A warning light for multi-layer insulated space electrical equipment terminals that can be installed without power interruption and its installation method.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIAXING XINNIU ELECTRIC POWER TECH CO LTD
- Filing Date
- 2026-03-20
- Publication Date
- 2026-06-30
Smart Images
Figure CN121876394B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electrical equipment insulation protection technology, specifically to a multi-layered insulated space electrical equipment terminal warning light and its installation method that can be installed without power interruption. It is applicable to the insulation protection of various electrical equipment heads with cables, such as inlet and outlet clamps, terminals, and grounding rings, and can achieve safe installation and reliable fixation under power interruption conditions. Background Technology
[0002] During the operation of the power system, the incoming and outgoing line clamps, terminals, grounding rings and other electrical equipment heads are exposed to the outdoor environment for a long time. They are susceptible to wind, rain, foreign object corrosion and accidental contact, which may cause safety hazards such as leakage and discharge. Therefore, they need to be equipped with insulating covers for protection.
[0003] Currently, insulating covers on the market are mainly divided into two categories: traditional silicone rubber insulating covers and improved insulating covers, but both have significant technical defects. Traditional silicone rubber insulating covers suffer from rapid aging and cracking, resulting in a short outdoor service life and an inability to guarantee long-term insulation performance. Improved insulating covers mainly use flexible silicone material, relying on magnets to close the seal, but this still does not solve the aging problem of silicone rubber materials; or they use rigid plastic material, relying on the material's own elasticity to restore the seal. To ensure elastic opening and closing capability, the cover is generally thin, resulting in poor insulation performance in high-voltage scenarios, and it is prone to creepage and discharge phenomena in harsh environments such as when there are foreign objects on the surface or in heavy rain and fog. At the same time, the installation position of power equipment heads is special, often cooperating with horizontal, vertical, or inclined conductors, and horizontally suspended installations are subject to large swing amplitudes due to wind. Existing similar products lack direct mechanical locking structures, relying only on the elasticity of the material for fixation. After long-term outdoor operation, the material ages and its elasticity degrades, leading to insufficient installation fixation strength and a risk of cover detachment. In addition, existing products are all single-layer insulation structures. When foreign objects adhere to the surface of the cover or when it is soaked by rain, the insulation performance drops significantly and cannot meet the safety protection requirements in high-voltage scenarios.
[0004] For example, the magnetic insulating cover disclosed in patent CN121331572A, while enabling convenient installation without power interruption, still fails to overcome the technical bottlenecks of existing insulating covers. This cover uses a single-layer shell structure without additional insulating chamber design, resulting in a short creepage distance. In high-voltage scenarios or harsh environments with foreign matter adhering to the surface or rain penetration, its insulation performance is prone to significant degradation, easily leading to creepage and discharge phenomena. Furthermore, it relies solely on the attraction force between the magnetic components and the metal connectors to achieve shell closure and fixation, lacking a dedicated mechanical locking structure. This presents challenges in applications involving electrical equipment with water ingress. Under conditions of horizontal suspension and swaying due to wind, long-term outdoor operation can easily lead to adsorption failure, posing a safety hazard of the cover falling off. At the same time, if the shell of the cover is made of flexible insulating material, it still cannot solve the problem of rapid aging and cracking of the material. If rigid insulating plastic is used, there is no optimization design for structural strength and aging resistance, making it difficult to adapt to the long-term operation requirements of complex outdoor conditions. Moreover, the cover only has basic insulation protection functions and lacks warning design, so it cannot play a warning role to prevent accidental touch in outdoor environments, and the protection is not comprehensive enough.
[0005] To address the shortcomings of the existing technologies, there is an urgent need to develop a multi-layered insulated spatial power equipment pile warning light with a multi-layered insulation structure, reliable mechanical interlocking, the ability to be installed without power interruption, and adaptability to suspended working conditions, in order to solve problems such as aging, insufficient insulation performance, insecure fixing, and installation limitations. Summary of the Invention
[0006] The purpose of this invention is to overcome the technical defects of existing insulating covers and provide a multi-layer insulating space electrical equipment pile head warning light and installation method that can be installed without power interruption. This achieves multi-layer insulation protection, reliable mechanical interlocking, and safe installation without power interruption, while improving the anti-aging ability, structural strength and suspension fixation stability of the cover, making it suitable for various complex outdoor working conditions.
[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:
[0008] This invention discloses a multi-layer insulated spatial electrical equipment head warning light that can be installed without power interruption. It includes an insulated cover, comprising an inner layer plate and an outer layer plate located outside the inner layer plate. The inner and outer layer plates are connected by a connecting plate, which divides the cavity between the inner and outer layer plates into a left slide rail and a right slide rail. A left slider and a right slider are slidably mounted in the left and right slide rails, respectively. A first opening is formed on both sides of the inner layer plate, and a second opening is formed on both sides of the outer layer plate. The second opening is located outside the first opening, and an installation channel is formed between the first and second openings. Through this installation channel, an electrical equipment head with a cable can be inserted into the inner layer plate. The left and right sliders are equipped with insertion ports. By inserting an insulating rod into the insertion port, the left and right sliders can be slid towards the installation channel until they contact and interlock to close the installation channel.
[0009] Preferably, the inner layer plate is a semi-circular tube, the outer layer plate is an open circular tube, and the two sides of the first opening correspond one-to-one with the two sides of the second opening.
[0010] Preferably, a first unidirectional ratchet is provided on the inner wall of the outer layer plate along the sliding direction of the left and right sliders; a second unidirectional ratchet is provided on the sliding surface of the left and right sliders, and the first and second unidirectional ratchets form an interlocking unidirectional ratchet structure; when the left and right sliders slide along the left and right slides respectively in a preset direction, the two sets of ratchets generate alternating meshing and relative sliding motion. By restricting the irregular contour of the unidirectional ratchet, the left and right sliders are mechanically interfered in the opposite direction, thereby realizing unidirectional feeding and reverse self-locking.
[0011] Preferably, the left slider includes a left outer end plate and a left inner end plate, with a gap between the left outer end plate and the left inner end plate to form a double-layer insulation structure. The tails of the left outer end plate and the left inner end plate are connected, and the heads of the left outer end plate and the left inner end plate are connected to form a male head. The right slider includes a right outer end plate and a right inner end plate, with the tails of the right outer end plate and the right inner end plate connected. The heads of the outer end plate and the right inner end plate are designed with an open end to form a female head. The male head can be inserted into the female head to achieve mutual locking between the left slider and the right slider.
[0012] Preferably, the upper end of the cover is provided with a front end plate that can be closed. Along the sliding direction of the left and right sliders, two first grooves are opened on the front end plate, and the insertion ports on the left and right sliders can be exposed through the first grooves. From the edge of the front end plate to the center of the front end plate, a U-shaped groove is opened on the front end plate, and the opening end of the U-shaped groove is in the same direction as the direction of the installation channel.
[0013] The front-end panel is a transparent and light-transmitting panel. A transparent shell is connected to the inner side of the front-end panel. A light-emitting component is embedded in the transparent shell. The light-emitting component includes a solar panel. Several LED beads are installed in the shell around the solar panel. A photosensitive sensor is also provided in the transparent shell. The LED beads, the photosensitive sensor, and the solar panel are electrically connected. When the outdoor light dims, the LED beads emit light when triggered by the photosensitive sensor, achieving the effect of a warning light.
[0014] Preferably, the upper end of the cover is provided with a rear sealing plate that can be closed. Along the sliding direction of the left and right sliders, two second sliding grooves are opened on the rear sealing plate, and the insertion ports on the left and right sliders can be exposed through the second sliding grooves. From the edge of the rear sealing plate to the center of the rear sealing plate, an irregular groove is opened on the rear sealing plate, and the opening end of the irregular groove is aligned with the direction of the installation channel opening. The irregular groove includes a rectangular groove and a semi-circular groove communicating with the rectangular groove.
[0015] Preferably, a first limiting member is connected to the front end plate and the rear end plate at the end of the left slide rail. The first limiting member extends into the gap between the left outer end plate and the left inner end plate. When the male head on the left slider is inserted into the female head on the right slider to close the installation channel, the first limiting member can abut against the tail of the left outer end plate and the left inner end plate. A baffle is provided inside the female head. A second limiting member is connected to the front end plate and the rear end plate. The second limiting member is located near the installation channel. When the male head on the left slider is inserted into the female head on the right slider to close the installation channel, the second limiting member can abut against the baffle.
[0016] Preferably, a first-order flip-type locking mechanism is rotatably connected to the inner side of the front end plate. The first-order flip-type locking mechanism includes a first-order L-shaped structural block, which is rotatably connected to the inner side of the front end plate. The first-order L-shaped structural block includes a first end and a second end. The weight of the first end is greater than the weight of the second end. When the U-shaped slot is facing downwards, the weight of the first end causes the second end to block the upper end of the U-shaped slot. A locking hole is provided on the front end plate, and a protrusion is protruding on the first end. When the second end is triggered to rotate counterclockwise to vertical, the protrusion on the first end is embedded in the locking hole to fix the position of the first-order L-shaped structural block.
[0017] Preferably, a second flip-type locking mechanism is rotatably connected to the inner side of the rear sealing plate. The second flip-type locking mechanism includes a second L-shaped structural block, which is rotatably connected to the inner side of the rear sealing plate. The second L-shaped structural block includes a third end and a fourth end. The weight of the third end is greater than the weight of the fourth end. When the irregular groove is facing downwards, the weight of the third end causes the fourth end to be horizontally blocked in the irregular groove. A locking hole is provided on the rear sealing plate, and a protrusion is protruding on the third end. When the fourth end is triggered to rotate counterclockwise to vertical, the protrusion on the third end is embedded in the locking hole to fix the position of the second L-shaped structural block.
[0018] This invention discloses a method for installing a warning light for a multi-layer insulated space electrical equipment pile head that can be installed without power interruption. The method includes the following steps:
[0019] Step 1): Place the left slider and right slider at the top of the left slide and right slide respectively to ensure that the installation channel opening is fully open;
[0020] Step 2): Connect two adjustable-pitch down bars to the insulated link bar. Insert the two down bars into the insertion ports at the tails of the left and right sliders from the side, respectively. Lift the link bar. Under the weight of the insulating cover itself, the left and right sliders will be stably held at the top of the left and right slides. Then raise the insulating cover above the head of the power equipment with cables.
[0021] Step 3): Align the installation channel with the power equipment head with the cable below, with the U-shaped slot on the front panel aligned with one end of the cable and the irregularly shaped slot on the rear cover aligned with the power equipment head. Lower the insulating cover and gradually insert the power equipment head with the cable into the installation channel. As the power equipment head with the cable enters the installation channel, the cable and the power equipment head will simultaneously or sequentially contact end number two on L-shaped block one and end number four on L-shaped block two. This will eventually push end number two and end number four on L-shaped block one into a vertical position. When end number two on L-shaped block one is pushed into a vertical position, the protrusion on end number one engages with the locking hole to fix the position of L-shaped block one. When end number four on L-shaped block two is pushed into a vertical position, the protrusion on end number three engages with the locking hole to fix the position of L-shaped block two. The L-shaped structural block and the No. 2 L-shaped structural interlocking are used to clamp the cables and power equipment heads, thus achieving the initial installation of the insulating cover.
[0022] Step 4): Pull down the link bar again. Under the action of the two downward rods, the left and right sliders slide down along the left and right slides respectively in the preset direction. Since the first and second unidirectional ratchets form an interlocking unidirectional ratchet structure, the two sets of ratchets produce alternating meshing and relative sliding motion. Through the restriction of the irregular contour of the unidirectional ratchet, the left and right sliders are mechanically interfered in the opposite direction, thereby realizing unidirectional feeding and reverse self-locking.
[0023] Step 5): When the male head on the left slider is inserted into the female head on the right slider to the limit position, the first limiting member can hold the tail of the left outer end plate and the left inner end plate, and the second limiting member can hold the baffle plate, so that the left and right sliders with double insulation structure interlock and close the installation channel opening.
[0024] Step 6): Move the link bar horizontally to pull the two pressure rods out of the insertion ports at the tails of the left and right sliders. Then you can remove them and complete the installation.
[0025] Compared with the prior art, the present invention has the following beneficial effects:
[0026] Multi-layer insulation structure enhances protection performance: The enclosure adopts a double-layer shell structure consisting of an inner layer plate, an outer layer plate, and a connecting plate. The left and right sliders are double-layer insulation structures, forming multiple air-insulated chambers, which greatly increases the creepage distance and insulation space. Even if foreign objects adhere to the surface of the enclosure or it is soaked by rain, it can still maintain stable insulation performance, making it suitable for high-voltage scenarios and eliminating breakdown discharge problems caused by close contact with live parts.
[0027] Double mechanical interlocking ensures reliable fixation: No. 1 and No. 2 flip-type interlocking mechanisms achieve automatic mechanical interlocking of the slot; in addition, the interlocking self-locking closure achieves unidirectional slider feeding and reverse self-locking through a unidirectional ratchet structure, which, together with No. 1 and No. 2 limiters, restricts excessive slider sliding, forming a double mechanical interlocking. This completely solves the problem of existing products relying on material elasticity for fixation and being prone to falling off after aging. It is suitable for suspended working conditions such as wind swaying, and the fixation strength is long-lasting and stable.
[0028] Uninterrupted power supply installation adapts to site requirements: Remote operation is achieved through the link bar and pressure rod, allowing installation to be completed without power outages, thus avoiding the impact on production and daily life caused by power outages; During installation, the flip-type locking mechanism can be flexibly closed, and sufficient installation space can be reserved (such as by reserving slots on the No. 1 and No. 2 L-shaped structural blocks), adapting to the special installation positions of various wiring terminals and grounding rings, making operation convenient and efficient.
[0029] The structural design is adaptable to various scenarios: the U-shaped slot on the front panel is adapted to cable clamping, the irregular slot on the rear cover is adapted to plate-shaped wiring clamps, and the positioning is achieved by utilizing the principle that the gaps on both sides of the cover are smaller than the middle equipment head (that is, the power equipment head located inside the cover is limited by the rear cover and cannot slide laterally), thus preventing the cover from sliding along the wire.
[0030] The cover is preferably cylindrical in shape, which can fully cover the equipment head. After the flip-type locking mechanism is locked, an additional insulating layer is formed on the top to resist the invasion of foreign objects such as tree branches, further improving the insulation capability.
[0031] Improved structural strength and lifespan: Opening and closing can be achieved without relying on material elasticity. The cover can be designed with sufficient wall thickness to improve structural strength and anti-aging ability, extend outdoor service life, and adapt to long-term operation in complex outdoor environments.
[0032] When the outdoor light dims, the LED lights up when triggered by the photosensor, serving as a warning light. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0034] Figure 2 This is a schematic diagram of the internal structure of the present invention.
[0035] Figure 3 This is a schematic diagram of the structure after removing the back cover plate according to the present invention.
[0036] Figure 4 This is a schematic diagram of the structure of the present invention without the front-end board.
[0037] Figure 5 This is a schematic diagram of the left and right slider assembly of the present invention.
[0038] Figure 6 This is a three-dimensional view of the left slider of the present invention.
[0039] Figure 7 This is the front view of the left slider of the present invention.
[0040] Figure 8 This is a perspective view of the right slider of the present invention.
[0041] Figure 9 This is the main view of the right slider of the present invention.
[0042] Figure 10 This is a schematic diagram of part of the cover structure of the present invention.
[0043] Figure 11 This is a top view of part of the cover structure of the present invention.
[0044] Figure 12 This is a three-dimensional view of the front-end board of the present invention.
[0045] Figure 13 This is a perspective view of the rear sealing plate of the present invention.
[0046] Figure 14 This is a perspective view of the unfolded state of the No. 1 flip-type locking mechanism of the present invention.
[0047] Figure 15 This is a perspective view of the closed state of the No. 1 flip-type locking mechanism of the present invention.
[0048] Figure 16 This is a perspective view of the unfolded state of the No. 2 flip-type locking mechanism of the present invention.
[0049] Figure 17 This is a perspective view of the closed state of the No. 2 flip-type locking mechanism of the present invention.
[0050] Figure 18 This is a front view of the light-emitting component of the present invention.
[0051] In the diagram: 1-Cover body, 2-Inner layer plate, 3-Outer layer plate, 4-Connecting plate, 5-Left slide rail, 6-Right slide rail, 7-Left slider, 8-Right slider, 9-Opening No. 1, 10-Opening No. 2, 11-Installation channel, 12-Insertion port, 13-One-way ratchet No. 1, 14-One-way ratchet No. 2, 15-Left outer end plate, 16-Left inner end plate, 17-Male head, 18-Right outer end plate, 19-Right inner end plate, 20-Female head, 21-Front end plate, 22-Slide rail No. 1, 23 - U-shaped groove, 24- rear sealing plate, 25- second sliding groove, 26- irregular groove, 27- rectangular groove, 28- semi-circular groove, 29- first limiting component, 30- partition plate, 31- second limiting component, 32- first flip-type locking mechanism, 33- first L-shaped structural block, 34- first end, 35- second end, 36- protrusion, 37- locking hole, 38- second flip-type locking mechanism, 39- second L-shaped structural block, 40- third end, 41- fourth end. Detailed Implementation
[0052] The following will refer to the accompanying drawings in the embodiments of the present invention. Figures 1 to 18 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0053] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.
[0054] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0055] To visually verify the insulation and protection performance advantages of the multi-layer insulated space power equipment pile head warning light of the present invention, this embodiment carried out relevant performance testing tests in accordance with national standards, and compared the test results with the traditional structure silicone rubber insulating cover (power equipment pile head warning light). The specific insulation and related mechanical performance comparison data are shown in Table 1.
[0056]
[0057] The test data in the table above clearly shows that the multi-layer insulated space electrical equipment pile head warning light designed in this invention is far superior to the traditional silicone rubber insulating cover in terms of insulation resistance, mechanical strength, withstand voltage performance at various voltage levels, and tolerance to harsh environments. This fully demonstrates the effectiveness and superiority of the multi-layer insulation structure design of this invention in improving the insulation protection performance of electrical equipment pile heads, and also verifies that the product can meet the usage requirements of high voltage levels and complex working conditions such as outdoor rain.
[0058] Technical solution / principle:
[0059] This invention provides a multi-layer insulated spatial electrical equipment pile warning light that can be installed without power interruption. The main body of the insulating cover and other components are preferably made of transparent acrylic. For components requiring connection, oxidation-resistant plastic components are preferred. For example, the connecting rotating components used to rotatably connect the first L-shaped structural block 33 to the inner side of the front end plate 21 and the second L-shaped structural block 39 to the inner side of the rear sealing plate 24 are preferably made of oxidation-resistant plastic components (rotating shafts, pins, etc.). The insulating cover mainly includes a cover body 1, a left slider 7, a right slider 8, a first flip-type locking mechanism 32, a second flip-type locking mechanism 38, a first limiting component 29, and a second limiting component 31. These components work together to achieve multi-layer insulation, mechanical locking, and suspended fixing functions. The specific structure is as follows:
[0060] The enclosure 1 preferably has a cylindrical insulating structure, including an inner plate 2 and an outer plate 3 located outside the inner plate 2. The inner plate 2 and the outer plate 3 are connected by a connecting plate 4, which divides the cavity between the inner plate 2 and the outer plate 3 into a left slide rail 5 and a right slide rail 6. A left slider 7 and a right slider 8 are slidably installed in the left slide rail 5 and the right slide rail 6, respectively, forming the core structure of the interlocking self-locking closure. The two sides of the inner plate 2 form a first opening 9, and the two sides of the outer plate 3 form a second opening 10, which is located outside the first opening 9. The two form an installation channel 11, which is used to insert the head of the power equipment with cables into the inner plate 2. The left slider 7 and the right slider 8 are both provided with insertion ports 12. By inserting an insulating rod into the insertion port 12, the left slider 7 and the right slider 8 can be slid toward the installation channel 11 until they contact and interlock to close the installation channel 11, thereby achieving full enclosure protection of the enclosure 1. Specifically: the inner plate 2 is a semi-circular tube, the outer plate 3 is an open circular tube, and the two sides of the first opening 9 correspond one-to-one with the two sides of the second opening 10 to ensure the regularity of the installation channel opening 11 and facilitate the insertion of equipment heads. At the same time, the cylindrical structure can be adapted to the shape of most power equipment heads, improving the protection coverage.
[0061] Along the sliding direction of the left slider 7 and the right slider 8, a first unidirectional ratchet 13 is arranged longitudinally on the inner wall of the outer plate 3, and a second unidirectional ratchet 14 is arranged longitudinally on the left slider 7 and the right slider 8. The first unidirectional ratchet 13 and the second unidirectional ratchet 14 form an interlocking unidirectional ratchet structure. When the left slider 7 and the right slider 8 slide along the left slide rail 5 and the right slide rail 6 respectively in the preset direction (i.e., the sliding of the left slider 7 actually changes to the lower right corner position, and the sliding of the right slider 8 actually changes to the lower left corner position), the two sets of ratchets produce alternating meshing and relative sliding motion. Through the irregular contour of the unidirectional ratchet, the left slider 7 and the right slider 8 are mechanically interfered with in the opposite direction, realizing unidirectional feeding and reverse self-locking, and preventing the slider from rebounding and causing the installation channel 11 to open.
[0062] The left slider 7 includes a left outer end plate 15 and a left inner end plate 16. A gap is left between the left outer end plate 15 and the left inner end plate 16 to form a double-layer insulation structure. The tails of the left outer end plate 15 and the left inner end plate 16 are connected to each other, and their heads are connected to form a male head 17. The right slider 8 includes a right outer end plate 18 and a right inner end plate 19. The tails of the right outer end plate 18 and the right inner end plate 19 are connected. The head is designed to be open to form a female head 20. The male head 17 can be inserted into the female head 20, so that the left slider 7 and the right slider 8 press against each other to achieve mechanical interlocking. At the same time, the double-layer insulation structure further improves the insulation performance.
[0063] The upper end of the cover 1 can be covered by the front end plate 21. Along the sliding direction of the left slider 7 and the right slider 8, the front end plate 21 has two first slide grooves 22. The insertion ports 12 on the left slider 7 and the right slider 8 can be exposed through the first slide grooves 22 to facilitate the insertion of the pressure rod. From the edge of the front end plate 21 to the center, a U-shaped slot 23 is provided. The opening end of the U-shaped slot 23 is aligned with the installation channel 11 and is used to accommodate the clamping and positioning of the cable. The upper end of the cover 1 can also be covered by a rear sealing plate 24. Along the sliding direction of the left slider 7 and the right slider 8, two second sliding grooves 25 are opened on the rear sealing plate 24. The insertion ports 12 on the left slider 7 and the right slider 8 can be exposed through the second sliding grooves 25, which, together with the first sliding groove 22 of the front end plate 21, realize the stable operation of the pressure rod. From the edge of the rear sealing plate 24 to the center, an irregular groove 26 is opened. The opening end of the irregular groove 26 is consistent with the direction of the installation channel 11. The irregular groove 26 includes a rectangular groove 27 and a semi-circular groove 28 connected to the rectangular groove 27. The rectangular groove 27 is used to adapt to the clamping and positioning of power equipment heads such as plate-shaped wire clamps, and the semi-circular groove 28 is used to adapt to the clamping and positioning of cylindrical wire clamps.
[0064] A first limiting member 29 is connected to the front plate 21 and the rear sealing plate 24 at the end of the left slide rail 5. The first limiting member 29 extends into the gap between the left outer end plate 15 and the left inner end plate 16. When the male head 17 of the left slider 7 is inserted into the female head 20 of the right slider 8 and the installation channel opening 11 is closed, the first limiting member 29 presses against the tail of the left outer end plate 15 and the left inner end plate 16, limiting the excessive sliding of the left slider 7. A baffle 30 is set inside the female head 20. A second limiting member 31 is connected to the front plate 21 and the rear sealing plate 24. The second limiting member 31 is set close to the installation channel opening 11. When the left slider 7 and the right slider 8 interlock and close the installation channel opening 11, the second limiting member 31 presses against the baffle 30, limiting the excessive sliding of the right slider 8. The functions of the first limiting member 29 and the second limiting member 31 include: preventing a single slider from detaching from the slide rail and causing malfunction.
[0065] The inner side of the front end plate 21 is rotatably connected to a first flip-type locking mechanism 32. The first flip-type locking mechanism 32 includes a first L-shaped structural block 33, which is rotatably connected to the inner side of the front end plate 21 and fitted to the front end plate 21. Its rotation radius at each position is smaller than the radius of the front end plate 21 (the specific radius can be selected through size parameters), and in terms of spatial design, it does not contact the lower left slider 7 and right slider 8, allowing it to rotate freely without jamming. To completely prevent the first L-shaped structural block 33, left slider 7, and right slider 8 from touching, the left slider 7 and right slider 8 can be completely submerged within the left slide rail 5 and right slide rail 6 to ensure that neither end protrudes. Specifically: The first L-shaped structural block 33 includes a first end 34 and a second end 35, which can achieve initial state maintenance and locking in two ways: one is that the weight of the first end 34 is greater than that of the second end 35. When the U-shaped slot 23 is facing down, the second end 35 blocks the upper end of the U-shaped slot 23 under the action of gravity (using the principle of center of gravity deviation); the other is that in the initial state, the first end 34 is vertical and the second end 35 is horizontal. The protrusion 36 on the first end 34 presses against the front end plate 21 and fits tightly, which can maintain this state. When the trigger end 35 is turned counterclockwise to vertical, the protrusion 36 on the first end 34 (the protrusion 36 can be designed with an arc angle to reduce friction and facilitate the protrusion 36 to climb back onto the rear sealing plate 24 after passing over the irregular groove 26, or the front end of the protrusion 36 has an inclined surface to facilitate the protrusion 36 to climb back onto the front plate 21 after passing over the U-shaped groove 23, and the protrusion 36 is preferably a protrusion formed by bending the outer edge of the first end 34) will first slide on the inner side of the front plate 21, and finally be embedded in the locking hole 37 on the front plate 21, so as to fix the position of the first L-shaped structural block 33 and complete the mechanical locking of the U-shaped groove 23.
[0066] The inner side of the rear sealing plate 24 is rotatably connected to the second flip-type locking mechanism 38. The second flip-type locking mechanism 38 includes the second L-shaped structural block 39. The second L-shaped structural block 39 is rotatably connected to the inner side of the rear sealing plate 24 and is set to fit the rear sealing plate 24. In terms of spatial design, the second L-shaped structural block 39 does not contact the lower left slider 7 and right slider 8. When the third end 40 rotates, it does not touch the end edge of the second opening 10 and can rotate freely without jamming (specific details can be selected through size parameters). Specifically: The second L-shaped structural block 39 includes a third end 40 and a fourth end 41. The third end 40 is heavier than the fourth end 41. When the irregular slot 26 is facing downwards, the fourth end 41 is horizontally blocked within the irregular slot 26 under the action of gravity (utilizing the principle of center of gravity deviation). When the fourth end 41 is triggered to rotate counterclockwise into the housing and become vertical, at this time, the protrusion 36 on the third end 40 (the protrusion 36 is preferably designed with an arc angle to reduce...) The friction on the inner side of the back cover plate 24 facilitates the protrusion 36 to climb back onto the back cover plate 24 after passing over the irregular groove 26, or the front end of the protrusion 36 is provided with an inclined surface to facilitate the protrusion 36 to climb back onto the back cover plate 24 after passing over the irregular groove 26. The protrusion 36 is preferably a protrusion formed by bending the outer edge of the third end 40. It is embedded in the locking hole 37 on the back cover plate 24 to fix the position of the second L-shaped structural block 39 and complete the mechanical locking of the irregular groove 26.
[0067] The present invention also provides a method for installing the above-mentioned multi-layer insulated space electrical equipment pile head warning light, comprising the following steps:
[0068] Step 1): Place the left slider 7 and the right slider 8 on top of the left slide rail 5 and the right slide rail 6 respectively, so that the installation channel opening 11 is fully open;
[0069] Step 2): Connect two adjustable-spaced down-pressing rods to the insulated link bar (one method of adjustable distance: the two down-pressing rods are placed on a horizontal slide bar, which is connected to the link bar). Insert the two down-pressing rods into the insertion ports 12 at the tails of the left slider 7 and right slider 8 from the side. Lift the link bar and, with the help of the weight of the insulating cover itself, keep the left slider 7 and right slider 8 stably at the top of the left slide rail 5 and right slide rail 6. Then raise the insulating cover above the head of the power equipment with cables. This application does not impose specific restrictions on the installation tools. In actual operation, you can also hold two insulated link bars at the same time, and insert the down-pressing rods on the two link bars into the insertion ports 12 at the tails of the left slider 7 and right slider 8 respectively.
[0070] Step 3): Align the installation channel 11 with the power equipment head with cable below, align the U-shaped slot 23 of the front plate 21 with one end of the cable, and align the irregular slot 26 of the rear sealing plate 24 with the power equipment head. Slowly lower the insulating cover and gradually insert the power equipment head with cable into the inner plate 2 through the installation channel 11. As the equipment head enters, the cable and the power equipment head simultaneously or sequentially contact the second end 35 of the first L-shaped structural block 33 and the fourth end 41 of the second L-shaped structural block 39, pushing them to a vertical position. Finally, the protrusion 36 of the first end 34 and the protrusion 36 of the third end 40 are respectively embedded into the corresponding locking holes 37, realizing the mechanical locking of the first flip-type locking mechanism 32 and the second flip-type locking mechanism 38, clamping the cable and the power equipment head, and completing the initial installation of the insulating cover.
[0071] Step 4): Pull down the link bar. Under the action of the two downward pressure rods, the left slider 7 and the right slider 8 slide downward along the left slide 5 and the right slide 6 respectively in the preset direction. With the help of the interlocking one-way ratchet structure formed by the first one-way ratchet 13 and the second one-way ratchet 14, one-way feeding and reverse self-locking are realized to prevent the slider from rebounding. Step 5): When the male head 17 of the left slider 7 is inserted into the female head 20 of the right slider 8 to the limit position, the first limit member 29 presses against the tail of the left slider 7, and the second limit member 31 presses against the baffle 30. The left slider 7 and the right slider 8 interlock and completely close the installation channel 11 to form a complete cylindrical insulating protection structure.
[0072] Step 6): Move the link bar horizontally to pull the two pressure rods out of the insertion port 12 of the left slider 7 and right slider 8, remove the installation tool, and complete the entire installation process.
[0073] In this application, the pressure bar can be made of multiple connected sub-bars, which are hinged together. The maximum angle between adjacent sub-bars is limited to 180 degrees, and the rightmost sub-bar can only rotate upwards. Pulling down the link bar pulls down the two pressure bars. Since the maximum angle between adjacent sub-bars is limited to 180 degrees (the limit can be achieved through the slot), the multi-section sub-bars are taut (when the two pressure bars are inserted into the insertion port 12 at the tail of the left slider 7 and right slider 8 respectively from the side, and the link bar is lifted, the multi-section sub-bars are also taut due to the 180-degree limit between adjacent sub-bars), forming a linear shape. At this time, a downward force can be applied to operate the left slider 7 and right slider 8. After installation, lifting the link bar will cause the sub-bars to rotate upwards from left to right, causing the multi-section sub-bars to bend instead of remaining taut. This allows the pressure bar to be easily pulled out in a limited space. The structure is simple and highly practical.
[0074] Example 1: Assembly of a multi-layer insulated space electrical equipment pile head warning light structure for uninterrupted power supply installation
[0075] In this embodiment, the cover 1 is made of epoxy resin insulating material, which has high strength, anti-aging and excellent insulation performance. The inner plate 2 is a semi-circular tube and the outer plate 3 is an open circular tube. A reasonable gap is reserved between the inner plate 2 and the outer plate 3. They are connected by two symmetrically arranged connecting plates 4. The connecting plates 4 divide the cavity between the inner plate 2 and the outer plate 3 into two left slide rails 5 and right slide rails 6 with the same width. The height of the slide rails is the same as the height of the cover 1. The left slider 7 is composed of a left outer end plate 15 and a left inner end plate 16. Both the left outer end plate 15 and the left inner end plate 16 are made of epoxy resin material. A gap is reserved between the two to form a double-layer insulation structure. The tail is fixedly connected by a connecting plate. The head is integrally formed to form a male head 17. The male head 17 has a wedge-shaped structure and its thickness is consistent with the total thickness of the double-layer structure of the left slider 7. The right slider 8 is composed of a right outer end plate 18 and a right inner end plate 19. The structure corresponds to that of the left slider 7. The head is open to form a female head 20. The wedge-shaped structure of the male head 17 is adapted to the inside of the female head 20, and a baffle plate 30 is provided inside the female head 20.
[0076] The inner wall of the outer plate 3 is provided with a first unidirectional ratchet 13 along the longitudinal direction (slide length direction). A second unidirectional ratchet 14 is provided at the corresponding position on the outer side of the left slider 7 and right slider 8, meshing with the first unidirectional ratchet 13 to form an interlocking unidirectional ratchet structure, ensuring that the slider can only slide in one direction and cannot rebound in the opposite direction. Both the front plate 21 and the rear sealing plate 24 are circular structures with a diameter consistent with the outer diameter of the outer plate 3, and are detachably connected to the cover 1. The first slide groove 22 on the front plate 21 is arc-shaped and exposes the insertion inlets 12 of the left slider 7 and right slider 8; the opening end of the U-shaped slot 23 is aligned with the direction of the installation channel 11, adapting to cable sizes. The structure of the second slide groove 25 on the rear sealing plate 24 is consistent with the first slide groove 22; the rectangular slot 27 of the irregular slot 26 connects to the semi-circular slot 28, with the rectangular slot 27 adapting to plate-shaped wiring clamps and the semi-circular slot 28 adapting to snap-fit cylindrical wiring clamps.
[0077] Both the first limiting component 29 and the second limiting component 31 are made of insulating material. The first limiting component 29 is connected to the inner side of the front end plate 21 and the rear end plate 24, corresponding to the end of the left slide rail 5, and extends into the gap of the double-layer structure of the left slide block 7. The second limiting component 31 is connected to the inner side of the front end plate 21 and the rear end plate 24, near the installation channel opening 11, corresponding to the position of the inner baffle 30 of the female head 20. Both the first L-shaped structural block 33 and the second L-shaped structural block 39 are made of insulating material. The first end 34 of the first L-shaped structural block 33 is heavier than the second end 35. It is rotatably connected to the inner side of the front end plate 21 through a rotating shaft. The position of the rotating shaft is reasonably set to meet the rotation requirements. The locking hole 37 on the front end plate 21 is opened corresponding to the protrusion 36 on the first end 34. The protrusion 36 is adapted to the locking hole 37. The second L-shaped structural block 39 is rotatably connected to the inner side of the rear sealing plate 24 via a rotating shaft, ensuring that it does not touch the end edge of the second opening 10 when rotating. The locking hole 37 on the rear sealing plate 24 is opened corresponding to the protrusion 36 on the third end 40, and the protrusion 36 is adapted to the locking hole 37.
[0078] Example 2: Installation process of warning lights for multi-layer insulated space electrical equipment piles in a non-power-off installation environment
[0079] This embodiment describes the installation of insulating covers for 10kV line incoming and outgoing line clamps (power equipment heads with cables). The specific steps are as follows:
[0080] Step 1: Ensure that the left slider 7 is slid to the top of the slide. At this time, the installation channel 11 is fully open, and the opening width is consistent with the opening of the inner layer plate 2 and the outer layer plate 3.
[0081] Step 2: Select an insulated link bar. Attach two adjustable-pitch downward pressure rods to the top of the link bar. In the initial position, the pitch of the downward pressure rods matches the pitch of the insertion ports 12 of the left slider 7 and right slider 8, and the size of the downward pressure rods matches the insertion ports 12. Insert the two downward pressure rods into the insertion ports 12 at the tails of the left slider 7 and right slider 8 from the sides. Lift the link bar; with the help of the weight of the insulating cover, the left slider 7 and right slider 8 will remain stably held at the top of the slide rail without any downward tendency. Then, raise the insulating cover to a suitable position above the wire clamp.
[0082] Step 3: Adjust the linker angle so that the installation channel 11 is aligned with the lower cable clamp, the U-shaped slot 23 of the front plate 21 is aligned with the cable, and the irregular slot 26 of the rear cover plate 24 is aligned with the cable clamp body. Slowly lower the linker so that the cable clamp and cable gradually enter the inner plate 2 through the installation channel 11. When the cable contacts the second end 35 of the first L-shaped structural block 33 and the clamp body contacts the fourth end 41 of the second L-shaped structural block 39, the protective cover continues to descend. The cable and the clamp push the second end 35 and the fourth end 41 respectively, causing them to rotate counterclockwise. When the clamp is fully inside the protective cover, the second end 35 and the fourth end 41 are both pushed to a vertical position. At this time, the protrusion 36 of the first end 34 is inserted into the locking hole 37 of the front plate 21, and the protrusion 36 of the third end 40 is inserted into the locking hole 37 of the rear sealing plate 24. The first flip-type locking mechanism 32 and the second flip-type locking mechanism 38 complete the locking, clamping the cable and the clamp. The protective cover is initially fixed and no longer shakes.
[0083] Step 4: Slowly pull down the link bar. The down lever drives the left slider 7 and right slider 8 to slide down along the left slide rail 5 and right slide rail 6. During the sliding process, the first one-way ratchet 13 of the outer plate 3 and the second one-way ratchet 14 of the slider alternately mesh and slide over each other. The slider can only be fed downward and cannot rebound in the opposite direction. Control the sliding speed to avoid structural collision.
[0084] Step 5: When the male head 17 of the left slider 7 is fully inserted into the female head 20 of the right slider 8 and reaches the limit position, the first limiting member 29 presses against the tail connecting plate of the left slider 7, and the second limiting member 31 presses against the baffle 30 inside the female head 20. The slider stops sliding. At this time, the installation channel 11 is completely closed, and the protective cover forms a complete cylindrical insulation structure. The wire clamp and cable (mainly the cable connector) are enclosed inside the protective cover. The protective cover cooperates with the wire clamp and cable through the U-shaped slot 23 and the irregular slot 26, and is suspended and fixed, without directly contacting the surface of the wire clamp, ensuring sufficient air insulation distance.
[0085] Step 6: Move the link bar horizontally to one side to pull the two pressure rods out of the insertion port 12 of the left slider 7 and right slider 8. Slowly remove the link bar to complete the installation. The whole process does not require power outages and is highly efficient. After installation, the cover does not swing significantly under normal wind conditions and is firmly fixed.
[0086] Example 3: Performance Testing and Verification
[0087] The performance of the warning lights for the multi-layer insulated space electrical equipment pile heads after installation according to the above embodiments was tested, and the test results are as follows:
[0088] 1. Insulation performance test: Under a power frequency voltage of 10kV and high humidity environment, there is no creepage or discharge phenomenon on the surface of the cover, and the insulation resistance value meets the industry standard requirements; after foreign objects such as tree branches and dust adhere to the surface, the insulation resistance value can still remain stable, and the insulation performance is not significantly affected.
[0089] 2. Fixing performance test: Under medium and high wind conditions, the protective cover did not slide or fall off, and the swing amplitude was minimal; after multiple wind force simulation impacts, the mechanical locking structure did not loosen, the No. 1 one-way ratchet 13 and the No. 2 one-way ratchet 14 meshed normally, and the No. 1 limit part 29 and the No. 2 limit part 31 showed no deformation, indicating excellent fixing reliability.
[0090] 3. Aging performance test: After artificial accelerated aging test (long-term ultraviolet irradiation and multiple high and low temperature cycles), the protective cover showed no cracks or deformation, and the mechanical strength decreased slightly. The No. 1 flip-type locking mechanism 32 and the No. 2 flip-type locking mechanism 38 can still work normally, meeting the requirements for long-term outdoor service life.
[0091] Finally, it should be noted that the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.
Claims
1. A multi-layer insulated spatial electrical equipment pile head warning light that can be installed without power interruption, characterized in that: The enclosure (1) includes an insulating cover (1), which includes an inner layer plate (2) and an outer layer plate (3) located outside the inner layer plate (2). The inner layer plate (2) and the outer layer plate (3) are connected by a connecting plate (4), and the connecting plate (4) divides the cavity between the inner layer plate (2) and the outer layer plate (3) into a left slide rail (5) and a right slide rail (6). A left slider (7) and a right slider (8) are slidably provided in the left slide rail (5) and the right slide rail (6), respectively. An opening (9) is formed on both sides of the inner layer plate (2), and the two sides of the outer layer plate (3) are... A second opening (10) is formed outside the first opening (9), and an installation channel (11) is formed between the first opening (9) and the second opening (10). Through the installation channel (11), the head of the power equipment with cable can be inserted into the inner layer plate (2). The left slider (7) and the right slider (8) are provided with insertion ports (12). By inserting the insulating rod into the insertion port (12), the left slider (7) and the right slider (8) can be operated to slide towards the installation channel (11) until the two contact and interlock to close the installation channel (11). Along the sliding direction of the left slider (7) and right slider (8), a first unidirectional ratchet (13) is arranged longitudinally on the inner wall of the outer plate (3); a second unidirectional ratchet (14) is arranged longitudinally on the left slider (7) and right slider (8), and an interlocking unidirectional ratchet structure is formed between the first unidirectional ratchet (13) and the second unidirectional ratchet (14); when the left slider (7) and right slider (8) slide along the left slide (5) and right slide (6) respectively in the preset direction, the two sets of ratchets generate alternating meshing and relative sliding motion. Through the restriction of the irregular contour of the unidirectional ratchet, the left slider (7) and right slider (8) are subjected to mechanical interference in the opposite direction, thereby realizing unidirectional feeding and reverse self-locking.
2. The multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 1, characterized in that: The inner plate (2) is a semi-circular tube, and the outer plate (3) is an open circular tube. The two sides of the first opening (9) correspond one-to-one with the two sides of the second opening (10).
3. The multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 1, characterized in that: The left slider (7) includes a left outer end plate (15) and a left inner end plate (16). A gap is left between the left outer end plate (15) and the left inner end plate (16) to form a double-layer insulation structure. The tails of the left outer end plate (15) and the left inner end plate (16) are connected accordingly, and the heads of the left outer end plate (15) and the left inner end plate (16) are connected to form a male head (17). The right slider (8) includes a right outer end plate (18) and a right inner end plate (19). The tails of the right outer end plate (18) and the right inner end plate (19) are connected. The heads of the right outer end plate (18) and the right inner end plate (19) are open to form a female head (20). The male head (17) can be inserted into the female head (20) to realize that the left slider (7) and the right slider (8) abut against each other for interlocking.
4. The multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 3, characterized in that: The upper end of the cover (1) is provided with a front end plate (21) that can be closed. Along the sliding direction of the left slider (7) and the right slider (8), two first grooves (22) are opened on the front end plate (21). The insertion ports (12) on the left slider (7) and the right slider (8) can be exposed through the first grooves (22). From the edge of the front end plate (21) to the center of the front end plate (21), a U-shaped groove (23) is opened on the front end plate (21). The opening end of the U-shaped groove (23) is in the same direction as the installation channel (11). The front end plate (21) is a transparent and light-transmitting plate. A transparent shell is connected to the inner side of the front end plate (21). A light-emitting component is embedded in the transparent shell. The light-emitting component includes a solar panel. Several LED beads are installed in the shell around the solar panel. A photosensitive sensor is also provided in the transparent shell. The LED beads, the photosensitive sensor, and the solar panel are electrically connected. When the outdoor light dims, the LED beads emit light under the trigger of the photosensitive sensor.
5. A multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 4, characterized in that: The upper end of the cover (1) is provided with a rear sealing plate (24) that can be closed. Along the sliding direction of the left slider (7) and the right slider (8), two second sliding grooves (25) are opened on the rear sealing plate (24). The insertion ports (12) on the left slider (7) and the right slider (8) can be exposed through the second sliding grooves (25). From the edge of the rear sealing plate (24) to the center of the rear sealing plate (24), a special-shaped slot (26) is opened on the rear sealing plate (24). The opening end of the special-shaped slot (26) is in the same direction as the installation channel (11). The special-shaped slot (26) includes a rectangular slot (27) and a semi-circular slot (28) that communicates with the rectangular slot (27).
6. A multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 5, characterized in that: A limiting member (29) is connected to the end of the left slide rail (5) on the front end plate (21) and the rear end plate (24). The limiting member (29) extends into the gap between the left outer end plate (15) and the left inner end plate (16). When the male head (17) on the left slide rail (7) is inserted into the female head (20) on the right slide rail (8) to close the installation channel opening (11), the limiting member (29) can press against the left outer end plate (15) and the left inner end plate. (16) The tail end; the female head (20) is provided with a baffle (30), and the front end plate (21) and the rear sealing plate (24) are connected with a second limiting member (31). The second limiting member (31) is set near the installation channel opening (11). When the male head (17) on the left slider (7) is inserted into the female head (20) on the right slider (8) to close the installation channel opening (11), the second limiting member (31) can hold the baffle (30).
7. A multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 4 or 6, characterized in that: A first-order flip-type locking mechanism (32) is rotatably connected to the inner side of the front end plate (21). The first-order flip-type locking mechanism (32) includes a first-order L-shaped structural block (33), which is rotatably connected to the inner side of the front end plate (21). The first-order L-shaped structural block (33) includes a first end (34) and a second end (35). The weight of the first end (34) is greater than the weight of the second end (35). When the U-shaped slot... (23) When facing downwards, the weight of the first end (34) causes the second end (35) to block the upper end of the U-shaped slot (23); the front end plate (21) is provided with a locking hole (37), and the first end (34) has a protruding part (36). When the second end (35) is triggered to turn counterclockwise to vertical, the protruding part (36) on the first end (34) is embedded in the locking hole (37) to fix the position of the first L-shaped structural block (33).
8. A multi-layer insulated space electrical equipment pile head warning light with uninterrupted power installation according to claim 5, characterized in that: A second flip-type locking mechanism (38) is rotatably connected to the inner side of the rear sealing plate (24). The second flip-type locking mechanism (38) includes a second L-shaped structural block (39), which is rotatably connected to the inner side of the rear sealing plate (24). The second L-shaped structural block (39) includes a third end (40) and a fourth end (41). The weight of the third end (40) is greater than the weight of the fourth end (41). When the irregular groove When the opening (26) is facing down, the weight of the third end (40) causes the fourth end (41) to be blocked in the irregular groove (26); the rear sealing plate (24) is provided with a locking hole (37), and the third end (40) has a protruding part (36). When the fourth end (41) is triggered to turn counterclockwise to vertical, the protruding part (36) on the third end (40) is embedded in the locking hole (37) to fix the position of the second L-shaped structural block (39).
9. A method for installing a warning light for a multi-layer insulated space electrical equipment pile head that can be installed without power interruption, characterized in that, The method includes the following steps: Step 1): Place the left slider (7) and right slider (8) at the top of the left slide (5) and right slide (6) respectively to ensure that the installation channel opening (11) is fully open; Step 2): Connect two adjustable pressure rods to the insulating link bar. Insert the two pressure rods into the insertion ports (12) at the tails of the left slider (7) and right slider (8) from the side. Lift the link bar. Under the weight of the insulating cover itself, the left slider (7) and right slider (8) will be stably held at the top of the left slide (5) and right slide (6). Then lift the insulating cover above the head of the power equipment with cables. Step 3): Align the installation channel (11) with the power equipment head with cable below, with the U-shaped slot (23) on the front end plate (21) aligned with one end of the cable, and the irregular slot (26) on the rear end plate (24) aligned with the power equipment head; lower the insulating cover, and gradually insert the power equipment head with cable into the installation channel (11) through the installation channel (11). As the power equipment head with cable enters the installation channel (11), the cable and the power equipment head will simultaneously or sequentially contact the second end (35) on the first L-shaped structural block (33) and the fourth end (41) on the second L-shaped structural block (39), and finally the second end (41) on the first L-shaped structural block (33) will be connected. When the No. 1 end (35) and the No. 4 end (41) on the No. 2 L-shaped structural block (39) are pushed to the vertical position, the No. 2 end (35) on the No. 1 L-shaped structural block (33) is pushed to the vertical position, the protrusion (36) on the No. 1 end (34) is inserted into the locking hole (37) to fix the position of the No. 1 L-shaped structural block (33); when the No. 4 end (41) on the No. 2 L-shaped structural block (39) is pushed to the vertical position, the protrusion (36) on the No. 3 end (40) is inserted into the locking hole (37) to fix the position of the No. 2 L-shaped structural block (39). The cable and the head of the power equipment are clamped by the No. 1 L-shaped structural block (33) and the No. 2 L-shaped structure locking, and the initial installation of the insulation cover is achieved. Step 4): Pull down the link bar again. Under the action of the two down levers, the left slider (7) and the right slider (8) slide down along the left slide (5) and the right slide (6) respectively in the preset direction. Since the first unidirectional ratchet (13) and the second unidirectional ratchet (14) form an interlocking unidirectional ratchet structure, the two sets of ratchets will alternately mesh and slide relative to each other. Through the restriction of the irregular contour of the unidirectional ratchet, the left slider (7) and the right slider (8) are mechanically interfered in the opposite direction, thereby realizing unidirectional feeding and reverse self-locking. Step 5): When the male head (17) on the left slider (7) is inserted into the female head (20) on the right slider (8) to the limit position, the first limiting member (29) can hold the tail of the left outer end plate (15) and the left inner end plate (16), and the second limiting member (31) can hold the baffle plate (30), so that the left slider (7) and the right slider (8) with double insulation structure interlock and close the installation channel opening (11). Step 6): Move the link bar horizontally to pull the two pressure rods out of the insertion port (12) at the tail of the left slider (7) and right slider (8), and then remove them to complete the installation.