Electrical switch for electrical engineering

Abstract

The invention discloses an electrical switch for electrical engineering, and relates to the technical field of switches, and the electrical switch specifically comprises a hollow base, a switch seat is sleeved with the hollow base, a plurality of switch bodies are arranged on the surface of the switch seat at equal intervals, a transmission shaft and a composite protection assembly are arranged at the front end of the switch seat, and the composite protection assembly comprises an annular plate. A plurality of strip-shaped cover plates are arranged and installed on the outer ring structure of the annular plate, one end of the transmission shaft is sleeved with the front end structure of the switch base through a bearing, and the other end of the transmission shaft is fixedly connected to the inner side of the middle of the annular plate in a sleeved mode. After the torsional spring, the composite protection assembly, the transmission shaft and the plurality of protection cylinders are matched with the switch base and the plurality of switch bodies on the switch base are combined for use, the composite protection assembly can sequentially cover and seal the open ports of the plurality of protection cylinders under the support of the transmission shaft; and then dustproof and anti-touch protection is carried out on the switch body in the protection cylinder, and the problems in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of switches, specifically to an electrical switch for electrical engineering. Background Technology

[0002] An electrical switch, as a device that can "open" or "close" a circuit, works primarily by changing the connection state of its internal contacts to control the flow of current. When closed, the contacts are in contact, the circuit is connected, and current can flow. When open, the contacts separate, the circuit is broken, and the current is cut off. Its core function is "control," and it has a wide range of applications, including motor control in existing technologies and the control of various power cabinets in electrical engineering.

[0003] Currently, existing technologies for electrical switches used in environments with long-term exposure employ corresponding protective devices to prevent contact and dust. For example, patent application CN202420467050.X discloses an electrical switch for electrical engineering, which "by setting a protective mechanism, the outer shell is fitted onto the outside of the electrical switch body. The locking block and lock hole in the engaged state lock and limit the rotation of the flip plate. The flip plate in the limited state closes the opening of the outer shell, thereby protecting the electrical switch body in the closed state." However, the applicant found in real-world use that while the existing flip-type protective devices for electrical switches can provide a certain degree of protection, their installation and use require a large amount of clearance. Furthermore, each use of the electrical switch requires manual opening and closing, which is cumbersome and easy to forget, resulting in limited protective effectiveness. Summary of the Invention

[0004] This application proposes an electrical switch for electrical engineering, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: an electrical switch for electrical engineering, comprising a hollow base, a switch holder is fitted inside the hollow base, and a plurality of switch bodies are equidistantly arranged on the surface of the switch holder. A drive shaft and a composite protective assembly are provided at the front end of the switch holder. The composite protective assembly includes a ring plate, and a plurality of strip-shaped cover plates are arranged and installed on the outer ring structure of the ring plate. One end of the drive shaft is fitted into the front end structure of the switch holder through a bearing, and the other end of the drive shaft is fixedly fitted into the inner side of the middle of the ring plate. A protective cylinder is fitted on the outer side of the switch body and installed on the front end surface of the switch holder. The number of strip-shaped cover plates is the same as the number of switch bodies, and the strip-shaped cover plates can cover the open ports of the protective cylinders during the rotation adjustment of the composite protective assembly with the drive shaft as the rotation axis, thereby sealing and protecting the switch bodies inside the protective cylinders.

[0006] Preferably, a rubber ring is fixed to the surface of the open port of the protective cylinder, and a torsion spring is provided on the outer side of the middle part of the transmission shaft. The ends of the torsion spring are respectively fixed to the surface of the middle part of the ring plate and the surface of the front end of the switch seat. When the torsion spring is not under pressure, it can elastically pull the overall structure of the composite protective component so that the strip cover plate covers and aligns with the open port of the protective cylinder.

[0007] Preferably, an auxiliary cover plate is fitted on the outer side of one end of the drive shaft and fixed to the front surface of the switch base. A drive gear and several gear shafts are fitted inside the auxiliary cover plate. The inner side of the middle part of the drive gear is fixedly sleeved on the outer side of the middle part of the drive shaft. Several gear shafts are meshed and connected in sequence, and the gear shaft closest to the drive shaft is meshed and connected with the drive gear.

[0008] Preferably, the internal space of the auxiliary cover plate is connected to the internal space of the hollow base. A dual-axis motor is installed inside the hollow base. A linkage structure is provided between the top output end of the dual-axis motor and the gear shaft furthest from the transmission shaft. The dual-axis motor can drive several gear shafts and transmission gears to rotate synchronously through the linkage structure, so that the transmission gear drives the combination of the transmission shaft and the composite protection component to perform automatic rotation adjustment.

[0009] Preferably, one end of the gear shaft is configured as a smooth rod structure and is fitted into the front end structure of the auxiliary cover plate through a bearing, and there is a clearance space between the other end of the gear shaft and the front end surface of the switch base.

[0010] Preferably, the linkage structure includes a hollow spherical shell, a T-shaped shaft, and an electromagnetic chuck. The output end of the dual-axis motor is connected to one end of the T-shaped shaft, and the other end of the T-shaped shaft and the electromagnetic chuck are respectively mounted on the inner side of the middle of the hollow spherical shell and fixedly sleeved on the inner side of the top of the hollow spherical shell through bearings. An arc-shaped electromagnet is attached to the outer surface of the hollow spherical shell, and the top surface of the hollow spherical shell is connected to the other end of a corresponding gear shaft. A support seat is installed between the shell surface of the arc-shaped electromagnet and the inner wall of the hollow base.

[0011] Preferably, the hollow base inner ring structure has several clearance grooves on both sides, and heat sinks fixed to the surface of the switch base are fitted inside the clearance grooves. Each of the heat sinks has a through groove in the middle.

[0012] Preferably, the hollow base has a third ventilation slot on both sides of its rear end. The ring plate, the several strip-shaped cover plates, and the drive shaft are all hollow and interconnected. The inner wall of one end of the drive shaft has a first ventilation slot that communicates with the internal space of the auxiliary cover plate. The inner wall of one end of each of the several strip-shaped cover plates has a second ventilation slot. Filter screens are nested and fixed inside the second ventilation slot and the third ventilation slot.

[0013] Preferably, a plurality of fan blades are arranged and installed on the bottom output end surface of the dual-axis motor, and an auxiliary bracket is installed between the housing surface of the dual-axis motor and the inner wall of the hollow base.

[0014] Preferably, an L-shaped sleeve plate is fixed to the open port surface of several of the protective cylinders, and a Y-shaped reinforcing plate is fixed to the front end surface of the switch base, with the top surface of the Y-shaped reinforcing plate being attached to the surface of the strip cover plate.

[0015] The present invention has the following beneficial effects:

[0016] 1. By using a combination of a torsion spring, a composite protective assembly, a drive shaft, and multiple protective cylinders with a switch base and multiple switch bodies on the switch base, the composite protective assembly can sequentially cover and seal the open ports of multiple protective cylinders with the support of the drive shaft, thereby providing dustproof and contact-proof protection for the switch bodies inside the protective cylinders. During reciprocating use, the torsion spring allows the composite protective assembly to automatically reset after rotation, solving the problems existing in the prior art.

[0017] 2. The auxiliary cover, transmission gear, multiple gear shafts, dual-axis motor and linkage structure, and fan blades form a multi-functional auxiliary device. After being used in combination with the composite protection component and transmission shaft, the dual-axis motor can actively drive the transmission gear and multiple gear shafts through the linkage structure, thereby enabling the transmission shaft and composite protection component to rotate and adjust automatically, meeting the usage requirements of covering and sealing the switch body or making way for operation, and further optimizing the overall device's performance.

[0018] 3. During continuous use of the switch base and multiple switch bodies, the arc-shaped electromagnet and electromagnetic chuck inside the linkage structure alternately use each other. After the dual-axis motor and the corresponding gear shaft are temporarily disengaged, the dual-axis motor can actively drive multiple fan blades to rotate synchronously. Then, through the flow channel formed by the second ventilation slot, the third ventilation slot, the auxiliary cover plate, the hollow composite protective component, the hollow transmission shaft, and the first ventilation slot, it exchanges and flows with the cold air in the use environment. In addition, the multiple Y-shaped reinforcing plates inside the hollow base provide sufficient heat dissipation protection for the combination of the hollow base, switch base, and switch body, extending the service life of the switch base and switch body and reducing the cost of use.

[0019] 4. By using the L-shaped sleeve plate and Y-shaped reinforcing plate as a linkage locking structure, it can be fitted and locked with the end of the strip cover plate inside the composite protection component based on the structure of the protective cylinder. Subsequently, under the dual limit of the dual-axis motor and the arc-shaped electromagnet, non-designated operators cannot easily open the composite protection component, thus providing higher safety protection for the switch body. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a structural embodiment of the present invention;

[0021] Figure 2 This is a front view schematic diagram of Embodiment 1 of the present invention;

[0022] Figure 3 This is a schematic diagram showing the switch body covering the closed position in the structure of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of the second embodiment of the structure of the present invention;

[0024] Figure 5 This is a front view schematic diagram of the second embodiment of the structure of the present invention;

[0025] Figure 6 This is a cross-sectional schematic diagram of the auxiliary cover plate in the structure of the present invention;

[0026] Figure 7 This is a three-dimensional schematic diagram of the dual-axis motor in the structure of the present invention;

[0027] Figure 8 This is a cross-sectional schematic diagram of the hollow spherical shell in the structure of the present invention;

[0028] Figure 9 This is a partially enlarged schematic diagram of the strip cover plate in the structure of the present invention;

[0029] Figure 10 This is a three-dimensional schematic diagram of the heat sink structure of the present invention;

[0030] Figure 11 This is a three-dimensional schematic diagram of the third embodiment of the structure of the present invention;

[0031] Figure 12 This is a front view of embodiment three of the present invention;

[0032] Figure 13 This is an enlarged schematic diagram of the L-shaped sleeve plate of the present invention;

[0033] Figure 14 This is an enlarged schematic diagram of the Y-shaped reinforcing plate of the present invention.

[0034] In the diagram: 1. Hollow base; 2. Switch base; 3. Switch body; 4. Protective cylinder; 5. Drive shaft; 6. Composite protective assembly; 61. Ring plate; 62. Strip cover plate; 7. Torsion spring; 8. Rubber ring; 9. Auxiliary cover plate; 10. Drive gear; 11. Gear shaft; 12. Dual-shaft motor; 13. Hollow spherical shell; 14. T-shaped shaft; 15. Arc electromagnet; 16. Electromagnetic chuck; 17. First ventilation slot; 18. Second ventilation slot; 19. Fan blade; 20. Heat sink; 21. L-shaped sleeve plate; 22. Y-shaped reinforcing plate; 23. Third ventilation slot. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to preferred embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] like Figures 1-3 An electrical switch for electrical engineering includes a hollow base 1, a switch base 2 is fitted inside the hollow base 1, and a plurality of switch bodies 3 are arranged equidistantly on the surface of the switch base 2. A drive shaft 5 and a composite protection component 6 are provided at the front end of the switch base 2. The composite protection component 6 includes a ring plate 61, and a plurality of strip-shaped cover plates 62 are arranged and installed on the outer ring structure of the ring plate 61. One end of the drive shaft 5 is fitted into the front end structure of the switch base 2 through a bearing, and the other end of the drive shaft 5 is fixedly fitted into the inner side of the middle part of the ring plate 61. A protective cylinder 4 is fitted on the outer side of the switch body 3 and installed on the front end surface of the switch base 2. The number of strip-shaped cover plates 62 is the same as the number of switch bodies 3. During the rotation adjustment of the composite protection component 6 with the drive shaft 5 as the rotation axis, the strip-shaped cover plates 62 can cover the open ports of the protective cylinders 4 and seal and protect the switch bodies 3 inside the protective cylinders 4.

[0038] A rubber ring 8 is fixed to the open port surface of the protective cylinder 4. The rubber ring 8 reduces the friction of the composite protective component 6 covering the protective cylinder 4 and improves the sealing effect of the composite protective component 6 covering the protective cylinder 4. A torsion spring 7 is provided on the outer side of the middle part of the drive shaft 5. The ends of the torsion spring 7 are fixed to the surface of the middle part of the ring plate 61 and the front end of the switch seat 2, respectively. When the torsion spring 7 is not under pressure, it can elastically pull the overall structure of the composite protective component 6 so that the strip cover plate 62 covers and aligns with the open port of the protective cylinder 4. The torsion spring 7 enables the composite protective component 6 to automatically reset under the support of the drive shaft 5, thereby solving the problem of the composite protective component 6 forgetting to reset.

[0039] In use, the composite protective components 6 and protective cylinders 4 are used to uniformly cover and seal or make way for several switch bodies 3. The specific operation is as follows:

[0040] When the switch body 3 needs to be used, the middle part of the composite protection component 6 is turned so that the multiple strip covers 62 inside the composite protection component 6 rotate synchronously with the ring plate 61 to make room. The torsion spring 7 is compressed and deformed to make room until the strip cover 62 makes room for its corresponding switch body 3. After completion, the corresponding switch body 3 is turned on or off. After the operation is completed, the turning force on the composite protection component 6 is released. The ring plate 61 and the multiple strip covers 62 will automatically reset under the reset force of the torsion spring 7, so that the strip cover 62 re-covers and seals its corresponding protective cylinder 4, thereby providing dustproof and contactproof protection for the switch body 3 inside the protective cylinder 4.

[0041] Example 2

[0042] like Figures 4-10 An auxiliary cover plate 9 is fitted on the outer side of one end of the drive shaft 5 and fixed to the front surface of the switch base 2. Inside the auxiliary cover plate 9, there is a drive gear 10 and several gear shafts 11. The inner side of the middle of the drive gear 10 is fixedly sleeved on the outer side of the middle of the drive shaft 5. Several gear shafts 11 are meshed and connected in sequence, and the gear shaft 11 closest to the drive shaft 5 is meshed and connected with the drive gear 10, thereby meeting the long-distance continuous transmission requirements during subsequent use. The internal space of the auxiliary cover plate 9 is connected to the internal space of the hollow base 1. The hollow base 1 is fitted with a dual-axis motor 12. A linkage structure is set between the top output end of the dual-axis motor 12 and the gear shaft 11 furthest from the drive shaft 5. The dual-axis motor 12 can drive several gear shafts 11 to rotate synchronously with the drive gear 10 through the linkage structure, so that the drive gear 10 drives the combination of the drive shaft 5 and the composite protection component 6 to rotate and adjust automatically, thereby improving the automation effect of the overall device.

[0043] One end of the gear shaft 11 is designed as a smooth rod structure and is fitted into the front end structure of the auxiliary cover plate 9 through a bearing. This improves the connection strength between the gear shaft 11 and the auxiliary cover plate 9 while ensuring the continuous and stable transmission effect of the gear shaft 11 in subsequent transmission processes. There is clearance space between the other end of the gear shaft 11 and the front end surface of the switch base 2 to avoid structural interference. The linkage structure includes a hollow spherical shell 13, a T-shaped shaft 14, and an electromagnetic chuck 16. The output end of the dual-axis motor 12 is connected to one end of the T-shaped shaft 14 for transmission, and the other end of the T-shaped shaft 14 and the electromagnetic chuck 16 are respectively fitted into the middle of the hollow spherical shell 13 through bearings. The side and fixed sleeve is attached to the inner side of the top of the hollow spherical shell 13. The outer surface of the hollow spherical shell 13 is attached to the arc surface electromagnet 15, and the top surface of the hollow spherical shell 13 is connected to the other end of the corresponding gear shaft 11. Thus, by using the alternating magnetic attraction between the arc surface electromagnet 15 and the hollow spherical shell 13, the dual-axis motor 12 can be used to continuously drive multiple gear shafts 11, or the dual-axis motor 12 can be connected to the corresponding gear shaft 11 with a clearance. A support seat is installed between the shell surface of the arc surface electromagnet 15 and the inner wall of the hollow base 1 to ensure the stability of the arc surface electromagnet 15 during subsequent long-term use.

[0044] The hollow base 1 has several clearance grooves on both sides of its inner ring structure. Heat sinks 20, fixed to the surface of the switch base 2, are fitted inside these grooves. Each heat sink 20 has a through slot in its center. The hollow base 1 has third ventilation slots 23 on both sides of its rear end. The ring plate 61, several strip-shaped cover plates 62, and the drive shaft 5 are all hollow structures and interconnected. One end of the drive shaft 5 has a first ventilation slot 17 on its inner wall, communicating with the internal space of the auxiliary cover plate 9. Each end of the strip-shaped cover plate 62 has a second ventilation slot 18 on its inner wall. The second ventilation slot 18... Both the first and third ventilation slots 23 have nested and fixed filters inside, which ensures that the air in the operating environment is exchanged with the air inside the hollow base 1. At the same time, the filters inside the second ventilation slot 18 and the third ventilation slot 23 can be used to filter dust from the air flowing into the hollow base 1, further optimizing the overall performance of the device. Several fan blades 19 are arranged and installed on the bottom output end surface of the dual-axis motor 12, and an auxiliary support is installed between the housing surface of the dual-axis motor 12 and the inner wall of the hollow base 1, thereby meeting the requirements for automatic air cooling.

[0045] In use, to allow the switch body 3 to be in place, the electromagnetic chuck 16 is turned on and the arc electromagnet 15 is turned off, so that the electromagnetic chuck 16 magnetically connects to the T-shaped shaft 14. Then, the dual-axis motor 12 is turned on, and the output end of the dual-axis motor 12 drives the corresponding gear shaft 11 to rotate synchronously through the T-shaped shaft 14 and the arc electromagnet 15. Then, under the sequential meshing of multiple gear shafts 11, the transmission gear 10 will drive the composite protection component 6 to rotate as a whole through the transmission shaft 5 until the multiple strip-shaped cover plates 62 inside the composite protection component 6 rotate and make way for the multiple protective cylinders 4 in sequence, thereby providing the operator with the conditions to operate the switch body 3 and turn off the dual-axis motor 12.

[0046] After the switch body 3 is used, the dual-axis motor 12 is restarted. The output end of the dual-axis motor 12 drives the corresponding gear shaft 11 to rotate synchronously through the T-shaped shaft 14 and the arc electromagnet 15. Then, under the sequential meshing of multiple gear shafts 11, the transmission gear 10 will drive the composite protection component 6 to rotate and reset through the transmission shaft 5 until the multiple strip-shaped cover plates 62 inside the composite protection component 6 sequentially cover and seal the multiple protective cylinders 4, thereby providing dustproof and anti-touch protection for the switch body 3 inside the protective cylinder 4.

[0047] For heat dissipation assistance during continuous use of switch base 2 and switch body 3, the electromagnetic chuck 16 is turned off and the arc electromagnet 15 is turned on, so that the electromagnetic chuck 16 is released from the magnetic attraction connection with the T-shaped shaft 14, while the magnetic attraction surface of the arc electromagnet 15 magnetically limits the hollow spherical shell 13.

[0048] The dual-axis motor 12 is started, and the output end of the dual-axis motor 12 drives multiple fan blades 19 to rotate synchronously. Then, the multiple rotating fan blades 19 accelerate the air inside the hollow base 1. Then, the hot air inside the hollow base 1 will exchange with the cold air in the use environment through the flow channel formed by the second ventilation slot 18, the third ventilation slot 23, the auxiliary cover plate 9, the hollow composite protective component 6, the drive shaft 5, and the first ventilation slot 17. In addition, the multiple Y-shaped reinforcing plates 22 inside the hollow base 1 provide sufficient heat dissipation protection for the assembly formed by the hollow base 1, the switch base 2, and the switch body 3, extending the service life of the switch base 2 and the switch body 3 and reducing the use cost.

[0049] Example 3

[0050] like Figures 11-14 Several protective cylinders 4 have L-shaped sleeve plates 21 fixed on their open port surfaces, and Y-shaped reinforcing plates 22 are fixed on the front end surface of the switch base 2. The top surface of the Y-shaped reinforcing plates 22 is attached to the surface of the strip cover plate 62.

[0051] In use, considering the general safety protection needs of the switch body 3 in actual use, the L-shaped sleeve plate 21 and Y-shaped reinforcing plate 22 are used in conjunction with the composite protection component 6 for operation. The specific principle is as follows:

[0052] The electromagnetic chuck 16 is opened and the arc-shaped electromagnet 15 is closed, so that the electromagnetic chuck 16 magnetically connects to the T-shaped shaft 14. Then, under the automatic transmission of the dual-axis motor 12, multiple gear shafts 11 and transmission gears 10, the composite protection component 6 has one end of the strip cover plate 62 inside the composite protection component 6 covering and sealing the open port of the corresponding protective cylinder 4, while the L-shaped sleeve plate 21 engages and limits the end of the strip cover plate 62. After completion, the electromagnetic chuck 16 is closed and the arc-shaped electromagnet 15 is opened, so that the electromagnetic chuck 16 releases the magnetic connection with the T-shaped shaft 14, while the magnetic surface of the arc-shaped electromagnet 15 magnetically limits the hollow spherical shell 13. Thus, under the dual limiting of the dual-axis motor 12 and the arc-shaped electromagnet 15, non-designated operators cannot easily open the composite protection component 6, thereby meeting the general safety protection requirements of the switch body 3 in actual use.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention. The invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrical switch for electrical engineering, comprising a hollow base (1), the inside of which is sleeved with a switch base (2), and the surface of the switch base (2) is equidistantly arranged with a plurality of switch bodies (3), characterized in that: The front end of the switch base (2) is provided with a transmission shaft (5) and a composite protection assembly (6), the composite protection assembly (6) comprises a ring plate (61), a plurality of strip-shaped cover plates (62) are arranged and installed on the outer ring structure of the ring plate (61), one end of the transmission shaft (5) is sleeved in the front end structure of the switch base (2) through a bearing, the other end of the transmission shaft (5) is fixedly sleeved in the inner side of the middle part of the ring plate (61), the outer side of the switch body (3) is sleeved with a protection cylinder (4) installed on the front end surface of the switch base (2), the number of the plurality of strip-shaped cover plates (62) is the same as that of the plurality of switch bodies (3), and the plurality of strip-shaped cover plates (62) can cover the open ports of the plurality of protection cylinders (4) and seal and protect the switch bodies (3) in the protection cylinders (4) during the rotation adjustment of the composite protection assembly (6) with the transmission shaft (5) as the rotating central shaft.

2. An electrical switch for electrical engineering according to claim 1, characterized in that: The open port surface of the protection cylinder (4) is fixedly provided with a rubber ring (8), the outer side of the middle part of the transmission shaft (5) is provided with a torsion spring (7), the ends of the torsion spring (7) are fixed on the surface of the middle part of the ring plate (61) and the surface of the front end of the switch base (2) respectively, and the torsion spring (7) can elastically pull the whole structure of the composite protection assembly (6) in a non-pressurized state, so that the strip-shaped cover plates (62) cover and align the open ports of the protection cylinders (4).

3. An electrical switch for electrical engineering according to claim 1, characterized in that: The outer side of one end of the transmission shaft (5) is sleeved with an auxiliary cover plate (9) fixed on the front end surface of the switch base (2), the inside of the auxiliary cover plate (9) is sleeved with a transmission gear (10) and a plurality of gear shafts (11), the middle inner side of the transmission gear (10) is fixedly sleeved on the outer side of the middle part of the transmission shaft (5), the plurality of gear shafts (11) are sequentially meshed and connected, and the gear shaft (11) closest to the transmission shaft (5) is meshed and connected with the transmission gear (10).

4. An electrical switch for electrical engineering according to claim 3, characterized in that: The internal space of the auxiliary cover plate (9) communicates with the internal space of the hollow base (1), the inside of the hollow base (1) is sleeved with a double-shaft motor (12), a linkage structure is arranged between the top output end of the double-shaft motor (12) and the gear shaft (11) farthest away from the transmission shaft (5), and the double-shaft motor (12) can drive the plurality of gear shafts (11) and the transmission gear (10) to rotate synchronously through the linkage structure, so that the transmission gear (10) drives the combined assembly formed by the transmission shaft (5) and the composite protection assembly (6) to automatically rotate and adjust.

5. An electrical switch for electrical engineering according to claim 3, characterized in that: The end of one end of the gear shaft (11) is provided in a light pole structure and sleeved in the front end structure of the auxiliary cover plate (9) through a bearing, and there is a space between the other end of the gear shaft (11) and the front end surface of the switch base (2).

6. An electrical switch for electrical engineering according to claim 4, characterized in that: The linkage structure comprises a hollow spherical shell (13), a T-shaped shaft (14), and an electromagnetic chuck (16), the output end of the top of the double-shaft motor (12) is in transmission connection with one end of the T-shaped shaft (14), the other end of the T-shaped shaft (14) and the electromagnetic chuck (16) are respectively sleeved in the middle inner side of the hollow spherical shell (13) and fixedly sleeved on the top inner side of the hollow spherical shell (13) through bearing sleeves, the outer side surface of the hollow spherical shell (13) is connected with an arc-surface electromagnet (15) in a matched mode, the top surface of the hollow spherical shell (13) is in transmission connection with the other end of the corresponding one gear shaft (11), and the shell surface of the arc-surface electromagnet (15) is provided with a supporting seat between the inner wall of the hollow base (1).

7. An electrical switch for electrical engineering according to claim 1, characterized in that: The hollow base (1) is provided with a plurality of letting go grooves on the two sides of the inner ring structure, the letting go grooves are sleeved with heat dissipation fins (20) fixed on the surface of the switch seat (2), and the middle portions of the heat dissipation fins (20) are provided with penetrating grooves.

8. An electrical switch for electrical engineering according to claim 1, characterized in that: The two sides of the rear end of the hollow base (1) are provided with third ventilation grooves (23), the ring plate (61), the plurality of strip-shaped cover plates (62) and the transmission shaft (5) are all arranged in a hollow structure and are in communication, the inner wall of one end of the transmission shaft (5) is provided with a first ventilation groove (17) in communication with the inner space of the auxiliary cover plate (9), the inner wall of one end of each of the plurality of strip-shaped cover plates (62) is provided with a second ventilation groove (18), and the inner portions of the second ventilation grooves (18) and the third ventilation grooves (23) are both fixedly provided with filter screens.

9. An electrical switch for electrical engineering according to claim 1, characterized in that: The bottom output end surface of the double-shaft motor (12) is arranged with a plurality of fan blades (19), and the shell surface of the double-shaft motor (12) is provided with an auxiliary support between the inner wall of the hollow base (1).

10. An electrical switch for electrical engineering according to claim 1, characterized in that: The open end surface of each of the plurality of protective barrels (4) is fixedly provided with an L-shaped sleeve plate (21), the front end surface of the switch seat (2) is fixedly provided with a Y-shaped reinforcing plate (22), and the top surface of the Y-shaped reinforcing plate (22) is connected with the surface of the strip-shaped cover plate (62) in a matched mode.

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