A high voltage switch opening and closing operating mechanism

Abstract

The invention discloses a high-voltage switch closing and opening operating mechanism, which belongs to the technical field of high-voltage switches and comprises a static contact rod, a dynamic contact rod, an operating plate, a rotation limit box, a synchronization component and a control box. The dynamic contact rod is driven to rotate by a rotating magnetic field generator to close or open the switch with the static contact rod. The extrusion component and the blocking component in the rotation limit box control the rotation angle of the dynamic contact rod under the action of the magnetic field of the control box to achieve 90-degree limited rotation and ensure the stability of closing and opening. The buffer system composed of a buffer bag and a non-Newtonian fluid effectively absorbs kinetic energy and reduces the wear of components caused by mechanical stress. The elastic airbag cushion provides additional elastic protection and fault tolerance to ensure the stability of closing and opening, and releases air pressure potential energy when opening the switch to increase the opening speed. The invention can perform closing operations from two directions, reduce wear and improve stability, while ensuring the closing and opening speeds and providing good elastic buffering to extend the service life of the high-voltage switch.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switches, and more specifically to a high-voltage switch opening and closing operating mechanism. Background Art

[0002] As a vital device in the power system, the stability and reliability of the performance of high-voltage switches are directly related to the safe operation of the power grid. In the operating mechanism of high-voltage switches, the opening and closing speed is a key parameter, which directly affects the closing and opening performance of the switch, as well as the life and safety of the equipment.

[0003] Traditional high-voltage switch operating mechanisms mostly use a single mechanical transmission method to achieve opening and closing actions through mechanical components such as connecting rods and gears. However, this mechanical transmission method has many shortcomings. First, the friction and wear between mechanical components will lead to reduced transmission efficiency and affect the opening and closing speed; second, the accuracy and stability of mechanical components are difficult to ensure, which may easily lead to inadequate opening and closing or malfunction; finally, the mechanical transmission method lacks buffering and shock absorption measures, which may easily generate large impacts and vibrations during the opening and closing process, causing damage to the equipment. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a high-voltage switch opening and closing operating mechanism, which drives the moving contact rod to perform opening and closing actions through the rotating magnetic field generated by a rotating magnetic field generator, and at the same time utilizes the cooperation of a rotation limit box and a control box to achieve precise control of the rotation angle of the moving contact rod. By adjusting the magnetic field strength and direction of the electromagnet in the control box, the extrusion assembly can be precisely controlled, thereby achieving precise adjustment of the rotation speed of the moving contact rod, which can not only avoid the impact and wear problems caused by excessive opening and closing speeds, but also improve the stability and reliability of the opening and closing actions.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A high-voltage switch opening and closing operating mechanism comprises a static contact rod, a moving contact rod, an operating plate, a rotation limit box, a synchronization component and a pair of control boxes, wherein the static contact rod is provided with static contact pieces at the upper and lower ends, and the moving contact pieces are provided with the upper and lower ends of the moving contact rod, and the moving contact pieces match the static contact pieces, a rotating magnetic field generator is fixedly installed at the center of the operating plate, and a moving contact rod rotating shaft is rotatably installed through a bearing, and the moving contact rod rotating shaft extends to the front side of the operating plate, a moving contact rod shaft sleeve is fixedly sleeved on the moving contact rod rotating shaft, and the moving contact rod shaft sleeve is fixedly connected to the moving contact rod, and the synchronization component comprises a magnetic insulating shaft sleeve and a pair of synchronization rods, the magnetic insulating shaft sleeve is fixedly sleeved on the moving contact rod rotating shaft, a pair of the synchronization rods are symmetrically fixedly connected to the outer end of the magnetic insulating shaft sleeve, and the synchronization rod is arranged parallel to the moving contact rod and is located on the inner side thereof, the rotation limit box is slidably installed on the front side of the operating plate, and a pair of the control boxes are symmetrically fixedly connected to the front side of the operating plate, so as to prevent the sliding of the rotation limit box.

[0007] As a further improvement of the present invention, the rotation limit box includes a sliding box body, an arc-shaped slide groove matching the synchronization rod is opened on the inside of the sliding box body, and a pair of arc-shaped cavities located at the opening are opened inside the sliding box body. An extrusion assembly is installed at the center of the interior of the sliding box body, and the two ends of the extrusion assembly are respectively connected to the arc-shaped cavities in opposite directions through pipes, and through holes connected to the arc-shaped cavities are opened at the openings on both sides of the arc-shaped slide groove. A matching blocking assembly is slidably installed in the through hole. Under normal conditions, the synchronization rod can rotate through the arc-shaped slide groove, but under the magnetic attraction of the control box, the extrusion assembly will be driven to move in different directions, thereby forcing the blocking assembly in the corresponding direction to extend to block the rotation of the synchronization rod, thereby realizing the control of the rotation action of the synchronization rod and matching the closing and opening actions between the moving contact rod and the static contact rod.

[0008] As a further improvement of the present invention, the limit rotation box is arc-shaped, and the angle corresponding to the arc is 90 degrees. Since the moving contact rod needs to rotate one hundred and eighty degrees to contact the static contact rod to complete the closing action, the limit rotation box can only rotate 90 degrees under the blocking action of the control box, thereby realizing the symmetrical interchange of the position of the limit rotation box, and half of the path of the synchronization rod will always pass through the limit rotation box, which is used to achieve a certain buffering and protection effect.

[0009] As a further improvement of the present invention, one of the blocking components extends into the arc-shaped slide groove to block the rotation of the synchronization rod, and the other blocking component remains flush with the bottom surface of the arc-shaped slide groove. The blocking component in the rotation direction of the moving contact rod will be hidden and will not form an obstruction, while the other blocking component will extend out to block the synchronization rod on the other side to achieve buffer protection.

[0010] As a further improvement of the present invention, the extrusion assembly includes a pair of piston blocks, a magnet block and a hollow cylinder. The magnet block is fixedly connected between the pair of piston blocks and slidably installed on the inner side of the hollow cylinder. The inner side of the hollow cylinder is filled with liquid. Under the magnetic field driving action of the control box, the magnet block can drive the piston block to move in the corresponding direction and squeeze the liquid. Under the action of the hydraulic pressure, the blocking assembly in the opposite direction is forced to extend, and the blocking assembly in the opposite direction is hidden, thereby realizing the position change of a pair of blocking assemblies.

[0011] As a further improvement of the present invention, the blocking assembly includes a blocking block, a sealing block and a pressure ball which are fixedly connected in sequence, the sealing block matches the through hole, the pressure ball is located on the inner side of the arc-shaped cavity and has a diameter larger than the aperture of the through hole, the blocking block is used to block the synchronization rod, and the sealing block is used to cooperate with the through hole to achieve a sliding sealing effect, and the pressure ball can be moved under the action of hydraulic pressure and prevented from falling off from the through hole.

[0012] As a further improvement of the present invention, a plurality of evenly distributed buffer capsules are fixedly installed on both side walls of the arc-shaped slide groove, and an elastic support block is fixedly installed on the inner side of the buffer capsule and is filled with a buffer solution. The buffer capsule is used to elastically buffer the passing synchronization rod to avoid excessive mechanical stress on the components due to too fast opening and closing speed, resulting in wear or even damage, thereby reducing the service life of the high-voltage switch. The elastic support block is used to provide a certain elastic support effect on the shape of the buffer capsule, which is beneficial for the buffer capsule to restore its shape after being squeezed, and the buffer solution further improves the absorption of kinetic energy and improves the buffering effect.

[0013] As a further improvement of the present invention, the buffer is a non-Newtonian fluid, and the outer edge of the buffer capsule is arc-shaped along the direction in which the arc-shaped slide groove extends. The non-Newtonian fluid is a fluid under normal conditions, and will undergo a "hardening" phenomenon when subjected to high-speed impact, thereby better absorbing kinetic energy. The arc-shaped buffer capsule is softer when impacted by the synchronization rod, and has a gradually increasing effect. It is not easy for the buffer capsule to wear out too quickly or even rupture due to excessive impact, and the service life of the buffer capsule can be extended.

[0014] As a further improvement of the present invention, the control box includes an installation box body, and a pressure sensor and an electromagnet are installed at one end of the installation box body close to the rotation limit box, and the pressure sensor and the electromagnet are electrically connected. After detecting the pressure signal, the pressure sensor is used to control the electromagnet to apply a magnetic field, thereby triggering an adjustment action on the blocking component.

[0015] As a further improvement of the present invention, the area of ​​the outer end of the installation box body corresponding to the pressure sensor is covered with an elastic airbag cushion. The elastic airbag cushion can serve as an elastic protection between the limit rotation box and the control box, and can provide a certain fault tolerance rate for the limit rotation box to move a longer path, thereby ensuring the stability of the contact between the moving contact rod and the static contact rod when the switch is closed. At the same time, the elastic airbag cushion can also release the accumulated air pressure potential energy when the switch is opened, thereby increasing the opening speed to ensure that the high-voltage switch is quickly disconnected.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) The present invention drives the moving contact rod to perform opening and closing actions by means of a rotating magnetic field generated by a rotating magnetic field generator, and simultaneously realizes precise control of the rotation angle of the moving contact rod by means of the cooperation of a rotation limit box and a control box. By adjusting the magnetic field strength and direction of the electromagnet in the control box, precise control of the extrusion assembly can be realized, thereby realizing precise adjustment of the rotation speed of the moving contact rod, which can not only avoid the impact and wear problems caused by excessive opening and closing speeds, but also improve the stability and reliability of the opening and closing actions.

[0018] (2) The structures such as the rotation limit box and the buffer capsule in the present invention can effectively absorb the impact and vibration energy generated by the moving contact rod during the opening and closing process, reducing damage to the equipment and contacts. At the same time, since the opening and closing speed is accurately controlled, unnecessary mechanical stress is reduced, further extending the service life of the equipment.

[0019] (3) The present invention can realize bidirectional closing operation by changing the direction of the rotating magnetic field and the rotation direction of the moving contact rod, which can not only reduce the contact wear between the stationary contact rod and the moving contact rod, but also offset certain mechanical internal stresses and possible equipment offset problems, thereby further improving the stability of the high-voltage switch opening and closing.

[0020] (4) The elastic airbag cushion and buffer bag structures in the present invention play different buffering roles in the closing and opening processes. When closing the switch, the elastic airbag cushion can absorb the huge impact at the moment of closing the switch and accumulate a certain amount of air pressure potential energy; when opening the switch, the buffer bag can absorb the impact and vibration energy during the opening process. This optimized elastic buffering method can provide better buffering effect while ensuring the closing and opening speed, further improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the rotation limiting box of the present invention;

[0023] Figure 3 It is a cross-sectional view of the rotation limiting box part of the present invention;

[0024] Figure 4 is a cross-sectional view of the cushioning bladder of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the blocking assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the extrusion assembly of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the control box of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the present invention when the switch is closed by rotating clockwise;

[0029] Fig. 9 This is a schematic diagram of the structure of the present invention when the gate is opened by rotating counterclockwise;

[0030] Fig.10 It is a schematic diagram of the structure of the present invention when the switch is closed by rotating counterclockwise.

[0031] Description of the numbers in the figure:

[0032] 1. Stationary contact rod; 101. Stationary contact piece; 2. Moving contact rod; 201. Moving contact piece; 3. Operating plate; 4. Rotation limit box; 401. Sliding box body; 402. Piston block; 403. Magnet block; 404. Hollow cylinder; 405. Buffer bag; 406. Elastic support block; 407. Buffer; 408. Block block; 409. Sealing block; 4010. Pressure ball; 5. Control box; 501. Mounting box body; 502. Elastic airbag cushion; 503. Pressure sensor; 504. Electromagnet; 6. Rotating magnetic field generator; 7. Moving contact rod shaft; 8. Moving contact rod bushing; 9. Magnetic insulating bushing; 10. Synchronous rod. DETAILED DESCRIPTION

[0033] An implementation of the present application is described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] See also Figure 1-7A high-voltage switch opening and closing operating mechanism includes a static contact rod 1, a moving contact rod 2, an operating plate 3, a rotation limit box 4, a synchronization component and a pair of control boxes 5. The static contact rod 1 is provided with a static contact piece 101 at the upper and lower ends, and the moving contact rod 2 is provided with a moving contact piece 201 at the upper and lower ends, and the moving contact piece 201 matches the static contact piece 101. A rotating magnetic field generator 6 is fixedly installed at the center of the operating plate 3 and a moving contact rod rotating shaft 7 is rotatably installed through a bearing, and the moving contact rod rotating shaft 7 extends to the front side of the operating plate 3, and a moving contact rod shaft sleeve 8 is fixedly sleeved on the moving contact rod rotating shaft 7, and the moving contact rod The sleeve 8 is fixedly connected to the moving contact rod 2. The moving contact rod sleeve 8 can be made of an insulating material with an embedded magnetic material in the outer shell. The synchronization component includes a magnetic insulating sleeve 9 and a pair of synchronization rods 10. The magnetic insulating sleeve 9 is fixedly sleeved on the moving contact rod shaft 7. A pair of synchronization rods 10 are symmetrically fixedly connected to the outer end of the magnetic insulating sleeve 9, and the synchronization rods 10 are arranged parallel to the moving contact rod 2 and located on the inner side thereof. The limit rotation box 4 is slidably installed on the front side of the operating plate 3, and a pair of control boxes 5 are symmetrically fixedly connected to the front side of the operating plate 3 to prevent the sliding of the limit rotation box 4.

[0036] The rotation limit box 4 includes a sliding box body 401, an arc-shaped slide groove matching the synchronization rod 10 is opened on the inner side of the sliding box body 401, and a pair of arc-shaped cavities located at the opening are also opened inside the sliding box body 401, and an extrusion assembly is installed at the center of the interior of the sliding box body 401, and the two ends of the extrusion assembly are respectively connected to the arc-shaped cavities in opposite directions through pipes, and through holes connected to the arc-shaped cavities are opened at the openings on both sides of the arc-shaped slide groove, and matching blocking assemblies are slidably installed in the through holes. Under normal conditions, the synchronization rod 10 can be rotated through the arc-shaped slide groove, but under the magnetic attraction of the control box 5, the extrusion assembly will be driven to move in different directions, thereby forcing the blocking assembly in the corresponding direction to extend to block the rotation of the synchronization rod 10, thereby realizing the control of the rotation action of the synchronization rod 10 and matching the closing and opening actions between the moving contact rod 2 and the static contact rod 1.

[0037] The rotation limit box 4 is arc-shaped, and the angle corresponding to the arc is 90 degrees. Since the moving contact rod 2 needs to rotate 180 degrees to contact the static contact rod 1 to complete the closing action, the rotation limit box 4 can only rotate 90 degrees under the blocking effect of the control box 5, thereby realizing the symmetrical interchange of the position of the rotation limit box 4, and half of the path of the synchronization rod 10 will always pass through the rotation limit box 4, which is used to achieve a certain buffering and protection effect.

[0038] One of the blocking components extends into the arc-shaped slide groove to block the rotation of the synchronization rod 10, and the other blocking component remains flush with the bottom surface of the arc-shaped slide groove. The blocking component in the rotation direction of the moving contact rod 2 will be hidden and will not form an obstruction, while the other blocking component will extend out to block the synchronization rod 10 on the other side to achieve buffer protection.

[0039] The extrusion assembly includes a pair of piston blocks 402, a magnet block 403 and a hollow cylinder 404. The magnet block 403 is fixedly connected between the pair of piston blocks 402 and slidably installed on the inner side of the hollow cylinder 404. The inner side of the hollow cylinder 404 is filled with liquid. Under the driving action of the magnetic field of the control box 5, the magnet block 403 can drive the piston block 402 to move in the corresponding direction and squeeze the liquid. Under the action of the hydraulic pressure, the blocking assembly in the opposite direction is forced to extend, and the blocking assembly in the opposite direction is hidden, thereby realizing the position change of a pair of blocking assemblies.

[0040] The blocking assembly includes a blocking block 408, a sealing block 409 and a pressure ball 4010 which are fixedly connected in sequence. The sealing block 409 matches the through hole. The pressure ball 4010 is located on the inner side of the arc-shaped cavity and has a diameter larger than the aperture of the through hole. The blocking block 408 is used to block the synchronization rod 10, and the sealing block 409 is used to cooperate with the through hole to achieve a sliding sealing effect. The pressure ball 4010 can be moved under the action of hydraulic pressure and prevented from falling off from the through hole.

[0041] Taking the sealing problem into consideration, a sealing film may be connected between the lower end of the blocking block 408 and the through hole to ensure the sealing and avoid the problem of liquid leakage.

[0042] A plurality of evenly distributed buffer capsules 405 are fixedly installed on both side walls of the arc-shaped slide groove, and an elastic support block 406 is fixedly installed on the inner side of the buffer capsule 405 and filled with a buffer solution 407. The buffer capsule 405 is used to elastically buffer the passing synchronization rod 10 to avoid excessive mechanical stress on the components due to too fast opening and closing speed, resulting in wear or even damage, thereby reducing the service life of the high-voltage switch. The elastic support block 406 is used to play a certain elastic supporting role on the shape of the buffer capsule 405, which is beneficial for the buffer capsule 405 to restore its shape after being squeezed, and the buffer solution 407 further improves the absorption of kinetic energy and improves the buffering effect.

[0043] The buffer 407 is a non-Newtonian fluid, and the outer edge of the buffer capsule 405 is arc-shaped along the direction in which the arc-shaped slide groove extends. The non-Newtonian fluid is a fluid under normal conditions, and will undergo a "hardening" phenomenon when subjected to high-speed impact, thereby better absorbing kinetic energy. The arc-shaped buffer capsule 405 is softer when impacted by the synchronization rod 10, and has a gradually increasing effect. It is not easy for the buffer capsule 405 to wear out or even rupture too quickly due to excessive impact, and the service life of the buffer capsule 405 can be extended.

[0044] The control box 5 includes an installation box body 501, and a pressure sensor 503 and an electromagnet 504 are installed at one end of the installation box body 501 close to the rotation limit box 4, and the pressure sensor 503 and the electromagnet 504 are electrically connected. After detecting the pressure signal, the pressure sensor 503 is used to control the electromagnet 504 to apply a magnetic field, triggering the adjustment action of the blocking component. A microcontroller can be integrated in the circuit, and the control program can be edited in advance to achieve more precise automatic control. The specific circuit connection method and control program are existing technologies and will not be described in detail here.

[0045] The area of ​​the outer end of the installation box body 501 corresponding to the pressure sensor 503 is covered with an elastic airbag cushion 502. The elastic airbag cushion 502 can serve as an elastic protection between the limit rotation box 4 and the control box 5, and can provide a certain fault tolerance rate for the limit rotation box 4 to move a longer path, thereby ensuring the stability of the contact between the moving contact rod 2 and the static contact rod 1 when the switch is closed. At the same time, when the switch is opened, the elastic airbag cushion 502 can also release the accumulated air pressure potential energy, thereby increasing the opening speed to ensure that the high-voltage switch is quickly disconnected.

[0046] It is worth noting that the elastic airbag cushion 502 can be designed to have the same structure as the buffer bag 405 .

[0047] This is because both the moving contact rod 2 and the stationary contact rod 1 have a certain thickness. Therefore, when the switch is actually closed, the moving contact rod 2 does not rotate 180 degrees, but is close to 180 degrees. Therefore, the existence of the elastic airbag cushion 502 can compensate for a certain angle error. The specific setting is selected according to the actual situation of the moving contact rod 2 and the stationary contact rod 1.

[0048] When using, please refer to Figure 8-10When the switch is closed, the rotating magnetic field generator 6 applies a clockwise rotating magnetic field, and drives the moving contact rod shaft 7 to rotate as a whole through the magnetic insulating sleeve 9, so that the moving contact rod 2 rotates synchronously clockwise until it contacts the static contact rod 1. While the rotating magnetic field generator 6 applies a rotating magnetic field, the lower control box 5 synchronously applies a magnetic field 1 that repels the extrusion component. The piston block 402 squeezes the liquid to flow into the arc-shaped cavity in the opposite direction, causing the corresponding blocking component to extend out. Therefore, the synchronous rod 10 will contact the extended blocking component after rotating 90 degrees, and push the rotation limit box 4 to rotate as a whole until it contacts the upper control box 5 and then is blocked. At the same time, a good elastic buffering effect is achieved by the elastic airbag cushion 502, and the elastic buffering effect produces The time point is just when the moving contact rod 2 and the static contact rod 1 are about to contact, so it can avoid high-speed collision between the moving contact rod 2 and the static contact rod 1, which would cause great wear, while still maintaining a relatively fast closing speed. At the same time, after the upper control box 5 blocks the rotation limit box 4, the pressure sensor 503 detects the pressure signal, and then controls the electromagnet 504 to apply the second magnetic field to adsorb the extrusion member, maintaining the original state of the blocking component. When opening the gate, the rotating magnetic field generator 6 applies a rotating magnetic field in the counterclockwise direction, indirectly driving the moving contact rod 2 to rotate synchronously counterclockwise, and only after rotating 90 degrees will the synchronous rod 10 corresponding to the moving contact rod 2 pass through the rotation limit box 4, and rely on the buffer capsule 405 to achieve elastic buffering, so that rapid opening can be achieved in the first half of the time of opening the gate. The gate can quickly cut off the current and extinguish the arc in a very short time, thereby reducing the arc erosion on the static contact rod 1, the dynamic contact rod 2 and the arc extinguishing device, and extending the service life of the equipment. When the synchronization rod 10 rotates 180 degrees to reset, it will be blocked by the blocking component and cannot continue to rotate, thereby maintaining the action after the opening of the gate. When the gate needs to be closed again, the rotating magnetic field generator 6 still applies a counterclockwise rotating magnetic field, and at the same time, the control box 5 on the upper side applies a magnetic field 1 that repels the extrusion component, so that the two blocking components swap their positions and no longer form an obstacle to the rotation of the dynamic contact rod 2. Similarly, when the rotation limit box 4 is blocked by the control box 5 on the lower side, the dynamic contact rod 2 and the static contact rod 1 complete the closing action again, and the control box 5 on the lower side applies a magnetic field 2 that adsorbs the extrusion component to maintain the original state of the blocking component. When the switch is opened again, the rotating magnetic field generator 6 applies a clockwise rotating magnetic field to drive the moving contact rod 2 to reset and restore to the initial state. The closing actions of the moving contact rod 2 in different directions are compared with the closing actions in a single direction in the prior art. Under long-term impact and extrusion, it is very easy to cause wear and even damage to the static contact rod 1 and the moving contact rod 2. The present invention can perform closing operations from two directions, which can not only effectively reduce the contact wear between the static contact rod 1 and the moving contact rod 2, but also offset certain mechanical internal stresses and possible equipment deviations, thereby improving the stability of the high-voltage switch opening and closing. In addition, the time allocation of the elastic buffer of the present invention relies on the elastic buffering effect of the elastic airbag cushion 502 when closing.Avoid the huge impact at the moment of closing, and accumulate a certain amount of air pressure potential energy to increase the opening speed. When opening, rely on the elastic buffering of the buffer capsule 405 in the second half of the path to reduce the speed, but do not affect the opening speed at the beginning. It can provide a better elastic buffering method while ensuring the opening and closing speed, and improve the service life of the operating mechanism.

[0049] It is worth noting that the strength of the adsorbed magnetic field 2 should be greater than the strength of the rotating magnetic field, so as to ensure that the limit box 4 cannot rotate when the control box 5 adsorbs the extrusion component, and prevent the situation where the rotation of the moving contact rod 2 cannot be blocked when it is opened, resulting in secondary closing. The strength of the repulsive magnetic field 1 should be less than the strength of the magnetic field 2, and be kept within the range that can push the magnet block 403 to move but is not enough to push the limit box 4 to slide as a whole. In this way, it can be ensured that the limit box 4 will not slide autonomously and trigger the elastic buffering effect of the elastic airbag cushion 502 in advance. The friction force of the limit box 4 when sliding can be considered in the design, and a T-shaped damping slider can be used in combination with the T-shaped annular groove on the front side of the operating plate 3. In addition, to ensure that the rotating magnetic field does not interfere with the magnetic field of the electromagnet 504, the surface of the operating plate 3 can be covered with magnetic shielding material, and only the area corresponding to the magnetic insulating sleeve 9 is not covered.

[0050] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high voltage switch opening and closing operating mechanism, characterized in that: include: A stationary contact rod (1), wherein the upper and lower ends of the stationary contact rod (1) are both provided with stationary contact pieces (101); A moving contact rod (2), wherein the moving contact rod (2) is provided with moving contact pieces (201) at both the upper and lower ends, and the moving contact piece (201) matches the stationary contact piece (101); An operating plate (3), wherein a rotating magnetic field generator (6) is fixedly mounted at the center of the operating plate (3) and a moving contact rod rotating shaft (7) is rotatably mounted via a bearing, and the moving contact rod rotating shaft (7) extends to the front side of the operating plate (3), a moving contact rod shaft sleeve (8) is fixedly sleeved on the moving contact rod rotating shaft (7), and the moving contact rod shaft sleeve (8) is fixedly connected to the moving contact rod (2); A synchronization component comprises a magnetic insulating sleeve (9) and a pair of synchronization rods (10), wherein the magnetic insulating sleeve (9) is fixedly sleeved on a movable contact rod rotating shaft (7), and the pair of synchronization rods (10) are fixedly connected to the outer end of the magnetic insulating sleeve (9) in a symmetrical manner, and the synchronization rods (10) are arranged parallel to and inside the movable contact rod (2); A rotation limiting box (4), wherein the rotation limiting box (4) is slidably mounted on the front side of the operating plate (3); A pair of control boxes (5) are symmetrically fixedly connected to the front side of the operating plate (3) in an upper and lower manner to prevent the sliding of the rotation limiting box (4).

2. A high-voltage switch opening and closing operating mechanism according to claim 1, characterized in that: The rotation limiting box (4) comprises a sliding box body (401), an arc-shaped slide groove matching the synchronization rod (10) is provided on the inner side of the sliding box body (401), a pair of arc-shaped cavities located at the opening are also provided inside the sliding box body (401), an extrusion assembly is installed at the center of the interior of the sliding box body (401), and the two ends of the extrusion assembly are respectively connected to the arc-shaped cavities in opposite directions through pipes, through holes connected to the arc-shaped cavities are provided at the openings on both sides of the arc-shaped slide groove, and matching blocking assemblies are slidably installed in the through holes.

3. A high-voltage switch opening and closing operating mechanism according to claim 2, characterized in that: The rotation limiting box (4) is arc-shaped, and the angle corresponding to the arc is 90 degrees.

4. A high-voltage switch opening and closing operating mechanism according to claim 3, characterized in that: One of the blocking components extends into the arc-shaped slide groove to block the rotation of the synchronization rod (10), and the other blocking component is kept flush with the bottom surface of the arc-shaped slide groove.

5. A high-voltage switch opening and closing operating mechanism according to claim 4, characterized in that: The extrusion assembly comprises a pair of piston blocks (402), a magnet block (403) and a hollow cylinder (404); the magnet block (403) is fixedly connected between the pair of piston blocks (402) and slidably installed inside the hollow cylinder (404); the inside of the hollow cylinder (404) is filled with liquid.

6. A high-voltage switch opening and closing operating mechanism according to claim 5, characterized in that: The blocking assembly comprises a blocking block (408), a sealing block (409) and a pressure ball (4010) which are fixedly connected in sequence, the sealing block (409) matches the through hole, and the pressure ball (4010) is located inside the arc-shaped cavity and has a diameter larger than the aperture of the through hole.

7. A high-voltage switch opening and closing operating mechanism according to claim 6, characterized in that: A plurality of evenly distributed buffer capsules (405) are fixedly mounted on both side walls of the arc-shaped slide groove, and an elastic support block (406) is fixedly mounted inside the buffer capsule (405) and is filled with a buffer (407).

8. A high-voltage switch opening and closing operating mechanism according to claim 7, characterized in that: The buffer (407) is a non-Newtonian fluid, and the outer edge of the buffer bag (405) is in an arc shape along the direction in which the arc-shaped slide groove extends.

9. A high-voltage switch opening and closing operating mechanism according to claim 8, characterized in that: The control box (5) comprises a mounting box body (501), and a pressure sensor (503) and an electromagnet (504) are mounted on one end of the mounting box body (501) close to the rotation limiting box (4), and the pressure sensor (503) and the electromagnet (504) are electrically connected.

10. A high-voltage switch opening and closing operating mechanism according to claim 8, characterized in that: The area at the outer end of the installation box body (501) corresponding to the pressure sensor (503) is covered with an elastic airbag cushion (502).

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