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Application scheme of crane scale sensor in lifting machinery
Category:
Engineering Machinery Solutions
Publish Time:
2021-03-01
Application scheme of crane scale sensor in lifting machinery
China is known as the "infrastructure maniac." Lifting machinery plays a crucial role in the infrastructure sector. Cranes are mainly divided into light and small lifting equipment, gantry type (gantry, portal cranes), jib type (self-propelled, tower, gantry, railway, floating, mast cranes), and cable type. Lifting machinery lifts or lifts and moves heavy objects through lifting hooks or other lifting devices. The working process of lifting machinery generally includes lifting, running, lowering, and returning to the original position.
Lifting machinery includes a drive device and a weighing device. The drive device is a power device used to drive the working mechanism. The weighing device enables the lifting machinery to weigh the lifted materials while operating. With the advancement of digital technology, especially electronic weighing technology, it has promoted the mechanization, automation, integration, and intelligence of lifting machinery. Weighing devices on lifting machinery are usually divided into electronic crane scales and special weighing devices according to their functions. Special weighing devices mainly refer to overload limiters. GB6067-85 "Safety Regulations for Lifting Machinery" stipulates that bridge cranes larger than 20t and portal cranes larger than 10t should be equipped with overload limiters; other tonnage bridge and portal cranes and electric hoist single or double-beam cranes should be equipped with overload limiters. The core component of the weighing device is the weighing sensor.
Weighing sensors are widely used in lifting equipment, mainly used in the manufacturing of lifting electronic scales, overload limiters, and torque limiters.
Several types of sensors are mainly used in the weighing system, including pin type, fish back type, plate ring type, side pressure type, and bearing seat type. Since the error requirement of this system does not exceed ±5%, the accuracy requirement for the sensor is not high, generally 0.1%-0.5% is sufficient. However, the safety, long-term stability, and overload capacity of the sensor must be paid great attention to.
Crane scale sensor
Crane scales have good dynamic weighing performance and are not affected by the shaking of the weight. It is mainly composed of a hook, shackle, all-steel shell, front cover, rear cover, sensor, and protective plate. It can be widely used in ports, transportation, metallurgy, steel market, building materials market, warehousing, coal, papermaking, and industrial and mining enterprises for cargo handling measurement, process measurement, raw material input and output measurement, and warehouse inventory measurement.
Keywords: Crane safety monitoring system, hook scale sensor
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