Safety protection device for bridge engineering construction
By installing hollow cylinders and safety belt buckle connection components in the bridge construction guardrails, the problem of cumbersome operation of existing guardrail buckles has been solved, achieving fast and stable safety belt buckle installation and improving construction safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ROAD BRIDGE & BRIDGE ENG CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-03
AI Technical Summary
The existing bridge edge protection railings have cumbersome procedures for attaching safety belts, which are inconvenient in emergency situations and increase the safety risks for construction workers.
A hollow cylinder is installed in the middle or upper part of the guardrail frame, and equipped with a safety belt buckle connection assembly, including a limit block and a connecting ring. Construction workers can directly connect the safety belt buckle to the connecting ring, simplifying the operation process and improving the buckle speed in emergency situations.
The procedure for attaching safety belts has been simplified, improving construction efficiency, ensuring quick attachment in emergencies, and enhancing the safety and stability of construction workers.
Smart Images

Figure CN224451396U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge construction protection, specifically a bridge construction protection device. Background Technology
[0002] During bridge construction, ensuring the safety of construction workers is paramount. Bridge edge guardrails, as key facilities for ensuring worker safety, are typically installed along the edges of bridge decks. Their standard specifications are 1.2 meters high and 2.0 meters long, mainly composed of a guardrail frame and protective netting, and are installed along the bridge deck edges with fixing screws. They play a crucial role in preventing accidental falls. When working near bridge edges, whether operating inside or outside the guardrail, workers wear safety harnesses to ensure personal safety. However, existing bridge edge guardrails have significant limitations. Due to deficiencies in the guardrail's structural design, when using safety harnesses, workers must either go around the guardrail and connect it to other facilities. This inevitably requires extending the safety rope length, making the process cumbersome and inconvenient for quick hooking in emergencies (potentially delaying protection in emergencies, thus increasing worker safety risks). Therefore, the existing bridge edge guardrail structure has deficiencies in facilitating the hooking of safety harnesses and urgently needs improvement and optimization. Utility Model Content
[0003] Therefore, to address the aforementioned shortcomings, this utility model provides a safety protection device for bridge construction. By installing a hollow cylinder in the middle or upper part of the guardrail frame and equipping it with a safety belt buckle connection component, construction workers can directly connect the safety belt buckle to the connecting ring without having to go around the guardrail to connect other facilities. This greatly simplifies the operation process of the safety belt buckle, avoids the inconvenience caused by extending the length of the safety rope, improves construction efficiency, and allows for quick buckling in emergency situations, effectively ensuring the personal safety of construction workers.
[0004] This utility model is implemented as follows: a safety protection device for bridge construction is constructed, characterized in that: it comprises a guardrail frame with a protective net, a hollow cylinder welded and fixed at the middle or upper middle position of the guardrail frame, transverse grooves on the front and rear sides of the hollow cylinder, and a safety belt buckle connecting assembly provided in the hollow cylinder; the safety belt buckle connecting assembly comprises a limiting block corresponding to the hollow cylinder, a safety belt buckle connecting ring located in the hollow cylinder, and a connecting block connected to the limiting block and whose outer end extends out of the hollow cylinder and is fixed to the safety belt buckle connecting ring.
[0005] According to the present invention, a bridge construction protection device is characterized in that: the two ends of the connecting block are respectively welded and fixed to the connecting ring and the limiting block, the connecting block is located at the transverse groove, and the whole formed therein can slide in the hollow cylinder.
[0006] According to the present invention, a safety protection device for bridge construction is characterized in that the limiting block is an arc-shaped limiting block that fits against the inner wall of a hollow cylinder, so as to better obtain force and limit.
[0007] According to the present invention, a safety protection device for bridge construction is characterized in that the bottom of the guardrail frame is a triangular screw fixing end.
[0008] According to the present invention, a safety protection device for bridge construction is characterized in that the hollow cylinder is formed by welding two semi-circular cylinders, one above the other.
[0009] This utility model has the following advantages:
[0010] Firstly, by setting a hollow cylinder in the middle or upper part of the guardrail frame and equipping it with a safety belt buckle connection component, construction workers can directly connect the safety belt buckle to the connecting ring without having to go around the guardrail to connect other facilities. This greatly simplifies the operation process of the safety belt buckle, avoids the inconvenience caused by extending the length of the safety rope, improves construction efficiency, and can quickly complete the buckle in an emergency, effectively protecting the personal safety of construction workers.
[0011] Secondly, the limiting block adopts an arc-shaped design that fits against the inner wall of the hollow cylinder. When the seat belt is under force, it can better disperse the force, enhance the limiting effect, make the seat belt buckle connection assembly more stable and reliable during use, and further improve the safety protection performance.
[0012] Thirdly, the triangular screw fixing end at the bottom of the guardrail frame increases the contact area with the bridge deck compared to the traditional fixing method, providing a more stable fixing effect, ensuring that the protective device is not easy to loosen during construction, and ensuring the overall safety of the protective device.
[0013] Fourth, the hollow cylinder is welded together from two semi-circular cylinders. This structural design facilitates assembly when installing the safety belt buckle connection components, reducing production and installation difficulties. It also makes it easier to maintain and replace the components later, improving the practicality and service life of the protective device. Attached Figure Description
[0014] Figure 1 This is a schematic diagram illustrating the implementation of this application;
[0015] Figure 2 This is a schematic diagram of the connection assembly between the hollow cylinder and the seat belt buckle in this application;
[0016] Figure 3 This is a schematic diagram of the seat belt buckle connection assembly in this application. Detailed Implementation
[0017] The following will be combined with the appendix Figures 1-3 This utility model will be described in detail, and the technical solutions in the embodiments of this utility model will be clearly and completely described. 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 protection scope of this utility model.
[0018] This utility model provides an improved safety protection device for bridge construction, such as... Figures 1-3 As shown, it can be implemented as follows; its components include a guardrail frame 1 with a protective net, a hollow cylinder 2 welded and fixed at the middle or upper part of the guardrail frame 1, transverse grooves 3 on the front and rear sides of the hollow cylinder 2, and a safety belt buckle connecting assembly 4 (the number can be multiple) provided in the hollow cylinder 2. Figures 2-3 As shown, the seat belt buckle connecting assembly 4 comprises a limiting block 4-1 corresponding to the hollow cylinder 2, a seat belt buckle connecting ring 4-2 located in the hollow cylinder 2, and a connecting block 4-3 connected to the limiting block 4-1 and whose outer end extends out of the hollow cylinder 2 and is fixed to the seat belt buckle connecting ring 4-2.
[0019] like Figures 1-3 As shown, in the implementation of this application, the two ends of the connecting block 4-3 are welded and fixed to the connecting ring 4-2 and the limiting block 4-1 respectively. The connecting block 4-3 corresponds to the transverse groove 3, and the whole formed by them can slide in the hollow cylinder 2.
[0020] like Figures 1-3 As shown, in the implementation of this application, the limiting block 4-1 is an arc-shaped limiting block that fits against the inner wall of the hollow cylinder 2, so as to better obtain force and limit.
[0021] like Figures 1-3 As shown, in the implementation of this application, the bottom of the guardrail frame 1 is a triangular screw fixing end.
[0022] like Figures 1-3 As shown, in the implementation of this application, the hollow cylinder 2 is formed by welding two semi-circular cylinders 2-1, one above the other.
[0023] The implementation process of the bridge construction protection device described in this application is explained below:
[0024] Fence frame fabrication: Fabricate a fence frame 1 with a protective net, and process its bottom into a triangular screw fixing end to provide a structural foundation for subsequent installation and fixing.
[0025] Seatbelt buckle connection assembly fabrication: A curved limiting block 4-1 is machined to fit the inner wall of the hollow cylinder 2. A seatbelt buckle connecting ring 4-2 is manufactured, and a connecting block 4-3 is machined. The two ends of the connecting block 4-3 are welded and fixed to the connecting ring 4-2 and the limiting block 4-1 respectively, ensuring a firm connection to form the seatbelt buckle connection assembly 4. Hollow cylinder fabrication: Two semi-circular cylinders 2-1 are manufactured, one upper and one lower, with transverse grooves 3 cut on corresponding positions on the front and rear sides of each semi-circular cylinder 2-1. The two semi-circular cylinders 2-1 are welded and assembled into the hollow cylinder 2. During welding, it is necessary to ensure the cylinder structure is firm and the transverse grooves 3 are accurately positioned so that the seatbelt buckle connection assembly 4 can be installed inside during welding. The fabricated seatbelt buckle connection assembly 4 is then installed into the hollow cylinder 2, ensuring that the connecting block 4-3 corresponds to the transverse groove 3 and that the seatbelt buckle connection assembly 4 can slide freely within the hollow cylinder 2.
[0026] Weld and fix the assembled hollow cylinder 2 so that it corresponds to the middle or upper middle position of the guardrail frame 1, while ensuring that the hollow cylinder 2 and the guardrail frame 1 are firmly connected.
[0027] On-site installation: During bridge construction, the assembled protective devices are transported to the construction site. Using the triangular screw fixing ends at the bottom of guardrail frame 1, the protective devices are fixed to the edge of the bridge deck using screws. Because the triangular screw fixing ends increase the contact area with the bridge deck, tightening the screws ensures the protective devices are securely installed on the bridge deck, guaranteeing stability and reliability during construction.
[0028] Usage: When construction workers are working near the edge of a bridge, whether operating inside or outside the guardrail, they can slide the safety belt buckle connecting assembly 4 to adjust the position of the safety belt buckle connecting ring 4-2 according to actual needs. Then, the safety belt buckle connector 5 is directly connected to the connecting ring 4-2, eliminating the need to bypass the guardrail and connect to other facilities, thus simplifying the safety belt buckle operation. When the safety belt is under stress, the arc-shaped limiting block 4-1 fits against the inner wall of the hollow cylinder 2, effectively dispersing the force, enhancing the limiting effect, and ensuring the personal safety of construction workers.
[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A safety protection device for bridge construction, characterized in that; Its components include a guardrail frame with a protective net, a hollow cylinder welded and fixed in the middle or upper middle position of the guardrail frame, transverse grooves on the front and rear sides of the hollow cylinder, and a seat belt buckle connecting assembly installed in the hollow cylinder; the seat belt buckle connecting assembly includes a limiting block corresponding to the hollow cylinder, a seat belt buckle connecting ring located in the hollow cylinder, and a connecting block connected to the limiting block and whose outer end extends out of the hollow cylinder and is fixed to the seat belt buckle connecting ring.
2. The safety protection device for bridge engineering construction according to claim 1, characterized in that; The two ends of the connecting block are welded and fixed to the connecting ring and the limiting block, respectively. The connecting block corresponds to the transverse groove, and the whole formed by them can slide in the hollow cylinder.
3. The safety protection device for bridge engineering construction according to claim 1, characterized in that The limiting block is an arc-shaped limiting block that fits into the inner wall of the hollow cylinder, so as to better obtain force and limit.
4. The safety protection device for bridge engineering construction of claim 1, wherein The bottom of the guardrail frame has triangular screw fixing ends.
5. The safety protection device for bridge construction according to claim 1, characterized in that... The hollow cylinder is made by welding two semi-circular cylinders together.