A stair platform

Abstract

The utility model belongs to stair platform reconstruction technical field provides a kind of stair platform, including steel beam, ladder beam anchor plate, platform backing plate, downlink platform rib plate, uplink platform rib plate, end plate, uplink section backing plate, uplink section rib plate, stiffening rib.The stair platform, after cutting off the ladder beam and platform plate of the part of influence net height, by the form of increasing steel beam, end plate and uplink section backing plate in proper position, it provides support for the ladder section and platform plate that lose support again, and the span and support condition of ladder section plate are not changed to avoid the removal of ladder section plate, can greatly reduce the removal range.At the same time, since the new components are all made in factory, the installation time is short, and the force can be applied after installation, so the downtime of stairwell is greatly shortened, thereby reducing the inconvenience of use and the fire risk during the closed construction of fire stairs.

Description

Technical Field

[0001] This utility model belongs to the field of stair platform renovation technology, specifically relating to a stair platform. Background Technology

[0002] In building structures, there are minimum requirements for the clear height of fire escape staircases. Due to on-site construction errors, design drawings mistakes, renovations of existing buildings (converting non-fire escape staircases into fire escape staircases), or updates to regulations that render the original staircase clear height unacceptable, situations often arise where it is necessary to increase the clear height of staircases.

[0003] In the aforementioned situations, the stair beams that protrude from the landing slab often affect the clear height of the staircase. The conventional approach is to cut off the stair beam and a section of the landing slab, and then rebuild the stair beam in a location that does not affect the clear height. However, since the span of the stair flight will increase accordingly, the stair slab connected to the stair beam needs to be rebuilt. This approach involves a large area of ​​on-site demolition, a significant amount of new staircase work, a considerable amount of wet work, and a long construction period, resulting in a significant impact on daily use. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a stair platform that can solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a stair platform, comprising a steel beam, a stair beam anchor plate, a platform support plate, a descending platform rib plate, an ascending platform rib plate, an end plate, an ascending section support plate, an ascending section rib plate, and stiffening ribs; The steel beam is set on the platform beam, the ladder beam anchor plate is set on the ladder beam, the platform support plate is connected to the steel beam and the ladder beam anchor plate respectively, the top of the platform support plate is attached to the bottom of the platform plate, and the descending platform rib plate is connected to the steel beam, the platform support plate and the ladder beam anchor plate respectively; The end plate is connected to the platform support plate, and the upward platform ribs are respectively connected to the steel beam, the platform support plate, and the end plate; The ascending section support plate is connected to the end plate, the ascending section ribs are connected to the ascending section support plate and the end plate respectively, the stiffening ribs are connected to the ascending section support plate and the ascending section ribs respectively, the platform support plate is provided with a clearance groove adapted to the ascending section support plate, the top of the ascending section support plate is flush with the top of the platform plate, and the ascending section support plate is used to support the ascending stair section.

[0006] Preferably, the platform beam also includes a steel beam anchor plate, wherein anchor bolts are embedded in the platform beam, the steel beam anchor plate is fixed to the platform beam by the anchor bolts, and the steel beam is welded to the steel beam anchor plate.

[0007] Preferably, anchor bolts are embedded in the ladder beam, and the ladder beam anchor plate is fixed to the ladder beam by the anchor bolts.

[0008] Preferably, the platform support plate is welded to the steel beam and the ladder beam anchor plate respectively.

[0009] Preferably, the descending platform ribs are welded to the steel beam, the platform support plate, and the ladder beam anchor plate, respectively.

[0010] Preferably, the end plate is welded to the platform support plate.

[0011] Preferably, the upward platform ribs are welded to the steel beam, the platform support plate, and the end plate, respectively.

[0012] Preferably, the upper section support plate is welded to the end plate.

[0013] Preferably, the upper section rib is welded to the upper section support plate and the end plate respectively.

[0014] Preferably, the stiffening ribs are welded to the upper section support plate and the upper section rib plate, respectively.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: This utility model provides a stair platform that, after removing the stair beams and platform slabs that affect the clearance height, provides new support for the unsupported stair sections and platform slabs by adding steel beams, end plates, and upper section support plates at appropriate locations. This avoids the need to remove the stair section slabs without altering their span or support conditions, significantly reducing the scope of demolition. Furthermore, since the new components are all manufactured in the factory, on-site installation time is short, and they can bear load immediately after installation, greatly shortening the downtime of the stairwell and reducing inconvenience and fire risks during fire escape staircase closure construction. Attached Figure Description

[0016] Figure 1 This is a floor plan of an existing staircase (with an upward flight of stairs); Figure 2 for Figure 1 Schematic diagram of the cross section at point AA; Figure 3 A plan view of a stair platform (with an upward stair section) provided for an embodiment of this utility model; Figure 4 for Figure 3 Schematic diagram of the cross section at point BB; Figure 5 for Figure 3 Schematic diagram of the cross section at point CC; Figure 6 for Figure 3 Schematic diagram of the cross section at DD; Figure 7 A schematic diagram showing the removal of the stair beam and platform slab of a stair platform according to an embodiment of this utility model; Figure 8 This is a floor plan of an existing staircase (without an upward flight of stairs); Figure 9 for Figure 8 Schematic diagram of the cross section at EE; Figure 10 A plan view of a stair platform (without an upward stair section) provided for an embodiment of this utility model; Figure 11 for Figure 10 Schematic diagram of the cross section at FF in the diagram; Figure 12 for Figure 10 Schematic diagram of the cross section at point GG; Figure 13 for Figure 10 Schematic diagram of the cross section at HH in the diagram; Figure 14 This is a schematic elevation view of the upper section support of a stair platform provided in an embodiment of the present utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Staircase clearance height limit line; 2. Ladder beam; 3. Upward staircase; 4. Platform board; 5. Platform beams; 6. Downward stair section; 7. Steel beams; 8. Downward platform ribs; 9. Platform tray; 10. Ladder beam anchor plate; 11. Steel beam anchor plate; 12. End plate; 13. Upper section rib; 14. Upward section support plate; 15. Reinforcing ribs; 16. Connecting plate; 17. Connecting bolts; 18. Area to be excised; 19. Connecting hole; 20. Rib plate of the upward platform. Detailed Implementation

[0018] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0019] When the downward protruding platform slab 4 of the ladder beam 2 affects the net height, it is necessary to cut off the ladder beam 2 below the upward ladder section 3 and a section of the platform slab 4, which will inevitably cause the upward ladder section 3 to lose its support.

[0020] For example, see Figure 1-2 When the stair beam 2 protrudes downwards to below the staircase clearance limit line 1, the portion of the stair beam 2 located below the upward stair flight 3 should be cut off, while the remaining portion remains connected to the downward stair flight 6. Simultaneously, the area of ​​the platform slab 4 adjacent to the cut-off stair beam 2 should also be cut off, specifically the area to be cut off 18 as follows: Figure 7 As shown.

[0021] To provide support in its original location, this embodiment provides a stair platform.

[0022] Specifically, the stair platform includes a steel beam 7, a stair beam anchor plate 10, a platform support plate 9, a descending platform rib plate 8, an ascending platform rib plate 20, an end plate 12, an ascending section support plate 14, an ascending section rib plate 13, and a stiffening rib 15.

[0023] Steel beam 7 is set on platform beam 5, ladder beam anchor plate 10 is set on ladder beam 2, platform support plate 9 is connected to steel beam 7 and ladder beam anchor plate 10 respectively, the top of platform support plate 9 is attached to the bottom of platform plate 4, and the descending platform rib plate 8 is connected to steel beam 7, platform support plate 9, ladder beam anchor plate 10 respectively. For example, see Figure 3-4 The steel beam 7 is located below the platform plate 4, and both ends of the steel beam 7 are fixed to the platform beams 5 on both sides respectively.

[0024] For example, the ladder beam anchor plate 10 is located between the steel beam 7 and the remaining ladder beam 2 after it has been cut off, and the ladder beam anchor plate 10 is fixed to the side wall of the ladder beam 2.

[0025] For example, the platform support plate 9 is attached to the bottom end of the platform plate 4, and the platform support plate 9 is clamped between the steel beam 7 and the platform plate 4. The platform support plate 9 is welded to the steel beam 7, and the right end of the platform support plate 9 is welded to the ladder beam anchor plate 10.

[0026] For example, four descending platform ribs 8 are provided between the steel beam 7 and the ladder beam anchor plate 10. The descending platform ribs 8 are perpendicular to the platform support plate 9, and the four descending platform ribs 8 are arranged in parallel at intervals. The two ends of the descending platform ribs 8 are welded to the steel beam 7 and the ladder beam anchor plate 10, respectively, and the top of the descending platform ribs 8 are welded to the platform support plate 9. Among them, the steel beam 7, the descending platform ribs 8, the platform support plate 9, and the ladder beam anchor plate 10 are welded into one piece, which can improve the stability of the remaining ladder beam 2 and platform plate 4.

[0027] End plate 12 is connected to platform support plate 9, and upward platform rib plate 20 is connected to steel beam 7, platform support plate 9 and end plate 12 respectively; For example, see Figure 3 , Figure 5 The end plate 12 is located below the area to be cut 18, and the end plate 12 is welded to the platform support plate 9.

[0028] For example, three upward platform ribs 20 are provided between the end plate 12 and the steel beam 7. The upward platform ribs 20 are parallel to the downward platform ribs 8, and the three upward platform ribs 20 are arranged at intervals. The two ends of the upward platform ribs 20 are welded to the steel beam 7 and the end plate 12, respectively, and the top of the upward platform ribs 20 are welded to the platform support plate 9. Among them, the platform support plate 9, the upward platform ribs 20, and the end plate 12 are welded to the steel beam 7 to form a platform support component.

[0029] The upper section support plate 14 is connected to the end plate 12. The upper section rib plate 13 is connected to the upper section support plate 14 and the end plate 12 respectively. The stiffening rib 15 is connected to the upper section support plate 14 and the upper section rib plate 13 respectively. The platform support plate 9 is provided with a clearance groove that is adapted to the upper section support plate 14. The top of the upper section support plate 14 is flush with the top of the platform plate 4. The upper section support plate 14 is used to support the upper stair section 3. For example, see Figure 3 , Figure 5 , Figure 6 The ascending section support plate 14 is located in the area to be removed 18, and the projection of the ascending section support plate 14 on the plane of the platform plate 4 can cover the entire area to be removed 18. The ascending section support plate 14 includes an inclined plate section and a flat plate section. The top of the inclined plate section is welded to the flat plate section, the bottom of the inclined plate section is welded to the end plate 12, and the top of the flat plate section is flush with the top of the platform plate 4.

[0030] For example, the platform support plate 9 is provided with a clearance groove that is compatible with the upper section support plate 14, so as to ensure that the upper section support plate 14, the upper section rib plate 13, and the stiffening rib 15 will not interfere with the platform support plate 9.

[0031] For example, three upward section ribs 13 are provided below the upward section support plate 14. The upward section ribs 13 are parallel to the upward platform ribs 20, and the three upward section ribs 13 are arranged at intervals. The upward section ribs 13 are welded to the upward section support plate 14 and the end plate 12 respectively.

[0032] For example, two stiffening ribs 15 are provided below the upper section support plate 14. The stiffening ribs 15 are parallel to the end plate 12, and the two stiffening ribs 15 are located below the inclined plate section and the flat plate section, respectively. The two stiffening ribs 15 are welded to the inclined plate section and the flat plate section, respectively, and are also welded to the upper section rib plate 13. The upper section support plate 14, the upper section rib plate 13, and the stiffening ribs 15 are welded together to form an upper section support component, on which the upper ladder section 3 can be directly placed. The platform support component can improve the stability of the upper section support component.

[0033] Based on the above structure, the stair platform provided in this embodiment, after removing the stair beams 2 and platform slabs 4 that affect the clear height, provides new supports for the unsupported ascending stair section 3 and platform slab 4 by adding steel beams 7, end plates 12, and ascending section support plates 14 at appropriate locations. This avoids the need to dismantle the ascending stair section 3 without changing its span or support conditions, thus significantly reducing the demolition scope. Furthermore, since the new components are all manufactured in the factory, on-site installation time is short, and they can bear load immediately after installation, greatly shortening the downtime of the stairwell and reducing inconvenience and fire risks during the closure of the fire escape staircase.

[0034] Based on the above technical solution, in the technical solution provided in this embodiment, the stair platform also includes a steel beam anchor plate 11, with anchor bolts embedded in the platform beam 5, the steel beam anchor plate 11 being fixed to the platform beam 5 by the anchor bolts, and the steel beam 7 being welded to the steel beam anchor plate 11.

[0035] For example, see Figure 3-4 Four anchor bolts are embedded in the side wall of the platform beam 5. The steel beam anchor plate 11 is fixed to the side wall of the platform beam 5 by these four anchor bolts. The end of the steel beam 7 is welded to the steel beam anchor plate 11 on the same side, so that the steel beam 7 and the platform beam 5 can be fixedly connected.

[0036] In the technical solution provided in this embodiment, anchor bolts are embedded in the ladder beam 2, and the ladder beam anchor plate 10 is fixed to the ladder beam 2 by the anchor bolts.

[0037] For example, see Figure 3-4 Four anchor bolts are embedded in the side wall of the ladder beam 2. The ladder beam anchor plate 10 is fixed to the side wall of the ladder beam 2 through these four anchor bolts, thus realizing the fixed connection between the ladder beam anchor plate 10 and the ladder beam 2.

[0038] In the technical solution provided in this embodiment, the upper section rib plate 13 and the end plate 12 can be fixedly connected by a connecting plate 16.

[0039] For example, see Figure 14 Four connecting holes 19 are provided on the side wall of the upper section rib plate 13. See also Figure 5The connecting plate 16 corresponds one-to-one with the upper section rib 13, and the connecting plate 16 is welded to the end plate 12. Four screw holes are provided on the side wall of the connecting plate 16, which are aligned with the connecting holes 19. Connecting bolts 17 are threaded through the connecting holes 19 and into the screw holes to fix the connecting plate 16 to the upper section rib 13. This allows the connecting plate 16 to be pre-welded to the end plate 12; during on-site installation, only the upper section rib 13 and the connecting plate 16 need to be locked and fixed using the connecting bolts 17, making installation more convenient.

[0040] In the technical solution provided in this embodiment, the connection order of steel beam 7, platform support plate 9, descending platform rib plate 8, ladder beam anchor plate 10, end plate 12, ascending section support plate 14, ascending section rib plate 13, stiffening rib 15, and steel beam anchor plate 11 can be determined according to the actual requirements of the site, ensuring that all parts are reliably connected before the ladder beam 2 and platform plate 4 that affect the clearance are removed.

[0041] It should be noted that the upward section support component only exists when the staircase has an upward section. When there is no upward section 3, see [reference needed]. Figure 8-13 After completing the connection of platform support plate 9, descending platform rib plate 8, ladder beam anchor plate 10, and steel beam 7, the part of ladder beam 2 and platform plate 4 that affects the net height is cut off and the building surface layer is added to complete the renovation.

[0042] In summary, the construction process of the stair platform provided in this embodiment may include the following steps: Step 1: Connect the platform support plate 9, the upward platform rib plate 20, the end plate 12, and the steel beam 7 to form the platform support components; Step 2: Connect the upper section support plate 14, the upper section rib plate 13, and the stiffening rib 15 to form the upper section support component. Step 3: Insert the anchor bolts into ladder beam 2 and platform beam 5; Step 4: Install steel beam anchor plate 11 and ladder beam anchor plate 10; Step 5: Tightly press the platform support to the lower surface of the stair platform 4 and the stair beam anchor plate 10, connect the steel beam 7 to the steel beam anchor plate 11, and connect the platform support plate 9 and the descending platform rib plate 8 to the stair beam anchor plate 10 respectively. Step 6: Provide temporary support for the upward staircase section 3; Step 7: Remove the stair beam 2 and platform slab 4 that affect the net height; Step 8: Connect the upper section support to the platform support, place the upper stair section 3 on the upper section support, remove the temporary support and repaint the building surface to complete the renovation.

[0043] When there is no upward stair section 3, the sixth step is changed to cutting off the part of the stair beam 2 and platform slab 4 that affect the net height and then adding the building surface layer to complete the renovation.

[0044] In the description of this application, 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", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0047] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A stair platform, characterized in that, Including steel beams (7), ladder beam anchor plates (10), platform support plates (9), down platform ribs (8), up platform ribs (20), end plates (12), up section support plates (14), up section ribs (13), and stiffening ribs (15); The steel beam (7) is set on the platform beam (5), the ladder beam anchor plate (10) is set on the ladder beam (2), the platform support plate (9) is connected to the steel beam (7) and the ladder beam anchor plate (10) respectively, the top of the platform support plate (9) is attached to the bottom of the platform plate (4), and the descending platform rib plate (8) is connected to the steel beam (7), the platform support plate (9), and the ladder beam anchor plate (10) respectively; The end plate (12) is connected to the platform support plate (9), and the upward platform rib plate (20) is connected to the steel beam (7), the platform support plate (9), and the end plate (12) respectively; The upper section support plate (14) is connected to the end plate (12), the upper section rib plate (13) is connected to the upper section support plate (14) and the end plate (12) respectively, the stiffening rib (15) is connected to the upper section support plate (14) and the upper section rib plate (13) respectively, the platform support plate (9) is provided with a clearance groove adapted to the upper section support plate (14), the top of the upper section support plate (14) is flush with the top of the platform plate (4), and the upper section support plate (14) is used to support the upper stair section (3).

2. A stair platform according to claim 1, characterized in that, The platform support plate (9) is welded to the steel beam (7) and the ladder beam anchor plate (10) respectively.

3. A stair platform according to claim 1, characterized in that, The descending platform rib (8) is welded to the steel beam (7), the platform support plate (9), and the ladder beam anchor plate (10) respectively.

4. A stair platform according to claim 1, characterized in that, The end plate (12) is welded to the platform support plate (9).

5. A stair platform according to claim 1, characterized in that, The upper platform rib (20) is welded to the steel beam (7), the platform support plate (9), and the end plate (12) respectively.

6. A stair platform according to claim 1, characterized in that, The upper section support plate (14) is welded to the end plate (12).

7. A stair platform according to claim 1, characterized in that, The upper section rib (13) is welded to the upper section support plate (14) and the end plate (12) respectively.

8. A stair platform according to claim 1, characterized in that, The stiffening rib (15) is welded to the upper section support plate (14) and the upper section rib plate (13) respectively.

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