Fabricated stair

Abstract

The utility model relates to an assembly type stair. Comprising a ladder beam provided with a plurality of first connecting holes; the ladder plates comprise a bottom ladder plate, a plurality of middle ladder plates and a top ladder plate; the bottom ladder plates are located at the bottoms of the ladder beams, the top ladder plates are located at the tops of the ladder beams, and the middle ladder plates are located between the bottoms of the ladder beams and the tops of the ladder beams; two grouting grooves are respectively formed from the back surface of the vertical part of the bottom ladder plate to the bottom of the plane part of the bottom ladder plate, and two grouting grooves are respectively formed from the back surface of the vertical part of the middle ladder plate to the bottom of the plane part of the middle ladder plate; and the first connecting pieces are embedded in the grouting grooves and the bottom of the top ladder plate correspondingly, the first connecting pieces at the bottoms of the middle ladder plates are used for being inserted into the first connecting holes corresponding to the first connecting pieces, and the first connecting pieces at the bottoms of the bottom ladder plates are used for being inserted into the first connecting holes corresponding to the first connecting pieces. The stair is low in self weight, the first connecting pieces at the connecting positions can be hidden, and the appearance is attractive.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of building construction technology, and in particular to an assembled staircase. Background Art

[0002] Stairs are an important vertical transportation hub of buildings and one of the most difficult components to construct during on-site construction. In current construction sites, cast-in-place stair formwork is used in large quantities and is complicated, resulting in large amounts of formwork waste. Stair dimensions are difficult to control on-site, and a large number of on-site workers are required. In addition, due to the use of a large number of scaffolding and formwork support tools, it is difficult to ensure the structural strength of the stairs.

[0003] As the construction industry slows down, the demand for high-quality buildings is gradually increasing, the application of traditional scissor ladders is gradually decreasing, and the application of double-tread stairs is becoming more and more widespread. However, double-tread stairs still have the following problems:

[0004] The structure is relatively complex and the overall weight is relatively heavy. There are many ladder beams, which is relatively complicated to manufacture, resulting in a long production cycle. During use, the joints are easily visible, which affects the appearance. There are many ladder board assemblies, which are relatively complex to manufacture and assemble. During use, the screw fixing ends are easily visible, which also affects the appearance. The durability of the structure for long-term use needs to be verified.

[0005] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] The purpose of the embodiments of the present application is to provide an assembled staircase, thereby overcoming one or more problems caused by the limitations and defects of the relevant technology at least to a certain extent.

[0008] According to a first aspect of an embodiment of the present application, there is provided an assembled staircase, comprising:

[0009] The ladder beam is provided with a plurality of first connection holes;

[0010] A ladder plate, located on the ladder beam, including a bottom ladder plate, a plurality of intermediate ladder plates and a top ladder plate; the bottom ladder plate is located at the bottom of the ladder beam, the top ladder plate is located at the top of the ladder beam, and the intermediate ladder plates are located between the bottom of the ladder beam and the top of the ladder beam; wherein the bottom ladder plate and the intermediate ladder plates are both L-shaped, and two grouting grooves are respectively opened from the back of the vertical portion of the bottom ladder plate to the bottom of the plane portion of the bottom ladder plate, and two grouting grooves are respectively opened from the back of the vertical portion of the intermediate ladder plate to the bottom of the plane portion of the intermediate ladder plate;

[0011] The first connecting piece is respectively embedded in each of the grouting grooves and on the bottom of the top ladder plate. The first connecting piece at the bottom of the middle ladder plate is used to be inserted into the first connecting hole corresponding thereto, the first connecting piece at the bottom of the bottom ladder plate is used to be inserted into the first connecting hole corresponding thereto, and the first connecting piece at the bottom of the top ladder plate is inserted into the first connecting hole corresponding thereto; wherein, when the first connecting piece at the bottom of the bottom ladder plate is used to be inserted into the first connecting hole corresponding thereto, the grouting grooves on the back and bottom of the bottom ladder plate are used to pour grout; when the first connecting piece at the bottom of the middle ladder plate is used to be inserted into the first connecting hole corresponding thereto, the grouting grooves on the back and bottom of the bottom ladder plate are used to pour grout;

[0012] The second connection holes are respectively arranged on the top ladder plate and the bottom ladder plate, the second connection holes on the top ladder plate are connected to the corresponding first connection holes on the ladder beam through a second connection member, and the second connection holes on the bottom ladder plate are connected to the corresponding first connection holes on the ladder beam through a second connection member.

[0013] In one embodiment of the present application, the ladder beam is in the shape of a sawtooth with an inverted negative angle.

[0014] In one embodiment of the present application, the first connecting member is a round head fixed to a long metal rod, or the first connecting member is a cross head fixed to a long metal rod.

[0015] In one embodiment of the present application, the diameter of the cross head or the round head of the first connecting member is 20-50 mm, the length of the long metal rod is 70 mm-90 mm, the diameter of the long metal rod is 8-16 mm and has ribs on the surface.

[0016] In one embodiment of the present application, the head of the first connecting member at the bottom of the middle stair plate is embedded in the grouting groove by 10 to 40 mm, the head of the first connecting member at the bottom of the bottom stair plate is embedded in the grouting groove by 10 to 40 mm, the head of the first connecting member at the bottom of the top stair plate is embedded in the top stair plate, and the long metal rod is outside.

[0017] In one embodiment of the present application, the cross-sectional width of the ladder beam is 100 mm to 150 mm, and the height of the ladder beam is 120 mm to 240 mm.

[0018] In one embodiment of the present application, the diameter of the first connecting hole is 20-50 mm, and the depth of the first connecting hole is 50-90 mm.

[0019] In one embodiment of the present application, anti-slip strips are respectively provided on the middle stair plate and the top stair plate.

[0020] In one embodiment of the present application, the top ladder plate is in an I-shape.

[0021] In the embodiment of the present application, through the above-mentioned stairs, on the one hand, the weight of the design is reduced by using the stair treads and stair beams, and the first connecting piece in the grouting groove of the bottom stair tread is inserted into the corresponding first connecting hole on the stair beam for assembly, the first connecting piece in the grouting groove of the middle stair tread is inserted into the corresponding first connecting hole on the stair beam for assembly, and the first connecting piece of the top stair tread is assembled with the corresponding first connecting hole on the stair beam. The assembly method of inserting the first connecting piece into the first connecting hole achieves the purpose of hiding the first connecting piece, so that it cannot be seen from the front and has a good appearance. On the other hand, the connection point where the first connecting piece of the bottom stair tread is inserted into the first connecting hole and the connection point where the first connecting piece of the middle stair tread is inserted into the first connecting hole are grouted through the grouting groove, which ensures that the connection point is not loose and increases the assembly strength. In addition, the assembly method of the stair treads and stair beams is simple and easy to operate, thereby shortening the assembly construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic structural diagram of an assembled staircase in an exemplary embodiment of the present application is shown;

[0024] Figure 2 A schematic diagram showing the structure of the bottom ladder plate in an exemplary embodiment of the present application is shown;

[0025] Figure 3 A schematic structural diagram of a middle staircase of an exemplary embodiment of the present application is shown;

[0026] Figure 4 A schematic diagram showing the structure of the top ladder plate in an exemplary embodiment of the present application is shown;

[0027] Figure 5 A schematic structural diagram showing an exemplary embodiment of the present application in which a middle ladder plate is cut away from a vertical portion;

[0028] Figure 6 A schematic diagram showing a ladder plate and a ladder beam to be connected in an exemplary embodiment of the present application;

[0029] Figure 7 A schematic diagram showing the connection between the ladder plate and the ladder beam in an exemplary embodiment of the present application is shown;

[0030] Figure 8 A top view of an intermediate riser according to an exemplary embodiment of the present application is shown;

[0031] Fig. 9 A schematic diagram showing the pouring of grout after the middle stair slab and the stair beam are connected in the exemplary embodiment of the present application;

[0032] Fig.10 A schematic diagram showing the structure of a ladder beam in an exemplary embodiment of the present application is shown;

[0033] Fig.11 A schematic diagram showing a structure in which the first connecting member in an exemplary embodiment of the present application is a cross-shaped head;

[0034] Fig.12 A schematic structural diagram showing an exemplary embodiment of the present application in which the first connecting member is a round head.

[0035] In the figure: 100, ladder beam; 110, first connecting hole; 200, ladder board; 210, bottom ladder board; 220, middle ladder board; 230, top ladder board; 300, first connecting piece; 400, grouting groove; 500, second connecting hole; 600, anti-slip strip; 700, grouting material; 800, grouting port. DETAILED DESCRIPTION

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0037] In addition, the accompanying drawings are only schematic illustrations of the embodiments of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0038] In this example implementation, a prefabricated staircase is first provided. Figure 1As shown in the figure, the assembled staircase includes: a ladder beam 100 and a ladder plate 200. The ladder beam 100 is provided with a plurality of first connection holes 110; the ladder plate 200 is located on the ladder beam 100, and includes a bottom ladder plate 210, a plurality of intermediate ladder plates 220 and a top ladder plate 230; the bottom ladder plate 210 is located at the bottom of the ladder beam 100, the top ladder plate 230 is located at the top of the ladder beam 100, and the intermediate ladder plates 220 are located between the bottom of the ladder beam 100 and the top of the ladder beam 100; the bottom ladder plate 210 and the intermediate ladder plates 220 are both L-shaped, from the bottom ladder plate 210 to the top of the ladder beam 100; Two grouting grooves 400 are respectively provided from the back of the vertical part of the middle ladder plate 220 to the bottom of the plane part of the bottom ladder plate 210, and two grouting grooves 400 are respectively provided from the back of the vertical part of the middle ladder plate 220 to the bottom of the plane part of the middle ladder plate 220; the first connecting member 300 is respectively pre-buried in each grouting groove 400 and on the bottom of the top ladder plate 230, the first connecting member 300 at the bottom of the middle ladder plate 220 is used to be inserted into the first connecting hole 110 corresponding thereto, and the bottom of the bottom ladder plate 210 is pre-buried in each grouting groove 400 and on the bottom of the top ladder plate 230. The first connecting piece 300 at the top is used to be inserted into the first connecting hole 110 corresponding to it, and the first connecting piece 300 at the bottom of the top ladder plate 230 is inserted into the first connecting hole 110 corresponding to it; wherein, when the first connecting piece 300 at the bottom of the bottom ladder plate 210 is used to be inserted into the first connecting hole 110 corresponding to it, the grouting groove 400 on the back and bottom of the bottom ladder plate 210 is used to pour grout; when the first connecting piece 300 at the bottom of the middle ladder plate 220 is used to be inserted into the first connecting hole 110 corresponding to it, the grouting groove 400 on the back and bottom of the bottom ladder plate 210 is used to pour grout; the second connecting holes 500 are respectively arranged on the top ladder plate 230 and the bottom ladder plate 210, and the second connecting holes 500 on the top ladder plate 230 are connected to the corresponding first connecting holes 110 on the ladder beam 100 through the second connecting piece, and the second connecting holes 500 on the bottom ladder plate 210 are connected to the corresponding first connecting holes 110 on the ladder beam 100 through the second connecting piece.

[0039] It is important to understand that reference Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, when the bottom ladder plate 210 is installed at the bottom position of the ladder beam 100, the edge of the bottom ladder plate 210 is aligned with the edge of the bottom position of the ladder beam 100. The top of the grouting groove 400 on the back of the bottom ladder plate 210 and the corresponding position of the ladder beam 100 form a grouting port 800, and the grouting port 800 at the bottom ladder plate 210 is connected to the grouting groove 400 on the back of the bottom ladder plate 210 and the grouting groove 400 at the bottom of the bottom ladder plate 210. Figure 8As shown, a grouting port 800 is formed at the top of the grouting groove 400 on the back of the middle stair plate 220 and at the corresponding position of the ladder beam 100, and the grouting port 800 at the middle stair plate 220 is connected to the grouting groove 400 on the back of the middle stair plate 220 and the grouting groove 400 at the bottom of the middle stair plate 220.

[0040] like Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the first connecting member 300 in the grouting groove 400 on the bottom of the bottom ladder plate 210 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, and the second connecting rod is inserted into the first connecting hole 110 on the bottom ladder plate 210 and the second connecting hole 500 at the corresponding position of the ladder beam 100, and the grouting port 800 at the bottom ladder plate 210 is poured with grout, and then the grout flows into the grouting groove 400 on the back of the bottom ladder plate 210 and the grouting groove 400 at the bottom of the bottom ladder plate 210. In the present application, the first connecting member 300 in the grouting groove 400 on the bottom of the bottom ladder plate 210 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, so as to achieve the purpose of hiding the first connecting member 300 in the grouting groove 400 on the bottom of the bottom ladder plate 210. At the same time, the first connecting piece 300 of the bottom ladder plate 210 is inserted into the connection of the first connecting hole 110 and grouting is performed through the grouting groove 400, which ensures that the connection point is not loose and increases the assembly strength. The second connecting rod is inserted into the first connecting hole 110 on the bottom ladder plate 210 and the second connecting hole 500 at the corresponding position of the ladder beam 100, so that when the bottom ladder plate 210 and the ladder beam 100 are installed, a better fastening effect is achieved.

[0041] like Figure 3 , Figure 5 , Figure 8 and Fig. 9 As shown, after the installation of the bottom ladder board 210 is completed, the first connector 300 in the grouting groove 400 on the bottom of the middle ladder board 220 is inserted into the corresponding first connection hole 110 on the ladder beam 100, and grouting is poured into the grouting port 800 at the middle ladder board 220, and then the grouting flows into the grouting groove 400 on the back of the middle ladder board 220 and the grouting groove 400 at the bottom of the middle ladder board 220. In the present application, the first connector 300 in the grouting groove 400 on the bottom of the middle ladder board 220 is inserted into the corresponding first connection hole 110 on the ladder beam 100 for assembly, so as to achieve the purpose of hiding the first connector 300 in the grouting groove 400 on the bottom of the middle ladder board 220. At the same time, the first connector 300 of the middle ladder board 220 is inserted into the connection of the first connection hole 110 and grouting is poured through the grouting groove 400, so as to ensure that the connection point is not loose and increase the assembly strength.

[0042] It should be noted that after placing the bottom stair tread 210 and the middle stair tread 220 at the corresponding positions of the ladder beam 100, grouting is performed in the grouting port 800. The grouting material 700 can ensure the rigid connection between the stair tread 200 and the ladder beam 100, improve the overall rigidity of the stairs, and at the same time increase the effective height of the cross section of the ladder beam 100.

[0043] After the installation of the middle stair plate 220 is completed, the remaining middle stair plates 220 are installed in sequence.

[0044] like Figure 4 , Figure 6 and Figure 7 As shown, after all the intermediate ladder panels 220 are installed, the first connecting member 300 at the bottom of the top ladder panel 230 is inserted into the corresponding first connecting hole 110 on the ladder beam 100. By inserting the first connecting member 300 at the bottom of the top ladder panel 230 into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, the purpose of hiding the first connecting member 300 at the bottom of the top ladder panel 230 is achieved. At the same time, the second connecting member is inserted into the second connecting hole 500 on the top ladder panel 230 and the corresponding first connecting hole 110 on the ladder beam 100. By inserting the second connecting member at the bottom of the top ladder panel 230 into the second connecting hole 500 on the top ladder panel 230 and the corresponding first connecting hole 110 on the ladder beam 100, a better fastening effect is achieved when the top ladder panel 230 and the ladder beam 100 are installed.

[0045] It should be noted that when the staircase 200 is installed, the middle staircase 220 placed later just restricts the bottom staircase 210 or the front middle staircase 220 .

[0046] In the embodiment of the present application, through the above-mentioned stairs, on the one hand, the stair 200 and the ladder beam 100 are used to reduce the weight design, and the first connecting piece 300 in the grouting groove 400 of the bottom stair 210 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, and the first connecting piece 300 in the grouting groove 400 of the middle stair 220 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, and the first connecting piece 300 of the top stair 230 is assembled with the corresponding first connecting hole 110 on the ladder beam 100. The assembly method of inserting the first connecting piece 300 into the first connecting hole 110 achieves the purpose of hiding the first connecting piece 300, so that it cannot be seen from the front and has a good appearance. On the other hand, the connection point where the first connecting piece 300 of the bottom stair 210 is inserted into the first connecting hole 110 and the connection point where the first connecting piece 300 of the middle stair 220 is inserted into the first connecting hole 110 is grouted through the grouting groove 400, which ensures that the connection point is not loose and increases the assembly strength. In addition, the assembly method of the ladder plate 200 and the ladder beam 100 is simple and convenient to operate, thereby shortening the assembly construction period.

[0047] Next, we will refer to Figures 1 to 12 The various parts of the above-mentioned assembled staircase in this example embodiment are described in more detail.

[0048] The ladder beam 100 and the ladder plate 200. The ladder beam 100 is provided with a plurality of first connection holes 110; the ladder plate 200 is located on the ladder beam 100, and includes a bottom ladder plate 210, a plurality of intermediate ladder plates 220 and a top ladder plate 230; the bottom ladder plate 210 is located at the bottom of the ladder beam 100, the top ladder plate 230 is located at the top of the ladder beam 100, and the intermediate ladder plates 220 are located between the bottom of the ladder beam 100 and the top of the ladder beam 100; the bottom ladder plate 210 and the intermediate ladder plates 220 are both L-shaped, from the bottom ladder plate 210 to the top of the ladder beam 100; Two grouting grooves 400 are respectively provided from the back of the vertical part of the middle ladder plate 220 to the bottom of the plane part of the bottom ladder plate 210, and two grouting grooves 400 are respectively provided from the back of the vertical part of the middle ladder plate 220 to the bottom of the plane part of the middle ladder plate 220; the first connecting member 300 is respectively pre-buried in each grouting groove 400 and on the bottom of the top ladder plate 230, the first connecting member 300 at the bottom of the middle ladder plate 220 is used to be inserted into the first connecting hole 110 corresponding thereto, and the bottom of the bottom ladder plate 210 is pre-buried in each grouting groove 400 and on the bottom of the top ladder plate 230. The first connecting piece 300 at the top is used to be inserted into the first connecting hole 110 corresponding to it, and the first connecting piece 300 at the bottom of the top ladder plate 230 is inserted into the first connecting hole 110 corresponding to it; wherein, when the first connecting piece 300 at the bottom of the bottom ladder plate 210 is used to be inserted into the first connecting hole 110 corresponding to it, the grouting groove 400 on the back and bottom of the bottom ladder plate 210 is used to pour grout; when the first connecting piece 300 at the bottom of the middle ladder plate 220 is used to be inserted into the first connecting hole 110 corresponding to it, the grouting groove 400 on the back and bottom of the bottom ladder plate 210 is used to pour grout; the second connecting holes 500 are respectively arranged on the top ladder plate 230 and the bottom ladder plate 210, and the second connecting holes 500 on the top ladder plate 230 are connected to the corresponding first connecting holes 110 on the ladder beam 100 through the second connecting piece, and the second connecting holes 500 on the bottom ladder plate 210 are connected to the corresponding first connecting holes 110 on the ladder beam 100 through the second connecting piece.

[0049] It is important to understand that reference Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, when the bottom ladder plate 210 is installed at the bottom position of the ladder beam 100, the edge of the bottom ladder plate 210 is aligned with the edge of the bottom position of the ladder beam 100. The top of the grouting groove 400 on the back of the bottom ladder plate 210 and the corresponding position of the ladder beam 100 form a grouting port 800, and the grouting port 800 at the bottom ladder plate 210 is connected to the grouting groove 400 on the back of the bottom ladder plate 210 and the grouting groove 400 at the bottom of the bottom ladder plate 210. Figure 8 As shown, a grouting port 800 is formed at the top of the grouting groove 400 on the back of the middle stair plate 220 and at the corresponding position of the ladder beam 100, and the grouting port 800 at the middle stair plate 220 is connected to the grouting groove 400 on the back of the middle stair plate 220 and the grouting groove 400 at the bottom of the middle stair plate 220.

[0050] like Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the first connecting member 300 in the grouting groove 400 on the bottom of the bottom ladder plate 210 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, and the second connecting rod is inserted into the first connecting hole 110 on the bottom ladder plate 210 and the second connecting hole 500 at the corresponding position of the ladder beam 100, and the grouting port 800 at the bottom ladder plate 210 is poured with grout, and then the grout flows into the grouting groove 400 on the back of the bottom ladder plate 210 and the grouting groove 400 at the bottom of the bottom ladder plate 210. In the present application, the first connecting member 300 in the grouting groove 400 on the bottom of the bottom ladder plate 210 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, so as to achieve the purpose of hiding the first connecting member 300 in the grouting groove 400 on the bottom of the bottom ladder plate 210. At the same time, the first connecting piece 300 of the bottom ladder plate 210 is inserted into the connection of the first connecting hole 110 and grouting is performed through the grouting groove 400, which ensures that the connection point is not loose and increases the assembly strength. The second connecting rod is inserted into the first connecting hole 110 on the bottom ladder plate 210 and the second connecting hole 500 at the corresponding position of the ladder beam 100, so that when the bottom ladder plate 210 and the ladder beam 100 are installed, a better fastening effect is achieved.

[0051] like Figure 3 , Figure 5 , Figure 8 and Fig. 9As shown, after the installation of the bottom ladder board 210 is completed, the first connector 300 in the grouting groove 400 on the bottom of the middle ladder board 220 is inserted into the corresponding first connection hole 110 on the ladder beam 100, and grouting is poured into the grouting port 800 at the middle ladder board 220, and then the grouting flows into the grouting groove 400 on the back of the middle ladder board 220 and the grouting groove 400 at the bottom of the middle ladder board 220. In the present application, the first connector 300 in the grouting groove 400 on the bottom of the middle ladder board 220 is inserted into the corresponding first connection hole 110 on the ladder beam 100 for assembly, so as to achieve the purpose of hiding the first connector 300 in the grouting groove 400 on the bottom of the middle ladder board 220. At the same time, the first connector 300 of the middle ladder board 220 is inserted into the connection of the first connection hole 110 and grouting is poured through the grouting groove 400, so as to ensure that the connection point is not loose and increase the assembly strength.

[0052] It should be noted that after placing the bottom stair tread 210 and the middle stair tread 220 at the corresponding positions of the ladder beam 100, grouting is performed in the grouting port 800. The grouting material 700 can ensure the rigid connection between the stair tread 200 and the ladder beam 100, improve the overall rigidity of the stairs, and at the same time increase the effective height of the cross section of the ladder beam 100.

[0053] After the installation of the middle stair plate 220 is completed, the remaining middle stair plates 220 are installed in sequence.

[0054] like Figure 4 , Figure 6 and Figure 7 As shown, after all the intermediate ladder panels 220 are installed, the first connecting member 300 at the bottom of the top ladder panel 230 is inserted into the corresponding first connecting hole 110 on the ladder beam 100. By inserting the first connecting member 300 at the bottom of the top ladder panel 230 into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, the purpose of hiding the first connecting member 300 at the bottom of the top ladder panel 230 is achieved. At the same time, the second connecting member is inserted into the second connecting hole 500 on the top ladder panel 230 and the corresponding first connecting hole 110 on the ladder beam 100. By inserting the second connecting member at the bottom of the top ladder panel 230 into the second connecting hole 500 on the top ladder panel 230 and the corresponding first connecting hole 110 on the ladder beam 100, a better fastening effect is achieved when the top ladder panel 230 and the ladder beam 100 are installed.

[0055] It should be noted that when the staircase 200 is installed, the middle staircase 220 placed later just restricts the bottom staircase 210 or the front middle staircase 220 .

[0056] In the embodiment of the present application, through the above-mentioned stairs, on the one hand, the stair 200 and the ladder beam 100 are used to reduce the weight design, and the first connecting piece 300 in the grouting groove 400 of the bottom stair 210 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, and the first connecting piece 300 in the grouting groove 400 of the middle stair 220 is inserted into the corresponding first connecting hole 110 on the ladder beam 100 for assembly, and the first connecting piece 300 of the top stair 230 is assembled with the corresponding first connecting hole 110 on the ladder beam 100. The assembly method of inserting the first connecting piece 300 into the first connecting hole 110 achieves the purpose of hiding the first connecting piece 300, so that it cannot be seen from the front and has a good appearance. On the other hand, the connection point where the first connecting piece 300 of the bottom stair 210 is inserted into the first connecting hole 110 and the connection point where the first connecting piece 300 of the middle stair 220 is inserted into the first connecting hole 110 is grouted through the grouting groove 400, which ensures that the connection point is not loose and increases the assembly strength. In addition, the assembly method of the ladder plate 200 and the ladder beam 100 is simple and convenient to operate, thereby shortening the assembly construction period.

[0057] In one embodiment, the top riser 230 is I-shaped.

[0058] Compared with traditional assembled stairs, this application is light in weight, saves materials and time. The stair tread 200 and the ladder beam 100 are cast separately and assembled to form an integral staircase, which can ensure a low scrap rate of the staircase; this application disassembles the entire staircase, which has simple mold requirements, greatly improves mold utilization, and further reduces the cost of the staircase; when the stair tread 200 of this application is connected to the ladder beam 100, it is only necessary to place the bottom stair tread 210 and the middle stair tread 220 at their respective corresponding positions on the ladder beam 100, and then grouting is done in the grouting groove 400 of the bottom stair tread 210 and the grouting groove 400 of the middle stair tread 220. This form hides the first connecting piece 300 of the stair tread 200 and the ladder beam 100, and the staircase looks beautiful. At the same time, the grouting material ensures the firmness of the connection.

[0059] The assembled staircase of the present application is not prone to cracks during production, transportation and construction, has a high yield rate, and the house is beautiful when delivered later. The production of the staircase is highly industrialized and has a high template turnover rate. The staircase is assembled in the factory, and only the reserved first connecting piece needs to be connected to the ladder beam on site, which can shorten the construction period, reduce construction energy consumption, and reduce material consumption. At the same time, it can also be assembled on site according to needs in various forms.

[0060] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0062] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0065] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

Claims

1. An assembled staircase, characterized in that: include: The ladder beam is provided with a plurality of first connection holes; A staircase, located on the stair beam, including a bottom staircase, a plurality of intermediate staircases and a top staircase; The bottom stair tread is located at the bottom of the ladder beam, the top stair tread is located at the top of the ladder beam, and the middle stair tread is located between the bottom of the ladder beam and the top of the ladder beam; wherein the bottom stair tread and the middle stair tread are both L-shaped, two grouting grooves are respectively opened from the back of the vertical part of the bottom stair tread to the bottom of the plane part of the bottom stair tread, and two grouting grooves are respectively opened from the back of the vertical part of the middle stair tread to the bottom of the plane part of the middle stair tread; The first connecting piece is respectively embedded in each of the grouting grooves and on the bottom of the top ladder plate. The first connecting piece at the bottom of the middle ladder plate is used to be inserted into the first connecting hole corresponding thereto, the first connecting piece at the bottom of the bottom ladder plate is used to be inserted into the first connecting hole corresponding thereto, and the first connecting piece at the bottom of the top ladder plate is inserted into the first connecting hole corresponding thereto; wherein, when the first connecting piece at the bottom of the bottom ladder plate is used to be inserted into the first connecting hole corresponding thereto, the grouting grooves on the back and bottom of the bottom ladder plate are used to pour grout; when the first connecting piece at the bottom of the middle ladder plate is used to be inserted into the first connecting hole corresponding thereto, the grouting grooves on the back and bottom of the bottom ladder plate are used to pour grout; Second connecting holes are respectively arranged on the top stair plate and the bottom stair plate, the second connecting hole on the top stair plate and the corresponding first connecting hole on the stair beam are connected via a second connecting member, and the second connecting hole on the bottom stair plate and the corresponding first connecting hole on the stair beam are connected via a second connecting member.

2. The assembled staircase according to claim 1, characterized in that: The ladder beam is in the shape of an inverted negative angle sawtooth.

3. The assembled staircase according to claim 1, characterized in that: The first connecting member is a round head fixed to a long metal rod, or the first connecting member is a cross head fixed to a long metal rod.

4. The assembled staircase according to claim 3, characterized in that: The diameter of the cross-shaped head or the round head of the first connecting member is 20-50 mm, the length of the long metal rod is 70-90 mm, the diameter of the long metal rod is 8-16 mm and the surface is provided with ribs.

5. The assembled staircase according to claim 3, characterized in that: The head of the first connector at the bottom of the middle stair plate is embedded in the grouting groove by 10 to 40 mm, the head of the first connector at the bottom of the bottom stair plate is embedded in the grouting groove by 10 to 40 mm, the head of the first connector at the bottom of the top stair plate is embedded in the top stair plate, and the long metal rod is outside.

6. The assembled staircase according to claim 5, characterized in that: The metal long rod is 40 to 80 mm outside.

7. The assembled staircase according to claim 1, characterized in that: The cross-sectional width of the ladder beam is 100 mm to 150 mm, and the height of the ladder beam is 120 mm to 240 mm.

8. The assembled staircase according to claim 1, characterized in that: The diameter of the first connecting hole is 20-50 mm, and the depth of the first connecting hole is 50-90 mm.

9. The assembled staircase according to claim 1, characterized in that: Anti-slip strips are respectively arranged on the middle stair plate and the top stair plate.

10. The assembled staircase according to claim 1, characterized in that: The top ladder plate is in an I-shape.

Images