Combined stair convenient to construct

Abstract

The utility model relates to the technical field of stair construction, in particular to a combined stair convenient to construct, which comprises a stair frame, a U-shaped cushion block, a T-shaped scaffold board, a telescopic pull rod and a fastening fastener, the plurality of ladder assemblies are arranged at intervals in the width direction of a staircase on a construction site; a plurality of grooves are formed in each ladder frame at intervals in the length direction of the ladder frame; the U-shaped cushion block is embedded into the groove; a through groove is formed in the top of the U-shaped cushion block; the bottom of the T-shaped scaffold board is embedded into the through grooves of the U-shaped cushion blocks on the at least two ladder frames; the telescopic pull rod penetrates through the ladder assemblies which are arranged at intervals; and the fastening fasteners are arranged at two ends of the telescopic pull rod and are connected with the telescopic pull rod and the ladder frame to form an integral structure. The problems that in the building stair construction process, up-and-down passing of operators is difficult, and steel bar binding and concrete pouring construction are inconvenient are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair construction, and in particular relates to a combined staircase that is easy to construct. Background Art

[0002] Stairs are an important means of transportation connecting the upper and lower levels of a building structure, and the construction of stair sections has always been one of the key difficulties in building construction. At present, the technical process for stair section construction mainly refers to traditional construction methods. The bottom formwork is laid and the steel bars are tied on the already erected brackets on the lower level. The skirting boards and treads are installed and then concrete is poured to form the stairs. This process is inconvenient for workers to move up and down and for construction. The formwork and steel bars are easily stepped on during construction, thus affecting the quality of the finished product. Although traditional construction operations can set footholds by nailing small wooden boards to the wooden formwork above the brackets to facilitate workers to move up and down and tie the steel bars, however, with the popularization of aluminum alloy formwork (abbreviated as "aluminum formwork"), this method is not only difficult to implement due to the high strength of the aluminum formwork itself, but also easily damages the integrity of the aluminum film, affecting the turnover of the aluminum film.

[0003] Chinese patent CN217327143U discloses a temporary steel construction staircase. Two sets of hydraulic cylinders extend to raise the left ends of the two support frames, and the height of the telescopic rods is then limited by limit holes. This method, based on hydraulic principles, fully utilizes the material properties of steel structures and is suitable for personnel access and material and equipment transportation in high and low span structures on site. However, this method provides limited construction assistance, is not suitable for portability and transportation, and has low convenience and turnover.

[0004] Chinese patent CN217326642U discloses a portable construction ladder, comprising a first side bracket, a second side bracket, and a support assembly. The bracket plate is given a rotation function by means of a limit block and a limit hole, thereby realizing the spreading and storage of the bracket plate, and a handle is provided on the side of the bracket to complete the carrying of the ladder. This method is simple in process and easy to carry, and to a certain extent can solve the problem of workers getting up and down the staircase. However, this method has significant environmental limitations and ignores the coordination of on-site construction, making it difficult to ensure the passage of personnel while ensuring the progress of construction work. Utility Model Content

[0005] In view of the problems existing in the above-mentioned existing construction technology, the utility model provides a modular staircase that is easy to construct, which solves the problems of difficulty in up and down movement of workers, and inconvenience in steel bar binding and concrete pouring during building stair construction.

[0006] The utility model proposes a combined staircase that is easy to construct, comprising: a ladder frame, a U-shaped pad, a T-shaped scaffolding board, a telescopic pull rod and a fastener; there are multiple ladder frames, and the multiple ladder frames are arranged at intervals along the width direction of the stairwell at the construction site; each ladder frame is provided with multiple grooves at intervals along its length direction; the U-shaped pad is embedded in the groove; the top of the U-shaped pad is provided with a through groove; the bottom of the T-shaped scaffolding board is embedded in the through groove of the U-shaped pad on at least two of the ladder frames; the telescopic pull rod passes through the multiple ladder frames arranged at intervals; the fasteners are installed at both ends of the telescopic pull rod, connecting the telescopic pull rod and the ladder frame to form an integral structure.

[0007] Furthermore, the T-shaped scaffolding includes a T-shaped plate and limit blocks arranged at both ends of the T-shaped plate; the bottom of the T-shaped plate is embedded in the channel of the U-shaped pad, and the limit blocks are pressed against the outer side of the U-shaped pad.

[0008] Furthermore, the U-shaped pad is a wedge-shaped block, and the top of the U-shaped pad is a horizontal surface.

[0009] Furthermore, the ladder frame includes a ladder beam, a supporting platform arranged at both ends of the ladder beam, and a column arranged at the bottom of the supporting platform; the groove is arranged on the ladder beam.

[0010] Furthermore, a hole is provided on the support platform; and the telescopic pull rod passes through the hole.

[0011] Furthermore, the fastening fastener includes an anchor, a portion of which is embedded between the hole and the gap between the telescopic rod to anchor the telescopic rod.

[0012] Furthermore, the fastening fastener includes a nut; a threaded section is provided on the telescopic pull rod, the threaded section passes through the hole, and the nut is threadedly connected to the threaded section.

[0013] Furthermore, a through groove is provided on the top of the support platform for embedding the bottom of the T-shaped scaffolding board.

[0014] The beneficial effects of the utility model are:

[0015] (1) It can provide convenient conditions for construction workers to go up and down during the entire process from stair formwork support to concrete pouring and forming, and has a good anti-slip effect. It is especially suitable for situations where the surface of aluminum formwork is smooth, difficult to pass through, and the accompanying operations are difficult;

[0016] (2) There is enough space between adjacent T-shaped scaffolding boards for construction workers to operate. Workers can complete the laying and tying of steel bars through the gaps between the T-shaped scaffolding boards, and then install the skirting board and step board formwork and pour concrete by adjusting or removing some of the T-shaped scaffolding boards;

[0017] (3) It avoids stepping on the laid formwork and tied steel bars during construction due to traffic and work needs, which greatly improves the protection rate of finished products and ensures the molding effect of concrete;

[0018] (4) By utilizing the movable characteristics of the U-shaped pads and T-shaped scaffolding boards, when working with wide stairs, after the reinforcement and formwork support on one side are completed, the U-shaped pads and T-shaped scaffolding boards can be moved to the other side of the ladder frame to continue construction, effectively ensuring construction efficiency. Therefore, the utility model has technical advantages in the field of building staircase construction, such as scientific principles, simple processes, safety and efficiency, and ease of construction, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a modular staircase that is easy to construct according to the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the middle U-shaped pad and T-shaped scaffolding board;

[0021] Figure 3 for Figure 1 A schematic structural diagram of a telescopic pull rod connected to ladder frames at both ends.

[0022] In the figure: 1-ladder frame; 101-column; 102-base; 103-ladder beam; 2-U-shaped pad; 3-T-shaped scaffolding board; 301-T-shaped board; 302-limiting block; 4-telescopic pull rod; 5-fastening fastener. DETAILED DESCRIPTION

[0023] The following is a further detailed description of this application with reference to the accompanying drawings and specific implementations:

[0024] like Figure 1-Figure 3 The illustrated modular staircase is easy to construct and comprises a ladder frame 1, a U-shaped pad 2, a T-shaped scaffolding board 3, a telescopic pull rod 4 and a fastening fastener 5.

[0025] The ladder frame 1 is composed of a column 101, a base 102 and a ladder beam 103. Generally, at least two ladder frames 1 are required to be placed on the inner sides of the stair section to be constructed. The telescopic pull rod 4 passes through the holes reserved in the base 102 and is anchored on both sides of the base 102 using fasteners 5 to form a fixed whole to support the erection of upper components, the passage of personnel up and down, and construction operations.

[0026] The height of the column 101 and the length of the ladder beam 103 of the ladder frame 1 should be designed to be adjustable according to the actual situation on site, and the angle between the column 101 and the ladder beam 103 is controllable, thereby extending the applicability of the device to different types and sizes of stair sections to be constructed.

[0027] It is advisable to provide grooves on the ladder beam 103 every 300 to 500 mm, so as to ensure that workers can pass up and down conveniently while also leaving enough construction space for laying and tying steel bars.

[0028] The size of the groove should be consistent with the bottom size of the U-shaped pad 2 so that the U-shaped pad 2 can be firmly embedded.

[0029] The U-shaped pad 2 is placed on the groove formed in the ladder beam 103 , and a through groove is formed on the upper portion for placing the T-shaped scaffolding board 3 .

[0030] The U-shaped pad 2 is set as a movable component. On the one hand, it can reduce the required number of U-shaped pads 2 and T-shaped scaffolding boards 3. After the steel bars are tied and the formwork is supported on one side, the U-shaped pad 2 and T-shaped scaffolding boards 3 can be moved to the other side of the ladder 1 to continue construction. On the other hand, when the construction operation space is insufficient, some U-shaped pads 2 and T-shaped scaffolding boards 3 can be removed to leave enough operation space.

[0031] The T-shaped scaffolding 3 consists of a T-shaped plate 301 and a limit block 302. The T-shaped scaffolding 3 is placed above the U-shaped pad 2. In order to improve the stability of the component and ensure the safety of workers passing up and down and construction, the two ends of the T-shaped plate 301 are embedded in the through grooves reserved on the upper part of the U-shaped pad 2 to reduce unnecessary shaking of the T-shaped scaffolding 3. Limit blocks 302 are installed on both sides of the T-shaped plate 301 to prevent the T-shaped scaffolding 3 from sliding longitudinally.

[0032] The limiting block 302 is preferably designed as a rectangular parallelepiped structure, and can be installed on both sides of the T-shaped plate 301 by anchoring or welding using a relatively convenient construction process depending on the manufacturing material.

[0033] The telescopic pull rod 4 passes through the reserved hole of the base 102 and is used in conjunction with the fastening fastener 5 to connect two or more ladder frames 1 to form a stable fixed whole.

[0034] The telescopic rod 4 is preferably designed to be a telescopic structure, so that the length of the telescopic rod 4 can be adjusted according to the width of the staircase to be constructed. When the width of the staircase to be constructed is large, one telescopic rod 4 can be passed through the reserved holes of two or more pedestals 102, thereby facilitating the installation of the device. The telescopic structure of the telescopic rod 4 can adopt existing technology.

[0035] The fastening fasteners 5 are used in conjunction with the telescopic pull rod 4. After the telescopic pull rod 4 passes through the support platform 102, the fastening fasteners 5 are used on both sides of the support platform 102 for anchoring.

[0036] Depending on the material, process, and shape of the telescopic rod 4, the fastener 5 can be designed as a nut or anchor to enhance the overall stability of the device. For example, if the fastener 5 is an anchor, a portion of the anchor is embedded in the gap between the hole and the telescopic rod 4, anchoring the telescopic rod 4. If the fastener 5 is a nut, the telescopic rod 4 is provided with a threaded section that extends through the hole, and the nut is threadedly connected to the threaded section to restrict axial movement of the telescopic rod 4.

[0037] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A modular staircase that is easy to construct, characterized in that: include: A ladder frame, a U-shaped pad, a T-shaped scaffolding board, a telescopic pull rod and a fastener; there are multiple ladder frames, and the multiple ladder frames are arranged at intervals along the width direction of the stairwell at the construction site; each ladder frame is provided with multiple grooves at intervals along its length direction; the U-shaped pad is embedded in the groove; the top of the U-shaped pad is provided with a through groove; the bottom of the T-shaped scaffolding board is embedded in the through groove of the U-shaped pad on at least two of the ladder frames; the telescopic pull rod passes through the multiple ladder frames arranged at intervals; the fasteners are installed at both ends of the telescopic pull rod, connecting the telescopic pull rod and the ladder frame to form an integral structure.

2. The modular staircase that is easy to construct according to claim 1 is characterized in that: The T-shaped scaffolding includes a T-shaped plate and limit blocks arranged at both ends of the T-shaped plate; the bottom of the T-shaped plate is embedded in the channel of the U-shaped pad, and the limit blocks are pressed against the outer side of the U-shaped pad.

3. The modular staircase that is easy to construct according to claim 1 is characterized in that: The U-shaped pad is a wedge-shaped block, and the top of the U-shaped pad is a horizontal surface.

4. The modular staircase that is easy to construct according to claim 1 is characterized in that: The ladder frame includes a ladder beam, a supporting platform arranged at both ends of the ladder beam, and a column arranged at the bottom of the supporting platform; the groove is arranged on the ladder beam.

5. The modular staircase that is easy to construct according to claim 4 is characterized in that: The support platform is provided with a hole; the telescopic pull rod passes through the hole.

6. The modular staircase that is easy to construct according to claim 5 is characterized in that: The fastening fastener includes an anchor, a portion of which is embedded between the hole and the gap between the telescopic rod to anchor the telescopic rod.

7. The modular staircase that is easy to construct according to claim 5 is characterized in that: The fastening fastener includes a nut; a threaded section is provided on the telescopic pull rod, the threaded section passes through the hole, and the nut is threadedly connected to the threaded section.

8. The modular staircase that is easy to construct according to claim 4 is characterized in that: The top of the support is provided with a through groove for embedding the bottom of the T-shaped scaffolding board.

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