Hydraulic Pumps and Their Role Within Construction Equipment

2335 Views 9 Liked Posted on: 2022-10-24
By Natalia Przeszłowska

The hydraulic circuit of any construction machine is a broad and complex subject matter.  The energy that's collected in a liquid allows an effortless management of high  tension and mass levels that construction machines very frequently utilise. Thus, their own hydraulic circuit is used to manage the energy sourced from the hydrauli fluid. Thanks to various kinds of hydraulic power systems, dedicated to backhoe loaders, excavators, mini-excavators or loaders - all scheduled work can be done swiftly and thoroughly. But what is the exact role of the hydraulic power circuit and what role does it play in any particular construction equipment?

The hydrauluc power assortment group consists of rams, hydraulic motors, main valves, valves, steer valves, hoses and hydraulic pumps. Hydraulic circuits  are characterized by their strict enclosure. The hydraulic liquid - most frequently an oil - is responsible for their proper functioning and performance. A hydraulic pump is responsible for transfer of the liquid throughout the whole circuit. The entire assembly is powered by the engine. The hydraulic pump is generating a pressure that is set and maintained by the appropriate sub-assemblies, such as hydraulic valves. The operation of the hydraulic circuit relies upon the cooperation of all elements involved - each one must function impeccably to ensure that the whole system is going to work as desired. If any element of the hydraulic circut fails, one can immediately notice the difference in the performance of a construction machine. Such malfunction could negatively impact fuctions of the equipment.  Consequences will be more severe if a more serious failure takes place, as valves or hydraulic pumps could be damaged beyond repair. That's why taking great care to maintain good condition of the whole hydraulic circuit in any machine is of utmost importance. The hydraulic pump is particularly prone to various malfunctions, due to intensity of its job - it's meant to work without interruptions from start-up of the machine, even if it remains still. The hydraulic pump can work with various levels of intensity, but its prolonged work in difficult conditions is greatly impacting the state it's in. There are two types of hydraulic pumps that are used in construction equipment: gear and variflow pumps. A simple design of a gear pump and its continuous dependability is positively impacting its performance. Its action is based upon two spinning gears that are connected  together via a gear shaft. Variflow pumps also convert mechanical energy of the engine into hydraulic energy of the work fluid in the circuit. However, they generate much higher pressure amount when compared to gear pumps. In this kind of a pump, a specific amount of the fluid is pressed out  of securely enclosed work chamber, while at the same time, its pressure is increased to the press-in level simultaneously. The pressure created by the hydraulic pump is powering up sub-assemblies that are responsible for moving the machine around.

Taking good care of the hydraulic pump, as well as the whole hydraulic circuit, is really important, as properly performed maintenance and servicing schedule will significantly prolong its service life. Investing in high quality subassemblies is eually important.  Hydraulic pumps as well as other hydraulic circuit elements, suitable for construction machinery made by JCB, CAT, Case, Komatsu, Volvo, New Holland are available on hand in our offer. For more information, please contact our sales department - 172303300 or biuro@serwis-kop.pl. 

Posted in: SK Blog

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