Magnetic control driving device with manual operation function and working method thereof

Abstract

The embodiment of the present application relates to a kind of magnetic control drive device with manual operation function and its working method, the device includes bottom shell, bottom plate and top shell;The bottom shell is fixedly installed on bottom plate, top shell is connected with bottom shell each other;Magnetic control drive mechanism main body, magnetic control drive internal mechanism and magnetic control drive upper mechanism are arranged between the bottom shell, bottom plate and top shell.The technical scheme provided by the embodiment of the present application, using modular design, can be installed and disassembled independently from low-voltage switch, does not affect other mechanisms in other low-voltage switches when disassembling, can realize the on-site replacement maintenance of magnetic control drive mechanism.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of low-voltage switch, in particular to a magnetic control driving device with manual operation function and a working method thereof. BACKGROUND

[0002] Low-voltage switches are widely used in power distribution networks, photovoltaic, new energy vehicle charging piles, and electrical complete sets. There are hundreds of millions of production worldwide every year. With the digital transformation reform of the power grid, new demands are put forward for low-voltage switches, which need to achieve fast switching, modular design, longer life, and on-site replacement of parts. The existing low-voltage switch operating driving mechanism is spring type, mostly connecting rod mechanism, which is easy to wear and has low service life. The traditional spring type operating driving mechanism cannot achieve fast electric closing, and the whole closing time is more than 20 seconds, which is slow in response speed and cannot meet the demand of the digital transformation development strategy of the power grid industry.

[0003] The traditional low-voltage switch operating driving mechanism is spring type, Figure 1 The existing low-voltage switch spring type operating driving mechanism is shown in the figure, and the spring type operating driving mechanism has manual operation and motor operation. Manual operation is achieved by manually pulling the handle, but when the current is large, the pulling force required is large, which is inconvenient to use. Electric operation is achieved by motor driving, but the speed of motor transmission is slow. Under electric operation, closing takes more than 20 seconds, and opening takes about 15 milliseconds. This seriously affects the immediacy of switch operation. The spring type operating structure is composed of multiple sheet metal parts and connecting rods, and the driving mechanism is two tension springs, which are easy to wear during use. The service life is about 8000 times, and it fails at about 20000 times, which cannot be used normally. The existing spring type operating driving mechanism and low-voltage switch have complex installation connection, the operating driving mechanism cannot be independently assembled and disassembled from the low-voltage switch, and cannot meet the demand of low-voltage switch modularization application. Moreover, the existing spring type operating mechanism has complex structure and is easy to wear, with mechanical life of about 20,000 times, low service life, and cannot achieve fast electric closing, which cannot make the switch respond immediately. The operating mechanism is closely connected with other mechanisms of the switch body, and the disassembly and installation process is complex, which needs to be installed or disassembled together with other parts, cannot be disassembled or installed without affecting other mechanisms, and cannot meet the increasing intelligent, convenient and high-performance demand of low-voltage switches. SUMMARY

[0004] Based on the above problems of the prior art, the purpose of the embodiment of the present application is to provide a magnetic control driving device with manual operation function and a working method thereof, which adopts modular design, can realize fast and automatic operation, manual operation, improves the overall performance of the switch, and can meet the demand of various working conditions.

[0005] To achieve the above object, according to one aspect of the present application, a magnetic control driving device with manual operation function is provided, comprising a bottom shell 1, a bottom plate 4 and a top shell 2; the bottom shell 1 is fixedly installed on the bottom plate 4, and the top shell 2 is connected with the bottom shell 1;

[0006] A magnetic control driving mechanism main body, a magnetic control driving internal mechanism and a magnetic control driving upper mechanism are arranged between the bottom shell 1, the bottom plate 4 and the top shell 2;

[0007] The magnetic control driving internal mechanism comprises a static iron core 27, a coil 28, a dynamic iron core 29, an upper pressing plate 30 and a spring 31;

[0008] The static iron core 27 and the coil 28 are concentrically and fixedly arranged on the bottom plate 4;

[0009] The dynamic iron core 29 is arranged above the static iron core 27 and is concentric with the static iron core 27;

[0010] The static iron core 27 and the dynamic iron core 29 are hollow columnar structures, and the coil 28 is sleeved in the inside of the static iron core 27 and the dynamic iron core 29;

[0011] The upper pressing plate 30 is arranged at the upper part of the dynamic iron core 29;

[0012] The spring 31 is surrounded and limited by the dynamic iron core 29 and the static iron core 27, and is coaxial with the dynamic iron core 29 and the static iron core 27; when the static iron core 27 and the dynamic iron core 29 are separated, the length of the spring 31 is elongated; when the static iron core 27 and the dynamic iron core 29 are closed, the length of the spring 31 is compressed.

[0013] Further, the magnetic control driving mechanism main body comprises a top plate 6, a protective cover 7, guide columns 8, a first support 9, a second support 10, a third support 11, a crank arm 12, a guide seat 13 and a guide rod 14;

[0014] The guide rod 14 is arranged at the innermost part of the magnetic control driving mechanism main body, and sequentially passes through the bottom plate 4, the static iron core 27, the coil 28, the dynamic iron core 29, the upper pressing plate 30, the top plate 6 and the guide seat 13;

[0015] The front side of the top plate 6 is connected with the first support 9 and the second support 10, and the rear side of the top plate 6 is installed with the third support 11;

[0016] The guide columns 8 are four, and the four guide columns 8 are installed on the bottom plate 4 and the top plate 6 and are wrapped by the protective cover 7;

[0017] The crank arm 12 is fixed on the third support 11.

[0018] Further, the magnetic control driving upper mechanism comprises a first micro switch 15, a second micro switch 16, a third micro switch 17, a first pin shaft 18, a second pin shaft 19 and a third pin shaft 20;

[0019] The first micro switch 15, the second micro switch 16 and the third micro switch 17 are arranged between the first support 9 and the second support 10 and are fixed by the first pin shaft 18 and the second pin shaft 19;

[0020] The first pin shaft 18 and the second pin shaft 19 respectively pass through the first support 9, the second micro switch 16, the third micro switch 17, the first micro switch 15 and the second support 10;

[0021] The crank arm 12 is fixed to the third support 11 by the third pin shaft 20.

[0022] Further, the device further comprises a cap 3,

[0023] The cap 3 is mounted on the crank arm 12, and the bottom end is internally provided with a rectangular recess which can be clamped into the crank arm 12;

[0024] The bottom of the rectangular recess has three holes, two of which are through holes, and the middle hole is a blind hole.

[0025] Further, the device can further be provided with an auxiliary operation handle 26;

[0026] The auxiliary operation handle 26 is inserted into the middle through hole of the cap 3 and the crank arm 12, and the cap 3 and the crank arm 12 are controlled to swing by swinging the auxiliary operation handle 26.

[0027] According to another aspect of the present application, a working method of the device according to the first aspect of the present application is provided, and the working method comprises electric closing operation, electric opening operation, manual closing operation and manual opening operation.

[0028] Further, the electric closing operation comprises:

[0029] Receiving a closing instruction;

[0030] The closing instruction is transmitted to the terminal 5 mounted on the bottom plate 4, and then transmitted to the coil 28, so that the coil 28 obtains a positive direction, the moving iron core 29 and the static iron core 27 generate a magnetic force, the moving iron core 29 moves downward, and then drives the upper pressing plate 30, the guide seat 13 and the guide rod 14 to move downward, and the moving iron core 29 compresses the spring 31 downward, when the moving iron core 29 and the static iron core 27 are closed, the spring 31 is in a limit compression state, and the two rectangular through holes in the guide rod 14 reach the lowermost position, thereby driving the contactor in the switch to close.

[0031] Further, the electric opening operation comprises:

[0032] Receiving the opening instruction;

[0033] The opening instruction is transmitted to the terminal 5 installed on the bottom plate 4, and then transmitted to the coil 28. The coil 28 obtains reverse electricity, disturbs the internal magnetic field of the moving iron core 29 and the static iron core 27, and makes the moving iron core 29 and the static iron core 27 lose magnetism. The spring 31 in the limit compression state is released from the restraint of the iron core magnetic force, and the spring 31 rebounds, so that the moving iron core 29 moves upward, and in turn drives the upper pressing plate 30, the guide seat 13 and the guide rod 14 to move upward, until the upper pressing plate 30 touches the top plate 6, thereby limiting the spring 31, and the spring 31 no longer rebounds upward, and the moving iron core 29 and the static iron core 27 are in the open state, and the two rectangular through holes in the guide rod 14 are in the uppermost position, thereby driving the contactor in the switch to open.

[0034] Further, the manual opening operation includes:

[0035] The cap 3 is pulled by hand, when the pulling force overcomes the holding magnetic force of the moving iron core 29 and the static iron core 27, the cap 3 drives the toggle arm 12 to swing relative to the third support 11, with the third pin shaft 20 as the center, so that the two pins on the toggle arm 12 swing towards the micro switch, thereby driving the guide seat 13 to move upward, and in turn driving the upper pressing plate 30 and the moving iron core 29 to move upward, and the spring 31 is released from the suppression of the magnetic force and rebounds quickly, accelerating the moving iron core 29 away from the static iron core 27, and finally making the upper pressing plate 30 touch the top plate 6, to realize manual opening.

[0036] Further, the manual closing operation includes:

[0037] The cap 3 is pulled by hand, when the pulling force overcomes the compression force of the spring 31, the cap 3 drives the toggle arm 12 to swing relative to the third support 11, with the third pin shaft 20 as the center, so that the two pins on the toggle arm 12 swing towards the micro switch, thereby driving the guide seat 13 to move downward, and in turn driving the upper pressing plate 30 and the moving iron core 29 to move downward, until the moving iron core 29 and the static iron core 27 contact each other, and the spring 31 is compressed to the limit position. The spring of the third micro switch 17 is pressed by the guide seat 13, and the micro switch sends a closing position signal, and after the low-voltage switch receives the position signal information, a weak electric stimulus is sent, so that the closed moving iron core 29 and the static iron core 27 are magnetized instantaneously, thereby making the moving iron core 29 and the static iron core 27 keep closed, to realize manual closing.

[0038] In summary, the embodiment of the application provides a magnetic control driving device with a manual operation function and a working method thereof. The device includes a bottom shell, a bottom plate and a top shell. The bottom shell is fixedly installed on the bottom plate, and the top shell is connected with the bottom shell. A magnetic control driving mechanism main body, a magnetic control driving internal mechanism and a magnetic control driving upper mechanism are arranged between the bottom shell, the bottom plate and the top shell. The technical scheme provided by the embodiment of the application has the following beneficial technical effects:

[0039] The magnetic control driving device adopts a modular design, can be installed and detached independently of the low-voltage switch, does not affect other mechanisms in the low-voltage switch during disassembly and assembly, and can realize on-site replacement and maintenance of the magnetic control driving mechanism. A manual opening and closing device is designed to meet the manual opening and closing requirements of the switch, so that the switch can still be used in some harsh scenes, thereby widening the use range of the switch. Compared with the traditional spring type operation driving mechanism, the magnetic control driving device provided in the embodiment of the application has fewer components, a simple structure, a long service life, and can be replaced on site, thereby improving the overall service life of the low-voltage switch, and the service life can reach 100,000 times. The magnetic control driving mechanism can realize electric fast closing, and the closing operation time of the traditional spring type operation driving mechanism is improved from 20 seconds to less than 10 milliseconds. The electric opening speed of the magnetic control driving mechanism is also improved compared with the traditional spring type operation driving mechanism, and the opening operation time is less than 4 milliseconds. The magnetic control driving mechanism greatly improves the response speed of the low-voltage switch and improves the use performance of the product. The terminal is fixedly arranged relative to the magnetic control driving mechanism, and can be automatically installed and plugged with other modules, thereby improving the assembly efficiency. The square top shell structure is designed to facilitate the grabbing of the mechanical hand and improve the installation efficiency of the automatic assembly of the magnetic control driving mechanism. The auxiliary operation handle is designed to improve the torque and reduce the acting force, increase the lever ratio during force transmission, and facilitate the operation of workers. The guide seat structure can realize the triggering of the closing signal and the opening signal, the fixing of the connecting guide rod, and the guidance of the iron core, integrates the use space, leaves more space for the low-voltage switch to prevent other components, and improves the space utilization rate of the entire switch. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic view of the existing spring type operation driving mechanism of the low-voltage switch;

[0041] Figure 2 is an external schematic view of the magnetic control driving device in the embodiment of the application;

[0042] Figure 3 is a schematic view of the main body of the magnetic control driving mechanism in the embodiment of the application;

[0043] Figure 4 is a structural schematic view of the top plate in the embodiment of the application;

[0044] Figure 5 is a schematic view of the upper magnetic control driving mechanism in the embodiment of the application;

[0045] Figure 6 is a structural schematic view of the crank arm in the embodiment of the application;

[0046] Figure 7 is a structural schematic view of the cap in the embodiment of the application;

[0047] Figure 8 is a schematic diagram of the internal mechanism of the magnetic control drive of the embodiment of the present application;

[0048] Figure 9 is a sectional view of the internal mechanism of the magnetic control drive of the embodiment of the present application;

[0049] Figure 10 is a schematic diagram of the guide seat of the embodiment of the present application;

[0050] Figure 11 is a schematic diagram of the guide rod of the embodiment of the present application;

[0051] Figure 12 is a schematic diagram of the auxiliary operation handle of the embodiment of the present application;

[0052] Figure 13 is a schematic diagram of the magnetic control drive device of the embodiment of the present application installed on a low-voltage switch;

[0053] Figure 14 is a schematic diagram of the magnetic control drive device of the embodiment of the present application in a split position;

[0054] Figure 15 is a schematic diagram of the magnetic control drive device of the embodiment of the present application in a closed position. DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be given to the present application with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0056] The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments of the present application provide a magnetic control drive device with a manual operation function, Figure 2The diagram shows the external appearance of the magnetic drive device. The outer casing consists of three housing-like components: a bottom shell 1, a top shell 2, and a cap 3. The bottom shell 1 and top shell 2 are made of nylon with fiberglass, offering high material strength. The cap 3 is made of polyoxymethylene, providing high wear resistance. The bottom shell 1 is fixed to the base plate 4 with screws, and the top shell 2 is connected to the bottom shell 1 via clips. Terminals 5 are mounted on the base plate 4 for data transmission. If an automated assembly process is used to install the magnetic drive device on a low-voltage switch, a robotic arm can move the device simply by grasping the top shell 2. The square design of the top shell 2 facilitates robotic arm grasping. Terminals 5 will not swing freely with the movement of the magnetic drive device; they are fixed relative to the base plate 4, facilitating automated connection between the terminals of other components in the low-voltage switch and the terminals 5 of the magnetic drive device. The base plate 4, used to mount the entire magnetic drive device, has four pin sections, each with four through holes for screws to pass through and secure the magnetic drive device to the low-voltage switch.

[0057] The magnetic drive mechanism body, the magnetic drive internal mechanism, and the magnetic drive upper mechanism are arranged between the bottom shell 1, the bottom plate 4, and the top shell 2.

[0058] Figure 3 The diagram shows the main body of the magnetically controlled drive mechanism, as shown below. Figure 3 As shown, the main body of the magnetic drive mechanism includes a top plate 6, a protective cover 7, a guide post 8, a first support 9, a second support 10, a third support 11, a crank arm 12, a guide seat 13, and a guide rod 14; the guide rod 14 is located at the innermost part of the main body of the magnetic drive mechanism. Figure 4 The diagram shows the structure of the top plate 6. The front side of the top plate 6 is connected to a first support 9 and a second support 10 via screws, and the rear side of the top plate 6 is fitted with a third support 11 via screws. Four guide pillars 8 are mounted on the bottom plate 4 and the top plate 6 and are enclosed by a protective cover 7. The crank arm 12 is fixed to the third support 11. The protective cover 7 is installed between the bottom plate 4 and the top plate 6 and is limited by the four guide pillars 8, serving to protect the internal components of the magnetic drive device.

[0059] Figure 5 The diagram shows a schematic of the magnetically controlled upper mechanism, such as... Figure 5As shown, the magnetically controlled upper mechanism includes a first micro switch 15, a second micro switch 16, a third micro switch 17, a first pin 18, a second pin 19, and a third pin 20. The first micro switch 15, the second micro switch 16, and the third micro switch 17 are disposed between the first support 9 and the second support 10, and are fixed by the first pin 18 and the second pin 19. The first pin 18 and the second pin 19 pass through the first support 9, the second micro switch 16, the third micro switch 17, the first micro switch 15, and the second support 10, respectively. The tolerance fit between the first pin 18 and the second pin 19 and the micro switches is a clearance fit, and the fit between the first pin 18 and the second pin 19 and the first support and the second support 10 is an interference fit. The crank arm 12 is fixed to the third support 11 by the third pin 20. The tolerance fit between the third pin 20 and the third support 11 and the crank arm 12 is a clearance fit. The third pin 20 is mounted on the third support 11 by two cotter pins. Two pins are fixedly riveted to the crank arm 12. The pins are locked in the guide seat. When the crank arm 12 rotates, it drives the guide seat 13 to move up and down. Figure 6 The diagram shows the structure of the crank arm 12. A small guide post is welded to the top of the crank arm 12, and two through holes are provided on both sides of the small guide post. The cap 3 is installed on the crank arm 12. Figure 7 The diagram shows the structure of the cap. The bottom of the cap 3 has a rectangular groove that can be inserted into the crank arm 12. The bottom of the rectangular groove has three holes. The two side holes are through holes with the same center as the two through holes at the top of the crank arm. The middle hole is a blind hole that allows the small guide post in the crank arm to pass through.

[0060] Figure 8 The diagram shows the internal mechanism of the magnetic drive. Figure 9 The image shows a cross-sectional view of the internal mechanism of the magnetic drive, as shown below. Figure 8 and Figure 9 As shown, the internal mechanism of the magnetic drive includes a stationary iron core 27, a coil 28, a moving iron core 29, an upper pressure plate 30, and a spring 31. The stationary iron core 27 and the coil 28 are concentric and fixed to the base plate 4 by screws. The moving iron core 29 is located above the stationary iron core 27 and is concentric with it. The stationary iron core 27 and the moving iron core 29 are hollow columnar structures. The coil 28 is sleeved inside the stationary iron core 27 and the moving iron core 29. The stationary iron core 27 and the moving iron core 29 are covered by a protective cover 7. The upper pressure plate 30 is located on the upper part of the moving iron core 29. The spring 31 is surrounded and limited by the moving iron core 29 and the stationary iron core 27, and is coaxial with the moving iron core 29 and the stationary iron core 27. When the stationary iron core 27 and the moving iron core 29 are separated, the length of the spring 31 is extended. When the stationary iron core 27 and the moving iron core 29 are closed, the length of the spring 31 is compressed. The upper pressure plate 30 is mounted on the upper part of the moving iron core 29 by screws, and the guide seat 13 is mounted on the upper pressure plate by screws. Figure 10The schematic diagram of the guide seat is shown in FIG. 1. The guide seat 13 is provided with two sliding grooves which can be clamped with the crank arm 12. The guide seat 13 is clamped with the middle square hole of the top plate 6, so that the guide seat 13 can only move in the vertical direction of the top plate 6. The guide seat 13 is provided with three grooves on the side close to the travel switch. The two side grooves are upward and are in contact with the elastic sheets of the first micro switch 15 and the second micro switch 16 respectively. The middle groove is downward and is in contact with the elastic sheet of the third micro switch 17. When the guide seat 13 moves upward, the elastic sheets of the first micro switch 15 and the second micro switch 16 are pressed, and the micro switch signal is triggered. When the guide seat 13 moves downward, the elastic sheet of the third micro switch 17 is pressed, and the micro switch signal is triggered. The guide seat 13 is provided with a circular groove on the top, and a flat pad can be placed in the circular groove.

[0061] Figure 11 The schematic diagram of the guide rod is shown in FIG. 2. The guide rod 14 is located in the innermost part of the magnetic control driving device. The lower side of the guide rod 14 is in an arc shape and is provided with two rectangular through holes which are used to connect the magnetic control driving device with other devices. The upper side of the guide rod 14 is welded with a stepped cylinder, and the top of the cylinder is provided with external threads. The guide rod 14 penetrates the bottom plate 4, the static iron core 27, the coil 28, the dynamic iron core 29, the upper pressing plate 30, the top plate 6 and the guide seat 13 in sequence. The large cylinder of the stepped cylinder is located on the dynamic iron core 29, so that the guide rod 14 cannot penetrate upward any more. The small cylinder of the stepped cylinder reaches the upper surface of the guide seat 13 and penetrates the flat pad, the elastic pad and the nut in sequence, and is fixed on the guide seat. The guide rod 14, the dynamic iron core 29 and the guide seat 13 are relatively fixed.

[0062] The magnetic control driving device can be further provided with an auxiliary operation handle 26. Figure 12 The schematic diagram of the auxiliary operation handle is shown in FIG. 3. The auxiliary operation handle 26 is inserted into the middle through hole of the cap 3 and the crank arm 12. The cap 3 and the crank arm 12 are controlled to swing by swinging the auxiliary operation handle 26.

[0063] Figure 13 The schematic diagram of the magnetic control driving device installed on a low-voltage switch is shown in FIG. 4. The magnetic control driving device can be installed and removed in the following manner. The guide rod 14 is installed on the low-voltage switch in advance. The guide rod 14 is kept in a vertical state by the switch limiting and is connected with other devices in the switch. When the magnetic control driving device needs to be installed, the static iron core 27 is overlapped with the axis of the guide rod 14, and the magnetic control driving device is slowly lowered. Then, the bottom plate 4 is installed on the low-voltage switch by screws, and the guide rod 14 is fixed with the guide seat 13 by nuts. Thus, the installation of the magnetic control driving device is completed. When the magnetic control driving device is removed, the nuts which fix the guide rod 14 with the guide seat 13 are removed first, and then the four screws on the bottom plate 4 are removed. Thus, the magnetic control driving device can be pulled up and removed. The guide rod 14 is still left on the low-voltage switch. The modular design of the magnetic control driving device is realized. The magnetic control driving device can be installed and removed independently from the switch, and does not affect other mechanisms in the low-voltage switch. The modular design of the low-voltage switch is met, and the flexibility of the low-voltage switch is improved.

[0064] The embodiment of the present application also provides a working method of the device as described in the above embodiment of the present application, and the working method comprises the electric closing operation, the electric opening operation, the manual closing operation and the manual opening operation. Figure 14 Fig. 2 shows a schematic view of the magnetic control driving device in the open state, Figure 15 Fig. 3 shows a schematic view of the magnetic control driving device in the closed state.

[0065] The electric closing operation comprises the following steps: when the switch needs to be electrically closed, the magnetic control driving device is in the open state, and the static iron core 27 and the moving iron core 29 need to be closed. The control panel in the switch sends a closing instruction, the magnetic control driving device receives the closing instruction, the closing instruction is transmitted to the terminal 5 installed on the bottom plate 4, and then transmitted to the coil 28. The coil 28 obtains a forward current, the moving iron core 29 and the static iron core 27 generate a magnetic force, the moving iron core 29 moves downward, and then drives the upper pressing plate 30, the guide seat 13 and the guide rod 14 to move downward, and the moving iron core 29 compresses the spring 31 downward. When the moving iron core 29 and the static iron core 27 are closed, the spring 31 is in a limit compression state, the two rectangular through holes in the guide rod 14 reach the lowermost position, thereby driving the contactor in the switch to be closed, and the switch is in the closed state. The guide seat 13 presses the elastic sheet of the third micro switch 17, triggers the micro switch signal, and the signal is transmitted back to the control panel in the switch. The switch obtains the information that the switch is in the closed state. Even if the power supply is removed at this time, the static iron core 27 and the moving iron core 29 can still maintain the magnetic force, and the magnetic control driving device can still maintain the closed state.

[0066] The electric opening operation comprises the following steps: when the switch needs to be electrically opened, the magnetic control driving device is in the closed state, and the static iron core 27 and the moving iron core 29 need to be separated. The control panel in the switch sends an opening instruction, the magnetic control driving device receives the opening instruction, the opening instruction is transmitted to the terminal 5 installed on the bottom plate 4, and then transmitted to the coil 28. The coil 28 obtains a reverse current, disturbs the internal magnetic field of the moving iron core 29 and the static iron core 27, and makes the moving iron core 29 and the static iron core 27 lose the magnetic force. The spring 31 in the limit compression state is released from the constraint of the iron core magnetic force, and the spring 31 rebounds, thereby driving the moving iron core 29 to move upward, and then driving the upper pressing plate 30, the guide seat 13 and the guide rod 14 to move upward. Until the upper pressing plate 30 touches the top plate 6, thereby limiting the spring 31, the spring 31 no longer rebounds upward, the moving iron core 29 and the static iron core 27 are in the open state, the two rectangular through holes in the guide rod 14 are in the uppermost position, thereby driving the contactor in the switch to be opened, and the switch is in the open state. The guide seat 13 presses the elastic sheet of the first micro switch 15 and the second micro switch 16, triggers the micro switch signal, and the signal is transmitted back to the control panel in the switch. The switch obtains the information that the switch is in the open state.

[0067] The manual opening operation includes: when manually opening, the magnetic control driving device is in the closed state, and the cap 3 is directed to the side close to the micro switch. The cap 3 is pulled by hand, and when the pulling force overcomes the holding magnetic force of the moving iron core 29 and the static iron core 27, the cap 3 drives the crank arm 12 to swing relative to the third support 11, with the third pin shaft 20 as the center, so that the two pins on the crank arm 12 swing towards the side close to the micro switch, thereby driving the guide seat 13 to move upwards, sequentially driving the upper pressing plate 30 and the moving iron core 29 to move upwards, and the spring 31 is released from the compression of the magnetic force and quickly rebounds, accelerating the moving iron core 29 to move away from the static iron core 27, and finally making the upper pressing plate 30 touch the top plate 6, realizing the manual opening, at this time, the cap 3 is directed to the side away from the micro switch, the elastic sheet of the first micro switch 15 and the second micro switch 16 is pressed by the guide seat, and the micro switch sends an opening position signal.

[0068] The manual closing operation includes: when manually closing, the magnetic control driving device is in the open state, and the cap 3 is directed to the side away from the micro switch. The cap 3 is pulled by hand, and when the pulling force overcomes the compression force of the spring 31, the cap 3 drives the crank arm 12 to swing relative to the third support 11, with the third pin shaft 20 as the center, so that the two pins on the crank arm 12 swing towards the side close to the micro switch, thereby driving the guide seat 13 to move downwards, sequentially driving the upper pressing plate 30 and the moving iron core 29 to move downwards, until the moving iron core 29 and the static iron core 27 are in contact with each other, and the spring 31 is compressed to the limit position. The elastic sheet of the third micro switch 17 is pressed by the guide seat 13, and the micro switch sends a closing position signal. After receiving the position signal information from the button cell or small capacitor (capacity about 4.7uF) in the low-voltage switch, the micro switch sends a weak electric stimulus, so that the closed moving iron core 29 and the static iron core 27 are magnetized instantaneously, thereby keeping the moving iron core 29 and the static iron core 27 closed, realizing the manual closing.

[0069] When the manual direct pulling of the cap 3 is not easy to operate, or the force is not enough, the auxiliary operation handle 26 can be inserted into the cap 3, and the manual pulling of the auxiliary operation handle is changed, so as to increase the torque, improve the lever ratio, thereby reducing the pulling force and facilitating the operation.

[0070] In summary, the embodiment of the present application relates to a magnetic control driving device with a manual operation function and a working method thereof, the device comprising a bottom shell, a bottom plate and a top shell; the bottom shell is fixedly installed on the bottom plate, and the top shell is connected with the bottom shell; a magnetic control driving mechanism main body, a magnetic control driving internal mechanism and a magnetic control driving upper mechanism are arranged between the bottom shell, the bottom plate and the top shell. The technical scheme provided by the embodiment of the present application has the following beneficial technical effects: the magnetic control driving device adopts a modular design, can be installed and disassembled independently of a low-voltage switch, does not affect other mechanisms in the low-voltage switch during disassembly, and can realize on-site replacement and maintenance of the magnetic control driving mechanism. A manual opening and closing device is designed to meet the manual opening and closing requirements of the switch, so that the switch can still be used in some harsh scenes, and the use range of the switch is widened. The magnetic control driving device provided by the embodiment of the present application has fewer parts, a simple structure and a long service life compared with a traditional spring type operation driving mechanism, and the magnetic control switch can be replaced on site, thereby improving the overall service life of the low-voltage switch, and the service life can reach 100,000 times. The electrically operated quick closing can be realized, and the closing operation time of the traditional spring type operation driving mechanism is improved from 20 seconds to less than 10 milliseconds. The electrically operated opening speed of the magnetic control driving mechanism is also improved compared with the traditional spring type operation driving mechanism, and the opening operation time is less than 4 milliseconds. The magnetic control driving mechanism greatly improves the response speed of the low-voltage switch and improves the use performance of the product. The terminal is fixedly arranged relative to the magnetic control driving mechanism, and can be automatically installed and plugged with other modules, thereby improving the assembly efficiency. A square top shell structure is designed to facilitate the grabbing of a mechanical hand and improve the installation efficiency of the automatic assembly of the magnetic control driving mechanism. An auxiliary operation handle is designed to improve the torque and thereby reduce the acting force, increase the lever ratio during force transmission, and facilitate the operation of workers. The designed guide seat structure can realize the triggering of the closing signal and the opening signal, the fixing of the connecting guide rod and the guiding of the iron core, integrates the use space, leaves more space for the low-voltage switch to prevent other components, and improves the space utilization rate of the entire switch.

[0071] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

Claims

1. A magnetic control driving device with a manual operation function, characterized by comprising: It comprises a bottom shell (1), a bottom plate (4) and a top shell (2); the bottom shell (1) is fixedly installed on the bottom plate (4), and the top shell (2) is connected with the bottom shell (1); The bottom shell (1), the bottom plate (4) and the top shell (2) are provided with a magnetic control driving mechanism body, a magnetic control driving internal mechanism and a magnetic control driving upper mechanism; the magnetic control driving upper mechanism comprises a first micro switch (15), a second micro switch (16), a third micro switch (17), a first pin shaft (18), a second pin shaft (19) and a third pin shaft (20); the first micro switch (15), the second micro switch (16) and the third micro switch (17) are arranged between the first support (9) and the second support (10) and are fixed through the first pin shaft (18) and the second pin shaft (19); the first pin shaft (18) and the second pin shaft (19) pass through the first support (9), the second micro switch (16), the third micro switch (17), the first micro switch (15) and the second support (10) respectively; the crank arm (12) is fixed on the third support (11) through the third pin shaft (20), and the third pin shaft (20) is limitingly installed on the third support (11) through two split pins; The magnetic control driving internal mechanism comprises a static core (27), a coil (28), a dynamic core (29), an upper pressing plate (30) and a spring (31); The static core (27) and the coil (28) are concentrically and fixedly arranged on the bottom plate (4); The dynamic core (29) is arranged above the static core (27) and is concentric with the static core (27); The static core (27) and the dynamic core (29) are hollow columnar structures, and the coil (28) is sleeved in the static core (27) and the dynamic core (29); The upper pressing plate (30) is arranged on the upper portion of the dynamic core (29); The spring (31) is surrounded and limited by the dynamic core (29) and the static core (27) and is coaxial with the dynamic core (29) and the static core (27); when the static core (27) and the dynamic core (29) are separated, the length of the spring (31) is elongated; when the static core (27) and the dynamic core (29) are closed, the length of the spring (31) is compressed.

2. The apparatus of claim 1, wherein, The magnetic control driving mechanism body comprises a top plate (6), a protective cover (7), guide columns (8), a first support (9), a second support (10), a third support (11), a crank arm (12), a guide seat (13) and a guide rod (14); The guide rod (14) is arranged in the innermost portion of the magnetic control driving mechanism body and sequentially passes through the bottom plate (4), the static core (27), the coil (28), the dynamic core (29), the upper pressing plate (30), the top plate (6) and the guide seat (13); The front side of the top plate (6) is connected with the first support (9) and the second support (10), and the rear side of the top plate (6) is installed with the third support (11); The guide columns (8) are four, and the four guide columns (8) are installed on the bottom plate (4) and the top plate (6) and are wrapped by the protective cover (7); The crank arm (12) is fixed on the third support (11).

3. The apparatus of claim 1, wherein, It also comprises a cap (3), The cap (3) is installed on the toggle lever (12), and the bottom end is internally provided with a rectangular groove which can be clamped into the toggle lever (12); The bottom of the rectangular groove is provided with three holes, two of which are through holes, and the middle hole is a blind hole.

4. The apparatus of claim 3, wherein, The device further comprises an auxiliary operating handle (26); The auxiliary operating handle (26) is inserted into the middle through hole between the cap (3) and the toggle lever (12), and the cap (3) and the toggle lever (12) are controlled to swing by swinging the auxiliary operating handle (26).

5. A method of operating a device as claimed in any one of claims 1-4, characterized in that, The working method comprises electric closing operation, electric opening operation, manual closing operation and manual opening operation.

6. The method of working according to claim 5, characterized in that, The electric closing operation comprises: receiving a closing instruction; The closing instruction is transmitted to the terminal (5) installed on the bottom plate (4), and then transmitted to the coil (28), so that the coil (28) obtains positive electricity, the moving iron core (29) and the static iron core (27) generate magnetic force, the moving iron core (29) moves downward, and then drives the upper pressing plate (30), the guide seat (13) and the guide rod (14) to move downward, and the moving iron core (29) compresses the spring (31) downward, when the moving iron core (29) and the static iron core (27) are closed, the spring (31) is in a limit compression state, and the two rectangular through holes in the guide rod (14) reach the lowermost position, so as to drive the contactor in the switch to close.

7. The method of working according to claim 5, characterized in that, The electric opening operation comprises: receiving an opening instruction; The opening instruction is transmitted to the terminal (5) installed on the bottom plate (4), and then transmitted to the coil (28), so that the coil (28) obtains reverse electricity, disturbs the internal magnetic field of the moving iron core (29) and the static iron core (27), and the moving iron core (29) and the static iron core (27) lose magnetism; the spring (31) in the limit compression state is released from the constraint of the iron core magnetic force, and the spring (31) rebounds, so that the moving iron core (29) moves upward, and then drives the upper pressing plate (30), the guide seat (13) and the guide rod (14) to move upward, until the upper pressing plate (30) touches the top plate (6), so as to limit the spring (31), the spring (31) no longer rebounds upward, the moving iron core (29) and the static iron core (27) are in a split state, and the two rectangular through holes in the guide rod (14) are in the uppermost position, so as to drive the contactor in the switch to open.

8. The method of claim 5, wherein, The manual opening operation comprises: pulling the cap (3) by hand, when the pulling force overcomes the holding magnetic force of the moving iron core (29) and the static iron core (27), the cap (3) drives the toggle lever (12) to swing relative to the third support (11) with the third pin shaft (20) as the center, so that the two pins on the toggle lever (12) swing towards the micro switch, thereby driving the guide seat (13) to move upward, and then driving the upper pressing plate (30) and the moving iron core (29) to move upward, and the spring (31) rebounds quickly after being released from the suppression of the magnetic force, so as to accelerate the moving iron core (29) to move away from the static iron core (27), and finally make the upper pressing plate (30) touch the top plate (6), so as to realize manual opening.

9. The method of claim 5, wherein, The manual closing operation comprises: Pull the cap (3) with hand, when the pulling force overcomes the compression force of spring (31), the cap (3) drives the swing arm (12) to swing relative to the third support (11) with the third pin shaft (20) as the center, the two pins on the swing arm (12) swing towards the micro switch, thus driving the guide seat (13) to move downwards, in turn driving the upper pressing plate (30) and the moving iron core (29) to move downwards until the moving iron core (29) and the static iron core (27) contact each other, the spring (31) is compressed to the limit position; the elastic sheet of the third micro switch (17) is pressed by the guide seat (13), the micro switch sends the closing position signal, after the low-voltage switch receives the position signal information, sends the weak electric stimulation, makes the closed moving iron core (29) and static iron core (27) instantaneous magnetic, thus the moving iron core (29) and the static iron core (27) keep closing, realizes the manual closing.

Images