Composite protective sleeve for outdoor steel pipes

Abstract

The utility model discloses a kind of composite protective sleeve for outdoor steel pipe, it includes outer shell, inner layer bushing, buffer layer and fastening assembly. Outer shell uses weather-resistant engineering plastics, surface is equipped with corrugated protrusion;Inner layer bushing is made of flexible rubber, and there is annular groove in inner surface;Buffer layer is porous foam material, with through pore;Fastening assembly contains clamp, lock catch and non-slip gasket, positioning slot is equipped in the inside of clamp, lock catch has serrated occlusal structure. Outer shell both ends are also equipped with sealing ring, inside with progressive compression flange. The application improves impact resistance, drainage and sealing performance through multiple structure design, convenient to install, high stability, significantly prolong the service life of steel pipe, suitable for large-scale promotion.

Description

Technical Field

[0001] This utility model relates to the field of building material protection technology, and in particular to a composite protective sleeve for outdoor steel pipes. Background Technology

[0002] Currently, in outdoor steel pipe applications, especially in construction, power facilities, and communication engineering, steel pipes are exposed to the natural environment for extended periods, making them susceptible to erosion from rainwater, ultraviolet radiation, and corrosive substances, significantly shortening their lifespan. To extend the durability of steel pipes, anti-corrosion coatings are typically applied to their surfaces, or simple protective sleeves are added. However, existing protective measures are mostly single-material structures, which have limitations in terms of wear resistance, aging resistance, and sealing performance. For example, while ordinary plastic protective sleeves offer some waterproofing, they are prone to aging and cracking under extreme temperature conditions, while metal sleeves may increase installation difficulty due to their weight. Furthermore, the installation of existing protective sleeves usually requires tools for fixation, which is complex and inefficient, making it difficult to meet the needs of large-scale construction. Therefore, there is an urgent need for a protective sleeve that combines multiple functions and convenient installation to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide a composite protective sleeve for outdoor steel pipes, which solves the problems mentioned in the background art.

[0004] This utility model is implemented as follows: a composite protective sleeve for outdoor steel pipes. The composite protective sleeve mainly consists of an outer shell, an inner bushing, and a buffer layer disposed between the outer shell and the inner bushing. The outer shell is the main structure, and the inner bushing and the buffer layer are both installed inside the outer shell and fixed to the surface of the steel pipe by fastening components.

[0005] A further technical solution of this utility model is: the outer shell is made of weather-resistant engineering plastic, and its outer surface is provided with corrugated protrusions, which are evenly distributed along the axial direction to enhance the impact resistance and drainage capacity of the outer shell.

[0006] A further technical solution of this utility model is: the inner bushing is made of flexible rubber material, and its inner surface is provided with a plurality of annular grooves. The annular grooves are arranged at intervals along the axial direction of the inner bushing, and the cross-section of the annular grooves is semi-circular, so as to improve the fit between the inner bushing and the surface of the steel pipe.

[0007] A further technical solution of this utility model is: the buffer layer is located between the outer shell and the inner bushing. The buffer layer is made of porous foam material. The porous foam material has several through pores inside. The through pores are connected in the radial direction of the buffer layer to absorb external impact force and disperse stress.

[0008] A further technical solution of this utility model is: the fastening assembly includes: a clamp, latches at both ends of the clamp, and an anti-slip pad on the inner side of the clamp. The clamp is connected by the latches to form a closed loop, and the anti-slip pad contacts the outer surface of the inner bushing to prevent slippage during the fastening process.

[0009] A further technical solution of this utility model is: the inner side of the clamp is provided with a positioning groove, the positioning groove extends along the circumference of the clamp, and the width of the positioning groove matches the thickness of the buffer layer, so as to ensure that the buffer layer can be embedded in the positioning groove when the clamp is installed, thereby avoiding the displacement of the buffer layer.

[0010] A further technical solution of this utility model is: the latch includes: a fixed end, a movable end, and an elastic element disposed between the fixed end and the movable end. The fixed end and the movable end are connected by the elastic element. The contact surfaces of the fixed end and the movable end are provided with a serrated interlocking structure to enhance the fixing strength of the latch.

[0011] A further technical solution of this utility model is: the anti-slip pad is made of silicone material, and its outer surface is provided with a grid-like texture. The grid-like texture is evenly distributed along the plane of the anti-slip pad to increase the friction between the anti-slip pad and the inner bushing.

[0012] A further technical solution of this utility model is: sealing rings are provided at both ends of the outer shell. The sealing rings are made of thermoplastic elastomer, and the inner diameter of the sealing rings matches the outer diameter of the steel pipe to prevent external moisture and impurities from entering the interior of the protective sleeve.

[0013] A further technical solution of this utility model is: the inner side of the sealing ring is provided with a flange, the flange extends along the circumference of the sealing ring, and the thickness of the flange gradually decreases, so as to form a progressive compression effect when the sealing ring is installed, thereby improving the sealing performance.

[0014] The beneficial effects of this utility model are as follows: This composite protective sleeve for outdoor steel pipes achieves multiple layers of protection for the steel pipe through a combination design of an outer shell, an inner bushing, and a buffer layer. The corrugated protrusions of the outer shell enhance impact resistance and drainage capacity, effectively resisting external environmental corrosion; the annular grooves of the inner bushing improve the fit with the steel pipe surface, reducing gaps during installation; the through-holes of the buffer layer absorb impact force and disperse stress, thereby reducing damage to the steel pipe. Furthermore, the design of the fastening components simplifies the installation process; the clamps achieve quick fixing through locking, and the cooperation of the anti-slip pads and positioning grooves ensures the stability of the protective sleeve. The progressive compression effect of the sealing ring further improves the sealing performance of the protective sleeve, preventing the intrusion of moisture and impurities. The overall structure is simple, low-cost, suitable for large-scale application, and significantly extends the service life of outdoor steel pipes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a diagram of the internal structure of this utility model.

[0018] The attached figures are labeled as follows:

[0019] 1. Outer shell; 2. Inner bushing; 3. Buffer layer; 4. Fastening assembly; 5. Clamp; 6. Lock; 7. Anti-slip pad; 8. Sealing ring; 9. Corrugated protrusion; 10. Annular groove; 11. Through hole; 12. Positioning groove; 13. Flange. Detailed Implementation

[0020] This utility model discloses a composite protective sleeve for outdoor steel pipes, the specific implementation of which is described in conjunction with the appendix. Figure 1 To be continued Figure 3 Please provide a detailed explanation. For example... Figure 1 As shown, the overall structure of the composite protective sleeve includes an outer shell 1, an inner bushing 2, a buffer layer 3, and a fastening assembly 4. These components achieve effective protection for the outdoor steel pipe through specific connections and positional relationships. The outer shell 1 is the main structure, with the inner bushing 2 and buffer layer 3 both installed inside the outer shell 1, and the three together forming an integral structure. The fastening assembly 4 is used to fix the entire composite protective sleeve to the surface of the steel pipe, ensuring the stability of the protective sleeve.

[0021] The outer shell 1 is made of weather-resistant engineering plastic, and its outer surface has corrugated protrusions 9, which are uniformly distributed along the axial direction. The corrugated protrusions 9 are in the shape of continuous waves, with equal spacing between adjacent peaks and troughs, and consistent wave height. The corrugated protrusions 9 not only enhance the rigidity and impact resistance of the outer shell 1, but also effectively guide rainwater to flow along the corrugations, preventing moisture from accumulating on the protective sleeve surface. Sealing rings 8 are provided at both ends of the outer shell 1. The sealing rings 8 are made of thermoplastic elastomer, and their inner diameter matches the outer diameter of the steel pipe. A flange 13 is provided on the inner side of the sealing ring 8, extending circumferentially along the sealing ring 8, and the thickness of the flange 13 gradually decreases from one end to the other. When the sealing ring 8 is installed on the surface of the steel pipe, the flange 13 is compressed, creating a progressive tightening effect, thereby improving the sealing performance between the protective sleeve and the steel pipe.

[0022] The inner bushing 2 is located inside the outer shell 1 and is made of flexible rubber material. The inner surface of the inner bushing 2 has multiple annular grooves 10, which are spaced apart along the axial direction of the inner bushing 2, and the cross-section of each annular groove 10 is semi-circular. This design of the annular grooves 10 allows the inner bushing 2 to better fit the surface of the steel pipe during installation, reducing gaps between them. The outer surface of the inner bushing 2 is smooth and in direct contact with the buffer layer 3, without any additional connectors or adhesives between them. The length of the inner bushing 2 is equal to the length of the outer shell 1, and its two ends are tightly fitted to the inner wall of the outer shell 1 to ensure that the buffer layer 3 does not shift.

[0023] The buffer layer 3, located between the outer shell 1 and the inner bushing 2, is made of porous foam material. The buffer layer 3 has several through-holes 11, which extend radially through the buffer layer 3. The through-holes 11 are cylindrical in shape, with uniform diameter and spacing, giving the buffer layer 3 excellent energy absorption properties. When the outer shell 1 is subjected to external impact, the buffer layer 3 absorbs and disperses the impact force through the through-holes 11, thereby reducing the stress transmitted to the inner bushing 2 and the steel pipe surface. The thickness of the buffer layer 3 matches the width of the positioning groove 12, which is located inside the clamp 5 and used to fix the position of the buffer layer 3 during installation.

[0024] The fastening assembly 4 includes a clamp 5, a latch 6, and an anti-slip pad 7. The clamp 5 is a ring-shaped structure with a positioning groove 12 on its inner side, extending circumferentially along the clamp 5. The width of the positioning groove 12 is the same as the thickness of the buffer layer 3. When the clamp 5 is installed on the composite protective sleeve, the buffer layer 3 is embedded in the positioning groove 12, thus preventing displacement of the buffer layer 3 during use. The latch 6 includes a fixed end, a movable end, and an elastic element. The fixed end and the movable end are connected by the elastic element, and their contact surfaces have a serrated interlocking structure. When the latch 6 is closed, the serrated interlocking structures mesh with each other, ensuring that the clamp 5 forms a closed loop and is firmly fixed to the steel pipe surface. The anti-slip pad 7 is made of silicone material, and its outer surface has a grid-like texture, which is evenly distributed along the plane of the anti-slip pad 7. The anti-slip pad 7 is installed on the inside of the clamp 5 and contacts the outer surface of the inner bushing 2. The grid-like texture increases the friction between the anti-slip pad 7 and the inner bushing 2, preventing slippage during the tightening process.

[0025] The installation process of the composite protective sleeve is as follows: First, place the inner bushing 2 onto the surface of the steel pipe, ensuring that the annular groove 10 of the inner bushing 2 fully fits the surface of the steel pipe. Then, place the buffer layer 3 on the outside of the inner bushing 2, with the through hole 11 of the buffer layer 3 facing the inner bushing 2. Next, place the outer shell 1 onto the outside of the buffer layer 3, ensuring that both ends of the outer shell 1 are aligned with the edges of the inner bushing 2. Install sealing rings 8 at both ends of the outer shell 1, with the flange 13 of the sealing rings 8 facing the surface of the steel pipe, and tighten the sealing rings 8 to form a seal with the surface of the steel pipe. Finally, install the fastening assembly 4, place the clamp 5 on the outside of the outer shell 1, adjust the position of the clamp 5 so that the buffer layer 3 is embedded in the positioning groove 12, and then close and fix the clamp 5 using the locking buckle 6.

[0026] In practical applications, the composite protective sleeve of this invention can be widely used in outdoor steel pipe protection scenarios, such as scaffolding steel pipes on construction sites, guardrail steel pipes in municipal engineering projects, and support steel pipes in power facilities. In these scenarios, steel pipes are exposed to the external environment for a long time and are easily affected by rainwater erosion, ultraviolet aging, and external impacts. By using the composite protective sleeve of this invention, the aging process of steel pipes can be effectively slowed down, reducing maintenance costs. For example, in construction sites, after the composite protective sleeve is installed on the scaffolding steel pipes, the corrugated protrusions 9 of the outer shell 1 can quickly drain water, preventing rainwater from accumulating on the surface of the protective sleeve; the annular groove 10 of the inner bushing 2 can tightly fit the surface of the steel pipe, reducing gaps; the buffer layer 3 absorbs impact through the through holes 11, protecting the steel pipe from damage; the locking buckle 6 and anti-slip pad 7 of the fastening component 4 ensure that the protective sleeve remains stable during use and is not easy to loosen. The progressive compression effect of the sealing ring 8 further improves the sealing performance of the protective sleeve, preventing moisture and impurities from entering the interior of the protective sleeve.

[0027] As can be seen from the above embodiments, the composite protective sleeve of this utility model achieves multiple protections for outdoor steel pipes through the synergistic effect of the outer shell 1, inner bushing 2, buffer layer 3, and fastening components 4. The connection relationships, positional relationships, and mutual cooperation relationships between the components are clear, the structure is simple and easy to operate, and it is suitable for large-scale promotion and application.

[0028] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principle of this utility model is further explained below in conjunction with a specific application scenario.

[0029] In construction sites, scaffolding steel pipes are exposed to the natural environment for extended periods, making them susceptible to rain erosion, UV aging, and external impacts. To address this issue, the composite protective sleeve of this invention is used for installation. First, the inner bushing 2 is fitted onto the steel pipe surface, ensuring a tight fit between the annular groove 10 of the inner bushing 2 and the steel pipe surface. The design of the annular groove 10 utilizes the elastic deformation characteristics of flexible rubber material to adapt to minor unevenness on the steel pipe surface in both axial and radial directions, thereby reducing gaps between them. This structural design effectively prevents loosening caused by changes in the external environment while improving the overall sealing performance of the protective sleeve.

[0030] Next, the buffer layer 3 is placed outside the inner bushing 2, with the through-holes 11 of the buffer layer 3 facing the inner bushing 2. The buffer layer 3 is made of porous foam material, with its internal through-holes 11 extending radially. The uniformly distributed cylindrical pores can absorb and disperse stress under external impact. When the outer shell 1 is impacted, the through-holes 11 in the buffer layer 3 store energy through compression deformation and uniformly transfer it to the inner bushing 2, thereby reducing the local pressure on the steel pipe surface. In addition, the thickness of the buffer layer 3 matches the width of the positioning groove 12 on the inner side of the clamp 5, ensuring that the buffer layer 3 can be accurately embedded in the positioning groove 12 during subsequent installation, avoiding displacement.

[0031] Subsequently, the outer shell 1 is fitted over the outer side of the buffer layer 3, and its position is adjusted so that its two ends are aligned with the edges of the inner bushing 2. The outer shell 1 is made of weather-resistant engineering plastic, and its outer surface is provided with corrugated protrusions 9. The corrugated protrusions 9 are evenly distributed along the axial direction, and the spacing between adjacent crests and troughs is consistent. The design of the corrugated protrusions 9 not only enhances the rigidity and impact resistance of the outer shell 1, but also guides rainwater to flow along the corrugations, preventing moisture from accumulating on the surface of the protective sleeve. In addition, the continuous wave-like structure of the corrugated protrusions 9 can effectively disperse impact loads and prevent damage to the protective sleeve caused by concentrated stress.

[0032] When installing the sealing rings 8 at both ends of the outer shell 1, the flanges 13 of the sealing rings 8 should face the surface of the steel pipe, and appropriate pressure should be applied to form a seal with the surface of the steel pipe. The sealing rings 8 are made of thermoplastic elastomer, with the inner flanges 13 extending circumferentially and the thickness gradually decreasing from one end to the other. When the sealing rings 8 are compressed, the flanges 13 produce a progressive compression effect, gradually filling the tiny gaps on the surface of the steel pipe, thereby improving the sealing performance between the protective sleeve and the steel pipe. This design can effectively prevent external moisture and impurities from entering the interior of the protective sleeve, extending the service life of the steel pipe.

[0033] Finally, fastening assembly 4 is installed to complete the entire process of fixing the composite protective sleeve. Clamp 5 is placed on the outside of the outer shell 1, and its position is adjusted so that the buffer layer 3 is embedded in the positioning groove 12. The width of the positioning groove 12 is consistent with the thickness of the buffer layer 3, ensuring that the buffer layer 3 will not shift during use. The latch 6 includes a fixed end, a movable end, and an elastic element. The fixed end and the movable end are connected by the elastic element, and their contact surfaces have a serrated interlocking structure. When the latch 6 is closed, the serrated interlocking structures mesh together to form a strong closed loop, ensuring that the clamp 5 is stably fixed to the steel pipe surface. The anti-slip pad 7 is made of silicone material, and its outer surface has a grid-like texture. The grid-like texture increases the friction between the anti-slip pad 7 and the inner bushing 2, preventing slippage during fastening.

[0034] Through the above steps, the composite protective sleeve achieves multiple protective functions for the steel pipe. The corrugated protrusions 9 of the outer shell 1 quickly guide rainwater flow and prevent moisture accumulation; the annular groove 10 of the inner bushing 2 tightly fits the surface of the steel pipe, reducing gaps; the buffer layer 3 absorbs and disperses impact force through the through holes 11, protecting the steel pipe from damage; the locking buckle 6 and anti-slip pad 7 of the fastening component 4 ensure that the protective sleeve remains stable during use and is not easy to loosen; the progressive compression effect of the sealing ring 8 further improves the sealing performance of the protective sleeve, preventing moisture and impurities from entering the interior of the protective sleeve.

[0035] In practical applications, the composite protective sleeve of this invention is not only suitable for scaffolding steel pipes on construction sites, but can also be widely used in guardrail steel pipes in municipal engineering projects and support steel pipes in power facilities. The connection, position, and cooperation relationships between the components are clearly defined, the structure is simple and easy to operate, significantly improving the protective effect of outdoor steel pipes and making it suitable for large-scale promotion and application.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 composite protective sleeve for outdoor steel pipes, characterized in that, The composite protective sleeve is mainly composed of an outer shell (1), an inner bushing (2), and a buffer layer (3) disposed between the outer shell (1) and the inner bushing (2). The outer shell (1) is the main structure, and the inner bushing (2) and the buffer layer (3) are both installed inside the outer shell (1) and fixed to the surface of the steel pipe by fastening components (4).

2. The composite protective sleeve for outdoor steel pipes according to claim 1, characterized in that: The outer shell (1) is made of weather-resistant engineering plastic, and its outer surface is provided with corrugated protrusions (9). The corrugated protrusions (9) are evenly distributed along the axial direction, and the spacing between adjacent crests and troughs is equal, and the height of the corrugations is consistent.

3. The composite protective sleeve for outdoor steel pipes according to claim 1, characterized in that: The inner bushing (2) is made of flexible rubber material, and its inner surface is provided with a plurality of annular grooves (10). The annular grooves (10) are arranged at intervals along the axial direction of the inner bushing (2), and the cross section of the annular grooves (10) is semi-circular.

4. A composite protective sleeve for outdoor steel pipes according to claim 1, characterized in that: The buffer layer (3) is located between the outer shell (1) and the inner bushing (2). The buffer layer (3) is made of porous foam material. The porous foam material has several through pores (11) inside. The through pores (11) are connected in the radial direction of the buffer layer (3). The through pores (11) are cylindrical in shape and their diameter and spacing are evenly distributed.

5. A composite protective sleeve for outdoor steel pipes according to claim 1, characterized in that: The fastening assembly (4) includes a clamp (5), a latch (6) at both ends of the clamp (5), and an anti-slip pad (7) on the inner side of the clamp (5). The clamp (5) is connected to form a closed loop through the latch (6), and the anti-slip pad (7) is in contact with the outer surface of the inner bushing (2).

6. A composite protective sleeve for outdoor steel pipes according to claim 5, characterized in that: The clamp (5) has a positioning groove (12) on its inner side. The positioning groove (12) extends along the circumference of the clamp (5), and the width of the positioning groove (12) matches the thickness of the buffer layer (3).

7. A composite protective sleeve for outdoor steel pipes according to claim 1, characterized in that: The outer shell (1) has sealing rings (8) at both ends. The sealing rings (8) are made of thermoplastic elastomer. The inner side of the sealing rings (8) has a flange (13). The flange (13) extends circumferentially along the sealing rings (8). The thickness of the flange (13) gradually decreases from one end to the other end.

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