Aluminum alloy single-beam stair

Abstract

An aluminum alloy single-beam stair comprises an oblique beam, a supporting column, a pedal supporting plate and pedals. The oblique beam is of a square tube structure and is obliquely arranged; the lower bottom end of the supporting column is connected with the oblique beam, notches are formed in the side walls of the left side and the right side of the upper portion of the supporting column, and first counter bores are formed in the front side and the rear side of the supporting column. The pedal supporting plate comprises a web plate and wing plates, the upper ends of the two wing plates are connected with the two ends of the web plate in the width direction respectively, second counterbores used for being matched with the first counterbores are formed in the two wing plates, and the wing plates of the pedal supporting plate are inserted into the notches of the supporting column. Screws penetrate through the first counter bores and the second counter bores to connect the pedal supporting plates with the supporting columns; the pedal is arranged on the pedal supporting plate. Through the arrangement, the mortise and tenon joint structure is applied to the aluminum alloy single-beam stair, traditional welding connection is abandoned, the welding work amount for manufacturing the aluminum alloy single-beam stair is remarkably reduced, and meanwhile structural connection is firm.

Description

Technical Field

[0001] The utility model belongs to the field of stairs, and particularly relates to an aluminum alloy single-beam staircase. Background Art

[0002] At present, the materials of household stairs on the market can be roughly divided into: steel structure stairs, wooden stairs, and steel-wood combination stairs. Steel structure stairs are widely used in the home furnishing field due to their beautiful lines, open space, and the ability to achieve various complex shapes. Common household steel structure stairs include single-beam type and double-beam type. Compared with double-beam stairs, single-beam stairs have a simple shape, are excellent in saving materials and costs, and require less space, making them suitable for modern minimalist architectural styles. This makes single-beam stairs the first choice for the decoration of many duplex houses.

[0003] Most single-beam stairs on the market now use steel structures, and their structures mainly consist of an inclined beam, support columns, tread plates, and tread plate support plates. The inclined beam and support columns are made of steel square tubes, the tread plate support plates are made of steel plates, and the tread plates are made of solid wood or fiberglass. During the manufacturing process, the inclined beam and support columns are welded together, a sealing plate is welded at the open end of the top of the support column, and threaded holes are machined on the sealing plate. A counterbore is opened in the middle of the tread plate support plate, and screw holes are opened around it. The tread plate support plate is connected and installed at the top of the support column through counterbore screws in the middle. The tread plate is fixed on the tread plate support plate through screw connections around the tread plate support plate.

[0004] In terms of structural connection of the existing steel structure single-beam staircase, a sealing plate is welded at the open end of the top of its support column, and the tread plate support plate is connected through the sealing plate. The welding workload of this connection structure is large, which is neither environmentally friendly nor economical. Summary of the Utility Model

[0005] In view of this, the utility model discloses an aluminum alloy single-beam staircase, and the specific scheme is as follows:

[0006] An aluminum alloy single-beam staircase, comprising an inclined beam, support columns, tread plate support plates, and tread plates;

[0007] The inclined beam is of a square tube structure and is obliquely arranged;

[0008] The support columns are of a square tube structure, the internal space thereof is the support column inner cavity, an inclined cut is provided at the lower bottom end thereof, the angle of the inclined cut is the same as the inclination angle of the inclined beam, the position of the inclined cut at the lower bottom end of the support column is connected to the inclined beam, notch openings are provided on the side walls of the upper left and right sides of the support column, and first counterbore holes are provided on the front and rear sides of the support column;

[0009] The pedal support plate includes a web and wing plates. The web is arranged horizontally, and there are two groups of wing plates which are arranged vertically. The upper ends of the two groups of wing plates are respectively connected to both ends in the width direction of the web. Second countersunk holes for mating with the first countersunk holes are provided on both of the two groups of wing plates. The wing plates of the pedal support plate are inserted into the notch of the support column, and screws are used to pass through the first countersunk holes and the second countersunk holes to connect the pedal support plate and the support column;

[0010] The pedal is arranged on the pedal support plate.

[0011] As a supplement to the technical solution of the present utility model, it further includes a connecting block. The connecting block is located between the two groups of wing plates of the pedal support plate. A first threaded hole is provided at the upper end of the connecting block. Screws pass through the web of the pedal support plate and are screwed into the first threaded hole to connect the web and the connecting block. The lower part of the connecting block is located inside the cavity of the support column. Second threaded holes are provided on both the front end face and the rear end face of the connecting block. Screws pass through the first countersunk holes on the support column and the second countersunk holes on the wing plates and are screwed into the second threaded holes of the connecting block to connect the support column, the pedal support plate, and the connecting block.

[0012] As a supplement to the technical solution of the present utility model, the pedal includes an upper plate, a lower plate, convex strips, and reinforcing ribs. The upper plate and the lower plate are arranged relatively spaced and parallel to each other. Reinforcing ribs are connected between the upper plate and the lower plate. A number of groups of convex strips are evenly arranged on the upper surface of the upper plate. Through holes are provided on both the lower plate of the pedal and the web of the pedal support plate. Rivets are used to pass through the through holes on the lower plate of the pedal and the web of the pedal support plate to connect the lower plate of the pedal and the pedal support plate.

[0013] As a supplement to the technical solution of the present utility model, it further includes a pedal sealing plate. The pedal sealing plate is arranged at both ends in the length direction of the pedal. First self-tapping screw bottom holes are provided at the intersection positions of the rib plates of the pedal with the upper plate and the lower plate. Through holes are provided on the pedal sealing plate. Screws pass through the through holes on the pedal sealing plate and are screwed into the first self-tapping screw bottom holes to connect the pedal sealing plate and the pedal.

[0014] As a supplement to the technical solution of the present utility model, it further includes a support plate sealing plate, and countersunk holes are provided on the support plate sealing plate; the wing plates of the pedal support plate are trapezoidal structures with longer upper sides and shorter lower sides. Second self-tapping screw bottom holes are provided on the inclined sides of the wing plates. The support plate sealing plate is obliquely arranged at the position of the inclined side of the wing plate of the pedal support plate. Screws pass through the countersunk holes on the support plate sealing plate and are screwed into the second self-tapping screw bottom holes on the inclined sides of the wing plates to connect the support plate sealing plate and the wing plates.

[0015] As a supplement to the technical solution of the present utility model, it further includes a lower layer connecting plate. A lower notch is provided at the lower bottom end of the inclined beam. The lower layer connecting plate is connected to the position of the lower notch of the inclined beam.

[0016] As a supplement to the technical solution of the present utility model, it further includes an upper connecting plate. An upper notch is provided at the upper end of the inclined beam, and the upper connecting plate is connected to the position of the upper notch of the inclined beam.

[0017] Beneficial effects: The present utility model can realize the connection between the support column and the pedal connecting plate by means of screwing, replacing the traditional welding connection method. While achieving economy and environmental protection, it ensures the connection stability between the support column and the pedal connecting plate. At the same time, the aluminum alloy single-beam staircase provided by the present utility model applies the tenon and mortise structure to the aluminum alloy structure, specifically applied to the connection between the staircase support column and the pedal support plate, and abandons the welding connection method, significantly reducing the welding workload of manufacturing the aluminum alloy single-beam staircase. At the same time, the structure connection is reliable and can bear a large load. Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the present utility model.

[0020] Figure 3 It is an assembly structural schematic diagram of the inclined beam and the support column of the present utility model.

[0021] Figure 4 It is a structural schematic diagram of the inclined beam of the present utility model.

[0022] Figure 5 It is a structural schematic diagram of the column of the present utility model.

[0023] Figure 6 It is a structural schematic diagram of the pedal support plate of the present utility model.

[0024] Figure 7 It is a sectional structural schematic diagram of the pedal of the present utility model.

[0025] Figure 8 It is a structural schematic diagram of the pedal of the present utility model.

[0026] Figure 9 It is a structural schematic diagram of the connecting block of the present utility model.

[0027] Figure 10 It is an assembly structural schematic diagram of the pedal support plate and the connecting block of the present utility model.

[0028] Figure 11 It is a sectional structural schematic diagram of the pedal support column and the connecting block of the present utility model.

[0029] Figure 12 It is an assembly structural schematic diagram of the pedal support plate and the column of the present utility model.

[0030] Figure 13This is a schematic diagram of the lower connecting plate structure of the present utility model.

[0031] Figure 14 This is a schematic diagram of the upper connecting plate structure of the present utility model.

[0032] Figure 15 This is a schematic diagram of the support plate sealing plate structure of the present utility model.

[0033] Figure 16 This is a schematic diagram of the pedal sealing plate structure of the present utility model.

[0034] In the figure: 1. Inclined beam, 2. Support column, 3. Pedal support plate, 4. Pedal, 5. Connecting block, 6. Lower connecting plate, 7. Upper connecting plate, 8. Inner cavity of the support column, 9. Inclined notch, 10. Notch, 11. First countersunk hole, 12. Second countersunk hole, 13. Upper plate, 14. Lower plate, 15. Rib, 16. Reinforcing rib, 17. First threaded hole, 18. Second threaded hole, 19. First self-tapping screw bottom hole, 20. Second self-tapping screw bottom hole, 21. Lower notch, 22. Upper notch, 23. Web, 24. Wing plate, 25. Pedal sealing plate, 26. Support plate sealing plate. Detailed implementation manners

[0035] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0036] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of 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 situations.

[0037] The utility model aims at the defects of the existing steel single-beam staircase on the market, such as heavy structure, large welding workload, easy damage of anti-corrosion coating, regular maintenance required, thick lines, and poor aesthetics, and provides an aluminum alloy single-beam staircase. All the main components of the aluminum alloy single-beam staircase are made of aluminum alloy extrusion profiles, with a light structure, slender lines, and good aesthetics, which are convenient for transportation and installation. The aluminum alloy material is corrosion-resistant and has a high recycling value. The connection between the staircase tread 4 and the inclined beam 1 incorporates a mortise and tenon structure, with reliable structural connection, good stability, and less welding workload, solving the problems existing in the existing steel structure single-beam staircase.

[0038] As Figures 1 to 16 shown, an aluminum alloy single-beam staircase includes an inclined beam 1, a support column 2, a tread support plate 3, and a tread 4.

[0039] The inclined beam 1 has a square tube structure and is obliquely arranged.

[0040] The support column 2 has a square tube structure, and its internal space is the support column inner cavity 8. Its lower bottom end is provided with an inclined cut 9, which is obliquely cut at the lower bottom end of the support column 2. The angle of the inclined cut 9 is the same as the inclination angle of the inclined beam 1. The lower bottom end of the support column 2 is connected to the inclined beam 1 through the inclined cut 9, preferably by welding. Grooves 10 are provided on the side walls of the upper left and right sides of the support column 2 for connecting with the tread support plate 3, and first countersunk holes 11 are provided on the front and rear sides of the support column 2.

[0041] The tread support plate 3 includes a web 23 and wing plates 24. The web 23 is horizontally arranged, and there are two groups of wing plates 24 which are vertically arranged. The web 23 and the wing plates 24 are integrally formed, specifically made from U-shaped aluminum profiles extruded by an extruder through precision processing procedures. The upper ends of the two groups of wing plates 24 are respectively connected to both ends of the web 23 in the width direction. Second countersunk holes 12 for cooperating with the first countersunk holes 11 are provided on both groups of wing plates 24. The wing plates 24 of the tread support plate 3 are inserted into the grooves 10 of the support column 2, and screws are used to pass through the first countersunk holes 11 and the second countersunk holes 12 to connect the tread support plate 3 and the support column 2.

[0042] The tread 4 is arranged on the tread support plate 3.

[0043] Through the above settings, the connection between the support column 2 and the tread 4 connection plate is realized by a screwing connection method, replacing the traditional welding connection method, achieving economy and environmental protection while ensuring the connection stability between the support column 2 and the tread 4 connection plate.

[0044] To further improve the connection strength between the support column 2 and the connecting plate of the pedal 4, a connecting block 5 is also included. The connecting block 5 is located between the two sets of wing plates 24 of the pedal support plate 3. A first threaded hole 17 is provided at the upper end of the connecting block 5. The screw passes through the web 23 of the pedal support plate 3 and is screwed into the first threaded hole 17 to connect the web 23 and the connecting block 5. After the pedal support plate 3 and the connecting block 5 are assembled, a tenon structure is formed. The tenon structure is inserted into the mortise groove formed by the notch 10 of the support column 2 and the inner cavity 8 of the support column, so that the support column 2 and the pedal support plate 3 are connected by a mortise and tenon structure.

[0045] The lower part of the connecting block 5 is located in the inner cavity 8 of the support column. The notch 10 of the support column 2 and the inner cavity 8 of the support column together form a mortise groove structure. Second threaded holes 18 are provided on both the front end face and the rear end face of the connecting block 5. The screw passes through the first countersunk hole 11 on the support column 2 and the second countersunk hole 12 on the wing plate 24, and its end is screwed into the second threaded hole 18 of the connecting block 5 to connect the support column 2, the pedal support plate 3, and the connecting block 5.

[0046] In terms of structural connection, the aluminum alloy single-beam staircase provided by the present utility model applies the mortise and tenon structure to the aluminum alloy structure, specifically to the connection between the staircase support column 2 and the pedal support plate 3, and abandons the welding connection method, significantly reducing the welding workload of manufacturing the aluminum alloy single-beam staircase. At the same time, the structural connection is reliable and can bear a large load.

[0047] As a preferred technical solution of the present utility model, the pedal 4 is a thin-walled aluminum alloy extrusion profile, including an upper plate 13, a lower plate 14, a rib 15, and a reinforcing rib 16. The upper plate 13 and the lower plate 14 are arranged opposite to each other at intervals and in parallel. A reinforcing rib 16 is connected between the upper plate 13 and the lower plate 14. Through the above settings, both the overall weight of the pedal 4 can be achieved and high bending strength and bending stiffness can be ensured. A plurality of groups of ribs 15 are uniformly arranged on the upper surface of the upper plate 13. After the ribs 15 are milled with a milling cutter to form grooves, they can play a role in anti-slip and wear resistance. Through holes are provided on both the lower plate 14 of the pedal 4 and the web 23 of the pedal support plate 3. Rivets are used to pass through the through holes on the lower plate 14 of the pedal 4 and the web 23 of the pedal support plate 3 to connect the lower plate 14 of the pedal 4 and the pedal support plate 3.

[0048] As a supplement to the above technical solution, a pedal cover plate 25 is also included. The pedal cover plate 25 is arranged at both ends in the length direction of the pedal 4. The pedal cover plate 25 is made of an aluminum alloy rolling thin plate. First self-tapping screw bottom holes 19 are provided at the intersection positions of the rib plate of the pedal 4 with the upper plate 13 and the lower plate 14. Through holes are provided on the pedal cover plate 25. The screw passes through the screw on the pedal cover plate 25 and is screwed into the first self-tapping screw bottom hole 19 to connect the pedal cover plate 25 and the pedal 4. Installing the pedal cover plate 25 can close the inner cavity of the pedal 4 and play a role in beautification, dust prevention, and pollution prevention.

[0049] As a preferred technical solution of the present utility model, the wing plate 24 of the pedal support plate 3 is a trapezoidal structure with a longer upper side and a shorter lower side. The lower bottom edge position of the wing plate 24 is used to be inserted into the notch 10 of the support column 2.

[0050] It further includes a support plate sealing plate 26, and the support plate sealing plate is provided with countersunk holes. A second self-tapping screw bottom hole 20 is provided on the inclined side of the wing plate 24 of the pedal support plate 3. The support plate sealing plate 26 is obliquely arranged at the inclined side position of the wing plate 24 of the pedal support plate 3. A screw is used to pass through the countersunk hole on the support plate sealing plate and be screwed into the second self-tapping screw bottom hole 20 on the inclined side of the wing plate 24 to connect the support plate sealing plate 26 and the wing plate 24. Installing the support plate sealing plate 26 can hide the rivets for fixing the pedal 4, playing a role in aesthetics, dust prevention and pollution prevention.

[0051] In terms of structural stability, after the pedal support plate 3 of the present utility model is connected to the support column 2, it can form a triangular stable support for the pedal 4, without the need to excessively increase the cross-sectional width of the inclined beam 1 and the support column 2 to improve the stability of the single-beam staircase structure. The structural design is reasonable, the connection is firm, the material utilization rate is high, the weight and cost of the aluminum alloy single-beam staircase are reduced, and the staircase line is slender, light and elegant.

[0052] As a preferred technical solution of the present utility model, it further includes a lower-layer connecting plate 6. A lower notch 21 is provided at the lower bottom end of the inclined beam 1. The lower-layer connecting plate 6 is connected to the position of the lower notch 21 of the inclined beam 1, preferably by welding. Through holes are provided on the lower-layer connecting plate 6 for connecting the bottom end of the single-beam staircase with the anchor bolts pre-embedded in the lower floor.

[0053] As a preferred technical solution of the present utility model, it further includes an upper-layer connecting plate 7. An upper notch 22 is provided at the upper top end of the inclined beam 1. The upper-layer connecting plate 7 is connected to the position of the upper notch 22 of the inclined beam 1, preferably by welding. Through holes are processed on the upper-layer connecting plate 7, and the through holes are used for connecting the top end of the single-beam staircase with the anchor bolts pre-embedded in the upper floor.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An aluminum alloy single-beam staircase, characterized in that, It includes an inclined beam (1), a support column (2), a pedal support plate (3), and a pedal (4). The inclined beam (1) is of a square tube structure and is arranged obliquely. The support column (2) is of a square tube structure, and its internal space is the support column inner cavity (8). An inclined notch (9) with the same inclination angle as that of the inclined beam (1) is provided at the lower bottom end of the support column (2). The inclined notch (9) at the lower bottom end of the support column (2) is connected to the inclined beam (1). Notch openings (10) are provided on the side walls of the upper left and right sides of the support column (2), and first countersunk holes (11) are provided on the front and rear sides of the support column (2). The pedal support plate (3) includes a web (23) and wing plates (24). The web (23) is arranged horizontally, and there are two groups of wing plates (24) which are arranged vertically. The upper ends of the two groups of wing plates (24) are respectively connected to the two ends in the width direction of the web (23). Second countersunk holes (12) for cooperating with the first countersunk holes (11) are provided on both of the two groups of wing plates (24). The wing plates (24) of the pedal support plate (3) are inserted into the notch openings (10) of the support column (2), and screws are used to pass through the first countersunk holes (11) and the second countersunk holes (12) to connect the pedal support plate (3) and the support column (2). The pedal (4) is arranged on the pedal support plate (3).

2. The aluminum alloy single-beam staircase according to claim 1, characterized in that, It further includes a connecting block (5). The connecting block (5) is located between the two groups of wing plates (24) of the pedal support plate (3). A first threaded hole (17) is provided at the upper end of the connecting block (5). Screws pass through the web (23) of the pedal support plate (3) and are screwed into the first threaded hole (17) to connect the web (23) and the connecting block (5). The lower part of the connecting block (5) is located in the support column inner cavity (8). Second threaded holes (18) are provided on both the front end face and the rear end face of the connecting block (5). Screws pass through the first countersunk holes (11) on the support column (2) and the second countersunk holes (12) on the wing plates (24) and are screwed into the second threaded holes (18) of the connecting block (5) to connect the support column (2), the pedal support plate (3), and the connecting block (5).

3. A single-beam aluminum alloy staircase according to claim 1, characterized in that, The pedal (4) includes an upper plate (13), a lower plate (14), convex strips (15), and reinforcing ribs (16). The upper plate (13) and the lower plate (14) are arranged relatively spaced and parallel to each other. Reinforcing ribs (16) are connected between the upper plate (13) and the lower plate (14). A number of groups of convex strips (15) are evenly arranged on the upper surface of the upper plate (13). Through holes are provided on both the lower plate (14) of the pedal (4) and the web (23) of the pedal support plate (3). Rivets are used to pass through the through holes on the lower plate (14) of the pedal (4) and the web (23) of the pedal support plate (3) to connect the lower plate (14) of the pedal (4) and the pedal support plate (3).

4. The aluminum alloy single-beam staircase according to claim 3, characterized in that, It further includes a pedal cover plate (25), which is arranged at both ends in the length direction of the pedal (4). At the intersection position of the rib plate of the pedal (4) with the upper plate (13) and the lower plate (14), there is a first self-tapping screw bottom hole (19). The pedal cover plate (25) is provided with a through hole, and a screw passes through the through hole on the pedal cover plate (25) and is screwed into the first self-tapping screw bottom hole (19) to connect the pedal cover plate (25) with the pedal (4).

5. The aluminum alloy single-beam staircase according to claim 1, characterized in that, It further includes a support plate cover plate (26), and the support plate cover plate (26) is provided with a countersunk hole; the wing plate (24) of the pedal support plate (3) is a trapezoidal structure with a longer upper side and a shorter lower side, and a second self-tapping screw bottom hole (20) is provided on the inclined side of the wing plate (24). The support plate cover plate (26) is obliquely arranged at the inclined side position of the wing plate (24) of the pedal support plate (3), and a screw passes through the countersunk hole on the support plate cover plate (26) and is screwed into the second self-tapping screw bottom hole (20) on the inclined side of the wing plate (24) to connect the support plate cover plate (26) with the wing plate (24).

6. A single-beam aluminum alloy staircase according to claim 1, characterized in that, It further includes a lower connecting plate (6), and a lower notch (21) is provided at the lower bottom end of the inclined beam (1), and the lower connecting plate (6) is connected at the position of the lower notch (21) of the inclined beam (1).

7. A single-beam aluminum alloy staircase according to claim 1, characterized in that, It further includes an upper connecting plate (7), and an upper notch (22) is provided at the upper top end of the inclined beam (1), and the upper connecting plate (7) is connected at the position of the upper notch (22) of the inclined beam (1).

Images