A pre-punching prefabricated stair protection frame

Abstract

This application relates to the field of building construction technology, and in particular to a prefabricated stair safety frame that does not require drilling. It includes locking blocks that snap onto both sides of the staircase and a safety railing for worker protection. Several locking blocks are provided, and multiple locking blocks are detachably connected to the safety railing. The bottom of each locking block has a clamping bolt and an abutment plate to increase the contact area between the clamping bolt and the staircase. The clamping bolt passes through the locking block and presses the abutment plate against the underside of the staircase. The locking blocks are secured to both sides of the staircase, and the clamping bolts are tightened to firmly press the abutment plate against the underside of the staircase, providing stable support for the locking blocks. The detachable connection between multiple locking blocks and the safety railing provides reliable safety protection for workers and facilitates the assembly and disassembly of the safety frame. Furthermore, the installation of the safety frame can be achieved without drilling into the staircase, effectively avoiding damage to the staircase structure, reducing subsequent repair work, and improving the construction efficiency of workers.

Description

Technical Field

[0001] This application relates to the field of technical construction technology, and in particular to a prefabricated staircase safety frame that does not require drilling. Background Technology

[0002] In the field of modern architecture, building structures are becoming increasingly diverse and complex, and the application of prefabricated components is expanding. Taking building staircases as an example, the installation of stair railings is usually the final step in the construction process. During the extensive preliminary construction work, the staircases are often left unprotected and in a dangerous state, posing a serious threat to the safety of construction workers going up and down the stairs. Therefore, installing reliable edge protection railings to ensure effective safety measures for going up and down stairs has become a crucial link in the construction safety assurance system.

[0003] Currently, the most common stair edge protection railings on the market are fixed using expansion bolts. While this method provides strong stability, it inevitably damages the finished building structure, requiring subsequent repairs. Furthermore, repairing finished building structures demands high-quality construction, and the entire process is not only labor-intensive but also extremely time-consuming, indicating areas for improvement. Utility Model Content

[0004] To avoid drilling into the staircase and improve the efficiency of construction workers, this application provides a prefabricated staircase safety frame that does not require drilling.

[0005] This application provides a prefabricated stair safety frame that requires no drilling, employing the following technical solution:

[0006] A prefabricated stair protection frame that does not require drilling includes snap-fit ​​blocks that snap onto both sides of the staircase and a guardrail for protecting workers. Several snap-fit ​​blocks are provided, and multiple snap-fit ​​blocks are detachably connected to the guardrail. The bottom of each snap-fit ​​block is provided with a clamping bolt and an abutment plate for increasing the contact area between the clamping bolt and the staircase. The clamping bolt passes through the snap-fit ​​block and presses the abutment plate against the underside of the staircase.

[0007] By adopting the above technical solution, the snap-fit ​​blocks are snapped onto both sides of the staircase, and the abutment plate is tightly pressed against the underside of the staircase by tightening the bolts, providing stable support for the snap-fit ​​blocks. At the same time, multiple snap-fit ​​blocks are detachably connected to the guardrail, providing reliable safety protection for workers and facilitating the assembly and disassembly of the guardrail. Furthermore, the guardrail can be installed without drilling holes in the staircase, effectively avoiding damage to the staircase structure, reducing subsequent repair work, and improving the construction efficiency of workers.

[0008] Preferably, any of the snap-fit ​​blocks is provided with a sleeve, and any of the sleeves is provided with an installation groove. The guardrail includes a handrail and a plurality of support rods for supporting the handrail. One end of any of the support rods is fixedly connected to the handrail, and the other end is inserted into the installation groove of the sleeve.

[0009] By adopting the above technical solution, the sleeve provides positioning and support for the support rod, which helps to enhance the stability of the guardrail. At the same time, the support rod and the mounting groove of the sleeve form a plug-in fit, which facilitates the quick installation or disassembly of the guardrail by workers, further improving construction efficiency.

[0010] Preferably, the tightening bolt is provided with a locking nut for preventing loosening, the upper surface of the locking nut abuts against the lower surface of the locking block, and the lower surface of the locking nut abuts against the bolt head of the tightening bolt.

[0011] By adopting the above technical solution and using the anti-loosening nut, the tightening bolts are effectively prevented from loosening during use due to factors such as personnel walking and stair vibration, which would affect the stability of the protective frame and ensure the safety of construction personnel.

[0012] Preferably, the locking block includes an upper locking block, a lower locking block, and an adjustment unit for connecting and adjusting the height distance between the upper locking block and the lower locking block. The upper locking block is locked to the top of the staircase, and the lower locking block is locked to the bottom of the staircase.

[0013] By adopting the above technical solution, the upper locking block is engaged with the top of the staircase, and the lower locking block is engaged with the bottom of the staircase. At the same time, the height distance between the upper and lower locking blocks can be flexibly adjusted according to the different thicknesses of the staircase by the adjustment unit. This makes the protective frame suitable for prefabricated staircases of various specifications, improves the versatility of the protective frame, and reduces the cost and time required to customize different protective frames due to differences in staircase specifications.

[0014] Preferably, the adjusting unit includes an adjusting bolt, an adjusting nut, and a buffer spring. The adjusting bolt passes through an upper locking block and a lower locking block and is threadedly connected to the adjusting nut. The adjusting nut is engaged and locked with the lower locking block. The buffer spring is sleeved on the adjusting bolt, with one end of the buffer spring connected to the upper locking block and the other end of the buffer spring connected to the lower locking block.

[0015] By adopting the above technical solution, the upper and lower locking blocks are inserted through the adjusting bolt and threadedly connected to the adjusting nut. The operator can adjust the distance between the upper and lower locking blocks by rotating the adjusting nut. At the same time, the buffer spring plays a role in buffering and pre-tightening, which enhances the stability of the protective frame.

[0016] Preferably, the abutment plate is provided with friction patterns to increase friction.

[0017] By adopting the above technical solution and utilizing the friction texture on the abutment plate, the friction between the abutment plate and the underside of the stairs is increased, further improving the stability of the locking block and thus ensuring the safety of the protective frame during use.

[0018] Preferably, a first reinforcing bar is welded onto the upper block to enhance the structural strength of the upper block's sidewalls.

[0019] By adopting the above technical solution and utilizing the first steel bar on the upper clamping block, the structural strength of the side wall of the upper clamping block is enhanced, the load-bearing capacity of the upper clamping block is improved, the upper clamping block is less prone to deformation or damage, the service life of the upper clamping block is extended, and thus the overall stability and safety of the protective frame are guaranteed.

[0020] Preferably, a second reinforcing bar is welded onto the lower clamping block to enhance the structural strength of the lower clamping block's sidewalls.

[0021] By adopting the above technical solution and utilizing the second steel bar on the lower clamping block, the structural strength of the side wall of the lower clamping block is enhanced, the compressive and deformation resistance of the lower clamping block is improved, damage to the lower clamping block is prevented during use, and the protective frame is stably fixed on the stairs, providing continuous and reliable safety protection for construction personnel.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The clip-on blocks are attached to both sides of the staircase, and the abutment plate is firmly pressed against the underside of the staircase by tightening the bolts, providing stable support for the clip-on blocks. Multiple clip-on blocks are detachably connected to the guardrail, providing reliable safety protection for workers and facilitating the assembly and disassembly of the guardrail. The guardrail can be installed without drilling holes in the staircase, effectively avoiding damage to the staircase structure, reducing subsequent repair work, and improving the construction efficiency of workers.

[0024] 2. The sleeve provides positioning and support for the support rod, enhancing the stability of the guardrail. The plug-in connection between the support rod and the sleeve's mounting groove facilitates quick installation and removal of the guardrail, further improving construction efficiency.

[0025] 3. The upper and lower locking blocks are inserted through the adjusting bolt and threadedly connected to the adjusting nut. The operator can adjust the distance between the upper and lower locking blocks by rotating the adjusting nut. At the same time, the buffer spring plays a role in buffering and pre-tightening, which enhances the stability of the protective frame. Attached Figure Description

[0026] Figure 1 This is an isometric schematic diagram of the main overall structure in Embodiment 1 of this application;

[0027] Figure 2 This is an exploded view of the main snap-fit ​​block structure in Embodiment 1 of this application;

[0028] Figure 3 This is an isometric schematic diagram of the main overall structure in Embodiment 2 of this application;

[0029] Figure 4 This is a structural diagram illustrating the main cooperative relationship between the upper card block, the lower card block, and the adjustment unit in Embodiment 2 of this application.

[0030] Reference numerals in the attached diagram: 1. Clamping block; 11. Upper clamping block; 111. First reinforcing bar; 12. Lower clamping block; 121. Second reinforcing bar; 13. Adjustment unit; 131. Adjusting bolt; 132. Adjusting nut; 133. Buffer spring; 2. Guardrail; 21. Handrail; 22. Support rod; 3. Sleeve; 4. Tightening bolt; 41. Anti-loosening nut; 5. Abutment plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail.

[0032] This application discloses a prefabricated staircase safety frame that does not require drilling.

[0033] Example 1:

[0034] Reference Figure 1 and Figure 2 A prefabricated stair guardrail that does not require drilling includes snap-fit ​​blocks 1 and guardrails 2 installed on both sides of the stair. Multiple snap-fit ​​blocks 1 are provided, each snap-fit ​​block 1 is C-shaped on three sides, and each snap-fit ​​block 1 has a snap-fit ​​groove adapted to the shape of the stair tread. In this embodiment, five sets of snap-fit ​​blocks 1 are provided, and any set of snap-fit ​​blocks 1 consists of two blocks. The two blocks 1 are symmetrically snapped onto both sides of the same stair tread through the snap-fit ​​groove, and the five snap-fit ​​blocks 1 located on the same side together form a detachable connection with the guardrail 2.

[0035] Reference Figure 1 Each guardrail 2 includes a handrail 21 and a support rod 22. The support rod 22 is set with five corresponding to the position and number of the snap-fit ​​blocks 1 on the same side of the staircase. Since the structure and connection method of each snap-fit ​​block 1 are the same, we will now take one snap-fit ​​block 1 as an example for explanation.

[0036] Reference Figure 1 and Figure 2The top of the snap-fit ​​block 1 is welded with a sleeve 3, and the sleeve 3 has an upward-facing mounting groove. One end of any support rod 22 is welded and fixed to the handrail 21, and the other end is inserted into the mounting groove of the sleeve 3. Thus, the handrail 21 and the support rod 22 provide reliable safety protection for workers, while also facilitating the assembly and disassembly of the protective frame. At the same time, the installation of the protective frame can be achieved without drilling holes in the stairs, improving the construction efficiency of workers.

[0037] Reference Figure 1 and Figure 2 The bottom inclination of the snap-fit ​​block 1 is parallel to the slope of the staircase. The bottom of the snap-fit ​​block 1 is provided with a clamping bolt 4 and abutment plate 5. The bottom of the snap-fit ​​block 1 is also provided with a threaded hole for threaded engagement with the clamping bolt 4. The clamping bolt 4 passes vertically through the threaded hole of the snap-fit ​​block 1 and presses the abutment plate 5 against the lower surface of the stair tread, thereby stably fixing the snap-fit ​​block 1 to the stair tread.

[0038] Reference Figure 1 and Figure 2 The anti-loosening nut 41 is threaded onto the tightening bolt 4, and the upper surface of the anti-loosening nut 41 abuts against the lower surface of the locking block 1. The lower surface of the anti-loosening nut 41 abuts against the bolt head of the tightening bolt 4. This effectively prevents the tightening bolt 4 from loosening during use due to factors such as personnel walking or stair vibration, thereby affecting the stability of the protective frame and ensuring that the protective frame is always in a stable working state, thus protecting the safety of construction personnel.

[0039] Reference Figure 1 and Figure 2 The upper surface of the abutment plate 5 is processed with cross-shaped friction texture, which increases the friction between the abutment plate 5 and the underside of the stairs. When the tightening bolt 4 presses the abutment plate 5 against the underside of the stairs, the friction texture can effectively prevent the abutment plate 5 from sliding on the stairs surface, further improving the stability of the snap-fit ​​block 1, thereby ensuring the safety of the protective frame during use. Even if the stairs surface is uneven or has a slight slope, the friction texture can still play a role to ensure that the protective frame is firmly fixed on the stairs.

[0040] The implementation principle of this application embodiment is as follows: During actual installation, firstly, the snap-fit ​​block 1 is snapped into the stair tread, then the wrench is used to tighten the clamping bolt 4 so that the abutment plate 5 is pressed against the bottom surface of the stair, then the support rod 22 is inserted into the mounting groove of the sleeve 3 and locked by the pin after insertion, and finally the handrail 21 is welded to the support rod 22 located on the same side, and the handrail 21 and the support rod 22 form a continuous guardrail 2.

[0041] When disassembly is required, simply loosen the tightening bolt 4 to disassemble the snap-fit ​​block 1 and the guardrail 2, thus improving the work efficiency of the staff.

[0042] Example 2:

[0043] The difference between Example 2 and Example 1 is that:

[0044] Reference Figure 3 and Figure 4 The locking block 1 includes an upper locking block 11, a lower locking block 12, and an adjustment unit 13. The shape of the upper locking block 11 is adapted to the upper edge of the stair tread, and the shape of the lower locking block 12 is adapted to the lower edge of the stair tread. The upper locking block 11 is locked to the top of the stair, and the lower locking block 12 is locked to the bottom of the stair. The connection distance between the upper locking block 11 and the lower locking block 12 is adjusted by the adjustment unit 13, so that the protective frame is suitable for prefabricated staircases of various specifications, improving the versatility of the protective frame and reducing the cost and time required to customize different protective frames due to differences in staircase specifications.

[0045] Reference Figure 3 and Figure 4 The adjustment unit 13 is provided in multiple sets. In this embodiment, the adjustment unit 13 is provided in two sets. Since the structure and connection method of the two sets of adjustment units 13 are the same, one of the adjustment units 13 will be used as an example for explanation.

[0046] Reference Figure 3 and Figure 4 The adjustment unit 13 includes an adjustment bolt 131, an adjustment nut 132, and a buffer spring 133. The upper locking block 11 and the lower locking block 12 are coaxially provided with guide holes. The adjustment bolt 131 passes vertically through the guide holes of the upper locking block 11 and the lower locking block 12 from top to bottom. The adjustment nut 132 is threadedly connected to the bolt rod of the adjustment bolt 131. The upper surface of the adjustment nut 132 is fitted and locked with the lower surface of the lower locking block 12. The buffer spring 133 is sleeved on the adjustment bolt 131, and the upper end of the buffer spring 133 abuts against the lower surface of the upper locking block 11, and the lower end of the buffer spring 133 abuts against the upper surface of the lower locking block 12.

[0047] Reference Figure 3 and Figure 4 The buffer spring 133 plays a role in buffering and pre-tightening during use. When the staircase is subjected to vibration or external impact, the buffer spring 133 can absorb some energy, reduce the rigid impact between the locking block 1 and the staircase, and protect the staircase structure. At the same time, the pre-tightening force of the buffer spring 133 can keep the upper locking block 11 and the lower locking block 12 tightly locked to the staircase, which enhances the stability of the protective frame.

[0048] Reference Figure 4The upper locking block 11 has five first reinforcing bars 111 welded to its side wall, and the lower locking block 12 has five second reinforcing bars 121 welded to its side wall, thereby enhancing the structural strength of the side walls of the upper locking block 11 and the lower locking block 12, making it less prone to deformation or damage, and thus ensuring the stability and safety of the protective frame during use.

[0049] The implementation principle of this application embodiment is as follows: During actual installation, the upper locking block 11 is locked onto the upper edge of the stair tread, and the lower locking block 12 is locked onto the lower edge of the stair tread. The adjusting nut 132 is adjusted so that the distance between the upper locking block 11 and the lower locking block 12 is slightly greater than the thickness of the stair. Then, the adjusting nut 132 is tightened until the buffer spring 133 is compressed to generate a preload. Next, the wrench is used to tighten the abutment bolt 4 so that the abutment plate 5 is pressed against the bottom surface of the stair. Then, the support rod 22 is inserted into the mounting groove of the sleeve 3 and locked by the pin. Finally, the handrail 21 is welded to the support rod 22 on the same side, and the handrail 21 and the support rod 22 form a continuous guardrail 2.

[0050] When disassembly is required, simply loosen the tightening bolt 4 and the adjusting bolt 131 to disassemble the snap-fit ​​block 1 and the guardrail 2, thereby improving the work efficiency of the staff.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-punched, pre-fabricated stair protection frame, characterized in that: The system includes snap-fit ​​blocks (1) that snap onto both sides of the staircase and guardrails (2) for protecting workers. Several snap-fit ​​blocks (1) are provided, and multiple snap-fit ​​blocks (1) and guardrails (2) are detachably connected. The bottom of each snap-fit ​​block (1) is provided with a clamping bolt (4) and an abutment plate (5) for increasing the contact area between the clamping bolt (4) and the staircase. The clamping bolt (4) passes through the snap-fit ​​block (1) and abuts the abutment plate (5) against the underside of the staircase.

2. A pre-fabricated punch-free stair protection frame according to claim 1, characterized in that: Each of the snap-fit ​​blocks (1) is provided with a sleeve (3), and each of the sleeves (3) is provided with an installation groove. The guardrail (2) includes a handrail (21) and a plurality of support rods (22) for supporting the handrail (21). One end of each of the support rods (22) is fixedly connected to the handrail (21), and the other end is inserted into the installation groove of the sleeve (3).

3. A pre-fabricated punch-free stair protection frame according to claim 1, characterized in that: The tightening bolt (4) is provided with a locking nut (41) for preventing loosening. The upper surface of the locking nut (41) abuts against the lower surface of the snap-fit ​​block (1), and the lower surface of the locking nut (41) abuts against the bolt head of the tightening bolt (4).

4. A pre-fabricated punch-free stair protection frame according to claim 1, characterized in that: The locking block (1) includes an upper locking block (11), a lower locking block (12), and an adjustment unit (13) for connecting and adjusting the height distance between the upper locking block (11) and the lower locking block (12). The upper locking block (11) is locked to the top of the staircase, and the lower locking block (12) is locked to the bottom of the staircase.

5. A pre-fabricated punch-free stair protection frame according to claim 4, characterized in that: The adjustment unit (13) includes an adjustment bolt (131), an adjustment nut (132), and a buffer spring (133). The adjustment bolt (131) passes through the upper locking block (11) and the lower locking block (12) and is threadedly connected to the adjustment nut (132). The adjustment nut (132) is engaged and locked with the lower locking block (12). The buffer spring (133) is sleeved on the adjustment bolt (131), and one end of the buffer spring (133) is connected to the upper locking block (11), and the other end of the buffer spring (133) is connected to the lower locking block (12).

6. A pre-fabricated punch-free stair protection frame according to claim 1, characterized in that: The abutment plate (5) is provided with friction patterns to increase friction.

7. A pre-fabricated punch-free stair protection frame according to claim 4, characterized in that: The upper block (11) is welded with a first steel bar (111) for enhancing the strength of the side wall structure of the upper block (11).

8. A pre-fabricated punch-free stair protection frame according to claim 4, characterized in that: The lower locking block (12) is welded with a second steel bar (121) to enhance the structural strength of the side wall of the lower locking block (12).

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