An operating structure of a dual power transfer switch

Abstract

The present invention discloses an operating structure of a dual-power conversion switch, comprising a main shaft provided with a moving contact and three groups of static contacts, wherein the structure further comprises a first transmission shaft, a first wheel disc, a second wheel disc and two energy storage mechanisms, wherein one end of the first transmission shaft is linked to the first wheel disc, and the other end is coordinated with an external driving member; the second wheel disc is linked to one end of the main shaft, the first wheel disc and the second wheel disc are separately arranged, the two energy storage mechanisms are respectively arranged on both sides of the first wheel disc and the second wheel disc, and the first wheel disc is linked to the second wheel disc through the two energy storage mechanisms; the present invention has modular installation, simple structure, stability and anti-misoperation.

Description

Technical Field

[0001] The invention relates to an operating structure of a dual power supply transfer switch. Background Art

[0002] A dual power transfer switch is usually equipped with a normal power supply and a backup power supply, and the power supply effect is achieved by switching between the normal power supply and the backup power supply.

[0003] However, the operating structure of existing dual-power transfer switches is typically complex, consisting of a main shaft with a moving contact and three sets of stationary contacts. In actual operation, the main shaft is rotated to connect two sets of stationary contacts, creating a dual power supply. However, the existing operating structure directly drives the main shaft through an external handle, which can easily cause arcing if misoperated, posing a serious safety hazard. Summary of the Invention

[0004] The main technical problem solved by the present invention is to provide an operating structure of a dual power conversion switch.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an operating structure of a dual power conversion switch, including a main shaft with a moving contact and three groups of static contacts, wherein, it also includes a first transmission shaft, a first wheel, a second wheel and two energy storage mechanisms, one end of the first transmission shaft is linked to the first wheel, and the other end cooperates with the external driving member; the second wheel is linked to one end of the main shaft, the first wheel and the second wheel are separately arranged, and the two energy storage mechanisms are respectively arranged on both sides of the first wheel and the second wheel, and the first wheel is linked to the second wheel through the two energy storage mechanisms.

[0006] After the two discs are separated, they are driven by two energy storage mechanisms to form a linkage effect. In the event of an erroneous operation, the first drive shaft first drives the first disc to rotate. After idling for a certain angle, it drives the energy storage mechanism to store energy. At this time, the second disc does not move. If an erroneous operation is discovered at this time, no accident will occur. When the operator determines that the operation is normal, it is necessary to further rotate the first drive shaft, thereby driving the second disc to rotate, realizing circuit switching or the double-opening position.

[0007] Among them, two first waist-shaped holes are provided on the first wheel disc, two second waist-shaped holes are provided on the second wheel disc, a transmission rod is provided on the energy storage mechanism, and a transmission pin is provided on the top of the transmission rod. The transmission pin passes through the first waist-shaped hole and the second waist-shaped hole to realize the linkage between the first wheel disc and the second wheel disc.

[0008] With the setting of two waist-shaped holes, under normal conditions, due to the idling of the first wheel disc, the transmission pin is driven to move from one side of the first waist-shaped hole to the other side of the first waist-shaped hole to achieve mutual offset. At this time, the energy storage mechanism reaches the dead point and continues to rotate, which can drive the second wheel disc to move, thereby realizing the action of the moving contact. The energy storage mechanism releases energy, which further improves the overall switching speed and prevents arcing.

[0009] The length of the second waist-shaped hole is greater than the length of the first waist-shaped hole.

[0010] The length of the second waist-shaped hole is greater than that of the first waist-shaped hole. Firstly, it is to provide initial power. When the energy storage mechanism is at the dead point, if the first wheel has no subsequent force, there are two situations according to the action of the force: maintaining still or the energy storage mechanism releasing energy and moving in the opposite direction, or even returning to the initial position. Therefore, a subsequent force needs to be provided at this time. At this time, the distance between the side walls of the two waist-shaped holes is the distance required to provide this force; secondly, at this time, the driving force is relatively large. Compared with the previous idling of the first wheel, more force is required at this time. Therefore, the operator has difficulty in turning and may be seriously aware that he is in a wrong operation state, which can also play a rescue effect.

[0011] The top end of the transmission rod is a U-shaped structure, and the first wheel disc and the second wheel disc extend into the top end of the transmission rod.

[0012] The top of the transmission rod is wrapped in a U-shape, which makes the overall transmission effect better. Moreover, the two wheels are located inside the U-shape, which plays a protective effect. Compared with the existing technology, one wheel corresponds to two energy storage mechanisms, and two wheels correspond to four energy storage mechanisms, which have uneven force, cumbersome installation, and unstable transmission. This structure only requires two energy storage mechanisms, with a simple structure, stable energy storage, and easy installation.

[0013] It also includes two parallel fixed plates, a limit pin is provided between the two fixed plates, a slide groove is provided on the transmission rod, the limit pin slides on the slide groove, and a reset piece is sleeved on the transmission rod, and the other end of the reset piece is located on the movement track of the limit pin.

[0014] The arrangement of two fixed plates enables the transmission rod to form an energy storage effect during movement, thereby ensuring the stability of the overall operation.

[0015] The first wheel disc is provided with a first fixing post, which is provided with a first fixing hole; the second wheel disc is provided with a second fixing post, which is provided with a second fixing hole, and the first fixing hole and the second fixing hole have different shapes.

[0016] The use of two fixed columns improves the linkage effect between the first wheel and the first transmission shaft. Due to the height limitation of the first wheel itself, the addition of the first fixed column increases the contact area between the two, making it less likely to fall off during the driving process. The provision of the second fixed column also has the effect of increasing the contact area. Here, the second fixed column also has a function of passing through the fixed plate to improve the overall fixing effect and ensure the concentricity of the main shaft rotation. Moreover, the length of the second fixed column is greater than that of the first fixed column because the length of the main shaft and the length of the first transmission shaft are limited, further ensuring the stability of the overall transmission.

[0017] It also includes a motor and a reduction gearbox. The motor is linked to one end of the reduction gearbox, and the first transmission shaft is linked to the other end of the reduction gearbox.

[0018] The integrated electric and manual setting makes the entire switch operation diverse and can be operated both electrically and manually.

[0019] The reduction gearbox is provided with at least two double gears and a clutch mechanism, the double gears include an upper tooth portion and a lower tooth portion, and the clutch mechanism separates the upper tooth portion from the lower tooth portion of one of the double gears.

[0020] The clutch reduction gearbox is used. When the motor fails or the gearbox is stuck, the first transmission shaft can be separated from the motor through the clutch mechanism, ensuring that manual operation is effortless.

[0021] Wherein, a limit cam is sleeved on the main shaft, and corresponding micro switches are respectively provided on both sides of the limit cam.

[0022] The micro switch is set up. When the spindle rotates to a certain position, the micro switch controls the motor to stop running to prevent misoperation.

[0023] It also includes an elastic limiting protrusion, which is located on the movement track of the limiting cam.

[0024] The elastic limit protrusion ensures three-point positioning: the double-open state, the normal power state, and the backup power state, thus ensuring the overall limit effect and preventing excessive rotation. Compared with the limit setting in the existing technology, this structure is more stable.

[0025] Among them, the first transmission shaft, the first wheel disc, the second wheel disc and the two energy storage mechanisms are modularly integrated.

[0026] The modular design simplifies processing. Unlike existing methods, which require individual components to be assembled within the housing, the present invention requires only inserting the spindle into the second disc and then bolting it to the fixing plate for secure installation. Furthermore, the modular design allows for faster assembly line processing and reduces production complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of embodiment 1 of the present invention;

[0028] Figure 2 This is a structural diagram of another angle of embodiment 1 of the present invention;

[0029] Figure 3 is a partial exploded view of Example 1 of the present invention;

[0030] Figure 4 It is a schematic diagram of the partial structure of Example 1 of the present invention;

[0031] Figure 5 yes Figure 4 Exploded diagram;

[0032] Figure 6 This is a schematic structural diagram of a double-opening switch in Example 1 of the present invention;

[0033] Figure 7 This is a schematic structural diagram of the energy storage mechanism located at a dead point in Example 1 of the present invention;

[0034] Figure 8 This is a schematic structural diagram of the first transmission pin and the second waist-shaped hole on the second wheel disc in embodiment 1 of the present invention;

[0035] Figure 9 This is a schematic diagram of the structure of the embodiment 1 of the present invention when the circuit breaker is closed;

[0036] Figure 10 is a schematic structural diagram of the first transmission rod in Example 1 of the present invention;

[0037] Figure 11 1 is a schematic structural diagram of the limit cam in Example 1 of the present invention;

[0038] Figure 12 1 is a schematic structural diagram of the reduction gearbox in Example 1 of the present invention;

[0039] Figure 13 Schematic diagram of the double-tooth holding state in Example 1 of the present invention;

[0040] Figure 14 Schematic diagram of the double-tooth release state in embodiment 1 of the present invention. DETAILED DESCRIPTION

[0041] Example 1:

[0042] Refer to the attached Figure 1-14 As shown, an operating structure of a dual power transfer switch includes a housing 1 , wherein the housing 1 includes a contact chamber 11 and an operating chamber 12 .

[0043] The contact chamber 11 is provided with a main shaft 2 of a moving contact 111 and three groups of static contacts 112. The three groups of static contacts 112 are respectively a normal power static contact, a backup power static contact and an output static contact. The moving contact 111 rotates so that the normal power static contact is connected to the output static contact, and the normal power supply can be turned on. At this time, the backup power static contact is not connected to the output static contact. When the moving contact 111 rotates so that the backup power static contact is connected to the output static contact, the backup power can be turned on. At this time, the normal power static contact is not connected to the output static contact. When both the normal power static contact and the backup power static contact are not connected to the output static contact, it is a double-opening state. The structure of the moving contact 111 and the static contact 112 here is a well-known technology, so it will not be elaborated here. It should be noted that the main shaft 2 partially passes through the operating chamber 12, and the main shaft 2 is a square shaft setting, specifically a square.

[0044] The two fixing plates 3 are arranged in parallel and perpendicular to the operating chamber 12. A cavity is formed between the two fixing plates 3. The first wheel disc 4, the second wheel disc 5 and the two energy storage mechanisms 6 are all located in this cavity. Furthermore, it should be noted that a transverse fixing portion 31 is provided on the bottom of the fixing plate 3 facing the first transmission shaft 7. The transverse fixing portion 31 is in contact with the bottom surface of the operating chamber 12 and is bolted to the operating chamber 12. It should be noted that an opening is provided on the fixing plate 3 near the contact chamber 11 to match the second fixing column 52 on the second wheel disc 5, and an opening is provided on the fixing plate 3 near the first transmission shaft 7 to match the first transmission shaft 7.

[0045] The two fixing plates 3 are fixed by a plurality of bolts. Two limit pins 32 are further provided between the two fixing plates 3. The two limit pins 32 are symmetrically arranged and correspond to the two transmission rods.

[0046] The first wheel disc 4 is provided with a first wheel disc portion 41 and a first fixing post 42. The first fixing post 42 is provided with a first fixing hole 421 adapted to the first transmission shaft 7. Here, the first fixing hole 421 runs from the first fixing post 42 to the entire first wheel disc 4. The first fixing hole 421 is located at the center. It should be noted that the shape of the first fixing hole 421 is different from that of the second fixing hole. Here, the first fixing hole 421 is not square, but is runway-shaped, and the main shaft 2 cannot extend into the first fixing hole 421, thereby ensuring the separation structure between the two wheels. Here, the height of the first fixing post 42 is at least twice the height of the first wheel disc portion 41, thereby ensuring the linkage effect between the first wheel disc 4 and the first transmission shaft 7. The addition of the first fixing post 42 increases the contact area between the two, making it less likely to fall off during the driving process. The first wheel disc portion 41 is provided with two first waist-shaped holes 411, and the two first waist-shaped holes 411 are symmetrically arranged.

[0047] The second disc 5 is provided with a second disc portion 51 and a second fixing post 52. The second fixing post 52 is provided with a second fixing hole 521 that mates with the spindle 2. Here, the second fixing hole 521 extends from the second fixing post 52 throughout the entire second disc 5, with the second fixing hole 521 being located at the center. It is important to note that the shape of the first fixing hole 421 differs from that of the second fixing hole 521. Here, the second fixing hole 521 is square, and the first transmission shaft 7 cannot extend into the second fixing hole 521, thus ensuring the separation of the two discs. The height of the second fixing post 52 is at least twice that of the second disc portion 51, ensuring the linkage between the second disc 5 and the spindle 2. The addition of the second fixing post 52 increases the contact area between the two, making it less likely to fall off during operation. The second fixing post 52 also serves to penetrate the fixing plate 3, enhancing the overall fixation and ensuring the concentricity of the spindle 2's rotation. The second disc portion 51 is provided with two second waist-shaped holes 511, which are symmetrically arranged.

[0048] It should be noted that the main shaft 2 and the first transmission shaft 7 are concentric, ensuring that they are on the same plane, making the transmission more stable. The main shaft 2 and the first transmission shaft 7 are arranged in two sections, which reduces the production difficulty. Compared with the main shaft 2 in the prior art, the length is more difficult to process and it is difficult to ensure the concentricity of the main shaft 2.

[0049] When the first wheel disc 4 and the second wheel disc 5 are fitted together, they are merely fitted together and no linkage occurs. The linkage can only be achieved through the energy storage mechanism 6. After the first wheel disc 4 and the second wheel disc 5 are fitted together, the first wheel disc portion 41 and the second wheel disc portion 51 are set to the same size, that is, the size and height are the same. The first waist-shaped hole 411 and the second waist-shaped hole 511 are set correspondingly. The only difference is that the length of the second waist-shaped hole 511 is greater than the length of the first waist-shaped hole 411, so that the energy storage mechanism 6 needs to move a distance after being located at the dead point. The distance here is the length difference between the two waist-shaped holes. Since the two waist-shaped holes are both arc-shaped holes, the specific length here is replaced by the central angle on the second wheel disc 5. Wheels of different sizes have different lengths. The central angle of the length difference here is 3-8°, and 5° is preferred here. The length of the second waist-shaped hole 511 is greater than that of the first waist-shaped hole 411. First, it is to provide initial power. When the energy storage mechanism 6 is at the dead point, if the first wheel disc 4 does not provide subsequent force, according to the action of the force, there are two states: maintaining stillness or the energy storage mechanism 6 releasing energy and moving in the opposite direction, or even returning to the initial position. Therefore, a subsequent force is required at this time. At this time, the distance between the side walls of the two waist-shaped holes is to provide this force. The subsequent force and the restoring force of the energy storage mechanism 6 enable the second wheel disc 5 to rotate rapidly, achieving the rapid opening and closing effect of the moving contact 111. Second, at this time, the driving force is relatively large. Compared with the previous idling of the first wheel disc 4, more force is required at this time. Therefore, if the operator finds that he has made an error in operation, it can also play a rescue role. Moreover, here, the first wheel disc 4 and the second wheel disc 5 both rotate radially and do not move in the axial direction.

[0050] The energy storage mechanism 6 includes a first energy storage mechanism 61 and a second energy storage mechanism 62 .

[0051] The first energy storage mechanism 61 includes a first transmission rod 611. The top of the first transmission rod 611 is a U-shaped structure, that is, its top includes a first transverse portion 612, a first linkage portion 613 and a second linkage portion 614. The two ends of the first transverse portion 612 are respectively connected to the first linkage portion 613 and the second linkage portion 614. The other end of the first transmission rod 611 is a long first rod portion 615, and the first rod portion 615 is connected and fixed to the center of the first transverse portion 612. A first transmission pin 616 is provided on the U-shape. The first transmission pin 616 passes through the first waist-shaped hole 411 and the second waist-shaped hole 511, and the two ends are respectively connected and fixed to the first linkage portion 613 and the second linkage portion 614, so that the first wheel disc 4 and the second wheel disc 5 are located inside the U-shape. The first linkage portion 613 and the second linkage portion 614 are arranged in an arc shape, which makes the overall transmission more stable. It should be noted that a first guide surface 6121 is provided on the side of the first transverse portion 612 facing the U-shaped opening to prevent the two wheels from getting stuck with the transmission rod. The first guide surface 6121 is specifically a trapezoidal guide surface. A first chute 617 is provided on the first rod portion 615. The first chute 617 is a closed arrangement and is sleeved on the corresponding limit pin 32. The first rod portion 615 is also sleeved with a first reset member 618. The first reset member 618 is located between the limit pin 32 and the first transverse portion 612. The movement of the first transmission rod 611 drives the movement of the first chute 617, causing the first reset member 618 to be squeezed, creating an energy storage effect. It should be noted that the first return member 618 is a hard spring. During assembly, the first return member 618 does not abut against the first transverse portion 612 at one end and the stop pin 32 at the other end. Instead, it is sleeved onto the first rod portion 615. Under normal conditions, the first return member 618 is in a conventional state, with one end connected to the first transverse portion 612 and the other end not abutting against the stop pin 32. This arrangement prevents excessive squeezing, which could cause the first return member 618 to remain in a squeezed state for a long time, resulting in elastic fatigue and affecting actual use. Furthermore, during assembly, there is no need to squeeze the spring, reducing installation difficulty.

[0052] The top of the transmission rod is wrapped in a U-shape, which makes the overall transmission effect better. Moreover, the two wheels are located inside the U-shape, which plays a protective and guiding role. Compared with the existing technology, one wheel corresponds to two energy storage mechanisms 6, and two wheels correspond to four energy storage mechanisms 6, which has uneven force and unstable transmission. With this structure, only two energy storage mechanisms 6 are required, which has a simple structure, stable energy storage and easy installation.

[0053] The two energy storage mechanisms 6 have the same structure, but to better illustrate their structures, they are described separately below. The second energy storage mechanism 62 is equipped with a second transmission rod 621, a second transmission pin 622, and a second reset member 623. The second transmission rod 621 has the same structure as the first transmission rod 611, the second transmission pin 622 has the same fixing structure as the first transmission pin 616, and the second reset member 623 has the same structure as the first reset member 618, so they will not be described in detail.

[0054] The motor 8 is connected and fixed to the fixed plate 3 facing the first transmission shaft 7 through the reduction gear box 81. The output shaft of the motor 8 forms a linkage effect with the first transmission shaft 7 through the reduction gear box 81. The motor 8 drives the first transmission shaft 7 to rotate to achieve a manual-automatic integrated control effect. The output shaft of the motor 8 is arranged parallel to the first transmission shaft 7.

[0055] Furthermore, the reduction gearbox 81 is provided with at least two double gears 82 and a clutch mechanism. One of the double gears 82 includes an upper tooth portion 821 and a lower tooth portion 822. The upper tooth portion 821 and the lower tooth portion 822 are arranged concentrically and radially meshed, so that the upper tooth portion 821 and the lower tooth portion 822 form a linkage. The clutch mechanism includes a pull rod 83 and a third reset member 84. The third reset member 84 is mounted on the pull rod 83. The lower tooth portion 822 is located on the motion trajectory of the pull rod 83. One end of the pull rod 83 extends outside the reduction gearbox 81. By pulling the pull rod 83, the lower tooth portion 822 is separated from the upper tooth portion 821. At this time, the motor 8 and the first transmission shaft 7 are not linked. When the pulling force is released, the third reset member 84 resets, and the pull rod 83 returns to its initial position. The lower tooth portion 822 also has a self-reset effect. When the pulling force is released, the lower tooth portion 822 resets and re-engages with the upper tooth portion 821, forming a linkage effect. Furthermore, to enhance the clutching effect, a locking hole 831 is provided on the pull rod 83, and a locking member is passed through the locking hole 831 to achieve the locking effect after separation. With the arrangement of the clutch reduction gearbox 81, if the motor 8 fails or the gearbox becomes stuck, the first transmission shaft 7 can be separated from the motor 8 via the clutch mechanism, ensuring that manual operation is effortless.

[0056] Two microswitches 33 are provided on the fixed plate 3 facing the spindle 2. The microswitches 33 are used to control the rotation of the motor 8. An elastic limiting protrusion 121 is provided below the operating chamber 12. Specifically, the elastic limiting protrusion 121 comprises a fixing chamber 122 provided within the operating chamber 12, and a fourth return member 123 provided within the fixing chamber 122, giving the elastic limiting protrusion 121 an elastic effect. Here, the elastic limiting protrusion 121 is triangular in shape.

[0057] The portion of the main shaft 2 that extends into the operating chamber 12 is provided with a limit cam 9. The top of the limit cam 9 is triangular in shape, and two microswitches 33 are located on the motion trajectory of the top of the limit cam 9. This activates the microswitches 33, stopping the operation of the motor 8. The lower end of the limit cam 9 is provided with a first slot 91, a second slot 92, and a third slot 93. The first slot 91 is located between the second and third slots 92 and 93. When the elastic limit protrusion 121 extends into the first slot 91 to engage with the second slot 92, the switch is in the double-off state. When the elastic limit protrusion 121 extends into the second slot 92 to engage with the third slot 93, the switch is in the normal power state. When the elastic limit protrusion 121 extends into the third slot 93 to engage with the third slot 93, the switch is in the standby power state. The provision of the elastic limit protrusion 121 ensures three-point positioning: the double-off state and the standby power state, thereby ensuring the overall limiting effect and preventing excessive rotation.

[0058] The first transmission shaft 7, first wheel disc 4, second wheel disc 5, two energy storage mechanisms 6, motor 8, reduction gearbox 81, and two fixing plates 3 are modularly integrated. The modular configuration simplifies processing operations. Compared to the prior art, which requires individual components to be assembled within the entire housing 1, the structure of the present application only requires the main shaft 2 to be inserted into the second wheel disc 5 to achieve a linkage effect with the second wheel disc 5, and then connected to the transverse fixing portion 31 of the fixing plate 3 via bolts to achieve a fixed installation effect. Moreover, the modular configuration allows for faster assembly line processing speeds and reduces production difficulty.

[0059] Its specific working principle is as follows: Figure 6 The figure shows a schematic diagram of the structure in the double opening state. In order to better illustrate the structure of the movement, the figure uses a perspective view. At this time, the first transmission rod 611 and the second transmission rod 621 are at the lowest end. At this time, the first reset member 618 and the second reset member 623 are both in the normal state and are only mounted on the transmission rods.

[0060] When the external driving member (i.e., the handle) rotates in conjunction with the first transmission shaft 7, that is, when it rotates toward the right, the first wheel disc 4 is driven to rotate. At this time, the first waist-shaped hole 411 on the left side of the first wheel disc 4 drives the first transmission pin 616 to move. When the first wheel disc 4 rotates to the dead point of the first reset member 618, as shown in the attached figure, Figure 7 As shown, at this time, the first transmission pin 616 has not moved to the side wall of the second waist-shaped hole 511. In this state (the first wheel 4 is idling and the second wheel 5 is not moving), if the operator finds that he has made an error, he can cancel the operation without driving the main shaft 2 to move. Continue to turn the handle to make the first transmission pin 616 continue to move, so that it will abut against the second waist-shaped hole 511 on the second wheel 5. Figure 8As shown, at this time, due to the continuous force and the restoring force of the first reset member 618, the first transmission pin 616 moves quickly, driving the second wheel 5 to rotate, thereby achieving the effect of the main shaft 2 driving the moving contact 111 to move. When the rotation is completed, the elastic limiting protrusion 121 extends into the second slot 92 to cooperate with the main shaft 2 to limit excessive rotation of the main shaft 2. The upper limit cam 9 abuts against the corresponding micro switch 33, shutting down the movement of the motor 8. At this time, the first transmission shaft 7 cannot continue to rotate, achieving a double locking effect. After stopping, the first transmission pin 616 is located at the center of the first waist-shaped hole 411 and does not abut against the two sides of the first waist-shaped hole 411, ensuring that it also plays a clutch effect during the opening operation to prevent misoperation, as shown in the attached Figure 9 It should be noted that when the first transmission pin 616 continues to move and contacts the second waist-shaped hole 511 on the second wheel disc 5, the second transmission pin 622 on the other side moves in the same direction, driving the rotation. The trajectory of the movement is consistent with the length difference between the two waist-shaped holes, so it will not affect any deformation of the second reset member 623.

[0061] When the external driving member (i.e., the handle) moves in the opposite direction, due to the rotation of the first wheel disc 4, the first wheel disc 4 idles, so that the side wall of the first waist-shaped hole 411 abuts against the first transmission pin 616, driving the first transmission pin 616 to rotate, and at this time drives the first reset member 618 to continue to store energy. When it reaches the dead point of the first reset member 618, it continues to rotate in the opposite direction, so that the first transmission pin 616 abuts against the second waist-shaped hole 511, driving the second wheel disc to rotate. At this time, due to the continuous force and the restoring force of the first reset member 618, the first transmission pin 616 moves rapidly, driving the second wheel disc 5 to rotate to realize the double-opening state.

[0062] Continuing the reverse movement, the first wheel 4 rotates, causing the first waist-shaped hole 411 on the right to move, driving the second transmission pin 622 to rotate, thereby causing the second reset member 623 to store energy. When the second reset member 623 reaches the dead point after storing energy, it continues to rotate, causing the second transmission pin 622 to drive the second waist-shaped hole 511 to move, thereby achieving connection between the moving contact 111 and the static contact 112. The reverse movement is consistent with the movement toward the double opening state, so it will not be described in detail.

[0063] This structure provides an idling range in all three states: normal power, standby power, and double-open. This means that the first disc 4 idles and does not drive the second disc 5. This provides the operator with a preset range to prevent misoperation, thereby ensuring overall operational stability. Furthermore, the overall operating structure has fewer parts and adopts a modular design, making assembly more convenient.

Claims

1. An operating structure for a dual power transfer switch, comprising a main shaft with a moving contact and three sets of stationary contacts, characterized in that: The first and second wheels are connected to each other via the two energy storage mechanisms, and the first and second wheels are connected via the two energy storage mechanisms. The first and second wheels are connected via the two energy storage mechanisms, and the first and second wheels are connected via the two energy storage mechanisms. The first and second wheels are connected via the two energy storage mechanisms, and the first and second wheels are connected via the two energy storage mechanisms. The first and second wheels are connected via the two energy storage mechanisms. The first and second wheels are connected via the two energy storage mechanisms. The first and second wheels are connected via the two energy storage mechanisms. The first and second wheels are connected via the two energy storage mechanisms. It is a U-shaped structure, that is, its top includes a first horizontal part, a first linkage part and a second linkage part, and the two ends of the first horizontal part are respectively connected to the first linkage part and the second linkage part; the other end of the first transmission rod is a long first rod part, and the first rod part is connected and fixed to the center of the first horizontal part; a first transmission pin is provided on the U-shape, and the first transmission pin passes through the first waist-shaped hole and the second waist-shaped hole, and the two ends are respectively connected and fixed to the first linkage part and the second linkage part; a first slide groove is provided on the first rod part, and the first slide groove is a closed setting. The first slide groove is sleeved on the limit pin, and a first reset part is sleeved on the first rod part. The first reset part is located between the limit pin and the first horizontal part. During the assembly process, the first reset part is sleeved on the first rod part. In the normal state, the first reset part is in a normal state, one end is connected to the first horizontal part, and the other end does not resist the limit pin.

2. The operating structure of a dual power transfer switch according to claim 1, characterized in that: The length of the second waist-shaped hole is greater than that of the first waist-shaped hole.

3. The operating structure of a dual power transfer switch according to claim 1, characterized in that: The top end of the transmission rod is a U-shaped structure, and the first wheel disc and the second wheel disc extend into the top end of the transmission rod.

4. The operating structure of a dual power transfer switch according to claim 3, characterized in that: It also includes two parallel fixed plates, a limit pin is provided between the two fixed plates, a slide groove is provided on the transmission rod, the limit pin slides on the slide groove, a reset piece is sleeved on the transmission rod, and the other end of the reset piece is located on the motion track of the limit pin.

5. The operating structure of a dual power transfer switch according to claim 1, characterized in that: The first wheel disc is provided with a first fixing post, which is provided with a first fixing hole; the second wheel disc is provided with a second fixing post, which is provided with a second fixing hole, and the first fixing hole and the second fixing hole have different shapes.

6. The operating structure of a dual power transfer switch according to claim 1, characterized in that: It also includes a motor and a reduction gearbox. The motor is linked to one end of the reduction gearbox, and the first transmission shaft is linked to the other end of the reduction gearbox.

7. The operating structure of a dual power transfer switch according to claim 6, characterized in that: At least two duplex gears and a clutch mechanism are provided in the reduction gearbox. The duplex gears include an upper tooth portion and a lower tooth portion. The clutch mechanism separates the upper tooth portion from the lower tooth portion of one of the duplex gears.

8. The operating structure of a dual power transfer switch according to claim 1, characterized in that: A limit cam is sleeved on the main shaft, and corresponding micro switches are respectively provided on both sides of the limit cam.

9. The operating structure of a dual power transfer switch according to claim 1, characterized in that: The first transmission shaft, the first wheel disc, the second wheel disc and the two energy storage mechanisms are modularly integrated.

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