Steel structure stair with improved structure

Abstract

The utility model relates to the technical field of steel structures, and discloses a steel structure stair with an improved structure, which comprises a pair of stair beams, and a plurality of groups of steel-wood steps are fixed between the two stair beams. Each steel-wood step comprises front C-shaped steel, rear lower C-shaped steel, rear upper C-shaped steel, a pair of transverse U-shaped steel, a tread wood plate and a kicking surface wood plate which are transversely arranged, the two ends of the front C-shaped steel and the two ends of the rear lower C-shaped steel are fixed to the corresponding transverse U-shaped steel through screws respectively, and the transverse U-shaped steel is fixed to the corresponding stair beams through screws; the rear upper C-shaped steel is fixed to the back face of the rear lower C-shaped steel through screws and arranged in an up-down staggered mode. The tread wood plate is flatly laid and fixed to the upper end faces of the front C-shaped steel and the rear lower C-shaped steel, and the kicking surface wood plate is pressed and fixed to the front end face of the rear upper C-shaped steel and the front end face of the front C-shaped steel of the other adjacent steel-wood step on the upper side. The problems that an existing assembly type prefabricated stair is inconvenient to hoist, large in material consumption, poor in use comfort and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structures, in particular to a steel structure staircase with improved structure. Background Art

[0002] Prefabricated buildings are a new type of construction method in the construction industry. Compared with traditional construction methods, prefabricated buildings pay more attention to industrialized production and construction, thus achieving standardization, integration, modularization and prefabrication, greatly improving the production efficiency and quality of buildings. At the same time, prefabricated buildings can use a variety of building materials, such as panels, frames, concrete, steel bars, etc., to adapt to the construction of different needs and scenarios. Existing prefabricated stairs generally include cast reinforced concrete prefabricated stairs and pure steel prefabricated stairs welded from steel materials such as steel sections and steel plates. Existing prefabricated stairs have the following shortcomings: first, the reinforced concrete prefabricated stairs are of large mass. They are directly cast in the manufacturer, and the later transportation cost is large. At the same time, the installation is limited by the space at the staircase installation site, which is inconvenient to hoist and the installation is very troublesome; second, the steel plates and steel sections generally used in pure steel prefabricated stairs are relatively thick. If the thickness of the steel plates and steel sections is too small, it is easy to weld through during welding and the welding quality is unstable, thereby increasing the cost of the entire prefabricated staircase. At the same time, the comfort level of pure steel prefabricated stairs is poor. Utility Model Content

[0003] The purpose of the utility model is to provide a structurally improved steel structure staircase, whose treads and risers are made of wood, and other components are made of lightweight steel. Various steel materials are connected by screws, which can be easily installed, improve installation efficiency and improve comfort in use, and solve the problems of existing assembled prefabricated stairs such as inconvenient lifting, large consumables, and poor comfort in use.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A structurally improved steel structure staircase comprises a pair of staircase beams arranged in parallel, and a plurality of groups of obliquely linearly arranged steel-wood steps are fixed between the two staircase beams;

[0006] The steel-wood step comprises a transversely arranged front C-shaped steel, a rear lower C-shaped steel, a rear upper C-shaped steel, a pair of transverse U-shaped steels arranged symmetrically on the left and right, a tread wood board and a riser wood board. The two ends of the front C-shaped steel and the rear lower C-shaped steel are respectively fixed to the corresponding transverse U-shaped steel by screws, and the transverse U-shaped steel is fixed to the corresponding stair beam by screws; the rear upper C-shaped steel is fixed to the back of the rear lower C-shaped steel by screws and is staggered up and down, and the end of the rear lower C-shaped steel is pressed against the stair beam; the tread wood board is laid flat and fixed on the upper end surface of the front C-shaped steel and the rear lower C-shaped steel, and the riser wood board is pressed against and fixed on the front end surface of the rear upper C-shaped steel and the front end surface of the front C-shaped steel of another steel-wood step on the upper side adjacent thereto. The tread wood board, the riser wood board and the steel can be connected by glue or screws.

[0007] Through the above technical solution, the steel components are connected by screws, which can avoid the problem of easy welding penetration. At the same time, under the condition of ensuring the bearing capacity of the stairs, the thickness of the steel used can be reduced, thereby reducing the cost of steel.

[0008] The surface of the steps is made of tread wood and riser wood, using wood instead of round pure steel steps, which can further reduce steel consumption, and the wood can improve practical comfort.

[0009] The steel-wood composite staircase can be assembled on site and is easy to assemble, solving the problems of high transportation cost, on-site hoisting and inconvenient installation of existing prefabricated reinforced concrete stairs.

[0010] The utility model is further configured as follows: the staircase beam comprises an oblique long beam and a transverse short beam fixed to the upper end of the oblique long beam;

[0011] The two ends of the transverse U-shaped steel of the uppermost steel-wood step are fixed to the oblique long beam and the transverse short beam by multiple screws respectively; the transverse U-shaped steel of the other steel-wood steps are fixed to the oblique long beam by screws;

[0012] A fourth C-shaped steel is provided above the rear upper C-shaped steel of the uppermost steel-wood step. The rear upper C-shaped steel of the uppermost steel-wood step and both ends of the fourth C-shaped steel are fixed to a pair of vertical U-shaped steels by screws, and each vertical U-shaped steel is fixed to the corresponding transverse short beam.

[0013] The rear end of the transverse short beam is pressed against the beam at the floor, and the beam at the floor and the transverse short beam are fixedly connected by a first right-angle steel plate;

[0014] The lower end of the oblique long beam is against a horizontally arranged bottom plate, and the lower end of the oblique long beam is fixedly connected to the bottom plate via a second right-angle steel plate.

[0015] Through the above technical solution, the bottom plate is fixed on the lower floor, and the beam at the floor is part of the upper floor; the first right-angle steel plate can increase the connection stability between the upper end of the stair beam and the beam at the floor, the bottom plate supports the stair beam, and the second right-angle steel plate can increase the connection stability between the oblique long beam and the bottom plate.

[0016] The utility model is further configured as follows: the front C-shaped steel and the rear lower C-shaped steel are symmetrically arranged, and the rectangular large plane of the front C-shaped steel is arranged forward.

[0017] The above technical solution can facilitate the installation of the kick surface wood board.

[0018] The utility model is further configured as follows: the tread wooden board and the riser wooden board are arranged at right angles, the rear end of the tread wooden board is pressed against the riser wooden board, the lower end of the riser wooden board is pressed against the upper end surface of the rear lower C-shaped steel, and the upper end of the riser wooden board is pressed against the front end lower edge of the tread wooden board of the upper steel-wood step adjacent to it.

[0019] The beneficial effects of the utility model are:

[0020] Compared with the existing technology, its treads and risers are made of wood, and other components are made of lightweight steel. Various steel materials are connected by screws, which can be easily installed, improve installation efficiency and increase comfort in use. It solves the problems of existing prefabricated stairs that are inconvenient to lift, have large consumables, and have poor comfort in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the dispersed structure of the utility model;

[0023] Figure 3 for Figure 1 A partial enlarged view of A.

[0024] Reference numerals: 10, stair beam; 101, oblique long beam; 102, transverse short beam;

[0025] 20. Steel-wood steps; 201. Front C-shaped steel; 202. Rear lower C-shaped steel; 203. Rear upper C-shaped steel; 204. Horizontal U-shaped steel; 205. Tread wood; 206. Riser wood;

[0026] 30. The fourth C-shaped steel; 31. The vertical U-shaped steel; 32. The beam at the floor; 33. The first right-angle steel plate; 34. The bottom plate; 35. The second right-angle steel plate. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] The following references Figures 1 to 3 The utility model is described as follows:

[0029] A structurally improved steel structure staircase comprises a pair of staircase beams 10 arranged in parallel, and a plurality of groups of steel-wood steps 20 arranged obliquely and linearly are fixed between the two staircase beams 10;

[0030] The steel-wood step 20 includes a transversely arranged front C-shaped steel 201, a rear lower C-shaped steel 202, a rear upper C-shaped steel 203, a pair of transverse U-shaped steels 204 symmetrically arranged on the left and right, a tread wood board 205 and a riser wood board 206. The two ends of the front C-shaped steel 201 and the rear lower C-shaped steel 202 are respectively fixed to the corresponding transverse U-shaped steel 204 by screws, and the transverse U-shaped steel 204 is fixed to the corresponding stair beam 10 by screws; the rear upper C-shaped steel 203 is fixed to the back of the rear lower C-shaped steel 202 by screws and is staggered up and down, and the end of the rear lower C-shaped steel 202 is pressed against the stair beam 10; the tread wood board 206 is flat and fixed on the upper end surfaces of the front C-shaped steel 201 and the rear lower C-shaped steel 202, and the riser wood board 206 is pressed against and fixed on the front end surface of the rear upper C-shaped steel 203 and the front end surface of the front C-shaped steel 201 of another steel-wood step 20 adjacent to it on the upper side. The tread wood, riser wood and steel can be connected by glue or screws.

[0031] The steel components are connected by screws to avoid the problem of easy penetration of welding. At the same time, the thickness of the steel used can be reduced while ensuring the bearing capacity of the stairs, thereby reducing the cost of steel.

[0032] The surface of the steps is made of tread wood and riser wood, using wood instead of round pure steel steps, which can further reduce steel consumption, and the wood can improve practical comfort.

[0033] The steel-wood composite staircase can be assembled on site and is easy to assemble, solving the problems of high transportation cost, on-site hoisting and inconvenient installation of existing prefabricated reinforced concrete stairs.

[0034] The staircase beam 10 comprises an oblique long beam 101 and a transverse short beam 102 fixed to the upper end of the oblique long beam 101;

[0035] The two ends of the transverse U-shaped steel 204 of the uppermost steel-wood step 20 are fixed to the oblique long beam 101 and the transverse short beam 102 by multiple screws respectively; the transverse U-shaped steel 204 of the other steel-wood steps 20 are fixed to the oblique long beam 101 by screws;

[0036] A fourth C-shaped steel 30 is provided above the rear upper C-shaped steel 203 of the uppermost steel-wood step 20. The rear upper C-shaped steel 203 of the uppermost steel-wood step 20 and both ends of the fourth C-shaped steel 30 are fixed to a pair of vertical U-shaped steels 31 by screws, and each vertical U-shaped steel 31 is fixed to the corresponding transverse short beam 102.

[0037] The rear end of the transverse short beam 102 is pressed against the floor beam 32, and the floor beam 32 and the transverse short beam 102 are fixedly connected by a first right-angle steel plate 33;

[0038] The lower end of the oblique long beam 101 is against a horizontally arranged bottom plate 34 , and the lower end of the oblique long beam 101 is fixedly connected to the bottom plate 34 via a second right-angle steel plate 35 .

[0039] The bottom plate is fixed on the lower floor, and the beam at the floor is part of the upper floor; the first right-angle steel plate can increase the connection stability between the upper end of the stair beam and the beam at the floor, the bottom plate supports the stair beam, and the second right-angle steel plate can increase the connection stability between the oblique long beam and the bottom plate.

[0040] The front C-shaped steel 201 and the rear lower C-shaped steel 202 are symmetrically arranged, and the large rectangular plane of the front C-shaped steel 201 is arranged forward, which can facilitate the installation of the kick surface wood board.

[0041] The tread wooden board 205 and the riser wooden board 206 are arranged at right angles, the rear end of the tread wooden board 205 is pressed against the riser wooden board 206, the lower end of the riser wooden board 206 is pressed against the upper end surface of the rear lower C-shaped steel 202, and the upper end of the riser wooden board 206 is pressed against the front end lower edge of the tread wooden board 205 of the upper steel-wood step 20 adjacent to it.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A structurally improved steel structure staircase, comprising a pair of staircase beams (10) arranged in parallel, characterized in that: A plurality of groups of steel-wood steps (20) arranged obliquely and linearly are fixed between two staircase beams (10); The steel-wood step (20) comprises a front C-shaped steel (201) arranged transversely, a rear lower C-shaped steel (202), a rear upper C-shaped steel (203), a pair of transverse U-shaped steels (204) arranged symmetrically on the left and right, a tread wood board (205) and a riser wood board (206), the two ends of the front C-shaped steel (201) and the rear lower C-shaped steel (202) are respectively fixed to the corresponding transverse U-shaped steel (204) by screws, and the transverse U-shaped steel (204) is fixed to the corresponding stair beam (10) by screws; The upper rear C-shaped steel (203) is fixed to the back of the lower rear C-shaped steel (202) by screws and is staggered up and down, and the end of the lower rear C-shaped steel (202) is pressed against the stair beam (10); the tread wood board is laid flat and fixed on the upper end surfaces of the front C-shaped steel (201) and the lower rear C-shaped steel (202), and the riser wood board (206) is pressed against and fixed on the front end surface of the upper rear C-shaped steel (203) and the front end surface of the front C-shaped steel (201) of another steel-wood step (20) adjacent to it.

2. The structurally improved steel staircase according to claim 1, characterized in that: The staircase beam (10) comprises an oblique long beam (101) and a transverse short beam (102) fixed to the upper end of the oblique long beam (101); The two ends of the transverse U-shaped steel (204) of the uppermost steel-wood step (20) are respectively fixed to the oblique long beam (101) and the transverse short beam (102) by a plurality of screws; the transverse U-shaped steel (204) of the other steel-wood steps (20) are fixed to the oblique long beam (101) by screws; A fourth C-shaped steel (30) is provided above the rear upper C-shaped steel (203) of the uppermost steel-wood step (20), and both ends of the rear upper C-shaped steel (203) and the fourth C-shaped steel (30) of the uppermost steel-wood step (20) are fixed to a pair of vertical U-shaped steels (31) by screws, and each vertical U-shaped steel (31) is fixed to a corresponding transverse short beam (102).

3. The structurally improved steel staircase according to claim 2, characterized in that: The rear end of the transverse short beam (102) is pressed against the floor beam (32), and the floor beam (32) and the transverse short beam (102) are fixedly connected via a first right-angle steel plate (33); The lower end of the oblique long beam (101) is abutted against a horizontally arranged bottom plate (34), and the lower end of the oblique long beam (101) and the bottom plate (34) are fixedly connected via a second right-angle steel plate (35).

4. The structurally improved steel staircase according to claim 1, characterized in that: The front C-shaped steel (201) and the rear lower C-shaped steel (202) are symmetrically arranged, and the rectangular large plane of the front C-shaped steel (201) is arranged forward.

5. The structurally improved steel staircase according to claim 4, characterized in that: The tread wood board (205) and the riser wood board (206) are arranged at right angles, the rear end of the tread wood board (205) is pressed against the riser wood board (206), the lower end of the riser wood board (206) is pressed against the upper end surface of the rear lower C-shaped steel (202), and the upper end of the riser wood board (206) is pressed against the front lower edge of the tread wood board (205) of the upper steel-wood step (20) adjacent thereto.

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