A new type of foundation pit peripheral protection device
Through innovative design of components such as columns, clamps, protective frames, and limiting anti-climbing mechanisms, the problems of low assembly efficiency and poor stability of traditional foundation pit perimeter protection devices have been solved, achieving rapid installation and efficient protection, and improving construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA OVERSEAS CONSTR LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional perimeter protection devices for foundation pits suffer from low assembly efficiency, poor stability, and a lack of effective anti-climbing structures, resulting in significant safety hazards.
It adopts components such as columns, clamps, protective frames, and limit and anti-climb mechanisms. The quick connection and limit design improve assembly efficiency and enhance stability. The reinforced legs and base blocks improve the fixing point with the ground. Combined with the worm gear mechanism, the synchronous descent of the inserted column is realized, simplifying the installation process.
It improved assembly efficiency, enhanced the stability and safety of protective devices, reduced climbing difficulty, and improved construction safety and efficiency.
Smart Images

Figure CN224300562U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective device technology, specifically a novel protective device for the perimeter of a foundation pit. Background Technology
[0002] In the construction process, foundation pit engineering is a crucial foundational task, providing the necessary working space for the construction of the building's underground structure. The surrounding environment of a foundation pit is complex and presents numerous safety hazards; inadequate protective measures can easily lead to accidents, causing casualties and property damage. Therefore, the performance and reliability of foundation pit perimeter protection devices, as key facilities for ensuring construction safety, are of paramount importance.
[0003] Traditional perimeter protection devices for foundation pits are mostly simple in structure, mainly consisting of columns and protective nets or fences. During installation, these traditional devices are usually installed by welding or multiple bolts, resulting in low assembly efficiency. At the same time, the connection between the columns and the ground in traditional protective devices is simple, generally only by setting a simple fixing structure at the bottom of the column to connect it to the ground, resulting in poor stability. In addition, multiple ground nails need to be inserted into the ground, which leads to low installation efficiency. Furthermore, traditional protective devices lack effective anti-climbing structures and cannot prevent people from climbing the protective devices.
[0004] Therefore, we propose a new type of perimeter protection device for foundation pits to solve the above problems. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a novel protective device for the perimeter of foundation pits, which solves the problems mentioned in the background section.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0009] A novel foundation pit perimeter protection device includes columns, each with two clamping sleeves fixedly connected to its left and right side walls. A protective frame is provided between the columns, with connecting ears fixedly connected to the upper and lower ends of the left and right side walls of the protective frame. A plug matching the clamping sleeves is fixedly connected to the lower end of each connecting ear. A limiting anti-climbing mechanism is provided on the upper side of the protective frame. A fixing block is fixedly connected to the bottom of the column. An assembly block is detachably connected to the bottom of the column via bolt assemblies. Reinforcing legs are fixedly connected to the front and rear side walls of the assembly block, with a base block fixedly connected to the bottom of each reinforcing leg. A lifting block is provided on the upper side of the fixing block, and four... Each corner is fixedly connected with a first insert post. Lifting plates are fixedly connected to the front and rear side walls of the lifting block. Two second insert posts are fixedly connected to the lower end face of the lifting plate. A connecting frame is fixedly connected to the assembly block. A threaded rod is rotatably connected inside the connecting frame. A moving block is threadedly connected to the threaded rod. Two connecting rods are symmetrically and fixedly connected to the moving block. The bottom ends of the two connecting rods are fixedly connected to the upper end face of the lifting plate, respectively. A worm gear is fixedly connected to the top end of the threaded rod via an extension shaft. A connecting seat is fixedly connected to the side wall of the connecting frame. A worm gear meshing with the worm gear is rotatably connected inside the connecting seat. A handwheel is fixedly connected to one end of the worm gear.
[0010] Furthermore, the limiting anti-climbing mechanism includes symmetrical bearing sleeves fixed on the left and right side walls of the top of the column. A horizontal tube is provided between two adjacent bearing sleeves. The two ends of the horizontal tube are respectively connected to the bearing sleeve by bolt assemblies. The lower end of the horizontal tube is symmetrically and fixedly connected to two limiting tubes. The bottom ends of the two limiting tubes are in contact with the upper end of the protective frame. A set of anti-climbing posts are fixedly connected at equal intervals to the upper end of the horizontal tube.
[0011] Furthermore, reflective strips are fixedly connected to the front and rear side walls of the column, and the column has an internal hollow structure design.
[0012] Furthermore, a set of first extension blocks are fixedly connected at equal intervals on the left and right side walls of the protective frame, and a set of second extension blocks are fixedly connected at equal intervals on the lower end face of the protective frame.
[0013] Furthermore, each of the four corners of the fixing block is provided with a first insertion hole that matches the first insertion post, and the bottom block is provided with two second insertion holes that match the second insertion post.
[0014] Furthermore, the plug is cylindrical in shape, and the sleeve has a circular through hole that matches the plug.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides a novel protective device for the perimeter of a foundation pit, which has the following beneficial effects:
[0017] 1. This utility model enables rapid assembly of the protective device through a column, a sleeve, a protective frame, a connecting ear, a plug, and an anti-climbing mechanism. The protective frame is pressed and limited by a limiting tube, reducing the amount of bolts used and significantly improving assembly efficiency. At the same time, it increases the difficulty of climbing, thus achieving the effect of preventing climbing and improving the safety of the protection.
[0018] 2. This utility model strengthens the fixing points with the ground by reinforcing the legs and base block, thereby improving the stability of the protective device. By rotating the handwheel, the threaded rod is rotated, causing the moving block and connecting rod to descend synchronously. This allows the first and second inserts to descend and insert into the ground simultaneously, eliminating the need to insert the inserts into the ground separately, shortening the fixing time, and improving the installation efficiency of the protective device. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the separation structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the overall rear structure of this utility model;
[0022] Figure 4 This is a structural schematic diagram of the reinforcing leg and its connecting components of this utility model;
[0023] Figure 5 This is a structural schematic diagram of the assembly block and its connecting components of this utility model;
[0024] Figure 6 This is a front view structural diagram of the present utility model.
[0025] In the diagram: 1. Column; 2. Sleeve; 3. Protective frame; 4. Connecting ear; 5. Plug; 6. Limiting anti-climbing mechanism; 601. Bearing sleeve; 602. Horizontal tube; 603. Limiting tube; 604. Anti-climbing column; 7. Fixing block; 8. Assembly block; 9. Reinforcing leg; 10. Base block; 11. Lifting block; 12. First insert post; 13. Lifting plate; 14. Second insert post; 15. Connecting frame; 16. Threaded rod; 17. Moving block; 18. Connecting rod; 19. Extension shaft; 20. Worm gear; 21. Connecting seat; 22. Worm; 23. Handwheel; 24. Reflective strip; 25. First extension block; 26. Second extension block. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Example
[0028] like Figures 1-6 As shown in the figure, a novel foundation pit perimeter protection device according to one embodiment of this utility model includes a column 1. Two clamps 2 are fixedly connected to the left and right side walls of the column 1. A protective frame 3 is provided between the columns 1. Connecting ears 4 are fixedly connected to the upper and lower ends of the left and right side walls of the protective frame 3. A plug 5 matching the clamp 2 is fixedly connected to the lower end of the connecting ears 4. A limiting anti-climbing mechanism 6 is provided on the upper side of the protective frame 3. A fixing block 7 is fixedly connected to the bottom of the column 1. An assembly block 8 is detachably connected to the bottom of the column 1 by a bolt assembly. Reinforcing legs 9 are fixedly connected to the front and rear side walls of the assembly block 8. A bottom block 10 is fixedly connected to the bottom of the reinforcing legs 9. A lifting block 11 is provided on the upper side of the fixing block 7. The lifting block 11 lowers... First inserts 12 are fixedly connected to the four corners of the end face. Lifting plates 13 are fixedly connected to the front and rear side walls of the lifting block 11. Two second inserts 14 are fixedly connected to the lower end face of the lifting plate 13. A connecting frame 15 is fixedly connected to the assembly block 8. A threaded rod 16 is rotatably connected inside the connecting frame 15. A moving block 17 is threadedly connected to the threaded rod 16. Two connecting rods 18 are symmetrically and fixedly connected to the moving block 17. The bottom ends of the two connecting rods 18 are fixedly connected to the upper end face of the lifting plate 13. A worm gear 20 is fixedly connected to the top of the threaded rod 16 through an extension shaft 19. A connecting seat 21 is fixedly connected to the side wall of the connecting frame 15. A worm 22 that meshes with the worm gear 20 is rotatably connected inside the connecting seat 21. A handwheel 23 is fixedly connected to one end of the worm gear 22. By inserting the plug 5 into the sleeve 2, the column 1 and the protective frame 3 are initially connected, thus constructing the basic protective frame around the pit. By rotating the handwheel 23, the handwheel 23 drives the worm gear 22 to rotate, the worm gear 22 drives the worm wheel 20 to rotate, and the worm wheel 20 drives the threaded rod 16 to rotate through the extension shaft 19. The rotation of the threaded rod 16 causes the moving block 17 to descend, which in turn drives the lifting plate 13 and the lifting block 11 to move downward, thereby controlling the first insertion column 12 and the second insertion column 14 to move downward, thus fixing the fixed block 7 and the bottom block 10 to the ground, improving the stability of the protective device, and also improving the assembly efficiency.
[0029] like Figure 1 and Figure 2As shown, in some embodiments, the limiting anti-climbing mechanism 6 includes symmetrical bearing sleeves 601 fixed on the left and right side walls of the top of the column 1. A horizontal tube 602 is provided between two adjacent bearing sleeves 601. The two ends of the horizontal tube 602 are respectively connected to the bearing sleeves 601 by bolt assemblies. Two limiting tubes 603 are symmetrically and fixedly connected to the lower end face of the horizontal tube 602. The bottom ends of the two limiting tubes 603 are in contact with the upper end face of the protective frame 3. A set of anti-climbing posts 604 are fixedly connected at equal intervals to the upper end face of the horizontal tube 602. The bottom ends of the two limiting tubes 603 are in contact with the upper end face of the protective frame 3, which plays a limiting role in the protective frame 3 and prevents the protective frame 3 from moving upward. The horizontal tube 602 and the bearing sleeve 601 are connected and fixed by bolt assemblies only. Compared with the prior art, the number of bolts used is significantly reduced and the assembly efficiency is improved. The set of anti-climbing posts 604 fixedly connected at equal intervals to the upper end face of the horizontal tube 602 increases the difficulty of climbing and plays an anti-climbing role, effectively ensuring the safety of the area around the foundation pit.
[0030] like Figure 1 and Figure 2 As shown, in some embodiments, reflective strips 24 are fixedly connected to the front and rear side walls of the column 1, and the column 1 has an internal hollow structure design; at night or in a dimly lit environment, the reflective strips 24 can reflect light to attract the attention of pedestrians and vehicles, play a warning role, and avoid accidental collisions. The internal hollow structure design of the column 1 reduces the weight of the column 1, facilitates transportation and installation, and also reduces material costs.
[0031] like Figure 3 As shown, in some embodiments, a set of first extension blocks 25 are fixedly connected at equal intervals on the left and right sidewalls of the protective frame 3, and a set of second extension blocks 26 are fixedly connected at equal intervals on the lower end face of the protective frame 3; the first extension blocks 25 and the second extension blocks 26 increase the protective area of the protective frame 3 and improve the protective effect.
[0032] like Figure 1 and Figure 4 As shown, in some embodiments, the four corners of the fixing block 7 are provided with first insertion holes that match the first insertion post 12, and the bottom block 10 is provided with two second insertion holes that match the second insertion post 14; the first insertion post 12 can be inserted into the first insertion hole of the fixing block 7 and inserted downward into the ground, and the second insertion post 14 can be inserted into the second insertion hole of the bottom block 10 and inserted downward into the ground, further enhancing the connection stability between the column 1 and the ground and preventing the column 1 from shaking or tilting.
[0033] like Figure 2 As shown, in some embodiments, the plug 5 is cylindrical in shape, and the sleeve 2 has a circular through hole that matches the plug 5; this enables the quick connection between the protective frame 3 and the column 1. This connection method is simple and convenient, easy to disassemble and assemble, and improves construction efficiency.
[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A novel foundation pit perimeter protection device, comprising a column (1), characterized in that: Two clips (2) are fixedly connected to the left and right side walls of the column (1). A protective frame (3) is provided between the columns (1). Connecting ears (4) are fixedly connected to the upper and lower ends of the left and right side walls of the protective frame (3). A plug (5) matching the clip (2) is fixedly connected to the lower end of the connecting ears (4). A limiting anti-climbing mechanism (6) is provided on the upper side of the protective frame (3). A fixing block (7) is fixedly connected to the bottom of the column (1). An assembly block (8) is detachably connected to the bottom of the column (1) by a bolt assembly. A reinforcing leg (9) is fixedly connected to the front and rear side walls of the assembly block (8). A bottom block (10) is fixedly connected to the bottom of the reinforcing leg (9). A lifting block (11) is provided on the upper side of the fixing block (7). A first insert is fixedly connected to the four corners of the lower end of the lifting block (11). 12) Lifting plates (13) are fixedly connected to the front and rear side walls of the lifting block (11). Two second inserts (14) are fixedly connected to the lower end face of the lifting plate (13). A connecting frame (15) is fixedly connected to the assembly block (8). A threaded rod (16) is rotatably connected inside the connecting frame (15). A moving block (17) is threadedly connected to the threaded rod (16). Two connecting rods (18) are symmetrically and fixedly connected to the moving block (17). The bottom ends of the two connecting rods (18) are fixedly connected to the upper end face of the lifting plate (13). The top end of the threaded rod (16) is fixedly connected to a worm gear (20) through an extension shaft (19). A connecting seat (21) is fixedly connected to the side wall of the connecting frame (15). A worm (22) that meshes with the worm gear (20) is rotatably connected inside the connecting seat (21). A handwheel (23) is fixedly connected to one end of the worm (22).
2. The novel foundation pit perimeter protection device according to claim 1, characterized in that: The limiting anti-climbing mechanism (6) includes symmetrical bearing sleeves (601) fixed on the left and right side walls of the top of the column (1). A horizontal tube (602) is provided between two adjacent bearing sleeves (601). The two ends of the horizontal tube (602) are connected to the bearing sleeves (601) by bolt assemblies. The lower end of the horizontal tube (602) is symmetrically and fixedly connected to two limiting tubes (603). The bottom ends of the two limiting tubes (603) are in contact with the upper end of the protective frame (3). A set of anti-climbing columns (604) are fixedly connected at equal intervals on the upper end of the horizontal tube (602).
3. The novel foundation pit perimeter protection device according to claim 1, characterized in that: Reflective strips (24) are fixedly connected to the front and rear side walls of the column (1), and the column (1) has an internal hollow structure design.
4. The novel foundation pit perimeter protection device according to claim 1, characterized in that: A set of first extension blocks (25) are fixedly connected at equal intervals on the left and right side walls of the protective frame (3), and a set of second extension blocks (26) are fixedly connected at equal intervals on the lower end face of the protective frame (3).
5. A novel foundation pit perimeter protection device according to claim 1, characterized in that: The four corners of the fixing block (7) are provided with first insertion holes that match the first insertion post (12), and the bottom block (10) has two second insertion holes that match the second insertion post (14).
6. The novel foundation pit perimeter protection device according to claim 1, characterized in that: The plug (5) is cylindrical in shape, and the sleeve (2) has a circular through hole that matches the plug (5).