A double position locking and unlocking mechanism for a switch device operating system

Abstract

A double-position locking and unlocking mechanism of a switch device operating system, characterized in that the double-position locking and unlocking mechanism comprises a limiting plate sleeved on a mounting shaft sleeve, a double-position linkage part on the mounting shaft sleeve passes through an arc-shaped horizontal slot hole and links with a waist-shaped limiting hole on the limiting plate, an unlocking limiting shaft linkage part is further arranged on the limiting plate, and the unlocking limiting shaft linkage part links with an unlocking shaft limiting linkage part. The double-position locking and unlocking mechanism is used for realizing stable conversion among three states of a normally-used side power supply closing, a standby side power supply closing and a double-position of a double power automatic transfer switch; when the three-position conversion ends and remains in a terminal position, corresponding locking devices are arranged to lock corresponding positions, and the double-position locking and unlocking mechanism can meet the requirement that no manual operation is required when manual closing and opening are performed, the whole mechanism has modularized position layout of parts, is compact in structure, convenient and fast in installation and maintenance, convenient in operation and high in reliability.

Description

Technical Field

[0001] This invention belongs to the field of low-voltage electrical technology, specifically relating to a dual-position locking and unlocking mechanism for a switch device operating system, which is particularly suitable for dual-power automatic transfer switches. Background Technology

[0002] Automatic transfer switches (ATS) are widely used in modern power transmission and distribution systems, especially in hospitals, intelligent buildings, data centers, power plants, banks, and critical infrastructure where continuous power supply is crucial. During operation, the reliability and stability of the ATS directly affect the continuous power output of the transmission and distribution lines. There are two types of ATS: two-position and three-position. Two-position ATSs switch between two states: the primary power supply is closed (while the backup power supply is open) and the backup power supply is closed (while the primary power supply is open), ensuring continuous, stable, and reliable power output. Three-position ATSs, in addition to achieving the two-position operation, can simultaneously have both the primary and backup power supplies open (i.e., double-open state) and lock the open state.

[0003] The operating system, as a core component of a dual-power automatic transfer switch, provides the kinetic energy for position switching and, through its output, drives the contact system of the automatic transfer switch to switch the closing position between the normal power supply and the standby power supply. Specifically, the operating system of a two-position automatic transfer switch has two states, corresponding to the normal power supply closed position and the standby power supply closed position, respectively. The operating system of a three-position automatic transfer switch has three states, corresponding to the normal power supply closed position, the standby power supply closed position, and the double open position, respectively.

[0004] However, existing three-position automatic transfer switches have locking mechanisms for the normal operating side, the standby side, and the dual-position side, and these locking mechanisms do not interfere with each other. This can easily lead to situations where only one position is locked, while the other is not, resulting in misoperation and safety accidents. Furthermore, existing dual-power automatic transfer switches have a dual-spindle structure, which cannot meet the requirement of same-side wiring. Another issue is that existing dual-power automatic transfer switches require manual operation for closing and opening, which can be problematic if the manual operation is too small, making it impossible to complete the action, while excessive manual operation can easily damage the switch. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing dual-power automatic transfer switch operating systems by providing a dual-position locking and unlocking mechanism for the switch operating system. This mechanism enables stable switching between three states: the primary power supply is closed (while the backup power supply is open), the backup power supply is closed (while the primary power supply is open), and both the primary and backup power supplies are open (i.e., dual-open). After the three position transitions are completed and the switch remains in the final position, corresponding locking devices lock the corresponding positions. The locking devices for each position are interconnected to prevent malfunctions and ensure that manual closing and opening are independent of human intervention. The entire dual-power automatic transfer switch operating system features a modular component layout, a compact structure, convenient and quick installation and maintenance, easy operation, and high reliability.

[0006] Technical solution

[0007] To achieve the above technical objectives, the present invention provides a dual-position locking and unlocking mechanism for a switch device operating system, characterized in that: the dual-position locking and unlocking mechanism includes a limiting plate, the limiting plate being fitted onto a mounting bushing, the dual-position linkage part on the mounting bushing passing through an arc-shaped horizontal slot and being linked with an oblong limiting hole on the limiting plate, the limiting plate also being provided with an unlocking limiting shaft linkage part, the unlocking limiting shaft linkage part being linked with the unlocking shaft limiting linkage part.

[0008] Furthermore, the corresponding unlocking levers on the commonly used and spare sides of the bracket are provided with an unlocking waist-shaped elongated hole at one end. The unlocking waist-shaped elongated hole is hung on the end of the corresponding flip-limit linkage shaft that passes through the corresponding arc-shaped elongated slot. The corresponding unlocking lever is provided with an unlocking waist-shaped elongated hole at the other end. The core of the unlocking electromagnet is equipped with an unlocking limit shaft. The unlocking limit shaft passes through the waist-shaped vertical slot in the clamp and is linked with the unlocking shaft limit linkage part on the limit plate. The other end of the corresponding unlocking lever is hung on the unlocking limit shaft through the unlocking waist-shaped elongated hole. The corresponding unlocking lever is connected to the corresponding unlocking lever return spring, which can provide a return force for the unlocking lever to return to the center position of the operating system. The corresponding unlocking lever is provided with an unlocking lever driven part, which is linked with the corresponding unlocking lever contact part on the toggle lever.

[0009] Furthermore, one end of the corresponding unlocking lever return spring is mounted on the unlocking lever return spring mounting shaft on the corresponding unlocking lever, and the other end is mounted on the corresponding unlocking lever return spring mounting ring. The unlocking lever return spring mounting ring is fitted on the mounting shaft sleeve and located outside the bracket.

[0010] Furthermore, the bracket is provided with an output system, which includes a mounting bushing that is rotatable within the mounting through hole.

[0011] Furthermore, the bracket includes a pair of side plates, which are connected and fixed together by a plurality of bracket connecting shafts.

[0012] Beneficial effects

[0013] This invention provides a dual-position locking and unlocking mechanism for a switchgear operating system. This mechanism enables stable switching between three states for a dual-power automatic transfer switch: the primary power supply is closed (while the backup power supply is open), the backup power supply is closed (while the primary power supply is open), and both the primary and backup power supplies are simultaneously open (i.e., dual-open). After the three position transitions are completed and the switch remains in the final position, corresponding locking devices lock the corresponding positions. The locking devices for each position are interconnected to prevent malfunctions and ensure that manual closing and opening are independent of human intervention. The entire dual-power automatic transfer switch operating system features a modular component layout, a compact structure, convenient and quick installation and maintenance, easy operation, and high reliability. Attached Figure Description

[0014] Appendix Figure 1 This is a schematic diagram of the operating system according to an embodiment of the present invention;

[0015] Appendix Figure 2 This is a schematic diagram of the operating system according to an embodiment of the present invention;

[0016] Appendix Figure 3a This is a schematic diagram of the structure of side plate one in an embodiment of the present invention. Figure 1 ;

[0017] Appendix Figure 3b This is a schematic diagram of the structure of side plate one in an embodiment of the present invention. Figure 2 ;

[0018] Appendix Figure 4 This is a schematic diagram of the structure of side plate two in an embodiment of the present invention;

[0019] Appendix Figure 5 This is a schematic diagram of the flipping lever in an embodiment of the present invention;

[0020] Appendix Figure 6 This is a schematic diagram of the rotating lever in an embodiment of the present invention;

[0021] Appendix Figure 7 This is a schematic diagram of the structure for installing the bushing in an embodiment of the present invention;

[0022] Appendix Figure 8 This is a schematic diagram of the skateboard structure in an embodiment of the present invention;

[0023] Appendix Figure 9 This is a schematic diagram of the lever structure in an embodiment of the present invention;

[0024] Appendix Figure 10 This is a schematic diagram of the structure of the flip-limit linkage shaft in an embodiment of the present invention;

[0025] Appendix Figure 11 This is a schematic diagram showing the connection between the unlocking electromagnet and the unlocking limiting shaft in an embodiment of the present invention;

[0026] Appendix Figure 12a This is a schematic diagram of the structure of a commonly used side-unlocking lever in the embodiments of the present invention;

[0027] Appendix Figure 12b This is a schematic diagram of the structure of the backup side unlocking lever in an embodiment of the present invention;

[0028] Appendix Figure 13a This is a schematic diagram of the structure of the indicator on the commonly used side in the embodiments of the present invention;

[0029] Appendix Figure 13b This is a schematic diagram of the structure of the indicator on the spare side in an embodiment of the present invention;

[0030] Appendix Figure 14 This is a schematic diagram showing the connection relationship between the electromagnet, the pull rod, and the flipping lever in an embodiment of the present invention;

[0031] Appendix Figure 15 This is a schematic diagram of the limiting plate in an embodiment of the present invention;

[0032] Appendix Figure 16 This is a schematic diagram of the operating system being in the standby power supply closed state in an embodiment of the present invention. Figure 1 ;

[0033] Appendix Figure 17 This is a schematic diagram of the operating system being in the standby power supply closed state in an embodiment of the present invention. Figure 2 ;

[0034] Appendix Figure 18 This is a schematic diagram showing the positions of the bushing, limit plate, unlock limit shaft, and unlock electromagnet when the operating system is in the standby power supply closed state in this embodiment of the invention.

[0035] Appendix Figure 19 This is a schematic diagram showing the position of the unlocking lever when the operating system is in the standby power supply closed state in an embodiment of the present invention;

[0036] Appendix Figure 20 This is a schematic diagram illustrating the transition of the operating system from the standby power supply closed state to the dual-position state in an embodiment of the present invention;

[0037] Appendix Figure 21 This is a schematic diagram of the operating system switching from the standby power supply closed state to the dual-position state with the rotary lever in the dead position in an embodiment of the present invention;

[0038] Appendix Figure 22 This is a schematic diagram illustrating the operating system's transition from the standby power supply closed state to the dual-position state, where the rotating lever has passed the dead point position. Figure 1 ;

[0039] Appendix Figure 23 This is a schematic diagram illustrating the operating system's transition from the standby power supply closed state to the dual-position state, where the rotating lever has passed the dead point position. Figure 2 ;

[0040] Appendix Figure 24 This is a schematic diagram of the lever returning to its original position in an embodiment of the present invention;

[0041] Appendix Figure 25a This is a schematic diagram of the operating system in the dual-position limiting plate position in an embodiment of the present invention;

[0042] Appendix Figure 25b This is a schematic diagram of the operating system in a dual-position configuration in an embodiment of the present invention;

[0043] Appendix Figure 26 This is a schematic diagram of the operating system being switched on with the power supply on the normal operating side in an embodiment of the present invention;

[0044] Appendix Figure 27 This is a schematic diagram of the operating system using the unlocking electromagnet to close the power supply on the common side in an embodiment of the present invention;

[0045] Appendix Figure 28 This is a schematic diagram of the operating system using the unlocking lever to close the power supply on the common side in an embodiment of the present invention;

[0046] Appendix Figure 29 This is a schematic diagram of the operating system being switched on with the power supply on the normal operating side in an embodiment of the present invention;

[0047] Appendix Figure 30 This is a schematic diagram of the indicator status when the operating system is in the standby power supply closed and the normal power supply open in an embodiment of the present invention;

[0048] Appendix Figure 31 This is a schematic diagram of the indicator state when the operating system is in a dual-position state in an embodiment of the present invention;

[0049] Appendix Figure 32 This is a schematic diagram of the indicator status when the operating system is in the state of the primary power supply closed and the backup power supply open in an embodiment of the present invention; Detailed Implementation

[0050] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, it should be noted that the terms "inner," "outer," "front," "rear," "left," "right," "usual side," and "spare side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0054] Example

[0055] As attached Figure 1 and 2 As shown, an operating system for a switching device includes a bracket 1, one side of which is the normal operating side and the other side is the standby side, as shown in the attached diagram. Figure 8 The slide plate 2 shown is positioned within the bracket 1 and can slide back and forth between the commonly used side and the spare side. The commonly used side and the spare side of the slide plate 2 are linked by corresponding flip-pull mechanisms A, A' and corresponding electromagnets B, B'. One end of the output system 3 is rotatably mounted on the bracket 1, and the other end is located outside the bracket 1. A toggle lever 4 is mounted on the bracket 1 and is rotatably mounted on the bracket 1, as shown in the attached diagram. Figure 9As shown, the actuating lever 4 is provided with a slide linkage part 401. The actuating lever 4 uses the slide linkage part 401 to drive the driven shaft 2b on the slide plate 2, causing the slide plate 2 to slide back and forth between the commonly used side and the spare side on the bracket 1. The actuating lever 4 is provided with an output system through hole 402 for the output system 3 to pass through. The support 1 is equipped with corresponding rotating levers C and C' on the commonly used side and the standby side, and corresponding main springs D and D'. The output system 3 is linked with the corresponding rotating levers C and C' and corresponding main springs D and D' on the commonly used side and the standby side of the support 1. The output system 3 can rotate back and forth under the combined action of the corresponding electromagnets B and B' or actuating levers 4 on the commonly used side and the standby side of the support 1, the flipping lever mechanism A and A', the rotating levers C and C', and the corresponding main springs D and D', thereby realizing the corresponding opening and closing operations and the operation of the double-opening position between the commonly used side power supply and the standby side power supply. The support 1 is also equipped with a double-opening position locking and unlocking mechanism F. When the output system 3 is in the closed position on the commonly used side and the standby side, it can be self-locked under the combined action of the corresponding rotating levers C and C', the main springs D and D', and the flipping lever mechanism A and A' on the commonly used side and the standby side. When the output system 3 is in the double-opening position, it can be locked or unlocked by the double-opening position locking and unlocking mechanism F.

[0056] The support 1 is equipped with corresponding indicating mechanisms E and E' on the normal and standby sides. The corresponding rotating levers C and C' are linked with the corresponding indicating mechanisms E and E' to indicate the opening and closing status of the power supply on the normal and standby sides.

[0057] The specific structure of each part in this embodiment is described in further detail below, as shown in the attached figure. Figure 1As shown in 3a, 3b and 4, the bracket 1 includes a pair of side plates 101, 101', which are connected and fixed together by a plurality of bracket connecting shafts 1a. The bracket 1 is provided with a mounting through hole 102 for mounting the output system 3. The bracket 1 has corresponding arc-shaped long slots 103 and 103' on the commonly used side and the spare side on both sides of the mounting through hole 102. The bracket 1 has corresponding mounting shafts 104 and 104' on the inner side of the bracket 1 between the mounting through hole 102 and the corresponding arc-shaped long slots 103 and 103'. The bracket 1 has an arc-shaped horizontal slot 109 below the through hole on the front surface of the bracket 1. An oblong vertical slot 110 passes through the bracket 1 below the arc-shaped horizontal slot 109. The bracket 1 has an indicator return spring mounting shaft 105 below the oblong vertical slot 110 on the inner front side of the bracket 1. The bracket 1 has corresponding electromagnet mounting parts 106 and 106' below the corresponding arc-shaped long slots 103 and 103' on both the front and rear surfaces of the bracket 1. The bracket 1 has a toggle lever mounting shaft 107 at a corresponding position below the mounting through hole 102 on the front surface of the bracket 1. The common side and the spare side of the bottom of the front surface of the bracket are provided with corresponding toggle lever return spring mounting shafts 108, 108', and the bracket between the corresponding toggle lever return spring mounting shafts 108, 108' is provided with an unlocking electromagnet mounting part 111.

[0058] As attached Figure 1 and 9 As shown, the toggle lever 4 has corresponding unlocking lever actuation parts 403 and 403' on its commonly used side and its spare side. The toggle lever 4 uses the corresponding unlocking lever actuation parts 403 and 403' to link with the double-position locking and unlocking mechanism F. The toggle lever 4 has corresponding toggle lever return springs 4a and 4a' connected to its commonly used side and spare side. During the rotation of the toggle lever 4 between its commonly used side and spare side, the toggle lever return springs 4a and 4a' can provide a return force. One end of the corresponding toggle lever return spring 4a and 4a' is mounted on the corresponding toggle lever return spring mounting part 404 and 404' on the toggle lever 4, and the other end is mounted on the corresponding toggle lever return spring mounting shaft 108 and 108' on the bracket 1. The lever 1 is provided with an unlocking limit shaft through hole 405 for the unlocking limit shaft F502 to pass through. The lever 1 is rotatably mounted on the lever mounting shaft 107 by means of the lever mounting hole 406 on it.

[0059] As attached Figure 1As shown in Figures 2 and 5, the corresponding flip lever mechanisms A and A' on the commonly used side and the spare side include corresponding flip levers A1 and A1'. These levers are rotatably mounted on corresponding mounting shafts 104 and 104' via mounting holes A1a and A1a'. The corresponding flip levers A1 and A1' are pivotally connected to the corresponding side of the slide plate 2 via corresponding slide plate shafts A2 and A2'. The corresponding slide plate shafts A2 and A2' pass through slide plate connection holes A1b and A1b' on the corresponding flip levers A1 and A1', and as shown in the attached figure. Figure 8 The corresponding side of the slide plate 2 shows the flip lever connection holes 2a, 2a'. The corresponding flip levers A1, A1' are provided with corresponding flip limit linkage shafts A101, A101', as shown in the attached figure. Figure 10 The corresponding flipping limit linkage shafts A101 and A101' shown pass through the flipping limit linkage shaft mounting holes A1c on the flipping levers A1 and A1'. A1c' is located within the corresponding arc-shaped elongated slots 103 and 103'. The corresponding flipping levers A1 and A1' are also provided with pull rod connecting parts A102 and A102'. In this embodiment, as shown in the attached figure... Figure 5 As shown, the connecting parts A102 and A102' of the pull rod are cylindrical protrusions, as shown in the attached diagram. Figure 1 As shown in Figures 2 and 14, the corresponding pull rods A3 and A3' on the commonly used side and the spare side are provided with pull rod linkage holes A301 and A301' corresponding to the pull rod linkage parts A102 and A102' on the corresponding flip levers A1 and A1'. The corresponding pull rods A3 and A3' are linked and installed in conjunction with the pull rod linkage parts A102 and A102' on the corresponding flip levers A1 and A1' through the pull rod linkage holes A301 and A301'. The corresponding pull rods A3 and A3' are also provided with electromagnet linkage parts A302 and A302', which are linkage holes. The corresponding pull rods A3 and A3' are linked with the iron cores B01 and B01' of the corresponding electromagnets B and B' through the electromagnet linkage parts A302 and A302'.

[0060] As attached Figure 1As shown in Figures 2 and 6, the corresponding rotating levers C and C' on the commonly used and spare sides of the bracket 1 are rotatably mounted on the corresponding mounting shafts 104 and 104' via rotating lever mounting holes Ca and Ca'. The corresponding rotating levers C and C' are linked to the output system 3 via corresponding rotating linkage shafts C1 and C1'. Both ends of the rotating linkage shafts C1 and C1' extend out of the rotating linkage shaft mounting holes C1a and C1a' of the rotating levers C and C'. The corresponding rotating levers C and C' are also provided with indicator linkage parts C2 and C2' for linking the corresponding indicator mechanisms E and E'. One end of the corresponding main springs D and D' on the commonly used and spare sides of the bracket 1 is mounted on the corresponding flip-limit linkage shafts A101 and A101', and the other end is mounted on the corresponding rotating linkage shafts C1 and C1'.

[0061] As attached Figure 1 and 2 As shown, the output system 3 includes a mounting sleeve 301, which is rotatable within the mounting through hole 102. An output shaft 302 is mounted within the mounting sleeve 301. During rotation within the mounting through hole 102, the mounting sleeve 301 can drive the output shaft 302 to rotate. Figure 7 As shown, the mounting bushing 301 is provided with corresponding linkage cantilever arms 301a and 301a' on the commonly used side and the spare side, respectively. The corresponding linkage cantilever arms 301a and 301a' are provided with linkage slots 301a01 and 301a01', respectively. Linkage limiting parts 301a0101 and 301a0101' are provided within the linkage slots 301a01 and 301a01', respectively. Figure 1 and 2 As shown, the corresponding rotating linkage shafts C1 and C1' are located in the corresponding linkage slots 301a01 and 301a01', so that the corresponding rotating levers C and C' on the commonly used side and the spare side of the bracket 1 are linked to the mounting bushing 301 during rotation, and then linked to the output shaft 302. The outer circular shaft surface of the mounting bushing 301 is provided with a double-position linkage part 301b. The double-position linkage part 301b passes through the arc-shaped horizontal slot 109 and is linked to the double-position locking and unlocking mechanism F.

[0062] As attached Figure 1 As shown, the dual-position locking and unlocking mechanism F includes a limiting plate F1. The limiting plate F1 is fitted onto the mounting sleeve 301 via the limiting plate mounting hole F1a. The dual-position linkage part 301b on the mounting sleeve 301 passes through the arc-shaped horizontal slot 109 and is linked with the waist-shaped limiting hole F101 on the limiting plate F1, as shown in the attached figure. Figure 15The limiting plate F1 shown also has an unlocking limiting shaft linkage part F102, which is a protrusion in the unlocking limiting shaft clearance hole F1b on the limiting plate F1. (See attached image) Figure 12a and 12b The commonly used and spare sides of the corresponding unlocking levers F2 and F2' are shown with an unlocking waist-shaped elongated hole F201 and F201' at one end. The unlocking waist-shaped elongated hole F201 and F201' are mounted on one end of the corresponding flip-limit linkage shafts A101 and A101' that protrude from the corresponding arc-shaped elongated slots 103 and 103'. The other end of the corresponding unlocking levers F2 and F2' is provided with an unlocking waist-shaped elongated hole F202 and F202', as shown in the attached figure. Figure 11 The core F501 of the unlocking electromagnet F5 shown is equipped with an unlocking limiting shaft F502. The unlocking limiting shaft F502 passes through the waist-shaped vertical slot 110 on the clamping plate 1 and is linked with the unlocking shaft limiting linkage part F102 on the limiting plate F. The other end of the corresponding unlocking levers F2 and F2' is hung on the unlocking limiting shaft F502 through the unlocking waist-shaped elongated holes F202 and F202'. The corresponding unlocking levers F2 and F2' are connected to the corresponding unlocking lever return springs F3 and F3', which can provide a return force for the corresponding unlocking levers F2 and F2' to return to the center position of the operating system. The corresponding unlocking levers F2 and F2' are provided with unlocking lever driven parts F203 and F203', which are linked with the corresponding unlocking lever actuating parts 403 and 403' on the toggle lever 4. One end of the corresponding unlocking lever return spring F3, F3' is mounted on the unlocking lever return spring mounting shaft F204, F204' on the corresponding unlocking lever F2, F2', and the other end is mounted on the unlocking lever return spring mounting ring F4. The unlocking lever return spring mounting ring F4 is fitted on the mounting sleeve 301 and located outside the bracket 1.

[0063] As attached Figure 1 As shown, the corresponding indicating mechanisms E, E' on the commonly used side and the spare side of the bracket 1 include indicating elements E1, E1'. The indicating elements E1, E1' are rotatably mounted on the corresponding mounting shafts 104, 104' via indicating element mounting holes E1a, E1a', as shown in the attached diagram. Figure 13a and 13bAs shown, the indicator E1, E1' is provided with indicator triggering parts E101, E101' and indicator linkage parts E102, E102'. In this embodiment, the indicator triggering parts E101, E101' are bends on the indicator E1, E1'. The indicator triggering parts E101 and E101' are linked with the indicator linkage parts C2 and C2' provided on the rotating levers C and C'. The indicator linkage parts E102 and E102' of the corresponding indicator mechanisms E and E' are linked with the corresponding flip-limit linkage shafts A101 and A101'. The indicator parts E1 and E1' are also provided with reset spring connecting parts E103 and E103'. One end of the corresponding indicator reset springs E2 and E2' on the commonly used side and the spare side of the bracket 1 is connected to the corresponding reset spring connecting parts E103 and E103', and the other end is connected to the corresponding indicator reset spring mounting shaft 105. The indicator parts E1 and E1' are provided with closing and opening indicator areas E104 and E104' for indicating the closing and opening status during the rotation of the indicator parts E1 and E1'.

[0064] In this embodiment, when the backup power supply is in the closed state, the position states of each component are as follows: (see attached diagram) Figure 16 As shown, the standby side flip limit linkage shaft A101' is located at the bottom end of the arc-shaped long slot 103', and the flip lever A1' is at its maximum clockwise rotation angle position. The iron core B01' of the electromagnet B' on the standby side is in the retracted state. Since the flip levers A1 and A1' are simultaneously linked with the slide plate 2, the flip limit linkage shaft A101 is located at the upper part of the arc-shaped long slot 103, the commonly used side flip lever A1 is at its maximum clockwise rotation angle position, and the iron core B01 of the electromagnet B on the commonly used side is in the extended state.

[0065] As attached Figure 16 As shown, the standby rotary lever C' is at its maximum counterclockwise rotation position under the action of the main spring D', and its indicator linkage part C2' is in contact with the indicator trigger part E101' of indicator E1' and overcomes the spring force of the indicator return spring E2', causing indicator E1' to display the closed state; the normally used rotary lever C is at its maximum counterclockwise rotation position under the action of the main spring D, and its indicator linkage part C2 is not in contact with the indicator trigger part E101 of indicator E1. Under the action of the spring force of indicator return spring E2, its indicator linkage part E102 is limited by the flip-limit linkage shaft A101, causing indicator E1 to display the open state as shown in the attached figure. Figure 17 As shown.

[0066] As attached Figure 17As shown, the line connecting the rotation centers of the commonly used side flip-limit linkage shaft A101 and the commonly used side rotation linkage shaft C1 is located above the rotation center O of the commonly used side rotating lever C, and the line connecting the rotation centers of the spare side flip-limit linkage shaft A101' and the spare side rotation linkage shaft C1' is located below the rotation center O' of the spare side rotating lever C'. At this time, the rotating lever C is subjected to the spring force of the main spring D and receives a counterclockwise torque, and the rotating lever C' is subjected to the spring force of the main spring D' and receives a counterclockwise torque. The normal line a of the contact surface between the linkage limiting part 301a0101 in the commonly used side linkage slot 301a01 on the mounting bushing 301 and the commonly used side rotation linkage shaft C1 points to the rotation center O of the commonly used side rotating lever C. In this embodiment, the electromagnet B on the commonly used side and the electromagnet on the spare side... With a longer stroke, the commonly used side's flip-limit linkage shaft A101 is located at the upper top of the arc-shaped long slot 103 on the commonly used side, and the spare side's flip-limit linkage shaft A101' is located at the lower top of the arc-shaped long slot 103' on the spare side, thus achieving limitation. Simultaneously, the strokes of the commonly used side's electromagnet B and the spare side's electromagnet B' can also be used to directly limit the positions of the commonly used side's flip-limit linkage shaft A101 and the spare side's flip-limit linkage shaft A101'. Specifically, the strokes of the commonly used side's electromagnet B and the spare side's electromagnet B' are designed to be relatively short, and their corresponding iron cores B01' and B01 can only move to their lowest point before stopping, thereby achieving the purpose of limiting the positions of the corresponding commonly used side's flip-limit linkage shaft A101 and the spare side's flip-limit linkage shaft A101'. Under the combined action of the rotating levers C and C', as shown in the attached... Figure 18 As shown, the mounting sleeve 301 is located at its maximum clockwise rotation position (i.e., the standby power supply closed position). The double-position linkage part 301b of the mounting sleeve 301 is located inside the waist-shaped limiting hole F101 on the limiting plate F1, and the unlocking limiting shaft linkage part F102 on the limiting plate F1 is located to the left of the unlocking limiting shaft F502; the iron core F501 of the unlocking electromagnet F5 is in the extended state. The double-position linkage part 301b is a columnar protrusion on the outer circumference of the mounting sleeve 301, and the unlocking limiting shaft linkage part F102 is a boss in the hole on the limiting plate F1. Due to the spring force of the toggle lever 4's return springs 4a and 4a', the right side of the sliding plate linkage part 401 of the toggle lever 4 contacts the driven shaft 2b on the sliding plate 2 as shown in the attached figure. Figure 19 As shown, in this embodiment, the sliding plate linkage part 401 is a horizontal hole.

[0067] As attached Figure 19As shown, due to the reset action of the unlocking lever return spring F3, the flipping limit linkage shaft A101 of the unlocking lever F2 is located at the leftmost position of the unlocking waist-shaped elongated hole one F201, and the unlocking limit shaft F502 is located at the rightmost position of the unlocking waist-shaped elongated hole two F202; due to the reset action of the unlocking lever return spring F3', the flipping limit linkage shaft A101' of the unlocking lever F2' is located at the rightmost position of the unlocking waist-shaped elongated hole one F201', and the unlocking limit shaft F502 is located at the rightmost position of its unlocking waist-shaped elongated hole two F202'.

[0068] When the standby power supply switches from the closed position to the open position: Rotate lever 4 counterclockwise. Lever 4 then moves slide plate 2 from right to left. Slide plate 2, in turn, moves flip levers A1 and A1' counterclockwise simultaneously. Alternatively, energize electromagnet B on the normal power supply side, causing core B01 to retract, which in turn pulls lever A3 and moves flip lever A1 counterclockwise. During this rotation, flip lever A1, via slide plate 2, moves flip lever A1' counterclockwise as well. (See attached diagram) Figure 20 As shown.

[0069] When the flip lever A1 rotates until the line connecting the rotation centers of the flip limit linkage shaft A101 and the rotation linkage shaft C1 passes through the rotation center O of the corresponding rotating lever C, the flip lever A1' also rotates until the line connecting the flip limit linkage shaft A101' and the rotation linkage shaft C1' passes through the rotation center O' of the rotating lever C'. The main spring D on the normally used side does not generate a rotational torque on the corresponding rotating lever C, thus placing the corresponding rotating lever C in a dead position. Similarly, the main spring D' on the spare side does not generate a rotational torque on the corresponding rotating lever C', thus placing the corresponding rotating lever C' in a dead position. (See attached diagram) Figure 21 As shown.

[0070] As attached Figure 22 As shown, the flip levers A1 and A1' continue to rotate counterclockwise until they reach their positions. At this point, the line connecting the rotation centers of the flip limit linkage shaft A101 and the rotation linkage shaft C1 is below the rotation center O of the rotating lever C, and the line connecting the flip limit linkage shaft A101' and the rotation linkage shaft C1' is above the rotation center O' of the rotating lever C'. The rotating lever C is subjected to the spring force of the main spring D and a clockwise torque, while the rotating lever C' is subjected to the spring force of the main spring D' and a clockwise torque. Clockwise torque; the rotating lever C rotates clockwise, causing the rotating linkage shaft C1 to slide inside the linkage slot 301a01, and the rotating lever C' rotates clockwise, causing the rotating linkage shaft C'1 to slide inside the linkage slot 301a01'. During the sliding process, the rotating linkage shaft C and the rotating linkage shaft C' are linked to the mounting sleeve 301 to rotate counterclockwise. The counterclockwise rotation of the mounting sleeve 301 is linked to the output shaft 302 to also output counterclockwise rotation, thereby tripping the backup power supply.

[0071] As attached Figure 23 As shown, during the counterclockwise rotation of lever 4, the unlocking lever contact part 403 is linked to the unlocking lever driven part F203 of unlocking lever F2, and overcomes the spring force of unlocking lever return spring F3, causing the flipping limit linkage shaft A101 to slide within the unlocking oblong hole F201 of unlocking lever F2, and simultaneously causing the unlocking limit shaft F502 to slide within the unlocking oblong hole F202 of unlocking lever F2. As a result, unlocking lever F2 slides away from the center of the operating system. After the counterclockwise rotation of lever 4 is completed, lever 4 is released, and it performs a clockwise reset operation under the action of lever return spring 4a'. Its unlocking lever contact part 403 disengages from the unlocking lever driven part F203 of unlocking lever F2, and unlocking lever F2 resets towards the center of the operating system under the action of unlocking lever return spring F3. Finally, the unlocking lever driven part F203 is located below the unlocking lever contact part 403 of lever 4, as shown in the attached figure. Figure 24 As shown.

[0072] When the mounting bushing 301 rotates counterclockwise, its double-position linkage part 301b actuates the oblong limiting hole F101 on the limiting plate F1, causing the limiting plate F1 to rotate counterclockwise. During the counterclockwise rotation of the limiting plate F1, its unlocking limiting shaft linkage part F102 is limited by the unlocking limiting shaft F502 (at this time, the unlocking limiting shaft linkage part F102 is located to the left of the unlocking limiting shaft F502). After the limiting plate F1 is limited, the oblong limiting hole F101 also passes through the double-position linkage part 301b in reverse. 1b limits the counterclockwise rotation of the mounting sleeve 301; at this time, the line connecting the rotation centers of the flip-limit linkage shaft A101 and the rotation linkage shaft C1 is still below the rotation center O of the rotating lever C, and the line connecting the flip-limit linkage shaft A101' and the rotation linkage shaft C1' is still above the rotation center O' of the rotating lever C'. The rotating lever C is subjected to the spring force of the main spring D and a clockwise torque, and the rotating lever C' is subjected to the spring force of the main spring D' and a clockwise torque as shown in the attached figure. Figure 25a and 25b As shown;

[0073] After the mounting sleeve 301 is unlocked by the limit plate F1 and the limit shaft F502 is limited, the operating system is in a state where neither the backup power supply nor the normal power supply is connected. This state is the dual-position state of the dual power automatic transfer switch.

[0074] When switching from the dual-position state to the standby power supply connection: In this state, the electromagnet B' on the standby side is energized, causing its core B01' to retract, or the lever 4 is rotated clockwise while the flip levers A1 and A1' rotate clockwise; after rotation, the line connecting the rotation centers of the flip limit linkage shaft A101 and the rotation linkage shaft C1 is above the rotation center O of the rotation lever C, and the line connecting the flip limit linkage shaft A101' and the rotation linkage shaft C1' is below the rotation center O' of the rotation lever C'. The rotation levers C and C', due to the counterclockwise torque, rotate counterclockwise simultaneously. They rotate clockwise through the linkage shafts C1 and C1', which in turn drive the mounting sleeve 301, thus achieving the standby power supply connection of the operating system (see attached figure). Figure 19 As shown.

[0075] When this embodiment transitions from the dual-position state to the normal power supply closing state: In the dual-position state, the limit plate F1 is limited by the unlocking limit shaft F502. Energizing the unlocking electromagnet F5 causes its core F501 to retract. The core F501 then moves the unlocking limit shaft F502 downwards within the waist-shaped vertical slot 110. During this movement, the unlocking limit shaft F502 disengages from the unlocking limit shaft linkage part F102 of the limit plate F1, releasing the lock on the limit plate F1. Simultaneously, the limit plate F1 also releases the lock on the dual-position linkage part 301b of the mounting sleeve 301. Under the action of the main springs D,D', the rotating levers C,C' rotate the mounting sleeve 301 counterclockwise, thereby driving the output shaft 302 to rotate counterclockwise, thus closing the normal power supply as shown in the attached diagram. Figure 26 and 27 As shown.

[0076] Alternatively, in the dual-position state, the limiting plate F1 is limited by the unlocking limiting shaft F502. At this time, rotating the lever 4 counterclockwise causes its unlocking lever contact part 403 to press the unlocking lever driven part F203 of the unlocking lever F2. Under the action of the unlocking lever return spring F3, the unlocking lever F2 rotates clockwise around the flipping limiting linkage shaft A101. During the clockwise rotation of the unlocking lever F2, it moves the unlocking limiting shaft F502 downward and slides within the waist-shaped vertical slot 110. During the downward movement of the unlocking limiting shaft F502, its linkage part F102 with the unlocking limiting shaft of the limiting plate F1 releases the lock on the limiting plate F1, as shown in the attached figure. Figure 28 As shown, simultaneously, the limit plate F1 also releases the lock on the double-position linkage part 301b of the mounting sleeve 301. Under the action of the main springs D and D', the rotating levers C and C' drive the mounting sleeve 301 to rotate counterclockwise, thereby driving the output shaft 302 to rotate counterclockwise, realizing the closing of the power supply on the normal side as shown in the attached figure. Figure 28 As shown.

[0077] After the power supply on the normal operating side completes the closing action, the line connecting the rotation centers of the standby side's flip-limit linkage shaft A101' and the standby side's rotary linkage shaft C1' is located above the rotation center of the standby side's rotary lever C', and the line connecting the rotation centers of the normal operating side's flip-limit linkage shaft A101 and the normal operating side's rotary linkage shaft C1 is located below the rotation center of the normal operating side's rotary lever C. The normal line b of the contact surface between the linkage limiting part 301a0101' in the standby side's linkage slot 301a01' on the mounting sleeve 301 and the standby side's rotary linkage shaft C1' points to the rotation center of the standby side's rotary lever C'. At this time, the standby side's flip-limit linkage shaft A101' is located at the upper top of the standby side's arc-shaped long slot 103', and the normal operating side's flip-limit linkage shaft A101 is located at the lower top of the normal operating side's arc-shaped long slot 103, thus achieving a limit. That is, the mounting sleeve 301 is locked in position by the rotary lever C' and cannot be rotated clockwise (see attached). Figure 29 As shown.

[0078] In this embodiment, the indicating state of the indicator is as follows: When the standby power supply is in the closed state: the standby rotating lever C' is at its maximum counterclockwise rotation position under the action of the main spring D', and its indicator linkage part C2' contacts the indicating touch part E101' of the indicator E1', overcoming the spring force of the indicator return spring E2', so that the indicator E1' is at its maximum counterclockwise rotation position, indicating the closed state; at the same time, the rotating lever C on the normal side is at its maximum counterclockwise rotation position under the action of the main spring D, and its indicator linkage part C2 is not in contact with the indicating touch part E101 of the indicator E1. Under the action of the spring force of the indicator return spring E2, the indicator E1 is at its maximum counterclockwise rotation position, and its indicating linkage part E102 is limited by the flip-limit linkage shaft A101, so that the indicator E1 indicates the open state as shown in the attached figure. Figure 30 As shown.

[0079] When the operating system is in the double-open state: the mounting sleeve 301 is restricted to the double-open state. At this time, the indicator linkage part C2' of the rotating lever C' and the indicator touch part E101' of the indicator E1' are not in contact. The spring force of the indicator return spring E2' causes the indicator E1' to display the open state. At the same time, the indicator linkage part C2 of the rotating lever C and the indicator touch part E101 of the indicator E1 are not in contact. Under the spring force of the indicator return spring E2, the indicator E1 displays the open state as shown in the attached figure. Figure 31 As shown.

[0080] When the power supply on the normal operating side is in the closed state: the rotary lever C on the normal operating side is at its maximum clockwise rotation position under the action of the main spring D. Its indicator linkage part C2 is in contact with the indicator touch part E101 of the indicator E1, and overcomes the spring force of the indicator return spring E2, so that the indicator E1 is at its maximum clockwise rotation position, and the indicator E1 shows the closed state; at the same time, the rotary lever C' on the standby side is at its maximum clockwise rotation position under the action of the main spring D'. Its indicator linkage part C2' is not in contact with the indicator touch part E101 of the indicator E1. Under the action of the spring force of the indicator return spring E2', the indicator E1' is at its maximum clockwise rotation position. Its indicator linkage part E102' is limited by the flip limit linkage shaft A101', so that the indicator E1' shows the open state, as shown in the attached figure. Figure 32 As shown.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-position locking and unlocking mechanism for a switching device operating system, characterized in that: The dual-position locking and unlocking mechanism includes a limiting plate and a bracket. The limiting plate is fitted onto a mounting bushing. The dual-position linkage part on the mounting bushing passes through an arc-shaped horizontal slot and is linked with the waist-shaped limiting hole on the limiting plate. The limiting plate is also provided with an unlocking limiting shaft linkage part, which is linked with the unlocking shaft limiting linkage part. The bracket has a first unlocking slot on one end of the corresponding unlocking lever on both the commonly used and spare sides. The first unlocking slot is hung on the end of the corresponding flip-limit linkage shaft that passes through the corresponding arc-shaped slot. The other end of the corresponding unlocking lever has a second unlocking slot. The core of the unlocking electromagnet is equipped with an unlocking limit shaft. The unlocking limit shaft passes through the slotted vertical slot on the clamp and is linked with the unlocking shaft limit linkage part on the limit plate. The other end of the corresponding unlocking lever is hung on the unlocking limit shaft through the second unlocking slot. The corresponding unlocking lever is connected to the corresponding unlocking lever return spring, which can provide a return force for the unlocking lever to return to the center position of the operating system. The corresponding unlocking lever is provided with an unlocking lever driven part, which is linked with the corresponding unlocking lever actuating part on the toggle lever.

2. The dual-position locking and unlocking mechanism for a switching device operating system as described in claim 1, characterized in that: One end of the corresponding unlocking lever return spring is mounted on the unlocking lever return spring mounting shaft on the corresponding unlocking lever, and the other end is mounted on the corresponding unlocking lever return spring mounting ring. The unlocking lever return spring mounting ring is fitted on the mounting shaft sleeve and located outside the bracket.

3. The dual-position locking and unlocking mechanism for a switching device operating system as described in claim 1, characterized in that: The bracket is provided with an output system, which includes a mounting bushing that is rotatable within a mounting through hole.

4. A dual-position locking and unlocking mechanism for a switching device operating system as described in claim 1 or 2, characterized in that: The bracket includes a pair of side plates, which are connected and fixed together by a number of bracket connecting shafts.

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