Anchor Frame Collar 1.6m For L48A3 Mast

Products Specification

Type , Model: Anchor Frame Collar 1.6m For L48A3 Mast

Size: 1.6m for 1.6M L type mast

Materials: Q345B

Process: Blasting derusting, 

Painting:  Under painting , Middle painting, Surface painting.

Our factory produce and supply almost all famous brand tower crane :Mast section, Anchor Frame, Fixing angle ,Adaptor and so on as good quality and price.

Anchor Frame Collar 1.6m For L48A3 Mast

Tower Crane Knowledge sharing：

Causes and solutions of electrification of tower crane hooks

The bubble is very bright when using the measuring pencil to touch the hook. The air bubble is very bright when using the multimeter ac voltage to measure the hook to the ground voltage. At that time, some people think that whether there is a certain electrical line leakage contact with the lifting mechanism

Lifting mechanism for some reason and the tower electrical connection is bad, leakage through the lifting wire rope to reach the hook, the workers in the hanging rope contact the hook and the possibility of electric shock.

Anchor Frame Collar 1.6m For L48A3 Mast

For this reason, we also removed the power supply wire of the tower crane and then checked the above phenomenon. Therefore, we concluded that there was another reason for the live wire of the hook, and the possibility of high frequency induction was extremely high.

However, this explanation does not make sense here and is generally not considered to have a high-power radio transmitter in the living area. A man happened to live nearby. He said that there were several towers not far from here, so we rode a bike to look for them. We found the tower in a place more than 1km away from the construction site.

This supports our judgment. Therefore, we take the following measures to ensure safe production

Anchor Frame Collar 1.6m For L48A3 Mast

1. It is required that the rope personnel must wear rubber insulated shoes and rubber gloves to insulate the human body from the ground and hook at the same time

2. 2. Purchased a set of special nylon pulley for hook rack from the manufacturer

3. Explain the reason to relevant personnel to eliminate the fear, and ask them to be careful not to touch the lifting wire rope

The tower crane is allowed to resume production after the above treatment. We analyzed and discussed:

The reason and discrimination of the induced voltage of the hook

Forearm tower the earth wire of the land, the tower crane, tower, forearm, falling hoisting rope and hook, forming a close approximation of large cross section conductors

when the box with alternating electromagnetic field , will be induced voltage between the hook with the ground, when the alternating electromagnetic field intensity, the greater the hook with the ground between the induced voltage.

Anchor Frame Collar 1.6m For L48A3 Mast

And the radio wave is the alternating electromagnetic field, when there is a high-power radio station nearby, this kind of induced voltage will reach a certain value, the larger the transmitting power is.

the closer the distance is, the larger the effective section of the conductor frame is the higher the tower is, the farther the car is, the more perpendicular the section is to the radial direction of the transmitting source, the higher the induced voltage is.

At this point, the human body contact with the hook and the ground will have current through the human body, making people feel electric shock. The higher the induced voltage, the smaller the resistance value of the human body itself and the contact with the ground .

This kind of electric current usually won't cause personnel electric shock casualty directly, but because human body's instinctive reaction -- such as draw back, retreat, jump, panic, cause the person body injury such as fall, fall, bump, intense stimulation likely to hurt, reason still needs to take precautions.

Anchor Frame Collar 1.6m For L48A3 Mast