Magnetic伸缩displacement sensor application in waste collection equipment

As people's living standards continue to rise, so does their demand for environmental conditions. Traditional urban and rural garbage stations no longer meet the new concepts of environmental protection, energy conservation, and low consumption. Therefore, the promotion of compact garbage stations is imperative. Compact garbage transfer stations, with their small land occupation, rational spatial structure, strong sealing, and high garbage processing efficiency, have been widely applied, especially fixed-type garbage compression equipment.

A key indicator of a compacting station is the compaction rate. To ensure the compaction rate, a pressure maintenance period is required once the ram reaches a certain stroke. Then, the ram retracts while unloading, and a new cycle begins until full compaction is achieved. However, detecting the compaction rate and determining when it's fully compacted without a weight sensor presents a challenge.

To achieve the stroke control for the head reciprocation, a magnetostrictive displacement sensor is required. Perform a conventional compression cycle, holding pressure at certain strokes of the head advancement, and then retract after the holding time is reached. Set different holding times at various strokes of the head advancement. When the compression chamber is about to be filled, push several times consecutively to obtain a full signal.

With the adoption of this electrical control technology, the volume of the control unit is significantly reduced, costs are lowered, the safety working environment for sanitation workers is improved, labor intensity is alleviated, and work efficiency is increased, thereby effectively achieving a higher level of automation in the waste transportation process.

The garbage compactor equipment operates in harsh environments, which may expose the oil cylinder to frequent contact with oil and water, necessitating protective measures for the displacement sensor. Additionally, being a dual-earring oil cylinder with space limitations on site, a magnetostrictive displacement sensor product was utilized.

The entire sensor is fully embedded within the cylinder, with only a high-protection connector left on the cylinder side.

The magnetostrictive displacement sensor is specifically designed for built-in installation in hydraulic cylinders, offering an ideal displacement measurement solution for compact hydraulic cylinders with limited space. The sensor features a wider operating temperature range, suitable for various industrial applications.

Compared to proximity switches or pull绳 encoders used on garbage compactor trucks, magnetostrictive displacement sensors offer distinct advantages:

Touchless measurement, longer lifespan

Fully embedded within the cylinder, offering higher protective performance.

Higher linear accuracy ensures the synchronous operation of the two hydraulic cylinders.