The A11VO series is a type of axial piston variable pump by Rexroth, designed for hydraulic transmission in open - loop circuits. It is mainly used in the field of mobile machinery. The pump can work under self - priming conditions, with a pressurized oil tank, or equipped with a built - in booster pump (centrifugal pump).
Product Features
- Proportional Flow Output: The output flow is proportional to the driving speed and can be steplessly adjusted between the maximum value and zero.
- Versatile Controls: It offers a variety of control methods to meet different operating requirements.
- Through - Shaft Drive: It is equipped with a through - shaft drive, which can be fitted with a gear pump or an axial piston pump of the same specification (99% through - shaft drive).
Working Principle
Torque from the engine is applied to the drive shaft of the pump. The cylinder rotates with the drive shaft, causing the pistons to rotate as well. On each rotation, the pistons perform a stroke movement defined by the pitch of the swashplate, thereby generating, controlling, and regulating the hydraulic fluid flow.
Applications
This series of pumps is widely used in various mobile machinery, such as excavators, rotary drilling rigs, concrete pump trucks, coal mining machines, etc. It provides the necessary hydraulic power for the working equipment of these machines, enabling them to complete tasks such as lifting, digging, and rotating.
Construction Machinery
- Concrete Pump Trucks: They provide the necessary hydraulic power for the boom system and concrete delivery mechanism, enabling accurate and efficient concrete pouring.
- Scraper Machinery: They drive the working devices such as the scraper bowl and transmission system, helping to complete tasks like earthmoving and transporting.
- Road Machinery: In road rollers and pavers, they power the vibration and driving systems, ensuring the quality of road construction.
Mining Equipment
- Excavators: They supply hydraulic energy for the movement of the boom, arm, and bucket, allowing for efficient digging and material handling.
- Coal Mining Machines: They are used in shearers and roadheaders to provide power for cutting, conveying, and moving mechanisms.
Agricultural Machinery
They are applied in agricultural equipment such as tractors and harvesters. They power the hydraulic systems that control the lifting and tilting of agricultural tools, as well as the operation of harvester headers.
Ship-building Industry
In ship - building, they are used in the hydraulic systems of ship - building cranes and ship - launching equipment. They provide the necessary power for lifting heavy objects and adjusting the position of ships during launching.
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