Safety protection device for trench excavation construction
By using a rotating wheel and threaded rod design, the length of the protective plate can be adjusted. Combined with the monitoring of pressure sensors and warning lights, this solves the problem that existing devices cannot adapt to different groove widths, thereby improving flexibility and safety while reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING MUNICIPAL ONE CONSTR SUPERVISION CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-04-28
AI Technical Summary
Existing trench excavation safety protection devices cannot adapt to different trench widths, have low flexibility, and are not conducive to cost reduction.
The design employs a rotating wheel to drive a threaded rod and a connecting column, and the length of the protective plate can be adjusted through the cooperation of a limiting groove and a limiting block; soil pressure monitoring and warning are carried out in conjunction with a pressure sensor and a warning light; and the integrated design of the filter screen and drainage holes achieves integrated protection and drainage.
It improves the flexibility of the device, adapts to different trench widths, reduces costs, and enhances construction safety by providing real-time monitoring and alerts, preventing soil collapse.
Smart Images
Figure CN224173343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of trench excavation safety protection devices, and in particular to a trench excavation construction safety protection device. Background Technology
[0002] Trench excavation is a common procedure in civil engineering construction, especially in municipal pipeline laying and foundation construction. With rapid urbanization and a surge in demand for underground pipeline networks, safety issues during trench excavation are becoming increasingly prominent. Traditional excavation methods often employ vertical excavation or simple slope laying, but these are prone to slope collapse and soil slippage, leading to frequent safety accidents. Therefore, a safety protection device for trench excavation construction is needed.
[0003] A search revealed a Chinese patent publication number: CN215630022U, which discloses a safety protection device for trench excavation construction, including a support frame and two protective plates. The two protective plates are respectively installed on the left and right sides of the support frame, and the support frame and the two protective plates together form a protective cavity. The top and bottom of the support frame have openings that communicate with the protective cavity.
[0004] The aforementioned utility model not only has a simple structure and is easy to use, but also provides protection for construction workers in the event of localized trench collapse, thus ensuring their safety. However, in practical use, it cannot adapt well to different trench widths, has low flexibility, and is not conducive to cost reduction. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a safety protection device for trench excavation construction, which aims to improve the problems of existing technology that cannot adapt well to different trench widths, has low flexibility, and is not convenient for reducing costs.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a safety protection device for trench excavation construction, comprising a load-bearing shell, a rotating wheel rotatably connected inside the load-bearing shell, a threaded rod threadedly connected inside the rotating wheel, the outer wall of the threaded rod threadedly connected to the inside of the load-bearing shell, a connecting column fixedly connected to the outer wall of the threaded rod, the outer wall of the connecting column slidably connected to the inner wall of the load-bearing shell, a limit block fixedly connected to the left outer wall of the load-bearing shell, the outer wall of the limit block fixedly connected to the right outer wall of the connecting column, a protective plate slidably connected to the outer wall of the limit block, a limit groove formed inside the protective plate, the outer wall of the limit block slidably connected to the inner wall of the limit groove, a support frame slidably connected to the outer wall of the protective plate, a pressure sensor disposed inside the support frame, a warning light electrically connected to the output end of the pressure sensor, the outer wall of the warning light fixedly connected to the inside of the support frame, and a filter assembly disposed on the outer wall of the protective plate.
[0007] The above technical solution allows the connecting column to move synchronously by rotating the wheel and driving the threaded rod. The length can be adjusted according to the width of the trench, making the protective plate adaptable to trenches of various widths, improving flexibility, reducing costs, and providing protection by blocking the soil on both sides of the trench. With the cooperation of pressure sensors and warning lights, the soil pressure in the trench can be monitored and warned in a timely manner, reminding workers and improving the safety rate of operations.
[0008] As a further description of the above technical solution:
[0009] The filter assembly includes a support plate, the outer wall of which is slidably connected to the outer wall of a protective plate, a filter screen is fixedly connected to the inside of the support plate, and a support leg is fixedly connected to the outer wall of the support plate, the outer wall of which is slidably connected to the inside of the protective plate.
[0010] The above technical solution ensures the stability of the filter screen by fixing it to the outer wall of the support plate. The filter screen can block and filter the mud and sand generated in the trench. By locking the support legs inside the protective plate, the filter screen can better protect the drainage holes.
[0011] As a further description of the above technical solution:
[0012] The protective plate has drainage holes inside, which are located on the back side of the filter screen.
[0013] The above technical solution integrates protection and drainage by opening drainage holes inside the protective plate, reducing costs. The drainage holes also allow water to drain from deep trenches, preventing soil instability caused by hydrostatic pressure and effectively improving the anti-collapse effect.
[0014] As a further description of the above technical solution:
[0015] The protective plate has a fixed column that is slidably connected inside, and a clamping block is fixedly connected to the outer wall of the fixed column. The outer wall of the clamping block is slidably connected to the outer wall of the support leg.
[0016] The above technical solution involves fixing the clamping block to the outer wall of the fixing column, which supports and fixes the clamping block. The clamping block also clamps the support leg, fixing it inside the protective plate and maintaining the stability of the filter screen.
[0017] As a further description of the above technical solution:
[0018] A spring is fitted on the outer wall of the fixed column. One end of the spring is fixedly connected to the outer wall of the clamping block, and the other end of the spring is fixedly connected to the inside of the protective plate.
[0019] The above technical solution allows the clamping block to be reset by the elastic force of the spring itself, so that the clamping block can move to its original position after the compression ends, and further allows the clamping block to clamp and limit the displacement of the outrigger.
[0020] As a further description of the above technical solution:
[0021] The clamping block is fixedly connected to a support column inside, and a pulley is rotatably connected to the outer wall of the support column. The outer wall of the pulley is slidably connected to the inside of the protective plate.
[0022] The above technical solution allows for the following: the fixed column can fix the support column, the support column can support the pulley, and the sliding of the pulley can make the movement of the clamping block after being squeezed faster, reducing the sliding resistance caused by the disassembly of the spring.
[0023] As a further description of the above technical solution:
[0024] The protective plate is fixedly connected to a support block inside, and the outer wall of the support leg is slidably connected to the outer wall of the support block.
[0025] The above technical solution allows the support block to assist the clamping block in clamping and fixing the outriggers, ensuring the stability of the outriggers inside the protective plate.
[0026] As a further description of the above technical solution:
[0027] The support block is located directly in front of the clamping block.
[0028] The above technical solution involves a symmetrical arrangement of the support block and clamping block, which provides a more stable clamping effect on the outriggers.
[0029] This utility model has the following beneficial effects:
[0030] 1. In this utility model, rotating the rotating wheel can cause the threaded rod to move the connecting column, adapting to different groove widths and improving flexibility. The cooperation of the limiting groove and the limiting block plays the role of supporting the two protective plates. The pressure sensor and warning light can play a protective and early warning role for the staff.
[0031] 2. In this utility model, the filter screen can be rotated through the spring and the support column, which can drive the pulley to move quickly inside the protective plate. The pulley and the support block can clamp the legs to prevent deviation, ensuring the stability of the support plate. This further enables the quick disassembly of the filter screen and avoids damage to the filter screen during disassembly, which could cause the drainage hole to be blocked by mud and sand. Attached Figure Description
[0032] Figure 1 This is a perspective view of a trench excavation construction safety protection device proposed in this utility model;
[0033] Figure 2 This is a partial structural diagram of the support frame of a trench excavation construction safety protection device proposed in this utility model;
[0034] Figure 3 This is a partial structural diagram of the threaded rod of a trench excavation construction safety protection device proposed in this utility model;
[0035] Figure 4 This is a partial structural diagram of the spring in a trench excavation construction safety protection device proposed in this utility model.
[0036] Legend:
[0037] 1. Load-bearing shell; 2. Rotating wheel; 3. Threaded rod; 4. Connecting column; 5. Limiting block; 6. Protective plate; 7. Limiting groove; 8. Support frame; 9. Pressure sensor; 10. Warning light; 11. Filter assembly; 1101. Support plate; 1102. Filter screen; 1103. Support leg; 12. Fixing column; 13. Clamping block; 14. Spring; 15. Supporting column; 16. Pulley; 17. Supporting block; 18. Drain hole. Detailed Implementation
[0038] 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.
[0039] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a trench excavation construction safety protection device, comprising a load-bearing shell 1, a rotating wheel 2 rotatably connected inside the load-bearing shell 1, a threaded rod 3 threadedly connected inside the rotating wheel 2, the outer wall of the threaded rod 3 threadedly connected to the inside of the load-bearing shell 1, a connecting column 4 fixedly connected to the outer wall of the threaded rod 3, the outer wall of the connecting column 4 slidably connected to the inner wall of the load-bearing shell 1, a limiting block 5 fixedly connected to the left outer wall of the load-bearing shell 1, the outer wall of the limiting block 5 fixedly connected to the right outer wall of the connecting column 4, a protective plate 6 slidably connected to the outer wall of the limiting block 5, a limiting groove 7 formed inside the protective plate 6, the outer wall of the limiting block 5 slidably connected to the inner wall of the limiting groove 7, a support frame 8 slidably connected to the outer wall of the protective plate 6, a pressure sensor 9 disposed inside the support frame 8, a warning light 10 electrically connected to the output end of the pressure sensor 9, the outer wall of the warning light 10 fixedly connected to the inside of the support frame 8, and a filter assembly 11 disposed on the outer wall of the protective plate 6.
[0040] Specifically, the load-bearing shell 1 supports the rotating wheel 2. The rotating wheel 2 does not detach from the load-bearing shell 1 when rotating inside it. The rotation of the rotating wheel 2 causes the threaded rod 3 to move inside the load-bearing shell 1 via the threaded action. The movement of the threaded rod 3 causes the connecting column 4 to move synchronously inside the load-bearing shell 1. By moving the connecting column 4 through the threaded rod 3, the protective plate 6 can adapt to grooves of different widths, allowing it to protect workers within these grooves and improving its flexibility. The left side of the load-bearing shell 1 fixes the limiting block 5, and the right side of the connecting column 4 also fixes the limiting block 5. The protective plate 6 supports the limiting block 5, which consists of two overlapping cylindrical cylinders of different sizes. The outer shape of the groove 7 allows the limiting block 5 to slide laterally, while the inner shape of the limiting groove 7 allows the lateral cylindrical shape of the limiting block 5 to rotate. When the limiting block 5 rotates 90 degrees, it will be stuck inside the protective plate 6, thus fixing the limiting block 5 inside the protective plate 6. A rubber pad is provided at the position where the support frame 8 is in contact with the outer wall of the protective plate 6. The rubber pad increases the friction between the support frame 8 and the protective plate 6, keeping the support frame 8 stable on the outer wall of the protective plate 6. The soil pressure can be sensed and monitored by the pressure sensor 9. When the soil pressure exceeds the set value, a signal will be promptly fed back to the warning light 10. The warning light 10 can provide an alarm reminder for the received signal, allowing the staff to know the status of the trench in time and improving safety.
[0041] Reference Figure 1 and Figure 2The filter assembly 11 includes a support plate 1101, the outer wall of the support plate 1101 is slidably connected to the outer wall of the protective plate 6, a filter screen 1102 is fixedly connected inside the support plate 1101, and a support leg 1103 is fixedly connected to the outer wall of the support plate 1101, with the outer wall of the support leg 1103 slidably connected to the inside of the protective plate 6.
[0042] Specifically, the filter screen 1102 can be fixedly supported by the support plate 1101, the support plate 1101 can be fixed by the support leg 1103, and the filter screen 1102 can filter the mud and sand to avoid piping.
[0043] Reference Figure 1 and Figure 2 The protective plate 6 has a drainage hole 18 inside, and the drainage hole 18 is located on the rear side of the filter screen 1102;
[0044] Specifically, drainage holes 18 are opened inside the lower side of the protective plate 6, which can directly integrate the drainage function into the interior of the protective plate 6 without the need for additional pipes. This solves the pain points of traditional separate drainage systems. The drainage holes 18 are distributed in an array, which can ensure that groundwater can be discharged in time, avoid soil instability caused by hydrostatic pressure, and reduce the collapse rate. At the same time, the filtration effect of the filter screen 1102 can protect the drainage holes 18, prevent silt from clogging the drainage holes 18, and ensure the drainage effect.
[0045] Reference Figure 1 and Figure 4 The protective plate 6 has a fixed column 12 slidably connected inside, and a clamping block 13 is fixedly connected to the outer wall of the fixed column 12. The outer wall of the clamping block 13 is slidably connected to the outer wall of the support leg 1103. A spring 14 is sleeved on the outer wall of the fixed column 12. One end of the spring 14 is fixedly connected to the outer wall of the clamping block 13, and the other end of the spring 14 is fixedly connected to the inside of the protective plate 6. A support column 15 is fixedly connected inside the clamping block 13. A pulley 16 is rotatably connected to the outer wall of the support column 15, and the outer wall of the pulley 16 is slidably connected to the inside of the protective plate 6.
[0046] Specifically, the protective plate 6 supports and prevents the fixed column 12 from shifting, allowing the fixed column 12 to move only back and forth inside the protective plate 6. The fixed column 12 fixes the clamping block 13, and its movement causes the clamping block 13 to move simultaneously. The clamping block 13 fixes the support column 15, which in turn supports the pulley 16. The protective plate 6 also supports the pulley 16, allowing it to slide along the inner wall of the protective plate 6. This sliding of the pulley 16 helps the clamping block 13 move when compressed. The upper outer wall of the clamping block 13 is inclined, as is the outer wall of the right-side protruding ring of the support leg 1103. When the support leg 1103 moves inside the protective plate 6, it is supported by the inclined surface of the protruding ring. The surface of the clamping block 13 is in contact with the inclined surface of the clamping block 13 and is pressed against the clamping block 13. When the clamping block 13 is pressed, it will press against the spring 14. The fixing column 12 supports the spring 14. After the clamping block 13 is released from the pressure of the right convex ring of the support leg 1103, the spring 14 will use the elastic force accumulated during the compression to make the clamping block 13 move back to its original position. When the clamping block 13 returns to its original position, it will be stuck in the middle of the convex rings on the left and right sides of the support leg 1103, restricting the support leg 1103 and fixing the support leg 1103 inside the protective plate 6. This further allows the filter screen 1102 to be quickly installed on the outer wall of the protective plate 6. When the fixing column 12 is pulled, the clamping block 13 will move, releasing the restriction of the clamping block 13 on the support leg 1103, allowing the support leg 1103 to be taken out.
[0047] Reference Figure 4 The protective plate 6 is fixedly connected to a support block 17, and the outer wall of the support leg 1103 is slidably connected to the outer wall of the support block 17; the support block 17 is located directly in front of the clamping block 13;
[0048] Specifically, the outer wall of the support block 17 has two inclined surfaces, a large inclined surface and a small inclined surface. The small inclined surface is in the same direction as the inclined surface of the clamping block 13. When the support leg 1103 moves, it will slide on the outer wall of the support block 17. When the outer wall of the clamping block 13 is stuck in the middle of the protruding ring of the support leg 1103, the intersection of the large and small inclined surfaces of the support block 17 will be stuck in the middle of the protruding ring. After the clamping block 13 releases the restriction on the support leg 1103, the support leg 1103 can be taken out. At this time, the right inclined surface of the support leg 1103 will slide outward on the outer wall of the small inclined surface of the support block 17, so that the removal of the support leg 1103 will not be restricted, and further achieve the effect of quick disassembly.
[0049] Working principle: When the device is needed, the limiting block 5 on the outer wall of the load-bearing shell 1 is placed into the inner wall of the left limiting groove 7. Then, the rotating wheel 2 is rotated according to the width of the trench excavation. When the rotating wheel 2 rotates, it will drive the threaded rod 3 to rotate through the thread action. When the threaded rod 3 rotates through the thread action, it will move inside the load-bearing shell 1, and at the same time, it will drive the connecting column 4 to move inside the load-bearing shell 1. When the connecting column 4 moves, the limiting block 5 on the outer wall of the connecting column 4 is aligned with the right limiting groove 7. Then, the movement of the connecting column 4 will... Place the limiting block 5 on the outer wall of the connecting column 4 into the inner wall of the right limiting groove 7. Then rotate the load-bearing shell 1 ninety degrees. The limiting blocks 5 on both sides will rotate on the inner wall of the limiting groove 7 and then be stuck inside the protective plate 6. By limiting the limiting block 5 through the limiting groove 7, the limiting block 5 can be fixed inside the protective plate 6. Then, the support frame 8 is stuck on the outer wall of the protective plate 6. The pressure sensor 9 inside the support frame 8 can detect the soil pressure in real time. The warning light 10 can provide feedback on the detection results to achieve the warning effect.
[0050] After the protective plate 6 is assembled, the support leg 1103 is placed inside the protective plate 6. When the support leg 1103 slides, it will squeeze the clamping block 13. When the clamping block 13 is squeezed, it will drive the pulley 16 to slide inside the protective plate 6 through the support column 15. At the same time, it will also cause the fixing column 12 to move outward inside the protective plate 6. When the clamping block 13 moves, it will squeeze the spring 14. The right outer wall of the drain hole 18 matches the shape of the outer wall of the clamping block 13. After the right outer wall of the support leg 1103 moves and the outer wall of the clamping block 13 is misaligned, the clamping block 13 will be squeezed by the elastic force of the spring 14 on the protective plate 6. The filter screen moves inward and gets stuck in the groove of the support leg 1103, restricting the drainage hole 18 and fixing the support leg 1103 inside the pulley 16. This allows the filter screen 1102 to filter mud and sand on the outer wall of the protective plate 6, preventing the drainage hole 18 from being blocked by mud and sand. This device can not only adjust the distance between the protective plates 6 according to the width of the trench excavation, better adapt to different width requirements, improve flexibility and reduce costs, but also allow the filter screen 1102 to be quickly disassembled and replaced, preventing the drainage hole 18 from being blocked by mud and sand due to damage during disassembly of the filter screen 1102.
[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. A safety protection device for trench excavation construction, comprising a load-bearing shell (1), characterized in that: The load-bearing shell (1) is rotatably connected to a rotating wheel (2), and the rotating wheel (2) is threadedly connected to a threaded rod (3). The outer wall of the threaded rod (3) is threadedly connected to the inside of the load-bearing shell (1). The outer wall of the threaded rod (3) is fixedly connected to a connecting column (4), and the outer wall of the connecting column (4) is slidably connected to the inner wall of the load-bearing shell (1). A limit block (5) is fixedly connected to the left outer wall of the load-bearing shell (1), and the outer wall of the limit block (5) is fixedly connected to the right outer wall of the connecting column (4). The outer wall of the protective plate (6) is slidably connected to a protective plate (6). A limiting groove (7) is opened inside the protective plate (6). The outer wall of the limiting block (5) is slidably connected to the inner wall of the limiting groove (7). The outer wall of the protective plate (6) is slidably connected to a support frame (8). A pressure sensor (9) is provided inside the support frame (8). The output end of the pressure sensor (9) is electrically connected to a warning light (10). The outer wall of the warning light (10) is fixedly connected to the inside of the support frame (8). A filter assembly (11) is provided on the outer wall of the protective plate (6).
2. The trench excavation construction safety protection device according to claim 1, characterized in that: The filter assembly (11) includes a support plate (1101), the outer wall of which is slidably connected to the outer wall of the protective plate (6), a filter screen (1102) is fixedly connected inside the support plate (1101), and a support leg (1103) is fixedly connected to the outer wall of the support plate (1101), the outer wall of which is slidably connected to the inside of the protective plate (6).
3. The trench excavation construction safety protection device according to claim 1, characterized in that: The protective plate (6) has a drainage hole (18) inside, which is located on the rear side of the filter screen (1102).
4. The trench excavation construction safety protection device according to claim 1, characterized in that: The protective plate (6) is slidably connected to a fixed column (12), and the outer wall of the fixed column (12) is fixedly connected to a clamping block (13). The outer wall of the clamping block (13) is slidably connected to the outer wall of the support leg (1103).
5. The trench excavation construction safety protection device according to claim 4, characterized in that: A spring (14) is fitted on the outer wall of the fixed column (12). One end of the spring (14) is fixedly connected to the outer wall of the clamping block (13), and the other end of the spring (14) is fixedly connected to the inside of the protective plate (6).
6. The trench excavation construction safety protection device according to claim 4, characterized in that: The clamping block (13) is fixedly connected to a support column (15), and the outer wall of the support column (15) is rotatably connected to a pulley (16), and the outer wall of the pulley (16) is slidably connected to the inside of the protective plate (6).
7. The trench excavation construction safety protection device according to claim 2, characterized in that: The protective plate (6) is fixedly connected to a support block (17), and the outer wall of the support leg (1103) is slidably connected to the outer wall of the support block (17).
8. The trench excavation construction safety protection device according to claim 7, characterized in that: The support block (17) is located directly in front of the clamping block (13).