Prefabricated stair installation structure and method

Abstract

This application relates to a prefabricated staircase installation structure, comprising multiple support strips and multiple step plates. The two ends of each support strip are used to connect to an upper stair landing and a lower stair landing, respectively. Multiple mounting holes are provided on the top wall of each support strip, spaced apart along its length. Multiple step plates are also spaced apart along the length of the support strip. Each step plate has a mounting rod on its bottom wall that inserts into a mounting hole. A limiting component is provided between the mounting rod and the support strip, allowing the mounting rod to be detachably installed on the support strip via the limiting component. This prefabricated staircase installation structure improves the ease of installation of prefabricated stairs in confined spaces. This application also relates to a method for installing prefabricated stairs.

Description

Technical Field

[0001] This application relates to the technical field of prefabricated building components, and in particular to prefabricated staircase installation structures and methods. Background Technology

[0002] Staircases are an important component for vertical transportation between floors in buildings. When temporary houses are built on construction sites, the wall panels, roof panels, stairs, windows and other components are usually prefabricated in processing plants, transported to the site for assembly, and assembled into simple houses for people to live in, which greatly reduces the construction period of the houses.

[0003] In existing technologies, when constructing temporary housing, the wall panels are first assembled, and multiple wall panels are combined to form the main frame. An installation area for prefabricated stairs is reserved within the main frame. Then, a gantry crane is used to lift the prefabricated stairs to the installation area, and the two ends of the prefabricated stairs are respectively attached to the lower and upper stair platforms in the installation area. The two ends of the prefabricated stairs are detachably installed on the lower and upper stair platforms by bolt fixing. After the prefabricated stairs are installed, the top slab is sealed, completing the rapid construction of the house and greatly reducing the construction period.

[0004] However, after the main frame of such houses is completed, the space reserved in the installation area within the main frame is limited. The prefabricated stairs themselves occupy a lot of space, and during the installation of the prefabricated stairs, it is necessary to ensure that both ends of the stairs are aligned with the lower and upper stair platforms respectively. Therefore, during the installation process, in order to avoid the prefabricated stairs colliding with the side walls of the main frame, it is necessary to constantly adjust the lifting path and angle of the prefabricated stairs in order to lift them to the designated position, causing many inconveniences. Therefore, further improvements are needed. Summary of the Invention

[0005] To improve the ease of installation of prefabricated stairs, this application provides a prefabricated stair installation structure and method.

[0006] Firstly, the prefabricated staircase installation structure provided in this application adopts the following technical solution:

[0007] A prefabricated staircase installation structure includes multiple support bars and multiple step plates. The two ends of the support bars are respectively used to connect to the upper and lower staircase platforms. The top wall of the support bars has multiple mounting holes, which are spaced apart along the length of the support bars. The multiple step plates are spaced apart along the length of the support bars. The bottom wall of each step plate has a mounting rod that is inserted into a mounting hole. A limiting component is provided between the mounting rod and the support bar. The mounting rod can be detachably installed on the support bar through the limiting component.

[0008] By adopting the above technical solution, and through the setting of multiple support strips and multiple step plates, during the installation of prefabricated stairs, multiple support strips are first installed sequentially, with both ends of the support strips connected to the upper and lower stair platforms respectively. The multiple support strips are used to support the step plates. The multiple step plates are then installed sequentially along the length of the support strips. Then, the installation rod is limited by the limiting component, keeping the installation rod inserted into the installation hole, thus completing the installation of the prefabricated stairs. The multiple step plates and multiple support strips form a prefabricated stairs, reducing the possibility of inconvenience in the installation of prefabricated stairs due to the limited space reserved in the main frame, and greatly improving the ease of installation of prefabricated stairs.

[0009] Optionally, the bottom wall of the support bar is provided with an installation groove, and each of the installation holes is connected to the installation groove. The side wall of the mounting rod is provided with a limiting groove. The limiting component includes a limiting strip and a limiting spring. The limiting strip is slidably installed in the installation groove, and the limiting spring is installed between the limiting strip and the installation groove. The limiting spring normally causes the limiting strip to be inserted into the limiting groove of the mounting rod.

[0010] By adopting the above technical solution, through the setting of limit strips, limit springs and limit components, pulling the limit strip forces the limit strip to squeeze the limit spring and force the limit spring to retain elasticity. Then, the installation rod of the step plate is inserted into the installation hole. Then, the pulling effect on the limit strip is released, and the limit strip returns to its initial position under the action of the limit spring, thereby locking into the limit groove of the installation rod, completing the installation of the step plate, and improving the installation convenience of prefabricated stairs.

[0011] Optionally, the bottom wall of the support bar is provided with an installation groove, and each of the installation holes is connected to the installation groove. The side wall of the support bar is provided with a first limiting hole connected to the installation groove, and the side wall of the mounting rod is provided with a second limiting hole opposite to the first limiting hole. The limiting component includes a limiting rod and a limiting member. One end of the limiting rod is used to be inserted into the side wall of the main frame, and the other end passes through the first limiting hole and the second limiting hole in sequence. The limiting member is provided on the support bar to keep the limiting rod inserted into the first limiting hole and the second limiting hole.

[0012] By adopting the above technical solution, and through the setting of limiting rods and limiting components, after the mounting rod of the step plate is inserted into the mounting hole, one end of the limiting rod is sequentially passed through the first limiting hole and the second limiting hole, and then inserted into the side wall of the main frame. Then, the limiting component limits the limiting rod, which can limit the mounting rod to the mounting groove, thereby fixing the step plate to the support strip and improving the ease of installation of the step plate. On the other hand, the fact that one end of the limiting rod is inserted into the side wall of the main frame allows part of the weight of the step plate to be transferred to the side wall of the main frame through the limiting rod when people walk on the step plate, thereby sharing the pressure on the support strip, reducing the possibility of deformation due to excessive stress on the support strip, and improving the stability of the overall structure.

[0013] Optionally, each of the step plates has a protective net on its upper surface. One end of the protective net is hinged to the edge of the upper surface of the step plate, and the free end of the protective net is used to connect to adjacent step plates to cover the height difference gap between two adjacent step plates.

[0014] By adopting the above technical solution and setting up a protective net, after all the steps are installed, the protective net on the upper surface of the steps is flipped over so that the free end of the protective net is connected to the adjacent steps. The protective net can block the gap between the height difference of two adjacent steps, improve the safety of people walking on the steps, and reduce the possibility of people stepping into the gap between the height difference of two adjacent steps.

[0015] Optionally, a connector is provided between the free end of the protective net and the adjacent step plate, and the free end of the protective net can be detachably installed on the adjacent step plate through the connector.

[0016] By adopting the above technical solution and setting the connectors, the free end of the protective net is connected to the adjacent step plate.

[0017] Optionally, the free end of the protective net is provided with a first connecting rod, and the bottom wall of the adjacent step plate is provided with a second connecting rod; the connecting member includes a connecting sleeve, which is slidably sleeved on the outer peripheral wall of the second connecting rod and threadedly connected to the first connecting rod and the second connecting rod respectively.

[0018] By adopting the above technical solution, the free end of the protective net is flipped through the connecting sleeve, forcing the first connecting rod at the free end of the protective net to flip to a state opposite to the second connecting rod. Then, the connecting sleeve is rotated so that it is threadedly connected to both the first and second connecting rods, thereby allowing the free end of the protective net to connect with the adjacent step plate. On the other hand, the first and second connecting rods are integrated through the connecting sleeve, so that two adjacent step plates are integrated through the protective net. When people step on the step plate, part of the weight of the step plate can be transferred to the adjacent step plate through the protective net, thus distributing the weight of a single step plate, reducing the possibility of deformation due to excessive stress, and improving the service life of the overall structure.

[0019] Optionally, the upper surface of the step plate is provided with a first embedding groove for embedding a protective net, and one end of the protective net is hinged to the inner wall of the first embedding groove.

[0020] By adopting the above technical solution, the protective net can be stored in the first embedding groove before the prefabricated stairs are installed, reducing the space occupation rate and facilitating the storage and transportation of the step slabs. On the other hand, the first embedding groove can improve the surface roughness of the step slabs, thereby increasing the friction between the surface of the step slabs and the soles of human feet, reducing the possibility of people slipping when stepping on the step slabs, and improving the overall structural safety.

[0021] Optionally, the lower surface of the step plate is provided with a second embedding groove for embedding the mounting rod, and one end of the mounting rod is hinged to the inner wall of the second embedding groove; a snap-fit ​​component is provided between the mounting rod and the protective net, and when the protective net is embedded in the first embedding groove and the mounting rod is embedded in the second embedding groove, the mounting rod and the protective net are detachably connected by the snap-fit ​​component.

[0022] By adopting the above technical solution, the installation rod can be stored in the second installation groove before the prefabricated staircase is installed, thus reducing the space occupancy rate. The protective net and the installation rod are connected to each other by the snap-fit ​​component, so that the protective net can be kept embedded in the first installation groove and the installation rod can be kept embedded in the second installation groove, so as to facilitate the storage or transportation of the step plate.

[0023] Optionally, the first embedding slot has a connecting slot that communicates with the second embedding slot. The snap-fit ​​component includes a clamping ring fixed to the mounting rod. The clamping ring is elastically configured and has an opening for the protective net to enter and exit. When the protective net is embedded in the first embedding slot and the mounting rod is embedded in the second embedding slot, the clamping ring enters the first embedding slot through the connecting slot and the protective net is snapped into the clamping ring.

[0024] By adopting the above technical solution, and through the setting of the clamping ring, when the protective net is stored in the first embedding groove and the mounting rod is stored in the second embedding groove, the protective net is first flipped over to force it into the first embedding groove, and then the mounting rod is flipped over to force it into the second embedding groove. At this time, the mounting rod can drive the clamping ring to move into the first embedding groove through the connecting groove. During the process of the clamping ring moving into the first embedding groove, the mounting rod is pushed forcefully so that the side wall at the opening of the clamping ring abuts against the protective net. At this time, the opening of the clamping ring is deformed by force and opened, so that the protective net can be snapped into the clamping ring, improving the ease of disassembly and assembly between the protective net and the mounting rod.

[0025] Secondly, the prefabricated staircase installation method provided in this application adopts the following technical solution:

[0026] The prefabricated staircase installation method includes the following steps: S1, Installation of support strips: Connect both ends of the support strips to the upper and lower staircase platforms respectively, and install multiple support strips in sequence; S2, Installation of step plates: Install multiple step plates on the upper surface of the support strips to form the steps of the staircase; S3, Installation of safety nets: Turn the safety nets of each step plate in sequence so that the free ends of the safety nets are connected to the adjacent step plates.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By using multiple support bars and multiple step plates, the prefabricated staircase is installed by first installing multiple support bars in sequence, connecting the two ends of each support bar to the upper and lower stair platforms respectively. The support bars support the step plates. The step plates are then installed sequentially along the length of the support bars. Finally, the installation rod is limited by a limiting component to keep it inserted in the mounting hole, thus completing the installation of the prefabricated staircase. The combination of multiple step plates and support bars forms the prefabricated staircase, reducing the possibility of inconvenience caused by limited space in the installation area reserved within the main frame, and greatly improving the ease of installation of the prefabricated staircase.

[0029] 2. By setting up limiting rods and limiting components, after the mounting rod of the step plate is inserted into the mounting hole, one end of the limiting rod is sequentially passed through the first limiting hole and the second limiting hole, and then inserted into the side wall of the main frame. The limiting component then limits the limiting rod, which can limit the mounting rod to the mounting groove, thereby fixing the step plate to the support strip and improving the ease of installation of the step plate. On the other hand, the fact that one end of the limiting rod is inserted into the side wall of the main frame allows part of the weight of the step plate to be transferred to the side wall of the main frame through the limiting rod when people walk on the step plate, thereby sharing the pressure on the support strip, reducing the possibility of deformation due to excessive stress on the support strip, and improving the stability of the overall structure.

[0030] 3. By setting up a protective net, after all the steps are installed, flip the protective net on the upper surface of the steps so that the free end of the protective net is connected to the adjacent steps. The protective net can block the gap between the height difference between two adjacent steps, improve the safety of people walking on the steps, and reduce the possibility of people stepping into the gap between the height difference between two adjacent steps. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0032] Figure 2 This is a schematic diagram illustrating the structure of the mounting rod and the protective netting in Example 1;

[0033] Figure 3 This is a partial cross-sectional view of Embodiment 1 illustrating the limiting component;

[0034] Figure 4 This is a schematic diagram illustrating the structure of the second embedding slot in Embodiment 1;

[0035] Figure 5 This is a partial cross-sectional view of Embodiment 1 showing the interlocking of the mounting rod and the protective net;

[0036] Figure 6 yes Figure 2 Enlarged view of point A in the middle;

[0037] Figure 7 This is a partial cross-sectional view of the limiting component in Embodiment 3;

[0038] Figure 8 yes Figure 7 Enlarged view of point A in the middle.

[0039] Explanation of reference numerals in the attached drawings: 1. Support bar; 11. Mounting hole; 12. Mounting groove; 13. First limiting hole; 14. Upper connecting part; 15. Lower connecting part; 2. Step plate; 21. Mounting rod; 211. Limiting groove; 212. Second limiting hole; 213. Abutment block; 22. Protective net; 23. First connecting rod; 24. Second connecting rod; 25. Connecting sleeve; 26. First embedding groove; 27. Second embedding groove; 28. Communicating groove; 29. ​​Cutting surface; 3. Limiting component; 31. Limiting bar; 32. Limiting spring; 33. Limiting rod; 34. Limiting plate; 35. Pulling rod; 4. Clamping ring; 41. Opening; 5. Insertion hole. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail. Example 1

[0041] This application discloses a prefabricated staircase installation structure.

[0042] Reference Figure 1 The prefabricated staircase installation structure includes support bars 1 and step plates 2. Multiple support bars 1 and multiple step plates 2 are provided. Multiple support bars 1 are used to overlap between the upper stair platform and the lower stair platform to jointly support all step plates 2. The support bars 1 are inclined. The two ends of the support bars 1 are respectively provided with an upper connecting part 14 and a lower connecting part 15. The upper connecting part 14 is used to connect to the upper stair platform, and the lower connecting part 15 is used to connect to the lower stair platform. In this embodiment, the upper connecting part 14 and the upper stair platform, and the lower connecting part 15 and the lower stair platform are detachably installed by bolt fixing (not shown in the figure).

[0043] Reference Figure 2 , Figure 3 In this embodiment, the bottom wall of the support bar 1 is provided with an installation groove 12, and both ends of the installation groove 12 extend along the length direction of the support bar 1 so that the support bar 1 forms a channel steel structure; the top wall of the support bar 1 is provided with an installation hole 11 for connecting the step plate 2. The number of installation holes 11 is set to a plurality of them and they are arranged at intervals along the length direction of the support bar 1. All installation holes 11 are provided in a one-to-one correspondence with all step plates 2. Each installation hole 11 is connected to the installation groove 12, and the axial direction of the installation hole 11 is vertical.

[0044] Reference Figure 1 , Figure 2 Multiple stepped plates 2 are spaced apart along the length of the support bar 1. The surface of the stepped plate 2 is horizontal, and both ends of the stepped plate 2 extend along the width of the support bar 1. A cutting surface 29 is provided between one side wall of the stepped plate 2 and the lower surface of the stepped plate 2. The cutting surface 29 is used to abut against the upper surface of the support bar 1. The slope of the cutting surface 29 is the same as the slope of the support bar 1, so that when the cutting surface 29 is in contact with the upper surface of the support bar 1, the surface of the stepped plate 2 is horizontal.

[0045] Reference Figure 2 , Figure 3 , Figure 4The lower surface of the step plate 2 is provided with a second embedding groove 27. There are multiple second embedding grooves 27, which are arranged one-to-one with multiple support bars 1. One end of each second embedding groove 27 penetrates the side wall of the step plate 2 near the cutting surface 29. An installation rod 21 is installed in each second embedding groove 27. One end of the installation rod 21 is hinged to the inner wall of the second embedding groove 27. The hinge point between the installation rod 21 and the second embedding groove 27 is located on the side of the second embedding groove 27 away from the cutting surface 29. The second embedding groove 27 is used for embedding the installation rod 21 so that the installation rod 21 can be stored in the second embedding groove 27. The installation rod 21 is used to be inserted into the mounting hole 11 of the corresponding support bar 1. The outer peripheral wall of the installation rod 21 is provided with an abutment block 213. When the installation rod 21 is inserted into the mounting hole 11, the abutment block 213 abuts against the upper surface of the support bar 1 and cooperates with the cutting surface 29 of the step plate 2 to force the surface of the step plate 2 to remain horizontal.

[0046] Reference Figure 3 , Figure 4 A limiting groove 211 is provided on the side wall of the mounting rod 21. A limiting component 3 is installed between the limiting groove 211 and the mounting groove 12. The limiting component 3 is used to keep the mounting rod 21 inserted in the mounting hole 11 and to allow the mounting rod 21 to be detachably installed on the support bar 1.

[0047] Reference Figure 3 In this embodiment, the limiting component 3 includes a limiting strip 31 and a limiting spring 32. The limiting strip 31 is slidably installed in the mounting groove 12. Both ends of the limiting strip 31 extend along the length direction of the support strip 1. A pull rod 35 is fixedly installed on the side wall of the limiting strip 31 away from the mounting rod 21. One end of the pull rod 35 away from the limiting strip 31 protrudes through the side wall of the support strip 1. At least two pull rods 35 are provided (only one is shown in the figure). Multiple pull rods 35 are spaced apart along the length direction of the support strip 1. The limiting strip 31 is slidably installed in the mounting groove 12 through the pull rods 35. Multiple limiting springs 32 are provided and are corresponding to multiple pull rods 35 one by one. The limiting spring 32 is sleeved on the outer periphery of the corresponding pull rod 35. One end of the limiting spring 32 is fixedly connected to the side wall of the limiting strip 31, and the other end is fixedly connected to the inner wall of the mounting groove 12. The limiting spring 32 normally causes the limiting strip 31 to be inserted into the limiting groove 211 of the mounting rod 21.

[0048] It should be noted that the two ends of the limiting strip 31 extend along the length of the support strip 1 so that the limiting strip 31 can be inserted into the limiting groove 211 of the mounting rod 21 of all the step plates 2 at the same time, so as to limit all the step plates 2 simultaneously.

[0049] Reference Figure 1 , Figure 5In this embodiment, a first embedding groove 26 is provided on the upper surface of each step plate 2. The shape of the first embedding groove 26 is a mesh-like groove with cross-shaped horizontal and vertical lines. With this design, the first embedding groove 26 is used to improve the roughness of the upper surface of the step plate 2 and reduce the possibility of people slipping when walking on the step plate 2.

[0050] Reference Figure 1 , Figure 4 A protective net 22 is installed in the first embedding groove 26. The protective net 22 is a mesh structure made of iron. One end of the protective net 22 is hinged to the inner wall of the first embedding groove 26. The hinge point between the protective net 22 and the first embedding groove 26 is located on the side of the first embedding groove 26 near the cutting surface 29. The first embedding groove 26 is used for embedding the protective net 22 so that the protective net 22 can be stored in the first embedding groove 26. For ease of description, the hinge point between the protective net 22 and the first embedding groove 26 is defined as the hinge end of the protective net 22, and the other end is defined as the free end of the protective net 22. The free end of the protective net 22 is used to connect to the adjacent step plate 2 to cover the height difference gap between two adjacent step plates 2 and improve the safety of the overall structure.

[0051] Reference Figure 2 , Figure 4 , Figure 6 The free end of the protective net 22 is fixedly installed with a first connecting rod 23. The number of first connecting rods 23 is set to be multiple and spaced apart along the length of the step plate 2. A second connecting rod 24 is fixedly installed on the lower surface of each step plate 2. The axis of the second connecting rod 24 is vertically arranged. The second connecting rod 24 is located on the side of the lower surface of the step plate 2 away from the cutting surface 29. The number of second connecting rods 24 corresponds to the number of first connecting rods 23. When the protective net 22 is flipped to the vertical state, the central axis of the first connecting rod 23 of the protective net 22 coincides with the central axis of the second connecting rod 24 of the adjacent step plate 2. A connector is installed between the first connecting rod 23 of the protective net 22 and the second connecting rod 24 of the adjacent step plate 2. The free end of the protective net 22 can be detachably installed on the adjacent step plate 2 through the connector.

[0052] Reference Figure 2 , Figure 6 In this embodiment, the connector is configured as a connecting sleeve 25, which is slidably sleeved on the outer peripheral wall of the second connecting rod 24, and the inner peripheral wall of the connecting sleeve 25 is threadedly connected between the outer peripheral wall of the first connecting rod 23 and the outer peripheral wall of the second connecting rod 24.

[0053] Reference Figure 4 , Figure 5The bottom wall of the first embedding groove 26 is provided with multiple connecting grooves 28, and all connecting grooves 28 are provided in a one-to-one correspondence with all second embedding grooves 27. Each connecting groove 28 is connected to the corresponding second embedding groove 27. A snap-fit ​​component is installed between the mounting rod 21 and the protective net 22. When the protective net 22 is embedded in the first embedding groove 26 and the mounting rod 21 is embedded in the second embedding groove 27, the mounting rod 21 and the protective net 22 are snapped together by the snap-fit ​​component.

[0054] Reference Figure 4 , Figure 5 In this embodiment, the snap-fit ​​component is configured as a clamping ring 4, which is elastically set and fixedly installed on the side wall of the mounting rod 21. When the mounting rod 21 is housed in the second embedding groove 27, the clamping ring 4 is rotated into the first embedding groove 26 through the connecting groove 28. The clamping ring 4 has an opening 41 for the protective net 22 to enter and exit. The side wall of the clamping ring 4 located at the opening 41 has a guide surface for forcing the clamping ring 4 to deform. When the protective net 22 is embedded in the first embedding groove 26 and the mounting rod 21 is embedded in the second embedding groove 27, the protective net 22 is snapped into the clamping ring 4.

[0055] It should be noted that when storing the protective net 22, firstly, the protective net 22 is flipped into the first embedding slot 26, and then the mounting rod 21 is flipped into the second embedding slot 27. The clamping ring 4 of the mounting rod 21 enters the first embedding slot 26 through the connecting slot 28, thereby engaging with the protective net 22, so that the protective net 22 and the mounting rod 21 are interlocked, facilitating the storage or transportation of the step plate 2. It is particularly important to note that the end of the mounting rod 21 closest to the step plate 2 is defined as the hinge end of the mounting rod 21. The end of the mounting rod 21 away from the step plate 2 is defined as the free end of the mounting rod 21. The clamping ring 4 is close to the hinge end of the mounting rod 21. When the mounting rod 21 is housed in the second embedding groove 27, the free end of the mounting rod 21 partially extends out of the second embedding groove 27. With this design, flipping the free end of the mounting rod 21 forces the mounting rod 21 into the second embedding groove 27, thereby clamping the clamping ring 4 onto the protective net 22. The clamping ring 4 is close to the hinge end of the mounting rod 21, which uses the lever principle and is relatively labor-saving.

[0056] The implementation principle of Embodiment 1 of this application is as follows: In the unused state, the protective net 22 is embedded in the first embedding groove 26 and the mounting rod 21 is embedded in the second embedding groove 27 under the action of the clamping ring 4, thereby reducing the overall space occupancy rate of the step plate 2, so as to facilitate the storage or transportation of the step plate 2; in the used state, the mounting rod 21 is pulled, forcing the mounting rod 21 to rotate out of the second embedding groove 27 and the axial rotation of the mounting rod 21 to a vertical state, and then inserted into the mounting hole 11 of the support bar 1 and limited by the limiting bar 31. The plate surface of the step plate 2 is kept in a horizontal state under the action of the abutment block 213 and the cutting surface 29 of the mounting rod 21, improving the installation convenience of the step plate 2;

[0057] After the step slab 2 is installed, the protective net 22 is flipped to a vertical position. The first connecting rod 23 of the protective net 22 is connected to the second connecting rod 24 of the adjacent step slab 2 through the connecting sleeve 25. On the one hand, the protective net 22 can cover the height difference gap between two adjacent step slabs 2, improving the overall structural safety. On the other hand, the protective net 22 forms an integral whole with the adjacent step slab 2 through the connecting sleeve 25. When people step on the surface of the step slab 2, part of the weight of the step slab 2 can be transferred to the adjacent step slab 2 through the protective net 22 to share the pressure, reduce the possibility of deformation due to excessive force on the step slab 2, and improve the service life of the overall structure. Multiple step slabs 2 and multiple support bars 1 form a prefabricated staircase, reducing the possibility of inconvenient installation of the prefabricated staircase due to the limited space reserved in the main frame, and greatly improving the installation convenience of the prefabricated staircase. Example 2

[0058] This application also discloses a method for installing prefabricated stairs.

[0059] The installation method for prefabricated stairs includes the following steps:

[0060] S1. Installation of support bar 1: Overlap the two ends of support bar 1 onto the upper and lower stair platforms respectively, and connect the upper connecting part 14 of support bar 1 to the upper stair platform by bolt fixing, and the lower connecting part 15 of support bar 1 is adjacent to the lower stair platform; install multiple support bars 1 in sequence, and the distance between two adjacent support bars 1 is equal to the distance between two adjacent mounting rods 21 of step plate 2.

[0061] S2. Installation of Step Plate 2: a. Flip the mounting rod 21 so that the mounting rod 21 in the step plate 2 rotates out of the second recess 27; b. After the mounting rod 21 rotates out of the second recess 27, insert the mounting rod 21 of the step plate 2 into the mounting hole 11 of the support bar 1, and then insert the mounting rods 21 of multiple step plates 2 into the corresponding mounting holes 11 of the support bar 1 in sequence; c. Pull the pulling rod 35 to force the limiting bar 31 to squeeze the limiting spring 32 and force the limiting bar 31 to avoid the mounting rod 2. Mounting rods 21 are installed, and all the mounting rods 21 of the step plates 2 move downward under the action of gravity, so that the abutting block 213 of the mounting rod 21 abuts against the upper surface of the support bar 1, and the limiting groove 211 of the mounting rod 21 moves to a state opposite to the limiting bar 31. Then, the pulling rod 35 is released, and the limiting bar 31 is simultaneously engaged with the limiting groove 211 of all the mounting rods 21 under the action of the limiting spring 32, so as to fix all the step plates 2 to the support bar 1, forming the steps of the staircase.

[0062] S3. Installation of protective netting 22: Rotate the protective netting 22 of each step plate 2 in sequence, and connect the free end of the protective netting 22 to the adjacent step plate 2 through the connecting sleeve 25.

[0063] The implementation principle of Embodiment 2 of this application is as follows: the support bar 1 provides a support carrier for the step plate 2, and multiple step plates 2 can be detachably installed on the upper surface of the support bar 1 through the limiting bar 31, thereby improving the ease of disassembly and assembly of the overall structure; the protective net 22 can cover the height difference gap between two adjacent step plates 2, reducing the possibility that people's feet will extend into the height difference gap between two adjacent step plates 2 when walking on the step plate 2, thereby improving the safety of the overall structure. Example 3

[0064] This application discloses a prefabricated staircase installation structure.

[0065] Reference Figure 7 The difference between the prefabricated staircase installation structure disclosed in this application and that in embodiment 1 is as follows:

[0066] Each support bar 1 has a first limiting hole 13 on its side wall. The number of first limiting holes 13 is set to be multiple and spaced apart along the length of the support bar 1. All first limiting holes 13 are set one-to-one with all mounting holes 11. Each first limiting hole 13 is a through hole that penetrates two opposite side walls of the support bar 1 and is connected to the mounting groove 12 of the support bar 1. The side wall of the mounting rod 21 has a second limiting hole 212. The second limiting hole 212 is a through hole that penetrates two opposite side walls of the mounting rod 21. When the mounting rod 21 is inserted into the mounting hole 11 and the abutment block 213 abuts against the upper surface of the support bar 1, the first limiting hole 13 and the second limiting hole 212 are set opposite to each other.

[0067] Reference Figure 7 , Figure 8 In this embodiment, the limiting component 3 includes a limiting rod 33 and a limiting member. One end of the limiting rod 33 passes through the first limiting hole 13 on one side of the support bar 1 into the mounting groove 12, then passes through the second limiting hole 212 of the mounting rod 21, and then passes through the first limiting hole 13 on the other side of the support bar 1, and passes through all the support bars 1 in sequence to connect all the support bars 1 in series. It should be noted that in this embodiment, it is necessary to open the insertion hole 5 on the side wall of the main frame for the limiting rod 33 to be inserted. After one end of the limiting rod 33 is connected in series with all the support bars 1, it is matched and inserted into the insertion hole 5 of the main frame.

[0068] Reference Figure 7 , Figure 8The limiting member is installed on the support bar 1 to keep the limiting rod 33 inserted in the first limiting hole 13 and the second limiting hole 212. In this embodiment, the limiting member is set as a limiting plate 34. The limiting plate 34 is fixedly installed on the end face of the limiting rod 33 away from the insertion hole 5. The limiting plate 34 is detachably installed on the side wall of the limiting bar 31 by means of bolt fixing.

[0069] The implementation principle of Embodiment 3 of this application is as follows: the limiting rod 33 is connected in series with all the support bars 1 and then inserted into the insertion hole 5. After being fixed in position by the limiting plate 34, the limiting rod 33 makes all the support bars 1 form a whole, thereby improving the support stability of the overall structure. On the other hand, one end of the limiting rod 33 is matched and inserted into the insertion hole 5. When people walk on the step plate 2, the pressure on the step plate 2 is transmitted to the support bar 1. Part of the pressure on the support bar 1 can be transmitted to the side wall of the main frame through the limiting rod 31 to share the pressure at both ends of the support bar 1, thereby further improving the support stability of the overall structure.

[0070] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-fabricated stair installation structure, characterized by: The system includes multiple support bars (1) and multiple step plates (2). The two ends of each support bar (1) are respectively used to connect to an upper stair platform and a lower stair platform. The top wall of each support bar (1) has multiple mounting holes (11) spaced apart along the length of the support bar (1). The multiple step plates (2) are spaced apart along the length of the support bars (1). The bottom wall of each step plate (2) is provided with a mounting rod (21) inserted into the mounting hole (11). A limiting distance is provided between the mounting rod (21) and the support bar (1). The mounting rod (21) is detachably mounted to the support bar (1) via the positioning component (3); each step plate (2) has a protective net (22) on its upper surface, one end of which is hinged to the edge of the upper surface of the step plate (2), and the free end of which is used to connect to the adjacent step plate (2) to cover the height difference gap between the two adjacent step plates (2); a connecting piece is provided between the free end of the protective net (22) and the adjacent step plate (2), and the free end of the protective net (22) is connected to the adjacent step plate (2). The protective net (22) is detachably installed on an adjacent step plate (2) via a connector; the free end of the protective net (22) is provided with a first connecting rod (23), and the bottom wall of the adjacent step plate (2) is provided with a second connecting rod (24); the connector includes a connecting sleeve (25), which is slidably sleeved on the outer peripheral wall of the second connecting rod (24) and threadedly connected to the first connecting rod (23) and the second connecting rod (24) respectively; the upper surface of the step plate (2) is provided with a first embedding groove (26) for embedding the protective net (22), and the protective net ( One end of the mounting rod (22) is hinged to the inner wall of the first embedding groove (26); the lower surface of the step plate (2) is provided with a second embedding groove (27) for embedding the mounting rod (21), and one end of the mounting rod (21) is hinged to the inner wall of the second embedding groove (27); a snap-fit ​​is provided between the mounting rod (21) and the protective net (22). When the protective net (22) is embedded in the first embedding groove (26) and the mounting rod (21) is embedded in the second embedding groove (27), the mounting rod (21) and the protective net (22) are detachably connected by the snap-fit.

2. The prefabricated staircase installation structure according to claim 1, characterized in that: The bottom wall of the support bar (1) is provided with an installation groove (12), and each of the installation holes (11) is connected to the installation groove (12). The side wall of the mounting rod (21) is provided with a limiting groove (211). The limiting component (3) includes a limiting bar (31) and a limiting spring (32). The limiting bar (31) is slidably installed in the installation groove (12), and the limiting spring (32) is installed between the limiting bar (31) and the installation groove (12). The limiting spring (32) normally causes the limiting bar (31) to be inserted into the limiting groove (211) of the mounting rod (21).

3. The prefabricated staircase installation structure according to claim 1, characterized in that: The bottom wall of the support bar (1) is provided with an installation groove (12), and each of the installation holes (11) is connected to the installation groove (12). The side wall of the support bar (1) is provided with a first limiting hole (13) connected to the installation groove (12), and the side wall of the mounting rod (21) is provided with a second limiting hole (212) opposite to the first limiting hole (13). The limiting component (3) includes a limiting rod (33) and a limiting member. One end of the limiting rod (33) is used to be inserted into the side wall of the main frame, and the other end is sequentially inserted into the first limiting hole (13) and the second limiting hole (212). The limiting member is provided on the support bar (1) to keep the limiting rod (33) inserted into the first limiting hole (13) and the second limiting hole (212).

4. The prefabricated staircase installation structure according to claim 1, characterized in that: The first embedding slot (26) has a connecting slot (28) that connects to the second embedding slot (27). The snap-fit ​​component includes a clamping ring (4) fixed to the mounting rod (21). The clamping ring (4) is elastically set and has an opening (41) for the protective net (22) to enter and exit. When the protective net (22) is embedded in the first embedding slot (26) and the mounting rod (21) is embedded in the second embedding slot (27), the clamping ring (4) enters the first embedding slot (26) through the connecting slot (28) and the protective net (22) is snapped into the clamping ring (4).

5. A method for installing prefabricated stairs, based on the prefabricated stairs installation structure according to any one of claims 1-4, comprising the following steps: S1. Installation of support bar (1): Connect the two ends of the support bar (1) to the upper stair platform and the lower stair platform respectively, and install multiple support bars (1) in sequence; S2, Installation of step plates (2): Install multiple step plates (2) on the upper surface of the support strip (1) to form the steps of the staircase; S3. Installation of protective net (22): Rotate the protective net (22) of each step plate (2) in sequence so that the free end of the protective net (22) is connected to the adjacent step plate (2).

Images