Anchor Frame Collar 1.6m For L48A1 Mast

Products Specification

Type , Model: Anchor Frame Collar For 24A1 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 L48A1 Mast

Tower Crane Knowledge sharing：

Causes and solutions of electrification of tower crane hooks

Hook is a necessary tower crane accessories, may appear in the use of the phenomenon of electrified tower crane hook, when the human body contact with the hook there is a feeling of electric shock. When light, just feel hemp hemp or have electric shock feeling only when the back of the hand contacts condole hook, grab condole hook directly with the hand without feeling

The heavy has a strong sense of paralysis, so that people have an instinctive reaction, causing fear, and even in the contact parts will be burned out a small white spot, hook contact with the ground connection to the metal body will send out sparks.

Anchor Frame Collar 1.6m For L48A1 Mast

Generally, people will think that it is caused by the leakage of electricity in the tower crane, but the inspection of the electrical system of the tower crane.

including the line, the insulation resistance of the motor to the ground, the grounding resistance of the tower body, the motor shell, the electrical box and the quality of the leakage circuit breaker, etc., the results are very normal, there is no suspicious, then it is suspected that it is caused by high-frequency induction.

Anchor Frame Collar 1.6m For L48A1 Mast

But the specific reason is not very clear, especially some of the mechanical and electrical professional construction site personnel are not even understand, thought it was a tower crane the lessor alibi, causing both sides in the conflict when using and expense settlement, is combined with some examples to explore the reason and disposal methods of electricity in hook.

I plant customers used the tower crane has happened this matter, in the general time there is a live phenomenon of the hook, especially in the wet ground after the rain, the rope staff in the hanging rope when the electric shock is very strong.

Anchor Frame Collar 1.6m For L48A1 Mast

For mechanical and electrical maintenance personnel measured the grounding resistance of tower crane is 0.8 Ω, tower crane power line to ground insulation resistance is 2.8 M Ω, motor and the shell of the insulation resistance is 3.5 M Ω are within the normal range, distribution box of the residual current circuit breaker trip occurred.

so judgment is caused by high frequency induction. To this end, according to the requirements of jgj33-86 (now jgj33-2003) of the safety technical regulations for the use of construction machinery, it is required that the sro personnel should wear insulating shoes and gloves before operation. But after more than a month, the live phenomenon

Anchor Frame Collar 1.6m For L48A1 Mast disappeared.

At first we were puzzled, but then we came across a report in the local evening newspaper. The report said that a department of the people's liberation army (PLA) had set up a radio station on a hill about 1-2km away from the construction site to coordinate with the exercise.

A QTZ120 tower crane was installed and used in 2003. The initial installation height was low and the weather was dry at that time. There was no rain for a long time and the tower crane was in normal use. All of a sudden one morning just went to work.

 I received a call from the site management personnel, the report said: there is a tower crane department cable workers in the hook when electric shock nearly caused personnel injury accident, now the tower crane has stopped using, we request immediate solution. For this reason, we immediately organized relevant personnel to bring detection instruments to the site, the site and the tower crane for inspection

Because the night before rain on the ground there is a little water, electric shock workers on the palm of a small piece of electric shock small white spot; Tower crane tower lower ground resistance measurement is 0.5 Ω, motor terminal for housing insulation resistance is 2.7 M Ω, line up to 2.1 M Ω insulation resistance, power supply voltage of 389-391 v three-phase equilibrium

Anchor Frame Collar 1.6m For L48A1 Mast