Portable and reliable rigid falling protector
The lightweight rigid fall arrester stabilizes along vertical lifelines using symmetrical rollers and lock mechanisms, addressing misalignment issues and reducing material costs.
Patent Information
- Application Number
- CN202422157669.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The fallback may be offset or misaligned during sliding along the vertical lifeline, which poses safety risks.
The guide roller is symmetrically arranged, and the guide roller has no less than two rollers. The guide roller is rotatably arranged on the inner wall of the receiving groove and is fixed by a locking member, combining the wear-resistant sleeve and the torsion spring to improve stability and safety performance.
Reduce the possibility of offset or misalignment during sliding, improve the stability and safety of the fall-proof device, save production costs, and facilitate the replacement and maintenance of guide rollers.
Smart Images
Figure CN223096008U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of fall arresters, and particularly to a lightweight and reliable rigid fall arrester. Background Art
[0002] In the field of high-altitude operations, operators usually use professional safety equipment to ensure personal safety, including connecting a safety belt to a fall arrester. This fall arrester is connected to a vertical lifeline fixed at the operation site. The vertical lifeline serves as the sliding track for the fall arrester, ensuring that under normal working conditions, the fall arrester can smoothly move up or down along it to adapt to the movement needs of the operator.
[0003] When a worker is performing high-altitude operations, the fall arrester is connected to the worker through a safety belt and slides freely along the vertical lifeline. At this time, the fall arrester is in an unlocked state, allowing the worker to move freely on the vertical pole to perform necessary operation tasks. If the worker accidentally loses balance or falls, the fall arrester will immediately sense the sudden downward pulling force. At this time, the braking mechanism inside the fall arrester will quickly respond to prevent further descent by increasing the friction with the vertical lifeline or directly locking mechanism. This rapid response can significantly reduce the falling distance and impact force, thus protecting the worker from serious injuries.
[0004] During the process of the fall arrester sliding along the vertical lifeline, due to various unforeseeable external force factors (such as wind force, vibration, or irregular movements of the operator), the phenomenon of deviation or dislocation may occur. If this deviation is not effectively controlled in a timely manner, it may gradually accumulate to the critical point, ultimately resulting in the failure of the connection between the fall arrester and the vertical lifeline or even complete detachment, thus triggering serious safety accidents and posing potential safety hazards. Summary of the Utility Model
[0005] The purpose of this application is to provide a lightweight and reliable rigid fall arrester to solve the problem that the fall arrester may deviate or be misaligned during the process of sliding along the vertical lifeline, posing potential safety hazards.
[0006] The lightweight and reliable rigid fall arrester provided by this application adopts the following technical solutions:
[0007] A lightweight and reliable rigid fall arrester includes a fall arrest main body and a handle. A sliding cavity and an installation through groove communicating with the bottom side of the sliding cavity are provided on the fall arrest main body. One end of the handle is rotationally connected to the inner wall of the installation through groove through a rotating shaft, and a contact protrusion capable of turning into the sliding cavity is fixedly provided on the outer circumference of the handle near the rotating shaft; A plurality of guide rollers are symmetrically arranged on the opposite two side walls of the sliding cavity, and the number of the guide rollers on the same side wall is not less than two; The axis of the guide roller is perpendicular to the sliding direction of the fall arrest main body and parallel to the rotation plane of the handle.
[0008] By adopting the above technical solution, during the application of the anti-falling device, the anti-falling main body can reciprocally slide along the length direction of the vertical lifeline. Since the guide rollers are symmetrically arranged and there are no less than two rollers on the same side of the guide rollers, the stability of the anti-falling main body during the sliding relative to the vertical lifeline is maintained, and the possibility of deviation or dislocation during the sliding process is reduced.
[0009] Optionally, accommodation through grooves are formed on the opposite side walls of the anti-falling main body in the sliding cavity. The two end portions of the guide roller are rotatably arranged on the inner walls of the accommodation through grooves, and locking members for limiting the rotation of the guide roller are arranged on the inner walls of the accommodation through grooves.
[0010] By adopting the above technical solution, due to the arrangement of the accommodation through grooves and the locking members, the guide roller is rotatably arranged on the inner wall of the accommodation through groove, which can make more efficient use of the space of the anti-falling main body, save the raw materials required for the production of the anti-falling device, and reduce the production cost.
[0011] Optionally, the locking member is a first positioning shaft fixed on the inner wall of the accommodation through groove. A first positioning through hole for the first positioning shaft to penetrate is formed on the guide roller, and first positioning holes for the first positioning shaft to be embedded and fixed are formed on the opposite inner walls of the accommodation through groove.
[0012] By adopting the above technical solution, during the installation and fixation of the guide roller, first place the guide roller in the accommodation through groove to align the axes of the first positioning through hole and the first positioning hole, then penetrate the first positioning shaft through the first positioning through hole and the first positioning hole, embed the first positioning shaft into the first positioning hole, and make the guide roller rotatably sleeved on the outer peripheral surface of the first positioning shaft, thereby realizing the installation and fixation of the guide roller.
[0013] Optionally, a locking slot is formed on one of the opposite side walls of the accommodation through groove, and a locking jack is formed on the other side; a second positioning through hole is formed on the guide roller, and the locking member is a locking pin that penetrates the locking jack and the second positioning through hole and then inserts into the locking slot; an elastic clamping member is arranged on the outer periphery of the end portion of the locking pin, and a positioning groove for the elastic clamping member to insert is formed on the inner wall of the locking slot.
[0014] By adopting the above technical solution, during the installation and fixation of the guide roller, first place the guide roller in the accommodation through groove to align the two openings on both sides of the second positioning through hole with the locking slot and the locking jack respectively, then penetrate the locking pin through the locking jack and the second positioning through hole and insert it into the locking slot, and at the same time insert the elastic clamping member into the corresponding positioning groove, thereby realizing the installation and fixation of the guide roller; and it is convenient for the disassembly, assembly and fixation of the guide roller, and convenient for the subsequent replacement or maintenance of the guide roller.
[0015] Optionally, a wear-resistant sleeve is fixedly sleeved on the outer peripheral surface of the guide roller.
[0016] By adopting the above technical solution, due to the setting of the wear-resistant sleeve,
[0017] Optionally, annular ribs are provided on the inner wall of the wear-resistant sleeve, and annular grooves for inserting the annular ribs are formed on the outer periphery of the guide roller.
[0018] By adopting the above technical solution, the wear of the outer surface of the guide roller itself during application is reduced, and since the guide roller is easy to disassemble from the anti-falling main body, the wear-resistant sleeve can be replaced regularly.
[0019] Optionally, a torsion spring is sleeved on the outer periphery of the rotating shaft, and two ends of the torsion spring are respectively fixed to the handle and the anti-falling main body, and the torsion spring is used to keep the abutting protrusion rotating towards the sliding cavity.
[0020] By adopting the above technical solution, the force for keeping the abutting protrusion rotating towards the sliding cavity enables the abutting protrusion to tightly abut against the outer side of the vertical lifeline in the sliding cavity under normal conditions, further improving the safety performance of the anti-falling device during application.
[0021] Optionally, a receiving cavity communicating with the sliding cavity is formed in the anti-falling main body, a guide wheel rotatably arranged in the receiving cavity is provided on the side surface of the anti-falling main body, the axis of the guide wheel is perpendicular to the axis of the guide roller, and the axis of the guide wheel is parallel to the rotating surface of the handle.
[0022] By adopting the above technical solution, the stability of the anti-falling device during application is better improved.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. Since the guide rollers are symmetrically arranged and the number of rollers on the same side of the guide rollers is not less than two, the stability of the anti-falling main body during sliding relative to the vertical lifeline is maintained, and the possibility of deviation or dislocation during the sliding process is reduced.
[0025] 2. Due to the setting of the receiving through groove and the locking member, the guide roller is rotatably arranged on the inner wall of the receiving through groove, which can make more efficient use of the space of the anti-falling main body, save the raw materials required for the production of the anti-falling device, and reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0027] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present application;
[0028] Figure 2 It is a schematic cross-sectional structure diagram showing the installation and cooperation of the handle and the anti-falling main body in Embodiment 1 of the present application;
[0029] Figure 3 It is a schematic cross-sectional structure diagram showing the installation and cooperation of the guide roller in Embodiment 1 of the present application;
[0030] Figure 4 It is a schematic cross-sectional structure diagram showing the installation and cooperation of the torsion spring and the guide wheel in Embodiment 1 of the present application;
[0031] Figure 5 It is a schematic cross-sectional structure diagram of Embodiment 2 of the present application;
[0032] Figure 6 It is Figure 5 an enlarged schematic diagram of part A in
[0033] Figure 7 It is Figure 5 an enlarged schematic diagram of part B in
[0034] In the figure, 1 is the anti-falling main body; 11 is the sliding cavity; 12 is the installation through groove; 13 is the accommodation through groove; 131 is the first positioning hole; 132 is the locking slot; 1321 is the positioning groove; 133 is the locking jack; 14 is the accommodation cavity; 2 is the handle; 21 is the rotating shaft; 22 is the abutting protrusion; 23 is the torsion spring; 3 is the guide roller; 31 is the first positioning through hole; 32 is the second positioning through hole; 33 is the annular groove; 4 is the locking member; 41 is the first positioning shaft; 42 is the locking pin; 421 is the placement groove; 43 is the elastic clamping member; 431 is the compression spring; 432 is the arc-shaped convex block; 5 is the guide wheel; 51 is the rotating shaft; 6 is the wear-resistant sleeve; 61 is the annular rib. Detailed implementation manners
[0035] The following further elaborates on the present application in conjunction with all the drawings.
[0036] Embodiment 1:
[0037] Refer to Figure 1 and Figure 2, A lightweight and reliable rigid anti-falling device, including an anti-falling main body 1 and a handle 2. A sliding cavity 11 and an installation through groove 12 communicating with the bottom side of the sliding cavity 11 are provided on the anti-falling main body 1. One end of the handle 2 is rotatably connected to the inner wall of the installation through groove 12 through a rotating shaft 21. An abutting protrusion 22 capable of turning into the sliding cavity 11 is fixedly provided on the outer circumference of the handle 2 close to the rotating shaft 21; A number of guide rollers 3 are symmetrically arranged on the opposite two side walls of the sliding cavity 11, and the number of guide rollers 3 on the same side wall is two; After the guide rollers 3 are installed, the axis of the guide rollers 3 is perpendicular to the sliding direction of the anti-falling main body 1 and parallel to the rotation plane of the handle 2;
[0038] When this anti-falling device is applied, the vertical lifeline is fixedly arranged on the ground or other surfaces in the vertical direction, and then the vertical lifeline is placed in the sliding cavity 11. Then the anti-falling main body 1 can reciprocally slide along the length direction of the vertical lifeline; When the staff suddenly falls, under the action of their own gravity, the abutting protrusion 22 on the handle 2 abuts tightly against the outer side surface of the vertical lifeline in the sliding cavity 11, thereby slowing down or even stopping the fall.
[0039] Refer to Figure 3 , The anti-falling main body 1 is provided with accommodation through grooves 13 on the opposite two side walls of the sliding cavity 11. The two ends of the guide rollers 3 are rotatably arranged on the inner walls of the accommodation through grooves 13. A locking member 4 for limiting the rotation of the guide rollers 3 is arranged on the inner wall of the accommodation through grooves 13; In this way, the raw materials required for the production of this anti-falling device are saved, and the production cost is reduced.
[0040] Refer to Figure 3 , The locking member 4 is a first positioning shaft 41 fixedly arranged on the inner wall of the accommodation through groove 13. A first positioning through hole 31 for the first positioning shaft 41 to penetrate is provided on the guide roller 3. First positioning holes 131 for the first positioning shaft 41 to be embedded and fixed are provided on the opposite two side walls of the accommodation through groove 13; The guide roller 3 is rotatably sleeved on the outer peripheral surface of the first positioning shaft 41, thereby realizing the installation and fixation of the guide roller 3.
[0041] Refer to Figure 3 and Figure 4 , The anti-falling main body 1 is provided with a receiving cavity 14 communicating with the sliding cavity 11. A guide wheel 5 rotatably arranged in the receiving cavity 14 is provided on the side surface of the anti-falling main body 1 through a rotating shaft 51. The axis of the guide wheel 5 is perpendicular to the axis of the guide roller 3, and the axis of the guide wheel 5 is parallel to the rotation plane of the handle 2, thereby better improving the stability of the anti-falling device during application.
[0042] Refer to Figure 4, a torsion spring 23 is sleeved on the outer periphery of the rotating shaft 21. The two ends of the torsion spring 23 are respectively fixed to the handle 2 and the anti-falling main body 1. The torsion spring 23 is used to keep the abutting protrusion 22 rotating towards the direction close to the sliding cavity 11, so that the abutting protrusion 22 can tightly abut against the outer side surface of the vertical lifeline in the sliding cavity 11 under normal conditions, further improving the safety performance of the anti-falling device during application.
[0043] The implementation principle of the embodiment of the present application is as follows:
[0044] During the application of the anti-falling device, due to the cooperative arrangement of the guide wheel 5 and multiple groups of guide rollers 3, the anti-falling main body 1 can reciprocally slide along the length direction of the vertical lifeline, reducing the possibility of deviation or dislocation during the sliding process;
[0045] During normal application, the staff can release the abutting of the abutting protrusion 22 against the vertical lifeline and can move up and down normally; when the staff suddenly falls, under the action of their own gravity, the abutting protrusion 22 on the handle 2 abuts tightly against the outer side surface of the vertical lifeline in the sliding cavity 11, thereby slowing down or even stopping the fall.
[0046] Embodiment 2:
[0047] Referring to Figure 5 , the difference between the embodiment of the present application and Embodiment 1 is that the locking member 4 is a locking pin 42; a locking slot 132 is opened on one of the opposite side walls of the accommodating through groove 13, and a locking hole 133 is opened on the other side; a second positioning through hole 32 is opened on the guide roller 3; the locking pin 42 passes through the locking hole 133 and the second positioning through hole 32 and then is inserted into the locking slot 132, and the guide roller 3 is rotatably sleeved outside the locking pin 42.
[0048] Referring to Figure 5 and Figure 6 , an elastic clamping member 43 is provided on the outer periphery of the end of the locking pin 42. The elastic clamping member 43 includes a compression spring 431 and an arc-shaped convex block 432. A placement groove 421 for placing the compression spring 431 and the arc-shaped convex block 432 is opened on the outer side surface of the locking pin 42. The compression spring 431 presses the arc-shaped convex block 432, so that a part of the arc-shaped convex block 432 protrudes from the placement groove 421, and the protruding part of the arc-shaped convex block 432 is an arc surface, and the arc length corresponding to the arc surface is a minor arc. At the same time, a positioning groove 1321 for the arc-shaped convex block 432 to protrude and insert is opened on the inner wall of the locking slot 132, so as to improve the installation stability of the locking pin 42.
[0049] Referring to Figure 5 and Figure 7, a wear-resistant sleeve 6 made of rubber is sleeved on the outer peripheral surface of the guide roller 3. An annular rib 61 is integrally formed on the inner wall of the wear-resistant sleeve 6, and an annular groove 33 for inserting the annular rib 61 is formed on the outer periphery of the guide roller 3, so as to reduce the wear of the outer surface of the guide roller 3 during application. Moreover, since the guide roller 3 is easy to disassemble from the anti-falling main body 1, the wear-resistant sleeve 6 can be replaced regularly.
[0050] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meanings understood by those with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in the text of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The words such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. The words such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. The "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.
[0051] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.
Claims
1. A portable and reliable rigid anti-falling device, comprising an anti-falling main body (1) and a handle (2). A sliding cavity (11) and an installation through groove (12) communicating with the bottom side of the sliding cavity (11) are formed on the anti-falling main body (1). One end of the handle (2) is rotatably connected to the inner wall of the installation through groove (12) through a rotating shaft (21). An abutting protrusion (22) capable of turning into the sliding cavity (11) is fixedly arranged on the outer periphery of the handle (2) near the rotating shaft (21). It is characterized in that A number of guide rollers (3) are symmetrically arranged on the opposite two side walls of the sliding cavity (11). The number of the guide rollers (3) on the same side wall is not less than two. The axis of the guide roller (3) is perpendicular to the sliding direction of the anti-falling main body (1) and parallel to the rotating surface of the handle (2).
2. The portable and reliable rigid fall arrester according to claim 1, characterized in that, Accommodation through grooves (13) are formed on the anti-falling main body (1) on the opposite two side walls of the sliding cavity (11). Both ends of the guide roller (3) are rotatably arranged on the inner wall of the accommodation through groove (13). A locking member (4) for limiting the rotation of the guide roller (3) is arranged on the inner wall of the accommodation through groove (13).
3. The portable and reliable rigid anti-falling device according to claim 2, wherein The locking member (4) is a first positioning shaft (41) fixedly arranged on the inner wall of the accommodation through groove (13). A first positioning through hole (31) for the first positioning shaft (41) to penetrate is formed on the guide roller (3). First positioning holes (131) for the first positioning shaft (41) to be embedded and fixed are formed on the opposite two inner walls of the accommodation through groove (13).
4. A portable and reliable rigid fall arrester according to claim 2, characterized in that A locking slot (132) is formed on one of the opposite two side walls of the accommodation through groove (13), and a locking hole (133) is formed on the other side. A second positioning through hole (32) is formed on the guide roller (3). The locking member (4) is a locking pin (42) that penetrates through the locking hole (133) and the second positioning through hole (32) and then inserts into the locking slot (132). An elastic clamping member (43) is formed on the outer periphery of the end of the locking pin (42). A positioning groove (1321) for the elastic clamping member (43) to insert is formed on the inner wall of the locking slot (132).
5. A portable and reliable rigid anti-falling device according to claim 4, characterized in that, A wear-resistant sleeve (6) is sleeved on the outer peripheral surface of the guide roller (3).
6. The portable and reliable rigid anti-falling device according to claim 5, characterized in that, An annular rib (61) is arranged on the inner wall of the wear-resistant sleeve (6). An annular groove (33) for the annular rib (61) to insert is formed on the outer periphery of the guide roller (3).
7. A lightweight and reliable rigid anti-falling device according to claim 1, characterized in that, A torsion spring (23) is sleeved on the outer periphery of the rotating shaft (21). Both ends of the torsion spring (23) are fixed to the handle (2) and the anti-falling main body (1) respectively. The torsion spring (23) is used to keep the abutting protrusion (22) rotating towards the direction close to the sliding cavity (11).
8. A portable and reliable rigid anti-falling device according to claim 1, characterized in that, An accommodating cavity (14) communicating with the sliding cavity (11) is formed on the anti-falling main body (1). A guide wheel (5) rotatably arranged in the accommodating cavity (14) is arranged on the side surface of the anti-falling main body (1). The axis of the guide wheel (5) is perpendicular to the axis of the guide roller (3), and the axis of the guide wheel (5) is parallel to the rotating surface of the handle (2).