Fabricated steel structure stair for ultra-deep foundation pit
By designing the combined structure of fixed box and safety frame of prefabricated steel structure stairs, the problem of insufficient safety of stairs in ultra-deep foundation pits is solved, and effective protection for construction personnel is achieved.
Patent Information
- Application Number
- CN202421962871.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The safety of steel structure stairs in ultra-deep foundation pits cannot be guaranteed, resulting in frequent air trampling accidents caused by dim environments and causing personal injury.
A prefabricated steel structure staircase for ultra-deep foundation pit is designed, adopting a combined structure of a fixed box and a safety frame. Through the rotation and fixing of the armrest and rotary frame, the safety frame unfolds from the fixed box to provide protection.
It effectively improves the safety of steel structure stairs in ultra-deep foundation pits, prevents air-step accidents, and ensures the safety of construction workers.
Smart Images
Figure CN223034386U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of assembled steel structure stairs, in particular to an assembled steel structure stair for ultra-deep foundation pits. Background Technique
[0002] The main function of stairs is to reduce the difficulty of people climbing heights. By setting a reasonable step height, people can climb heights easily. Most traditional stairs are made of concrete pouring. However, due to the convenient installation and disassembly of steel structure stairs, their usage in temporary climbing sites has increased significantly. Especially in construction sites, almost all temporary climbing facilities are steel structure stairs, which are not only convenient for installation and disassembly but also can be reused.
[0003] At present, most common steel structure stairs have good feedback in terms of usage experience, but there are still the following prominent problems to varying degrees. The safety of stairs in ultra-deep foundation pits cannot be guaranteed. In many accidents, due to the dim environment, people step on the air of the stairs, resulting in injuries.
[0004] Therefore, the utility model develops an assembled steel structure stair aiming at the problems of the transportation and safety of the steel structure stair, which is of great significance for improving the safety of the steel structure stair. Content of the Utility Model
[0005] The purpose of the utility model is to provide an assembled steel structure stair for ultra-deep foundation pits. By using this device for work, the problem that the safety of the stair in the ultra-deep foundation pit cannot be guaranteed is solved.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: an assembled steel structure stair for ultra-deep foundation pits, including steps. Fixed boxes are arranged at both outer ends of the steps. A safety frame is movably installed inside the fixed boxes. The fixed boxes include a storage box assembly. A storage groove is opened inside the storage box assembly. A first fixed shaft is arranged inside the storage groove. Both ends of the first fixed shaft are fixedly connected with the storage box assembly. The safety frame includes a handrail frame. A plurality of rotating frames are rotatably arranged at the lower end of the handrail frame. Through holes are opened on both sides at the lower end of the rotating frame. The through holes are matched with the storage box assembly. A through hole is opened through the lower end of the rotating frame. The rotating frame is rotatably connected with the first fixed shaft. The through hole is matched with the first fixed shaft. A second fixed shaft is arranged at the center inside the upper end of the rotating frame. Both ends of the second fixed shaft are fixedly connected with the rotating frame. The handrail frame is rotatably arranged outside the second fixed shaft. Card slots are opened on both sides inside the upper end of the rotating frame. The card slots are matched with the handrail frame. When assembling and unfolding the stair, by rotating the handrail frame, the rotating frame rotates through the first fixed shaft. The rotating frame is fixed by the storage box assembly. Through the fixation between the handrail frame and the rotating frame, the safety frame is unfolded from the fixed box to complete the protection of construction workers.
[0007] Preferably, the ladder includes a footrest. A sliding groove is formed on one side of the footrest, and threaded holes I are formed at both ends of the footrest. A kick plate is fixedly arranged on the side of the footrest away from the sliding groove. Threaded holes II are formed on the lower sides of both ends of the kick plate. A positioning rod penetrates through both ends of the kick plate. A sliding strip is fixedly arranged at the upper end of one side of the kick plate. The sliding strip is slidably connected to the footrest and is matched with the sliding groove. The ladder is clamped through the sliding connection between the sliding strip and the footrest, and its position is confirmed through the positioning rod. The ladder can be fixed through the matching of the fixing box with the threaded holes I and II.
[0008] Preferably, multiple sets of hex nuts are arranged on the outer side of the fixing box. A connecting steel plate is fixedly arranged on the outer side of each set of hex nuts. The hex nuts are threadedly connected to the threaded holes I and II. Through the threaded connection between the hex nuts on the fixing box and the threaded holes I, the fixing box is fixed to the ladder, and the positions of each group are fixed through the connecting steel plate.
[0009] Preferably, the handrail frame includes a handrail. Multiple rotating components are fixedly arranged at the lower end of the handrail. The handrail frame is rotationally fixed and rotationally folded to the rotating frame through the rotating components.
[0010] Preferably, elastic members are arranged at both ends inside the storage groove. A clamping block is arranged at one end of the elastic member. The end of the elastic member away from the clamping block is fixedly connected to the storage box assembly. The expansion and contraction of the rotating frame in the storage groove are clamped and fixed through the elastic members on the storage groove.
[0011] Preferably, the rotating component includes a rotating ring. The inner side of the rotating ring is rotatably connected to the fixed shaft II. A rotating rod is fixedly arranged on the outer side of the rotating ring. A blocking block is fixedly arranged at one end of the rotating rod close to the rotating frame. Elastic clamping blocks are fixedly arranged at the centers of both sides of the rotating rod. The elastic clamping blocks are matched with the clamping grooves. Through the rotation of the rotating rod on the fixed shaft II during the rotation of the handrail frame, the rotation and folding between the handrail frame and the rotating frame are completed, and the fixation is completed through the clamping of the elastic clamping blocks to the clamping grooves.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] An assembled steel structure staircase for ultra - deep foundation pits proposed by the present utility model includes steps. Fixed boxes are arranged at both outer ends of the steps. A safety frame is movably installed inside the fixed boxes. The fixed boxes include a storage box assembly. A storage groove is formed inside the storage box assembly. A first fixed shaft is arranged inside the storage groove, and both ends of the first fixed shaft are fixedly connected to the storage box assembly. The safety frame includes a handrail frame. A plurality of rotating frames are rotatably arranged at the lower end of the handrail frame. Through - holes one are formed on both sides at the lower end of the rotating frame, and the through - holes one match the storage box assembly. A through - hole two is formed through the lower end of the rotating frame, and the rotating frame is rotatably connected to the first fixed shaft, and the through - hole two matches the first fixed shaft. A second fixed shaft is arranged at the center inside the upper end of the rotating frame, and both ends of the second fixed shaft are fixedly connected to the rotating frame. The handrail frame is rotatably arranged outside the second fixed shaft. Card slots are formed on both sides inside the upper end of the rotating frame, and the card slots match the handrail frame. When assembling and unfolding the staircase, by rotating the handrail frame, the rotating frame rotates through the first fixed shaft. The rotating frame is fixed by the storage box assembly. Through the fixation between the handrail frame and the rotating frame, the safety frame is unfolded from the fixed box to complete the protection of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2 is a schematic diagram of the structure of the fixed box of the present utility model;
[0016] Figure 3 is a schematic diagram of the structure of the tread board and the kick board of the present utility model;
[0017] Figure 4 is a schematic diagram of the structure of the safety frame and the storage box assembly of the present utility model;
[0018] Figure 5 is a schematic diagram of the planar structure of the storage groove of the present utility model;
[0019] Figure 6 is a schematic diagram of the structure of the handrail frame and the rotating frame of the present utility model;
[0020] Figure 7 is a schematic diagram of the structure of the rotating assembly of the present utility model;
[0021] Figure 8 is a schematic diagram of the structure of the card slot of the present utility model.
[0022] In the figure: 1. Ladder; 11. Footrest; 111. Sliding groove; 112. First threaded hole; 12. Kicking plate; 121. Second threaded hole; 122. Positioning rod; 123. Sliding bar; 2. Fixed box; 21. Hexagonal nut; 22. Connecting steel plate; 23. Storage box assembly; 231. Storage groove; 2311. Elastic member; 2312. Clamping block; 232. First fixed shaft; 3. Safety frame; 31. Handrail frame; 311. Handrail; 312. Rotating assembly; 3121. Rotating ring; 3122. Rotating rod; 3123. Blocking block; 3124. Elastic clamping block; 32. Rotating frame; 321. First hole; 322. Second hole; 323. Second fixed shaft; 324. Card slot. Detailed implementation manners
[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0024] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.
[0025] Combined with Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8, An assembled steel structure staircase for ultra - deep foundation pits, including steps 1. Fixed boxes 2 are arranged at both outer ends of the steps 1. A safety frame 3 is movably installed inside the fixed boxes 2. The fixed box 2 includes a storage box component 23. A storage groove 231 is opened inside the storage box component 23. A first fixed shaft 232 is arranged inside the storage groove 231. Both ends of the first fixed shaft 232 are fixedly connected to the storage box component 23. The safety frame 3 includes a handrail frame 31. A plurality of rotating frames 32 are rotatably arranged at the lower end of the handrail frame 31. Through holes 321 are opened on both sides of the lower end of the rotating frame 32. The through holes 321 match the storage box component 23. A through hole 322 is opened through the lower end of the rotating frame 32. The rotating frame 32 is rotatably connected to the first fixed shaft 232. The through hole 322 matches the first fixed shaft 232. A second fixed shaft 323 is arranged at the center of the upper end inside the rotating frame 32. Both ends of the second fixed shaft 323 are fixedly connected to the rotating frame 32. The handrail frame 31 is rotatably arranged outside the second fixed shaft 323. Card slots 324 are opened on both sides of the upper end inside the rotating frame 32. The card slots 324 match the handrail frame 31. When we assemble and unfold the staircase, by rotating the handrail frame 31, the rotating frame 32 is rotated through the first fixed shaft 232. The rotating frame 32 is fixed by the storage box component 23. Through the fixation between the handrail frame 31 and the rotating frame 32, the safety frame 3 is unfolded from the fixed box 2 to complete the protection of construction workers.
[0026] Combined with Figure 1 and Figure 3 , An assembled steel structure staircase for ultra - deep foundation pits, the step 1 includes a footrest 11. A sliding groove 111 is opened on one side of the footrest 11. Threaded holes 112 are opened at both ends of the footrest 11. A kick plate 12 is fixedly arranged on the side of the footrest 11 away from the sliding groove 111. Threaded holes 121 are opened on the lower sides of both ends of the kick plate 12. Positioning rods 122 penetrate through both ends of the kick plate 12. A sliding bar 123 is fixedly arranged at the upper end of one side of the kick plate 12. The sliding bar 123 is slidably connected to the footrest 11. The sliding bar 123 matches the sliding groove 111. The step 1 is clamped by sliding connection between the sliding bar 123 and the footrest 11. Its position is confirmed through the positioning rod 122. Through the matching of the fixed box 2 with the threaded hole 112 and the threaded hole 121, the steps 1 can be fixed.
[0027] Combined with Figure 1 and Figure 2 , An assembled steel structure staircase for ultra - deep foundation pits, a plurality of hexagonal nuts 21 are arranged outside the fixed box 2. A connecting steel plate 22 is fixedly arranged outside each group of hexagonal nuts 21. The hexagonal nuts 21 are threadedly connected to the threaded hole 112 and the threaded hole 121. Through the threaded connection between the hexagonal nuts 21 on the fixed box 2 and the threaded hole 112, the fixed box 2 is fixed to the step 1. The positions of each group are fixed through the connecting steel plate 22.
[0028] Combined with Figure 4 and Figure 6 Figure 6 , an assembled steel structure staircase for ultra - deep foundation pits, the handrail frame 31 includes a handrail 311, and a plurality of rotating components 312 are fixedly arranged at the lower end of the handrail 311. The handrail frame 31 is rotationally fixed and rotationally folded with the rotating frame 32 through the rotating components 312.
[0029] Combined with Figure 4 and Figure 5 Figure 5 , an assembled steel structure staircase for ultra - deep foundation pits, elastic members 2311 are arranged at both inner ends of the storage groove 231. One end of the elastic member 2311 is provided with a clamping block 2312, and the end of the elastic member 2311 far from the clamping block 2312 is fixedly connected to the storage box assembly 23. The expansion and contraction of the rotating frame 32 in the storage groove 231 is clamped and fixed by the elastic member 2311 on the storage groove 231.
[0030] Combined with Figures 6 - 8 Figures 6 - 8 , an assembled steel structure staircase for ultra - deep foundation pits, the rotating component 312 includes a rotating ring 3121. The inner side of the rotating ring 3121 is rotatably connected to the fixed shaft two 323. The outer side of the rotating ring 3121 is fixedly provided with a rotating rod 3122. One end of the rotating rod 3122 close to the rotating frame 32 is fixedly provided with a blocking block 3123. Elastic clamping blocks 3124 are fixedly arranged at the centers on both sides of the rotating rod 3122. The elastic clamping blocks 3124 are matched with the card slots 324. The rotation of the handrail frame 31 is through the rotation of the rotating rod 3122 on the fixed shaft two 323, so that the rotation and folding between the handrail frame 31 and the rotating frame 32 are completed. Through the clamping of the elastic clamping blocks 3124 to the card slots 324, the fixation is completed.
[0031] Working principle: When we assemble and unfold the staircase, by rotating the handrail frame 31, the rotating frame 32 is rotated through the fixed shaft one 232. The folding and fixation between the handrail frame 31 and the rotating frame 32 are rotated through the rotating ring 3121 on the rotating rod 3122. The inner side of the rotating ring 3121 is rotatably connected to the fixed shaft two 323, so that the rotation between the handrail frame 31 and the rotating frame 32 is enabled. The fixation is completed through the clamping of the elastic clamping blocks 3124 to the card slots 324. The expansion and contraction of the rotating frame 32 in the storage groove 231 is clamped and fixed by the elastic member 2311 on the storage groove 231, so that the safety frame 3 is fixed after being unfolded from the fixed box 2. The step 1 is clamped through the sliding connection between the sliding strip 123 and the footrest 11, and its position is confirmed through the positioning rod 122. The steps 1 are fixed to each other through the threaded connection between the hexagon nut 21 and the threaded hole one 112 and the threaded hole two 121, completing the fixed assembly of the staircase and protecting the safety of construction workers.
[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.
[0033] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An assembled steel structure staircase for an ultra-deep foundation pit, comprising a step (1), a fixed box (2) is arranged at both ends of the outer side of the step (1), a safety frame (3) is movably installed inside the fixed box (2), the fixed box (2) comprises a storage box assembly (23), a storage groove (231) is opened inside the storage box assembly (23), a fixed shaft (232) is arranged inside the storage groove (231), and both ends of the fixed shaft (232) are fixedly connected to the storage box assembly (23), characterized in that: The safety frame (3) comprises an armrest frame (31), a plurality of rotating frames (32) are rotatably arranged at the lower end of the armrest frame (31), a hole (321) is opened on both sides of the lower end of the rotating frame (32), the hole (321) matches the storage box assembly (23), a hole (322) is opened through the lower end of the rotating frame (32), the rotating frame (32) is rotatably connected to the fixed shaft (232), the hole (322) matches the fixed shaft (232), a fixed shaft (323) is arranged at the center of the upper end of the rotating frame (32), the two ends of the fixed shaft (323) are fixedly connected to the rotating frame (32), the outer side of the fixed shaft (323) is rotatably arranged with an armrest frame (31), and a card slot (324) is opened on both sides of the upper end of the rotating frame (32), and the card slot (324) matches the armrest frame (31).
2. The assembled steel structure staircase for ultra-deep foundation pit according to claim 1 is characterized by: The ladder (1) comprises a foot pedal (11), a sliding groove (111) is provided on one side of the foot pedal (11), threaded holes (112) are provided at both ends of the foot pedal (11), a kick plate (12) is fixedly provided on the side of the foot pedal (11) away from the sliding groove (111), threaded holes (121) are provided at the lower sides of both ends of the kick plate (12), positioning rods (122) are provided through both ends of the kick plate (12), a sliding bar (123) is fixedly provided on the upper end of one side of the kick plate (12), the sliding bar (123) is slidably connected to the foot pedal (11), and the sliding bar (123) matches the sliding groove (111).
3. The assembled steel structure staircase for ultra-deep foundation pit according to claim 2 is characterized by: A plurality of groups of hexagonal nuts (21) are arranged on the outside of the fixing box (2), a connecting steel plate (22) is fixedly arranged on the outside of each group of hexagonal nuts (21), and the hexagonal nuts (21) are threadedly connected to the first threaded hole (112) and the second threaded hole (121).
4. The assembled steel structure staircase for ultra-deep foundation pit according to claim 3 is characterized by: The handrail frame (31) comprises a handrail (311), and a plurality of rotating components (312) are fixedly arranged at the lower end of the handrail (311).
5. The assembled steel structure staircase for ultra-deep foundation pit according to claim 4 is characterized by: Elastic members (2311) are provided at both ends of the inner side of the storage groove (231), a clamping block (2312) is provided at one end of the elastic member (2311), and one end of the elastic member (2311) away from the clamping block (2312) is fixedly connected to the storage box assembly (23).
6. The assembled steel structure staircase for ultra-deep foundation pit according to claim 4, characterized in that: The rotating assembly (312) comprises a rotating ring (3121), the inner side of the rotating ring (3121) is rotatably connected to the second fixed shaft (323), the outer side of the rotating ring (3121) is fixedly provided with a rotating rod (3122), one end of the rotating rod (3122) close to the rotating frame (32) is fixedly provided with a blocking block (3123), and elastic clamping blocks (3124) are fixedly provided at the center of both sides of the rotating rod (3122), and the elastic clamping blocks (3124) match the clamping slots (324).