Novel electromagnetic operating mechanism and manual opening mechanism

Abstract

The invention relates to the field of electrical equipment, in particular to a novel electromagnetic operating mechanism and a manual opening mechanism. The spring operating mechanism aims at solving the problem that a spring operating mechanism in an existing circuit breaker can generate large noise when working. Comprising a shell; the frame is arranged in the shell in a sliding manner, a coil is wound on the frame, and a control terminal electrically connected with the coil is fixedly connected in the shell; the fixed frame is fixedly connected in the shell and is fixedly connected with a permanent magnet, the frame is provided with an operating rod, the operating rod penetrates through the fixed frame and the shell and is in sliding connection with the fixed frame and the shell, and the operating rod moves to be used for driving a circuit breaker to carry out switching-on and switching-off operation. The position of the wire frame is controlled by combining electromagnetic force with the magnetic field of the permanent magnet and controlling the magnitude and the direction of the current of the coil, so that the opening and closing operation of the circuit breaker is quicker and more stable, the noise generated by the working of the device is reduced, and the modern environmental protection requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical equipment, in particular to a novel electromagnetic operating mechanism and a manual opening mechanism. BACKGROUND

[0002] In modern power systems, circuit breakers are critical safety devices used to protect electrical circuits from overload and short-circuit faults. However, traditional spring operating mechanisms have many problems in circuit breaker operation, limiting their performance and reliability. Specifically, the traditional spring operating mechanism has a large number of components and a complex structure, which not only increases the cost of production, installation and maintenance, but also easily leads to frequent failures. In addition, the spring is prone to fatigue and deformation after long-term use, further affecting the reliability and service life of the mechanism. At the same time, the spring operating mechanism produces a large noise during operation, which does not meet modern environmental protection requirements and also adversely affects the working environment. Moreover, the existing manual opening mechanism also has many shortcomings, such as low transmission efficiency, poor precision, non-compact structure, and inaccurate signal feedback, which cannot meet the demand of modern electrical equipment for high efficiency and intelligent control.

[0003] Specifically, these problems include: 1. High cost and complexity: The traditional spring operating mechanism has a large number of components and a complex structure, resulting in high production, installation and maintenance costs, and is prone to failure.

[0004] 2. Reduced reliability: The spring material is prone to fatigue and deformation during long-term use, affecting the overall reliability and service life of the mechanism.

[0005] 3. Noise pollution: The spring operating mechanism produces a large noise during operation, which does not meet modern environmental standards and is not conducive to creating a good working environment. SUMMARY

[0006] In order to overcome the problems raised in the background art, the present application provides a novel electromagnetic operating mechanism and a manual opening mechanism.

[0007] The technical solution is as follows: A novel electromagnetic operating mechanism, comprising: a housing; a frame slidingly arranged in the housing, a coil being wound around the frame, and a control terminal being fixedly connected to the coil in the housing; a fixed frame fixedly connected to the housing and having a permanent magnet fixedly connected thereto, the frame being provided with an operating rod, the operating rod penetrating the fixed frame and the housing and being slidingly connected thereto, and the operating rod being movable to drive the circuit breaker to perform closing and opening operations.

[0008] As preferred, an iron core is arranged on the frame, and the coil is spirally wound on the iron core of the frame, so as to enhance the magnetic field strength generated by the coil.

[0009] As preferred, a first elastic ring is arranged on the shell, a second elastic ring is arranged on the fixed frame, and the frame is located between the first elastic ring and the second elastic ring, so as to buffer the frame.

[0010] As preferred, the device further comprises: A fixed plate is fixedly connected to the shell. A first sliding frame is slidably arranged on the fixed plate, and a first elastic member is arranged between the first sliding frame and the fixed plate. A fixed frame is fixedly connected to the operating rod, and the first sliding frame is used to limit the fixed frame.

[0011] As preferred, the device further comprises: A fixed sleeve is fixedly connected to the frame, and the fixed sleeve and the frame are slidably connected to the operating rod. A second elastic member is arranged between the fixed sleeve and the fixed frame. A fixed block is fixedly connected to the fixed sleeve, the first sliding frame is provided with an inclined surface and a horizontal surface, the horizontal surface of the first sliding frame is used to limit the movement of the fixed frame, and the fixed block is used to press the first sliding frame.

[0012] As preferred, the device further comprises: A first fixed shell is fixedly connected to the fixed frame, and a liquid medium is stored in the first fixed shell. A first sliding push rod is slidably arranged in the first fixed shell, the first sliding push rod is provided with a circular hole, a third elastic member is arranged between the first sliding push rod and the first fixed shell, and the first sliding push rod is used to limit the movement of the frame.

[0013] A novel manual opening mechanism based on the novel electromagnetic operating mechanism comprises: A second fixed shell is fixedly connected to the shell. A first transmission member is rotatably arranged on the second fixed shell. A second transmission member is rotatably arranged in the second fixed shell, and the second transmission member is in transmission connection with the first transmission member. A third transmission member is rotatably arranged in the second fixed shell, and the third transmission member is in transmission connection with the second transmission member. A rotating shaft is arranged on the third transmission member, and the rotating shaft is in rotation connection with the second fixed shell. A spur gear fixed on the rotating shaft; A sliding sleeve fixed on the frame and penetrating the fixed frame and the housing and sliding with both, the sliding sleeve is provided with a rack engaged with the spur gear.

[0014] As a preferred, the first transmission member, the second transmission member and the third transmission member constitute a reduction planetary gear set for increasing the output torque.

[0015] As a preferred, further comprising: A spline rod slidingly arranged in the first transmission member, the rotating shaft is in contact with the third transmission member, and the spline rod is limitingly and slidingly connected with the third transmission member, the rotating shaft is provided with a limiting hole, the limiting hole of the rotating shaft is spline-connected with the spline rod for power transmission between them, the rotating shaft is provided with an L-shaped hole in communication with the limiting hole thereon, the second fixed housing is provided with an annular groove in communication with the L-shaped hole; A conduit fixed on the second fixed housing and in communication with the annular groove; A liquid storage shell fixed on the second fixed housing and fixedly connected and communicated with the conduit, the liquid storage shell, the conduit, the annular groove, the L-shaped hole and the limiting hole of the rotating shaft are all filled with liquid medium; A second sliding push rod slidingly arranged in the liquid storage shell and provided with a fourth elastic member mounted between the second sliding push rod and the liquid storage shell.

[0016] As a preferred, the housing is slidingly provided with a second sliding frame, the second sliding frame is provided with a conductive sheet, the conductive sheet on the second sliding frame is electrically connected with the control terminal through a wire, the second sliding frame is provided with a guide slot, and the second sliding push rod is located in the guide slot of the second sliding frame; A power terminal installed on the housing and in contact with the conductive sheet on the second sliding frame.

[0017] The beneficial effects are that: the application combines electromagnetic force with permanent magnet magnetic field, controls the current size and direction in the coil through the electronic control system, realizes the control of the wire frame position, makes the breaker opening and closing operation more rapid and stable, reduces the noise generated by the device work, makes it meet the modern environmental protection requirements; the reduction planetary gear set composed of the first transmission member, the second transmission member and the third transmission member realizes efficient and accurate power transmission, which is convenient for the operator to easily drive the device and complete the opening operation; in the manual opening operation process, the deformation of the second elastic member is combined to store power, the operating rod is quickly moved downward, the opening process is quickly completed, and the arc time is reduced; the movement of the first sliding frame and the operating rod is buffered by the liquid in the first fixed shell, the mechanical vibration of the device is reduced, and the service life of the device is prolonged; the movement of the second sliding frame ensures that the electronic control system cannot control the device to operate in the manual opening operation process, thereby ensuring the safety of the manual opening operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the application; Figure 2 It is a schematic diagram of the three-dimensional structure of the shell and the operating rod of the application; Figure 3 It is a schematic diagram of the three-dimensional structure in the shell of the application; Figure 4 It is a sectional view of the shell and the frame of the application; Figure 5 It is a schematic diagram of the three-dimensional structure of the first sliding frame and the fixed block of the application; Figure 6 It is a sectional view of the fixed frame and the first fixed shell of the application; Figure 7 It is a sectional view of the second fixed shell and the rotating shaft of the application; Figure 8 It is a sectional view of the first transmission member and the rotating shaft of the application; Figure 9 It is a schematic diagram of the three-dimensional structure of the control terminal and the second sliding frame of the application; Figure 10 It is a schematic diagram of the structure of the second sliding push rod and the second sliding frame of the application.

[0019] Explanation of the accompanying drawings: 1. shell, 2. frame, 3. coil, 4. control terminal, 5. fixed frame, 6. permanent magnet, 7. operating rod, 8. first elastic ring, 9. second elastic ring, 10. fixed plate, 12. first sliding frame, 13. first elastic member, 14. fixed frame, 15. fixed sleeve, 16. second elastic member, 17. fixed block, 18. first fixed shell, 19. first sliding push rod, 20. third elastic member, 21. second fixed shell, 22. first transmission member, 23. second transmission member, 24. third transmission member, 25. rotating shaft, 26. spur gear, 27. sliding sleeve, 28. spline rod, 29. L-shaped hole, 30. annular groove, 31. conduit, 32. liquid storage shell, 33. second sliding push rod, 34. fourth elastic member, 35. second sliding frame, 36. power terminal. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0021] Example 1: A new electromagnetic operating mechanism, such as Figures 1-4 As shown, it includes: a shell 1; a frame 2, which is slidably arranged in the shell 1, a coil 3 is wound on the frame 2, and a control terminal 4 electrically connected to the coil 3 is fixed in the shell 1; a fixed frame 5, which is fixed in the shell 1 and is fixed with a permanent magnet 6, and the frame 2 is provided with an operating rod 7, which penetrates the fixed frame 5 and the shell 1 and is slidably connected to the two, and the movement of the operating rod 7 is used to drive the circuit breaker to close and open the switch; an iron core is provided on the frame 2, and the coil 3 is spirally wound on the iron core of the frame 2, and the iron core of the frame 2 is used to enhance the magnetic field strength generated by the coil 3; a first elastic ring 8 is installed on the shell 1, and a second elastic ring 9 is installed on the fixed frame 5, and the frame 2 is located between the first elastic ring 8 and the second elastic ring 9, and the first elastic ring 8 and the second elastic ring 9 are both used to buffer the frame 2.

[0022] In the above scheme, there are four permanent magnets 6, and the coil 3 has four spiral parts. The four spiral parts of the coil 3 are respectively facing the four permanent magnets 6. This electromagnetic operating mechanism is a partial structure in the circuit breaker. Figure 1To illustrate the overall structure of the circuit breaker, the control terminal 4 is located in the electronic control system. The device can be equipped with corresponding sensors according to actual needs to display the closed and open states of the device differently. The permanent magnet 6 is made of a permanent magnetic material with high strength, high magnetic energy product, and good temperature stability (such as neodymium iron boron). Its shape and size are designed according to the magnetic field requirements of the electromagnetic mechanism. It is fixed in a suitable position and provides a basic stable magnetic field for the entire mechanism. The coil 3 is wound with high-temperature resistant enameled wire with excellent insulation properties. The number of turns and wire diameter are determined by factors such as the required electromagnetic force and response speed. A changing magnetic field is generated by changes in current, which cooperates with the magnetic field of the permanent magnet 6 to control the movement of the frame 2. The first elastic ring 8 and the second elastic ring 9 are both made of rubber. In the initial state, the permanent magnet 6 is attracted to the iron core on the frame 2.

[0023] Specific working principle: First assemble the device onto the circuit breaker (as shown in the attached Figure 1 (As shown in the middle state), when the circuit breaker needs to be closed, the operator presses the closing switch on the control terminal 4. The control terminal 4 then passes a current of a specific direction and magnitude into the coil 3. In the bias magnetic field provided by the permanent magnet 6, the current-carrying coil 3 is acted upon by the Lorentz force, driving the coil 3 and the frame 2 upward (the direction is determined by the relative relationship between the current direction and the magnetic field). The upward movement of the frame 2 drives the operating rod 7 upward together. The upward movement of the operating rod 7 triggers the circuit breaker contacts to close the circuit breaker. Subsequently, the coil 3 remains energized to keep the circuit breaker in the closed state. During the upward movement of the frame 2, the first elastic ring 8 provides buffering protection for the frame 2, preventing it from being hit by hard collisions, thereby extending its service life.

[0024] When the circuit breaker needs to be opened, the operator presses the opening switch on the control terminal 4, and then the control terminal 4 passes a current of a specific direction and magnitude into the coil 3 (the current direction at this time is opposite to the current direction when the circuit breaker is closed). Then the frame 2 will repeat the above reverse operation to reset, putting the circuit breaker in the open state and cutting off the circuit. During this process, the second elastic ring 9 provides buffering protection for the frame 2.

[0025] During the entire opening and closing process, the electronic control system in the control terminal 4 uses sensors (existing technology, shown in the figure) to monitor parameters such as the position of the moving iron core (the object position is monitored by a photoelectric sensor) and the speed (the object speed is monitored by a laser ranging sensor) in real time, and adjusts the current in the electromagnetic coil 3 to ensure fast and smooth operation, avoid adverse phenomena such as contact bounce and excessive impact, and ensure reliable operation of the circuit breaker.

[0026] Compared with traditional spring operating mechanisms, the above structural features greatly reduce the number of parts and simplify the overall structure. This device eliminates complex spring components, numerous connecting rods and other vulnerable parts, improves mechanical reliability, reduces the probability of failure, and significantly extends the service life. The electromagnetic drive method significantly reduces the noise generated.

[0027] Example 2: Based on Example 1, Figures 2-5 As shown, it also includes: a fixed plate 10, fixed to the shell 1; a first sliding frame 12, slidably arranged on the fixed plate 10, and a first elastic member 13 is installed between the fixed plate 10; a fixed frame 14, fixed to the operating rod 7, and the first sliding frame 12 is used to limit the fixed frame 14; a fixed sleeve 15, fixed to the frame 2, and the fixed sleeve 15 and the frame 2 are both slidably connected to the operating rod 7; a second elastic member 16, installed between the fixed sleeve 15 and the fixed frame 14; a fixed block 17, fixed to the fixed sleeve 15, the first sliding frame 12 is provided with an inclined surface and a horizontal surface, the horizontal surface of the first sliding frame 12 is used to limit the movement of the fixed frame 14, and the fixed block 17 is used to squeeze the first sliding frame 12.

[0028] In the above scheme, the number of fixed plates 10, the number of first sliding frames 12 and the number of fixed blocks 17 are all two, the number of first elastic members 13 is four, and the two first elastic members 13 are sleeved on the same first sliding frame 12 (the above numbers are the actual numbers in the drawings, where the two first sliding frames 12 are used to keep the fixed frame 14 horizontal. Under actual demand conditions, the fixed plates 10, the first sliding frames 12 and other parts can be set to any number), the first elastic member 13 is a spring, the second elastic member 16 is a tension spring, and the fixed block 17 squeezes the first sliding frame 12 so that the horizontal surface of the first sliding frame 12 is out of contact with the fixed frame 14. The side of the fixed block 17 away from the fixed sleeve 15 gradually approaches the fixed sleeve 15 from the middle to the two ends.

[0029] Specific working principle: during the above closing operation, the frame 2 drives the fixed frame 14 and the operating rod 7 to move up together through the fixed sleeve 15 and the second elastic element 16, wherein the fixed block 17 moves up to extrude the inclined surface of the first sliding frame 12 to move, the two first sliding frames 12 move away and simultaneously compress the adjacent first elastic element 13, after the fixed block 17 passes through the first sliding frame 12, the operating rod 7 continues to move up to make the fixed frame 14 contact the inclined surface of the first sliding frame 12, the subsequent operating rod 7 drives the fixed frame 14 to pass through the first sliding frame 12, the first sliding frame 12 repeats the above reciprocating movement, finally the operating rod 7 stops moving, and the horizontal surface of the first sliding frame 12 contacts the lower surface of the fixed frame 14, the operating rod 7 is in the limiting state, and the operating rod 7 remains in the position of the closed state, the control terminal 4 stops passing current into the coil 3, the closing operation is completed, and then the current is stopped passing into the coil 3, under the mechanical limiting action, the device has a more stable and reliable working state.

[0030] When the opening operation is needed, the operator presses the opening switch on the control terminal 4, wherein the above operation is repeated, and since the first sliding frame 12 limits the movement of the fixed frame 14 at this time, the frame 2 moves down to drive the fixed sleeve 15 to move down, the fixed sleeve 15 moves down to stretch the second elastic element 16, when the fixed sleeve 15 drives the fixed block 17 to pass through the first sliding frame 12, the first sliding frame 12 is extruded to move, and the movement of the first sliding frame 12 releases the limitation of the fixed frame 14, and then the fixed frame 14 drives the operating rod 7 to quickly move down under the stretching action of the required elastic force of the second elastic element 16, the operating rod 7 quickly moves to complete the opening operation of the circuit breaker, the circuit breaker is quickly and completely opened with less energy, the arc time is reduced, and the response speed of the device is improved.

[0031] Example 3: based on example 2, as shown in Figure 4 and Figure 6 a first fixed shell 18 is further included, which is fixed to the fixed frame 5, and the first fixed shell 18 stores a liquid medium; a first sliding push rod 19 is slidably arranged in the first fixed shell 18, the first sliding push rod 19 is provided with a circular hole, and a third elastic element 20 is arranged between the first sliding push rod 19 and the first fixed shell 18, and the first sliding push rod 19 is used to limit the movement of the frame 2.

[0032] In the above scheme, the number of the first fixed shell 18, the first sliding push rod 19 and the third elastic element 20 is four, the third elastic element 20 is a spring, the upper end of the first sliding push rod 19 is provided with a rubber pad, and the attraction of the four permanent magnets 6 to the frame 2 is greater than the sum of the elastic forces of the four third elastic elements 20 in the compressed state, so that the frame 2 keeps in contact with the second elastic ring 9 in the opening state.

[0033] Specific working principle: during the opening operation, the fixed frame 14 drives the operating rod 7 to move downward quickly, the fixed frame 14 moves downward through the second elastic element 16, the fixed sleeve 15 and the frame 2 to move downward quickly, the frame 2 first contacts the first sliding push rod 19, wherein the first sliding push rod 19 is slowly moved downward and compresses the third elastic element 20 under the obstruction of the liquid medium in the first fixed shell 18, in this process, the impact force of the first sliding push rod 19 on the frame 2 is buffered, further reducing the noise generated by the device, at the same time, the liquid medium in the first fixed shell 18 weakens the vibration generated by the impact force, reducing the mechanical vibration of the device, indirectly prolonging the service life of the device.

[0034] Based on example 3, as shown in Figure 2 、 Figure 3 and Figure 7 , the application also provides a new type of manual opening mechanism based on the above-mentioned new type of electromagnetic operating mechanism, comprising: a second fixed shell 21 fixedly connected to the shell 1; a first transmission member 22 rotatably arranged on the second fixed shell 21; a second transmission member 23 rotatably arranged in the second fixed shell 21, the second transmission member 23 being in transmission connection with the first transmission member 22; a third transmission member 24 rotatably arranged in the second fixed shell 21, the third transmission member 24 being in transmission connection with the second transmission member 23; a rotating shaft 25 arranged on the third transmission member 24, and the rotating shaft 25 being in rotational connection with the second fixed shell 21; a straight gear 26 fixedly connected to the rotating shaft 25; a sliding sleeve 27 fixedly connected to the frame 2, and penetrating through the fixed frame 5 and the shell 1 and being in sliding connection with both, the sliding sleeve 27 being provided with a rack in meshing connection with the straight gear 26; the first transmission member 22, the second transmission member 23 and the third transmission member 24 forming a reduction planetary gear set for increasing the output torque.

[0035] In the above scheme, the right part of the first transmission member 22 is provided with a rectangular hole, the rectangular hole of the first transmission member 22 is used for connecting a crank (prior art), the setting of the reduction planetary gear set can realize larger transmission ratio and torque output in smaller space, and the transmission is stable, low noise, and the increase of the transmission torque facilitates the operation personnel to easily operate the manual opening mechanism, at the same time, the integrated setting makes the structure more compact and small, facilitating installation and maintenance in the limited space of various electrical equipment, and in cooperation with the deformation of the second elastic element 16 during the opening process, the operating rod 7 still maintains quick downward movement during the manual opening process, and the opening operation is quickly completed.

[0036] As shown in Figure 3 and Figure 8As shown, it also includes: a spline rod 28, which is slidably arranged in the first transmission member 22, the rotating shaft 25 contacts the third transmission member 24, and the spline rod 28 is limitedly slidably connected to the third transmission member 24, the rotating shaft 25 is provided with a limited hole, the limited hole of the rotating shaft 25 and the spline rod 28 are spline-connected for power transmission therebetween, the rotating shaft 25 is provided with an L-shaped hole 29 communicating with its upper limit hole, and the second fixed shell 21 is provided with an annular groove 30 communicating with the L-shaped hole 29; a conduit 31, which is fixedly connected to the second fixed shell 21 and communicated with the annular groove 30; a liquid storage shell 32, which is fixedly connected to the second fixed shell 21 and fixedly connected and communicated with the conduit 31, and the liquid storage shell 32, the conduit 31, the annular groove 30, the L-shaped hole 29 and the limiting hole of the rotating shaft 25 are all filled with liquid medium; a second sliding push rod 33, which is slidably arranged in the liquid storage shell 32, and a fourth elastic member 34 is installed between the second sliding push rod 33 and the liquid storage shell 32.

[0037] In the above scheme, the spline rod 28 is provided with two sets of spline grooves. The smooth rod part of the spline rod 28 slides in a sealed manner with the rotating shaft 25 (the sealing performance can be improved by installing a sealing ring). The spline rod 28 is inserted into the limiting hole of the rotating shaft 25. The spline connection between the two enables the spline rod 28 to drive the rotating shaft 25 to rotate together during the rotation. The fourth elastic member 34 is a spring, and the fourth elastic member 34 is always in a compressed state. In the initial state, the spline rod 28 is not fully inserted into the limiting hole of the rotating shaft 25. At this time, the rotation of the rotating shaft 25 cannot drive the spline rod 28 to rotate, so that the reduction planetary gear set will not work during the opening and closing operation of the electromagnetic operating mechanism, thereby extending its service life.

[0038] like Figure 7 、 Figure 9 and Figure 10 As shown, the housing 1 is slidably provided with a second sliding frame 35, the second sliding frame 35 is provided with a conductive sheet, the conductive sheet on the second sliding frame 35 is electrically connected to the control terminal 4 through a wire, the second sliding frame 35 is provided with a guide groove, and the second sliding push rod 33 is located in the guide groove of the second sliding frame 35; the power terminal 36 is installed on the housing 1 and contacts the conductive sheet on the second sliding frame 35.

[0039] In the above scheme, the guide groove on the second sliding frame 35 is tilted backward from left to right (with the Figure 10 Taking the direction in as an example), the use of manual opening operation may be due to a failure of the control terminal 4, which makes the electronic control system unable to perform the opening operation through the electromagnetic operating mechanism. With the use of the manual opening mechanism, the second sliding frame 35 moves so that the conductive sheet on it is out of contact with the power terminal 36, avoiding the impact of the manual opening operation after the electronic control system is restored, thereby improving the safety of the manual opening operation.

[0040] Specific working principle: when the control terminal 4 fails and needs to be manually tripped, the operator holds the crank (prior art) and inserts it into the first transmission member 22. The crank first squeezes the spline rod 28 to move backward, and the spline rod 28 moves backward and is inserted into the limiting hole of the rotating shaft 25. At this time, the spline rod 28 is in a fixed state relative to the rotating shaft 25. The spline rod 28 moves while the liquid in the limiting hole enters the liquid storage shell 32 through the L-shaped hole 29, the annular groove 30 and the conduit 31, and squeezes the second sliding push rod 33 to move. The second sliding push rod 33 moves to compress the fourth elastic member 34. The second sliding push rod 33 moves to squeeze the guide groove of the second sliding bracket 35 to move it to the left. The movement of the second sliding bracket 35 will make the conductive sheet on it disengage from the electrical connection with the power supply end 36, completely disconnecting the control of the electronic control system on the device, ensuring the safety of manual control.

[0041] After the spline rod 28 moves backward and is inserted into the limiting hole of the rotating shaft 25, the operator rotates the handheld crank, which drives the first transmission member 22 to rotate. The first transmission member 22 moves the sliding sleeve 27 and the frame 2 downward through the second transmission member 23, the third transmission member 24, the spline rod 28, the rotating shaft 25 and the straight gear 26 and the rack, and repeats the above operation. The second elastic member 16 is still deformed to store energy to ensure that the operating rod 7 moves downward quickly during manual tripping operation, and the tripping operation of the circuit breaker is completed quickly. After the manual tripping operation is completed, the operator pulls out the crank. Under the elastic action of the fourth elastic member 34, the above opposite movement is performed, and finally the spline rod 28 and the second sliding bracket 35 are reset. After maintenance of the device is completed, if electrically operated closing and tripping operation is needed, the above operation is repeated.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A new electromagnetic operating mechanism, characterized by comprising: Housing (1); A frame (2) is slidably arranged in the housing (1); a coil (3) is wound around the frame (2); and a control terminal (4) electrically connected to the coil (3) is fixedly connected in the housing (1); A fixed frame (5) is fixed in the housing (1) and is fixed with a permanent magnet (6). The frame (2) is provided with an operating rod (7). The operating rod (7) penetrates the fixed frame (5) and the housing (1) and is slidably connected to the two. The operating rod (7) moves to drive the circuit breaker to perform closing and opening operations.

2. A novel electromagnetic operating mechanism according to claim 1, characterized in that: An iron core is provided on the frame (2), and the coil (3) is spirally wound on the iron core of the frame (2). The iron core of the frame (2) is used to enhance the intensity of the magnetic field generated by the coil (3).

3. A novel electromagnetic operating mechanism according to claim 2, characterized in that: The housing (1) is installed with a first elastic ring (8), the fixing frame (5) is installed with a second elastic ring (9), the frame (2) is located between the first elastic ring (8) and the second elastic ring (9), and the first elastic ring (8) and the second elastic ring (9) are both used to buffer the frame (2).

4. A novel electromagnetic operating mechanism according to claim 3, characterized in that: Also included are: A fixing plate (10) fixedly connected to the housing (1); A first sliding frame (12) is slidably disposed on the fixed plate (10), and a first elastic member (13) is installed between the first sliding frame and the fixed plate (10); The fixed frame (14) is fixedly connected to the operating rod (7), and the first sliding frame (12) is used to limit the fixed frame (14).

5. A novel electromagnetic operating mechanism according to claim 4, characterized in that: Also included are: A fixed sleeve (15) is fixedly connected to the frame (2), and the fixed sleeve (15) and the frame (2) are both slidably connected to the operating rod (7); A second elastic member (16) is installed between the fixing sleeve (15) and the fixing frame (14); A fixed block (17) is fixedly connected to the fixed sleeve (15); the first sliding frame (12) is provided with an inclined surface and a horizontal surface; the horizontal surface of the first sliding frame (12) is used to limit the movement of the fixed frame (14); and the fixed block (17) is used to squeeze the first sliding frame (12).

6. A novel electromagnetic operating mechanism according to claim 5, characterized in that: Also included are: A first fixed shell (18) is fixedly connected to the fixed frame (5), and a liquid medium is stored in the first fixed shell (18); A first sliding push rod (19) is slidably arranged in the first fixed shell (18), a circular hole is provided in the first sliding push rod (19), a third elastic member (20) is installed between the first sliding push rod (19) and the first fixed shell (18), and the first sliding push rod (19) is used to limit the movement of the frame (2).

7. A new manual opening mechanism, according to the new electromagnetic operating mechanism of claim 6, characterized in that: Includes: A second fixed shell (21) is fixedly connected to the housing (1); A first transmission member (22) is rotatably mounted on the second fixed shell (21); A second transmission member (23) is rotatably disposed in the second fixed shell (21), and the second transmission member (23) is transmission-connected to the first transmission member (22); a third transmission member (24) rotatably disposed in the second fixed housing (21), the third transmission member (24) being in transmission connection with the second transmission member (23); A rotating shaft (25) is provided on the third transmission member (24), and the rotating shaft (25) is rotatably connected to the second fixed shell (21); a spur gear (26) fixedly connected to the rotating shaft (25); A sliding sleeve (27) is fixed to the frame (2), penetrates the fixed frame (5) and the housing (1) and slides with the two, and the sliding sleeve (27) is provided with a rack meshing with the spur gear (26).

8. A new manual opening mechanism according to claim 7, characterized in that: The first transmission member (22), the second transmission member (23) and the third transmission member (24) form a reduction planetary gear set for increasing output torque.

9. A new manual opening mechanism according to claim 8, characterized in that: Also included are: A spline rod (28) is slidably arranged in the first transmission member (22), the rotating shaft (25) contacts the third transmission member (24), and the spline rod (28) is slidingly connected to the third transmission member (24), the rotating shaft (25) is provided with a limiting hole, the limiting hole of the rotating shaft (25) and the spline rod (28) are spline-connected for power transmission therebetween, the rotating shaft (25) is provided with an L-shaped hole (29) communicating with its upper limit hole, and the second fixed housing (21) is provided with an annular groove (30) communicating with the L-shaped hole (29); a conduit (31) fixedly connected to the second fixed shell (21) and communicating with the annular groove (30); a liquid storage shell (32) fixedly connected to the second fixed shell (21) and fixedly connected to and communicated with the conduit (31); the liquid storage shell (32), the conduit (31), the annular groove (30), the L-shaped hole (29) and the limiting hole of the rotating shaft (25) are all filled with liquid medium; The second sliding push rod (33) is slidably disposed in the liquid storage shell (32), and a fourth elastic member (34) is installed between the second sliding push rod and the liquid storage shell (32).

10. A new manual opening mechanism according to claim 9, characterized in that: The housing (1) is slidably provided with a second sliding frame (35), the second sliding frame (35) is provided with a conductive sheet, the conductive sheet on the second sliding frame (35) is electrically connected to the control terminal (4) via a wire, the second sliding frame (35) is provided with a guide groove, and the second sliding push rod (33) is located in the guide groove of the second sliding frame (35); The power supply terminal (36) is mounted on the housing (1) and contacts the conductive sheet on the second sliding frame (35).

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