Relay contact protection structure

Abstract

The invention discloses a relay contact protection structure, and belongs to the technical field of relays, the relay contact protection structure comprises a relay body, a wiring groove is reserved in the relay body, a dismounting groove corresponding to the wiring groove is formed in the relay body, a wiring bolt is rotatably connected in the dismounting groove, a wiring assembly is embedded in the wiring groove, and the wiring assembly is connected with the wiring groove. A plurality of upper wiring grid plates of the wiring assembly and a plurality of inclined lower wiring grid plates are combined to form arc extinguishing grid sheets, and the relay body is connected with a first protection assembly corresponding to the wiring groove. When the relay works, the supporting spring starts to do elastic reset motion, the supporting spring pushes the spherical valve to enter the bucket-shaped cover to form a plugging effect, the wiring groove of the relay body is in a state tending to be vacuum and works with vacuum as an arc extinguishing medium, gas in the vacuum is very thin, and the free stroke of electrons is far larger than the distance between the contacts.

Description

Technical Field

[0001] The invention belongs to the technical field of relays, and in particular relates to a relay contact protection structure. Background Art

[0002] Relays are important components in the power system. The stability and reliability of their contacts are directly related to the safe operation of the entire system. Contact protection is designed to prevent the contacts from being damaged or failing due to external forces, dust intrusion, moisture corrosion, arc discharge and other factors, thereby extending the service life of the relays and improving the stability and reliability of the system.

[0003] The prior art discloses some invention patents in the field of relay technology, among which the invention patent with publication number CN112992603A discloses a relay contact protection structure and a protection method thereof, belonging to the field of relays, including a substrate, a protective cover, a housing and a relay body, a transmission device is connected to the bottom wall of a first fixed plate, a first sliding rod is connected to the end of the transmission device away from the first fixed plate, a transmission assembly includes a fixed rod, one end of the fixed rod is connected to the outer wall of the sliding device, the other end of the fixed rod is connected to the second fixed plate, a third sliding rod is connected to the bottom wall of the second fixed plate, a limiting device is connected to the inner wall of the fixed frame, the outer wall of the limiting device is connected to the first connecting plate, and a relay body is connected to the top wall of the relay body. There is a placement plate, and a water-absorbing fiber board is connected to the top wall of the placement plate. This technical solution has a simple structure and is easy to operate. It can effectively prevent the abnormal phenomenon that the line at the bottom of the wiring point is loose when the relay body is pulled by external force, and can also protect the connection point. This technical solution still has some shortcomings in the process of application. Although dust and water molecules can be prevented from entering the inside of the relay, the contact switch of the relay will generate an arc when it is closed and opened. The size of the arc increases with the size of the current. Especially in DC control systems, the phenomenon of arc generation is more serious. The generation of a larger arc will cause: ablation of contacts, electromagnetic interference, increased losses and reduced overcharge.

[0004] Based on this, the present invention designs a relay contact protection structure to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that although the existing relay contact protection structure can prevent dust and water molecules from entering the interior of the relay, the relay contact switch will generate an arc when closing and opening, and the size of the arc increases with the size of the current. Especially in a DC control system, the phenomenon of arc generation is more serious. The generation of a larger arc will cause: contact erosion, electromagnetic interference, increased loss and reduced overcharge. A relay contact protection structure is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A relay contact protection structure, comprising a relay body, a wiring slot reserved on the relay body, a disassembly slot corresponding to the wiring slot, a wiring bolt rotatably connected in the disassembly slot, a wiring assembly embedded in the wiring slot, a plurality of upper wiring grids of the wiring assembly and a plurality of inclined lower wiring grids are combined to form an arc extinguishing grid; A first protective component is connected to the corresponding wiring slot on the relay body. After the external wire passes through the first wiring hole and the second wiring hole of the first protective component in sequence and is connected to the wiring slot, the protective box of the first protective component forms a space of its own, and the first protective component has a second protective component built in. The two booster plates of the second protective component are close to each other to support the external wire and draw air in the wiring slot.

[0007] As a further description of the above technical solution: The wiring assembly includes an upper wiring head embedded in the upper inner side of a wiring slot, a threaded hole is formed on the upper wiring head, the wiring bolt is threadedly connected to the threaded hole, a plurality of upper wiring grids are connected to the bottom of the upper wiring head, a plurality of upper wiring grids are tilted outwardly, a lower wiring head is connected to the inner bottom of the wiring slot, and a plurality of lower wiring members are connected to the lower wiring head.

[0008] As a further description of the above technical solution: The lower wiring member includes two adapter side plates connected to the lower wiring head, and the two adapter side plates are rotatably connected with the same adapter shaft. The lower wiring grid is sleeved on the adapter shaft, and two adapter springs are sleeved on the adapter shaft. The adapter shaft is elastically connected to the two adapter side plates respectively through the two adapter springs.

[0009] As a further description of the above technical solution: The first protective component includes a protective box connected to the relay body by bolts, a sealing gasket is connected between the protective box and the relay body, the first wiring hole corresponds to the wiring groove opened on the side end surface of the protective box, a protective plate is installed in the port of the protective box, and the second wiring hole corresponds to the first wiring hole opened on the protective plate.

[0010] As a further description of the above technical solution: A one-way shut-off piece is clamped at the corner of the side end face of the protective plate, and the one-way shut-off piece includes a suction pipe clamped at the corner of the side end face of the protective plate, a bucket-shaped cover is sleeved in the port of the suction pipe, a ball valve is sleeved in the bucket-shaped cover, a movable shaft is connected to the side end face of the ball valve, a mesh panel is sleeved on the other end of the movable shaft, the mesh panel is sleeved in the suction pipe, a support spring is sleeved on the movable shaft, and the ball valve is elastically supported and connected to the mesh panel through the support spring.

[0011] As a further description of the above technical solution: The second protective component includes a first rubber membrane and a second rubber membrane sealed and connected to the protective box, the first rubber membrane and the second rubber membrane are respectively located on the upper and lower sides of the first wiring hole, and the first booster and the second booster are sleeved in the protective box and located on both sides of the first rubber membrane and the second rubber membrane. The first booster and the second booster have the same structure, and the first booster includes a booster plate sleeved in the protective box, and nano sand is filled between the booster plate and the first rubber membrane. A plurality of telescopic rods are connected to a side of the booster plate facing away from the first rubber membrane, and the other ends of the plurality of telescopic rods are sleeved with telescopic sleeves, and the other ends of the plurality of telescopic sleeves are connected to the inner bottom of the protective box.

[0012] As a further description of the above technical solution: The second protection assembly further comprises two booster driving members for driving the first booster member and the second booster member to approach each other, the booster driving member comprises a slide rail connected to the inner bottom of the protection box, a track seat is slidably sleeved on the slide rail, and a slide rod is connected to the track seat; Both sides of the bottom of the boost plate are connected with side support plates, and the opposite surfaces of the two side support plates are provided with track grooves, and the two ends of the sliding rod are respectively slidably connected in the two track grooves.

[0013] As a further description of the above technical solution: The side end surface of the protective box is provided with a driving groove corresponding to the two boost driving parts, and a driving assembly for providing power to the two boost driving parts is installed in the driving groove, and the driving assembly includes a threaded rod rotatably connected to the inner end surface of the driving groove, a threaded cylinder is threadedly connected to the threaded rod, and the threaded cylinder is connected to the slide rail seat, and driven gears are installed in the corresponding driving grooves on the two screw rods, and a driving shaft is rotatably connected to the two driven gears in the driving groove, and a driving gear is installed on the driving shaft, and a toothed belt is transmission-connected between the driving gear and the two driven gears, and a cover is sealingly connected to the side end surface of the driving groove.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, the air in the wiring slot is sucked into the protective box through the suction pipe. When the two booster plates stop moving, the support spring starts to perform elastic reset movement, and the support spring pushes the spherical valve to rush into the bucket-shaped cover, forming a blocking effect, so that the wiring slot of the relay body forms a vacuum state, and works with vacuum as the arc extinguishing medium. The gas in the vacuum is very thin, and the free travel of the electrons is much larger than the distance between the contacts, thereby ensuring the rapid extinction of the arc.

[0015] 2. In the present invention, the two booster plates are close to each other, and the first rubber film and the second rubber film are deformed under the action of pressure and wrapped around the external wire. Since the two booster plates are filled with nano sand between the first rubber film and the second rubber film, the nano sand has a certain fluidity. Under the action of the pressure of the booster plates, the nano sand squeezes the first rubber film and the second rubber film and tightly wraps around the external wire, forming a good sealing effect, preventing external moisture and dust from entering the wiring slot, thereby being able to provide good protection for the wiring contacts of the relay body.

[0016] 3. In the present invention, the spacing between the multiple upper wiring grids and the multiple lower wiring grids is adjusted until the multiple lower wiring grids tend to be parallel to the multiple upper wiring grids. Compared with the previous method in which electricians insert the external wires into the wiring slots with one hand and use a screwdriver with the other hand to twist the wiring bolts, it is possible to avoid the phenomenon that the external wires fall off before they are completely fixed. The multiple upper wiring grids and the multiple lower wiring grids form a grid arc extinguishing structure, thereby avoiding the occurrence of adverse phenomena such as electric shock and ablation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a relay contact protection structure proposed by the present invention; Figure 2 A schematic structural diagram of a first protection component in a relay contact protection structure proposed by the present invention; Figure 3 This is a schematic structural diagram of a one-way current cutoff member in a relay contact protection structure proposed by the present invention after being disassembled; Figure 4 A schematic structural diagram of a second protection component in a relay contact protection structure proposed by the present invention; Figure 5 A schematic diagram of the structure of a driving slot in a relay contact protection structure proposed by the present invention; Figure 6 A schematic diagram of the structure inside a protection box in a relay contact protection structure proposed by the present invention; Figure 7 A schematic diagram of the structure of a relay contact protection structure proposed by the present invention after being disassembled; Figure 8 A relay contact protection structure proposed by the present invention Figure 7 The structural diagram of the middle wiring assembly; Fig. 9 This is a structural schematic diagram of a relay contact protection structure proposed by the present invention after being disassembled from another perspective.

[0018] Legend: 1. Relay body; 2. Wiring slot; 3. Disassembly slot; 4. Wiring bolt; 5. Wiring assembly; 501. Upper terminal head; 502. Upper wiring grid; 503. Lower terminal head; 504. Lower wiring piece; 5041. Lower wiring grid; 5042. Transfer shaft; 5043. Transfer side plate; 5044. Transfer spring; 6. First protective assembly; 601. Sealing pad; 602. Protective box; 603. First wiring hole; 604. Protective plate; 605. Second wiring hole; 606. One-way shutoff piece; 6061. Suction pipe; 6062. Bucket cover; 6063. Ball valve; 6064. Movable shaft; 6065 , support spring; 6066, mesh panel; 7, second protective component; 701, first rubber membrane; 702, first booster; 7021, booster plate; 7022, telescopic rod; 7023, telescopic sleeve; 703, second booster; 704, second rubber membrane; 705, booster drive; 7051, slide rail; 7052, track seat; 7053, slide rod; 7054, side support plate; 7055, track groove; 706, nano sand; 8, drive assembly; 801, threaded rod; 802, driven gear; 803, drive shaft; 804, toothed belt; 805, driving gear; 806, cover; 9, drive groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Fig. 9 The present invention provides a technical solution: a relay contact protection structure, comprising a relay body 1, a wiring slot 2 is reserved on the relay body 1, a disassembly slot 3 is provided on the relay body 1 corresponding to the wiring slot 2, a wiring bolt 4 is rotatably connected in the disassembly slot 3, a wiring assembly 5 is embedded in the wiring slot 2, and a plurality of upper wiring grid plates 502 of the wiring assembly 5 and a plurality of inclined lower wiring grid plates 5041 are combined to form an arc extinguishing grid; A first protective component 6 is connected to the corresponding wiring slot 2 on the relay body 1. After the external wire passes through the first wiring hole 603 and the second wiring hole 605 of the first protective component 6 in sequence and is connected to the wiring slot 2, the protective box 602 of the first protective component 6 forms a space of its own, and the first protective component 6 has a second protective component 7 built in. The two booster plates 7021 of the second protective component 7 are close to each other to support the external wire and suck the air in the wiring slot 2.

[0021] Specifically, the wiring assembly 5 includes an upper wiring head 501 embedded in the upper inner side of the wiring slot 2, a threaded hole is opened on the upper wiring head 501, and the wiring bolt 4 is threadedly connected in the threaded hole, multiple upper wiring grids 502 are connected to the bottom of the upper wire joint, and multiple upper wiring grids 502 are arranged outwardly inclined, and the inner bottom of the wiring slot 2 is connected to a lower wiring head 503, and the lower wiring head 503 is connected to multiple lower wiring members 504, and the lower wiring members 504 include two transfer side plates 5043 connected to the lower wiring head 503, and the same transfer shaft 5042 is rotatably connected between the two transfer side plates 5043, and the lower wiring grid 5041 is sleeved on the transfer shaft 5042, and two transfer springs 5044 are sleeved on the transfer shaft 5042, and the transfer shaft 5042 is elastically transferred to the two transfer side plates 5043 respectively through the two transfer springs 5044.

[0022] The specific implementation method is as follows: when the relay body 1 is connected to an external wire, the end of the external wire is inserted into the first wiring hole 603, and the external wire is pushed to pass through the second wiring hole 605. The external wire is pushed continuously, and the end of the external wire enters the wiring slot 2 and directly enters between the upper wiring grid 502 and the lower wiring grid 5041. Since the upper wiring grid 502 is in a fixed state, when the lower wiring grid 5041 receives the push from the external wire, the lower wiring grid 5041 rotates on the inner side of the transfer side plate 5043 through the transfer shaft 5042, and twists the transfer spring 5044 to cause it to undergo elastic deformation, and multiple lower wiring grids 5041 tilt toward the inner side of the wiring slot 2. The lower wiring grids 5041 are inclined, and after inclination, they are parallel to the upper wiring grids 502. If the inclination angle of the lower wiring grids 5041 is too large or too small, it means that the external wires are too thick or too thin. By twisting the wiring bolts 4 to adjust the rotation in the threaded holes, the spacing between the upper wiring grids 502 and the lower wiring grids 5041 is adjusted until the lower wiring grids 5041 are parallel to the upper wiring grids 502. The electrical connection installation of the external wires is completed. Then, the protective box 602 is installed on the relay body 1 using screws and bolts. The protective box 602 is installed afterward, which is convenient for observing the inclination angles of the lower wiring grids 5041.

[0023] Specifically, the first protection component 6 includes a protection box 602 connected to the relay body 1 by bolts, a sealing gasket 601 is connected between the protection box 602 and the relay body 1, a first wiring hole 603 is corresponding to the wiring slot 2 and is opened on the side end surface of the protection box 602, a protection plate 604 is set in the port of the protection box 602, a second wiring hole 605 is corresponding to the first wiring hole 603 and is opened on the protection plate 604, a one-way shut-off piece 606 is clamped at the corner of the side end surface of the protection plate 604, and the one-way shut-off piece 606 includes a one-way shut-off piece 606 clamped on the protection plate 604. A suction pipe 6061 is provided at the corner of the side end face of the guard plate 604, and a bucket-shaped cover 6062 is sleeved in the port of the suction pipe 6061, a ball valve 6063 is sleeved in the bucket-shaped cover 6062, a movable shaft 6064 is connected to the side end face of the ball valve 6063, a mesh panel 6066 is sleeved on the other end of the movable shaft 6064, the mesh panel 6066 is sleeved in the suction pipe 6061, a support spring 6065 is sleeved on the movable shaft 6064, and the ball valve 6063 is elastically supported and connected to the mesh panel 6066 via the support spring 6065.

[0024] The specific implementation method is as follows: when the two booster plates 7021 approach each other, the pressure on the two sides of the protective box 602 corresponding to the booster plates 7021 that are away from each other is reduced. Under the action of low pressure, the ball valve 6063 moves in the direction away from the bucket-shaped cover 6062, and the ball valve 6063 pushes the movable shaft 6064 to slide in the mesh panel 6066, and squeezes the support spring 6065 to make it elastically deformed, and the air in the wiring slot 2 is sucked into the protective box 602 through the suction pipe 6061. When the two booster plates 7021 stop moving, the support spring 6065 starts to perform elastic reset movement, and the support spring 6065 pushes the ball valve 6063 to rush into the bucket-shaped cover 6062, forming a blocking effect to prevent the air sucked into the protective box 602 from flowing back, so that the wiring slot 2 of the relay body 1 forms a vacuum state, and works with vacuum as the arc extinguishing medium. The gas in the vacuum is very thin, and the free travel of the electrons is much larger than the distance between the contacts, thereby ensuring the rapid extinction of the arc.

[0025] Specifically, the second protection component 7 includes a first rubber membrane 701 and a second rubber membrane 704 which are sealed and connected to the protection box 602. The first rubber membrane 701 and the second rubber membrane 704 are respectively located at the upper and lower sides of the first wiring hole 603. The first booster 702 and the second booster 703 located at both sides of the first rubber membrane 701 and the second rubber membrane 704 are sleeved in the protection box 602. The first booster 702 and the second booster 703 have the same structure. The first booster 702 includes a booster plate 7021 sleeved in the protection box 602. Nanoparticles are filled between the booster plate 7021 and the first rubber membrane 701. Misha 706, a side of the boost plate 7021 facing away from the first rubber membrane 701 is connected to a plurality of telescopic rods 7022, the other ends of the plurality of telescopic rods 7022 are sleeved with telescopic sleeves 7023, the other ends of the plurality of telescopic sleeves 7023 are connected to the inner bottom of the protection box 602, the second protection assembly 7 also includes two boost driving members 705 for driving the first boost member 702 and the second boost member 703 to approach each other, the boost driving member 705 includes a slide rail 7051 connected to the inner bottom of the protection box 602, a track seat 7052 is slidably sleeved on the slide rail 7051, and a slide rod 7053 is connected to the track seat 7052; The two sides of the bottom of the boost plate 7021 are connected to side support plates 7054, and the opposite surfaces of the two side support plates 7054 are provided with track grooves 7055. The two ends of the slide rod 7053 are respectively slidably connected to the two track grooves 7055. The side end surface of the protective box 602 is provided with a driving groove 9 corresponding to the two boost drive members 705. The driving groove 9 is equipped with a driving assembly 8 for providing power to the two boost drive members 705. The driving assembly 8 includes a rotating connection to the inner end surface of the driving groove 9. A threaded rod 801 is threadedly connected to a threaded barrel, which is connected to a seat of a slide rail 7051. Driven gears 802 are mounted in the corresponding driving grooves 9 on the two screw rods. The two corresponding driven gears 802 in the driving groove 9 are rotatably connected to a driving shaft 803. A driving gear 805 is mounted on the driving shaft 803. A toothed belt 804 is transmission-connected between the driving gear 805 and the two driven gears 802. A sealing cover 806 is sealingly connected to the side end surface of the driving groove 9.

[0026] The specific implementation method is as follows: after the external wire is connected to the wiring slot 2, the protective box 602 is first installed on the relay body 1, and then the driving shaft 803 is twisted with a tool to drive the active gear 805 to rotate. The active gear 805 drives the two driven gears 802 at the same time through the tooth surface belt 804. The driven gear 802 drives the threaded rod 801 to rotate in the threaded cylinder, and the threaded cylinder drives the track seat 7052 to slide on the slide rail 7051. Since the height of the sliding rod 7053 on the track seat 7052 remains unchanged, the track seat 7052 drives the sliding rod 7053 to slide in the track groove 7055 on the side support plate 7054. During this process, the two booster plates 7021 approach each other, and the first The rubber film 701 and the second rubber film 704 are deformed under the action of pressure and wrapped around the external wire. Since the two booster plates 7021 are filled with nano sand 706 between the first rubber film 701 and the second rubber film 704, the nano sand 706 has a certain fluidity. Under the action of the pressure of the booster plate 7021, the nano sand 706 squeezes the first rubber film 701 and the second rubber film 704 tightly wrapped around the external wire, forming a good sealing effect to prevent external moisture and dust from entering the wiring slot 2, thereby being able to provide good protection for the wiring contacts of the relay body 1, and at the same time further reinforce the external wire to prevent the external wire from falling off.

[0027] Working principle, when using: When the relay body 1 is connected to an external wire, the end of the external wire is inserted into the first wiring hole 603, and the external wire is pushed through the second wiring hole 605. The external wire is pushed continuously, and the end of the external wire enters the wiring slot 2 and directly enters between the upper wiring grid 502 and the lower wiring grid 5041. Since the upper wiring grid 502 is in a fixed state, when the lower wiring grid 5041 receives the push from the external wire, the lower wiring grid 5041 rotates on the inner side of the transfer side plate 5043 through the transfer shaft 5042, and twists the transfer spring. The spring 5044 causes elastic deformation, and the multiple lower wiring grids 5041 tilt toward the inner side of the wiring slot 2, and the tilted multiple lower wiring grids 5041 are parallel to the multiple upper wiring grids 502. If the tilt angle of the lower wiring grid 5041 is too large or too small, it means that the external wire is too thick or too thin. By twisting the wiring bolt 4 to adjust the rotation in the threaded hole, the spacing between the multiple upper wiring grids 502 and the multiple lower wiring grids 5041 is adjusted until the multiple lower wiring grids 5041 tend to be parallel to the multiple upper wiring grids 502. The driving shaft 803 is twisted with a tool to drive the driving gear 805 to rotate. The driving gear 805 drives the two driven gears 802 at the same time through the tooth surface belt 804. The driven gear 802 drives the threaded rod 801 to rotate in the threaded tube. The threaded tube drives the track seat 7052 to slide on the slide rail 7051. Since the height of the slide rod 7053 on the track seat 7052 remains unchanged, during the process in which the track seat 7052 drives the slide rod 7053 to slide in the track groove 7055 on the side support plate 7054, the two booster plates 7021 approach each other, and the first rubber film 701 and the second rubber film 704 are deformed and wrapped around the external wire under the action of pressure. Since the two booster plates 7021 are filled with nano sand 706 between the first rubber film 701 and the second rubber film 704, the nano sand 706 has a certain fluidity. Under the action of the pressure of the booster plate 7021, the nano sand 706 squeezes the first rubber film 701 and the second rubber film 704 and tightly wraps around the external wire. As the two booster plates 7021 approach each other, the pressure on both sides of the protective box 602 corresponding to the booster plates 7021 moving away from each other decreases. Under the action of the low pressure, the ball valve 6063 moves in the direction away from the bucket-shaped cover 6062, and the ball valve 6063 pushes the movable shaft 6064 to slide in the mesh panel 6066, and squeezes the support spring 6065 to cause it to undergo elastic deformation. The air in the wiring slot 2 is sucked into the protective box 602 through the suction pipe 6061. When the two booster plates 7021 stop moving, the support spring 6065 starts to perform elastic reset movement, and the support spring 6065 pushes the ball valve 6063 to rush into the bucket-shaped cover 6062.

[0028] The above are only preferred specific implementation modes of the present invention, but 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 solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A relay contact protection structure, comprising a relay body (1), wherein a wiring slot (2) is reserved on the relay body (1), a disassembly slot (3) is provided on the relay body (1) corresponding to the wiring slot (2), and a wiring bolt (4) is rotatably connected in the disassembly slot (3), characterized in that: A wiring assembly (5) is embedded in the wiring slot (2), and a plurality of upper wiring grids (502) of the wiring assembly (5) are combined with a plurality of inclined lower wiring grids (5041) to form an arc extinguishing grid; A first protective component (6) is connected to the corresponding wiring slot (2) on the relay body (1), and after the external wire passes through the first wiring hole (603) and the second wiring hole (605) of the first protective component (6) in sequence and is connected to the wiring slot (2), the protective box (602) of the first protective component (6) forms a space of its own, the first protective component (6) houses the second protective component (7), and the two booster plates (7021) of the second protective component (7) are close to each other to support the external wire and to suck air in the wiring slot (2).

2. A relay contact protection structure according to claim 1, characterized in that: The wiring assembly (5) comprises an upper wiring head (501) embedded in the upper inner part of the wiring slot (2), a threaded hole being formed on the upper wiring head (501), the wiring bolt (4) being threadedly connected in the threaded hole, a plurality of upper wiring grids (502) being connected to the bottom of the upper wiring connector, the plurality of upper wiring grids (502) being arranged outwardly inclined, a lower wiring head (503) being connected to the inner bottom of the wiring slot (2), and a plurality of lower wiring members (504) being connected to the lower wiring head (503).

3. A relay contact protection structure according to claim 2, characterized in that: The lower connecting member (504) comprises two transfer side plates (5043) connected to the lower connecting head (503); the two transfer side plates (5043) are rotatably connected to a same transfer shaft (5042); the lower connecting grid plate (5041) is sleeved on the transfer shaft (5042); two transfer springs (5044) are sleeved on the transfer shaft (5042); the transfer shaft (5042) is elastically transferred to the two transfer side plates (5043) respectively via the two transfer springs (5044).

4. A relay contact protection structure according to claim 1, characterized in that: The first protective assembly (6) comprises a protective box (602) connected to the relay body (1) by bolts, a sealing gasket (601) is connected between the protective box (602) and the relay body (1), the first wiring hole (603) is corresponding to the wiring groove (2) and is opened on the side end surface of the protective box (602), a protective plate (604) is installed in the port of the protective box (602), and the second wiring hole (605) is corresponding to the first wiring hole (603) and is opened on the protective plate (604).

5. A relay contact protection structure according to claim 4, characterized in that: A one-way shutoff component (606) is clamped at the corner of the side end surface of the protective plate (604). The one-way shutoff component (606) comprises a suction pipe (6061) clamped at the corner of the side end surface of the protective plate (604). A bucket-shaped cover (6062) is sleeved in the port of the suction pipe (6061). A ball valve (6063) is sleeved in the bucket-shaped cover (6062). A movable shaft (6064) is connected to the side end surface of the ball valve (6063). A mesh panel (6066) is sleeved at the other end of the movable shaft (6064). The mesh panel (6066) is sleeved in the suction pipe (6061). A support spring (6065) is sleeved on the movable shaft (6064). The ball valve (6063) is elastically supported and connected to the mesh panel (6066) via the support spring (6065).

6. A relay contact protection structure according to claim 1, characterized in that: The second protection component (7) comprises a first rubber membrane (701) and a second rubber membrane (704) which are sealed and connected to the protection box (602); the first rubber membrane (701) and the second rubber membrane (704) are respectively located on the upper and lower sides of the first wiring hole (603); the first booster (702) and the second booster (703) are sleeved in the protection box (602) and are located on both sides of the first rubber membrane (701) and the second rubber membrane (704); the first booster (702) and the second booster (703) are The first booster (702) comprises a booster plate (7021) sleeved in the protective box (602), nano sand (706) is filled between the booster plate (7021) and the first rubber membrane (701), a surface of the booster plate (7021) facing away from the first rubber membrane (701) is connected to a plurality of telescopic rods (7022), the other ends of the plurality of telescopic rods (7022) are sleeved with telescopic sleeves (7023), and the other ends of the plurality of telescopic sleeves (7023) are connected to the inner bottom of the protective box (602).

7. A relay contact protection structure according to claim 6, characterized in that: The second protection component (7) further comprises two booster driving members (705) for driving the first booster member (702) and the second booster member (703) to move closer to each other, the booster driving member (705) comprising a slide rail (7051) connected to the inner bottom of the protection box (602), a track seat (7052) being slidably sleeved on the slide rail (7051), and a slide rod (7053) being connected to the track seat (7052); Both sides of the bottom of the boost plate (7021) are connected to side support plates (7054), and opposite surfaces of the two side support plates (7054) are provided with track grooves (7055), and both ends of the sliding rod (7053) are respectively slidably connected to the two track grooves (7055).

8. A relay contact protection structure according to claim 1, characterized in that: The side end surface of the protection box (602) is provided with a driving groove (9) corresponding to the two boost driving members (705), and the driving groove (9) is equipped with a driving assembly (8) for providing power to the two boost driving members (705), and the driving assembly (8) comprises a threaded rod (801) rotatably connected to the inner side end surface of the driving groove (9), and a threaded cylinder is threadedly connected to the threaded rod (801), and the threaded cylinder is connected to the slide rail (7051) seat, and driven gears (802) are sleeved in the corresponding driving grooves (9) on the two screw rods, and a driving shaft (803) is rotatably connected to the two driven gears (802) in the driving groove (9), and a driving gear (805) is sleeved on the driving shaft (803), and a toothed belt (804) is transmission-connected between the driving gear (805) and the two driven gears (802), and a sealing cover (806) is sealingly connected to the side end surface of the driving groove (9).

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