Prefabricated stair convenient to install

Abstract

The utility model belongs to the technical field of prefabricated stair production, and particularly relates to a prefabricated stair convenient to install, which comprises a stair plate and a step module, stair plate positioning holes with T-shaped sections are arranged at two ends of the stair plate, and the step module is detachably connected with the stair plate through a positioning component. The positioning assembly comprises a limiting block and a limiting groove, the limiting block is integrally connected to the center of the surface of the step plate, the limiting groove is formed in the center of the back face of the step module in a penetrating mode, and the cross section of the limiting block is of a trapezoidal structure. Through the arrangement of the positioning assemblies, the step modules and the inclined step plates of the whole prefabricated stair are connected in a split type disassembly and assembly mode, and therefore when the prefabricated stair is collided and damaged in the installation process, only a certain damaged part needs to be replaced independently, and the installation cost is reduced. And therefore, the cost generated in the mounting process and the convenience of mounting operation are effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated stair production, and in particular relates to a prefabricated staircase which is easy to install. Background Art

[0002] Prefabricated stairs are manufactured in a standardized manner in the factory and then transported to the construction site for hoisting and installation. Prefabricated stairs can be divided into slab-type stairs and beam-slab-type stairs according to their structural form. They can be divided into five types according to the cross-sectional form of the stair segments: without slab, with slab at the low end, with slab at the high end, with slab at both the high and low ends, and with slab in the middle.

[0003] For example, a prefabricated staircase that is easy to install is disclosed in publication number CN219569401U. The utility model includes a staircase body and a sling. A handrail is provided at the top edge of the staircase body. A round hole is provided on the staircase body. A mounting hole is provided on the staircase body. A first conical groove is provided at the top of the staircase body. A second conical groove is provided at the bottom of the staircase body. The sling includes a screw rod that passes through the round hole, a lifting ring provided at the top of the screw rod, and a nut that is threadedly connected to the screw rod. The screw rod provided in the utility model can pass through the round hole. After passing through, the nut can be rotated to be fixed to the screw rod. After being fixed, the hook of the lifting device can be connected through the lifting ring on the sling to lift the staircase body for installation. At the same time, the cooperation of the first conical groove and the first positioning rod can quickly correct the position of the top of the staircase body, and the cooperation of the second conical groove and the second positioning rod can quickly correct the position of the bottom of the staircase body for installation.

[0004] At present, in the prior art, the step part and the inclined stair tread of the prefabricated staircase are integrally cast with concrete. Since the entire prefabricated staircase is relatively large and is installed by hoisting, it is very easy to be bumped during installation, resulting in damage to the staircase and affecting the appearance. At the same time, since the prefabricated staircase is integrally formed, it needs to be replaced as a whole when it is bumped and damaged, which is very costly.

[0005] In view of this, the utility model provides a prefabricated staircase which is easy to install to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a prefabricated staircase which is easy to install, aiming to solve the problem that the prefabricated staircase in the prior art is integrally formed and needs to be replaced as a whole when it is damaged during installation, which results in high cost.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated staircase that is easy to install, including a stair tread and a step module, and stair tread positioning holes with a "T"-shaped cross-section are provided at both ends of the stair tread, and the step module is detachably connected to the stair tread through a positioning assembly.

[0008] As a preferred prefabricated staircase that is easy to install according to the utility model, the positioning assembly includes: a limit block and a limit groove, the limit block is integrally connected to the center of the surface of the stair plate, and the limit groove is penetrated and opened at the center of the back side of the step module.

[0009] As a preferred embodiment of the utility model for a prefabricated staircase that is easy to install, the cross section of the limit block is a trapezoidal structure, and the size of the limit block is matched with the size of the limit groove.

[0010] As a preferred embodiment of the utility model of a prefabricated staircase that is easy to install, the step module is connected to the stair tread in a sliding manner through a limiting block and a limiting groove.

[0011] As a preferred prefabricated staircase that is easy to install according to the utility model, the positioning assembly includes: a positioning column one, a positioning column two and a step positioning hole, the positioning column one is vertically connected to the top surface of the lower end of the stair tread and the top surface of each of the step modules, the positioning column two is vertically arranged at equal intervals along the inclined surface of the stair tread, and the step positioning holes are opened inside the four corners of each of the step modules.

[0012] As a preferred embodiment of the prefabricated staircase of the utility model which is easy to install, the diameters of the first positioning column and the second positioning column are the same, and their surfaces are both threaded structures.

[0013] As a preferred embodiment of the utility model of a prefabricated staircase that is easy to install, the upper aperture size of the step positioning hole is larger than the lower aperture size, and the lower aperture size is matched with the size of the positioning column.

[0014] As a preferred embodiment of the utility model as a prefabricated staircase that is easy to install, when the step modules are stacked in a step-like manner along the inclined surface of the stair tread, the positioning column 1 and the positioning column 2 are respectively inserted into the step positioning holes located at the front end and the rear end of the step module.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model uses the positioning assembly to connect the step module and the inclined stair tread of the entire prefabricated staircase in a split disassembly and assembly manner. When the prefabricated staircase is damaged during installation, only the damaged part needs to be replaced, thereby effectively reducing the cost incurred during the installation process.

[0017] 2. Secondly, by adopting a split-type disassembly and assembly connection method between the step module and the inclined stair tread, the overall weight of the prefabricated staircase during installation will be relatively reduced, which is convenient for adjustment during installation and thus facilitates the installation operation of the prefabricated staircase. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the ladder structure of the first embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the step module structure of the first embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the ladder structure of the second embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the step module structure of the second embodiment of the present utility model;

[0025] Figure 7 It is a schematic diagram of the overall cross-sectional structure of the second embodiment of the utility model.

[0026] In the figure: 1. ladder plate; 2. step module; 3. ladder plate positioning hole; 4. limit block; 5. limit groove; 6. positioning column 1; 7. positioning column 2; 8. step positioning hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] See also Figure 1-Figure 7 The utility model provides the following technical solutions: a prefabricated staircase that is easy to install, including a stair tread 1 and a step module 2, stair tread positioning holes 3 with a "T"-shaped cross-section are opened at both ends of the stair tread 1, and the step module 2 is detachably connected to the stair tread 1 through a positioning assembly.

[0029] Embodiment 1:

[0030] See also Figure 1-Figure 3, preferably: the positioning assembly includes: a limit block 4 and a limit groove 5, the limit block 4 is integrally connected to the surface center of the ladder plate 1, the limit groove 5 is through and opened at the back center of the step module 2, the cross-section of the limit block 4 is a trapezoidal structure, and the size of the limit block 4 is adapted to the size of the limit groove 5, and the step module 2 is connected to the ladder plate 1 through the limit block 4 and the limit groove 5 to form a sliding engagement connection.

[0031] It should be particularly noted here that reinforcing ribs having the same shape as the limiting block 4 need to be tied inside the limiting block 4 to enhance the strength of the limiting block 4 .

[0032] During specific use, first, the ladder board 1 is lifted to between the stair beams of the upper and lower floors, and the bolts reserved between the upper and lower stair beams are inserted into the ladder board positioning holes 3 for positioning, the gasket is sleeved on the reserved bolts through the ladder board positioning holes 3, and the nuts are tightened to fix them and then grouted to make them dense, and finally the step modules 2 are connected to the ladder board 1 in turn through the limit blocks 4 to complete the assembly of the entire prefabricated staircase. Since the entire prefabricated staircase is modularized, when any module of the prefabricated staircase is damaged, it can be replaced independently. At the same time, due to the modularization, the installation weight of the prefabricated stairs will be reduced. Therefore, it is convenient for the staff to adjust the position and direction of the ladder board 1 during installation.

[0033] Embodiment 2:

[0034] See also Figure 4 - Figure 7 , preferably: the positioning assembly includes: a positioning column 1 6, a positioning column 2 7 and a step positioning hole 8, the positioning column 1 6 is vertically connected to the top surface of the lower end of the ladder plate 1 and the top surface of each step module 2, the positioning column 2 7 is vertically arranged at equal intervals along the inclined surface of the ladder plate 1, and the step positioning holes 8 are opened inside the four corners of each step module 2, the positioning column 1 6 and the positioning column 2 7 have the same diameter size, and their surfaces are both threaded structures, the upper aperture size of the step positioning hole 8 is larger than the lower aperture size, and its lower aperture size is adapted to the size of the positioning column 1 6, when the step modules 2 are stacked in a stepped manner along the inclined surface of the ladder plate 1, the positioning column 1 6 and the positioning column 2 7 are just inserted into the step positioning holes 8 located at the front end and the rear end of the step module 2, respectively.

[0035] During specific use, the stair tread 1 is lifted to between the stair beams of the upper and lower floors, and the bolts reserved between the upper and lower stair beams are inserted into the stair tread positioning holes 3 for positioning, the gasket is sleeved on the reserved bolts through the stair tread positioning holes 3, and the nuts are tightened to fix them and then grouting is performed densely, and the positioning columns 1 6 and 7 on the stair tread 1 are respectively inserted into the step positioning holes 8 opened at the front and rear ends of the first step module 2, and the following step modules 2 are installed in sequence in the same way until they are flush with the upper end surface of the stair tread 1. After the assembly is completed, the bolts reserved for the stair beams are fixed to the stair tread 1, and then grouting is performed to complete the entire assembly operation.

[0036] It should be particularly noted here that no positioning column 6 is embedded in the step module 2 at the uppermost end.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A prefabricated staircase that is easy to install, comprising a stair tread (1) and a step module (2), wherein both ends of the stair tread (1) are provided with stair tread positioning holes (3) with a "T"-shaped cross section, characterized in that: The step module (2) is detachably connected to the ladder plate (1) via a positioning assembly; The positioning assembly comprises: a limiting block (4) and a limiting groove (5), wherein the limiting block (4) is integrally connected to the center of the surface of the ladder plate (1), and the limiting groove (5) is penetrated and opened at the center of the back side of the step module (2); or The positioning assembly comprises: a positioning column 1 (6), a positioning column 2 (7) and a step positioning hole (8); the positioning column 1 (6) is vertically connected to the top surface of the lower end of the ladder board (1) and the top surface of each step module (2); the positioning column 2 (7) is vertically arranged at equal intervals along the inclined surface of the ladder board (1); and the step positioning hole (8) is opened inside the four corners of each step module (2).

2. A prefabricated staircase that is easy to install according to claim 1, characterized in that: The cross section of the limiting block (4) is a trapezoidal structure, and the size of the limiting block (4) is matched with the size of the limiting groove (5).

3. A prefabricated staircase that is easy to install according to claim 2, characterized in that: The step module (2) is connected to the ladder board (1) in a sliding engagement manner via a limiting block (4) and a limiting groove (5).

4. The prefabricated staircase that is easy to install according to claim 1 is characterized in that: The diameters of the positioning column 1 (6) and the positioning column 2 (7) are the same, and their surfaces are both threaded structures.

5. The prefabricated staircase that is easy to install according to claim 1 is characterized in that: The upper aperture size of the step positioning hole (8) is larger than the lower aperture size, and the lower aperture size is matched with the size of the positioning column 1 (6).

6. The prefabricated staircase that is easy to install according to claim 1, characterized in that: When the step modules (2) are stacked in a step-like manner along the inclined surface of the ladder plate (1), the first positioning column (6) and the second positioning column (7) are respectively inserted into the step positioning holes (8) located at the front and rear ends of the step modules (2).

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