Assembled construction steel stair used in assembled integral structure

Abstract

The utility model relates to the technical field of engineering construction, in particular to an assembled construction steel stair used in an assembled integral structure, a starting plate is fixed on one side of a structural beam through a steel bar anchoring component, one end of the starting plate is arranged on the side edge of the upper end of the structural beam, and meanwhile, a steel framework is arranged at the other end of the starting plate. A plurality of stair treads are evenly arranged at the upper end of the steel framework through fixing bolts and second connecting holes, handrails are arranged at the upper ends of the stair treads, and the lower ends of the handrails are fixedly connected with the starting plate and the steel framework through fixing bolts. According to the utility model, the fixing bolts and other connecting pieces are adopted for rapid installation, on-site welding is not needed, time and labor cost are saved, meanwhile, the height of the stair treads and the railing can be adjusted to adapt to different floor heights, namely the number of the stair treads can be increased or decreased according to actual needs to adapt to different building requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction, and particularly to a prefabricated construction steel staircase used in an assembled monolithic structure. Background Technique

[0002] With the development of modern construction technology, prefabricated buildings have been widely applied due to their high efficiency, environmental protection and other characteristics. Among them, steel structures, as one of the important components of prefabricated buildings, play a key role in various types of buildings. As a necessary component for connecting each floor slab, the construction steel staircase must be able to be quickly installed and disassembled while ensuring the safety of construction workers.

[0003] At present, most of the construction steel staircases on the market are installed by on-site welding or bolt connection. This method has the following deficiencies:

[0004] 1. Low installation efficiency: The traditional welding method takes a long time and affects the construction progress.

[0005] 2. Poor safety: The sparks generated during the welding process are likely to cause safety accidents such as fires.

[0006] 3. Poor reusability: The welded staircase is not easy to disassemble and is difficult to reuse.

[0007] 4. Weak environmental adaptability: It is greatly restricted by climatic conditions. For example, it is difficult to ensure the welding quality under low temperature conditions.

[0008] 5. High cost: Since professional welders are required for operation, the labor cost is relatively high.

[0009] In order to overcome the above problems, improve construction efficiency and safety, and reduce construction costs, there is an urgent need for a new type of prefabricated construction steel staircase at present. Content of the Utility Model

[0010] The purpose of the utility model is to provide a prefabricated construction steel staircase used in an assembled monolithic structure, so as to solve the problems put forward in the above background technique.

[0011] The technical solution of the utility model is: a prefabricated construction steel staircase used in an assembled monolithic structure, including a structural beam. One side of the structural beam is fixed with a starting plate through a steel bar anchoring component. One end of the starting plate is arranged at the upper side edge of the structural beam. At the same time, the other end of the starting plate is provided with a steel skeleton. The upper end of the steel skeleton is evenly provided with a plurality of stair treads through fixing pins and second connection holes. At the same time, a railing is arranged at the upper end of the stair treads. The lower end of the railing is fixedly connected with the starting plate and the steel skeleton through fixing pins.

[0012] Furthermore, the steel bar anchoring assembly includes a steel bar anchoring plate and bolts. The steel bar anchoring plate is arranged inside the structural beam, and the steel bar anchoring plate is arranged at the lower end of the starting plate. Meanwhile, the starting plate and the steel bar anchoring plate are fixedly connected by bolts.

[0013] Furthermore, the stair tread includes an L-shaped footrest. One side of the upper end of the L-shaped footrest is provided with a bending hole, and the lower end of the L-shaped footrest is provided with a bending piece. Adjacent two stair treads are connected by arranging the bending piece inside the bending hole.

[0014] Furthermore, a third connection hole is opened at the lower end of the bending hole. The stair tread is fixedly connected to the steel skeleton by a fixing pin passing through the second connection hole and the third connection hole.

[0015] Furthermore, a non-slip layer is arranged at the upper end of the L-shaped footrest.

[0016] Furthermore, a first magnetic part is arranged inside the bending hole, and a second magnetic part is arranged outside the bending piece. The bending piece and the bending hole are magnetically attracted to each other through the first magnetic part and the second magnetic part.

[0017] Furthermore, the railing includes a plurality of blocking rods arranged crosswise. A first connection hole is opened on each blocking rod. Adjacent two blocking rods are fixedly connected by a fixing pin passing through the first connection hole.

[0018] Furthermore, the railing further includes a plurality of horizontal supports and reinforcing ribs. The plurality of horizontal supports are arranged parallel to each other, and the plurality of reinforcing ribs are arranged parallel to each other. Meanwhile, the horizontal supports and the reinforcing ribs are arranged perpendicular to each other. The distances between adjacent two horizontal supports and adjacent two reinforcing ribs are specifically:

[0019]

[0020] Wherein: L is the maximum distance between adjacent two horizontal supports, k is a coefficient related to the structural type and boundary conditions, E is the elastic modulus of the material, I is the moment of inertia of the cross-section, F is the maximum load acting on the railing, I new is the new moment of inertia of the cross-section after adding the reinforcing ribs, I original is the moment of inertia of the cross-section of the original railing vertical rod, A f is the cross-sectional area of the reinforcing rib, and c is the distance from the center of the reinforcing rib to the neutral axis of the railing vertical rod.

[0021] Furthermore, the fixed bolt includes a bolt rod, a first fixing block is arranged in the middle of the bolt rod, a second fixing block is arranged at one end of the bolt rod, and a fastening spring is arranged between the first fixing block and the second fixing block.

[0022] The utility model provides an assembled construction steel staircase used in an assembled integral structure through improvement. Compared with the prior art, the following improvements and advantages are achieved:

[0023] First, the utility model uses connectors such as fixed bolts for quick installation, eliminating the need for on-site welding, saving time and labor costs. At the same time, the height of the stair tread and railing can be adjusted to adapt to different floor heights, that is, the number of stair treads can be increased or decreased according to actual needs to meet different building requirements.

[0024] Second, the utility model ensures the stable and reliable connection between stair treads through methods such as fixed bolts and magnetic attraction. The anti-slip layer on the stair tread improves walking safety. At the same time, the use of transverse supports and reinforcing ribs enhances the stability of the railing, ensuring the safety of users. Description of the Drawings

[0025] The following further explains the utility model in conjunction with the drawings and embodiments:

[0026] Figure 1 is a schematic structural view of the assembled construction steel staircase of the utility model;

[0027] Figure 2 is a schematic structural view of the stair tread of the utility model;

[0028] Figure 3 is a schematic structural view of the fixed bolt of the utility model;

[0029] Description of the Reference Numerals:

[0030] 1. First connection hole; 2. Railing; 3. Structural beam; 4. Steel bar anchoring assembly; 5. Starting plate; 6. Steel skeleton; 7. Second connection hole; 8. Stair tread; 9. Transverse support; 10. Reinforcing rib; 11. Bending piece; 12. Bending hole; 13. Third connection hole; 14. Anti-slip layer; 15. Fixed bolt; 16. First fixing block; 17. Fastening spring; 18. Second fixing block. Detailed Embodiment

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0033] In addition, it should be understood that for the convenience of description, the dimensions of the various components shown in the accompanying drawings are not drawn in actual proportional relationship. For example, the thickness or width of some layers may be exaggerated relative to other layers.

[0034] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of subsequent drawings.

[0035] Refer to Figures 1-3 , this embodiment provides a prefabricated construction steel staircase used in an assembled integral structure. The prefabricated construction steel staircase is built relying on the structural beam 3. In this embodiment, the prefabricated construction steel staircase includes a railing 2, a starting plate 5, a steel skeleton 6, a staircase tread 8, and a fixed pin 15. Specifically, the starting plate 5 is fixed to one side of the structural beam 3 through a steel bar anchoring assembly 4, and one end of the starting plate 5 is arranged at the upper side edge of the structural beam 3. At the same time, the steel skeleton 6 is arranged at the other end of the starting plate 5. Further, a plurality of staircase treads 8 are uniformly arranged on the upper end of the steel skeleton 6 through fixed pins 15 and second connection holes 7. At the same time, the railing 2 is arranged at the upper end of the staircase tread 8, and the lower end of the railing 2 is fixedly connected to the starting plate 5 and the steel skeleton 6 through fixed pins 15.

[0036] Specifically, when implementing this assembled construction steel staircase, first place the starting plate 5 on one side of the structural beam 3, with one end located at the upper side edge of the structural beam 3, and use the steel bar anchoring assembly 4 to fix the starting plate 5 on the structural beam 3. Then install the steel skeleton 6 at the other end of the starting plate 5 and ensure its vertical stability. Next, insert the stair tread 8 into the second connection hole 7 pre-drilled at the upper end of the steel skeleton 6 and fix it with the fixing pin 15. At the same time, repeat this process until all the stair treads 8 are installed. Finally, install the handrails 2 on both sides of the stair tread 8 and ensure that their lower ends are fixedly connected to the starting plate 5 and the steel skeleton 6 through the fixing pins 15.

[0037] Furthermore, the steel bar anchoring assembly 4 includes a steel bar anchoring plate and bolts. The steel bar anchoring plate is arranged inside the structural beam 3 and at the lower end of the starting plate 5, and the starting plate 5 and the steel bar anchoring plate are fixedly connected by bolts. That is to say, when installing the steel bar anchoring assembly 4, place the steel bar anchoring plate at the predetermined position inside the structural beam 3 and ensure its accurate position, and then use an appropriate fixing method, such as welding or special fixing parts, to fix the steel bar anchoring plate on the structural beam 3. Then place the starting plate 5 on one side of the structural beam 3, with one end located at the upper side edge of the structural beam 3, and ensure that the lower end of the starting plate 5 is aligned with the steel bar anchoring plate. Finally, connect the lower end of the starting plate 5 to the steel bar anchoring plate with bolts, and ensure that the quantity and specifications of the bolts meet the design requirements to ensure the stability and safety of the connection.

[0038] In this embodiment, the stair tread 8 includes an L-shaped footrest. One side of the upper end of the L-shaped footrest is provided with a bending hole 12, and the lower end of the L-shaped footrest is provided with a bending piece 11. Adjacent two stair treads 8 are connected by placing the bending piece 11 inside the bending hole 12. At the same time, a non-slip layer 14 is provided at the upper end of the L-shaped footrest. Furthermore, a third connection hole 13 is opened at the lower end of the bending hole 12, and the stair tread 8 is fixedly connected to the steel skeleton 6 through the fixing pin 15 passing through the second connection hole 7 and the third connection hole 13. At the same time, a first magnetic part is arranged inside the bending hole 12, and a second magnetic part is arranged outside the bending piece 11, and the bending piece 11 and the bending hole 12 are magnetically attracted by the first magnetic part and the second magnetic part.

[0039] Specifically, drill a hole on one side of the upper end of the L-shaped footrest to form the bending hole 12, form the bending piece 11 at the lower end, and install the non-slip layer 14 on the upper surface of the L-shaped footrest at the same time to ensure that it covers the entire tread. In this embodiment, the specific process of installing the stair tread 8 is as follows:

[0040] Step 1: Insert the bent piece 11 of the first stair tread 8 into the second connection hole 7 of the steel skeleton 6, and fix the stair tread 8 on the steel skeleton 6 by passing a fixing pin 15 through the third connection hole 13 and the second connection hole 7.

[0041] Step 2: Insert the bent piece 11 of the next stair tread 8 into the bent hole 12 of the previous stair tread 8, and ensure that the bent piece 11 and the bent hole 12 are magnetically attracted to each other through the first magnetic part and the second magnetic part to increase the connection stability.

[0042] Step 3: Repeat the above steps until all the stair treads 8 are installed.

[0043] It should be noted that after the installation is completed, it is necessary to carefully check whether the connection between the stair tread 8 and the steel skeleton 6 is firm. At the same time, confirm that all the fixing pins 15 have been correctly installed and there is no looseness.

[0044] In this embodiment, the railing 2 includes a plurality of blocking bars arranged crosswise. Each blocking bar is provided with a first connection hole 1, and adjacent two blocking bars are fixedly connected by passing a fixing pin 15 through the first connection hole 1. Further, the railing 2 also includes a plurality of horizontal supports 9 and reinforcing ribs 10. The plurality of horizontal supports 9 are arranged parallel to each other, the plurality of reinforcing ribs 10 are arranged parallel to each other, and at the same time, the horizontal supports 9 and the reinforcing ribs 10 are arranged perpendicular to each other. And the distances between adjacent two horizontal supports 9 and adjacent two reinforcing ribs 10 are specifically:

[0045]

[0046] Where: L is the maximum distance between adjacent two horizontal supports, k is a coefficient related to the structural type and boundary conditions, E is the elastic modulus of the material, I is the sectional moment of inertia, F is the maximum load acting on the railing, I new is the new sectional moment of inertia after adding the reinforcing ribs, I original is the sectional moment of inertia of the original railing vertical bar, A f is the cross-sectional area of the reinforcing rib, and c is the distance from the center of the reinforcing rib to the neutral axis of the railing vertical bar.

[0047] That is to say, the railing 2 is quickly and firmly installed on the stair tread 8 through the blocking bars, the horizontal supports 9, the reinforcing ribs 10 and the fixing pins 15, etc. This fixing method not only ensures the stability and safety of the railing 2, but also facilitates the construction and later maintenance work.

[0048] In this embodiment, the fixing pin 15 includes a plug rod. A first fixing block 16 is arranged in the middle of the plug rod, a second fixing block 18 is arranged at one end of the plug rod, and a fastening spring 17 is arranged between the first fixing block 16 and the second fixing block 18.

[0049] Specifically, when the fixed bolt 15 is inserted, one end of the insertion rod is inserted into the above-mentioned connection hole, and at this time, the fastening spring 17 is compressed. At the same time, when the first fixing block 16 approaches the connection hole, the fastening spring 17 will release the pressure, causing the first fixing block 16 to catch the connection hole and prevent the insertion rod from moving further. When the fixed bolt 15 is fixedly connected, that is, the second fixing block 18 prevents the insertion rod from disengaging from the other end. At this time, the elastic force provided by the fastening spring 17 ensures the fastening state of the fixed bolt 15 in the connection hole, thereby realizing the fixed connection between components.

[0050] That is to say, through the fixed bolt 15, components such as the stair tread 8 and the railing 2 are quickly and firmly installed on the steel skeleton 6. This installation method not only ensures the stability and safety of the stairs but also facilitates the construction and subsequent maintenance work.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled steel staircase for use in an assembled integral structure, comprising a structural beam (3), characterized in that: A starting plate (5) is fixed to one side of the structural beam (3) via a steel bar anchoring assembly (4); one end of the starting plate (5) is arranged on the upper side of the structural beam (3); a steel frame (6) is arranged at the other end of the starting plate (5); a plurality of stair treads (8) are evenly arranged at the upper end of the steel frame (6) via a fixing pin (15) and a second connecting hole (7); a handrail (2) is arranged at the upper end of the stair treads (8); and the lower end of the handrail (2) is fixedly connected to the starting plate (5) and the steel frame (6) via a fixing pin (15).

2. The assembled steel staircase used in the assembled integral structure according to claim 1, characterized in that: The steel bar anchoring assembly (4) comprises a steel bar anchoring plate and bolts. The steel bar anchoring plate is arranged inside the structural beam (3), and the steel bar anchoring plate is arranged at the lower end of the starting plate (5). The starting plate (5) and the steel bar anchoring plate are fixedly connected by bolts.

3. The assembled steel staircase used in the assembled integral structure according to claim 1, characterized in that: The stair tread (8) comprises an L-shaped footrest, a bending hole (12) is arranged on one side of the upper end of the L-shaped footrest, a bending piece (11) is arranged on the lower end of the L-shaped footrest, and two adjacent stair treads (8) are connected by the bending piece (11) arranged inside the bending hole (12).

4. The assembled steel staircase used in the assembled integral structure according to claim 3, characterized in that: A third connection hole (13) is provided at the lower end of the bending hole (12), and the stair tread (8) is fixedly connected to the steel frame (6) by a fixing pin (15) penetrating the second connection hole (7) and the third connection hole (13).

5. The assembled steel staircase used in the assembled integral structure according to claim 3, characterized in that: The upper end of the L-shaped footrest is provided with an anti-slip layer (14).

6. The assembled steel staircase used in the assembled integral structure according to claim 3, characterized in that: A first magnetic part is arranged inside the bending hole (12), and a second magnetic part is arranged outside the bending piece (11), and the bending piece (11) and the bending hole (12) are magnetically attracted to each other through the first magnetic part and the second magnetic part.

7. The assembled steel staircase used in the assembled integral structure according to claim 1, characterized in that: The handrail (2) comprises a plurality of mutually cross-arranged blocking rods, each of which is provided with a first connection hole (1), and two adjacent blocking rods are fixedly connected by a fixing pin (15) penetrating the first connection hole (1).

8. The assembled steel staircase used in the assembled integral structure according to claim 7, characterized in that: The railing (2) further comprises a plurality of transverse supports (9) and reinforcing ribs (10), wherein the plurality of transverse supports (9) are arranged parallel to each other, and the plurality of reinforcing ribs (10) are arranged parallel to each other, and the transverse supports (9) and reinforcing ribs (10) are arranged perpendicular to each other, and the spacing between two adjacent transverse supports (9) and two adjacent reinforcing ribs (10) is specifically: Where: L is the maximum distance between two adjacent lateral supports, k is a coefficient related to the structure type and boundary conditions, E is the elastic modulus of the material, I is the section moment of inertia, F is the maximum load acting on the railing, I new is the new section moment of inertia after adding the stiffener, I original is the section inertia moment of the original railing vertical bar, A f is the cross-sectional area of ​​the reinforcement, and c is the distance from the center of the reinforcement to the neutral axis of the vertical bar of the railing.

9. The assembled steel staircase used in the assembled integral structure according to claim 1, 4 or 7, characterized in that: The fixing latch (15) comprises an insertion rod, a first fixing block (16) is arranged in the middle of the insertion rod, a second fixing block (18) is arranged at one end of the insertion rod, and a tightening spring (17) is arranged between the first fixing block (16) and the second fixing block (18).

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