Falling protector for safety rope
By designing the upper and lower locking rod structures inside the fall arrestor box, and combining them with a sensitive adjustment and buffering mechanism, the problems of insufficient sensitivity and unadjustable locking force in traditional fall arrestors have been solved, thus achieving both sensitive adjustment and improved safety performance.
Patent Information
- Application Number
- CN202520001300.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-02
AI Technical Summary
Traditional safety rope fall arrestors lack sensitivity, cannot accurately distinguish between normal use and accidental falls, have a fixed locking force that cannot be adjusted, and lack an effective cushioning mechanism, posing safety hazards.
A fall arrestor was designed, comprising a fall arrestor box, a rope winding cavity, a rope winding shaft, a sensitive adjustment box, an upper locking rod, and a lower locking rod. Sensitive adjustment is achieved through a limit slide, a support spring, and an adjusting screw, while reliable locking and buffering are provided by a buffer gear and a locking gear.
It achieves sensitive adjustment based on different user pulling forces, quickly locks to prevent falls, provides reliable safety protection, and adapts to different environments by adjusting the screw, thus improving safety performance.
Smart Images
Figure CN223831619U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-altitude activities, and in particular to a fall arrestor for safety ropes. Background Technology
[0002] Safety is paramount in activities such as working at heights and rock climbing. Traditional safety rope fall arrestors have several shortcomings. Firstly, their fall arrest mechanisms are not sensitive enough, making it difficult to accurately distinguish between normal use and accidental falls. This can lead to false triggering or delayed response in practice. For example, some traditional fall arrestors may accidentally lock the safety rope due to slight changes in tension during normal operation, affecting work efficiency; and in the event of a real dangerous fall, their slow reaction may prevent them from providing timely protection.
[0003] On the other hand, the locking force of traditional fall arresters is usually fixed and cannot be adjusted according to different usage scenarios and user needs. This means that in some special situations, such as for lighter users or in relatively mild working environments, the locking may be too tight, affecting normal operation; while when faced with heavy impacts, the locking force may be insufficient to effectively prevent falls.
[0004] Furthermore, traditional fall arresters need improvement in terms of safety performance. In the event of a fall, the instantaneous impact can cause significant injury to both the fall arrester and the user, and traditional fall arresters often lack effective cushioning mechanisms to mitigate this impact. Additionally, traditional fall arresters may not be securely fastened after locking the safety rope, making them prone to loosening and posing a safety hazard to the user.
[0005] In summary, in order to solve the problems of sensitivity, adjustability and safety performance of traditional safety rope fall arrestors, this invention proposes a new type of safety rope fall arrestor. Utility Model Content
[0006] The main purpose of this invention is to provide a safety rope fall arrestor, which aims to solve the problems of insufficient sensitivity and inability to adjust traditional fall arrestors mentioned in the background art.
[0007] To address the aforementioned problems, this utility model proposes a safety rope fall arrestor, comprising a fall arrestor box. A connecting ring is fixedly connected to the center of the upper end of the fall arrestor box. A rope winding cavity is opened inside the fall arrestor box, with rope binding openings at both ends of the rope winding cavity and a rope outlet opening at the lower end of the rope winding cavity. A rope winding shaft is fixedly connected to the center of the inside of the rope winding cavity, and the rope winding shaft passes through the center of the front end of the fall arrestor box. A rope winding handle is fixedly connected to the front end of the rope winding shaft. A safety protection rope is wound around the outside of the rope winding shaft, and the lower end of the safety protection rope extends to the lower end of the rope winding cavity through the rope outlet opening. Sensitive adjustment boxes are fixedly connected to the front and rear sides of the lower end of the fall arrestor box, and the two sensitive adjustment boxes are respectively located on the front and rear sides of the rope outlet opening.
[0008] In one embodiment, each of the two sensitive adjustment boxes has a limiting groove inside the end near the rope outlet, and the two limiting grooves are respectively connected to the inside of the two sensitive adjustment boxes. A lower locking rod is slidably connected inside the lower end of the two limiting grooves.
[0009] In one embodiment, an upper locking rod is rotatably connected to the upper end of the two limiting slide grooves, and a toothed groove is provided on the outer wall of the upper locking rod. The lower locking rod and the upper locking rod are both located between the two limiting slide grooves, and the lower end of the safety rope is wrapped in an "N" shape between the lower locking rod and the upper locking rod.
[0010] In one embodiment, the upper locking rod is provided with connecting sliders at both its front and rear ends, and the front and rear ends of the upper locking rod pass through the two connecting sliders respectively and are rotatably connected to them.
[0011] In one embodiment, support blocks are fixedly connected to both ends of the lower locking rod, and the two support blocks are located directly below the two connecting sliders. The two connecting sliders and the two support blocks are slidably connected inside the two sensitive adjustment boxes.
[0012] In one embodiment, support springs are provided on both the left and right sides between the connecting slider and the support block, and the connecting slider is elastically connected to the top of the support block through two support springs. An adjusting screw is rotatably connected to the center of the lower end of the support block.
[0013] In one embodiment, the adjusting screw is threadedly connected to the lower end of the sensitive adjustment box, and the lower end of the adjusting screw extends to the outside of the lower end of the sensitive adjustment box. Locking gears are fixedly connected to the outer walls on both the front and rear sides of the upper locking rod, and the two locking gears are rotatably connected to the inside of the two sensitive adjustment boxes respectively.
[0014] In one embodiment, buffer gears are sleeved on the outer sides of both the front and rear sides of the lower locking rod, and the two buffer gears are rotatably connected inside the two sensitive adjustment boxes, with buffer blocks fixedly connected to the lower left outer sides of the two buffer gears.
[0015] In one embodiment, an upper limit block is provided at the left end of the buffer gear, and a lower limit block is provided at the lower end of the buffer gear. Both the upper limit block and the lower limit block are fixedly connected to the outer wall of the support block, and the buffer block is rotatably connected between the upper limit block and the lower limit block.
[0016] In one embodiment, an arc-shaped limiting slide rod is fixedly connected between the upper limit block and the lower limit block, and the limiting slide rod passes through the inside of the buffer block and is slidably connected with the buffer block. A buffer spring is provided between the buffer block and the upper limit block, and the buffer spring is sleeved on the outside of the limiting slide rod.
[0017] Beneficial effects:
[0018] 1. This utility model can respond differently depending on the user's pulling force on the safety rope. Under normal use, the pulling force is gentle, and the safety rope can be pulled out smoothly; in the event of a fall, the pulling is rapid, and the upper locking bar can quickly approach the lower locking bar to squeeze and lock the safety rope, preventing the user from falling.
[0019] 2. This utility model achieves effective locking of the safety rope by the cooperation of the toothed groove on the outer wall of the upper locking rod and the lower locking rod, as well as the pressure between the two, thus providing reliable safety protection.
[0020] 3. The upper locking rod of this utility model is elastically connected to the support block through a connecting slider and a support spring, so that the locking force of the lower locking rod and the upper locking rod on the safety rope is positively correlated with the elastic force of the support spring, which can be adjusted according to actual needs.
[0021] 4. The support block of this utility model slides up and down by adjusting the screw inside the lower end of the sensitive adjustment box, thereby adjusting the elastic force of the support spring, and then adjusting the locking tension of the lower locking rod and the upper locking rod on the safety rope, so that the fall arrestor can better adapt to different usage environments and improve its application range.
[0022] 5. In this utility model, while the upper and lower locking rods lock the safety rope, the locking gear outside the upper locking rod and the buffer gear outside the lower locking rod mesh with each other. The upper limit block, lower limit block, limit slide rod and buffer spring and other structures buffer the tension on the upper locking rod, thereby improving the safety performance.
[0023] 6. When the buffer spring of this utility model rotates to fit against the upper limit block, the buffer gear stops rotating and restricts the upper locking rod from continuing to rotate through the locking gear, ensuring that the safety rope is firmly locked between the lower locking rod and the upper locking rod, further improving the overall safety performance of the fall arrestor. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a three-dimensional structural diagram of the safety rope fall arrestor of this utility model;
[0026] Figure 2 This is a schematic diagram of the connection structure of the sensitivity adjustment box of this utility model;
[0027] Figure 3 This is a schematic diagram of the upper locking rod connection structure of this utility model;
[0028] Figure 4 This is a schematic diagram of the lower locking rod connection structure of this utility model;
[0029] Figure 5 This is the utility model Figure 4 Enlarged diagram of point A in the middle.
[0030] The annotations in the attached figures are explained as follows:
[0031] 1. Fall arrestor box; 2. Connecting ring; 3. Rope winding cavity; 4. Rope winding shaft; 5. Rope winding handle; 6. Safety rope; 7. Sensitive adjustment box; 8. Limiting slide groove; 9. Lower locking rod; 10. Upper locking rod; 11. Connecting slider; 12. Support block; 13. Support spring; 14. Adjusting screw; 15. Locking gear; 16. Buffer gear; 17. Buffer block; 18. Upper limit block; 19. Lower limit block; 20. Limiting slide rod; 21. Buffer spring. Detailed Implementation
[0032] 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.
[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0036] This utility model provides, for example Figures 1-5The safety rope fall arrestor shown includes a fall arrestor box 1. A connecting ring 2 is fixedly connected to the center of the upper end of the fall arrestor box 1. A rope winding cavity 3 is opened inside the fall arrestor box 1. Rope binding openings are provided at both ends of the rope winding cavity 3, and a rope outlet opening is provided at the lower end of the rope winding cavity 3. A rope winding shaft 4 is fixedly connected to the center of the inside of the rope winding cavity 3, and the rope winding shaft 4 passes through the center of the front end of the fall arrestor box 1. A rope winding handle 5 is fixedly connected to the front end of the rope winding shaft 4. A safety protection rope 6 is wound around the outside of the rope winding shaft 4, and the lower end of the safety protection rope 6 extends to the lower end of the rope winding cavity 3 through the rope outlet opening. Sensitive adjustment boxes 7 are fixedly connected to the front and rear sides of the lower end of the fall arrestor box 1, and the two sensitive adjustment boxes 7 are located on the front and rear sides of the rope outlet opening, respectively. A limit groove 8 is opened inside the two sensitive adjustment boxes 7 near the rope outlet opening, and the two limit grooves 8 are respectively connected to the two sensitive adjustment boxes. The internal structure is interconnected. The lower end of the two limiting slide grooves 8 is slidably connected to the lower locking rod 9, and the upper end of the two limiting slide grooves 8 is rotatably connected to the upper locking rod 10. The outer wall of the upper locking rod 10 is provided with a toothed groove. The lower locking rod 9 and the upper locking rod 10 are both located between the two limiting slide grooves 8. The lower end of the safety rope 6 is wrapped in an "N" shape between the lower locking rod 9 and the upper locking rod 10. The fall arrestor is fixedly connected to the safe position through the connecting ring 2. The safety rope 6 is passed through the rope outlet at the lower end of the rope winding cavity 3 and passed into the fall arrestor box 1. One end of the safety rope 6 is fixedly connected to the outside of the rope winding shaft 4. The safety rope 6 is then wrapped around the outside of the rope winding shaft 4 by rotating the rope winding handle 5. The other end of the safety rope 6 is then wrapped in an "N" shape between the lower locking rod 9 and the upper locking rod 10 and fixedly connected to the user for safety protection.
[0037] Preferably, during normal use, the user applies a relatively gentle pulling force to the safety rope 6, causing it to be pulled out of the fall arrestor box 1 at a slow speed. The upper locking bar 10 experiences less tension from the safety rope 6 and will not come too close to the lower locking bar 9, allowing the safety rope 6 to slide smoothly between the lower and upper locking bars 9 and 10, enabling it to be pulled out normally. However, in the event of a fall, the user applies a more rapid pulling force to the safety rope 6, causing it to be pulled out at a faster speed. When the upper locking rod 10 is pulled out from inside the fall arrestor box 1, it experiences a significant instantaneous tension on the safety rope 6. The upper locking rod 10 quickly slides downward between the two limiting grooves 8 and rapidly approaches the lower locking rod 9, compressing the safety rope 6. The upper locking rod 10 is locked by the toothed grooves inside its outer wall and the pressure between it and the lower locking rod 9, preventing the safety rope 6 from continuing to slide between the lower locking rod 9 and the upper locking rod 10, thus preventing the user from falling and providing protection for the user.
[0038] Preferably, the upper locking rod 10 has connecting sliders 11 at both ends, and the upper locking rod 10 passes through the two connecting sliders 11 and is rotatably connected to them. The lower locking rod 9 has support blocks 12 fixedly connected to both ends, and the two support blocks 12 are located directly below the two connecting sliders 11. The two connecting sliders 11 and the two support blocks 12 are slidably connected inside the two sensitive adjustment boxes 7. Support springs 13 are provided on both the left and right sides between the connecting sliders 11 and the support blocks 12. The connecting sliders 11 are elastically connected to the upper part of the support blocks 12 through the two support springs 13. Since the upper locking rod 10 is elastically connected to the upper side of the two support blocks 12 through the connecting sliders 11 and the support springs 13 on both sides, and the tension of the upper locking rod 10 must overcome the elastic force of the support springs 13 to approach the lower locking rod 9, the locking tension of the lower locking rod 9 and the upper locking rod 10 on the safety rope 6 is positively correlated with the elastic force of the support springs 13 on the upper locking rod 10 and the connecting sliders 11.
[0039] Preferably, an adjusting screw 14 is rotatably connected to the center of the lower end of the support block 12. The adjusting screw 14 is threadedly connected to the lower end of the sensitivity adjustment box 7, and the lower end of the adjusting screw 14 extends to the outside of the lower end of the sensitivity adjustment box 7. Since the support block 12 slides up and down through the screwing motion of the adjusting screw 14 inside the lower end of the sensitivity adjustment box 7, and the support spring 13 is located between the connecting slider 11 and the support block 12, the elastic force of the support spring 13 on the upper locking rod 10 and the connecting slider 11 can be adjusted by the up and down sliding of the support block 12. This allows the locking force of the lower locking rod 9 and the upper locking rod 10 on the safety rope 6 to be adjusted by the up and down sliding of the support block 12. This allows the sensitivity of the fall arrester to be adjusted by the screwing motion of the adjusting screw 14, enabling the fall arrester to better adapt to different usage environments and improve its application range.
[0040] Preferably, locking gears 15 are fixedly connected to the outer walls of both the front and rear sides of the upper locking rod 10, and the two locking gears 15 are rotatably connected to the two sensitive adjustment boxes 7 respectively. Buffer gears 16 are sleeved on the outer sides of both the front and rear sides of the lower locking rod 9, and the two buffer gears 16 are rotatably connected to the two sensitive adjustment boxes 7 respectively. Buffer blocks 17 are fixedly connected to the lower left outer side of each of the two buffer gears 16. An upper limit block 18 is provided at the left end of the buffer gear 16, and a lower limit block 19 is provided at the lower end of the buffer gear 16. Both the upper limit block 18 and the lower limit block 19 are fixedly connected to the outer wall of the support block 12. The buffer block 17 is rotatably connected between the upper limit block 18 and the lower limit block 19. An arc-shaped limiting slide rod 20 is fixedly connected between the upper limit block 18 and the lower limit block 19, and the limiting slide rod 20 passes through the interior of the buffer block 17 and is slidably connected to the buffer block 17. A buffer spring 21 is provided between the buffer block 17 and the upper limit block 18, and the buffer spring 21... 1. Sleeveted outside the limiting slide bar 20, while the lower locking bar 9 and upper locking bar 10 lock the safety rope 6, the locking gear 15 outside the upper locking bar 10 and the two buffer gears 16 outside the lower locking bar 9 engage with each other. When the locking gear 15 and the buffer gear 16 are engaged, the upper locking bar 10 can drive the buffer gear 16 and the buffer block 17 to rotate outside the lower locking bar 9 through the locking gear 15, and through the upper limit block 18 and the buffer spring 2 The upper locking rod 10 is subjected to tension. When the buffer spring 21 rotates to engage with the upper limit block 18, the buffer spring 21 stops rotating. At the same time, the buffer gear 16 stops rotating. The buffer gear 16 restricts the upper locking rod 10 from continuing to rotate through the locking gear 15, so that the upper locking rod 10 can lock the safety rope 6 through the tooth groove on the outer wall. This ensures that the safety rope 6 can be firmly locked between the lower locking rod 9 and the upper locking rod 10, thereby improving the safety performance of the fall arrester.
[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A safety rope fall arrestor, characterized in that, The device includes a fall arrestor box (1), a connecting ring (2) is fixedly connected to the center of the upper end of the fall arrestor box (1), a rope winding cavity (3) is opened inside the fall arrestor box (1), rope binding openings are provided at both the left and right ends of the rope winding cavity (3), and a rope outlet opening is provided at the lower end of the rope winding cavity (3), a rope winding shaft (4) is fixedly connected to the center of the inside of the rope winding cavity (3), and the rope winding shaft (4) passes through the center of the front end of the fall arrestor box (1), a rope winding handle (5) is fixedly connected to the front end of the rope winding shaft (4), a safety protection rope (6) is wound around the outside of the rope winding shaft (4), and the lower end of the safety protection rope (6) extends to the lower end of the rope winding cavity (3) through the rope outlet opening, and a sensitive adjustment box (7) is fixedly connected to both the front and rear sides of the lower end of the fall arrestor box (1), and the two sensitive adjustment boxes (7) are located on the front and rear sides of the rope outlet opening respectively.
2. The safety rope fall arrestor as described in claim 1, characterized in that, Both of the two sensitive adjustment boxes (7) have a limit groove (8) inside the end near the rope opening, and the two limit grooves (8) are respectively connected to the inside of the two sensitive adjustment boxes (7). The lower end of the two limit grooves (8) is slidably connected to a lower locking rod (9).
3. A safety rope fall arrestor as described in claim 2, characterized in that, The upper end of the two limiting slide grooves (8) is rotatably connected to the upper locking rod (10), and the outer wall of the upper locking rod (10) is provided with a toothed groove. The lower locking rod (9) and the upper locking rod (10) are both located between the two limiting slide grooves (8), and the lower end of the safety rope (6) is wrapped in an "N" shape between the lower locking rod (9) and the upper locking rod (10).
4. A safety rope fall arrestor as described in claim 3, characterized in that, The upper locking rod (10) is provided with connecting sliders (11) at both the front and rear ends, and the front and rear ends of the upper locking rod (10) pass through the two connecting sliders (11) respectively and are rotatably connected to the two.
5. A safety rope fall arrestor as described in claim 4, characterized in that, The lower locking rod (9) is fixedly connected to support blocks (12) at both ends, and the two support blocks (12) are located directly below the two connecting sliders (11). The two connecting sliders (11) and the two support blocks (12) are slidably connected inside the two sensitive adjustment boxes (7).
6. A safety rope fall arrestor as described in claim 5, characterized in that, Support springs (13) are provided on both the left and right sides between the connecting slider (11) and the support block (12), and the connecting slider (11) is elastically connected to the top of the support block (12) through the two support springs (13). An adjusting screw (14) is rotatably connected inside the lower center of the support block (12).
7. A safety rope fall arrestor as described in claim 6, characterized in that, The adjusting screw (14) is threaded inside the lower end of the sensitive adjusting box (7), and the lower end of the adjusting screw (14) extends to the outside of the lower end of the sensitive adjusting box (7). Locking gears (15) are fixedly connected to the outer walls of the front and rear sides of the upper locking rod (10), and the two locking gears (15) are respectively rotatably connected inside the two sensitive adjusting boxes (7).
8. A safety rope fall arrestor as described in claim 7, characterized in that, The lower locking rod (9) is fitted with buffer gears (16) on both the front and rear sides, and the two buffer gears (16) are rotatably connected inside the two sensitive adjustment boxes (7). The two buffer gears (16) are fixedly connected with buffer blocks (17) on the lower left side of the two buffer gears (16).
9. A safety rope fall arrestor as described in claim 8, characterized in that, The buffer gear (16) is provided with an upper limit block (18) at the left end and a lower limit block (19) at the lower end. Both the upper limit block (18) and the lower limit block (19) are fixedly connected to the outer wall of the support block (12). The buffer block (17) is rotatably connected between the upper limit block (18) and the lower limit block (19).
10. A safety rope fall arrestor as described in claim 9, characterized in that, An arc-shaped limiting slide rod (20) is fixedly connected between the upper limit block (18) and the lower limit block (19), and the limiting slide rod (20) passes through the inside of the buffer block (17) and is slidably connected with the buffer block (17). A buffer spring (21) is provided between the buffer block (17) and the upper limit block (18), and the buffer spring (21) is sleeved on the outside of the limiting slide rod (20).