A standardized staircase for deep foundation pits

Abstract

This utility model belongs to the field of deep foundation pit stairs, specifically disclosing a standardized staircase for deep foundation pits, including diagonal braces, vertical braces, and treads. The treads are spaced apart and constructed as a stepped structure. Each tread has holes on its surface for water seepage. Mounting shafts are located at both ends of the treads, and these shafts are mounted to the diagonal braces via snap-fit ​​fasteners. A positioning assembly is also included, comprising a shaft assembly fixedly mounted to the end of the mounting shaft. The shaft assembly has an extension portion with evenly distributed circumferential breaks on the extension portion. A connecting rod is detachably mounted on the axis of the shaft assembly. The connecting rod can rotate along the axis of the shaft assembly and extends radially along the shaft assembly, engaging with the breaks. A column is also mounted at the end of the connecting rod, and the column is mounted to the diagonal brace via snap-fit ​​fasteners. By setting the treads as a standardized single plate, compared to the conventional method of using double steel pipes with nailed shelves, installation and removal are more convenient, and the anti-slip effect is better.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit stairs, specifically to a standardized staircase for deep foundation pits. Background Technology

[0002] In recent years, there has been an increasing number of underground construction tasks involving deep foundation pits. As the foundation pits become deeper and the construction period becomes longer, foundation pit ladders have become an essential facility for construction workers to enter and exit the construction site.

[0003] Currently, most commonly used staircases for foundation pit construction are constructed by driving steel pipe columns into the soil and then connecting the pipes with clamps to form the main frame of the staircase. At the footboard positions, double steel pipes are fixed together using clamps, and then shelves and anti-slip strips are nailed onto these double steel pipes. This construction method is both unstandardized and cumbersome, requiring numerous clamps, which is time-consuming, labor-intensive, and results in high labor costs. Furthermore, the anti-slip effect is poor, posing a safety hazard when going up and down the stairs during the rainy season. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model proposes a standardized staircase for deep foundation pits, which makes the installation and removal of the treads more convenient and provides better anti-slip effect.

[0005] This utility model discloses a standardized staircase for deep foundation pits, comprising diagonal braces and vertical braces, which are connected by snap fasteners to form the main frame of the staircase; it also includes treads installed at the bottom of the main frame, which are spaced apart and constructed as steps, with holes for water seepage on the surface of the treads; mounting shafts are provided at both ends of the treads, and the mounting shafts are installed on the diagonal braces by snap fasteners; positioning components are also provided on the mounting shafts;

[0006] The positioning assembly includes a shaft assembly fixedly mounted on the end of the mounting shaft. The shaft assembly has an extension portion with equally spaced breaks on the extension portion. A connecting rod is detachably mounted on the axis of the shaft assembly. The connecting rod is rotatable along the axis of the shaft assembly and extends radially along the shaft assembly, engaging with the breaks. A column is also mounted at the tail end of the connecting rod, and the column is mounted on the diagonal bar by a snap fastener.

[0007] The pedal has at least two holes.

[0008] The beneficial effects of this utility model are as follows: This utility model sets the pedal as a standardized single board. Compared to the conventional method of using double steel pipes with a layer of boards nailed on top, this pedal has holes for water seepage, and its concave surface prevents water accumulation, resulting in better anti-slip performance. Compared to the more conventional method of using double steel pipes as the pedal frame, this pedal eliminates the need for nailing a layer of boards or anti-slip strips, reducing the number of pedal fasteners required, simplifying installation, and lowering construction costs. The pedal's tilt can also be adjusted using positioning components, making the installation more standardized. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of the staircase in the embodiment;

[0010] Figure 2 for Figure 1 A magnified view of a portion of position A in the diagram;

[0011] Figure 3 This is an exploded view of the positioning components of the staircase in the embodiment;

[0012] Figure 4 This is a schematic diagram of the stair treads in the embodiment.

[0013] Explanation of reference numerals in the attached drawings: 1-Vertical rod, 2-Diagonal rod, 3-Pedal, 301-Mounting shaft, 302-Hole, 4-Snap fastener, 5-Positioning assembly, 501-Shaft kit, 5011-Mounting part, 5012-Extension part, 5013-Break, 5014-Connecting shaft, 502-Connecting rod, 5021-Sleeve, 503-Column, 504-Nut. Detailed Implementation

[0014] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding by those skilled in the art.

[0015] Example 1

[0016] See Figures 1 to 4 As shown, the standardized staircase for deep foundation pits in this embodiment includes diagonal braces 2 and vertical braces 1. The diagonal braces 2 and vertical braces 1 are connected by fasteners 4 to form the main frame of the staircase. The bottom of the frame is rectangular, and the two sides are parallelograms. The diagonal braces 2 extend along the direction of the stair steps. The diagonal braces 2 constitute the handrail and the keel frame of the staircase treads 3. Treads 3 are installed at the bottom of the main frame, and the treads 3 are installed at intervals on the bottom diagonal braces 2 to form the staircase step structure. The surface of the treads 3 is provided with holes 302 for water seepage to prevent water accumulation on the treads 3, while increasing the friction between them and the shoes of construction workers to prevent slipping and reduce safety hazards.

[0017] like Figure 2 , 4 As shown, the pedal 3 has mounting shafts 301 at both ends. The mounting shafts 301 are mounted on the bottom inclined rod 2 by means of a buckle 4, so that the pedal 3 can be flipped along its mounting shafts 301 to adjust its mounting angle.

[0018] like Figure 2 , Figure 3The standardized staircase for deep foundation pits also includes a positioning component 5. The positioning component 5 includes a shaft assembly 501 fixedly installed at the end of the mounting shaft 301. The shaft assembly 501 has a mounting portion 5011 and an extension portion 5012. The mounting portion 5011 can be fixedly connected to the mounting shaft 301 of the tread 3 by bolts or welding. The extension portion 5012 has evenly distributed circumferential cutouts 5013 for positioning.

[0019] A connecting rod 502, which has a U-shaped structure, is detachably mounted on the shaft assembly 501 along its axis. Figure 3 A connecting shaft 5014 is welded to the shaft assembly 501 shown, and a sleeve 5021 is welded to the connecting rod 502. The sleeve 5021 fits onto the connecting shaft 5014 and is then limited by a nut 504 (shown in the figure), allowing the connecting rod 502 to rotate along the axis of the shaft assembly 501. The connecting rod 502 extends radially along the shaft assembly 501 and can engage with the break 5013. A column 503 is also installed at the tail end of the connecting rod 502. The column 503 is installed on the diagonal rod 2 via a snap fastener 4, facilitating the positioning of the installation angle of the pedal 3.

[0020] During use, based on the inclination of the diagonal brace 2, firstly, all the pedals 3 that need to be installed, with their connecting rods 502, are uniformly engaged with the appropriate break points 5013. Next, the pedals 3 are placed on the diagonal brace 2, and the column members 503 are installed onto the diagonal brace 2 using the fasteners 4. Finally, as... Figure 2 As shown, the mounting shaft 301 of the shaft assembly 501 near the tread 3 is fastened to the diagonal bar 2 by the fastener 4. This makes the installation angle of the tread 3 more uniform and standardized, and also further prevents the fastener 4 from loosening and causing the tread 3 to rotate, increasing the reliability of the tread 3 and the safety of construction workers going up and down the stairs.

[0021] Meanwhile, the holes 302 provided on the pedal 3 can be two or more, which can enhance the strength of the pedal 3, reduce the weight of the pedal 3, and prevent water from accumulating on the pedal 3.

[0022] This invention designs the pedal 3 as a standardized single board. Compared to the conventional method of using double steel pipes with a nailed shelf, the pedal 3 has holes 302 for water seepage, and its concave surface prevents water accumulation and provides better anti-slip properties. Compared to the conventional method of using double steel pipes as the keel of the pedal 3, this pedal 3 eliminates the need for nailing a shelf surface or anti-slip strips, reducing the number of fasteners required, simplifying installation, and lowering construction costs. The pedal 3 can also be tilted using the positioning component 5, making the installation of the pedal 3 more standardized.

[0023] Furthermore, the overall weight of the staircase is relatively lighter, resulting in lower costs. Due to its simple operation, the labor and materials used in its construction can be optimized, leading to better performance during repeated use. It is also aesthetically pleasing and meets the visual requirements for temporary facilities on standardized construction sites, ensuring a more aesthetically pleasing and standardized appearance.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A standardized staircase for deep foundation pits, comprising diagonal braces (2) and vertical braces (1), wherein the diagonal braces (2) and vertical braces (1) are connected by fasteners (4) to form the main frame of the staircase; characterized in that, It also includes a footboard (3) installed at the bottom of the main frame. The footboard (3) is spaced apart and constructed as a step. The surface of the footboard (3) is provided with holes (302) for water seepage. The footboard (3) is provided with mounting shafts (301) at both ends. The mounting shafts (301) are installed on the diagonal bar (2) by means of fasteners (4). The mounting shafts (301) are also provided with positioning components (5). The positioning assembly (5) includes a shaft kit (501) fixedly installed at the end of the mounting shaft (301). The shaft kit (501) has an extension (5012) and equidistant breaks (5013) on the extension (5012). A connecting rod (502) is detachably installed on the axis of the shaft kit (501). The connecting rod (502) can rotate along the axis of the shaft kit (501) and extends radially along the shaft kit (501) and can engage with the breaks (5013). A column (503) is also installed at the tail end of the connecting rod (502). The column (503) is installed on the diagonal bar (2) by a snap fastener (4).

2. The standardized staircase for deep foundation pits according to claim 1, characterized in that, The pedal (3) has at least two holes (302).

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