Security and protection device for building engineering construction
By installing threaded rods and lifting plate extension components inside the support pillars to fix them to the ground, combined with a dustproof design, the problems of swaying of the protective netting and collapse of the hollow pillars are solved, improving the stability and portability of the protective netting.
Patent Information
- Application Number
- CN202520414805.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-11
AI Technical Summary
In existing construction safety devices, the central area of the protective netting is suspended above the ground, causing it to sway when impacted by external forces and transmit the force to the hollow column, resulting in swaying and collapse of the hollow column.
An extension assembly, including a threaded rod and a lifting plate, is installed inside the support column. It is fixed to the ground with bolts and combined with a dustproof component to prevent dust from entering and ensure the stability of the support column. The outside of the support column is equipped with a swivel and a buckle for easy angle adjustment and carrying.
The protective strength of the safety net has been improved, preventing swaying and collapse of the hollow columns, and making it more convenient to carry and install.
Smart Images

Figure CN223824747U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a security device for building construction. Background Technology
[0002] Building construction refers to the production activities during the implementation phase of an engineering project. It is the process of building various types of buildings, or the process of turning the lines on the design drawings into physical objects at a designated location. During the construction process, in order to isolate and protect the construction site, it is usually necessary to set up protective nets. How to improve the stability of the installation of protective nets and thus enhance safety is an urgent problem to be solved.
[0003] A search revealed that CN218092170U discloses a security device for construction engineering, comprising a base, a hollow column fixedly installed on the top of the base, an entrance / exit on one side of the hollow column, a rotating shaft movably installed inside the hollow column, a mesh roller fixedly sleeved on the rotating shaft, a protective net wound on the mesh roller, one side of the protective net being fixedly connected to the mesh roller, and the other side of the protective net extending to the outside of the hollow column through the entrance / exit. An installation strip is fixedly installed on the side of the protective net outside the hollow column, and coil springs are sleeved at both ends of the rotating shaft. This utility model solves the problems of existing security devices being mostly bulky and inconvenient to carry, slow to connect during installation, and prone to dust accumulation on the protective net after prolonged use, making cleaning difficult and affecting subsequent use.
[0004] The aforementioned safety device for construction engineering involves installing a retractable protective net inside a hollow column, and pulling one side of the protective net to another set of hollow columns according to the protection range, and fixing it with a pole.
[0005] The design flaw is that the protective netting is only connected to the hollow columns on the left and right sides, while the central area of the netting is suspended above the ground. Therefore, when the netting is subjected to external impact, it will shake and the force will be directly transmitted to the two sets of hollow columns, causing the netting to shake and the hollow columns to collapse after long-term stress. Utility Model Content
[0006] This utility model proposes a safety device for construction engineering, which solves the problem that in the prior art, the central area of the protective net is suspended above the ground as a whole. Therefore, when the protective net is subjected to external impact, it will shake and directly transmit the force to the two sets of hollow columns, resulting in the shaking of the protective net and the collapse of the hollow columns after long-term stress.
[0007] The technical solution of this utility model is as follows: A safety device for construction engineering includes a protective component. The protective component includes a support column and a protective net installed between the support columns to provide protection. A downward extension component is installed inside the support column. The downward extension component includes a threaded rod that can rotate inside the support column. A lifting plate that can move downward synchronously with the rotation of the threaded rod is installed outside the threaded rod. Bolts for fixing to the ground are pre-set around the lifting plate. A dustproof component that can prevent external dust and foreign objects from entering and causing the threaded rod to jam is also installed around the support column.
[0008] Preferably, the protective component further includes a rotating sleeve, which is rotatably connected to the outside of the support column, and the outside of each rotating sleeve is fixedly connected to the protective net.
[0009] Preferably, the protective component further includes a buckle that engages with the groove at the bottom of the support column.
[0010] Preferably, the lower extension assembly further includes a connecting sleeve, which is fixedly connected inside the support column, and an inner vertical seat is fixedly connected to the inner side of the connecting sleeve.
[0011] Preferably, the lower extension assembly further includes a screw rod, which is rotatably connected to the middle of the inner vertical seat. The bottom of the screw rod is fixedly connected to the threaded rod. The lower extension assembly also includes a screw handle, which is fixedly connected to the top of the screw rod.
[0012] Preferably, the lifting plate is threadedly connected to the threaded rod, and the lifting plate is symmetrically fixedly connected with sliding sleeves, the sliding sleeves corresponding to the bolt positions.
[0013] Preferably, the dustproof component includes an inner tube symmetrically and fixedly connected inside the support column, a sliding rod is slidably connected inside the inner tube, and a spring ring is sleeved on the outside of the inner tube.
[0014] Preferably, the dustproof component further includes a sliding cover disposed at the through slot on the side of the support column, the sliding cover being positioned corresponding to the handle, the bottom of the sliding cover being fixedly connected to the slide rod, and a dustproof strip being fixedly connected to the top of the sliding cover.
[0015] The beneficial effects of this utility model are as follows:
[0016] This utility model features a downward extension component inside the support column. When arranging the protective net according to the protection position, the threaded rod can be rotated within the inner vertical seat by turning the handle. This causes the lifting plate, which is threaded to the outside of the threaded rod, to move downward inside the support column until the bolt extends from the bottom of the support column. The bolt can then be fixed to the pre-drilled bolt holes in the ground. This design allows each support column to be fixed to the ground independently, thus ensuring the protective strength of the protective net between each support column. Similarly, when storing the support column and protective net, simply reverse the threaded rod until the lifting plate and bolt are restoring them inside the support column. Compared to the prior art, this design has the advantages of improving the protective strength of the protective net while also being convenient to carry and store. Attached Figure Description
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This is a front view of the overall device of this utility model;
[0019] Figure 2 This is a schematic diagram of the external structure of the support column of this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of the support column and the lower extension component of this utility model;
[0021] Figure 4 This is a schematic diagram of the dustproof component of this utility model;
[0022] In the diagram: 1. Protective component; 11. Support column; 12. Protective net; 13. Rotating sleeve; 14. Buckle; 2. Lower extension component; 21. Connecting sleeve; 22. Inner vertical seat; 23. Tightening rod; 231. Tightening handle; 232. Threaded rod; 24. Lifting plate; 241. Sliding sleeve; 25. Bolt; 3. Dustproof component; 31. Inner tube; 311. Sliding rod; 32. Spring ring; 33. Sliding cover; 331. Dustproof strip. Detailed Implementation
[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0024] Please see Figure 1 and 2 and Figure 3 and Figure 4This utility model provides a technical solution: a safety device for construction engineering, including a protective component 1, the protective component 1 including a support column 11 and a protective net 12 disposed between each support column 11 for protection, a downward extension component 2 is provided inside the support column 11, the downward extension component 2 includes a threaded rod 232 disposed inside the support column 11 that can rotate, a lifting plate 24 disposed outside the threaded rod 232 that can move downward synchronously with the rotation of the threaded rod 232, bolts 25 for fixing to the ground are pre-set around the lifting plate 24, and a dustproof component 3 is also provided around the support column 11 to prevent external dust and foreign objects from entering and causing the threaded rod 232 to jam;
[0025] This design solves the problem in the existing technology where the central area of the protective net is suspended above the ground. Therefore, when the protective net is subjected to external impact, it will shake and directly transmit the force to the two sets of hollow columns, resulting in the protective net shaking and the hollow columns collapsing after long-term stress.
[0026] Please see Figure 1 and Figure 2 The protective component 1 also includes a rotating sleeve 13, which is rotatably connected to the outside of the support column 11, and the outside of each rotating sleeve 13 is fixedly connected to the protective net 12.
[0027] By providing a rotating sleeve 13 on the outside of the support column 11 that is fixedly connected to the protective net 12, the protective net 12 can easily change its angle between the support columns 11 according to the arrangement range.
[0028] Please see Figure 2 The protective component 1 also includes a buckle 14, which is snapped into the bottom groove of the support column 11;
[0029] When the extension component 2 is in the transportation and storage stage, it can be snapped onto the bottom of the support column 11 to prevent external dust from entering.
[0030] Please see Figure 3 The lower extension component 2 also includes a connecting sleeve 21, which is fixedly connected inside the support column 11, and an inner vertical seat 22 is fixedly connected to the inner side of the connecting sleeve 21.
[0031] The inner vertical seat 22 can be fixed inside the support column 11 by means of the connecting sleeve 21.
[0032] Please see Figure 3 The lower extension assembly 2 also includes a screw rod 23, which is rotatably connected to the middle of the inner vertical seat 22. The bottom of the screw rod 23 is fixedly connected to the threaded rod 232. The lower extension assembly 2 also includes a screw handle 231, which is fixedly connected to the top of the screw rod 23.
[0033] By turning the handle 231, the lever 23 and the threaded rod 232 can be rotated at the inner vertical seat 22, thereby adjusting the position of the lifting plate 24 inside the support column 11.
[0034] Please see Figure 3 The lifting plate 24 is threadedly connected to the threaded rod 232. The lifting plate 24 is symmetrically fixedly connected with the sliding sleeve 241, and the sliding sleeve 241 corresponds to the position of the bolt 25.
[0035] Bolt 25 can be used to connect to the pre-drilled holes in the ground, thereby fixing the support column 11 to the ground.
[0036] Please see Figure 4 The dustproof component 3 includes an inner tube 31 symmetrically fixedly connected inside the support column 11, a slide rod 311 slidably connected inside the inner tube 31, and a spring ring 32 sleeved on the outside of the inner tube 31.
[0037] Please see Figure 4 The dustproof component 3 also includes a sliding cover 33 provided in the through slot on the side of the support column 11. The sliding cover 33 corresponds to the position of the handle 231. The bottom of the sliding cover 33 is fixedly connected to the slide rod 311, and a dustproof strip 331 is fixedly connected to the top of the sliding cover 33.
[0038] In its natural state, the extended spring ring 32 can push the sliding cover 33 against the slot on the side of the support column 11 next to the handle 231. This design can complete the closing of the sliding cover 33 and the dustproof strip 331 to the slot on the side of the support column 11, thereby preventing external dust from entering.
[0039] The working principle of this utility model:
[0040] When arranging the protected area using the support column 11 and the protective net 12, the buckle 14 at the bottom of the support column 11 can be removed first. Then, the sliding cover 33 is pressed down so that it retracts into the sliding groove inside the support column 11. Then, the handle 231 can be turned to rotate the screw rod 23 and the threaded rod 232. At this time, the lifting plate 24, which is threaded to the outside of the threaded rod 232, moves down inside the support column 11 until the bolt 25 extends from the bottom of the support column 11. The bolt 25 can be fixed to the pre-set screw hole in the ground. This design allows each support column 11 to be fixed to the ground independently, thereby ensuring the protective strength of the protective net 12 between each support column 11. Similarly, when storing the support column 11 and the protective net 12, simply reverse the screw rod 232 until the lifting plate 24 and the bolt 25 are stored back inside the support column 11.
[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A security device for construction work, comprising a protection assembly (1), characterized in that, The protective assembly (1) comprises a support column (11) and a protective net (12) arranged between the support columns (11) to play a protective role, and a lower extension assembly (2) is arranged in the support column (11), the lower extension assembly (2) comprises a threaded rod (232) arranged to be rotatable in the support column (11), a lifting disc (24) is arranged on the outer side of the threaded rod (232) and can be lowered synchronously with the threaded rod (232), the lifting disc (24) is provided with bolts (25) arranged to be fixed to the ground, and the support column (11) is further provided with a dustproof assembly (3) arranged to prevent foreign matters from entering the support column (11) to cause the threaded rod (232) to be stuck.
2. The security device for construction work according to claim 1, characterized in that, The protective assembly (1) further comprises a rotating sleeve (13) rotatably connected to the outer side of the support column (11), and the rotating sleeve (13) is fixedly connected to the protective net (12) on the outer side.
3. The security device for construction work according to claim 1, characterized in that, The protective assembly (1) further comprises a buckle (14) clamped at the bottom notch of the support column (11).
4. The security device for construction work according to claim 1, characterized in that, The lower extension assembly (2) further comprises a connecting sleeve (21) fixedly connected to the inner side of the support column (11), and the connecting sleeve (21) is fixedly connected with an inner vertical seat (22) on the inner side.
5. The security device for construction work according to claim 1, wherein The lower extension assembly (2) further comprises a twisting rod (23) rotatably connected to the middle part of the inner vertical seat (22), and the twisting rod (23) is fixedly connected to the threaded rod (232) at the bottom, and the lower extension assembly (2) further comprises a twisting handle (231) fixedly connected to the top of the twisting rod (23).
6. The security device for construction work according to claim 1, wherein The lifting disc (24) is threadedly connected to the threaded rod (232), and the lifting disc (24) is fixedly connected with a sliding sleeve (241) symmetrically around the lifting disc (24), and the sliding sleeve (241) corresponds to the position of the bolt (25).
7. The security device for construction work according to claim 1, wherein The dustproof assembly (3) comprises an inner tube (31) fixedly connected to the inner side of the support column (11), and a sliding rod (311) is slidably connected to the inner tube (31), and a spring ring (32) is arranged on the outer side of the inner tube (31).
8. The security device for construction work according to claim 1, wherein The dustproof assembly (3) further comprises a sliding cover (33) arranged in the through slot on the side of the support column (11), the sliding cover (33) corresponds to the position of the twisting handle (231), the sliding cover (33) is fixedly connected to the sliding rod (311) at the bottom, and the sliding cover (33) is fixedly connected with a dustproof strip (331) at the top.
Citation Information
Patent Citations
Security and protection device for building engineering construction
CN218092170U