.

[0033] The accompanying drawings are marked as follows:

[0034] 1. Shell;

[0035] Transmission assembly; 21, transmission shaft; 22, transmission crank arm; 23, retaining crank arm; 24, first transmission connecting plate; 25, second transmission connecting plate; 26, connecting shaft;

[0036] Energy storage assembly; 31, energy storage shaft; 312, support rod; 313, energy storage spring; 32, energy storage ring; 321, transmission groove; 322, placement groove; 323, telescopic member; 324, chamber; 325, rolling body; 33, transmission gear; 331, concave hole; 34, transmission cam; 35, ratchet; 36, pawl; 37, retaining latch;

[0037] Adjustment assembly; 41, fixing member; 411, fixing end; 412, limiting end; 413, ring groove; 414, first elastic member; 42, clutch member; 4201, working end; 4202, adjustment end; 421, ring member; 422, driving groove; 423, sliding member; 424, second elastic member; 425, wedge groove; 426, guide groove; 427, wedge member; 43, unlocking member. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] See also Figures 1 to 6 A transmission structure for a high-current circuit breaker according to an embodiment of the present invention comprises a housing 1, a first fixed plate and a second fixed plate are arranged in the housing 1, and also comprises a transmission assembly 2, an energy storage assembly 3 and an adjustment assembly 4; wherein the transmission assembly 2 comprises a transmission shaft 21 rotating in the housing 1, and a plurality of evenly distributed transmission crank arms 22 and retaining crank arms 23 are fixedly connected to the outer wall of the transmission shaft 21, and the energy storage assembly 3 comprises an energy storage shaft 31 rotatably connected between the first fixed plate and the second fixed plate, and a ratchet 35, an energy storage ring 32, a transmission gear 33, and a transmission cam 34 are respectively arranged on the energy storage shaft 31.

[0041] Among them, the curve of the transmission cam 34 is improved and optimized, so that the transmission cam 34 has a higher output torque and acts on the transmission crank arm 22. Through the cooperation of the transmission crank arm 22 and the holding crank arm 23, the entire system can be driven at a smaller relative rotation angle during the opening and closing movement, thereby improving the transmission efficiency of the entire transmission structure, and the circuit breaker can also perform normal opening and closing operations when the closing spring force of the mechanism is small, thereby shortening the closing bounce time of the circuit breaker to meet the 2.0ms standard requirement under the State Grid standard.

[0042] The energy storage ring 32 is provided with a transmission groove 321; the adjustment component 4 includes a fixing member 41 arranged on one side of the transmission gear 33, the outer wall of the fixing member 41 is sleeved with a clutch member 42 adapted to the transmission groove 321, and the first fixing plate is provided with an unlocking member 43 adapted to the clutch member 42; the energy storage shaft 31 includes an energy storage crank arm, the first fixing plate and the second fixing plate are jointly provided with a support rod 312, and an energy storage spring 313 is provided between the support rod 312 and the energy storage crank arm of the energy storage shaft 31; the first fixing plate A pawl 36 matched with the ratchet 35 is provided on the side of the fixed plate close to the ratchet 35, and the end of each transmission arm 22 away from the transmission shaft 21 is hinged with a first transmission connecting plate 24, and each first transmission connecting plate 24 is hinged with a second transmission connecting plate 25, and each second transmission connecting plate 25 is fixedly connected through the same connecting shaft 26. The other end of each second transmission connecting plate 25 is hinged to the top of the shell 1, and an insulating pull rod is hinged on the outer wall of one end of the second transmission connecting plate 25 close to the first transmission connecting plate 24.

[0043] See also Figure 5 and Figure 6 The energy storage shaft 31 is provided with a slot, the ratchet 35, the energy storage ring 32 and the transmission cam 34 are respectively connected to the slot of the energy storage shaft 31, the transmission gear 33 rotates on the outer wall of the energy storage shaft 31, and the energy storage shaft 31 is also provided with a retaining latch 37; Fig.10 The clutch member 42 includes a working end 4201 and an adjusting end 4202; Fig.10 and Fig.11 The fixing member 41 is composed of a fixing end 411 and a limiting end 412. An annular groove 413 is provided at one end of the fixing end 411 extending out of the transmission gear 33. A first elastic member 414 is arranged in the annular groove 413, wherein the first elastic member 414 is a spring. An end of the clutch member 42 close to the fixing end 411 is fixedly connected with a ring member 421. The annular groove 413 is coaxially arranged with the fixing member 41. The ring member 421 is concentric with the annular groove 413. The outer wall of the ring member 421 is slidably connected with the inner wall of the annular groove 413. The circumference of the ring member 421 is smaller than the circumference of the annular groove 413. One end of the first elastic member 414 is connected with the inner wall of the annular groove 413, and the other end of the first elastic member 414 is connected with one end of the ring member 421 which is inserted into the annular groove 413. Figure 7 and Fig.12 A driving groove 422 is provided at one end of the working end 4201 of the clutch 42 close to the transmission gear 33, a sliding member 423 is slidably connected in the driving groove 422, a second elastic member 424 is provided in the driving groove 422, wherein the second elastic member 424 is a spring, one end of the second elastic member 424 is connected to the inner bottom wall of the driving groove 422, the other end of the second elastic member 424 is connected to one end of the sliding member 423 located in the driving groove 422, and a wedge-shaped groove 425 is provided on the outer wall of one end of the sliding member 423 close to the second elastic member 424; Figure 8 , Fig.10 and Fig.12 A guide groove 426 is provided on the side wall of one end of the clutch 42 close to the energy storage ring 32, and the guide groove 426 is connected to the driving groove 422. A wedge 427 is slidably connected in the guide groove 426. A wedge surface matching the wedge groove 425 is provided at one end of the wedge 427 close to the sliding member 423, and a roller is provided at one end of the wedge 427 away from the sliding member 423. When the first elastic member 414 is compressed to the maximum limit position, the wedge 427 is rollingly connected to the outer wall of the energy storage ring 32 through the roller; Figure 8 and Fig. 9 A placement groove 322 is provided in the energy storage ring 32, and the placement groove 322 is located at the transmission groove 321. A telescopic member 323 is slidably connected in the placement groove 322. A chamber 324 is opened in the telescopic member 323, and a rolling body 325 is rollingly arranged in the chamber 324, wherein the rolling body 325 is a steel ball, and the telescopic member 323 is composed of a cylinder and a hemisphere.

[0044] See also Figure 7 and Fig.12 The sliding member 423 is composed of a cylinder and a hemisphere. The inner wall of the driving groove 422 is also provided with a stopper to prevent the sliding member 423 from rotating. The outer wall of the sliding member 423 is provided with a groove that matches the stopper. One end of the sliding member 423 extending out of the driving groove 422 is connected to the end of the transmission gear 33 close to the clutch 42. The outer wall of the end of the transmission gear 33 close to the clutch 42 is provided with a recess 331 that matches the hemisphere of the sliding member 423.

[0045] When in use, when storing energy manually or electrically, the transmission gear 33 rotates clockwise. While the transmission gear 33 rotates, the clutch 42 follows the transmission gear 33 to move synchronously through the fixing member 41. Due to the setting of the first elastic member 414, the first elastic member 414 continuously squeezes the ring member 421 in the annular groove 413, so that the clutch 42 squeezes and contacts the outer wall of the energy storage ring 32 around the axis of the fixing member 41. As the transmission gear 33 rotates continuously, when the clutch 42 When the working end 4201 of the energy storage ring 32 contacts and squeezes the transmission groove 321 provided in the energy storage ring 32, the energy storage ring 32 cooperates with the transmission groove 321 through the working end 4201 of the clutch 42, so that the energy storage ring 32 rotates synchronously with the transmission gear 33. The energy storage ring 32 rotates while driving the energy storage shaft 31 to rotate. The energy storage shaft 31 drives the ratchet 35, the transmission cam 34 and the retaining latch 37 to rotate. The energy storage shaft 31 rotates while continuously stretching the energy storage spring 313 through the energy storage crank arm. When the working end 4201 of the clutch 42 cooperates with the transmission groove 321 of the energy storage ring 32 for transmission, as the transmission gear 33 continues to rotate clockwise, when the clutch 42 follows the transmission gear 33 to rotate to the unlocking member 43 position, as the clutch 42 continues to move, the adjusting end 4202 of the clutch 42 comes into contact with the unlocking member 43, and the unlocking member 43 squeezes the adjusting end 4202 of the clutch 42, so that the clutch 42 rotates clockwise around the axis of the fixing member 41, and the clutch 42 rotates clockwise around the axis of the fixing member 41. When the fixing member 42 rotates clockwise around the axis of the fixing member 41, the first elastic member 414 located in the annular groove 413 is further squeezed by the annular member 421 provided on the clutch member 42. As the transmission gear 33 continues to rotate, the unlocking member 43 further squeezes the adjusting end 4202 of the clutch member 42, so that the working end 4201 of the clutch member 42 slides on the inner wall of the transmission groove 321 until the working end 4201 of the clutch member 42 is disengaged from the transmission groove 321. At this time, the energy storage spring 313 stores energy in place. At the same time, when the energy storage handle is used to further rotate the transmission gear 33, the unlocking member 43 is used to squeeze the adjusting end 4202 of the clutch 42, so that when the clutch 42 continues to rotate with the transmission gear 33, the working end 4201 of the clutch 42 cannot be matched with the transmission groove 321 of the energy storage ring 32, so that the transmission gear 33 cannot drive the energy storage ring 32 through the clutch 42 to drive the energy storage shaft 31 to continue to rotate, preventing the energy storage shaft 31 from rotating so that the energy storage crank arm drives the energy storage spring 313 to store energy in place and continue to store energy to avoid mechanical damage. At the same time, the pawl 36 is engaged with the ratchet 35 to prevent the energy storage shaft 31 from reversing, ensuring that the energy storage shaft 31 can only perform unidirectional rotation.

[0046] When the closing operation is performed, the closing button is pressed, the closing coil is energized, the limit on the energy storage shaft 31 is released, and the energy storage shaft 31 rotates rapidly clockwise under the action of the energy storage spring 313. The energy storage shaft 31 further rotates clockwise while the transmission cam 34 further rotates. The transmission cam 34 quickly squeezes the holding crank arm 23, so that the crank arm 23 rotates while driving the transmission shaft 21 to rotate counterclockwise. At the same time, the crank arm 23 rotates counterclockwise while the first transmission connecting plate 24 is deflected. The first transmission connecting plate 24 deflects while the second transmission connecting plate 25 rotates counterclockwise around the hinge axis at the hinged connection with the top of the shell 1. The second transmission connecting plate 25 rotates counterclockwise. Since the multiple second transmission connecting plates 25 are fixedly connected by the connecting shaft 26, when the closing operation is performed, the connecting shaft 26 can ensure that the second transmission connecting plate 25 drives the insulating pull rod to close the circuit, thereby ensuring the sameness and stability of the three-phase transmission.

[0047] To summarize, through the cooperation between the clutch 42, the energy storage ring 32 and the unlocking member 43, when the energy storage spring 313 stores energy through the energy storage shaft 31, the unlocking member 43 squeezes the adjusting end 4202 of the clutch 42, so that when the clutch 42 continues to rotate following the transmission gear 33, the working end 4201 of the clutch 42 cannot be matched with the transmission groove 321 of the energy storage ring 32, so that the transmission gear 33 cannot drive the energy storage ring 32 through the clutch 42 to drive the energy storage shaft 31 to continue to rotate, thereby preventing the energy storage shaft 31 from rotating so that the energy storage crank arm drives the energy storage spring 313 to continue to store energy after storing energy in place, thereby causing mechanical damage to the energy storage assembly 3 and affecting the normal operation of the circuit breaker.

[0048] Embodiment 2

[0049] It is found during use based on the above-mentioned embodiment that when energy storage is completed, although the clutch 42 can be disengaged from the transmission groove 321 through the unlocking member 43, after the clutch 42 is disengaged from the transmission groove 321, under the action of the first elastic member 414, the working end 4201 of the clutch 42 is always in contact with the outer wall of the energy storage ring 32, so that when the motor fails or there is excessive manual energy storage, long-term operation will cause the working end 4201 of the clutch 42 to wear faster, so that the clutch 42 is disengaged from the transmission groove 321 in advance through the unlocking member 43, resulting in the energy storage shaft 31 not rotating into place, and the energy storage spring 313 not storing energy in place. For this reason, further improvements are made on the basis of the above-mentioned embodiment.

[0050] When used on the basis of the above embodiment, when the clutch 42 follows the transmission gear 33 to rotate to the unlocking member 43 position, as the clutch 42 continues to move, the adjusting end 4202 of the clutch 42 contacts the unlocking member 43, and the unlocking member 43 squeezes the adjusting end 4202 of the clutch 42, so that the clutch 42 rotates clockwise around the axis of the fixing member 41. While the clutch 42 rotates clockwise around the axis of the fixing member 41, the first elastic member 414 located in the annular groove 413 is further squeezed by the ring member 421 provided by the clutch 42. As the first elastic member 414 is compressed, the sliding member 423 is always in contact with the side wall of the transmission gear 33 under the action of the second elastic member 424, and as the clutch 42 continues to rotate and The first elastic member 414 is gradually further compressed by the ring member 421. At the same time, the sliding member 423 gradually approaches the recess 331 as the clutch member 42 rotates. As the transmission gear 33 continues to rotate, the unlocking member 43 continues to squeeze the adjusting end 4202 of the clutch member 42, so that the working end 4201 of the clutch member 42 slides on the inner wall of the transmission groove 321 until the working end 4201 of the clutch member 42 is disengaged from the transmission groove 321. After the working end 4201 of the clutch member 42 is disengaged from the transmission groove 321, the unlocking member 43 further squeezes and disengages the adjusting end 4202 of the clutch member 42 as the transmission gear 33 rotates further. When the clutch member 42 is disengaged from the unlocking member 43 as the transmission gear 33 rotates, the sliding member Under the action of the second elastic member 424, the sliding member 423 slides in the driving groove 422, so that the hemisphere of the sliding member 423 enters the recess 331 opened by the transmission gear 33. At the same time, the first elastic member 414 is compressed to the maximum limit position, and the hemisphere of the sliding member 423 is inserted into the recess 331 opened by the transmission gear 33 under the action of the second elastic member 424, so that the clutch member 42 is completely separated from the energy storage ring 32 and the unlocking member 43. The hemisphere of the sliding member 423 cooperates with the recess 331, so that the clutch member 42 is maintained at the set angle. When the second elastic member 424 further squeezes the sliding member 423 into the recess 331, the sliding member 423 moves downward, and the wedge groove opened by the sliding member 423 is 425 squeezes the wedge surface of the wedge 427 located in the guide groove 426, and the wedge 427 slides in the guide groove 426 and extends the clutch 42. When the second elastic member 424 is relaxed to the maximum limit position, the wedge 427 extends one end of the clutch 42 and rolls on the outer wall of the energy storage ring 32 through the roller to prevent the clutch 42 from being separated from the transmission groove 321. Under the action of the first elastic member 414, the working end 4201 of the clutch 42 is always in contact with the outer wall of the energy storage ring 32, so that the working end 4201 of the clutch 42 wears faster, causing the unlocking member 43 to cause the clutch 42 to be separated from the transmission groove 321 in advance, resulting in the energy storage shaft 31 not rotating in place, and the energy storage spring 313 not storing energy in place.

[0051] When the closing operation is performed, the closing button is pressed, the closing coil is energized, the limit on the energy storage shaft 31 is released, and the energy storage shaft 31 rotates rapidly clockwise under the action of the energy storage spring 313. At the same time, the energy storage ring 32 also rotates rapidly clockwise under the action of the energy storage shaft 31. When the energy storage ring 32 rotates, the telescopic member 323 slides and extends in the placement groove 322 under the action of the centrifugal force of the rapid rotation of the energy storage ring 32. Similarly, the rolling body 325 located in the chamber 324 opened by the telescopic member 323 rolls in the chamber 324 under the action of the centrifugal force and hits the end of the telescopic member 323, so that the telescopic member 323 is further extended under the action of the centrifugal force to knock and block the wedge 427, so that the wedge 427 is in the guide groove 426. It moves quickly and squeezes the wedge-shaped groove 425 opened by the sliding member 423 through the wedge-shaped surface, so that the sliding member 423 moves up and squeezes the second elastic member 424. At the same time, due to the upward movement of the sliding member 423, the cylindrical body of the sliding member 423 is separated from the recess 331. At the same time, under the relaxation effect of the first elastic member 414, the sliding member 423 is completely separated from the recess 331 and contacts the end face of the transmission gear 33. At this time, it is in the energy storage state before entering the closing state. With the slower rotation of the transmission gear 33, the wedge-shaped member 427 is again connected with the outer surface of the energy storage ring 32 through the roller, which further prevents the problem of energy storage failure caused by wear on the surface of the energy storage ring 32 and wear on the clutch 42, thereby ensuring the synchronization and effectiveness of opening and closing, and improving the closing speed.

[0052] To sum up, after the energy storage is completed, the hemisphere of the sliding member 423 is inserted into the recess 331 opened by the transmission gear 33 under the action of the second elastic member 424, so that the clutch 42 is maintained at the set angle and remains in a non-contact state with the energy storage ring 32. At the same time, the wedge-shaped member 427 extends out of the clutch 42 at one end and rolls on the outer wall of the energy storage ring 32 through the roller while the clutch 42 is maintained at the set angle, so as to prevent the clutch 42 from being separated from the transmission groove 321. After that, under the action of the first elastic member 414, the working end 4201 of the clutch 42 is always in contact with the outer wall of the energy storage ring 32, so as to further prevent the working end 4201 of the clutch 42 from wearing out quickly, causing the unlocking member 43 to cause the clutch 42 to be separated from the transmission groove 321 in advance, resulting in the energy storage shaft 31 not rotating into place, so that the energy storage spring 313 does not store energy into place.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transmission structure for a high current circuit breaker, comprising a housing, wherein a first fixing plate and a second fixing plate are arranged in the housing, characterized in that: Also includes: A transmission assembly, the transmission assembly comprising a transmission shaft rotating in a housing, the outer wall of the transmission shaft being fixedly connected with a plurality of evenly distributed transmission crank arms and retaining crank arms; An energy storage assembly, the energy storage assembly comprising an energy storage shaft rotatably connected between the first fixed plate and the second fixed plate, the energy storage shaft being respectively provided with a ratchet, an energy storage ring, a transmission gear, and a transmission cam, the energy storage ring being provided with a transmission groove, and the transmission cam pressing the holding crank arm so that the holding crank arm rotates while driving the transmission shaft to rotate; An adjustment component, the adjustment component includes a fixing member arranged on one side of the transmission gear, the outer wall of the fixing member is sleeved with a clutch member adapted to the transmission groove, and the first fixing plate is provided with an unlocking member adapted to the clutch member; The fixing member is composed of a fixing end and a limiting end, an annular groove is provided at one end of the fixing end extending out of the transmission gear, a first elastic member is arranged in the annular groove, an end of the clutch member close to the fixing end is fixedly connected with an annular member, the annular groove is coaxially arranged with the fixing member, the annular member is concentric with the annular groove, an outer wall of the annular member is slidably connected with an inner wall of the annular groove, a circumference of the annular member is smaller than a circumference of the annular groove, one end of the first elastic member is connected with the inner wall of the annular groove, and the other end of the first elastic member is connected with one end of the ring member inserted into the annular groove; A driving groove is provided at one end of the working end of the clutch member close to the transmission gear, a sliding member is slidably connected in the driving groove, a second elastic member is arranged in the driving groove, one end of the second elastic member is connected to the bottom wall in the driving groove, the other end of the second elastic member is connected to one end of the sliding member located in the driving groove, a wedge-shaped groove is provided on the outer wall of one end of the sliding member close to the second elastic member, a guide groove is provided on the side wall of one end of the clutch member close to the energy storage ring, the guide groove is communicated with the driving groove, a wedge-shaped member is slidably connected in the guide groove, and a wedge-shaped surface matching the wedge-shaped groove is provided on one end of the wedge member close to the sliding member.

2. The transmission structure for a high current circuit breaker according to claim 1, characterized in that: A slot is provided on the energy storage shaft, and the ratchet, energy storage ring and transmission cam are respectively connected to the slot of the energy storage shaft. The transmission gear rotates on the outer wall of the energy storage shaft. A retaining latch is also provided on the energy storage shaft, and the clutch member includes a working end and an adjusting end.

3. The transmission structure for a high current circuit breaker according to claim 2, characterized in that: A roller is provided at one end of the wedge away from the sliding member. When the first elastic member is compressed to the maximum limit position, the wedge is rollingly connected to the outer wall of the energy storage ring through the roller. A placement groove is provided in the energy storage ring. The placement groove is located at the transmission groove. A telescopic member is slidingly connected in the placement groove. A chamber is opened in the telescopic member. A rolling body is rollingly arranged in the chamber. The telescopic member is composed of a cylinder and a hemisphere.

4. The transmission structure for a high current circuit breaker according to claim 3, characterized in that: The sliding member is composed of a cylinder and a hemisphere. The inner wall of the driving groove is also provided with a stopper to prevent the sliding member from rotating. The outer wall of the sliding member is provided with a groove that matches the stopper. One end of the sliding member extending out of the driving groove is connected to the end of the transmission gear close to the clutch. The outer wall of the end of the transmission gear close to the clutch is provided with a recess that matches the hemisphere of the sliding member.

5. The transmission structure for a high current circuit breaker according to claim 4, characterized in that: The energy storage shaft comprises an energy storage crank arm, the first fixing plate and the second fixing plate are jointly provided with a support rod, and an energy storage spring is provided between the support rod and the energy storage crank arm of the energy storage shaft.

6. The transmission structure for a high current circuit breaker according to claim 5, characterized in that: A ratchet pawl matched with the ratchet is arranged on one side of the first fixing plate close to the ratchet.

7. The transmission structure for a high current circuit breaker according to claim 6, characterized in that: One end of each transmission arm away from the transmission shaft is hinged to a first transmission connecting plate, each of the first transmission connecting plates is hinged to a second transmission connecting plate, and each of the second transmission connecting plates is fixedly connected via the same connecting shaft.

8. The transmission structure for a high current circuit breaker according to claim 7, characterized in that: The other end of each of the second transmission connecting plates is hinged to the top of the shell, and an insulating pull rod is hinged to the outer wall of one end of the second transmission connecting plate close to the first transmission connecting plate.

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