Anti-falling self-locking device
By designing an anti-fall self-locker, the dual limiting mechanism of the guide wheel and cam structure is used to solve the problem of the self-locker being disengaged from the guide rail, achieving a more efficient safety protection effect.
Patent Information
- Application Number
- CN202421380335.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the prior art, disengagement between the self-locker and the guide rail is prone to occur, resulting in the self-locker failure and unable to effectively protect the safety of the staff.
A self-locker anti-fall is designed, including a mounting frame, a guide wheel group, a cam structure and a rotating arm. The contact between the guide wheel and the transverse track and the friction surface of the cam structure and the transverse track are formed to ensure stable clamping between the self-locker and the T-shaped guide rail.
It effectively prevents the self-locker from disengaging from the T-shaped guide rail, increases friction in accidental falls, reduces the movement speed of the mounting frame, and improves the safety protection effect of the staff.
Smart Images
Figure CN222752451U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power transmission line maintenance, and more specifically relates to an anti-falling self-locking device. Background Art
[0002] During the maintenance of overhead power transmission lines, climbing pole towers is the first task that must be faced. However, the currently operating line towers do not have safety protection measures for workers. Due to the high height of the towers, workers will consume a lot of physical strength during the climbing process, and the lack of anti-fall protection measures will cause great psychological pressure on the workers. At present, workers use safety ropes and self-locking devices when climbing poles. In the event of an accidental fall, the safety ropes and self-locking devices can generate a certain amount of resistance to the workers, thereby achieving the purpose of protecting the workers. However, this self-locking device is prone to detachment from the guide rail, causing the self-locking device to fail. Utility Model Content
[0003] The utility model aims to provide a fall prevention self-locking device to solve the technical problem in the prior art that the self-locking device and the guide rail are easily separated, resulting in failure of the self-locking device.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide an anti-fall self-locking device, comprising:
[0005] The mounting frame has a mounting groove at the lower end for mounting with the T-shaped guide rail, and the mounting groove runs through the mounting frame; the upper end surface of the mounting frame is provided with a long groove connected to the mounting groove;
[0006] There are two guide wheel groups, which are rotatably connected to the two opposite side walls of the mounting groove, and the axial direction of the guide wheel is perpendicular to the length direction of the T-shaped guide rail; an accommodation spacing for accommodating the transverse track of the T-shaped guide rail is provided between the guide wheel group and the top surface of the mounting groove, and the guide wheel is used to contact the lower end surface of the transverse track;
[0007] A cam structure is installed in the installation groove and is rotatably connected to the installation frame; the axial direction of the cam structure is perpendicular to the length direction of the T-shaped guide rail and is located above the T-shaped guide rail; the cam structure is provided with a friction surface for contacting the upper end surface of the transverse track;
[0008] A rotating arm is inserted into the long groove, one end of which is fixedly connected to the cam structure and the other end of which is located outside the mounting frame; the other end of the rotating arm is used to be connected to a safety rope.
[0009] In a possible implementation, the anti-fall self-locking device also includes two support wheel groups rotatably connected to the two side walls opposite to the mounting groove, the support wheel is located above the guide wheel, and the axial direction is parallel to the axial direction of the guide wheel; the support wheel and the guide wheel are used to accommodate the accommodating spacing of the transverse rail, and the support wheel is in contact with both sides of the upper end surface of the transverse rail.
[0010] In a possible implementation, grooves are provided on both side walls of the mounting groove, the grooves are located between the guide wheel and the support wheel, the guide wheel is rotatably connected in the grooves, and the axial direction of the guide wheel is perpendicular to the axial direction of the guide wheel and the length direction of the T-shaped guide rail; the outer side surface of the guide wheel is used to contact the side surface of the transverse rail.
[0011] In a possible implementation, the mounting frame includes a top plate and two side plates respectively fixedly mounted on both sides of the top plate, the two side plates and the top plate forming the mounting groove; the guide wheel is rotatably connected to the corresponding side plate, and the cam structure is rotatably connected to the two side plates; the long groove is opened on the top plate.
[0012] In a possible implementation, the mounting frame further includes a connecting beam installed between the two side panels, and two ends of the connecting beam are fixedly connected to the two side panels.
[0013] In a possible implementation, the other end of the rotating arm is provided with a connecting hole for connecting with a safety rope.
[0014] In a possible implementation, the guide wheel is a bevel wheel with a slope of 9-10 degrees.
[0015] In a possible implementation, the guide wheel is made of nylon.
[0016] In a possible implementation, the cam structure is provided with a rotating shaft rotatably connected to the mounting frame, and the anti-fall self-locking device also includes a locking mechanism fixedly mounted on one side of the mounting frame, one end of the rotating shaft passes through the mounting frame and is connected to the locking mechanism, and the locking mechanism is used to limit and lock the rotating shaft and open the rotation.
[0017] In a possible implementation, the locking mechanism includes an installation box, a limit block slidably connected to the installation box, and a push-pull rod connected to the limit block; a connecting port is provided on a side of the installation box close to the installation frame, and a sliding hole is provided on one end face, one end of the rotating shaft passes through the connecting port and is located in the installation box, one end of the rotating shaft is provided with a limit groove, the limit block is provided with a limit protrusion that is installed in cooperation with the limit groove, and the limit protrusion is slidably connected to the limit groove; the push-pull rod is slidably connected to the sliding hole.
[0018] The beneficial effect of the anti-fall self-locking device provided by the utility model is that compared with the prior art, the anti-fall self-locking device of the utility model, when used, the mounting frame is mounted on the T-shaped guide rail, and the transverse track on the T-shaped guide rail is located in the accommodation spacing in the mounting groove, wherein the guide wheel is located below the transverse track and contacts with the lower end surface of the transverse track, and the cam structure arranged in the mounting groove is located above the transverse track, and the rotating arm passes through the long groove and is located on the outside of the mounting frame; in the event of an accidental fall, the safety rope pulls the rotating arm to rotate downward, and the rotating arm drives the cam structure to rotate in the mounting groove, and the friction surface on the cam structure contacts with the upper end surface of the transverse track, thereby forming a large friction force, so that the downward movement speed of the mounting frame is reduced, thereby achieving the purpose of protecting the staff; in this way, the transverse track of the T-shaped guide rail is clamped between the cam structure and the guide wheel, and the transverse track is located inside the mounting frame, so that a double limit is formed between the self-locking device and the T-shaped guide rail, effectively preventing the self-locking device from detaching from the T-shaped guide rail. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0020] Figure 1 The structure diagram of the anti-fall self-locking device provided by the embodiment of the utility model Figure 1 ;
[0021] Figure 2 The structure diagram of the anti-fall self-locking device provided by the embodiment of the utility model Figure 2 ;
[0022] Figure 3 A schematic diagram of the internal structure of the anti-fall self-locking device provided in an embodiment of the utility model;
[0023] Figure 4A schematic diagram of the connection between the cam structure and the rotating arm provided in an embodiment of the utility model;
[0024] Figure 5 A schematic diagram of an anti-fall self-locking device provided in an embodiment of the utility model installed on a T-shaped guide rail.
[0025] Among them, the reference numerals in the figure are:
[0026] 1. Mounting frame; 11. Mounting slot; 12. Long slot; 13. Groove; 14. Guide wheel; 15. Top plate; 16. Side plate; 2. Guide wheel; 21. Accommodation spacing; 3. Cam structure; 31. Friction surface; 32. Rotating shaft; 33. Limiting slot; 4. Rotating arm; 41. Connecting hole; 5. Support wheel; 6. Locking mechanism; 61. Mounting box; 62. Limiting block; 63. Push-pull rod; 64. Limiting protrusion; 65. Sliding hole; 7. T-type guide rail; 71. Horizontal rail. DETAILED DESCRIPTION
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0031] See also Figures 1 to 5The anti-fall self-locking device provided by the utility model is now described. An anti-fall self-locking device includes a mounting frame 1, a guide wheel group 2, a cam structure 3 and a rotating arm 4. The lower end of the mounting frame 1 has a mounting groove 11 for mounting with a T-shaped guide rail 7, and the mounting groove 11 runs through the mounting frame 1; the upper end surface of the mounting frame 1 is provided with a long groove 12 connected to the mounting groove 11; the number of the guide wheel group 2 is two, which are rotatably connected to the opposite side walls of the mounting groove 11, and the axial direction of the guide wheel 2 is perpendicular to the length direction of the T-shaped guide rail 7; a transverse groove 12 for accommodating the T-shaped guide rail 7 is provided between the guide wheel group 2 and the top surface of the mounting groove 11. The cam structure 3 is installed in the mounting groove 11 and is rotatably connected to the mounting frame 1; the axial direction of the cam structure 3 is perpendicular to the length direction of the T-shaped guide rail 7 and is located above the T-shaped guide rail 7; the cam structure 3 is provided with a friction surface 31 for contacting the upper end surface of the transverse rail 71; the rotating arm 4 is penetrated in the long groove 12, and one end is fixedly connected to the cam structure 3, and the other end is located outside the mounting frame 1; the other end of the rotating arm 4 is used to be connected to the safety rope.
[0032] Compared with the prior art, the anti-fall self-locking device provided by the utility model is used in that the mounting frame 1 is mounted on the T-shaped guide rail 7, and the transverse track 71 on the T-shaped guide rail 7 is located in the accommodation spacing 21 in the mounting groove 11, wherein the guide wheel 2 is located below the transverse track 71 and contacts the lower end surface of the transverse track 71, and the cam structure 3 arranged in the mounting groove 11 is located above the transverse track 71, and the rotating arm 4 passes through the long groove 12 and is located outside the mounting frame 1; in the event of an accidental fall, the safety rope pulls the rotating arm 4 downward The cam structure 3 is driven by the rotating arm 4 to rotate in the mounting groove 11, and the friction surface 31 on the cam structure 3 contacts the upper end surface of the transverse track 71, thereby forming a large friction force, which reduces the downward movement speed of the mounting frame 1 and achieves the purpose of protecting the staff; in this way, the transverse track 71 of the T-shaped guide rail 7 is clamped between the cam structure 3 and the guide wheel 2, and the transverse track 71 is located inside the mounting frame 1, so that a double limit is formed between the self-locking device and the T-shaped guide rail 7, effectively preventing the self-locking device from detaching from the T-shaped guide rail 7.
[0033] The T-shaped guide rail 7 includes a transverse track 71 and a longitudinal track arranged perpendicularly thereto. The longitudinal track is used to be fixed on a transmission line tower or a pole; the self-locking device moves along the transverse track 71. With the characteristics of the cam structure 3 itself, when the rotating arm 4 drives it to rotate, the friction surface 31 on the cam structure 3 and the upper end surface of the transverse track 71 form an extrusion effect, so that there is a large friction force between the cam structure 3 and the T-shaped guide rail 7. The T-shaped guide rail 7 is a T36 guide rail; the mounting frame 1 is made of 7 series aluminum alloy material.
[0034] See also Figures 1 to 3 The cam 72 is a kind of camshaft that is used for the rotation of the support wheel 5 and the guide wheel 2, and the cam 72 is a kind of camshaft that is used for the rotation of the support wheel 5 and the guide wheel 2. As a specific embodiment of the anti-fall self-locking device provided by the utility model, the anti-fall self-locking device also includes two support wheel 5 groups that are rotatably connected to the two side walls opposite to the mounting groove 11, and the support wheel 5 is located above the guide wheel 2, and the axial direction is parallel to the axial direction of the guide wheel 2; the support wheel 5 and the guide wheel 2 are used to accommodate the accommodating spacing 21 of the transverse rail 71, and the support wheel 5 is in contact with both sides of the upper end surface of the transverse rail 71; the two support wheel 5 groups correspond to the two guide wheel 2 groups one by one, and are arranged at intervals up and down; an accommodating spacing 21 is formed between the support wheel 5 groups and the guide wheel 2 groups, so that when in use, the transverse rail 71 of the T-shaped guide rail 7 is located between the plurality of guide wheels 2 and the plurality of support wheels 5, the guide wheel 2 is in contact with the lower end surface of the transverse rail 71, and the support wheel 5 is in contact with the upper end surface of the transverse rail 71, so that the self-locking device can move more smoothly on the T-shaped guide rail 7, and the self-locking device is less likely to disengage under the clamping action of the support wheel 5 and the guide wheel 2. Each support wheel group 5 includes three support wheels 5 , and each guide wheel group 2 includes three guide wheels 2 .
[0035] See also Figures 1 to 3 As a specific embodiment of the anti-fall self-locking device provided by the utility model, grooves 13 are provided on the two side walls of the installation groove 11, and the grooves 13 are located between the guide wheel 2 and the support wheel 5. The guide wheel 14 rotatably connected in the groove 13, the axial direction of the guide wheel 14 is perpendicular to the axial direction of the guide wheel 2 and the length direction of the T-shaped guide rail 7; the outer side surface of the guide wheel 14 is used to contact the side surface of the transverse rail 71; grooves 13 are provided on the two side walls of the installation groove 11, and the grooves 13 correspond to the side surfaces of the transverse rail 71; the guide wheels 14 are rotatably connected in the grooves 13, and the guide wheels 14 on both sides of the installation groove 11 are respectively in contact with the two sides of the transverse rail 71; during the sliding process of the self-locking device on the T-shaped guide rail 7, the guide wheels 14 on both sides of the installation groove 11 form a limit between the self-locking device and the T-shaped guide rail 7 to ensure that the self-locking device moves accurately without getting stuck.
[0036] See also Figures 1 to 3 As a specific embodiment of the anti-fall self-locking device provided by the utility model, the mounting frame 1 includes a top plate 15 and two side plates 16 respectively fixedly mounted on both sides of the top plate 15, and the two side plates 16 and the top plate 15 form a mounting groove 11; the guide wheel 2 is rotatably connected to the corresponding side plate 16, and the cam structure 3 is rotatably connected to the two side plates 16; the long groove 12 is opened on the top plate 15; the top plate 15 and the two side plates 16 form an inverted U-shaped structure, and the top plate 15 and the two side plates 16 form a mounting groove 11; before installation, the guide wheel 2, the support wheel 5, and the guide wheel 14 are installed on the two side plates 16, and then the cam structure 3, the rotating arm 4 and the top plate 15 are assembled together on the T-shaped guide rail 7. One of the side plates 16 can be set as an integral structure with the top plate 15.
[0037] See also Figure 1 and Figure 2 As a specific embodiment of the anti-fall self-locking device provided by the utility model, the mounting frame 1 also includes a connecting beam installed between the two side panels 16, and the two ends of the connecting beam are fixedly connected to the two side panels 16; the addition of the connecting beam makes the connection strength between the two side panels 16 higher, and the bearing capacity of the entire mounting frame 1 is stronger.
[0038] See also Figures 1 to 4 As a specific embodiment of the anti-fall self-locking device provided by the utility model, the other end of the rotating arm 4 is provided with a connecting hole 41 for connecting with a safety rope; with the help of the connecting hole 41, the safety rope can be installed on the rotating arm 4 more firmly and conveniently.
[0039] Specifically, the guide wheel 2 is a bevel wheel with a slope of 9-10 degrees, preferably 9.46 degrees, so that the friction between the guide wheel 2 and the transverse track 71 of the T-shaped guide rail 7 is small and the supporting performance is high.
[0040] As a specific implementation of the anti-fall self-locking device provided by the utility model, the guide wheel 2 is made of nylon material; the guide wheel 2 made of nylon material has the characteristics of being light and wear-resistant.
[0041] See also Figures 1 to 4 As a specific embodiment of the anti-fall self-locking device provided by the utility model, a rotating shaft 32 rotatably connected to the mounting frame 1 is provided on the cam structure 3, and the anti-fall self-locking device also includes a locking mechanism 6 fixedly installed on one side of the mounting frame 1, one end of the rotating shaft 32 passes through the mounting frame 1 and is connected to the locking mechanism 6, and the locking mechanism 6 is used to limit and lock the rotating shaft 32 and open the rotation; a through hole is provided on the cam structure 3, and the rotating shaft 32 is installed in the through hole and fixedly connected to the cam structure 3; it is rotatably connected to the mounting frame 1 with the help of two ends of the rotating shaft 32, and one end of the rotating shaft 32 passes outside the mounting frame 1; at the same time, a locking mechanism 6 is arranged on the mounting frame 1, and one end of the rotating shaft 32 is connected to the locking mechanism 6, and the rotating shaft 32 is limited or released by the locking mechanism 6, so that the staff can operate according to the working conditions.
[0042] See also Figures 1 to 4As a specific embodiment of the anti-fall self-locking device provided by the utility model, the locking mechanism 6 includes an installation box 61, a limit block 62 slidably connected to the installation box 61, and a push-pull rod 63 connected to the limit block 62; the installation box 61 is provided with a connecting port on one side close to the installation frame 1, and a sliding hole 65 is provided on one end surface. One end of the rotating shaft 32 passes through the connecting port and is located in the installation box 61. A limit groove 33 is provided at one end of the rotating shaft 32. A limit protrusion 64 is provided on the limit block 62 and is installed in cooperation with the limit groove 33, and the limit protrusion 64 is provided on the limit block 62. 4 is slidably connected with the limit groove 33; the push-pull rod 63 is slidably connected with the sliding hole 65; the installation box 61 is fixedly installed on one side of the installation frame 1, and the connection port on the installation box 61 corresponds to the through hole on the installation frame 1, so that the rotating arm 4 passes through the through hole and the connection port and enters the installation box 61; the limit groove 33 is set at one end of the rotating arm 4 located inside the installation box 61, and the limit block 62 is located on one side of the rotating arm 4 and corresponds to the limit groove 33; the push-pull rod 63 is slidably penetrated in the sliding hole 65 and one end is connected with the limit block 62. When in use, the push-pull rod 63 is manipulated to move along the sliding hole 65, and then the limit block 62 is manipulated to move toward the rotating shaft 32, so that the limit protrusion 64 on the limit block 62 is stuck in the limit groove 33, so that the rotating arm 4 cannot rotate. When the limit of the rotating arm 4 needs to be released, the push-pull rod 63 is controlled to move in the opposite direction so that the limit protrusion 64 on the limit block 62 is separated from the limit groove 33, and the rotating arm 4 is no longer limited, so it can rotate smoothly. The limit groove 33 is a plane groove opened on the outer surface of the rotating arm 4, and the limit protrusion 64 is a boss extending downward from the lower end surface of the limit block 62, and the boss is installed in cooperation with the plane groove.
[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A fall prevention self-locking device, characterized in that: include: The mounting frame has a mounting groove at the lower end thereof for mounting in cooperation with the T-shaped guide rail, and the mounting groove penetrates the mounting frame; the upper end surface of the mounting frame is provided with a long groove connected to the mounting groove; There are two guide wheel groups, which are rotatably connected to the two opposite side walls of the mounting groove, and the axial direction of the guide wheel is perpendicular to the length direction of the T-shaped guide rail; an accommodation spacing for accommodating the transverse track of the T-shaped guide rail is provided between the guide wheel group and the top surface of the mounting groove, and the guide wheel is used to contact the lower end surface of the transverse track; A cam structure is installed in the installation groove and is rotatably connected to the installation frame; the axial direction of the cam structure is perpendicular to the length direction of the T-shaped guide rail and is located above the T-shaped guide rail; the cam structure is provided with a friction surface for contacting the upper end surface of the transverse track; A rotating arm is inserted into the long slot, one end of which is fixedly connected to the cam structure and the other end of which is located outside the mounting frame; the other end of the rotating arm is used to be connected to a safety rope.
2. The anti-fall self-locking device according to claim 1, characterized in that: The anti-fall self-locking device also includes two support wheel groups that are rotatably connected to the two side walls opposite to the mounting groove, and the support wheel is located above the guide wheel, and the axial direction is parallel to the axial direction of the guide wheel; the support wheel and the guide wheel are used to accommodate the accommodating spacing of the transverse rail, and the support wheel is in contact with both sides of the upper end surface of the transverse rail.
3. The anti-fall self-locking device according to claim 2, characterized in that: Grooves are provided on both side walls of the mounting groove, and the grooves are located between the guide wheel and the support wheel. The guide wheel is rotatably connected in the grooves, and the axial direction of the guide wheel is perpendicular to the axial direction of the guide wheel and the length direction of the T-shaped guide rail; the outer side surface of the guide wheel is used to contact the side surface of the transverse rail.
4. The anti-fall self-locking device according to claim 1, characterized in that: The mounting frame includes a top plate and two side plates respectively fixedly mounted on both sides of the top plate, the two side plates and the top plate forming the mounting groove; the guide wheel is rotatably connected to the corresponding side plate, and the cam structure is rotatably connected to the two side plates; the long groove is opened on the top plate.
5. The anti-fall self-locking device according to claim 4, characterized in that: The mounting frame further comprises a connecting beam installed between the two side plates, and two ends of the connecting beam are fixedly connected to the two side plates.
6. The anti-fall self-locking device according to claim 1, characterized in that: The other end of the rotating arm is provided with a connecting hole for connecting with a safety rope.
7. The anti-fall self-locking device according to claim 1, characterized in that: The guide wheel is a bevel wheel with a slope of 9-10 degrees.
8. The anti-fall self-locking device according to claim 1, characterized in that: The guide wheel is made of nylon.
9. The anti-fall self-locking device according to any one of claims 1 to 8, characterized in that: The cam structure is provided with a rotating shaft rotatably connected to the mounting frame. The anti-fall self-locking device also includes a locking mechanism fixedly mounted on one side of the mounting frame. One end of the rotating shaft passes through the mounting frame and is connected to the locking mechanism. The locking mechanism is used to limit and lock the rotating shaft and open the rotation.
10. The anti-fall self-locking device according to claim 9, characterized in that: The locking mechanism includes an installation box, a limit block slidably connected to the installation box, and a push-pull rod connected to the limit block; a connecting port is provided on a side of the installation box close to the installation frame, and a sliding hole is provided on one end face, one end of the rotating shaft passes through the connecting port and is located in the installation box, one end of the rotating shaft is provided with a limit groove, the limit block is provided with a limit protrusion that is installed in cooperation with the limit groove, and the limit protrusion is slidably connected to the limit groove; the push-pull rod is slidably connected to the sliding hole.