Vacuum circuit breaker operating device

Abstract

A vacuum circuit breaker operating device disclosed by the present invention comprises a switching-on structure, a switching-off structure, a switching-on and switching-off output main shaft and an energy storage mechanism which are arranged on a rack, and the switching-off structure comprises a switching-off spring connected with the switching-on and switching-off output main shaft, and a switching-off pinch plate and a switching-off half shaft which are rotatably arranged on the rack. A transmission connecting rod assembly is movably connected between the closing and opening output main shaft and the opening buckle plate, the energy storage mechanism is provided with a driving part which drives the transmission connecting rod assembly to move in an energy release state, and the transmission connecting rod assembly pushes the closing and opening output main shaft to rotate to a closing position. Through the transmission connecting rod assembly, motion and force can be transmitted between the energy storage mechanism and the on-off output main shaft, motion and force can also be transmitted between the on-off output main shaft and the opening buckle plate, the structure is simplified, a transmission chain is shortened, matched transmission is reliable, installation parts are reduced, the structure is more compact, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply and distribution, and particularly relates to an operating device for a vacuum circuit breaker. Background Art

[0002] Due to the characteristics of strong arc extinguishing ability, long electrical life, convenient on-site maintenance, and high technical content, the vacuum circuit breaker is used as a protection and control unit for power grid equipment and power equipment in industrial and mining enterprises, and is suitable for frequent operations under rated working current or for multiple interruptions of short-circuit current. The vacuum circuit breaker can be used as a fixed installation unit or can be equipped with a special propulsion mechanism to form a trolley unit for use.

[0003] The existing vacuum circuit breakers mainly include a circuit breaker body and an operating mechanism. There are various types of vacuum circuit breakers on the market, mainly differing in the operating mechanism. Commonly, the spring-type operating mechanism is used more frequently. This spring-type operating mechanism includes a casing, an energy storage mechanism, and a tripping structure. The energy storage mechanism adopts a longitudinal vertical four-link component transmission method. By hinging the energy storage cranks at both ends of the energy storage mechanism with the energy storage spring, and using a crank or a pull rod to rotate or reciprocate multiple times, the energy storage operation is carried out. The tripping mechanism is connected to the opening and closing output shaft through a set of independent transmission structures, with a large number of connecting rod parts. After the energy storage is completed, the tripping operation is realized by pressing the tripping half shaft. The connection structures between the energy storage mechanism and the tripping mechanism and the opening and closing output shaft in the existing operating mechanism are complex, and the transmission path is long, resulting in a relatively large volume of the mechanism, a large number of parts, a complex layout, an increase in manufacturing costs, time-consuming and laborious operation, and affecting the working efficiency and reliability of the opening and closing operations of the circuit breaker. Summary of the Invention

[0004] Therefore, the purpose of the present invention is to overcome the deficiencies existing in the prior art, and thus provide an operating device for a vacuum circuit breaker with a simple and compact structure, reduced installation parts, labor-saving and convenient operation, reduced manufacturing costs, and improved working efficiency and reliability of the opening and closing operations of the circuit breaker.

[0005] To achieve the above-mentioned purpose, the present invention provides a vacuum circuit breaker operating device, comprising a closing structure, an opening structure and a closing / opening output main shaft arranged on a frame, the closing structure comprising an energy storage mechanism that can store energy manually or electrically, the opening structure comprising an opening spring connected to the closing / opening output main shaft, and an opening buckle plate and an opening half-shaft rotatably arranged on the frame, a transmission connecting rod assembly is movably connected between the closing / opening output main shaft and the opening buckle plate, the energy storage mechanism has a driving member that drives the transmission connecting rod assembly to move in an energy release state, and the driving member is separated from the transmission connecting rod assembly when the energy storage mechanism is in an energy storage state; the transmission connecting rod assembly pushes the closing / opening output main shaft to rotate to the closing position under the drive of the driving member, the opening spring is stretched and stored when the closing / opening output main shaft reaches the closing position, and applies an opening force to the connecting rod assembly through the closing / opening output main shaft to drive the opening buckle plate to rotate against the opening half-shaft.

[0006] In the above vacuum circuit breaker operating device, the driving member is a cam structure driven by an energy storage mechanism, the transmission connecting rod assembly includes a roller in contact with the cam structure, and the motion trajectory of the roller partially intersects with the motion trajectory of the cam structure.

[0007] In the above vacuum circuit breaker operating device, an arc-shaped clearance groove is provided on the contour edge of the cam structure, and the energy storage mechanism drives the clearance groove of the cam structure to face the roller in the energy storage state, and drives the cam structure to impact and contact the roller in the energy release state.

[0008] In the above-mentioned vacuum circuit breaker operating device, the transmission link assembly includes a first link, a second link and a third link connected in sequence, the first link is connected to the opening buckle plate, the third link is linked to the closing and opening output main shaft, and a roller is provided at the hinge between the first link and the second link; the transmission link assembly drives the roller to move toward the side close to the opening half-shaft when the closing and opening output main shaft is in the opening position, and drives the roller to move away from the opening half-shaft when the closing and opening output main shaft is in the closing position.

[0009] In the above-mentioned vacuum circuit breaker operating device, the closing structure includes a closing trigger structure for triggering the energy storage mechanism to transition from the energy storage state to the energy release state, and the closing trigger structure includes a closing buckle plate and a closing half-shaft rotatably arranged on the frame, and a closing roller fixed on the driving member. In the energy storage state, the energy storage mechanism drives the closing roller of the driving member to press against one end of the closing buckle plate to drive the other end of the closing buckle plate to rotate against the closing half-shaft.

[0010] In the above-mentioned vacuum circuit breaker operating device, the frame is provided with a first limit shaft and a second limit shaft respectively located on the rotation path of the opening buckle plate and the closing buckle plate, and a first torsion spring is provided between the opening buckle plate and the first limit shaft, and the first torsion spring drives the opening buckle plate to rotate toward the side away from the opening half-axis; a second torsion spring is provided between the closing buckle plate and the second limit shaft, and the second torsion spring drives the closing buckle plate to rotate toward the side away from the closing half-axis.

[0011] In the above-mentioned vacuum circuit breaker operating device, the energy storage mechanism includes a camshaft provided with a cam structure, a spring arm and an energy storage positioning wheel linked to the camshaft, and a driving gear rotatably provided on the camshaft, an energy storage spring is provided between the spring arm and the frame, a limiting boss is provided on the contour edge of the energy storage positioning wheel, and an energy storage latch that forms a limiting fit with the limiting boss is rotatably provided on the side of the driving gear, and the energy storage latch pushes the energy storage positioning wheel to drive the camshaft to rotate when following the rotation of the driving gear, and an energy storage clutch lever located on the movement path of the energy storage latch is provided on the frame, and the energy storage latch rotates when it is squeezed and contacted with the energy storage clutch lever, and is separated from the limiting boss to release the limiting fit.

[0012] In the above-mentioned vacuum circuit breaker operating device, the frame is provided with a motor and an energy storage handle for driving the driving gear to rotate, the motor shaft of the motor is provided with a motor gear meshing with the driving gear, and the handle shaft of the energy storage handle is provided with a handle gear meshing with the driving gear.

[0013] In the above-mentioned vacuum circuit breaker operating device, a tripping structure for triggering the rotation of the opening half-shaft is arranged on the frame, and the tripping structure includes an electromagnetic release, an opening coupling shaft and an opening connecting plate connected between the opening coupling shaft and the opening half-shaft. The opening coupling shaft can be rotatably arranged on the frame, and an opening tripping rod opposite to the electromagnetic release is fixed on the opening coupling shaft.

[0014] In the above-mentioned vacuum circuit breaker operating device, a closing locking structure for limiting the rotation of the closing half-shaft is provided between the closing and opening output main shaft and the closing half-shaft, and the closing locking structure includes a locking hook rotatably arranged on a frame, a locking rod fixedly connected to the closing half-shaft, and a locking cam linked to the closing and opening output main shaft. When the closing and opening output main shaft rotates to the closing position, it is pushed against the locking hook by the locking cam to drive the locking hook to limit the hook against the locking rod.

[0015] The technical solution of the present invention has the following advantages compared with the prior art:

[0016] 1. In the operating device of the vacuum circuit breaker provided by the present invention, the operating device releases the stored energy through the energy storage mechanism to complete the closing operation. During this process, the driving member drives the transmission link assembly to move under the action of the stored energy of the energy storage mechanism. According to the transmission link assembly being movably connected to the closing and opening output main shaft and the opening latch, the stored energy required for closing can be transmitted to the closing and opening output main shaft, so as to push the closing and opening output main shaft to rotate to the closing position through the transmission link assembly, thereby realizing the closing of the circuit breaker. At the same time, the opening spring is stretched and stored with energy when the closing and opening output main shaft reaches the closing position, and the opening force is transmitted to the opening latch through the transmission link assembly, and then drives the opening latch to abut against the opening half shaft. As long as the opening half shaft is rotated to make way for the opening latch to release the buckle, the opening spring can release the stored energy to drive the closing and opening output main shaft to rotate to the opening position, so as to achieve the purpose of opening the circuit breaker. The operating device of the vacuum circuit breaker designed with this structure prepares accurately in advance for opening while completing closing. The closing and opening operations are more time-saving and labor-saving. The transmission link assembly can not only transmit motion and force between the energy storage mechanism and the closing and opening output main shaft, but also transmit motion and force between the opening spring, the closing and opening output main shaft and the opening latch, simplifies the structure and shortens the transmission chain, has reliable transmission, reduces the installation parts, makes the structure of the operating device more compact, is beneficial to making the product volume smaller, is labor-saving and convenient to operate, reduces the manufacturing cost, and improves the working efficiency and reliability of the closing and opening operations of the circuit breaker.

[0017] 2. In the operating device of the vacuum circuit breaker provided by the present invention, according to the driving member being a cam structure driven by the energy storage mechanism, the transmission link assembly includes a roller intersecting with a part of the motion track of the cam structure. With this structural setting, the relief groove of the cam structure driven by the energy storage mechanism in the energy storage state is exactly opposite to the roller, thus preparing for releasing the stored energy for closing. When the energy storage mechanism releases the stored energy, it will drive the cam structure to impact and contact the roller, so as to convert the stored energy generated by the energy storage mechanism into a driving force and transmit it to the transmission link assembly through the roller. The closing and opening output main shaft is pushed to rotate through the transmission link assembly to realize the quick closing action of the closing and opening output main shaft. This cam structure and the roller achieve rolling contact, enabling the roller to cooperate with the contour curve of the cam structure to contact and transmit the motion trend, with small frictional resistance, reduced wear, good accuracy retention, capable of bearing large loads, and high transmission efficiency.

[0018] 3. In the vacuum circuit breaker operating device provided by the present invention, the transmission link assembly is composed of a first link, a second link, a third link and a roller. The roller is arranged at the hinge joint of the first link and the second link. With this structural arrangement, when the energy storage mechanism releases the stored energy for closing, the roller is impacted by the cam structure and moves away from the opening half shaft side. At the same time, the driving force applied by the cam structure is transmitted to the closing and opening output main shaft through the transmission cooperation of the multi-link, thereby driving the closing and opening output main shaft to rotate quickly to the closing position to complete the closing process. And during opening, since the opening half shaft rotates to make way for the opening catch plate and no longer restricts the opening spring in the energy storage state, the opening spring releases the stored energy to drive the closing and opening output main shaft to rotate from the closing position to the opening position. The transmission link assembly drives the roller to move towards the opening half shaft side under the drive of the closing and opening output main shaft, and transmits the opening force to the opening catch plate, so that the opening catch plate rotates to the half slot position of the opening half shaft to complete the opening process. This transmission link assembly realizes the motion conversion and torque transmission by connecting multiple links and rollers, and has the advantages of simple structure, high efficiency, stable motion, etc. It can realize the conversion of various motion forms among the energy storage mechanism, the opening structure and the closing and opening output main shaft, with reliable transmission cooperation, convenient processing and manufacturing, and is beneficial to cost reduction.

[0019] 4. In the vacuum circuit breaker operating device provided by the present invention, when the circuit breaker detects faults such as short-circuit current, it will trigger the electromagnetic release to act. The electromagnetic release will drive the opening coupling shaft to rotate. According to the transmission cooperation between the opening coupling shaft and the opening half shaft through the opening connecting plate, the opening half shaft is driven to rotate for tripping. Since the opening half shaft releases the limit on the opening catch plate after rotation, the constraint on the energy storage maintenance of the opening spring is released. At this time, the opening spring starts to release energy and drives the closing and opening output main shaft to perform the opening action. The transmission cooperation is reliable, so that the circuit breaker can be tripped and opened in case of faults, playing a role of quickly breaking and protecting the circuit breaker and the line, with sensitive action response, and ensuring the safety and reliability of the circuit breaker during use.

[0020] 5. In the vacuum circuit breaker operating device provided by the present invention, a closing locking structure is provided between the closing and opening output main shaft and the closing half shaft. The function of this closing locking structure is to prevent the operating device from performing secondary reclosing operations. The specific process is as follows: when the closing and opening output main shaft completes closing, it will drive the locking cam to push against the locking hook, thereby driving the locking hook to rotate a certain angle, so that the hook end of the locking hook just abuts against the locking rod of the closing half shaft, realizing the limit cooperation between the locking hook and the locking rod, thus achieving the purpose of restricting the rotation of the closing half shaft, avoiding the risk of secondary closing caused by misoperation, ensuring that the operating device operates in a standard manner according to the correct sequence, and improving the safety and stability of the circuit breaker and the power system. Description of the Drawings

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art.

[0022] Figure 1 Schematic perspective view of the operating device of the vacuum circuit breaker provided by the present invention;

[0023] Figure 2 Schematic structural view of another side of the operating device of the vacuum circuit breaker of the present invention;

[0024] Figure 3 Schematic structural view of the operating device of the vacuum circuit breaker of the present invention during opening;

[0025] Figure 4 Schematic structural view of the operating device of the vacuum circuit breaker of the present invention during energy storage;

[0026] Figure 5 Schematic structural view of the operating device of the vacuum circuit breaker of the present invention during closing;

[0027] Figure 6 Schematic structural view of the energy storage mechanism of the present invention in the energy storage state;

[0028] Figure 7 Schematic perspective view of the energy storage mechanism of the present invention;

[0029] Figure 8 Schematic structural view of the closing locking structure of the present invention.

[0030] Explanation of reference numerals: 1, frame; 11, motor; 12, motor gear; 13, energy storage handle; 14, handle gear; 2, closing and opening output main shaft; 3, energy storage mechanism; 31, driving member; 32, camshaft; 33, hanging spring crank arm; 34, energy storage spring; 35, driving gear; 36, energy storage positioning wheel; 37, energy storage detent; 38, energy storage clutch stop lever; 4, opening catch plate; 41, opening half shaft; 42, first limit shaft; 43, first torsion spring; 5, transmission link assembly; 51, roller; 52, first link; 53, second link; 54, third link; 6, closing catch plate; 61, closing half shaft; 62, second limit shaft; 7, closing roller; 8, tripping structure; 81, electromagnetic release; 82, opening coupling shaft; 83, opening link plate; 84, opening release lever; 9, closing locking structure; 91, locking hook; 92, locking lever; 93, locking cam. Specific embodiments

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] Embodiment

[0036] The following is a specific description of this embodiment in conjunction with the accompanying drawings:

[0037] This embodiment provides as Figure 1-8A vacuum circuit breaker operating device shown in the figure includes a closing structure, a tripping structure, and a closing and tripping output main shaft 2 arranged on a frame 1. The closing structure includes an energy storage mechanism 3 that can be manually or electrically energized. The energy storage mechanism 3 has an energy storage state and an energy release state. The tripping structure includes a tripping spring (not shown in the figure) connected to the closing and tripping output main shaft 2, and a tripping catch plate 4 and a tripping half shaft 41 rotatably arranged on the frame 1. The tripping half shaft 41 forms a limit fit with the tripping catch plate 4 to restrict the tripping spring, and when the tripping half shaft 41 is rotated, it will make way for the tripping catch plate 4, that is, release the limit fit between the two. A transmission link assembly 5 is movably connected between the closing and tripping output main shaft 2 and the tripping catch plate 4. The energy storage mechanism 3 has a driving member 31 that drives the transmission link assembly 5 to move in the energy release state. The driving member 31 is separated from the transmission link assembly 5 when the energy storage mechanism 3 is in the energy storage state. Therefore, the transmission link assembly 5 drives the closing and tripping output main shaft 2 to rotate to the closing position under the drive of the driving member 31. The tripping spring is stretched and stored with energy when the closing and tripping output main shaft 2 reaches the closing position, and applies a tripping force to drive the link assembly to drive the tripping catch plate 4 to rotate and abut against the tripping half shaft 41 through the closing and tripping output main shaft 2.

[0038] In the above embodiment, the operating device completes the closing operation by releasing the energy stored in the energy storage mechanism 3. During this process, the driving member 31 drives the transmission link assembly 5 to move under the action of the energy storage force of the energy storage mechanism, and transmits the energy storage force required for closing to the closing and tripping output main shaft 2, so as to drive the closing and tripping output main shaft 2 to rotate to the closing position through the transmission link assembly 5 to realize the closing of the circuit breaker. At the same time, the tripping spring is stretched and stored with energy when the closing and tripping output main shaft 2 reaches the closing position, and transmits the tripping force to the tripping catch plate 4 through the transmission link assembly 5, and then drives the tripping catch plate 4 to abut against the tripping half shaft 41. As long as the tripping half shaft 41 is rotated to make way for the tripping catch plate 4 to release the buckle, the tripping spring can release the stored energy to drive the closing and tripping output main shaft 2 to rotate to the tripping position, so as to achieve the purpose of tripping the circuit breaker. The vacuum circuit breaker operating device designed with this structure prepares accurately in advance for tripping while completing closing. The closing and tripping operations are more time-saving and labor-saving. The transmission link assembly can transmit motion and force between the energy storage mechanism and the closing and tripping output main shaft, and can also transmit motion and force between the tripping spring, the closing and tripping output main shaft and the tripping catch plate, simplifies the structure and shortens the transmission chain, has reliable transmission, reduces the installation parts, makes the structure of the operating device more compact, is conducive to making the product volume smaller, is labor-saving and convenient to operate, reduces the manufacturing cost, and improves the working efficiency and reliability of the circuit breaker closing and tripping operations.

[0039] The following combines Figure 1-5 to make a detailed description of the specific setting method of the transmission link assembly:

[0040] The driving member 31 is a cam structure driven by the energy storage mechanism 3, and the transmission connecting rod assembly 5 includes a roller 51 that cooperates with the cam structure. The motion trajectory of the roller 51 partially intersects with the motion trajectory of the cam structure. Specifically, an arc-shaped clearance groove is provided on the contour edge of the cam structure. The energy storage mechanism 3 drives the clearance groove of the cam structure to face the roller 51 in the energy storage state, and drives the cam structure to impact and contact the roller 51 in the energy release state. This structural setting, refer to Figure 6 The energy storage mechanism 3 in the energy storage state drives the cam structure's yield groove to be exactly opposite to the roller 51, so as to prepare for releasing the stored energy and closing the switch. When the energy storage mechanism 3 releases the stored energy, it will drive the cam structure to impact and contact the roller 51, thereby converting the stored energy generated by the energy storage mechanism into a driving force and transmitting it to the transmission connecting rod assembly 5 through the roller 51. The transmission connecting rod assembly 5 drives the closing and opening output main shaft 2 to rotate to realize the rapid closing action of the closing and opening output main shaft. This cam structure realizes rolling contact with the roller, so that the roller can cooperate with the contour curve of the cam structure to contact and transmit the motion trend, with small friction resistance, reduced wear, good accuracy retention, ability to carry large loads, and high transmission efficiency.

[0041] As a specific structural setting, the transmission connecting rod assembly 5 includes a first connecting rod 52, a second connecting rod 53 and a third connecting rod 54 connected in sequence, the first connecting rod 52 is connected to the opening plate 4, the third connecting rod 54 is linked with the closing and opening output main shaft 2, and a roller 51 is provided at the hinge of the first connecting rod 52 and the second connecting rod 53. The position of the roller 51 when the operating device performs opening and closing is as follows: Figure 3 , the transmission connecting rod assembly 5 drives the roller 51 to move toward the side close to the opening half shaft 41 when the closing and opening output main shaft 2 is in the opening position; and reference Figure 5, when the closing and opening output main shaft 2 is in the closing position, it drives the roller 51 to move away from the side of the opening half shaft 41. With this structural arrangement, when the operating device closes the switch by releasing the energy stored in the energy storage mechanism 3, the roller 51 is impacted by the cam structure and moves away from the side of the opening half shaft 41. At the same time, the driving force applied by the cam structure is transmitted to the closing and opening output main shaft 2 through the transmission cooperation of the multi-link mechanism, thereby driving the closing and opening output main shaft 2 to rotate quickly to the closing position to complete the closing process; it should be noted that one end of the opening spring is connected to the hanging plate of the closing and opening output main shaft, and the other end is connected to the mounting shaft of the frame. Therefore, when the closing and opening output main shaft rotates during closing, the opening spring will be stretched to store energy in the opening spring. Furthermore, the opening catch is driven by the transmission link assembly to abut against the opening half shaft, so as to maintain the energy storage of the opening spring. The opening spring in the energy storage state applies an opening acting force to the closing and opening output main shaft and the transmission link assembly, preparing for the subsequent energy release of the opening operation of the operating device. There is a closing and opening button on the frame for driving the closing half shaft and the opening half shaft to rotate. Therefore, during opening, since the opening half shaft 41 rotates to make way for the opening catch 4 and no longer restricts the opening spring in the energy storage state, the opening spring drives the closing and opening output main shaft 2 to rotate from the closing position to the opening position by releasing the stored energy, so that the transmission link assembly 5 drives the roller 51 to move closer to the side of the opening half shaft 41 under the drive of the closing and opening output main shaft 2, and transmits the opening acting force to the opening catch 4, so that the opening catch 4 rotates to the half groove position of the opening half shaft 41 to complete the opening process. This transmission link assembly realizes the conversion of motion and the transmission of torque by connecting multiple links and rollers, and has the advantages of simple structure, high efficiency, stable motion, etc. It can realize the conversion of various motion forms among the energy storage mechanism 3, the opening structure and the closing and opening output main shaft 2, with reliable transmission, convenient processing and manufacturing, and is beneficial to cost reduction.

[0042] The following will combine Figure 3-7 to make a detailed description of the specific setting method of the closing structure:

[0043] The closing structure includes a closing trigger structure for triggering the energy storage mechanism 3 to transition from the energy storage state to the energy release state. The closing trigger structure includes a closing plate 6 and a closing half-shaft 61 rotatably arranged on the frame 1, and a closing roller 7 fixed on the driving member 31. The energy storage mechanism 3 drives the closing roller 7 of the driving member 31 to press against one end of the closing plate 6 in the energy storage state, so as to drive the other end of the closing plate 6 to rotate against the closing half-shaft 61. The closing half-shaft 61 limits the closing plate 6, thereby constraining the energy storage mechanism 3 in the energy storage state. The limiting of the closing plate 6 can be released by rotating the closing half-shaft 61, so that the closing plate 6 rotates under the push of the closing roller 7. At this time, the energy storage mechanism 3 releases the stored energy, and contacts the roller 51 through the cam structure, and drives the closing and opening output main shaft 2 to complete the closing rotation through the transmission connecting rod assembly 5.

[0044] As a preferred embodiment, the energy storage mechanism 3 includes a camshaft 32 provided with a cam structure, a spring arm 33 and an energy storage positioning wheel 36 which are linked to the camshaft 32, and a driving gear 35 which is rotatably arranged on the camshaft 32, an energy storage spring 34 is arranged between the spring arm 33 and the frame 1, a limiting boss is arranged on the contour edge of the energy storage positioning wheel 36, and an energy storage latch 37 which forms a limiting match with the limiting boss is rotatably arranged on the side of the driving gear 35, and the driving gear 35 can be rotated under manual or electric drive, and the energy storage latch 37 pushes the energy storage positioning wheel 36 to drive the camshaft 32 to rotate when following the rotation of the driving gear 35, and the camshaft 32 realizes compression energy storage of the energy storage spring 34 during the rotation process, wherein the frame 1 is provided with an energy storage clutch lever 38 located on the movement path of the energy storage latch 37, and the energy storage mechanism 3 completes energy storage when the energy storage spring 34 moves to the middle inflection point position, refer to Figure 6 At this time, the energy storage latch 37 will be pressed and contacted with the energy storage clutch lever 38 and rotate, so that the energy storage latch 37 is separated from the limiting boss to release the limiting cooperation. At this time, the energy storage mechanism 3 that has completed energy storage drives the closing roller to just press against the closing buckle plate 6, thereby keeping the energy storage mechanism 3 in the energy storage state. Therefore, as long as the opening half shaft 41 is rotated to release the limiting effect on the closing buckle plate 6, the compression potential energy of the energy storage spring 34 can be released mechanically, so that the camshaft 32 can drive the cam structure to rotate rapidly with the help of the storage capacity released by the energy storage spring 34, thereby obtaining a fast and stable action that cannot be achieved by human power, so as to realize the closing operation of the closing output main shaft 2. This structural setting can prevent the camshaft 32 and the cam structure from self-rotating during the energy storage process of the energy storage spring 34 through the cooperation of the energy storage latch 37 and the energy storage positioning wheel 36, thereby ensuring the stability and reliability of the energy storage mechanism during the energy storage process.

[0045] Combined with Figure 1-2 、 Figure 6 As shown, a motor 11 and a storage handle 13 for driving the driving gear 35 to rotate are provided on the frame 1. An electric motor gear 12 meshing with the driving gear 35 is provided on the motor shaft of the motor 11. The motor achieves torque transmission with the driving gear 35 through the electric motor gear 12. In addition, a handle gear 14 meshing with the driving gear 35 is provided on the handle shaft of the storage handle 13. The storage handle 13 achieves torque transmission with the driving gear 35 through the handle gear 14. With such a design, the energy storage mechanism 3 can store energy manually or electrically.

[0046] In this embodiment, a first limit shaft 41 and a second limit shaft 62 are provided on the frame 1 respectively on the rotation paths of the opening catch plate 4 and the closing catch plate 6. The opening catch plate 4 and the first limit shaft 41 are respectively arranged on both sides of the opening catch plate 4. The closing catch plate 6 and the second limit shaft 62 are respectively arranged on both sides of the closing catch plate 6. Further preferably, a first torsion spring 43 is provided between the opening catch plate 4 and the first limit shaft. The first torsion spring 43 drives the opening catch plate 4 to rotate away from the opening half shaft 41 side, and the rotation stroke of the opening catch plate 4 is limited by the first limit shaft. The first torsion spring 43 is used to realize the reset function of the opening catch plate 4. Correspondingly, a second torsion spring is provided between the closing catch plate 6 and the second limit shaft 62. The second torsion spring drives the closing catch plate 6 to rotate away from the closing half shaft 61 side, and the rotation stroke of the closing catch plate 6 cannot be limited by the second limit shaft 62. The second torsion spring is used to realize the reset function of the closing catch plate 6.

[0047] Combined with Figure 2-4As shown, the frame 1 is provided with a tripping structure 8 for triggering the rotation of the opening half shaft 41, and the tripping structure 8 includes an electromagnetic release 81, an opening coupling shaft 82, and an opening connecting plate 83 connected between the opening coupling shaft 82 and the opening half shaft 41. The opening coupling shaft 82 is rotatably arranged on the frame 1, and an opening tripping rod 84 opposite to the electromagnetic release 81 is fixedly arranged on the opening coupling shaft 82. The vacuum circuit breaker has a detection circuit electrically connected to the electromagnetic release 81. The advantage of such a design is that when the vacuum circuit breaker detects a fault such as a short-circuit current, the electromagnetic release 81 will be triggered to act, and the electromagnetic release 81 The opening connecting shaft 82 will be driven to rotate, and the transmission coordination between the opening connecting shaft 82 and the opening half-shaft 41 is realized through the opening connecting plate 83, thereby driving the opening half-shaft 41 to realize tripping rotation. Since the limiting effect on the opening buckle plate 4 will be released after the opening half-shaft 41 rotates, the constraint on the energy storage of the opening spring will be released. At this time, the opening spring begins to release energy and drives the closing and opening output main shaft to realize the opening action. The coordinated transmission is reliable, so the circuit breaker can be tripped and opened in the event of a fault, which has a rapid disconnection protection effect on the circuit breaker and the power line, and the action response is sensitive, thereby ensuring the safety and reliability of the use of the circuit breaker.

[0048] In order to prevent the operating risk of secondary reclosing of the operating device, refer to Figure 8 A closing locking structure 9 for limiting the rotation of the closing half-shaft 61 is provided between the closing and opening output main shaft 2 and the closing half-shaft 61. The closing locking structure 9 includes a locking hook 91 rotatably arranged on the frame 1, a locking rod 92 fixedly connected to the closing half-shaft 61, and a locking cam 93 linked to the closing and opening output main shaft 2. A reset spring is provided between the locking hook 91 and the frame 1. When the closing and opening output main shaft 2 rotates to the closing position, the locking cam 93 pushes against the locking hook 91, thereby driving the locking hook 91 to rotate a certain angle, so that the hook end of the locking hook 91 just hooks on the locking rod 92 of the closing half-shaft 61, and the locking hook 91 and the locking rod 92 are limited. The purpose of limiting the rotation of the closing half-shaft is achieved, thereby avoiding the occurrence of secondary closing caused by misoperation, ensuring that the operating device is operated in a standardized manner in the correct order, and improving the safety and stability of the circuit breaker and the power system.

[0049] To sum up, the opening and closing operation process of the vacuum circuit breaker operating device is explained:

[0050] During the closing operation, the energy storage mechanism is energized either electrically or manually. At this time, the energy storage mechanism drives the closing roller to just press against the closing catch plate, causing the closing catch plate to be forced against the closing half shaft, thereby constraining the energy storage mechanism in the energy storage state. Therefore, simply rotating the closing half shaft to make way for the closing catch plate will release the constraint on the energy storage mechanism. At this time, the energy storage spring drives the camshaft to rotate rapidly by releasing the stored energy, and then the camshaft drives the cam structure to impact the roller of the transmission link assembly, and the closing and opening output main shaft is driven to rotate for closing through the transmission link assembly; and during the opening operation, according to the fact that the opening spring has been energized when the closing and opening output main shaft completes closing, and the opening catch plate is driven to press against the opening half shaft through the transmission link assembly. Therefore, by driving the opening half shaft to rotate to make way for the opening catch plate, and after the opening catch plate rotates, the energy storage constraint on the opening spring can be released. At this time, the opening spring can start to release the stored energy and drive the closing and opening output main shaft to rotate for opening.

[0051] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A vacuum circuit breaker operating device, comprising a closing structure, a tripping structure and a closing and tripping output main shaft (2) arranged on a frame (1), wherein the closing structure includes an energy storage mechanism (3) that can be manually or electrically energized, the tripping structure includes a tripping spring connected to the closing and tripping output main shaft (2), and a tripping catch plate (4) and a tripping half shaft (41) rotatably arranged on the frame (1), and is characterized in that: A transmission connecting rod assembly (5) is movably connected between the closing and opening output main shaft (2) and the opening shutter plate (4); the energy storage mechanism (3) has a driving member (31) for driving the transmission connecting rod assembly (5) to move in an energy release state; the driving member (31) is separated from the transmission connecting rod assembly (5) when the energy storage mechanism (3) is in an energy storage state; the transmission connecting rod assembly (5) is driven by the driving member (31) to rotate to a closing position; the opening shutter spring is stretched and stored when the closing and opening output main shaft (2) reaches the closing position, and exerts an opening shutter force on the connecting rod assembly through the closing and opening output main shaft (2) to drive the opening shutter plate (4) to rotate against the opening shutter semi-shaft (41).

2. The operating device of a vacuum circuit breaker according to claim 1, wherein: The driving member (31) is a cam structure driven by the energy storage mechanism (3), and the transmission connecting rod assembly (5) comprises a roller (51) in contact with the cam structure, and the movement trajectory of the roller (51) partially intersects with the movement trajectory of the cam structure.

3. The vacuum circuit breaker operating device according to claim 2, characterized in that: An arc-shaped clearance groove is provided on the contour edge of the cam structure, and the energy storage mechanism (3) drives the clearance groove of the cam structure to face the roller (51) in the energy storage state, and drives the cam structure to impact and contact the roller (51) in the energy release state.

4. The operating device of a vacuum circuit breaker according to any one of claims 1-3, characterized in that: The transmission connecting rod assembly (5) comprises a first connecting rod (52), a second connecting rod (53) and a third connecting rod (54) which are connected in sequence, wherein the first connecting rod (52) is connected to the opening brake plate (4), the third connecting rod (54) is linked to the closing and opening output main shaft (2), and a roller (51) is provided at the hinge between the first connecting rod (52) and the second connecting rod (53); when the closing and opening output main shaft (2) is in the opening position, the transmission connecting rod assembly (5) drives the roller (51) to move toward a side close to the opening brake half shaft (41), and when the closing and opening output main shaft (2) is in the closing position, the transmission connecting rod assembly (5) drives the roller (51) to move toward a side away from the opening brake half shaft (41).

5. The operating device of a vacuum circuit breaker according to claim 1, characterized in that: The closing structure comprises a closing trigger structure for triggering the energy storage mechanism (3) to transition from an energy storage state to an energy release state, the closing trigger structure comprising a closing plate (6) and a closing half shaft (61) rotatably arranged on a frame (1), and a closing roller (7) fixed on a driving member (31), wherein the energy storage mechanism (3) drives the closing roller (7) of the driving member (31) to press against one end of the closing plate (6) in the energy storage state, so as to drive the other end of the closing plate (6) to rotate and abut against the closing half shaft (61).

6. The vacuum circuit breaker operating device according to claim 5, characterized in that: The energy storage mechanism (3) comprises a camshaft (32) provided with a cam structure, a spring-hanging arm (33) and an energy storage positioning wheel (36) which are linked and arranged on the camshaft (32), and a driving gear (35) which is rotatably arranged on the camshaft (32); an energy storage spring (34) is arranged between the spring-hanging arm (33) and the frame (1); a limiting boss is arranged on the contour edge of the energy storage positioning wheel (36); and a rotatable boss is arranged on the side of the driving gear (35). An energy storage latch (37) is provided which forms a limiting fit with the limiting boss. When the energy storage latch (37) rotates following the driving gear (35), it pushes the energy storage positioning wheel (36) to drive the camshaft (32) to rotate. An energy storage clutch lever (38) located on the movement path of the energy storage latch (37) is provided on the frame (1). When the energy storage latch (37) is in compression contact with the energy storage clutch lever (38), it rotates and separates from the limiting boss to release the limiting fit.

7. The vacuum circuit breaker operating device according to claim 6, characterized in that: The frame (1) is provided with a motor (11) for driving the driving gear (35) to rotate and an energy storage handle (13); a motor shaft of the motor is provided with a motor gear (12) meshing with the driving gear (35); and a handle shaft of the energy storage handle (13) is provided with a handle gear (14) meshing with the driving gear (35).

8. The operating device of a vacuum circuit breaker according to any one of claims 5-7, characterized in that: The frame (1) is provided with a first limiting shaft (42) and a second limiting shaft (62) respectively located on the rotation paths of the opening plate (4) and the closing plate (6); a first torsion spring (43) is provided between the opening plate (4) and the first limiting shaft (42); the first torsion spring (43) drives the opening plate (4) to rotate away from the opening half-shaft (41); a second torsion spring is provided between the closing plate (6) and the second limiting shaft (62); the second torsion spring drives the closing plate (6) to rotate away from the closing half-shaft (61).

9. The vacuum circuit breaker operating device according to claim 1, wherein: The frame (1) is provided with a tripping structure (8) for triggering the rotation of the opening half-shaft (41); the tripping structure (8) comprises an electromagnetic release (81), an opening coupling shaft (82), and an opening connecting plate (83) connected between the opening coupling shaft (82) and the opening half-shaft (41); the opening coupling shaft (82) is rotatably arranged on the frame (1), and an opening tripping rod (84) opposite to the electromagnetic release (81) is fixedly arranged on the opening coupling shaft (82).

10. The operating device of a vacuum circuit breaker according to claim 8, characterized in that: A closing locking structure (9) for limiting the rotation of the closing half-shaft (61) is provided between the closing / opening output main shaft (2) and the closing half-shaft (61). The closing locking structure (9) comprises a locking hook (91) rotatably arranged on the frame (1), a locking rod (92) fixedly connected to the closing half-shaft (61), and a locking cam (93) linked to the closing / opening output main shaft (2). When the closing / opening output main shaft (2) rotates to the closing position, the locking cam (93) pushes against the locking hook (91) to drive the locking hook (91) to limit the hook against the locking rod (92).

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