A safety shield for a mistake-proof electrical connection coupling system

Abstract

The application discloses a mistake-proof electric connection coupling system safety shielding protection device and relates to the technical device field of mistake-proof wire connection joints. The mistake-proof electric connection coupling system safety shielding protection device comprises a first connector and a second connector which are connected, and further comprises: a magnetic ring one which is sleeved on a sleeve member of the first connector; and a magnetic ring two which is sleeved on a plug of the second connector, wherein the magnetic ring one and the magnetic ring two repel each other when having the same polarity and attract each other when having different polarities to realize first-level anti-misplug verification. The application utilizes the same-pole repulsion characteristic of the magnetic ring one and the magnetic ring two to quickly screen polarity matching before the first connector and the second connector are contacted, so that the risk of misplug is avoided. A second-level error prevention mechanism triggers a tactile alarm when a threaded sleeve is screwed by mechanical matching of an error prevention groove and an error prevention block and resistance feedback of a spring two, fills nitrogen to build a safety shielding protection barrier during installation, and makes an annular prompt lamp light up through displacement of a guide rod, so that real-time visualization of completed connection is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of error-proof wire connection joints, in particular to a safety shielding protection device for an error-proof electrical connection coupling system. BACKGROUND

[0002] In the power transmission and distribution system, especially in the field of state grid equipment, the misplug of the connector may cause device short circuit, phase sequence disorder, overload or signal interference, etc.

[0003] The single mechanical error-proof structure in the prior art usually adopts asymmetric plug shape or guide key groove design, but is prone to structural wear after long-term plugging, resulting in rising error-proof failure rate; or adopts visual marking assistance, such as color coding and text identification, but when the color coding and text identification are worn or dirty and cannot be distinguished, it will also cause misplug.

[0004] Therefore, a safety shielding protection device for an error-proof electrical connection coupling system is proposed. SUMMARY

[0005] The technical problem to be solved by the application is to overcome the deficiencies of the prior art and provide a safety shielding protection device for an error-proof electrical connection coupling system that can overcome the above problems or at least partially solve the above problems.

[0006] To solve the above technical problems, the basic idea of the technical solution is: a safety shielding protection device for an error-proof electrical connection coupling system, comprising a first connector and a second connector connected together, further comprising: a magnetic ring one sleeved on a sleeve piece of the first connector; a magnetic ring two sleeved on a plug of the second connector, the magnetic ring one and the magnetic ring two repel each other and attract each other of different polarities to achieve first-level misplug prevention verification; a threaded sleeve for locking the second connector on the first connector; and a second-level misplug prevention mechanism located on the first connector and the second connector respectively for second-level misplug prevention verification when the plug is inserted into the sleeve piece.

[0007] Preferably, the sleeve piece is connected with a spring one, one end of the spring one is fixedly connected with a mounting ring one, the magnetic ring one is fixedly connected to the mounting ring one, the sleeve piece is symmetrically provided with a guide groove one, and the mounting ring one is slidingly connected in the guide groove one.

[0008] Preferably, a sliding ring is slidably connected on the plug of the second connector, a spring two is sleeved on the plug, one end of the spring two is fixedly connected with a mounting ring two, the other end of the spring two is fixedly connected with the sliding ring, the magnetic ring two is fixedly connected on the mounting ring two, symmetrical guide grooves two are formed on the plug, the sliding ring slides in the guide grooves two, the threaded sleeve is located between the sliding ring and the wide-diameter block two, clamping pieces are symmetrically arranged on the inner diameter of the mounting ring two, and the clamping pieces are attached to the outer periphery of the plug.

[0009] Preferably, mounting grooves are symmetrically formed on the sleeve piece, and elastic pieces are mounted in the mounting grooves, the elastic pieces are respectively connected with arc-shaped blocks and mounting blocks near the front end of the sleeve piece, and the arc-shaped blocks are located on the inner diameter of the sleeve piece.

[0010] Preferably, the second anti-insertion error mechanism comprises an anti-error groove formed on the mounting block and a slot formed on the mounting ring two, the slot corresponds to the mounting block, and an anti-error block is arranged on the slot.

[0011] Further, the wide-diameter block one is fixedly connected with a fixing ring, a guide rod is slidably connected on the fixing ring, a guide sleeve is fixedly connected on the fixing ring, one end of the guide rod slides in the guide sleeve, a spring three is connected between the guide rod and the guide sleeve, a connecting pipe and an inflation pipe are respectively connected on the guide sleeve, the inflation pipe leads to the sleeve piece, and a perforation is formed on the guide rod.

[0012] Further, a hook is fixedly connected on the side of the mounting ring two away from the magnetic ring two, a clamping groove is formed on the mounting block, and the hook corresponds to the clamping groove.

[0013] Further, a protective sleeve one is fixedly connected between the mounting ring one and the wide-diameter block one, a cavity is formed between the protective sleeve one and the sleeve piece, and the inflation pipe leads to the cavity.

[0014] Further, a protective sleeve two is connected between the wide-diameter block two and the threaded sleeve.

[0015] Further, a ring-shaped prompt lamp is fixedly connected on the first connector, a contact two is fixedly connected on the end of the guide rod, and a contact one is arranged on the ring-shaped prompt lamp.

[0016] Compared with the prior art, the technical scheme has the following beneficial effects:

[0017] 1. The error-proof electrical connection coupling system safety shielding protection device, through the same-pole repulsion characteristics of magnetic ring one and magnetic ring two, can realize first-level error-proof verification before the first connector and the second connector are physically contacted, and if the polarity is not matched, the first connector and the second connector are automatically repelled to avoid the risk of misplug, this link solves the problems of the hysteresis of traditional connectors that need to be plugged in and then powered on for detection, the inability to identify caused by plug wear and tear, and the misplug caused by visual marker auxiliary wear and tear and dirt, and significantly improves the screening efficiency;

[0018] 2. The error-proof electrical connection coupling system safety shielding protection device, when the magnetic ring one and the magnetic ring two are adsorbed through the first-level error-proof verification, the plug is inserted into the sleeve, the elastic sheet and the arc block form preliminary clamping on the plug, and at the same time, the elastic sheet closes the installation groove, actively isolates external foreign matter and liquid, and forms a front safety barrier;

[0019] 3. The error-proof electrical connection coupling system safety shielding protection device, in the process of screwing the threaded sleeve, the matching of the error-proof groove and the error-proof block constitutes second-level error-proof verification, if the error-proof groove and the error-proof block are misaligned, the compression resistance of spring two increases sharply, the threaded sleeve cannot be completely screwed, forming a tactile feedback type alarm, and when the error-proof groove and the error-proof block are matched, the hook engages with the clamping groove, triggering the elastic sheet to be raised, providing conditions for the activation of the safety shielding protection system formed by subsequent nitrogen filling;

[0020] 4. The error-proof electrical connection coupling system safety shielding protection device, when the first-level and second-level error-proof verification is passed, the screwing of the threaded sleeve drives the guide rod to trigger the gas path connection, nitrogen is filled into the cavity through the inflation pipe, forming a positive pressure anti-infiltration shielding barrier to prevent external liquid from invading, and at the same time, when the second-level error-proof verification is passed, the opening of the installation groove enables nitrogen to enter the sleeve, and the conductive needle and the jack are protected against oxidation;

[0021] 5. The error-proof electrical connection coupling system safety shielding protection device, through the displacement of the guide rod triggering the annular prompt light to light up, forming a visual completion signal, so that the operator can instantly perceive the connection state when using;

[0022] In summary, the magnetic pole verification utilizes the same-pole repulsion characteristics of magnetic ring one and magnetic ring two to quickly screen the polarity matching before the first connector and the second connector are contacted, avoiding the risk of misplug; the second-level error-proof mechanism triggers the tactile alarm when the threaded sleeve is screwed through the mechanical matching of the error-proof groove and the error-proof block and the resistance feedback of spring two, and builds a safety shielding protection barrier by filling nitrogen during installation, and makes the annular prompt light light up through the displacement of the guide rod, realizing real-time visualization of the completion of the connection;

[0023] Each link forms a progressive technical closed loop: the prequel verification provides necessary conditions for subsequent operation, the post-protective reverse enhancement device enhances the reliability, and finally realizes the effect of preventing misplug.

[0024] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] In the drawings:

[0026] Figure 1 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0027] Figure 2 A structural schematic view of a first connector and a second connector of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0028] Figure 3 A structural schematic view of a threaded sleeve of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0029] Figure 4 A structural schematic view of a protection sleeve one and a protection sleeve two of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0030] Figure 5 A structural schematic view of a slip ring of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0031] Figure 6 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure. Figure 5 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0032] Figure 7 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure. Figure 5 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0033] Figure 8 A structural schematic view of a magnetic ring two of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0034] Figure 9 A structural schematic view of a clamping piece of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0035] Figure 10 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure. Figure 9 A structural schematic view of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0036] Figure 11 A structural schematic view of a mounting block, a mistake-proof groove and a spring one of a safety shielding protection device of a mistake-proof electrical connection coupling system according to the present application is shown in the figure.

[0037] Figure 12 Structure diagram of the arc-shaped block and guide groove one of the error-proof electrical connection coupling system safety shielding protection device;

[0038] Figure 13 Diagram of the error-proof groove and error-proof block in alignment;

[0039] Figure 14 Diagram of the error-proof groove and error-proof block not in alignment.

[0040] In the figure: 1, first connector; 11, wide diameter block one; 111, external thread; 112, fixing ring; 12, sleeve piece; 121, guide groove one; 122, spring one; 1221, mounting ring one; 1222, magnetic ring one; 123, conductive needle; 124, mounting groove; 125, elastic sheet; 1251, arc-shaped block; 1252, mounting block; 1253, error-proof groove; 1254, clamping groove; 13, protective sleeve one; 131, cavity; 2, second connector; 21, wide diameter block two; 22, plug; 220, plug hole; 221, slip ring; 222, guide groove two; 223, spring two; 224, mounting ring two; 2241, hook; 225, magnetic ring two; 226, clamping sheet; 227, protective sleeve two; 228, slotted groove; 229, error-proof block; 23, threaded sleeve; 3, guide rod; 31, guide sleeve; 32, spring three; 33, through hole; 34, connecting pipe; 35, inflation pipe; 4, annular prompt light; 41, contact one; 42, contact two. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to explain the present application but not to limit the scope of the present application.

[0042] The technical solutions provided by the embodiments of the present application will be described below in detail with reference to the drawings. Figure 1 - the drawings Figure 14 The technical solutions provided by the embodiments of the present application will be described below in detail with reference to the drawings.

[0043] Embodiment 1: with reference to Figures 1-14 An error-proof electrical connection coupling system safety shielding protection device, comprising a first connector 1 and a second connector 2 connected to each other, further comprising: a magnetic ring one 1222 sleeved on a sleeve piece 12 of the first connector 1; a magnetic ring two 225 sleeved on a plug 22 of the second connector 2, the magnetic ring one 1222 and the magnetic ring two 225 repel each other and attract each other of different polarities to achieve first-level error-proof verification; a threaded sleeve 23 for locking the second connector 2 on the first connector 1; and a second-level error-proof mechanism respectively located on the first connector 1 and the second connector 2 for second-level error-proof verification when the plug 22 is inserted into the sleeve piece 12.

[0044] The sleeve piece 12 is connected with a spring 122, one end of the spring 122 is fixedly connected with a mounting ring 1221, a magnetic ring 1222 is fixedly connected on the mounting ring 1221, the sleeve piece 12 is symmetrically provided with a guide groove 121, the mounting ring 1221 is slidingly connected in the guide groove 121;

[0045] The plug 22 of the second connector 2 is slidingly connected with a sliding ring 221, the plug 22 is sleeved with a spring 223, one end of the spring 223 is fixedly connected with a mounting ring 224, the other end of the spring 223 is fixedly connected with the sliding ring 221, a magnetic ring 225 is fixedly connected on the mounting ring 224, the plug 22 is symmetrically provided with a guide groove 222, the sliding ring 221 slides on the guide groove 222, the threaded sleeve 23 is located between the sliding ring 221 and the wide diameter block 21, the mounting ring 224 is symmetrically provided with clamping pieces 226 on the inner diameter, the clamping pieces 226 are attached to the outer periphery of the plug 22, so as to prevent the mounting ring 224 from being suspended on the plug 22, and further avoid the mounting ring 224 from being dislocated and skewed when the magnetic ring 225 is attracted to the magnetic ring 1222, the clamping pieces 226 will be bent after being stressed;

[0046] When the device is used, the magnetic ring 225 on the second connector 2 is opposite to the magnetic ring 1222 on the first connector 1, if repulsion occurs, it means that the second connector 2 is not matched with the first connector 1, and the second connector 2 is replaced with another first connector 1.

[0047] It should be understood that in the embodiment, the magnetic ring 1222 and the magnetic ring 225 are used to verify the first level of anti-insertion error by the characteristics of repulsion between same poles and attraction between different poles, which is applicable to the case that there are two first connectors 1 and two second connectors 2.

[0048] When the magnetic ring 225 is attracted to the magnetic ring 1222, the plug 22 on the second connector 2 is inserted into the sleeve piece 12 of the first connector 1, so that the jack 220 on the plug 22 enters the conductive needle 123 in the sleeve piece 12, and during the insertion of the plug 22, the magnetic ring 1222 and the magnetic ring 225 are in contact, so that the spring 122 and the spring 223 are compressed.

[0049] Then the threaded sleeve 23 is screwed on the outer thread 111 of the wide diameter block 11, and during the screwing process, the threaded sleeve 23 gradually approaches the first connector 1, the threaded sleeve 23 pushes the sliding ring 221 to slide in the guide groove 222 and extrudes the spring 223, at this time, the spring 223 pushes the mounting ring 224, the magnetic ring 225 and the sleeve piece 12, and the second level of anti-insertion error verification is performed by the second level of anti-insertion error mechanism, to further verify whether the first connector 1 is matched with the second connector 2.

[0050] Therefore, the device can perform fast first-level anti-misplug verification through the magnetic ring one 1222 and the magnetic ring two 225. When the magnetic ring one 1222 and the magnetic ring two 225 repel each other when approaching, it means that the first connector 1 and the second connector 2 are not matched. When the magnetic ring one 1222 and the magnetic ring two 225 attract each other after approaching, the next step of inserting the plug 22 into the sleeve member 12 can be performed. Then, when the first connector 1 and the second connector 2 are tightened through the threaded sleeve 23, the second-level anti-misplug mechanism is used to perform anti-misplug verification again, thereby effectively preventing misplug.

[0051] Embodiment 2: Refer to Figure 6 , Figure 11 , Figure 12 A safety shielding protection device for an error-proof electrical connection coupling system, which is basically the same as that in Embodiment 1, and is further provided with: a mounting groove 124 symmetrically formed on the sleeve member 12, and a spring piece 125 mounted in the mounting groove 124. The spring piece 125 is connected with an arc-shaped block 1251 and a mounting block 1252 respectively near the front end of the sleeve member 12. The arc-shaped block 1251 is located in the inner diameter of the sleeve member 12.

[0052] One end of the spring piece 125 is fixedly connected to the inner wall of the mounting groove 124 away from the opening end of the sleeve member 12. The spring piece 125 and the arc-shaped block 1251 and the mounting block 1252 block the mounting groove 124 in the initial state. When the plug 22 is inserted into the sleeve member 12, the arc-shaped block 1251 extends into the sleeve member 12, so that the arc-shaped block 1251 and the spring piece 125 can preliminarily clamp the plug 22, thereby avoiding the shaking of the plug 22 in the sleeve member 12.

[0053] In addition, the spring piece 125 and the arc-shaped block 1251 and the mounting block 1252 block the mounting groove 124 in the initial state, thereby avoiding the entry of external foreign matters, dust and liquid into the sleeve member 12 from the mounting groove 124 when the first connector 1 and the second connector 2 are separated, and further achieving the effect of safety shielding protection for the first connector 1.

[0054] Embodiment 3: Refer to Figure 6 , Figure 11 , Figure 13 , Figure 14 A safety shielding protection device for an error-proof electrical connection coupling system, which is basically the same as that in Embodiment 2, and is further provided with: a second-level anti-misplug mechanism including an anti-misplug groove 1253 formed on the mounting block 1252 and a slot 228 formed on the mounting ring two 224. The slot 228 corresponds to the mounting block 1252, and the slot 228 is provided with an anti-misplug block 229.

[0055] When the error prevention block 229 is located in alignment with the error prevention groove 1253, then the installation ring two 224 can be smoothly set on the sleeve member 12, when the error prevention block 229 is misaligned with the error prevention groove 1253, then in the process of rotating the threaded sleeve 23, causing the threaded sleeve 23 to continuously press the spring two 223, so that the rotation damping of the threaded sleeve 23 increases, when the spring two 223 is compressed to the limit, the threaded sleeve 23 can no longer continue to rotate the threads on the wide diameter block one 11, and the open end of the threaded sleeve 23 cannot approach the fixed ring 112 located on the wide diameter block one 11, then this represents that there is a problem with the matching of the first connector 1 and the second connector 2, which needs to be checked and verified.

[0056] Embodiment 4: refer to Figure 4 、 Figure 5 、 Figure 7 、 Figure 11 、 Figure 12 A safety shielding protection device for an error prevention electrical connection coupling system, which is basically the same as Embodiment 3, and further has: the wide diameter block one 11 is fixedly connected with a fixed ring 112, the fixed ring 112 is slidably connected with a guide rod 3, the fixed ring 112 is fixedly connected with a guide sleeve 31, one end of the guide rod 3 slides in the guide sleeve 31, the guide rod 3 and the guide sleeve 31 are connected with a spring three 32, the guide sleeve 31 is respectively connected with a connecting pipe 34 and an inflation pipe 35, the inflation pipe 35 leads to the sleeve member 12, and the guide rod 3 is provided with a perforation 33;

[0057] When the first-level and second-level error insertion prevention verification passes, the threaded sleeve 23 can be smoothly and easily tightened on the first connector 1, and the open end of the threaded sleeve 23 abuts against the guide rod 3, so that the guide rod 3 slides in the guide sleeve 31 on the fixed ring 112, and the perforation 33 coincides with the connecting pipe 34 and the inflation pipe 35, the connecting pipe 34 connected with the external gas cylinder passes through the perforation 33 to inflate the inflation pipe 35, and is discharged into the first connector 1 and the second connector 2, that is, into the cavity 131;

[0058] The gas is preferably nitrogen, and the nitrogen is filled between the first connector 1 and the second connector 2, which can improve the safety shielding protection effect and increase the internal pressure to avoid external liquid from entering.

[0059] It should be noted that the inflation pipe 35 is provided with a one-way valve, and when the gas cylinder connected with the connecting pipe 34 is removed, the nitrogen filled between the first connector 1 and the second connector 2 will not leak out through the inflation pipe 35;

[0060] In an embodiment, the gas cylinder can also not be removed, and thus when the gas pressure in the cavity 131 decreases, it can be automatically supplemented.

[0061] The mounting ring two 224 is fixedly connected with a hook 2241 on the side away from the magnetic ring two 225, and the mounting block 1252 is provided with a clamping groove 1254, and the hook 2241 corresponds to the clamping groove 1254;

[0062] When the secondary anti-misplug mechanism is verified, the mounting ring two 224 will pass over the mounting block 1252, and then the hook 2241 is inserted into the clamping groove 1254, and as the threaded sleeve 23 is screwed on the wide-diameter block one 11, the threaded sleeve 23 continuously extrudes the spring two 223, the mounting ring two 224 and the magnetic ring two 225 continuously move towards the sleeve piece 12, and then the hook 2241 pulls the spring piece 125, so that the spring piece 125 at one end of the mounting block 1252 is buckled to the outer circumferential direction of the sleeve piece 12, and then the arc-shaped block 1251 does not block the mounting groove 124, at this time, the inside of the sleeve piece 12 is in communication with the cavity 131, and the nitrogen is filled into the sleeve piece 12, avoiding the oxidation problem of the conductive needle 123 and the jack 220.

[0063] The wide-diameter block two 21 and the threaded sleeve 23 are connected with the protective sleeve two 227, which further seals the first connector 1 and the second connector 2 after being connected, avoiding the leakage of the filled nitrogen.

[0064] Embodiment 5: refer to Figure 7 、 Figure 12 A mistake-proof electrical connection coupling system safety shielding protection device, which is basically the same as embodiment 4, and further has: the first connector 1 is fixedly connected with an annular prompt lamp 4, the guide rod 3 is fixedly connected with a contact two 42 at the end, and the annular prompt lamp 4 is provided with a contact one 41;

[0065] When the guide rod 3 slides in the guide sleeve 31, the perforation 33 is opposite to the connecting pipe 34 and the inflation pipe 35, the contact two 42 on the guide rod 3 contacts the contact one 41, and the annular prompt lamp 4 emits light to prompt that the first connector 1 and the second connector 2 are completely connected;

[0066] The annular prompt lamp 4 is provided with a button cell or a rechargeable lithium battery on the lamp holder, and the annular prompt lamp 4 adopts an LED lamp bead, which is more power-saving;

[0067] Further, the annular prompt lamp 4 can be set to turn off after a certain setting time after emitting light.

[0068] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the prompt as equivalent embodiments of equivalent changes without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application without departing from the technical solution of the present application shall still fall within the scope of the present application.

Claims

1. A safety shield for a mistake-proof electrical connection coupling system comprising a first connector, a second connector connected thereto, characterized in that, Also include: The sleeve of the first connector on the sleeve piece magnetic ring one; Magnetic ring two, the magnetic ring one, magnetic ring two same pole repulsion, opposite sex attracted to achieve a level of anti-misplug verification; Threaded sleeve, the second connector is locked on the first connector; Two anti-misplug mechanism, respectively, in the first connector, second connector, to the plug inserted into the sleeve piece to carry out two anti-misplug verification; The sleeve piece is connected with spring one, one end of the spring one is fixedly connected with the mounting ring one, the magnetic ring one is fixedly connected on the mounting ring one, the sleeve piece is symmetrically provided with guide groove one, the mounting ring one is slidingly connected in the guide groove one; The plug of the second connector is slidingly connected with a sliding ring, the plug is sleeved with a spring two, one end of the spring two is fixedly connected with a mounting ring two, the other end of the spring two is fixedly connected with the sliding ring, the magnetic ring two is fixedly connected on the mounting ring two, the plug is symmetrically provided with guide groove two, the sliding ring is slidingly connected on the guide groove two, the threaded sleeve is located between the sliding ring and the wide diameter block two, the mounting ring two is symmetrically provided with clamping pieces on the inner diameter, the clamping pieces are attached to the outer periphery of the plug; The sleeve piece is symmetrically provided with a mounting groove, the mounting groove is mounted with a spring piece, the spring piece is connected with an arc block and a mounting block near the front end of the sleeve piece, the arc block is located in the inner diameter of the sleeve piece; The second anti-misplug mechanism comprises an anti-misplug groove provided on the mounting block and a slot provided on the mounting ring two, the slot corresponds to the mounting block, and the slot is provided with an anti-misplug block; The first connector is fixedly connected with a wide diameter block one, the wide diameter block one is fixedly connected with a fixed ring, the fixed ring is slidingly connected with a guide rod, the fixed ring is fixedly connected with a guide sleeve, one end of the guide rod is slidingly connected in the guide sleeve, the guide rod and the guide sleeve are connected with a spring three, the guide sleeve is connected with a connecting pipe and an inflation pipe, the inflation pipe leads to the sleeve piece, and the guide rod is provided with a through hole; When the threaded sleeve is smoothly and smoothly screwed on the first connector, the opening end face of the threaded sleeve abuts against the guide rod, so that the guide rod slides in the guide sleeve on the fixed ring, the through hole coincides with the connecting pipe and the inflation pipe, the connecting pipe connected with the external gas cylinder passes through the through hole to the inflation pipe, and the gas is introduced into the first connector and the second connector; the gas is nitrogen.

2. A safety shield for a mistake-proof electrical connection coupling system according to claim 1, wherein The mounting ring two is fixedly connected with a hook on the side away from the magnetic ring two, the mounting block is provided with a clamping groove, and the hook corresponds to the clamping groove.

3. A safety shield for a mistake-proof electrical connection coupling system according to claim 1, wherein The mounting ring one and the wide diameter block one are fixedly connected with a protective sleeve one, and the protective sleeve one and the sleeve piece form a cavity.

4. A safety shield for a mistake-proof electrical connection coupling system according to claim 1, wherein The wide diameter block two and the threaded sleeve are connected with a protective sleeve two.

5. A safety shield for a mistake-proof electrical connection coupling system according to claim 1, wherein The first connector is fixedly connected with a ring-shaped prompt lamp, the guide rod is fixedly connected with a contact two at the end, and the ring-shaped prompt lamp is provided with a contact one.

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