Civil defense protective sleeve

Abstract

The utility model belongs to the technical field of civil air defence engineering equipment relates to a civil air defence protective sleeve. The utility model, including two symmetrical set split type sleeve body, the split type sleeve body head has fixed protection spare, when two split type sleeve body close, form a cable installation space between two split type sleeve body. The utility model in the construction process, two split type sleeve body form complete sleeve main body through close splicing, fixed protection spare restricts the displacement of sleeve head, the tail detachable fixed structure is from the tail and is tight to the sleeve, and the middle part fixed reinforcing part enhances the connection strength of the middle part, and the three cooperate and convert the split type structure into the whole stable structure, and the split type design realizes the innovative mode of "cable does not move, sleeve installation", solves the installation pain point of traditional whole pipe, three -segment type fixed structure ensures that the whole strength after split is not lower than traditional whole pipe, satisfies the protection requirement of civil air defence engineering.

Description

Technical Field

[0001] This utility model belongs to the technical field of civil defense engineering equipment and relates to a civil defense protective sleeve. Background Technology

[0002] In civil defense engineering construction, protective conduits are crucial components for ensuring the safe passage of various cables through walls and guaranteeing the airtightness of the civil defense project. Traditional protective conduits are typically designed as integral pipe structures, with the installation process involving first installing the conduit and then threading the cables. However, in actual construction, it has been found that in many cases, cables are already threaded after the initial drilling. In such situations, integral conduits cannot be installed. Installing an integral conduit requires removing the already threaded cables and redoing the installation, which is not only difficult but also consumes significant manpower, resources, and time, and may even damage the installed cables, affecting their normal use and project progress. Therefore, a new type of civil defense protective conduit is urgently needed to solve this problem.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses a protective and airtight D-type sleeve for penetrating air-raid shelter floors [application number: 202320838876.8], which includes a cylindrical sleeve, a pipe installed inside the sleeve, a wing ring fixedly installed in the middle of the sleeve, a fixed flange fixedly installed at one end of the sleeve, a baffle fixedly installed on the fixed flange, and an annular side plate fixedly installed in the middle of the baffle. However, in actual construction, this solution still has drawbacks, such as high construction difficulty, high consumption of manpower, material resources and time costs, and potential damage to completed cables, affecting their normal use and project progress. Summary of the Invention

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a protective sleeve for civil defense.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A civil defense protective sleeve includes two symmetrically arranged split sleeve bodies. The heads of the split sleeve bodies have fixed protective components. When the two split sleeve bodies are close together, a cable installation space is formed between the two split sleeve bodies. The tail ends of the two split sleeve bodies are fitted with detachable tail fixing structures. A middle fixing reinforcement is installed between the detachable tail fixing structure and the fixed protective component.

[0007] In the aforementioned civil defense protective sleeve, the detachable tail fixing structure includes two tail fixing rings sleeved on the tail of the two separate sleeve bodies, and the inner wall of the tail fixing ring is in close contact with the outer wall of the separate sleeve body.

[0008] In the aforementioned civil defense protective sleeve, the cross-section of the tail fixing ring is semi-circular, and both ends of the tail fixing ring are provided with screw fixing parts.

[0009] In the aforementioned civil defense protective sleeve, the screw-fixed part includes screw-connected extension plates disposed at both ends of the tail fixing ring. The screw-connected extension plates have screw holes. When the two tail fixing rings are sleeved on the tails of the two split sleeve bodies, a semi-circular rubber washer is sleeved between the split sleeve body and the tail fixing ring.

[0010] In the aforementioned civil defense protective sleeve, a positioning hole is provided in the screw extension plate at one end of the tail fixing ring, and a positioning shaft is provided on the screw extension plate at the other end. When the two tail fixing rings are close together, the positioning shaft on the screw extension plate of one tail fixing ring is engaged with the positioning shaft in the screw extension plate of the other tail fixing ring.

[0011] In the aforementioned civil defense protective sleeve, the central fixing reinforcement includes several fixing clips disposed in the middle of the two separate sleeve bodies, with two adjacent fixing clips arranged parallel to each other.

[0012] In the aforementioned civil defense protective sleeve, the fixing clamp is made of spring steel and has a slot inside. The outer ring of the fixing clamp is provided with an outer plate that is directly opposite to the slot. When the fixing clamp is sleeved on the two separate sleeve bodies, the slot is filled by welding the outer plate.

[0013] In the aforementioned civil defense protective sleeve, the split sleeve body has several bonding holes, which are staggered with the fixing clips.

[0014] In the aforementioned civil defense protective sleeve, the fixed protective component includes a fixed protective plate disposed at the head of the split sleeve body. The cross-section of the fixed protective plate is semi-circular, and the outer diameter of the fixed protective plate is larger than the outer diameter of the split sleeve body.

[0015] In the aforementioned civil defense protective sleeve, the fixed protective plate has a screw-fixed hole groove.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] During construction, this utility model uses two separate sleeve bodies that are tightly joined together to form a complete sleeve body. Fixed protective components restrict the displacement of the sleeve head, a detachable fixing structure at the tail tightens the sleeve from the tail, and a middle fixing reinforcement enhances the connection strength in the middle. The three components work together to transform the separate structure into a stable overall structure. The separate design realizes the innovative mode of "cables not moving, sleeve installation", solving the installation pain points of traditional integral pipes. The three-section fixing structure ensures that the overall strength after separation is not lower than that of traditional integral pipes, meeting the protection requirements of civil defense projects.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0021] Figure 3 This is a front view of the present invention.

[0022] In the diagram: 1. Split-type sleeve body; 2. Fixing and protective component; 3. Cable installation space; 4. Removable tail fixing structure; 5. Middle fixing reinforcement component; 6. Tail fixing ring; 7. Screw-connecting fixing part; 8. Screw-connecting extension plate; 9. Screw-connecting hole; 10. Positioning hole; 11. Positioning shaft; 50. Fixing clamp; 51. Outer plate; 12. Adhesive hole position; 13. Fixing and protective plate; 14. Screw-connecting fixing hole groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1-3 As shown, a civil defense protective sleeve includes two symmetrically arranged split sleeve bodies 1. The head of each split sleeve body 1 has a fixing protective component 2. When the two split sleeve bodies 1 are close together, a cable installation space 3 is formed between the two split sleeve bodies 1. The tail ends of the two split sleeve bodies 1 are fitted with a detachable tail fixing structure 4. A middle fixing reinforcement component 5 is installed between the detachable tail fixing structure 4 and the fixing protective component 2.

[0025] In this embodiment, the use of a split design is one of the creative starting points of this invention, breaking through the limitation that traditional integral conduits cannot be installed in scenarios where cables have already been laid. The split conduit body 1 has a fixed protective component 2 integrally formed at its head. When the two split conduit bodies 1 are tightly attached along their symmetrical planes, a complete cable installation space 3 is naturally formed between their inner walls. The shape of this space is adapted to the shape of the cable, which can accurately wrap the already laid cable. The tail ends of the two split conduit bodies 1 are fitted with a detachable tail fixing structure 4 for quick fastening at the tail. A central fixing component is installed between the detachable tail fixing structure 4 and the fixed protective component 2. The fixed reinforcing component 5 forms a three-section stable structure of "head protection - middle reinforcement - tail fixation". The two split sleeve bodies 1 are joined together to form a complete sleeve body. The fixed protective component 2 restricts the displacement of the sleeve head. The tail detachable fixing structure 4 tightens the sleeve from the tail. The middle fixed reinforcing component 5 enhances the middle connection strength. The three components work together to transform the split structure into an overall stable structure. The split design realizes the innovative mode of "cable not moving, sleeve installation", which solves the installation pain points of traditional integral pipes. The three-section fixing structure ensures that the overall strength after splitting is not lower than that of traditional integral pipes, meeting the protection requirements of civil defense projects.

[0026] Combination Figure 1-3 As shown, the detachable tail fixing structure 4 includes two tail fixing rings 6 sleeved on the tail of the two split sleeve bodies 1, and the inner wall of the tail fixing ring 6 is in close contact with the outer wall of the split sleeve body 1.

[0027] Specifically, the tail fixing ring 6, through the tight contact between its inner wall and the outer wall of the split sleeve body 1, forcibly tightens the tails of the two split sleeve bodies 1, preventing gaps from appearing at the splice. Through the physical constraint of the tail fixing ring 6, the initial fixation of the sleeve tail is quickly achieved, making installation convenient and the fixation reliable, while providing a stable foundation for subsequent sealing treatment.

[0028] Combination Figure 1-3 As shown, the tail fixing ring 6 has a semi-circular cross-section, and the tail fixing ring 6 has screw fixing parts 7 at both ends.

[0029] In this embodiment, the semi-circular structure allows the tail fixing ring 6 to fit perfectly with the split sleeve body 1. The screw-fixed part 7 locks the two tail fixing rings 6 together with bolts, realizing the transformation from "split wrapping" to "overall fixing". The semi-circular structure ensures uniform force distribution and avoids local stress concentration. The screw-fixed part 7 provides a detachable fixing method, which is convenient for later maintenance and adjustment.

[0030] The screw-fixed part 7 includes screw-fixed extension plates 8 disposed at both ends of the tail fixing ring 6. The screw-fixed extension plates 8 are provided with screw holes 9. When the two tail fixing rings 6 are sleeved on the tail of the two split sleeve bodies 1, a semi-circular rubber washer is sleeved between the split sleeve body 1 and the tail fixing ring 6.

[0031] In this embodiment, the screw-fit fixing part 7 includes screw-fit extension plates 8 integrally disposed at both ends of the tail fixing ring 6. The screw-fit extension plates 8 are disposed perpendicular to the end face of the tail fixing ring 6, and a through screw hole 9 is opened in the plate. When the two tail fixing rings 6 are sleeved on the tail of the sleeve, a semi-circular rubber washer (not shown in the figure) is pre-sleeved between the split sleeve body 1 and the tail fixing ring 6. The thickness of the rubber washer is adapted to the gap between the two. The screw-fit extension plates 8 of the two tail fixing rings 6 are fastened by bolts passing through the screw hole 9. The rubber washer is squeezed between the sleeve body and the fixing ring, filling the small gap. The screw-fit extension plate 8 extends the lever arm, so that the bolt fastening force is transmitted to the sleeve more evenly. The rubber washer not only enhances the sealing performance, but also avoids wear and abnormal noise caused by direct contact between metal parts.

[0032] Combination Figure 2 As shown, a positioning hole 10 is provided in the screw extension plate 8 at one end of the tail fixing ring 6, and a positioning shaft 11 is provided on the screw extension plate 8 at the other end. When the two tail fixing rings 6 are close together, the positioning shaft 11 on the screw extension plate 8 of one tail fixing ring 6 is engaged with the positioning shaft 11 in the screw extension plate 8 of the other tail fixing ring 6.

[0033] In this embodiment, to improve the installation accuracy of the tail fixing ring 6, a positioning hole 10 is provided in the screw extension plate 8 at one end of the tail fixing ring 6, and a positioning shaft 11 is welded on the screw extension plate 8 at the other end. The diameter of the positioning shaft 11 is matched with the inner diameter of the positioning hole 10. When the two tail fixing rings 6 are tightly spliced, the positioning shaft 11 of one tail fixing ring 6 will be precisely inserted into the positioning hole 10 of the other tail fixing ring 6 to form a snap-fit ​​positioning. The positioning shaft 11 and the pre-positioning guide screw hole 9 of the positioning hole 10 are precisely aligned to avoid hole position deviation during bolt installation, improve installation efficiency, ensure the symmetry of the two tail fixing rings 6, and avoid loosening of the fixation or failure of the seal due to misalignment.

[0034] The central fixing reinforcement 5 includes several fixing clips 50 disposed in the middle of the two split sleeve bodies 1, with two adjacent fixing clips 50 arranged parallel to each other.

[0035] In this embodiment, the central fixing reinforcement 5 adopts a combination structure of several fixing clips 50. The fixing clips 50 are distributed axially along the middle of the two split sleeve bodies 1. The two adjacent fixing clips 50 maintain a parallel posture to form a uniform central constraint point. Multiple fixing clips 50 clamp the split sleeve body 1 from different positions in the middle of the sleeve, forming a multi-point fixation with the head and tail structures, dispersing axial and radial stress, solving the problem of easy deformation in the middle of the split structure, and ensuring the overall rigidity of the sleeve through multi-point reinforcement to meet the pressure resistance requirements of civil defense projects.

[0036] The fixing clip 50 is made of spring steel and has a slot inside. The outer ring of the fixing clip 50 is provided with an outer plate 51 that is directly opposite to the slot. When the fixing clip 50 is sleeved on the two split sleeve bodies 1, the slot is filled by welding the outer plate 51.

[0037] In this embodiment, the fixing clamp 50 is made of high-strength spring steel, which utilizes its elastic deformation capability to achieve the clamping action. The fixing clamp 50 has a slot (not shown in the figure) opened along the axial direction, which facilitates the opening and closing adjustment during installation. The outer ring of the fixing clamp 50 is welded with an outer plate 51 corresponding to the slot position. The size of the outer plate 51 covers the slot area. After the fixing clamp 50 is installed on the two split sleeve bodies 1 and adjusted into place, the outer plate 51 is welded to the joint of the fixing clamp 50, so that the outer plate 51 completely fills the slot, forming a closed ring-shaped fixing structure. The elastic force of the spring steel makes the fixing clamp 50 naturally clamp the middle of the sleeve. After welding the outer plate 51, the elastic clamping is transformed into rigid fixing. The slot design provides operating space for installation, while the outer plate 51 eliminates the strength loss caused by the slot. The spring steel material ensures the clamping force is durable, and the welding fixation achieves structural reinforcement. The combination of the two makes the central fixing strength far exceed that of ordinary clamps.

[0038] Combination Figure 2 As shown, the split sleeve body 1 has a plurality of bonding holes 12, which are staggered with the fixing clips 10.

[0039] In this embodiment, the inner wall of the split sleeve body 1 is provided with a plurality of bonding holes 12 spaced apart along the axial direction. The distribution of the bonding holes 12 is staggered from that of the fixing clip 50, forming complementary reinforcement points. When the two split sleeve bodies 1 are attached, the bonding holes 12 form a through-hole for adhesive injection. After the injected adhesive is cured in the hole, the two split sleeve bodies 1 are bonded into a whole. This forms a "mechanical + chemical" dual reinforcement with the mechanical fixation of the fixing clip 50. The bonding holes 12 solve the sealing and bonding problem of the splicing surface of the split structure. Together with the physical fixation of the fixing clip 50, they greatly improve the overall sealing performance and anti-separation ability, avoiding gaps that may occur with simple mechanical fixation.

[0040] Combination Figure 1 , Figure 2As shown, the fixed protective component 2 includes a fixed protective plate 13 disposed at the head of the split sleeve body 1. The fixed protective plate 13 has a semi-circular cross-section, and the outer diameter of the fixed protective plate 13 is larger than the outer diameter of the split sleeve body 1.

[0041] In this embodiment, the core of the fixed protective component 2 is the fixed protective plate 13. The fixed protective plate 13 is integrally formed on the head of the split sleeve body 1. Its cross-section is semi-circular. After the two fixed protective plates 13 are spliced ​​together, they form a complete circle. The outer diameter of the fixed protective plate 13 is larger than the outer diameter of the split sleeve body 1, forming a protective flange on the head. The larger outer diameter of the fixed protective plate 13 can block the edge of the through hole and fit with the wall surface, which not only restricts the axial displacement of the sleeve, but also prevents external impurities from entering from the gap in the head. The flange structure enhances the protective capability of the head. The semi-circular design is compatible with the split sleeve body 1, ensuring the integrity and sealing of the head after splicing.

[0042] Combination Figure 1 As shown, the fixed protective plate 13 has a screw-fixed groove 14.

[0043] In this embodiment, the bolt passes through the screw fixing hole 14 to fix the fixed protective plate 13 to the wall. Then, the fixed protective plate 13 drives the entire sleeve to be tightly connected to the wall, realizing the rigid fixation of the sleeve to the wall, preventing the sleeve from being displaced under vibration or pressure, and ensuring the stability of the airtight boundary of the civil defense project.

[0044] The working principle of this utility model is as follows:

[0045] During actual installation, select the appropriate size of the split-type sleeve body 1 according to the cable specifications and the size of the wall penetration hole. Carefully attach the two split-type sleeve bodies 1 to the cable from both sides, ensuring that the cable is centered in the cable installation space 3. Pick up the two tail fixing rings 6 and put them on the tails of the two split-type sleeve bodies 1 respectively, aligning the positioning shaft 11 with the positioning hole 10 and inserting it to initially fix the relative positions of the two tail fixing rings 6. Then, prepare the bolts and nuts, pass the bolts through the screw holes 9 on the two screw extension plates 8, and tighten the nuts to firmly fix the two tail fixing rings 6 to the tails of the split-type sleeve bodies 1, completing the tail fixing work. During this process, pay attention to checking whether the semi-circular rubber gaskets are installed in place to ensure that they can play a good sealing and cushioning role. Place several fixing clips 50 in the middle position of the two split-type sleeve bodies 1 according to the design requirements, ensuring that the adjacent fixing clips 50 are parallel to each other. Using welding equipment, the outer plate 51 at the outer ring of the fixing clamp 50 is welded to the fixing clamp 50, filling the slots inside the fixing clamp 50, so that the fixing clamp 50 is firmly fixed to the split sleeve body 1, enhancing the structural strength and stability of the middle part of the sleeve. Simultaneously, according to the position of the bonding hole 12, a suitable adhesive is prepared and injected into the bonding hole 12 to further strengthen the connection and sealing performance between the two split sleeve bodies 1. The fixing protective plate 13 is installed on the head of the split sleeve body 1, ensuring that the semi-circular structure of the fixing protective plate 13 fits tightly against the head of the split sleeve body 1. According to the installation location requirements, bolts and other connectors are used, passing through the screw fixing holes 14 in the fixing protective plate 13, to fix the entire protective sleeve to the wall or other installation base, completing the entire installation of the protective sleeve. After installation, the entire protective sleeve is inspected to ensure that all components are firmly installed and the sealing performance is good, meeting the protection requirements of civil defense projects.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0047] Although this document frequently uses terms such as split-type sleeve body 1, fixing and protective component 2, cable installation space 3, detachable tail fixing structure 4, middle fixing and reinforcing component 5, tail fixing ring 6, screw-on fixing part 7, screw-on extension plate 8, screw-on hole 9, positioning hole 10, positioning shaft 11, fixing clamp 50, outer plate 51, bonding hole position 12, fixing and protective plate 13, screw-on fixing slot 14, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A type of civil defense protective sleeve, comprising two symmetrically arranged split sleeve bodies (1), characterized in that, The split sleeve body (1) has a fixed protective component (2) at its head. When the two split sleeve bodies (1) are close together, a cable installation space (3) is formed between the two split sleeve bodies (1). The tail of the two split sleeve bodies (1) is fitted with a tail detachable fixing structure (4). A middle fixing reinforcement component (5) is installed between the tail detachable fixing structure (4) and the fixed protective component (2).

2. The civil defense protective sleeve according to claim 1, characterized in that, The detachable tail fixing structure (4) includes two tail fixing rings (6) sleeved on the tail of the two split sleeve bodies (1), and the inner wall of the tail fixing rings (6) is in close contact with the outer wall of the split sleeve bodies (1).

3. The civil defense protective sleeve according to claim 2, characterized in that, The tail fixing ring (6) has a semi-circular cross-section, and the tail fixing ring (6) has screw fixing parts (7) at both ends.

4. The civil defense protective sleeve according to claim 3, characterized in that, The screw-fixed part (7) includes screw-extended plates (8) disposed at both ends of the tail fixing ring (6). The screw-extended plate (8) has screw holes (9). When the two tail fixing rings (6) are sleeved on the tail of the two split sleeve bodies (1), a semi-circular rubber gasket is sleeved between the split sleeve body (1) and the tail fixing ring (6).

5. The civil defense protective sleeve according to claim 4, characterized in that, A positioning hole (10) is provided in the screw extension plate (8) at one end of the tail fixing ring (6), and a positioning shaft (11) is provided on the screw extension plate (8) at the other end. When the two tail fixing rings (6) are close together, the positioning shaft (11) on the screw extension plate (8) of one tail fixing ring (6) is engaged with the positioning shaft (11) in the screw extension plate (8) of the other tail fixing ring (6).

6. The civil defense protective sleeve according to any one of claims 1-5, characterized in that, The central fixing reinforcement (5) includes several fixing clips (50) disposed in the middle of the two split sleeve bodies (1), with two adjacent fixing clips (50) arranged parallel to each other.

7. The civil defense protective sleeve according to claim 6, characterized in that, The fixing clip (50) is made of spring steel. The fixing clip (50) has a slot inside. The outer ring of the fixing clip (50) is provided with an outer plate (51) that is directly opposite to the slot. When the fixing clip (50) is sleeved on the two split sleeve bodies (1), the slot is filled by welding the outer plate (51).

8. The civil defense protective sleeve according to claim 7, characterized in that, The split sleeve body (1) has several bonding holes (12) inside, and the bonding holes (12) are staggered with the fixing clips (50).

9. The civil defense protective sleeve according to claim 1, characterized in that, The fixed protective component (2) includes a fixed protective plate (13) disposed at the head of the split sleeve body (1). The cross-section of the fixed protective plate (13) is semi-circular, and the outer diameter of the fixed protective plate (13) is larger than the outer diameter of the split sleeve body (1).

10. The civil defense protective sleeve according to claim 9, characterized in that, The fixed protective plate (13) has a screw-fixed hole groove (14) inside.

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