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Application scheme of lateral pressure sensor on lifting machinery
Category:
Engineering Machinery Solutions
Publish Time:
2021-03-01
Application of Side-Pressure Sensors in Lifting Machinery
China is known as a "construction maniac." Lifting machinery plays a crucial role in the construction industry. Cranes are mainly divided into light and small lifting equipment, bridge-type (bridge, gantry cranes), boom-type (self-propelled, tower, gantry, railway, floating, mast cranes), and cable cranes. 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 hoisted materials while operating. With the advancement of digital technology, especially electronic weighing technology, the mechanization, automation, integration, and intelligence of lifting machinery have been promoted. Weighing devices on lifting machinery are usually divided into two categories according to their functions: electronic crane scales and special weighing devices. Special weighing devices mainly refer to overload limiters. GB6067-85 The "Safety Regulations for Lifting Machinery" stipulates that bridge cranes greater than 20t and gantry cranes greater than 10t should be equipped with overload limiters; other tonnage bridge and gantry cranes, as well as electric hoist single or double-beam cranes, should be equipped with overload limiters. The core component of the weighing device is the load cell.
Load cells are widely used in lifting equipment , Mainly used in the manufacturing of crane 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. Because the error of this system should not exceed ± 5% , the accuracy requirement for the sensor is not high, generally meeting 0.1%-0.5% is sufficient. However, the safety, long-term stability, and overload capacity of the sensor must be given great importance.
Side-pressure sensor
Side-pressure sensor is a pressure sensor with high reliability, good interchangeability, and ease of use, suitable for the measurement and control of steel wire rope tension , so it is also called a tension sensor. The steel wire rope is fixed to the sensor through a U -shaped bolt. When the steel wire rope is under tension, the force acts on the sensor through the guide wheel. This series of sensors are mainly suitable for overload control and process display in lifting, water conservancy, and coal mining industries.
Keywords: Crane safety monitoring system, side-pressure sensor
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