Steel stair structure

Abstract

The utility model relates to the technical field of buildings, and discloses a steel stair structure which comprises stair beams, steps, connecting pieces and guardrails, the two stair beams are oppositely arranged, the two ends of the stair beams are connected with a building structure respectively, the multiple steps are arranged between the two stair beams, the connecting pieces are fixedly connected with the stair beams, installation grooves are formed in the stair beams and suitable for being connected with the building structure in a clamped mode, and the guardrails are arranged on the stair beams. According to the steel stair, the installation groove is formed in the connecting piece, the installation groove is connected with the building structure in a clamped mode, limiting clamping connection can be formed between the connecting piece and the building structure, when the steel stair bears loads, the installation groove in the connecting piece is tightly connected with the building structure in a clamped mode, and therefore the steel stair is not prone to falling off. Therefore, the stability and the safety of the steel stair are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, and particularly relates to a steel staircase structure. Background Art

[0002] A staircase is a component used for vertical transportation between floors in a building and is used for traffic connection between floors and when there is a large height difference. A staircase consists of a flight of continuous steps, a landing, and enclosing members, etc.

[0003] Staircases are usually divided into reinforced concrete staircases, steel staircases, wooden staircases, etc. A steel staircase refers to a staircase made of various general steel profiles and adapted to the main structure, and the joints of each component are connected by methods such as bolts, anchors, and welding.

[0004] In the prior art, steel staircases are usually fixedly connected to the building structure by bolts. After being used for a period of time, the connecting bolts are prone to loosening, resulting in an insecure connection between the steel staircase and the building structure and posing a safety hazard during use. Summary of the Utility Model

[0005] In view of this, the utility model provides a steel staircase structure to solve the problem that the connection between the steel staircase and the building structure by bolts in the prior art is prone to loosening.

[0006] The utility model provides a steel staircase structure, which includes stringers, treads, connectors, and handrails. The two stringers are arranged opposite to each other, and the two ends of the stringers are respectively connected to the building structure. A plurality of treads are arranged between the two stringers. The connector is fixedly connected to the stringer. The connector is provided with an installation groove, and the installation groove is adapted to be clamped with the building structure. The handrail is fixedly connected to the stringer, and a walking passage is formed between the handrails.

[0007] Advantageous Effects: By providing an installation groove on the connector and clamping the installation groove with the building structure, a limit clamping connection can be formed between the connector and the building structure. When a load is borne on the steel staircase, the installation groove on the connector is tightly clamped with the building structure, thus ensuring the stability and safety of the steel staircase.

[0008] In an optional embodiment, the steel staircase structure further includes a landing plate, which is arranged at the top and bottom of the stringer.

[0009] Advantageous Effects: By providing a landing plate, it can be used for the steel staircase to turn between floors, connect floors, or allow users to rest after climbing a certain distance.

[0010] In an optional embodiment, the steel staircase structure further includes a skirting board, which is arranged at the landing plate and is connected to the handrail.

[0011] Beneficial effects: By providing a kickboard in the present utility model, the protection and safety at the platform board are enhanced, preventing people or objects from falling through the gap between the guardrail and the platform board.

[0012] In an alternative embodiment, the guardrail includes vertical poles and handrails. The vertical poles are vertically arranged, with the bottom of the vertical poles fixedly connected to the ladder beam, and the handrails are fixedly connected to the tops of the vertical poles.

[0013] In an alternative embodiment, the guardrail further includes a base, the base is fixedly connected to the ladder beam, and the bottom of the vertical pole is fixedly connected to the base.

[0014] Beneficial effects: By providing a base in the present utility model, it is convenient to firmly install the vertical pole and the ladder beam.

[0015] In an alternative embodiment, the guardrail further includes crossbars, the crossbars are arranged between adjacent vertical poles, and the crossbars are located below the handrails.

[0016] Beneficial effects: By providing crossbars in the present utility model, the protection of the guardrail can be increased, preventing objects or people from falling through the gap between the handrail and the platform board.

[0017] In an alternative embodiment, the guardrail further includes sleeves, both ends of adjacent handrails, both ends of adjacent crossbars, the vertical pole and the handrail, and the vertical pole and the crossbar are detachably connected to the sleeves.

[0018] Beneficial effects: By providing sleeves in the present utility model, it is convenient to connect adjacent handrails, adjacent crossbars and the vertical pole.

[0019] In an alternative embodiment, the steel staircase structure further includes a bottom plate assembly, the bottom plate assembly is fixedly connected to the ladder beam, and the treads are fixedly installed on the top of the bottom plate assembly.

[0020] Beneficial effects: By providing a bottom plate assembly at the bottom of the treads in the present utility model, the support and load-bearing capacity of the treads are increased, improving the stability and safety of the use of the steel staircase.

[0021] In an alternative embodiment, the bottom plate assembly includes a first plate body and a second plate body. The first plate body is vertically arranged, the first plate body is fixedly installed on the opposite side of the ladder beam, the second plate body is horizontally arranged, the second plate body is fixedly connected to the top of the first plate body, and the treads are fixedly installed on the top of the second plate body.

[0022] In an alternative embodiment, the bottom plate assembly further includes rib plates, the rib plates are arranged at the bottom of the second plate body and are fixedly connected to the first plate body.

[0023] Beneficial effects: By providing rib plates on the bottom plate assembly in the present utility model, the bending resistance and shear resistance of the bottom plate assembly are increased, thereby improving the load-bearing capacity of the steel staircase. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Stereoscopic schematic diagram of a steel staircase structure according to an embodiment of the present utility model;

[0026] Figure 2 Another perspective stereoscopic schematic diagram of a steel staircase structure according to an embodiment of the present utility model;

[0027] Figure 3 For Figure 2 Partial enlarged schematic diagram of A in

[0028] Figure 4 For Figure 2 Partial enlarged schematic diagram of B in

[0029] Figure 5 Schematic diagram of a connecting member in a steel staircase structure according to an embodiment of the present utility model;

[0030] Figure 6 Schematic diagram of a sleeve in a steel staircase structure according to an embodiment of the present utility model;

[0031] Figure 7 Another schematic diagram of a sleeve in a steel staircase structure according to an embodiment of the present utility model;

[0032] Figure 8 Schematic diagram of a base in a steel staircase structure according to an embodiment of the present utility model;

[0033] Figure 9 Schematic diagram of a bottom plate assembly in a steel staircase structure according to an embodiment of the present utility model.

[0034] Explanation of reference numerals:

[0035] 1, ladder beam;

[0036] 2, step;

[0037] 3, connecting member; 301, installation groove;

[0038] 4, guardrail; 401, vertical pole; 402, handrail; 403, base; 4031, mounting plate; 4032, mounting seat; 404, cross bar; 405, sleeve;

[0039] 5, platform board;

[0040] 6. Skirting board

[0041] 7. Bottom plate assembly; 701. First plate body; 702. Second plate body; 703. Rib plate Specific embodiments

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0043] The following will be described in conjunction with Figures 1 to 9 , the embodiments of the present utility model

[0044] According to an embodiment of the present utility model, as Figures 1 to 9 shown, a steel staircase structure is provided, including a ladder beam 1, steps 2, a connecting member 3, and a guardrail 4. The two ladder beams 1 are arranged oppositely, and both ends of the ladder beam 1 are respectively connected to the building structure. A plurality of steps 2 are arranged between the two ladder beams 1. The connecting member 3 is fixedly connected to the ladder beam 1. An installation groove 301 is provided on the connecting member 3, and the installation groove 301 is adapted to be clamped with the building structure. The guardrail 4 is fixedly connected to the ladder beam 1, and a walking passage is formed between the guardrails 4

[0045] Specifically, in this embodiment, no specific limitation is imposed on the ladder beam 1. To conform to the actual situation, in this embodiment, the ladder beam 1 is in a "Z" shape. The ladder beam 1 includes an upper horizontal section, a lower horizontal section, and an inclined section. The upper horizontal section is used to be connected to the upper building structure, and the lower horizontal section is used to be connected to the lower building structure. In this embodiment, no specific limitation is imposed on the material of the ladder beam 1. To conform to the actual situation, in this embodiment, the ladder beam 1 is made of [12.6 channel steel. The vertical height of the ladder beam 1 is not greater than 6 m, and the horizontal span is not greater than 3 m. An anti-corrosion coating is applied on the ladder beam 1. To make the ladder beam 1 more prominent, the ladder beam 1 can be painted orange

[0046] In this embodiment, no specific limitation is imposed on the building structure. To conform to the actual situation, in this embodiment, the building structure can be a steel structure building. Steel beams are provided in adjacent floors of the steel structure building. The upper horizontal section and the lower horizontal section of the ladder beam 1 are connected to the steel beams. In this embodiment, the steel beam can be made of I-beam

[0047] In this embodiment, the connector 3 is a rectangular structure, and a horizontally opened installation groove 103 is provided on one side of the connector 3. The connector 3 is vertically connected to the bottom of the upper horizontal section and the lower horizontal section of the ladder beam 1. The installation groove 301 is clamped with the upper flange plate of the I-beam, and the installation groove 301 is oriented toward the inclined section. In this embodiment, the connector 3 can be fixedly connected to the ladder beam 1 by bolts or rivets, or by welding.

[0048] In this embodiment, two ladder beams 1 are symmetrically provided, and the steps 2 can be fixedly connected to the ladder beams 1 on both sides by welding or bolts. In this embodiment, no specific limitation is made to the steps 2. To conform to the actual situation, the steps in this embodiment are made of 4mm thick patterned steel plates, with a width of 120mm, and a vertical spacing of 250mm.

[0049] In this embodiment, the guardrail 4 is vertically arranged on the top of the ladder beam 1, and the guardrails 4 between adjacent floors are connected.

[0050] The utility model provides an installation groove 301 on the connecting member 3, and clamps the installation groove 301 with the building structure, so that a limited clamping connection can be formed between the connecting member 3 and the building structure. When the steel staircase is subjected to a load, the installation groove 301 on the connecting member 3 is tightly clamped with the building structure, thereby ensuring the stability and safety of the steel staircase.

[0051] In one embodiment, Figure 1 As shown, the steel staircase structure further includes a platform plate 5 , which is arranged on the top and bottom of the ladder beam 1 .

[0052] Specifically, in this embodiment, the platform plate 5 is arranged at the top of the upper horizontal section and the lower horizontal section of the ladder beam 1, the steel staircase structures of adjacent floors are connected to the platform plates 5 on the same floor, and the guardrail 4 is arranged on the periphery of the platform plate 5, so that a passage leading to the upper and lower floors is formed on the platform plate 5.

[0053] The utility model can be used for the steel staircase to turn between floors, connect floors or be used for users to rest after climbing a certain distance by arranging the platform plate 5.

[0054] In one embodiment, Figure 1 and Figure 2 As shown, the steel staircase structure further includes a skirting board 6 , which is arranged at the platform board 5 and connected to the guardrail 4 .

[0055] Specifically, in the present embodiment, three skirting boards 6 are provided, the skirting boards 6 are located above the platform board 5, the skirting boards 6 are fixedly connected to the guardrail 4, and the three skirting boards 6 enclose a protective space.

[0056] The utility model increases the protection and safety at the platform board 5 by arranging a kickboard 6, preventing people or objects from falling through the gap between the guardrail 4 and the platform board 5.

[0057] In one embodiment, as Figures 1 to 3 shown, the guardrail 4 includes a vertical rod 401 and a handrail 402. The vertical rod 401 is vertically arranged, and the bottom of the vertical rod 401 is fixedly connected to the ladder beam 1. The handrail 402 is fixedly connected to the top of the vertical rod 401.

[0058] Specifically, in this embodiment, no specific limitation is imposed on the vertical rod 401 and the handrail 402. To conform to the actual situation, in this embodiment, both the vertical rod 401 and the handrail 402 are made of Φ30×2.5 steel pipes. The height of the handrail 402 is 1.2 m, and the distance between the vertical rods 401 is not greater than 2 m.

[0059] In one embodiment, as Figures 1 to 3 shown, the guardrail 4 further includes a base 403. The base 403 is fixedly connected to the ladder beam 1, and the bottom of the vertical rod 401 is fixedly connected to the base 403.

[0060] Specifically, in this embodiment, the base 403 includes a mounting plate 4031 and a mounting seat 4032. The mounting plate 4031 is fixedly connected to the ladder beam 1 by bolts. The mounting seat 4032 is vertically arranged on the mounting plate 4031. Bolt mounting holes are provided on both sides of the mounting seat 4032 on the mounting plate 4031, and the vertical rod 401 is sleeved on the mounting seat 4032.

[0061] The utility model facilitates the firm installation of the vertical rod 401 and the ladder beam 1 by arranging the base 403.

[0062] In one embodiment, as Figures 1 to 3 shown, the guardrail 4 further includes a cross bar 404. The cross bar 404 is arranged between adjacent vertical rods 401 and is located below the handrail 402.

[0063] Specifically, in this embodiment, the cross bar 404 is made of Φ30×2.5 steel pipe. The height of the cross bar 404 is 0.6 m. Red and white anti-corrosion paint is sprayed on the vertical rod 401, the cross bar 404 and the handrail 402, and the length of each painted section is preferably 300 mm.

[0064] The utility model can increase the protection of the guardrail 4 by arranging the cross bar 404, preventing objects or people from falling through the gap between the handrail 402 and the platform board 5.

[0065] In one embodiment, as Figures 1 to 3 shown, the guardrail 4 further includes a sleeve 405. Both ends of adjacent handrails 402, both ends of adjacent cross bars 404, the vertical rod 401 and the handrail 402, and the vertical rod 401 and the cross bar 404 are detachably connected to the sleeve 405.

[0066] Specifically, in this embodiment, the sleeve 405 is divided into a three-way sleeve 405 and a four-way sleeve 405. The three-way sleeve 405 is used to connect the adjacent handrail 402 and the vertical rod 401, and the four-way sleeve 405 is used to connect the adjacent cross bar 404 and the vertical rod 401.

[0067] By providing the sleeve 405, the present utility model facilitates the connection of the adjacent handrail 402, the adjacent cross bar 404 and the vertical rod 401.

[0068] In one embodiment, as Figure 1 、 Figure 2 and Figure 4 shown, the steel staircase structure further includes a bottom plate assembly 7. The bottom plate assembly 7 is fixedly connected to the ladder beam 1, and the tread 2 is fixedly installed on the top of the bottom plate assembly 7.

[0069] Specifically, in this embodiment, the tread 2 is welded to the three corners of the bottom plate assembly 7, and the bottom plate assembly 7 is fixedly connected to the inner side wall of the ladder beam 1 by bolts.

[0070] By providing the bottom plate assembly 7 at the bottom of the tread 2, the present utility model increases the support and load-bearing capacity of the tread 2, and improves the stability and safety of the use of the steel staircase.

[0071] In one embodiment, as Figure 4 shown, the bottom plate assembly 7 includes a first plate body 701 and a second plate body 702. The first plate body 701 is vertically arranged and fixedly installed on the opposite sides of the ladder beam 1. The second plate body 702 is horizontally arranged and fixedly connected to the top of the first plate body 701. The tread 2 is fixedly installed on the top of the second plate body 702.

[0072] Specifically, in this embodiment, the first plate body 701 and the second plate body 702 can be made by welding two steel plates, or can be made of angle steel.

[0073] In one embodiment, as Figure 4 shown, the bottom plate assembly 7 further includes a rib plate 703. The rib plate 703 is arranged at the bottom of the second plate body 702 and fixedly connected to the first plate body 701.

[0074] Specifically, in this embodiment, the rib plate 703 is in a triangular structure and is welded to the first plate body 701 and the second plate body 702. Two bolt holes are provided on the first plate body 701 for fixedly connecting to the ladder beam 1 by bolts.

[0075] By providing the rib plate 703 on the bottom plate assembly 7, the present utility model increases the bending resistance and shear resistance of the bottom plate assembly 7, thereby improving the load-bearing capacity of the steel staircase.

[0076] The utility model has the advantages that the connection nodes of the steel staircase structure are reliable and the safety is high. All components of the steel staircase structure are assembled parts, the on-site construction is convenient and efficient, and at the same time, all parts can be disassembled, which is convenient for turnover and repeated utilization, and reduces the construction cost.

[0077] Although the embodiments of the present utility model have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A steel staircase structure, characterized in that: include: Ladder beams (1), wherein two ladder beams (1) are arranged opposite to each other, and both ends of the ladder beams (1) are respectively connected to the building structure; Steps (2), a plurality of the steps (2) being arranged between two ladder beams (1); A connecting member (3), the connecting member (3) being fixedly connected to the ladder beam (1), the connecting member (3) being provided with a mounting groove (301), the mounting groove (301) being suitable for being snap-fitted with the building structure; A guardrail (4), wherein the guardrail (4) is fixedly connected to the ladder beam (1), and a walking passage is formed between the guardrails (4).

2. The steel staircase structure according to claim 1, characterized in that: Also includes: A platform plate (5), wherein the platform plate (5) is arranged at the top and the bottom of the ladder beam (1).

3. The steel staircase structure according to claim 2, characterized in that: Also includes: A skirting board (6), wherein the skirting board (6) is arranged on the platform board (5) and connected to the guardrail (4).

4. The steel staircase structure according to claim 1, characterized in that: The guardrail (4) comprises: A vertical rod (401), wherein the vertical rod (401) is arranged vertically, and the bottom of the vertical rod (401) is fixedly connected to the ladder beam (1); A handrail (402), wherein the handrail (402) is fixedly connected to the top of the upright pole (401).

5. The steel staircase structure according to claim 4, characterized in that: The guardrail (4) further comprises: A base (403), wherein the base (403) is fixedly connected to the ladder beam (1), and the bottom of the vertical rod (401) is fixedly connected to the base (403).

6. The steel staircase structure according to claim 4, characterized in that: The guardrail (4) further comprises: A crossbar (404), wherein the crossbar (404) is arranged between adjacent vertical bars (401), and the crossbar (404) is located below the handrail (402).

7. The steel staircase structure according to claim 6, characterized in that: The guardrail (4) further comprises: The sleeve (405), the two ends adjacent to the handrail (402), the two ends adjacent to the crossbar (404), the vertical bar (401) and the handrail (402), and the vertical bar (401) and the crossbar (404) are all detachably connected to the sleeve (405).

8. The steel staircase structure according to any one of claims 1 to 7, characterized in that: Also includes: A base plate assembly (7), wherein the base plate assembly (7) is fixedly connected to the ladder beam (1), and the step (2) is fixedly mounted on the top of the base plate assembly (7).

9. The steel staircase structure according to claim 8, characterized in that: The base plate assembly (7) comprises: A first plate (701), the first plate (701) is arranged vertically, and the first plate (701) is fixedly mounted on a side opposite to the ladder beam (1); The second plate body (702) is horizontally arranged, the second plate body (702) is fixedly connected to the top of the first plate body (701), and the step (2) is fixedly installed on the top of the second plate body (702).

10. The steel staircase structure according to claim 9, characterized in that: The base plate assembly (7) further comprises: A rib plate (703), wherein the rib plate (703) is arranged at the bottom of the second plate body (702) and is fixedly connected to the first plate body (701).

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