Rail type safety falling protector
By designing a track-type safety fall arrestor, utilizing guide rails and roller structures, combined with elastic brake blocks for synchronous clamping, the problem of instability in existing fall arrestors is solved, achieving rapid and stable braking and flexible movement safety assurance for high-altitude operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ANJIU ELECTRIC POWER EQUIPMENT CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-05-19
AI Technical Summary
Existing fall arrestors mostly use a single-point braking and clamping method, which is not secure enough and cannot effectively guarantee safety during high-altitude operations.
Design a track-type safety fall arrestor, which adopts a guide rail and a roller structure inside the shell. The safety rope pulls the traction block, which drives four brake blocks to press against both sides of the guide rail simultaneously. Combined with elastic elements, the brake blocks are provided with elastic force to ensure a fast and stable braking effect.
It enables rapid and stable braking in the event of a technician's fall, ensuring the safety of high-altitude operations, and allows for flexible movement when needed.
Smart Images
Figure CN224251967U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-altitude safety equipment technology, and in particular to a track-type safety fall arrestor. Background Technology
[0002] In high-altitude operations such as high-voltage power transmission, technicians need to climb towers and other high-altitude locations to perform operations. During these operations, they need to move up and down and perform other actions, posing a risk of falling. Existing fall arrestors mostly use a single-point braking mechanism, which is not secure enough. Utility Model Content
[0003] The purpose of this utility model is to provide a track-type safety fall arrestor to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: A track-type safety fall arrestor includes a guide track with guide grooves on both the left and right sides, and a housing, a first rod, and a second rod. First rollers embedded in the corresponding guide grooves are installed on both the left and right sides inside the housing. The middle parts of the first rod and the middle parts of the second rod are rotatably mounted on the front side inside the housing, and brake blocks are installed at the ends of both the first rod and the second rod. A third rod is rotatably mounted on the bottom of the first rod, and a fourth rod is rotatably mounted on the bottom of the second rod. A traction block connected to a safety rope is rotatably connected to the bottom of the third rod and the bottom of the fourth rod. When the safety rope pulls the traction block, the traction block simultaneously pulls the third rod and the fourth rod, causing the first rod and the second rod to rotate synchronously and crosswise, thereby causing the four brake blocks to simultaneously press against the left and right sides of the guide track in pairs.
[0005] This technical solution has at least the following beneficial effects: When a technician falls, the safety rope pulls the traction block, and under the transmission action of the first, second, third and fourth rods, pulls the two brake blocks on both sides to press against the left and right sides of the guide rail. When gravity pulls the traction block downward, the brake blocks on both sides can clamp the guide rail, thereby achieving rapid braking. After stopping, the brakes are very stable, ensuring the safety of the technician when he is accidentally suspended in the air.
[0006] As a further improvement to the above technical solution, an elastic element is installed between the first rod and the second rod, and the elastic element provides an elastic force to move the brake block away from the corresponding side wall of the guide rail.
[0007] As a further improvement to the above technical solution, the elastic element is a helical spring with its two ends connected to the first rod and the second rod respectively, and the axis of the helical spring is an arc.
[0008] As a further improvement to the above technical solution, two helical springs are provided, with the two helical springs positioned above and below the center of rotation of the first rod and the second rod, respectively.
[0009] As a further improvement to the above technical solution, the elastic element is a torsion spring, with its two ends connected to the first rod and the second rod respectively, and the torsion center of the torsion spring being the same as the cross rotation center of the first rod and the second rod.
[0010] As a further improvement to the above technical solution, support frames are respectively installed at the upper and lower positions of the front side inside the housing, and the support frames are rotatably mounted with second rollers that can abut against the front side of the guide rail.
[0011] As a further improvement to the above technical solution, a plurality of the second rollers are rotatably mounted side by side in a support frame.
[0012] As a further improvement to the above technical solution, the first rod and the second rod are of the same length, the third rod and the fourth rod are of the same length, and the third rod is shorter than the second rod.
[0013] As a further improvement to the above technical solution, the traction block is equipped with a ring-shaped hook.
[0014] As a further improvement to the above technical solution, inner buckle plates embedded in the guide grooves are installed on both the left and right sides of the housing. Attached Figure Description
[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the shell in an embodiment of the present utility model;
[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of an embodiment of the present utility model.
[0019] 100. Guide rail; 110. Guide groove; 200. Housing; 210. First roller; 220. Inner buckle plate; 300. First rod; 310. Second rod; 400. Brake block; 500. Third rod; 510. Fourth rod; 600. Traction block; 610. Ring hook; 700. Helical spring; 800. Support frame; 810. Second roller. Detailed Implementation
[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0024] Reference Figure 1-3 The track-type safety fall arrestor includes a guide rail 100 and a housing 200. Guide grooves 110 are symmetrically formed on both sides of the guide rail 100, giving it an I-shaped cross-section. The housing 200 has a U-shaped cross-section and is fitted onto the front of the guide rail 100. Two first rollers 210 are installed on each of the left and right sides inside the housing 200, with the two first rollers 210 on the same side spaced longitudinally. The rotation axis of the first rollers 210 is parallel to the depth direction of the guide grooves 110, and the first rollers 210 on each side are embedded in the corresponding guide grooves 110, meaning the rolling surface of the first rollers 210 abuts against the front wall of the guide grooves 110. This allows the housing 200 to slide on the guide rail 100 without derailing. Inner buckle plates 220 extend in opposite directions on both rear sides of the housing 200. The inner buckle plates 220 are embedded in the guide grooves 110 and are integrally formed with the housing 200, which further prevents the housing 200 from falling off the guide track 100 and improves safety.
[0025] The housing 200 contains a first rod 300 and a second rod 310. The middle portions of the first rod 300 and the second rod 310 intersect and rotate together on the front side wall inside the housing 200. Crossbars are installed at both ends of the first rod 300 and both ends of the second rod 310, and brake blocks 400 are installed at the ends of the crossbars. To improve strength, reinforcing ribs are provided between the crossbars and the first rod 300 and the second rod 310. The two brake blocks 400 at both ends of the first rod 300 are distributed on the left and right sides of the guide rail 100, respectively. Similarly, the two brake blocks 400 at both ends of the second rod 310 are also distributed on the left and right sides of the guide rail 100. In other words, two of the four brake blocks 400 are located on the left side of the guide rail 100, and the other two are located on the right side.
[0026] A third rod 500 is rotatably mounted on the bottom of the first rod 300, and a fourth rod 510 is rotatably mounted on the bottom of the second rod 310. The end of the third rod 500 away from the first rod 300 is rotatably connected to the end of the fourth rod 510 away from the second rod 310, and a traction block 600 is mounted on the rotation center of the third rod 500 and the fourth rod 510. The rotation center line of the third rod 500 relative to the traction block 600 coincides with the rotation center line of the fourth rod 510 relative to the traction block 600.
[0027] A ring hook 610 is installed at the bottom of the traction block 600. The ring hook 610 is positioned towards the front of the housing 200 and extends out of the housing 200 from the bottom, that is, the ring hook 610 is exposed on the outside of the housing 200, so that the safety rope can be connected to the ring hook 610.
[0028] The length of the first rod 300 is the same as the length of the second rod 310, and the length of the third rod 500 is the same as the length of the fourth rod 510. The length of the first rod 300 is longer than the length of the third rod 500. Passing the safety rope through the loop hook 610 makes it easy to connect the safety rope to the traction block 600.
[0029] When the safety rope is pulled down, the traction block 600 is also pulled down, causing the first and second rods 300 and 310 to rotate synchronously and crosswise via the third rod 500 and the fourth rod 510. This causes all four brake blocks 400 to clamp and press against the left and right sides of the guide rail 100, firmly fixing the housing 200 in its current position on the guide rail. This allows for rapid braking of the housing 200, and the housing remains very stable after stopping, ensuring the safety of technicians in case of accidental suspension. It should be noted that when technicians need to move, they can push the housing 200 to prevent it from being pulled on the traction block 600 during normal work, thus ensuring the technicians' normal work and safety.
[0030] Furthermore, when the first rod 300 and the second rod 310 are installed in a cross-rotational configuration, the first rod 300 is positioned in front of the second rod 310, the third rod 500 is positioned behind the first rod 300, and the fourth rod 510 is positioned in front of the second rod 310 and the third rod 510 is positioned in front of the third rod 500. That is, the first rod 300 and the fourth rod 510 are on the same vertical plane, and the second rod 310 and the third rod 500 are on the same vertical plane. This results in a thinner overall thickness formed by the first rod 300, the second rod 310, the third rod 500, and the fourth rod 510, leading to a smaller overall volume of the housing 200, more flexible movement, and less impact on operator skills. It should be noted that when the first rod 300 and the third rod 500 intersect at the same position relative to the side wall of the guide rail 100, the brake block 400 can be installed on the third rod 500.
[0031] In other embodiments, the third rod 500 may also be positioned in front of the first rod 300, with the third rod 500 positioned in front of the fourth rod 510. In other embodiments, the center line of rotation of the third rod 500 relative to the traction block 600 and the center line of rotation of the fourth rod 510 relative to the traction block 600 may not coincide, but may be parallel to each other on the same horizontal plane.
[0032] An elastic element is installed between the first rod 300 and the second rod 310. This elastic element provides a spring force that pulls the brake block 400 away from the side wall of the guide rail 100. In other words, the elastic element can push the first rod 300 and the second rod 310 apart to the left and right, thus temporarily preventing the corresponding brake block 400 from contacting the side wall of the guide rail 100, facilitating the movement of the housing 200 and allowing technicians to move and work normally. In the event of a fall by the technician, the force of gravity, which is much greater than the spring force of the elastic element, can quickly cause the brake block 400 to press against the side wall of the guide rail 100, thereby ensuring the safety of the technician.
[0033] Specifically, the elastic element is a helical spring 700. One end of the helical spring 700 is welded to the first rod 300, and the other end is welded to the second rod 310, so that the two ends of the helical spring 700 can open the first rod 300 and the second rod 310 to keep the brake block 400 from contacting the guide rail 100 temporarily.
[0034] In this embodiment, the helical axis of the helical spring 700 is an arc, and the center of the circumference of this arc is located at the same position as the intersection rotation center of the first rod 300 and the second rod 310. This allows the two ends of the helical spring 700 to be stably compressed and deformed by the first rod 300 and the second rod 310. In this embodiment, two helical springs 700 are provided, symmetrically installed above and below the intersection rotation center of the first rod 300 and the second rod 310, respectively.
[0035] In other embodiments, the elastic element can also be a torsion spring, with the middle part of the torsion spring disposed on the pivot where the first rod 300 and the second rod 310 rotate crosswise, so that the torsion center position of the torsion spring is the same as the cross rotation center position of the first rod 300 and the second rod 310. The two elastic ends of the torsion spring are respectively fixed on the first rod 300 and the second rod 310, so that the two elastic ends of the torsion spring can spread the first rod 300 and the second rod 310 apart, so as to keep the brake block 400 temporarily from contacting the guide rail 100.
[0036] Furthermore, two U-shaped support frames 800 are installed on the front side inside the housing 200. The two support frames 800 are vertically spaced and positioned above and below the two helical springs 700, respectively. The width of the support frame 800 is less than the shortest rotation distance between the first rod 300 and the second rod 310 on the left and right sides, thereby ensuring that the rotational movement of the first rod 300 and the second rod 310 does not interfere with the support frame 800.
[0037] A second roller 810 is rotatably mounted on the support frame 800. The rotation center line of the second roller 810 is parallel to the horizontal line on the front side of the guide rail 100, and the rolling surface of the second roller 810 abuts against the front side of the guide rail 100, thereby improving the guiding mobility of the housing 200. Four second rollers 810 are rotatably mounted on one support frame 800. In other embodiments, one, two, three, five, or six second rollers 810 may also be rotatably mounted on one support frame 800.
[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A track-type safety fall arrestor, characterized in that, The system includes a guide rail with guide grooves on both the left and right sides, a housing, a first rod, and a second rod. First rollers, embedded in the corresponding guide grooves, are installed on both the left and right sides inside the housing. The middle portions of the first and second rods are rotatably mounted on the front side of the housing, and brake blocks are installed at the ends of both rods. A third rod is rotatably mounted on the bottom of the first rod, and a fourth rod is rotatably mounted on the bottom of the second rod. A traction block connected to a safety rope is rotatably connected to the bottom of the third and fourth rods. When the safety rope pulls the traction block, the traction block simultaneously pulls the third and fourth rods, causing the first and second rods to rotate synchronously and crosswise, thereby causing the four brake blocks to press against the left and right sides of the guide rail in pairs.
2. The track-type safety fall arrestor according to claim 1, characterized in that: An elastic element is installed between the first rod and the second rod, the elastic element providing a spring force to move the brake block away from the corresponding sidewall of the guide rail.
3. The track-type safety fall arrestor according to claim 2, characterized in that: The elastic element is a helical spring with its two ends connected to the first rod and the second rod respectively, and the axis of the helical spring is an arc.
4. The track-type safety fall arrestor according to claim 3, characterized in that: Two helical springs are provided, with the two helical springs positioned above and below the center of rotation of the first and second rods, respectively.
5. A track-type safety fall arrestor according to claim 2, characterized in that: The elastic element is a torsion spring, with its two ends connected to the first rod and the second rod respectively. The torsion center of the torsion spring is at the same position as the cross rotation center of the first rod and the second rod.
6. The track-type safety fall arrestor according to claim 1, characterized in that: Support frames are installed at the upper and lower positions of the front side inside the housing, and the support frames are rotatably mounted with second rollers that can abut against the front side of the guide rail.
7. A track-type safety fall arrestor according to claim 6, characterized in that: A plurality of the second rollers are rotatably mounted side-by-side in a support frame.
8. The track-type safety fall arrestor according to claim 1, characterized in that: The first and second rods are of the same length, the third and fourth rods are of the same length, and the third rod is shorter than the second rod.
9. A track-type safety fall arrestor according to claim 1, characterized in that: The traction block is equipped with a ring-shaped hook.
10. A track-type safety fall arrestor according to claim 1, characterized in that: Both the left and right sides of the housing are fitted with inner buckle plates that are embedded in the guide grooves.