Tool type protection device for flue hole
By designing a tool-type protective device for flue openings, the problem of falling hazards caused by aluminum formwork K-plate obstruction at flue openings was solved, achieving a protective effect that is easy to install, can be reused multiple times, and is highly adaptable.
Patent Information
- Application Number
- CN202520057134.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Because aluminum formwork panels obstruct the openings of chimneys at construction sites, it is difficult to install horizontal protection, resulting in a long-standing risk of falls from heights.
Design a tool-type protective device for flue openings, including a fixing mechanism, a baffle mechanism, and a hanging mechanism. By fixing it to the edge of the opening and hanging it on an aluminum film K plate, it can achieve the sealing and tilting obstruction of the opening, and is suitable for openings of different specifications and sizes.
It provides effective protection for flue openings, is easy to install and disassemble, facilitates multiple reuses, reduces costs, and is highly adaptable to openings of different sizes.
Smart Images

Figure CN223793898U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of protective devices, specifically relating to a tool-type protective device for flue openings. Background Technology
[0002] Construction sites are among the most dangerous industries, and openings near edges are one of the most frequent hazards during construction, especially flue openings, which are large and prone to falls from heights. Furthermore, in recent years, many construction sites have adopted aluminum formwork. Unlike conventional wooden formwork, the presence of K-boards in aluminum formwork obstructs flue openings, making it difficult to install horizontal protection, thus perpetuating the risk of falls from heights. Utility Model Content
[0003] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide a tool-type protective device for flue openings.
[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0005] A tool-type protective device for flue openings includes a fixing mechanism, a baffle mechanism hinged to the fixing mechanism, and a hanging mechanism connected to the other end of the baffle mechanism;
[0006] The fixing mechanism includes an upper fixing seat, which is L-shaped. The upper fixing seat has first sliding grooves on both sides. A lower fixing seat is slidably installed in the first sliding grooves. The lower fixing seat is L-shaped. Two fastening screws are installed between the lower fixing seat and the upper fixing seat.
[0007] The baffle mechanism includes a main board hinged to the upper fixed seat. The main board has two sets of first slides in the horizontal direction. The first slides have an L-shaped cross-section. An extension plate of the main board is slidably installed on the first slides. Four first studs are symmetrically fixedly installed on the main board. The main board extension plate has first oblong holes with specifications and positions matching the first studs. The first studs are threadedly connected to first nuts. The main board has a second slide groove. A secondary plate is slidably installed on the second slide groove. The secondary plate has two sets of second slides in the same direction as the first slides. The second slides have an L-shaped cross-section. A secondary plate extension plate is slidably installed on the second slides. Four second studs are symmetrically fixedly installed on the secondary plate. The secondary plate extension plate has second oblong holes with specifications and positions matching the second studs. The second studs are threadedly connected to second nuts.
[0008] The hanging mechanism includes a lifting ring fixedly installed at the end of the extension plate of the sub-plate, the lifting ring being connected to a steel rope, and the end of the steel rope being connected to a hook.
[0009] Furthermore, the bottom of the lower fixing seat is welded with a limiting cylinder that matches the specifications and model of the fastening screw nut. This design prevents the fastening screw from rotating when the nut of the fastening screw is rotated, which would make it difficult to move the lower fixing seat and lock the fastening screw.
[0010] Furthermore, both the mainboard extension board and the secondary board extension board are integrally connected with a pull strip, which facilitates the pulling of the mainboard extension board and the secondary board extension board.
[0011] Furthermore, the mainboard extension board and the secondary board extension board are completely identical. This design eliminates the need for them to be used together, which facilitates spare parts and quick installation.
[0012] Furthermore, the overall thickness of the motherboard and the sub-board is five millimeters. This design ensures load-bearing capacity without being too heavy.
[0013] Furthermore, both the main board and the sub-board are made of steel plates, a design that provides corrosion resistance and good load-bearing capacity.
[0014] The beneficial effects of using this utility model are as follows:
[0015] This utility model has a reasonable structure. The fixing mechanism is fixed to the edge of the opening, and then the hanging mechanism is used to hang it on the aluminum film K plate. The baffle mechanism can achieve the sealing and blocking of the opening, thereby achieving the protection effect. Moreover, because it is hinged, the baffle mechanism can also tilt to block and prevent materials from being piled on it.
[0016] The structure of this utility model is simple to install and disassemble, convenient to use and carry, easy to reuse multiple times, and reduces costs;
[0017] This invention, through the combined effect of the main board extension plate and the secondary board extension plate, can adjust the area of protection, thereby adapting to the protection of openings of different sizes and specifications, and has strong adaptability. Attached Figure Description
[0018] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;
[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of a tool-type protective device for a flue opening according to the present invention. Figure 1 ;
[0020] Figure 2 This is a schematic diagram of the structure of an embodiment of a tool-type protective device for a flue opening according to the present invention. Figure 2 ;
[0021] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of a tool-type protective device for a flue opening according to the present invention;
[0022] Figure 4 This is a schematic diagram of the fully extended structure of an embodiment of the tool-type protective device for a flue opening according to the present invention.
[0023] The symbols for the main components are explained below:
[0024] Fixing mechanism 1; baffle mechanism 2; hanging mechanism 3;
[0025] Upper fixed seat 101; first slide groove 102; lower fixed seat 103; fastening screw 104; limiting cylinder 105;
[0026] Main board 201; First slide rail 202; Main board extension board 203; First stud 204; First oblong hole 205; First nut 206; Second slide groove 207; Sub-board 208; Second slide rail 209; Sub-board extension board 210; Second stud 211; Second oblong hole 212; Second nut 213; Pull bar 214;
[0027] 301 lifting ring; 302 steel rope; 303 hook. Detailed Implementation
[0028] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0029] like Figures 1-4 As shown, the present invention provides a tool-type protective device for a flue opening, including a fixing mechanism 1, a baffle mechanism 2 hinged to the fixing mechanism 1, and a hanging mechanism 3 connected to the other end of the baffle mechanism 2.
[0030] The fixing mechanism 1 includes an upper fixing seat 101, which is L-shaped. The upper fixing seat 101 has first sliding grooves 102 on both sides. A lower fixing seat 103 is slidably installed in the first sliding grooves 102. The lower fixing seat 103 is L-shaped. Two fastening screws 104 are installed between the lower fixing seat 103 and the upper fixing seat 101.
[0031] The baffle mechanism 2 includes a main board 201 hinged to the upper fixed seat 101. The main board 201 has two sets of first slide rails 202 arranged laterally. The first slide rails 202 have an L-shaped cross section. A main board extension plate 203 is slidably mounted on the first slide rails 202. Four first studs 204 are symmetrically fixedly mounted on the main board 201. The main board extension plate 203 has first oblong holes 205 that match the specifications and positions of the first studs 204. The first studs 204 are threadedly connected to first nuts 206. The main board 201 has a second slide rail. The second slide 207 has a secondary plate 208 slidably installed on it. The secondary plate 208 has two sets of second slides 209 with the same direction as the first slide 202. The cross section of the second slide 209 is L-shaped. The secondary plate extension plate 210 is slidably installed on the second slide 209. The secondary plate 208 has four second studs 211 symmetrically fixedly installed on it. The secondary plate extension plate 210 has second waist-shaped holes 212 that match the specifications and positions of the second studs 211. The second studs 211 are threadedly connected to second nuts 213.
[0032] The hanging mechanism 3 includes a lifting ring 301 fixedly installed at the end of the extension plate 210 of the sub-plate. The lifting ring 301 is connected to a steel rope 302, and the end of the steel rope 302 is connected to a hook 303.
[0033] In this implementation case, when using a tool-type protective device for a flue opening, the fixing mechanism 1 is fixed to the edge of the opening, and then the hanging mechanism 3 is hung on the aluminum film K plate on the side of the opening. Then the baffle mechanism 2 can complete the protection of the opening and achieve the protective purpose. It should be noted that, with this protective method, when the length of the baffle mechanism 2 is greater than the opening, it can also be directly attached to the aluminum film K plate without hanging, further simplifying the use.
[0034] Specifically, the upper fixing seat 101 is attached to the upper edge of the opening, and the lower fixing seat 103 is suspended below the edge of the opening. Then, the fastening screw 104 is rotated, and under the effect of the spiral force, the lower fixing seat 103 moves towards the upper fixing seat 101, thereby achieving the purpose of clamping and fixing the upper fixing seat 101 and the lower fixing seat 103 to the edge of the opening. Moreover, this method can adapt to the installation of opening edges of different thicknesses and will not damage the edge of the opening. Then, the hook 303 is hung on the aluminum film K plate, and the baffle mechanism 2 naturally tilts and overlaps above the opening. Furthermore, the front end of the steel rope 302 can be installed by inserting a pin instead of using the hook 303 to fix the end of the steel rope 302.
[0035] Furthermore, when the specifications of the baffle mechanism 2 are not compatible with the opening size, further adjustments can be made. The adjustment method is to pull the main board extension plates 203 on both sides of the main board 201 to widen the lateral blocking area of the main board 201, and then use the first nut 206 to tighten it on the first stud 204 to fix the position of the active extension plate 203 and prevent displacement under force, thereby exposing the opening. This is the width adjustment.
[0036] Pulling the sub-board 208 on the lower side of the main board 201 can directly change the overall length of the main board 201 and the sub-board 208. Since the mounting mechanism 3 is installed on the sub-board 208, the sub-board 208 is not easy to retract into the main board 201 after the length changes, thus achieving length adjustment.
[0037] When both length and width need to be changed, first adjust the width of the main board 201, then pull out the sub-board 208, and adjust and fix the width of the sub-board extension board 210 by adjusting and fixing the main board extension board 203, so as to adapt to longer and wider openings.
[0038] In summary, this structure has wide adaptability and can be adapted to the protection of openings of different specifications and sizes. It is also simple and convenient to install. Moreover, the entire protective device can be disassembled by removing the fixing mechanism 1, so as to achieve the purpose of recycling and reuse.
[0039] Preferably, the bottom of the lower fixing seat 103 is welded with a limiting sleeve 105 that matches the specification and model of the nut of the fastening screw 104. This design prevents the fastening screw 104 from rotating when the nut of the fastening screw 104 is rotated, which would be detrimental to the displacement of the lower fixing seat 103 and the locking of the fastening screw 104. In fact, a structure to prevent the fastening screw 104 from rotating under force can also be considered depending on the specific situation.
[0040] Preferably, both the mainboard extension board 203 and the secondary board extension board 210 are integrally connected with a pull strip 214. This design facilitates the pulling of the mainboard extension board 203 and the secondary board extension board 210. In fact, measures to facilitate the pulling of the mainboard extension board 203 and the secondary board extension board 210 can also be considered according to specific circumstances, such as opening a handle.
[0041] Ideally, the motherboard extension board 203 and the secondary extension board 210 should be completely identical. This design eliminates the need for them to be used together, which facilitates spare parts and quick installation. In fact, the specifications and dimensions of the motherboard extension board 203 and the secondary extension board 210 can also be customized according to specific circumstances.
[0042] The preferred overall thickness of the motherboard 201 and sub-board 208 is five millimeters. This design ensures load-bearing capacity without being too heavy. In practice, the overall thickness of the motherboard 201 and sub-board 208 can also be considered depending on the specific circumstances.
[0043] It is preferable that both the main board 201 and the sub-board 208 are made of steel plates. This design is rust-resistant and has good load-bearing capacity. In fact, the material selection of the main board 201 and the sub-board 208 can also be considered according to the specific situation.
[0044] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A tool guard for a flue opening, comprising a securing means (1), characterised in that: The fixed mechanism (1) is hingedly installed with a baffle mechanism (2), and the other end of the baffle mechanism (2) is connected with a hanging mechanism (3). The fixed mechanism (1) comprises an upper fixed seat (101), the upper fixed seat (101) is L-shaped, the upper fixed seat (101) is provided with a first sliding groove (102) on both sides, the first sliding groove (102) is slidably installed with a lower fixed seat (103), the lower fixed seat (103) is L-shaped, and two fastening screws (104) are installed between the lower fixed seat (103) and the upper fixed seat (101). The baffle mechanism (2) comprises a main plate (201) hingedly connected with the upper fixed seat (101), the main plate (201) is transversely provided with two groups of first sliding grooves (202), the first sliding grooves (202) are L-shaped in cross section, the first sliding grooves (202) are slidably installed with a main plate extension plate (203), the main plate (201) is fixedly installed with four first studs (204) in a symmetrical manner, the main plate extension plate (203) is provided with first waist-shaped holes (205) matched with the first studs (204) in specification and position, the first studs (204) are threadedly connected with first nuts (206), the main plate (201) is provided with a second sliding groove (207), the second sliding groove (207) is slidably installed with a secondary plate (208), the secondary plate (208) is provided with two groups of second sliding grooves (209) in the same direction as the first sliding grooves (202), the second sliding grooves (209) are L-shaped in cross section, the second sliding grooves (209) are slidably installed with a secondary plate extension plate (210), the secondary plate (208) is fixedly installed with four second studs (211) in a symmetrical manner, the secondary plate extension plate (210) is provided with second waist-shaped holes (212) matched with the second studs (211) in specification and position, and the second studs (211) are threadedly connected with second nuts (213). The hanging mechanism (3) comprises a lifting ring (301) fixedly installed at the end of the secondary plate extension plate (210), the lifting ring (301) is connected with a steel wire (302), and the end of the steel wire (302) is connected with a hook (303).
2. A tool shield for a flue opening according to claim 1, characterised in that: The bottom of the lower fixed seat (103) is welded with a limiting cylinder (105) matched with the nut specification model of the fastening screw (104).
3. A tool shield for a flue opening according to claim 2, characterised in that: The main plate extension plate (203) and the secondary plate extension plate (210) are integrally connected with a convenient stay (214).
4. A tool shield for a flue opening according to claim 3, wherein: The main plate extension plate (203) and the secondary plate extension plate (210) are completely same.
5. A tool shield for a flue opening according to claim 4, characterised in that: The thickness dimension of the main plate (201) and the secondary plate (208) is five millimeters.
6. A tool shield for a flue opening according to claim 5, wherein: The main plate (201) and the secondary plate (208) are steel plates.