Power cable wiring protection device with anti-corrosion function

Abstract

The invention discloses a power cable wiring protection device with an anti-corrosion function, and belongs to the technical field of cables, the power cable wiring protection device comprises a shell, a cover plate is hinged to one side of the upper end face of the shell, two bases are fixedly mounted on the lower end face of the interior of the shell, supporting columns are fixedly mounted on the upper end faces of the two bases, and a shell is fixedly mounted at the upper ends of the supporting columns; the cable is arranged in the two sets of shells, limiting mechanisms are arranged in the shells, each limiting mechanism comprises a first curve limiting piece arranged in the corresponding shell, and each first curve limiting piece comprises a threaded rod rotationally connected with the interior of the corresponding shell. According to the scheme, through the arrangement of the limiting mechanism and the optimal design of clamping and stress distribution, the problem of structural redundancy of a traditional rigid clamping ring is effectively solved, the mechanism can fix cables with different diameters, the installation process is simplified, meanwhile, three-dimensional dynamic limiting is achieved, and the mechanism is different from tedious adjustment of a traditional multi-stage clamping ring; the operation time is shortened through the tool-free installation design.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cables, more particularly to a power cable wiring protection device with anti-corrosion function. BACKGROUND

[0002] Power cables are cable products used to transmit and distribute high-power electric energy in the main line of the power system. During the construction process of power engineering, wiring operation is usually required for the cables to complete the connection and laying between circuits. During the wiring process, the cable is generally arranged outdoors, and therefore the protection of the cable is generally important. In recent years, cable wiring boxes are mostly used for outdoor cable wiring protection. The wiring box is one of the electrical accessories. In use, in order to protect the electric wire, the electric wire tube is connected with both ends of the wiring box, the electric wire passes through the electric wire tube and then realizes connection in the wiring box, and the setting of the wiring box can effectively protect the electric wire and the connected electric wire.

[0003] The outdoor wiring protection device of the power cable is subjected to the dual challenges of dynamic mechanical stress and environmental corrosion for a long time. According to the 2024 report of the State Grid Fault Statistics Center, 72% of the cable joint failures in coastal areas are caused by insulation deterioration due to corrosion, and another 18% are caused by vibration loosening. The existing protection device has three technical defects:

[0004] 1. Insufficient adaptability of fixed structure

[0005] Rigid snap ring limitation: the traditional multi-stage snap ring relies on bolt fastening and needs to match the cable diameter to adjust the gasket level. The actual measurement shows that 6-8 groups of bolts need to be screwed for installing a cable with a diameter of Φ30-50mm, which takes ≥15 minutes, and the axial tensile strength is only 120-150N.

[0006] Vibration failure risk: in the rail transit scene, the vibration frequency is 5-40Hz, the pre-tightening force of the snap ring decays by 35% per year, which leads to a cable slip of >2mm and induces arc ablation at the connection point.

[0007] 2. Incomplete anti-corrosion system

[0008] Corrosion of carbon steel chromium-plated metal parts, rust area >30% after 500h of salt spray, resulting in thread jamming and disassembly force >200N;

[0009] Single-layer rubber ring seal aging leakage, compression permanent set >40% after-40℃~85℃ cycle, resulting in water vapor permeability of 0.5g / 24h;

[0010] No drainage design causes internal condensation, cavity water rate 100% at 95% humidity, resulting in insulation resistance reduction to 10 5 Ω.

[0011] 3. Low electrical isolation reliability

[0012] Creepage path is not blocked: the connection cavity is not designed to be filled, the interphase creepage distance is insufficient in a humid environment, i.e. <8mm, resulting in a 3kV power frequency withstand voltage test breakdown rate >10%.

[0013] Arc protection is missing: the distance between exposed terminals is <10mm, the short-circuit arc temperature is instantaneously >3000℃, and the accident rate of igniting the shell material UL 94 HB level is as high as 23 cases / thousand units / year.

[0014] Although there have been improvements in recent years, such as CN2108389Y elastic clamping block, the fundamental limitations have not been overcome: dynamic sealing and fixation cannot be achieved simultaneously: flexible sealing structures such as CN112117700A gel sealing sacrifice mechanical strength and resistance to tension <80N; corrosion prevention increases maintenance burden: replaceable sacrificial anode CN113451851A requires maintenance every 2 years, increasing operation and maintenance costs $150 / time; international standards lag: the current IP protection level of IEC 60529 does not cover the test method for combined chemical corrosion and mechanical vibration conditions.

[0015] Based on the above defects, there is an urgent need for a protective device that integrates: a three-dimensional self-adaptive limiting mechanism with a clamping force decay <10% under vibration, a multi-stage dynamic sealing system, and a filling that enhances electrical isolation 5kV withstand voltage zero breakdown, to meet the full life cycle maintenance-free requirements of harsh scenarios such as new energy power stations, chemical pipelines, and rail transit. SUMMARY

[0016] In view of the problems in the prior art, the purpose of the present application is to provide a power cable connection protection device with corrosion prevention function, which can realize rapid limiting and fixing of the cable.

[0017] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0018] The utility model provides an electric power cable connection protection device with anticorrosion function, including the upper end surface of shell, the one side of upper end surface of shell is hinged with the cover plate, the inside lower end surface of shell is fixedly installed with two groups of base, the upper end surface of two groups of base is fixedly installed with support column, the upper end of support column is fixedly installed with the shell, the inside of shell is provided with the limiting mechanism, the limiting mechanism includes the curve limiting piece one of setting in the shell, the curve limiting piece one includes the threaded rod rotationally connected in the inside of shell, the inside of shell is provided with the gyro wheel, the gyro wheel is covered the outer surface of threaded rod and is rotationally connected with shell, the inside of shell is provided with cable, the cable is connected in the outer surface of ball, the cable is arranged in the inside of two groups of shell, the both sides of shell are provided with threaded sleeve, threaded sleeve is screw transmission connection with threaded rod, the outer surface of threaded sleeve is fixedly installed with transmission rod, the shell, cover plate and shell adopt glass fiber reinforced nylon PA66-GF30, and the surface is treated through fluorocarbon coating, threaded rod, arc rod adopt 316L stainless steel and are galvanized passivation, the inside wall of shell is sprayed zinc chrome anticorrosion conductive coating, and the ground terminal is connected with cable shielding layer, the bottom of shell is equipped with drain hole, and the hole is covered with breathable moisture-proof film e-PTFE.

[0019] The inside of transmission rod is fixedly installed with wedge one, both sides of shell are provided with the sliding groove, and the horizontal rod is slidably connected between two groups of sliding grooves.

[0020] The inside of shell is provided with insulated wiring cavity, and the conductive terminal row is installed in the cavity, the end of cable is stripped and is crimped in the wiring hole of terminal row, so that electrical communication is realized, the inside of cover plate is fixed with insulating sealing pad, and a sealed cavity is formed after closing with shell.

[0021] Three sealing structures are arranged at the cable inlet: first stage: conical rubber sealing ring, inner diameter is self-adaptive to cable outer diameter; second stage: waterproof gel filling layer; third stage: heat shrink tube covers cable and sealing ring interface

[0022] The surface of terminal row is coated with arc-resistant ceramic coating, and the distance between adjacent wiring holes is greater than or equal to 15mm; the insulated wiring cavity is filled with flame-retardant epoxy resin adhesive, covering all exposed conductors.

[0023] The inside of wedge one is provided with wedge two, one end of horizontal rod extends to the outside of shell and is fixedly connected with wedge two, and wedge one and wedge two are both arranged in trapezoidal shape.

[0024] The outside of cable is provided with clamping plate one, the clamping plate one is fixedly connected with horizontal rod, and the inner wall of clamping plate one is fixedly installed with antiskid rubber pad.

[0025] The limiting mechanism further comprises a curved limiting piece two arranged on the upper side of the curved limiting piece one, the curved limiting piece two comprises a notch opened at the end of the transmission rod, and a rotating shaft is rotatably connected in the notch.

[0026] The oblique upper side of the shell is provided with a top block, a connecting rod is rotatably connected between each of the two rotating shafts and the top block, and a vertical rod is fixedly installed between the top block and the horizontal rod.

[0027] The limiting mechanism further comprises clamping limiting pieces arranged on both sides of the threaded rod, the clamping limiting pieces comprise arc rods fixedly installed on both sides of the transmission rod, transmission shafts are fixedly installed on the inner sides of the arc rods, and the transmission shafts are slidingly connected with the shell.

[0028] The shell is internally provided with a clamping plate two, the clamping plate two is arranged on one side of the cable, and one end of the transmission shaft extends into the interior of the shell and is fixedly connected with the clamping plate two.

[0029] The clamping limiting pieces are arranged in two groups and symmetrically arranged on both sides of the shell, the curved limiting piece one, the curved limiting piece two and the two groups of clamping limiting pieces are each arranged in two groups and respectively arranged at both ends in the interior of the shell.

[0030] The outer side of the shell is provided with two groups of handles, one end of each of the two groups of threaded rods extends to the outer side of the shell and is fixedly connected with the corresponding handle, and the limiting mechanism is symmetrically arranged in two groups and symmetrically arranged on both sides in the interior of the shell.

[0031] Compared with the prior art, the beneficial effects of the present application are:

[0032] (1) The limiting mechanism is arranged, the clamping and stress distribution optimization design are adopted, the structural redundancy problem of the traditional rigid snap ring is effectively solved, the mechanism can be fixed for cables with different diameters, the installation process is simplified, three-dimensional dynamic limiting is realized, and the mechanism is different from the complicated adjustment of the traditional multi-stage snap ring, the operation time is shortened through the tool-free installation design.

[0033] (2) The present application realizes the integration of electrical connection and physical fixation of the cable through the design of the insulation wiring cavity and the terminal row, and avoids the reliability problem caused by the separation of wiring and fixation in the traditional device.

[0034] (3) The present application adopts three-stage dynamic sealing + anticorrosion material system, significantly improves the salt mist resistance, passes the GB / T 10125 neutral salt mist test ≥1000h, has no corrosion in the acid and alkali pH 3-11 environment and has the waterproof performance IP68 level, and solves the long-term protection pain points in outdoor humid and chemical corrosion scenes. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a whole structure schematic view of the present application.

[0036] Figure 2 schematic diagram of the inside of the shell of the present application;

[0037] Figure 3 schematic diagram of the inside of the shell of the present application; Figure 2 schematic diagram of the inside of the shell of the present application;

[0038] Figure 4 schematic diagram of the inside of the shell of the present application; Figure 2 schematic diagram of the inside of the shell of the present application;

[0039] Figure 5 schematic diagram of the inside of the shell of the present application; Figure 4 schematic diagram of the inside of the shell of the present application;

[0040] Explanation of reference numerals in the drawings:

[0041] 1, shell; 2, cover plate; 3, cable; 4, base; 5, support column; 6, shell body; 7, threaded rod; 8, roller; 9, threaded sleeve; 10, transmission rod; 11, sliding groove; 12, wedge block one; 13, wedge block two; 14, crossbar; 15, clamping plate one; 16, rotating shaft; 17, top block; 18, slot; 19, connecting rod; 20, vertical rod; 21, arc rod; 22, transmission rod; 23, clamping plate two; 24, handle. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] Please refer to Figures 1 to 5The utility model provides an anti-corrosion power cable terminal protection device, which comprises an outer shell 1, a cover plate 2 hinged to one side of the upper end surface of the outer shell 1, two groups of bases 4 fixedly installed on the lower end surface of the outer shell 1, support columns 5 fixedly installed on the upper end surfaces of the two groups of bases 4, a shell body 6 fixedly installed on the upper end of each support column 5, a limiting mechanism arranged in the shell body 6, the limiting mechanism comprising a curved limiting piece one arranged in the shell body 6, a threaded rod 7 rotatably connected to the inside of the shell body 6, a roller 8 arranged in the shell body 6, the roller 8 being sleeved on the outer surface of the threaded rod 7 and rotatably connected to the shell body 6, a cable 3 arranged in the outer shell 1, the cable 3 being wound around the outer surface of the roller, the cable 3 being arranged in the two shell bodies 6, threaded sleeves 9 arranged on the two sides of the shell body 6, the threaded sleeves 9 being in screw transmission connection with the threaded rod 7, and a transmission rod 10 fixedly installed on the outer surface of each threaded sleeve 9.

[0044] A wedge block one 12 is fixedly installed on the inner side of the transmission rod 10, and sliding grooves 11 are formed in the inner walls of the two sides of the shell body 6.

[0045] A wedge block two 13 is arranged on the inner side of the wedge block one 12, one end of a cross rod 14 extends to the outside of the shell body 6 and is fixedly connected to the wedge block two 13, and the wedge block one 12 and the wedge block two 13 are both arranged in a trapezoidal shape.

[0046] A clamping plate one 15 is arranged on the outer side of the cable 3 and is fixedly connected to the cross rod 14, and an antiskid rubber pad is fixedly installed on the inner wall of the clamping plate one 15.

[0047] A three-stage sealing structure is arranged at the inlet of the cable 3, the three-stage sealing structure comprising a first stage, a tapered rubber sealing ring, an inner diameter self-adapting to the outer diameter of the cable; a second stage, a waterproof gel filling layer; and a third stage, a heat-shrinkable tube covering the cable and the sealing ring interface

[0048] First, from both ends of the shell 1, two groups of cables 3 are inserted into the limiting mechanism inside the shell 1, then manually twist the handle 24 on the threaded rod 7 to rotate the threaded rod 7, the threaded groove on the outer surface of the threaded rod 7 is a bidirectional threaded groove, so the threaded rod 7 rotates, the two groups of threaded sleeves 9 on the outer surface of the threaded rod 7 are connected in a spiral transmission, and the two groups of transmission rods 10 will be displaced inward, the transmission rod 10 displacement will carry the wedge block one 12 displacement, the wedge block one 12 and the wedge block two 13 on the cross bar 14 collide and slide, the wedge block two 13 is displaced to the cable 3 direction, so under the action of the two groups of wedge block two 13, the cross bar 14 can drive the clamping plate one 15 to tightly adhere to the cable 3, and then clamp and limit the cable 3.

[0049] The limiting mechanism further comprises a curved limiting member two arranged on the upper side of the curved limiting member one, and the curved limiting member two comprises a notch 18 formed at the end of the transmission rod 10, and a rotating shaft 16 rotatably connected in the notch 18.

[0050] The upper side of the shell 6 is provided with a top block 17, and the two rotating shafts 16 are rotatably connected with the top block 17 through connecting rods 19, and the top block 17 is fixedly connected with the vertical rod 20 between the cross bar 14.

[0051] The shell 6 is internally provided with an insulating wiring cavity, and a conductive terminal row is mounted in the cavity. The end of the cable 3 is stripped of the insulating layer and is crimped in the wiring hole of the terminal row to realize electrical connection. The inner side of the cover plate 2 is fixedly provided with an insulating sealing gasket, and after being closed, it forms a sealed cavity with the shell 1. After the cable 3 is inserted into the shell 6, it is first fixed by the limiting mechanism, then the end insulating layer is stripped and inserted into the terminal row, and finally epoxy resin glue is injected for sealing.

[0052] The surface of the terminal row is coated with an electric arc resistant ceramic coating, and the distance between adjacent wiring holes is greater than or equal to 15 mm. The insulating wiring cavity is filled with flame-retardant epoxy resin glue, covering all exposed conductors.

[0053] Secondly, the curved limiting member two can also be used, that is, when the two groups of transmission rods 10 are synchronously displaced inward, the rotating shafts 16 rotatably connected in the notches 18 formed at the ends of the two groups of transmission rods 10 are rotatably connected with the top block 17 through the connecting rods 19, so that the cross bar 14 can be driven to slide in the sliding groove 11 under the cooperation of the two connecting rods 19, and then the cable 3 is limited and fixed.

[0054] The limiting mechanism further comprises clamping limiting members arranged on both sides of the threaded rod 7, and the clamping limiting members comprise arc rods 21 fixedly installed on both sides of the transmission rod 10, arc rods 21 are fixedly installed with transmission shafts 22 on the inner side, and the transmission shafts 22 are slidingly connected with the shell 6.

[0055] The shell 6 is internally provided with a clamping plate two 23, which is arranged on one side of the cable 3, and one end of the transmission shaft 22 extends into the interior of the shell 6 and is fixedly connected with the clamping plate two 23.

[0056] The clamping limiting members are provided in two groups and symmetrically arranged on both sides of the shell 6, and the curved limiting member one, the curved limiting member two and the two groups of clamping limiting members are all provided in two groups and respectively arranged at both ends inside the shell 6.

[0057] The outer side of the shell 1 is provided with two groups of handles 24, one end of each of the two groups of threaded rods 7 extends to the outer side of the shell 1 and is fixedly connected with the corresponding handle 24, and the limiting mechanism is symmetrically provided in two groups and symmetrically arranged on both sides inside the shell 1.

[0058] Secondly, when the two groups of transmission rods 10 are displaced, they will carry the two groups of arc rods 21 for displacement, each group of arc rods 21 will extrude the transmission shaft 22, and the clamping plate two 23 will be displaced to the cable 3 through the transmission shaft 22, and the two groups of clamping plate two 23 will be synchronously displaced to the cable 3, clamping and fixing the cable 3, further improving the fixing effect of the cable 3, and the limiting mechanism arranged in a curve further enhances the fixing effect of the cable 3.

[0059] The existing cable connection protection device generally has the structural defect of insufficient stability of the cable 3, which is easily displaced axially under external tension or vibration interference, resulting in stress concentration at the connection port. The traditional solution adopts a multi-stage split ring structure combined with screw fastening design, which can realize basic positioning function, but exposes obvious engineering application short board: first, the multi-layer nested ring assembly needs to be manually adjusted to match the cable 3 specifications, and the ring position needs to be repeatedly corrected and the screws need to be screwed during installation, which significantly improves the operation complexity; second, the rigid fixed structure lacks dynamic stress buffering mechanism, which is prone to thread slippage or ring deformation in long-term vibration environment, which in turn increases the risk of interface loosening; third, frequent disassembly and maintenance will accelerate the wear of the sealing element, affecting the overall sealing performance and electrical performance stability of the protection device, which increases the system maintenance cost and fault risk, therefore, the present scheme sets a limiting mechanism, optimizes the design through clamping and stress distribution, effectively solves the structural redundancy problem of the traditional rigid ring, and can fix cables 3 of different diameters, simplifies the installation process, realizes three-dimensional dynamic limiting, and is different from the traditional multi-stage ring adjustment.

[0060] The use method is as follows: firstly, the two groups of cables 3 are respectively inserted into the limiting mechanisms inside the shell 1 from two ends of the shell 1, then the handle 24 on the threaded rod 7 is manually twisted to rotate the threaded rod 7, the threaded groove on the outer surface of the threaded rod 7 is a bidirectional threaded groove, so that the two groups of threaded sleeves 9 connected in a screw transmission manner on the outer surface of the threaded rod 7 are displaced inward along the respective transmission rods 10, the transmission rods 10 are displaced to carry the wedge blocks one 12 to be displaced, the wedge blocks one 12 are collided and slid with the wedge blocks two 13 on the cross rod 14, so that the wedge blocks two 13 are displaced towards the cables 3, so that the cross rod 14 drives the clamping plates one 15 to tightly adhere to the cables 3 under the action of the two groups of wedge blocks two 13, and the cables 3 are clamped and limited;

[0061] Secondly, the curved limiting member two can also be used, that is, when the two groups of transmission rods 10 are synchronously displaced inward, the rotating shafts 16 rotatably connected in the notches 18 at the ends of the two groups of transmission rods 10 are rotatably connected with the top blocks 17 through the connecting rods 19, so that the cross rod 14 can also be driven to slide in the sliding groove 11 towards the cables 3 under the cooperation of the two groups of connecting rods 19, and the cables 3 are limited and fixed.

[0062] Secondly, when the two groups of transmission rods 10 are displaced, the two groups of arc rods 21 are carried to be displaced, each group of arc rods 21 presses the transmission shaft 22, and the clamping plates two 23 are displaced towards the cables 3 through the transmission shaft 22, the two groups of clamping plates two 23 are synchronously displaced towards the cables 3 to clamp and fix the cables 3, and the fixing effect of the cables 3 is further improved, and the limiting mechanism arranged in a curved mode further enhances the fixing effect of the cables 3.

[0063] The electrical performance analysis of the present application and the traditional clasp type protection device as the comparative example 1 is shown in the following table 1.

[0064] Table 1

[0065]

[0066] The anti-corrosion performance analysis of the present application and the traditional clasp type protection device as the comparative example 1 is shown in the following table 2.

[0067] Table 2

[0068]

[0069]

[0070] The mechanical performance analysis of the present application and the traditional clasp type protection device as the comparative example 1 is shown in the following table 3.

[0071] Table 3

[0072]

[0073] As can be seen from the above table 1, table 2, table 3, the anti-corrosion performance of the application breaks through, the dynamic sealing combination of the three-level sealing structure of the conical rubber ring, the gel and the heat shrink tube, in the 10Hz vibration, temperature difference-40℃~85℃ cycle test, the water vapor penetration amount at the cable inlet is <0.01g / 24h, and the traditional structure is >0.5g; Material synergy corrosion: 316L stainless steel galvanized parts still maintain 9 corrosion grade after 1000h salt spray, and the tensile strength retention rate of glass fiber nylon shell is >95% after UV aging 2000h.

[0074] The electrical connection reliability of the application, the synergistic effect of the potting resin: the UL 94V-0 grade flame-retardant epoxy resin glue realizes: filling electrical gap, suppressing creepage, compared with air medium, the voltage resistance increases by 50%, the terminal displacement amount is <0.1mm in the stress buffer vibration environment, and the insulation resistance decreases by <1 order of magnitude after the moisture-proof isolation in the humidity test.

[0075] The dynamic limiting advantage of the application, three-dimensional self-adaptive clamping in variable frequency vibration 5-200Hz test, the cable slip amount is always ≤0.2mm, and the traditional scheme is >2mm, which is due to: the self-locking effect of the wedge block mechanism static friction coefficient μs=0.8, the curvature compensation design of the arc rod distributes the clamping force uniformly, and the contact pressure deviation is <10%.

[0076] In summary, through the triple innovation of material-structure-process, the device of the application breaks through the 1000h salt spray limit in the anti-corrosion life, the vibration clamping force decay rate is controlled within 8% in the dynamic stability, the 5kV voltage resistance zero breakdown and continuous high insulation resistance are realized in the electrical safety, and the corrosion failure and loosening risk of the cable joint in the outdoor harsh environment are solved, so that the standardized protection scheme is provided for high requirement scenes such as energy, chemical industry, rail transit and the like.

[0077] The above is only the preferred specific embodiment of the application; however, the protection scope of the application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A power cable terminal protection device with anti-corrosion function, comprising a shell (1), a cover plate (2) is hinged on one side of the upper end face of the shell (1), characterized in that: The inner lower end face of the shell (1) is fixedly provided with two groups of bases (4), the upper end faces of the two groups of bases (4) are fixedly provided with support columns (5), the upper ends of the support columns (5) are fixedly provided with housings (6), the housings (6) are internally provided with limiting mechanisms, the limiting mechanisms comprise curved limiting members one arranged in the housings (6), the curved limiting members one comprise screw rods (7) rotatably connected in the housings (6), the housings (6) are internally provided with rollers (8), the rollers (8) are sleeved on the outer surfaces of the screw rods (7) and rotatably connected with the housings (6), the shell (1) is internally provided with cables (3), the cables (3) are wound on the outer surfaces of the rollers, the cables (3) are arranged in the housings (6), the two sides of the housings (6) are provided with threaded sleeves (9), the threaded sleeves (9) are screw transmissionally connected with the screw rods (7), the outer surfaces of the threaded sleeves (9) are fixedly provided with transmission rods (10), the shell (1), the cover plate (2) and the housings (6) are made of glass fiber reinforced nylon PA66-GF30 and are treated with fluorocarbon coating on the surfaces, the screw rods (7) and the arc rods (21) are made of 316L stainless steel and are galvanized and passivated, the inner walls of the shell (1) are sprayed with zinc-chromium anticorrosive conductive coating, and a grounding terminal is connected with a cable shielding layer; the bottom of the housing (6) is provided with a drainage hole, and the hole is covered with a breathable and moisture-proof membrane e-PTFE.

2. The power cable termination protection device with anti-corrosion function according to claim 1, characterized in that: The inner side of the transmission rod (10) is fixedly provided with a wedge block one (12), the two inner walls of the housing (6) are provided with sliding grooves (11), the two groups of sliding grooves (11) are slidably connected with a cross rod (14), the housing (6) is internally provided with an insulating wiring cavity, the cavity is provided with a conductive terminal row, the end of the cable (3) is stripped of the insulating layer and is crimped in a wiring hole of the terminal row to realize electrical connection; the inner side of the cover plate (2) is fixedly provided with an insulating sealing gasket, and the cover plate (2) and the shell (1) form a sealed cavity after being closed, the surface of the terminal row is coated with an arc-resistant ceramic coating, and the distance between adjacent wiring holes is greater than or equal to 15mm; the insulating wiring cavity is filled with flame-retardant epoxy resin glue, and all exposed conductors are covered, and a three-stage sealing structure is arranged at the inlet of the cable (3): the first stage is a conical rubber sealing ring with an inner diameter self-adapting to the outer diameter of the cable; the second stage is a waterproof gel filling layer; the third stage is a heat shrink tube covering the cable and the sealing ring interface.

3. The power cable termination protection device with anti-corrosion function according to claim 2, characterized in that: The inner side of the wedge block one (12) is provided with a wedge block two (13), one end of the cross rod (14) extends to the outside of the housing (6) and is fixedly connected with the wedge block two (13), and the wedge block one (12) and the wedge block two (13) are both arranged in a trapezoidal shape.

4. The power cable termination protection device with anti-corrosion function according to claim 1, characterized in that: The outer side of the cable (3) is provided with a clamping plate one (15), the clamping plate one (15) is fixedly connected with the cross rod (14), and the inner wall of the clamping plate one (15) is fixedly provided with an antiskid rubber pad.

5. The power cable termination protection device with anti-corrosion function according to claim 1, characterized in that: The limiting mechanism further comprises a curved limiting member two arranged on the upper side of the curved limiting member one, and the curved limiting member two comprises a notch (18) formed at the end of the transmission rod (10), and the notch (18) is rotatably connected with a rotating shaft (16).

6. The power cable termination protection device with anti-corrosion function according to claim 5, characterized in that: The oblique upper side of the shell (6) is provided with a top block (17), and the two groups of rotating shafts (16) are rotatably connected with the top block (17) through connecting rods (19), and the top block (17) is fixedly connected with the horizontal rod (14) through a vertical rod (20).

7. The power cable termination protection device with anti-corrosion function according to claim 6, characterized in that: The limiting mechanism further comprises clamping limiting members arranged on both sides of the threaded rod (7), the clamping limiting members comprise arc rods (21) fixedly installed on both sides of the transmission rod (10), the inner side of the arc rod (21) is fixedly installed with a transmission shaft (22), and the transmission shaft (22) is slidably connected with the shell (6).

8. The power cable termination protection device with anti-corrosion function according to claim 7, characterized in that: The shell (6) is internally provided with a clamping plate two (23), the clamping plate two (23) is arranged on one side of the cable (3), and one end of the transmission shaft (22) extends to the inside of the shell (6) and is fixedly connected with the clamping plate two (23).

9. The power cable termination protection device with anti-corrosion function according to claim 8, characterized in that: The clamping limiting members are provided with two groups and are symmetrically arranged on both sides of the shell (6), the curve limiting member one, the curve limiting member two and the two groups of clamping limiting members are provided with two groups and are respectively arranged at both ends inside the shell (6).

10. The power cable termination protection device with anti-corrosion function according to claim 9, characterized in that: The outer side of the shell (1) is provided with two groups of handles (24), one end of the two groups of threaded rods (7) extends to the outer side of the shell (1) and is fixedly connected with the corresponding handle (24), and the limiting mechanism is symmetrically provided with two groups and is symmetrically arranged on both sides of the inside of the shell (1).

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