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How to properly use the crane hook and routine inspection measures

How to properly use the crane hook and routine inspection measures

[Abstract]:
The hooks of cranes are often used, and the losses are very large. Then, in use, what aspects should we pay attention to, and at the same time, how do we handle the hooks? Here are some methods we wil

The hooks of cranes are often used, and the losses are very large. Then, in use, what aspects should we pay attention to, and at the same time, how do we handle the hooks? Here are some methods we will introduce.

One, the correct way to use the crane hook

1. When we lift heavy objects, heavy objects should be in the middle of the hook hooks.

2. When we start lifting, we must be steady, so that there will be no excessive impact and excessive load.

3. We must keep the surface of the hook clean and smooth. We must not have peeling or sharp corners, let alone burrs and cracks.

Second, check the hook

1. We not only conduct regular inspections of the hooks but also carry out daily inspections. These two types of inspections are indispensable.

2. The use department is mainly responsible for daily inspections. When the crane driver conducts the shift, he must first check the hook and make a record on the machine usage log. When using the department to carry out weekly inspections of the machine, the hooks should also be inspected. When inspecting the hook, the main inspection is the appearance, including the following aspects:

(1) Take a look at the appearance of cracks, cracks, and deformation.

(2) Have a look at the security effects of each card board?

(3) Check if each screw is loose.

(4) See if each pulley and bearing is still flexible.

(5) Take a look at each lubrication point, is it normal lubrication?

(6) Observe to see if there are other abnormalities.

(7) Visually check the degree of opening of the hook with the eye and the degree of distortion. If abnormal conditions are found, use an instrument to perform regular measurements to ensure the safe use of the crane.

Third, regular inspection of the crane must be carried out by a qualified maintenance department

During regular inspections, the hooks must be disassembled and must be repaired and measured. In principle, the hooks of the two types of cranes, the door seat and the fixed type crane, must be used for a total of one year before they are checked. The time for the use of the hook is counted by the use department and the use department is required to apply for inspection. Tire cranes and other crane hooks are also used. When carrying out two-guarantee inspections, they are checked twice each and the time is consistent with Erbao. Items that are regularly checked include:

1. Look at the increase in mouth opening at the hook.

2, look at the hook twisting changes.

3. Check the hook hooks to see if they are worn.

4, check the hook hook to see if it is in good condition, and then see if there is a dangerous section.

Fourth, hook repair and scrap standards

1. If there is any defect on the hook, it must not be repaired.

2、Hook rejection standard

If the hook has the following conditions, as long as there is one, it must be scrapped.

(1) If the mouth of the hook exceeds the nominal size of 15%, it must be scrapped.

(2) The hook is distorted. If the deformation is greater than 10 degrees, it must be scrapped.

(3) The hook seat of the hook is worn out, and if the wear exceeds 10% of the project size, it must be scrapped.

(4) Plastic deformation of the neck of the hook or plastic deformation of the dangerous section must be scrapped.

(5) If the hook has cracks or cracks on the surface, it must be scrapped.