Steel structure fast-assembled stair

Abstract

This utility model relates to the field of steel structure staircases, and more particularly to a quick-assembly steel structure staircase. The quick-assembly steel structure staircase includes two symmetrically arranged base frames, with guardrails installed on the base frames. Multiple stair treads are arranged between the two base frames. Each stair tread consists of an outer positioning frame and an inner support plate, with the inner support plate embedded inside the outer positioning frame. The outer positioning frame is detachably connected to the base frame, and an auxiliary positioning component for locking the outer positioning frame is also installed on the base frame. In the quick-assembly steel structure staircase provided by this utility model, the stair treads and base frames, as well as the outer positioning frame and inner support plate within the stair treads, are all connected using a prefabricated method, making the assembly and installation of the entire staircase more convenient, and also facilitating subsequent inspection and replacement of the stair treads.

Description

Technical Field

[0001] This utility model relates to the field of steel structure staircases, and in particular to a quick-assembly steel structure staircase. Background Technology

[0002] Steel structure staircases are staircase structures made of steel materials and are one of the main types of building structures.

[0003] Steel structure staircases mainly consist of inclined support frames, handrails, and stair slabs. Each stair slab comprises a U-shaped frame upon which a flat plate is mounted. The connections between the various components—the entire stair slab and the flat plate—are primarily installed on the support frame by welding, and the flat plate is also installed on the frame by welding. Because the stair slab is the main load-bearing and foot-operated structure, it is more prone to deformation and bending. Welding installation would hinder the subsequent disassembly and replacement of deformed stair slabs.

[0004] Therefore, it is necessary to provide a new type of quick-assembly steel structure staircase to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a quick-assembly steel structure staircase.

[0006] The steel structure quick-assembly staircase provided by this utility model includes two sets of symmetrically arranged base frames, with guardrails installed on the base frames, and multiple stair slabs arranged between the two sets of base frames.

[0007] The stair tread consists of an outer positioning frame and an inner support plate, with the inner support plate embedded inside the outer positioning frame.

[0008] The outer positioning frame is detachably connected to the base frame, and an auxiliary positioning component for locking the outer positioning frame is also installed on the base frame.

[0009] Preferably, the outer positioning frame is U-shaped, and a support block is welded and fixed to the inner wall of the outer positioning frame near the bottom, so that a storage groove is formed between the upper end face of the support block and the upper end face of the outer positioning frame, and the inner support plate is embedded in the storage groove.

[0010] Preferably, a U-shaped socket is welded and fixed to one side of the base frame, forming a slot between the socket and the base frame.

[0011] Preferably, a plug plate is welded and fixed to the lower end of the outer positioning frame, and the plug plate is inserted and fixed inside the slot.

[0012] Preferably, one of the sockets also has an arc-shaped first notch, while the corresponding socket has a second notch, and the opening of the second notch faces diagonally downward.

[0013] Preferably, the outer positioning frame has through holes at both ends near the two base frames, and auxiliary positioning rods are inserted through the through holes. The auxiliary positioning rods are fixed to the base frames by nuts.

[0014] Preferably, a plurality of positioning plates arranged in a row are welded and fixed to the lower end of the inner support plate, and a positioning cylinder is welded to each of the positioning plates.

[0015] Preferably, the auxiliary positioning rod also extends through the positioning cylinder.

[0016] Preferably, the auxiliary positioning component includes a positioning leg, through which a slidingly connected pull rod passes, a locking rod is welded and fixed at one end of the pull rod, and a spring is also sleeved on the pull rod.

[0017] Preferably, when the plug is inserted into the socket, the first notch corresponds to the second notch, and the insert can be embedded in the first notch.

[0018] Compared with related technologies, the steel structure quick-assembly staircase provided by this utility model has the following beneficial effects:

[0019] This utility model provides a quick-assembly steel structure staircase in which the stair slab and the base frame, as well as the outer positioning frame and inner support plate in the stair slab, are all connected by prefabrication, which makes the assembly and installation of the entire staircase more convenient, and also facilitates the subsequent inspection and replacement of the stair slab. Attached Figure Description

[0020] Figure 1 A structural schematic diagram of a preferred embodiment of the steel structure quick-assembly staircase provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the structure connecting the stair tread and the base frame as shown in this utility model;

[0022] Figure 3 This is a structural schematic diagram of the stair tread shown in this utility model. Figure 1 ;

[0023] Figure 4 This is a structural schematic diagram of the stair tread shown in this utility model. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the structure of the outer positioning frame and auxiliary positioning component connected together, as shown in this utility model.

[0025] Figure 6 As shown in this utility model Figure 5 Enlarged structural diagram at point A.

[0026] The following are the labels in the diagram: 1. Base frame; 2. Guardrail; 3. Stair tread; 31. Outer positioning frame; 32. Support block; 33. Insert plate; 34. First notch; 35. Through hole; 36. Inner support plate; 37. Positioning plate; 38. Positioning cylinder; 4. Auxiliary positioning rod; 5. Socket; 6. Auxiliary positioning assembly; 61. Positioning leg; 62. Pull rod; 63. Embedded rod; 64. Spring. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0032] Please see Figures 1 to 6 The present invention provides a quick-assembly steel structure staircase, which includes two sets of symmetrically arranged base frames 1, a guardrail 2 installed on the base frames 1, and multiple stair slabs 3 arranged between the two sets of base frames 1.

[0033] The stair tread 3 is composed of an outer positioning frame 31 and an inner support plate 36, with the inner support plate 36 embedded inside the outer positioning frame 31.

[0034] The outer positioning frame 31 is detachably connected to the base frame 1, and an auxiliary positioning component 6 for locking the outer positioning frame 31 is also installed on the base frame 1.

[0035] It should be noted that in this device, the stair tread 3 continues the traditional design structure, including the outer positioning frame 31 and the inner support plate 36. Compared with the traditional assembly connection, this design allows the inner support plate 36 to be fixed inside the outer positioning frame 31 by embedding installation, which is more convenient for assembly operations than welding.

[0036] The outer positioning frame 31 and the base frame 1 are also detachably connected, so that the assembled stair tread 3 can be directly inserted and installed on the base frame 1, making the assembly operation more convenient. In addition, the base frame 1 is also equipped with an auxiliary positioning component 6 to further strengthen the connection between the stair tread 3 and the base frame 1, ensuring the stability of the entire staircase.

[0037] Because the outer positioning frame 31 and the inner support plate 36 in the stair tread 3 are detachably connected, and the outer positioning frame 31 and the base frame 1 are also detachably connected, it is easier to disassemble and replace the outer positioning frame 31 or the inner support plate 36 when they bend or deform during later use.

[0038] In the embodiments of this utility model, please refer to Figure 3 The outer positioning frame 31 is U-shaped. A support block 32 is welded and fixed on the inner wall of the outer positioning frame 31 near the bottom, so that a storage groove is formed between the upper surface of the support block 32 and the upper surface of the outer positioning frame 31. The inner support plate 36 is embedded in the storage groove.

[0039] It should be noted that a storage groove is formed between the outer positioning frame 31 and the inner support block 32, and the inner support plate 36 can be placed directly inside the support groove. The outer positioning frame 31 limits the inner support plate 36, while the support block 32 supports the inner support plate 36 to ensure its stability.

[0040] In the embodiments of this utility model, please refer to Figure 5 A U-shaped socket 5 is welded and fixed on one side of the base frame 1, forming a slot between the socket 5 and the base frame 1;

[0041] A plug plate 33 is welded and fixed to the lower end of the outer positioning frame 31, and the plug plate 33 is inserted and fixed inside the slot.

[0042] Meanwhile, one of the sockets 33 has an arc-shaped first notch 34, while the corresponding socket 5 has a second notch, and the opening of the second notch faces diagonally downward.

[0043] It should be noted that: the base frame 1 has a socket 5, and the outer positioning frame 31 has a plug plate 33. The plug plate 33 can be directly inserted into the socket 5 to achieve the initial installation of the outer positioning frame 31.

[0044] In the embodiments of this utility model, please refer to Figure 3 and Figure 4 The outer positioning frame 31 has through holes 35 at both ends near the two base frames 1, and auxiliary positioning rods 4 are inserted through the through holes 35. The auxiliary positioning rods 4 are fixed to the base frame 1 by nuts.

[0045] Multiple positioning plates 37 arranged in a row are welded and fixed at the lower end of the inner support plate 36. A positioning cylinder 38 is welded on each positioning plate 37, and the auxiliary positioning rod 4 passes through the positioning cylinder 38.

[0046] It should be noted that the auxiliary positioning rod 4 can pass through the outer positioning frame 31 and can be fixed to the base frame 1 by a nut. In this case, it has a further limiting effect on the outer positioning frame 31 and enhances its stability.

[0047] Meanwhile, the auxiliary positioning rod 4 also passes through the positioning cylinder 38, which can further restrict the inner support plate 36 to prevent it from falling out of the outer positioning frame 31, and can also support the inner support plate 36 and improve its compressive strength.

[0048] In the embodiments of this utility model, please refer to Figure 6 The auxiliary positioning component 6 includes a positioning foot 61, a slidingly connected pull rod 62 passing through the positioning foot 61, an embedded rod 63 welded and fixed to one end of the pull rod 62, and a spring 64 sleeved on the pull rod 62.

[0049] When the plug 33 is inserted into the socket 5, the first notch 34 corresponds to the second notch, and the insert rod 63 can be inserted into the first notch 34.

[0050] It should be noted that in the auxiliary positioning component 6, the spring force of the spring 64 allows the insert rod 63 to be inserted into the second notch on the socket 5. After the plug plate 33 is inserted into the socket 5, the insert rod 63 is simultaneously inserted into the first notch 34. At this time, the plug plate 33 can be restricted. That is, when the plug plate 33 wants to be pulled out upwards, it will squeeze the insert rod 63. Since the opening of the second notch faces diagonally downwards, the second notch will restrict the insert rod 63, making it unable to move, and thus preventing the plug plate 33 from being pulled out, ensuring the stability after installation.

[0051] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0052] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A steel structure quick-assembly staircase, comprising two symmetrically arranged base frames (1), with guardrails (2) installed on the base frames (1), and multiple stair slabs (3) arranged between the two base frames (1), characterized in that: The stair slab (3) is composed of an outer positioning frame (31) and an inner support plate (36), wherein the inner support plate (36) is embedded inside the outer positioning frame (31); The outer positioning frame (31) is detachably connected to the base frame (1), and an auxiliary positioning component (6) for locking the outer positioning frame (31) is also installed on the base frame (1).

2. The steel structure quick-assembly staircase according to claim 1, characterized in that, The outer positioning frame (31) is U-shaped. A support block (32) is welded and fixed to the inner wall of the outer positioning frame (31) near the bottom, so that a storage groove is formed between the upper surface of the support block (32) and the upper surface of the outer positioning frame (31), and the inner support plate (36) is embedded in the storage groove.

3. The steel structure quick-assembly staircase according to claim 1, characterized in that, A U-shaped socket (5) is welded and fixed on one side of the base frame (1), forming a slot between the socket (5) and the base frame (1).

4. The steel structure quick-assembly staircase according to claim 2, characterized in that, The lower end of the outer positioning frame (31) is welded and fixed with a plug plate (33), which is inserted and fixed inside the slot.

5. The steel structure quick-assembly staircase according to claim 4, characterized in that, One of the sockets (33) also has an arc-shaped first notch (34), while the corresponding socket (5) has a second notch, and the opening of the second notch faces diagonally downward.

6. The steel structure quick-assembly staircase according to claim 3, characterized in that, The outer positioning frame (31) has through holes (35) at both ends near the two base frames (1), and auxiliary positioning rods (4) are inserted through the through holes (35). The auxiliary positioning rods (4) are fixed to the base frame (1) by nuts.

7. The steel structure quick-assembly staircase according to claim 1, characterized in that, Multiple positioning plates (37) arranged in a row are welded and fixed at the lower end of the inner support plate (36), and a positioning cylinder (38) is welded on each of the positioning plates (37).

8. The steel structure quick-assembly staircase according to claim 6, characterized in that, The auxiliary positioning rod (4) also penetrates the positioning cylinder (38).

9. The steel structure quick-assembly staircase according to claim 1, characterized in that, The auxiliary positioning component (6) includes a positioning bracket (61), through which a slidingly connected pull rod (62) passes. One end of the pull rod (62) is welded and fixed with an insert rod (63), and a spring (64) is also sleeved on the pull rod (62).

10. The steel structure quick-assembly staircase according to claim 4, characterized in that, When the plug (33) is inserted into the socket (5), the first notch (34) corresponds to the second notch, and the insert (63) can be inserted into the first notch (34).

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