Ultra-thin electric three-station operating device and electric three-station operating system

Abstract

The invention relates to the field of switch cabinets, and discloses an ultra-thin electric three-station operating device and an electric three-station operating system.The ultra-thin electric three-station operating device comprises a shell, an electric control module, an energy storage mechanism and an electric driving mechanism, and the electric control module comprises an electric locking assembly and a signal collecting assembly; independent operation of closing and grounding is realized through the electric locking assembly, and the electric driving mechanism and the energy storage mechanism control the signal acquisition assembly to switch the isolation circuit, the closing circuit and the grounding circuit. Compared with the prior art, the electric control module is adopted to control the operating device to achieve station switching, the functions of remote control and automatic operation are achieved, meanwhile, the number of overall parts is smaller, the structure is compact, the size is small, and the production cost is low; the method has the advantages of flexibility, rapidness, manpower saving, stability and reliability.

Description

Technical Field

[0001] The invention relates to the field of switch cabinets, and in particular to an ultra-thin electric three-position operating device and an electric three-position operating system. Background Art

[0002] The operating mechanism of the isolating switch or earthing switch of the existing medium-voltage switchgear is usually an integrated operating mechanism and the switchgear, or the isolating switch operating mechanism and the earthing switch operating mechanism are separated into two or three-position mechanisms, that is, the isolating switch operation and the earthing switch operation are combined into one operating mechanism. This three-position mechanism is provided with two operating shafts, namely the isolating switch operating shaft and the earthing switch operating shaft, and the internal transmission components are also correspondingly provided with two groups, which are divided into the isolating switch operating connecting rod assembly and the earthing switch operating connecting rod assembly. Therefore, the existing three-position mechanism has a large number of parts, a large size, a complex structure, a high cost, and cumbersome operation.

[0003] According to the above, the switch operating mechanism of the existing medium voltage switchgear needs to be further improved. Summary of the invention

[0004] The first purpose of the present invention is to overcome the shortcomings of the existing medium-voltage switch cabinet switch operating mechanism, such as the large number of parts, large size, complex structure, high cost and cumbersome operation, and to provide an ultra-thin electric three-position operating device, including an electric control module, an energy storage mechanism and an electric drive mechanism, with a relatively small number of parts, relatively low cost, compact structure, small size and simple operation.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an ultra-thin electric three-position operating device, comprising a shell, the shell comprising a mechanism bottom plate and a mechanism front plate; an electric control module, the electric control module comprising an electric locking component and a signal acquisition component, the electric locking component is arranged on the mechanism front plate, and includes a first switch; the signal acquisition component includes a second switch, a third switch and a fourth switch, and is coupled with the electric locking component to form a grounding circuit, an isolation circuit and a closing circuit; an energy storage mechanism, the energy storage mechanism includes an elastic energy storage rod, a locking structure, an unlocking structure and a signal trigger plate, the elastic energy storage The rod is arranged on the bottom plate of the mechanism, the locking structure is used to lock the elastic energy storage rod, and the unlocking structure and the signal triggering plate are rotatably arranged on the elastic energy storage rod; the electric drive mechanism is arranged on the bottom plate of the mechanism and is transmission-connected with the energy storage mechanism; when the electric drive mechanism drives the elastic energy storage rod to store energy, the unlocking structure rotates with the elastic energy storage rod and triggers the locking structure to release the kinetic energy of the elastic energy storage rod, and the signal triggering plate rotates with the release of the kinetic energy of the elastic energy storage rod, thereby pressing the second switch or the third switch or the fourth switch to realize the switching between the grounding circuit, the isolation circuit and the closing circuit.

[0006] Compared with the prior art, the ultra-thin electric three-position operating device of the present invention has the following beneficial effects:

[0007] (1) The isolation operation, closing operation and grounding operation of the present invention are all controlled by the electric control module, thereby reducing the number of parts, simplifying the internal structure, improving the compactness of the structure, reducing the size of the mechanism, and reducing the production cost, making the present invention suitable for medium-voltage switchgear such as normal-pressure sealed air-insulated switchgear;

[0008] (2) In the electric control module of the present invention, the normally open and normally closed contacts of the first switch in the electric locking assembly are used to switch the operating device between the closing circuit and the grounding circuit, respectively realizing independent closing and grounding operations. Then, the normally open and normally closed contact combination of the third and fourth switches in the signal acquisition assembly is used to switch the operating device between the closing circuit and the isolation circuit, or the normally open and normally closed contact combination of the second and third switches in the signal acquisition assembly is used to switch the operating device between the grounding circuit and the isolation circuit. This has the advantages of being flexible, fast, labor-saving, stable and reliable.

[0009] Preferably, the elastic energy storage rod includes a transmission part, an energy storage part and a connecting shaft, the connecting shaft is arranged on the bottom plate of the mechanism, the transmission part and the energy storage part are respectively arranged on the connecting shaft, the transmission part and the energy storage part can be relatively twisted and generate elastic potential energy, and the transmission part is transmission-connected to the electric drive mechanism; the locking structure includes a locking plate and a locking latch, the locking plate is arranged on the energy storage part, the locking latch is arranged on the bottom plate of the mechanism, the locking latch abuts against the locking plate to lock the energy storage part; the unlocking structure is arranged to rotate with the transmission part and when it rotates to the first position, the unlocking structure pushes the locking latch to release the elastic potential energy of the energy storage part; the signal trigger plate is connected to the locking plate, so as to realize switching between the grounding circuit, the isolation circuit and the closing circuit.

[0010] The energy storage part of the elastic energy storage rod continuously stores energy through the elastic potential energy generated by the relative torsion with the transmission part, and rotates as the elastic potential energy is released after being unlocked, and then the locking plate arranged on the energy storage part rotates to the next work position accordingly, so that the signal trigger plate connected to the locking plate is accurately rotated to press the next switch, and the locking latch locks the locking plate after the locking plate is rotated into place, thereby limiting the rotation range of the signal trigger plate. This control method makes the circuit connection more accurate.

[0011] Preferably, the unlocking structure includes an unlocking plate, which is symmetrically provided with a trigger part for pushing the locking latch to unlock the locking plate; the locking latch includes an elastic reset part and a locking part, the locking part is provided with a locking end, the locking end is provided with a locking part corresponding to the locking plate, and the locking end is provided with an unlocking part corresponding to the unlocking plate, the elastic reset part is used to reset the locking end toward the axial direction of the locking plate; the locking plate is provided with a V-shaped part for the locking latch to lock.

[0012] The unlocking plate rotates to the energy storage completion position along with the elastic energy storage rod, and the unlocking part of the locking latch pushes the locking end to rotate in the direction away from the axis of the locking plate, and the locking part rotates accordingly, that is, the locking part disengages from the V-shaped part, and the locking plate is immediately unlocked and rotates in the rotation direction of the elastic energy storage rod. At the same time, the locking end of the locking latch is reset toward the axis of the locking plate until the locking part is pressed against the V-shaped part, and the locking plate is immediately locked.

[0013] Preferably, the electric locking assembly includes a first pushing structure, a second pushing structure and a rocker structure, the first pushing structure and the second pushing structure are arranged opposite to each other, and the rocker structure is arranged between the first pushing structure and the second pushing structure, and the first pushing structure and the second pushing structure are moved to make the rocker structure swing and press the first switch to switch the normally closed and normally open contacts of the first switch.

[0014] Preferably, the rocker structure includes a locking bracket, a rocker and a limit plate, one end of the rocker is rotatably set on the locking bracket through a connecting pillar fixedly set on the locking bracket, and a cylindrical pin is welded on the other end, and a waist-shaped hole is provided on the side of the limit plate close to the rocker, and the cylindrical pin is slidably set in the waist-shaped hole, and a flange portion for pressing the first switch to switch the first switch to a normally open contact is provided on the side of the limit plate close to the first switch, and the flange portion and the outer side of the limit plate form a concave arc portion, and the concave arc portion is used to press the first switch to switch the first switch to a normally closed contact.

[0015] The first pushing structure pushes the rocker upward, and the rocker rotates counterclockwise and drives the limit plate to rotate clockwise to the flange part to press the first switch through the sliding of the cylindrical pin in the waist-shaped hole, so that the first switch is switched to the normally open contact, and the three-position operating device enters the closing operation shaft; the second pushing structure pushes the rocker downward, and the rocker rotates clockwise and drives the limit plate to rotate counterclockwise to the concave arc part to press the first switch through the sliding of the cylindrical pin in the waist-shaped hole, so that the first switch is switched to the normally closed contact, and the three-position operating device enters the grounding operation shaft.

[0016] Preferably, the closing circuit includes: a normally open contact of a third switch and a normally closed contact of a fourth switch connected in series; the isolation circuit includes a first isolation circuit and a second isolation circuit; the first isolation circuit includes: a normally closed contact of the third switch and a normally open contact of the fourth switch connected in series; the second isolation circuit includes: a normally closed contact of the third switch and a normally open contact of the second switch connected in series; the grounding circuit includes: a normally open contact of the third switch and a normally closed contact of the second switch connected in series; the closing circuit is connected in parallel with the first isolation circuit and then connected to the normally open contact of the first switch, and the grounding circuit is connected in parallel with the second isolation circuit and then connected to the normally closed contact of the first switch.

[0017] Different circuits are formed by combining the four switches in different contact states, which can reduce the number of components as much as possible while ensuring the realization of functions, so that the three-station operating device has a simple structure and a small size.

[0018] Preferably, a connecting part is provided on the signal trigger plate, and the signal trigger plate rotates with the locking plate so that the connecting part rotates from being connected in series with the third switch to being connected in series with the fourth switch, and the electric control module switches from the first isolation circuit to the closing circuit; the signal trigger plate rotates with the locking plate so that the connecting part rotates from being connected in series with the fourth switch to being connected in series with the third switch, and the electric control module switches from the closing circuit to the first isolation circuit; the signal trigger plate rotates with the locking plate so that the connecting part rotates from being connected in series with the third switch to being connected in series with the second switch, and the electric control module switches from the second isolation circuit to the grounding circuit; the signal trigger plate rotates with the locking plate so that the connecting part rotates from being connected in series with the second switch to being connected in series with the third switch, and the electric control module switches from the grounding circuit to the second isolation circuit.

[0019] Preferably, when the ultra-thin electric three-position operating device switches from the first isolation circuit to the closing circuit, after the locking plate rotates clockwise to a predetermined position, the locking latches located at the upper right and lower right of the locking plate lock the locking plate; when the ultra-thin electric three-position operating device switches from the closing circuit to the first isolation circuit, after the locking plate rotates counterclockwise to a predetermined position, the locking latches located at the upper left and lower left of the locking plate lock the locking plate; when the ultra-thin electric three-position operating device switches from the second isolation circuit to the grounding circuit, after the locking plate rotates counterclockwise to a predetermined position, the locking latches located at the upper right and lower right of the locking plate lock the locking plate; when the ultra-thin electric three-position operating device switches from the grounding circuit to the second isolation circuit, after the locking plate rotates clockwise to a predetermined position, the locking latches located at the upper left and lower left of the locking plate lock the locking plate.

[0020] Preferably, the electric drive mechanism includes a drive motor and a transmission assembly, the drive motor is transmission-connected to the energy storage mechanism via the transmission assembly, and the transmission assembly is configured as a plurality of gear sets, including a first gear sleeved on the elastic energy storage rod and connected to its transmission portion.

[0021] Preferably, the gear sets are provided in four sets, and the gear sets are connected by gear shafts.

[0022] Another object of the present invention is to provide an electric three-position operating system, comprising a controller and the electric three-position operating device of the above scheme, wherein the controller is electrically connected to the electric three-position operating device, and the controller comprises a main switch, an electric locking circuit and a starting circuit, wherein the main switch is used to close and start the electric three-position operating device; the electric locking circuit comprises a fifth switch, a first push-up structure and a second push-up structure are connected in parallel, the other end of the first push-up structure is connected to the first contact of the fifth switch, the other end of the second push-up structure is connected to the second contact of the fifth switch, and the common end of the fifth switch can selectively connect the first contact or the second contact. contacts; the starting circuit includes a first relay, a second relay, a sixth switch and a seventh switch, the first relay is connected in parallel with the closing circuit and the first isolation circuit, and the normally open contact of the first relay is connected in series with the closing circuit, and the normally closed contact of the first relay is connected in series with the grounding circuit; the second relay is connected in parallel with the grounding circuit and the second isolation circuit, and the normally open contact of the second relay is connected in series with the second isolation circuit, and the normally closed contact of the second relay is connected in series with the first isolation circuit; the sixth switch is used to selectively turn on the closing circuit or the first isolation circuit, and the seventh switch is used to selectively turn on the grounding circuit or the second isolation circuit.

[0023] Compared with the prior art, the electric three-position operating system of the present invention has a relatively small number of parts and components, a relatively low cost, a compact structure, a small size, and simple operation because it applies the above solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 .

[0025] Figure 2 The structure of the present invention is schematically shown in FIG. Figure 2 .

[0026] Figure 3 It is a schematic diagram of the shielding plate of the present invention being rotated to expose the first operating axis.

[0027] Figure 4 It is a schematic diagram of the shielding plate of the present invention being rotated to expose the second operating axis.

[0028] Figure 5It is a structural schematic diagram of the electric locking assembly of the present invention.

[0029] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0030] Figure 7 It is a schematic diagram of the first switch of the present invention connecting normally open contacts.

[0031] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0032] Fig. 9 It is a schematic diagram of the first switch of the present invention connecting the normally closed contacts.

[0033] Fig.10 It is a structural exploded view of the elastic energy storage rod, the signal trigger plate and the locking plate of the present invention.

[0034] Fig.11 It is a structural schematic diagram of the elastic energy storage rod, the unlocking plate, the first gear, the signal triggering plate and the locking plate of the present invention.

[0035] Fig.12 It is another structural schematic diagram of the elastic energy storage rod, the unlocking plate, the first gear, the signal triggering plate and the locking plate of the present invention.

[0036] Fig.13 Schematic diagram of the unlocking plate of the present invention in the first position.

[0037] Fig.14 It is a schematic structural diagram of the unlocking plate and the locking structure of the present invention.

[0038] Fig.15 yes Fig.14 Enlarged view of point C in the middle.

[0039] Fig.16 It is a schematic diagram of the locking structure in the isolated state of the present invention.

[0040] Fig.17 yes Fig.16 Enlarged view of point D in the middle.

[0041] Fig.18 It is a schematic diagram of the state of the locking structure of the present invention in the grounded state.

[0042] Fig.19 It is a schematic diagram of the state of the locking structure in the closed state of the present invention.

[0043] Fig. 20 It is another schematic diagram of the locking structure in the isolated state of the present invention.

[0044] Fig.21 yes Fig. 20 Enlarged view of point E in the middle.

[0045] Fig. 22 It is a structural exploded view of the locking latch of the present invention.

[0046] Fig.23 It is a schematic diagram of the signal trigger board and the signal acquisition component of the present invention in an isolated state.

[0047] Fig.24 It is a schematic diagram of the signal trigger board and the signal acquisition component of the present invention in the closed state.

[0048] Fig.25 It is a schematic diagram of the signal trigger board and the signal acquisition component of the present invention in a grounded state.

[0049] Fig.26 It is a structural schematic diagram of the electric drive mechanism of the present invention.

[0050] Fig. 27 is another schematic diagram of the electric drive mechanism of the present invention.

[0051] Fig.28 It is a circuit diagram of the present invention.

[0052] Description of reference numerals: An ultra-thin electric three-position operating device 1, housing 2, mechanism bottom plate 21, mechanism front plate 22, electric control module 3, grounding circuit 31, isolation circuit 32, first isolation circuit 321, second isolation circuit 322, closing circuit 33, electric locking assembly 4, first switch 41, first push-up structure 42, first push rod 421, second push-up structure 43, second push rod 431, rocker structure 44, locking bracket 441, rocker 442, limit Positioning plate 443, waist-shaped hole 4431, flange portion 4432, concave arc portion 4433, connecting pillar 444, cylindrical pin 445, signal acquisition component 5, second switch 51, third switch 52, fourth switch 53, energy storage mechanism 6, elastic energy storage rod 61, transmission portion 611, energy storage portion 612, connecting shaft 613, locking structure 62, locking plate 621, V-shaped portion 6211, locking latch 622, elastic reset member 6221, locking member 6222, lock Fixed end 6223, locking part 6224, unlocking part 6225, unlocking structure 63, unlocking plate 631, triggering part 6311, signal triggering plate 64, connecting part 641, electric drive mechanism 7, drive motor 71, transmission assembly 72, first gear 721, second gear 722, first operating shaft 723, first operating hole 7231, second operating shaft 724, second operating hole 7241, first position 8, controller 9, main switch 10, electric locking circuit 11, fifth switch 111, first contact 1111, second contact 1112, starting circuit 12, first relay 121, first relay normally open contact 1211, first relay normally closed contact 1212, second relay 122, second relay normally open contact 1221, second relay normally closed contact 1222, sixth switch 123, seventh switch 124, perforated plate 13, first blocking portion 131, second blocking portion 132, operating knob 133. DETAILED DESCRIPTION

[0053] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by “up”, “down”, “left”, “right”, “horizontal”, “inside”, “outside”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Embodiment 1

[0054] See also Figures 1 to 27An ultra-thin electric three-position operating device 1 includes a housing 2, wherein the housing 2 includes a mechanism bottom plate 21 and a mechanism front plate 22; an electric control module 3, wherein the electric control module 3 includes an electric locking component 4 and a signal acquisition component 5, wherein the electric locking component 4 is arranged on the mechanism front plate 22, and includes a first switch 41; the signal acquisition component 5 includes a second switch 51, a third switch 52 and a fourth switch 53, and is coupled with the electric locking component 4 to form a grounding circuit 31, an isolation circuit 32 and a closing circuit 33; an energy storage mechanism 6, wherein the energy storage mechanism 6 includes an elastic energy storage rod 61, a locking structure 62, an unlocking structure 63 and a signal trigger plate 64, wherein the elastic energy storage rod 61 is arranged on the mechanism bottom plate 21 , the locking structure 62 is used to lock the elastic energy storage rod 61, and the unlocking structure 63 and the signal triggering plate 64 are rotatably arranged on the elastic energy storage rod 61; the electric drive mechanism 7, the electric drive mechanism 7 is arranged on the mechanism bottom plate 21 and is transmission-connected with the energy storage mechanism 6; when the electric drive mechanism 7 drives the elastic energy storage rod 61 to store energy, the unlocking structure 63 rotates with the elastic energy storage rod 61 and triggers the locking structure 62 to release the kinetic energy of the elastic energy storage rod 61, and the signal triggering plate 64 rotates with the elastic energy storage rod 61 releasing the kinetic energy, thereby pressing the second switch 51 or the third switch 52 or the fourth switch 53 to realize the switching between the grounding circuit 31, the isolation circuit 32 and the closing circuit 33.

[0055] See also Figures 10 to 21 The elastic energy storage rod 61 includes a transmission part 611, an energy storage part 612 and a connecting shaft 613, wherein the connecting shaft 613 is arranged on the mechanism bottom plate 21, and the transmission part 611 and the energy storage part 612 are respectively arranged on the connecting shaft 613, and the transmission part 611 and the energy storage part 612 can be relatively twisted and generate elastic potential energy, and the transmission part 611 is connected to the electric drive mechanism 7 in transmission; the locking structure 62 includes a locking plate 621 and a locking latch 622, and the locking plate 621 is arranged on the energy storage The locking latch 622 is arranged on the bottom plate 21 of the mechanism, and the locking latch 622 abuts against the locking plate 621 to lock the energy storage part 612; the unlocking structure 63 is arranged to rotate with the transmission part 611 and when it rotates to the first position 8, the unlocking structure 63 pushes the locking latch 622 to release the elastic potential energy of the energy storage part 612; the signal trigger plate 64 is connected to the locking plate 621, so as to realize the switching between the grounding circuit 31, the isolation circuit 32 and the closing circuit 33.

[0056] See also Figure 11 to Figure 12After the electric drive mechanism 7 is started, the transmission part rotates with the electric drive mechanism 7, while the energy storage part 612 does not rotate, so that the transmission part 611 and the energy storage part 612 form relative torsion, and the energy storage part 612 generates elastic potential energy and continues to store energy until the unlocking structure 63 unlocks the locking plate 621, so that the locking plate 621 drives the signal trigger plate 64 to switch to the corresponding circuit.

[0057] See also Figures 14 to 22 The unlocking structure 63 includes an unlocking plate 631, and the unlocking plate 631 is symmetrically provided with a trigger part 6311 for pushing the locking latch 622 to unlock the locking plate 621; the locking latch 622 includes an elastic reset member 6221 and a locking member 6222, the locking member 6222 is provided with a locking end 6223, the locking end 6223 is provided with a locking part 6224 corresponding to the locking plate 621, and the locking end 6223 is provided with an unlocking part 6225 corresponding to the unlocking plate 631, the elastic reset member 6221 is used to reset the locking end 6223 toward the axial direction of the locking plate 621; the locking plate 621 is provided with a V-shaped part 6211 for the locking latch 622 to lock.

[0058] See also Figures 14 to 22 Specifically, the V-shaped portion 6211 is arranged at the four corners of the locking plate 621, the locking portion 6224 is set to a V shape corresponding to the V-shaped portion 6211, the trigger portion 6311 is set to a fan shape, the unlocking portion 6225 is arranged on the locking portion 6224, and the unlocking portion 6225 is set to a semicircular arc surface.

[0059] See also Figures 5 to 9 The electric locking assembly 4 includes a first pushing structure 42, a second pushing structure 43 and a rocker structure 44. The first pushing structure 42 and the second pushing structure 43 are arranged opposite to each other, and the rocker structure 44 is arranged between the first pushing structure 42 and the second pushing structure 43. The first pushing structure 42 and the second pushing structure 43 act to make the rocker structure 44 swing and press the first switch 41, thereby switching the normally closed and normally open contacts of the first switch 41.

[0060] See also Figures 5 to 9 The first pushing structure 42 is provided with a first push rod 421, and the second pushing structure 43 is provided with a second push rod 431. The first push rod 421 pushes the rocker structure 44 upward so that the rocker structure 44 presses against the normally open contact of the first switch 41; the second push rod 431 pushes the rocker structure 44 downward so that the rocker structure 44 presses against the normally closed contact of the first switch 41.

[0061] See also Figures 5 to 9The rocker structure 44 includes a locking bracket 441, a rocker 442 and a limit plate 443. One end of the rocker 442 is rotatably set on the locking bracket 441 through a connecting pillar 444 fixedly set on the locking bracket 441, and a cylindrical pin 445 is welded on the other end. A waist-shaped hole 4431 is provided on the side of the limit plate 443 close to the rocker 442, and the cylindrical pin 445 is slidably set in the waist-shaped hole 4431. A flange portion 4432 for pressing the first switch 41 to switch the first switch 41 to a normally open contact is provided on the side of the limit plate 443 close to the first switch 41. The flange portion 4432 and the outer side of the limit plate 443 form a concave arc portion 4433, and the concave arc portion 4433 is used to press the first switch 41 to switch the first switch 41 to a normally closed contact.

[0062] See also Figures 5 to 9 Specifically, the first push rod 421 pushes the rocker 442 upward, the rocker 442 rotates counterclockwise and drives the limit plate 443 to rotate clockwise until the flange portion 4432 presses the first switch 41 through the sliding of the cylindrical pin 445 in the waist-shaped hole 4431, so that the first switch 41 is switched to a normally open contact, and the three-position operating device 1 enters the closing operation axis; the second push rod 431 pushes the rocker 442 downward, the rocker 442 rotates clockwise and drives the limit plate 443 to rotate counterclockwise until the concave arc portion 4433 presses the first switch 41 through the sliding of the cylindrical pin 445 in the waist-shaped hole 4431, so that the first switch 41 is switched to a normally closed contact, and the three-position operating device 1 enters the grounding operation axis.

[0063] See also Fig.28 , the closing circuit 33 includes: the normally open contact of the third switch 52 and the normally closed contact of the fourth switch 53 are connected in series; the isolation circuit 32 includes a first isolation circuit 321 and a second isolation circuit 322; the first isolation circuit 321 includes: the normally closed contact of the third switch 52 and the normally open contact of the fourth switch 53 are connected in series; the second isolation circuit 322 includes: the normally closed contact of the third switch 52 and the normally open contact of the second switch 51 are connected in series; the grounding circuit 31 includes: the normally open contact of the third switch 52 and the normally closed contact of the second switch 51 are connected in series; the closing circuit 33 is connected in parallel with the first isolation circuit 321 and then connected to the normally open contact of the first switch 41, and the grounding circuit 31 is connected in parallel with the second isolation circuit 322 and then connected to the normally closed contact of the first switch 41.

[0064] See also Figure 23 to Figure 25The signal trigger plate 64 is provided with a connecting portion 641, and the signal trigger plate 64 rotates with the locking plate 621 so that the connecting portion 641 rotates from being connected in series with the third switch 52 to being connected in series with the fourth switch 53, and the electric control module 3 switches from the first isolation circuit 321 to the closing circuit 33; the signal trigger plate 64 rotates with the locking plate 621 so that the connecting portion 641 rotates from being connected in series with the fourth switch 53 to being connected in series with the third switch 52, and the electric control module 3 switches from the closing circuit 33 to the The first isolation circuit 321; the signal trigger plate 64 rotates with the locking plate 621 to rotate the connecting part 641 from being connected in series with the third switch 52 to being connected in series with the second switch 51, and the electric control module 3 is switched from the second isolation circuit 322 to the grounding circuit 31; the signal trigger plate 64 rotates with the locking plate 621 to rotate the connecting part 641 from being connected in series with the second switch 51 to being connected in series with the third switch 52, and the electric control module 3 is switched from the grounding circuit 31 to the second isolation circuit 322.

[0065] Specifically, the second switch 51 is adjacent to the third switch 52, the third switch 52 is adjacent to the fourth switch 53, and the angle of rotation required for the locking plate 621 to rotate to the next adjacent locking position is equal to the angle of rotation required for the signal trigger plate 64 to rotate to be connected in series with the next adjacent switch.

[0066] See also Figures 16 to 19 When the ultra-thin electric three-position operating device 1 switches from the first isolation circuit 321 to the closing circuit 33, after the locking plate 621 rotates clockwise to a predetermined position, the locking latches 622 located at the upper right and lower right of the locking plate 621 lock the locking plate 621; when the ultra-thin electric three-position operating device 1 switches from the closing circuit 33 to the first isolation circuit 321, after the locking plate 621 rotates counterclockwise to a predetermined position, the locking latches 622 located at the upper left and lower left of the locking plate 621 lock the locking plate 621. ; When the ultra-thin electric three-position operating device 1 switches from the second isolation circuit 322 to the grounding circuit 31, after the locking plate 621 rotates counterclockwise to a predetermined position, the locking latches 622 located at the upper right and lower right of the locking plate 621 lock the locking plate 621; when the ultra-thin electric three-position operating device 1 switches from the grounding circuit 31 to the second isolation circuit 322, after the locking plate 621 rotates clockwise to a predetermined position, the locking latches 622 located at the upper left and lower left of the locking plate 621 lock the locking plate 621.

[0067] See also Figure 26 to Figure 27 The electric drive mechanism 7 includes a drive motor 71 and a transmission assembly 72. The drive motor 71 is connected to the energy storage mechanism 6 through the transmission assembly 72. The transmission assembly 72 is configured as a plurality of gear sets, including a first gear 721 which is sleeved on the elastic energy storage rod 61 and connected to the transmission part 611 thereof.

[0068] See also Figure 11 to Figure 12 Specifically, when the first gear 721 rotates, the transmission part 611 rotates accordingly, and the first gear 721, the transmission part 611 and the driving motor 71 rotate in the same direction.

[0069] See also Figure 26 to Figure 27 The transmission assembly 72 also includes a second gear 722 matching the first gear 721, a first operating shaft 723 is provided on the elastic energy storage rod 61, a first operating hole 7231 is provided on the first operating shaft 723, a second operating shaft 724 is provided in the middle of the second gear 722, and a second operating hole 7241 is provided on the second operating shaft 724.

[0070] See also Figure 3 to Figure 4 A perforated plate 13 is provided between the electric-controlled locking component 4 and the signal acquisition component 5. The perforated plate 13 is rotatably arranged on the front plate 22 of the mechanism. A first blocking portion 131 and a second blocking portion 132 are provided on the perforated plate 13. An operating knob 133 is provided on the limiting plate 443. The first operating hole 7231 is located on the rotation track of the first blocking portion 131, and the second operating hole 7241 is located on the rotation track of the second blocking portion 132. An operating handle (not shown in the figure) is also included. The operating handle is used to be inserted into the first operating hole 7231 or the second operating hole 7241, and the first gear 721 and the second gear 722 are driven to rotate by manually rotating the operating handle.

[0071] Working process of three-station operating device 1:

[0072] The three-station operating device 1 can be operated electrically or manually.

[0073] 1. Electric operation

[0074] (1) See Figure 7 and Fig.23 The first push structure 42 is pulsed and energized, the first push rod 421 pushes the rocker 442 upward, the rocker 442 rotates counterclockwise to drive the limit plate 443 to rotate clockwise until the flange 4432 presses against the first switch 41, the first switch 41 switches to a normally open contact, and the closing circuit 33 and the front circuit of the first isolation circuit 321 are turned on.

[0075] (2) See Fig.12 , Fig.19 and Fig.24, the driving motor 71 rotates clockwise and transmits the first gear 721 to rotate in the same direction through the transmission assembly 72, the transmission part 611 and the unlocking plate 631 of the elastic energy storage rod 61 rotate accordingly, the energy storage part 612 continues to store energy, and when the unlocking plate 631 rotates to push the locking latch 622 of the locking plate 621, the energy storage part 612 and the locking plate 621 are unlocked, and the energy storage part 612 releases the stored energy and rotates clockwise, the locking plate 621 rotates accordingly and drives the signal trigger plate 64 to rotate in the same direction until the locking plate 621 is locked by the locking latch 622 located at the upper right and lower right thereof. At this time, the signal trigger plate 64 rotates to be connected in series with the fourth switch 53, the rear circuit of the closing circuit 33 is turned on, and the three-station operating device 1 enters the closing state.

[0076] (3) See Fig.12 , Fig.16 and Fig.23 , the driving motor 71 rotates counterclockwise and transmits the first gear 721 to rotate in the same direction through the transmission assembly 72, the transmission part 611 and the unlocking plate 631 of the elastic energy storage rod 61 rotate accordingly, the energy storage part 612 continues to store energy, and when the unlocking plate 631 rotates to push the locking latch 622 of the locking plate 621, the energy storage part 612 and the locking plate 621 are unlocked, and the energy storage part 612 releases the stored energy and rotates counterclockwise, the locking plate 621 rotates accordingly and drives the signal trigger plate 64 to rotate in the same direction until the locking plate 621 is locked by the locking latch 622 located at its upper left and lower left. At this time, the signal trigger plate 64 rotates to be connected in series with the third switch 53, the rear circuit of the first isolation circuit 321 is turned on, and the three-station operating device 1 enters the isolation state.

[0077] (4) See Fig. 9 and Fig.28 The second push structure 43 is pulsed and energized, and the second push rod 431 pushes the rocker 442 upward. The rocker 442 rotates clockwise and drives the limit plate 443 to rotate counterclockwise until the concave arc portion 4433 presses against the first switch 41. The first switch 41 switches to a normally closed contact, and the second isolation circuit 322 and the front section circuit of the grounding circuit 31 are turned on.

[0078] (5) See Fig.12 , Fig.18 and Fig.25, the driving motor 71 rotates counterclockwise and transmits the first gear 721 to rotate in the same direction through the transmission assembly 72, the transmission part 611 and the unlocking plate 631 of the elastic energy storage rod 61 rotate accordingly, the energy storage part 612 continues to store energy, and when the unlocking plate 631 rotates to push the locking latch 622 of the locking plate 621, the energy storage part 612 and the locking plate 621 are unlocked, and the energy storage part 612 releases the stored energy and rotates counterclockwise, the locking plate 621 rotates accordingly and drives the signal trigger plate 64 to rotate in the same direction until the locking plate 621 is locked by the locking latch 622 located at the upper right and lower right thereof. At this time, the signal trigger plate 64 rotates to be connected in series with the second switch 51, the rear circuit of the grounding circuit 31 is turned on, and the three-station operating device 1 enters the grounding state.

[0079] (6) See Fig.12 , Fig.16 and Fig.23 , the driving motor 71 rotates clockwise and transmits the first gear 721 to rotate in the same direction through the transmission assembly 72, the transmission part 611 and the unlocking plate 631 of the elastic energy storage rod 61 rotate accordingly, the energy storage part 612 continues to store energy, and when the unlocking plate 631 rotates to push the locking latch 622 against the locking plate 621, the energy storage part 612 and the locking plate 621 are unlocked, and the energy storage part 612 releases the stored energy and rotates clockwise, the locking plate 621 rotates accordingly and drives the signal trigger plate 64 to rotate in the same direction until the locking plate 621 is locked by the locking latch 622 located at the upper left and lower left of it. At this time, the signal trigger plate 64 rotates to be connected in series with the third switch 52, the rear circuit of the second isolation circuit 322 is turned on, and the three-station operating device 1 enters the isolation state.

[0080] 2. Manual operation

[0081] (1) See Figure 7 and Fig.23 , rotate the operating knob 133 clockwise, so that it drives the shielding plate 13 to rotate until the first operating hole 7231 is exposed and the second operating hole 7241 is blocked by the second blocking portion 132, and drives the limiting plate 443 to rotate until the flange portion 4432 abuts against the first switch 41, the first switch 41 switches to a normally open contact, and the closing circuit 33 and the front circuit of the first isolation circuit 321 are turned on.

[0082] (2) See Fig.12 , Fig.19 and Fig.24 , insert the operating handle into the first operating hole 7231, rotate the operating handle clockwise, so that the transmission part 611 of the elastic energy storage rod 61 rotates accordingly, so that the signal trigger plate 64 rotates to be connected in series with the fourth switch 53 (the principle is the same as the electric operation), the closing circuit 33 is turned on, and the three-position operating device 1 enters the closing state.

[0083] (3) See Fig.12 , Fig.16 and Fig.23 , insert the operating handle into the first operating hole 7231, rotate the operating handle counterclockwise, so that the transmission part 611 of the elastic energy storage rod 61 rotates accordingly, so that the signal trigger plate 64 rotates to be connected in series with the third switch 52 (the principle is the same as the electric operation), the first isolation circuit 321 is turned on, and the three-station operating device 1 enters the isolation state.

[0084] (4) See Fig. 9 and Fig.28 , rotate the operating knob 133 counterclockwise, so that it drives the shielding plate 13 to rotate until the second operating hole 7241 is exposed and the first operating hole 7231 is blocked by the first blocking portion 131, and drives the limiting plate 443 to rotate until the flange portion 4432 abuts against the first switch 41, the first switch 41 switches to a normally open contact, and the closing circuit 33 and the front circuit of the first isolation circuit 321 are turned on.

[0085] (5) See Fig.12 , Fig.18 and Fig.25 , insert the operating handle into the second operating hole 7241, rotate the operating handle clockwise, so that the second gear 722 rotates with it and drives the first gear 721 matched with it to rotate counterclockwise, and the transmission part 611 of the elastic energy storage rod 61 rotates counterclockwise with it, so that the signal trigger plate 64 rotates to be connected in series with the second switch 51 (the principle is the same as the electric operation), the grounding circuit 31 is turned on, and the three-position operating device 1 enters the grounding state.

[0086] (6) See Fig.12 , Fig.16 and Fig.23 , insert the operating handle into the second operating hole 7241, rotate the operating handle counterclockwise, so that the second gear 722 rotates and drives the first gear 721 matched with it to rotate clockwise, and the transmission part 611 of the elastic energy storage rod 61 rotates clockwise accordingly, so that the signal trigger plate 64 rotates to be connected in series with the third switch 52 (the principle is the same as that of electric operation), the second isolation circuit 322 is turned on, and the three-station operating device 1 enters the isolation state.

[0087] Compared with the prior art, the ultra-thin electric three-position operating device of the present invention has the following beneficial effects:

[0088] (1) The isolation operation, closing operation and grounding operation of the present invention are all controlled by the electric control module, thereby reducing the number of parts, simplifying the internal structure, improving the compactness of the structure, reducing the size of the mechanism, and reducing the production cost, making the present invention suitable for medium-voltage switchgear such as normal-pressure sealed air-insulated switchgear;

[0089] (2) In the electric control module of the present invention, the normally open and normally closed contacts of the first switch in the electric locking assembly are used to switch the operating device between the closing circuit and the grounding circuit, respectively, to realize the independent operation of closing and grounding. Then, the normally open and normally closed contact combination of the third switch and the fourth switch in the signal acquisition assembly is used to switch the operating device between the closing circuit and the isolation circuit, or the normally open and normally closed contact combination of the second switch and the third switch in the signal acquisition assembly is used to switch the operating device between the grounding circuit and the isolation circuit. The components are simplified and the operation is flexible. Embodiment 2

[0090] See also Figures 1 to 28 The present embodiment discloses an electric three-position operating system, including a controller 9 and an electric three-position operating device 1, wherein the controller 9 is electrically connected to the electric three-position operating device 1, and the controller 9 includes: a main switch 10, an electric locking circuit 11 and a starting circuit 12, wherein the main switch 10 is used to close and start the electric three-position operating device 1; a fifth switch 111 is included, a first push-up structure 42 and a second push-up structure 43 are connected in parallel, the other end of the first push-up structure 42 is connected to a first contact 1111 of the fifth switch 111, the other end of the second push-up structure 43 is connected to a second contact 1112 of the fifth switch 111, and the common end of the fifth switch 111 can selectively connect the first contact 1111 or the second contact 1112; a first relay 121, a second relay 122 , a sixth switch 123 and a seventh switch 124, the first relay 121 is connected in parallel with the closing circuit 33 and the first isolation circuit 321, and the normally open contact 1211 of the first relay 121 is connected in series with the closing circuit 33, and the normally closed contact 1212 of the first relay 121 is connected in series with the grounding circuit 31; the second relay 122 is connected in parallel with the grounding circuit 31 and the second isolation circuit 322, and the normally open contact 1221 of the second relay 122 is connected in series with the second isolation circuit 322, and the normally closed contact 1222 of the second relay 122 is connected in series with the first isolation circuit 321; the sixth switch 123 is used to selectively turn on the closing circuit 33 or the first isolation circuit 321, and the seventh switch 124 is used to selectively turn on the grounding circuit 31 or the second isolation circuit 322.

[0091] Working process of the three-station operating system:

[0092] Turn on the main switch 10 of the controller 9.

[0093] (1) See Figure 7 and Fig.23 , the fifth switch 111 is rotated clockwise to make the first push-up structure 42 pulse energized, so that the closing circuit 33 of the three-station operating device 1 and the front circuit of the first isolation circuit 321 are turned on.

[0094] (2) See Fig.12 , Fig.19 and Fig.24 , rotate the sixth switch 123 clockwise, drive the motor 71 to start forward rotation, and make the first gear 721 rotate clockwise, so that the three-position operating device 1 enters the closed state.

[0095] (3) See Fig.12 , Fig.16 and Fig.23 , rotate the sixth switch 123 counterclockwise, drive the motor 71 to start reverse rotation, and make the first gear 721 rotate counterclockwise, so that the three-station operating device 1 enters the isolation state.

[0096] (4) See Fig. 9 and Fig.28 , the fifth switch 111 is rotated counterclockwise to make the second ejection structure 43 pulse energized, so that the second isolation circuit 322 of the three-station operating device 1 and the front section circuit of the grounding circuit 31 are turned on.

[0097] (5) See Fig.12 , Fig.18 and Fig.25 , rotate the seventh switch 124 clockwise, drive the motor 71 to start reverse rotation, and make the first gear 721 rotate counterclockwise, so that the three-station operating device 1 enters the grounding state.

[0098] (6) See Fig.12 , Fig.16 and Fig.23 , rotate the seventh switch 124 counterclockwise, drive the motor 71 to start forward rotation, and make the first gear 721 rotate clockwise, so that the three-station operating device 1 enters the isolation state.

[0099] Compared with the prior art, the electric three-position operating system of the present invention has a relatively small number of parts and components, a relatively low cost, a compact structure, a small size, and simple operation because it applies the above solution.

[0100] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. An ultra-thin electric three-position operating device, characterized in that: include A housing (2), the housing (2) comprising a mechanism bottom plate (21) and a mechanism front plate (22); An electric control module (3), the electric control module (3) comprising an electric locking component (4) and a signal acquisition component (5), the electric locking component (4) being arranged on the mechanism front plate (22), and comprising a first switch (41); the signal acquisition component (5) comprising a second switch (51), a third switch (52) and a fourth switch (53), and being coupled with the electric locking component (4) to form a grounding circuit (31), an isolation circuit (32) and a closing circuit (33); An energy storage mechanism (6), the energy storage mechanism (6) comprising an elastic energy storage rod (61), a locking structure (62), an unlocking structure (63) and a signal triggering plate (64), the elastic energy storage rod (61) being arranged on a mechanism bottom plate (21), the locking structure (62) being used to lock the elastic energy storage rod (61), and the unlocking structure (63) and the signal triggering plate (64) being rotatably arranged on the elastic energy storage rod (61); An electric drive mechanism (7), the electric drive mechanism (7) being arranged on the mechanism bottom plate (21) and being transmission-connected to the energy storage mechanism (6); When the electric drive mechanism (7) drives the elastic energy storage rod (61) to store energy, the unlocking structure (63) rotates with the elastic energy storage rod (61) and triggers the locking structure (62) to release the kinetic energy of the elastic energy storage rod (61), and the signal triggering plate (64) rotates with the kinetic energy released by the elastic energy storage rod (61), thereby pressing the second switch (51) or the third switch (52) or the fourth switch (53) to achieve switching between the grounding circuit (31), the isolation circuit (32) and the closing circuit (33).

2. The ultra-thin electric three-position operating device according to claim 1 is characterized in that: The elastic energy storage rod (61) comprises a transmission part (611), an energy storage part (612) and a connecting shaft (613); the connecting shaft (613) is arranged on the mechanism bottom plate (21); the transmission part (611) and the energy storage part (612) are respectively arranged on the connecting shaft (613); the transmission part (611) and the energy storage part (612) can be twisted relative to each other and generate elastic potential energy; the transmission part (611) is in transmission connection with the electric drive mechanism (7); The locking structure (62) comprises a locking plate (621) and a locking latch (622); the locking plate (621) is arranged on the energy storage part (612); the locking latch (622) is arranged on the mechanism bottom plate (21); the locking latch (622) abuts against the locking plate (621) to lock the energy storage part (612); the unlocking structure (63) is arranged to rotate with the transmission part (611) and when it rotates to the first position (8), the unlocking structure (63) pushes the locking latch (622) to release the elastic potential energy of the energy storage part (612); The signal triggering board (64) is connected to the locking board (621), thereby realizing switching between the grounding circuit (31), the isolation circuit (32) and the closing circuit (33).

3. The ultra-thin electric three-position operating device according to claim 2 is characterized in that: The unlocking structure (63) comprises an unlocking plate (631), wherein the unlocking plate (631) is symmetrically provided with a trigger portion (6311) for pushing up a locking latch (622) to unlock the locking plate (621); the locking latch (622) comprises an elastic reset member (6221) and a locking member (6222), wherein the locking member (6222) is provided with a locking end (6223), wherein the locking end (6223) is provided with a locking portion (6224) corresponding to the locking plate (621), and wherein the locking end (6223) is provided with an unlocking portion (6225) corresponding to the unlocking plate (631), wherein the elastic reset member (6221) is used to reset the locking end (6223) toward the axial direction of the locking plate (621); and the locking plate (621) is provided with a V-shaped portion (6211) for the locking latch (622) to lock.

4. The ultra-thin electric three-position operating device according to claim 1, characterized in that: The electric locking assembly (4) comprises a first push-up structure (42), a second push-up structure (43) and a rocker structure (44); the first push-up structure (42) and the second push-up structure (43) are arranged opposite to each other; the rocker structure (44) is arranged between the first push-up structure (42) and the second push-up structure (43); the first push-up structure (42) and the second push-up structure (43) are actuated to cause the rocker structure (44) to swing and press against the first switch (41), thereby switching the normally closed and normally open contacts of the first switch (41).

5. The ultra-thin electric three-position operating device according to claim 4, characterized in that: The rocker structure (44) comprises a locking bracket (441), a rocker (442) and a limit plate (443); one end of the rocker (442) is rotatably disposed on the locking bracket (441) via a connecting support (444) fixedly disposed on the locking bracket (441); a cylindrical pin (445) is welded to the other end; a waist-shaped hole (4431) is provided on a side of the limit plate (443) close to the rocker (442); and the cylindrical pin (445) is welded to the locking bracket (441). Slidably disposed in the waist-shaped hole (4431), the limiting plate (443) is provided with a flange portion (4432) on one side close to the first switch (41) for pressing the first switch (41) so that the first switch (41) switches to a normally open contact, the flange portion (4432) and the outer side of the limiting plate (443) forming a concave arc portion (4433), the concave arc portion (4433) being used to press the first switch (41) so that the first switch (41) switches to a normally closed contact.

6. The ultra-thin electric three-position operating device according to claim 1, characterized in that: The closing circuit (33) comprises: a normally open contact of a third switch (52) and a normally closed contact of a fourth switch (53) connected in series; The isolation circuit (32) comprises a first isolation circuit (321) and a second isolation circuit (322); The first isolation circuit (321) comprises: a normally closed contact of a third switch (52) and a normally open contact of a fourth switch (53) connected in series; The second isolation circuit (322) comprises: a normally closed contact of a third switch (52) and a normally open contact of a second switch (51) connected in series; The grounding circuit (31) comprises: a normally open contact of a third switch (52) and a normally closed contact of a second switch (51) connected in series; The closing circuit (33) is connected in parallel with the first isolation circuit (321) and then connected to the normally open contact of the first switch (41); the grounding circuit (31) is connected in parallel with the second isolation circuit (322) and then connected to the normally closed contact of the first switch (41).

7. The ultra-thin electric three-position operating device according to claim 6, characterized in that: The signal triggering plate (64) is provided with a connecting portion (641). The signal trigger plate (64) rotates along with the locking plate (621) so that the connecting portion (641) rotates from being connected in series with the third switch (52) to being connected in series with the fourth switch (53), and the electric control module (3) switches from the first isolation circuit (321) to the closing circuit (33); The signal trigger plate (64) rotates along with the locking plate (621) so that the connecting portion (641) rotates from being connected in series with the fourth switch (53) to being connected in series with the third switch (52), and the electric control module (3) switches from the closing circuit (33) to the first isolation circuit (321); The signal trigger plate (64) rotates along with the locking plate (621) so that the connecting portion (641) rotates from being connected in series with the third switch (52) to being connected in series with the second switch (51), and the electric control module (3) switches from the second isolation circuit (322) to the grounding circuit (31); The signal trigger plate (64) rotates along with the locking plate (621) so that the connecting portion (641) rotates from being connected in series with the second switch (51) to being connected in series with the third switch (52), and the electric control module (3) switches from the grounding circuit (31) to the second isolation circuit (322).

8. The ultra-thin electric three-position operating device according to claim 3, characterized in that: When the ultra-thin electric three-position operating device switches from the first isolation circuit (321) to the closing circuit (33), the locking plate (621) rotates clockwise to a predetermined position, and the locking latches (622) located at the upper right and lower right of the locking plate (621) lock the locking plate (621); When the ultra-thin electric three-position operating device switches from the closing circuit (33) to the first isolation circuit (321), the locking plate (621) rotates counterclockwise to a predetermined position, and the locking latches (622) located at the upper left and lower left of the locking plate (621) lock the locking plate (621); When the ultra-thin electric three-position operating device switches from the second isolation circuit (322) to the grounding circuit (31), the locking plate (621) rotates counterclockwise to a predetermined position, and the locking latches (622) located at the upper right and lower right of the locking plate (621) lock the locking plate (621); When the ultra-thin electric three-position operating device switches from the grounding circuit (31) to the second isolation circuit (322), the locking plate (621) rotates clockwise to a predetermined position, and the locking latches (622) located at the upper left and lower left of the locking plate (621) lock the locking plate (621).

9. The ultra-thin electric three-position operating device according to claim 1, characterized in that: The electric drive mechanism (7) comprises a drive motor (71) and a transmission assembly (72); the drive motor (71) is transmission-connected to the energy storage mechanism (6) via the transmission assembly (72); the transmission assembly (72) is configured as a plurality of gear sets, including a first gear (721) sleeved on the elastic energy storage rod (61) and connected to its transmission portion (611).

10. An electric three-position operating system, characterized in that: The invention comprises a controller (9) and the electric three-position operating device according to any one of claims 1 to 9, wherein the controller (9) is electrically connected to the electric three-position operating device, and the controller (9) comprises: A main switch (10), the main switch (10) being used to shut down and start the electric three-position operating device; An electric locking circuit (11) comprises a fifth switch (111), a first push-up structure (42) and a second push-up structure (43) connected in parallel, the other end of the first push-up structure (42) being connected to a first contact (1111) of the fifth switch (111), the other end of the second push-up structure (43) being connected to a second contact (1112) of the fifth switch (111), and the common end of the fifth switch (111) being selectively connected to the first contact (1111) or the second contact (1112); A starting circuit (12), comprising a first relay (121), a second relay (122), a sixth switch (123) and a seventh switch (124), wherein the first relay (121) is connected in parallel with the closing circuit (33) and the first isolation circuit (321), and the normally open contact (1211) of the first relay (121) is connected in series with the closing circuit (33), and the normally closed contact (1212) of the first relay (121) is connected in series with the grounding circuit (31); the second relay (122) is connected in parallel with the grounding circuit (31) and the second isolation circuit (322), and the normally open contact (1221) of the second relay (122) is connected in series with the second isolation circuit (322), and the normally closed contact (1222) of the second relay (122) is connected in series with the first isolation circuit (321); The sixth switch (123) is used to selectively conduct the closing circuit (33) or the first isolation circuit (321), and the seventh switch (124) is used to selectively conduct the grounding circuit (31) or the second isolation circuit (322).

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