A connection guard

Abstract

The application discloses a connecting protection device, which comprises a split protection piece and a holding piece arranged in the split protection piece, and a connecting piece arranged on the holding piece. The connecting protection device is designed by combining the split protection piece, the holding piece and the connecting piece, can realize stable connection of a cable conductor, has high protection level and sealing performance, is simple to install and maintain, and is suitable for multi-core cable connection. The connecting protection device is simple in operation method, convenient to use and does not need much effort.

Description

Technical Field

[0001] This invention belongs to the field of electrical connection technology, and specifically relates to a connection protection device. Background Technology

[0002] In the fields of power systems and electrical engineering, the safety and reliability of cable connections are core elements for ensuring the stable operation of equipment. Traditional cable connection methods mostly employ welding, crimping, or ordinary bolt fastening structures. These methods have gradually revealed the following technical defects over long-term use:

[0003] 1. Insufficient connection stability: Conventional connection structures are susceptible to mechanical vibration, temperature changes and other factors, which can lead to increased contact resistance, loose connection points, and even local overheating or arcing failures.

[0004] 2. Limitations in protection performance: Existing connection devices mostly rely on a single seal or a simple housing design, which makes it difficult to meet the high-level protection requirements of IP65 and above under complex environments (such as humidity, dust, and corrosive gases), and there are hidden dangers such as insulation aging, water leakage and short circuit.

[0005] 3. Poor compatibility and scalability: Most connectors are designed for a single material (such as pure copper or pure aluminum cables). When dissimilar metals such as copper and aluminum come into direct contact, electrochemical corrosion is likely to occur. Furthermore, the fixed structure makes it difficult to adapt to the flexible installation requirements of cables with different core counts (such as 3-5 cores).

[0006] 4. Complex installation and maintenance: Traditional split sleeves and connecting pipes lack integrated fixing design. During assembly, special tools are required for multiple adjustments, resulting in low operation efficiency and easy problems such as poor sealing or uneven tightening.

[0007] In recent years, although improved connection devices have proposed split-type bushings or modular designs, problems such as redundant sealing structures and chaotic multi-core cable arrangement still exist. Therefore, there is an urgent need for a cable connection technology solution that combines high protection, multi-material compatibility, ease of operation, and long-term stability to meet the stringent requirements under complex working conditions. Summary of the Invention

[0008] The purpose of this invention is to provide a connection protection device to solve the problems of insufficient connection stability, low protection level, poor compatibility and complicated installation and maintenance of existing products. Through the structural combination design of split protective components, retaining components and connecting components, it can achieve rapid assembly, high reliability sealing and adaptability to multi-core cables.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a connection protection device, comprising a split-type protective component and a retaining component disposed within the split-type protective component, wherein a connecting component is disposed on the retaining component. The split-type protective component is used to mount the retaining component with the connecting component, thereby compactly fixing multiple connecting components onto the retaining frame through the retaining component, achieving a tight connection of multiple connecting components.

[0010] The aforementioned connection protection device includes a retainer comprising a retainer body, a plurality of limiting openings in a ring array, a plurality of limiting recesses in a ring array, isolation protrusions at both ends of the retainer body, and / or weight-reducing through holes. The retainer is used to achieve phase-to-phase isolation in multi-phase cable systems, ensuring the electrical safety of the cable during energized operation and preventing breakdown faults. This retainer employs an optimized structural design, achieving a compact layout while ensuring reliable insulation performance, effectively improving space utilization.

[0011] In the aforementioned connection protection device, the multiple limiting openings and multiple limiting recesses of the annular array are all through-type structures. The limiting openings and limiting recesses are both disposed on the cage body, and the limiting openings are located between two adjacent limiting recesses.

[0012] The aforementioned connection protection device includes an opening on the wall of the retainer body and a C-shaped recess that is connected to the opening and recessed into the retainer body, with a connector disposed on the C-shaped recess.

[0013] The aforementioned connection protection device, wherein the split protective component includes a first protective sleeve and a second protective sleeve bolted to the first protective sleeve, both the first and second protective sleeves include a first cross-section pipe segment and a second cross-section pipe segment integrally connected or threadedly connected to the first cross-section pipe segment, wherein the cross-sectional area of ​​the first cross-section pipe segment is larger than the cross-sectional area of ​​the second cross-section pipe segment.

[0014] The aforementioned connection protection device, wherein the split protective component includes a third protective sleeve and a fourth protective sleeve threadedly connected to the third protective sleeve, the third protective sleeve including a third cross-section pipe segment and a fourth cross-section pipe segment integrally connected or threadedly connected to the third cross-section pipe segment, the cross-sectional area of ​​the third cross-section pipe segment being larger than the cross-sectional area of ​​the fourth cross-section pipe segment; the third cross-section pipe segment is provided with an internal thread, the fourth protective sleeve including a fifth cross-section pipe segment and a sixth cross-section pipe segment integrally connected or threadedly connected to the fifth cross-section pipe segment, the cross-sectional area of ​​the fifth cross-section pipe segment being larger than the cross-sectional area of ​​the sixth cross-section pipe segment; the fifth cross-section pipe segment is provided with an external thread matching the internal thread.

[0015] The aforementioned connection protection device further includes a sealing ring sleeved on the retaining member, wherein the sealing ring is disposed between the first protective sleeve and the second protective sleeve. The sealing ring enhances the sealing effect of the connection protection device of the present invention, thereby improving the protection level.

[0016] When the first protective sleeve and the second protective sleeve are threaded together, an inner recess with a depth of d / 2 can be provided on the first and second protective sleeves, where d is the thickness of the sealing ring. Placing the sealing ring in the inner recess can achieve a sealing effect.

[0017] In the aforementioned connection protection device, the sealing ring includes a protrusion corresponding to the plurality of limiting openings, and the protrusion is provided with a round hole for bolt connection.

[0018] The aforementioned connection protection device includes a connection body, a through structure disposed on the connection body, and holes A and B disposed on the planar portion of the connection body.

[0019] In the aforementioned connection protection device, the connector is provided with an observation hole, which is located on the connection body and communicates with the through structure.

[0020] The aforementioned connection protection device has two limiting protrusions symmetrically arranged along the centerline inside the connector.

[0021] The aforementioned connection protection device has a positioning layer located within the through structure in the connector, and a first wire hole is formed on one side of the positioning layer, and a second wire hole is formed on the other side of the positioning layer. The positioning layer is located between the A hole and the B hole.

[0022] The aforementioned connection protection device further includes an A locking bolt threaded to hole A and a B locking bolt threaded to hole B.

[0023] The aforementioned connection protection device also includes sealing kits and locking components disposed at both ends of the split protective component, wherein the locking component and the protective kit are connected by threads, snap-fit, or crimp.

[0024] In the aforementioned connection protection device, the thickness D1 between the planar portion of the through-hole structure and the connecting body is greater than the thickness D2 between the arc-shaped portion of the through-hole structure and the connecting body.

[0025] In the aforementioned technical solution, the split-type protective component is used to house the retainer with connectors. The retainer tightly fixes multiple connectors to itself, achieving a tight connection between them. Sealing rings and sealing kits enhance the sealing effect of the protective device, raising the protection level to IP65 or higher.

[0026] By using locking devices to securely connect the cable with its outer sheath to the split protective component, displacement of the cable segment inside the split protective component is effectively suppressed. This significantly improves the protective stability of the connection device under dynamic operating conditions, prevents displacement caused by cable movement, and ensures the stability of the cable connection.

[0027] The weight of the retaining component is reduced by using a weight-reducing through-hole, thereby reducing the overall weight of the connecting protective device.

[0028] The outer wall of the cage body is circumferentially machined with an array of limiting openings, whose radius of curvature precisely matches the protrusions of the sealing ring, achieving axial positioning through circumferential fitting. The limiting recesses employ a C-shaped recess structure to precisely constrain the assembly position of the connectors, fixing the C-shaped recess structure onto the cage. Simultaneously, the isolation protrusions spatially separate adjacent exposed wire cores through a physical barrier, forming a reliable wire core isolation zone. This effectively avoids the risk of short circuits between wire cores during installation and use, thereby improving protective performance.

[0029] The round hole is used for bolt connection, which connects the first protective sleeve, sealing ring and second protective sleeve with bolts, and then the first protective sleeve and the second protective sleeve are locked with nuts.

[0030] A certain thickness D2 is provided to ensure a certain engagement length between the A locking bolt and the first threaded hole and the B locking bolt and the second threaded hole, ensuring that the A locking bolt and the B locking bolt have sufficient strength to press the cable conductor through the channel. An opening is provided to facilitate tightening the A locking bolt and the B locking bolt on the connector.

[0031] In this example, the split-type sleeve structure composed of the first and second protective sleeves, assembled using bolt connections, enables rapid assembly and disassembly of the connecting protective device, facilitating installation and maintenance. This split design not only facilitates disassembly and maintenance in confined spaces but also significantly improves maintenance economy by allowing for partial replacement of damaged sleeve components, while maintaining the integrity of the main structure.

[0032] In this example, the first and second protective kits employ a stepped limiting structure design, with a significant diameter transition formed by large-diameter and small-diameter cross-section pipe sections. This variable-diameter pipe section creates a mechanical interference limiting mechanism in the axial direction, effectively suppressing cable movement under dynamic load conditions. Simultaneously, the arc-shaped transition structure at the junction of the first and second cross-section pipe sections allows for the gradual release of cable bending stress, significantly reducing the risk of fretting wear and stress concentration.

[0033] The positioning layer is used to form the first wire hole and the second wire hole, and to position the length of the inserted cable. When the stripped cable conductor is placed into the first wire hole and the second wire hole and touches the positioning layer, it indicates that the cable conductor has been placed in place.

[0034] The method of using a connection protection device as described above includes the following steps:

[0035] Step S01: On one cable to be connected after its outer sheath has been stripped, the locking element, the sealing kit, and the first protective sleeve are sequentially fitted onto it; on another cable to be connected after its outer sheath has been stripped, the locking element, the sealing kit, and the second protective sleeve are sequentially fitted onto it.

[0036] Step S02: Insert n connectors into the n limiting recesses of the retainer;

[0037] Step S02: Insert the n wires of the cable to be connected, which are fitted with the first protective sleeve, into the through-structure of the n connectors; insert the m wires of the cable to be connected, which are fitted with the second protective sleeve, into the through-structure of the m connectors, where m = n ≥ 2.

[0038] Or step S03: Insert the n wires of the cable to be connected, which are fitted with the first protective sleeve, into the first wire holes of the n connectors. Each wire is inserted into the first wire hole of a connector. Tighten the A locking bolt screwed into the first wire hole until the A locking bolt is broken off outside the connector.

[0039] Insert the m wires of the cable to be connected, which are fitted into the second protective sleeve, into the second wire holes of the m connectors, with each wire corresponding to one second wire hole of the connector. Tighten the B locking bolt screwed into the second wire hole until the B locking bolt is broken off outside the connector, where m=n≥2;

[0040] Step S04: Move the first protective sleeve and the second protective sleeve, and connect the first protective sleeve and the second protective sleeve together by bolt connection or threaded connection, and make the retainer located inside the protective sleeve;

[0041] Step S05: Tighten the locking parts at both ends of the split protective component to complete the sealing and fixing.

[0042] Compared with existing technologies, this invention, through its structural combination design of a split protective component, a retaining component, and a connecting component, achieves a stable connection of the cable conductor, while providing a high level of protection and sealing performance. It is simple to install and maintain, and suitable for multi-core cable connections. The split protective component, combined with a sealing kit and locking components, achieves a high level of protection of IP65 or higher, meeting the requirements of harsh environments such as humidity. The split protective component's structural design allows for disassembly and partial maintenance without requiring overall replacement, simplifying maintenance. The modular design of the connecting component better meets production needs, enabling standardized production and reducing production costs. The retaining component with its isolation protrusion effectively isolates the cable conductor.

[0043] The method of using this invention is simple, convenient and effortless. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0045] Figure 1 This is a schematic diagram of the structure of the protective device of the present invention;

[0046] Figure 2 This is an exploded view of the connection protection device of the present invention;

[0047] Figure 3 This is a schematic diagram of the retainer structure according to an embodiment of the present invention;

[0048] Figure 4 This is a schematic diagram of the retainer structure according to another embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of a connector structure according to an embodiment of the present invention;

[0050] Figure 6 This is a schematic diagram of the connector structure according to another embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the bolt-connected split protective component of the present invention;

[0052] Figure 8 This is a schematic diagram of the structure of the split protective component with threaded connection of the present invention;

[0053] Figure 9 This is a schematic diagram of the structure of the inner limiting protrusion of the connector of the present invention;

[0054] Figure 10 This is a schematic diagram of the connector of the present invention with built-in cable conductors of different specifications;

[0055] Figure 11 This is a flowchart of one embodiment of the present invention;

[0056] Figure 12 This is a flowchart of another embodiment of the present invention.

[0057] Figure label:

[0058] 1-Split-type protective component, 101-First protective sleeve, 102-Second protective sleeve, 1021-First cross-section pipe section, 1022-Second cross-section pipe section, 103-Third protective sleeve, 1031-Third cross-section pipe section, 1032-Fourth cross-section pipe section, 104-Fourth protective sleeve, 1041-Fifth cross-section pipe section, 1042-Sixth cross-section pipe section;

[0059] 2-Retaining component, 201-Retainer body, 202-Weight reduction through hole, 203-Limiting opening, 204-Isolation protrusion, 205-Limiting recess, 2051-Opening, 2052-C-shaped recess;

[0060] 3-Connector, 301-Connector body, 302-Through structure, 303-Limiting protrusion, 304-Observation hole, 305-A hole, 306-B hole, 307-Curved surface, 308-Flat surface, 309-Positioning layer, 3010-First line hole, 3011-Second line hole, 3012-A locking bolt, 3013-B locking bolt.

[0061] 4-Sealing ring, 401-Protrusion, 402-Round hole, 5-Locking part, 6-Sealing kit, 7-Center line.

[0062] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0063] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0064] Embodiment 1 of the present invention: Figure 1 As shown, a connection protection device includes a split-type protective member 1 for limiting and protecting a retaining member 1, and a retaining member 2 disposed within the split-type protective member 1 for placing a connecting member 3. The retaining member 2 is provided with a connecting member 3 for placing a single conductor of a cable. Multiple retaining members 2 can be compactly arranged and fixed together by means of the retaining member 2.

[0065] Furthermore, such as Figure 2 , Figure 3 , Figure 4 As shown, the retainer 2 includes a retainer body 201 manufactured using additive manufacturing or machining processes, a plurality of limiting openings 203 arranged in a ring array, and a plurality of limiting recesses 205 arranged in a ring array on the retainer body 201. Isolation protrusions 204 and / or weight-reducing through holes 202 are also provided at both ends of the retainer body 201. The isolation protrusions 204 prevent the cable conductor from contacting each other, thus positioning the cable conductor that passes through the structure. The design of the limiting openings 203 facilitates the tightening of locking bolts A 3012 and B 3013.

[0066] To accommodate the connector 3 and the sealing ring 4, the multiple limiting openings 203 and multiple limiting recesses 205 of the annular array are all through-type structures. Both the limiting openings 203 and the limiting recesses 205 are located on the retainer body 201. To ensure a compact structural design and accommodate the sealing ring 4, the limiting openings 203 are positioned between two adjacent limiting recesses 205. Multiple connectors 3, such as three or five, can be placed on the retainer 2, corresponding to cables with three or five core conductors. The connectors 3 are placed in the limiting recesses 205. The structural design of the limiting recesses 205 allows for direct insertion of the connectors 3, simplifying the operation.

[0067] Furthermore, the limiting recess 205 includes an opening 2051 provided on the wall of the retainer body 201, and a C-shaped recess 2052 connected to the opening 2051 and recessed into the retainer body 201, with the connector 3 disposed on the C-shaped recess 2052. The combined design of the opening 2051 and the C-shaped recess 2052 serves both to limit the connector 3 and to achieve weight reduction.

[0068] To accommodate the conductor connection of multi-core cables, multiple C-shaped recesses can be provided on the retainer 2, such as three or five C-shaped recesses, and correspondingly three or five openings 2051.

[0069] Embodiment 2 of the present invention: Based on Embodiment 1, further, as follows... Figure 7 As shown, the split-type protective component 1 includes a first protective sleeve 101 and a second protective sleeve 102 bolted to the first protective sleeve 101. Both the first and second protective sleeves 101 and 102 include a first cross-sectional pipe section 1021 and a second cross-sectional pipe section 1022 integrally connected to or threadedly connected to the first cross-sectional pipe section 1021. The cross-sectional area of ​​the first cross-sectional pipe section 1021 is larger than that of the second cross-sectional pipe section 1022. Both the first and second protective sleeves 101 and 102 are provided with bolt holes for bolt connection. The first and second protective sleeves 101 and 102 are joined together by bolt connection to confine the retainer 2, which contains the connector 3, within the split-type protective component 1.

[0070] Embodiment 3 of the present invention: Based on Embodiment 1, further, as follows... Figure 8As shown, in order to confine the retainer 2 equipped with the connector 3 within the split protective component 1, the split protective component 1 can also employ a threaded connection. Specifically, in this embodiment, the split protective component 1 includes a third protective sleeve 103 and a fourth protective sleeve 104 threadedly connected to the third protective sleeve 103. The third protective sleeve 103 includes a third cross-section pipe section 1031 and a fourth cross-section pipe section 1032 integrally connected or threadedly connected to the third cross-section pipe section 1031. The cross-sectional area of ​​the third cross-section pipe section 1031 is larger than the cross-sectional area of ​​the fourth cross-section pipe section 1032. The third cross-section pipe section 1031 is provided with an internal thread. The fourth protective sleeve 104 includes a fifth cross-section pipe section 1041 and a sixth cross-section pipe section 1042 integrally connected or threadedly connected to the fifth cross-section pipe section 1041. The cross-sectional area of ​​the fifth cross-section pipe section 1041 is larger than the cross-sectional area of ​​the sixth cross-section pipe section 1042. The fifth cross-section pipe section 1041 is provided with an external thread that matches the internal thread. When the first protective sleeve 101 and the second protective sleeve 102 are threaded together, the first protective sleeve 101 and the second protective sleeve 102 can be provided with an inner recess with a depth of d / 2 (not shown in the figure), where d is the thickness of the sealing ring 4. When the first protective sleeve 101 and the second protective sleeve 102 are combined, the sealing ring 4 is placed in the space formed by the two inner recesses. The dimensions of the first protective sleeve 101 and the second protective sleeve 102 are designed to meet the requirements of forming a space for placing the sealing ring 4. The sealing performance is improved by adding the sealing ring 4.

[0071] Embodiment 4 of the present invention: Based on Embodiment 2 or Embodiment 3, such as Figure 2 As shown, the aforementioned connection protection device further includes a sealing ring 4 sleeved on the retaining member 2, the sealing ring 4 being disposed between the first protective sleeve 101 and the second protective sleeve 102. The sealing ring 4 includes protrusions 401 corresponding to multiple limiting openings 203, and the protrusions 401 are provided with circular holes 402 for bolt connection. The sealing ring 4 may be a flat sealing gasket made of rubber.

[0072] like Figure 5 As shown, the connector 3 includes a connecting body 301, a through structure 302 disposed on the connecting body 301, and holes A 305 and B 306 disposed on the planar portion 308 of the connecting body 301. The cable conductor is placed in the through structure 302, and holes A 305 and B 306 are used to place bolts that clamp the cable conductor.

[0073] Specifically, the connector 3 is provided with an observation hole 304, which is located on the connector body 301 and communicates with the through structure 302. The observation hole 304 allows observation of whether the cable inside the through structure 302 is properly placed, and also serves to reduce weight.

[0074] Embodiment 5 of the present invention: Based on Embodiment 4, as follows Figure 5 and Figure 9 As shown, specifically, the connector 3 is provided with two limiting protrusions 303 symmetrically arranged along the center line 8. The limiting protrusions 303 restrict the two cable conductors inserted into the through structure 302 from both ends of the connector 3, thus serving a limiting function. Compared with embodiment 6, the connector 3 in this embodiment is easier to mass-produce by extrusion, resulting in lower manufacturing costs.

[0075] Connector 3 also includes an A locking bolt 3012 threadedly connected to hole A 305, and a B locking bolt 3013 threadedly connected to hole B 306. Locking bolts A 3012 and B 3013 are used to press the cable conductor into the through-structure 302, such as... Figure 10 The diagram shows a connector 3 penetrating the structure 302 and containing cable conductors of different specifications.

[0076] Furthermore, it also includes sealing kits 6 and locking components 5 disposed at both ends of the split protective component 1, wherein the locking component 5 is connected to the protective kit 1 by a threaded connection, a snap-fit ​​connection, or a press-fit.

[0077] The thickness D1 between the through-structure 302 and the planar portion 308 of the connecting body 301 is greater than the thickness D2 between the through-structure 302 and the arc-shaped portion 307 of the connecting body 301. A certain thickness D2 is set to ensure that there is a certain screw length between the A locking bolt 3012 and the A hole 305 and the B locking bolt 3013 and the B hole 306, ensuring that the A locking bolt 3012 and the B locking bolt have sufficient strength to press the cable conductor inside the through-structure 302.

[0078] Example 6, based on Example 4, such as Figure 6 As shown, specifically, the connector 3 has a positioning layer 309 located within the through structure 302, with a first wire hole 3010 formed on one side of the positioning layer 309 and a second wire hole 3011 formed on the other side. The positioning layer 309 is positioned between hole A 305 and hole B 306. The positioning layer 309 forms the first wire hole 3010 and the second wire hole 3011, separating the cable conductors placed in the first wire hole 3010 and the second wire hole 3011, thus separating the two cable conductors in the through structure 302.

[0079] Connector 3 also includes an A locking bolt 3012 threadedly connected to hole A 305, and a B locking bolt 3013 threadedly connected to hole B 306. Locking bolts A 3012 and B 3013 are used to press the cable conductor into the through-structure 302, such as... Figure 10 The diagram shows a connector 3 penetrating the structure 302 and containing cable conductors of different specifications.

[0080] Furthermore, it also includes sealing kits 6 and locking components 5 located at both ends of the split protective component 1. The locking components 5 are connected to the split protective component 1 by threads, snap-fit ​​connections, or crimping. If a snap-fit ​​connection is used, the two ends of the split protective component 1 and the locking components 5 are provided with mutually cooperating snap-fit ​​structures (not shown in the figure).

[0081] Furthermore, the thickness D1 between the through-structure 302 and the planar portion 308 of the connecting body 301 is greater than the thickness D2 between the through-structure 302 and the arc-shaped portion 307 of the connecting body 301. A certain thickness D2 is provided to ensure that there is a certain screw length between the A locking bolt 3012 and the A hole 305 and the B locking bolt 3013 and the B hole 306, ensuring that the A locking bolt 3012 and the B locking bolt 3013 have sufficient strength to press the cable conductor inside the through-structure 302.

[0082] Embodiment 7 of the present invention: A method for using a connection protection device, comprising the following steps:

[0083] Step S01: On one cable to be connected after its outer sheath has been stripped, the locking member 5, the sealing kit 6, and the first protective sleeve 101 are sequentially fitted onto it; on another cable to be connected after its outer sheath has been stripped, the locking member 5, the sealing kit 6, and the second protective sleeve 102 are sequentially fitted onto it; n connectors 3 are inserted into the n limiting recesses 205 of the retainer 2;

[0084] Step S02: Insert the n wires of the cable to be connected, which are fitted into the first protective sleeve 101, into the through-structure 302 of the n connectors 3; insert the m wires of the cable to be connected, which are fitted into the second protective sleeve 102, into the through-structure 302 of the m connectors 3, where m = n ≥ 2.

[0085] Step S04: Move the first protective sleeve 101 and the second protective sleeve 102, and connect the first protective sleeve 101 and the second protective sleeve 102 together by bolt connection or threaded connection, and make the retainer 2 located inside the protective sleeve 1;

[0086] Step S05: Tighten the locking pieces 5 at both ends of the split protective component 1 to complete the sealing and fixing.

[0087] Embodiment 8 of the present invention: A method of using a connection protection device, comprising the following steps:

[0088] Step S01: On one cable to be connected after its outer sheath has been stripped, the locking member 5, the sealing kit 6, and the first protective sleeve 101 are sequentially fitted onto it; on another cable to be connected after its outer sheath has been stripped, the locking member 5, the sealing kit 6, and the second protective sleeve 102 are sequentially fitted onto it; n connectors 3 are inserted into the n limiting recesses 205 of the retainer 2;

[0089] Step S02: Insert the n wires of the cable to be connected, which are fitted into the first protective sleeve 101, into the first wire holes 3010 of the n connectors 3. Each wire is inserted into a first wire hole 3010 of a connector 3. Tighten the locking bolt A 3012 screwed into the first wire hole 3010 until the locking bolt A 3012 is broken off outside the connector 3.

[0090] Insert the m wires of the cable to be connected, which are fitted into the second protective sleeve 102, into the second wire holes 3011 of the m connectors 3 respectively. Each wire is inserted into the second wire hole 3011 of the connector 3. Tighten the B locking bolt 3013 screwed into the second wire hole 3011 until the A locking bolt 3013 is broken off outside the connector 3, where m=n≥2;

[0091] Step S04: Move the first protective sleeve 101 and the second protective sleeve 102, and connect the first protective sleeve 101 and the second protective sleeve 102 together by bolt connection or threaded connection, and make the retainer 2 located inside the protective sleeve 1;

[0092] Step S05: Tighten the locking pieces 5 at both ends of the split protective component 1 to complete the sealing and fixing.

Claims

1. A connection protection device, characterized in that, It includes a split protective component (1) and a retainer (2) disposed within the split protective component (1), wherein a connector (3) is provided on the retainer (2).

2. The connection protection device according to claim 1, characterized in that, The retainer (2) includes a retainer body (201), a plurality of limiting openings (203) in a ring array, a plurality of limiting recesses (205) in a ring array, isolation protrusions (204) and / or weight-reducing through holes (202) disposed at both ends of the retainer body (201). The multiple limiting openings (203) and multiple limiting recesses (205) of the ring array are all through structures. The limiting openings (203) and limiting recesses (205) are both provided on the cage body (201). The limiting openings (203) are located between two adjacent limiting recesses (205).

3. A connection protection device according to claim 2, characterized in that, The limiting recess (205) includes an opening (2051) provided on the wall of the retainer body (201) and a C-shaped recess (2052) connected to the opening (2051) and recessed in the retainer body (201), and the connecting member (3) is provided on the C-shaped recess (2052).

4. A connection protection device according to claim 3, characterized in that, The split protective component (1) includes a first protective sleeve (101) and a second protective sleeve (102) bolted to the first protective sleeve (101). Both the first protective sleeve (101) and the second protective sleeve (102) include a first cross-section pipe section (1021) and a second cross-section pipe section (1022) integrally connected or threadedly connected to the first cross-section pipe section (1021). The cross-sectional area of ​​the first cross-section pipe section (1021) is larger than the cross-sectional area of ​​the second cross-section pipe section (1022).

5. A connection protection device according to claim 3, characterized in that, The split protective component (1) includes a third protective sleeve (103) and a fourth protective sleeve (104) threadedly connected to the third protective sleeve (103). The third protective sleeve (103) includes a third cross-section pipe section (1031) and a fourth cross-section pipe section (1032) integrally connected or threadedly connected to the third cross-section pipe section (1031). The cross-sectional area of ​​the third cross-section pipe section (1031) is larger than the cross-sectional area of ​​the fourth cross-section pipe section (1032). The third cross-section pipe section (1031) is provided with internal threads. The fourth protective sleeve (104) includes a fifth cross-section pipe section (1041) and a sixth cross-section pipe section (1042) integrally connected or threadedly connected to the fifth cross-section pipe section (1041). The cross-sectional area of ​​the fifth cross-section pipe section (1041) is larger than the cross-sectional area of ​​the sixth cross-section pipe section (1042). The fifth cross-section pipe section (1041) is provided with an external thread that matches the internal thread.

6. A connection protection device according to claim 4 or 5, characterized in that, It also includes a sealing ring (4) sleeved on the retainer (2), the sealing ring (4) being disposed between the first protective sleeve (101) and the second protective sleeve (102).

7. A connection protection device according to claim 6, characterized in that, The sealing ring (4) includes a protrusion (401) corresponding to the plurality of limiting openings (203), and the protrusion (401) is provided with a round hole (402) for bolt connection.

8. A connection protection device according to claim 7, characterized in that, The connector (3) includes a connecting body (301), a through structure (302) disposed on the connecting body (301), and an A hole (305) and a B hole (306) disposed on the connecting body (301).

9. A connection protection device according to claim 8, characterized in that, The connector (3) is provided with an observation hole (304), which is located on the connecting body (301) and communicates with the through structure (302).

10. A connection protection device according to claim 9, characterized in that, The connector (3) is provided with two limiting protrusions (303) symmetrically arranged along the center line (8).

11. A connection protection device according to claim 8, characterized in that, The connector (3) has a positioning layer (309) located in the through structure (302), and a first wire hole (3010) is formed on one side of the positioning layer (309), and a second wire hole (3011) is formed on the other side of the positioning layer (309). The positioning layer (309) is located between hole A (305) and hole B (306).

12. A connection protection device according to claim 11, characterized in that, The connector (3) also includes an A locking bolt (3012) threaded to the A hole (305) and a B locking bolt (3013) threaded to the B hole (306).

13. A connection protection device according to claim 10 or 12, characterized in that, It also includes sealing kits (6) and locking components (5) set at both ends of the split protective component (1), wherein the locking component (5) and the protective kit (1) are connected by threads, snaps, or crimping.

14. A connection protection device according to claim 13, characterized in that, The thickness D1 between the through structure (302) and the planar portion (308) of the connecting body (301) is greater than the thickness D2 between the through structure (302) and the arc portion (307) of the connecting body (301).

15. A method of using a connection protection device as described in claims 1-13, characterized in that, Includes the following steps: Step S01: On one cable to be connected after its outer sheath has been stripped, a locking element (5), a sealing kit (6), and a first protective sleeve (101) are sequentially fitted on it. On another cable to be connected after its outer sheath has been stripped, a locking element (5), a sealing kit (6), and a second protective sleeve (102) are sequentially fitted on it. Step S02: Insert the n wires of the cable to be connected, which are fitted into the first protective sleeve (101), into the through structure (302) of the n connectors (3) pre-assembled with the retainer (2); m wires of the cable to be connected, which are fitted into the second protective sleeve (102), are inserted into the through structure (302) of m connectors (3) pre-assembled with the retainer (2), where m = n ≥ 2; Or step S03: Insert the n wires of the cable to be connected, which are fitted into the first protective sleeve (101), into the first wire holes (3010) of the n connectors (3), with each wire corresponding to the first wire hole (3010) of a connector (3), and tighten the A locking bolt (3012) screwed into the first wire hole (3010) until the A locking bolt (3012) is broken off outside the connector (3); Insert the m wires of the cable to be connected, which are fitted into the second protective sleeve (102), into the second wire holes (3011) of the m connectors (3) respectively. Each wire is inserted into the second wire hole (3011) of one connector (3). Tighten the B locking bolt (3013) screwed into the second wire hole (3011) until the B locking bolt (3013) is broken off outside the connector (3), where m=n≥2; Step S04: Move the first protective sleeve (101) and the second protective sleeve (102), and connect the first protective sleeve (101) and the second protective sleeve (102) together by bolt connection or threaded connection, and place the retainer (2) inside the protective kit (1); Step S05: Tighten the locking parts (5) at both ends of the split protective component (1) to complete the sealing and fixing.

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