Many customers (kè hù) have a headache for the scientific and rigorous definition of the complex parameters of cranes. They want to understand the purchase of cranes but do not really understand them. Some of the working characteristics of cranes are intermittent movement, that is, the corresponding mechanisms for reclaiming, transporting, and unloading in a working cycle are alternately working. The development and use of cranes in the market are becoming more and more extensive. In the spirit of being serious and responsible for the majority of new customers (kè hù), the editor based on many years of experience (experience), to explain the crane easy to understand to everyone, hoping to give you substantial help. 1. What is a crane? In fact, it is classified according to the utilization level of the crane and the load status of the crane. Electric hoist is a kind of special lifting equipment, installed on overhead cranes and gantry cranes. The electric hoist has the characteristics of small size, light weight, simple operation and convenient use. It is used in industrial and mining enterprises, storage, docks and other places. The job level of the whole machine is less than or equal to the job level of its lifting organization. 2. When reaching the purchase intention (explanation: heart direction, intention), payment and signing of the contract (contract), the crane needs to be equipped with: lifting weight, lifting height, span (paraphrase: generally refers to distance), various institutions ( Organization) job (job) speed, job (job) level and other parameter data (data). 3. According to the structure (Structure), it is generally divided into two categories: bridge cranes and gantry cranes. Bridge cranes include electric double-beam bridge cranes and electric single-beam bridge cranes. Gantry cranes are divided into Electric hoist single-beam gantry crane and electric double-beam gantry crane.

When the problem of the reducer (divided into gear reducer, worm reducer, etc.) in the bridge crane occurs, the traditional way in the past (chuán tǒng) is repair welding or brush plating repair, but no matter which type, there are certain problems. Disadvantages. The electric hoist has a compact structure, and the electric hoist whose motor axis is perpendicular to the axis of the drum adopts a worm gear transmission device. Its disadvantages are: large length dimension, large width dimension, rough structure, low mechanical efficiency, and difficult processing. The hydraulic system is dual-controlled, and the pressure can be precisely controlled by the overflow regulating valve and the magnetic contact pressure gauge. The electrical control department adopts low-voltage control, which increases the safety of the control system. The cantilever crane is an industrial component and a light-duty work-strength crane. It is composed of a column, a swing arm slewing drive device and an electric hoist. It has a light weight, a large span, a large lifting weight, and is economical and durable. For example, repair welding is prone to produce unremovable thermal stress, causing deformation or fracture of the assembly unit; while repairing by brush plating is easily limited by thickness, and the problem is still not fundamentally solved. So the best way is to change the make of the reducer components (Material) and replace it with a polymer (Molecule) HDPE material (replace one substance with another (mostly the strong replace the weak) ), so that it will neither be affected by the thermal stress of repair welding nor be limited by the repair thickness. The most important thing is that it can avoid the possibility of re-wear (a basic type of component failure), and greatly The use cycle of the reducer is increased, and the occurrence of fault (fault) rate can also be reduced for bridge cranes.

With the continuous development of ports and docks, the demand for port crane equipment (shèbèi) is also increasing, and the requirements for lifting equipment are also getting higher and higher. In port cranes, we all know that portal cranes are one of the most popular lifting equipment. However, there are different types of portal cranes. Today, I will introduce the characteristics and roles of port multi-purpose portal cranes.