Direct-acting interlocking device based on magnetic control operating mechanism

Abstract

The invention relates to the technical field of circuit breakers, in particular to a direct-acting interlocking device based on a magnetic control operating mechanism, which comprises a protective cylinder, a vacuum arc-extinguishing chamber is arranged in the protective cylinder, and a static contact is fixedly connected to a layering position in the vacuum arc-extinguishing chamber. And two moving contacts which are respectively opposite to the upper end and the lower end of the static contact are also arranged in the vacuum arc-extinguishing chamber. According to the invention, through the arrangement of the magnetic control mechanism and the unique magnetic operation switching-on and switching-off mode of the magnetic control mechanism, the switching speed of two sections of incoming line power supplies can be realized in a shorter time, and the stability of continuous operation of important electric equipment is ensured; the interlocking mechanism can control the motion modes of the two magnetic control mechanisms to be opposite in a mechanical motion mode so as to ensure that when one magnetic control mechanism drives the moving contact and the static contact to be in contact closing, the other magnetic control mechanism is switched off, and therefore the possibility of current loop closing can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to a direct-acting interlocking device based on a magnetically controlled operating mechanism. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. Therefore, controlling the response speed of the switch in the circuit breaker circuit and safely locking the switch are the key to ensuring the safe flow of current. However, traditional circuit breakers usually control the flow of a single circuit and control the current by connecting in series. Under the control of dual power supplies, two circuit breakers have the risk of closing the current loop in the circuit.

[0003] For example, the patent number CN110459420B discloses an integrated special medium-voltage dual-power switching device with mechanical interlocking. Through the unique transmission locking, it avoids the defects of the current electrical interlocking scheme caused by the failure of electronic components or the failure of the stroke indication, and fully ensures that the two vacuum circuit breakers are closed and opened, ensuring the safety and reliability of the line.

[0004] However, although the device proposed in the prior art can facilitate the realization of safe and reliable one-closing and one-opening, when the double switches are closed and opened, the locking transmission effect between the components is slow, and it is easy for one end to be closed while the other end is not yet opened, thereby posing a certain risk of current loop closing. Summary of the invention

[0005] The purpose of the present invention is to make up for the shortcomings of the prior art and to provide a direct-acting interlocking device based on a magnetically controlled operating mechanism. This scheme can reduce the risk of current loop closing through the setting of the interlocking structure, and through the new magnetically controlled opening and closing method, it can achieve the switching speed of the two-section incoming power supply in a shorter time, thereby ensuring the stability of continuous operation of important electrical equipment.

[0006] In order to solve the above problems, the present invention provides the following technical solutions: a direct-acting interlocking device based on a magnetically controlled operating mechanism, comprising a protective tube, a vacuum arc extinguishing chamber is arranged inside the protective tube, a static contact is fixedly connected to the layered part inside the vacuum arc extinguishing chamber, and two moving contacts are also arranged inside the vacuum arc extinguishing chamber, which are respectively opposite to the upper and lower ends of the static contact.

[0007] The outside of the protective tube is also provided with two groups of magnetic control mechanisms respectively facing the upper and lower directions of the protective tube. The magnetic control mechanism includes a shell and an insulating transmission rod that slides with the reserved hole on the outer surface of the shell and is connected to the moving contact. The magnetic control mechanism is used to push the moving contact and the static contact into contact through magnetic control.

[0008] The magnetic control mechanism also includes an L-shaped fixing plate fixed on the outer surface of the shell, and the outside of the protective tube is also provided with an interlocking mechanism connected to the L-shaped fixing plate. The interlocking mechanism includes two groups of micro switches installed on the outer surface of the L-shaped fixing plate, and the micro switches are used to control the magnetic control mechanism to push or pull the moving contact; the interlocking mechanism is used to control the mutual locking of the two groups of magnetic control mechanisms.

[0009] Furthermore, the outer surface of the moving contact is slidably matched with the reserved hole of the vacuum arc extinguishing chamber, and the vacuum arc extinguishing chamber is used to quickly extinguish the vacuum arc generated when the static contact and the moving contact are in contact and suppress the current.

[0010] The beneficial effect of adopting the above further scheme is that by setting up a vacuum arc extinguishing chamber, the shell of the vacuum arc extinguishing chamber adopts an airtight insulating shell made of glass or ceramic. Through the excellent insulation of the vacuum in the tube, the medium and high voltage circuit can quickly extinguish the arc and suppress the current after the power is cut off, thereby avoiding accidents and unexpected events.

[0011] Furthermore, the magnetic control mechanism also includes a commutator installed on the inner wall of the shell, and a magnetic coil installed at the output end of the commutator. The end of the insulating transmission rod away from the moving contact is fixedly connected to a magnetic column facing the magnetic coil. The commutator is used to pass current into the magnetic coil to control the excitation or demagnetization of the magnetic coil.

[0012] The beneficial effect of adopting the above further scheme is that by setting up a magnetic control mechanism, it is possible to facilitate the opening and closing operations of pushing or pulling the moving contact and the static contact, and through the unique structural design of the magnetic control mechanism, the moving contact can be pushed or pulled quickly, thereby improving the response speed of the opening and closing operations between the moving contact and the static contact.

[0013] Furthermore, the magnetic control mechanism also includes a fixing ring fixed on the outer surface of the insulating transmission rod and located in the shell, the fixing ring is located at one end of the insulating transmission rod close to the magnetic column, and a first telescopic spring sleeved on the outer surface of the insulating transmission rod, one end of the first telescopic spring is fixedly connected to the inner wall of the shell, and the other end of the first telescopic spring is in contact with one end of the fixing ring away from the magnetic column, and the first telescopic spring is used to push the insulating transmission rod to reset.

[0014] The beneficial effect of adopting the above further solution is that, by providing the first telescopic spring, it is possible to facilitate the resetting of the insulating transmission rod and the moving contact by the elastic resetting force of the first telescopic spring after the magnetic coil is demagnetized.

[0015] Furthermore, the interlocking mechanism also includes a connecting plate fixedly connected to the two L-shaped fixing plates, and the outer surface of the protective tube is fixedly connected to a fixing clamping ring clamped to the connecting plate.

[0016] The beneficial effect of adopting the above further solution is that, by providing a connecting plate and a fixing clamp ring, the position of the protective tube can be easily fixed, thereby preventing the protective tube from being suspended in the air and affecting the stability of the operation of the entire device.

[0017] Furthermore, the interlocking mechanism also includes a sliding rod fixedly connected to the outer surface protrusions of the two L-shaped fixed plates, and a sliding cylinder sleeved on the sliding rod and slidingly matched with the sliding rod. Both ends of the sliding cylinder are fixedly connected to a pushing cross bar, and the pushing cross bar pushes the elastic sheet at the contact end of the micro switch to control the opening of the micro switch.

[0018] The beneficial effect of adopting the above further scheme is that by setting a sliding cylinder, it is easy to slide in the sliding rod, and during the sliding process, the pushing cross bar is driven to move, so that the pushing cross bar can squeeze the elastic sheet at the contact end of the micro switch, thereby starting the magnetic control mechanism through the micro switch to push or pull the moving contact.

[0019] Furthermore, the interlocking mechanism also includes two second telescopic springs sleeved on the outer surface of the sliding rod, and the two ends of the second telescopic springs are respectively connected to the protrusions on the outer surface of the pushing cross bar and the L-shaped fixing plate.

[0020] The beneficial effect of adopting the above further scheme is that, by providing a second telescopic spring, it is possible to facilitate resetting after the push cross bar is pushed to contact the micro switch and start, thereby reducing the possibility of current looping through the double switch and interlocking design.

[0021] Furthermore, the interlocking mechanism also includes a guide bar fixed on the outer surface of the slide cylinder and slidably matched with the connecting plate, and the guide bar is used to guide the movement of the slide cylinder.

[0022] The beneficial effect of adopting the above further solution is that by providing a guide strip, it is possible to better facilitate the sliding of the slide cylinder at the connecting plate, thereby preventing the slide cylinder from rotating during the sliding process on the slide rod and affecting the contact between the cross bar and the micro switch.

[0023] Compared with the prior art, the direct-acting interlocking device based on the magnetically controlled operating mechanism has the following beneficial effects:

[0024] 1. The present invention provides a magnetic control mechanism, and through the unique magnetic operation of the magnetic control mechanism to open and close the switch, it can achieve the switching speed of the two sections of incoming power in a shorter time, thereby ensuring the stability of continuous operation of important electrical equipment. When opening and closing the switch, the interlocking mechanism can control the movement modes of the two groups of magnetic control mechanisms in opposite directions through mechanical movement, so as to ensure that when one group of magnetic control mechanisms drives the moving contact to contact with the static contact to close the switch, the other group of magnetic control mechanisms opens the switch, thereby reducing the possibility of current loop closing.

[0025] 2. The present invention provides a first telescopic spring, which can facilitate the resetting of the insulating transmission rod and the moving contact and the separation of the moving contact and the stationary contact through the elastic resetting force of the first telescopic spring after energy storage after the magnetic coil is demagnetized, and the two groups of micro switches arranged opposite to each other respectively control the pushing or pulling of the moving contact by the magnetic control mechanism, so that after the magnetic control mechanism drives the moving contact on one side to contact the stationary contact, the moving contact on the other side can be separated from the stationary contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of the three-dimensional structure of the overall device of the present invention;

[0027] Figure 2 It is a three-dimensional structural side view of the overall device of the present invention;

[0028] Figure 3 It is a three-dimensional structural section view of the overall device of the present invention;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the interlocking mechanism of the present invention;

[0030] Figure 5 It is a cross-sectional view of the internal structure of the vacuum interrupter of the present invention;

[0031] Figure 6 For the present invention Figure 3 A partial enlargement of point A in the middle.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Protective tube; 2. Vacuum interrupter; 3. Static contact; 4. Moving contact; 5. Magnetron mechanism; 501. Shell; 502. Insulating transmission rod; 503. Commutator; 504. Magnetic coil; 505. Magnetic column; 506. Fixed ring; 507. First telescopic spring; 508. L-shaped fixed plate; 6. Interlocking mechanism; 601. Micro switch; 602. Connecting plate; 603. Fixed clamp; 604. Sliding rod; 605. Sliding tube; 606. Pushing cross bar; 607. Second telescopic spring; 608. Guide strip. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0036] As described in the background technology, in the prior art, the locking transmission effect between components when opening and closing the switch is slow, and it is easy for one end to be closed while the other end is not yet opened, thereby posing a certain risk of current loop closing. For this reason, the present embodiment provides a direct-acting interlocking device based on a magnetically controlled operating mechanism. The device can reduce the risk of current loop closing by setting an interlocking structure, and can achieve the switching speed of the two-stage incoming power supply in a shorter time through a new magnetically controlled opening and closing method, thereby ensuring the stability of continuous operation of important electrical equipment.

[0037] See also Figure 1 - Figure 6 This embodiment proposes a direct-acting interlocking device based on a magnetically controlled operating mechanism, including a protective tube 1, a vacuum arc extinguishing chamber 2 is arranged inside the protective tube 1, a static contact 3 is fixedly connected to the layered part inside the vacuum arc extinguishing chamber 2, and two moving contacts 4 are also arranged inside the vacuum arc extinguishing chamber 2, which are respectively opposite to the upper and lower ends of the static contact 3.

[0038] In this embodiment, by providing a protective tube 1, it is convenient to protect the vacuum arc chamber 2, and it is convenient to stabilize the protective tube 1 and the vacuum arc chamber 2 through subsequent components, thereby reducing the shaking during actual operation, and the static contact 3 is a common contact point between the two moving contacts 4.

[0039] As an implementation method, the outer surface of the moving contact 4 is slidably matched with the reserved hole of the vacuum interrupter 2, and the vacuum interrupter 2 is used to quickly extinguish the vacuum arc generated when the static contact 3 and the moving contact 4 are in contact and suppress the current.

[0040] In this embodiment, a vacuum arc extinguishing chamber 2 is provided, and the outer shell of the vacuum arc extinguishing chamber 2 is an airtight insulating shell made of glass or ceramic. The excellent insulation of the vacuum in the tube allows the medium and high voltage circuits to quickly extinguish arcs and suppress current after the power is cut off, thereby avoiding accidents and unexpected events. The static contact 3 and the moving contact 4 will generate arcs when they are released or separated, so that the generated arcs are quickly extinguished by the vacuum arc extinguishing chamber 2 and the generation of current is suppressed.

[0041] As an implementation method, two groups of magnetic control mechanisms 5 are also provided on the outside of the protective tube 1, which are respectively opposite to the upper and lower positions of the protective tube 1. The magnetic control mechanism 5 includes a shell 501, and an insulating transmission rod 502 that slides with the reserved hole on the outer surface of the shell 501 and is connected to the moving contact 4. The magnetic control mechanism 5 is used to push the moving contact 4 to contact with the static contact 3 through magnetic control.

[0042] The beneficial effect of adopting the above further scheme is that, through the setting of the magnetic control mechanism 5, it is possible to facilitate pushing the moving contact 4 to contact the static contact 3, and the magnetic control mechanism 5 has a fast response through a new magnetic control operation setting, avoiding the situation where the internal structure is complex and easy to be damaged.

[0043] As an implementation method, the magnetic control mechanism 5 also includes a commutator 503 installed on the inner wall of the shell 501, and a magnetic coil 504 installed at the output end of the commutator 503. The end of the insulating transmission rod 502 away from the moving contact 4 is fixedly connected with a magnetic column 505 facing the magnetic coil 504. The magnetic coil 504 and the magnetic column 505 are arranged opposite to each other. The commutator 503 is used to pass current to the magnetic coil 504 to control the excitation or demagnetization of the magnetic coil 504.

[0044] In this embodiment, by setting up a magnetic control mechanism 5, it is possible to facilitate the opening and closing operations of pushing or pulling the moving contact 4 and the stationary contact 3, and through the unique structural design of the magnetic control mechanism 5, the moving contact 4 can be quickly pushed or pulled, thereby improving the response speed of the opening and closing operations between the moving contact 4 and the stationary contact 3.

[0045] In addition, when opening and closing the switch, a forward or reverse current is passed into the commutator 503, so that the commutator 503 can quickly excite or demagnetize the magnetic coil 504. The magnetic coil 504 adopts a new magnetic material, which is an aluminum-nickel-cobalt permanent magnet alloy. After excitation, its characteristics can be changed into a permanent magnetic material, and after demagnetization, it can become a non-magnetic material.

[0046] As a supplement, a forward current is passed through the commutator 503, and the current generates a magnetic field through the magnetic coil 504, so that the aluminum nickel cobalt permanent magnet alloy is excited and becomes a permanent magnetic material. The magnetic coil 504 after excitation generates magnetic repulsion to the magnetic column 505, thereby maintaining the closed state. When the forward current of the commutator 503 is turned off, due to the high residual magnetism characteristics of the aluminum nickel cobalt permanent magnet alloy, the magnetic coil 504 can also magnetically repel the magnetic column 505, so that it is convenient to maintain the closed state after the commutator 503 is turned off. When a reverse current is passed through the commutator 503, the reverse current generates a magnetic field in the opposite direction to that during excitation through the magnetic coil 504, and the aluminum nickel cobalt permanent magnet alloy is demagnetized. After demagnetization, the aluminum nickel cobalt permanent magnet alloy becomes a non-magnetic material, and the magnetic repulsion of the magnetic coil 504 to the magnetic column 505 disappears, thereby achieving opening.

[0047] As an implementation manner, the magnetron mechanism 5 also includes a fixing ring 506 fixed on the outer surface of the insulating transmission rod 502 and located in the shell 501, the fixing ring 506 is located at one end of the insulating transmission rod 502 close to the magnetic column 505, and a first telescopic spring 507 sleeved on the outer surface of the insulating transmission rod 502 and located in the shell 501, one end of the first telescopic spring 507 is fixedly connected to the inner wall of the shell 501, and the other end of the first telescopic spring 507 is in contact with one end of the fixing ring 506 away from the magnetic column 505, and the first telescopic spring 507 is used to push the insulating transmission rod 502 to reset.

[0048] In this embodiment, by providing the first telescopic spring 507, it is possible to facilitate the reset of the insulating transmission rod 502 and the moving contact 4 through the elastic reset force of the first telescopic spring 507 after the magnetic coil 504 is demagnetized. When closing the switch, the magnetic column 505 and the insulating transmission rod 502 push the moving contact 4 to squeeze the first telescopic spring 507 to store energy when closing the switch, and when opening the switch, the stored energy is released to quickly open the switch.

[0049] As an embodiment, the magnetic control mechanism 5 also includes an L-shaped fixing plate 508 fixed on the outer surface of the shell 501, and the outside of the protective tube 1 is also provided with an interlocking mechanism 6 connected to the L-shaped fixing plate 508. The interlocking mechanism 6 includes two groups of micro switches 601 installed on the outer surface of the L-shaped fixing plate 508. The micro switches 601 are used to control the push or pull of the moving contact 4 by the magnetic control mechanism 5; the interlocking mechanism 6 is used to control the mutual locking of the two groups of magnetic control mechanisms 5.

[0050] The beneficial effect of adopting the above further scheme is that by setting up the interlocking mechanism 6, the interlocking mechanism 6 can control the movement modes between the two groups of magnetic control mechanisms 5 to be opposite through mechanical movement, so as to ensure that when one group of magnetic control mechanisms 5 drives the moving contact 4 to contact and close the static contact 3, the other group of magnetic control mechanisms 5 opens the circuit, thereby reducing the possibility of current closing.

[0051] As an implementation manner, the interlocking mechanism 6 further includes a connecting plate 602 fixedly connected to the two L-shaped fixing plates 508 , and a fixing clamping ring 603 clamped to the connecting plate 602 is fixedly connected to the outer surface of the protective tube 1 .

[0052] In this embodiment, by providing the connecting plate 602 and the fixing clamp ring 603 , the position of the protective tube 1 can be easily fixed, thereby preventing the protective tube 1 from being suspended in the air and affecting the stability of the operation of the entire device.

[0053] As an implementation method, the interlocking mechanism 6 also includes a sliding rod 604 fixedly connected to the outer surface protrusions of the two L-shaped fixing plates 508, and a sliding cylinder 605 sleeved on the sliding rod 604 and slidably matched with the sliding rod 604. Both ends of the sliding cylinder 605 are fixedly connected with a pushing cross bar 606. The pushing cross bar 606 pushes the elastic sheet at the contact end of the micro switch 601 to control the opening of the micro switch 601.

[0054] In this embodiment, by setting up the slide cylinder 605, it is easy to slide on the slide rod 604, and during the sliding process, the push cross bar 606 is driven to move, so that the push cross bar 606 can squeeze the elastic sheet at the contact end of the micro switch 601, thereby starting the magnetic control mechanism 5 to push or pull the moving contact 4 through the micro switch 601.

[0055] As a supplement, two groups of micro switches 601 arranged opposite to each other respectively control the pushing or pulling of the moving contact 4 by the magnetic control mechanism 5, so that after the magnetic control mechanism 5 drives the moving contact 4 on one side to contact the static contact 3, the moving contact 4 on the other side can be separated from the static contact 3, thereby achieving interlocking between the two groups of magnetic control mechanisms 5 and avoiding the situation where the moving contact 4 is pushed to contact the static contact 3 at the same time, resulting in a current loop.

[0056] As an implementation manner, the interlocking mechanism 6 further includes two second telescopic springs 607 sleeved on the outer surface of the slide rod 604 , and the two ends of the second telescopic springs 607 are respectively connected to the protrusions on the outer surface of the push cross bar 606 and the L-shaped fixing plate 508 .

[0057] In this embodiment, by providing a second telescopic spring 607, it is possible to facilitate resetting after the push cross bar 606 is pushed to contact the micro switch 601 and start, thereby reducing the possibility of current looping through the double switch and interlocking design.

[0058] In addition, when the slide cylinder 605 is pulled by external force to slide on the slide rod 604, it can drive the push cross bar 606 to move and squeeze the corresponding micro switch 601. The magnetic coil 504 in one group of magnetic control mechanisms 5 is connected to the micro switch 601 with a forward current to start. At the same time, the magnetic coil 504 in another group of magnetic control mechanisms 5 is connected to the micro switch 601 with a reverse current to start. This can make the movement modes between the two groups of magnetic control mechanisms 5 opposite, which can facilitate the contact between the static contact 3 and the moving contact 4 on one side, thereby reducing the possibility of current closing.

[0059] As an implementation manner, the interlocking mechanism 6 further includes a guide bar 608 fixed on the outer surface of the slide cylinder 605 and slidably matched with the connecting plate 602 , and the guide bar 608 is used to guide the movement of the slide cylinder 605 .

[0060] In this embodiment, by providing a guide bar 608, it is possible to better facilitate the sliding of the slide 605 on the connecting plate 602, thereby preventing the slide 605 from rotating during the sliding process on the slide rod 604 and affecting the contact between the cross bar 606 and the micro switch 601, thereby greatly improving the practicality of the overall device.

[0061] In addition, the micro switch 601 in the present invention is a conventional device purchased on the market and known to technicians in this field. The model can be selected or customized according to actual needs. Its setting method, installation method and electrical connection method are only required to be debugged according to the requirements of its instruction manual for technicians in this field, and will not be described in detail here.

[0062] The working principle of the present invention is as follows: when closing the circuit, first pull the slide 605 downward, and the slide 605 drives the push cross bar 606 to squeeze the two micro switches 601 in the same direction under the limiting action of the slide bar 604 and the guide bar 608, so that the push cross bar 606 squeezes the elastic sheet on the micro switch 601, so that the lower micro switch 601 controls the commutator 503 on the same side to transmit the positive current to the magnetic coil 504 on the same side, and excites the magnetic coil 504 on the same side to change it into a permanent magnetic material, so that a magnetic repulsive force can be generated between the magnetic coil 504 and the magnetic column 505, and then the magnetic column 505 located above the magnetic coil 504 is pushed upward, so that the magnetic column 505 pushes the moving contact 4 on the same side to contact the static contact 3 through the insulating transmission rod 502, so as to facilitate closing the circuit.

[0063] When the cross bar 606 is pushed below to squeeze and start the micro switch 601, the cross bar 606 located above the slide 605 can squeeze the micro switch 601 on the same side and in the same direction at the same time, and the commutator 503 on the same side is controlled by the micro switch 601 to pass a reverse current, so that the commutator 503 demagnetizes the magnetic coil 504, thereby releasing the magnetic repulsion between the magnetic coil 504 and the magnetic column 505, and then the elastic reset force of the first telescopic spring 507 can push the magnetic column 505 on the same side, the insulating transmission rod 502 and the moving contact 4 and the static contact 3 to open the gate operation, and then when one group of magnetic control mechanisms 5 is started, the other group of magnetic control mechanisms 5 can be controlled to be closed, thereby completely reducing the possibility of current closing.

[0064] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A direct-acting interlocking device based on a magnetically controlled operating mechanism, characterized in that: Comprising a protective tube (1), a vacuum interrupter (2) is arranged inside the protective tube (1), a static contact (3) is fixedly connected to a layer inside the vacuum interrupter (2), and two moving contacts (4) are also arranged inside the vacuum interrupter (2) and are respectively opposite to the upper and lower ends of the static contact (3); The protective tube (1) is also provided with two groups of magnetic control mechanisms (5) facing the protective tube (1) at upper and lower positions respectively. The magnetic control mechanism (5) comprises a shell (501) and an insulating transmission rod (502) which is slidably matched with a reserved hole on the outer surface of the shell (501) and connected to the moving contact (4). The magnetic control mechanism (5) is used to push the moving contact (4) to contact the stationary contact (3) through magnetic control; The magnetic control mechanism (5) further comprises an L-shaped fixing plate (508) fixed on the outer surface of the shell (501); the outer portion of the protective tube (1) is further provided with an interlocking mechanism (6) connected to the L-shaped fixing plate (508); the interlocking mechanism (6) comprises two groups of micro switches (601) mounted on the outer surface of the L-shaped fixing plate (508); the micro switches (601) are used to control the magnetic control mechanism (5) to push or pull the moving contact (4); and the interlocking mechanism (6) is used to control the mutual locking of the two groups of magnetic control mechanisms (5).

2. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 1 is characterized in that: The outer surface of the moving contact (4) is slidably matched with a reserved hole of the vacuum arc extinguishing chamber (2), and the vacuum arc extinguishing chamber (2) is used to quickly extinguish the vacuum arc generated when the static contact (3) and the moving contact (4) are in contact and to suppress the current.

3. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 1 is characterized in that: The magnetic control mechanism (5) further comprises a commutator (503) mounted on the inner wall of the housing (501), and a magnetic coil (504) mounted on the output end of the commutator (503); one end of the insulating transmission rod (502) away from the moving contact (4) is fixedly connected to a magnetic column (505) facing the magnetic coil (504); and the commutator (503) is used to pass current through the magnetic coil (504) to control the excitation or demagnetization of the magnetic coil (504).

4. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 3 is characterized in that: The magnetic control mechanism (5) further comprises a fixing ring (506) fixed to the outer surface of the insulating transmission rod (502) and located in the housing (501), the fixing ring (506) being located at one end of the insulating transmission rod (502) close to the magnetic column (505), and a first telescopic spring (507) sleeved on the outer surface of the insulating transmission rod (502), one end of the first telescopic spring (507) being fixedly connected to the inner wall of the housing (501), and the other end of the first telescopic spring (507) being in contact with one end of the fixing ring (506) away from the magnetic column (505), and the first telescopic spring (507) being used to push the insulating transmission rod (502) to reset.

5. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 1 is characterized in that: The interlocking mechanism (6) further comprises a connecting plate (602) fixedly connected to the two L-shaped fixing plates (508), and a fixing clamping ring (603) clamped to the connecting plate (602) is fixedly connected to the outer surface of the protective tube (1).

6. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 5 is characterized in that: The interlocking mechanism (6) further comprises a sliding rod (604) fixedly connected to the outer surface protrusions of the two L-shaped fixing plates (508), and a sliding cylinder (605) sleeved on the sliding rod (604) and slidably matched with the sliding rod (604), wherein both ends of the sliding cylinder (605) are fixedly connected to a pushing cross rod (606), and the pushing cross rod (606) pushes the elastic sheet at the contact end of the micro switch (601) to control the opening of the micro switch (601).

7. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 5 is characterized in that: The interlocking mechanism (6) further comprises two second telescopic springs (607) sleeved on the outer surface of the sliding rod (604), and the two ends of the second telescopic springs (607) are respectively connected to the protrusions on the outer surface of the pushing cross bar (606) and the L-shaped fixing plate (508).

8. The direct-acting interlocking device based on the magnetically controlled operating mechanism according to claim 5, characterized in that: The interlocking mechanism (6) further comprises a guide bar (608) fixed to the outer surface of the slide cylinder (605) and slidably matched with the connecting plate (602), wherein the guide bar (608) is used to guide the movement of the slide cylinder (605).

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