Excavator Hydraulic Pump Price

Engine, hydraulic pump, distribution valve is often said to be the three major parts of the excavator, why is the excavator not powered by the engine like the car, through the gearbox, transmission shaft to drive the whole vehicle forward, but through the engine to drive the hydraulic pump to rotate, by the high-pressure hydraulic oil through the hydraulic motor, hydraulic cylinder and other hydraulic actuators to drive the whole vehicle action? The engine provides power for the hydraulic pump, hydraulic pump, hydraulic oil pipeline, hydraulic motor, hydraulic cylinder, etc. are hydraulic transmission, and the distribution valve is hydraulically controlled. In the manufacture of hydraulic pumps for excavators, Elephant Fluid Power has rich experience.

Hydraulic pumps convert mechanical energy into liquid pressure energy, and we generally see gear pumps and plunger pumps (for excavators and loaders). What both of them have in common is that they put pressure on the liquid through volume changes, but their mechanisms and volumetric positions differ. The liquid volume of the gear pump is between the two gears, and the liquid volume is changed by gear rotation, while the volume of the plunger pump is in each plunger cylinder.

Common large and medium-sized excavators generally integrate plunger pumps and gear pumps together to form a hydraulic pump assembly, and the main pump is generally a plunger pump (output hydraulic oil pressure is large) to supply oil to hydraulic travel motors, hydraulic rotary motors, and hydraulic cylinders; The pilot pump supplies oil to the distribution valve to a gear pump (with less hydraulic oil output pressure).

Gear pumps work by a closed movement in the form of two meshing gears when they rotate. The gear pump is a gear transmission to provide power, and the gear pump is a quantitative pump, which is mostly used for low-precision medium and low pressure control. Its main features are: simple structure, convenient manufacturing, low cost, low price, small size, light weight, good self-priming performance, insensitive to oil pollution and reliable work, etc., it is widely used in various low-pressure systems.

External gear pump is a commonly used hydraulic pump in the hydraulic system of loaders and some small excavators. There is a gear with the same module and the same number of teeth in the pump body, and the two end faces of the gear are sealed by the pump cover. The gear grooves of the pump body, end cover and gear form a sealed volume, and the meshing of the two gear edges divides the closed volume space into two parts: oil suction chamber and pressure oil chamber, and does not communicate with each other in operation. Due to the meshing of the gears, the volume of the seal is gradually reduced, and the oil in the cogging is squeezed and discharged from the oil drain. The gear rotates continuously, and the volume of the oil absorption and drainage chamber changes caused by the gear meshing, so as to realize the continuous oil absorption of the oil absorption chamber and the continuous pressure of the oil pressure chamber.

Plunger pump is powered by the reciprocating movement of the piston, plunger pump is a variable pump, mostly used for high-precision high-pressure control, plunger pump, high working pressure, its working pressure is generally 20~40MPa, up to 1000MPa; It has the advantages of compact structure, high efficiency and convenient flow regulation. The plunger pump has high pressure, stable performance, high cost, minimal pulsation, can be variable, and is commonly used in high-pressure systems and engineering machinery.

In addition to producing a variety of hydraulic pump parts, Elephant Fluid Power can also maintain, refurbish and maintain hydraulic pumps, so that you can get a very good experience in the use of hydraulic pumps, and Elephant Fluid Power also has a very suitable price, guaranteed to make you value for money.

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