Modular spring operating device for vacuum circuit breaker

Abstract

The utility model relates to a modularized spring operating device for a vacuum circuit breaker, which comprises a left partition plate, a right partition plate, an energy storage motor, a spring operating mechanism, a spring operating mechanism, a spring operating mechanism, a spring operating mechanism and a spring operating mechanism, the energy storage shaft penetrates through the left partition plate and the right partition plate; the output main shaft penetrates through the left partition plate and the right partition plate; the closing tripping mechanism is at least partially arranged in the inner cavity; the opening tripping mechanism is at least partially arranged in the internal cavity; the supporting shaft is located below the closing shaft and is adjacent to the opening shaft, and the supporting shaft is provided with an opening buckle plate used for keeping the output main shaft at the closing position. Therefore, existing mature parts can be mostly used in the modularized spring operating device and do not need to be developed again, so that the modularized spring operating device with good universality is provided with as little change as possible and as low cost as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of operating mechanism of medium and high voltage distribution system, especially to a modular spring operating device for vacuum circuit breaker. BACKGROUND

[0002] It is known that the circuit breaker cabinet is generally used in the medium and high voltage distribution system to supply power to residential areas and factory areas, and most of the cabinets use vacuum circuit breakers and disconnectors, and the opening and closing of the circuit is achieved by the opening and closing of the circuit breaker and switch contacts, so as to ensure the normal operation of power supply, and therefore the mechanical operating system relied on needs to meet various requirements to ensure the safe operation of the switch. In order to ensure the working performance and reliability of the circuit breaker, the working performance and quality of the operating mechanism need to be high. First, the switch needs to be reliable and stable, and the braking needs to be rapid; sufficient operating energy is needed to overcome the electric force generated by the short-circuit fault current to meet the opening and closing of the circuit breaker; the closing needs to be maintained to ensure that the circuit breaker remains in the closed position after the closing command and operating force disappear; and the functions of buffering, free tripping, opening, resetting and the like are needed.

[0003] In order to meet the above technical function requirements, a spring operating device for vacuum circuit breaker needs to be provided for the circuit breaker cabinet. Such a spring operating device can be seen in the utility model patent with the title of "Indoor high-voltage vacuum circuit breaker operating mechanism" and the patent right holder of Henan Senyuan Electrical Co., Ltd. and the authorization announcement number of CN2805696Y applied for in 2005, in which the mechanism box 12 of the operating mechanism is divided into five assembly intervals from left to right by four partitions, the main shaft 2 passes through the lower part of the box transversely, and is connected with three opening springs 1 through three groups of output crank arms 6; the energy storage motor 7 is connected with the chain wheel 11 through a chain, the chain wheel 11 and the cam 15 are directly fixed on the middle shaft 14, the closing crank arm 17 is fixed below the cam 15 through a pin, the closing half shaft 8 is fixed in front of the closing crank arm 17, the closing pawl 10 is fixed on the closing half shaft 8, and the closing electromagnet 16 is fixed behind the closing half shaft 8; the opening half shaft 4 is fixed in the second interval on the left side, the opening electromagnet 18 is fixed below the opening half shaft 4, and the oil buffer 5 is fixed at the back bottom of the interval; the micro switch 13 is fixed above the cam 15, and the auxiliary switch 3 is fixed in the leftmost interval and is linked with the main shaft. The operating mechanism has compact structure and good reliability, which helps to miniaturize the complete product in the electrical industry.

[0004] Although the operating mechanisms in the above documents have the advantage of stable operation, their body structures are still large, especially the components for realizing the functions of closing holding and opening release in the operating mechanism are arranged in multiple compartments, thereby existing the disadvantages of inconvenient fault maintenance, large number of components, long transmission chain and difficult to realize modularization, which makes the assembly requirement of the operating mechanism high, is not conducive to the standardization and generalization of the spring operating device for the vacuum circuit breaker, quality control and other difficulties, and the cost competitiveness of such operating mechanism is not obvious.

[0005] Therefore, there is still a real demand in the art to provide a modular spring operating device for a vacuum circuit breaker which can alleviate or eliminate the pain points of inconvenient fault maintenance, large number of components, long transmission chain and difficult to realize modularization in the spring operating device, preferably with as few modifications as possible and as low cost as possible. Content of the utility model

[0006] Therefore, the task of the present utility model is to provide a modular spring operating device for a vacuum circuit breaker, by which at least part of the above-mentioned disadvantages of the prior art are overcome.

[0007] According to one aspect of the present application, a modular spring operating device for a vacuum circuit breaker is provided, wherein the vacuum circuit breaker comprises a fixed sealed pole with a movable contact and a static contact, and a connecting mechanism connected between the modular spring operating device and the movable contact of the fixed sealed pole, wherein the connecting mechanism performs closing and opening operations of the movable contact in response to the action of the modular spring operating device, and comprises: left and right partitions arranged in parallel and spaced apart from each other, defining an internal chamber therebetween; an energy storage motor fixedly mounted to either of the left and right partitions; an energy storage shaft passing through the left and right partitions, wherein the ends of the energy storage shaft on both sides are provided with an energy storage arm and an energy storage spring in operative connection therewith, and the energy storage shaft is configured to be in operative connection with the energy storage motor to be driven to an energy storage position; an output main shaft passing through the left and right partitions, wherein the output main shaft is in operative connection with the energy storage shaft via a first linkage mechanism, and in the release position of the energy storage shaft, it drives the movable contact to perform closing operation; and a closing trip mechanism arranged at least partially in the internal chamber, comprising a closing shaft configured to switch the energy storage shaft between its energy storage position and release position, and a closing trip actuator for actuating the closing shaft, wherein the closing trip actuator is arranged in a gap between the left partition and the energy storage spring; an opening trip mechanism arranged at least partially in the internal chamber, comprising an opening shaft configured to switch the output main shaft between its closing holding position and opening position, and an opening trip actuator for actuating the opening shaft, wherein the opening trip actuator is arranged in a gap between the right partition and the energy storage spring; and a support shaft arranged below the closing shaft and adjacent to the opening shaft, wherein the support shaft is provided with an opening buckle for holding the output main shaft in the closing position.

[0008] Compared with the prior art, the modular spring operating device for a vacuum circuit breaker according to the present application has the advantages of modularity and compactness, which realizes the compactness, integration, universality and modularity of the whole by changing the positions, functional relationships and sizes of various functional components, thereby allowing the spring operating device to be taken out and replaced as a functional module from the vacuum circuit breaker during maintenance or maintenance. Further, most or even all of the secondary electrical components in the modular spring operating device for a vacuum circuit breaker according to the present application can use existing mature components without the need for re-development, thereby providing a modular spring operating device for a vacuum circuit breaker with good universality at the least possible modification and the lowest possible cost.

[0009] As an aspect preferred by the utility model, the switch-off trip includes: a switch-off electromagnet fixedly connected to the right partition plate via a support; a switch-off push rod arranged parallel to the switch-off electromagnet and in operative connection with the switch-off electromagnet; an interlock plate located at the upper end of the switch-off push rod and in action connection therewith; and an interlock catch plate in action connection between the interlock plate and the switch-off shaft, wherein the switch-off electromagnet acts in response to a switch-off signal and actuates the switch-off shaft between the closed position and the open position via the switch-off push rod, the interlock plate and the interlock catch plate in sequence.

[0010] As an aspect preferred by the utility model, the energy storage motor is located below the internal chamber and has a motor output shaft with a driving sprocket at the end, wherein the energy storage shaft has a driven sprocket in rotation-stopping connection therewith, and the driving sprocket and the driven sprocket are in action connection via a transmission chain, so that the energy storage shaft is switched to the energy storage position in response to the action of the energy storage motor.

[0011] As an aspect preferred by the utility model, the energy storage shaft is arranged along its axial direction close to the left partition plate and has a retaining wheel in rotation-stopping connection therewith, and the closed shaft has a retaining catch in rotation-stopping connection therewith, wherein the retaining catch is in abutment with the retaining wheel to retain the energy storage shaft at the energy storage position in response to the action of the energy storage motor.

[0012] As an aspect preferred by the utility model, the energy storage shaft further includes an actuating cam arranged along its axial direction close to the right partition plate, wherein the actuating cam is configured to be in abutment with a roller located above the first linkage mechanism, so as to actuate the first linkage mechanism when the energy storage shaft is switched from the energy storage position to the release position, thereby driving the output main shaft to pivotally act for the closing operation.

[0013] As an aspect preferred by the utility model, the energy storage shaft further includes a linkage plate arranged along its axial direction adjacent to the actuating cam, wherein the linkage plate is in action connection with a pivotable energy storage indicator located in the internal chamber, so as to externally display the position information of the energy storage shaft in response to the action of the energy storage shaft.

[0014] As an aspect preferred by the utility model, it further includes a switch-on and switch-off indicator located outside the left partition plate, wherein the switch-on and switch-off indicator is in action connection with the support shaft via a linkage rod, so as to externally output the indication information that the modular spring operating device is in the closed or open position in response to the rotation of the support shaft.

[0015] As an aspect preferred by the utility model, the first linkage mechanism is designed as a four-link transmission mechanism.

[0016] Some of the other features and advantages of the utility model will be apparent to those skilled in the art upon reading this application, and others will be described in the detailed description of the application below, in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] In the following, embodiments of the present application will be explained in detail with reference to the drawings, in which:

[0018] Figure 1 is a perspective view of a modular spring operating device for a vacuum circuit breaker according to an embodiment of the present application;

[0019] Figure 2 is Figure 1 a perspective view of the modular spring operating device for a vacuum circuit breaker in

[0020] Figure 3 is Figure 1 a rear view of the modular spring operating device for a vacuum circuit breaker in

[0021] Figure 4 is Figure 3 a partial enlarged view of the modular spring operating device for a vacuum circuit breaker in

[0022] Figures 5 to 8 is Figure 1 a front view of the modular spring operating device for a vacuum circuit breaker in

[0023] Figure 9 is Figure 5 a front view of the modular spring operating device for a vacuum circuit breaker in

[0024] Figure 10 is Figure 5 a rear view of the modular spring operating device for a vacuum circuit breaker in

[0025] Figure 11 is Figure 10 a sectional view of the modular spring operating device for a vacuum circuit breaker in

[0026] Figure 12 is Figure 5 a top view of the modular spring operating device for a vacuum circuit breaker in

[0027] Figure 13 is Figure 5 a side view of the modular spring operating device for a vacuum circuit breaker in

[0028] Figure 14 is Figure 5 a side sectional view of the modular spring operating device for a vacuum circuit breaker in

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 100. Modular spring operating device; 200; dead tank; 300. Connecting mechanism;

[0031] 101. Left partition; 102. Right partition; 103. Output spindle; 10. Energy storage motor;

[0032] 11. Motor output shaft; 12. Driving sprocket;

[0033] 13. Transmission chain; 14. Driven sprocket; 15. Linkage plate; 16. Energy storage indicator;

[0034] 20. Energy storage spindle; 21. Energy storage crank; 22. Energy storage spring; 23. Retaining wheel; 231. Abutting roller;

[0035] 24. Actuating cam; 30. Closing trip mechanism; 31. Closing spindle; 32. Retaining pawl;

[0036] 35. Closing trip; 40. Opening trip mechanism; 41. Opening spindle; 42. Opening pawl;

[0037] 43. Opening pawl; 44. Torsional spring; 45. Opening trip; 451. Bracket;

[0038] 452. Opening electromagnet; 453. Interlocking plate; 454. Opening push plate; 455. Opening button;

[0039] 456. Interlocking pawl; 457. Bracket; 46. Support spindle;

[0040] 47. Spindle sleeve; 48. Tensioning wheel; 50. Opening and closing indicator; 51. Linkage lever;

[0041] 60. First linkage mechanism; 61. Roller; 62. Linkage; A1. Output spindle axis

[0042] X. Length direction; Y. Thickness direction; Z. Height direction; DETAILED DESCRIPTION

[0043] With reference to the drawings, a detailed description will be given of the schematic solution of the modular spring operating device for vacuum circuit breakers disclosed by the present application. Although the drawings are provided in order to present some embodiments of the present application, the drawings are not necessarily drawn to scale in terms of the specific embodiments, and some features can be enlarged, removed or partially sectioned in order to better show and explain the disclosure of the present application. Some components in the drawings can be adjusted in position according to actual needs without affecting the technical effects. The phrase "in the drawings" or similar language appearing in the specification does not necessarily refer to all the drawings or examples.

[0044] Certain directional terms used in the following to describe the drawings, such as "inner", "outer", "upper", "lower" and other directional terms, will be understood to have their normal meaning and refer to those directions involved when normally viewing the drawings. Unless otherwise indicated, the directional terms described in this specification are in accordance with the conventional directions as understood by those skilled in the art.

[0045] The terms "first", "the first", "second", "the second", and similar terms used in the present utility model are not intended to indicate any order, number, or importance in the present utility model, but are used to distinguish one component from other components.

[0046] In Figures 1 to 14 A modular spring operating device 100 for a vacuum circuit breaker according to the present utility model is exemplarily shown in the drawings, which can be used to drive the vacuum circuit breaker switch to close, carry and break the current under normal loop conditions and can close, carry and break the current under abnormal loop conditions within a specified time. Herein, the spring operating device 100 is preferably applicable to a switch cabinet or a ring network cabinet with a vacuum circuit breaker 200. The modular spring operating device 100 for a vacuum circuit breaker according to the present utility model has many functional designs such as electric energy storage, energy storage retention, opening and closing indication, etc., and can be designed in a standardized or modularized manner, thereby allowing to significantly improve the compatibility and adaptability of the modular spring operating device 100 to the vacuum circuit breaker. This allows the original modular spring operating device 100 to be disassembled and replaced with a pre-prepared modular spring operating device 100, and then connected with the vacuum circuit breaker to be put into use again in the case of failure or maintenance of the modular spring operating device 100, thereby simplifying the installation and debugging of the vacuum circuit breaker on the one hand, and allowing to shorten the production cycle of the modular spring operating device 100 and meet the increasingly shortened delivery requirements of consumers for circuit breakers on the other hand.

[0047] In order to better represent the position of each functional component in the space and the relative action relationship with each other in the modular spring operating device 100 for a vacuum circuit breaker, the length direction of the modular spring operating device 100 for a vacuum circuit breaker is defined as the length direction or X direction, the longitudinal direction of the modular spring operating device 100 for a vacuum circuit breaker is defined as the thickness direction or Y direction, and the vertical height direction of the modular spring operating device 100 for a vacuum circuit breaker is defined as the height direction or Z direction, wherein the reference system composed of the above three or two directions is indicated in each view. It should be pointed out that the above reference system is only to make the skilled in the art more clearly and intuitively understand the present utility model, and it is not intended to limit the protection scope of the present utility model and should not be interpreted as a statement limiting the protection scope of the present utility model.

[0048] As Figures 1 to 3 shown, the utility model provides a vacuum circuit breaker, it includes modular spring operating device 100, solid seal pole 200 and connecting modular spring operating device 100 with the connecting mechanism 300 of solid seal pole 200. The upper half of solid seal pole 200 is provided with vacuum interrupter, the static contact is fixed in the vacuum interrupter, and the movable contact is arranged in the lower end and can move up and down, the static contact and movable contact are connected with the upper conducting block and lower conducting block of solid seal pole 200 respectively, when movable contact and static contact contact, current passes through static contact from upper conducting block, and then movable contact to lower conducting block, forms complete conducting loop. Operating insulator is connected below arc chamber, one end is connected with movable contact, the other end is connected with the connecting mechanism 300, plays the role of electrical isolation, operating insulator below extends the insulating pull rod, and movable contact can be controlled to move up and down by controlling insulating pull rod, realizes the contact or separation of movable contact and static contact. Here, the insulating pull rod is operationally connected with the output main shaft 103 of modular spring operating device 100 by connecting mechanism 300, so that movable contact and static contact in vacuum circuit breaker are switched between closing position and opening position along with the action of modular spring operating device 100 and have position holding function. Since the structure of solid seal pole 200 and connecting mechanism 300 and their operating and connecting relationship are known to those skilled in the art and are not the part of modular spring operating device 100 involved in the utility model, therefore their structure will not be described here.

[0049] In Figures 4 to 14 the structure of modular spring operating device 100 according to the utility model is shown, wherein the modular spring operating device 100 includes left partition plate 101 and right partition plate 102 arranged in parallel and spaced apart from each other, they are fixed together by means of a plurality of fasteners passing through both, so as to form an internal chamber between both for the movement member of modular spring operating device 100 to be arranged as described in detail later. As Figure 3 Best shown, here the modular spring operating device 100 is centrally located in the vacuum circuit breaker and its output main shaft 103 passes through the internal chamber defined by left partition plate 101 and right partition plate 102 below and is operatively connected with solid seal pole 200 (not shown here) by connecting mechanism 300.

[0050] Further, best shown in Figure 11 and 12As shown in the middle, the modular spring operating device 100 comprises a plurality of pivot shafts including the energy storage shaft 20, the closing shaft 31, the opening shaft 41 and the support shaft 46, which are pivotally arranged between the left partition plate 101 and the right partition plate 102 in sequence from top to bottom along the vertical direction (Z direction), and the first linkage mechanism 60 which is pivotally connected to the left partition plate 101 and the right partition plate 102. Here, as shown in Figure 11 and 12 As shown in the middle, the energy storage shaft 20 has energy storage levers 21 which protrude from the left partition plate 101 and the right partition plate 102 respectively, wherein the energy storage levers 21 are pivotally retained by means of energy storage springs 22 which are fixedly connected to the left partition plate 101 and the right partition plate 102.

[0051] To achieve the tripping operation of the closing shaft 31, a closing tripper 35 which is operatively connected to one end of the closing shaft 31 is arranged in the gap between the left partition plate 101 and the left energy storage spring 22, wherein the closing tripper 35 serves as an action which is triggered to actuate the closing shaft 31 when the closing operation of the vacuum circuit breaker is required, as described in detail below. At the same time, to achieve the tripping operation of the opening shaft 41, an opening tripper 45 which is operatively connected to one end of the opening shaft 41 is arranged in the gap between the right partition plate 102 and the right energy storage spring 22, wherein the opening tripper 45 serves as an action which is triggered to actuate the opening shaft 31 when the opening operation of the vacuum circuit breaker is required, as described in detail below. By means of such design, the free space of the modular spring operating device 100 can be effectively utilized and the unwanted interference of the moving parts in the operating device 100 can be prevented, thereby facilitating the compactness and modularity of the modular spring operating device 100.

[0052] Further, as most clearly shown in Figures 2-3 and 11, the first linkage mechanism 60 is arranged in the internal cavity defined by the left partition plate 101 and the right partition plate 102 by means of the pivot shafts in the thickness direction from behind, wherein the first linkage mechanism 60 is operatively located between the energy storage shaft 20 and the output main shaft 103, and transmits the energy and motion from the energy storage shaft 20 to the output main shaft 103 below by means of the roller 61 which abuts against the energy storage shaft 20 and the linkage 62 which is in action connection therewith, thereby achieving the operation of the static contact and the dynamic contact in the stationary pole 200 by means of the connecting mechanism 300.

[0053] In addition, as shown in Figures 10 to 12The modular spring operating device 100 further comprises a pivotable energy storage indicator 16 and a close-open indicator 50 as shown most clearly in the figures, which are respectively located in the internal cavities defined by the left partition plate 101 and the right partition plate 102. The energy storage indicator 16 is operatively connected with the energy storage shaft 20 as described below to correspondingly output the indication information of "energy stored" and "energy not stored" to the outside in response to the rotation of the energy storage shaft 20, and the close-open indicator 50 can output the indication information of "closed" and "opened" to the outside in response to the rotation of the support shaft 46 by means of the linkage rod 51 as described below. Figure 14 The linkage rod 51 is operatively connected with the support shaft 46 as shown most clearly in the figures to correspondingly output the indication information of "closed" and "opened" to the outside in response to the rotation of the support shaft 46.

[0054] Next, the operating components located in the modular spring operating device 100 will be described in greater detail in the following. Figures 1-14 The operating components located in the modular spring operating device 100 further comprise (in the order from bottom to top) the operating components located in the internal cavities defined by the left partition plate 101 and the right partition plate 102. The energy storage motor 10 is fixedly arranged on the side plate which is preferably the right partition plate 102, and the motor output shaft 11 is located above the energy storage motor 10. As shown in the figures, the motor output shaft 11 is operatively connected with the energy storage shaft 20 by means of the transmission chain 13 and the driven sprocket 14. Figure 7 As shown in the figures, the side end of the motor output shaft 11 opposite to the energy storage motor 10 is provided with the driving sprocket 12, and the driving sprocket 12 forms a chain transmission with the driven sprocket 14 which is rotatably arranged on the energy storage shaft 20 by means of the transmission chain 13 arranged around the circumference thereof. Thus, with the action of the energy storage motor 10, the driving sprocket 12 is driven, and the driven sprocket 14 and the energy storage shaft 20 which is rotatably connected with the driven sprocket 14 are driven to pivot by the transmission chain 13.

[0055] As shown in the figures, the side end of the motor output shaft 11 opposite to the energy storage motor 10 is provided with the driving sprocket 12, and the driving sprocket 12 forms a chain transmission with the driven sprocket 14 which is rotatably arranged on the energy storage shaft 20 by means of the transmission chain 13 arranged around the circumference thereof. Thus, with the action of the energy storage motor 10, the driving sprocket 12 is driven, and the driven sprocket 14 and the energy storage shaft 20 which is rotatably connected with the driven sprocket 14 are driven to pivot by the transmission chain 13. Figure 12 As shown in the figures, the energy storage shaft 20 is provided with the retaining wheel 23 which is rotatably connected with the energy storage shaft 20 or integrally connected with the energy storage shaft 20 and is configured to be operatively connected with the closing shaft 31 in the axial direction of the energy storage shaft 20 near the left partition plate 101, and the energy storage shaft 20 is provided with the actuating cam 24 which is rotatably connected with the energy storage shaft 20 or integrally connected with the energy storage shaft 20 and is configured to be operatively connected with the first linkage mechanism 60 near the right partition plate 102. Specifically, the retaining wheel 30 is provided with the abutting roller 231 on the circumference thereof, and the abutting roller 231 can abut against the retaining catch 32 on the closing shaft 31 to prevent the energy storage shaft 20 from moving away from the energy stored position. Figure 10 As shown in the figures, the actuating cam 24 on the energy storage shaft 20 is configured to abut against the roller 61 at the end of the linkage rod 62 above the first linkage mechanism 60 to actuate the first linkage mechanism 60 when the energy storage shaft 20 moves away from the energy stored position, which in turn drives the output main shaft 103 with the axis A1 below the modular spring operating device 100 to pivot and finally drives the fixed sealing pole 200 to act by means of the connecting mechanism 300. 12 As shown in the figures, the actuating cam 24 on the energy storage shaft 20 is configured to abut against the roller 61 at the end of the linkage rod 62 above the first linkage mechanism 60 to actuate the first linkage mechanism 60 when the energy storage shaft 20 moves away from the energy stored position, which in turn drives the output main shaft 103 with the axis A1 below the modular spring operating device 100 to pivot and finally drives the fixed sealing pole 200 to act by means of the connecting mechanism 300. As shown in the figures, the actuating cam 24 on the energy storage shaft 20 is configured to abut against the roller 61 at the end of the linkage rod 62 above the first linkage mechanism 60 to actuate the first linkage mechanism 60 when the energy storage shaft 20 moves away from the energy stored position, which in turn drives the output main shaft 103 with the axis A1 below the modular spring operating device 100 to pivot and finally drives the fixed sealing pole 200 to act by means of the connecting mechanism 300.

[0056] Here, in Figure 8 and 14 The diagram shows a closing trip unit 35 located on the left partition 101. This closing trip unit 35 can be, for example, an electromagnet that can be triggered by an electrical signal. The output shaft of the electromagnet acts on the end of the closing shaft 31 via a transmission rod, thereby enabling the closing shaft 31 to respond to the action of the closing trip unit 35. The initial position of the holding stop 32 on the closing shaft 31 abutting against the abutting roller 231 on the energy storage shaft 20, and the disengagement of the holding stop 32 from the abutting roller 231 after the closing shaft 31 pivots, thereby switching between the closing positions of the moving contact and the stationary contact in the solidified pole 200. The specific operation is detailed below.

[0057] Furthermore, it is best to be in Figure 2 , 4 As shown in Figure 12, the circuit also includes a tripping shaft 41 located below the closing shaft 31 and spaced parallel to it, and a support shaft 46 arranged adjacent to the tripping shaft 41. One end of the support shaft 46 is pivotally disposed in the right partition 102 by means of a torsion spring 44 and is pivotable relative to the left partition 101 by means of a bushing 47 and a bearing (not shown). A tripping latch 42 is provided in the middle of the support shaft 46. Correspondingly, a tripping stop 43 is provided on the tripping shaft 41 that abuts against the tripping latch 42, so that, by means of the support shaft 46, the tripping latch 42 located thereon, and the tripping stop 43 abutting against it, the circuit can switch between the initial closing position and the tripping position after the tripping shaft 41 has rotated, in response to the rotation of the tripping shaft 41.

[0058] Here, in Figure 5 and 9 The diagram shows a trip unit 45 located on the right partition 102. This trip unit 45 can be, for example, a trip electromagnet 452 that can be triggered by an electrical signal. The trip electromagnet 452 is fixedly connected to the right partition 102 by means of a bracket 451. Here, the lower end of the trip electromagnet 452 is operatively connected to the lower end of a trip push rod 454 arranged parallel to the trip electromagnet 452. The upper end of the trip push rod 454 is operatively connected to the trip shaft 41 by means of an interlocking plate 453 and an interlocking latch plate 456 connected to the interlocking plate 453. This allows the trip electromagnet 452 to actuate in response to a trip signal triggered by a user operating a trip button located above it, and subsequently actuates the trip shaft 41 between a closed holding position and a tripped position via the trip push rod 454, the interlocking plate 453, and the interlocking latch plate 456.

[0059] The following section will describe the energy storage, closing, and opening processes of this utility model in conjunction with the structure of the modular spring operating device 100 described above:

[0060] Energy storage operation: when using the modular spring operating device 100, first, the user can start the energy storage motor 10 to work, the driving sprocket 12 rotates around its own axis and drives the driven sprocket 14 located above and connected with the energy storage shaft 20 to rotate through the transmission chain 13. As a result, the driven sprocket 14 drives the energy storage shaft 20 to rotate against the spring force of the energy storage spring 22 connected through the energy storage crank 21 located on both sides of the energy storage shaft 20, so that the energy storage spring 22 is stretched to store energy, and at the same time, the energy storage indicator 16 is pivoted around its own axis by means of the linkage plate 15 located on the energy storage shaft 20 and makes the energy storage indicator 16 display the energy storage mark to the outside. In this way, the energy storage operation of the modular spring operating device 100 is completed. At this time, since the retaining catch 32 on the closing shaft 31 is in abutment with the abutment roller 231 in the retaining wheel 23 on the energy storage shaft 20, the retaining catch 32 keeps the energy storage shaft 20 in the energy storage state at this time.

[0061] Closing operation: when the closing operation is needed, first, the closing release 35 located on the right partition plate 102 is started, wherein the closing release 35 drives the closing shaft 31 to rotate, which makes the retaining catch 32 originally in abutment with the abutment roller 231 rotate away from the retaining wheel 23 connected with the energy storage shaft 20. As a result, the energy storage shaft 20 rotates rapidly under the action of the spring potential energy accumulated by the energy storage spring 22 located on both sides of the energy storage shaft 20 and drives the actuating cam 24 to hit the roller 61 in the first linkage mechanism 60 connected with the actuating cam 24 to depress. In this way, the first linkage mechanism 60 drives the output main shaft 103 with axis A1 to rotate, the output main shaft 103 rotates to drive the connecting mechanism 300 to act and further drive the moving contact of the vacuum interrupter in the sealed pole 200 to move to complete the closing. At this time, the opening spring is stretched to store energy. At this time, the opening catch plate 42 on the support shaft 46 abuts between the output main shaft 103 and the opening catch 43. As a result, the opening catch plate 42, the opening catch 43 and the output shaft 103 stop moving, at this time, the modular spring operating device 100 for the vacuum circuit breaker is in the closing holding state and is ready for the opening operation.

[0062] Splitting operation: as described above, after the output main shaft 103 completes the closing operation by means of the closing release 35 and the splitting spring energy storage is completed, at this time the modular spring operating device 100 for the vacuum circuit breaker is in the closing holding state and is ready for the splitting operation. At this time, the splitting operation can be performed according to the user's operation or remote control signal, and the specific operation is as follows: when the splitting release 45 located in the left partition plate 101 receives the splitting signal, the splitting half shaft 41 abutting against the splitting catch plate 42 can be rotated to release the abutting and restraining relationship between them. As a result, the splitting pawl 43 is switched from the first position to the second position in response to the rotation of the splitting half shaft 41. At this time, the splitting catch plate 42 can be freely rotated, and the splitting pawl 43 cannot be given enough holding force to continue to maintain the output main shaft 103 in the closing holding state. At this time, under the action of the force of the energy-stored splitting spring, the output main shaft 103 will rotate and in turn drive the connecting mechanism 300 to act, thereby driving the moving contact of the vacuum arc-extinguishing chamber of the fixed sealing pole 200 to complete the splitting operation. Subsequently, the modular spring operating device 100 for the vacuum circuit breaker can again store energy, close and split by means of the electric energy storage mechanism 10.

[0063] By means of the above design, most or even all of the secondary electrical parts in the modular spring operating device 100 for the vacuum circuit breaker according to the present application can use existing mature parts without the need for re-development, thereby providing a modular spring operating device for the vacuum circuit breaker with good versatility at the least possible modification and the lowest possible cost.

[0064] Further, based on the above description, the modular spring operating device 100 for the vacuum circuit breaker according to the present application can realize the overall compactness, integration, versatility and modularity by changing the positions, action relationships and sizes of the functional components, thereby allowing the spring operating device 100 to be taken out and replaced as a functional module from the vacuum circuit breaker during maintenance or maintenance.

[0065] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0066] The above description is only a specific embodiment of the present application, and is not intended to limit the scope of the present application. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principles of the present application shall fall within the scope of protection of the present application.

Claims

1. A modular spring operator for a vacuum circuit breaker, wherein the vacuum circuit breaker comprises a stationary pole with a fixed contact and a stationary contact and a connection mechanism acting between the modular spring operator and the movable contact of the stationary pole, wherein the connection mechanism performs closing and opening operations of the movable contact in response to the action of the modular spring operator, characterized in that, Comprising: left and right partition plates arranged substantially parallel and spaced apart from each other, defining an internal chamber therebetween; a storage motor fixedly mounted to either of the left and right partition plates; a storage shaft passing through the left and right partition plates, wherein end portions of the storage shaft on both sides are provided with a storage hanging arm and a storage spring in operative connection therewith, wherein the storage shaft is configured to be in operative connection with the storage motor to be driven to a storage position; an output main shaft passing through the left and right partition plates, wherein the output main shaft is in action connection with the storage shaft via a first linkage mechanism, wherein in a release position of the storage shaft it drives the moving contact to perform a closing operation; and a closing trip mechanism arranged at least partially in the internal chamber, comprising a closing shaft configured to switch the storage shaft between its storage position and release position, and a closing trip actuator configured to actuate the closing shaft, wherein the closing trip actuator is arranged in a gap between the left partition plate and the storage spring; a tripping mechanism arranged at least partially in the internal chamber, comprising a tripping shaft configured to switch the output main shaft between its closing holding position and tripping position, and a tripping actuator configured to actuate the tripping shaft, wherein the tripping actuator is arranged in a gap between the right partition plate and the storage spring; and a support shaft arranged below the closing shaft and adjacent to the tripping shaft, wherein the support shaft is provided with a tripping latch plate for holding the output main shaft in the closing position.

2. The modular spring operator of claim 1, wherein, wherein the tripping actuator comprises: a tripping electromagnet fixedly connected to the right partition plate via a bracket; a tripping push rod arranged parallel to the tripping electromagnet and in operative connection therewith; a interlock plate at an upper end of the tripping push rod and in action connection therewith; and an interlock latch plate in action connection between the interlock plate and the tripping shaft, wherein the tripping electromagnet acts in response to a tripping signal and in turn actuates the tripping shaft between the closing holding position and the tripping position via the tripping push rod, the interlock plate and the interlock latch plate.

3. The modular spring operator of claim 1, wherein, wherein the storage motor is located below the internal chamber and has a motor output shaft with a driving sprocket at an end portion thereof, wherein the storage shaft is provided with a driven sprocket in rotational connection therewith, wherein the driving sprocket and the driven sprocket are in action connection via a transmission chain, such that in response to the action of the storage motor the storage shaft is switched to the storage position.

4. The modular spring operator of claim 3, wherein the spring module is configured to be coupled to the housing module by a plurality of fasteners. wherein the storage shaft is provided with a holding wheel in rotational connection therewith along an axial direction thereof close to the left partition plate, and the closing shaft is provided with a holding latch in rotational connection therewith, wherein in response to the action of the storage motor the storage shaft is switched to the storage position, wherein the holding latch abuts against the holding wheel to hold the storage shaft in the storage position.

5. The modular spring operator of claim 3, wherein the spring module is configured to be coupled to the housing module by a plurality of fasteners. wherein the storage shaft further comprises an actuating cam arranged along an axial direction thereof close to the right partition plate, wherein the actuating cam is configured to abut against a roller located above the first linkage mechanism, such that in response to the storage shaft being switched from the storage position to the release position the first linkage mechanism is actuated, thereby driving the output main shaft to pivot and perform a closing operation.

6. The modular spring operator of claim 3, wherein the spring module is configured to be coupled to the housing module by a plurality of fasteners. wherein the storage shaft further comprises a linkage plate arranged along an axial direction thereof adjacent to the actuating cam, wherein the linkage plate is in action connection with a pivotable storage indicator located in the internal chamber, such that in response to the action of the storage shaft the position information of the storage shaft is displayed externally.

7. The modular spring operator of claim 3 wherein Further comprising a closing and opening indication board outside the left partition, wherein the closing and opening indication board is connected with the supporting shaft through a linkage rod to output indication information of the modular spring operating device outside in closing or opening state in response to the rotation of the supporting shaft.

8. The modular spring operator of claim 5, wherein the spring module is configured to be coupled to the housing module by a plurality of fasteners. The first linkage mechanism is designed as a four-bar linkage transmission mechanism.

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