The emulsion lifting crane (emulsion chain crane) uses emulsion as the power medium and combines the safety advantages of water-based hydraulic systems with the reliability of mechanical transmission. Its core advantages are reflected in four aspects: flame retardant and explosion-proof, environmental protection and high efficiency, economic applicability, and strong adaptability. The specific analysis is as follows:

1、 Flame retardant and explosion-proof: inherently safe design, suitable for high-risk environments

medium characteristics

The emulsion has a water content of over 95% and only contains 3% -5% emulsified oil particles, making it a non flammable liquid. Its flash point is much higher than that of mineral oil (such as 46 # hydraulic oil with a flash point of about 200 ℃), which can avoid fire accidents caused by hydraulic system leaks or high temperatures in scenarios such as coal mines where there is a risk of coal dust and gas explosions.

Application Cases

Crawler emulsion cranes use emulsion motors to drive the walking, rotating, and lifting arms, replacing traditional electric or hydraulic oil driven equipment and eliminating the risk of explosion caused by electric sparks or high-temperature oil mist from the root, becoming the preferred solution for underground operations.

2、 Environmentally friendly and efficient: low pollution, low energy consumption, in line with the trend of green manufacturing

Environmental performance

Leakage harmless: The main component of emulsion is water, and even if leaked, it will not pollute the soil or water source, while mineral oil leakage can cause soil compaction and eutrophication of water bodies.

Biodegradability: The base oil (such as No. 50 high-speed machinery oil) and additives (such as barium sulfonate rust inhibitor) in emulsified oil can be decomposed by microorganisms, reducing long-term environmental impact.

Energy efficiency advantage

Low compression loss: The compression coefficient of emulsion is 25% lower than that of mineral oil, with greater rigidity, which can compensate for the volume loss caused by leakage and improve the positioning accuracy of the system (such as hydraulic support support error can be controlled within ± 1mm).

Low viscosity loss: The viscosity of emulsion is only 1/3-1/2 of mineral oil, reducing the system's heat generation and increasing energy conversion efficiency by 10% -15%.

3、 Economically applicable: Whole life cycle cost optimization

Low medium cost

More than 95% of the emulsion is water, and the amount of emulsified oil only accounts for 3% -5%. Compared with all mineral oil hydraulic systems, the medium cost can be reduced by 70% -80%. For example, an emulsion crane with a rated load of 5 tons consumes approximately 1/5 of the annual emulsion cost of hydraulic oil equipment of the same specifications.

Low maintenance cost

Long service life of seals: Emulsion has lower corrosiveness to rubber sealing materials than hydraulic oil, and the replacement cycle of seals is extended by 2-3 times.

High system cleanliness: Rust inhibitors (such as zinc cycloalkanoate) in emulsions can inhibit metal corrosion, reduce hydraulic component failures caused by corrosion, and reduce maintenance frequency by 30%.

Long equipment lifespan

The working temperature of emulsion systems is usually below 60 ℃, while hydraulic oil systems may reach above 80 ℃. High temperatures can accelerate oil oxidation and component wear. The lifespan of key components such as chains and bearings in emulsion cranes can be increased by 20% -40%.

4、 Strong adaptability: covering multiple scenarios to meet the requirements of complex working conditions

Temperature adaptability

High temperature environment: By adding antioxidants (such as phenolic compounds), emulsions can work stably in environments above 50 ℃, avoiding oil oxidation and deterioration.

Low temperature environment: After adding ethylene glycol antifreeze, the solidification point of the emulsion can be reduced to below -30 ℃, which is suitable for cold northern regions.

Water quality compatibility

The water used to prepare emulsions must meet the following standards:

PH value 6-9.6: Avoid acidic water corroding metals and alkaline water damaging emulsion stability.

Chloride ions<200mg/L, sulfate ions<400mg/L: prevent calcium and magnesium ions in hard water from reacting with emulsifiers, leading to soap precipitation and emulsion breaking.

Through automatic proportioning devices such as electromagnetic unloading valves and flow sensors, the emulsion concentration can be adjusted in real time to ensure stable performance during water quality fluctuations.

Wide load coverage

The rated load range of emulsion cranes is usually 1-10 tons, which can be adapted for light material handling (such as coal mine support materials) to medium-sized equipment lifting (such as underground transformers). Through modular design (such as replaceable chains and sprockets), the load capacity can be flexibly adjusted.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment