A safety belt hanging point reinforcing anchor bolt for aerial work
By combining high-strength alloy steel anchor rods and expansion sleeves, the problems of loose safety belt attachment points and stress concentration are solved, achieving a more stable anchoring and anti-slip effect, and improving the safety and comfort of high-altitude operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI QINLEI CONSTR GRP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-14
AI Technical Summary
Existing safety belt anchor bolts are prone to loosening after long-term use or impact, and stress concentration leads to a decline in safety performance, making them unable to rotate flexibly and affecting the range of movement of workers.
The anchor body is made of high-strength alloy steel, combined with an expansion sleeve and a tapered locking head design. It features stress-dispersing bosses and anti-slip textures, and the connecting ring can rotate freely through bearings and a hinge structure, enhancing anchoring stability and anti-slip performance.
It improves the stability and anti-slip ability of anchorage, reduces the risk of loosening, disperses stress, avoids breakage, and enhances the convenience and safety of workers.
Smart Images
Figure CN224484745U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of safety protection equipment for high-altitude operations, specifically to a safety belt anchor bolt for reinforcing the attachment point of a high-altitude operation. Background Technology
[0002] Safety belt anchor points are anchoring devices used to secure safety belts during high-altitude operations. They are typically installed on building structures (such as steel structures, concrete walls, etc.) as the connection points for workers' safety belts. Their function is to prevent workers from falling and ensure safety during high-altitude operations. During high-altitude operations, safety belt anchor points need to withstand significant impact forces, therefore they must possess sufficient strength and stability to avoid safety accidents caused by anchor failure.
[0003] However, some existing safety belt anchors rely solely on the friction between the expansion sleeve and the mounting hole for fixation. These anchors may loosen over time or under impact, leading to anchor failure. Furthermore, traditional anchors exhibit significant stress concentration, making them prone to breakage under heavy loads. Additionally, the connecting rings of many anchors are integral structures, limiting their flexibility and potentially restricting worker movement, even causing safety belt twisting and reducing safety performance. Therefore, a more robust and durable safety belt anchor is urgently needed. Utility Model Content
[0004] The purpose of this invention is to provide a safety belt anchor for high-altitude operations to improve anchoring stability, distribute stress, and enhance anti-slip performance.
[0005] The technical solution provided by this utility model is a safety belt anchor bolt for high-altitude operations, comprising an anchor body made of high-strength alloy steel, an expansion sleeve, and a conical locking head. One end of the anchor body is rotatably connected to a connecting ring for connecting the safety belt, and the other end is threadedly connected to the conical locking head. The expansion sleeve is fitted onto the lower part of the anchor body, and multiple expansion ports are provided at one end of the conical locking head. The middle part of the anchor body, inside the expansion sleeve, is provided with multiple stress-dispersing protrusions that abut against the inside of the expansion sleeve.
[0006] As a preferred technical solution of this utility model, a positioning plate is welded and fixed at the connection between the anchor rod body and the connecting ring, and the outer side of the limiting plate is rotatably connected to the connecting ring through a bearing, and the other side of the bearing is fixed with a limiting plate by welding.
[0007] As a preferred embodiment of this utility model, the connecting ring is composed of a rotating ring and a fixed ring that are hinged to each other. The inner side of the rotating ring is connected to the bearing, and the fixed ring is connected to the external safety belt. The diameter of the limiting plate matches the outer diameter of the rotating ring.
[0008] As a preferred technical solution of this utility model, the expansion sleeve is provided with multiple anti-slip patterns with an axial inclination of 30 degrees to 60 degrees at the expansion port, and the anti-slip patterns are knurled bidirectional overlapping structures.
[0009] As a preferred embodiment of this utility model, the expansion port is a linear groove opened along the axial direction of the expansion sleeve, and the number of expansion ports is at least three.
[0010] As a preferred technical solution of this utility model, the anchor body is connected to the other end of the expansion sleeve by a positioning nut through a thread, and a gasket is provided between the positioning nut and the expansion sleeve.
[0011] As a preferred technical solution of this utility model, the surface of the conical locking head is provided with multiple anti-slip grooves along the axial direction, and the bottom of the conical locking head on the outer side is provided with multiple circumferentially distributed limiting rings protruding from the surface.
[0012] As a preferred embodiment of this utility model, the tail of the conical locking head is located outside the expansion sleeve, and the diameter of the tail of the conical locking head is larger than the outer diameter of the expansion sleeve.
[0013] The advantages of this utility model compared with the prior art are as follows:
[0014] 1. This safety anchor reinforcement bolt, through the cooperation of the conical locking head and the expansion sleeve, combined with the anti-slip texture and the limiting ring design, effectively enhances the anchor bolt's pull-out resistance and anti-slip ability, reduces the risk of loosening, and improves anchoring stability;
[0015] 2. The stress-dispersing bosses on the anchor body of this safety anchor reinforcement bolt can reduce local stress concentration and improve the impact resistance and durability of the overall structure;
[0016] 3. The connecting ring in this safety anchor bolt adopts a bearing and hinge structure design, which allows the safety belt to rotate freely, avoids twisting, and improves the convenience and safety of the workers. Attached Figure Description
[0017] Figure 1 This is a structural diagram of a safety belt anchor bolt for reinforcing points in high-altitude operations according to this utility model.
[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of a safety belt anchor bolt for reinforcing points in high-altitude operations according to this utility model.
[0019] Figure 3 This is a structural diagram of the conical locking head of a safety belt anchor bolt for reinforcing the attachment point of a high-altitude work, according to this utility model.
[0020] Figure 4This is an exploded structural diagram of a safety belt anchor bolt for reinforcing points in high-altitude operations according to this utility model.
[0021] As shown in the figure:
[0022] 1. Anchor bolt body; 2. Expansion sleeve; 3. Conical locking head; 4. Connecting ring; 5. Expansion port; 6. Stress dispersion boss; 7. Positioning plate; 8. Bearing; 9. Limiting plate; 10. Rotating ring; 11. Fixing ring; 12. Anti-slip texture; 13. Positioning nut; 14. Washer; 15. Anti-slip groove; 16. Limiting ring. Detailed Implementation
[0023] 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.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example 1:
[0026] As per the instruction manual Figure 1-4 As shown, a safety belt anchor bolt for high-altitude operations includes an anchor body 1 made of high-strength alloy steel, an expansion sleeve 2, and a conical locking head 3.
[0027] In this utility model, one end of the anchor rod body 1 is rotatably connected to a connecting ring 4 for connecting a safety belt. A positioning plate 7 is welded and fixed at the connection between the anchor rod body 1 and the connecting ring 4. The outer side of the limiting plate 9 is rotatably connected to the connecting ring 4 through a bearing 8. The other side of the bearing 8 is fixed to the limiting plate 9 by welding. The connecting ring 4 is composed of a rotating ring 10 and a fixed ring 11 that are hinged to each other. The inner side of the rotating ring 10 is connected to the bearing 8, and the fixed ring 11 is connected to the external safety belt. The diameter of the limiting plate 9 matches the outer diameter of the rotating ring 10.
[0028] In this utility model, the other end of the anchor rod body 1 is connected to the conical locking head 3 by a thread. The surface of the conical locking head 3 is provided with multiple anti-slip grooves 15 along the axial direction, and the bottom of the conical locking head 3 on the outer side is provided with multiple circumferentially distributed limiting rings 16 protruding from the surface. The tail of the conical locking head 3 is located outside the expansion sleeve 2, and the diameter of the tail of the conical locking head 3 is larger than the outer diameter of the expansion sleeve 2.
[0029] In this utility model, the expansion sleeve 2 is sleeved on the lower part of the anchor bolt body, and a plurality of expansion ports 5 are provided at one end of the conical locking head 3. The expansion ports 5 are linear grooves opened along the axial direction of the expansion sleeve 2, and the number of expansion ports 5 is at least three. The expansion sleeve 2 is provided with a plurality of anti-slip textures 12 with an axial inclination of 45 degrees at the expansion ports 5. The anti-slip textures 12 are knurled bidirectional overlapping structures. The anchor bolt body 1 is connected to the other end of the expansion sleeve 2 by a positioning nut 13 through a thread, and a gasket 14 is provided between the positioning nut 13 and the expansion sleeve 2.
[0030] In this utility model, the middle part of the anchor body 1 is provided with a plurality of stress-dispersing protrusions 6 that abut against the inside of the expansion sleeve 2.
[0031] In specific implementation, this utility model
[0032] Insert the anchor bolt into the pre-drilled hole, tighten the positioning nut 13 to move the anchor bolt body 1 outward through the thread, and then move it into the expansion sleeve 2 through the conical locking head 3, so that the expansion port 5 of the expansion sleeve 2 expands outward and fits tightly against the hole wall. The anti-slip texture 12 on the outside of the expansion sleeve 2 and the limiting ring 16 at the bottom of the conical locking head 3 further enhance the anti-slip effect.
[0033] When the seat belt is under stress, the stress-dispersing boss 6 distributes the force to the entire expansion sleeve 2, so that the load can be evenly distributed and avoid excessive local stress leading to breakage. At the same time, the connecting ring 4 can rotate freely, reducing the twisting of the seat belt and improving the comfort and safety of use.
[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.
Claims
1. A safety belt anchor bolt for high-altitude operations, comprising an anchor body (1) made of high-strength alloy steel, an expansion sleeve (2) and a conical locking head (3), characterized in that: One end of the anchor body (1) is rotatably connected to a connecting ring (4) for connecting a safety belt, and the other end is connected to a conical locking head (3) by a thread. The expansion sleeve (2) is fitted onto the lower part of the anchor bolt body, and multiple expansion ports (5) are provided at one end of the conical locking head (3); The middle part of the anchor body (1) is located inside the expansion sleeve (2) and has a plurality of stress-dispersing protrusions (6) that abut against the inside of the expansion sleeve (2).
2. The safety belt anchor bolt for high-altitude operations according to claim 1, characterized in that: A positioning plate (7) is welded and fixed at the connection between the anchor body (1) and the connecting ring (4), and the outer side of the limiting plate (9) is rotatably connected to the connecting ring (4) through a bearing (8). The other side of the bearing (8) is fixed by welding the limiting plate (9).
3. The safety belt anchor bolt for high-altitude operations according to claim 2, characterized in that: The connecting ring (4) is composed of a rotating ring (10) and a fixed ring (11) that are hinged to each other. The inner side of the rotating ring (10) is connected to the bearing (8), and the fixed ring (11) is connected to the external safety belt. The diameter of the limiting plate (9) matches the outer diameter of the rotating ring (10).
4. The safety belt anchor bolt for high-altitude operations according to claim 1, characterized in that: The expansion sleeve (2) is provided with multiple anti-slip textures (12) with an axial inclination of 30 to 60 degrees at the expansion port (5). The anti-slip textures (12) are knurled bidirectional overlapping structures.
5. The safety belt anchor bolt for high-altitude operations according to claim 1, characterized in that: The expansion port (5) is a linear slot opened along the axial direction of the expansion sleeve (2), and the number of expansion ports (5) is at least three.
6. The safety belt anchor bolt for high-altitude operations according to claim 1, characterized in that: The anchor body (1) is connected to the other end of the expansion sleeve (2) by a positioning nut (13) through a thread, and a gasket (14) is provided between the positioning nut (13) and the expansion sleeve (2).
7. The safety belt anchor bolt for high-altitude operations according to claim 1, characterized in that: The surface of the conical locking head (3) is provided with a plurality of anti-slip grooves (15) along the axial direction, and the bottom of the conical locking head (3) on the outer side is provided with a plurality of circumferentially distributed limiting rings (16) protruding from the surface.
8. The safety belt anchor bolt for high-altitude operations according to claim 1, characterized in that: The tail of the conical locking head (3) is located outside the expansion sleeve (2), and the diameter of the tail of the conical locking head (3) is larger than the outer diameter of the expansion sleeve (2).