Safety belt tying and hanging device for high-place operation
By designing a safety belt fastening device that includes a steel ring, a fastening assembly, and cylindrical roller bearings, the safety hazard caused by removing safety belt fastening points during fireproof coating construction was solved, thus ensuring safety and continuity of work at heights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR EIGHTH BUREAU TIANJIN CONSTR ENG CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-15
AI Technical Summary
In construction, the application of fire-retardant coatings requires the removal of safety belt anchor points, which makes it impossible to effectively guarantee safety when working at heights. There is a lack of effective alternatives, which increases the risk of construction safety hazards.
Design a safety belt fastening device for working at heights, including a steel ring, a fastening assembly, a cylindrical roller bearing, a screw and a nut. The cylindrical roller bearing slides on the lower flange plate of the steel beam, allowing for flexible movement of the safety belt fastening position and avoiding welding damage to the main structure.
It provides a solution that ensures the safety of construction personnel, meets the needs of different work scenarios, and improves the stability and service life of the equipment without affecting the application of fire-retardant coatings.
Smart Images

Figure CN224244473U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of safety belt fastening equipment in steel frame structures, and in particular to a safety belt fastening device for working at heights. Background Technology
[0002] In existing technologies, in the construction field, especially during the decoration and finishing phase of steel frame structures, construction workers typically rely on safety belt anchor points for working at heights to ensure personal safety. However, when applying fire-retardant coatings, the existing safety belt anchor points need to be removed, making it impossible to effectively guarantee safety during work at heights. Currently, there is a lack of effective alternatives in the industry to solve this problem, thus increasing safety hazards during construction. Therefore, there is an urgent need for a new type of safety belt anchoring device or method that can provide reliable safety for work at heights without interfering with the application of fire-retardant coatings. Utility Model Content
[0003] The purpose of this utility model is to provide a safety belt fastening device for high-altitude operations, which aims to effectively solve the problem of safety belt fastening during high-altitude operations in the decoration and renovation stage, ensure the safety of construction personnel, and at the same time not affect the normal progress of fireproof coating construction and other related procedures.
[0004] To achieve the above objectives, this utility model provides a safety belt fastening device for working at heights, comprising a steel ring, a fastening assembly, a cylindrical roller bearing, a screw, and a nut, wherein:
[0005] The mounting assembly includes an upper mounting plate and a lower mounting plate, which are mounted on the reinforcing ring through a groove fit; the cylindrical roller bearings are located at both ends of the reinforcing ring for sliding and moving on the lower flange plate of the steel beam; the nut is welded to one end of the reinforcing ring for fixing the screw; the screw passes through the nut at one end of the reinforcing ring and is installed and removed by the nut tightness adjustment device.
[0006] Preferably, the reinforcing bar ring is formed by bending reinforcing bars, and its size is determined according to the width of the lower flange of the steel beam to adapt to steel beam structures of different specifications.
[0007] Preferably, the upper mounting plate has grooves on both sides, the structure of the lower mounting plate matches the grooves, and the bottom of the upper mounting plate is integrally provided with a lifting ring.
[0008] Preferably, the upper mounting plate has a threaded hole in the groove, and the lower mounting plate has a threaded seat at the position corresponding to the threaded hole. The threaded hole and the threaded seat have the same inner diameter, and there are two threaded holes and two threaded seats.
[0009] Preferably, the upper mounting plate has an arched groove inside, and the internal dimensions of the arched groove match the dimensions of the reinforcing bar ring.
[0010] Preferably, one end of the screw is welded with a cylindrical roller bearing, and the other end is fixed by a nut, which is used to adjust the installation status of the device and ensure the convenience of installation and disassembly.
[0011] Preferably, the cylindrical roller bearing is mounted on the lower flange of the steel beam, and its outer diameter is slightly smaller than the width of the lower flange of the steel beam, thereby reducing the friction during sliding and allowing the device to slide freely, thus flexibly adjusting the fastening position of the seat belt.
[0012] Preferably, a cylindrical roller bearing is welded to the other end of the reinforcing ring. By evenly distributing cylindrical roller bearings at both ends of the reinforcing ring, the force on the lower flange of the steel beam is more evenly distributed, thereby significantly improving stability and service life.
[0013] Before installation, the screw is tightened to the far left to facilitate the device passing smoothly through the lower flange of the steel beam; after installation, it is tightened to the far right to ensure that the device is firmly locked onto the lower flange of the steel beam.
[0014] Therefore, this utility model adopts the above-mentioned safety belt fastening device for working at heights, which does not require welding to the steel beam, does not damage the main structure, and effectively protects the anti-corrosion paint and fireproof coating of the steel beam.
[0015] Meanwhile, the safety belt fastening position can be flexibly moved by the cylindrical roller bearing sliding on the lower flange plate of the steel beam, so as to meet the needs of different working scenarios.
[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0017] Figure 1 This is a cross-sectional view of an embodiment of a safety belt fastening device for working at heights according to this utility model;
[0018] Figure 2 This is a cross-sectional view of an embodiment of the safety belt fastening device for working at heights after installation.
[0019] Figure 3 This is a schematic diagram of the structure of the fastening component of an embodiment of a safety belt fastening device for working at heights according to this utility model.
[0020] Figure Labels
[0021] 1. Screw; 2. Nut; 3. Cylindrical roller bearing; 4. Reinforcing ring; 5. Upper mounting plate; 6. Lifting ring; 7. Lower flange plate of steel beam; 8. Floor slab; 9. Lower mounting plate; 10. Threaded hole; 11. Threaded seat; 12. Groove; 13. Arched groove. Detailed Implementation
[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0023] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0024] Example 1
[0025] like Figure 1 As shown, this utility model provides a safety belt fastening device for working at heights, including a steel ring 4, a fastening assembly, a cylindrical roller bearing 3, a screw 1, and a nut 2, wherein:
[0026] The reinforcing bar ring 4 is formed by bending a 20mm diameter steel bar, and its size is determined according to the width of the lower flange plate 7 of the steel beam. For example, if the width of the lower flange plate 7 of the steel beam is 150mm, the inner diameter of the reinforcing bar ring 4 is set to 160mm to ensure that the device can pass through and hold the steel beam smoothly.
[0027] A nut 2 is welded to one end of the reinforcing ring 4 to fix the screw rod 1. The screw rod 1 passes through the nut 2 at one end of the reinforcing ring 4, and the installation and disassembly status of the device is adjusted by the tightness of the nut 2. Before installation, the screw rod 1 is tightened to the far left to facilitate the device passing smoothly through the lower flange plate 7 of the steel beam; after installation, it is tightened to the far right to ensure that the device is firmly locked onto the lower flange plate 7 of the steel beam.
[0028] A cylindrical roller bearing 3 is also welded to the other end of the reinforcing ring 4 to adjust the installation status of the device and ensure ease of installation and disassembly. By evenly distributing the cylindrical roller bearings 3 at both ends of the reinforcing ring 4, the device is subjected to more uniform force on the lower flange plate 7 of the steel beam, thereby significantly improving stability and service life.
[0029] like Figure 2 As shown, the cylindrical roller bearing 3 is slidably mounted on the lower flange plate 7 of the steel beam. Its outer diameter is slightly smaller than the width of the lower flange plate 7, thereby reducing friction during sliding and allowing the device to slide freely, thus flexibly adjusting the fastening position of the safety belt. The lower flange plate 7 of the steel beam is fixedly mounted below the floor slab 8 via the steel beam.
[0030] like Figure 3 As shown, the suspension assembly includes an upper mounting plate 5 and a lower mounting plate 9, which are fitted onto the reinforcing ring 4 via a groove 12. The upper mounting plate 5 has an arched groove 13 inside, the internal dimensions of which match the dimensions of the reinforcing ring 4, ensuring the reinforcing ring 4 can be securely embedded within it. A lifting ring 6 is integrally provided at the bottom of the upper mounting plate 5 for attaching the safety belt. The lifting ring 6 is also designed to withstand higher loads, ensuring that all the suspension force is applied to the reinforcing ring 4.
[0031] The upper mounting plate 5 has grooves 12 on both sides, and the protruding structure of the lower mounting plate 9 matches the grooves 12. The upper mounting plate 5 has threaded holes 10 in the grooves 12, and the lower mounting plate 9 has threaded seats 11 at the corresponding positions of the threaded holes 10. The inner diameters of the threaded holes 10 and the threaded seats 11 are the same, and there are two of each. Screws are screwed into the threaded holes 10 and the threaded seats 11 to fix the hanging assembly. At the same time, the hanging assembly is designed to be detachable for easy replacement of the lifting ring 6.
[0032] Installation process:
[0033] Align the reinforcing bar ring 4 with the lower flange plate 7 of the steel beam, and move the device to the designated position by the sliding function of the cylindrical roller bearing 3.
[0034] Tighten screw 1 to the far left to ensure that the device can pass smoothly through the lower flange plate 7 of the steel beam.
[0035] After completing the passing action, screw 1 is turned to the far right to make the device firmly locked onto the lower flange plate 7 of the steel beam.
[0036] Disassembly process:
[0037] Tighten screw 1 from the rightmost side back to the leftmost side to loosen the lower flange plate 7 of the steel beam.
[0038] The device is removed from the steel beam by using the sliding function of the cylindrical roller bearing 3.
[0039] Therefore, this utility model adopts the above-mentioned safety belt fastening device for high-altitude operations, which has a simple structure and aims to effectively solve the problem of safety belt fastening during high-altitude operations in the decoration and renovation stage, ensuring the safety of construction personnel, while not affecting the normal progress of fireproof coating construction and other related processes.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.
Claims
1. A safety belt fastening device for working at heights, characterized in that: Includes reinforcing rings, tying components, cylindrical roller bearings, screws, and nuts, among which: The mounting assembly includes an upper mounting plate and a lower mounting plate, which are mounted on the reinforcing ring through a groove fit; the cylindrical roller bearings are located at both ends of the reinforcing ring for sliding and moving on the lower flange plate of the steel beam; the nut is welded to one end of the reinforcing ring for fixing the screw; the screw passes through the nut at one end of the reinforcing ring and is installed and removed by the nut tightness adjustment device.
2. The safety belt fastening device for working at heights according to claim 1, characterized in that: The reinforcing bar ring is formed by bending reinforcing bars, and its size is determined according to the width of the lower flange of the steel beam to adapt to steel beam structures of different specifications.
3. The safety belt fastening device for working at heights according to claim 2, characterized in that: The upper mounting plate has grooves on both sides, the structure of the lower mounting plate matches the grooves, and the bottom of the upper mounting plate is integrally provided with a lifting ring.
4. A safety belt fastening device for working at heights according to claim 3, characterized in that: The upper mounting plate has a threaded hole in the groove, and the lower mounting plate has a threaded seat at the position corresponding to the threaded hole. The inner diameter of the threaded hole and the threaded seat are the same, and there are two threaded holes and two threaded seats.
5. A safety belt fastening device for working at heights according to claim 4, characterized in that: The upper mounting plate has an arched groove inside, and the internal dimensions of the arched groove match the dimensions of the reinforcing bar ring.
6. A safety belt fastening device for working at heights according to claim 5, characterized in that: One end of the screw is welded with a cylindrical roller bearing, and the other end is fixed by a nut, which is used to adjust the installation status of the device.
7. A safety belt fastening device for working at heights according to claim 6, characterized in that: The cylindrical roller bearing is mounted on the lower flange of the steel beam, and its outer diameter is slightly smaller than the width of the lower flange of the steel beam.
8. A safety belt fastening device for working at heights according to claim 7, characterized in that: A cylindrical roller bearing is welded to the other end of the reinforcing ring.