A hidden pole type steel stair and a quick installation method thereof

Abstract

This invention relates to the field of building technology, specifically to a concealed steel staircase with a hanger and a rapid installation method. The invention includes a staircase inclined beam, a fish-head shaped connector, and a steel hanger. The staircase inclined beam has a hollow interior design with a hanger pull-out hole at its top. The steel hanger is placed inside the cavity before installation and can be pulled out through the hanger pull-out hole. The end of the staircase inclined beam has a fish-head shaped connector, which includes a connecting plate, a hanger connecting hole, a hanger pull-out hole, a top retaining plate, and a multi-functional retaining plate. The connecting plate is fixed to the staircase inclined beam, and a top retaining plate is fixed to its inner top. This invention significantly shortens on-site installation time by using a method of hoisting the entire staircase section into place and pulling the steel hanger out of the staircase inclined beam cavity on-site. Combined with the automatic positioning function of the arc-shaped shims and the fish-head shaped connector, positioning can be completed without complex adjustments, making the installation of the steel staircase hanger faster and more efficient.

Description

Technical Field

[0001] This invention relates to the field of building technology, specifically to a concealed steel staircase with a hanging rod and a rapid installation method. Background Technology

[0002] Suspended steel staircases are common vertical transportation components in building structures. They suspend the staircase body from the main structure through top suspension rods, which has the advantages of reducing lower support and improving spatial transparency. They are widely used in high-rise buildings, public buildings and industrial plants.

[0003] Currently, steel staircases with suspension rods are usually constructed by prefabricating components in the factory and assembling them on site. The staircase beams and suspension rods are processed separately and transported to the site for installation. During installation, the staircase beams, treads, platform plates and suspension rods and other loose parts need to be assembled on site one by one.

[0004] However, the following problems exist in the installation of suspension-type steel staircases in the existing technology: First, the design of assembling loose parts and exposing suspension rods leads to long on-site installation time and makes it difficult to achieve rapid construction; Second, the connection hole positions rely on manual alignment, resulting in large errors and a low success rate of installation on the first attempt; Third, the large number of on-site components makes transportation, stacking and management inconvenient; Fourth, the construction process is complex, the degree of standardization is low, and it is highly dependent on the skills of workers, which is not conducive to large-scale promotion. Summary of the Invention

[0005] The purpose of this invention is to provide a concealed steel staircase with a hanging rod and a quick installation method to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: On the one hand, a concealed steel staircase with hanging rods is provided, including staircase inclined beams, fish-head shaped connectors and steel hanging rods; The stair beam has a hollow interior design with a rod extraction hole at the top. The steel rod is installed inside the cavity before installation and can be pulled out through the rod extraction hole. The stair beam end is provided with a fish-head shaped connector, which includes a connecting plate, a rod connection hole, a rod pull-out hole, a top plate and a multi-functional plate; The connecting plate is fixed to the stair beam, and a top plate is fixed to its inner top. A rod pull-out hole is opened on the top plate. A rod connection hole is opened on the connecting plate, and a multi-functional plate is fixed to its inner side. The steel rod includes a rod body, a top connector, a bottom connector, and an arc-shaped washer slidably connected to the rod body. When the steel rod is pulled out and passes through the rod pull hole, the arc-shaped washer is locked inside the connecting plate and below the top plate, and the bottom connecting hole of the rod on the bottom connector automatically aligns with the rod connecting hole.

[0007] Preferably, each staircase includes two parallel stair beams, with a linear array of treads fixedly connected between the two stair beams; stair platform beams are fixed at both ends of the stair beams, and a platform slab is fixedly connected between two stair platform beams at the same height.

[0008] Preferably, the stair platform beam is a channel steel or an I-beam, and its width is half the width of the stair inclined beam.

[0009] Preferably, the top connector faces the opening end of the rod extraction hole; the top of the top connector is provided with an arc-shaped concave shape, and the bottom of the bottom connector adopts an arc-shaped design.

[0010] Preferably, the fish-head shaped connector further includes an inclined retaining plate, which is obliquely disposed on the top inner side of the connector plate.

[0011] Preferably, the outer side of the connecting plate of the fish-head shaped connector is on the same plane as the outer side of the stair beam, and the inner side of the connecting plate faces the opening of the rod pull-out hole.

[0012] Preferably, the arc-shaped gasket cannot pass through the pull-out hole of the hanger rod.

[0013] Preferably, when installing a multi-story staircase, the bottom connector in the upper steel hanger is inserted into the arc-shaped recess of the top connector in the lower steel hanger, aligning the top and bottom connector holes of the hanger.

[0014] On the other hand, a quick installation method for the aforementioned concealed suspension rod steel staircase is provided, including the following steps: S1. Pull out the steel hanger from inside the stair beam. The top of the steel hanger passes through the hanger pull hole and is pulled upwards, so that the arc-shaped pad at the bottom of the steel hanger is stuck under the top plate. S2. Adjust the steel rod to a vertical position, fix the top connector at the top to the main structure, and at the same time, automatically align the bottom connecting hole of the rod on the bottom connector with the connecting hole of the rod on the fish-head shaped connector. S3. When installing the lower staircase, align the top connection hole of the steel hanger rod, the hanger connection hole in the fish-head connector of the upper staircase, and the bottom connection hole of the upper steel hanger rod, and use bolts or pins to make through connections to complete the overall installation.

[0015] The beneficial effects of this invention are: I. This invention significantly shortens on-site installation time by using the method of hoisting the entire staircase section into place and extracting the steel hanger from the staircase beam cavity on-site. With the automatic locking function of the arc-shaped shims and fish-head-shaped connectors, positioning can be completed without complicated adjustments, making the installation of steel staircase hangers faster and more efficient.

[0016] Second, this invention features a mechanical automatic alignment design that connects the bottom connection hole of the bottom connector on the bottom connector head to the connection hole of the fish-head-shaped connector after the steel rod is pulled out. It also features automatic alignment and matching between the upper and lower steel rods through the arc-shaped concave top connector head and the arc-shaped bottom of the bottom connector head. This design effectively reduces human measurement and adjustment errors, resulting in a high success rate for installation on the first attempt and making the overall installation accuracy and construction quality more controllable.

[0017] Third, in this invention, the steel hanger is concealed inside the inclined beam of the staircase, which reduces the hoisting of loose components and high-altitude assembly operations on site. The removal, positioning, and centering of the hanger are all completed within the pre-designed structure, which effectively reduces the risks of high-altitude operations and construction safety hazards, and significantly improves the safety of the construction process.

[0018] Fourth, this invention integrates stair beams, treads, platform slabs, and concealed steel hangers into a single stair section, reducing the number of components on site and facilitating transportation, stacking, and on-site management, making component transportation and on-site management more convenient.

[0019] Fifth, this invention has clear operation steps and unified nodes from the top connector fixing to the main structure, ladder hoisting, rod extraction and positioning, automatic centering to the connection between upper and lower floors. It reduces the dependence on workers' technical experience, has a high degree of construction standardization, and is suitable for large-scale promotion and application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a plan view of the concealed steel staircase with hanging rods provided by the present invention; Figure 2 This is the present invention. Figure 1 Front view of the inclined beam section of the central staircase; Figure 3 This is the present invention. Figure 2 Top view of the inclined beam of the middle staircase; Figure 4 This is the present invention. Figure 1 A schematic diagram of the fish-head shaped connector section; Figure 5 This is the present invention. Figure 4 Side view of the connecting plate section; Figure 6 This is the present invention. Figure 4 Top view of the connecting plate section; Figure 7 This is the present invention. Figure 1 Structural diagram of the China Steel hanger section; Figure 8 This is the present invention. Figure 7 Side view of the middle rod section; Figure 9 This is a schematic diagram of the combination of the staircase inclined beam, platform beam, fish-head shaped connector, and steel hanger in this invention; Figure 10 This is the present invention. Figure 9 Enlarged view of the fish-head shaped connector; Figure 11 This is a schematic diagram of the installation of the concealed suspension rod type steel staircase provided by the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the installation of the concealed suspension rod type steel staircase provided by the present invention. Figure 2 .

[0021] The attached figures are labeled as follows: 100. Staircase inclined beam; 101. Hanger rod pull-out hole; 200. Staircase platform beam; 300. Fish head shaped connector; 301. Hanger rod connection hole; 302. Hanger rod pull-out hole; 303. Top plate; 304. Angled plate; 305. Multifunctional plate; 306. Connecting plate; 400. Steel hanger rod; 401. Rod body; 402. Top connector; 403. Hanger rod top connection hole; 404. Bottom connector; 405. Hanger rod bottom connection hole; 406. Curved gasket; 500. Step plate; 600. Platform plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 9 and Figure 10 A concealed suspension rod steel staircase, comprising: The stair beam 100 has a hollow interior design and a rod extraction hole 101 at the top, which allows the steel rod 400 to be pulled out of the cavity of the stair beam 100 as a whole. The stair platform beam 200 is a channel steel or I-beam, with a width that is half the width of the stair inclined beam 100. The stair platform beam 200 can be fixed to the external main beam to form a support. The end of the stair platform beam 200 is fixedly connected to the stair inclined beam 100 to assist in the support of the stair inclined beam 100. Each staircase includes two parallel stair beams 100, and the two stair beams 100 are fixedly connected by a linear array of treads 500. Both ends of the stair beam 100 are fixed with stair platform beams 200, and a platform slab 600 is fixedly connected between the two stair platform beams 200 at the same height.

[0024] like Figure 7 and Figure 8 A steel hanger 400 is installed in the cavity inside the stair beam 100. The steel hanger 400 includes a rod body 401, which is installed in the cavity inside the stair beam 100. A top connector 402 is fixedly connected to the top of the rod body 401. A hanger top connection hole 403 is opened on one side of the top connector 402, and the top connector 402 faces the opening end of the hanger pull-out hole 101. The bottom of the rod body 401 is fixedly connected to a bottom connector 404, and a bottom connection hole 405 for the rod is provided on one side of the bottom connector 404; The top of the top connector 402 has an arc-shaped concave shape, and the bottom of the bottom connector 404 has an arc-shaped design. When multiple staircases are installed together, the bottom connector 404 in the upper steel hanger 400 can be inserted into the arc-shaped concave shape of the top connector 402 in the lower steel hanger 400, and the top connection hole 403 and the bottom connection hole 405 of the hanger can be aligned together. An arc-shaped washer 406 is slidably connected to the rod 401 and above the bottom connector 404.

[0025] like Figure 4 , Figure 5 and Figure 6 The stair beam 100 is provided with a fish head-shaped connector 300 at its upward-sloping end. The fish head-shaped connector 300 includes a connecting plate 306, a rod connecting hole 301, a rod pull-out hole 302, a top plate 303, an inclined plate 304, and a multi-functional plate 305. One end of the connecting plate 306 is fixedly connected to the end of the stair beam 100, and the outer side of the connecting plate 306 and the outer side of the stair beam 100 are on the same plane. The inner side of the connecting plate 306 faces the opening of the rod pull-out hole 101. A horizontally arranged top plate 303 and an inclined plate 304 are fixedly connected to the top of the inner side of the connecting plate 306. The top plate 303 has a rod pull-out hole 302 through which the top connector 402 and the rod 401 can pass. The connecting plate 306 has a rod connection hole 301. A multi-functional clamping plate 305 is fixedly connected to the inner side of the connecting plate 306. The top of the multi-functional clamping plate 305 is fixedly connected to the top clamping plate 303. When the steel rod 400 is pulled out from the rod extraction hole 101 and passes through the rod pull-out hole 302, the arc-shaped washer 406 on it can be locked inside the connecting plate 306 and below the top clamping plate 303. The arc-shaped washer 406 cannot pass through the rod pull-out hole 302, but can be locked below the top clamping plate 303. At this time, the rod bottom connection hole 405 and the rod connection hole 301 on the bottom connector 404 are aligned. Bolts or pins can be used to pass through the three to make a through connection, complete the overall installation, and provide support and positioning for the top clamping plate 303 and the connecting plate 306, thereby realizing the support and positioning of the fish head-shaped connector 300.

[0026] like Figure 11 and Figure 12 When installing a multi-story staircase, the top connector 402 at the top of the uppermost steel hanger 400 can be fixed to the roof beam of the main structure. The steel hanger 400 is connected in the vertical direction through the top connector 402 and the bottom connector 404 in sequence.

[0027] The present invention provides a quick installation method for a concealed suspension rod steel staircase as follows: During the installation of a single-story staircase, the steel hanger 400 is first pulled outward from the hanger pullout hole 101 of the staircase beam 100 along the cavity, so that the steel hanger 400 passes through the hanger pullout hole 302 of the fish-head-shaped connector 300. When the steel hanger 400 is pulled out to the set position, the arc-shaped washer 406, which is slidably connected to the rod body 401, is stuck inside the connecting plate 306 and below the top plate 303. Since the arc-shaped washer 406 cannot pass through the hanger pullout hole 302, it is stuck on the lower surface of the top plate 303. At this time, the hanger bottom connection hole 405 on the bottom connector 404 is automatically aligned with the hanger connection hole 301. Then, bolts or pins are used to pass through the hanger bottom connection hole 405 and the hanger connection hole 301 to complete the fixation, thereby transmitting the hanging force of the steel hanger 400 to the staircase beam 100 through the fish-head-shaped connector 300.

[0028] During the installation of a multi-story staircase, the top connector 402 of the uppermost steel hanger 400 is first fixed to the roof beam of the main structure. Then, the steel hanger 400 of the lower staircase is pulled out from its own staircase inclined beam 100, so that the top connector 402 of the lower steel hanger 400 and the bottom connector 404 of the upper steel hanger 400 are automatically aligned through the cooperation of the arc-shaped concave and the arc-shaped bottom. The top connection hole 403, the bottom connection hole 405, and the connection hole 301 of the hanger are aligned. The pin is inserted to complete the quick connection between the upper and lower hangers and the fish-head-shaped connector 300. The staircase platform beams 200 at both ends of the staircase inclined beam 100 are connected to the external main beam and the platform plate 600 respectively, forming a stable overall load-bearing system.

[0029] Compared with related technologies, the concealed suspension rod steel staircase and its rapid installation method provided by this invention have the following advantages: This invention significantly shortens on-site installation time by using the method of hoisting the entire staircase section into place and extracting the steel hanger 400 from the cavity of the staircase inclined beam 100 on-site. With the automatic locking function of the arc-shaped shim 406 and the fish-head-shaped connector 300, positioning can be completed without complicated adjustments, making the installation of steel staircase hangers faster and more efficient.

[0030] This invention features a mechanical automatic alignment design where the bottom connection hole 405 on the bottom connector 404 of the steel rod 400 after it is pulled out aligns with the connection hole 301 on the fish-head-shaped connector 300. Furthermore, the automatic alignment between the upper and lower steel rods 400 via the concave arc of the top connector 402 and the arc-shaped bottom of the bottom connector 404 effectively reduces human measurement and adjustment errors, resulting in a high success rate for installation on the first attempt and making the overall installation accuracy and construction quality more controllable.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A steel staircase with concealed suspension rods, characterized in that, Includes staircase inclined beam (100), fish-head shaped connector (300), and steel hanger (400); The stair beam (100) has a hollow interior and a rod extraction hole (101) at the top. The steel rod (400) is installed in the cavity before installation and can be extracted through the rod extraction hole (101). The stair beam (100) is provided with a fish head-shaped connector (300) at its end, which includes a connecting plate (306), a rod connecting hole (301), a rod pull-out hole (302), a top plate (303), and a multi-functional plate (305). The connecting plate (306) is fixed to the stair beam (100), and a top plate (303) is fixed to its inner top. A rod pull hole (302) is opened on the top plate (303); a rod connection hole (301) is opened on the connecting plate (306), and a multi-functional plate (305) is fixed to its inner side. The steel rod (400) includes a rod body (401), a top connector (402), a bottom connector (404), and an arc-shaped washer (406) slidably connected to the rod body (401).

2. The concealed suspension rod steel staircase according to claim 1, characterized in that, Each staircase includes two parallel stair beams (100), and a linear array of treads (500) is fixedly connected between the two stair beams (100); stair platform beams (200) are fixed at both ends of the stair beams (100), and a platform plate (600) is fixedly connected between the two stair platform beams (200) at the same height.

3. A concealed suspension rod steel staircase according to claim 2, characterized in that, The stair platform beam (200) is a channel steel or an I-beam, and its width is half the width of the stair inclined beam (100).

4. A concealed suspension rod steel staircase according to claim 1, characterized in that, The top connector (402) faces the opening end of the rod extraction hole (101), the top of the top connector (402) is provided with an arc-shaped concave shape, and the bottom of the bottom connector (404) adopts an arc-shaped design.

5. A concealed suspension rod steel staircase according to claim 1, characterized in that, The fish-head shaped connector (300) also includes an inclined clamping plate (304), which is inclinedly disposed on the top of the inner side of the connecting plate body (306).

6. A concealed suspension rod steel staircase according to claim 5, characterized in that, The outer side of the connecting plate (306) of the fish-head-shaped connector (300) is on the same plane as the outer side of the stair beam (100), and the inner side of the connecting plate (306) faces the opening of the rod pull-out hole (101).

7. A concealed suspension rod steel staircase according to claim 6, characterized in that, The arc-shaped gasket (406) cannot pass through the rod pull hole (302).

8. A concealed suspension rod steel staircase according to claim 7, characterized in that, When the multi-story staircase is installed, the bottom connector (404) in the upper steel hanger (400) is engaged in the arc-shaped recess of the top connector (402) in the lower steel hanger (400), and the top connector hole (403) and the bottom connector hole (405) of the hanger are aligned.

9. A rapid installation method for a concealed suspension rod steel staircase, applied to the concealed suspension rod steel staircase as described in claim 1, characterized in that, Includes the following steps: S1. Pull out the steel hanger (400) from inside the stair beam (100). The top of the steel hanger (400) passes through the hanger pull hole (302) and is pulled upward, so that the arc-shaped pad (406) at the bottom of the steel hanger (400) is stuck under the top plate (303). S2. Adjust the steel rod (400) to a vertical position, fix the top connector (402) at its top to the main structure, and automatically align the bottom connecting hole (405) of the rod on the bottom connector (404) with the connecting hole (301) of the rod on the fish head connector (300). S3. When installing the lower staircase, align the top connection hole (403) of the lower staircase steel hanger (400), the hanger connection hole (301) in the fish-head connector (300) of the upper staircase, and the bottom connection hole (405) of the upper staircase steel hanger (400), and use bolts or pins to make through connections to complete the overall installation.

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