A fall-preventing aerial work waist belt buckle

Abstract

The utility model discloses a kind of aerial work waistband buckles of anti-falling, belong to safety protection equipment technical field, including belt body and side belt, further including anti-drop subassembly and connecting component, the anti-drop subassembly includes fixed frame on belt body, fixed frame is equipped with limit shaft and built-in slide shaft of tension spring, slide shaft connects push frame, the inclined slot of the rotating plate fixed on side belt is slidably fitted in the push axle on push frame, limit shaft is clamped by using slope mechanism principle to drive rotating plate rotation, form self-locking connection, the connecting component includes support platform and inner screw ring, and inner screw ring side wall is equipped with locating bolt, inside is through inner thread cooperation end cover, and the other side wall is equipped with anti-drop bolt.The utility model realizes the reliable self-locking of belt body connection by anti-drop subassembly, prevent accidental disengagement, through triple locking of connecting component, the extreme fixed reliability of safety rope hook is ensured, and vibration loosening is prevented, and the comprehensive safety performance of aerial work is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of safety protection equipment technology, and in particular to a fall-prevention high-altitude work belt buckle. Background Technology

[0002] Work belt buckles are crucial safety equipment for workers at heights, and their structural reliability directly affects their lives. Existing work belt buckles typically need to fulfill two main functions: securing the work belt itself and firmly suspending the safety rope.

[0003] In practical use, traditional belt connection structures, such as simple snap buckles or pin buckles, may experience loosening of the locking mechanism or insufficient self-locking capability when subjected to high-intensity instantaneous impact and tension, or under prolonged complex vibration environments during operation. This structural defect can easily lead to accidental loosening of the connection, posing a serious safety hazard in high-altitude operations.

[0004] Meanwhile, the method of securing the hooks or D-rings used to suspend life safety ropes to the buckle body urgently needs improvement. Currently, common designs rely on a single threaded connection or simple welding. However, a single threaded connection inherently risks loosening under continuous vibration, while welded structures are difficult to replace quickly or perform routine safety checks. Once the safety rope's connection point fails, the entire buckle instantly loses its basic fall protection function.

[0005] In summary, existing high-altitude work belt buckles are inadequate in terms of the anti-slip performance of the belt connection and the anti-loosening reliability of the safety rope attachment point. There is a lack of an integrated and highly reliable structural design that can simultaneously solve these two key safety hazards, resulting in its overall safety performance failing to meet the ideal standard.

[0006] Therefore, this utility model proposes a fall-prevention high-altitude work belt buckle to address the shortcomings of the prior art. Summary of the Invention

[0007] To overcome the above shortcomings, this utility model provides a fall protection high-altitude work belt buckle, which aims to improve the problems of insufficient reliability of the belt connection structure, easy loosening under vibration or stress, and the single fixing method of the safety rope hook with low reliability of loosening prevention in the existing technology.

[0008] To achieve the above objectives, this utility model provides a fall-prevention high-altitude work belt buckle, comprising: a belt body and side belts, and also includes an anti-slip component and a connecting component.

[0009] The anti-detachment component includes a fixing frame, which is fixedly connected to the end of the belt body. The fixing frame has a fixing cylinder and a limiting shaft inside. A sliding shaft is slidably connected inside the fixing cylinder. A tension spring is sleeved on the sliding shaft. A push frame is fixedly connected to the end of the sliding shaft away from the belt body. A push shaft is fixedly connected to the push frame.

[0010] The anti-detachment component also includes a rotating plate, which is fixedly connected to the end of the side belt. The surface of the rotating plate is provided with an inclined groove for the push shaft to slide into, and the rotating plate is used to rotatably clamp the limiting shaft.

[0011] The connecting assembly includes a support platform, an internal threaded ring integrally formed on the top of the support platform, an internal thread inside the internal threaded ring, a positioning bolt threadedly connected to the side wall of the internal threaded ring, the connecting assembly also includes an end cap and an anti-loosening bolt, the end cap being threadedly engaged with the internal thread, and the anti-loosening bolt being threaded through the other side wall of the internal threaded ring.

[0012] Preferably, a plurality of limiting discs are fixedly connected to the outer peripheral wall of the limiting shaft, and the limiting discs are used to fit against the inner wall of the rotating plate when the limiting shaft is clamped by the rotating plate.

[0013] Preferably, the two ends of the tension spring abut against the inner wall of the bottom of the fixed cylinder and the pusher, respectively.

[0014] Preferably, it also includes a safety rope hook, which is placed on the top surface of the support platform.

[0015] Preferably, the end of the positioning bolt is used to abut against the side wall of the safety rope hook.

[0016] Preferably, the bottom surface of the end cap is used to press down and adhere to the top surface of the safety rope hook when the end cap is screwed into the internal thread.

[0017] Preferably, the end of the anti-loosening bolt is used to abut against the outer peripheral side of the end cap to lock the relative position of the end cap and the inner threaded ring.

[0018] Preferably, when the push shaft slides along the channel of the inclined groove, it can drive the rotating plate to rotate around its own rotation axis.

[0019] This utility model has the following beneficial effects: 1. In this utility model, by setting an anti-loosening component, the rotating plate is driven to rotate by the cooperation of the push shaft and the inclined groove, so that the rotating plate clamps the limiting shaft and forms a self-locking structure in combination with the limiting plate. This solves the problem that the belt body connection structure of the existing belt buckle is simple and is prone to loosening when subjected to large tension or continuous vibration, which poses a safety hazard. It achieves the effect of high connection reliability, good anti-loosening performance and self-locking enhancement effect.

[0020] This utility model solves the problems of the single fixing method, insufficient reliability of anti-loosening, and easy loosening of safety rope hooks in the prior art by setting a connecting component and using a triple fixing method of positioning bolts for lateral limiting, end cap for axial pressing, and anti-loosening bolts to lock the end cap. It achieves triple locking of safety rope hooks, which is extremely firm, prevents loosening due to vibration, and greatly improves the safety of high-altitude operations. Attached Figure Description

[0021] Figure 1 A perspective view of a fall-prevention high-altitude work belt buckle proposed in this utility model; Figure 2 This is a schematic diagram of the fixing frame for a fall-prevention high-altitude work belt buckle proposed in this utility model; Figure 3 This is a schematic diagram of the anti-detachment component of a high-altitude work belt buckle for preventing falls, as proposed in this utility model. Figure 4 This is a schematic diagram of a safety rope hook for a high-altitude work belt buckle designed to prevent falls, as proposed in this utility model. Figure 5 This is a schematic diagram of the connection components of a fall-prevention high-altitude work belt buckle proposed in this utility model.

[0022] Legend: 1. Belt body; 101. Side belt; 2. Anti-detachment assembly; 201. Fixing cylinder; 202. Sliding shaft; 203. Tension spring; 204. Push frame; 205. Push shaft; 206. Turning plate; 207. Inclined groove; 208. Fixing frame; 209. Limiting shaft; 210. Limiting disc; 3. Connecting assembly; 301. Support platform; 302. Internal threaded ring; 303. Positioning bolt; 304. Internal thread; 305. End cap; 306. Anti-detachment bolt; 307. Safety rope hook. 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] Reference Figures 1-5This utility model provides a fall-prevention high-altitude work belt buckle, which aims to solve the safety hazards of insufficient belt body connection reliability and simple fixing structure of safety rope hook in the existing high-altitude work belt buckle, which are prone to loosening in vibration environment.

[0025] Specifically, it includes a belt body 1 and a side belt 101 for connecting and engaging with the belt body 1. The belt body 1 is typically used to wrap around the waist of the worker, while the side belt 101 is used to achieve the closed connection of the fastener.

[0026] It also includes an anti-slip component 2 and a connecting component 3. The anti-slip component 2 is used to achieve a self-locking anti-slip connection between the belt body 1 and the side belt 101, and the connecting component 3 is used to achieve triple anti-loosening fixation of the safety rope hook 307.

[0027] The anti-detachment component 2 includes a fixing frame 208, which is firmly fixed to the end of the belt body 1. The fixing frame 208 has a fixing cylinder 201 and a limiting shaft 209 integrally formed inside. The fixing cylinder 201 is hollow and extends along the length of the belt body 1. A sliding shaft 202 is slidably connected inside the fixing cylinder 201. A tension spring 203 is sleeved on the sliding shaft 202. A pusher 204 is fixedly connected to the end of the sliding shaft 202 away from the belt body 1. The pusher 204 is U-shaped or plate-shaped. A vertically fixed connection is made on the pusher 204. The anti-detachment assembly 2 also includes a rotating plate 206 connected to the push shaft 205. The rotating plate 206 is firmly fixed to the end of the side belt 101. The surface of the rotating plate 206 is provided with a slanted groove 207 for the push shaft 205 to slide into precisely. In the assembled state, the rotating plate 206 is used to rotatably clamp the limiting shaft 209 in the fixing frame 208. This inclined self-locking mechanism, which is formed by the sliding shaft 202, the push shaft 205, the slanted groove 207 and the rotating plate 206, ensures the high stability of the connection between the belt body 1 and the side belt 101.

[0028] The connecting assembly 3 includes a support platform 301, on the top of which is an integrally formed inner thread ring 302. The inner thread ring 302 has an internal thread 304 inside. A positioning bolt 303 is radially threaded on the side wall of the inner thread ring 302. The connecting assembly 3 also includes an end cap 305 and an anti-detachment bolt 306. The outer periphery of the end cap 305 has an external thread that mates with the internal thread 304. The end cap 305 is threadedly engaged with the internal thread 304. The anti-detachment bolt 306 is radially threaded through the other side wall of the inner thread ring 302. This triple locking structure ensures the reliability of the safety rope hook 307.

[0029] To improve the anti-loosening performance of the anti-detachment component 2, multiple limiting discs 210 are fixedly connected to the outer peripheral wall of the limiting shaft 209 inside the fixing frame 208. These limiting discs 210 are preferably annular bosses integrally formed with the limiting shaft 209. The limiting discs 210 are arranged at equal or unequal intervals along the axial direction of the limiting shaft 209. The edges of the limiting discs 210 can be designed as acute angles or rounded corners to cooperate with the clamping action of the rotating plate 206. When the rotating plate 206 rotates around its own rotation axis under the drive of the push shaft 205 and clamps the limiting shaft 209, the inner wall of the rotating plate 206 will simultaneously adhere to multiple limiting discs. The outer periphery of 210, this structural design, through the setting of multiple limiting discs 210, significantly increases the surface contour complexity of the limiting shaft 209, so that the contact between the inner wall of the rotating plate 206 and the limiting shaft 209 changes from surface contact to multi-line contact or multi-point contact, which greatly improves the static friction between the two. On the other hand, the physical blocking structure formed by multiple limiting discs 210 can effectively resist the small axial or radial displacement that may occur when the belt body 1 and the side belt 101 are subjected to instantaneous impact tension or continuous vibration during high-altitude operations, ensuring the long-term stability and reliability of the connection.

[0030] To provide a reliable power source for the self-locking function of the anti-detachment component 2, a tension spring 203 is sleeved on the outer periphery of the rod portion of the sliding shaft 202. The tension spring 203 is completely accommodated within the internal cavity of the fixed cylinder 201 in the axial direction. The rear end of the tension spring 203, i.e., the end closest to the belt body 1, firmly abuts against the inner wall of the bottom of the fixed cylinder 201. The inner wall of the bottom of the fixed cylinder 201 provides a fixed supporting reaction surface for the tension spring 203. The front end of the tension spring 203, i.e., the end furthest from the belt body 1, firmly abuts against... The pusher 204 faces the end face of the fixed cylinder 201. This assembly structure allows the pusher 204 to move outward synchronously when the operator pulls the slide shaft 202, thereby compressing the tension spring 203. When the operator releases the slide shaft 202, the elastic energy stored in the compressed tension spring 203 is released instantly, pushing the pusher 204 to move in the opposite direction. Then, through the mechanical cooperation between the push shaft 205 and the inclined groove 207, the rotating plate 206 always maintains a strong clamping force on the limit shaft 209, realizing the functions of automatic reset and continuous locking.

[0031] It also includes a safety rope hook 307, which is usually a D-ring, O-ring or spring hook connection part, and is the only connection point for the life safety rope of high-altitude workers. The support platform 301 in the connecting assembly 3 serves as the mounting base for the safety rope hook 307. The top surface of the support platform 301 is designed as a flat support surface, or the top surface of the support platform 301 is provided with a countersunk groove that matches the shape of the connecting ring part of the safety rope hook 307. The connecting ring part of the safety rope hook 307 is stably placed on the top surface of the support platform 301. The structure of the support platform 301 provides a solid axial support base for the safety rope hook 307, preventing the safety rope hook 307 from sinking or shifting its position when subjected to tension.

[0032] To achieve the first preliminary limiting of the safety rope hook 307 and prevent the safety rope hook 307 from lateral swaying or planar rotation on the top surface of the support 301 before it is fully locked, a positioning bolt 303 is radially threaded onto the side wall of the inner threaded ring 302 of the connecting assembly 3. The positioning bolt 303 is preferably a wing bolt or an internal hexagon set screw with a hand-tight head. After the safety rope hook 307 is placed in place, the positioning bolt 303 is tightened. The end of the positioning bolt 303, preferably a flat head or one with a soft nylon tip, passes through the side wall of the inner threaded ring 302 and radially abuts against the side wall of the safety rope hook 307. This lateral abutment provides stable radial positioning for the safety rope hook 307, facilitating the subsequent axial locking operation.

[0033] After the safety rope hook 307 is radially positioned by the positioning bolt 303, the end cap 305 is used to realize the main locking function. The lower part of the end cap 305 has a precision external thread. The end cap 305 is threaded with the internal thread 304 inside the internal thread ring 302. The top of the end cap 305 can be set as a knurled or polygonal structure to facilitate screwing. When the end cap 305 is rotated, the end cap 305 will be smoothly screwed into the internal thread ring 302 axially downward. The bottom surface of the end cap 305 is designed as a flat annular pressing surface. During the screwing process, the bottom surface of the end cap 305 will gradually press down and finally stick to the top surface of the safety rope hook 307. Under the combined action of the strong axial pressing force of the end cap 305 and the axial support force of the support platform 301, the safety rope hook 307 is firmly clamped between the two and cannot produce any axial movement.

[0034] To prevent the end cap 305 from loosening accidentally during long-term vibration or accidental scraping in high-altitude operations, which could lead to a loss of clamping force on the safety rope hook 307, an anti-loosening bolt 306 is radially threaded on the other side wall of the inner threaded ring 302 of the connecting component 3. The anti-loosening bolt 306 is preferably a set screw. After the end cap 305 is tightened in place, the operator must turn the anti-loosening bolt 306. The end of the anti-loosening bolt 306 will radially press against the thread or special groove on the outer peripheral side of the end cap 305. Through the strong friction or physical embedding force applied by the end of the anti-loosening bolt 306, the absolute relative position of the end cap 305 and the inner threaded ring 302 is locked. This triple locking design (lateral positioning, axial clamping, and radial locking) ensures the ultimate safety of the safety rope hook 307 connection.

[0035] The engagement of the push shaft 205 and the inclined groove 207 is the core mechanism for achieving rapid and automatic locking between the belt body 1 and the side belt 101. The push shaft 205 is preferably a cylindrical pin made of high-strength wear-resistant alloy. The push shaft 205 is vertically fixed to the bottom surface of the push frame 204. The surface of the rotating plate 206 is provided with an inclined groove 207 of a specific curve. The groove direction of the inclined groove 207 forms a preset non-linear angle with the axial movement direction of the push shaft 205. When the sliding shaft 202 drives the push frame 204 and the push shaft... When 205 moves linearly, the outer circumferential surface of the push shaft 205 will slide precisely along the channel of the inclined groove 207. Due to the inclined guiding effect of the inclined groove 207, the normal pressure applied by the push shaft 205 to the groove wall of the inclined groove 207 will be decomposed to generate a constantly changing tangential component force. This tangential component force drives the rotating plate 206 to rotate around its own rotation axis, so that the inner wall of the rotating plate 206 approaches or moves away from the limiting shaft 209 with the designed clamping curve, realizing the action of rapid engagement and strong clamping.

[0036] Working principle: During operation, based on the connection between the belt body 1 and the side belt 101, the anti-detachment component 2 achieves a stable connection and prevents detachment. The fixing frame 208 is fixedly connected to the belt body 1, and the rotating plate 206 is fixedly connected to the side belt 101. Pulling the sliding shaft 202 compresses the tension spring 203 in the fixing cylinder 201. The sliding shaft 202 drives the push frame 204 and the push shaft 205 to move. The push shaft 205 is embedded in the inclined groove 207 of the rotating plate 206 and slides along the groove, driving the rotating plate 206 to rotate around a preset axis. After the rotating plate 206 rotates, it gradually clamps the fixing frame 208. The internal limiting shaft 209 enables the connection between the side belt 101 and the belt body 1. At the same time, multiple limiting discs 210 on the outer wall of the limiting shaft 209 synchronously adhere to the inner wall of multiple rotating plates 206 as the rotating plate 206 clamps. By increasing contact friction and physical obstruction, the connection between the side belt 101 and the belt body 1 is prevented from loosening. When the sliding shaft 202 is released, the tension spring 203 resets and pushes the sliding shaft 202 to move in the opposite direction. The push shaft 205 drives the rotating plate 206 to further clamp the fixing frame 208, thereby strengthening the connection stability and adapting to the load-bearing requirements of the belt body 1 during high-altitude operations. The connecting component 3 ensures that the safety rope hook 307 is secure and prevents loosening. The safety rope hook 307 is placed on the support 301 of the connecting component 3. First, the positioning bolt 303 is turned so that it passes through the inner threaded ring 302 and abuts against the side wall of the safety rope hook 307 to achieve initial positioning of the hook and prevent it from shifting laterally. Second, the end cap 305 is inserted into the inner thread 304. The end cap 305 is rotated so that the inner thread 304 and the anti-loosening bolt 306 form a threaded connection. The end cap 305 presses down on the top of the safety rope hook 307 as the thread engages, completing the secondary locking. At this time, the anti-loosening bolt 306 locks the relative position of the end cap 305 and the inner threaded ring 302 to prevent the threaded connection from loosening due to high-altitude vibration, ensuring that the safety rope hook 307 is securely connected to the buckle and meeting the fall prevention requirements for high-altitude operations.

Claims

1. A fall protection harness for working at heights, comprising: The belt body (1) and the side belt (101) are characterized in that they further include an anti-detachment component (2) and a connecting component (3). The anti-detachment component (2) includes a fixing frame (208), which is fixedly connected to the end of the belt body (1). The fixing frame (208) has a fixing cylinder (201) and a limiting shaft (209) inside. A sliding shaft (202) is slidably connected inside the fixing cylinder (201). A tension spring (203) is sleeved on the sliding shaft (202). A push frame (204) is fixedly connected to the end of the sliding shaft (202) away from the belt body (1). A push shaft (205) is fixedly connected to the push frame (204). The anti-detachment component (2) also includes a rotating plate (206), which is fixedly connected to the end of the side belt (101). The surface of the rotating plate (206) has a slanted groove (207) for the push shaft (205) to slide into. The rotating plate (206) is used to rotatably clamp the limiting shaft (209). The connecting assembly (3) includes a support platform (301), an internal threaded ring (302) integrally provided on the upper part of the support platform (301), an internal thread (304) is provided inside the internal threaded ring (302), a positioning bolt (303) is threadedly connected to the side wall of the internal threaded ring (302), the connecting assembly (3) also includes an end cap (305) and an anti-loosening bolt (306), the end cap (305) is threadedly engaged with the internal thread (304), and the anti-loosening bolt (306) is threaded through the other side wall of the internal threaded ring (302).

2. The fall protection high-altitude work belt buckle according to claim 1, characterized in that, Multiple limiting discs (210) are fixedly connected to the outer peripheral wall of the limiting shaft (209). The limiting discs (210) are used to fit against the inner wall of the rotating plate (206) when the limiting shaft (209) is clamped by the rotating plate (206).

3. A fall-prevention high-altitude work belt buckle according to claim 1, characterized in that, The two ends of the tension spring (203) abut against the inner wall of the bottom of the fixed cylinder (201) and the pusher (204), respectively.

4. A fall protection high-altitude work belt buckle according to claim 1, characterized in that, It also includes a safety rope hook (307) placed on the top surface of the support (301).

5. A fall protection high-altitude work belt buckle according to claim 4, characterized in that, The end of the positioning bolt (303) is used to abut against the side wall of the safety rope hook (307).

6. A fall protection high-altitude work belt buckle according to claim 4, characterized in that, The bottom surface of the end cap (305) is used to press down and adhere to the top surface of the safety rope hook (307) when the end cap (305) is screwed into the internal thread (304).

7. A fall protection high-altitude work belt buckle according to claim 6, characterized in that, The end of the anti-loosening bolt (306) is used to abut against the outer peripheral side of the end cap (305) to lock the relative position of the end cap (305) and the inner threaded ring (302).

8. A fall protection high-altitude work belt buckle according to claim 1, characterized in that, When the push shaft (205) slides along the channel of the inclined groove (207), it can drive the rotating plate (206) to rotate around its own rotation axis.

Images