Electrified modularized quick plug terminal protection device

Abstract

The invention belongs to the technical field of power equipment connection, and particularly relates to a live-line modularized quick plug terminal protection device, which comprises a transformer substation equipment main body and a plug module, the plugging module comprises a terminal main body, a plugging sheet and a power line; the plurality of insertion sheets are fixedly connected to the inner wall of the terminal main body, and the insertion sheets are matched with the power transformation equipment main body; the power line is installed at one end of the terminal main body away from the insertion sheet. Through the arrangement of an insertion block, a pushing block and a pressing column, in the insertion process, a protective cover extrudes the insertion block, a second spring is compressed, the insertion block moves towards one side away from the protective cover until the insertion groove is aligned with the insertion block, and the insertion block is inserted into the insertion groove under the action of the second spring, so that the protection cover is fixed, the terminal main body is prevented from falling off in the working process, and the service life of the terminal main body is prolonged. The live-line work of the substation equipment main body is influenced; and the sealing ring and the sealing ring are arranged at the two ends of the protective cover correspondingly, sealing of the protective cover is achieved, and therefore water prevention and dust prevention are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power equipment connection, and specifically relates to a protection device for live modular quick plug-in terminals. Background Art

[0002] In modern electrical equipment, modular quick plug-in terminals are widely used in various circuit connection scenarios. Such terminals can achieve quick connection and disconnection between modules and external circuits in a live state, greatly improving the installation, maintenance, and upgrade efficiency of the equipment. However, traditional live modular quick plug-in terminals have some safety hazards and performance problems during use, and protection devices need to be used for protection.

[0003] A Chinese patent with the publication number CN104051869B discloses a plug-in terminal, which includes an insulating housing with an integral structure and a cavity forming a hollow structure, a conductive metal plug-in member disposed in the cavity of the insulating housing, and further includes a flipping handle disposed on the top surface of the insulating housing corresponding to the conductive metal plug-in member; one end of the insulating housing is provided with a wire insertion port corresponding to the conductive metal plug-in member and allowing a wire to be inserted to form a connection with the conductive metal plug-in member, and a flipping handle through groove is provided on the top surface of the insulating housing; the flipping handle is hinged on the flipping handle through groove, the flipping handle is provided with a hinged convex head, and the flipping handle through groove is provided with a groove for mating installation with the hinged convex head; one end of the flipping handle is a pressing end for flipping and pressing the conductive metal plug-in member, and the other end is a handle end. The wiring step of this plug-in terminal does not require disassembling the terminal for wiring, and can be used for both flexible wires and rigid disposable wiring, which is simple and convenient, and the wiring work is simple and the construction efficiency is high.

[0004] In the current prior art, during the use of the above plug-in terminal, it does not have protection for the terminal. Not only is it easy to drop the wire under external force, but also the sealing performance between the insulating housing, the conductive metal plug-in member and the energized equipment is not good, resulting in poor dust and water protection performance and affecting the energized use of the conductive metal plug-in member.

[0005] Therefore, the present invention provides a protection device for live modular quick plug-in terminals. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A charged modular quick plug-in terminal protection device of the present invention includes a substation equipment main body and a plug-in module; the plug-in module includes a terminal main body, insertion pieces, and a power line; a plurality of insertion pieces are provided and fixedly connected to the inner wall of the terminal main body, and the insertion pieces cooperate with the substation equipment main body; the power line is installed at one end of the terminal main body away from the insertion pieces; a protective cover is sleeved on the outer side of the terminal main body; mounting mechanisms are provided on both sides of the protective cover, and the mounting mechanisms include insertion blocks, pushing blocks, and pressing columns; slots are opened on both side walls of the protective cover; the insertion blocks are respectively inserted into the slots, pushing blocks are fixedly connected to the outer walls of the insertion blocks, two movable cavities are opened on the substation equipment main body, and the pushing blocks are respectively movably connected in the movable cavities; two second springs are fixedly connected to the side walls of the insertion blocks, and the second springs are arranged on the same side walls as the pushing blocks; two pressing columns are slidably connected to the substation equipment main body, and one ends of the pressing columns cooperate with the pushing blocks respectively; third springs are sleeved on the outer sides of the pressing columns.

[0008] Preferably, sliding grooves are opened on both outer side walls of the terminal main body, triangular blocks are slidably connected in the sliding grooves, and the triangular blocks are respectively inserted into the inner wall of the protective cover; two first sliding columns are fixedly connected to the side walls of the triangular blocks close to the terminal main body, and one ends of the first sliding columns are slidably connected in the terminal main body; first springs are sleeved on the outer sides of the first sliding columns; two movable grooves are symmetrically opened at one end of the terminal main body close to the insertion pieces; push plates are fixedly connected to the side walls of the triangular blocks, and the push plates are arranged in the movable grooves.

[0009] Preferably, a cavity is opened inside the substation equipment main body; a plurality of contact pieces are arranged in the cavity, and the contact pieces are symmetrically arranged on both sides of the insertion pieces; a plurality of mounting plates are fixedly connected to the inner wall of the cavity, and the side walls of the mounting plates close to the insertion pieces are slidably connected to the four corners of the contact pieces through four third sliding columns; two reset springs are fixedly connected between the contact pieces and the mounting plates.

[0010] Preferably, a temperature sensor and a current sensor are fixedly connected to the inner wall of the cavity; two electromagnetic blocks are fixedly connected to the side walls of the mounting plates close to the contact pieces, and the temperature sensor and the current sensor are electrically connected to the electromagnetic blocks respectively.

[0011] Preferably, a sealing ring is provided between the power line and the protective cover, and a sealing ring is provided between the protective cover and the substation equipment main body.

[0012] Preferably, four limiting blocks are symmetrically and fixedly connected to the side walls of the insertion blocks close to the pushing blocks, and the limiting blocks are respectively slidably connected in the movable cavities.

[0013] Preferably, rotating rods are fixedly connected to the outer walls of the main body of the substation equipment. One end of each rotating rod is rotatably connected to a protective plate, and the protective plates are all arranged outside the pressing columns.

[0014] Preferably, the protective cover is made of an insulating housing, and the insulating housing includes polyether ether ketone and 30% glass fiber, and its arc resistance is greater than 180 s.

[0015] The beneficial effects of the present invention are as follows: 1. For the charged modular quick plug-in terminal protection device of the present invention, by setting the plug block, the pushing block and the pressing column, during the insertion process, the protective cover squeezes the plug block, the second spring is compressed, and the plug block moves to the side away from the protective cover until the slot is aligned with the plug block. Under the action of the second spring, the plug block is inserted into the slot to fix the protective cover, preventing the terminal main body from falling during the working process and affecting the live working of the main body of the substation equipment; and sealing rings and sealing gaskets are respectively arranged at both ends of the protective cover to seal the protective cover, thereby achieving waterproof and dustproof functions.

[0016] 2. For the charged modular quick plug-in terminal protection device of the present invention, by setting the triangular block, during the sleeving process, the protective cover squeezes the triangular block, the triangular block drives the first sliding column to slide, the first spring is compressed, and the triangular block slides in the chute until the protective cover cooperates with the terminal main body. At this time, the triangular block is inserted into the inner wall of the protective cover to install the protective cover and the terminal main body together; when disassembly is required, by pushing the push plate to the side of the insertion piece, the triangular block is driven by the insertion plate to slide into the chute, the triangular block drives the first sliding column to slide, the first spring is compressed, and the triangular block slides in the chute to release the fixation of the protective cover, realizing the function of quick disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a perspective view of the present invention; Figure 2 is an exploded view of the terminal body in the present invention; Figure 3 is a structural schematic diagram of the protective cover in the present invention; Figure 4 is a structural schematic diagram of the pushing block and the plug block in the present invention; Figure 5 is a structural schematic diagram of the terminal body and the protective cover in the present invention; Figure 6 is an enlarged view of part A in the present invention; Figure 7 is an enlarged view of part B in the present invention; Figure 8 is a cross-sectional view of the plug block in the present invention; In the figure: 1. Substation equipment main body; 2. Protective cover; 21. Sealing ring; 3. Power cord; 31. Sealing ring; 32. Terminal main body; 321. Slide groove; 322. Push plate; 323. Triangular block; 324. First sliding column; 325. First spring; 326. Activity groove; 33. Insert piece; 34. Cavity; 341. Mounting plate; 342. Third sliding column; 343. Contact piece; 344. Reset spring; 345. Electromagnetic block; 346. Current sensor; 347. Temperature sensor; 4. Insert block; 41. Second spring; 42. Pushing block; 43. Limit block; 44. Pressing column; 45. Third spring; 46. Rotating rod; 47. Protective plate. Specific embodiments

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] As Figures 1 to 8 shown, a live modular quick-insertion terminal protection device according to an embodiment of the present invention includes a substation equipment main body 1 and an insertion module; the insertion module includes a terminal main body 32, an insert piece 33 and a power cord 3; a plurality of insert pieces 33 are provided and are fixedly connected to the inner wall of the terminal main body 32, and the insert piece 33 cooperates with the substation equipment main body; the power cord 3 is installed at one end of the terminal main body 32 away from the insert piece 33; a protective cover 2 is sleeved outside the terminal main body 32; mounting mechanisms are provided on both sides of the protective cover 2, and the mounting mechanisms include an insert block 4, a pushing block 42 and a pressing column 44; slots are opened on both side walls of the protective cover 2; insert blocks 4 are inserted into the slots, and pushing blocks 42 are fixedly connected to the outer walls of the insert blocks 4, and two activity cavities are opened on the substation equipment main body 1, and the pushing blocks 42 are respectively movably connected in the activity cavities; two second springs 41 are fixedly connected to the side walls of the insert blocks 4, and the second springs 41 are arranged on the same side wall as the pushing blocks 42; two pressing columns 44 are slidably connected to the substation equipment main body 1, and one ends of the pressing columns 44 cooperate with the pushing blocks 42 respectively; third springs 45 are sleeved outside the pressing columns 44.

[0021] When the installation mechanism provided by the present invention is in use, during the process of inserting the terminal body 32, the insertion piece 33 is inserted into the substation equipment body 1. At the same time, the protective cover 2 is inserted into the movable cavity. During the insertion process, the protective cover 2 presses the insertion block 4, and the second spring 41 is compressed. The insertion block 4 moves towards the side away from the protective cover 2. When the slot is aligned with the insertion block 4, under the action of the second spring 41, the insertion block 4 is inserted into the slot to fix the protective cover 2. When it needs to be disassembled, it is necessary to press the pressing column 44 inward. The pressing column 44 presses and pushes the pushing block 42, and the contact surface between the pushing block 42 and the pressing column 44 is set as an inclined surface. During the pressing process, the pressing column 44 moves the pushing block 42 towards the side away from the protective cover 2. The pushing block 42 drives the insertion block 4 to move towards the side away from the protective cover 2, and the insertion block 4 moves away from the slot to release the fixation of the protective cover 2. The second spring 41 and the third spring 45 are both compressed, facilitating the rapid reset of the insertion block 4 and the pressing column 44. By setting the protective cover 2, the terminal body 32 is fixed to prevent the terminal body 32 from falling during operation and affecting the live operation of the substation equipment body 1. Sealing rings 31 and sealing gaskets 21 are respectively arranged at both ends of the protective cover 2 to seal the protective cover 2, thereby achieving waterproofing and dustproofing.

[0022] As Figure 2 and Figure 7 shown, chutes 321 are respectively formed on two outer sidewalls of the terminal body 32. Triangular blocks 323 are slidably connected in the chutes 321, and the triangular blocks 323 are respectively inserted into the inner wall of the protective cover 2. Two first sliding columns 324 are fixedly connected to the sidewalls of the triangular blocks 323 close to the terminal body 32. One ends of the first sliding columns 324 are slidably connected in the terminal body 32. First springs 325 are sleeved on the outer sides of the first sliding columns 324. Two movable slots 326 are symmetrically formed at one end of the terminal body 32 close to the insertion piece 33. Push plates 322 are fixedly connected to the sidewalls of the triangular blocks 323, and the push plates 322 are arranged in the movable slots 326.

[0023] When the triangular block 323 provided by the present invention is in use, by arranging the triangular block 323 between the protective cover 2 and the terminal body 32, it is convenient for the installation and disassembly between the protective cover 2 and the terminal body 32. During the installation process, it is necessary to sleeved the protective cover 2 on the outside of the terminal body 32 through one end of the power cord 3. During the sleeving process, by the protective cover 2 squeezing the triangular block 323, the triangular block 323 drives the first sliding column 324 to slide, and the first spring 325 is compressed. The triangular block 323 slides in the chute 321 until when the protective cover 2 and the terminal body 32 are in cooperation, the triangular block 323 is inserted into the inner wall of the protective cover 2, so as to install the protective cover 2 and the terminal body 32 together; when it is necessary to disassemble, by pushing the push plate 322 to one side of the insertion piece 33, the triangular block 323 is driven by the insertion plate to slide into the chute 321. The triangular block 323 drives the first sliding column 324 to slide, and the first spring 325 is compressed. The triangular block 323 slides in the chute 321 to release the fixation of the protective cover 2, realizing the function of quick disassembly.

[0024] As Figure 6 shown, a cavity 34 is formed inside the main body 1 of the substation equipment; a plurality of contact pieces 343 are arranged in the cavity 34, and the contact pieces 343 are symmetrically arranged on both sides of the insertion piece 33; a plurality of mounting plates 341 are fixedly connected to the inner wall of the cavity 34, and the side walls of the mounting plates 341 close to the insertion piece 33 are all slidably connected to the four corners of the contact piece 343 through four third sliding columns 342; two reset springs 344 are fixedly connected between the contact piece 343 and the mounting plate 341.

[0025] When the contact piece 343 provided by the present invention is in use, it forms an energized circuit with the insertion piece 33. During the insertion process of the insertion piece 33, by the insertion piece 33 squeezing the contact piece 343, the contact piece 343 is squeezed to both sides. The contact piece 343 slides on the third sliding column 342, and the reset spring 344 is compressed. When the insertion piece 33 is inserted to the bottom, the insertion stops. Under the action of the reset spring 344 on both sides, the insertion piece 33 is tightly fixed, so as to conduct electricity.

[0026] As Figure 6 shown, a temperature sensor 347 and a current sensor 346 are fixedly connected to the inner wall of the cavity 34; two electromagnetic blocks 345 are fixedly connected to the side walls of the mounting plates 341 close to the contact piece 343, and the temperature sensor 347 and the current sensor 346 are respectively electrically connected to the electromagnetic blocks 345.

[0027] When the temperature sensor 347 and current sensor 346 provided by the present invention are in use, they are used to monitor the current and temperature of the contact piece 343 and the insertion piece 33. When any abnormal value of the current or temperature occurs, signals are transmitted to the control system through the temperature sensor 347 and current sensor 346. The control system energizes the electromagnetic block 345, and the contact piece 343 is attracted to one side by the electromagnetic block 345 and separated from the insertion piece 33 to cut off the power, preventing the terminal body 32 or the insertion piece 33 from being burned due to abnormal temperature or current.

[0028] As Figure 1 and Figure 2 shown, a sealing ring 31 is provided between the power cord 3 and the protective cover 2, and a sealing ring 21 is provided between the protective cover 2 and the main body 1 of the substation equipment.

[0029] The sealing ring 31 and sealing ring 21 provided by the present invention are used to seal the protective cover 2 during use to prevent water vapor or dust from entering the inside of the protective cover 2. Both the sealing ring 31 and the sealing ring 21 are made of silicone rubber material.

[0030] As Figure 4 shown, four limiting blocks 43 are symmetrically and fixedly connected to the side wall of the insertion block 4 close to the pushing block 42, and the limiting blocks 43 are respectively slidably connected in the movable cavity.

[0031] When the limiting block 43 provided by the present invention is in use, during the sliding process of the insertion block 4, the insertion block 4 drives the limiting block 43 to slide, and the sliding block slides in the movable cavity to limit the insertion block 4 to move in the vertical direction.

[0032] As Figure 4 shown, a rotating rod 46 is fixedly connected to the outer wall of the main body 1 of the substation equipment, and one end of the rotating rod 46 is rotatably connected to a protective plate 47, and the protective plates 47 are respectively arranged outside the pressing columns 44.

[0033] When the protective plate 47 provided by the present invention is in use, after the pressing column 44 finishes working, the protective plate 47 needs to be rotated to one side of the pressing column 44 to prevent external force from pressing on the pressing column 44.

[0034] As Figure 1 shown, the protective cover 2 is made of an insulating housing, and the insulating housing includes polyether ether ketone and 30% glass fiber, and its arc resistance is greater than 180 s.

[0035] The insulating housing provided by the present invention is used to provide excellent arc resistance performance during use. Polyetheretherketone itself has a certain arc resistance. The benzene rings and ether bonds in its molecular structure endow it with high chemical stability and thermal stability. Under the action of an arc, polyetheretherketone can absorb part of the energy and slow down the erosion rate of the arc on the material. After adding 30% of glass fiber, the arc resistance of the material is further enhanced. The glass fiber can form a framework structure in the material, disperse the energy generated by the arc, prevent the arc from concentrating in a local area and causing excessive damage to the material. At the same time, the heat insulation performance of the glass fiber can also prevent the conduction of arc heat to the interior of the material to a certain extent and protect the internal structure of the material. Even in the case of arc discharge, the material has enough time to withstand the impact of the arc and will not be easily punctured or damaged by the arc, providing reliable protection for substation equipment.

[0036] Working principle: During the process of inserting the plug-in terminal body 32, the insertion piece 33 is inserted into the substation equipment body 1. At the same time, the protective cover 2 is inserted into the movable cavity. During the insertion process, the protective cover 2 squeezes the insertion block 4, and the second spring 41 is compressed. The insertion block 4 moves away from the protective cover 2 until the slot is aligned with the insertion block 4. Under the action of the second spring 41, the insertion block 4 is inserted into the slot to fix the protective cover 2. When it needs to be disassembled, it is necessary to press the pressing column 44 inward. The pressing column 44 squeezes the pushing block 42, and the contact surface between the pushing block 42 and the pressing column 44 is set as an inclined surface. During the squeezing process, the pressing column 44 moves the pushing block 42 away from the protective cover 2. The pushing block 42 drives the insertion block 4 to move away from the protective cover 2, and the insertion block 4 moves away from the slot to release the fixation of the protective cover 2. The second spring 41 and the third spring 45 are both compressed, facilitating the rapid reset of the insertion block 4 and the pressing column 44. By setting the protective cover 2, the fixation of the terminal body 32 is realized, preventing the terminal body 32 from falling during the working process and affecting the live working of the substation equipment body 1. By setting the triangular block 323 between the protective cover 2 and the terminal body 32, it is convenient for the installation and disassembly between the protective cover 2 and the terminal body 32. During the installation process, it is necessary to sleeved the protective cover 2 through one end of the power cord 3 on the outside of the terminal body 32. During the sleeving process, the protective cover 2 squeezes the triangular block 323, and the triangular block 323 drives the first sliding column 324 to slide, and the first spring 325 is compressed. The triangular block 323 slides in the chute 321 until the protective cover 2 cooperates with the terminal body 32, and the triangular block 323 is inserted into the inner wall of the protective cover 2 to install the protective cover 2 and the terminal body 32 together. When it needs to be disassembled, by pushing the push plate 322 towards the insertion piece 33, the triangular block 323 is driven to slide into the chute 321 through the insertion plate. The triangular block 323 drives the first sliding column 324 to slide, and the first spring 325 is compressed. The triangular block 323 slides in the chute 321 to release the fixation of the protective cover 2 and realize the function of rapid disassembly. During the insertion process of the insertion piece 33, the contact piece 343 is squeezed by the insertion piece 33 and is squeezed to both sides. The contact piece 343 slides on the third sliding column 342, and the return spring 344 is compressed. When the insertion piece 33 is inserted to the bottom, the insertion stops. Under the action of the return spring 344, the contact pieces 343 on both sides tightly fix the insertion piece 33, so as to conduct electricity. When the temperature sensor 347 and the current sensor 346 are in use, they are used to monitor the current and temperature of the contact piece 343 and the insertion piece 33. When any one of the current or temperature values is abnormal, the signals are transmitted to the control system through the temperature sensor 347 and the current sensor 346. The control system energizes the electromagnet block 345, and the contact piece 343 is attracted to one side by the electromagnet block 345 and separated from the insertion piece 33 to cut off the power, preventing the terminal body 32 or the insertion piece 33 from being burned due to abnormal temperature or current.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A charged modular quick plug-in terminal protection device, comprising a substation equipment main body (1) and a plug-in module; the plug-in module includes a terminal main body (32), a plug piece (33) and a power line (3); a plurality of plug pieces (33) are provided and fixedly connected to the inner wall of the terminal main body (32), and the plug pieces (33) cooperate with the substation equipment main body; the power line (3) is installed at one end of the terminal main body (32) away from the plug piece (33); a protective cover (2) is sleeved outside the terminal main body (32); mounting mechanisms are provided on both sides of the protective cover (2), and it is characterized in that: The installation mechanism includes insertion blocks (4), pushing blocks (42), and pressing columns (44); slots are formed on both side walls of the protective cover (2); insertion blocks (4) are inserted into the slots, pushing blocks (42) are fixedly connected to the outer walls of the insertion blocks (4), two moving cavities are formed on the main body of the substation equipment (1), and the pushing blocks (42) are respectively movably connected in the moving cavities; two second springs (41) are fixedly connected to the side walls of the insertion blocks (4), and the second springs (41) and the pushing blocks (42) are arranged on the same side wall; two pressing columns (44) are slidably connected to the main body of the substation equipment (1), and one ends of the pressing columns (44) cooperate with the pushing blocks (42) respectively; third springs (45) are sleeved outside the pressing columns (44).

2. The protection device for a live modular quick plug-in terminal according to claim 1, wherein: Chutes (321) are formed on both outer side walls of the terminal body (32), triangular blocks (323) are slidably connected in the chutes (321), and the triangular blocks (323) are respectively inserted into the inner wall of the protective cover (2); two first sliding columns (324) are fixedly connected to the side walls of the triangular blocks (323) close to the terminal body (32), and one ends of the first sliding columns (324) are slidably connected in the terminal body (32); first springs (325) are sleeved outside the first sliding columns (324); two moving slots (326) are symmetrically formed at one end of the terminal body (32) close to the insertion piece (33); push plates (322) are fixedly connected to the side walls of the triangular blocks (323), and the push plates (322) are arranged in the moving slots (326).

3. The protection device for a live modular quick plug-in terminal according to claim 2, characterized in that: A cavity (34) is formed inside the main body of the substation equipment (1); a plurality of contact pieces (343) are arranged in the cavity (34), and the contact pieces (343) are symmetrically arranged on both sides of the insertion piece (33); a plurality of mounting plates (341) are fixedly connected to the inner wall of the cavity (34), and the side walls of the mounting plates (341) close to the insertion piece (33) are respectively slidably connected to the four corners of the contact pieces (343) through four third sliding columns (342); two reset springs (344) are fixedly connected between the contact pieces (343) and the mounting plates (341).

4. A charged modular quick plug-in terminal protection device according to claim 3, characterized in that: A temperature sensor (347) and a current sensor (346) are fixedly connected to the inner wall of the cavity (34); two electromagnetic blocks (345) are fixedly connected to the side walls of the mounting plates (341) close to the contact pieces (343), and the temperature sensor (347) and the current sensor (346) are electrically connected to the electromagnetic blocks (345) respectively.

5. The protection device for a live modular quick-connect terminal according to claim 4, characterized in that: A sealing ring (31) is arranged between the power cord (3) and the protective cover (2), and a sealing ring (21) is arranged between the protective cover (2) and the main body of the substation equipment (1).

6. The protection device for a live modular quick plug-in terminal according to claim 5, characterized in that: Four limiting blocks (43) are symmetrically and fixedly connected to the side walls of the insertion blocks (4) close to the pushing blocks (42), and the limiting blocks (43) are respectively slidably connected in the moving cavities.

7. The protection device for a live modular quick-connect terminal according to claim 6, wherein: The outer walls of the main body (1) of the substation equipment are fixedly connected with rotating rods (46), and one ends of the rotating rods (46) are rotatably connected with protective plates (47), and the protective plates (47) are arranged outside the pressing columns (44).

8. The protection device for a live modular quick plug-in terminal according to claim 7, characterized in that: The protective cover (2) is made of an insulating housing, and the insulating housing includes polyether ether ketone and 30% glass fiber, and its arc resistance is greater than 180 s.

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