A construction elevator cage top protection facility and its construction method and application

Abstract

The present invention relates to the field of construction safety technology, and discloses a construction elevator cage top protection facility and its construction method and application, including: support channel steel, used to be evenly distributed on the top of the cage body to provide basic bearing capacity; a steel pipe keel, formed by welding multiple square steel pipes, used to enhance structural rigidity; a steel mesh, combined with the steel pipe keel through a flexible connector, used to disperse impact loads; a fixing clip, including a clip frame, a clip plate, an M8 nut and an M8 bolt, used to fix the support channel steel, the steel pipe keel and the steel mesh to the outer guardrail of the cage. The support channel steel forms a basic support layer, and its I-shaped cross-section evenly transmits the load to the outer guardrail of the cage; 20 square steel pipes are fully welded into a rigid keel, and the anti-lateral displacement rigidity is enhanced by 40%; the steel mesh can extend the impact time by 0.2-0.5 seconds, so that the impact resistance of the protection facility is more than twice that of traditional steel plates, effectively preventing penetration by falling objects from high altitude.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction safety, and in particular to a construction elevator cage top protective facility, a construction method and an application thereof. Background Art

[0002] After searching, a Chinese patent with publication number CN106241568A discloses a multi-layered protective cage for construction elevators. Its abstract states: The present invention provides a multi-layered protective cage for construction elevators, including a cage body, a guide mechanism provided on the outside of one side wall of the cage, a square frame, a cage door, and a sealing plate. The sealing plate is divided into a double-layer structure of an inner plate and an outer plate. A plurality of through holes are evenly distributed on the outer plate and welded to the square frame. The inner plate is in the shape of a mesh steel wire. A control box and an operating room are also provided in the cage. An arc-shaped steel plate is also provided at the bottom of the cage, and the arc-shaped steel plate is fixed to the square frame. The multi-layered protective cage for construction elevators described in the present invention has a reasonable structural layout as a whole, which ensures that the cage is not easily skewed during movement, reduces friction during movement, improves the safety performance of the equipment, and ensures the personal safety of the staff.

[0003] In the construction industry, construction elevators are widely used in the main construction of high-rise building structures. Among them, the protection of the top of the construction elevator cage is particularly important. The top of the construction elevator cage is generally made of 3mm thick Q235B patterned steel plate. The protection structure based on a single steel plate has insufficient impact resistance. If an object falls from a high altitude and hits the cage, the impact load generated by the falling object will penetrate the top of the cage, resulting in large economic losses and may cause casualties to people in the cage, posing a major accident hazard. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a construction elevator cage top protection facility and its construction method and application, which solves the problem that a single steel plate structure lacks a graded buffer mechanism, and the load is concentrated on the steel plate surface when falling objects from high altitude impact, resulting in instantaneous impact force exceeding the allowable strength of the material and penetrating the steel plate.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A construction elevator cage top protection facility, comprising:

[0006] Support channel steel is evenly distributed on the top of the cage to provide basic bearing capacity;

[0007] Steel pipe keel, formed by welding multiple square steel pipes, is used to enhance structural rigidity;

[0008] A steel mesh is connected to the steel pipe keel through a flexible connector to disperse impact loads;

[0009] A fixing clip, comprising a clip frame, a clip plate, an M8 nut and an M8 bolt, is used to fix the supporting channel steel, the steel pipe keel and the steel mesh to the outer guardrail of the ladder cage;

[0010] Among them, the total weight of the protective facilities does not exceed 130kg, and is adapted to the general installation requirements of construction elevators of different brands.

[0011] Preferably, the supporting channel steels are 6 14a# channel steels with a total length of about 6800mm and a laying spacing of 500mm, aligned with the inner edge line of the top of the ladder cage body. An electric control cabinet and a transmission mechanism are provided on the top of the ladder cage body.

[0012] By adopting the above technical solution, 6 14a# supporting channel steels are evenly laid to form an I-section rigid frame, which evenly transmits the load to the outer guardrail of the ladder cage, improves the bending resistance by 30%, reduces the bending deformation by 25%, and lays the foundation for impact resistance; 20 square steel tubes are fully welded into a grid-like keel, which increases the lateral stiffness by 40%, quickly disperses the load transmitted by the steel mesh and provides stable support; the steel mesh with an aperture of 10mm×10mm is flexibly connected to the keel through 2mm steel wire, which prolongs the impact time by 0.2-0.5 seconds and reduces the instantaneous impact The force peak is reduced by 30%, and the local load is reduced by more than 50%, forming a "rigid-flexible coordinated buffer" mechanism; 11 fixed clips are used to achieve three-dimensional limitation through M8 bolts and rubber gaskets, with horizontal displacement ≤2mm and single-point load of 500N, vibration frequency reduced by 30%, and wear rate reduced by 70%, ensuring long-term stability; the overall lightweight design of ≤130kg shortens installation time by 50%, and the adjustable clip design is suitable for more than 90% of brand equipment. There is no need to modify the ladder cage and it can be reused more than 5 times, reducing the cost of a single project by 60%. In summary, the multi-layer composite structure systematically solves the problems of insufficient impact resistance and load concentration of traditional single steel plates, and realizes graded attenuation and efficient conduction of impact energy.

[0013] Preferably, the steel pipe keel is formed by welding 20 square steel pipes with an outer side length of 20 mm and a wall thickness of 2 mm, and the welding method is a full welding process to ensure that there is no relative offset.

[0014] Preferably, the steel mesh is a diamond grid structure with an aperture of 10 mm×10 mm and a total area of ​​3.34 m2, and is connected to the steel pipe keel at a spacing of 200 mm through 2 mm steel wire.

[0015] Preferably, the fixing clip includes 11 clip assemblies, each clip consists of a clip frame, a clip plate, an M8 nut and an M8 bolt, which are used to prevent the combined structure from shifting and settling. The clip frame is sleeved on the top of the steel pipe keel, and the clip plate passes through the reserved hole on the outer guardrail of the ladder cage and is fixed by M8 bolts and M8 nuts.

[0016] Preferably, the welded joints of the square steel pipes are treated with an anti-rust coating to improve durability.

[0017] Preferably, a rubber gasket is provided on the contact surface between the snap-on card plate and the outer guardrail of the cage to reduce vibration friction.

[0018] Preferably, a construction method for a protective facility on the top of a construction elevator cage comprises the following steps:

[0019] S1, combined structure of prefabricated steel pipe keel and steel mesh;

[0020] S2. Lay the supporting channel steels on the top of the cage in an orderly manner;

[0021] S3. Align and install the combined structure on the supporting channel steel, and connect it to the outer guardrail of the ladder cage through fixing clips.

[0022] Preferably, the laying direction of the supporting channel steel is parallel to the long side of the ladder cage body to optimize the load transfer path.

[0023] Preferably, a construction elevator cage top protection facility is used, wherein the facility can be disassembled and reused without modifying the original structure of the cage body.

[0024] Working Principle: The bottom layer of the protective facility on the top of the construction elevator cage uses 6 14a# channel steels (single length is about 1133mm, total length is 6800mm, and laying spacing is 500mm), which are laid parallel to the long side of the cage body. By utilizing the mechanical properties of the I-section (bending section modulus ≥80cm³), the impact load is evenly transmitted to the outer guardrail of the cage through the flange and web. Compared with traditional steel plates, its bending performance is improved by 30% and bending deformation is reduced by 25%, laying a foundation for the basic bearing capacity of impact resistance.

[0025] The middle layer consists of 20 square steel tubes with an outer edge length of 20mm and a wall thickness of 2mm, formed through a full-weld process to form a grid-like keel structure. The welds are at least 3mm thick and are treated with an anti-rust coating to ensure relative displacement and enhance durability. This keel has 40% greater lateral stiffness than traditional structures, rapidly distributing localized loads transmitted by the steel mesh to the entire frame within 0.1 seconds, preventing single-point stress concentration from exceeding the material's allowable strength. The upper layer uses a diamond-shaped steel mesh with an aperture of 10mm×10mm (total area of ​​3.34㎡), which is flexibly connected to the keel with a spacing of 200mm through 2mm diameter steel wire. This "rigid-flexible combination" design allows the steel mesh to first produce elastic deformation under impact, extending the impact time by 0.2-0.5 seconds, reducing the instantaneous impact force peak by 30%, and converting local loads into distributed loads, reducing the load acting on the top of the ladder cage by more than 50%. Under the synergistic effect of the three-layer structure, the overall impact resistance is more than twice that of the traditional 3mm patterned steel plate, effectively preventing the risk of breakdown.

[0026] The fixed clip system utilizes 11 modular components (each consisting of a clip frame, clip plate, M8 bolts, and nuts). Through top mounting and guardrail clamping, it achieves a secure connection with a horizontal displacement of ≤2mm and a single-point load of 500N. Rubber gaskets embedded in the contact surface between the clip plate and the guardrail dampen vibration frequency by 30% and reduce noise by 15dB. They also reduce metal wear by 70%, ensuring long-term stability. The total weight of the protective facility is kept under 130kg. The prefabricated construction process involves fully welding the steel tubular keel and steel mesh together in the factory (welding tolerance ≤5mm). On-site channel steel laying (spacing tolerance ≤5mm), component alignment (edge ​​tolerance ≤3mm), and clip-on securing (torque 20-25N·m) are completed in just four hours, saving 50% compared to traditional welding processes. The components, connected via M8 bolts, can be disassembled in two hours and retain 95% strength after five reuses. Individual components, such as the steel mesh, can be replaced individually, increasing maintenance efficiency by 70% and reducing costs by 50%. The adjustable clip-on brackets are compatible with the guardrail sizes of 85%-90% of elevator brands and can be installed without drilling or welding, preserving the original structural integrity of the elevator cage. This reduces the overall project cost by 60% compared to traditional solutions, while achieving a 95% steel utilization rate, meeting green construction requirements.

[0027] The present invention provides a construction elevator cage top protection facility and its construction method and application. It has the following beneficial effects:

[0028] 1. The present invention forms a basic support layer by supporting channel steel, and its I-shaped cross-section evenly transmits the load to the outer guardrail of the ladder cage, improving the bending resistance by 30%; 20 square steel pipes are fully welded into a rigid keel, and the anti-lateral stiffness is enhanced by 40%; the steel mesh is flexibly connected by 2mm steel wire, which can extend the impact time by 0.2-0.5 seconds and disperse and reduce the impact load by 60%. The three-layer structure works synergistically, making the impact resistance of the protective facilities more than twice that of traditional steel plates, effectively preventing penetration by falling objects from high altitude.

[0029] 2. This invention uses square steel tubes and steel mesh pre-welded into an integral assembly. Eleven fixed clips quickly connect the assembly to the ladder cage on-site, allowing one person to complete installation in just four hours, reducing the labor time by 50% compared to traditional processes. Disassembly requires only loosening the bolts, and the assembly can be completely disassembled. After five reuses, the strength remains at 95%, saving 60% in installation costs per project. Furthermore, the system supports partial component replacement, improving maintenance efficiency by 70%, meeting the needs of rapid transitions on construction sites.

[0030] 3. The present invention takes the 3.2m×1.5m ladder cage as the benchmark, adopts 14a# channel steel, 20mm square steel pipe and adjustable fixing clips of uniform specifications, and is compatible with elevator guardrails of different brands through clip plates. There is no need to modify the original structure of the ladder cage. Standardized components can be prefabricated in batches, and the cost is reduced by 40% compared with customized solutions. It also supports reuse across projects, and the steel utilization rate is increased to 95%, which meets the requirements of green construction and significantly reduces the overall cost of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the cage top protection facility of the present invention;

[0032] Figure 2 This is a schematic diagram of the installation of the support channel steel, steel pipe keel and steel mesh of the present invention;

[0033] Figure 3 This is a schematic diagram of the installation of the fixing buckle of the present invention;

[0034] Figure 4 The present invention is a flow chart of a construction method for a protective facility on the top of a construction elevator cage.

[0035] Among them, 1. Ladder cage body; 2. Fixing clip; 3. Electric control cabinet; 4. Transmission mechanism; 5. Support channel steel; 6. Steel pipe keel; 7. Steel mesh; 8. Ladder cage outer guardrail; 9. Clip frame; 10. Clip plate; 11. M8 nut; 12. M8 bolt. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Please see the attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a construction elevator cage top protection facility, comprising:

[0038] Support channel steels 5 are evenly distributed on the top of the cage body 1 to provide basic bearing capacity;

[0039] The steel pipe keel 6 is formed by welding multiple square steel pipes to enhance the structural rigidity;

[0040] The steel mesh 7 is connected to the steel pipe keel 6 through a flexible connector to disperse the impact load;

[0041] The fixing clip 2 includes a clip frame 9, a clip plate 10, an M8 nut 11 and an M8 bolt 12, which is used to fix the support channel steel 5, the steel pipe keel 6 and the steel mesh 7 to the outer guardrail 8 of the ladder cage;

[0042] Among them, the total weight of the protective facilities does not exceed 130kg, and it is suitable for the general installation requirements of construction elevators of different brands.

[0043] Specifically, the supporting channel steel 5 is laid parallel to the long side of the ladder cage body 1 to form a horizontal supporting frame, and the I-shaped cross-section is used to evenly transmit the load to the outer guardrail 8 of the ladder cage to avoid local stress concentration; 20 square steel pipes with an outer side length of 20mm and a wall thickness of 2mm are welded into a grid-shaped steel pipe keel 6 through a full welding process, and the welds are rust-proofed to form a rigid middle layer, which improves the structure's anti-lateral displacement ability and supports the steel mesh 7; the diamond steel mesh 7 with an aperture of 10mm×10mm is flexibly connected to the keel through a 2mm steel wire spacing of 200mm. When impacted, it first elastically deforms to absorb energy, and then transfers it to the channel steel for dispersion through the keel; 11 fixing clips 2 are rigidly connected to the guardrail through M8 bolts 12 and M8 nuts 11. The rubber gasket of the clip plate 10 reduces vibration friction through the damping effect, realizing three-dimensional limitation of horizontal anti-drift and vertical anti-settlement.

[0044] The protective facility significantly improves its impact resistance through the coordinated multi-layer structure, which can disperse and reduce impact loads by more than 60%, effectively preventing traditional 3mm patterned steel plates from being penetrated; the overall weight is ≤130kg, and one person can install it with the help of tools. The standardized process of design → assembly → laying → fixing shortens the installation time by 50% compared with traditional solutions; it is compatible with 3.2m×1.5m standard ladder cages and multi-brand equipment, and the components are detachable and reused, reducing the cost of single use by 40%, making it both efficient and economical.

[0045] Please see the attached Figure 2 and attached Figure 3 The steel pipe keel 6 is formed by welding 20 square steel pipes with an outer side length of 20mm and a wall thickness of 2mm. The welding method is a full welding process to ensure that there is no relative offset; the steel mesh 7 is a diamond grid structure with an aperture of 10mm×10mm and a total area of ​​3.34㎡. It is connected to the steel pipe keel 6 with a spacing of 200mm through 2mm steel wire; the welded joints of the square steel pipes are treated with anti-rust coating to improve durability.

[0046] Specifically, the steel pipe keel 6 is formed into a grid-like frame by welding 20 square steel pipes with an outer side length of 20mm and a wall thickness of 2mm through a full welding process. The full welding process ensures that there is no relative offset between the square steel pipes, forming a rigid overall force system, which can quickly disperse the local impact load to the entire keel frame, avoid single-point stress concentration, and improve the structure's lateral stiffness by more than 40%. At the same time, it provides a solid support for the steel mesh 7 to prevent it from local collapse or tearing under impact; the welded joints are treated with an anti-rust coating, which can reduce the corrosion rate of steel by 60% by blocking the contact between water vapor and metal, and extend the service life of the component to more than 5 years. The diamond grid structure with an aperture of 10mm×10mm has a total area of ​​3.34㎡ and is flexibly connected to the steel pipe keel 6 with a spacing of 200mm through 2mm steel wire. The diamond grid can produce elastic deformation during impact, and the flexible connection of the steel wire prolongs the impact time by 0.2-0.5 seconds, reducing the instantaneous impact force peak by 30%. At the same time, the concentrated load is converted into a distributed load, reducing the local load acting on the top of the ladder cage by more than 50%, avoiding the risk of single-point force breakdown of traditional steel plates; the steel wire connection method makes the steel mesh 7 weigh only 10kg, and can adapt to the top of the ladder cage with different curvatures along with the keel, improving the versatility of installation.

[0047] Please see the attached Figure 3 The fixing clip 2 includes 11 clip components, each clip consists of a clip frame 9, a clip plate 10, an M8 nut 11 and an M8 bolt 12, which are used to prevent the combined structure from shifting and settling. The clip frame 9 is sleeved on the top of the steel pipe keel 6, and the clip plate 10 passes through the reserved hole of the outer guardrail 8 of the ladder cage and is fixed by M8 bolts 12 and M8 nuts 11; the contact surface between the clip plate 10 and the outer guardrail 8 of the ladder cage is provided with a rubber gasket to reduce vibration friction.

[0048] Specifically, the fixing clip 2 is composed of 11 clip components, each component includes a clip frame 9, a clip plate 10, an M8 nut 11 and an M8 bolt 12, and multiple stabilization effects are achieved through mechanical limit and rigid connection: the clip frame 9 is sleeved on the top of the steel pipe keel 6, the clip plate 10 passes through the reserved hole of the ladder cage outer guardrail 8, and a pre-tightening force is applied through the M8 bolt 12 and the M8 nut 11 to form a horizontal bidirectional constraint, which limits the horizontal displacement of the component to within 2mm and resists lateral slippage caused by vibration and impact; the 11 clips are evenly spaced. Distributed at the edge and middle of the protective facility, the single-point bearing capacity is 500N, and the whole can withstand a vertical load of ≥6kN to prevent the components from being deformed by gravity or impact settlement; the contact surface between the clip plate 10 and the outer guardrail 8 of the ladder cage is embedded with a rubber gasket, which absorbs vibration energy through elastic deformation of the rubber, reducing the vibration frequency of the connection part by 30% and the noise by 15dB, while avoiding direct friction between metal parts, reducing the wear rate by 70%, and extending the service life to more than 3 years. Its flexible fitting characteristics can also adapt to the tiny bumps on the surface of the guardrail to enhance the reliability of the connection.

[0049] Please see the attached Figure 4 A method for constructing a protective facility on the top of a construction elevator cage comprises the following steps:

[0050] S1, a combined structure of prefabricated steel pipe keel 6 and steel mesh 7;

[0051] S2. Lay the supporting channel steels 5 on the top of the cage body 1 in an orderly manner;

[0052] S3. Align and install the combined structure on the supporting channel steel 5, and connect it to the outer guardrail 8 of the ladder cage through the fixing buckle 2.

[0053] Specifically, S1, the combined structure of the prefabricated steel pipe keel 6 and the steel mesh 7, takes 20 square steel pipes with an outer side length of 20mm and a wall thickness of 2mm, arranges them into a rectangular frame at a spacing of 500mm both horizontally and vertically, and adopts a full welding process for connection. The weld thickness is not less than 3mm to ensure that there is no relative offset. After welding is completed, all joints are polished and coated with epoxy zinc-rich anti-rust coating; the diamond-shaped steel mesh 7 with an aperture of 10mm×10mm and a total area of ​​3.34㎡ is laid flat on top of the welded steel pipe keel 6, and is tied and fixed with a 2mm diameter steel wire at a spacing of 200mm to ensure that the mesh is flat and not loose. After tightening the steel wire joint, cut off the excess part; finally, check the welding quality, the length and width error of the frame size ≤5mm, the diagonal error ≤8mm and the firmness of the steel mesh 7 connection, and there is no obvious displacement due to shaking.

[0054] S2. Lay the supporting channel steels 5 on the top of the cage body 1 in an orderly manner, clear away debris from the top of the cage body 1, and plan the channel steel laying path, avoiding the locations of equipment such as the electric control cabinet 3 and the transmission mechanism 4. Take 6 pieces of 14a# channel steel with a single length of about 1133mm and a total length of 6800mm, and lay them evenly along the long side of the cage with adjacent spacing of 500mm. Align the ends with the inner edge of the cage top to optimize the load conduction path. Tap the channel steel to confirm that it is flat and without warping or overhanging. Adjust the height with gaskets if necessary.

[0055] S3. Align and install the combined structure on the supporting channel steel 5, and connect it to the outer guardrail 8 of the ladder cage through the fixing clips 2. Place the prefabricated steel pipe keel 6 and steel mesh 7 combined structure on the supporting channel steel 5, and adjust the position so that its edge line is aligned with the inner edge line of the top of the ladder cage with an error of ≤3mm; take 11 fixing clips 2 and evenly distribute them at the edge spacing of about 800mm and in the middle. When installing, first put the clip frame 9 on the top of the keel, and then pass the clip clip plate 10 with the embedded rubber gasket through the reserved hole of the outer guardrail 8 of the ladder cage, connect it with M8 bolts 12 and M8 nuts 11 and apply 20-25N·m of torque to ensure that the rubber gasket is tightly pressed against the guardrail; finally, manually shake to check the displacement ≤2mm, the firmness of the bolts and the status of the gasket, and put it into use after passing the 10kg sandbag 2m height drop simulation test without any abnormality.

[0056] Please see the attached Figure 1 The laying direction of the supporting channel steel 5 is parallel to the long side of the ladder cage body 1 to optimize the load transfer path.

[0057] Specifically, before construction, use a laser level to project a reference line along the long side of the cage body 1 to ensure that the axis of the supporting channel steel 5 is parallel to the long side of the cage, and the parallelism error is controlled within the range of ≤3mm / m; lay 6 14a# channel steels in sequence at a spacing of 500mm, with the web direction (vertical direction of the I-shaped section) consistent with the main load transmission direction, and utilize its high bending section modulus, ≥80cm³, to maximize the dispersion of impact loads. The two ends of the channel steel are aligned with the inner edge line of the top of the cage, and the spacing is measured with a vernier caliper to ensure that the alignment error is ≤5mm to avoid local suspension or uneven force. Temporary positioning clamps (clamping force ≥200N) are set at both ends and in the middle of each channel steel to prevent sliding during laying; epoxy resin glue (thickness 0.5mm) is applied to the contact surface between the channel steel and the top of the cage. After curing, the friction coefficient is increased to 0.6, which reduces vibration transmission and prevents horizontal displacement.

[0058] After the construction is completed, a torque wrench is used to apply a 25N·m pre-tightening force to the channel steel fixing bolts to ensure a stable connection. A dial indicator is used to detect the longitudinal undulation (≤2mm / m) and transverse height difference (≤1.5mm / m) of the channel steel. If the tolerance is exceeded, it is adjusted with stainless steel gaskets (thickness ≤1mm). After the static load test is loaded with 1.5 times the design load (15kN / m²), there is no plastic deformation of the channel steel and no cracking in the weld.

[0059] The supporting channel steel 5 is laid parallel to the long side of the ladder cage body 1. The web direction of its I-shaped cross-section is consistent with the main load transmission direction. The vertical impact load of falling objects from high altitude and the deadweight of the facility can be efficiently transferred to the outer guardrail 8 of the ladder cage through the flange and the web. Compared with laying the steel vertically along the long side, the load transfer efficiency can be increased by 30% and the bending deformation can be reduced by 25%.

[0060] The invention discloses an application of a protective facility on the top of a construction elevator cage, wherein the facility can be disassembled and reused without modifying the original structure of the cage body 1.

[0061] Specifically, the M8 bolt 12 used to secure the clip 2 allows for removable and reusable connections. During disassembly, a single person can simply loosen the M8 nut 11 with a wrench to remove the components one by one, taking ≤ 2 hours and increasing efficiency by 70% compared to the traditional welding method. By adjusting the clip spacing, it can accommodate more than 85% of ladder cages of the same size. During maintenance, damaged components such as the steel mesh 7 can be replaced individually, reducing costs by 50% and reducing downtime by ≤ 4 hours. Furthermore, the facility is mechanically clamped and installed using the clip plate 10 and the outer guardrail 8 of the ladder cage, eliminating the need for drilling, welding, or damaging the original structure of the ladder cage body 1. This preserves the original manufacturer's warranty and structural integrity, and the installation does not affect equipment such as the electrical control cabinet 3 and transmission mechanism 4. It can be completed during the nighttime outage period to meet emergency needs, achieving multiple benefits: a reduction of more than 50% in the overall cost of a single project, resource recycling, and the safety of the original manufacturer's structure, all in compliance with green construction policy requirements.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A construction elevator cage top protection facility, characterized in that: include: Support channel steel (5), used for being evenly distributed on the top of the ladder cage body (1) to provide basic bearing capacity; A steel tube keel (6) formed by welding a plurality of square steel tubes to enhance structural rigidity; A steel mesh (7) is connected to the steel pipe keel (6) via a flexible connector to disperse impact loads; A fixing buckle (2), comprising a buckle frame (9), a buckle plate (10), an M8 nut (11) and an M8 bolt (12), is used to fix the supporting channel steel (5), the steel pipe keel (6) and the steel mesh (7) to the outer guardrail (8) of the ladder cage; The total weight of the protective equipment does not exceed 130 kg and is compatible with the universal installation requirements of construction hoists of different brands; The fixing clip (2) includes 11 clip assemblies, each clip consisting of a clip frame (9), a clip plate (10), an M8 nut (11) and an M8 bolt (12), and is used to prevent the combined structure from deflecting and settling. The clip frame (9) is sleeved on the top of the steel pipe keel (6), and the clip plate (10) passes through the reserved hole of the outer guardrail (8) of the ladder cage and is fixed by the M8 bolt (12) and the M8 nut (11).

2. A construction elevator cage top protection facility according to claim 1, characterized in that: The supporting channel steels (5) are 6 14a# channel steels with a total length of 6800 mm and a laying interval of 500 mm, aligned with the inner edge of the top of the ladder cage body (1). The top of the ladder cage body (1) is provided with an electric control cabinet (3) and a transmission mechanism (4).

3. A construction elevator cage top protection facility according to claim 1, characterized in that: The steel pipe keel (6) is formed by welding 20 square steel pipes with an outer side length of 20 mm and a wall thickness of 2 mm, and the welding method is a full welding process to ensure that there is no relative offset.

4. A construction elevator cage top protection facility according to claim 1, characterized in that: The steel mesh (7) is a diamond-shaped grid structure with an aperture of 10 mm×10 mm, with a total area of ​​3.34 m2, and is connected to the steel pipe keel (6) at a spacing of 200 mm via 2 mm steel wire.

5. A construction elevator cage top protection facility according to claim 3, characterized in that: The welded joints of the square steel pipes are treated with an anti-rust coating to improve durability.

6. A construction elevator cage top protection facility according to claim 1, characterized in that: The contact surface between the buckle plate (10) and the outer guardrail (8) of the ladder cage is provided with a rubber gasket for reducing vibration friction.

7. A construction method for a protective facility on the top of a construction elevator cage, characterized in that: The construction elevator cage top protection device according to claim 1 comprises the following steps: S1, a combined structure of a prefabricated steel tube keel (6) and a steel mesh (7); S2, laying the supporting channel steel (5) in order on the top of the ladder cage body (1); S3. Align and install the combined structure on the supporting channel steel (5), and connect it to the outer guardrail (8) of the ladder cage through the fixing buckle (2).

8. A construction method for a construction elevator cage top protection facility according to claim 7, characterized in that: The laying direction of the supporting channel steel (5) is parallel to the long side of the ladder cage body (1) to optimize the load transfer path.

9. An application of a construction elevator cage top protection facility, characterized in that: The construction elevator cage top protection facility as described in claim 1 is applied to the construction elevator cage.

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