A type of assembled staircase

Abstract

This utility model relates to an assembled staircase, specifically in the field of precast concrete staircase technology. It includes staircase side beams, tread structures, and fasteners. The staircase side beams are installed on both sides of the tread structure using fasteners. The tread structure includes support beams, a starting tread, intermediate treads, and a top tread. Multiple intermediate treads are arranged between the starting tread and the top tread, and support beams are provided at the lower openings of both the starting tread and the top tread. This utility model uses two staircase side beams, support beams, a starting tread, intermediate treads, a top tread, and fasteners to form a complete staircase, facilitating installation and transportation and greatly improving convenience.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete staircase technology, specifically an assembled staircase. Background Technology

[0002] Traditional precast concrete slab staircases are generally a single, integral structure with a solid lower surface. They are heavy, costly, and inconvenient to transport and install. In particular, extra-wide precast concrete staircases are too heavy to be lifted by ordinary tower cranes. Therefore, there is an urgent need for an improved modular staircase to solve the above-mentioned problems in the existing technology. Utility Model Content

[0003] In view of the above situation and to overcome at least one defect in the prior art, this utility model provides an assembled staircase, which uses two staircase side beams and supporting beams, starting step plate, middle section step plate, top step plate and fasteners to form a whole staircase, which is easy to install and transport, and greatly improves convenience.

[0004] To achieve the above objectives, this utility model provides an assembled staircase, comprising: a staircase side beam plate, a tread structure, and fasteners; wherein, the staircase side beam plate is installed on both sides of the tread structure by means of fasteners;

[0005] The step structure includes a support beam, a starting step, intermediate step sections, and a top step; multiple intermediate step sections are provided between the starting step and the top step, and a support beam is provided at the lower opening of both the starting step and the top step.

[0006] Furthermore, the starting step and the intermediate step are L-shaped, and their two sides are connected to the side beams of the staircase on both sides.

[0007] Furthermore, the top step plate is in the shape of a straight line, and its two sides are connected to the side beams of the staircase on both sides.

[0008] Furthermore, the top of the starting step, the middle step, and the top step are all provided with anti-slip strips.

[0009] Furthermore, the fasteners include threaded sleeves and stainless steel bolts; the threaded sleeves are embedded in the supporting beams, starting treads, intermediate treads, and top treads; the stainless steel bolts are equipped with flat washers and spring washers, one end of which penetrates the stair side beam and matches the threaded sleeve thread, and the other end is an internal hex head.

[0010] Furthermore, the lower part of the staircase side beam is provided with reinforcing bars, which are high-ductility ribbed steel bars.

[0011] Furthermore, the materials used to construct the staircase side beams, support beams, and treads are high-performance concrete or UHPC ultra-high-performance concrete.

[0012] Furthermore, during the prefabrication of stair treads, translucent concrete, fair-faced concrete, or colored concrete can be selected according to requirements.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) Two side plates, supporting beams, starting step plates, middle step plates and top step plates are connected by fasteners to form a modular staircase. High ductility ribbed steel bars are set in the lower part of the side beam plate of the staircase. The high ductility ribbed steel bars can make the side beam plate more stressed and stronger in bending.

[0015] (2) Each step is equipped with four pre-embedded threaded sleeves, which can be well connected with the side beams of the stairs on both sides, greatly improving the overall integrity of the stairs. The side beams and steps of the stairs are made of high-performance concrete or ultra-high-performance concrete, which greatly improves the connection strength and support of the stairs. The stairs are made of multiple step structures connected in sequence. Compared with the traditional precast concrete stairs with a flat bottom, the weight and cost are lower. They can be manufactured on the factory assembly line and have the advantages of high strength, good overall stability, light weight, easy transportation, easy installation and low manufacturing cost.

[0016] (3) It solves the problem that the ultra-wide precast concrete staircase is too heavy to be lifted by ordinary tower cranes, and meets the design requirements.

[0017] (4) The stair treads are made of high-performance concrete or UHPC ultra-high performance concrete, which can meet the needs of personalized design and make the staircase more beautiful and bright. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the starting step plate of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the middle section of the step plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the top step plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the beam supporting this utility model;

[0023] Figure 6 This is a schematic diagram of the installation structure of this utility model.

[0024] In the diagram: 1-staircase side beam, 2-support beam, 3-starting step, 4-middle section step, 5-top step, 6-threaded sleeve, 7-stainless steel bolt, 8-screw hole, 9-anti-slip strip, 10-vertical installation through hole. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0029] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0030] The purpose of this utility model is to provide an assembled high-performance concrete staircase, which consists of two staircase side beams and supporting beams, a starting tread, a middle section tread, a top tread, and fasteners, forming a complete staircase. This facilitates installation and transportation, greatly improving convenience. The staircase side beams are internally reinforced with reinforcing steel bars, and each tread has four pre-embedded threaded sleeves for excellent connection with the side beams, significantly improving the overall integrity of the staircase. The side beams and treads are cast with high-performance concrete, greatly enhancing the connection strength and support of the staircase. The staircase is composed of multiple tread structures connected sequentially. Compared to traditional precast concrete staircases with a flat bottom, this design is lighter and less expensive, and easier to transport.

[0031] To achieve the above objectives, such as Figures 1-5 As shown, this utility model provides an assembled staircase, including: a staircase side beam plate 1, a tread structure, and fasteners; wherein, the staircase side beam plate 1 is installed on both sides of the tread structure by fasteners;

[0032] The step plate structure includes a support beam 2, a starting step plate 3, intermediate step plates 4, and a top step plate 5; multiple intermediate step plates 4 are provided between the starting step plate 3 and the top step plate 5, and a support beam 2 is provided at the lower opening of both the starting step plate 3 and the top step plate 5. The support beam 2 is provided with two vertical installation through holes 10 of a certain diameter.

[0033] The technical solution is further optimized. The starting step 3 is the first step of the stairs, and the top step 5 is the last step of the stairs. The starting step 3 and the middle step 4 are L-shaped. The two sides of the starting step 3 and the middle step 4 are respectively connected to the side beams 1 of the stairs on both sides.

[0034] To further optimize the technical solution, the top step plate 5 is in the shape of a straight line, and the two sides of the top step plate 5 are respectively connected to the side beams 1 of the stairs on both sides.

[0035] To further optimize the technical solution, anti-slip strips 9 are provided on the top of the starting step plate 3, the middle step plate 4, and the top step plate 5.

[0036] To further optimize the technical solution, the fasteners include threaded sleeves 6 and stainless steel bolts 7. The threaded sleeves 6 are embedded in the supporting beams 2, the starting treads 3, the intermediate treads 4, and the top treads 5. The stainless steel bolts 7 are equipped with flat washers and spring washers, one end of which penetrates the stair side beam 1 and is threaded to match the threaded sleeves 6, and the other end is a hexagonal head. Four threaded sleeves 6 are pre-embedded in the supporting beams 2 and treads, respectively located at the 90° corners of the supporting beams 2 and treads L and at the ends of the tread surfaces. The drilled ends of the threaded sleeves 6 face inwards so that when reinforcing bars are installed in the treads, they can be inserted into the holes to position the reinforcing bars, allowing for quick insertion without the need for binding during fabrication. The threaded sleeves 6 are embedded in the supporting beams 2 and treads, while the stainless steel bolts 7 resist the intrusion of harmful substances, increasing corrosion resistance. The hexagonal heads of the stainless steel bolts 7 are embedded inside the side beams after installation, resulting in an aesthetically pleasing overall staircase.

[0037] To further optimize the technical solution, the stair side beam 1 is customized according to the floor height and the width of the staircase. During prefabrication, screw holes 8 for supporting beams 2 and each step are reserved on the side of the side beam 1. The screw holes 8 are T-shaped round holes to allow the supporting beams 2 and each step located in the middle of the two stair side beam 1s to be screwed together. The lower part of the stair side beam 1 is provided with reinforcing steel bars. The reinforcing steel bars are high-ductility ribbed steel bars. The high-ductility ribbed steel bars can make the stair side beam 1 more stressed and stronger in bending.

[0038] To further optimize the technical solution, the materials used to manufacture the stair side beam 1, the supporting beam 2, and the tread structure are high-performance concrete or UHPC ultra-high performance concrete, so that the prefabricated components of the beam and tread can be more robust and smaller in size and lighter in weight.

[0039] To further optimize the technical solution, during the prefabrication of stair treads, translucent concrete, fair-faced concrete, or colored concrete can be selected according to requirements. In the case of personalized customization, when making translucent concrete, the bottom of the stair tread mold can be laser-printed with patterns according to personalized requirements, holes can be drilled, translucent optical fibers can be inserted, and then the mold can be poured and shaped. After reaching a certain strength, the mold can be demolded, and after curing and polishing, the translucent concrete stair tread is obtained.

[0040] Further optimization of the technical solution led to the creation of a stair tread mold with the back of the tread facing upwards. One side of the side template is fixed, while the other side can be moved and positioned according to the width of the staircase, thus solving the problem of the versatility of the stair tread mold.

[0041] The technical solution was further optimized. The lower opening of the upper support beam 2 is flush with the lower opening of the upper end of the side stair beams 1 on both sides, and the lower opening of the lower support beam 2 is flush with the lower opening of the lower end of the side stair beams 1 on both sides. The support beam 2 is provided with two vertical installation through holes 10 of a certain diameter. The vertical installation through holes 10 can be matched with the fixing bolts of the platform beam during on-site installation. The two support beams 2 of the upper and lower sides are of the same specification, which can improve the utilization rate of the mold and the production efficiency.

[0042] This utility model employs two side plates, supporting beams, a starting tread, a middle section tread, and a top tread connected by fasteners to form a prefabricated staircase structure. High-ductility ribbed steel bars are installed in the lower part of the staircase side beams, allowing for higher stress and stronger bending resistance. Each tread has four pre-embedded threaded sleeves, ensuring a good connection with the side beams and significantly improving the overall integrity of the staircase. The side beams and treads are constructed using high-performance or ultra-high-performance concrete, greatly enhancing the connection strength and support of the staircase. The staircase consists of multiple tread structures connected sequentially. Compared to traditional precast concrete staircases with a flat bottom, it is lighter and less expensive, can be mass-produced in a factory, and offers advantages such as high strength, good overall stability, light weight, easy transportation and installation, and low manufacturing cost. It solves the problem of excessive weight in ultra-wide precast concrete staircases, making them difficult to lift with ordinary tower cranes, and meets design requirements. The stair treads, made of high-performance concrete or UHPC ultra-high-performance concrete, can meet the needs of personalized design, making the staircase more beautiful and attractive.

[0043] The manufacturing method of this utility model is as follows:

[0044] 1) First, calculate the specifications and dimensions of the prefabricated stairs according to the design drawings. Then, use laser cutting to make the dimensions of the side beams and bottom plates, and cut the corresponding screw holes. Then, cut the steel plates of the supporting beams, starting steps, middle steps, and top steps and bend them. Weld T-shaped anti-slip strips on each step template to complete the mold making.

[0045] 2) Fabrication of stair side beams: Place the cut bottom plate of the side beam on the fabrication mold, surround and fix it with the edge mold made of angle iron, place a T-shaped round mold in the round hole of the bottom plate of the side beam, place high ductility ribbed steel bars near the bottom of the beam, and pour high performance concrete or UHPC ultra-high performance concrete into shape. After reaching a certain strength, demold and cure to obtain the stair side beam.

[0046] 3) Fabrication of the support beam: Place the prepared support beam mold on the mold table, surround and fix it with the side mold made of angle iron, put and fix the prepared threaded sleeve in the set position with the threaded end of the threaded sleeve facing outward, then place the reinforcing steel bar in the hole of the threaded sleeve, and then fix two vertical installation through hole molds of a certain diameter. Then pour high-performance concrete or UHPC ultra-high performance concrete to form it. After reaching a certain strength, demold and cure to prepare the support beam.

[0047] 4) Making the starting step plate: Place the prepared starting step plate mold on the mold table with the step surface facing up and the step rib facing down. Fix one mold on the mold table and the other mold can move. Fix the baffle according to the width of the stairs. Place and fix the prepared threaded sleeve in the set position with the thread of the threaded sleeve facing outward. Then place the reinforcing steel bars in the hole of the threaded sleeve and pour it with high-performance concrete or UHPC ultra-high performance concrete. After reaching a certain strength, demold and cure to prepare the starting step plate.

[0048] 5) Fabrication of intermediate stair treads: Place the prepared intermediate stair tread mold onto the mold table with the tread surface facing up and the tread ribs facing down. Fix one side on the mold table and fix the baffle on the other side according to the width of the staircase. Place and fix the prepared threaded sleeve in the set position with the threaded sleeve threaded outward. Then place the reinforcing steel bars in the hole of the threaded sleeve and pour high-performance concrete or UHPC ultra-high performance concrete to form the tread. After reaching a certain strength, demold and cure to prepare the intermediate stair tread.

[0049] 6) Fabrication of the top tread: Place the prepared top tread mold onto the mold table with the tread surface facing up and the tread ribs facing down. Fix one mold on the mold table while the other mold can move. Fix the baffle according to the width of the staircase. Place and fix the prepared threaded sleeve in the set position with the threaded sleeve threaded outward. Then place the reinforcing steel bars in the hole of the threaded sleeve and pour high-performance concrete or UHPC ultra-high performance concrete to form the top tread. After reaching a certain strength, demold and cure to complete the top tread.

[0050] 7) For example Figure 6As shown, the prepared stair unit components are connected and assembled using stainless steel bolts to obtain an assembled high-performance concrete staircase. During installation, the staircase is placed on a pre-cast stair beam. Two pre-embedded bolts on the stair beam are inserted into the reserved holes in the supporting beam and tightened. The lower part of the supporting beam is grouted. During use, the force on the treads is transferred to the two stair side beams, which bear all the load-bearing and shear forces of the staircase. This utility model has a reasonable structure, using two stair side beams, supporting beams, starting treads, middle treads, top treads, and fasteners to assemble a whole staircase. It is a prefabricated structure. High-ductility ribbed reinforcing bars are placed under the side beams, combined with high-performance concrete or ultra-high-performance concrete to form a steel-concrete structure, which greatly increases the stress on the side beams. Because high-performance concrete or ultra-high-performance concrete is used for the stair sections, the thickness of the stair sections is reduced, and the overall weight of the staircase is 20% of that of ordinary slab concrete staircases, which facilitates transportation and installation and greatly reduces the manufacturing cost.

[0051] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A modular staircase, characterized in that, include: Staircase side beams, treads, and fasteners; wherein the staircase side beams are installed on both sides of the treads by fasteners; The step structure includes a support beam, a starting step, intermediate step sections, and a top step; multiple intermediate step sections are provided between the starting step and the top step, and a support beam is provided at the lower opening of both the starting step and the top step.

2. The assembled staircase as described in claim 1, characterized in that, The starting step and the middle step are L-shaped, and their two sides are connected to the side beams of the staircase on both sides.

3. A modular staircase as described in claim 1 or 2, characterized in that, The top step is in the shape of a straight line, and its two sides are connected to the side beams of the staircase on both sides.

4. The assembled staircase as described in claim 1, characterized in that, The top of the starting step, the middle step, and the top step are all equipped with anti-slip strips.

5. A modular staircase as described in claim 1, characterized in that, The fasteners include threaded sleeves and stainless steel bolts; the threaded sleeves are embedded in the supporting beams, starting treads, intermediate treads and top treads; the stainless steel bolts are equipped with flat washers and spring washers, one end of which passes through the side beam of the staircase and matches the threaded sleeve thread, and the other end is an internal hex head.

6. A modular staircase as described in claim 1, characterized in that, The lower part of the inner part of the stair side beam is provided with reinforcing steel bars, which are high ductility ribbed steel bars.

7. A modular staircase as described in claim 1, characterized in that, The materials used to construct the staircase side beams, support beams, and treads are high-performance concrete or UHPC ultra-high-performance concrete.

8. A modular staircase as described in claim 1, characterized in that, When prefabricating stair treads, translucent concrete, fair-faced concrete, or colored concrete can be selected according to requirements.

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