How to deal with the tower crane hook wire rope hanging on the high voltage line

The knotting of the tower crane wire rope in aerial work is caused by the load of the wire rope and its own weight. The following practices should be avoided in the daily operation of the tower crane:

First of all, for the non-rotating wire rope, the rope must be correctly unwound before the wire rope is used, and the coil should be operated slowly when rolled into the drum, so that the wire rope is arranged neatly and neatly, and there must be no messy winding.

Secondly, the working length of the tower crane wire rope is all loosely twisted, and with the increase of load and overhang length, the torsion and knotting degree of the wire rope will increase. As long as the rope is put in the correct way, it can ensure that the tower crane wire rope is not knotted or less knotted.

Wire ropes are easy to twist (knot), and the solution is as follows:

1. Rearrange the wire rope once (usually said to exhaust the wire rope).

2. Turn around to deal with it: replace the head on the spire with the head on the poplar curl.

3. All of them are pulled down from the tower crane to the ground and slowly pulled to the poplar rolling machine.

4. The above three methods have been used, and the wire rope is also new, if it is still twisted, then pay attention to the wire arrangement, and turn it in the opposite direction of the twisting for two weeks.

For the twisted wire rope, because the wire rope has a large rotation moment inside, you can loosen one end of the wire rope and let it rotate, that is, hang up one end of the rope, and the other end has its own rotation breaking strength, and then load the wire rope.

Hurry up and find the power supply company to deal with it.

Summary. Hello dear and happy to answer for you. According to national regulations, the braided length of the wire rope should be greater than 15 times the diameter of the wire rope and not less than 300 mm, so as to ensure safety.

The wire rope is a spiral steel wire bundle that twists the steel wire with mechanical properties and geometric dimensions in accordance with certain rules, and it is necessary to pay attention to standardization and timely maintenance when storing and using it, so as to be more durable. I hope mine can help you and have a great day

What are the specifications for the wire rope sleeve on the hook of the tower crane for a few meters.

Hello dear and happy to answer for you. According to national regulations, the braided length of the wire rope should be greater than 15 times the diameter of the wire rope and not less than 300 mm, so as to ensure safety. The wire rope is a spiral steel wire bundle that twists the steel wire with mechanical properties and geometric dimensions in accordance with certain rules, and it is necessary to pay attention to standardization and timely maintenance when storing and using it, so as to be more durable.

I hope mine can help you and have a great day

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<> generally, what is the shape of the main rope under the hook, and what is the shape of the rope.

Hello dear, I have received your question, it will take time to sort out the information and type, please be patient

Hello dear and happy to answer for you. Hook wire rope: specifications and models are between 12mm-28mm, specifically 12mm, 16mm, 20mm.

During construction, the tower crane encounters how to deal with the situation of the high-voltage line.

Hello dear, 1. Strictly control the tower crane to carry out lifting operations within the safety zone of the northwest construction area in the direction of the reverse high-voltage line. And at the rotating mechanism is provided with an over-limiting dynamic device, when the driver is close to the warning area when the crane arm is running, it must be slowed down in advance, a gear micro-movement, and effective braking and it is strictly forbidden to lift more than 4m long materials. Two meters from the front end of the crane arm is covered with insulating plastic.

2. In the tower crane operation, when there is a power outage and a wind of more than 4 or more, or if the wind continues to increase, the tower crane driver should immediately and quickly drop the hanging object, lift the hook to the root of the boom at a distance of 2m, stop all hoisting operations, and immediately release the brake of the rotating mechanism, so that it can rotate freely in the case of the wind indicator effect, so as to avoid the sling or hanging object touching or approaching the high-voltage line. As long as the rising height of the boom and hook is out of the range of the induced electric field of the high-voltage line, there will be no electric shock accident, and it will not cause the tower crane to damage the equipment or cause a reverse accident when the wind blows. 3. When the operation area of the safe operation area, the rotation is only allowed to move in the second gear, and it is strictly forbidden to rotate in the fast gear, otherwise it will be regarded as a serious violation of the operation, and the tower crane commander and the safety officer of the project department will supervise it at any time.

4. Limit the maximum elongation of the trolley on the tower crane boom and the lifting, loading and transportation height of the hook. After measurement and inspection, the trolley can only be extended to the 45-meter scale mark range on the boom, the hook is hoisted after the material, the hook is raised to the highest height of the operation, and then the material is dropped after the specific lower position, so as to ensure that the trolley glides on the boom and the hook rises in height There is enough distance size to get out of the range of the high-voltage line blind road induced electric field. 5, strict tower crane transport operation, usually the height of the crane crane when the height of the hook must be more than 6 meters above the level of the high-voltage line, after work the tower crane driver and the commander to do a good job of inspection, the hook, wire rope position must also be more than 6 meters above the level of the high-voltage line.

6. Do a good job of attaching the wall of the tower crane in advance, and when the construction reaches the sixth floor of the above-ground structure, the attached wall of the tower crane is carried out, and the tower crane is raised to 35 meters at one time to ensure sufficient distance to avoid departing from the range of the induced electric field of the high-voltage line.

Dear Kiss I'm happy to answer for you, my answer is as follows: the wire rope sleeve on the big hook of the tower crane is 8 meters like a lack of rock, and the specifications are as follows: 1

The number of broken wires in the length of 6d is more than 10 in the length of the wire rope 6 37 d (the diameter of the wire rope in d) and more than 19 in the length of 30d. 2.The number of broken wires in the length of 6 19 days (diameter of the wire rope) of the wire rope 6 19 days is more than 5, and the number of broken wires in the length of 30d is more than 10.

3.The wire rope loses its normal shape and produces deformities, such as waves, cage distortion, rope strand extrusion, wire extrusion, local enlargement of rope diameter, kinking, partial reduction of rope diameter, flattening and bending of the collapsed burning part. 4.

Summary. The pro-tower crane clearly stipulates that it is forbidden to lift a steel wire.

Is there a clear regulation or specification for tower crane to be lifted with a wire rope.

The pro-tower crane clearly stipulates that it is forbidden to lift a steel wire.

Which is the norm I want to regulate.

Four criteria for the scrapping and replacement of tower crane wire ropes: 1The number of broken wires of wire rope 6 37 d (diameter of d wire rope) exceeds 10 within 6 days of length and 19 within 30 days.

2.The number of broken wires of the wire rope 6 19 d (the diameter of the wire rope of the ant hand d) is more than 5 in the length of 6d, and the number of broken wires is more than 10 in the length of 30d. 3.

The wire rope loses its normal shape and produces deformities, such as waves, cage distortion, rope strand extrusion, wire extrusion, local enlargement of rope diameter, kink, partial reduction of rope diameter, partial flattening, and bending. 4.Although the wire rope is not broken, the wear of the wire rope reaches 40% of its diameter, or the diameter of the wire rope is reduced by 7% or more compared to the male noise, or the wire rope is obviously bent.

That's not the case.

It is not allowed to hoist a single wire rope.

It is forbidden to lift a steel wire.

What I want is that there is no mandatory provision to prohibit the use of a wire rope for lifting.

It is expressly forbidden to use a single wire for lifting.

There must also be a prescribed document.

Open it for reference.

During construction, the tower crane encounters how to deal with the situation of the high-voltage line.

Hello, I am happy to answer for you: during the construction of the tower crane, the situation of the high-voltage line should be answered as follows: the safety distance of the high-voltage line is 4 meters; 2. The safety distance of the closed 1-10kv high-voltage line is 6 meters, the safety distance of the -110kv high-voltage line is 8 meters, the safety distance of the -220kv high-voltage line is 10 meters, and the full distance of the sedan chair along the -500kv high line is 15 meters.

What are the specifications of the wire rope sleeve on the hook of the tower crane in general a few meters, hello, 1. The wire rope is generally selected to be wound with tower crane accessories, so that it will not twist and loosen when lifting the goods, and there must be a quality certificate. 2. The wire rope for lifting red-hot or molten metal should be a high-temperature resistant wire rope with asbestos core. 3. The hoisting and luffing mechanism shall not use the wire rope with long braided joints.

Summary. Generally, the longest allowed is 8 meters of wire rope anti-groove device: it is to prevent the wire rope from jumping out of the groove during rotational operation, resulting in the wire rope being stuck, broken or grinding the shaft, and the hook accident.

Inspection of wire rope: severe deformation: wavy deformation, cage distortion, rope strand extrusion, wire extrusion, local increase, local diameter reduction, partial flattening, severe kinking, severe bending.

What are the specifications for the wire rope sleeve on the hook of the tower crane for a few meters.

Generally, the longest allowed is 8 meters of wire rope anti-groove device: it is to prevent the wire rope from jumping out of the groove during rotational operation, resulting in the wire rope being stuck, broken or grinding the shaft, and the hook accident. Inspection of wire ropes:

Severe deformation: wavy deformation, cage distortion, rope strand extrusion, wire extrusion, local increase, partial reduction in diameter, partial flattening, severe kinking, severe bending.

What specifications are used?

What specifications are used for rope clamps.

Just hang normally. There is no standard.

How can there be no standard.

There are only prescribed form numbers.

1. Driving wire rope: between specifications and models, there are specific and so on. 2. Hook wire rope:

The specifications and models are between 12mm-28mm, and there are 12mm, 16mm, 20mm, 24mm, 28mm and so on. 3. Hanging wire rope: between specifications and models, there are 11m, 15mm, and so on.

There is no rule on how to get a card.

What model is used for that.

Look above. So how long and how big should I buy a hoisting wire rope and rope clamp?

What are you hanging about?

6010 tower crane crane crane reinforced concrete.

Both.