Analyze the needs of heavy industry enterprises for overhead cranes from a professional perspective

Posted on March 1, 2024March 1, 2024 by pkcraneyt

Generally speaking, heavy industry enterprises focus on manufacturing large machinery and equipment, such as excavators, loaders, cranes, etc. The enterprise has multiple production workshops and warehouses, involving multiple links such as raw material warehousing, processing, assembly, testing, and final product outbound. The raw materials mainly include various steels, castings, components, etc., which are of high weight and diverse shapes. The product is a heavy-duty mechanical equipment with large volume and heavy weight, which requires high requirements for handling and lifting.

Table of Contents

Analysis of usage scenarios for bridge cranes

Raw material warehouse: Bridge crane is used to remove large raw materials from the warehouse and transport them to the production workshop.
Production workshop: In the production workshop, bridge cranes need to move components from one process to another, such as welding, assembly, painting, etc.
Finished product warehouse: The assembled heavy machinery and equipment require a bridge crane for lifting and stacking.

Specific needs for overhead cranes

Lifting capacity: Considering the product characteristics of heavy industry enterprises, the lifting capacity of cranes is required to be 20-50 tons, or even larger.
Span: According to the layout and process flow of the workshop, the span requirement of the crane is between 20-40 meters.
Working level: The production environment of heavy industry enterprises requires cranes to have high strength and stability, so the working level should be A7 or A8.
Precision and stability: When hoisting and transporting heavy machinery and equipment, cranes are required to have high precision and stability to ensure product safety and product quality.
Protection level: Considering the production environment of heavy industry enterprises, the protection level of the crane should be IP65 or above to withstand harsh conditions such as dust and water droplets.
Safety and reliability: Cranes must have complete safety devices and fault warning systems to ensure the safety of operators and equipment.
Intelligence and automation: It is hoped that the crane will have a certain degree of intelligence and automation functions, such as automatic positioning, intelligent identification, etc., to improve production efficiency and reduce operating difficulty.

Other considerations

Energy saving and environmental protection: On the premise of meeting production needs, cranes should try to adopt energy-saving and environmentally friendly designs and technologies.
After-sales service: Manufacturers should provide comprehensive after-sales service and technical support to ensure the long-term and stable operation of the crane.

Parameters of a double-girder bridge crane purchased by a heavy industry factory in China

Model: QD-20/5T-25M

Lifting capacity:

Main hook: 20 tons
Auxiliary hook: 5 tons

Span: 25 meters

Lifting height:

Main hook: 12 meters
Auxiliary hook: 14 meters

Work level: A7

Power supply: three-phase AC 380V, 50Hz

Control method:

Ground remote control (optional)
Driver’s cab operation (optional)

Operating speed:

Crane running speed: 25m/min
Car running speed: 20m/min
Main hook lifting speed: 12m/min
Auxiliary hook lifting speed: 15m/min

Structural features:

The main beam adopts a box structure and is made of high-strength steel to ensure the stability and load-bearing capacity of the crane.
The car adopts a dual drive mode to ensure smooth and accurate operation.
The lifting mechanism adopts advanced reducers, which have high efficiency and simple maintenance.
Equipped with an intelligent electrical control system, achieving precise control and fault diagnosis of cranes.

Safety devices: