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Electric rotary small crane can be removed

Oct 21, 2017

Hello, the main parameters of crane are the parameters of the main technical performance indexes of cranes, which are the basis of crane design and the important basis for the safety and technical requirements of heavy machine.

The weight of the G

The weight refers to the mass of the lifting weight, the unit is kg or t.

Can be divided into rated weight, maximum weight, total weight, effective weight, etc.


Rated weight Gn

The weight is rated as the lifting material of the crane, together with separable lifting tools or fittings (such as grab, magnetic sucker, balance beam, etc.).


Total weight Gz

Total up the weight of crane to lift the material together with the separable spreader and long-term fixed on the crane sling and play (including the hook, pulley block and lifting wire rope and other lifting under lifting trolley) the quality of the total.


Effective weight Gp

The net quality of the material which can be hoisted by the crane is effective.

The parameters need to be explained as follows:

First, the lifting weight on the sign of the crane usually refers to the weight of the crane, which should be clearly indicated in the obvious position of the crane structure.

Secondly, for boom type cranes, the rated weight of the crane is changed with amplitude, and its hoisting characteristics are characterized by lifting torque.

The nominal value on the sign is the maximum weight.

Third, the belt can be divided into sling (e.g., grab, magnetic chuck and balance beam, etc.) of the crane, the hook and material quality of total rated lifting weight, allows the weight lifting the quality of the material is effective.

Hoisting height H

Lifting height refers to the vertical distance of a crane operating the upper surface of the track (or ground) to the extreme position of the taking device, and the unit is m.

When using the hook, the hook hook ring center is used.

When using grab and other containers, calculate the bottom of the container.


Descending depth h

When the device can be placed below the ground or the top of the track, the distance of its devolution is known as the depth of descent.

The vertical distance between the minimum working position and the horizontal supporting surface of the crane.

2. Rise range D

The lifting range is the sum of lifting height and depth of descent, which is the vertical distance between the highest and lowest working positions.

The span of S

Span refers to the horizontal distance between the center line of a bridge type crane and the unit is m.

The distance between the trolley of the bridge type crane and the center line of the trolley is called the track of the trolley.

The distance between the center line of the running track of the moving arm crane is called the orbital distance of the crane.

I hope I can help you.