Modular hot-dip galvanized steel stair

Abstract

The utility model relates to related technical field of stair, especially modular hot galvanizing steel stair, including base, the upper surface fixed mounting of base has the support, the upper end fixed mounting of support has the platform, the lower end fixed mounting of platform has the fixed plate, the upper end of base is provided with first locating plate, both ends of first locating plate all are fixedly connected with first bolt and penetrate through, the upper end of base is provided with floor, the upper end of floor is provided with second locating plate, the upper end fixed connection of second locating plate has second bolt, the upper end fixed mounting of second locating plate has the stand, the upper end fixed mounting of stand has the handrail, the open grid structure of step ensures that rainwater, flush water instantaneous emptying, all steel components carry out integral hot dip galvanizing treatment under factory environment, and the stair is prefabricated in factory and is processed into the piece module convenient for transportation and hoisting, and is connected fixedly with hot galvanizing high -strength bolt on the spot.

Description

Technical Field

[0001] This utility model relates to the field of staircase technology, and in particular to modular hot-dip galvanized steel staircases. Background Technology

[0002] The technological evolution of modular staircases is driven by both the modernization of the construction industry and the need to adapt to complex working conditions. Its core technology lies in the deep integration of modular design concepts and prefabricated construction processes to upgrade construction efficiency. In the field of contemporary construction engineering, modular staircases rely on digital prefabrication production systems to disassemble the staircase structure into standardized prefabricated components such as stair section modules, platform units, and handrail components. Modular connection nodes such as bolt fastening and mortise and tenon interlocking are used to achieve rapid on-site assembly, which significantly enhances the safety and reliability of the staircase structure under heavy load conditions and highly corrosive environments.

[0003] Traditional welded stair treads are made of steel and are severely corroded, with some treads even rusting through. This poses a risk of falls for pedestrians. Solid treads are prone to water accumulation, which accelerates the electrochemical corrosion process, creating a vicious cycle. Frequent rust removal, repair, and replacement result in huge investments of manpower and resources and production downtime losses. The original structure has many welding points, and the welds and heat-affected zones are prone to corrosion. Furthermore, the quality of on-site welding is greatly affected by the environment. Utility Model Content

[0004] The purpose of this utility model is to provide a modular hot-dip galvanized steel staircase to solve the problems mentioned in the background art, such as severe corrosion of the steel substrate of traditional welded stair treads, with some treads even rusting through, posing a risk of falling for pedestrians, water accumulation in solid treads accelerating the electrochemical corrosion process and forming a vicious cycle, frequent rust removal, repair and replacement resulting in huge investment of manpower and material resources and production downtime losses, numerous welding points in the original structure, weld seams and heat-affected zones easily becoming corrosion entry points, and the on-site welding quality being greatly affected by the environment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular hot-dip galvanized steel staircase, comprising a base, a bracket fixedly installed on the upper surface of the base, a platform fixedly installed on the upper end of the bracket, a fixing plate fixedly installed on the lower end of the platform, a first positioning plate provided on the upper end of the base, with first bolts through and fixedly connected to both ends of the first positioning plate, a floor slab provided on the upper end of the base, a second positioning plate provided on the upper end of the floor slab, with second bolts fixedly connected to the upper end of the second positioning plate, a column fixedly installed on the upper end of the second positioning plate, a railing fixedly installed on the upper end of the column, a third positioning plate provided at the front end of the floor slab, with third bolts through and fixedly connected to both ends of the third positioning plate, a fourth positioning plate provided at the front end of the floor slab, with fourth bolts through and fixedly connected to both ends of the fourth positioning plate, steps fixedly installed on the upper end of the fourth positioning plate, a guardrail fixedly installed on the upper end of the platform, and a guardrail provided on the upper end of the guardrail.

[0006] Preferably, the first positioning plate has a threaded hole, and the first positioning plate and the first bolt are locked together by a threaded connection. The base and the floor are connected by the first positioning plate.

[0007] Preferably, the second positioning plate has a threaded hole, and the second positioning plate and the second bolt are locked together by a threaded connection. The floor slab and the column are connected by the second positioning plate.

[0008] Preferably, the third positioning plate has a threaded hole, and the third positioning plate and the third bolt are locked together by a threaded connection. The floor slab and the fixing plate are connected by the third positioning plate.

[0009] Preferably, the fourth positioning plate has a through hole, and the fourth bolt passes through the through hole and is locked by a nut, and the floor slab and the steps are connected through the fourth positioning plate.

[0010] Preferably, the steps adopt an open grid structure.

[0011] Preferably, a shock-absorbing pad is fixedly installed at the lower end of the bracket, and a rubber pad is fixedly installed at the lower end of the floor slab.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This modular hot-dip galvanized steel staircase replaces traditional solid steel plates with its treads. Its open grid structure ensures that rainwater and washing water are drained instantly, eliminating the corrosive environment caused by water accumulation at the source. It also reduces the structural weight and enhances anti-slip performance. The railings use profiles and steel plates with a thickness of ≥1cm, improving the durability and impact resistance of key protective components. The entire structure is hot-dip galvanized; all steel components undergo overall hot-dip galvanizing treatment in a factory environment. This process forms a dense, metallurgically bonded zinc-iron alloy layer on the surface of the steel substrate. The zinc layer acts as a sacrificial anode, providing superior performance. The process begins with corrosion to protect the base steel. Even with minor damage to the surface zinc layer, the protective effect continues. The dense zinc layer effectively isolates the steel from direct contact with corrosive media. The staircase is prefabricated in the factory into modular sections for easy transport and hoisting. On-site, hot-dip galvanized high-strength bolts are used for connection and fixation, completely avoiding the risks of heat-affected zone corrosion, quality fluctuations, and hot work operations associated with on-site welding. The bolt connection method maximizes the integrity of the factory hot-dip galvanized layer and avoids damage to the coating caused by on-site welding. For parts that inevitably need to be welded to embedded civil engineering components, strict coating protection is implemented. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0014] Figure 2 This is a schematic diagram of the interlocking structure of the floor slab and railing of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the floor slab and platform of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the floor slab and steps of this utility model.

[0017] In the diagram: 1. Base; 2. Bracket; 3. Platform; 4. Fixing plate; 5. First positioning plate; 6. First bolt; 7. Floor slab; 8. Second positioning plate; 9. Second bolt; 10. Column; 11. Railing; 12. Third positioning plate; 13. Third bolt; 14. Fourth positioning plate; 15. Fourth bolt; 16. Step; 17. Guardrail; 18. Guardrail; 19. Shock-absorbing pad; 20. Rubber pad. Detailed Implementation

[0018] 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 protection scope of the present utility model.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a modular hot-dip galvanized steel staircase, including a base 1, a bracket 2 fixedly installed on the upper surface of the base 1, a platform 3 fixedly installed on the upper end of the bracket 2, a fixing plate 4 fixedly installed on the lower end of the platform 3, a first positioning plate 5 provided on the upper end of the base 1, and a first bolt 6 through and fixedly connected to both ends of the first positioning plate 5, a floor slab 7 provided on the upper end of the base 1, a second positioning plate 8 provided on the upper end of the floor slab 7, and a second bolt 9 fixedly connected to the upper end of the second positioning plate 8. A column 10 is fixedly installed on the upper end of the positioning plate 8, and a railing 11 is fixedly installed on the upper end of the column 10. A third positioning plate 12 is provided at the front end of the floor slab 7. Both ends of the third positioning plate 12 are fixedly connected with third bolts 13. A fourth positioning plate 14 is provided at the front end of the floor slab 7. Both ends of the fourth positioning plate 14 are fixedly connected with fourth bolts 15. A step 16 is fixedly installed on the upper end of the fourth positioning plate 14. A guard plate 17 is fixedly installed on the upper end of the platform 3, and a guardrail 18 is provided on the upper end of the guard plate 17.

[0020] Furthermore, the first positioning plate 5 has threaded holes, and the first positioning plate 5 and the first bolt 6 are locked together by a threaded connection. The base 1 and the floor slab 7 are connected by the first positioning plate 5. The first positioning plate 5 enables modular fastening of the base 1 and the floor slab 7, and the all-bolt assembly design avoids damage to the hot-dip galvanized layer caused by on-site welding.

[0021] Furthermore, the second positioning plate 8 has threaded holes, and the second positioning plate 8 and the second bolt 9 are locked together by a threaded connection. The floor slab 7 and the column 10 are connected by the second positioning plate 8. The floor slab 7 provides a stable support platform for the column 10 and the step 16, and the modular disassembly enables rapid on-site assembly.

[0022] Furthermore, the third positioning plate 12 has threaded holes, and the third positioning plate 12 and the third bolt 13 are locked together by a threaded connection. The floor slab 7 and the fixing plate 4 are connected by the third positioning plate 12. Through the function of the fixing plate 4, it serves as a rigid connection component between the platform 3 and the floor slab 7, not only providing support for the platform 3 from below, but also enhancing the overall structure's resistance to horizontal loads through the all-bolted connection structure.

[0023] Furthermore, the fourth positioning plate 14 has through holes, and the fourth bolt 15 passes through the through holes and is locked by nuts. The floor slab 7 and the step 16 are connected by the fourth positioning plate 14. The modular fixing of the floor slab 7 and the step 16 is achieved by setting the fourth positioning plate 14, which not only ensures the lateral positioning accuracy of the step 16 installation, but also facilitates the quick replacement and maintenance of individual steps 16 in the later stage through the detachable connection design.

[0024] Furthermore, step 16 adopts an open grid structure, which allows rainwater and debris to drain quickly, effectively avoiding the problem of water accumulation and corrosion of solid step 16.

[0025] Furthermore, a shock-absorbing pad 19 is fixedly installed at the lower end of the bracket 2, and a rubber pad 20 is fixedly installed at the lower end of the floor slab 7. Through the setting of the rubber pad 20, its elastic deformation capability can effectively adapt to the installation requirements of uneven environment and simultaneously absorb low-frequency vibration of structure.

[0026] Working principle: First, the main structure of the staircase, including the support frame 2, platform 3, column 10, and steps 16, is prefabricated in the factory according to standardized modules. All steel components undergo hot-dip galvanizing to form a dense zinc-iron alloy layer, which isolates corrosive media through a sacrificial anode protection mechanism. During on-site installation, the base 1 is fastened to the floor slab 7 via the threaded connection of the first positioning plate 5 and the first bolt 6. The floor slab 7 is rigidly connected to the third positioning plate 12 and the third bolt 13 via the fixing plate 4 to form a stable support. The column 10 is vertically fixed to the floor slab 7 via the second positioning plate 8 and the second bolt 9. The railing 11 and the guardrail 18 complete the anti-corrosion... The protective structure is assembled, and the step 16 is fixed to the floor slab 7 by the fourth positioning plate 14 and the fourth bolt. Its open grid structure allows rainwater and debris to drain quickly during use, avoiding water accumulation and corrosion. At the same time, the hollow design enhances the surface friction and improves the anti-slip performance. The shock-absorbing pad 19 at the lower end of the bracket 2 and the rubber pad 20 at the lower end of the floor slab 7 absorb vibration and compensate for the ground height difference through elastic deformation, adapting to the installation requirements of uneven environments. The fully bolted assembly connection completely avoids on-site welding, protects the integrity of the hot-dip galvanized layer, and the detachable modular design facilitates the quick replacement and maintenance of individual components such as steps and railings in the future.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular hot-dip galvanized steel staircase, including a base (1), characterized in that: A bracket (2) is fixedly installed on the upper surface of the base (1). A platform (3) is fixedly installed on the upper end of the bracket (2). A fixing plate (4) is fixedly installed on the lower end of the platform (3). A first positioning plate (5) is provided on the upper end of the base (1). A first bolt (6) is fixedly connected through both ends of the first positioning plate (5). A floor slab (7) is provided on the upper end of the base (1). A second positioning plate (8) is provided on the upper end of the floor slab (7). A second bolt (9) is fixedly connected to the upper end of the second positioning plate (8). A column is fixedly installed on the upper end of the second positioning plate (8). (10) A railing (11) is fixedly installed at the upper end of the column (10). A third positioning plate (12) is provided at the front end of the floor slab (7). A third bolt (13) is fixedly connected through both ends of the third positioning plate (12). A fourth positioning plate (14) is provided at the front end of the floor slab (7). A fourth bolt (15) is fixedly connected through both ends of the fourth positioning plate (14). A step (16) is fixedly installed at the upper end of the fourth positioning plate (14). A guard plate (17) is fixedly installed at the upper end of the platform (3). A guardrail (18) is provided at the upper end of the guard plate (17).

2. The modular hot-dip galvanized steel staircase according to claim 1, characterized in that: The first positioning plate (5) has a threaded hole. The first positioning plate (5) and the first bolt (6) are locked together by a threaded connection. The base (1) and the floor slab (7) are connected by the first positioning plate (5).

3. The modular hot-dip galvanized steel staircase according to claim 1, characterized in that: The second positioning plate (8) has a threaded hole. The second positioning plate (8) and the second bolt (9) are locked together by a threaded connection. The floor slab (7) and the column (10) are connected by the second positioning plate (8).

4. The modular hot-dip galvanized steel staircase according to claim 1, characterized in that: The third positioning plate (12) has a threaded hole. The third positioning plate (12) and the third bolt (13) are locked together by a threaded connection. The floor slab (7) and the fixing plate (4) are connected by the third positioning plate (12).

5. The modular hot-dip galvanized steel staircase according to claim 1, characterized in that: The fourth positioning plate (14) has a through hole, and the fourth bolt (15) passes through the through hole and is locked by a nut. The floor slab (7) and the step (16) are connected through the fourth positioning plate (14).

6. The modular hot-dip galvanized steel staircase according to claim 1, characterized in that: The step (16) adopts an open grid structure.

7. The modular hot-dip galvanized steel staircase according to claim 1, characterized in that: The lower end of the bracket (2) is fixedly installed with a shock-absorbing pad (19), and the lower end of the floor slab (7) is fixedly installed with a rubber pad (20).

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