Self-locking safety device for high-altitude operation of line

Abstract

The utility model relates to the technical field of high-altitude operation protection equipment, in particular to a self-locking safety device for line high-altitude operation, which comprises a safety lock catch and a stabilizer bar, and a self-locking component for self-locking the safety lock catch on a steel wire rope is arranged between the safety lock catch and the stabilizer bar. According to the utility model, the self-locking assembly is arranged between the safety lock catch and the stabilizer bar, the overhead conductor is extruded by the cooperation of the two braking vanes and the guide wheel, and the safety lock catch can be locked on the overhead conductor by the friction force generated by the braking vanes. Compared with a traditional one-way self-locking device, mutual cooperation of the safety lock catch and the self-locking assembly can facilitate random transverse movement of power maintenance personnel on the overhead conductor, and the self-locking device has the advantages that the safety lock catch and the self-locking assembly are convenient to use, and the self-locking device is simple in structure and convenient to use. The installation direction of the one-way self-locking device does not need to be switched according to the moving direction, and therefore the defects caused by switching of the installation direction of a traditional self-locking device are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of high-altitude operation protective equipment, in particular to a self-locking safety device for high-altitude line operation. Background Art

[0002] The self-locking safety device for high-altitude operations, also known as the self-locking safety device, is a safety device for high-altitude operations. Its main function is to prevent operators from falling accidents during high-altitude operations and protect the operators. The self-locking device is used together with the safety belt and wire rope and is worn on the safety belt. When the operator loses balance and slips, the self-locking device will immediately start to control the operator in place for safety.

[0003] During emergency repairs on high-altitude lines, power maintenance personnel need to walk horizontally on the overhead wires. The self-locking tongue in the traditional self-locking device is set in an arc shape. The installation method of this self-locking device needs to ensure that the rotation direction of the self-locking tongue is the same as the travel direction, thereby ensuring that the self-locking tongue can smoothly lock the overhead wires. However, the power maintenance personnel walking on the overhead wires does not move in a one-way direction, which leads to the need to change the setting angle of the self-locking device in time according to the actual travel direction, thereby increasing the working time of the power maintenance personnel on the high-altitude lines. For this reason, a self-locking safety device for high-altitude line operations is proposed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a self-locking safety device for high-altitude line operations, which solves the technical problem that the setting direction of the traditional self-locking device needs to be adjusted in time according to the moving direction of the power maintenance personnel.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a self-locking safety device for high-altitude line operations, comprising a safety lock buckle and a stabilizing rod, a self-locking assembly for self-locking the safety lock buckle to the wire rope is provided between the safety lock buckle and the stabilizing rod; a pull rod is provided in a sliding manner within the stabilizing rod, and one end of the pull rod is provided with a safety belt connecting ring;

[0006] The self-locking assembly includes a drive housing disposed between the safety lock catch and the stabilizing rod, a U-shaped extrusion member and a drive rod slidably disposed in the drive housing, and two rotating shafts rotatably disposed in the drive housing;

[0007] The U-shaped extrusion is provided with a rectangular groove for facilitating the sliding of the driving rod. Brake plates are provided in the safety locks on both sides of the upper end of the U-shaped extrusion. The driving rod is fixedly connected to the other end of the pull rod.

[0008] A transmission gear is provided on the rotating shaft, and driving racks for cooperating with the transmission gear are provided on both sides of the driving rod. Two driven racks for cooperating with the transmission gear are provided on the inner side of the U-shaped extrusion piece.

[0009] Preferably, the self-locking assembly also includes an extrusion ring slidably arranged on the stabilizing rod and an extrusion spring sleeved on the stabilizing rod. The extrusion ring is fixed to the pull rod through two connecting blocks. One end of the extrusion spring abuts against the drive housing, and the other end of the extrusion spring abuts against the extrusion ring.

[0010] Preferably, the safety lock includes a shell, a guide wheel rotatably arranged in the shell, and a baffle rotatably arranged on the shell. A locking block is also provided in the shell, and the locking block and the baffle are fixed by connecting bolts.

[0011] Preferably, the stabilizer bar is also provided with an insulating anti-skid layer, and a limit plate for use with the brake plate is provided in the outer shell.

[0012] Preferably, a sliding groove for sliding the connecting block is provided on the stabilizing rod, and the length of the sliding groove is greater than the moving range of the U-shaped extrusion piece.

[0013] Preferably, the distance between the two brake plates is greater than the inner diameter of the guide wheel.

[0014] By means of the above technical solution, the utility model provides a self-locking safety device for overhead line operations, which has at least the following beneficial effects:

[0015] The utility model sets a self-locking component between the safety lock and the stabilizer bar, utilizes the cooperation of two brake plates and guide wheels to squeeze the overhead wire, and utilizes the friction force generated by the brake plates to enable the safety lock to be locked on the overhead wire, and the entire self-locking component can always ensure the squeezing of the overhead wire without the influence of external force, thereby realizing the real-time self-locking function. Compared with the traditional one-way self-locking device, the mutual cooperation of the safety lock and the self-locking component can facilitate the power maintenance personnel to move the overhead wire horizontally at will, and there is no need to switch the installation direction of the one-way self-locking device according to the movement direction, thereby solving the disadvantages brought about by the traditional self-locking device switching the installation direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the installation structure of the safety lock of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the shell of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the self-locking component of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the U-shaped extrusion piece of the utility model;

[0021] Figure 5 This is a schematic diagram of the working structure of the brake plate of the utility model.

[0022] In the figure: 1. Safety lock; 101. Housing; 102. Guide wheel; 103. Baffle; 104. Locking block; 2. Self-locking assembly; 201. Drive housing; 202. U-shaped extrusion; 203. Drive rod; 204. Rotating shaft; 205. Brake plate; 206. Transmission gear; 207. Extrusion ring; 208. Extrusion spring; 3. Stabilizer bar; 301. Pull rod; 302. Safety belt connecting ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] Please refer to Figure 1-Figure 5 A self-locking safety device for high-altitude line operations includes a safety lock buckle 1 and a stabilizing rod 3. A self-locking assembly 2 is provided between the safety lock buckle 1 and the stabilizing rod 3 for self-locking the safety lock buckle 1 to the wire rope; a pull rod 301 is provided slidingly inside the stabilizing rod 3, and a safety belt connecting ring 302 is provided at one end of the pull rod 301;

[0026] Furthermore, the safety lock 1 includes a shell 101, a guide wheel 102 rotatably arranged in the shell 101, and a baffle 103 rotatably arranged on the shell 101. A locking block 104 is also provided in the shell 101, and the locking block 104 and the baffle 103 are fixed by connecting bolts.

[0027] Installation method of the safety lock 1: After the power maintenance personnel climb up the overhead wire through the overhead power line tower, they open the baffle 103, snap the shell 101 onto the overhead wire, adjust the position of the shell 101 so that the guide wheel 102 is above the overhead wire, and then close the baffle 103, and fix the baffle 103 to the locking block 104 in the shell 101 through the connecting bolts, so that the safety lock 1 is completely mounted on the overhead wire.

[0028] The setting of the stabilizing bar 3 can ensure that the safety lock buckle 1 is in a vertical state as a whole, so that the guide wheel 102 is always above the overhead wire. When the stabilizing bar 3 is pulled to move, the entire safety lock buckle 1 can be driven to move, and the total weight of the safety lock buckle 1 and the stabilizing bar 3 is applied to the overhead wire through the guide wheel 102. The use of the guide wheel 102 reduces the wear on the overhead wire, thereby protecting the external condition of the overhead wire.

[0029] Example 2

[0030] Please refer to Figure 2-Figure 5 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0031] As a further technical solution of this embodiment, the self-locking assembly 2 includes a drive housing 201 disposed between the safety lock catch 1 and the stabilizing bar 3, a U-shaped extrusion 202 and a drive rod 203 slidably disposed in the drive housing 201, and two rotating shafts 204 rotatably disposed in the drive housing 201;

[0032] A rectangular groove is provided on the U-shaped extrusion 202 to facilitate the sliding of the driving rod 203. Brake plates 205 are provided on both sides of the upper end of the U-shaped extrusion 202 in the safety lock 1. The driving rod 203 is fixedly connected to the other end of the pull rod 301.

[0033] A transmission gear 206 is provided on the rotating shaft 204 , and driving racks for cooperating with the transmission gear 206 are provided on both sides of the driving rod 203 . Two driven racks for cooperating with the transmission gear 206 are provided on the inner side of the U-shaped extrusion piece 202 .

[0034] Furthermore, the self-locking assembly 2 also includes an extrusion ring 207 slidably arranged on the stabilizing rod 3 and an extrusion spring 208 sleeved on the stabilizing rod 3. The extrusion ring 207 is fixed to the pull rod 301 through two connecting blocks. One end of the extrusion spring 208 abuts against the drive housing 201, and the other end of the extrusion spring 208 abuts against the extrusion ring 207.

[0035] Furthermore, an insulating anti-slip layer is provided on the stabilizer bar 3, and a limit plate is provided in the outer shell 101 for use with the brake plate 205; a sliding groove is provided on the stabilizer bar 3 for sliding the connecting block, and the length of the sliding groove is greater than the moving range of the U-shaped extrusion 202.

[0036] Furthermore, the distance between the two brake plates 205 is greater than the inner diameter of the guide wheel 102;

[0037] The U-shaped extrusion 202 and the brake plate 205 in the self-locking component 2 can effectively cooperate with the guide wheel 102 to lock the safety lock 1. The specific principle is: when the two brake plates 205 move to one side of the guide wheel 102, since the guide wheel 102 is arranged on one side of the overhead wire, and the two brake plates 205 are arranged on the other side of the overhead wire, and the central axis of the guide wheel 102 is between the two brake plates 205, after the two brake plates 205 move, the overhead wire will be locked under the extrusion of the guide wheel 102 and the two brake plates 205. The strength of the entire locking is determined by the friction force of the two brake plates 205 on the overhead wire. The greater the positive pressure applied by the brake plates 205 to the overhead wire, the higher the locking strength.

[0038] The working principle of the self-locking assembly 2 is as follows: when the driving rod 203 moves toward the side away from the guide wheel 102, the driving racks provided on both sides of the driving rod 203 also move, thereby driving the transmission gear 206 meshing with it to rotate, and the rotation of the transmission gear 206 can drive the driven rack to move, that is, drive the entire U-shaped extrusion 202 to move toward the side of the guide wheel 102;

[0039] The entire driving process is as follows: when the driving rod 203 moves away from the guide wheel 102, the two transmission gears 206 drive the U-shaped extrusion 202 to move toward the guide wheel 102, and further drive the two brake plates 205 to move toward the guide wheel 102;

[0040] Since the driving rod 203 is arranged at one end of the pull rod 301, and the extrusion ring 207 is fixed to the pull rod 301 through two connecting blocks, the extrusion spring 208 can drive the extrusion ring 207 to move away from the guide wheel 102, that is, drive the driving rod 203 to move toward the guide wheel 102. At this time, the two brake plates 205 will lock the overhead wire.

[0041] That is, in the initial state: due to the setting of the extrusion spring 208, the two brake plates 205 lock the overhead wire. When the power maintenance personnel set the safety lock buckle 1 on the overhead wire, the safety lock buckle 1 is in a self-locking state. When the power maintenance personnel walk on the overhead wire, they need to hold the stabilizing bar 3 with their hands and push the extrusion ring 207 to move, thereby releasing the self-locking state of the safety lock buckle 1. At this time, the power maintenance personnel will move with the safety lock buckle 1. The advantage of this setting is that the safety lock buckle 1 needs to be unlocked when moving, so that the safety lock buckle 1 moves with the movement of the power maintenance personnel, ensuring the correct function of the safety lock buckle 1 and ensuring that the hanging point is close to the power maintenance personnel.

[0042] In addition, the safety lock 1 is in a self-locking state when there is no external force, so that when the power maintenance personnel are working in a suitable working range, the safety lock 1 is self-locked on the overhead wire through the self-locking component 2, and the hanging point will not move at will, effectively ensuring the function of the safety lock 1;

[0043] When the power maintenance personnel lose their balance and slip, since the safety belt anti-fall rope worn by the power maintenance personnel is directly connected to the safety belt connecting ring 302, the power maintenance personnel will directly pull the pull rod 301 when falling, causing the pull rod 301 to move to the side away from the guide wheel 102. At this time, the positive pressure applied by the two brake plates 205 to the overhead wire is the power maintenance personnel's own weight. Driven by this friction force, the safety lock buckle 1 can be effectively prevented from moving horizontally, providing effective convenience for the power maintenance personnel to adjust their posture and restore their own position.

[0044] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to in detail. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For relevant parts, please refer to the partial description of the method embodiments.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking safety device for high-altitude line operations, comprising a safety lock (1) and a stabilizing bar (3), characterized in that: A self-locking assembly (2) for self-locking the safety lock buckle (1) to the steel wire rope is provided between the safety lock buckle (1) and the stabilizing rod (3); a pull rod (301) is provided in a sliding manner in the stabilizing rod (3), and a safety belt connecting ring (302) is provided at one end of the pull rod (301); The self-locking assembly (2) comprises a drive housing (201) disposed between the safety lock catch (1) and the stabilizing rod (3), a U-shaped extrusion member (202) and a drive rod (203) slidably disposed in the drive housing (201), and two rotating shafts (204) rotatably disposed in the drive housing (201); The U-shaped extrusion (202) is provided with a rectangular groove for facilitating the sliding of the driving rod (203), and brake plates (205) are provided on both sides of the upper end of the U-shaped extrusion (202) in the safety lock (1), and the driving rod (203) is fixedly connected to the other end of the pull rod (301); A transmission gear (206) is provided on the rotating shaft (204), driving racks for cooperating with the transmission gear (206) are provided on both sides of the driving rod (203), and two driven racks for cooperating with the transmission gear (206) are provided on the inner side of the U-shaped extrusion piece (202).

2. A self-locking safety device for overhead line operations according to claim 1, characterized in that: The self-locking assembly (2) further comprises an extrusion ring (207) slidably arranged on the stabilizing rod (3) and an extrusion spring (208) sleeved on the stabilizing rod (3); the extrusion ring (207) is fixedly arranged with the pull rod (301) via two connecting blocks; one end of the extrusion spring (208) abuts against the drive housing (201), and the other end of the extrusion spring (208) abuts against the extrusion ring (207).

3. A self-locking safety device for overhead line operations according to claim 2, characterized in that: The safety lock (1) comprises a housing (101), a guide wheel (102) rotatably arranged in the housing (101), and a baffle (103) rotatably arranged on the housing (101); a locking block (104) is further provided in the housing (101); the locking block (104) and the baffle (103) are fixedly arranged by connecting bolts.

4. A self-locking safety device for overhead line operations according to claim 3, characterized in that: The stabilizing rod (3) is also provided with an insulating anti-skid layer, and a limiting plate for cooperating with the brake plate (205) is provided in the housing (101).

5. The self-locking safety device for overhead line operations according to claim 2, characterized in that: The stabilizing rod (3) is provided with a sliding groove for sliding the connecting block, and the length of the sliding groove is greater than the moving range of the U-shaped extrusion piece (202).

6. The self-locking safety device for overhead line operations according to claim 3, characterized in that: The distance between the two brake plates (205) is greater than the inner diameter of the guide wheel (102).

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