Fabricated UHPC spiral stair

Abstract

The utility model discloses an assembly type UHPC spiral stair which comprises a center column, a connecting plate and a plurality of stair plates, an installing plate is arranged at the bottom of the center column, the installing plate is further provided with an auxiliary fixing block, the number of the stair plates is multiple, the stair plates are evenly arranged in the height direction of the center column, and the connecting plate is connected with the connecting plate. The other ends of the stair plates are sequentially arranged in a staggered mode in the circumferential direction of the stair plates, the rotating angle between every two vertically-adjacent stair plates is 20 degrees, the connecting plates are trapezoidal, one ends of the connecting plates are fixedly connected with the center column, the other ends of the connecting plates are connected with the stair plates, and the rotating angle between every two vertically-adjacent stair plates is 20 degrees. A clamping tooth part is arranged at the bottom of each stair plate, and a first clamping block and a second clamping block are arranged on the two sides of the upper portion of each clamping tooth part, so that the whole stair is stable in structure, loads are evenly distributed, the problem of stress concentration possibly occurring in a traditional spiral stair is solved, and UHPC (ultra-high performance concrete) materials are adopted; and the stair plate and the connecting plate have higher strength and durability.

Description

Technical Field

[0001] The utility model relates to a spiral staircase, in particular to an assembled UHPC spiral staircase. Background Technique

[0002] Assembled decoration is a newly emerging form of decoration construction in recent years. As the name implies, assembled decoration means that each component required for decoration is produced in the factory and then transported to the decoration site for combined installation, eliminating the traditional operations of measuring and cutting each component at the decoration site. The construction is simpler and more convenient, which can greatly improve the construction efficiency at the decoration site, and the construction site is cleaner and more beautiful, without generating too much decoration material waste. It is a more environmentally friendly form of decoration construction.

[0003] However, the safety and stability of the existing assembled spiral staircase are not good enough, especially the supporting effect of the staircase is not stable enough. Content of the Utility Model

[0004] The purpose of the utility model is to provide an assembled UHPC spiral staircase to solve the above technical problems.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an assembled UHPC spiral staircase, including a central column, a connecting plate and a staircase plate. An installation plate is arranged at the bottom of the central column, and an auxiliary fixing block is also arranged on the installation plate. The staircase plate is arranged in multiple pieces, and the staircase plates are evenly arranged along the height direction of the central column. The other ends of the staircase plates are staggered in sequence along the circumferential direction, and the rotation angle between two adjacent staircase plates up and down is 20°. The connecting plate is trapezoidal, one end of the connecting plate is fixedly connected to the central column, and the other end is connected to the staircase plate. A fixing ring is arranged on the top of the central column, and the fixing ring is fixedly connected to the top connecting plate. A handle is also arranged on the fixing ring, and the handle is arranged along the circumferential side of the fixing ring. A fixing auxiliary plate is arranged inside the fixing ring, and the fixing auxiliary plate is connected to the central column. A tooth-locking part is arranged at the bottom of the staircase plate, and a first clamping block and a second clamping block are arranged on both sides above the tooth-locking part. A corresponding slot part is arranged on the top of the connecting plate, and a first slot and a second slot for cooperating with the first clamping block and the second clamping block are arranged on both sides of the top of the connecting plate. A buffer layer is also arranged below the slot part, and a UHPC supporting part is arranged below the buffer layer.

[0006] Preferably, the central column is connected to the connecting plate, and the staircase plate is connected to the connecting plate through expansion bolts.

[0007] Preferably, a handrail is also arranged on one side of the staircase plate.

[0008] Preferably, a lighting lamp strip is arranged on the handrail.

[0009] Preferably, a reinforcing member is further provided between the stair plate and the connecting plate.

[0010] Preferably, chamfers are provided around the stair plate and the connecting plate.

[0011] Preferably, mounting holes for installing handrails are provided at the connection between the connecting plate and the stair plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: the stair plates are uniformly arranged along the height direction of the central column, and the rotation angle between two adjacent upper and lower stair plates is 20°. At the same time, the connection structure between the stair plate and the connecting plate adopts a tooth engaging portion and a slot portion, with a first clamping block and a second clamping block provided on both sides, and a buffer pad is further provided below the tooth engaging portion, which makes it more convenient for the entire stair structure to be stable and the load to be evenly distributed, avoiding the stress concentration problem that may occur in traditional spiral staircases.

[0013] Using UHPC (Ultra-High Performance Concrete) material makes the stair plate and the connecting plate have higher strength and durability, while reducing the overall weight, facilitating transportation and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is an overall schematic diagram of an assembled UHPC spiral staircase in this embodiment;

[0016] Figure 2 is a top view of an assembled UHPC spiral staircase in this embodiment;

[0017] Figure 3 is a schematic diagram of an assembled UHPC spiral staircase in this embodiment highlighting the stair plate and the connecting plate.

[0018] In the drawings, the list of components represented by each reference numeral is as follows:

[0019] 1, central column; 2, connecting plate; 3, stair plate; 4, mounting plate; 5, auxiliary fixing block; 6, fixing ring; 7, handle; 8, fixing auxiliary plate; 9, expansion bolt; 10, handrail; 11, lighting strip; 13, mounting hole; 14, tooth engaging portion; 15, first clamping block; 16, second clamping block; 17, slot portion; 18, first slot; 19, second slot; 20, buffer layer; 21, UHPC support portion; 22, buffer pad. Detailed implementation mode

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution: an assembled UHPC rotating staircase, including a central column 1, a connecting plate 2 and a staircase plate 3. An installation plate 4 is provided at the bottom of the central column 1, and an auxiliary fixing block 5 is also provided on the installation plate 4. The staircase plates 3 are provided in multiple pieces and are evenly arranged along the height direction of the central column 1. The other ends of the staircase plates 3 are staggered in sequence along their circumferences. The rotation angle between two adjacent upper and lower staircase plates 3 is 20°. The connecting plate 2 is trapezoidal, and one end of the connecting plate 2 is fixedly connected to the central column 1, and the other end is connected to the staircase plate 3. A fixing ring 6 is provided on the top of the central column 1, and the fixing ring 6 is fixedly connected to the connecting plate 2 at the top. A handle 7 is also provided on the fixing ring 6, and the handle 7 is arranged along the circumferential side of the fixing ring 6. A fixing auxiliary plate 8 is provided inside the fixing ring 6, and the fixing auxiliary plate 8 is connected to the central column 1. A tooth engaging portion 14 is provided at the bottom of the staircase plate, and a first clamping block 15 and a second clamping block 16 are provided on both sides above the tooth engaging portion 14. A slot portion 17 corresponding to and cooperating with the tooth engaging portion 14 is provided on the top of the connecting plate 2. First slots 18 and second slots 19 cooperating with the first clamping block 15 and the second clamping block 16 are provided on both sides of the top of the connecting plate 2. A buffer layer 20 is further provided below the slot portion 17, and a UHPC support portion 21 is provided below the buffer layer 20.

[0022] Specifically, the central column 1 and the connecting plate 2, and the staircase plate 3 and the connecting plate 2 are connected by expansion bolts 9. Through the above settings, the assembled UHPC rotating staircase has high stability and safety.

[0023] Specifically, a handrail 10 is further provided on one side of the staircase plate 3. By providing the handrail 10, it makes it safer for users to go up and down the stairs. The setting of the handrail 10 not only improves the use comfort of the staircase, but also enhances the aesthetic appearance of the overall structure. The handrail 10 is made of UHPC material of the same quality as the staircase plate 3, ensuring the overall coordination and durability.

[0024] Specifically, a lighting light strip 11 is provided on the handrail 10. By providing the lighting light strip 11, it can provide lighting for users, especially at night or in a dim environment, ensuring the safety of users. The lighting light strip 11 can adopt an LED light strip.

[0025] Specifically, a buffer pad 22 is provided in the buffer layer 20, and the buffer pad 22 is provided at the connection between the latch tooth in the latch tooth part 14 and the slot part 17. By providing the buffer pad 22 and at the same time at the connection between the latch tooth in the latch tooth part 14 and the slot part 17, the occurrence of stress concentration can be better prevented.

[0026] Specifically, the stair tread 3 and the connecting plate 2 are chamfered all around. By setting the chamfers, users can avoid accidental injuries caused by sharp edges when going up and down the stairs. At the same time, the chamfer design also increases the modernity and aesthetics of the stairs.

[0027] Specifically, a mounting hole 13 for mounting the handrail 10 is provided at the connection between the connecting plate 2 and the stair tread 3. By providing the mounting hole 13 for the handrail 10, the handrail 10 is more convenient to install, and a firm connection between the handrail 10 and the stair tread 3 can be ensured.

[0028] A specific application example of this embodiment is:

[0029] When using this assembled UHPC spiral staircase, the user fixes the mounting plate 4 at the bottom of the center column 1 at a predetermined position on the ground to ensure that it is level and stable. Then, the stair slabs 3 are connected to the center column 1 through the connecting plate 2 in turn, and the rotation angle between each stair slab 3 and the center column 1 is maintained at 20°. At the same time, the first clamping block 15 and the second clamping block 16 are installed into the corresponding first clamping groove 18 and the second clamping groove 19 on the connecting plate 2. At this time, the clamping tooth part 14 and the clamping groove part 17 just match and correspond to each other to form a continuous spiral staircase structure. A UHPC support part 21 is also provided inside the connecting plate 2. UHPC is a fiber-reinforced cement-based material with premixed dry mix, mixing water and high-strength fiber as raw materials. After being fully mixed and stirred, it hardens to form ultra-high mechanical properties, ultra-high impermeability and low shrinkage properties. The premixed dry mix is ​​made of cement, special chemical admixtures, mineral admixtures, and aggregates according to grading or performance requirements. Under the same structural design and performance, the size and weight of UHPC are greatly reduced compared to ordinary concrete, making the structure of the stair slab 3 and the connecting slab 2 more stable and space-saving.

[0030] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An assembled UHPC spiral staircase, characterized by: The invention comprises a central column (1), a connecting plate (2) and a stair tread (3), wherein a mounting plate (4) is arranged at the bottom of the central column (1), and the mounting plate (4) is also provided with an auxiliary fixing block (5), the stair tread (3) is arranged in a plurality of pieces, the stair treads (3) are evenly arranged along the height direction of the central column (1), the other ends of the stair treads (3) are staggered in sequence along the circumference thereof, and the rotation angle between two upper and lower adjacent stair treads (3) is 20°, the connecting plate (2) is arranged in a trapezoidal shape, one end of the connecting plate (2) is fixedly connected to the central column (1), and the other end is connected to the stair tread (3), the top of the central column (1) is provided with a fixing ring (6), the fixing ring (6) is fixedly connected to the connecting plate (2) at the top, and the fixing ring (6) is also provided with a handle A hand (7), wherein the handle (7) is arranged along the circumference of a fixing ring (6), a fixing auxiliary plate (8) is arranged on the inner side of the fixing ring (6), and the fixing auxiliary plate (8) is connected to the central column (1); a tooth portion (14) is arranged at the bottom of the stair tread, and a first clamping block (15) and a second clamping block (16) are arranged on both sides above the tooth portion (14); a groove portion (17) corresponding to the tooth portion (14) is arranged at the top of the connecting plate (2), and a first clamping groove (18) and a second clamping groove (19) cooperating with the first clamping block (15) and the second clamping block (16) are arranged on both sides of the top of the connecting plate (2); a buffer layer (20) is further arranged below the groove portion (17), and a UHPC support portion (21) is arranged below the buffer layer (20).

2. The assembled UHPC spiral staircase according to claim 1, characterized in that: The central column (1) and the connecting plate (2), and the staircase plate (3) and the connecting plate (2) are all connected via expansion bolts (9).

3. The assembled UHPC spiral staircase according to claim 1, characterized in that: A handrail (10) is also provided on one side of the stair tread (3).

4. The assembled UHPC spiral staircase according to claim 3 is characterized in that: The handrail (10) is provided with a lighting strip (11).

5. The assembled UHPC spiral staircase according to claim 1, characterized in that: A buffer pad (22) is provided in the buffer layer (20), and the buffer pad (22) is provided at the connection between the latching teeth in the latching tooth portion (14) and the latching groove portion (17).

6. The assembled UHPC spiral staircase according to claim 1, characterized in that: The stair tread (3) and the connecting plate (2) are provided with chamfers on all four sides.

7. The assembled UHPC spiral staircase according to claim 3, characterized in that: A mounting hole (13) for mounting a handrail (10) is provided at the connection between the connecting plate (2) and the stair tread (3).

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