A floor door protection device for an external construction elevator

Abstract

This utility model discloses an externally mounted construction hoist floor door protection device in the field of construction safety protection technology, including a keel, a floor door, diagonal braces, and a perforated plate. The keel includes a main keel square tube, angle iron pre-welded to the main keel square tube, and hinges pre-installed on the main keel square tube. The angle iron is fixed to the edge of the floor structure with screws to achieve an external connection between the keel and the floor structure. The floor door is rotatably connected to the main keel square tube via the hinges. One end of the diagonal brace is fixed to the ground, and the other end is fixed to the main keel square tube, forming support for the keel. The perforated plate is detachably connected to the keel via edge clips to cover the outer side of the frame body formed by the keel. This utility model reduces installation difficulty and achieves the recyclability of the device by decomposing the floor door into four detachable structures: keel, floor door, diagonal braces, and perforated plate.

Description

Technical Field

[0001] This utility model relates to the field of building construction safety protection technology, and more specifically, to an externally mounted construction hoist floor door protection device. Background Technology

[0002] Construction hoists are core special equipment in construction projects for the vertical transportation of personnel and materials. Their operating efficiency and safety protection directly affect the construction progress and the safety of workers. As a key protective component at the entrances and exits of construction hoists on each floor, the main function of the floor doors is to close the entrances and exits when the hoist is not stopped at the corresponding floor, preventing personnel or materials from falling from the floor edge. At the same time, it prevents unrelated personnel and debris from accidentally entering the hoist's operating track area, forming a safety isolation barrier between the hoist and the floor. It is an important line of defense for ensuring the safety of vertical transportation operations.

[0003] However, the current traditional construction hoist floor door protection structures have significant shortcomings: 1. Most adopt welded fixing or one-time simple assembly design, requiring on-site welding or multiple piecemeal assembly during installation, which not only consumes a lot of manpower and time, but also seriously affects construction efficiency; 2. These protective doors are mostly for single use, and are difficult to recycle after the project is completed, resulting in a huge waste of materials such as steel and wood, which does not conform to the concept of green construction; 3. Their bases often rely on simple cement nails for fixation, which is insufficient in protective strength. Under long-term use or when subjected to external impact, they are prone to deformation, loosening or even falling off, posing significant safety hazards; 4. Due to the differences in structural dimensions and entrance heights of different building floors, traditional floor doors lack universality and are difficult to flexibly adapt to the installation needs of different floors. They need to be customized for different floors, further increasing construction costs and management difficulties.

[0004] The above shortcomings need to be improved. Utility Model Content

[0005] In order to overcome the shortcomings of existing technologies, this utility model provides an external construction hoist floor door protection device.

[0006] The technical solution of this utility model is as follows: An externally mounted construction hoist floor door protection device includes a keel, a floor door, diagonal braces, and a perforated plate. The keel includes a main keel square tube, angle iron pre-welded to the main keel square tube, and hinges pre-installed on the main keel square tube. The angle iron is fixed to the edge of the floor structure with screws to achieve an external connection between the keel and the floor structure. The floor door is rotatably connected to the main keel square tube via the hinges. One end of the diagonal brace is fixed to the ground, and the other end is fixed to the main keel square tube, forming support for the keel. The perforated plate is detachably connected to the keel via edge clips to cover the outer side of the frame body formed by the keel.

[0007] According to the above-described scheme of this utility model, the main keel square tube has a size of 4cm×4cm×3mm thickness.

[0008] According to the above-described scheme of this utility model, the angle iron is pre-drilled with at least two fixing holes for inserting screws.

[0009] According to the above-described scheme of this utility model, the angle iron is an equilateral angle steel with a side length of 50mm and a side thickness of 3mm.

[0010] According to the above-described scheme of this utility model, the single size of the floor door is 0.7m × 1.8m, and a single floor is provided with 4 of the floor doors.

[0011] According to the above-described scheme of this utility model, the two ends of the diagonal brace are provided with cut surfaces, and the cut surfaces are welded with a base with 4 screw holes.

[0012] According to the above-described scheme of this utility model, one end of the diagonal brace is fixed to the ground by an expansion screw, and the other end is fixed to the main keel square tube by a bolt.

[0013] According to the above-described scheme of this utility model, the diagonal brace is a square tube structure, and the specifications of the diagonal brace are 2cm×2cm×2mm thick.

[0014] According to the above-described scheme of this utility model, the perforated plate is made of steel plate, and the hole diameter on the perforated plate is ≤10mm.

[0015] According to the above-described scheme of this utility model, a fixing plate is also welded onto the main keel square tube, and the fixing plate is perpendicular to the welding surface of the angle iron on the main keel square tube.

[0016] The advantages of this utility model according to the above-described solution include: 1. This utility model decomposes the floor door into four main structural components: keel, floor door, diagonal brace, and perforated plate. During on-site installation, only assembly and fixing are required, eliminating the need for complex processes such as welding, thus reducing installation difficulty. 2. This utility model uses hinges to connect the keel and the floor door, uses edge clips to connect the keel and the perforated plate, and uses screws to fix the keel, floor door, diagonal brace and perforated plate, so that the floor door protection device of this utility model can be disassembled after use and can be recycled. 3. This utility model uses angle iron to fix the keel, and uses diagonal bracing to transfer part of the load borne by the keel to the ground, thereby enhancing the structural stability and safety of the protective device. 4. This utility model adopts an external structural design, which uses expansion screws to directly fix the angle steel and keel to the edge of the floor structure. It does not need to adapt to the different structures such as the wall layout and beam position inside the floor. It can be fixed by simply using the common structural edge of each floor, and can adapt to different floor structures. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0018] Figure 1 This is a schematic diagram of the front structure of the floor door protection device of this utility model; Figure 2 This is a schematic diagram of the structure of the angle iron at the bottom of the keel of this utility model; Figure 3 A structural diagram of the main keel square tube and diagonal bracing; Figure 4 This is a schematic diagram of the base at both ends of the diagonal brace.

[0019] The following are the labeling elements in the figure: 1. Keel; 2. Floor door; 3. Diagonal brace; 4. Perforated plate; 5. Main keel square tube; 6. Angle iron; 7. Edge buckle; 8. Cut surface; 9. Base; 10. Screw hole; 11. Fixing plate; 12. Expansion screw. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] It should be noted that when a component is referred to as "fixed," "set," or "connected" to another component, it may be located directly or indirectly on that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first," "second," etc., are used for ease of description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "Many" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0022] See Figures 1 to 4 This utility model provides an externally mounted protective device for the floor door 2 of a construction hoist, including a keel 1, a floor door 2, a diagonal brace 3, and a perforated plate 4. The keel 1 includes a main keel square tube 5, an angle iron 6 pre-welded to the main keel square tube 5, and a hinge pre-installed on the main keel square tube 5. The angle iron 6 is fixed to the edge of the floor structure by screws to achieve an externally mounted connection between the keel 1 and the floor structure. The floor door 2 is rotatably connected to the main keel square tube 5 through the hinge. One end of the diagonal brace 3 is fixed to the ground, and the other end is fixed to the main keel square tube 5 to form support for the keel 1. The perforated plate 4 is detachably connected to the keel 1 through edge buckles 7 to cover the outer side of the frame body formed by the keel 1.

[0023] In fact, this utility model decomposes the floor door 2 into four main structural components: keel 1, floor door 2, diagonal brace 3, and perforated plate 4. During on-site installation, only assembly and fixing are required, without the need for complex processes such as welding, effectively reducing the installation difficulty. Furthermore, this utility model uses angle iron 6 to fix the keel 1 while using diagonal brace 3 to support the keel 1, transferring part of the load borne by the keel 1 to the ground, thereby enhancing the structural stability and safety of the protective device.

[0024] Specifically, the main keel square tube 5 in this utility model has a specification of 4cm×4cm×3mm thickness to provide sufficient bending and deformation resistance, bear the self-weight of the floor door 2 and the perforated plate 4 as well as the external impact during construction, and avoid the problem of easy deformation of traditional thin frames.

[0025] Furthermore, at least two fixing holes for screws are pre-drilled on the angle iron 6 to avoid the problem of easy loosening when fixed at a single point. Compared with traditional cement nail fixing, the anti-loosening ability can be greatly improved. In addition, the angle iron 6 is an equilateral angle steel with a uniform side length of 50mm and a side thickness of 3mm, so as to ensure the consistency of batch installation and facilitate subsequent turnover and reuse.

[0026] In practice, when using angle iron 6 to fix the keel 1, one side of angle iron 6 is fixed to the floor with screws, while the other side is pre-welded to the main keel square tube 5, forming a connecting carrier. This transforms the fixing relationship between the main keel square tube 5 and the floor into a welded connection between the angle iron and the main keel square tube 5, and a screw fixation between the angle iron and the floor. This avoids the instability problem when the main keel square tube 5 is directly connected to the floor, providing a reliable support foundation for the entire protective device. Furthermore, after the non-floor fixed surface of the angle iron is rigidly connected to the main keel square tube 5 through welding, the load of the main keel square tube 5 and the components above it can be evenly transferred to the angle iron surface fixed to the floor, and then transferred to the floor through screws, forming a complete force transmission path. This prevents the main keel square tube 5 from deforming or falling off due to load concentration, ensuring the overall stability of the protective device.

[0027] According to the above-described scheme of this utility model, the single-sheet size of the floor door 2 is 0.7m × 1.8m, and four floor doors 2 are provided for each floor. The surface of the floor door 2 is also printed with green paint to warn workers. In fact, the number of floor doors 2 is designed based on the number of cages in the construction hoist.

[0028] According to the above-described scheme of this utility model, the diagonal brace 3 is a square tube structure with dimensions of 2cm × 2cm × 2mm thickness. Both ends of the diagonal brace 3 have cut surfaces 8, and bases 9 with four screw holes 10 are welded to the cut surfaces 8. One end of the diagonal brace 3 is fixed to the ground with expansion screws, and the other end is fixed to the main keel square tube 5 with bolts. The diagonal brace 3 forms a triangular force-bearing structure, effectively resisting lateral external forces (such as personnel collisions and material scraping) and vertical loads (the weight of the door and perforated plate 4), preventing the keel 1 from tilting or overturning, thus addressing the shortcomings of traditional protective safety. Furthermore, the base 9 with screw holes 10 allows for more precise connection between the diagonal brace 3 and the ground and the main keel square tube 5, and the expansion screws can be used to fix the ground to accommodate different ground materials.

[0029] According to the above-described scheme of this utility model, the perforated plate 4 is made of steel plate, and the hole diameter on the perforated plate 4 is ≤10mm. The steel plate material has high strength, which can effectively prevent construction workers from falling and materials from falling; the design of hole diameter ≤10mm not only prevents small objects from passing through, but also ensures ventilation and light transmission, without affecting the view and air circulation inside and outside the building, thus solving the problems of poor visibility and stuffiness of traditional enclosed protection.

[0030] According to the above-described scheme of this utility model, a fixing plate 11 is also welded onto the main keel square tube 5. The fixing plate 11 is perpendicular to the welding surface of the angle iron 6 on the main keel square tube 5. The fixing plate 11 is installed on the exterior wall of the building by expansion screws 12. The vertically arranged fixing plate 11 and the angle iron 6 form a cross-shaped reinforcement structure, which can distribute the force on the main keel square tube 5 in the horizontal and vertical directions, prevent the main keel square tube 5 from twisting or deforming locally due to excessive force on one side, and further improve the durability of the overall structure. In addition, the fixing plate 11 can help transfer the load of the main keel square tube 5 to the angle iron 6 or the diagonal brace 3, reduce the stress concentration of the main keel square tube 5 itself, extend the service life of the components, and reduce safety hazards during long-term use.

[0031] In fact, this utility model uses hinges to connect the keel 1 and the floor door 2, edge clips 7 to connect the keel 1 and the perforated plate 4, and screws to fix the keel 1, floor door 2, diagonal brace 3, and perforated plate 4. This allows the floor door protection device of this utility model to be disassembled after use and reused repeatedly. Furthermore, this utility model adopts an external structural design, using expansion screws 12 to directly fix the angle steel and keel 1 to the edge of the floor structure. It does not require adaptation to the different structural features of the internal walls and beam positions of the floors; it only needs to utilize the common structural edges of each floor to complete the fixation, thus adapting to different floor structures.

[0032] 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. An externally mounted construction hoist floor door protection device, characterized in that, Includes keel, floor doors, diagonal braces, and perforated plates; The keel includes a main keel square tube, angle iron pre-welded to the main keel square tube, and hinges pre-installed on the main keel square tube. The angle iron is fixed to the edge of the floor structure by screws to realize the external connection between the keel and the floor structure. The floor door is rotatably connected to the main keel square tube via the hinge; One end of the diagonal brace is fixed to the ground, and the other end is fixed to the main keel square tube, forming a support for the keel; The perforated plate is detachably connected to the keel via edge clips to cover the outer side of the frame body formed by the keel.

2. The external construction hoist floor door protection device according to claim 1, characterized in that, The main keel square tube has a size of 4cm × 4cm × 3mm thickness.

3. The external construction hoist floor door protection device according to claim 1, characterized in that, The angle iron has at least two pre-drilled fixing holes for screws to pass through.

4. The floor door protection device for the external construction hoist according to claim 1, characterized in that, The angle iron is an equilateral angle steel with a side length of 50mm and a side thickness of 3mm.

5. The externally mounted construction hoist floor door protection device according to claim 1, characterized in that, Each floor door measures 0.7m x 1.8m, and four such floor doors are provided for each floor.

6. The external construction hoist floor door protection device according to claim 1, characterized in that, The diagonal brace has cut surfaces at both ends, and a base with four screw holes is welded to the cut surfaces.

7. The external construction hoist floor door protection device according to claim 6, characterized in that, One end of the diagonal brace is fixed to the ground with an expansion bolt, and the other end is fixed to the main keel square tube with a bolt.

8. The external construction hoist floor door protection device according to claim 1, characterized in that, The diagonal brace is a square tube structure, and its dimensions are 2cm × 2cm × 2mm thick.

9. The external construction hoist floor door protection device according to claim 1, characterized in that, The perforated plate is made of steel, and the hole diameter on the perforated plate is ≤10mm.

10. The externally mounted construction hoist floor door protection device according to claim 1, characterized in that, A fixing plate is also welded onto the main keel square tube, and the fixing plate is perpendicular to the welding surface of the angle iron on the main keel square tube.

Images