Duct penetrating floor with integrated edge protection
By integrating edge protection into the ductwork structure that penetrates the floor slab, using screws and threaded grooves to connect the base frame and the duct body, and filling the gaps with non-combustible flexible materials, the ductwork can be formed and positioned in one step. This solves the problems of sleeve misalignment and opening gaps in traditional construction, and improves construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI INSTALLATION GRP CO LTD
- Filing Date
- 2025-12-02
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional ductwork installation through floor slabs cannot be completed in one go. Subsequent construction of the floor slab can easily lead to misalignment of the duct sleeves. Furthermore, the gaps at the edges of the ductwork openings are unprotected after installation, making safety management difficult.
The ductwork through-floor structure with integrated edge protection includes the duct body, base frame, adjustment components, extension frame and corner bracket, which are connected by screws and threaded grooves, and the gaps are filled with non-combustible flexible material to achieve one-time molding and positioning.
It effectively solves the problem of misaligned duct sleeves, simplifies the construction process, improves installation efficiency, enhances safety, reduces the risk of duct damage, and meets construction process requirements.
Smart Images

Figure CN224533689U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of duct fittings, specifically a duct penetrating a floor slab with integrated edge protection. Background Technology
[0002] Ductwork sleeves are key components in buildings used to protect ductwork and floor structures. Their core functions include: achieving fire and explosion protection through the sealing of steel protective sleeves and non-combustible flexible materials, preventing the spread of fire and explosions through floor gaps, and maintaining the integrity of firewalls; simultaneously providing waterproof sealing to prevent moisture leakage to lower floors in humid areas; adapting to thermal expansion and contraction and vibration deformation of the ductwork through pre-embedded sleeves, reducing direct impact on the floor structure and extending the service life of the ductwork; and facilitating future maintenance and replacement without damaging the building structure.
[0003] Currently, traditional ductwork penetration through floor slabs cannot be completed in one go, and subsequent civil engineering floor slab construction will also require additional hole construction at this point. A single sealing construction point may require repeated construction more than three times. Secondary masonry construction can easily cause duct sleeves to become misaligned, and the gaps at the edge of the duct after installation are unprotected, making safety management difficult. Therefore, in order to address the above problems, a ductwork penetration through floor slab with integrated edge protection is proposed. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, traditional ductwork penetration through floor slabs cannot be completed in one go. Subsequent civil engineering floor slab construction also requires additional hole construction at this point. A single sealing construction point may require repeated construction more than three times. Secondary civil engineering masonry construction can easily cause duct sleeve displacement. Furthermore, the lack of protection for the gaps at the edge of the duct after installation makes safety management difficult. This utility model proposes a ductwork penetration through floor slab with integrated edge protection.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a duct penetrating a floor slab with integrated edge protection, including a duct body and four base frames. Each of the four base frames is provided with an adjustment component on the side opposite to the duct body. The adjustment component is used in conjunction with the duct body. Extension frames are provided on both sides of the four base frames. A corner bracket is provided on the side of every two adjacent extension frames. The adjustment assembly includes a connecting sleeve, which is fixedly installed on the surface of the base frame. A screw is rotatably fitted inside the connecting sleeve. One end of the screw passes through the base frame and is rotatably connected to the inner cavity of the base frame. A threaded groove is opened on the surface of the duct body, and the other end of the screw is threaded inside the threaded groove.
[0006] Preferably, a positioning block is fixedly installed on the surface of the screw, and the positioning block is rotatably connected inside the connecting sleeve.
[0007] Preferably, a positioning rod is fixedly connected to the side of the base frame opposite to the duct body, and a positioning groove is opened on the surface of the duct body. One end of the positioning rod passes through the positioning groove and is slidably connected to the inner cavity of the positioning groove.
[0008] Preferably, a connecting frame is fixedly installed on the side of the extension frame opposite to the base frame, and the connecting frame is slidably sleeved on the surface of the base frame.
[0009] Preferably, a limiting block is fixedly installed on one side of the connecting frame, a limiting frame is fixedly installed on the surface of the base frame, and one end of the limiting block extends into the interior of the limiting frame and is slidably connected to the inner cavity of the limiting frame.
[0010] Preferably, a connecting block is fixedly installed on the side of the extension frame opposite to the corner bracket, and a connecting groove is provided on the side of the corner bracket opposite to the extension frame, and the surface of the connecting block is slidably connected to the inner cavity of the connecting groove.
[0011] Preferably, a locking block is fixedly installed on the surface of the connecting block, and a locking groove is formed inside the connecting groove, with the surface of the locking block slidingly connected to the inner cavity of the locking groove.
[0012] The advantages of this utility model are: This invention, through the setting of adjustment components, not only facilitates the connection between the base frame and the duct body, but also allows for easy adjustment of the distance between them. Furthermore, by setting extension frames on both sides of the base frame and corner brackets between every two extension frames, the base frame, extension frames, and corner brackets are designed to fit snugly against the inner wall of the reserved edge opening. This effectively addresses gap issues, protects the duct during floor penetration operations, provides edge protection, and facilitates construction conditions during floor leveling. It is particularly effective in resolving the problem of misaligned masonry sleeves, meeting both construction and design requirements. The entire process is simple, practical, and safe. Compared to traditional methods, it significantly improves duct installation efficiency. Indoor installation is unaffected by weather or environmental conditions, and the risk of duct damage from civil engineering is effectively reduced. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the integrated edge protection duct penetrating the floor slab structure of this utility model; Figure 2This is a cross-sectional structural diagram of the present invention; Figure 3 This utility model Figure 2 A magnified structural diagram of part A; Figure 4 This is a schematic diagram of the base frame structure of this utility model; Figure 5 This is a schematic diagram of the corner bracket structure of this utility model.
[0015] In the diagram: 1. Main body of the duct; 2. Base frame; 3. Adjustment component; 31. Connecting sleeve; 3101. Positioning block; 32. Screw; 33. Threaded groove; 34. Positioning rod; 35. Positioning groove; 4. Extension frame; 41. Connecting frame; 42. Limiting block; 43. Limiting frame; 5. Corner bracket; 51. Connecting block; 52. Connecting groove; 53. Locking block; 54. Locking groove. Detailed Implementation
[0016] 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 scope of protection of the present utility model.
[0017] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail. This application discloses a duct penetrating a floor slab with integrated edge protection. (Refer to...) Figure 1 , Figure 2 and Figure 3 An integrated edge protection duct penetrating a floor slab includes a duct body 1 and four base frames 2. Each of the four base frames 2 is equipped with an adjustment component 3 on the side opposite to the duct body 1. The adjustment component 3 works in conjunction with the duct body 1. Extension frames 4 are provided on both sides of each of the four base frames 2. A corner bracket 5 is provided on the side of every two adjacent extension frames 4. The base frames 2, extension frames 4 and duct body 1 are filled with a non-combustible flexible material, such as mineral wool or rock wool, which is existing technology and will not be elaborated further here. The adjustment component 3 includes a connecting sleeve 31, which is fixedly installed on the surface of the base frame 2. A screw 32 is rotatably sleeved inside the connecting sleeve 31. One end of the screw 32 passes through the base frame 2 and is rotatably connected to the inner cavity of the base frame 2. A threaded groove 33 is opened on the surface of the air duct body 1, and the other end of the screw 32 is threaded inside the threaded groove 33. When it is necessary to connect the base frame 2 to the duct body 1, align the base frame 2 with the duct body 1, then rotate the screw 32 so that one end of the screw 32 is threaded into the inside of the threaded groove 33 to connect the base frame 2 with the duct body 1. Then connect the other three base frames 2 to the duct body 1 in sequence, and rotate the screw 32 as needed to adjust the distance between the base frame 2 and the duct body 1. Then select the appropriate extension frame 4 according to the size of the adjacent opening, and connect several extension frames 4 to the four base frames 2, and connect them in pairs. An additional corner bracket 5 is installed between each extension frame 4, thereby forming a whole from the base frame 2, the extension frame 4, and the corner bracket 5. Non-combustible flexible material is filled between the base frame 2, the extension frame 4, and the duct body 1. The gaps between the base frame 2, the extension frame 4, and the duct body 1 are filled with non-combustible flexible material. Then, the base frame 2, the extension frame 4, and the corner bracket 5, which form a whole, are inserted into the edge opening to position the duct body 1 inside the edge opening, thereby completing the work of the duct body 1 penetrating the floor slab and achieving a one-time forming effect.
[0018] Reference Figure 2 and Figure 3 A positioning block 3101 is fixedly installed on the surface of the screw 32. The positioning block 3101 is rotatably connected to the inside of the connecting sleeve 31. By rotating the positioning block 3101 inside the connecting sleeve 31, the position of the screw 32 inside the connecting sleeve 31 is stabilized, so as to avoid the screw 32 from being offset or moved, which would affect the connection position between the base frame 2 and the duct body 1.
[0019] Reference Figure 2 and Figure 4 A positioning rod 34 is fixedly connected to the side of the base frame 2 opposite to the duct body 1. A positioning groove 35 is opened on the surface of the duct body 1. One end of the positioning rod 34 passes through the positioning groove 35 and is slidably connected to the inner cavity of the positioning groove 35. By having one end of the positioning rod 34 pass through the positioning groove 35 and is slidably connected to the inner cavity of the positioning groove 35, the relative position of the base frame 2 and the duct body 1 is stabilized by the positioning rod 34, so as to ensure the stability of the position of the base frame 2.
[0020] Reference Figure 4 and Figure 5 A connecting frame 41 is fixedly installed on the side of the extension frame 4 opposite to the base frame 2. The connecting frame 41 is slidably sleeved on the surface of the base frame 2. A limiting block 42 is fixedly installed on one side of the connecting frame 41. A limiting frame 43 is fixedly installed on the surface of the base frame 2. One end of the limiting block 42 extends into the interior of the limiting frame 43 and is slidably connected to the inner cavity of the limiting frame 43. By sleeved the connecting frame 41 on the surface of the base frame 2 and inserting the limiting block 42 into the interior of the limiting frame 43, the extension frame 4 is connected to the base frame 2, so that the extension frame 4 can increase the length of the base frame 2.
[0021] Reference Figure 4 and Figure 5 A connecting block 51 is fixedly installed on the side of the extension frame 4 opposite to the corner bracket 5. A connecting groove 52 is opened on the side of the corner bracket 5 opposite to the extension frame 4. The surface of the connecting block 51 is slidably connected to the inner cavity of the connecting groove 52. A locking block 53 is fixedly installed on the surface of the connecting block 51. A locking groove 54 is opened inside the connecting groove 52. The surface of the locking block 53 is slidably connected to the inner cavity of the locking groove 54. By placing the corner bracket 5 on the adjacent side of the two extension frames 4, and making the connecting block 51 align with the connecting groove 52, and making the locking block 53 insert into the inside of the locking groove 54, the corner bracket 5 is stabilized on the adjacent side of the two extension frames 4, thereby avoiding gaps between the extension frame 4 and the adjacent opening.
[0022] Working principle: When it is necessary to connect the base frame 2 to the duct body 1, align the base frame 2 with the duct body 1, and insert one end of the positioning rod 34 into the positioning groove 35 to stabilize the position of the base frame 2 through the positioning rod 34 and the positioning groove 35. Then rotate the screw 32, and stabilize the position of the screw 32 inside the connecting sleeve 31 through the positioning block 3101, so that one end of the screw 32 is threaded into the thread groove 33, thereby connecting the base frame 2 to the duct body 1. Then connect the other three base frames 2 to the duct body 1 in sequence, and rotate the screw 32 as needed to adjust the distance between the base frame 2 and the duct body 1. Then select the appropriate extension frame 4 according to the size of the adjacent opening, put the connecting frame 41 on the surface of the base frame 2, and insert the limiting block 42 into the limiting frame 43 to connect several extension frames 4 with four base frames. The base frame 2 is connected, and then a corner bracket 5 is installed between every two extension frames 4. The corner bracket 5 is placed on the adjacent side of the two extension frames 4, and the connecting block 51 is connected to the connecting groove 52. The locking block 53 is inserted into the groove 54 to stabilize the corner bracket 5 on the adjacent side of the two extension frames 4. Thus, the base frame 2, extension frames 4 and corner bracket 5 are integrated into a whole. Non-combustible flexible material is filled between the base frame 2, extension frames 4 and the duct body 1. The gaps between the base frame 2, extension frames 4 and duct body 1 are filled with non-combustible flexible material. Then, the integrated base frame 2, extension frames 4 and corner bracket 5 are inserted into the edge opening to position the duct body 1 inside the edge opening, thus completing the work of the duct body 1 penetrating the floor slab and achieving a one-time forming effect. The operation is simple, convenient and quick, which effectively improves the construction efficiency.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A duct penetrating a floor slab with integrated edge protection, characterized in that: It includes a duct body (1) and four base frames (2). Each of the four base frames (2) is provided with an adjustment component (3) on the side opposite to the duct body (1). The adjustment component (3) is used in conjunction with the duct body (1). Each of the four base frames (2) is provided with an extension frame (4) on both sides. Each pair of extension frames (4) is provided with a corner bracket (5) on the side adjacent to each other. The adjustment component (3) includes a connecting sleeve (31), which is fixedly installed on the surface of the base frame (2). A screw (32) is rotatably sleeved inside the connecting sleeve (31). One end of the screw (32) passes through the base frame (2) and is rotatably connected to the inner cavity of the base frame (2). A threaded groove (33) is opened on the surface of the air duct body (1), and the other end of the screw (32) is threaded inside the threaded groove (33).
2. The duct penetrating a floor slab with integrated edge protection as described in claim 1, characterized in that: A positioning block (3101) is fixedly installed on the surface of the screw (32), and the positioning block (3101) is rotatably connected to the inside of the connecting sleeve (31).
3. The duct penetrating a floor slab with integrated edge protection as described in claim 1, characterized in that: A positioning rod (34) is fixedly connected to the side of the base frame (2) opposite to the air duct body (1). A positioning groove (35) is opened on the surface of the air duct body (1). One end of the positioning rod (34) passes through the positioning groove (35) and is slidably connected to the inner cavity of the positioning groove (35).
4. The duct penetrating a floor slab with integrated edge protection as described in claim 1, characterized in that: A connecting frame (41) is fixedly installed on the side of the extension frame (4) opposite to the base frame (2), and the connecting frame (41) is slidably sleeved on the surface of the base frame (2).
5. A duct penetrating a floor slab with integrated edge protection as described in claim 4, characterized in that: A limiting block (42) is fixedly installed on one side of the connecting frame (41), and a limiting frame (43) is fixedly installed on the surface of the base frame (2). One end of the limiting block (42) extends into the interior of the limiting frame (43) and slides in connection with the inner cavity of the limiting frame (43).
6. The duct penetrating a floor slab with integrated edge protection as described in claim 1, characterized in that: A connecting block (51) is fixedly installed on the side of the extension frame (4) opposite to the corner bracket (5). A connecting groove (52) is opened on the side of the corner bracket (5) opposite to the extension frame (4). The surface of the connecting block (51) is slidably connected to the inner cavity of the connecting groove (52).
7. A duct penetrating a floor slab with integrated edge protection as described in claim 6, characterized in that: The surface of the connecting block (51) is fixedly mounted with a locking block (53), and the inside of the connecting groove (52) is provided with a locking groove (54). The surface of the locking block (53) is slidably connected to the inner cavity of the locking groove (54).