Rigid guide rail trigger type locking falling protector
Through the matching structure of the wedge block and the wedge groove and the guide wheel roller design, the shortcomings of the existing fall arrester in terms of locking reliability, sliding smoothness, structural stability and durability are solved, providing efficient and safe fall prevention protection.
Patent Information
- Application Number
- CN202510992909.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-09-12
AI Technical Summary
Existing fall arresters have deficiencies in locking reliability, sliding smoothness, structural stability, operational convenience and durability, and are unable to meet the safety requirements of high-altitude operations.
The wedge block and wedge groove are matched with each other. The wedge block is triggered to slide in the wedge groove by the toggle structure to achieve locking and unlocking. Combined with the guide wheel and roller design, friction is reduced, and sliding smoothness and durability are improved.
It achieves fast and reliable locking protection in emergency situations and quickly releases the lock after the danger is lifted, which improves operating efficiency, reduces friction and wear, and extends service life.
Smart Images
Figure CN120617863A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of fall arresters, in particular to a rigid guide rail triggered locking fall arrester. Background Art
[0002] Aerial work is extremely common in many fields, including modern industry and construction. Workers often need to perform tasks at height, such as power transmission and transformation, telecommunications facility construction and maintenance, chemical plant inspection and repair, and high-rise building construction and maintenance. However, working at height carries a high risk of falling. Accidents can cause serious bodily harm or even life-threatening injuries to workers, while also resulting in significant losses for the businesses involved. Therefore, reliable fall prevention devices are crucial for ensuring the safety of aerial work.
[0003] Early fall arresters had relatively simple structures. For example, some implemented a locking block that interacted with a keyhole on the lifeline. When a worker fell, the safety belt pulled on the hook, pushing the locking block out and into the keyhole. While this method could prevent the fall to a certain extent, it had several drawbacks. First, the impact on the falling person could be significant, potentially causing secondary injuries. Second, the rigid collision between the locking block and the lifeline caused it to deform easily, necessitating frequent replacement and making it difficult to operate, especially during climbing or lateral movement.
[0004] Some rope-based fall arrest devices, however, are flexible and prone to shaking, potentially causing panic in workers. Furthermore, in complex environments, the ropes can easily become tangled and wear out, reducing safety and reliability. Furthermore, some fall arresters are complex and require high manufacturing precision, which not only increases costs but also increases the probability of failure. Once a failure occurs, repairs are difficult, severely impacting operational reliability.
[0005] Existing rigid rail-type fall arresters also present numerous problems. Some have simple structures, making them prone to slipping when construction workers struggle and falter during a fall, effectively failing to ensure safety. Some arresters can become stuck at rail joints or even incorrectly locked, impacting work efficiency and reducing operational stability. Other arresters have strict rail requirements, requiring numerous precautions during installation. These can also lead to uneven force distribution between the rail and the lifting equipment, posing safety risks.
[0006] In light of the numerous shortcomings of existing fall arresters in terms of locking reliability, smooth sliding, structural stability, ease of operation, and durability, the present rigid guide rail-triggered locking fall arrester was developed to provide safer, more efficient, and more stable fall protection for workers working at heights. It addresses these shortcomings, improves the overall performance of fall arresters, and ensures safer working at heights. Summary of the Invention
[0007] In view of the above-mentioned deficiencies in the prior art, the present invention provides a rigid guide rail triggered locking fall arrester.
[0008] The present invention provides the following technical solution: a rigid guide rail trigger-type locking fall arrester, comprising a main body and a rectangular opening provided at the top of the main body, a toggle structure hingedly connected to the rectangular opening via a connecting shaft, a wedge-shaped groove provided inside the main body at the front end of the rectangular opening, and a slidable wedge block provided in the wedge groove, the toggle structure pushing the wedge block deeper into the wedge groove to lock the guide rail;
[0009] Two rotatable guide wheels are provided on both sides of the main body, which roll on both sides of the track through four guide wheels, and rotatable rollers are provided on the front and rear ends of the main body, which contact the front of the track through two rollers to reduce friction.
[0010] Preferably, the cross-section of the main body is U-shaped and is slidably connected to the guide rail through guide wheels and rollers.
[0011] Preferably, the toggle structure includes a trigger block and a support ring installed on the top of the trigger block for installing a rope, the bottom of the trigger block is hinged with a knock block, and the other end of the knock block is hinged to the end face of the wedge block.
[0012] Preferably, when the trigger block is triggered downward by the rope, the knock block pushes the wedge block to slide on the inclined surface of the wedge block, so that the flat surface at the bottom of the wedge block frictionally contacts the guide rail, triggering the locking function; when the trigger block is pulled upward by the rope, the knock block drives the wedge block to return to its original position and cancels the locking function of the guide rail.
[0013] Preferably, the wedge block is provided with a slide groove in contact with the wedge groove, and the inclined surface of the wedge groove is installed with a protrusion that slides in the slide groove of the wedge block, so that the wedge block slides in accordance with the inclined surface of the wedge groove.
[0014] Preferably, the end surface of the wedge-shaped groove in contact with the rail is provided with a wear-resistant layer.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This rigid rail-triggered locking fall arrester utilizes a toggle mechanism, a wedge block, and a wedge groove. In an emergency such as a fall, the trigger block, pulled by the rope, rapidly pushes the wedge block along the slope of the wedge groove, creating a tight frictional contact between the bottom surface of the wedge block and the rail, locking the device. The self-locking nature of this wedge structure ensures a stable and reliable locking state, effectively preventing the arrester from sliding further downward. This provides users with timely and secure protection, significantly reducing the risk of falls.
[0017] Once the danger is resolved, simply pull the rope upwards to drive the trigger block and knock block, causing the wedge block to reverse and return to its original position, quickly releasing the lock and allowing the fall arrester to immediately resume smooth sliding without affecting subsequent use. This convenient triggering and resetting method improves operational efficiency, especially in scenarios requiring frequent movement or emergency rescue.
[0018] Four guide wheels on either side of the main body roll along the rails, while two rollers at the front and rear ends engage the rails directly. This multi-wheel design converts sliding friction between the arrester and the rails into rolling friction, significantly reducing friction during movement. This allows the arrester to slide smoothly with the user, enhancing ease of use. Furthermore, the wear-resistant layer on the contact surface between the wedge-shaped groove and the rail, as well as the strategic placement of the guide wheels and rollers, reduces direct wear between the components and the rails, extending the arrester's service life and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the present invention;
[0020] Figure 2 For the present invention Figure 1 Half-section view;
[0021] Figure 3 A half-section view of the main body of the present invention;
[0022] Figure 4 This is a schematic diagram of the toggle structure connecting the wedge blocks of the present invention.
[0023] In the figure: 1. Main body; 2. Rectangular opening; 3. Toggle structure; 4. Wedge groove; 5. Wedge block; 6. Guide wheel; 7. Roller; 31. Trigger block; 32. Support ring; 33. Knock block; 8. Slide groove. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components to avoid unnecessary confusion of the concepts of the present invention.
[0025] See also Figure 1 , Figure 2 and Figure 3 、 Figure 4 A rigid guide rail triggered locking anti-fall device, the core components of which include a main body 1, a toggle structure 3, a wedge block 5, a guide wheel 6 and a roller 7, etc. The components cooperate with each other to achieve the anti-fall function.
[0026] The main body 1, serving as the supporting frame of the entire fall arrester, features a U-shaped cross-section, slidingly engaging with the guide rails via guide wheels 6 on both sides and rollers 7 at the front and rear ends. A rectangular opening 2 is located at the top of the main body 1, serving as the key location for mounting the toggle mechanism 3. Inside the main body 1, a wedge-shaped groove 4 is strategically positioned at the front end of the rectangular opening 2. The wedge block 5 is positioned within this groove, allowing it to slide along the groove.
[0027] The toggle mechanism 3 is hinged within the rectangular opening 2 via a connecting shaft and comprises a trigger block 31, a support ring 32, and a knock block 33. The support ring 32 is mounted on top of the trigger block 31 and is used to connect the rope. The bottom of the trigger block 31 is hinged to one end of the knock block 33, and the other end of the knock block 33 is connected to the end face of the wedge block 5.
[0028] In order to achieve smooth sliding with the guide rail, two rotatable guide wheels 6 are installed on both sides of the main body 1, and the four guide wheels 6 roll on both sides of the track respectively; at the same time, a rotatable roller 7 is installed at the front and rear ends of the main body 1, and the two rollers 7 are in direct contact with the front of the track.
[0029] In addition, the wedge block 5 is provided with a chute 8 that contacts the wedge groove 4. A protrusion is mounted on the inclined surface of the wedge groove 4. The protrusion can slide within the chute 8 of the wedge block 5, thereby ensuring that the wedge block 5 can slide smoothly along the inclined surface of the wedge groove 4. Furthermore, the end surface of the wedge groove 4 that contacts the rail is also provided with a wear-resistant layer.
[0030] Normal Sliding State: When the locking function is not triggered, the arrester slides along the rail using the four guide wheels 6 on either side of the main body 1, and the two rollers 7 at the front and rear ends contact the rail's front surface. This structural design significantly reduces friction when the arrester moves on the rail, allowing it to slide smoothly along the rail as the user moves.
[0031] Locking triggering process: When an emergency such as a fall occurs, the rope will pull the trigger block 31 downward, causing the trigger block 31 to be triggered downward. At this time, the knocking block 33 hinged to the bottom of the trigger block 31 will move accordingly. Since the other end of the knocking block 33 is hinged to the end face of the wedge block 5, the knocking block 33 will push the wedge block 5 to slide along the inclined surface in the wedge groove 4. During the sliding process, with the guidance of the protrusion on the inclined surface of the wedge groove 4 sliding in the slide groove 8 of the wedge block 5, the wedge block 5 can slide closely in accordance with the inclined surface of the wedge groove 4, so that the flat surface at the bottom of the wedge block 5 gradually comes into frictional contact with the guide rail. As the wedge block 5 continues to penetrate deeper into the wedge groove 4, it eventually locks the guide rail, preventing the fall arrester from continuing to slide down, thus playing a role in fall protection. Moreover, the wear-resistant layer on the end face of the wedge groove 4 in contact with the track can effectively improve the wear resistance here and extend the service life of the fall arrester.
[0032] Unlocking process: When the danger is eliminated, the rope pulls the trigger block 31 upward, causing it to be pulled up. At this time, the knock block 33 drives the wedge block 5 to move in the opposite direction. The wedge block 5 gradually returns to its original position along the inclined surface of the wedge groove 4. The flat surface at its bottom breaks away from contact with the guide rail, thus canceling the locking function of the guide rail. The fall arrester can return to its normal sliding state and can be used again.
[0033] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the spirit and scope of protection of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present invention.
Claims
1. A rigid guide rail triggered locking anti-fall device, characterized by: The invention comprises a main body (1) and a rectangular opening (2) arranged at the top of the main body (1); a toggle structure (3) is hingedly connected to the rectangular opening (2) via a connecting shaft; a wedge-shaped groove (4) is provided inside the main body (1) and is located at the front end of the rectangular opening (2); a slidable wedge-shaped block (5) is provided in the wedge-shaped groove (4); the toggle structure (3) pushes the wedge-shaped block (5) deep into the wedge-shaped groove (4) to lock the guide rail; Two rotatable guide wheels (6) are provided on both sides of the main body (1), and the main body (1) rolls on both sides of the track through the four guide wheels (6). Rotatable rollers (7) are provided at both the front and rear ends of the main body (1), and the two rollers (7) contact the front of the track to reduce friction.
2. A rigid guide rail triggered locking anti-fall device according to claim 1, characterized in that: The main body (1) has a U-shaped cross section and is slidably connected to the guide rail via a guide wheel (6) and a roller (7).
3. The rigid guide rail triggered locking anti-fall device according to claim 1, characterized in that: The toggle structure (3) comprises a trigger block (31) and a support ring (32) mounted on the top of the trigger block (31) for mounting a rope. A knock block (33) is hingedly connected to the bottom of the trigger block (31), and the other end of the knock block (33) is hingedly connected to the end face of the wedge block (5).
4. The rigid guide rail triggered locking anti-fall device according to claim 3, characterized in that: When the trigger block (31) is triggered downward by the rope, the knock block (33) pushes the wedge block (5) to slide on the inclined surface of the wedge block (5), so that the plane at the bottom of the wedge block (5) is in friction contact with the guide rail, triggering the locking function. When the trigger block (31) is pulled upward by the rope, the knock block (33) drives the wedge block (5) to return to its original position and cancels the locking function of the guide rail.
5. The rigid guide rail triggered locking anti-fall device according to claim 1, characterized in that: The wedge block (5) is provided with a sliding groove (8) in contact with the wedge groove (4), and the inclined surface of the wedge groove (4) is provided with a protrusion that slides in the sliding groove (8) of the wedge block (5), so that the wedge block (5) slides in contact with the inclined surface of the wedge groove (4).
6. The rigid guide rail triggered locking anti-fall device according to claim 1, characterized in that: The end surface of the wedge-shaped groove (4) in contact with the rail is provided with a wear-resistant layer.