Stable installation anti-ultraviolet aging polyethylene protection device

Abstract

The utility model relates to cable protection device field discloses an installation stable anti ultraviolet ageing polyethylene protection device, including the shell, the left and right two ends of shell all are fixedly installed with the fixed ring, the left and right two ends of fixed ring all are provided with installation component, the inside of shell is provided with the composite laminated, installation component includes the mounting seat, the left end of fixed ring is provided with the thread groove, the inner wall of mounting seat is fixedly connected with the mounting ring, the inner wall right surface of mounting ring is provided with multiple groups of magnetic attraction hole, the magnetic attraction hole is connected with the pad through the magnetic column magnetic attraction, in the utility model, through the mutual cooperation of the connecting relationship between mounting seat, thread groove, magnetic column and other spare parts in the equipment, realize magnetic attraction quick -release combination and the axial positioning of no tool, the radial clamping of rubber clamp jaw elastic self -adaptation, and the installation time is shortened compared with traditional bolt scheme, and the easily damaged rubber clamp jaw can be replaced singly, and maintenance zero downtime.

Description

Technical Field

[0001] This utility model relates to the field of cable protection devices, and in particular to a stable, UV-resistant, and aging-resistant polyethylene protection device. Background Technology

[0002] In modern industry, construction, agriculture, and daily life, polyethylene (PE) is widely used in the manufacture of various protective devices due to its lightweight, corrosion resistance, and relatively low cost. These include pipe protective sleeves, outdoor equipment protective covers, outer protective layers for agricultural greenhouse frames, and building exterior wall panels. These protective devices are frequently exposed to the outdoor environment and subjected to prolonged exposure to ultraviolet (UV) radiation from sunlight. However, ordinary polyethylene is prone to photo-oxidative degradation under UV light, leading to a decline in its mechanical properties and aging phenomena such as surface cracking, discoloration, and powdering. This severely affects the structural stability, protective function, and service life of the protective devices.

[0003] The above-mentioned devices have the following defects: traditional products mostly use metal clamps or bolts for fastening, which are time-consuming to assemble and disassemble when working at heights or in narrow spaces, and are difficult to disassemble after the bolts are corroded. Due to the difference in material polarity and thermal expansion mismatch, the multi-layer composite structure will delaminate and bulge under the influence of day and night temperature differences. Therefore, a stable installation anti-ultraviolet aging resistant polyethylene protective device is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a stable and UV-resistant aging-resistant polyethylene protective device, which aims to improve the problems of cumbersome installation, low structural strength, and difficult maintenance in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a stable, UV-resistant, and aging-resistant polyethylene protective device, comprising a housing, with fixing rings fixedly installed at both ends of the housing, and mounting components provided at both ends of the fixing rings. The housing contains a composite layer, and the mounting components include a mounting base. A threaded groove is provided at the left end of the fixing ring, and a mounting ring is fixedly connected to the inner wall of the mounting base. Multiple sets of magnetic suction holes are provided on the right surface of the inner wall of the mounting ring, and a pad is magnetically connected to the magnetic suction holes via magnetic pillars. Rubber grippers are fixedly connected to the inner wall of the pad.

[0006] As a further description of the above technical solution: the composite layer includes an environmental adaptation layer, the inner wall of the environmental adaptation layer is provided with an anti-ultraviolet aging layer, the inner wall of the anti-ultraviolet aging layer is provided with a transition buffer layer, and the inner wall of the transition buffer layer is provided with a structural reinforcement layer.

[0007] As a further description of the above technical solution: multiple sets of magnetic pillars are fixedly connected to the left surface of the pad.

[0008] As a further description of the above technical solution: the left surface of the rubber gripper is connected through the inner wall of the mounting ring.

[0009] As a further description of the above technical solution: the outer wall of the housing is provided with multiple sets of strip-shaped bars, and the strip-shaped bars of the housing are evenly distributed in a circular array on the outer wall of the housing with the center of the housing as the reference point.

[0010] As a further description of the above technical solution: the environmental adaptation layer is hot-pressed and fused at the edge to form a seamless "Ω" shaped buckle that can be directly embedded into the mounting groove.

[0011] As a further description of the above technical solution: the outer wall of the environmental adaptation layer is fixedly installed on the inner wall of the housing.

[0012] As a further description of the above technical solution: the mounting base is detachably connected to the left end of the fixing ring via a threaded groove.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by utilizing the mutual cooperation between the mounting base, threaded groove, magnetic column and other components in the equipment, magnetic quick-release assembly and tool-free axial positioning are achieved. The rubber claws elastically and adaptively clamp radially, shortening the installation time compared to the traditional bolt solution. Furthermore, the easily damaged rubber claws can be replaced individually, ensuring zero downtime for maintenance.

[0015] 2. In this utility model, the environmental adaptation layer, the UV-resistant and aging-resistant layer, the transition buffer layer and other components in the equipment cooperate with each other through the connection relationship to achieve overall blocking of water vapor and salt spray; in conjunction with the nano and carbon black system, the service life of the equipment is improved, the compressive strength of the equipment is enhanced, and zero collapse is achieved under negative pressure impact. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of a stable, UV-resistant, and aging-resistant polyethylene protective device proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of an explosion of a local part of the main body of a stable, UV-resistant, and aging-resistant polyethylene protective device proposed in this utility model.

[0018] Figure 3 This is a partial rear view of the mounting base of a stable, UV-resistant, and aging-resistant polyethylene protective device proposed in this utility model.

[0019] Figure 4This is a partial cross-sectional view of the composite layer of a stable, UV-resistant, and aging-resistant polyethylene protective device proposed in this utility model.

[0020] Legend:

[0021] 1. Housing; 2. Retaining ring; 21. Threaded groove; 3. Mounting assembly; 31. Mounting base; 32. Mounting ring; 321. Magnetic suction hole; 33. Rubber claw; 34. Pad; 35. Magnetic post; 4. Composite layer; 41. Environmentally adaptable layer; 42. UV resistant and aging resistant layer; 43. Transition buffer layer; 44. Structural reinforcement layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 - Figure 2 This utility model provides an embodiment of a stable, UV-resistant, and aging-resistant polyethylene protective device, comprising a housing 1. The housing 1 serves as the main outer shell of the device, directly bearing external mechanical impacts and environmental erosion. Circular array strips on its outer wall increase the heat dissipation area, reduce weight, and provide an anti-slip grip surface during installation. Multiple sets of strips are provided on the outer wall of the housing 1. The strips are evenly distributed in a circular array on the outer wall of the housing 1, with the center of the housing 1 as the reference point. The strips form a reinforcing rib structure, improving the circumferential rigidity of the housing 1, while providing a flow channel for external airflow, reducing wind resistance and dust accumulation. Fixing rings 2 are fixedly installed at both ends of the housing 1. The fixing rings 2 provide axial positioning for the device, and their end faces are machined with threaded grooves 21 for quick and detachable connection to the installation components 3. Installation components 3 are provided at both ends of the fixing rings 2. A composite layer 4 is provided inside the housing 1.

[0024] Reference Figure 2 - Figure 4The mounting component 3 includes a mounting base 31, which is a metal or high-strength plastic ring with external threads. One end is screwed into a threaded groove 21, and the other end is embedded with a mounting ring 32, serving as a rigid support frame for the entire mounting component 3. The mounting base 31 is detachably connected to the left end of the fixing ring 2 via the threaded groove 21. The threaded groove 21 is configured as an internal thread structure, which mates with the external thread of the mounting base 31 to achieve a high-strength threaded lock between the mounting component 3 and the fixing ring 2, while also facilitating maintenance and replacement. The left end of the fixing ring 2 has a threaded groove 21, and the mounting ring 32 is fixedly connected to the inner wall of the mounting base 31. The mounting ring 32 is configured as a thin-walled circular ring with a magnetic suction hole 321 on its inner surface for precise positioning and magnetic connection of the pad 34, while also restricting the rubber clamp. The axial displacement of the claw 33 ensures uniform clamping force. Multiple sets of magnetic suction holes 321 are formed on the right surface of the inner wall of the mounting ring 32. These holes are evenly distributed within the countersunk holes on the right surface of the inner wall of the mounting ring 32, each containing a permanent magnet or a magnetic sleeve. These holes form a quick magnetic pairing with the magnetic pillars 35, enabling tool-free assembly and disassembly. The magnetic suction holes 321 are magnetically connected to a pad 34 via the magnetic pillars 35. The pad 34 is a disc-shaped carrier, with one side fixing the magnetic pillars 35 and the other side containing vulcanized rubber claws 33, achieving a modular "magnetic attraction-elasticity" combination. This facilitates the individual replacement of easily damaged rubber claws 33. Multiple sets of magnetic pillars 35 are fixedly connected to the left surface of the pad 34. Each magnetic pillar 35 is a cylindrical permanent magnet, corresponding one-to-one with the magnetic suction holes 321, providing an axial attraction force ≥30. N ensures that the pad 34 is quickly positioned and prevented from detaching on the mounting ring 32. The inner wall of the pad 34 is fixedly connected with a rubber claw 33. The rubber claw 33 is a multi-lobed elastomer with anti-slip ripples on the inner side. It can directly grip the outer wall of the protected part. Its elastic deformation can absorb vibration and thermal expansion and contraction differences, and prevent stress concentration. The left surface of the rubber claw 33 is connected through the inner wall of the mounting ring 32.

[0025] Reference Figure 2 - Figure 4The composite laminate 4 includes an environmental adaptability layer 41. The composite laminate 4 is a functional film sleeve formed by four-layer co-extrusion or hot-pressing, directly adhering to the inner wall of the housing 1. It provides all-around protection against UV rays, aging, impact, and structural reinforcement for the protected components. The outer wall of the environmental adaptability layer 41 is fixedly installed on the inner wall of the housing 1. The environmental adaptability layer 41 is located as the outermost layer of the composite laminate 4 and is adhesively or hot-melt bonded to the inner wall of the housing 1. An "Ω"-shaped snap fastener at the edge is embedded in the corresponding groove of the housing 1, achieving a quick snap-fit ​​seal without screws or glue, while simultaneously blocking moisture and chemical corrosive media. The environmental adaptability layer 41 is hot-pressed and fused at the edge to form a seamless "Ω"-shaped snap fastener. The function of the "Ω"-shaped snap fastener is that the elastic hook-like structure formed by hot pressing at the edge of the environmental adaptability layer 41 provides 360° continuous clamping force, preventing the composite laminate 4 from axially slipping within the housing 1. The device can be rotated and directly embedded into the mounting slot. The inner wall of the environmental adaptability layer 41 is provided with an anti-ultraviolet aging layer 42. The anti-ultraviolet aging layer 42 is located inside the environmental adaptability layer 41 and contains a composite system of nano-TiO2, HALS and carbon black. It absorbs / reflects ultraviolet rays and captures free radicals, increasing the outdoor service life of the composite stack 4 to ≥15 years. The inner wall of the anti-ultraviolet aging layer 42 is provided with a transition buffer layer 43. The transition buffer layer 43 is made of maleic anhydride-grafted PE elastomer and is located between the anti-ultraviolet aging layer 42 and the structural reinforcement layer 44. It alleviates the interlaminar shear stress caused by the difference in thermal expansion coefficient between the two and prevents delamination cracking. The inner wall of the transition buffer layer 43 is provided with a structural reinforcement layer 44. The structural reinforcement layer 44 is located in the innermost layer of the composite stack 4 and is co-extruded from HDPE matrix and glass fiber mesh. It provides a circumferential tensile strength of ≥50 MPa to ensure that the device does not collapse or deform under negative pressure or impact load.

[0026] Working principle:

[0027] The pre-positioning housing 1 serves as the rigid framework of the device. The strip-shaped guides arranged in a circular array on the outer wall act as reinforcing ribs and anti-slip grip surfaces. Construction personnel can place the housing around the protected component by hand or with the aid of simple tools. The strip-shaped guides also form airflow channels, reducing wind resistance and dust accumulation, preventing slippage due to sand and dust buildup during installation. The fixing rings 2 welded to the left and right ends of the housing 1 provide an axial reference for the device. The internal threaded grooves 21 machined on the end faces of the fixing rings 2 engage with the external threads of the mounting base 31 of the mounting assembly 3, achieving the first level of mechanical locking. This allows for repeated disassembly and assembly without damaging the threads. After the mounting base 31 is tightened, its embedded mounting ring 32 becomes a rigid support framework. The magnetic suction holes 321 evenly distributed on the right surface of the inner wall of the mounting ring 32 embed permanent magnets or magnetic sleeves.

[0028] The pad 34 is magnetically attracted by the magnetic pillars 35 fixed on its left surface, which correspond one-to-one with the magnetic holes 321, forming an axial attraction force of ≥30 N, achieving tool-free rapid positioning. At the same time, the cylindrical-counter-hole fit between the magnetic pillars 35 and the magnetic holes 321 restricts the degree of rotational freedom, preventing the pad 34 from loosening. The inner wall of the pad 34 is vulcanized with rubber claws 33, whose multi-lobed elastomer structure has anti-slip corrugations on the inner side, which can directly wrap tightly around the outer wall of the protected part. The elastic deformation of the rubber claws 33 can absorb radial and axial vibrations caused by equipment operation or wind force, as well as differences in thermal expansion and contraction, avoiding stress concentration transmission to the housing 1. The composite layer 4 inside the housing 1 is formed into an integral functional film sleeve by four-layer co-extrusion or hot-pressing. Its outermost layer is an environmentally adaptable layer 41, which is bonded to the inner wall of the housing 1 by adhesive or hot-melt bonding. The edges are hot-pressed to form a seamless "Ω" shaped buckle, which is embedded into the corresponding groove of the housing 1 to achieve 360° continuous clamping and sealing, preventing water vapor, salt spray and chemical corrosive media from entering the interior.

[0029] The UV-resistant and aging-resistant layer 42 inside the environmental adaptability layer 41 contains a composite system of nano-TiO2, HALS light stabilizer, and carbon black: nano-TiO2 reflects / scatters ultraviolet rays, reducing ultraviolet transmittance; HALS captures free radicals, blocking photo-oxidation chain reactions; and carbon black assists in absorbing remaining ultraviolet energy. These three components work synergistically to extend the outdoor service life of the composite laminate 4 to ≥15 years. ASTM G154 0.89 W / m²@340 nm, 102 min light exposure / 18 min spray cycle, tensile strength retention rate ≥85% after 5000 h. The transition buffer layer 43 inside the UV-resistant and aging-resistant layer 42 uses maleic anhydride-grafted PE elastomer, with an elastic modulus between that of the outer and inner layers. It can absorb interlaminar shear stress caused by diurnal temperature differences, preventing delamination and cracking. The structural reinforcement layer 44 inside the transition buffer layer 43 is co-extruded from HDPE matrix and glass fiber mesh, with a circumferential tensile strength ≥50 MPa, ensuring that the device does not collapse or deform under negative pressure, impact or external impact. The glass fiber mesh also provides puncture resistance to prevent accidental scratches from on-site installation tools.

[0030] To replace the rubber gripper 33, simply pull out the pad 34 along with the magnetic post 35 to quickly remove and replace the rubber gripper 33; there is no need to unscrew the mounting base 31. Due to its "Ω"-shaped snap-fit ​​design, the composite stack 4 can also be pulled out and replaced as a whole, enabling modular maintenance of both the device body and the vulnerable functional layers.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stable, UV-resistant, and aging-resistant polyethylene protective device, comprising a housing (1), characterized in that: The housing (1) is fixedly installed with a fixing ring (2) at both the left and right ends. The fixing ring (2) is provided with an installation component (3) at both the left and right ends. The housing (1) is provided with a composite layer (4). The installation component (3) includes a mounting base (31). The left end of the fixing ring (2) is provided with a threaded groove (21). The inner wall of the mounting base (31) is fixedly connected with a mounting ring (32). The right surface of the inner wall of the mounting ring (32) is provided with multiple sets of magnetic suction holes (321). The magnetic suction holes (321) are magnetically connected to a pad (34) through a magnetic column (35). The inner wall of the pad (34) is fixedly connected with a rubber claw (33).

2. The UV-resistant and aging-resistant polyethylene protective device according to claim 1, characterized in that: The composite stack (4) includes an environmental adaptation layer (41), the inner wall of which is provided with an anti-ultraviolet aging layer (42), the inner wall of which is provided with a transition buffer layer (43), and the inner wall of which is provided with a structural reinforcement layer (44).

3. The UV-resistant and aging-resistant polyethylene protective device according to claim 1, characterized in that: Multiple sets of magnetic posts (35) are fixedly connected to the left surface of the pad (34).

4. The UV-resistant and aging-resistant polyethylene protective device according to claim 1, characterized in that: The left surface of the rubber gripper (33) is connected through the inner wall of the mounting ring (32).

5. The UV-resistant and aging-resistant polyethylene protective device according to claim 1, characterized in that: The outer wall of the housing (1) is provided with multiple sets of strip-shaped bars. The strip-shaped bars of the housing (1) are evenly distributed in a circular array on the outer wall of the housing (1) with the center of the housing (1) as the reference point.

6. The UV-resistant and aging-resistant polyethylene protective device according to claim 2, characterized in that: The environmental adaptation layer (41) is hot-pressed and fused at the edge to form a seamless "Ω" shaped buckle that can be directly embedded into the mounting groove.

7. A stable, UV-resistant, and aging-resistant polyethylene protective device according to claim 2, characterized in that: The outer wall of the environmental adaptation layer (41) is fixedly installed on the inner wall of the housing (1).

8. The UV-resistant and aging-resistant polyethylene protective device according to claim 1, characterized in that: The mounting base (31) is detachably connected to the left end of the retaining ring (2) via a threaded groove (21).

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