In the fast-paced evolution of industrial production and engineering construction, mechanical equipment places increasingly high demands on the power output efficiency, stability, and adaptability of hydraulic systems. As the "power core" of a hydraulic system, the hydraulic pump directly determines whether the equipment can operate continuously and efficiently under high-intensity working conditions. To meet the urgent market demand for high-efficiency hydraulic pumps, Liyuan Hydraulic, leveraging decades of hydraulic technology accumulation and innovative capabilities, has launched the newly upgraded A8V Series Swashplate Axial Piston Variable Double Pumps.

Building on the foundation of traditional single pumps, this series achieves dual-pump collaborative innovation, integrating high-efficiency variable technology, reinforced structural design, and precision manufacturing processes. It not only provides more powerful and stable power support for various mechanical equipment but also breaks through the efficiency bottlenecks of traditional hydraulic pumps with three core advantages—"high efficiency and energy conservation, flexible adaptability, and durability and reliability"—helping users achieve new heights in equipment operating efficiency.

The core breakthrough of Liyuan Hydraulic's A8V Series Swashplate Axial Piston Variable Double Pumps lies in the innovative adoption of a "dual-pump parallel connection + intelligent variable" design, achieving a comprehensive upgrade from the power output mode to energy utilization efficiency. Compared with traditional single pumps, this series of double pumps can output double the flow rate under the same working conditions through collaborative operation. Moreover, the two pumps feature independent variable adjustment, which can accurately distribute the hydraulic oil flow rate and pressure according to the power requirements of different operating modules of the mechanical equipment.

For instance, when an excavator simultaneously performs digging and slewing operations, the A8V Series Double Pumps can separately provide adaptive power for the working device and the slewing mechanism. This avoids the problem of uneven power distribution caused by a single pump having to "handle multiple tasks," making the digging action more powerful and the slewing response more rapid. As a result, the single operation cycle time is shortened by more than 15%.

In terms of variable adjustment technology, the A8V Series Double Pumps are equipped with an independently developed intelligent electro-hydraulic proportional variable mechanism by Liyuan Hydraulic. This mechanism can receive real-time load changes of the equipment through electronic signals and automatically adjust the displacement to achieve "on-demand energy supply." When the equipment is under light-load operations (such as material handling), the double pumps automatically reduce the displacement to minimize power loss, resulting in a 20%-25% reduction in energy consumption compared to traditional fixed-displacement pumps. When the load suddenly increases (such as digging hard rock), the double pumps can quickly increase the displacement and pressure within 0.3 seconds, with a maximum working pressure of up to 45MPa, ensuring timely power supply and preventing "powerlessness and jamming" of the equipment.

Third-party testing data shows that the volumetric efficiency of the A8V Series Double Pumps remains stable above 96%, and the total efficiency exceeds 93%, which is an 8%-10% improvement compared to similar double-pump products in the industry. Taking a heavy-duty loader with a daily operation time of 10 hours as an example, after being equipped with this series of double pumps, the fuel consumption per unit of operation is reduced by 18%, saving more than 20,000 yuan in fuel costs annually. At the same time, it reduces equipment heat generation, lowers the cooling load of the hydraulic system by 30%, and extends the service life of hydraulic oil to more than 5,000 hours.

To ensure the stable operation of the double pumps under high-intensity and complex working conditions, the A8V Series Swashplate Axial Piston Variable Double Pumps have undergone comprehensive enhancements in structural design and manufacturing processes. In terms of the core structure, this series of double pumps adopts an integrated swashplate cylinder block design, with the pistons and cylinder block arranged at an inclination angle of 18°-25°. Combined with a high-strength alloy transmission shaft, it effectively distributes the radial and axial forces generated during operation, reducing component wear. The vibration amplitude of the pump body is controlled within 0.15mm, and the operating noise is as low as 72 decibels, creating a more stable operating environment for the equipment.

Meanwhile, the double pumps adopt an independent oil passage design, ensuring that the hydraulic oil of the two pumps does not interfere with each other. This prevents the entire hydraulic system from breaking down due to a single pump failure, improving the operational reliability of the equipment.

In the manufacturing of key components, Liyuan Hydraulic implements strict quality control standards. The pistons are made of 38CrMoAlA high-strength alloy steel, and after nitriding treatment, the surface hardness reaches above HV900, with wear resistance improved by 40% compared to ordinary steel. The cylinder block is made of QT700-2 ultra-high-strength ductile iron, with a compressive strength exceeding 700MPa. After precision processing by a five-axis machining center, the inner hole roughness reaches Ra0.1μm, and the matching gap with the piston is accurately controlled between 0.002-0.004mm, greatly reducing the risk of hydraulic oil leakage.

In addition, the A8V Series Double Pumps are equipped with a dual filtration and anti-pollution system. The oil suction port uses a 10μm high-precision filter screen, and the oil return port is equipped with an additional magnetic filtration device. These can effectively intercept impurity particles and metal debris in the hydraulic oil, protecting the core components from wear. In extreme working condition tests, this series of double pumps operated continuously for 800 hours under an overpressure condition of 45MPa without significant damage to the core components. After being stored for 48 hours in an extremely cold environment of -30℃, the startup success rate was 100%. When operating continuously for 5,000 hours in a mining environment with a dust concentration of 1.2mg/m³, the hydraulic system ran stably, fully verifying its durable and reliable quality.

With its efficient power output and stable performance, Liyuan Hydraulic's A8V Series Swashplate Axial Piston Variable Double Pumps have achieved coverage across multiple fields. They provide customized power solutions for various mechanical equipment such as construction machinery, metallurgical equipment, mining machinery, and heavy machine tools, helping users in different industries improve equipment operating efficiency.

In the field of construction machinery, the A8V Series Double Pumps have become the preferred hydraulic power source for large excavators, crawler cranes, and concrete pump trucks. Taking a 30-ton excavator as an example, after being equipped with this series of double pumps, the bucket digging force is increased by 22%, and the maximum digging radius is increased by 1.5 meters. In deep foundation pit excavation operations, the daily operating volume is increased by 25%. After five concrete pump trucks of a construction enterprise adopted this series of double pumps, the concrete delivery volume remained stable at 80m³/h, an increase of 30% compared to traditional pump trucks. Moreover, during long-distance delivery of 300 meters, the pressure loss is reduced by 15%, effectively avoiding pipe blockage.

In the field of metallurgical equipment, the A8V Series Double Pumps are suitable for high-precision equipment such as wide and heavy plate rolling mills and continuous casting machines. Wide and heavy plate rolling mills have extremely high requirements for the pressure control accuracy of the hydraulic system. The pressure fluctuation range of this series of double pumps is controlled within ±0.3MPa, which can provide precise power for the roll gap adjustment of the rolling mill. As a result, the thickness deviation of the rolled steel plate is controlled within ±0.05mm, and the product qualification rate is increased by 3%. After a continuous casting production line of a steel enterprise adopted this series of double pumps, the vibration frequency of the crystallizer remained stable at 200-300 times per minute, the surface quality of the cast billet was significantly improved, and the rejection rate was reduced by 2.5%.

In the field of mining machinery, relying on its high-pressure resistance and wear resistance characteristics, the A8V Series Double Pumps are suitable for equipment such as mining crushers and large dump trucks. After ten jaw crushers in a mine were equipped with this series of double pumps, the crushing force was increased by 18%, enabling them to handle ores with a hardness of f=15, and the hourly crushing volume was increased by 30 tons. After mining dump trucks adopted this series of double pumps, the lifting time was shortened to 25 seconds, an increase of 40% compared to traditional equipment, and the daily number of transportation trips was increased by 15, significantly improving the mine transportation efficiency.

Liyuan Hydraulic not only provides excellent quality for the A8V Series Swashplate Axial Piston Variable Double Pumps but also has built a full-cycle service system. From selection and adaptation to after-sales maintenance, it provides comprehensive support for users throughout the process.

In the selection stage, Liyuan Hydraulic's professional technical team will gain an in-depth understanding of the user's equipment parameters, operating conditions, and power requirements. Through hydraulic system simulation, they will customize the optimal double-pump selection plan for the user and provide detailed technical parameter manuals and installation drawings to ensure accurate adaptation of the product.

In the installation and commissioning stage, technical engineers can provide on-site guidance for the installation of the double pumps, assist in completing the hydraulic system pipeline connection and parameter debugging, ensure seamless connection between the double pumps and the equipment, and make the operating parameters reach the optimal state. At the same time, they provide special training for the user's operators, explaining the working principle of the double pumps, operating specifications, and daily maintenance points to help users use the equipment correctly.

In terms of after-sales maintenance, Liyuan Hydraulic relies on more than 30 service stations across the country and a 24-hour service hotline to achieve rapid response. When users encounter problems, technical personnel provide online answers within 24 hours and arrive at the site within 48 hours (except for remote areas). This series of double pumps enjoys an extended warranty period of 18 months. During the warranty period, free repair or replacement is provided for quality problems. At the same time, lifelong technical support is offered, with regular return visits to users and maintenance suggestions provided to ensure the long-term stable operation of the double pumps.

As the core product of Liyuan Hydraulic's high-efficiency hydraulic solutions, the A8V Series Swashplate Axial Piston Variable Double Pumps inject powerful power into various mechanical equipment with their significant advantages of "high efficiency and energy conservation, durability and reliability, and flexible adaptability," helping users reduce costs and increase efficiency. In the future, Liyuan Hydraulic will continue to deepen hydraulic technology innovation, continuously optimize product performance, and launch more high-efficiency hydraulic products that meet market demands, contributing more to the high-quality development of the industrial sector.