High-voltage switch spring operating mechanism

Abstract

The application discloses a high-voltage switch spring operating mechanism, which comprises a spring (54) for storing mechanical potential energy and an energy storage shaft for transmitting torque, the spring is arranged on the energy storage shaft and drives the energy storage shaft to rotate, an eccentric shaft and a driving roller are sequentially fixed on the energy storage shaft, the driving roller is installed on the eccentric shaft, the driving roller is also located in a vertical slot of a driving crank arm, the rotation of the energy storage shaft drives the driving roller to rotate in the same direction and eccentrically, so that the driving crank arm swings left and right around a supporting shaft, and the other end of the driving crank arm drives an output crank arm to swing through a transmission connecting rod. The spring operating mechanism has the characteristics of simple structure, low cost, low operation power consumption, short and small range of breaking time, stable and reliable energy storage of an energy storage release device.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switch operating mechanism technology, and in particular to a high-voltage switch spiral spring operating mechanism. Background Technology

[0002] Currently, the known characteristics of high-voltage switch spring operating mechanisms are as follows:

[0003] Spring-operated mechanisms mainly include tension spring or compression spring energy storage mechanisms and spiral spring energy storage mechanisms. Both utilize the instantaneous release of potential energy stored in the spring to drive the switch to move quickly, thus extinguishing the electric arc. The difference between the two is: the former requires a cam to strike a roller to drive the crank arm to rotate, achieving the closing operation while simultaneously storing energy in the opening spring, allowing for opening at any time. Its disadvantages are higher impact force and shorter mechanical life; the latter utilizes the potential energy stored in the spiral spring to directly drive the rotating shaft to rotate continuously, and then uses a curved plate to convert the rotational motion into the reciprocating swing motion of a crank arm, ultimately driving the switch to close or open. The latter has lower impact force, longer life, and more stable characteristics, but the curved plate is more difficult to manufacture, resulting in higher overall machine cost.

[0004] To reduce the electrical power consumed when the electromagnetic trip coil closes or opens, many use energy storage trip units, which rely on the potential energy stored in the trip unit's pressure spring to drive the switch to close or open. However, the mechanism for storing mechanical potential energy in the energy storage trip unit is too complex and not stable enough. If the energy storage fails, the switch will fail to operate, expanding the scope of the accident. Summary of the Invention

[0005] The purpose of this invention is to provide a high-voltage switch spring operating mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-voltage switch spring operating mechanism includes a spring 54 for storing mechanical potential energy and an energy storage shaft 57 for transmitting torque. The spring 54 is mounted on the energy storage shaft 57 and drives the energy storage shaft 57 to rotate. An eccentric shaft 56 and a drive roller 60 are sequentially fixed on the energy storage shaft 57. The drive roller 60 is mounted on the eccentric shaft 56 via a needle roller bearing 78. The drive roller 60 is also located in a vertical slot of a drive crank arm 44. The rotation of the energy storage shaft 57 causes the drive roller 60 to rotate eccentrically in the same direction, thereby... The drive crank arm 44 swings left and right around the support shaft 62. The other end of the drive crank arm 44 drives the output crank arm 11 and the switch status indicator shaft 9 to swing synchronously through the transmission link 12. The other end of the energy storage shaft 57 is also fixed with an energy storage crank arm 29 that rotates synchronously with it. The two sides of the energy storage shaft 57 are respectively provided with a closing energy storage leaf spring 28 and a opening energy storage leaf spring 13. The closing energy storage leaf spring 28 and the opening energy storage leaf spring 13 are linked with the closing energy storage trip unit 30 and the opening energy storage trip unit 14 on both sides respectively.

[0008] In a further embodiment, a control crank arm 63 that rotates synchronously with the energy storage shaft 57 is also fixed on the energy storage shaft 57. A closing holding stop 72 and a opening holding stop 53 are respectively provided on both sides of the energy storage shaft 57. An opening half shaft 21 and a closing half shaft 32 that block the rotation of the closing holding stop 72 and the opening holding stop 53 are respectively provided on one side.

[0009] In a further embodiment, a closing trip unit 5 is provided on one side of the closing half-shaft 32, and a closing trip plate 2 is provided on one side of the closing trip unit 5. When the closing trip unit 5 is energized, it impacts the closing trip plate 2 through the closing trip unit impact rod 66, causing the closing half-shaft 32 to rotate and releasing the obstruction of the opening holding stop 53 to the control crank arm 63. A opening trip unit 48 is provided on one side of the opening half-shaft 21, and a opening trip plate 18 is provided on one side of the opening trip unit 48. The opening trip unit 48 impacts the opening trip plate 18 through the moving iron core, causing the opening half-shaft 21 to rotate and releasing the obstruction of the closing holding stop 72 to the control crank arm 63.

[0010] In a further embodiment, an energy-storing closing trip plate 33 is also fixed on the closing half-shaft 32. After the closing energy-storing trip unit 30 is energized, it releases potential energy and impacts the energy-storing closing trip plate 33 through the closing impact ball 34, causing the closing half-shaft 32 to rotate and releasing the obstruction of the opening holding stop 53 to the control crank arm 63. An opening trip plate 18 is fixed on the opening half-shaft 21. After the opening energy-storing trip unit 14 is energized, it releases potential energy and impacts the opening trip plate 18 through the opening impact ball 19, causing the opening half-shaft 21 to rotate and releasing the obstruction of the closing holding stop 72 to the control crank arm 63.

[0011] In a further embodiment, the end of the energy storage crank arm 29 is provided with an energy storage roller 31. When the circuit is closed or opened, one end of the closing energy storage leaf spring 28 or the opening energy storage leaf spring 13 is pushed by the energy storage roller 31 to rotate, and the other end abuts against the moving iron core of the closing energy storage trip unit 30 or the opening energy storage trip unit 14 respectively to press the spring to store energy and self-lock.

[0012] In a further embodiment, it also includes a manual closing push rod 4, a manual operating handle 20, a manual energy storage handle 27, and a base plate 1, a front plate 15, an upper plate 52, a lower plate 23, and a main plate 37 that serve as mounting supports.

[0013] In a further embodiment, an energy storage motor 24 is provided on one side of the spiral spring 54. When the energy storage is in place, a slider controls the energy storage control micro switch 3 through the interlocking plate to cut off the power to the energy storage motor 24 and control the active bevel gear 39 to separate from the passive bevel gear 38. At the same time, the interlocking plate controls the energy storage indicator shaft 7 and the energy storage status pointer 6 to move.

[0014] In a further embodiment, a buffer pad 65 and a bushing 64 are also provided between the energy storage shaft 57 and the control crank arm 63.

[0015] In a further embodiment, one end of the drive crank arm 44 is rotatably connected to an interlocking rod 69, and the other end of the interlocking rod 69 is connected to an interlocking crank arm 16 for interlocking the tripping operation of the isolating switch.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] It leverages the advantages of a spiral spring mechanism, but with a simple structure and low cost;

[0018] When mechanically storing energy in the energy storage trip unit, not only is an overshoot given through the deformation of the leaf spring, but there is also a continuous pressing process during closing and opening to ensure successful energy storage each time.

[0019] The switching mechanism and the disconnecting switch mechanism are integrated, which makes the interlocking simple and the cost low. Attached Figure Description

[0020] Figure 1 This is a front view of a high-voltage switch spring operating mechanism in the open position.

[0021] Figure 2 This is a right-side view of a high-voltage switch spring operating mechanism;

[0022] Figure 3 This is a left-side view of a high-voltage switch spring operating mechanism;

[0023] Figure 4 This is a type of high-voltage switch spiral spring operating mechanism Figure 1 Sectional view along axis AA;

[0024] Figure 5 This is a back-axis view of the high-voltage switch spring operating mechanism (with obstructing parts 1 and 59 removed), showing the mechanism in the open position.

[0025] Figure 6 This is a front view of the high-voltage switch spring operating mechanism (excluding obstructing parts 13, 15, 14, 20, 27, 28, 29, 30, 31, and 48), showing the mechanism in the open position.

[0026] Figure 7 This is a front view of a high-voltage switch spring operating mechanism in the closed position.

[0027] Figure 8 This is a back-axis view of the high-voltage switch spring operating mechanism (with obstructing parts 1 and 59 removed), showing the mechanism in the closed position.

[0028] Figure 9 This is a front view of the high-voltage switch spring operating mechanism (excluding obstructing parts 13, 15, 14, 20, 27, 28, 29, 30, 31, and 48), showing the mechanism in the closed position.

[0029] Figure 10 This diagram illustrates the relative relationships of the energy storage shaft 57, eccentric shaft 56, drive roller 60, and concentric shaft 58 in a high-voltage switch spring operating mechanism.

[0030] In the diagram: 1-Base plate; 2-Closing trip plate; 3-Energy storage control micro switch; 4-Manual closing push rod; 5-Closing trip unit; 6-Energy storage status pointer; 7-Energy storage indicator shaft; 8-Flange; 9-Switch status indicator shaft; 10-Switch status pointer; 11-Output crank arm; 12-Transmission linkage; 13-Opening energy storage leaf spring; 14-Opening energy storage trip unit; 15-Front plate; 16-Interlocking crank arm; 17-Opening trip plate 18 (operating position diagram); 18-Opening trip plate; 19-Opening impact ball; 20-Manual 21-Manual operating handle; 22-Temperature half-shaft; 23-Manual operating shaft; 24-Lower plate; 25-Energy storage motor; 26-Fastening bolt; 27-Manual energy storage shaft; 28-Manual energy storage handle; 29-Closing energy storage leaf spring; 30-Energy storage crank arm; 31-Closing energy storage trip unit; 32-Closing half-shaft; 33-Energy storage closing trip plate; 34-Closing impact ball; 35-Energy storage closing trip plate; 33 Action diagram; 36-Closing impact ball; 34 Action diagram; 37-Main board; 38-Passive bevel gear; 39 - Drive bevel gear; 40- Lever; 41- Worm gear; 42- Return spring; 43- Worm wheel; 44- Drive crank arm; 45- Scroll spring sleeve; 46- Auxiliary switch; 47- Manual operation return spring; 48- Trip-off device; 49- Limit screw; 50- Trip-off impact ball 19 (action diagram); 51- Sealing ring; 52- Upper plate; 53- Trip-off holding stop; 54- Scroll spring; 55- Slide rail; 56- Eccentric shaft; 57- Energy storage shaft; 58- Concentric shaft; 59- Bearing; 60- Drive roller; 61- Hanging spring bushing; 62-Support shaft; 63-Control crank arm; 64-Shaft sleeve; 65-Buffer pad; 66-Closing trip unit impact rod; 67-Closing trip unit impact rod 66 operation diagram; 68-Energy storage control rod; 69-Interlocking pull rod; 70-Auxiliary switch linkage; 71-Manual tripping crank arm; 72-Closing holding stop; 73-Holding roller; 74-Limit screw; 75-Trip impact ball 19 operation diagram; 76-Closing energy storage trip unit 30 operation diagram; 77-Baffle; 78-Needle roller bearing; 79-Pawl; 80-Ratchet. Detailed Implementation

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0033] according to Figures 1-10 As shown, the present invention provides a high-voltage switch spiral spring operating mechanism, including a spiral spring 54 for storing mechanical potential energy and an energy storage shaft 57 for transmitting torque. The spiral spring 54 is mounted on the energy storage shaft 57 and drives the energy storage shaft 57 to rotate. An eccentric shaft 56 and a drive roller 60 are sequentially fixed on the energy storage shaft 57. The drive roller 60 is mounted on the eccentric shaft 56 via a bearing 78. The drive roller 60 is also located in a vertical slot of a drive crank arm 44. The rotation of the energy storage shaft 57 drives the drive roller 60 to rotate eccentrically in the same direction. This causes the drive crank arm 44 to swing left and right around the support shaft 62. The other end of the drive crank arm 44 drives the output crank arm 11 and the switch status indicator shaft 9 to swing synchronously through the transmission link 12. The other end of the energy storage shaft 57 is also fixed with an energy storage crank arm 29 that rotates synchronously with it. The two sides of the energy storage shaft 57 are respectively provided with a closing energy storage leaf spring 28 and a opening energy storage leaf spring 13. The closing energy storage leaf spring 28 and the opening energy storage leaf spring 13 are linked with the closing energy storage trip unit 30 and the opening energy storage trip unit 14 on both sides respectively.

[0034] The energy storage shaft 57 is also fixed with a control crank arm 63 that rotates synchronously with it. A closing holding stop 72 and a opening holding stop 53 are respectively provided on both sides of the energy storage shaft 57. An opening half shaft 21 and a closing half shaft 32 that block their rotation are respectively provided on one side of the closing holding stop 72 and the opening holding stop 53.

[0035] A closing trip unit 5 is provided on one side of the closing half-shaft 32, and a closing trip plate 2 is provided on one side of the closing trip unit 5. When the closing trip unit 5 is energized, it impacts the closing trip plate 2 through the closing trip unit impact rod 66, causing the closing half-shaft 32 to rotate and releasing the obstruction of the opening holding stop 53 to the control crank arm 63. A opening trip unit 48 is provided on one side of the opening half-shaft 21, and a opening trip plate 18 is provided on one side of the opening trip unit 48. The opening trip unit 48 impacts the opening trip plate 18 through the moving iron core, causing the opening half-shaft 21 to rotate and releasing the obstruction of the closing holding stop 72 to the control crank arm 63.

[0036] A closing half-shaft 32 is also fixed with an energy storage closing trip plate 33. When the closing energy storage trip device 30 is energized, it releases potential energy and impacts the energy storage closing trip plate 33 through the closing impact ball 34, causing the closing half-shaft 32 to rotate and releasing the obstruction of the opening holding stop 53 to the control crank arm 63. A opening trip plate 18 is fixed on the opening half-shaft 21. When the opening energy storage trip device 14 is energized, it releases potential energy and impacts the opening trip plate 18 through the opening impact ball 19, causing the opening half-shaft 21 to rotate and releasing the obstruction of the closing holding stop 72 to the control crank arm 63.

[0037] The end of the energy storage crank arm 29 is provided with an energy storage roller 31. When the circuit is closed or opened, one end of the closing energy storage leaf spring 28 or the opening energy storage leaf spring 13 is pushed by the energy storage roller 31 to rotate, and the other end abuts against the moving iron core of the closing energy storage trip unit 30 or the opening energy storage trip unit 14 respectively to press the spring energy storage and self-prime.

[0038] This application also includes a manual closing push rod 4, a manual operating handle 20, a manual energy storage handle 27, and a base plate 1, a front plate 15, an upper plate 52, a lower plate 23, and a main plate 37 that serve as installation supports.

[0039] A storage motor 24 is provided on one side of the spiral spring 54. When the energy storage is in place, a slider controls the energy storage control micro switch 3 through the interlocking plate to cut off the power to the storage motor 24 and control the active bevel gear 39 to separate from the passive bevel gear 38. At the same time, the interlocking plate controls the energy storage indicator shaft 7 and the energy storage status pointer 6 to move.

[0040] A buffer pad 65 and a bushing 64 are also provided between the energy storage shaft 57 and the control crank arm 63.

[0041] One end of the drive crank arm 44 is also rotatably connected to an interlocking rod 69, and the other end of the interlocking rod 69 is connected to an interlocking crank arm 16 for interlocking the tripping operation of the isolating switch.

[0042] The specific functions of each component in this invention are as follows:

[0043] (1) Base plate 1 - Installation and support function;

[0044] (2) Closing trip plate 2 - for electric closing of switch;

[0045] (3) Energy storage control micro switch 3 - used to de-energize energy storage motor 24 when energy storage is in place;

[0046] (4) Manual closing push rod 4 - for manual closing transmission;

[0047] (5) Closing trip unit 5 - for electric closing;

[0048] (6) Energy storage status pointer 6 - used to display energy storage status;

[0049] (7) Energy storage indicator shaft 7 - for pointer drive;

[0050] (8) Flange 8 - for fixed output crank arm 11;

[0051] (9) Switch status indicator shaft 9 - for driving the switch status pointer 10;

[0052] (10) Switch status pointer 10 - used to display switch status;

[0053] (11) Output crank arm 11 - for drive of the switch spindle;

[0054] (12) Transmission connecting rod 12 - for transmission;

[0055] (13) Opening energy storage leaf spring 13 - for energy storage of the opening energy storage trip unit 14;

[0056] (14) Tripping and energy storage release device 14 - for micro-power tripping and release;

[0057] (15) Front panel 15 - for fixed installation;

[0058] (16) Interlocking crank arm 16 - for use with interlocking disconnect switch;

[0059] (17) Schematic diagram of the operating position of tripping plate 18;

[0060] (18) Tripping plate 18 - for tripping;

[0061] (19) Tripping impact ball 19 - used for tripping tripping tripping plate 18;

[0062] (20) Manual operating handle 20 - for manual operation of closing and opening the circuit breaker;

[0063] (21) The half-shaft 21 of the tripping circuit breaker is used to keep the closing holding stop 72 in the closed position;

[0064] (22) Manual operation shaft 22 - for manual operation of closing and opening transmission;

[0065] (23) Lower plate 23 - for mounting supports;

[0066] (24) Energy storage motor 24 - for energy storage of the spiral spring 54;

[0067] (25) Fastening bolt 25 - used to fasten the energy storage shaft 57 and other parts;

[0068] (26) Manual energy storage shaft 26 - for manual energy storage transmission;

[0069] (27) Manual energy storage handle 27 - for manual energy storage operation;

[0070] (28) Closing energy storage leaf spring 28 - for energy storage transmission of closing energy storage trip unit 30;

[0071] (29) Energy storage crank arm 29 - for energy storage transmission of opening and closing energy storage trip unit 14 and closing energy storage trip unit 30;

[0072] (30) Closing energy storage trip unit 30 - for micro-power closing trip;

[0073] (31) Energy storage roller 31 - Energy storage release device for energy storage transmission, to reduce friction and extend service life;

[0074] (32) Closing half shaft 32 - used to keep the opening holding stop 53 in the opening position;

[0075] (33) Energy storage closing trip plate 33 - for micro-power closing trip;

[0076] (34) Closing impact ball 34 - used for impacting the energy storage closing trip plate 33 for tripping;

[0077] (35) Schematic diagram of the operation of the energy storage closing trip plate 33;

[0078] (36) Diagram of the action of closing impact ball 34;

[0079] (37) Motherboard 37 - Mounting support;

[0080] (38) Passive bevel gear 38 - for energy storage transmission;

[0081] (39) Active bevel gear 39 - for energy storage transmission;

[0082] (40) Lever 40 - Energy storage position control for disengaging passive bevel gear 38 from active bevel gear 39;

[0083] (41) Worm gear 41 - for energy storage transmission;

[0084] (42) Return spring 42 - used to pull the passive bevel gear 38 and the active bevel gear 39 out of the position when the energy storage is in place;

[0085] (43) Worm gear 43 - for energy storage transmission;

[0086] (44) Drive the crank arm 44 - convert the continuous rotational motion into left and right swinging motion;

[0087] (45) 45-for fixed installation of 54 spiral spring and transmission energy storage;

[0088] (46) Auxiliary switch 46 - converts the switch state into an electrical signal output;

[0089] (47) Manual operation return spring 47 - Used to return the handle to its original position during manual operation;

[0090] (48) Circuit breaker trip unit 48 - for electric circuit breaker tripping;

[0091] (49) Limit screw 49 - for limiting the trip plate 18;

[0092] (50) Diagram of the action of the tripping impact ball 19 50-Diagram of the action of the tripping impact ball 19 (potential energy release state);

[0093] (51) Sealing ring 51 - for sealing;

[0094] (52) Upper plate 52 - for fixed installation;

[0095] (53) The trip holding lever 53 keeps the control crank arm 63 in the trip position;

[0096] (54) Vortex spring 54 - Stores mechanical potential energy and releases it instantaneously to drive the switch to close and open quickly;

[0097] (55) Slide 55 - controls the movement of the slider and displays whether the energy storage is in place;

[0098] (56) Eccentric shaft 56 - generates axial offset, converting unidirectional rotational motion into left and right swinging motion;

[0099] (57) Energy storage shaft 57 transmits the torque of the spiral spring 54 to the eccentric shaft 56;

[0100] (58) Concentric shaft 58 - used to support eccentric shaft 56;

[0101] (59) Bearing 59 - Used for support and reducing frictional resistance;

[0102] (60) Drive roller 60 - drives drive crank arm 44 to swing, reducing wear and resistance;

[0103] (61) Hanging spring bushing 61 - used to fix the transmission torque of the spiral spring 54;

[0104] (62) Support shaft 62 - Support drive crank arm 44 swings left and right around the axis;

[0105] (63) The control crank arm 63 and the control energy storage shaft 57 are used to maintain the closed position and the open position respectively;

[0106] (64) Bushing 64 - for transmission;

[0107] (65) Buffer pad 65 - located between control crank arm 63 and bushing 64, plays a buffering role to avoid damage to parts by hard connection;

[0108] (66) Closing trip impact rod 66 - for electric closing trip impact;

[0109] (67) Schematic diagram of the action of closing trip unit impact rod 66.

[0110] (68) Energy storage control lever 68 - used to pull the passive bevel gear 38 and the active bevel gear 39 to engage when no energy is stored, and to separate them when energy storage is completed;

[0111] (69) Interlocking lever 69 - Control interlocking crank arm 16, which locks the disconnecting switch opening operation when the switch is closed;

[0112] (70) Auxiliary switch linkage 70 - drives auxiliary switch 46 to operate;

[0113] (71) Manual tripping crank arm 71 - When manually tripping, it drives the tripping release plate 18 to rotate counterclockwise for tripping;

[0114] (72) The closing holding lever 72 keeps the control crank arm 63 in the closed position;

[0115] (73) Keep roller 73 - reduce wear between control crank arm 63 and closing holding stop 72 and opening holding stop 53, reduce resistance and extend service life;

[0116] (74) Limit screw 74 - used to limit the energy storage closing trip plate 33;

[0117] (75) Schematic diagram of the action of the tripping impact ball 19 75-Schematic diagram of the action of the tripping impact ball 19 (stored potential energy state);

[0118] (76) Operation position diagram 76-Diagram of the position of the closing energy storage trip unit 30 before operation;

[0119] (77) Baffle 77 - used to prevent axial movement of drive roller 60;

[0120] (78) Needle roller bearing 78 - Used to reduce frictional resistance;

[0121] (79) Pawl 79 - Prevents the worm 41 from rotating in the opposite direction due to the drive of the worm wheel 43;

[0122] (80) Ratchet 80 - Prevents the worm 41 from rotating in the opposite direction due to the drive of the worm wheel 43.

[0123] The following is in conjunction with the appendix Figure 1 ~Attached Figure 10 The present invention will be further described in detail with reference to specific embodiments:

[0124] 1. Key structural features of the present invention:

[0125] First, weld (or otherwise fix) the eccentric shaft 56 to the concentric shaft 58 together. Then, connect the square hole of the eccentric shaft 56 to the square shaft of the energy storage shaft 57. Next, mount the drive roller 60 onto the eccentric shaft 56 via the needle roller bearing 78, and place the retaining plates 77 and retaining rings on both sides (see attached diagram). Figure 10 The drive roller 60 is located at the center of the groove of the drive crank arm 44, which can release the torque of the coil spring 54 through the continuous rotation of the energy storage shaft 57, the eccentric shaft 56 and the drive roller 60 in the same direction, and convert it into the left and right swing of the drive crank arm 44. The structure is simple and the transmission efficiency is high.

[0126] Taking advantage of the synchronous rotation of the energy storage crank arm 29 and the energy storage shaft 57, and the fact that the closing and opening positions must be maintained for a period of time, the opening energy storage leaf spring 13 and the closing energy storage leaf spring 28 respectively press the compression springs on the moving iron core of the opening energy storage trip unit 14 and the closing energy storage trip unit 30 for a short time to store energy. This ensures that the permanent magnet can reliably hold the moving iron core, and ensures that the closing energy storage trip unit 30 can be successfully energized every time the circuit is closed, and the opening energy storage trip unit 14 can be successfully energized every time the circuit is opened.

[0127] 2. Switch closing and opening process:

[0128] When the coil spring 54 leaves the factory, it is pre-stored with a portion of potential energy. When it is put into operation, it stores energy again by 1.5 turns (counterclockwise in the front view) to complete the energy storage.

[0129] After energy storage is completed, the control lever 63, under the obstruction of the trip holding stop 53, prevents the energy storage shaft 57 from rotating (counterclockwise) and keeps it in the tripped position (see appendix). Figure 6 );

[0130] When the coil of the closing trip unit 5 is energized, the closing trip unit 5's impact rod 66 moves outward (see...). Figure 5 The action shown in item 67 of the middle section) strikes the closing trip plate 2, causing the closing half shaft 32 to rotate counterclockwise (to... Figure 6 (Based on the view) Release the control of the trip holding stop 53 on the control crank arm 63, and the energy storage shaft 57 will drive the eccentric shaft 56 and the drive roller 60 to rotate counterclockwise (slightly greater than 180°) (see appendix). Figure 6 The control crank arm 63 stops rotating and remains in the closed position until it is blocked by the closing holding stop 72 (see appendix). Figure 9 );

[0131] If the closing energy storage trip unit 30 is energized, the moving iron core will no longer be attracted by the permanent magnet and will pop out downwards under the action of the spring (see appendix). Figure 1The closing impact ball 34 strikes the energy-storing closing trip plate 33, causing the closing half-shaft 32 to rotate counterclockwise. This releases the control of the opening holding stop 53 on the control crank arm 63. Under the action of the potential energy stored in the vortex spring 54, the energy storage shaft 57 rotates counterclockwise (slightly more than 180°) until the control crank arm 63 is blocked by the closing holding stop 72, stopping its rotation and maintaining it in the closed position (see appendix). Figure 9 );

[0132] After the above-mentioned closing process begins, the energy storage crank arm 29 rotates synchronously with the energy storage shaft 57, and the energy storage roller 31 installed on it rotates synchronously to a certain angle and then presses directly onto the closing energy storage leaf spring 28 (see appendix). Figure 7 On the other side of the closing energy storage leaf spring 28, the moving iron core of the closing energy storage trip unit 30 is pressed against the spring, returning it to the energy storage position (see appendix). Figure 7 The spring potential energy released during closing is stored again for use in the next closing operation.

[0133] After the aforementioned closing begins, the eccentric shaft 56 and drive roller 60 driven by the energy storage shaft 57 rotate synchronously (forward and counterclockwise). The drive roller 60 is located in the middle of the groove of the drive crank arm 44. As the drive roller 60 rotates eccentrically, the drive crank arm 44 is driven to swing left and right around the support shaft 62. When the swing reaches its maximum amplitude (see appendix)... Figure 8 The control crank arm 63 is held in the closed position by the switch closing holding stop 72 (see appendix). Figure 9 When the drive crank arm 44 stops swinging, the drive crank arm 44 also drives the output crank arm 11 to the closing position through the transmission link 12. At the same time, the switch also reaches the closing position, completing one closing operation.

[0134] During the closing holding process, if the trip release 48 or the trip storage release 14 is energized, the trip release plate 18 will also be driven to rotate counterclockwise (see appendix). Figure 7 Then, the tripping half-shaft 21 rotates counterclockwise, releasing the control of the switch closing holding lever 72 on the control crank arm 63. The potential energy stored in the vortex spring 54 is released through the energy storage shaft 57, which then rotates counterclockwise again (see appendix). Figure 9 (Slightly less than 180°, the sum of which with the closing angle is 360°), the control crank arm 63 is again blocked by the opening holding stop 53, and no longer rotates, remaining in the opening position (see appendix). Figure 6 At the same time, the eccentric shaft 56 and the drive roller 60 rotate synchronously with the energy storage shaft 57. The moment when the energy storage shaft 57 is restricted to stop rotating by the control crank arm 63 is exactly when the drive crank arm 44 swings to its maximum value (see appendix). Figure 5 The switch had just reached the open position, completing one opening operation.

[0135] During the previous tripping process, once the tripping process begins, the energy storage crank arm 29 rotates synchronously with the energy storage shaft 57, and the energy storage roller 31 mounted on it directly presses against the tripping energy storage leaf spring 13 (see appendix). Figure 1 The moving iron core of the trip unit 14 is pressed back to the energy storage position, storing the spring potential energy released during tripping for use in the next tripping.

[0136] 3. Interlocking relationship between the switch and the disconnecting switch

[0137] The switch and the disconnecting switch are mechanically interlocked as follows: the disconnecting switch is only allowed to open when the switch is in the open position. When the switch is in the closed position, the interlocking crank arm 16 rotates counterclockwise to a certain angle under the action of the interlocking lever 69 (see attached diagram for rear view). Figure 8 This prevents the disconnector switch from tripping erroneously.

[0138] This invention provides a simple spiral spring operating mechanism, which features simple structure, low cost, low power consumption during closing and opening, short closing and opening time, small range of closing and opening time variation, and reliable and stable energy storage of the energy storage trip unit.

[0139] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the above embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0140] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for 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 can be understood by those skilled in the art.

Claims

1. A high-voltage switch spiral spring operating mechanism, characterized in that: The device includes a spiral spring (54) for storing mechanical potential energy and an energy storage shaft (57) for transmitting torque. The spiral spring (54) is mounted on the energy storage shaft (57) and drives the energy storage shaft (57) to rotate. An eccentric shaft (56) and a drive roller (60) are fixed sequentially on the energy storage shaft (57). The drive roller (60) is mounted on the eccentric shaft (56) and is also located in a vertical slot of a drive crank arm (44). The rotation of the energy storage shaft (57) causes the drive roller (60) to rotate eccentrically in the same direction, thereby causing the drive crank arm (44) to rotate around the support. The support shaft (62) swings left and right. The other end of the drive crank arm (44) drives the output crank arm (11) and the switch status indicator shaft (9) to swing synchronously through the transmission link (12). The other end of the energy storage shaft (57) is also fixed with an energy storage crank arm (29) that rotates synchronously with it. The two sides of the energy storage shaft (57) are respectively provided with a closing energy storage leaf spring (28) and a opening energy storage leaf spring (13). The closing energy storage leaf spring (28) and the opening energy storage leaf spring (13) are linked with the closing energy storage trip unit (30) and the opening energy storage trip unit (14) on both sides respectively.

2. The high-voltage switch spring operating mechanism according to claim 1, characterized in that: The energy storage shaft (57) is also fixed with a control crank arm (63) that rotates synchronously with it. A closing holding stop (72) and a opening holding stop (53) are respectively provided on both sides of the energy storage shaft (57). An opening half shaft (21) and a closing half shaft (32) that block the rotation of the closing holding stop (72) and the opening holding stop (53) are respectively provided on one side.

3. The high-voltage switch spring operating mechanism according to claim 2, characterized in that: A closing trip unit (5) is provided on one side of the closing half shaft (32), and a closing trip plate (2) is provided on one side of the closing trip unit (5). When the closing trip unit (5) is energized, it impacts the closing trip plate (2) through the closing trip unit impact rod (66), thereby driving the closing half shaft (32) to rotate and releasing the obstruction of the opening holding stop (53) to the control crank arm (63). A opening trip unit (48) is provided on one side of the opening half shaft (21), and a opening trip plate (18) is provided on one side of the opening trip unit (48). The opening trip unit (48) impacts the opening trip plate (18) through the moving iron core, thereby driving the opening half shaft (21) to rotate and releasing the obstruction of the closing holding stop (72) to the control crank arm (63).

4. The high-voltage switch spring operating mechanism according to claim 2, characterized in that: A closing half-shaft (32) is also fixed with an energy storage closing trip plate (33). When the closing energy storage trip device (30) is energized, it releases potential energy and impacts the energy storage closing trip plate (33) through the closing impact ball (34), causing the closing half-shaft (32) to rotate and releasing the obstruction of the opening holding stop (53) to the control crank arm (63). A opening trip plate (18) is fixed on the opening half-shaft (21). When the opening energy storage trip device (14) is energized, it releases potential energy and impacts the opening trip plate (18) through the opening impact ball (19), causing the opening half-shaft (21) to rotate and releasing the obstruction of the closing holding stop (72) to the control crank arm (63).

5. The high-voltage switch spring operating mechanism according to claim 1, characterized in that: The end of the energy storage crank arm (29) is provided with an energy storage roller (31). When the circuit is closed or opened, one end of the closing energy storage leaf spring (28) or the opening energy storage leaf spring (13) is pushed by the energy storage roller (31) and rotates. The other end abuts against the moving iron core of the closing energy storage trip unit (30) or the opening energy storage trip unit (14) respectively to press the spring to store energy and retain it by self-priming.

6. The high-voltage switch spring operating mechanism according to claim 1, characterized in that: It also includes a manual closing push rod (4), a manual operating handle (20), a manual energy storage handle (27), and a base plate (1), a front plate (15), an upper plate (52), a lower plate (23), and a main plate (37) that serve as installation supports.

7. The high-voltage switch spring operating mechanism according to claim 1, characterized in that: A storage motor (24) is provided on one side of the spiral spring (54). When the energy storage is in place, a slider controls the energy storage control micro switch (3) through the interlocking plate to cut off the power to the energy storage motor (24) and control the active bevel gear (39) and the passive bevel gear (38) to separate. At the same time, the interlocking plate controls the energy storage indicator shaft (7) and the energy storage status pointer (6) to move.

8. The high-voltage switch spring operating mechanism according to claim 1, characterized in that: A buffer pad (65) and a bushing (64) are also provided between the energy storage shaft (57) and the control crank arm (63).

9. A high-voltage switch spring operating mechanism according to claim 1, characterized in that: One end of the drive crank arm (44) is also rotatably connected to an interlocking rod (69), and the other end of the interlocking rod (69) is connected to an interlocking crank arm (16) for interlocking the opening operation of the isolating switch.

Images