JP3054984U - Fall prevention equipment for transmission tower painting - Google Patents

Abstract

(57) [Summary] [Problem] Since the pulling rope 8 is attached to the flexible connecting rope 5, the operation becomes difficult when the ropes are entangled by wind.
Also, the descent distance may be increased due to excessive pulling against the load. SOLUTION: A connecting rope 5 and a pulling rope 8 are separated, and a pulling direction thereof is set to a busbar rope R direction. Also, a guide 20 is provided to prevent the pull rope 8 from being separated from the busbar rope R by the wind, and the guide 20 has a role of a weight for preventing the pull rope 8 from rising by the wind. is there.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fall prevention device used when ascending or descending to a high place such as a power transmission tower or a construction site, and particularly to a safety device for preventing a fall used in painting work on a power transmission tower.

[0002]

[Problems to be solved by conventional techniques and devices]

 In the painting work of the transmission line tower, the painting is started from the top of the tower, and the work is performed while gradually moving downward as the painting of the predetermined part is completed. To reach the top of the tower, first, a busbar rope is stretched along any of the four legs of the tower, and a safety device for elevating is inserted into this busbar rope and connected to the safety belt at the waist of the worker. However, when the foot is stepped off at all, the lever that is pivotally supported inside the rope insertion holder of the safety device rotates, and the safety device engages with the busbar rope, causing the safety busbar to drop. It stopped above and detained workers to prevent a crash. In this way, the tower itself is protected from falling when it is raised or lowered.However, when painting, it is necessary to move away from the main landing gear equipped with the busbar ropes. In addition to the safety equipment, it is necessary to provide means for preventing falling in lateral and diagonal directions. This is because the length of the rope for connecting to the safety belt of the fall safety device for normal climbing is about 50 cm in consideration of its operability, and it is about 50 cm from the single purpose of using it for climbing and descending. However, it was impossible to move to other main landing gears. For this reason, it is not desirable from the point of view of work efficiency that the painting work, which does not stay in one place for a long time, is not preferable because another transverse movement busbar rope is stretched when moving in the lateral direction. It is impossible to remove this busbar rope through the painted slippery horizontal member.

[0003] In consideration of the nature of the work and the peculiarity of the work that it cannot be returned to the position after the work, as shown in Japanese Utility Model Application Laid-Open No. 3-36665, the safety for both lifting and painting work is used. A vessel was devised. This is to make the safety device for raising and lowering and the connecting rope for connecting the safety belt long, so that it can be moved laterally away from the position of the busbar rope. When it is necessary to move the safety device remotely, the lever of the safety device can be rotated to release the engagement with the busbar rope, enabling the safety device to move downward on the busbar rope. Was to do. Due to the impact load at the time of the crash, it is preferable that the position of the safety gear is always above the position of the worker's waist, and a change in the work position requires frequent changes in the position of the safety gear. The tower member immediately after painting is slippery and cannot be moved to lower the position of the safety device.In addition, the pre-painting may be useless. It was an effective means. However, there are still problems that need improvement. The pulling rope that releases the engagement with the bus bar rope by rotating the lever rod is provided in a state attached to the connecting rope that connects the safety device and the safety belt, and thus causes a problem. Was something. As shown in FIG. 3 of Japanese Utility Model Application Laid-Open No. 3-36665, the safety device comprises a rope insertion holder having a substantially U-shaped cross section and a lever rod for closing the upper part of the U-shape by means of a hinge. By rotating in the direction, the bus rope is kept pressed and kept in a pressed engagement state unless the bus rope is turned away from the bus rope by an external force. The rotation of the lever by remote control is to rotate the tip of the lever in a direction away from the bus bar rope by a pull rope connected to the base of the lever bar. A force in the direction is required. As described above, it is difficult to apply this upward force in the working state, so a roller is installed to reverse the direction. As can be seen from the figure, the pulling rope and the connecting rope are configured with the thickness according to the purpose, and the connecting rope, which is usually about 5M, is heavier than the pulling rope, and the connecting rope has It is a delicate and difficult task to rotate the lever by pulling the attached rope from a distance. Particularly on the tower, the wind is strong and the rope is loaded, and when the connecting rope is in contact with or entangled with the tower member, this remote operation becomes more difficult. In other words, when the ropes are entangled by the wind, pulling the pulling rope is a force in the direction to lift the lever rod, and also pulling the connecting rope in a tangled state. The opposing forces were pushed in the direction of the ropes, which offset each other and made operation difficult.

[0004]

[Means for Solving the Problems]

 In the present application, in order to solve such a problem, the connecting rope 5 and the pulling rope 8 are separated, and the pulling direction is set to the direction of the bus rope R. Further, a guide 20 is provided to prevent the pull rope 8 from being separated from the busbar rope R by the wind, and the guide 20 also has a role of a weight for preventing the pull rope 8 from rising by the wind. . At the position of the busbar R, a state in which the pulling rope 8 for lowering the safety device S is always in a standby state can be obtained. First, the safety device S at a position farther from the busbar rope R starts painting from a stage above the waist, and sequentially. When the work is advanced to the busbar R, the safety device S is lowered by pulling the pulling rope 8, and the work procedure of performing the next step of painting one step below is obtained.

[0005]

【Example】

 One embodiment of the present application will be described in detail. The safety device S is supported through a middle portion thereof by a rope insertion holder 1 having a substantially U-shaped cross section and a shaft 9 hinged to one side end thereof. Is composed of a lever 6 which is rotatably arranged. The other end of the shaft 9 serves as an openable and closable opening / closing section 11, which allows the bus rope R to be mounted in the bus rope insertion section 2. A rope connecting portion 4 is provided at a position opposite to the rope stopper claw 3 across the shaft 9. A spring 12 is disposed on the lever 6, and the rope stopper 3 presses the U-shaped bottom 14 of the busbar rope insertion portion 2 strongly at all times. At the upper end of the rope insertion holder 1, a roller 7 is provided to protrude, and a mounting shaft 13 is provided near the rope connecting portion 4 of the lever 6 to fix a small-diameter pull rope 8 and pass over the roller 7. . The pulling rope 8 whose direction has been reversed by the rollers 7 hangs down along the busbar rope R when being attached to the busbar rope R. Guides 20 are arranged in the middle and the lowermost end of the pull rope 8. The guide 20 has a shape in which a cylinder obtained by dividing a cylinder in the vertical direction can be combined again into a cylindrical shape. One side of the contact surface of the two is connected by a hinge 21 and the other side is a small overlapping part corresponding to the upper and lower parts. Annulus 22 protrudes. By engaging and disengaging the hook 81 attached to the middle or distal end of the pulling rope 8 to the small ring portion 22, the cylinder can be opened and closed to be attached to the busbar rope R. I do. By arranging the guide 20 at a predetermined portion of the pulling rope 8, the pulling rope 8 always keeps hanging along the busbar rope and is not swayed by the wind. By the way, another rope 82 is attached to the connection portion of the hook 81 in a bypass manner and connected to the auxiliary ring 23 of the guide 20 to prevent unexpected drop when the busbar rope R is attached. A rope 5 having a length covering the expected work range is attached to the rope connecting portion 4, and a hook 15 for connecting to a safety belt at the waist of the worker is provided. Further, since the rope 5 becomes longer as the working range becomes wider, an impact buffer 16 is disposed at a predetermined intermediate portion of the rope 5 in order to cope with an increase in the impact load at the time of a fall.

Although the present invention has the above-described configuration, it is attached to a bus rope R hanging from a main pillar P of a transmission tower to be painted. Attachment is performed by opening the opening / closing section 11 of the safety device S, inserting the busbar rope R into the U-shaped bottom 14 of the rope insertion holder 1, and setting the rope stopper claw 3 to lightly press the busbar rope R. Close the part 11. The connection hook 15 at the tip of the connection rope 5 is engaged with the ring of the safety belt, and the safety device and the worker are connected. Also, the busbar rope R is fitted into the guides 20 at the middle and the tip of the pulling rope 8, and the hook 81 is hung on the small ring portion 22 to prevent the guide 20 from opening. Preparation is completed as described above, and ascent / descent starts, but if the connecting rope 5 is pulled downward due to an unexpected fall, the lever 6 rotates and the rope pawl 3 presses the busbar rope R to prevent the fall. It is. When the construction site is reached, painting will be performed. When the painting at the stage where the connecting rope 5 can reach reaches the position and the bus reaches the position of the bus rope R, the pulling rope 8 attached to the bus rope R is pulled, and the lever 6 is turned to rotate the rope stopper claw 3. Is released, the safety device S is lowered to a predetermined position, and the next painting operation is performed.

[0007]

[Effect of the invention]

 As described above, the use of the fall prevention device of the present invention eliminates the unconnected state between the worker and the tower from the elevating state to the lateral movement, and enables safe work. In addition, safety equipment can be recovered even under working conditions where it is not possible to return to the work end position. Also, since the remote control pull rope is held in place without being lifted by the strong wind on the tower, the remote control rope entangled in the middle of the painted tower body may be less likely to slip and damage the coating. It is not necessary to go out and release the work, and the construction plan can be completed in order.

[Brief description of the drawings]

FIG. 1 is a front view of a fall prevention device of the present application.

FIG. 2 is a front view of the safety device section of the present application.

FIG. 3 is a perspective view of the safety device of the present application.

FIG. 4 is a front view of a guide section of the present application.

FIG. 5 is a perspective view of a guide of the present application.

FIG. 6 is a diagram showing a use state of the present application.

[Explanation of symbols]

 1 Rope insertion holder 2 Busbar rope insertion part 3 Rope stopper 4 Rope connection part 5 Connection rope 6 Lever rod 7 Roller 8 Pull rope 9 Shaft 10 Hinge 11 Opening / closing part 12 Spring 13 Mounting shaft 14 U-shaped bottom 15 Connection hook 16 Shock buffer 20 Guide 21 Hinge 22 Small ring 23 Auxiliary ring 81 Hook 82 Rope P Main pole R Busbar rope S Safety device

Claims (1)

[Utility model registration claims] 1. A busbar rope insertion portion of a rope insertion holder 1.
2 A shaft 9 supports an intermediate position between the rope stopper claw 3 rotating into the inside and the continuous rope connecting portion 4, and the rope connecting portion 4 is provided with a lever 6 constituted by providing a connecting rope 5 with a human body. A pulling rope 8 is connected to the vicinity of the rope connecting portion 4 of the safety device S, and the direction of the pulling rope 8 is inverted downward by a roller 7 provided at an upper position in a state where the pulling rope 8 is attached to the busbar R. And a guide 20 for gripping the bus rope R in an inserted state at a predetermined position.