Die for prefabricating fair-faced concrete stairs

Abstract

The utility model discloses a mold for prefabricating bare concrete stairs. The mold comprises a side plate assembly and a step template assembly fixed on the side plate assembly. The stair formwork assembly is divided into the bottom layer formwork assembly and the upper layer formwork assembly in a double-layer design, and the upper layer formwork assembly used for forming a prefabricated stair stair step face is fixed through the first fixing piece penetrating through the bottom layer formwork assembly from bottom to top. The tail end of the first fixing piece is effectively prevented from being exposed out of the surface of the upper-layer formwork assembly, then pits generated due to the fact that the first fixing piece is exposed out of the surface of the formed prefabricated stair are avoided, and the attractiveness of the prefabricated stair is improved.

Description

Technical Field

[0001] This utility model belongs to the field of precast concrete technology, specifically relating to a mold for precast fair-faced concrete stairs. Background Technology

[0002] In the existing technology, precast concrete stairs commonly use two forms: steel molds and wooden molds. Steel molds have precise overall dimensions, are not easily deformed during production, and have smooth and flat inner sides, resulting in stairs with good overall appearance quality. However, the cost of the molds is relatively high, and if the number of precast stairs is small, using steel molds is not economical.

[0003] Wooden formwork is relatively inexpensive, and the formwork panels are typically connected by nails. However, the ends of the nails usually protrude from the surface of the wooden formwork. When pouring precast stairs,

[0004] Nails on the steps of the stair mold will leave marks on the surface of the precast staircase after molding, affecting the aesthetics of the final product. Additionally, grout leakage occurs at the joints of the mold. Therefore, there is an urgent need for a stair mold that can reduce the manufacturing cost of precast fair-faced concrete stairs while eliminating the problem of nail and bolt marks on the surface of the cast-in-place precast stairs caused by splicing wooden molds. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a mold for precast fair-faced concrete stairs, which solves the technical problem that existing stair molds cannot meet the requirements of low manufacturing cost while eliminating nail and bolt marks on the surface of the cast precast stairs caused by splicing wooden molds.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A precast fair-faced concrete staircase mold includes a side panel assembly and a step template assembly fixed to the side panel assembly. The step template assembly includes a first fixing member, and a bottom template assembly and an upper template assembly stacked on top of each other. The upper template assembly is fixed to the bottom template assembly via the first fixing member. The first fixing member passes through the bottom template assembly from bottom to top and connects to the upper template assembly.

[0008] Furthermore, the bottom-layer template assembly includes multiple bottom-layer stepped assemblies connected end-to-end in sequence. Both ends of each bottom-layer stepped assembly are fixed to the side panel assembly.

[0009] Furthermore, the bottom-layer stepped assembly includes a first bottom plate and a second bottom plate that are perpendicular to each other. A sheet metal connector is provided at the right-angle end formed by the first bottom plate and the second bottom plate. Multiple second fixing members are arranged sequentially on both the first and second bottom plates. Each second fixing member passes through the corresponding first bottom plate and second bottom plate from top to bottom and is fixed to the corresponding side plate assembly and sheet metal connector.

[0010] Furthermore, both the first and second bottom plates have clearance grooves in the middle of their adjacent sides. The two clearance grooves together form a limiting groove, which is used to limit the upper template assembly.

[0011] Furthermore, the upper template assembly includes multiple upper step assemblies connected end-to-end in sequence. Each upper step assembly includes a first top layer plate and a second top layer plate that are perpendicular to each other. A limiting member is provided at the right-angle end formed by the first top layer plate and the second top layer plate, which, in conjunction with a limiting groove, defines the position of the first top layer plate and the second top layer plate.

[0012] Furthermore, the side panel assembly includes a side template, horizontal square timbers, and multiple vertical square timbers. The top of the side template has step grooves that mate with each bottom-level step assembly. Each bottom-level step assembly is mounted on the step groove and secured by a second fastener. Both the horizontal and vertical square timbers are fixed to the outside of the side template.

[0013] Furthermore, both the first and second fasteners are made of gun nails.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The present invention features a double-layer design of the step template assembly, which is divided into a bottom template assembly and an upper template assembly. The upper template assembly used for forming the surface of the precast stair steps is fixed by a first fixing member that passes through the bottom template assembly from bottom to top. This effectively prevents the tail end of the first fixing member from being exposed on the surface of the upper template assembly, thereby avoiding pits on the surface of the formed precast staircase caused by the exposure of the first fixing member and improving the aesthetics of the precast staircase.

[0016] 2. The first bottom plate, the second bottom plate, the first top plate, and the second top plate in this utility model are all made of wooden molds, which solves the problem of high cost caused by using steel molds due to the high aesthetic requirements of the prefabricated staircase surface. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the relative positions of the bottom template component and the top template component in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the bottom template component in this utility model;

[0020] Figure 4 This is a schematic diagram of the upper-layer template component in this utility model;

[0021] Figure 5 This is an exploded view of the upper template component and the lower template component in this utility model;

[0022] Figure 6 This is a schematic diagram of the side panel assembly in this utility model.

[0023] Reference numerals: 1. Side panel assembly; 1-1. Side template; 1-2. Horizontal square timber; 1-3. Vertical square timber; 2. Bottom template assembly; 2-1. First bottom board; 2-2. Second bottom board; 2-3. Board connector; 2-4. Limiting groove; 3. Upper template assembly; 3-1. First top board; 3-2. Second top board; 3-3. Limiting component; 4. First fixing component; 5. Second fixing component. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 and 2 As shown, a mold for precast fair-faced concrete stairs is used to form the step surface during the pouring of precast stairs. The stair mold includes a side panel assembly 1 and a step template assembly fixed to the side panel assembly 1. The step template assembly includes a first fixing member 4, and a bottom template assembly 2 and an upper template assembly 3 stacked together. The upper template assembly 3 is fixed to the bottom template assembly 2 by the first fixing member 4. The first fixing member 4 passes through the bottom template assembly 2 from bottom to top and connects to the upper template assembly 3. This prevents pits from appearing on the surface of the precast stairs due to the exposed end of the first fixing member 4 when the upper template assembly 3 is used in conjunction with the retaining template during precast stair pouring, thus improving the aesthetics of the precast stairs.

[0027] like Figure 2 and 3 As shown, the bottom template assembly 2 includes multiple bottom step assemblies connected end-to-end in sequence. Both ends of each bottom step assembly are fixed to the side panel assembly 1. The bottom step assembly includes a first bottom plate 2-1 and a second bottom plate 2-2 that are perpendicular to each other. A plate connector 2-3 is provided at the right-angle end formed by the first bottom plate 2-1 and the second bottom plate 2-2 to fix the ends of the two plates and ensure a tight joint at the right-angle position.

[0028] In this embodiment, both the first bottom plate 2-1 and the second bottom plate 2-2 are provided with a plurality of second fixing members 5 arranged in sequence. Each second fixing member 5 passes through the corresponding first bottom plate 2-1 and the second bottom plate 2-2 from top to bottom and is fixed to the corresponding side plate assembly 1 and plate connector 2-3.

[0029] Furthermore, clearance grooves are provided in the middle of the adjacent sides of the first bottom plate 2-1 and the second bottom plate 2-2. The two clearance grooves together form a limiting groove 2-4, which is used to limit the upper template assembly 3.

[0030] like Figure 4 and 5 As shown, the upper template assembly 3 includes multiple upper step assemblies connected end to end in sequence. Each upper step assembly includes a first top plate 3-1 and a second top plate 3-2 that are perpendicular to each other. A limiting member 3-3 is provided at the right-angle end formed by the first top plate 3-1 and the second top plate 3-2. This limiting member, in cooperation with the limiting groove 2-4, provides initial limiting and fixing of the first top plate 3-1 and the second top plate 3-2, which are fixed to the first bottom plate 2-1 and the second bottom plate 2-2.

[0031] like Figure 6 As shown, the side panel assembly 1 includes a side template 1-1, horizontal square timbers 1-2, and multiple vertical square timbers 1-3. The top of the side template 1-1 has step grooves that mate with each bottom-level step assembly. Each bottom-level step assembly is mounted on the step grooves and secured by a second fastener 5. The horizontal square timbers 1-2 and the vertical square timbers 1-3 are both fixed to the outside of the side template 1-1 to enhance the structural stability between the side template 1-1 and the bottom and top-level step assemblies.

[0032] In addition, in this embodiment, both the first fixing member 4 and the second fixing member 5 are made of nail guns. The first bottom plate 2-1, the second bottom plate 2-2, the first top plate 3-1 and the second top plate 3-2 are all made of wooden molds.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mold for precast fair-faced concrete stairs, comprising a side plate assembly (1) and a step template assembly fixed to the side plate assembly (1), characterized in that: The stepped template assembly includes a first fixing member (4), and a bottom template assembly (2) and an upper template assembly (3) stacked together; the upper template assembly (3) is fixed to the bottom template assembly (2) by the first fixing member (4); the first fixing member (4) passes through the bottom template assembly (2) from bottom to top and is connected to the upper template assembly (3).

2. A mold for precast fair-faced concrete stairs according to claim 1, characterized in that: The bottom template component (2) includes multiple bottom step components connected end to end in sequence; the two ends of each bottom step component are fixed to the side panel component (1).

3. A mold for precast fair-faced concrete stairs according to claim 2, characterized in that: The bottom step assembly includes a first bottom plate (2-1) and a second bottom plate (2-2) that are perpendicular to each other; a plate connector (2-3) is provided at the right angle formed by the first bottom plate (2-1) and the second bottom plate (2-2); a plurality of second fasteners (5) are arranged in sequence on the first bottom plate (2-1) and the second bottom plate (2-2); each second fastener (5) passes through the corresponding first bottom plate (2-1) and the second bottom plate (2-2) from top to bottom and is fixed to the corresponding side plate assembly (1) and plate connector (2-3).

4. A mold for precast fair-faced concrete stairs according to claim 3, characterized in that: The first bottom plate (2-1) and the second bottom plate (2-2) are provided with relief grooves in the middle of adjacent sides; the two relief grooves together form a limiting groove (2-4) for limiting the upper template assembly (3).

5. A mold for precast fair-faced concrete stairs according to claim 1, characterized in that: The upper template assembly (3) includes multiple upper step assemblies connected end to end in sequence; the upper step assembly includes a first top plate (3-1) and a second top plate (3-2) that are perpendicular to each other; the right angle formed by the first top plate (3-1) and the second top plate (3-2) is provided with a limiting member (3-3), which can cooperate with the limiting groove (2-4) to limit the position of the first top plate (3-1) and the second top plate (3-2).

6. A mold for precast fair-faced concrete stairs according to claim 3, characterized in that: The side panel assembly (1) includes a side template (1-1), horizontal square timber (1-2), and multiple vertical square timbers (1-3); the top of the side template (1-1) is provided with a step groove that cooperates with each bottom step assembly; each bottom step assembly is mounted on the step groove and fixed by a second fastener (5); the horizontal square timber (1-2) and the vertical square timbers (1-3) are both fixed to the outside of the side template (1-1).

7. A mold for precast fair-faced concrete stairs according to claim 3, characterized in that: The first fastener (4) and the second fastener (5) are both made of gun nails; the first bottom plate (2-1), the second bottom plate (2-2), the first top plate (3-1) and the second top plate (3-2) are all made of wooden molds.

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