CN109712829B - Operating mechanism of automatic change-over switch - Google Patents
Operating mechanism of automatic change-over switch Download PDFInfo
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- CN109712829B CN109712829B CN201711006239.XA CN201711006239A CN109712829B CN 109712829 B CN109712829 B CN 109712829B CN 201711006239 A CN201711006239 A CN 201711006239A CN 109712829 B CN109712829 B CN 109712829B
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Abstract
An operating mechanism of an automatic change-over switch comprises an electromagnet system, a connecting rod and a transmission plate used for driving a moving contact of the automatic change-over switch, wherein the electromagnet system drives the transmission plate to rotate through the connecting rod, the operating mechanism moves in a first direction and crosses over a mechanism dead point position to enable a moving contact to be changed from the first position to a second position, the operating mechanism moves in a second direction and crosses over the mechanism dead point position to enable the moving contact to be changed from the second position to the first position, and the operating mechanism is characterized in that: the operating mechanism further includes a locking mechanism that prevents the operating mechanism from returning from the second direction past the mechanism dead center position after the operating mechanism has passed the mechanism dead center position from the first direction. The automatic transfer switch can effectively improve the reliability of the action of the automatic transfer switch, and is simple in structure and convenient to install.
Description
Technical Field
The invention belongs to the technical field of low-voltage electric appliances, and particularly relates to an operating mechanism of an automatic change-over switch.
Background
The automatic transfer switch is mainly used for monitoring power supply circuits and controlling the switching action to automatically transfer one or more load circuits from one power supply to another power supply, thereby ensuring the continuity of load power supply. As people have increasingly improved requirements for power supply continuity, the performance and reliability of the dual-power automatic transfer switch are increasingly emphasized by people. An automatic change-over switch adopting an excitation operating mechanism in the existing market mainly comprises an operating mechanism and a contact system, wherein the contact system comprises a moving contact and a first static contact and a second static contact which are respectively arranged at two sides of the moving contact; when the moving contact is located at the second position, the moving contact is closed by contacting with the second fixed contact, and the second power supply is switched on. The operating mechanism is internally provided with a positive and negative rotation rotating mechanism for driving the moving contact to act, the rotating mechanism is driven by a power source such as an electromagnet system, the moving process of the moving contact from the first position to the second position or the moving process of the moving contact from the second position to the first position is completed by the thrust force after the electromagnet is attracted and released and by the rotating inertia of an idle wheel (which can be arranged in the operating mechanism or on the moving contact or by the rotating wheel structure of the operating mechanism and the moving contact). The above-described operating mechanism generally has the following problems: after the mechanism utilizes inertia of the idler wheel to throw off dead point positions of the mechanism (the movable iron core, the connecting rod and the driving disk are positioned at a straight line position), because the movement speed of the idler wheel is high, the release speed of the electromagnet is low, the electromagnet is used for restraining the idler wheel, so that the idler wheel is suddenly stopped, and the idler wheel is reversely rotated under the action of impact force, so that the electromagnet cannot act according to the original track after being released, and finally, the switching on and switching off failure is caused, and the normal switching action cannot be completed.
Disclosure of Invention
The object of the present invention is to provide an operating mechanism for an automatic transfer switch, which can prevent the operating mechanism from returning from a second direction to a mechanism dead point position after the operating mechanism has passed the mechanism dead point position from a first direction, and which has a simple structure and improves the reliability of the operation of the automatic transfer switch.
The object of the invention is achieved in that the operating mechanism of an automatic transfer switch comprises an electromagnet system, a connecting rod and a transmission plate for driving a moving contact of the automatic transfer switch, wherein the electromagnet system drives the transmission plate to rotate through the connecting rod, the operating mechanism moves in a first direction and crosses over a mechanism dead point position to transfer the moving contact from the first position to a second position, the operating mechanism moves in a second direction and crosses over the mechanism dead point position to transfer the moving contact from the second position to the first position, and the operating mechanism further comprises a locking mechanism which prevents the operating mechanism from returning to the mechanism dead point position from the second direction after the operating mechanism crosses over the mechanism dead point position from the first direction.
In a specific embodiment of the invention, the locking mechanism comprises a first driving plate, a locking device and a spring, wherein the first driving plate and the transmission plate synchronously rotate, the first driving plate is provided with an action surface on the outer edge, the action surface comprises a stop surface, the locking device comprises a first locking shaft, the first locking shaft is pressed against the action surface under the action of the spring and acts along the action surface during the movement of the operating mechanism in the first direction, and after the operating mechanism crosses a mechanism dead point position from the first direction, the first locking shaft reaches a locking position matched with the stop surface to prevent the operating mechanism from returning to the mechanism dead point position from the second direction; during movement of the operating mechanism in the second direction, the first latch shaft is held in an unlocked position separated from the active surface by the spring.
In another embodiment of the invention, the active surface of the first drive plate is provided with a sliding surface and a support surface in sequence in a first direction of movement along the operating mechanism, wherein the radial distance of the sliding surface on the first drive plate is greater than the radial distance of the support surface on the first drive plate, and the aforementioned stop surface is located between the sliding surface and the support surface.
In yet another embodiment of the present invention, the action surface of the first driving plate is further provided with an unlocking surface, the sliding surface, the stop surface, the support surface and the unlocking surface are sequentially arranged in a first direction along the movement of the operating mechanism, and the unlocking surface is used for pushing the first locking shaft to move to an initial position where the first locking shaft is separated from the action surface and driving the first locking shaft to move to an unlocking position by the spring.
In a further embodiment of the present invention, the locking mechanism further includes a second driving plate, the second driving plate has the same structure as the first driving plate and is oppositely overlapped with the first driving plate in the opposite direction of the rotation center, the locking device further includes a second locking shaft which is arranged in parallel to the first locking shaft in a staggered manner, during the movement of the operating mechanism in the second direction, the second locking shaft presses the action surface on the second driving plate under the action of the spring and acts along the action surface, after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft reaches the locking position matched with the stop surface on the second driving plate, and the operating mechanism is prevented from returning to the mechanism dead point position from the first direction; during movement of the operating mechanism in the first direction, the second locking shaft is held in an unlocked position separated from the active surface on the second drive plate by the spring.
In a further embodiment of the invention, the locking mechanism further comprises a second active surface provided on the outer edge of the transmission plate, the second active surface being arranged in sequence in a second direction of movement along the operating mechanism: the radial distance of the second sliding surface on the transmission plate is greater than that of the second support surface on the transmission plate, and a second stop surface is formed between the second sliding surface and the second support surface; the locking device also comprises a second locking shaft which is arranged in a staggered manner and parallel to the first locking shaft, the second locking shaft presses the second action surface under the action of the spring and acts along the second action surface in the process of moving the operating mechanism in the second direction, and after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft reaches the locking position matched with the second stop surface to prevent the operating mechanism from returning to the mechanism dead point position from the first direction; the second unlocking surface is used for pushing the second locking shaft to move to an initial position where the second locking shaft is separated from the second action surface, and the spring drives the second locking shaft to move to an unlocking position; during movement of the operating mechanism in the first direction, the second locking shaft is held in an unlocked position separated from the second active surface by the spring.
In a more specific embodiment of the present invention, the locking device further includes a rotating spindle and a connecting plate, the first locking shaft and the second locking shaft are respectively disposed at two sides of the rotating spindle in the radial direction, and the first locking shaft and the second locking shaft are respectively fixed in two spaces partitioned by the connecting plate to form a crankshaft.
In yet another embodiment of the present invention, the operating mechanism further comprises a pair of fixing plates, and the rotation central shaft of the driving plate and the rotation central shaft of the locking device are pivotally mounted on the pair of fixing plates; one end of the spring is fixed relative to the fixing plate, the other end of the spring is hung on the first locking shaft or the second locking shaft, and two ends of the spring are located on two radial sides of the rotating mandrel.
In yet another embodiment of the present invention, the pair of fixing plates are fixedly connected by a fixing pin, and one end of the spring is fixedly connected to the fixing pin on the fixing plate.
In a further embodiment of the present invention, the driving plate rotates synchronously with the first driving plate through a connecting shaft and a rotating central shaft, one end of the connecting rod is connected with the electromagnet system, and the other end of the connecting rod is connected with the driving plate or the first driving plate.
The operating mechanism is provided with the locking mechanism, the locking mechanism prevents the operating mechanism from returning to the mechanism dead point position from the second direction after the operating mechanism crosses the mechanism dead point position from the first direction, and further prevents the operating mechanism from returning to the mechanism dead point position from the first direction after the operating mechanism crosses the mechanism dead point position from the second direction, so that the phenomenon that the operating mechanism is reversed to the dead point position after sudden stop can be effectively avoided, the reliability of the action of the automatic change-over switch is improved, and meanwhile, the locking mechanism is simple in structure and convenient to install.
Drawings
Fig. 1 is a schematic view of an operating mechanism of the automatic transfer switch of the present invention.
Fig. 2 is a schematic structural diagram of the first driving plate, the second driving plate and the driving plate according to the present invention.
Fig. 3 is a schematic structural diagram of the locking device according to the present invention.
Fig. 4a is a schematic view of a first drive plate of the present invention in an initial position.
Fig. 4b is a schematic diagram of the position of the first locking shaft engaged with the stop surface of the first driving plate according to the present invention.
Fig. 4c is a schematic view of the function position of the unlocking surface of the first driving plate according to the present invention.
Fig. 4d is a schematic diagram of the locking device according to the present invention in an inverted state.
Fig. 4e is a schematic diagram of the position of the second locking shaft engaged with the stop surface of the second driving plate according to the present invention.
Fig. 4f is a schematic view of the functional position of the unlocking surface of the second driving plate according to the present invention.
Fig. 4g is a schematic view of the locking device of the present invention returning to the initial position after being flipped over.
Fig. 5 is a schematic structural diagram of the automatic transfer switch according to the present invention.
Fig. 6 is a schematic view of the contact system of another embodiment of the operating mechanism of the present invention rotating from the first position to the second position.
Figure 7 is a schematic view of the contact system of the embodiment of figure 6 rotated from the second position to the first position.
Fig. 8 is a schematic structural diagram of a first driving plate, a second driving plate and a transmission plate of yet another embodiment of the operating mechanism according to the present invention.
In the figure: 1. the driving device comprises a first driving plate, a second driving plate, a first driving plate, a second driving; 2. the locking device comprises a locking device, 20, a rotating mandrel, 21, a first locking shaft, 22, a second locking shaft and 23, a connecting plate; 3. a spring; 4. a fixing plate 41, a fixing pin; 5. the locking mechanism comprises a transmission plate, 51, an output shaft, 52, a connecting shaft, 10 ', a second acting surface, 11 ', a second sliding surface, 12 ', a second stop surface, 13 ', a second support surface and 14 ', a second unlocking surface; 6. a driving disc 60, a driving disc rotation center 61, a first driving arm 62, a second driving arm 63 and a projection; 7. an electromagnet system, 71, a coil, 72, a movable iron core, 73, a static iron core; 8. a connecting rod; 9. the moving contact 91, the first static contact 92, the second static contact.
Detailed Description
So that the public can fully understand the technical spirit and the beneficial effects of the invention, the applicant will describe the detailed description of the specific embodiments of the invention in conjunction with the drawings, but the description of the embodiments is not a limitation of the technical solution, and any changes made according to the inventive concept without substantial changes should be considered as the protection scope of the invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position shown in fig. 1, and thus should not be construed as particularly limiting the technical solution provided by the present invention.
As shown in figures 1-3 and 5,
an automatic change-over switch comprises an operating mechanism and a contact system, wherein the contact system comprises a moving contact 9, and a first static contact 91 and a second static contact 92 which are respectively arranged at two sides of the moving contact 9; the operating mechanism comprises an electromagnet system 7, a connecting rod 8 and a transmission plate 5 used for driving a moving contact 9 of the automatic change-over switch, the electromagnet system 7 drives the transmission plate 5 to rotate through the connecting rod 8, the operating mechanism moves in a first direction and crosses over a mechanism dead point position to switch the moving contact 9 from a first position to a second position, the operating mechanism moves in a second direction and crosses over the mechanism dead point position to switch the moving contact 9 from the second position to the first position, the moving contact 9 is in contact with and closed with a first fixed contact 91 when located at the first position, the operating mechanism is in a first state, the moving contact 9 is in contact with and closed with a second fixed contact 92 when located at the second position, and the operating mechanism is in a second state. The operating direction of the operating mechanism from the first state to the second state is the first direction, and the operating direction of the operating mechanism from the second state to the first state is the second direction. When the coil 71 is energized, the movable core 72 moves toward the stationary core 73, and the link 8 is driven to move by the electromagnet system 7 as a power source.
The technical key points of the technical scheme provided by the invention are as follows: the operating mechanism further includes a locking mechanism that prevents the operating mechanism from returning from the second direction past the mechanism dead center position after the operating mechanism has passed the mechanism dead center position from the first direction.
The locking mechanism comprises a first driving plate 1, a locking device 2 and a spring 3 which synchronously rotate with a transmission plate 5, an acting surface 10 is arranged on the outer edge of the first driving plate 1, the acting surface 10 comprises a stopping surface 12, and the locking device 2 comprises a first locking shaft 21. When the operating mechanism moves in the first direction, the first locking shaft 21 is pressed against the action surface 10 under the action of the spring 3 and acts along the action surface 10, and after the operating mechanism crosses the mechanism dead point position from the first direction, the first locking shaft 21 reaches a locking position matched with the stop surface 12 to prevent the operating mechanism from returning to the mechanism dead point position from the second direction; during movement of the operating mechanism in the second direction, the first locking shaft 21 is held in an unlocked position separated from the active surface 10 by the spring 3.
The action surface 10 is provided with a sliding surface 11 and a supporting surface 13 in sequence in a first direction of movement along the operating mechanism, wherein the radial distance of the sliding surface 11 on the first driving plate 1 is greater than the radial distance of the supporting surface 13 on the first driving plate 1, and the stop surface 12 is located between the sliding surface 11 and the supporting surface 13.
The action surface 10 is further provided with an unlocking surface 14, the sliding surface 11, the stop surface 12, the support surface 13 and the unlocking surface 14 are sequentially arranged in the first direction of movement along the operating mechanism, and the unlocking surface 14 is used for pushing the first locking shaft 21 to move to the initial position where the first locking shaft 21 is separated from the action surface 10 and driving the first locking shaft 21 to move to the unlocking position by the spring 3.
The first locking shaft 21 is mounted on the operating mechanism in the axial direction of the first drive plate 1, and is held in a pressed state with the action surface 10 or in an unlocked position or moved from the state of pressing the action surface 10 to the unlocked position by the action of the spring 3.
Preferably, the locking mechanism of the present invention further includes a second driving plate 1 ', the second driving plate 1' has the same structure as the first driving plate 1 and is oppositely overlapped with the first driving plate 1, the locking device 2 further includes a second locking shaft 22 which is offset parallel to the first locking shaft 21, during the movement of the operating mechanism in the second direction, the second locking shaft 22 presses the action surface 10 on the second driving plate 1 'under the action of the spring 3 and acts along the action surface 10, after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft 22 reaches the locking position which is matched with the stop surface 12 on the second driving plate 1', and the operating mechanism is prevented from returning to the mechanism dead point position from the first direction; during movement of the operating mechanism in the first direction, the second locking shaft 22 is held in an unlocked position, separated from the active surface 10 of the second drive plate 1', by the action of the spring 3.
Naturally, the arrangement of the locking mechanism of the present invention is not limited to the above-mentioned manner, and instead of providing the second driving plate 1 ', a second active surface 10 ' may be provided on the outer edge of the driving plate 5, on the basis of the first driving plate 1, said second active surface 10 ' being arranged in the following order in the second direction of movement along the operating mechanism: a second sliding surface 11 ', a second stop surface 12 ', a second support surface 13 ' and a second unlocking surface 14 ', wherein the radial distance of the second sliding surface 11 ' on the transmission plate 5 is greater than the radial distance of the second support surface 13 ' on the transmission plate 5, and a second stop surface 12 ' is formed between the second sliding surface 11 ' and the second support surface 13 '. During the movement of the operating mechanism in the second direction, the second locking shaft 22 presses the second acting surface 10 ' under the action of the spring 3 and acts along the second acting surface 10 ', and after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft 22 reaches a locking position matched with the second stop surface 12 ', so that the operating mechanism is prevented from returning to the mechanism dead point position from the first direction; the second unlocking surface 14 'is used for pushing the second locking shaft 22 to move to an initial position where the second locking shaft 22 is separated from the second action surface 10', and the spring 3 drives the second locking shaft 22 to move to an unlocking position; during movement of the operating mechanism in the first direction, the second locking shaft 22 is held in an unlocked position, separated from the second active surface 10', by the action of the spring 3.
The locking device 2 further comprises a rotating mandrel 20 and a connecting plate 23, wherein a first locking shaft 21 and a second locking shaft 22 are respectively arranged on two radial sides of the rotating mandrel 20, and the first locking shaft 21 and the second locking shaft 22 are respectively fixed in two spaces formed by the connecting plate 23 to form a crankshaft.
The operating mechanism further comprises a pair of fixing plates 4, the fixing plates 4 are fixedly connected through fixing pins 41, the rotating central shafts 15 of the first driving plate 1 and the second driving plate 1' and the rotating mandrel 20 of the locking device 2 are both pivoted on the fixing plates 4, one end of the spring 3 is fixedly connected with the fixing pins 41 on the fixing plates 4, the other end of the spring is hung on the first locking shaft 21 or the second locking shaft 22, and two ends of the spring 3 are located on two radial sides of the rotating mandrel 20.
In the above embodiment of the present invention, the driving plate 5 realizes synchronous rotation with the first driving plate 1 through the connecting shaft 52 and the rotation central shaft 15, the movable iron core 72 is connected with one end of the connecting rod 8 through a connecting device, the other end of the connecting rod 8 is connected with any one of the first driving plate 1, the second driving plate 1 'or the driving plate 5 through a connecting device, the connecting device may be a hinged structure, that is, the movable iron core 72 is hinged with one end of the connecting rod 8, and the other end of the connecting rod 8 is hinged with any one of the first driving plate 1, the second driving plate 1' or the driving plate 5; the connecting device may also be a structure composed of a sliding slot and a hinge shaft moving in the sliding slot, that is, the sliding slot is formed on the movable iron core 72, the hinge shaft is fixed at one end of the connecting rod 8, so that the connecting rod 8 and the movable iron core 72 can slide and rotate relatively, the positions of the sliding slot and the hinge shaft can be interchanged, that is, the hinge shaft is fixed on the movable iron core 72, the sliding slot is formed at one end of the connecting rod 8, the connecting device can be arranged at the other end of the connecting rod 8 and any one of the first driving plate 1, the second driving plate 1 'or the driving plate 5, so that the connecting rod 8 and any one of the first driving plate 1, the second driving plate 1' or the driving plate 5 can slide and rotate relatively, of course, the connecting device. The transmission plate 5 is connected with the movable contact 9 through the output shaft 51, so that the movable contact 9 is driven to rotate between the first position and the second position through the electromagnet system 7, the connecting rod 8 and the transmission plate 5. The dead point position of the mechanism is a rod body formed by the movable iron core 72, the connecting rod 8, the transmission plate 5 or the rotating mandrel 15 of the first driving plate 1 or the second driving plate 1' and the connecting point of the connecting rod 8, and the three are positioned in a straight line. Of course, the movable contact 9 may be disposed on the same rotation center shaft 15 as the driving plate 5, or the movable contact 9 may be disposed integrally with the driving plate 5, and the first driving plate 1 and the second driving plate 1' are also disposed on the rotation center shaft 15.
The movement process is shown in fig. 4a to 4f, the first locking shaft 21 is abutted against the sliding surface 11 of the first driving plate 1 under the action of the tension spring 3, and the second locking shaft 22 is separated from the second driving plate 1' in the unlocking position, as shown in fig. 4 a. When the electromagnet system 7 drives the first driving plate 1 to move, the first driving plate 1 performs counterclockwise rotation motion, that is, the operating mechanism moves in the first direction, so that the first locking shaft 21 slides along the sliding surface 11 during the process of driving the movable contact 9 to rotate from the first position to the second position. After the first driving plate 1 rotates by a certain angle, when the operating mechanism crosses a mechanism dead point position (the three rod bodies formed by the hinge point of the movable iron core 72, the connecting rod 8, and the connecting rod 8 from the first driving plate 1 to the rotation center of the first driving plate 1 are located at a straight line position), the first locking shaft 21 falls into the stop surface 12 under the action of the tension spring 3, and the first locking shaft 21 reaches a locking position, as shown in fig. 4b, the first driving plate 1 is prevented from rotating reversely, so that the operating mechanism is prevented from returning to the mechanism dead point position from the second direction, at this time, the second locking shaft 22 and the second driving plate 1' are still in a separation state, and the second locking shaft 22 is in an unlocking position. The power source output shaft continues to drive the first driving plate 1 to rotate in the counterclockwise direction, the first locking shaft 21 transits along the supporting surface 13 on the first driving plate 1 to the unlocking surface 14, the unlocking surface 14 drives the first locking shaft 21, the locking device 2 goes over the dead point position of the locking device (the first locking shaft 21, the rotating mandrel 20 and the spring 3 are positioned on a straight line), so that the first lock shaft 21 is moved to the initial position where the first lock shaft 21 is separated from the action surface 10, i.e. the initial position at which the first locking shaft 21 starts its disengagement stroke from the active surface 10, as shown in figure 4c, so that the tension spring 3 pulls the locking device 2 to rotate clockwise around the rotation central axis 20, so as to realize the turnover, the first locking shaft 21 is separated from the first driving plate 1, the first locking shaft 21 moves to the unlocking position, and the second locking shaft 22 abuts against the sliding surface 11 of the second driving plate 1', as shown in fig. 4 d. At this point, the movable contact 9 reaches the second position of contact closure with the second stationary contact.
The operation mechanism moves in the second direction, that is, in the process that the moving contact 9 is driven by the electromagnet system to move from the second position to the first position, the first driving plate 1 and the second driving plate 1' are the reverse movement process of the above process, and like the above, as shown in fig. 4e-4 g.
The locking mechanism of the invention may comprise only the first drive plate 1, achieving that the operating mechanism is prevented from returning to the mechanism's dead centre position in the second direction only during the movement of the operating mechanism in the first direction and past the mechanism's dead centre position, causing the moving contacts 9 to switch from the first position to the second position. Furthermore, the locking mechanism is also provided with a second drive plate 1' for preventing the operating mechanism from returning to the mechanism dead center position in the first direction after the operating mechanism has moved in the second direction beyond the mechanism dead center position in the process of shifting the operating mechanism in the first direction beyond the mechanism dead center position to shift the moving contact 9 from the second position to the first position.
The first driving plate 1 or the second driving plate 1' can be one piece, but in the preferred embodiment, since the power source output shaft is connected with the first driving plate 1, in order to ensure the reliability of the connection transmission, the first driving plate 1 is formed by overlapping two identical parts at a certain interval, therefore, the length of the first locking shaft 21 is larger than that of the second locking shaft 22, and the space between the two first driving plates 1 is used for preventing the spring 3 from generating interference during the movement.
The locking mechanism of the present invention may also be arranged without the second driving plate 1 ', and on the basis of the first driving plate 1, a second acting surface 10 ' is arranged on the outer edge of the driving plate 5, as shown in fig. 8, and the second acting surface 10 ' is arranged in the second direction of the movement of the operating mechanism in sequence: a second sliding surface 11 ', a second stop surface 12 ', a second support surface 13 ' and a second unlocking surface 14 ', wherein the radial distance of the second sliding surface 11 ' on the transmission plate 5 is greater than the radial distance of the second support surface 13 ' on the transmission plate 5, and a second stop surface 12 ' is formed between the second sliding surface 11 ' and the second support surface 13 '. During the movement of the operating mechanism in the second direction, the second locking shaft 22 presses the second acting surface 10 ' under the action of the spring 3 and acts along the second acting surface 10 ', and after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft 22 reaches a locking position matched with the second stop surface 12 ', so that the operating mechanism is prevented from returning to the mechanism dead point position from the first direction; the second unlocking surface 14 'is used for pushing the second locking shaft 22 to move to an initial position where the second locking shaft 22 is separated from the second action surface 10', and the spring 3 drives the second locking shaft 22 to move to an unlocking position; during movement of the operating mechanism in the first direction, the second locking shaft 22 is held in an unlocked position, separated from the second active surface 10', by the action of the spring 3.
The lock mechanism of the present invention is not limited to the above-described embodiment. Referring to fig. 6 and 7, another embodiment of the locking mechanism of the present invention includes a driving disc 6 rotating synchronously with the transmission plate, a locking device 2 and a spring 3, the driving disc 6 has a rotation center 60, a protrusion 63 is disposed on an outer contour surface of the driving disc 6, a connection point of the rotation center 60 of the driving disc 6 and the connecting rod 8 forms a first driving arm 61, a second driving arm 62 is formed between the rotation center 60 and the protrusion 63, the locking device 2 is a locking member, the cross section of the locking device is substantially triangular, two side edges of the triangle are arc-shaped and respectively matched with the protrusion 63, the bottom is connected with one end of the spring 3, and the other end of the spring 3 is fixed. When the operating mechanism moves in the first direction, the electromagnet system drives the moving contact to move from the first position to the second position, as shown in fig. 6, the driving disc rotates anticlockwise, the locking device 2 is under the action of the spring 3, the arc-shaped right side wall of the locking device is matched with the protrusion 63, the operating mechanism is prevented from returning to the mechanism dead point position from the second direction, and the driving disc is prevented from reversing; similarly, when the operating mechanism moves in the second direction, that is, the driving disc rotates clockwise, the electromagnet system drives the moving contact to move from the second position to the first position, and the left side wall of the locking device 2 is matched with the protrusion 63 under the action of the spring 3, so that the operating mechanism is prevented from returning to the dead point position of the mechanism from the first direction, and the driving disc 6 is prevented from reversing.
Claims (9)
1. An operating mechanism of an automatic transfer switch comprises an electromagnet system (7), a connecting rod (8) and a transmission plate (5) for driving a moving contact (9) of the automatic transfer switch, wherein the electromagnet system (7) drives the transmission plate (5) to rotate through the connecting rod (8), the operating mechanism moves in a first direction and crosses over a mechanism dead point position to enable the moving contact (9) to be transferred from the first position to a second position, the operating mechanism moves in a second direction and crosses over the mechanism dead point position to enable the moving contact (9) to be transferred from the second position to the first position, the operating mechanism further comprises a locking mechanism, the locking mechanism prevents the operating mechanism from returning to the mechanism dead point position from the second direction after the operating mechanism crosses over the mechanism dead point position from the first direction, and the locking mechanism is characterized by comprising a first driving plate (1) and a second driving plate (5) which synchronously rotate, The locking device (2) and the spring (3), the action surface (10) is arranged on the outer edge of the first driving plate (1), the action surface (10) comprises a stop surface (12), the locking device (2) comprises a first locking shaft (21), the first locking shaft (21) presses the action surface (10) under the action of the spring (3) and acts along the action surface (10) in the process of moving the operating mechanism in the first direction, after the operating mechanism crosses the mechanism dead point position from the first direction, the first locking shaft (21) reaches the locking position matched with the stop surface (12), and the operating mechanism is prevented from returning to the mechanism dead point position from the second direction; during the movement of the operating mechanism in the second direction, the first locking shaft (21) is held in an unlocked position separated from the active surface (10) by the spring (3).
2. An operating mechanism for an automatic transfer switch according to claim 1, characterized in that the active surface (10) of said first driving plate (1) is provided with a sliding surface (11) and a support surface (13) in succession in a first direction of movement along the operating mechanism, wherein the radial distance of the sliding surface (11) on the first driving plate (1) is greater than the radial distance of the support surface (13) on the first driving plate (1), and in that said stop surface (12) is located between said sliding surface (11) and the support surface (13).
3. The operating mechanism of an automatic transfer switch according to claim 2, characterized in that the action surface (10) of the first driving plate (1) is further provided with an unlocking surface (14), the sliding surface (11), the stop surface (12), the support surface (13) and the unlocking surface (14) are sequentially arranged in a first direction along the movement of the operating mechanism, and the unlocking surface (14) is used for pushing the first locking shaft (21) to move to an initial position where the first locking shaft (21) is separated from the action surface (10) and driving the first locking shaft (21) to move to an unlocking position by the spring (3).
4. An operating mechanism for an automatic transfer switch according to claim 3, characterized in that said locking mechanism further comprises a second driving plate (1'), the second driving plate (1') and the first driving plate (1) have the same structure and are oppositely superposed with the rotation center, the locking device (2) also comprises a second locking shaft (22) which is arranged in a staggered way and is parallel to the first locking shaft (21), and when the operating mechanism moves in a second direction, the second locking shaft (22) presses the action surface (10) on the second driving plate (1') under the action of the spring (3) and acts along the action surface (10), after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft (22) reaches a locking position cooperating with a stop surface (12) on the second driving plate (1') to prevent the operating mechanism from returning from the first direction to the mechanism dead point position; during the movement of the operating mechanism in the first direction, the second locking shaft (22) is held in an unlocking position separated from the active surface (10) on the second drive plate (1') by the spring (3).
5. An operating mechanism for an automatic transfer switch according to claim 3, characterized in that the locking mechanism further comprises a second active surface (10 ') provided on the outer edge of the transmission plate (5), said second active surface (10') being arranged in succession in a second direction of movement along the operating mechanism: a second sliding surface (11 '), a second stop surface (12 '), a second support surface (13 ') and a second unlocking surface (14 '), wherein the radial distance of the second sliding surface (11 ') on the transmission plate (5) is greater than the radial distance of the second support surface (13 ') on the transmission plate (5), and a second stop surface (12 ') is formed between the second sliding surface (11 ') and the second support surface (13 '); the locking device (2) further comprises a second locking shaft (22) which is arranged in a staggered manner and parallel to the first locking shaft (21), in the process that the operating mechanism moves in the second direction, the second locking shaft (22) presses the second action surface (10 ') under the action of the spring (3) and acts along the second action surface (10 '), and after the operating mechanism crosses the mechanism dead point position from the second direction, the second locking shaft (22) reaches a locking position matched with the second stop surface (12 ') to prevent the operating mechanism from returning to the mechanism dead point position from the first direction; the second unlocking surface (14 ') is used for pushing the second locking shaft (22) to move to an initial position where the second locking shaft (22) is separated from the second action surface (10'), and the spring (3) drives the second locking shaft (22) to move to an unlocking position; during movement of the operating mechanism in the first direction, the second locking shaft (22) is held in an unlocked position separated from the second active surface (10') by the spring (3).
6. An operating mechanism of an automatic transfer switch according to claim 4 or 5, characterized in that the locking device (2) further comprises a rotating spindle (20) and a connecting plate (23), the first locking shaft (21) and the second locking shaft (22) are respectively arranged at two sides of the rotating spindle (20) in the radial direction, and the first locking shaft (21) and the second locking shaft (22) are respectively fixed in two spaces partitioned by the connecting plate (23) to form a crank shaft.
7. The operating mechanism of an automatic transfer switch according to claim 6, wherein said operating mechanism further comprises a pair of fixing plates (4), said rotation center shaft (15) of said driving plate (5), said rotation center shaft (20) of said locking means (2) being pivotally mounted on said pair of fixing plates (4); one end of the spring (3) is fixed relative to the fixing plate (4), the other end of the spring is hung on the first locking shaft (21) or the second locking shaft (22), and two ends of the spring (3) are located on two radial sides of the rotating mandrel (20).
8. The operating mechanism of an automatic transfer switch according to claim 7, wherein the pair of fixed plates (4) are fixedly connected by a fixing pin (41), and one end of the spring (3) is fixedly connected to the fixing pin (41) of the fixed plate (4).
9. The operating mechanism of an automatic transfer switch according to claim 7, characterized in that the driving plate (5) rotates synchronously with the first driving plate through the connecting shaft (52) and the rotation center shaft (15), one end of the connecting rod (8) is connected with the electromagnet system (7), and the other end is connected with the driving plate (5) or the first driving plate (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711006239.XA CN109712829B (en) | 2017-10-25 | 2017-10-25 | Operating mechanism of automatic change-over switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711006239.XA CN109712829B (en) | 2017-10-25 | 2017-10-25 | Operating mechanism of automatic change-over switch |
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| CN109712829A CN109712829A (en) | 2019-05-03 |
| CN109712829B true CN109712829B (en) | 2020-03-20 |
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| CN201711006239.XA Active CN109712829B (en) | 2017-10-25 | 2017-10-25 | Operating mechanism of automatic change-over switch |
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| CN113161197B (en) * | 2021-04-12 | 2022-04-26 | 四川九洲电器集团有限责任公司 | Universal inertial switch with adjustable threshold value and closing method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6015959A (en) * | 1998-10-30 | 2000-01-18 | Eaton Corporation | Molded case electric power switches with cam driven, spring powered open and close mechanism |
| US6437269B1 (en) * | 2001-08-07 | 2002-08-20 | Eaton Corporation | Spring powered electrical switching apparatus with anti-rollover cam |
| CN1710688A (en) * | 2005-06-22 | 2005-12-21 | 上海电器科学研究所（集团）有限公司 | Automatic change-over switch electric mechanism |
| CN104576118A (en) * | 2015-01-15 | 2015-04-29 | 博耳(宜兴)电力成套有限公司 | Three-station switch switching and interlocking device |
| CN106449205A (en) * | 2015-08-04 | 2017-02-22 | 浙江正泰电器股份有限公司 | Circuit breaker energy storage assembly |
| CN106558433A (en) * | 2015-09-28 | 2017-04-05 | 施耐德电气工业公司 | Dual-power transfer switch and its mechanical interlock mechanism |
| CN106653422A (en) * | 2017-01-04 | 2017-05-10 | 柏法瑞电气（厦门）有限公司 | Reversing apparatus applied to conversion switch |
| CN206225224U (en) * | 2016-09-18 | 2017-06-06 | 施耐德电气工业公司 | Dual-power transfer switch and the mechanism for it |
-
2017
- 2017-10-25 CN CN201711006239.XA patent/CN109712829B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6015959A (en) * | 1998-10-30 | 2000-01-18 | Eaton Corporation | Molded case electric power switches with cam driven, spring powered open and close mechanism |
| US6437269B1 (en) * | 2001-08-07 | 2002-08-20 | Eaton Corporation | Spring powered electrical switching apparatus with anti-rollover cam |
| CN1710688A (en) * | 2005-06-22 | 2005-12-21 | 上海电器科学研究所（集团）有限公司 | Automatic change-over switch electric mechanism |
| CN104576118A (en) * | 2015-01-15 | 2015-04-29 | 博耳(宜兴)电力成套有限公司 | Three-station switch switching and interlocking device |
| CN106449205A (en) * | 2015-08-04 | 2017-02-22 | 浙江正泰电器股份有限公司 | Circuit breaker energy storage assembly |
| CN106558433A (en) * | 2015-09-28 | 2017-04-05 | 施耐德电气工业公司 | Dual-power transfer switch and its mechanical interlock mechanism |
| CN206225224U (en) * | 2016-09-18 | 2017-06-06 | 施耐德电气工业公司 | Dual-power transfer switch and the mechanism for it |
| CN106653422A (en) * | 2017-01-04 | 2017-05-10 | 柏法瑞电气（厦门）有限公司 | Reversing apparatus applied to conversion switch |
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| CN109712829A (en) | 2019-05-03 |
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