Prefabricated stair structure

Abstract

The utility model provides a prefabricated staircase structure, which belongs to the technical field of prefabricated staircases and comprises a staircase body, the upper end and the lower end of the staircase body are fixedly connected with lap joint plates respectively, the lower ends of the lap joint plates at the two ends are connected with connecting parts respectively, and the lap joint plates and the connecting parts are fixed through reinforcing ribs. Fixing plates are fixedly connected to the two side wall faces of the lap joint plates, the lap joint plates at the two ends are connected through the fixing plates to form a mounting groove, and a plurality of steps are mounted in the mounting groove. The problems that when an existing prefabricated stair is spliced, steel bars of a stair platform are difficult to align with holes in the stair, the splicing difficulty is large, meanwhile, the connecting position of the prefabricated stair and the stair platform is unstable, the structure of the connecting position is weak, connection is not matched enough, and the connecting effect is poor are solved. And therefore, the problem that the prefabricated stair shakes and jolts after being mounted is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated stairs, and in particular relates to a prefabricated staircase structure. Background Art

[0002] Stairs are the main means of transportation between floors. The basic function of stairs is to go up and down floors safely. In addition, high-rise and super-high-rise buildings are the main direction of modern architectural development. Under the premise of ensuring quality, improving construction efficiency is an important indicator of modern construction technology. Existing stairs are mainly divided into wooden stairs, steel stairs and cast-in-place concrete stairs. Wooden stairs are not fireproof, so their application scope is limited. Steel stairs have a fast construction speed but poor sound insulation effect. Cast-in-place concrete stairs have good overall rigidity and good sound insulation effect. They are suitable for buildings with special requirements and high earthquake resistance requirements. However, they have weaknesses that cannot be ignored, such as cumbersome formwork support and large amount of wet work. Therefore, prefabricated stairs have become the development direction of stairs in the construction industry.

[0003] The existing CN219710568U discloses a prefabricated staircase, comprising a connecting plate 1 and a connecting plate 2, characterized in that: the connecting plate 1 is arranged on the outside of the connecting plate 2, a prefabricated staircase body is arranged on the top between the connecting plate 1 and the connecting plate 2, and a telescopic structure is arranged at the corner position of the top of the prefabricated staircase body, and an extrusion structure is arranged on both sides of the prefabricated staircase body, and the extrusion structure includes a plug-in block, and the top of the connecting plate 1 and the connecting plate 2 close to one side of the prefabricated staircase body are provided with a placement groove, the plug-in block is fixed to one side of the connecting plate 2 and the connecting plate 1, the plug-in block is located on the upper surface of the placement groove, and plug-in grooves 3 are arranged on both sides of the prefabricated staircase body, and latches are fixed on both sides of the bottom of the prefabricated staircase body, and reserved holes are vertically opened on the tops of the connecting plate 1 and the connecting plate 2, and splicing structures are arranged on both ends of the outside of the prefabricated staircase body, and an anti-slip groove is arranged on the upper surface of the prefabricated staircase body;

[0004] When splicing the prefabricated stairs, it is difficult to align the steel bars of the stair platform with the holes on the stairs, making splicing difficult. At the same time, the connection between the prefabricated stairs and the stair platform is unstable, the structure of the connection is relatively weak, and the connection is not consistent enough, which will cause the prefabricated stairs to shake and bump after installation. Summary of the invention

[0005] The utility model provides a prefabricated staircase structure, which aims to solve the problem that when splicing existing prefabricated stairs, the steel bars of the stair platform are difficult to align with the holes on the stairs, the splicing is relatively difficult, and at the same time the connection between the prefabricated stairs and the stair platform is unstable, the connection structure is relatively weak, and the connection is not consistent enough, which will cause the prefabricated stairs to shake and bump after installation.

[0006] An embodiment of the utility model provides a prefabricated staircase structure, including a staircase body, wherein the upper end and the lower end of the staircase body are respectively fixedly connected with lap plates, the lower ends of the lap plates at both ends are respectively connected with connecting parts, the lap plates and the connecting parts are fixed by reinforcing ribs, and the two side walls of the lap plates are fixedly connected with fixing plates, the fixing plates connect the lap plates at both ends and form an installation groove, and a plurality of steps are installed in the installation groove.

[0007] Furthermore, a placing platform is provided on the upper surface of the connecting part, the width of the placing platform is adapted to the lap plates at both ends, a protrusion is fixedly connected to one side of the lap plate facing the connecting part, a groove is provided on one side of the connecting part facing the lap plate, and the protrusion is snap-connected with the groove.

[0008] By adopting the above technical solution, the two ends of the lap plate are placed on the placement table, so that the protrusions are engaged with the grooves, and then the staircase body is fixed on the placement table through the lap plate.

[0009] Furthermore, through hole 2 is penetrated on both sides of the protrusion, and through hole 1 is provided on both side walls of the connecting parts at both ends, and through hole 1 penetrates the side wall surface of the groove, through hole 2 corresponds to through hole 1, and the reinforcing rib passes through through hole 1 and through hole 2.

[0010] By adopting the above technical solution, after the lap plate is engaged and connected with the connecting portion, the reinforcing rib is passed through the through hole 1 and the through hole 2, so as to further fix the lap plate and the connecting portion.

[0011] Furthermore, a rubber pad is provided between the lap plate and the placement table.

[0012] By adopting the above technical solution, the rigid contact between the lap plate and the placement table is converted into a flexible contact through the rubber pad, so that the lap plate and the placement table are not easily damaged, the service life is greatly improved, and the safety hazard is reduced.

[0013] Furthermore, a plurality of steel bars are arranged inside the step, the steel bars are in a triangular shape, and the steel bars are integrally formed with the step.

[0014] By adopting the above technical solution, the triangle has stability, and the bearing capacity of the steps can be greatly enhanced by the triangular steel reinforcement frame.

[0015] Furthermore, a plurality of threaded holes are provided on the side wall surfaces of the two fixing plates, and a retaining groove is provided on the upper surface of the fixing plates.

[0016] By adopting the above technical solution, after the stair body is installed, the enclosure handrail can be directly placed in the enclosure groove, and the bolts can be threaded into the threaded holes to fix the enclosure handrail without the need to drill holes again, which is convenient for installation.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model places the two ends of the lap plate on the placement table by setting the protrusions and the grooves, so that the protrusions and the grooves are engaged, and then the stair body is fixed on the placement table through the lap plate, which reduces the difficulty of splicing and improves the stability of the connection.

[0019] 2. The utility model provides a fixing plate. After the staircase body is installed, the enclosure handrail can be directly placed in the enclosure groove, and the bolts can be threaded into the threaded holes to fix the enclosure handrail. There is no need to drill holes again, and the installation is convenient.

[0020] 3. The utility model provides a triangle with stability through the arrangement of a steel bar frame, and the bearing capacity of the steps can be greatly enhanced through the triangular steel bar frame.

[0021] 4. The utility model provides through hole one, through hole two and reinforcing ribs. When the lap plate is engaged and connected with the connecting portion, the reinforcing ribs are passed through through hole one and through hole two to further fix the lap plate and the connecting portion.

[0022] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall side plan view of the embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the top view of the staircase body of an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the top view of the connecting portion of an embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the overall side perspective structure of an embodiment of the utility model;

[0028] Figure 5 This is a schematic diagram of the enlarged structure of the through hole 2 and the reinforcing ribs of an embodiment of the utility model;

[0029] Figure numerals: 1. Stair body; 2. Lap plate; 21. Bump; 211. Through hole 2; 3. Connecting part; 31. Placement table; 32. Groove; 33. Through hole 1; 34. Rubber pad; 4. Fixing plate; 41. Threaded hole; 42. Enclosing groove; 5. Installation groove; 6. Step; 61. Steel bar frame; 7. Reinforcement ribs. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5 The utility model embodiment proposes a prefabricated staircase structure, including a staircase body 1, the upper end and the lower end of the staircase body 1 are respectively fixedly connected with a lap plate 2, the lower ends of the lap plates 2 at both ends are respectively connected with a connecting part 3, the upper surface of the connecting part 3 is provided with a placing platform 31, and a rubber pad 34 is provided between the lap plate 2 and the placing platform 31. The rigid contact between the lap plate 2 and the placing platform 31 is converted into a flexible contact through the rubber pad 34, so that the lap plate 2 and the placing platform 31 are not easily damaged, which greatly improves the service life and reduces safety hazards. The width of the placing platform 31 is adapted to the lap plates 2 at both ends, and a protrusion 21 is fixedly connected to the side of the lap plate 2 facing the connecting part 3, and a groove 32 is provided on the side of the connecting part 3 facing the lap plate 2. The protrusion 21 is snap-fitted and connected with the groove 32. The two ends of the plate 2 are placed on the placement platform 31 so that the protrusion 21 is engaged with the groove 32, and then the stair body 1 is fixed on the placement platform 31 through the lap plate 2. The two sides of the protrusion 21 are penetrated by the through hole 211, and the two side walls of the connecting parts 3 at both ends are provided with a through hole 1 33. The through hole 1 33 penetrates the side wall of the groove 32. The through hole 211 and the through hole 1 33 correspond to each other. The reinforcing rib 7 passes through the through hole 1 33 and the through hole 211. When the lap plate 2 is engaged and connected with the connecting part 3, the reinforcing rib 7 is passed through the through hole 1 33 and the through hole 211, and concrete is poured into the through hole 1 33 and the through hole 211, so that the gaps between the through hole 1 33, the through hole 211 and the reinforcing rib 7 are filled, thereby achieving the purpose of further fixing the lap plate 2 and the connecting part 3.

[0032] Reference Figure 1-5 The lap plate 2 and the connecting part 3 are fixed by reinforcing ribs 7. The two side walls of the lap plate 2 are fixedly connected with fixing plates 4. A plurality of threaded holes 41 are provided on the side walls of the two fixing plates 4. A retaining groove 42 is provided on the upper surface of the fixing plate 4. After the stair body 1 is installed, the retaining handrail can be directly placed in the retaining groove 42, and the bolts can be threaded into the threaded holes 41 to fix the retaining handrail. There is no need to drill holes again, and the installation is convenient. The fixing plate 4 connects the lap plates 2 at both ends to form an installation groove 5. A plurality of steps 6 are installed in the installation groove 5. A plurality of steel bars 61 are arranged inside the step 6. The steel bars 61 are triangular in shape. The steel bars 61 and the step 6 are integrally formed. The triangle has stability. The triangular steel bars 61 can greatly enhance the bearing capacity of the step 6.

[0033] The specific implementation method is as follows: when in use, the prefabricated staircase body 1 is hoisted to the place where the stairs need to be installed, and the lap plates 2 at both ends of the staircase body 1 are placed on the corresponding placement platforms 31 of the connecting parts 3, so that the protrusions 21 on the lap plates 2 and the grooves 32 of the connecting parts 3 are engaged with each other, and at the same time, the rubber pads 34 on the placement platforms 31 can convert the rigid contact between the lap plates 2 and the placement platforms 31 into flexible contact, so that the lap plates 2 and the placement platforms 31 will not be damaged due to excessive weight after contact, and the lap plates 2 and the placement platforms 31 are aligned and placed. After completion, the reinforcing rib 7 is passed through the through hole 1 33 and the through hole 2 211, and concrete is poured into the through hole 1 211 and the through hole 2 33. The gaps between the through hole 1 33, the through hole 211 and the reinforcing rib 7 are filled with concrete to further enhance the fixing effect. At the same time, the triangular steel frame 61 in the step 6 can greatly improve the load-bearing capacity of the stair body 1. When the splicing is completed, the enclosure handle can be installed in the enclosure groove 42, and the bolts can be screwed into the threaded hole 41 for fixing. There is no need to drill holes again, and the installation is convenient.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A prefabricated staircase structure, characterized in that: The invention comprises a staircase body (1), wherein the upper end and the lower end of the staircase body (1) are respectively fixedly connected with a lap plate (2), the lower ends of the lap plates (2) at both ends are respectively connected with a connecting portion (3), the lap plates (2) and the connecting portion (3) are fixed by reinforcing ribs (7), the two side walls of the lap plates (2) are fixedly connected with a fixing plate (4), the fixing plate (4) connects the lap plates (2) at both ends to form an installation groove (5), and a plurality of steps (6) are installed in the installation groove (5).

2. A prefabricated staircase structure according to claim 1, characterized in that: A placement platform (31) is provided on the upper surface of the connecting portion (3), the width of the placement platform (31) is adapted to the lap plates (2) at both ends, a protrusion (21) is fixedly connected to one side of the lap plate (2) facing the connecting portion (3), a groove (32) is provided on one side of the connecting portion (3) facing the lap plate (2), and the protrusion (21) is snap-fitted and connected to the groove (32).

3. A prefabricated staircase structure according to claim 2, characterized in that: Through holes (211) are provided on both sides of the protrusion (21), and through holes (33) are provided on both side walls of the connection parts (3) at both ends. The through holes (33) pass through the side walls of the groove (32), the through holes (211) and the through holes (33) correspond to each other, and the reinforcing ribs (7) pass through the through holes (33) and the through holes (211).

4. The prefabricated staircase structure according to claim 2, characterized in that: A rubber pad (34) is provided between the lap plate (2) and the placement platform (31).

5. The prefabricated staircase structure according to claim 1, characterized in that: A plurality of steel bars (61) are arranged inside the step (6), the steel bars (61) are triangular in shape, and the steel bars (61) and the step (6) are integrally formed.

6. The prefabricated staircase structure according to claim 1, characterized in that: A plurality of threaded holes (41) are provided on the side wall surfaces of the two fixing plates (4), and a retaining groove (42) is provided on the upper surface of the fixing plate (4).

Images