JPH1017282A - Suspending tool having falling preventive function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain safe suspension to keep a unit horizontal by connecting a three- point suspending rope composed of two ropes to the tip of a pulling-up rope inserted into a pulley through an O ring, and fitting/inserting a safety switch to press and grippingly hold the rope by rotation of a claw to/into the base end side of the pulling-up rope whose direction can be reversed by the pulley. SOLUTION: A three-point suspending rope 4 is composed of bending bisected suspending ropes 2 in which hooks 23 are arranged in both end parts of ropes 22 having a prescribed length and which are inserted into an O-ring 5 and an adjusting rope 3 in which a prescribed length rope 32 having a hook 31 one one end is inserted into the O-ring 5 and whose one end is folded back and is superposed on each other and a thermally contractible tube 33 is fitted and inserted by a specific length and which can adjust a length between the O-ring 5 and the hook 31 by pulling the other end of the rope 32. In a rope 6, a long size rope is bound to a hook 61 hooked on the O-ring 5, and a safety switch 7 is fitted and installed through a pulley. A rotary hook 73 connected to the safety switch 7 is connected to the O-ring 5, and a unit U is horizontally suspended by the three-point suspending rope 4 hooked on the O-ring 5, and a fastening claw of the safety switch 7 prevents deviation of the suspending rope 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for lifting an article on an upper part of a utility pole, and more particularly, to a special-purpose suspender used for attaching an antenna device of a PHS (simple cellular phone), which is rapidly expanding in recent years, to a tip of the utility pole. It concerns the upper tool.

[0002]

Conventionally, PHS
When the antenna was mounted on the tip of a utility pole, the rope was pulled through a pulley installed on the utility pole, and the rope was wound up from the ground to lift the antenna unit connected to the tip of the rope. The PHS antenna has a shape that the antenna part protrudes from the device part, and if you try to lift it after assembling the whole device, it is difficult to balance it,
In some cases, the antenna was hit by another strong wind while being lifted, and tilted to one side while hitting another mounting hardware, causing the entire unit to fall. In addition, separate work such as mounting arms, transceivers, and antennas requires time-consuming work, and is a high-altitude work, which increases the risk of traffic. It was something that became.

[0003]

Therefore, in the present application, the mounting arm, the transceiver, the antenna, etc. are assembled on the ground,
It can be stably lifted at once. In addition, in order to cope with a drop during lifting, a safety device that holds the lifting rope and holds the lifting position is provided to cope with an unexpected situation. Using a three-point hanging rope corresponding to the T-arm A of the PHS antenna unit U, pull up the unit U to the mounting position while keeping the unit horizontal, and prevent the unit from dropping if a situation occurs in which the hand is released from the lifting rope. As a device, the O-ring connecting the three-point hanging rope and the hanging rope are connected by a safety device and a hook,
It is configured in a loop with a pulley interposed. When the hand is separated from the parent rope, the stop claw of the safety device rotates, and the pulling rope is grasped, so that even if the worker slides his hand, the unit U stops at that position. Further, when the lifting is restarted thereafter, if the pulling rope is pulled, the locking claw of the safety device is released from the parent rope, so that the lifting rope can be wound up and the unit U can be raised. On the other hand, if the user wants to lower the unit U, the user can lower the unit U by pulling up the rope once and releasing the stopper of the safety device from the rope, and then slowly pulling the rope slowly little by little. .

[0004]

2. Description of the Related Art Conventionally, when constructing a power line, it is common practice that a worker climbs on a power pole, attaches a bracing arm, a power pole band, an insulator, etc., suspended from the ground, and performs extension and tightening. Was the way. Therefore, the method of lifting the PHS antenna equipment is similar to the construction of the power line, in which the T-arm is attached to the utility pole, and then the necessary equipment such as the transceiver, the transmission / reception antenna, and the control box are sequentially lifted and attached to the arm. Was. However, as mentioned above,
Dropping and breaking the equipment, injuring a pedestrian, or forcing a worker to work at a high place for a long time was not considered to be a preferable working method because a worker crash could be considered. Therefore, since all the PHS antenna equipment is to be attached to the T-arm A,
Attach the equipment to the mold arm A, unitize it, lift the T-arm A and hang it with a rope,
In addition to shortening the work to high places in a short time and saving labor,
The work method was designed in consideration of worker safety and pedestrian safety. However, in the conventional method in which a single hanging rope provided with a hook at one end of a long rope is pulled through a pulley attached to an upper part of a utility pole and lifted, it is difficult to balance the PHS antenna unit U, and the inclined unit U
To attach the base end of the T-arm A of the unit to a predetermined position by lifting the unit, the direction of the unit U must be changed, and the fitting of the T-arm A to the mounting band by pushing or pulling is required. The connection was not easy, and the work method performed for the purpose of shortening the work time at high places and measuring the safety was not so different from the conventional method. In addition, since the antenna portion of the unit U is protruding and it is difficult to balance, the unit U is propelled by a strong wind during the lifting, or tilts to one side against another telephone pole, and in the worst case, the rope comes off and the unit is disconnected. Sometimes U was dropped.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lifting tool according to the present invention comprises a lifting arm 1 which is mounted above a utility pole at a position where an antenna is to be mounted and has a pulley 18 at the end, a three-point lifting rope 4 which keeps a PHS antenna unit U horizontal, and one end. The hanging rope 6 includes a long hanging rope 6 provided with a hook 61, a safety device 7 fitted to the hanging rope 6, and a rotary hook 73 attached to the safety device via a shackle 72. The three-point hanging rope 4 is provided with hooks 23 at both ends of a predetermined length of a three-strand rope 22, inserted into the O-ring 5, bent to both sides and bisected into two parts,
A 12-stroke rope 32 having a predetermined length with a hook 31
Insert into the ring 5 and polymerize one end by folding and heat shrink tubing 33
Into the O-ring by inserting the other end of the rope 32
5 and an adjusting rope 3 that allows the length between the hooks 31 to be adjusted. The rope 6 is formed by attaching a long rope to a hook 61 to be hung on the O-ring 5, turning it over with a pulley, and fitting a safety device 7. The rotating hook 73 connected to the safety device 7 is connected to the O-ring 5, and the unit U is lifted in a horizontal state by the three-point hanging rope 4 hung on the O-ring 5, and when the hand is released from the hanging rope 6, The stop claw of the safety device 7 is stopped by pulling up the rope 8 to stop the unit U from falling.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present application will be described in detail. A lifting tool for a utility pole of a PHS antenna unit of the present application includes a mount D for a utility pole, a lifting arm 1 connected to the mount D, and a PH.
A three-point suspension rope 4 for lifting the S antenna unit U while keeping it horizontal, and a lifting rope for lifting
8 The mounting base D is attached to the base 11 by means 12 for mounting to a utility pole.
Is provided. The attaching means 12 has a hook provided at one end of the narrow woven belt, and the other end is inserted through a ratchet buckle connected to the base 11. The lifting arm 1 is connected to a base D of a protruding arm 13 formed of a square pipe by a shaft 14 so as to be rotatable in the vertical direction and is connected to a mounting base D by a shaft 14. The protruding arm 13 can be fixed at a predetermined angle by passing through a plurality of holes 16 provided in a circular arc shape at the base end of the protruding arm 13 through a rotation stop pin 17. A handle 19 obtained by welding a round bar or the like in a U-shape is provided on the upper side of the center of the protruding arm 13, and a safety rope 20 having a hook 21 at one end is provided on the handle 19. At the tip of the protruding arm 13, a pulley 18 is suspended and provided.

The three-point suspension rope 4 is provided with hooks 23 at both ends of a predetermined length of a three-strand rope 22, inserted through the O-ring 5, bent to both sides, and used in a two-part state. 2 and
A 12-stroke rope 32 having a predetermined length with a hook 31
A heat-shrinkable tube 33 is inserted into the ring 5 at one end, folded at one end, and a heat-shrinkable tube 33 is inserted into the overlapped portion at a fixed length. 3 The above two ropes are combined so as to adjust the antenna unit U so that the antenna unit U can be kept horizontal.

The pulling rope 8 having a fall prevention function is provided with a hook 61 at one end of the long hanging rope 6 and inserted into the pulley 18 of the lifting arm 1. Since the side plate of the pulley 18 can be opened and closed with screws, even if it is a rope with a hook,
The intermediate portion can be set in the insertion state. A safety device 7 is inserted into the middle portion of the long suspension rope 6, and a rotating hook 73 provided on a lifting ring 71 of the safety device 7 via a shackle 72 is hooked on the O-ring 5, so that the O-ring 5, A loop connected by a rope is formed between the pulley 18 and the safety device 7.

In the method of use of the present invention, first, the lifting arm 1 is mounted above the mounting position of the PHS antenna unit. The worker lifts the lifting arm 1 on a telephone pole and lifts the hook 21 of the safety rope 20. Hang it on a step bolt, upper cable, etc. to prevent it from falling. Next, the hook of the attachment means 12 of the lifting arm 1 is hung on one end of the base 11 and the ratchet buckle is used to firmly attach the electric pole to the electric pole. It is attached by avoiding upward. Then, a long suspension rope 6 forming the lifting rope 8 is hung on the pulley 18. Next, the worker on the ground attaches both ends of the hanging rope 2 of the three-point hanging rope 4 to both ends of the short arm of the T-shaped arm A (near the transmitting / receiving antenna mounting portion).
Wrap the end 22 a couple of times and hang the hook 23 on the rope 22. Then the O-ring 5 is located at the center of the hanging rope 2,
Balance in the short arm direction can be achieved. Next, the end of the hook 31 of the adjusting rope 3 is wound around the long arm two or three times, and the hook 31 is hung on the rope 32. Then, lift the O-ring 5 slightly and pull the other end of the rope 32 of the adjusting rope 3 so as to be horizontal, and balance in the long arm direction. Next, the hook 61 of the suspension rope 6 forming the lifting rope 8 hung on the pulley 18 of the
While hanging on the ring 5, the rotary hook 73 provided at one end of the safety device 7 is also hooked on the O-ring 5. At this point, if the safety device 7 is not inserted into the lifting rope 8, the safety device 7 is opened and inserted, and preparation for lifting is completed. still,
At the time of lifting, if a detent rope is attached to the equipment mounting plate or the like provided on the T-shaped arm A, it is possible to avoid collision with other pillars by operation from the ground, and the T-shaped. Easily oriented in the direction of the mounting band on the arm,
The installation work is easy, and it is an effective means for lifting on complicated pole poles.

After the preparation as described above, the ground worker pulls the lifting rope 8 by holding the long hanging rope 6, and lifts the PHS antenna unit U. At this time, the worker slides his hand. Even if it is released or accidentally released, the locking claw of the safety device 7 rotates, grasps the long hanging rope 6, stops and stops falling. In addition, since it can be stopped by using the detent claw of the safety device 7, it can be pulled up only when necessary, and, as in the conventional case, the force is continuously applied to the rope 6 until the attachment of the T-arm A is completed. You don't have to. Therefore, it is possible to reduce the fatigue and the tension of the worker, and it is also possible to take a break during the work.

[0011]

According to the present invention, as described above, the unit U can be lifted by the three-point hanging rope 4 while keeping it horizontal, and can be easily attached to a utility pole. Therefore, unlike the conventional case, the unit U is not inclined and, in the worst case, shifted and dropped together. Also pulling rope
8 is an O-ring 5 of a three-point hanging rope 4 by a safety device 7,
The hanging rope 6 is connected in a loop, and the lifting rope 8
When the pulling is stopped, the unit U is lifted, and when the pulling is stopped, the locking claw of the safety device 7 is rotated, and the device is stopped by grasping the long hanging rope 6 to prevent the unit U from descending. It is. In addition, since it can be stopped, it is only necessary to raise it when necessary, and it is not necessary to continually apply force to the hanging rope 6 until the attachment of the T-arm A is completed, as in the conventional case, and the operator is tired. It is possible to reduce the nervousness and the tension, and it is also possible to take a break during the work.

[Brief description of the drawings]

FIG. 1 is a front view of a lifting rope of the present application.

FIG. 2 is a front view of the lifting arm of the present application.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an explanatory view of a lifting state of the present application.

FIG. 5 is an explanatory view of a stop state during lifting according to the present application.

FIG. 6 is a perspective view of a PHS antenna unit.

[Explanation of symbols]

 1 Lifting arm 2 Hanging rope 3 Adjusting rope 4 Three-point hanging rope 5 O-ring 6 Hanging rope 7 Safety device 8 Lifting rope 11 Base 12 Mounting means 13 Projecting arm 14 Axis 15 Through hole 16 Hole 17 Detent pin 18 Pulley 19 Handle 20 Safety rope 21 Hook 22 Rope 23,31 Hook 32 Rope 33 Heat shrink tube 61 Hook 71 Lifting ring 72 Shackle 73 Rotating hook A T-arm D Mounting base U Unit

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuo Kayama 38-2 Yamazaki, Kamakura City, Kanagawa Prefecture NTT Ofuna Lineman Center 2F NTT Telecom Engineering Kanto Fujisawa Service Center (72) Inventor Takanori Fujiga 2573 Fuji Electric Works Co., Ltd. at 1573 Kami-Takino, Takino-cho, Kato-gun, Hyogo Prefecture

Claims (1)

[Claims] 1. A pulley 18 is connected to a mount D for a utility pole and a projecting arm 13 whose base end pivots up and down by a predetermined angle to suspend and support a pulley 18. , 2
A three-point hanging rope 4 composed of two ropes is connected via an O-ring 5 and a pulling rope at a position reversed by a pulley 18
8 A lifting tool with a fall prevention function, wherein a safety device 7 for pressing and gripping a rope by rotation of a claw is inserted into the base end side.